1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 104 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 109 #endif 110 111 #define HCI_CONNECTION_TIMEOUT_MS 10000 112 113 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 114 #define HCI_RESET_RESEND_TIMEOUT_MS 200 115 #endif 116 117 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 118 #ifndef GAP_INQUIRY_MAX_NAME_LEN 119 #define GAP_INQUIRY_MAX_NAME_LEN 32 120 #endif 121 122 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 123 #define GAP_INQUIRY_DURATION_MIN 0x01 124 #define GAP_INQUIRY_DURATION_MAX 0x30 125 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 126 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 127 #define GAP_INQUIRY_STATE_IDLE 0x00 128 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 129 #define GAP_INQUIRY_STATE_ACTIVE 0x81 130 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 131 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 132 #define GAP_INQUIRY_STATE_PERIODIC 0x84 133 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 134 135 // GAP Remote Name Request 136 #define GAP_REMOTE_NAME_STATE_IDLE 0 137 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 138 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 139 140 // GAP Pairing 141 #define GAP_PAIRING_STATE_IDLE 0 142 #define GAP_PAIRING_STATE_SEND_PIN 1 143 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 144 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 145 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 146 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 147 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 148 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 149 150 // 151 // compact storage of relevant supported HCI Commands. 152 // X-Macro below provides enumeration and mapping table into the supported 153 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 154 // 155 156 // format: command name, byte offset, bit nr in 64-byte supported commands 157 // currently stored in 32-bit variable 158 #define SUPPORTED_HCI_COMMANDS \ 159 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 160 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 161 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 162 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 163 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 164 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 165 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 166 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 167 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 168 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 169 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 170 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 171 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 172 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 173 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 174 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 175 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 176 177 // enumerate supported commands 178 #define X(name, offset, bit) name, 179 enum { 180 SUPPORTED_HCI_COMMANDS 181 SUPPORTED_HCI_COMMANDS_COUNT 182 }; 183 #undef X 184 185 // prototypes 186 #ifdef ENABLE_CLASSIC 187 static void hci_update_scan_enable(void); 188 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 189 static int hci_local_ssp_activated(void); 190 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 191 static bool hci_ssp_supported(hci_connection_t * connection); 192 static void hci_notify_if_sco_can_send_now(void); 193 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 194 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 195 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 196 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 197 static void hci_connection_timestamp(hci_connection_t *connection); 198 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 199 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 200 #endif 201 202 static int hci_power_control_on(void); 203 static void hci_power_control_off(void); 204 static void hci_state_reset(void); 205 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 206 static void hci_emit_transport_packet_sent(void); 207 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 208 static void hci_emit_nr_connections_changed(void); 209 static void hci_emit_hci_open_failed(void); 210 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 211 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 212 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 213 static void hci_run(void); 214 static int hci_is_le_connection(hci_connection_t * connection); 215 216 #ifdef ENABLE_CLASSIC 217 static int hci_have_usb_transport(void); 218 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 219 #endif 220 221 #ifdef ENABLE_BLE 222 static void hci_whitelist_free(void); 223 #ifdef ENABLE_LE_CENTRAL 224 // called from test/ble_client/advertising_data_parser.c 225 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 226 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 227 static hci_connection_t * gap_get_outgoing_connection(void); 228 static void hci_le_scan_stop(void); 229 static bool hci_run_general_gap_le(void); 230 #endif 231 #ifdef ENABLE_LE_PERIPHERAL 232 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 233 static void hci_periodic_advertiser_list_free(void); 234 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 235 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 236 #endif /* ENABLE_LE_PERIPHERAL */ 237 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 238 static uint8_t hci_iso_stream_create(hci_iso_type_t iso_type, hci_con_handle_t con_handle, uint8_t group_id, 239 hci_iso_stream_state_t state); 240 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 241 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 242 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 243 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 244 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 245 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size); 246 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 247 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 248 static void hci_iso_notify_can_send_now(void); 249 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 250 static void hci_emit_big_terminated(const le_audio_big_t * big); 251 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 252 static void hci_emit_big_sync_stopped(uint8_t big_handle); 253 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 254 static void 255 hci_emit_cis_created(uint8_t cig_id, hci_con_handle_t cis_con_handle, uint8_t status); 256 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 257 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 258 #endif /* ENABLE_BLE */ 259 260 // the STACK is here 261 #ifndef HAVE_MALLOC 262 static hci_stack_t hci_stack_static; 263 #endif 264 static hci_stack_t * hci_stack = NULL; 265 266 #ifdef ENABLE_CLASSIC 267 // default name 268 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 269 270 // test helper 271 static uint8_t disable_l2cap_timeouts = 0; 272 #endif 273 274 static bool btstack_is_null(uint8_t * data, uint16_t size){ 275 uint16_t i; 276 for (i=0; i < size ; i++){ 277 if (data[i] != 0) { 278 return false; 279 } 280 } 281 return true; 282 } 283 284 // reset connection state on create and on reconnect 285 // don't overwrite addr, con handle, role 286 static void hci_connection_init(hci_connection_t * conn){ 287 conn->authentication_flags = AUTH_FLAG_NONE; 288 conn->bonding_flags = 0; 289 conn->requested_security_level = LEVEL_0; 290 #ifdef ENABLE_CLASSIC 291 conn->request_role = HCI_ROLE_INVALID; 292 conn->sniff_subrating_max_latency = 0xffff; 293 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 294 conn->link_key_type = INVALID_LINK_KEY; 295 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 296 btstack_run_loop_set_timer_context(&conn->timeout, conn); 297 hci_connection_timestamp(conn); 298 #endif 299 conn->acl_recombination_length = 0; 300 conn->acl_recombination_pos = 0; 301 conn->num_packets_sent = 0; 302 303 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 304 #ifdef ENABLE_BLE 305 conn->le_phy_update_all_phys = 0xff; 306 #endif 307 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 308 conn->le_max_tx_octets = 27; 309 #endif 310 #ifdef ENABLE_CLASSIC_PAIRING_OOB 311 conn->classic_oob_c_192 = NULL; 312 conn->classic_oob_r_192 = NULL; 313 conn->classic_oob_c_256 = NULL; 314 conn->classic_oob_r_256 = NULL; 315 #endif 316 } 317 318 /** 319 * create connection for given address 320 * 321 * @return connection OR NULL, if no memory left 322 */ 323 static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 324 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 325 326 hci_connection_t * conn = btstack_memory_hci_connection_get(); 327 if (!conn) return NULL; 328 hci_connection_init(conn); 329 330 bd_addr_copy(conn->address, addr); 331 conn->address_type = addr_type; 332 conn->con_handle = HCI_CON_HANDLE_INVALID; 333 conn->role = HCI_ROLE_INVALID; 334 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 335 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 336 #endif 337 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 338 339 return conn; 340 } 341 342 343 /** 344 * get le connection parameter range 345 * 346 * @return le connection parameter range struct 347 */ 348 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 349 *range = hci_stack->le_connection_parameter_range; 350 } 351 352 /** 353 * set le connection parameter range 354 * 355 */ 356 357 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 358 hci_stack->le_connection_parameter_range = *range; 359 } 360 361 /** 362 * @brief Test if connection parameters are inside in existing rage 363 * @param conn_interval_min (unit: 1.25ms) 364 * @param conn_interval_max (unit: 1.25ms) 365 * @param conn_latency 366 * @param supervision_timeout (unit: 10ms) 367 * @return 1 if included 368 */ 369 int gap_connection_parameter_range_included(le_connection_parameter_range_t * existing_range, uint16_t le_conn_interval_min, uint16_t le_conn_interval_max, uint16_t le_conn_latency, uint16_t le_supervision_timeout){ 370 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 371 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 372 373 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 374 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 375 376 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 377 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 378 379 return 1; 380 } 381 382 /** 383 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 384 * @note: default: 1 385 * @param max_peripheral_connections 386 */ 387 #ifdef ENABLE_LE_PERIPHERAL 388 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 389 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 390 } 391 #endif 392 393 /** 394 * get hci connections iterator 395 * 396 * @return hci connections iterator 397 */ 398 399 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 400 btstack_linked_list_iterator_init(it, &hci_stack->connections); 401 } 402 403 /** 404 * get connection for a given handle 405 * 406 * @return connection OR NULL, if not found 407 */ 408 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 409 btstack_linked_list_iterator_t it; 410 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 411 while (btstack_linked_list_iterator_has_next(&it)){ 412 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 413 if ( item->con_handle == con_handle ) { 414 return item; 415 } 416 } 417 return NULL; 418 } 419 420 /** 421 * get connection for given address 422 * 423 * @return connection OR NULL, if not found 424 */ 425 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 426 btstack_linked_list_iterator_t it; 427 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 428 while (btstack_linked_list_iterator_has_next(&it)){ 429 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 430 if (connection->address_type != addr_type) continue; 431 if (memcmp(addr, connection->address, 6) != 0) continue; 432 return connection; 433 } 434 return NULL; 435 } 436 437 #ifdef ENABLE_CLASSIC 438 439 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 440 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 441 } 442 443 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 444 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 445 } 446 447 #ifdef ENABLE_SCO_OVER_HCI 448 static int hci_number_sco_connections(void){ 449 int connections = 0; 450 btstack_linked_list_iterator_t it; 451 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 452 while (btstack_linked_list_iterator_has_next(&it)){ 453 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 454 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 455 connections++; 456 } 457 return connections; 458 } 459 #endif 460 461 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 462 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 463 #ifdef HAVE_EMBEDDED_TICK 464 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 465 // connections might be timed out 466 hci_emit_l2cap_check_timeout(connection); 467 } 468 #else 469 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 470 // connections might be timed out 471 hci_emit_l2cap_check_timeout(connection); 472 } 473 #endif 474 } 475 476 static void hci_connection_timestamp(hci_connection_t *connection){ 477 #ifdef HAVE_EMBEDDED_TICK 478 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 479 #else 480 connection->timestamp = btstack_run_loop_get_time_ms(); 481 #endif 482 } 483 484 /** 485 * add authentication flags and reset timer 486 * @note: assumes classic connection 487 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 488 */ 489 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 490 bd_addr_t addr; 491 reverse_bd_addr(bd_addr, addr); 492 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 493 if (conn) { 494 connectionSetAuthenticationFlags(conn, flags); 495 hci_connection_timestamp(conn); 496 } 497 } 498 499 static bool hci_pairing_active(hci_connection_t * hci_connection){ 500 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 501 } 502 503 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 504 if (hci_pairing_active(hci_connection)) return; 505 if (ssp){ 506 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 507 } else { 508 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 509 } 510 // if we are initiator, we have sent an HCI Authenticate Request 511 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 512 513 // if we are responder, use minimal service security level as required level 514 if (!initiator){ 515 hci_connection->requested_security_level = (gap_security_level_t) btstack_max((uint32_t) hci_connection->requested_security_level, (uint32_t) hci_stack->gap_minimal_service_security_level); 516 } 517 518 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 519 520 uint8_t event[12]; 521 event[0] = GAP_EVENT_PAIRING_STARTED; 522 event[1] = 10; 523 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 524 reverse_bd_addr(hci_connection->address, &event[4]); 525 event[10] = (uint8_t) ssp; 526 event[11] = (uint8_t) initiator; 527 hci_emit_event(event, sizeof(event), 1); 528 } 529 530 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 531 hci_connection->requested_security_level = LEVEL_0; 532 if (!hci_pairing_active(hci_connection)) return; 533 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 534 #ifdef ENABLE_CLASSIC_PAIRING_OOB 535 hci_connection->classic_oob_c_192 = NULL; 536 hci_connection->classic_oob_r_192 = NULL; 537 hci_connection->classic_oob_c_256 = NULL; 538 hci_connection->classic_oob_r_256 = NULL; 539 #endif 540 log_info("pairing complete, status %02x", status); 541 542 uint8_t event[11]; 543 event[0] = GAP_EVENT_PAIRING_COMPLETE; 544 event[1] = 9; 545 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 546 reverse_bd_addr(hci_connection->address, &event[4]); 547 event[10] = status; 548 hci_emit_event(event, sizeof(event), 1); 549 550 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 551 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 552 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 553 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 554 hci_connection->bonding_status = status; 555 } 556 } 557 558 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 559 hci_connection_t * conn = hci_connection_for_handle(handle); 560 if (!conn) return false; 561 return hci_pairing_active(conn); 562 } 563 564 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 565 if (!hci_stack->link_key_db) return; 566 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 567 hci_stack->link_key_db->delete_link_key(addr); 568 } 569 570 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 571 if (!hci_stack->link_key_db) return; 572 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 573 hci_stack->link_key_db->put_link_key(addr, link_key, type); 574 } 575 576 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 577 if (!hci_stack->link_key_db) return false; 578 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 579 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 580 return result; 581 } 582 583 void gap_delete_all_link_keys(void){ 584 bd_addr_t addr; 585 link_key_t link_key; 586 link_key_type_t type; 587 btstack_link_key_iterator_t it; 588 int ok = gap_link_key_iterator_init(&it); 589 if (!ok) { 590 log_error("could not initialize iterator"); 591 return; 592 } 593 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 594 gap_drop_link_key_for_bd_addr(addr); 595 } 596 gap_link_key_iterator_done(&it); 597 } 598 599 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 600 if (!hci_stack->link_key_db) return 0; 601 if (!hci_stack->link_key_db->iterator_init) return 0; 602 return hci_stack->link_key_db->iterator_init(it); 603 } 604 int gap_link_key_iterator_get_next(btstack_link_key_iterator_t * it, bd_addr_t bd_addr, link_key_t link_key, link_key_type_t * type){ 605 if (!hci_stack->link_key_db) return 0; 606 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 607 } 608 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 609 if (!hci_stack->link_key_db) return; 610 hci_stack->link_key_db->iterator_done(it); 611 } 612 #endif 613 614 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 615 switch (address_type){ 616 case BD_ADDR_TYPE_LE_PUBLIC: 617 case BD_ADDR_TYPE_LE_RANDOM: 618 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_PUBLIC: 619 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_RANDOM: 620 return true; 621 default: 622 return false; 623 } 624 } 625 626 static int hci_is_le_connection(hci_connection_t * connection){ 627 return hci_is_le_connection_type(connection->address_type); 628 } 629 630 /** 631 * count connections 632 */ 633 static int nr_hci_connections(void){ 634 int count = 0; 635 btstack_linked_item_t *it; 636 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 637 count++; 638 } 639 return count; 640 } 641 642 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 643 644 unsigned int num_packets_sent_classic = 0; 645 unsigned int num_packets_sent_le = 0; 646 647 btstack_linked_item_t *it; 648 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 649 hci_connection_t * connection = (hci_connection_t *) it; 650 if (hci_is_le_connection(connection)){ 651 num_packets_sent_le += connection->num_packets_sent; 652 } 653 if (connection->address_type == BD_ADDR_TYPE_ACL){ 654 num_packets_sent_classic += connection->num_packets_sent; 655 } 656 } 657 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 658 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 659 int free_slots_le = 0; 660 661 if (free_slots_classic < 0){ 662 log_error("hci_number_free_acl_slots: outgoing classic packets (%u) > total classic packets (%u)", num_packets_sent_classic, hci_stack->acl_packets_total_num); 663 return 0; 664 } 665 666 if (hci_stack->le_acl_packets_total_num){ 667 // if we have LE slots, they are used 668 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 669 if (free_slots_le < 0){ 670 log_error("hci_number_free_acl_slots: outgoing le packets (%u) > total le packets (%u)", num_packets_sent_le, hci_stack->le_acl_packets_total_num); 671 return 0; 672 } 673 } else { 674 // otherwise, classic slots are used for LE, too 675 free_slots_classic -= num_packets_sent_le; 676 if (free_slots_classic < 0){ 677 log_error("hci_number_free_acl_slots: outgoing classic + le packets (%u + %u) > total packets (%u)", num_packets_sent_classic, num_packets_sent_le, hci_stack->acl_packets_total_num); 678 return 0; 679 } 680 } 681 682 switch (address_type){ 683 case BD_ADDR_TYPE_UNKNOWN: 684 log_error("hci_number_free_acl_slots: unknown address type"); 685 return 0; 686 687 case BD_ADDR_TYPE_ACL: 688 return (uint16_t) free_slots_classic; 689 690 default: 691 if (hci_stack->le_acl_packets_total_num > 0){ 692 return (uint16_t) free_slots_le; 693 } 694 return (uint16_t) free_slots_classic; 695 } 696 } 697 698 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 699 // get connection type 700 hci_connection_t * connection = hci_connection_for_handle(con_handle); 701 if (!connection){ 702 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 703 return 0; 704 } 705 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 706 } 707 708 #ifdef ENABLE_CLASSIC 709 static int hci_number_free_sco_slots(void){ 710 unsigned int num_sco_packets_sent = 0; 711 btstack_linked_item_t *it; 712 if (hci_stack->synchronous_flow_control_enabled){ 713 // explicit flow control 714 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 715 hci_connection_t * connection = (hci_connection_t *) it; 716 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 717 num_sco_packets_sent += connection->num_packets_sent; 718 } 719 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 720 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 721 return 0; 722 } 723 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 724 } else { 725 // implicit flow control -- TODO 726 int num_ready = 0; 727 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 728 hci_connection_t * connection = (hci_connection_t *) it; 729 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 730 if (connection->sco_tx_ready == 0) continue; 731 num_ready++; 732 } 733 return num_ready; 734 } 735 } 736 #endif 737 738 // only used to send HCI Host Number Completed Packets 739 static int hci_can_send_comand_packet_transport(void){ 740 if (hci_stack->hci_packet_buffer_reserved) return 0; 741 742 // check for async hci transport implementations 743 if (hci_stack->hci_transport->can_send_packet_now){ 744 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 745 return 0; 746 } 747 } 748 return 1; 749 } 750 751 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 752 bool hci_can_send_command_packet_now(void){ 753 if (hci_can_send_comand_packet_transport() == 0) return false; 754 return hci_stack->num_cmd_packets > 0u; 755 } 756 757 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 758 // check for async hci transport implementations 759 if (!hci_stack->hci_transport->can_send_packet_now) return true; 760 return hci_stack->hci_transport->can_send_packet_now(packet_type); 761 } 762 763 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 764 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 765 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 766 } 767 768 bool hci_can_send_acl_le_packet_now(void){ 769 if (hci_stack->hci_packet_buffer_reserved) return false; 770 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 771 } 772 773 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 774 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 775 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 776 } 777 778 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 779 if (hci_stack->hci_packet_buffer_reserved) return false; 780 return hci_can_send_prepared_acl_packet_now(con_handle); 781 } 782 783 #ifdef ENABLE_CLASSIC 784 bool hci_can_send_acl_classic_packet_now(void){ 785 if (hci_stack->hci_packet_buffer_reserved) return false; 786 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 787 } 788 789 bool hci_can_send_prepared_sco_packet_now(void){ 790 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 791 if (hci_have_usb_transport()){ 792 return hci_stack->sco_can_send_now; 793 } else { 794 return hci_number_free_sco_slots() > 0; 795 } 796 } 797 798 bool hci_can_send_sco_packet_now(void){ 799 if (hci_stack->hci_packet_buffer_reserved) return false; 800 return hci_can_send_prepared_sco_packet_now(); 801 } 802 803 void hci_request_sco_can_send_now_event(void){ 804 hci_stack->sco_waiting_for_can_send_now = 1; 805 hci_notify_if_sco_can_send_now(); 806 } 807 #endif 808 809 // used for internal checks in l2cap.c 810 bool hci_is_packet_buffer_reserved(void){ 811 return hci_stack->hci_packet_buffer_reserved; 812 } 813 814 // reserves outgoing packet buffer. 815 // @return 1 if successful 816 bool hci_reserve_packet_buffer(void){ 817 if (hci_stack->hci_packet_buffer_reserved) { 818 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 819 return false; 820 } 821 hci_stack->hci_packet_buffer_reserved = true; 822 return true; 823 } 824 825 void hci_release_packet_buffer(void){ 826 hci_stack->hci_packet_buffer_reserved = false; 827 } 828 829 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 830 static int hci_transport_synchronous(void){ 831 return hci_stack->hci_transport->can_send_packet_now == NULL; 832 } 833 834 // used for debugging 835 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 836 static void hci_controller_dump_packets(void){ 837 // format: "{handle:04x}:{count:02d} " 838 char summaries[3][7 * 8 + 1]; 839 uint16_t totals[3]; 840 uint8_t index; 841 for (index = 0 ; index < 3 ; index++){ 842 summaries[index][0] = 0; 843 totals[index] = 0; 844 } 845 btstack_linked_item_t *it; 846 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 847 hci_connection_t * connection = (hci_connection_t *) it; 848 switch (connection->address_type){ 849 case BD_ADDR_TYPE_ACL: 850 index = 0; 851 break; 852 case BD_ADDR_TYPE_SCO: 853 index = 2; 854 break; 855 default: 856 index = 1; 857 break; 858 } 859 totals[index] += connection->num_packets_sent; 860 char item_text[10]; 861 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 862 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 863 } 864 for (index = 0 ; index < 3 ; index++){ 865 if (summaries[index][0] == 0){ 866 summaries[index][0] = '-'; 867 summaries[index][1] = 0; 868 } 869 } 870 log_info("Controller ACL BR/EDR: %s total %u / LE: %s total %u / SCO: %s total %u", summaries[0], totals[0], summaries[1], totals[1], summaries[2], totals[2]); 871 } 872 #endif 873 874 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 875 876 // log_info("hci_send_acl_packet_fragments %u/%u (con 0x%04x)", hci_stack->acl_fragmentation_pos, hci_stack->acl_fragmentation_total_size, connection->con_handle); 877 878 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 879 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 880 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 881 max_acl_data_packet_length = hci_stack->le_data_packets_length; 882 } 883 884 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 885 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 886 max_acl_data_packet_length = connection->le_max_tx_octets; 887 } 888 #endif 889 890 log_debug("hci_send_acl_packet_fragments entered"); 891 892 uint8_t status = ERROR_CODE_SUCCESS; 893 // multiple packets could be send on a synchronous HCI transport 894 while (true){ 895 896 log_debug("hci_send_acl_packet_fragments loop entered"); 897 898 // get current data 899 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 900 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 901 bool more_fragments = false; 902 903 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 904 if (current_acl_data_packet_length > max_acl_data_packet_length){ 905 more_fragments = true; 906 current_acl_data_packet_length = max_acl_data_packet_length; 907 } 908 909 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 910 if (acl_header_pos > 0u){ 911 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 912 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 913 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 914 } 915 916 // update header len 917 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 918 919 // count packet 920 connection->num_packets_sent++; 921 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 922 923 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 924 if (more_fragments){ 925 // update start of next fragment to send 926 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 927 } else { 928 // done 929 hci_stack->acl_fragmentation_pos = 0; 930 hci_stack->acl_fragmentation_total_size = 0; 931 } 932 933 // send packet 934 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 935 const int size = current_acl_data_packet_length + 4; 936 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 937 hci_stack->acl_fragmentation_tx_active = 1; 938 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 939 if (err != 0){ 940 // no error from HCI Transport expected 941 status = ERROR_CODE_HARDWARE_FAILURE; 942 } 943 944 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 945 hci_controller_dump_packets(); 946 #endif 947 948 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 949 950 // done yet? 951 if (!more_fragments) break; 952 953 // can send more? 954 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 955 } 956 957 log_debug("hci_send_acl_packet_fragments loop over"); 958 959 // release buffer now for synchronous transport 960 if (hci_transport_synchronous()){ 961 hci_stack->acl_fragmentation_tx_active = 0; 962 hci_release_packet_buffer(); 963 hci_emit_transport_packet_sent(); 964 } 965 966 return status; 967 } 968 969 // pre: caller has reserved the packet buffer 970 uint8_t hci_send_acl_packet_buffer(int size){ 971 btstack_assert(hci_stack->hci_packet_buffer_reserved); 972 973 uint8_t * packet = hci_stack->hci_packet_buffer; 974 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 975 976 // check for free places on Bluetooth module 977 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 978 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 979 hci_release_packet_buffer(); 980 hci_emit_transport_packet_sent(); 981 return BTSTACK_ACL_BUFFERS_FULL; 982 } 983 984 hci_connection_t *connection = hci_connection_for_handle( con_handle); 985 if (!connection) { 986 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 987 hci_release_packet_buffer(); 988 hci_emit_transport_packet_sent(); 989 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 990 } 991 992 #ifdef ENABLE_CLASSIC 993 hci_connection_timestamp(connection); 994 #endif 995 996 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 997 998 // setup data 999 hci_stack->acl_fragmentation_total_size = size; 1000 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 1001 1002 return hci_send_acl_packet_fragments(connection); 1003 } 1004 1005 #ifdef ENABLE_CLASSIC 1006 // pre: caller has reserved the packet buffer 1007 uint8_t hci_send_sco_packet_buffer(int size){ 1008 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1009 1010 uint8_t * packet = hci_stack->hci_packet_buffer; 1011 1012 // skip checks in loopback mode 1013 if (!hci_stack->loopback_mode){ 1014 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1015 1016 // check for free places on Bluetooth module 1017 if (!hci_can_send_prepared_sco_packet_now()) { 1018 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1019 hci_release_packet_buffer(); 1020 hci_emit_transport_packet_sent(); 1021 return BTSTACK_ACL_BUFFERS_FULL; 1022 } 1023 1024 // track send packet in connection struct 1025 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1026 if (!connection) { 1027 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1028 hci_release_packet_buffer(); 1029 hci_emit_transport_packet_sent(); 1030 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1031 } 1032 1033 if (hci_have_usb_transport()){ 1034 // token used 1035 hci_stack->sco_can_send_now = false; 1036 } else { 1037 if (hci_stack->synchronous_flow_control_enabled){ 1038 connection->num_packets_sent++; 1039 } else { 1040 connection->sco_tx_ready--; 1041 } 1042 } 1043 } 1044 1045 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1046 1047 #ifdef HAVE_SCO_TRANSPORT 1048 hci_stack->sco_transport->send_packet(packet, size); 1049 hci_release_packet_buffer(); 1050 hci_emit_transport_packet_sent(); 1051 1052 return 0; 1053 #else 1054 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1055 if (hci_transport_synchronous()){ 1056 hci_release_packet_buffer(); 1057 hci_emit_transport_packet_sent(); 1058 } 1059 1060 if (err != 0){ 1061 return ERROR_CODE_HARDWARE_FAILURE; 1062 } 1063 return ERROR_CODE_SUCCESS; 1064 #endif 1065 } 1066 #endif 1067 1068 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1069 static uint8_t hci_send_iso_packet_fragments(void){ 1070 1071 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1072 uint8_t status = ERROR_CODE_SUCCESS; 1073 // multiple packets could be send on a synchronous HCI transport 1074 while (true){ 1075 1076 // get current data 1077 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1078 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1079 bool more_fragments = false; 1080 1081 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1082 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1083 more_fragments = true; 1084 current_iso_data_packet_length = max_iso_data_packet_length; 1085 } 1086 1087 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1088 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1089 uint8_t pb_flags; 1090 if (iso_header_pos == 0u){ 1091 // first fragment, keep TS field 1092 pb_flags = more_fragments ? 0x00 : 0x02; 1093 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1094 } else { 1095 // later fragment, drop TS field 1096 pb_flags = more_fragments ? 0x01 : 0x03; 1097 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1098 } 1099 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1100 1101 // update header len 1102 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1103 1104 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1105 if (more_fragments){ 1106 // update start of next fragment to send 1107 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1108 } else { 1109 // done 1110 hci_stack->iso_fragmentation_pos = 0; 1111 hci_stack->iso_fragmentation_total_size = 0; 1112 } 1113 1114 // send packet 1115 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1116 const int size = current_iso_data_packet_length + 4; 1117 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1118 hci_stack->iso_fragmentation_tx_active = true; 1119 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1120 if (err != 0){ 1121 // no error from HCI Transport expected 1122 status = ERROR_CODE_HARDWARE_FAILURE; 1123 } 1124 1125 // done yet? 1126 if (!more_fragments) break; 1127 1128 // can send more? 1129 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1130 } 1131 1132 // release buffer now for synchronous transport 1133 if (hci_transport_synchronous()){ 1134 hci_stack->iso_fragmentation_tx_active = false; 1135 hci_release_packet_buffer(); 1136 hci_emit_transport_packet_sent(); 1137 } 1138 1139 return status; 1140 } 1141 1142 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1143 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1144 1145 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1146 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1147 if (iso_stream == NULL){ 1148 hci_release_packet_buffer(); 1149 hci_iso_notify_can_send_now(); 1150 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1151 } 1152 1153 // TODO: check for space on controller 1154 1155 // skip iso packets if needed 1156 if (iso_stream->num_packets_to_skip > 0){ 1157 iso_stream->num_packets_to_skip--; 1158 // pretend it was processed and trigger next one 1159 hci_release_packet_buffer(); 1160 hci_iso_notify_can_send_now(); 1161 return ERROR_CODE_SUCCESS; 1162 } 1163 1164 // track outgoing packet sent 1165 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1166 iso_stream->num_packets_sent++; 1167 1168 // setup data 1169 hci_stack->iso_fragmentation_total_size = size; 1170 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1171 1172 return hci_send_iso_packet_fragments(); 1173 } 1174 #endif 1175 1176 static void acl_handler(uint8_t *packet, uint16_t size){ 1177 1178 // get info 1179 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1180 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1181 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1182 uint16_t acl_length = READ_ACL_LENGTH(packet); 1183 1184 // ignore non-registered handle 1185 if (!conn){ 1186 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1187 return; 1188 } 1189 1190 // assert packet is complete 1191 if ((acl_length + 4u) != size){ 1192 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1193 return; 1194 } 1195 1196 #ifdef ENABLE_CLASSIC 1197 // update idle timestamp 1198 hci_connection_timestamp(conn); 1199 #endif 1200 1201 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1202 hci_stack->host_completed_packets = 1; 1203 conn->num_packets_completed++; 1204 #endif 1205 1206 // handle different packet types 1207 switch (acl_flags & 0x03u) { 1208 1209 case 0x01: // continuation fragment 1210 1211 // sanity checks 1212 if (conn->acl_recombination_pos == 0u) { 1213 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1214 return; 1215 } 1216 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1217 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1218 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1219 conn->acl_recombination_pos = 0; 1220 return; 1221 } 1222 1223 // append fragment payload (header already stored) 1224 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1225 &packet[4], acl_length); 1226 conn->acl_recombination_pos += acl_length; 1227 1228 // forward complete L2CAP packet if complete. 1229 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1230 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1231 // reset recombination buffer 1232 conn->acl_recombination_length = 0; 1233 conn->acl_recombination_pos = 0; 1234 } 1235 break; 1236 1237 case 0x02: { // first fragment 1238 1239 // sanity check 1240 if (conn->acl_recombination_pos) { 1241 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1242 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1243 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1244 } 1245 conn->acl_recombination_pos = 0; 1246 } 1247 1248 // peek into L2CAP packet! 1249 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1250 1251 // compare fragment size to L2CAP packet size 1252 if (acl_length >= (l2cap_length + 4u)){ 1253 // forward fragment as L2CAP packet 1254 hci_emit_acl_packet(packet, acl_length + 4u); 1255 } else { 1256 1257 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1258 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1259 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1260 return; 1261 } 1262 1263 // store first fragment and tweak acl length for complete package 1264 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1265 packet, acl_length + 4u); 1266 conn->acl_recombination_pos = acl_length + 4u; 1267 conn->acl_recombination_length = l2cap_length; 1268 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1269 } 1270 break; 1271 1272 } 1273 default: 1274 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1275 return; 1276 } 1277 1278 // execute main loop 1279 hci_run(); 1280 } 1281 1282 static void hci_connection_stop_timer(hci_connection_t * conn){ 1283 btstack_run_loop_remove_timer(&conn->timeout); 1284 #ifdef ENABLE_CLASSIC 1285 btstack_run_loop_remove_timer(&conn->timeout_sco); 1286 #endif 1287 } 1288 1289 static void hci_shutdown_connection(hci_connection_t *conn){ 1290 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1291 1292 #ifdef ENABLE_CLASSIC 1293 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1294 bd_addr_type_t addr_type = conn->address_type; 1295 #endif 1296 #ifdef HAVE_SCO_TRANSPORT 1297 hci_con_handle_t con_handle = conn->con_handle; 1298 #endif 1299 #endif 1300 1301 hci_connection_stop_timer(conn); 1302 1303 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1304 btstack_memory_hci_connection_free( conn ); 1305 1306 // now it's gone 1307 hci_emit_nr_connections_changed(); 1308 1309 #ifdef ENABLE_CLASSIC 1310 #ifdef ENABLE_SCO_OVER_HCI 1311 // update SCO 1312 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1313 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1314 } 1315 #endif 1316 #ifdef HAVE_SCO_TRANSPORT 1317 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1318 hci_stack->sco_transport->close(con_handle); 1319 } 1320 #endif 1321 #endif 1322 } 1323 1324 #ifdef ENABLE_CLASSIC 1325 1326 static const uint16_t packet_type_sizes[] = { 1327 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1328 HCI_ACL_DH1_SIZE, 0, 0, 0, 1329 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1330 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1331 }; 1332 static const uint8_t packet_type_feature_requirement_bit[] = { 1333 0, // 3 slot packets 1334 1, // 5 slot packets 1335 25, // EDR 2 mpbs 1336 26, // EDR 3 mbps 1337 39, // 3 slot EDR packts 1338 40, // 5 slot EDR packet 1339 }; 1340 static const uint16_t packet_type_feature_packet_mask[] = { 1341 0x0f00, // 3 slot packets 1342 0xf000, // 5 slot packets 1343 0x1102, // EDR 2 mpbs 1344 0x2204, // EDR 3 mbps 1345 0x0300, // 3 slot EDR packts 1346 0x3000, // 5 slot EDR packet 1347 }; 1348 1349 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1350 // enable packet types based on size 1351 uint16_t packet_types = 0; 1352 unsigned int i; 1353 for (i=0;i<16;i++){ 1354 if (packet_type_sizes[i] == 0) continue; 1355 if (packet_type_sizes[i] <= buffer_size){ 1356 packet_types |= 1 << i; 1357 } 1358 } 1359 // disable packet types due to missing local supported features 1360 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1361 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1362 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1363 if (feature_set) continue; 1364 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1365 packet_types &= ~packet_type_feature_packet_mask[i]; 1366 } 1367 // flip bits for "may not be used" 1368 packet_types ^= 0x3306; 1369 return packet_types; 1370 } 1371 1372 uint16_t hci_usable_acl_packet_types(void){ 1373 return hci_stack->packet_types; 1374 } 1375 #endif 1376 1377 uint8_t* hci_get_outgoing_packet_buffer(void){ 1378 // hci packet buffer is >= acl data packet length 1379 return hci_stack->hci_packet_buffer; 1380 } 1381 1382 uint16_t hci_max_acl_data_packet_length(void){ 1383 return hci_stack->acl_data_packet_length; 1384 } 1385 1386 #ifdef ENABLE_CLASSIC 1387 bool hci_extended_sco_link_supported(void){ 1388 // No. 31, byte 3, bit 7 1389 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1390 } 1391 #endif 1392 1393 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1394 // No. 54, byte 6, bit 6 1395 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1396 } 1397 1398 #ifdef ENABLE_CLASSIC 1399 static int gap_ssp_supported(void){ 1400 // No. 51, byte 6, bit 3 1401 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1402 } 1403 #endif 1404 1405 static int hci_classic_supported(void){ 1406 #ifdef ENABLE_CLASSIC 1407 // No. 37, byte 4, bit 5, = No BR/EDR Support 1408 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1409 #else 1410 return 0; 1411 #endif 1412 } 1413 1414 static int hci_le_supported(void){ 1415 #ifdef ENABLE_BLE 1416 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1417 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1418 #else 1419 return 0; 1420 #endif 1421 } 1422 1423 static bool hci_command_supported(uint8_t command_index){ 1424 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1425 } 1426 1427 #ifdef ENABLE_BLE 1428 1429 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1430 static bool hci_extended_advertising_supported(void){ 1431 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1432 } 1433 #endif 1434 1435 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1436 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1437 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1438 } else { 1439 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1440 } 1441 } 1442 1443 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1444 *addr_type = hci_stack->le_own_addr_type; 1445 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1446 } 1447 1448 #ifdef ENABLE_LE_PERIPHERAL 1449 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1450 *addr_type = hci_stack->le_advertisements_own_addr_type; 1451 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1452 }; 1453 #endif 1454 1455 #ifdef ENABLE_LE_CENTRAL 1456 1457 /** 1458 * @brief Get own addr type and address used for LE connections (Central) 1459 */ 1460 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1461 *addr_type = hci_stack->le_connection_own_addr_type; 1462 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1463 } 1464 1465 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1466 1467 uint16_t offset = 3; 1468 uint8_t num_reports = packet[offset]; 1469 offset += 1; 1470 1471 uint16_t i; 1472 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1473 for (i=0; (i<num_reports) && (offset < size);i++){ 1474 // sanity checks on data_length: 1475 uint8_t data_length = packet[offset + 8]; 1476 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1477 if ((offset + 9u + data_length + 1u) > size) return; 1478 // setup event 1479 uint8_t event_size = 10u + data_length; 1480 uint16_t pos = 0; 1481 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1482 event[pos++] = event_size; 1483 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1484 offset += 8; 1485 pos += 8; 1486 event[pos++] = packet[offset + 1 + data_length]; // rssi 1487 event[pos++] = data_length; 1488 offset++; 1489 (void)memcpy(&event[pos], &packet[offset], data_length); 1490 pos += data_length; 1491 offset += data_length + 1u; // rssi 1492 hci_emit_event(event, pos, 1); 1493 } 1494 } 1495 1496 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1497 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1498 uint16_t offset = 3; 1499 uint8_t num_reports = packet[offset++]; 1500 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1501 uint8_t i; 1502 for (i=0; (i<num_reports) && (offset < size);i++){ 1503 // sanity checks on data_length: 1504 uint16_t data_length = packet[offset + 23]; 1505 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1506 if ((offset + 24u + data_length) > size) return; 1507 uint16_t event_type = little_endian_read_16(packet, offset); 1508 offset += 2; 1509 if ((event_type & 0x10) != 0) { 1510 // setup legacy event 1511 uint8_t legacy_event_type; 1512 switch (event_type){ 1513 case 0b0010011: 1514 // ADV_IND 1515 legacy_event_type = 0; 1516 break; 1517 case 0b0010101: 1518 // ADV_DIRECT_IND 1519 legacy_event_type = 1; 1520 break; 1521 case 0b0010010: 1522 // ADV_SCAN_IND 1523 legacy_event_type = 2; 1524 break; 1525 case 0b0010000: 1526 // ADV_NONCONN_IND 1527 legacy_event_type = 3; 1528 break; 1529 case 0b0011011: 1530 case 0b0011010: 1531 // SCAN_RSP 1532 legacy_event_type = 4; 1533 break; 1534 default: 1535 legacy_event_type = 0; 1536 break; 1537 } 1538 uint16_t pos = 0; 1539 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1540 event[pos++] = 10u + data_length; 1541 event[pos++] = legacy_event_type; 1542 // copy address type + address 1543 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1544 offset += 7; 1545 pos += 7; 1546 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1547 offset += 4; 1548 // copy rssi 1549 event[pos++] = packet[offset++]; 1550 // skip periodic advertising interval and direct address 1551 offset += 9; 1552 // copy data len + data; 1553 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1554 pos += 1 +data_length; 1555 offset += 1+ data_length; 1556 hci_emit_event(event, pos, 1); 1557 } else { 1558 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1559 uint8_t report_len = 24 + data_length; 1560 event[1] = report_len; 1561 little_endian_store_16(event, 2, event_type); 1562 memcpy(&event[4], &packet[offset], report_len); 1563 offset += report_len; 1564 hci_emit_event(event, 2 + report_len, 1); 1565 } 1566 } 1567 } 1568 #endif 1569 1570 #endif 1571 #endif 1572 1573 #ifdef ENABLE_BLE 1574 #ifdef ENABLE_LE_PERIPHERAL 1575 static void hci_update_advertisements_enabled_for_current_roles(void){ 1576 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1577 // get number of active le slave connections 1578 int num_slave_connections = 0; 1579 btstack_linked_list_iterator_t it; 1580 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1581 while (btstack_linked_list_iterator_has_next(&it)){ 1582 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1583 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1584 if (con->state != OPEN) continue; 1585 if (con->role != HCI_ROLE_SLAVE) continue; 1586 if (!hci_is_le_connection(con)) continue; 1587 num_slave_connections++; 1588 } 1589 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1590 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1591 } else { 1592 hci_stack->le_advertisements_enabled_for_current_roles = false; 1593 } 1594 } 1595 #endif 1596 #endif 1597 1598 #ifdef ENABLE_CLASSIC 1599 static void gap_run_set_local_name(void){ 1600 hci_reserve_packet_buffer(); 1601 uint8_t * packet = hci_stack->hci_packet_buffer; 1602 // construct HCI Command and send 1603 uint16_t opcode = hci_write_local_name.opcode; 1604 hci_stack->last_cmd_opcode = opcode; 1605 packet[0] = opcode & 0xff; 1606 packet[1] = opcode >> 8; 1607 packet[2] = DEVICE_NAME_LEN; 1608 memset(&packet[3], 0, DEVICE_NAME_LEN); 1609 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1610 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1611 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1612 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1613 // expand '00:00:00:00:00:00' in name with bd_addr 1614 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1615 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1616 } 1617 1618 static void gap_run_set_eir_data(void){ 1619 hci_reserve_packet_buffer(); 1620 uint8_t * packet = hci_stack->hci_packet_buffer; 1621 // construct HCI Command in-place and send 1622 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1623 hci_stack->last_cmd_opcode = opcode; 1624 uint16_t offset = 0; 1625 packet[offset++] = opcode & 0xff; 1626 packet[offset++] = opcode >> 8; 1627 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1628 packet[offset++] = 0; // FEC not required 1629 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1630 if (hci_stack->eir_data){ 1631 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1632 ad_context_t context; 1633 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1634 uint8_t data_type = ad_iterator_get_data_type(&context); 1635 uint8_t size = ad_iterator_get_data_len(&context); 1636 const uint8_t *data = ad_iterator_get_data(&context); 1637 // copy item 1638 packet[offset++] = size + 1; 1639 packet[offset++] = data_type; 1640 memcpy(&packet[offset], data, size); 1641 // update name item 1642 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1643 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1644 } 1645 offset += size; 1646 } 1647 } else { 1648 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1649 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1650 packet[offset++] = bytes_to_copy + 1; 1651 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1652 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1653 // expand '00:00:00:00:00:00' in name with bd_addr 1654 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1655 } 1656 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1657 } 1658 1659 static void hci_run_gap_tasks_classic(void){ 1660 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1661 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1662 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1663 return; 1664 } 1665 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1666 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1667 gap_run_set_local_name(); 1668 return; 1669 } 1670 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1671 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1672 gap_run_set_eir_data(); 1673 return; 1674 } 1675 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1676 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1677 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1678 return; 1679 } 1680 // write page scan activity 1681 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1682 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1683 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1684 return; 1685 } 1686 // write page scan type 1687 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1688 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1689 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1690 return; 1691 } 1692 // write page timeout 1693 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1694 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1695 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1696 return; 1697 } 1698 // send scan enable 1699 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1700 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1701 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1702 return; 1703 } 1704 // send write scan activity 1705 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1706 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1707 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1708 return; 1709 } 1710 } 1711 #endif 1712 1713 #ifndef HAVE_HOST_CONTROLLER_API 1714 1715 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1716 if (!hci_stack->config) return 0; 1717 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1718 // Limit baud rate for Broadcom chipsets to 3 mbps 1719 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1720 baud_rate = 3000000; 1721 } 1722 return baud_rate; 1723 } 1724 1725 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1726 UNUSED(ds); 1727 1728 switch (hci_stack->substate){ 1729 case HCI_INIT_W4_SEND_RESET: 1730 log_info("Resend HCI Reset"); 1731 hci_stack->substate = HCI_INIT_SEND_RESET; 1732 hci_stack->num_cmd_packets = 1; 1733 hci_run(); 1734 break; 1735 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1736 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1737 if (hci_stack->hci_transport->reset_link){ 1738 hci_stack->hci_transport->reset_link(); 1739 } 1740 1741 /* fall through */ 1742 1743 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1744 log_info("Resend HCI Reset - CSR Warm Boot"); 1745 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1746 hci_stack->num_cmd_packets = 1; 1747 hci_run(); 1748 break; 1749 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1750 if (hci_stack->hci_transport->set_baudrate){ 1751 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1752 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1753 hci_stack->hci_transport->set_baudrate(baud_rate); 1754 } 1755 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1756 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1757 if (hci_stack->hci_transport->reset_link){ 1758 log_info("Link Reset"); 1759 hci_stack->hci_transport->reset_link(); 1760 } 1761 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1762 hci_run(); 1763 } 1764 break; 1765 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1766 // otherwise continue 1767 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1768 hci_send_cmd(&hci_read_local_supported_commands); 1769 break; 1770 default: 1771 break; 1772 } 1773 } 1774 #endif 1775 1776 static void hci_initializing_next_state(void){ 1777 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1778 } 1779 1780 static void hci_init_done(void){ 1781 // done. tell the app 1782 log_info("hci_init_done -> HCI_STATE_WORKING"); 1783 hci_stack->state = HCI_STATE_WORKING; 1784 hci_emit_state(); 1785 } 1786 1787 // assumption: hci_can_send_command_packet_now() == true 1788 static void hci_initializing_run(void){ 1789 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1790 1791 if (!hci_can_send_command_packet_now()) return; 1792 1793 #ifndef HAVE_HOST_CONTROLLER_API 1794 bool need_baud_change = hci_stack->config 1795 && hci_stack->chipset 1796 && hci_stack->chipset->set_baudrate_command 1797 && hci_stack->hci_transport->set_baudrate 1798 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1799 #endif 1800 1801 switch (hci_stack->substate){ 1802 case HCI_INIT_SEND_RESET: 1803 hci_state_reset(); 1804 1805 #ifndef HAVE_HOST_CONTROLLER_API 1806 // prepare reset if command complete not received in 100ms 1807 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1808 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1809 btstack_run_loop_add_timer(&hci_stack->timeout); 1810 #endif 1811 // send command 1812 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1813 hci_send_cmd(&hci_reset); 1814 break; 1815 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1816 hci_send_cmd(&hci_read_local_version_information); 1817 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1818 break; 1819 1820 #ifndef HAVE_HOST_CONTROLLER_API 1821 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1822 hci_state_reset(); 1823 // prepare reset if command complete not received in 100ms 1824 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1825 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1826 btstack_run_loop_add_timer(&hci_stack->timeout); 1827 // send command 1828 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1829 hci_send_cmd(&hci_reset); 1830 break; 1831 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1832 hci_state_reset(); 1833 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1834 hci_send_cmd(&hci_reset); 1835 break; 1836 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1837 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1838 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1839 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1840 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1841 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1842 break; 1843 } 1844 case HCI_INIT_SET_BD_ADDR: 1845 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1846 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1847 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1848 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1849 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1850 break; 1851 case HCI_INIT_SEND_READ_LOCAL_NAME: 1852 #ifdef ENABLE_CLASSIC 1853 hci_send_cmd(&hci_read_local_name); 1854 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1855 break; 1856 #endif 1857 /* fall through */ 1858 1859 case HCI_INIT_SEND_BAUD_CHANGE: 1860 if (need_baud_change) { 1861 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1862 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1863 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1864 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1865 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1866 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1867 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1868 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1869 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1870 btstack_run_loop_add_timer(&hci_stack->timeout); 1871 } 1872 break; 1873 } 1874 1875 /* fall through */ 1876 1877 case HCI_INIT_CUSTOM_INIT: 1878 // Custom initialization 1879 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1880 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1881 bool send_cmd = false; 1882 switch (hci_stack->chipset_result){ 1883 case BTSTACK_CHIPSET_VALID_COMMAND: 1884 send_cmd = true; 1885 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1886 break; 1887 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1888 send_cmd = true; 1889 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1890 log_info("CSR Warm Boot"); 1891 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1892 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1893 btstack_run_loop_add_timer(&hci_stack->timeout); 1894 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1895 && hci_stack->config 1896 && hci_stack->chipset 1897 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1898 && hci_stack->hci_transport->set_baudrate 1899 && hci_transport_uart_get_main_baud_rate()){ 1900 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1901 } else { 1902 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1903 } 1904 break; 1905 default: 1906 break; 1907 } 1908 1909 if (send_cmd){ 1910 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1911 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1912 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1913 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1914 break; 1915 } 1916 log_info("Init script done"); 1917 1918 // Init script download on Broadcom chipsets causes: 1919 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1920 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1921 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1922 1923 // - baud rate to reset, restore UART baud rate if needed 1924 if (need_baud_change) { 1925 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1926 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1927 hci_stack->hci_transport->set_baudrate(baud_rate); 1928 } 1929 1930 uint16_t bcm_delay_ms = 300; 1931 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1932 // -> Work around: wait here. 1933 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1934 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1935 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1936 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1937 btstack_run_loop_add_timer(&hci_stack->timeout); 1938 break; 1939 } 1940 } 1941 #endif 1942 /* fall through */ 1943 1944 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1945 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1946 hci_send_cmd(&hci_read_local_supported_commands); 1947 break; 1948 case HCI_INIT_READ_BD_ADDR: 1949 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1950 hci_send_cmd(&hci_read_bd_addr); 1951 break; 1952 case HCI_INIT_READ_BUFFER_SIZE: 1953 // only read buffer size if supported 1954 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1955 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1956 hci_send_cmd(&hci_read_buffer_size); 1957 break; 1958 } 1959 1960 /* fall through */ 1961 1962 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1963 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1964 hci_send_cmd(&hci_read_local_supported_features); 1965 break; 1966 1967 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1968 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1969 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1970 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1971 break; 1972 case HCI_INIT_HOST_BUFFER_SIZE: 1973 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1974 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1975 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1976 break; 1977 #endif 1978 1979 case HCI_INIT_SET_EVENT_MASK: 1980 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1981 if (hci_le_supported()){ 1982 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1983 } else { 1984 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1985 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1986 } 1987 break; 1988 1989 case HCI_INIT_SET_EVENT_MASK_2: 1990 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 1991 // setting Event Mask 2 causes Controller to drop Encryption Change events. 1992 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 1993 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 1994 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 1995 // Encryption Change Event v2 - bit 25 1996 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 1997 break; 1998 } 1999 2000 #ifdef ENABLE_CLASSIC 2001 /* fall through */ 2002 2003 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2004 if (hci_classic_supported() && gap_ssp_supported()){ 2005 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2006 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2007 break; 2008 } 2009 2010 /* fall through */ 2011 2012 case HCI_INIT_WRITE_INQUIRY_MODE: 2013 if (hci_classic_supported()){ 2014 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2015 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2016 break; 2017 } 2018 2019 /* fall through */ 2020 2021 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2022 // skip write secure connections host support if not supported or disabled 2023 if (hci_classic_supported() && hci_stack->secure_connections_enable 2024 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2025 hci_stack->secure_connections_active = true; 2026 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2027 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2028 break; 2029 } 2030 2031 /* fall through */ 2032 2033 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2034 // skip set min encryption key size 2035 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2036 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2037 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2038 break; 2039 } 2040 2041 #ifdef ENABLE_SCO_OVER_HCI 2042 /* fall through */ 2043 2044 // only sent if ENABLE_SCO_OVER_HCI is defined 2045 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2046 // skip write synchronous flow control if not supported 2047 if (hci_classic_supported() 2048 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2049 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2050 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2051 break; 2052 } 2053 /* fall through */ 2054 2055 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2056 // skip write default erroneous data reporting if not supported 2057 if (hci_classic_supported() 2058 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2059 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2060 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2061 break; 2062 } 2063 #endif 2064 2065 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2066 /* fall through */ 2067 2068 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2069 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2070 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2071 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2072 #ifdef ENABLE_SCO_OVER_HCI 2073 log_info("BCM: Route SCO data via HCI transport"); 2074 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2075 #endif 2076 #ifdef ENABLE_SCO_OVER_PCM 2077 log_info("BCM: Route SCO data via PCM interface"); 2078 #ifdef ENABLE_BCM_PCM_WBS 2079 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2080 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2081 #else 2082 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2083 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2084 #endif 2085 #endif 2086 break; 2087 } 2088 #endif 2089 2090 #ifdef ENABLE_SCO_OVER_PCM 2091 /* fall through */ 2092 2093 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2094 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2095 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2096 log_info("BCM: Config PCM interface for I2S"); 2097 #ifdef ENABLE_BCM_PCM_WBS 2098 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2099 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2100 #else 2101 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2102 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2103 #endif 2104 break; 2105 } 2106 #endif 2107 #endif 2108 2109 #ifdef ENABLE_BLE 2110 /* fall through */ 2111 2112 // LE INIT 2113 case HCI_INIT_LE_READ_BUFFER_SIZE: 2114 if (hci_le_supported()){ 2115 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2116 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2117 hci_send_cmd(&hci_le_read_buffer_size_v2); 2118 } else { 2119 hci_send_cmd(&hci_le_read_buffer_size); 2120 } 2121 break; 2122 } 2123 2124 /* fall through */ 2125 2126 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2127 // skip write le host if not supported (e.g. on LE only EM9301) 2128 if (hci_le_supported() 2129 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2130 // LE Supported Host = 1, Simultaneous Host = 0 2131 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2132 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2133 break; 2134 } 2135 2136 /* fall through */ 2137 2138 case HCI_INIT_LE_SET_EVENT_MASK: 2139 if (hci_le_supported()){ 2140 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2141 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2142 break; 2143 } 2144 #endif 2145 2146 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2147 /* fall through */ 2148 2149 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2150 if (hci_le_supported() 2151 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2152 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2153 hci_send_cmd(&hci_le_read_maximum_data_length); 2154 break; 2155 } 2156 2157 /* fall through */ 2158 2159 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2160 if (hci_le_supported() 2161 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2162 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2163 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2164 break; 2165 } 2166 #endif 2167 2168 #ifdef ENABLE_LE_CENTRAL 2169 /* fall through */ 2170 2171 case HCI_INIT_READ_WHITE_LIST_SIZE: 2172 if (hci_le_supported()){ 2173 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2174 hci_send_cmd(&hci_le_read_white_list_size); 2175 break; 2176 } 2177 2178 #endif 2179 2180 #ifdef ENABLE_LE_PERIPHERAL 2181 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2182 /* fall through */ 2183 2184 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2185 if (hci_extended_advertising_supported()){ 2186 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2187 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2188 break; 2189 } 2190 #endif 2191 #endif 2192 /* fall through */ 2193 2194 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2195 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2196 if (hci_le_supported()) { 2197 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2198 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2199 break; 2200 } 2201 #endif 2202 2203 /* fall through */ 2204 2205 case HCI_INIT_DONE: 2206 hci_stack->substate = HCI_INIT_DONE; 2207 // main init sequence complete 2208 #ifdef ENABLE_CLASSIC 2209 // check if initial Classic GAP Tasks are completed 2210 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2211 hci_run_gap_tasks_classic(); 2212 break; 2213 } 2214 #endif 2215 #ifdef ENABLE_BLE 2216 #ifdef ENABLE_LE_CENTRAL 2217 // check if initial LE GAP Tasks are completed 2218 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2219 hci_run_general_gap_le(); 2220 break; 2221 } 2222 #endif 2223 #endif 2224 hci_init_done(); 2225 break; 2226 2227 default: 2228 return; 2229 } 2230 } 2231 2232 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2233 bool command_completed = false; 2234 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2235 uint16_t opcode = little_endian_read_16(packet,3); 2236 if (opcode == hci_stack->last_cmd_opcode){ 2237 command_completed = true; 2238 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2239 } else { 2240 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2241 } 2242 } 2243 2244 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2245 uint8_t status = packet[2]; 2246 uint16_t opcode = little_endian_read_16(packet,4); 2247 if (opcode == hci_stack->last_cmd_opcode){ 2248 if (status){ 2249 command_completed = true; 2250 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2251 } else { 2252 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2253 } 2254 } else { 2255 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2256 } 2257 } 2258 #ifndef HAVE_HOST_CONTROLLER_API 2259 // Vendor == CSR 2260 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2261 // TODO: track actual command 2262 command_completed = true; 2263 } 2264 2265 // Vendor == Toshiba 2266 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2267 // TODO: track actual command 2268 command_completed = true; 2269 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2270 hci_stack->num_cmd_packets = 1; 2271 } 2272 #endif 2273 2274 return command_completed; 2275 } 2276 2277 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2278 2279 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2280 2281 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2282 2283 #ifndef HAVE_HOST_CONTROLLER_API 2284 2285 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2286 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2287 // 2288 // HCI Reset 2289 // Timeout 100 ms 2290 // HCI Reset 2291 // Command Complete Reset 2292 // HCI Read Local Version Information 2293 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2294 // hang... 2295 // 2296 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2297 if (!command_completed 2298 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2299 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2300 2301 uint16_t opcode = little_endian_read_16(packet,3); 2302 if (opcode == hci_reset.opcode){ 2303 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2304 return; 2305 } 2306 } 2307 2308 // CSR & H5 2309 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2310 if (!command_completed 2311 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2312 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2313 2314 uint16_t opcode = little_endian_read_16(packet,3); 2315 if (opcode == hci_reset.opcode){ 2316 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2317 return; 2318 } 2319 } 2320 2321 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2322 // fix: Correct substate and behave as command below 2323 if (command_completed){ 2324 switch (hci_stack->substate){ 2325 case HCI_INIT_SEND_RESET: 2326 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2327 break; 2328 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2329 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2330 break; 2331 default: 2332 break; 2333 } 2334 } 2335 2336 #endif 2337 2338 if (!command_completed) return; 2339 2340 bool need_baud_change = false; 2341 bool need_addr_change = false; 2342 2343 #ifndef HAVE_HOST_CONTROLLER_API 2344 need_baud_change = hci_stack->config 2345 && hci_stack->chipset 2346 && hci_stack->chipset->set_baudrate_command 2347 && hci_stack->hci_transport->set_baudrate 2348 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2349 2350 need_addr_change = hci_stack->custom_bd_addr_set 2351 && hci_stack->chipset 2352 && hci_stack->chipset->set_bd_addr_command; 2353 #endif 2354 2355 switch(hci_stack->substate){ 2356 2357 #ifndef HAVE_HOST_CONTROLLER_API 2358 case HCI_INIT_SEND_RESET: 2359 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2360 // fix: just correct substate and behave as command below 2361 2362 /* fall through */ 2363 #endif 2364 2365 case HCI_INIT_W4_SEND_RESET: 2366 btstack_run_loop_remove_timer(&hci_stack->timeout); 2367 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2368 return; 2369 2370 #ifndef HAVE_HOST_CONTROLLER_API 2371 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2372 // for STLC2500D, baud rate change already happened. 2373 // for others, baud rate gets changed now 2374 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2375 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2376 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2377 hci_stack->hci_transport->set_baudrate(baud_rate); 2378 } 2379 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2380 return; 2381 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2382 btstack_run_loop_remove_timer(&hci_stack->timeout); 2383 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2384 return; 2385 case HCI_INIT_W4_CUSTOM_INIT: 2386 // repeat custom init 2387 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2388 return; 2389 #endif 2390 2391 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2392 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2393 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2394 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2395 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2396 return; 2397 } 2398 if (need_addr_change){ 2399 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2400 return; 2401 } 2402 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2403 return; 2404 #ifndef HAVE_HOST_CONTROLLER_API 2405 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2406 if (need_baud_change){ 2407 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2408 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2409 hci_stack->hci_transport->set_baudrate(baud_rate); 2410 } 2411 if (need_addr_change){ 2412 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2413 return; 2414 } 2415 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2416 return; 2417 case HCI_INIT_W4_SET_BD_ADDR: 2418 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2419 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2420 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2421 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2422 return; 2423 } 2424 // skipping st warm boot 2425 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2426 return; 2427 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2428 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2429 return; 2430 #endif 2431 2432 case HCI_INIT_DONE: 2433 // set state if we came here by fall through 2434 hci_stack->substate = HCI_INIT_DONE; 2435 return; 2436 2437 default: 2438 break; 2439 } 2440 hci_initializing_next_state(); 2441 } 2442 2443 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2444 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2445 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2446 // check if we have been aware of the HCI connection 2447 switch (conn->state){ 2448 case SENT_CREATE_CONNECTION: 2449 case RECEIVED_CONNECTION_REQUEST: 2450 break; 2451 default: 2452 return; 2453 } 2454 2455 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2456 bd_addr_t bd_address; 2457 (void)memcpy(&bd_address, conn->address, 6); 2458 2459 #ifdef ENABLE_CLASSIC 2460 // cache needed data 2461 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2462 #endif 2463 2464 // connection failed, remove entry 2465 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2466 btstack_memory_hci_connection_free( conn ); 2467 2468 #ifdef ENABLE_CLASSIC 2469 // notify client if dedicated bonding 2470 if (notify_dedicated_bonding_failed){ 2471 log_info("hci notify_dedicated_bonding_failed"); 2472 hci_emit_dedicated_bonding_result(bd_address, status); 2473 } 2474 2475 // if authentication error, also delete link key 2476 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2477 gap_drop_link_key_for_bd_addr(bd_address); 2478 } 2479 #else 2480 UNUSED(status); 2481 #endif 2482 } 2483 2484 #ifdef ENABLE_CLASSIC 2485 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2486 // SSP Controller 2487 if (features[6] & (1 << 3)){ 2488 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2489 } 2490 // eSCO 2491 if (features[3] & (1<<7)){ 2492 conn->remote_supported_features[0] |= 1; 2493 } 2494 // Extended features 2495 if (features[7] & (1<<7)){ 2496 conn->remote_supported_features[0] |= 2; 2497 } 2498 } 2499 2500 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2501 // SSP Host 2502 if (features[0] & (1 << 0)){ 2503 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2504 } 2505 // SC Host 2506 if (features[0] & (1 << 3)){ 2507 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2508 } 2509 } 2510 2511 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2512 // SC Controller 2513 if (features[1] & (1 << 0)){ 2514 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2515 } 2516 } 2517 2518 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2519 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2520 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2521 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2522 if (conn->bonding_flags & BONDING_DEDICATED){ 2523 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2524 } 2525 } 2526 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2527 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2528 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2529 } 2530 2531 #endif 2532 2533 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2534 // handle BT initialization 2535 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2536 hci_initializing_event_handler(packet, size); 2537 } 2538 2539 // help with BT sleep 2540 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2541 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2542 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2543 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2544 hci_initializing_next_state(); 2545 } 2546 } 2547 2548 #ifdef ENABLE_CLASSIC 2549 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2550 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2551 conn->encryption_key_size = encryption_key_size; 2552 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2553 2554 // trigger disconnect for dedicated bonding, skip emit security level as disconnect is pending 2555 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2556 conn->bonding_flags &= ~BONDING_DEDICATED; 2557 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2558 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2559 return; 2560 } 2561 2562 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2563 conn->requested_security_level = LEVEL_0; 2564 hci_emit_security_level(conn->con_handle, security_level); 2565 return; 2566 } 2567 2568 // Request remote features if not already done 2569 hci_trigger_remote_features_for_connection(conn); 2570 2571 // Request Authentication if not already done 2572 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2573 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2574 } 2575 #endif 2576 2577 static void hci_store_local_supported_commands(const uint8_t * packet){ 2578 // create mapping table 2579 #define X(name, offset, bit) { offset, bit }, 2580 static struct { 2581 uint8_t byte_offset; 2582 uint8_t bit_position; 2583 } supported_hci_commands_map [] = { 2584 SUPPORTED_HCI_COMMANDS 2585 }; 2586 #undef X 2587 2588 // create names for debug purposes 2589 #ifdef ENABLE_LOG_DEBUG 2590 #define X(name, offset, bit) #name, 2591 static const char * command_names[] = { 2592 SUPPORTED_HCI_COMMANDS 2593 }; 2594 #undef X 2595 #endif 2596 2597 hci_stack->local_supported_commands = 0; 2598 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2599 uint16_t i; 2600 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2601 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2602 #ifdef ENABLE_LOG_DEBUG 2603 log_info("Command %s (%u) supported %u/%u", command_names[i], i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2604 #else 2605 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2606 #endif 2607 hci_stack->local_supported_commands |= (1LU << i); 2608 } 2609 } 2610 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2611 } 2612 2613 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2614 UNUSED(size); 2615 2616 uint16_t manufacturer; 2617 #ifdef ENABLE_CLASSIC 2618 hci_con_handle_t handle; 2619 hci_connection_t * conn; 2620 #endif 2621 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2622 uint8_t status; 2623 #endif 2624 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2625 le_audio_cig_t * cig; 2626 #endif 2627 2628 // get num cmd packets - limit to 1 to reduce complexity 2629 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2630 2631 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2632 switch (opcode){ 2633 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2634 if (packet[5]) break; 2635 // terminate, name 248 chars 2636 packet[6+248] = 0; 2637 log_info("local name: %s", &packet[6]); 2638 break; 2639 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2640 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2641 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2642 uint16_t acl_len = little_endian_read_16(packet, 6); 2643 uint16_t sco_len = packet[8]; 2644 2645 // determine usable ACL/SCO payload size 2646 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2647 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2648 2649 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2650 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2651 2652 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2653 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2654 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2655 } 2656 break; 2657 case HCI_OPCODE_HCI_READ_RSSI: 2658 if (packet[5] == ERROR_CODE_SUCCESS){ 2659 uint8_t event[5]; 2660 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2661 event[1] = 3; 2662 (void)memcpy(&event[2], &packet[6], 3); 2663 hci_emit_event(event, sizeof(event), 1); 2664 } 2665 break; 2666 #ifdef ENABLE_BLE 2667 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2668 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2669 hci_stack->le_iso_packets_total_num = packet[11]; 2670 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2671 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2672 2673 /* fall through */ 2674 2675 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2676 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2677 hci_stack->le_acl_packets_total_num = packet[8]; 2678 // determine usable ACL payload size 2679 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2680 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2681 } 2682 log_info("hci_le_read_buffer_size: acl size %u, acl count %u", hci_stack->le_data_packets_length, hci_stack->le_acl_packets_total_num); 2683 break; 2684 #endif 2685 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2686 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2687 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2688 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2689 log_info("hci_le_read_maximum_data_length: tx octets %u, tx time %u us", hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2690 break; 2691 #endif 2692 #ifdef ENABLE_LE_CENTRAL 2693 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2694 hci_stack->le_whitelist_capacity = packet[6]; 2695 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2696 break; 2697 #endif 2698 #ifdef ENABLE_LE_PERIPHERAL 2699 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2700 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2701 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2702 break; 2703 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2704 if (hci_stack->le_advertising_set_in_current_command != 0) { 2705 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2706 hci_stack->le_advertising_set_in_current_command = 0; 2707 if (advertising_set == NULL) break; 2708 uint8_t adv_status = packet[6]; 2709 uint8_t tx_power = packet[7]; 2710 uint8_t event[] = { HCI_EVENT_META_GAP, 4, GAP_SUBEVENT_ADVERTISING_SET_INSTALLED, hci_stack->le_advertising_set_in_current_command, adv_status, tx_power }; 2711 if (adv_status == 0){ 2712 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2713 } 2714 hci_emit_event(event, sizeof(event), 1); 2715 } 2716 break; 2717 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2718 if (hci_stack->le_advertising_set_in_current_command != 0) { 2719 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2720 hci_stack->le_advertising_set_in_current_command = 0; 2721 if (advertising_set == NULL) break; 2722 uint8_t adv_status = packet[5]; 2723 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2724 if (adv_status == 0){ 2725 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2726 } 2727 hci_emit_event(event, sizeof(event), 1); 2728 } 2729 break; 2730 #endif 2731 #endif 2732 case HCI_OPCODE_HCI_READ_BD_ADDR: 2733 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2734 log_info("Local Address, Status: 0x%02x: Addr: %s", packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE], bd_addr_to_str(hci_stack->local_bd_addr)); 2735 #ifdef ENABLE_CLASSIC 2736 if (hci_stack->link_key_db){ 2737 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2738 } 2739 #endif 2740 break; 2741 #ifdef ENABLE_CLASSIC 2742 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2743 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2744 break; 2745 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2746 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2747 if (status == ERROR_CODE_SUCCESS) { 2748 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2749 } else { 2750 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2751 } 2752 break; 2753 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2754 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2755 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2756 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2757 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2758 hci_emit_event(event, sizeof(event), 1); 2759 } 2760 break; 2761 #endif 2762 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2763 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2764 2765 #ifdef ENABLE_CLASSIC 2766 // determine usable ACL packet types based on host buffer size and supported features 2767 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2768 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2769 #endif 2770 // Classic/LE 2771 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2772 break; 2773 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2774 manufacturer = little_endian_read_16(packet, 10); 2775 // map Cypress to Broadcom 2776 if (manufacturer == BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR){ 2777 log_info("Treat Cypress as Broadcom"); 2778 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2779 little_endian_store_16(packet, 10, manufacturer); 2780 } 2781 hci_stack->manufacturer = manufacturer; 2782 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2783 break; 2784 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2785 hci_store_local_supported_commands(packet); 2786 break; 2787 #ifdef ENABLE_CLASSIC 2788 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2789 if (packet[5]) return; 2790 hci_stack->synchronous_flow_control_enabled = 1; 2791 break; 2792 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2793 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2794 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2795 conn = hci_connection_for_handle(handle); 2796 if (conn != NULL) { 2797 uint8_t key_size = 0; 2798 if (status == 0){ 2799 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2800 log_info("Handle %04x key Size: %u", handle, key_size); 2801 } else { 2802 key_size = 1; 2803 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2804 } 2805 hci_handle_read_encryption_key_size_complete(conn, key_size); 2806 } 2807 break; 2808 // assert pairing complete event is emitted. 2809 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2810 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2811 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2812 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2813 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2814 // lookup connection by gap pairing addr 2815 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2816 if (conn == NULL) break; 2817 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2818 break; 2819 2820 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2821 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2822 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2823 uint8_t event[67]; 2824 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2825 event[1] = 65; 2826 (void)memset(&event[2], 0, 65); 2827 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2828 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2829 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2830 event[2] = 3; 2831 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2832 } else { 2833 event[2] = 1; 2834 } 2835 } 2836 hci_emit_event(event, sizeof(event), 0); 2837 break; 2838 } 2839 2840 // note: only needed if user does not provide OOB data 2841 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2842 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2843 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2844 if (conn == NULL) break; 2845 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2846 break; 2847 #endif 2848 #endif 2849 #ifdef ENABLE_BLE 2850 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2851 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2852 // lookup CIG 2853 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2854 if (cig != NULL){ 2855 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2856 uint8_t i = 0; 2857 if (status == ERROR_CODE_SUCCESS){ 2858 // assign CIS handles to pre-allocated CIS 2859 btstack_linked_list_iterator_t it; 2860 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2861 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2862 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2863 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2864 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2865 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2866 iso_stream->con_handle = cis_handle; 2867 cig->cis_con_handles[i] = cis_handle; 2868 i++; 2869 } 2870 } 2871 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2872 hci_emit_cig_created(cig, status); 2873 } else { 2874 hci_emit_cig_created(cig, status); 2875 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2876 } 2877 } 2878 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2879 break; 2880 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2881 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2882 if (status != ERROR_CODE_SUCCESS){ 2883 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2884 } 2885 break; 2886 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2887 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2888 if (status != ERROR_CODE_SUCCESS){ 2889 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2890 } 2891 break; 2892 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2893 // lookup BIG by state 2894 btstack_linked_list_iterator_t it; 2895 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2896 while (btstack_linked_list_iterator_has_next(&it)) { 2897 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2898 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2899 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2900 if (status == ERROR_CODE_SUCCESS){ 2901 big->state_vars.next_bis++; 2902 if (big->state_vars.next_bis == big->num_bis){ 2903 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2904 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2905 } else { 2906 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2907 } 2908 } else { 2909 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2910 big->state_vars.status = status; 2911 } 2912 return; 2913 } 2914 } 2915 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2916 while (btstack_linked_list_iterator_has_next(&it)) { 2917 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2918 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2919 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2920 if (status == ERROR_CODE_SUCCESS){ 2921 big_sync->state_vars.next_bis++; 2922 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2923 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2924 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2925 } else { 2926 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2927 } 2928 } else { 2929 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2930 big_sync->state_vars.status = status; 2931 } 2932 return; 2933 } 2934 } 2935 // Lookup CIS via active group operation 2936 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 2937 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 2938 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2939 2940 // lookup CIS by state 2941 btstack_linked_list_iterator_t it; 2942 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2943 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2944 while (btstack_linked_list_iterator_has_next(&it)){ 2945 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2946 handle = iso_stream->con_handle; 2947 switch (iso_stream->state){ 2948 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 2949 if (status != ERROR_CODE_SUCCESS){ 2950 hci_iso_stream_finalize(iso_stream); 2951 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, status); 2952 break; 2953 } 2954 if (iso_stream->max_sdu_c_to_p > 0){ 2955 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 2956 } else { 2957 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, ERROR_CODE_SUCCESS); 2958 } 2959 break; 2960 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 2961 if (status != ERROR_CODE_SUCCESS){ 2962 hci_iso_stream_finalize(iso_stream); 2963 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, status); 2964 break; 2965 } 2966 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, ERROR_CODE_SUCCESS); 2967 break; 2968 default: 2969 break; 2970 } 2971 } 2972 } else { 2973 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2974 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2975 if (cig != NULL) { 2976 // emit cis created if all ISO Paths have been created 2977 // assume we are central 2978 uint8_t cis_index = cig->state_vars.next_cis >> 1; 2979 uint8_t cis_direction = cig->state_vars.next_cis & 1; 2980 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 2981 // if outgoing has been setup, or incoming was setup but outgoing not required 2982 if ((cis_direction == 1) || (outgoing_needed == false)){ 2983 hci_emit_cis_created(cig->cig_id, cig->cis_con_handles[cis_index], status); 2984 } 2985 // next state 2986 cig->state_vars.next_cis++; 2987 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 2988 } 2989 } 2990 } 2991 break; 2992 } 2993 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 2994 // lookup BIG by state 2995 btstack_linked_list_iterator_t it; 2996 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2997 while (btstack_linked_list_iterator_has_next(&it)) { 2998 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2999 uint8_t big_handle = big_sync->big_handle; 3000 switch (big_sync->state){ 3001 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3002 btstack_linked_list_iterator_remove(&it); 3003 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3004 return; 3005 default: 3006 btstack_linked_list_iterator_remove(&it); 3007 hci_emit_big_sync_stopped(big_handle); 3008 return; 3009 } 3010 } 3011 break; 3012 } 3013 #endif 3014 #endif 3015 default: 3016 break; 3017 } 3018 } 3019 3020 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3021 UNUSED(size); 3022 3023 // get num cmd packets - limit to 1 to reduce complexity 3024 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3025 3026 // get opcode and command status 3027 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3028 3029 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3030 uint8_t status = hci_event_command_status_get_status(packet); 3031 #endif 3032 3033 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3034 bd_addr_type_t addr_type; 3035 #endif 3036 3037 switch (opcode){ 3038 #ifdef ENABLE_CLASSIC 3039 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3040 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3041 #endif 3042 #ifdef ENABLE_LE_CENTRAL 3043 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3044 #endif 3045 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3046 addr_type = hci_stack->outgoing_addr_type; 3047 3048 // reset outgoing address info 3049 memset(hci_stack->outgoing_addr, 0, 6); 3050 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3051 3052 // on error 3053 if (status != ERROR_CODE_SUCCESS){ 3054 #ifdef ENABLE_LE_CENTRAL 3055 if (hci_is_le_connection_type(addr_type)){ 3056 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3057 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3058 } 3059 #endif 3060 // error => outgoing connection failed 3061 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(hci_stack->outgoing_addr, addr_type); 3062 if (conn != NULL){ 3063 hci_handle_connection_failed(conn, status); 3064 } 3065 } 3066 break; 3067 #endif 3068 #ifdef ENABLE_CLASSIC 3069 case HCI_OPCODE_HCI_INQUIRY: 3070 if (status == ERROR_CODE_SUCCESS) { 3071 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3072 } else { 3073 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3074 } 3075 break; 3076 #endif 3077 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3078 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3079 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3080 if (status == ERROR_CODE_SUCCESS){ 3081 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3082 } else { 3083 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3084 } 3085 break; 3086 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3087 default: 3088 break; 3089 } 3090 } 3091 3092 #ifdef ENABLE_BLE 3093 static void event_handle_le_connection_complete(const uint8_t * packet){ 3094 bd_addr_t addr; 3095 bd_addr_type_t addr_type; 3096 hci_connection_t * conn; 3097 3098 // Connection management 3099 reverse_bd_addr(&packet[8], addr); 3100 addr_type = (bd_addr_type_t)packet[7]; 3101 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 3102 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3103 3104 #ifdef ENABLE_LE_CENTRAL 3105 // handle error: error is reported only to the initiator -> outgoing connection 3106 if (packet[3]){ 3107 3108 // handle cancelled outgoing connection 3109 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3110 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3111 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3112 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3113 // reset state 3114 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3115 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3116 // get outgoing connection conn struct for direct connect 3117 conn = gap_get_outgoing_connection(); 3118 } 3119 3120 // outgoing le connection establishment is done 3121 if (conn){ 3122 // remove entry 3123 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3124 btstack_memory_hci_connection_free( conn ); 3125 } 3126 return; 3127 } 3128 #endif 3129 3130 // on success, both hosts receive connection complete event 3131 if (packet[6] == HCI_ROLE_MASTER){ 3132 #ifdef ENABLE_LE_CENTRAL 3133 // if we're master on an le connection, it was an outgoing connection and we're done with it 3134 // note: no hci_connection_t object exists yet for connect with whitelist 3135 if (hci_is_le_connection_type(addr_type)){ 3136 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3137 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3138 } 3139 #endif 3140 } else { 3141 #ifdef ENABLE_LE_PERIPHERAL 3142 // if we're slave, it was an incoming connection, advertisements have stopped 3143 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3144 #endif 3145 } 3146 3147 // LE connections are auto-accepted, so just create a connection if there isn't one already 3148 if (!conn){ 3149 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3150 } 3151 3152 // no memory, sorry. 3153 if (!conn){ 3154 return; 3155 } 3156 3157 conn->state = OPEN; 3158 conn->role = packet[6]; 3159 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3160 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3161 3162 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3163 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3164 3165 #ifdef ENABLE_LE_PERIPHERAL 3166 if (packet[6] == HCI_ROLE_SLAVE){ 3167 hci_update_advertisements_enabled_for_current_roles(); 3168 } 3169 #endif 3170 3171 // init unenhanced att bearer mtu 3172 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3173 conn->att_connection.mtu_exchanged = false; 3174 3175 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3176 3177 // restart timer 3178 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3179 // btstack_run_loop_add_timer(&conn->timeout); 3180 3181 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3182 3183 hci_emit_nr_connections_changed(); 3184 } 3185 #endif 3186 3187 #ifdef ENABLE_CLASSIC 3188 static bool hci_ssp_security_level_possible_for_io_cap(gap_security_level_t level, uint8_t io_cap_local, uint8_t io_cap_remote){ 3189 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3190 // LEVEL_4 is tested by l2cap 3191 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3192 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3193 if (level >= LEVEL_3){ 3194 // MITM not possible without keyboard or display 3195 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3196 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3197 3198 // MITM possible if one side has keyboard and the other has keyboard or display 3199 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3200 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3201 3202 // MITM not possible if one side has only display and other side has no keyboard 3203 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3204 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3205 } 3206 // LEVEL 2 requires SSP, which is a given 3207 return true; 3208 } 3209 3210 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3211 // get requested security level 3212 gap_security_level_t requested_security_level = conn->requested_security_level; 3213 if (hci_stack->gap_secure_connections_only_mode){ 3214 requested_security_level = LEVEL_4; 3215 } 3216 3217 // assess security: LEVEL 4 requires SC 3218 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3219 if ((requested_security_level == LEVEL_4) && 3220 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3221 !hci_remote_sc_enabled(conn)){ 3222 log_info("Level 4 required, but SC not supported -> abort"); 3223 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3224 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3225 return; 3226 } 3227 3228 // assess security based on io capabilities 3229 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3230 // responder: fully validate io caps of both sides as well as OOB data 3231 bool security_possible = false; 3232 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3233 3234 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3235 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3236 // so we merge the OOB data availability 3237 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3238 if (conn->classic_oob_c_192 != NULL){ 3239 have_oob_data |= 1; 3240 } 3241 if (conn->classic_oob_c_256 != NULL){ 3242 have_oob_data |= 2; 3243 } 3244 // for up to Level 3, either P-192 as well as P-256 will do 3245 // if we don't support SC, then a) conn->classic_oob_c_256 will be NULL and b) remote should not report P-256 available 3246 // if remote does not SC, we should not receive P-256 data either 3247 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3248 security_possible = true; 3249 } 3250 // for Level 4, P-256 is needed 3251 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3252 security_possible = true; 3253 } 3254 #endif 3255 3256 if (security_possible == false){ 3257 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3258 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3259 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3260 return; 3261 } 3262 } else { 3263 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3264 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3265 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3266 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3267 log_info("Level 3+ required, but no input/output -> abort"); 3268 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3269 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3270 return; 3271 } 3272 #endif 3273 #endif 3274 } 3275 3276 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3277 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3278 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3279 } else { 3280 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3281 } 3282 #endif 3283 } 3284 3285 #endif 3286 3287 static void event_handler(uint8_t *packet, uint16_t size){ 3288 3289 uint16_t event_length = packet[1]; 3290 3291 // assert packet is complete 3292 if (size != (event_length + 2u)){ 3293 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3294 return; 3295 } 3296 3297 hci_con_handle_t handle; 3298 hci_connection_t * conn; 3299 int i; 3300 3301 #ifdef ENABLE_CLASSIC 3302 hci_link_type_t link_type; 3303 bd_addr_t addr; 3304 bd_addr_type_t addr_type; 3305 #endif 3306 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3307 hci_iso_stream_t * iso_stream; 3308 le_audio_big_t * big; 3309 le_audio_big_sync_t * big_sync; 3310 #endif 3311 3312 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3313 3314 switch (hci_event_packet_get_type(packet)) { 3315 3316 case HCI_EVENT_COMMAND_COMPLETE: 3317 handle_command_complete_event(packet, size); 3318 break; 3319 3320 case HCI_EVENT_COMMAND_STATUS: 3321 handle_command_status_event(packet, size); 3322 break; 3323 3324 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3325 if (size < 3) return; 3326 uint16_t num_handles = packet[2]; 3327 if (size != (3u + num_handles * 4u)) return; 3328 #ifdef ENABLE_CLASSIC 3329 bool notify_sco = false; 3330 #endif 3331 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3332 bool notify_iso = false; 3333 #endif 3334 uint16_t offset = 3; 3335 for (i=0; i<num_handles;i++){ 3336 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3337 offset += 2u; 3338 uint16_t num_packets = little_endian_read_16(packet, offset); 3339 offset += 2u; 3340 3341 conn = hci_connection_for_handle(handle); 3342 if (conn != NULL) { 3343 3344 if (conn->num_packets_sent >= num_packets) { 3345 conn->num_packets_sent -= num_packets; 3346 } else { 3347 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3348 conn->num_packets_sent = 0; 3349 } 3350 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3351 #ifdef ENABLE_CLASSIC 3352 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3353 notify_sco = true; 3354 } 3355 #endif 3356 } 3357 3358 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3359 hci_controller_dump_packets(); 3360 #endif 3361 3362 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3363 if (conn == NULL){ 3364 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3365 if (iso_stream != NULL){ 3366 if (iso_stream->num_packets_sent >= num_packets) { 3367 iso_stream->num_packets_sent -= num_packets; 3368 } else { 3369 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3370 iso_stream->num_packets_sent = 0; 3371 } 3372 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3373 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3374 if (big != NULL){ 3375 big->num_completed_timestamp_current_valid = true; 3376 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3377 } 3378 } 3379 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3380 num_packets, handle, iso_stream->num_packets_sent); 3381 notify_iso = true; 3382 } 3383 } 3384 #endif 3385 } 3386 3387 #ifdef ENABLE_CLASSIC 3388 if (notify_sco){ 3389 hci_notify_if_sco_can_send_now(); 3390 } 3391 #endif 3392 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3393 if (notify_iso){ 3394 hci_iso_notify_can_send_now(); 3395 } 3396 #endif 3397 break; 3398 } 3399 3400 #ifdef ENABLE_CLASSIC 3401 case HCI_EVENT_FLUSH_OCCURRED: 3402 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3403 handle = hci_event_flush_occurred_get_handle(packet); 3404 conn = hci_connection_for_handle(handle); 3405 if (conn) { 3406 log_info("Flush occurred, disconnect 0x%04x", handle); 3407 conn->state = SEND_DISCONNECT; 3408 } 3409 break; 3410 3411 case HCI_EVENT_INQUIRY_COMPLETE: 3412 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3413 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3414 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3415 hci_emit_event(event, sizeof(event), 1); 3416 } 3417 break; 3418 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3419 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3420 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3421 } 3422 break; 3423 case HCI_EVENT_CONNECTION_REQUEST: 3424 reverse_bd_addr(&packet[2], addr); 3425 link_type = (hci_link_type_t) packet[11]; 3426 3427 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3428 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3429 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3430 bd_addr_copy(hci_stack->decline_addr, addr); 3431 break; 3432 } 3433 3434 if (hci_stack->gap_classic_accept_callback != NULL){ 3435 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3436 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3437 bd_addr_copy(hci_stack->decline_addr, addr); 3438 break; 3439 } 3440 } 3441 3442 // TODO: eval COD 8-10 3443 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3444 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3445 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3446 if (!conn) { 3447 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3448 } 3449 if (!conn) { 3450 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3451 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3452 bd_addr_copy(hci_stack->decline_addr, addr); 3453 hci_run(); 3454 // avoid event to higher layer 3455 return; 3456 } 3457 conn->role = HCI_ROLE_SLAVE; 3458 conn->state = RECEIVED_CONNECTION_REQUEST; 3459 // store info about eSCO 3460 if (link_type == HCI_LINK_TYPE_ESCO){ 3461 conn->remote_supported_features[0] |= 1; 3462 } 3463 hci_run(); 3464 break; 3465 3466 case HCI_EVENT_CONNECTION_COMPLETE: 3467 // Connection management 3468 reverse_bd_addr(&packet[5], addr); 3469 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3470 addr_type = BD_ADDR_TYPE_ACL; 3471 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3472 if (conn) { 3473 switch (conn->state){ 3474 // expected states 3475 case ACCEPTED_CONNECTION_REQUEST: 3476 case SENT_CREATE_CONNECTION: 3477 break; 3478 // unexpected state -> ignore 3479 default: 3480 // don't forward event to app 3481 return; 3482 } 3483 if (!packet[2]){ 3484 conn->state = OPEN; 3485 conn->con_handle = little_endian_read_16(packet, 3); 3486 3487 // trigger write supervision timeout if we're master 3488 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3489 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3490 } 3491 3492 // trigger write automatic flush timeout 3493 if (hci_stack->automatic_flush_timeout != 0){ 3494 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3495 } 3496 3497 // restart timer 3498 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3499 btstack_run_loop_add_timer(&conn->timeout); 3500 3501 // trigger remote features for dedicated bonding 3502 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3503 hci_trigger_remote_features_for_connection(conn); 3504 } 3505 3506 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3507 3508 hci_emit_nr_connections_changed(); 3509 } else { 3510 // connection failed 3511 hci_handle_connection_failed(conn, packet[2]); 3512 } 3513 } 3514 break; 3515 3516 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3517 reverse_bd_addr(&packet[5], addr); 3518 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3519 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3520 if (packet[2]){ 3521 // connection failed 3522 if (conn){ 3523 hci_handle_connection_failed(conn, packet[2]); 3524 } 3525 break; 3526 } 3527 if (!conn) { 3528 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3529 } 3530 if (!conn) { 3531 break; 3532 } 3533 conn->state = OPEN; 3534 conn->con_handle = little_endian_read_16(packet, 3); 3535 3536 #ifdef ENABLE_SCO_OVER_HCI 3537 // update SCO 3538 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3539 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3540 } 3541 // trigger can send now 3542 if (hci_have_usb_transport()){ 3543 hci_stack->sco_can_send_now = true; 3544 } 3545 #endif 3546 #ifdef HAVE_SCO_TRANSPORT 3547 // configure sco transport 3548 if (hci_stack->sco_transport != NULL){ 3549 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3550 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3551 } 3552 #endif 3553 break; 3554 3555 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3556 handle = little_endian_read_16(packet, 3); 3557 conn = hci_connection_for_handle(handle); 3558 if (!conn) break; 3559 if (!packet[2]){ 3560 const uint8_t * features = &packet[5]; 3561 hci_handle_remote_features_page_0(conn, features); 3562 3563 // read extended features if possible 3564 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3565 && ((conn->remote_supported_features[0] & 2) != 0)) { 3566 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3567 break; 3568 } 3569 } 3570 hci_handle_remote_features_received(conn); 3571 break; 3572 3573 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3574 handle = little_endian_read_16(packet, 3); 3575 conn = hci_connection_for_handle(handle); 3576 if (!conn) break; 3577 // status = ok, page = 1 3578 if (!packet[2]) { 3579 uint8_t page_number = packet[5]; 3580 uint8_t maximum_page_number = packet[6]; 3581 const uint8_t * features = &packet[7]; 3582 bool done = false; 3583 switch (page_number){ 3584 case 1: 3585 hci_handle_remote_features_page_1(conn, features); 3586 if (maximum_page_number >= 2){ 3587 // get Secure Connections (Controller) from Page 2 if available 3588 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3589 } else { 3590 // otherwise, assume SC (Controller) == SC (Host) 3591 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3592 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3593 } 3594 done = true; 3595 } 3596 break; 3597 case 2: 3598 hci_handle_remote_features_page_2(conn, features); 3599 done = true; 3600 break; 3601 default: 3602 break; 3603 } 3604 if (!done) break; 3605 } 3606 hci_handle_remote_features_received(conn); 3607 break; 3608 3609 case HCI_EVENT_LINK_KEY_REQUEST: 3610 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3611 hci_event_link_key_request_get_bd_addr(packet, addr); 3612 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3613 if (!conn) break; 3614 3615 // lookup link key in db if not cached 3616 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3617 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3618 } 3619 3620 // response sent by hci_run() 3621 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3622 #endif 3623 break; 3624 3625 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3626 hci_event_link_key_request_get_bd_addr(packet, addr); 3627 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3628 if (!conn) break; 3629 3630 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3631 3632 // CVE-2020-26555: ignore NULL link key 3633 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3634 if (btstack_is_null(&packet[8], 16)) break; 3635 3636 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3637 // Change Connection Encryption keeps link key type 3638 if (link_key_type != CHANGED_COMBINATION_KEY){ 3639 conn->link_key_type = link_key_type; 3640 } 3641 3642 // cache link key. link keys stored in little-endian format for legacy reasons 3643 memcpy(&conn->link_key, &packet[8], 16); 3644 3645 // only store link key: 3646 // - if bondable enabled 3647 if (hci_stack->bondable == false) break; 3648 // - if security level sufficient 3649 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3650 // - for SSP, also check if remote side requested bonding as well 3651 if (conn->link_key_type != COMBINATION_KEY){ 3652 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3653 if (!remote_bonding){ 3654 break; 3655 } 3656 } 3657 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3658 break; 3659 } 3660 3661 case HCI_EVENT_PIN_CODE_REQUEST: 3662 hci_event_pin_code_request_get_bd_addr(packet, addr); 3663 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3664 if (!conn) break; 3665 3666 hci_pairing_started(conn, false); 3667 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3668 if (!hci_stack->bondable ){ 3669 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3670 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3671 hci_run(); 3672 return; 3673 } 3674 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3675 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3676 log_info("Level 4 required, but SC not supported -> abort"); 3677 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3678 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3679 hci_run(); 3680 return; 3681 } 3682 break; 3683 3684 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3685 hci_event_io_capability_response_get_bd_addr(packet, addr); 3686 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3687 if (!conn) break; 3688 3689 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3690 hci_pairing_started(conn, true); 3691 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3692 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3693 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3694 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3695 #endif 3696 break; 3697 3698 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3699 hci_event_io_capability_response_get_bd_addr(packet, addr); 3700 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3701 if (!conn) break; 3702 3703 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3704 hci_connection_timestamp(conn); 3705 hci_pairing_started(conn, true); 3706 break; 3707 3708 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3709 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3710 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3711 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3712 if (!conn) break; 3713 3714 hci_connection_timestamp(conn); 3715 3716 hci_pairing_started(conn, true); 3717 3718 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3719 break; 3720 #endif 3721 3722 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3723 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3724 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3725 if (!conn) break; 3726 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3727 if (hci_stack->ssp_auto_accept){ 3728 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3729 }; 3730 } else { 3731 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3732 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3733 // don't forward event to app 3734 hci_run(); 3735 return; 3736 } 3737 break; 3738 3739 case HCI_EVENT_USER_PASSKEY_REQUEST: 3740 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3741 if (hci_stack->ssp_auto_accept){ 3742 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3743 }; 3744 break; 3745 3746 case HCI_EVENT_MODE_CHANGE: 3747 handle = hci_event_mode_change_get_handle(packet); 3748 conn = hci_connection_for_handle(handle); 3749 if (!conn) break; 3750 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3751 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3752 break; 3753 #endif 3754 3755 case HCI_EVENT_ENCRYPTION_CHANGE: 3756 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3757 handle = hci_event_encryption_change_get_connection_handle(packet); 3758 conn = hci_connection_for_handle(handle); 3759 if (!conn) break; 3760 if (hci_event_encryption_change_get_status(packet) == 0u) { 3761 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3762 if (encryption_enabled){ 3763 if (hci_is_le_connection(conn)){ 3764 // For LE, we accept connection as encrypted 3765 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3766 } 3767 #ifdef ENABLE_CLASSIC 3768 else { 3769 3770 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3771 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3772 bool connected_uses_aes_ccm = encryption_enabled == 2; 3773 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3774 log_info("SC during pairing, but only E0 now -> abort"); 3775 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3776 break; 3777 } 3778 3779 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3780 if (connected_uses_aes_ccm){ 3781 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3782 } 3783 3784 #ifdef ENABLE_TESTING_SUPPORT 3785 // work around for issue with PTS dongle 3786 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3787 #endif 3788 // validate encryption key size 3789 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3790 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3791 // already got encryption key size 3792 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3793 } else { 3794 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3795 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3796 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3797 } else { 3798 // if not, pretend everything is perfect 3799 hci_handle_read_encryption_key_size_complete(conn, 16); 3800 } 3801 } 3802 } 3803 #endif 3804 } else { 3805 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3806 } 3807 } else { 3808 uint8_t status = hci_event_encryption_change_get_status(packet); 3809 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3810 conn->bonding_flags &= ~BONDING_DEDICATED; 3811 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3812 conn->bonding_status = status; 3813 } 3814 } 3815 3816 break; 3817 3818 #ifdef ENABLE_CLASSIC 3819 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3820 handle = hci_event_authentication_complete_get_connection_handle(packet); 3821 conn = hci_connection_for_handle(handle); 3822 if (!conn) break; 3823 3824 // clear authentication active flag 3825 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3826 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3827 3828 // authenticated only if auth status == 0 3829 if (hci_event_authentication_complete_get_status(packet) == 0){ 3830 // authenticated 3831 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3832 3833 // If not already encrypted, start encryption 3834 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3835 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3836 break; 3837 } 3838 } 3839 3840 // emit updated security level 3841 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3842 break; 3843 3844 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3845 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3846 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3847 if (!conn) break; 3848 3849 // treat successfully paired connection as authenticated 3850 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3851 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3852 } 3853 3854 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3855 break; 3856 #endif 3857 3858 // HCI_EVENT_DISCONNECTION_COMPLETE 3859 // has been split, to first notify stack before shutting connection down 3860 // see end of function, too. 3861 case HCI_EVENT_DISCONNECTION_COMPLETE: 3862 if (packet[2]) break; // status != 0 3863 handle = little_endian_read_16(packet, 3); 3864 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3865 if (hci_stack->acl_fragmentation_total_size > 0u) { 3866 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3867 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3868 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3869 hci_stack->acl_fragmentation_total_size = 0; 3870 hci_stack->acl_fragmentation_pos = 0; 3871 if (release_buffer){ 3872 hci_release_packet_buffer(); 3873 } 3874 } 3875 } 3876 3877 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3878 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3879 if (hci_stack->iso_fragmentation_total_size > 0u) { 3880 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3881 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3882 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3883 hci_stack->iso_fragmentation_total_size = 0; 3884 hci_stack->iso_fragmentation_pos = 0; 3885 if (release_buffer){ 3886 hci_release_packet_buffer(); 3887 } 3888 } 3889 } 3890 3891 // finalize iso stream if handle matches 3892 iso_stream = hci_iso_stream_for_con_handle(handle); 3893 if (iso_stream != NULL){ 3894 hci_iso_stream_finalize(iso_stream); 3895 break; 3896 } 3897 #endif 3898 3899 conn = hci_connection_for_handle(handle); 3900 if (!conn) break; 3901 #ifdef ENABLE_CLASSIC 3902 // pairing failed if it was ongoing 3903 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3904 #endif 3905 3906 // emit dedicatd bonding event 3907 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3908 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3909 } 3910 3911 // mark connection for shutdown, stop timers, reset state 3912 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3913 hci_connection_stop_timer(conn); 3914 hci_connection_init(conn); 3915 3916 #ifdef ENABLE_BLE 3917 #ifdef ENABLE_LE_PERIPHERAL 3918 // re-enable advertisements for le connections if active 3919 if (hci_is_le_connection(conn)){ 3920 hci_update_advertisements_enabled_for_current_roles(); 3921 } 3922 #endif 3923 #endif 3924 break; 3925 3926 case HCI_EVENT_HARDWARE_ERROR: 3927 log_error("Hardware Error: 0x%02x", packet[2]); 3928 if (hci_stack->hardware_error_callback){ 3929 (*hci_stack->hardware_error_callback)(packet[2]); 3930 } else { 3931 // if no special requests, just reboot stack 3932 hci_power_control_off(); 3933 hci_power_control_on(); 3934 } 3935 break; 3936 3937 #ifdef ENABLE_CLASSIC 3938 case HCI_EVENT_ROLE_CHANGE: 3939 if (packet[2]) break; // status != 0 3940 reverse_bd_addr(&packet[3], addr); 3941 addr_type = BD_ADDR_TYPE_ACL; 3942 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3943 if (!conn) break; 3944 conn->role = packet[9]; 3945 break; 3946 #endif 3947 3948 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3949 // release packet buffer only for asynchronous transport and if there are not further fragments 3950 if (hci_transport_synchronous()) { 3951 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3952 return; // instead of break: to avoid re-entering hci_run() 3953 } 3954 hci_stack->acl_fragmentation_tx_active = 0; 3955 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3956 hci_stack->iso_fragmentation_tx_active = 0; 3957 if (hci_stack->iso_fragmentation_total_size) break; 3958 #endif 3959 if (hci_stack->acl_fragmentation_total_size) break; 3960 hci_release_packet_buffer(); 3961 3962 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3963 hci_iso_notify_can_send_now(); 3964 #endif 3965 // L2CAP receives this event via the hci_emit_event below 3966 3967 #ifdef ENABLE_CLASSIC 3968 // For SCO, we do the can_send_now_check here 3969 hci_notify_if_sco_can_send_now(); 3970 #endif 3971 break; 3972 3973 #ifdef ENABLE_CLASSIC 3974 case HCI_EVENT_SCO_CAN_SEND_NOW: 3975 // For SCO, we do the can_send_now_check here 3976 hci_stack->sco_can_send_now = true; 3977 hci_notify_if_sco_can_send_now(); 3978 return; 3979 3980 // explode inquriy results for easier consumption 3981 case HCI_EVENT_INQUIRY_RESULT: 3982 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 3983 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 3984 gap_inquiry_explode(packet, size); 3985 break; 3986 #endif 3987 3988 #ifdef ENABLE_BLE 3989 case HCI_EVENT_LE_META: 3990 switch (packet[2]){ 3991 #ifdef ENABLE_LE_CENTRAL 3992 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 3993 if (!hci_stack->le_scanning_enabled) break; 3994 le_handle_advertisement_report(packet, size); 3995 break; 3996 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3997 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 3998 if (!hci_stack->le_scanning_enabled) break; 3999 le_handle_extended_advertisement_report(packet, size); 4000 break; 4001 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4002 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4003 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4004 break; 4005 #endif 4006 #endif 4007 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4008 event_handle_le_connection_complete(packet); 4009 break; 4010 4011 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4012 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4013 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4014 conn = hci_connection_for_handle(handle); 4015 if (!conn) break; 4016 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4017 break; 4018 4019 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4020 // connection 4021 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4022 conn = hci_connection_for_handle(handle); 4023 if (conn) { 4024 // read arguments 4025 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4026 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4027 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4028 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4029 4030 // validate against current connection parameter range 4031 le_connection_parameter_range_t existing_range; 4032 gap_get_connection_parameter_range(&existing_range); 4033 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4034 if (update_parameter){ 4035 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4036 conn->le_conn_interval_min = le_conn_interval_min; 4037 conn->le_conn_interval_max = le_conn_interval_max; 4038 conn->le_conn_latency = le_conn_latency; 4039 conn->le_supervision_timeout = le_supervision_timeout; 4040 } else { 4041 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4042 } 4043 } 4044 break; 4045 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4046 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4047 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4048 conn = hci_connection_for_handle(handle); 4049 if (conn) { 4050 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4051 } 4052 break; 4053 #endif 4054 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4055 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4056 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4057 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4058 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4059 iso_stream = hci_iso_stream_for_con_handle(handle); 4060 btstack_assert(iso_stream != NULL); 4061 // track SDU 4062 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4063 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4064 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4065 // CIS Accept by Peripheral 4066 if (status == ERROR_CODE_SUCCESS){ 4067 if (iso_stream->max_sdu_p_to_c > 0){ 4068 // we're peripheral and we will send data 4069 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4070 } else { 4071 // we're peripheral and we will only receive data 4072 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4073 } 4074 } else { 4075 hci_iso_stream_finalize(iso_stream); 4076 hci_emit_cis_created(HCI_ISO_GROUP_ID_INVALID, handle, status); 4077 } 4078 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4079 } else { 4080 // CIG Setup by Central 4081 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4082 btstack_assert(cig != NULL); 4083 // update iso stream state 4084 if (status == ERROR_CODE_SUCCESS){ 4085 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4086 } else { 4087 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4088 } 4089 // update cig state 4090 uint8_t i; 4091 for (i=0;i<cig->num_cis;i++){ 4092 if (cig->cis_con_handles[i] == handle){ 4093 cig->cis_setup_active[i] = false; 4094 if (status == ERROR_CODE_SUCCESS){ 4095 cig->cis_setup_active[i] = false; 4096 cig->cis_established[i] = true; 4097 } else { 4098 hci_emit_cis_created(cig->cig_id, handle, status); 4099 } 4100 } 4101 } 4102 4103 // trigger iso path setup if complete 4104 bool setup_active = false; 4105 for (i=0;i<cig->num_cis;i++){ 4106 setup_active |= cig->cis_setup_active[i]; 4107 } 4108 if (setup_active == false){ 4109 cig->state_vars.next_cis = 0; 4110 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4111 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4112 } 4113 } 4114 } 4115 break; 4116 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4117 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4118 big = hci_big_for_handle(packet[4]); 4119 if (big != NULL){ 4120 uint8_t status = packet[3]; 4121 if (status == ERROR_CODE_SUCCESS){ 4122 // store bis_con_handles and trigger iso path setup 4123 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4124 uint8_t i; 4125 for (i=0;i<num_bis;i++){ 4126 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4127 big->bis_con_handles[i] = bis_handle; 4128 // assign bis handle 4129 btstack_linked_list_iterator_t it; 4130 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4131 while (btstack_linked_list_iterator_has_next(&it)){ 4132 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4133 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4134 (iso_stream->group_id == big->big_handle)){ 4135 iso_stream->con_handle = bis_handle; 4136 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4137 break; 4138 } 4139 } 4140 } 4141 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4142 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4143 big->state_vars.next_bis = 0; 4144 } 4145 } else { 4146 // create BIG failed or has been stopped by us 4147 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4148 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4149 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4150 hci_emit_big_created(big, status); 4151 } else { 4152 hci_emit_big_terminated(big); 4153 } 4154 } 4155 } 4156 break; 4157 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4158 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4159 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4160 if (big != NULL){ 4161 // finalize associated ISO streams 4162 btstack_linked_list_iterator_t it; 4163 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4164 while (btstack_linked_list_iterator_has_next(&it)){ 4165 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4166 if (iso_stream->group_id == big->big_handle){ 4167 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->con_handle); 4168 btstack_linked_list_iterator_remove(&it); 4169 btstack_memory_hci_iso_stream_free(iso_stream); 4170 } 4171 } 4172 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4173 switch (big->state){ 4174 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4175 hci_emit_big_created(big, big->state_vars.status); 4176 break; 4177 default: 4178 hci_emit_big_terminated(big); 4179 break; 4180 } 4181 } 4182 break; 4183 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4184 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4185 big_sync = hci_big_sync_for_handle(packet[4]); 4186 if (big_sync != NULL){ 4187 uint8_t status = packet[3]; 4188 uint8_t big_handle = packet[4]; 4189 if (status == ERROR_CODE_SUCCESS){ 4190 // store bis_con_handles and trigger iso path setup 4191 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4192 uint8_t i; 4193 for (i=0;i<num_bis;i++){ 4194 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4195 } 4196 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4197 // trigger iso path setup 4198 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4199 big_sync->state_vars.next_bis = 0; 4200 } 4201 } else { 4202 // create BIG Sync failed or has been stopped by us 4203 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4204 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4205 hci_emit_big_sync_created(big_sync, status); 4206 } else { 4207 hci_emit_big_sync_stopped(big_handle); 4208 } 4209 } 4210 } 4211 break; 4212 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4213 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4214 big_sync = hci_big_sync_for_handle(packet[4]); 4215 if (big_sync != NULL){ 4216 uint8_t big_handle = packet[4]; 4217 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4218 hci_emit_big_sync_stopped(big_handle); 4219 } 4220 break; 4221 #endif 4222 default: 4223 break; 4224 } 4225 break; 4226 #endif 4227 case HCI_EVENT_VENDOR_SPECIFIC: 4228 // Vendor specific commands often create vendor specific event instead of num completed packets 4229 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4230 switch (hci_stack->manufacturer){ 4231 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4232 hci_stack->num_cmd_packets = 1; 4233 break; 4234 default: 4235 break; 4236 } 4237 break; 4238 default: 4239 break; 4240 } 4241 4242 handle_event_for_current_stack_state(packet, size); 4243 4244 // notify upper stack 4245 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4246 4247 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4248 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4249 handle = little_endian_read_16(packet, 3); 4250 hci_connection_t * aConn = hci_connection_for_handle(handle); 4251 // discard connection if app did not trigger a reconnect in the event handler 4252 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4253 hci_shutdown_connection(aConn); 4254 } 4255 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4256 hci_controller_dump_packets(); 4257 #endif 4258 } 4259 4260 // execute main loop 4261 hci_run(); 4262 } 4263 4264 #ifdef ENABLE_CLASSIC 4265 4266 #ifdef ENABLE_SCO_OVER_HCI 4267 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4268 static void sco_schedule_tx(hci_connection_t * conn); 4269 4270 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4271 log_debug("SCO TX Timeout"); 4272 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4273 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4274 if (!conn) return; 4275 4276 // trigger send 4277 conn->sco_tx_ready = 1; 4278 // extra packet if CVSD but SCO buffer is too short 4279 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4280 conn->sco_tx_ready++; 4281 } 4282 hci_notify_if_sco_can_send_now(); 4283 } 4284 4285 4286 #define SCO_TX_AFTER_RX_MS (6) 4287 4288 static void sco_schedule_tx(hci_connection_t * conn){ 4289 4290 uint32_t now = btstack_run_loop_get_time_ms(); 4291 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4292 int time_delta_ms = sco_tx_ms - now; 4293 4294 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4295 4296 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4297 btstack_run_loop_remove_timer(timer); 4298 btstack_run_loop_set_timer(timer, time_delta_ms); 4299 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4300 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4301 btstack_run_loop_add_timer(timer); 4302 } 4303 #endif 4304 4305 static void sco_handler(uint8_t * packet, uint16_t size){ 4306 // lookup connection struct 4307 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4308 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4309 if (!conn) return; 4310 4311 #ifdef ENABLE_SCO_OVER_HCI 4312 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4313 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4314 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4315 packet[2] = 0x3c; 4316 memmove(&packet[3], &packet[23], 63); 4317 size = 63; 4318 } 4319 } 4320 4321 if (hci_have_usb_transport()){ 4322 // Nothing to do 4323 } else { 4324 // 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); 4325 if (hci_stack->synchronous_flow_control_enabled == 0){ 4326 uint32_t now = btstack_run_loop_get_time_ms(); 4327 4328 if (!conn->sco_rx_valid){ 4329 // ignore first 10 packets 4330 conn->sco_rx_count++; 4331 // log_debug("sco rx count %u", conn->sco_rx_count); 4332 if (conn->sco_rx_count == 10) { 4333 // use first timestamp as is and pretent it just started 4334 conn->sco_rx_ms = now; 4335 conn->sco_rx_valid = 1; 4336 conn->sco_rx_count = 0; 4337 sco_schedule_tx(conn); 4338 } 4339 } else { 4340 // track expected arrival timme 4341 conn->sco_rx_count++; 4342 conn->sco_rx_ms += 7; 4343 int delta = (int32_t) (now - conn->sco_rx_ms); 4344 if (delta > 0){ 4345 conn->sco_rx_ms++; 4346 } 4347 // log_debug("sco rx %u", conn->sco_rx_ms); 4348 sco_schedule_tx(conn); 4349 } 4350 } 4351 } 4352 #endif 4353 4354 // deliver to app 4355 if (hci_stack->sco_packet_handler) { 4356 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4357 } 4358 4359 #ifdef HAVE_SCO_TRANSPORT 4360 // We can send one packet for each received packet 4361 conn->sco_tx_ready++; 4362 hci_notify_if_sco_can_send_now(); 4363 #endif 4364 4365 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4366 conn->num_packets_completed++; 4367 hci_stack->host_completed_packets = 1; 4368 hci_run(); 4369 #endif 4370 } 4371 #endif 4372 4373 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4374 hci_dump_packet(packet_type, 1, packet, size); 4375 switch (packet_type) { 4376 case HCI_EVENT_PACKET: 4377 event_handler(packet, size); 4378 break; 4379 case HCI_ACL_DATA_PACKET: 4380 acl_handler(packet, size); 4381 break; 4382 #ifdef ENABLE_CLASSIC 4383 case HCI_SCO_DATA_PACKET: 4384 sco_handler(packet, size); 4385 break; 4386 #endif 4387 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4388 case HCI_ISO_DATA_PACKET: 4389 hci_iso_packet_handler(packet, size); 4390 break; 4391 #endif 4392 default: 4393 break; 4394 } 4395 } 4396 4397 /** 4398 * @brief Add event packet handler. 4399 */ 4400 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4401 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4402 } 4403 4404 /** 4405 * @brief Remove event packet handler. 4406 */ 4407 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4408 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4409 } 4410 4411 /** Register HCI packet handlers */ 4412 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4413 hci_stack->acl_packet_handler = handler; 4414 } 4415 4416 #ifdef ENABLE_CLASSIC 4417 /** 4418 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4419 */ 4420 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4421 hci_stack->sco_packet_handler = handler; 4422 } 4423 #endif 4424 4425 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4426 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4427 hci_stack->iso_packet_handler = handler; 4428 } 4429 #endif 4430 4431 static void hci_state_reset(void){ 4432 // no connections yet 4433 hci_stack->connections = NULL; 4434 4435 // keep discoverable/connectable as this has been requested by the client(s) 4436 // hci_stack->discoverable = 0; 4437 // hci_stack->connectable = 0; 4438 // hci_stack->bondable = 1; 4439 // hci_stack->own_addr_type = 0; 4440 4441 // buffer is free 4442 hci_stack->hci_packet_buffer_reserved = false; 4443 4444 // no pending cmds 4445 hci_stack->decline_reason = 0; 4446 4447 hci_stack->secure_connections_active = false; 4448 4449 #ifdef ENABLE_CLASSIC 4450 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4451 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4452 4453 hci_stack->gap_tasks_classic = 4454 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4455 GAP_TASK_SET_CLASS_OF_DEVICE | 4456 GAP_TASK_SET_LOCAL_NAME | 4457 GAP_TASK_SET_EIR_DATA | 4458 GAP_TASK_WRITE_SCAN_ENABLE | 4459 GAP_TASK_WRITE_PAGE_TIMEOUT; 4460 #endif 4461 4462 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4463 hci_stack->classic_read_local_oob_data = false; 4464 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4465 #endif 4466 4467 // LE 4468 #ifdef ENABLE_BLE 4469 memset(hci_stack->le_random_address, 0, 6); 4470 hci_stack->le_random_address_set = 0; 4471 #endif 4472 #ifdef ENABLE_LE_CENTRAL 4473 hci_stack->le_scanning_active = false; 4474 hci_stack->le_scanning_param_update = true; 4475 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4476 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4477 hci_stack->le_whitelist_capacity = 0; 4478 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4479 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4480 #endif 4481 #endif 4482 #ifdef ENABLE_LE_PERIPHERAL 4483 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4484 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4485 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4486 } 4487 if (hci_stack->le_advertisements_data != NULL){ 4488 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4489 } 4490 #endif 4491 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4492 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4493 #endif 4494 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4495 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4496 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4497 #endif 4498 } 4499 4500 #ifdef ENABLE_CLASSIC 4501 /** 4502 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4503 */ 4504 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4505 // store and open remote device db 4506 hci_stack->link_key_db = link_key_db; 4507 if (hci_stack->link_key_db) { 4508 hci_stack->link_key_db->open(); 4509 } 4510 } 4511 #endif 4512 4513 void hci_init(const hci_transport_t *transport, const void *config){ 4514 4515 #ifdef HAVE_MALLOC 4516 if (!hci_stack) { 4517 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4518 } 4519 #else 4520 hci_stack = &hci_stack_static; 4521 #endif 4522 memset(hci_stack, 0, sizeof(hci_stack_t)); 4523 4524 // reference to use transport layer implementation 4525 hci_stack->hci_transport = transport; 4526 4527 // reference to used config 4528 hci_stack->config = config; 4529 4530 // setup pointer for outgoing packet buffer 4531 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4532 4533 // max acl payload size defined in config.h 4534 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4535 4536 // register packet handlers with transport 4537 transport->register_packet_handler(&packet_handler); 4538 4539 hci_stack->state = HCI_STATE_OFF; 4540 4541 // class of device 4542 hci_stack->class_of_device = 0x007a020c; // Smartphone 4543 4544 // bondable by default 4545 hci_stack->bondable = 1; 4546 4547 #ifdef ENABLE_CLASSIC 4548 // classic name 4549 hci_stack->local_name = default_classic_name; 4550 4551 // Master slave policy 4552 hci_stack->master_slave_policy = 1; 4553 4554 // Allow Role Switch 4555 hci_stack->allow_role_switch = 1; 4556 4557 // Default / minimum security level = 2 4558 hci_stack->gap_security_level = LEVEL_2; 4559 4560 // Default Security Mode 4 4561 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4562 4563 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4564 hci_stack->gap_required_encyrption_key_size = 7; 4565 4566 // Link Supervision Timeout 4567 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4568 4569 #endif 4570 4571 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4572 hci_stack->ssp_enable = 1; 4573 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4574 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4575 hci_stack->ssp_auto_accept = 1; 4576 4577 // Secure Connections: enable (requires support from Controller) 4578 hci_stack->secure_connections_enable = true; 4579 4580 // voice setting - signed 16 bit pcm data with CVSD over the air 4581 hci_stack->sco_voice_setting = 0x60; 4582 4583 #ifdef ENABLE_LE_CENTRAL 4584 // connection parameter to use for outgoing connections 4585 hci_stack->le_connection_scan_interval = 0x0060; // 60ms 4586 hci_stack->le_connection_scan_window = 0x0030; // 30ms 4587 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4588 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4589 hci_stack->le_connection_latency = 4; // 4 4590 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4591 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 4592 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 4593 4594 // default LE Scanning 4595 hci_stack->le_scan_type = 0x1; // active 4596 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4597 hci_stack->le_scan_window = 0x30; // 30 ms 4598 #endif 4599 4600 #ifdef ENABLE_LE_PERIPHERAL 4601 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4602 #endif 4603 4604 // connection parameter range used to answer connection parameter update requests in l2cap 4605 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4606 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4607 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4608 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4609 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4610 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4611 4612 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4613 hci_stack->iso_packets_to_queue = 1; 4614 #endif 4615 4616 hci_state_reset(); 4617 } 4618 4619 void hci_deinit(void){ 4620 btstack_run_loop_remove_timer(&hci_stack->timeout); 4621 #ifdef HAVE_MALLOC 4622 if (hci_stack) { 4623 free(hci_stack); 4624 } 4625 #endif 4626 hci_stack = NULL; 4627 4628 #ifdef ENABLE_CLASSIC 4629 disable_l2cap_timeouts = 0; 4630 #endif 4631 } 4632 4633 /** 4634 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4635 */ 4636 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4637 hci_stack->chipset = chipset_driver; 4638 4639 // reset chipset driver - init is also called on power_up 4640 if (hci_stack->chipset && hci_stack->chipset->init){ 4641 hci_stack->chipset->init(hci_stack->config); 4642 } 4643 } 4644 4645 /** 4646 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4647 */ 4648 void hci_set_control(const btstack_control_t *hardware_control){ 4649 // references to used control implementation 4650 hci_stack->control = hardware_control; 4651 // init with transport config 4652 hardware_control->init(hci_stack->config); 4653 } 4654 4655 static void hci_discard_connections(void){ 4656 btstack_linked_list_iterator_t it; 4657 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4658 while (btstack_linked_list_iterator_has_next(&it)){ 4659 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4660 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4661 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4662 hci_shutdown_connection(connection); 4663 } 4664 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4665 while (hci_stack->iso_streams != NULL){ 4666 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4667 } 4668 #endif 4669 } 4670 4671 void hci_close(void){ 4672 4673 #ifdef ENABLE_CLASSIC 4674 // close remote device db 4675 if (hci_stack->link_key_db) { 4676 hci_stack->link_key_db->close(); 4677 } 4678 #endif 4679 4680 hci_discard_connections(); 4681 4682 hci_power_control(HCI_POWER_OFF); 4683 4684 #ifdef HAVE_MALLOC 4685 free(hci_stack); 4686 #endif 4687 hci_stack = NULL; 4688 } 4689 4690 #ifdef HAVE_SCO_TRANSPORT 4691 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4692 hci_stack->sco_transport = sco_transport; 4693 sco_transport->register_packet_handler(&packet_handler); 4694 } 4695 #endif 4696 4697 #ifdef ENABLE_CLASSIC 4698 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4699 // validate ranage and set 4700 if (encryption_key_size < 7) return; 4701 if (encryption_key_size > 16) return; 4702 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4703 } 4704 4705 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4706 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4707 hci_stack->gap_security_mode = security_mode; 4708 return ERROR_CODE_SUCCESS; 4709 } else { 4710 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4711 } 4712 } 4713 4714 gap_security_mode_t gap_get_security_mode(void){ 4715 return hci_stack->gap_security_mode; 4716 } 4717 4718 void gap_set_security_level(gap_security_level_t security_level){ 4719 hci_stack->gap_security_level = security_level; 4720 } 4721 4722 gap_security_level_t gap_get_security_level(void){ 4723 if (hci_stack->gap_secure_connections_only_mode){ 4724 return LEVEL_4; 4725 } 4726 return hci_stack->gap_security_level; 4727 } 4728 4729 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4730 hci_stack->gap_minimal_service_security_level = security_level; 4731 } 4732 4733 void gap_set_secure_connections_only_mode(bool enable){ 4734 hci_stack->gap_secure_connections_only_mode = enable; 4735 } 4736 4737 bool gap_get_secure_connections_only_mode(void){ 4738 return hci_stack->gap_secure_connections_only_mode; 4739 } 4740 #endif 4741 4742 #ifdef ENABLE_CLASSIC 4743 void gap_set_class_of_device(uint32_t class_of_device){ 4744 hci_stack->class_of_device = class_of_device; 4745 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4746 hci_run(); 4747 } 4748 4749 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4750 hci_stack->default_link_policy_settings = default_link_policy_settings; 4751 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4752 hci_run(); 4753 } 4754 4755 void gap_set_allow_role_switch(bool allow_role_switch){ 4756 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4757 } 4758 4759 uint8_t hci_get_allow_role_switch(void){ 4760 return hci_stack->allow_role_switch; 4761 } 4762 4763 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4764 hci_stack->link_supervision_timeout = link_supervision_timeout; 4765 } 4766 4767 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4768 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4769 } 4770 4771 uint16_t hci_automatic_flush_timeout(void){ 4772 return hci_stack->automatic_flush_timeout; 4773 } 4774 4775 void hci_disable_l2cap_timeout_check(void){ 4776 disable_l2cap_timeouts = 1; 4777 } 4778 #endif 4779 4780 #ifndef HAVE_HOST_CONTROLLER_API 4781 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4782 void hci_set_bd_addr(bd_addr_t addr){ 4783 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4784 hci_stack->custom_bd_addr_set = 1; 4785 } 4786 #endif 4787 4788 // State-Module-Driver overview 4789 // state module low-level 4790 // HCI_STATE_OFF off close 4791 // HCI_STATE_INITIALIZING, on open 4792 // HCI_STATE_WORKING, on open 4793 // HCI_STATE_HALTING, on open 4794 // HCI_STATE_SLEEPING, off/sleep close 4795 // HCI_STATE_FALLING_ASLEEP on open 4796 4797 static int hci_power_control_on(void){ 4798 4799 // power on 4800 int err = 0; 4801 if (hci_stack->control && hci_stack->control->on){ 4802 err = (*hci_stack->control->on)(); 4803 } 4804 if (err){ 4805 log_error( "POWER_ON failed"); 4806 hci_emit_hci_open_failed(); 4807 return err; 4808 } 4809 4810 // int chipset driver 4811 if (hci_stack->chipset && hci_stack->chipset->init){ 4812 hci_stack->chipset->init(hci_stack->config); 4813 } 4814 4815 // init transport 4816 if (hci_stack->hci_transport->init){ 4817 hci_stack->hci_transport->init(hci_stack->config); 4818 } 4819 4820 // open transport 4821 err = hci_stack->hci_transport->open(); 4822 if (err){ 4823 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4824 if (hci_stack->control && hci_stack->control->off){ 4825 (*hci_stack->control->off)(); 4826 } 4827 hci_emit_hci_open_failed(); 4828 return err; 4829 } 4830 return 0; 4831 } 4832 4833 static void hci_power_control_off(void){ 4834 4835 log_info("hci_power_control_off"); 4836 4837 // close low-level device 4838 hci_stack->hci_transport->close(); 4839 4840 log_info("hci_power_control_off - hci_transport closed"); 4841 4842 // power off 4843 if (hci_stack->control && hci_stack->control->off){ 4844 (*hci_stack->control->off)(); 4845 } 4846 4847 log_info("hci_power_control_off - control closed"); 4848 4849 hci_stack->state = HCI_STATE_OFF; 4850 } 4851 4852 static void hci_power_control_sleep(void){ 4853 4854 log_info("hci_power_control_sleep"); 4855 4856 #if 0 4857 // don't close serial port during sleep 4858 4859 // close low-level device 4860 hci_stack->hci_transport->close(hci_stack->config); 4861 #endif 4862 4863 // sleep mode 4864 if (hci_stack->control && hci_stack->control->sleep){ 4865 (*hci_stack->control->sleep)(); 4866 } 4867 4868 hci_stack->state = HCI_STATE_SLEEPING; 4869 } 4870 4871 static int hci_power_control_wake(void){ 4872 4873 log_info("hci_power_control_wake"); 4874 4875 // wake on 4876 if (hci_stack->control && hci_stack->control->wake){ 4877 (*hci_stack->control->wake)(); 4878 } 4879 4880 #if 0 4881 // open low-level device 4882 int err = hci_stack->hci_transport->open(hci_stack->config); 4883 if (err){ 4884 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4885 if (hci_stack->control && hci_stack->control->off){ 4886 (*hci_stack->control->off)(); 4887 } 4888 hci_emit_hci_open_failed(); 4889 return err; 4890 } 4891 #endif 4892 4893 return 0; 4894 } 4895 4896 static void hci_power_enter_initializing_state(void){ 4897 // set up state machine 4898 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4899 hci_stack->hci_packet_buffer_reserved = false; 4900 hci_stack->state = HCI_STATE_INITIALIZING; 4901 hci_stack->substate = HCI_INIT_SEND_RESET; 4902 } 4903 4904 static void hci_power_enter_halting_state(void){ 4905 #ifdef ENABLE_BLE 4906 // drop entries scheduled for removal, mark others for re-adding 4907 btstack_linked_list_iterator_t it; 4908 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 4909 while (btstack_linked_list_iterator_has_next(&it)){ 4910 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 4911 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 4912 btstack_linked_list_iterator_remove(&it); 4913 btstack_memory_whitelist_entry_free(entry); 4914 } else { 4915 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 4916 } 4917 } 4918 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4919 hci_periodic_advertiser_list_free(); 4920 #endif 4921 #endif 4922 // see hci_run 4923 hci_stack->state = HCI_STATE_HALTING; 4924 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4925 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4926 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4927 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4928 btstack_run_loop_add_timer(&hci_stack->timeout); 4929 } 4930 4931 // returns error 4932 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4933 int err; 4934 switch (power_mode){ 4935 case HCI_POWER_ON: 4936 err = hci_power_control_on(); 4937 if (err != 0) { 4938 log_error("hci_power_control_on() error %d", err); 4939 return err; 4940 } 4941 hci_power_enter_initializing_state(); 4942 break; 4943 case HCI_POWER_OFF: 4944 // do nothing 4945 break; 4946 case HCI_POWER_SLEEP: 4947 // do nothing (with SLEEP == OFF) 4948 break; 4949 default: 4950 btstack_assert(false); 4951 break; 4952 } 4953 return ERROR_CODE_SUCCESS; 4954 } 4955 4956 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 4957 switch (power_mode){ 4958 case HCI_POWER_ON: 4959 // do nothing 4960 break; 4961 case HCI_POWER_OFF: 4962 // no connections yet, just turn it off 4963 hci_power_control_off(); 4964 break; 4965 case HCI_POWER_SLEEP: 4966 // no connections yet, just turn it off 4967 hci_power_control_sleep(); 4968 break; 4969 default: 4970 btstack_assert(false); 4971 break; 4972 } 4973 return ERROR_CODE_SUCCESS; 4974 } 4975 4976 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 4977 switch (power_mode){ 4978 case HCI_POWER_ON: 4979 // do nothing 4980 break; 4981 case HCI_POWER_OFF: 4982 hci_power_enter_halting_state(); 4983 break; 4984 case HCI_POWER_SLEEP: 4985 // see hci_run 4986 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4987 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4988 break; 4989 default: 4990 btstack_assert(false); 4991 break; 4992 } 4993 return ERROR_CODE_SUCCESS; 4994 } 4995 4996 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 4997 switch (power_mode){ 4998 case HCI_POWER_ON: 4999 hci_power_enter_initializing_state(); 5000 break; 5001 case HCI_POWER_OFF: 5002 // do nothing 5003 break; 5004 case HCI_POWER_SLEEP: 5005 // see hci_run 5006 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5007 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5008 break; 5009 default: 5010 btstack_assert(false); 5011 break; 5012 } 5013 return ERROR_CODE_SUCCESS; 5014 } 5015 5016 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5017 switch (power_mode){ 5018 case HCI_POWER_ON: 5019 hci_power_enter_initializing_state(); 5020 break; 5021 case HCI_POWER_OFF: 5022 hci_power_enter_halting_state(); 5023 break; 5024 case HCI_POWER_SLEEP: 5025 // do nothing 5026 break; 5027 default: 5028 btstack_assert(false); 5029 break; 5030 } 5031 return ERROR_CODE_SUCCESS; 5032 } 5033 5034 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5035 int err; 5036 switch (power_mode){ 5037 case HCI_POWER_ON: 5038 err = hci_power_control_wake(); 5039 if (err) return err; 5040 hci_power_enter_initializing_state(); 5041 break; 5042 case HCI_POWER_OFF: 5043 hci_power_enter_halting_state(); 5044 break; 5045 case HCI_POWER_SLEEP: 5046 // do nothing 5047 break; 5048 default: 5049 btstack_assert(false); 5050 break; 5051 } 5052 return ERROR_CODE_SUCCESS; 5053 } 5054 5055 int hci_power_control(HCI_POWER_MODE power_mode){ 5056 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5057 btstack_run_loop_remove_timer(&hci_stack->timeout); 5058 int err = 0; 5059 switch (hci_stack->state){ 5060 case HCI_STATE_OFF: 5061 err = hci_power_control_state_off(power_mode); 5062 break; 5063 case HCI_STATE_INITIALIZING: 5064 err = hci_power_control_state_initializing(power_mode); 5065 break; 5066 case HCI_STATE_WORKING: 5067 err = hci_power_control_state_working(power_mode); 5068 break; 5069 case HCI_STATE_HALTING: 5070 err = hci_power_control_state_halting(power_mode); 5071 break; 5072 case HCI_STATE_FALLING_ASLEEP: 5073 err = hci_power_control_state_falling_asleep(power_mode); 5074 break; 5075 case HCI_STATE_SLEEPING: 5076 err = hci_power_control_state_sleeping(power_mode); 5077 break; 5078 default: 5079 btstack_assert(false); 5080 break; 5081 } 5082 if (err != 0){ 5083 return err; 5084 } 5085 5086 // create internal event 5087 hci_emit_state(); 5088 5089 // trigger next/first action 5090 hci_run(); 5091 5092 return 0; 5093 } 5094 5095 5096 static void hci_halting_run(void) { 5097 5098 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5099 5100 hci_connection_t *connection; 5101 #ifdef ENABLE_BLE 5102 #ifdef ENABLE_LE_PERIPHERAL 5103 bool stop_advertismenets; 5104 #endif 5105 #endif 5106 5107 switch (hci_stack->substate) { 5108 case HCI_HALTING_CLASSIC_STOP: 5109 #ifdef ENABLE_CLASSIC 5110 if (!hci_can_send_command_packet_now()) return; 5111 5112 if (hci_stack->connectable || hci_stack->discoverable){ 5113 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5114 hci_send_cmd(&hci_write_scan_enable, 0); 5115 return; 5116 } 5117 #endif 5118 /* fall through */ 5119 5120 case HCI_HALTING_LE_ADV_STOP: 5121 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5122 5123 #ifdef ENABLE_BLE 5124 #ifdef ENABLE_LE_PERIPHERAL 5125 if (!hci_can_send_command_packet_now()) return; 5126 5127 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5128 5129 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5130 if (hci_extended_advertising_supported()){ 5131 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5132 btstack_linked_list_iterator_t it; 5133 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5134 // stop all periodic advertisements and check if an extended set is active 5135 while (btstack_linked_list_iterator_has_next(&it)){ 5136 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5137 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5138 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5139 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5140 return; 5141 } 5142 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5143 stop_advertismenets = true; 5144 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5145 } 5146 } 5147 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5148 if (stop_advertismenets){ 5149 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5150 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5151 return; 5152 } 5153 } 5154 else 5155 #else /* ENABLE_LE_PERIPHERAL */ 5156 { 5157 if (stop_advertismenets) { 5158 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5159 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5160 return; 5161 } 5162 } 5163 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5164 #endif /* ENABLE_LE_PERIPHERAL */ 5165 #endif /* ENABLE_BLE */ 5166 5167 /* fall through */ 5168 5169 case HCI_HALTING_LE_SCAN_STOP: 5170 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5171 if (!hci_can_send_command_packet_now()) return; 5172 5173 #ifdef ENABLE_BLE 5174 #ifdef ENABLE_LE_CENTRAL 5175 if (hci_stack->le_scanning_active){ 5176 hci_le_scan_stop(); 5177 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5178 return; 5179 } 5180 #endif 5181 #endif 5182 5183 /* fall through */ 5184 5185 case HCI_HALTING_DISCONNECT_ALL: 5186 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5187 if (!hci_can_send_command_packet_now()) return; 5188 5189 // close all open connections 5190 connection = (hci_connection_t *) hci_stack->connections; 5191 if (connection) { 5192 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5193 5194 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5195 5196 // check state 5197 switch(connection->state) { 5198 case SENT_DISCONNECT: 5199 case RECEIVED_DISCONNECTION_COMPLETE: 5200 // wait until connection is gone 5201 return; 5202 default: 5203 break; 5204 } 5205 5206 // finally, send the disconnect command 5207 connection->state = SENT_DISCONNECT; 5208 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5209 return; 5210 } 5211 5212 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5213 // stop BIGs and BIG Syncs 5214 if (hci_stack->le_audio_bigs != NULL){ 5215 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5216 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5217 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5218 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5219 return; 5220 } 5221 if (hci_stack->le_audio_big_syncs != NULL){ 5222 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5223 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5224 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5225 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5226 return; 5227 } 5228 #endif 5229 5230 btstack_run_loop_remove_timer(&hci_stack->timeout); 5231 5232 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5233 log_info("HCI_STATE_HALTING: wait 50 ms"); 5234 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5235 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5236 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5237 btstack_run_loop_add_timer(&hci_stack->timeout); 5238 break; 5239 5240 case HCI_HALTING_CLOSE: 5241 // close left over connections (that had not been properly closed before) 5242 hci_discard_connections(); 5243 5244 log_info("HCI_STATE_HALTING, calling off"); 5245 5246 // switch mode 5247 hci_power_control_off(); 5248 5249 log_info("HCI_STATE_HALTING, emitting state"); 5250 hci_emit_state(); 5251 log_info("HCI_STATE_HALTING, done"); 5252 break; 5253 5254 case HCI_HALTING_W4_CLOSE_TIMER: 5255 // keep waiting 5256 5257 break; 5258 default: 5259 break; 5260 } 5261 }; 5262 5263 static void hci_falling_asleep_run(void){ 5264 hci_connection_t * connection; 5265 switch(hci_stack->substate) { 5266 case HCI_FALLING_ASLEEP_DISCONNECT: 5267 log_info("HCI_STATE_FALLING_ASLEEP"); 5268 // close all open connections 5269 connection = (hci_connection_t *) hci_stack->connections; 5270 if (connection){ 5271 5272 // send disconnect 5273 if (!hci_can_send_command_packet_now()) return; 5274 5275 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5276 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5277 5278 // send disconnected event right away - causes higher layer connections to get closed, too. 5279 hci_shutdown_connection(connection); 5280 return; 5281 } 5282 5283 if (hci_classic_supported()){ 5284 // disable page and inquiry scan 5285 if (!hci_can_send_command_packet_now()) return; 5286 5287 log_info("HCI_STATE_HALTING, disabling inq scans"); 5288 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5289 5290 // continue in next sub state 5291 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5292 break; 5293 } 5294 5295 /* fall through */ 5296 5297 case HCI_FALLING_ASLEEP_COMPLETE: 5298 log_info("HCI_STATE_HALTING, calling sleep"); 5299 // switch mode 5300 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5301 hci_emit_state(); 5302 break; 5303 5304 default: 5305 break; 5306 } 5307 } 5308 5309 #ifdef ENABLE_CLASSIC 5310 5311 static void hci_update_scan_enable(void){ 5312 // 2 = page scan, 1 = inq scan 5313 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5314 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5315 hci_run(); 5316 } 5317 5318 void gap_discoverable_control(uint8_t enable){ 5319 if (enable) enable = 1; // normalize argument 5320 5321 if (hci_stack->discoverable == enable){ 5322 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5323 return; 5324 } 5325 5326 hci_stack->discoverable = enable; 5327 hci_update_scan_enable(); 5328 } 5329 5330 void gap_connectable_control(uint8_t enable){ 5331 if (enable) enable = 1; // normalize argument 5332 5333 // don't emit event 5334 if (hci_stack->connectable == enable) return; 5335 5336 hci_stack->connectable = enable; 5337 hci_update_scan_enable(); 5338 } 5339 #endif 5340 5341 void gap_local_bd_addr(bd_addr_t address_buffer){ 5342 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5343 } 5344 5345 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5346 static void hci_host_num_completed_packets(void){ 5347 5348 // create packet manually as arrays are not supported and num_commands should not get reduced 5349 hci_reserve_packet_buffer(); 5350 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5351 5352 uint16_t size = 0; 5353 uint16_t num_handles = 0; 5354 packet[size++] = 0x35; 5355 packet[size++] = 0x0c; 5356 size++; // skip param len 5357 size++; // skip num handles 5358 5359 // add { handle, packets } entries 5360 btstack_linked_item_t * it; 5361 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5362 hci_connection_t * connection = (hci_connection_t *) it; 5363 if (connection->num_packets_completed){ 5364 little_endian_store_16(packet, size, connection->con_handle); 5365 size += 2; 5366 little_endian_store_16(packet, size, connection->num_packets_completed); 5367 size += 2; 5368 // 5369 num_handles++; 5370 connection->num_packets_completed = 0; 5371 } 5372 } 5373 5374 packet[2] = size - 3; 5375 packet[3] = num_handles; 5376 5377 hci_stack->host_completed_packets = 0; 5378 5379 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5380 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5381 5382 // release packet buffer for synchronous transport implementations 5383 if (hci_transport_synchronous()){ 5384 hci_release_packet_buffer(); 5385 hci_emit_transport_packet_sent(); 5386 } 5387 } 5388 #endif 5389 5390 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5391 UNUSED(ds); 5392 hci_stack->substate = HCI_HALTING_CLOSE; 5393 hci_halting_run(); 5394 } 5395 5396 static bool hci_run_acl_fragments(void){ 5397 if (hci_stack->acl_fragmentation_total_size > 0u) { 5398 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5399 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5400 if (connection) { 5401 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5402 hci_send_acl_packet_fragments(connection); 5403 return true; 5404 } 5405 } else { 5406 // connection gone -> discard further fragments 5407 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5408 hci_stack->acl_fragmentation_total_size = 0; 5409 hci_stack->acl_fragmentation_pos = 0; 5410 } 5411 } 5412 return false; 5413 } 5414 5415 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5416 static bool hci_run_iso_fragments(void){ 5417 if (hci_stack->iso_fragmentation_total_size > 0u) { 5418 // TODO: flow control 5419 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5420 hci_send_iso_packet_fragments(); 5421 return true; 5422 } 5423 } 5424 return false; 5425 } 5426 #endif 5427 5428 #ifdef ENABLE_CLASSIC 5429 5430 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5431 static bool hci_classic_operation_active(void) { 5432 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5433 return true; 5434 } 5435 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5436 return true; 5437 } 5438 btstack_linked_item_t * it; 5439 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5440 hci_connection_t *connection = (hci_connection_t *) it; 5441 switch (connection->state) { 5442 case SENT_CREATE_CONNECTION: 5443 case SENT_CANCEL_CONNECTION: 5444 case SENT_DISCONNECT: 5445 return true; 5446 default: 5447 break; 5448 } 5449 } 5450 return false; 5451 } 5452 #endif 5453 5454 static bool hci_run_general_gap_classic(void){ 5455 5456 // assert stack is working and classic is active 5457 if (hci_classic_supported() == false) return false; 5458 if (hci_stack->state != HCI_STATE_WORKING) return false; 5459 5460 // decline incoming connections 5461 if (hci_stack->decline_reason){ 5462 uint8_t reason = hci_stack->decline_reason; 5463 hci_stack->decline_reason = 0; 5464 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5465 return true; 5466 } 5467 5468 if (hci_stack->gap_tasks_classic != 0){ 5469 hci_run_gap_tasks_classic(); 5470 return true; 5471 } 5472 5473 // start/stop inquiry 5474 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5475 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5476 if (hci_classic_operation_active() == false) 5477 #endif 5478 { 5479 uint8_t duration = hci_stack->inquiry_state; 5480 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5481 if (hci_stack->inquiry_max_period_length != 0){ 5482 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); 5483 } else { 5484 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5485 } 5486 return true; 5487 } 5488 } 5489 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5490 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5491 hci_send_cmd(&hci_inquiry_cancel); 5492 return true; 5493 } 5494 5495 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5496 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5497 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5498 return true; 5499 } 5500 5501 // remote name request 5502 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5503 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5504 if (hci_classic_operation_active() == false) 5505 #endif 5506 { 5507 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5508 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5509 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5510 return true; 5511 } 5512 } 5513 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5514 // Local OOB data 5515 if (hci_stack->classic_read_local_oob_data){ 5516 hci_stack->classic_read_local_oob_data = false; 5517 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5518 hci_send_cmd(&hci_read_local_extended_oob_data); 5519 } else { 5520 hci_send_cmd(&hci_read_local_oob_data); 5521 } 5522 } 5523 #endif 5524 // pairing 5525 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5526 uint8_t state = hci_stack->gap_pairing_state; 5527 uint8_t pin_code[16]; 5528 switch (state){ 5529 case GAP_PAIRING_STATE_SEND_PIN: 5530 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5531 memset(pin_code, 0, 16); 5532 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5533 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5534 break; 5535 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5536 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5537 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5538 break; 5539 case GAP_PAIRING_STATE_SEND_PASSKEY: 5540 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5541 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5542 break; 5543 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5544 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5545 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5546 break; 5547 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5548 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5549 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5550 break; 5551 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5552 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5553 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5554 break; 5555 default: 5556 break; 5557 } 5558 return true; 5559 } 5560 return false; 5561 } 5562 #endif 5563 5564 #ifdef ENABLE_BLE 5565 5566 #ifdef ENABLE_LE_CENTRAL 5567 static void hci_le_scan_stop(void){ 5568 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5569 if (hci_extended_advertising_supported()) { 5570 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5571 } else 5572 #endif 5573 { 5574 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5575 } 5576 } 5577 #endif 5578 5579 #ifdef ENABLE_LE_PERIPHERAL 5580 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5581 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5582 uint8_t operation = 0; 5583 if (pos == 0){ 5584 // first fragment or complete data 5585 operation |= 1; 5586 } 5587 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5588 // last fragment or complete data 5589 operation |= 2; 5590 } 5591 return operation; 5592 } 5593 #endif 5594 #endif 5595 5596 static bool hci_run_general_gap_le(void){ 5597 5598 btstack_linked_list_iterator_t lit; 5599 5600 // Phase 1: collect what to stop 5601 5602 #ifdef ENABLE_LE_CENTRAL 5603 bool scanning_stop = false; 5604 bool connecting_stop = false; 5605 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5606 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5607 bool periodic_sync_stop = false; 5608 #endif 5609 #endif 5610 #endif 5611 5612 #ifdef ENABLE_LE_PERIPHERAL 5613 bool advertising_stop = false; 5614 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5615 le_advertising_set_t * advertising_stop_set = NULL; 5616 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5617 bool periodic_advertising_stop = false; 5618 #endif 5619 #endif 5620 #endif 5621 5622 // check if own address changes 5623 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5624 5625 // check if whitelist needs modification 5626 bool whitelist_modification_pending = false; 5627 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5628 while (btstack_linked_list_iterator_has_next(&lit)){ 5629 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5630 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5631 whitelist_modification_pending = true; 5632 break; 5633 } 5634 } 5635 5636 // check if resolving list needs modification 5637 bool resolving_list_modification_pending = false; 5638 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5639 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5640 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5641 resolving_list_modification_pending = true; 5642 } 5643 #endif 5644 5645 #ifdef ENABLE_LE_CENTRAL 5646 5647 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5648 // check if periodic advertiser list needs modification 5649 bool periodic_list_modification_pending = false; 5650 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5651 while (btstack_linked_list_iterator_has_next(&lit)){ 5652 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5653 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5654 periodic_list_modification_pending = true; 5655 break; 5656 } 5657 } 5658 #endif 5659 5660 // scanning control 5661 if (hci_stack->le_scanning_active) { 5662 // stop if: 5663 // - parameter change required 5664 // - it's disabled 5665 // - whitelist change required but used for scanning 5666 // - resolving list modified 5667 // - own address changes 5668 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5669 if ((hci_stack->le_scanning_param_update) || 5670 !hci_stack->le_scanning_enabled || 5671 (scanning_uses_whitelist && whitelist_modification_pending) || 5672 resolving_list_modification_pending || 5673 random_address_change){ 5674 5675 scanning_stop = true; 5676 } 5677 } 5678 5679 // connecting control 5680 bool connecting_with_whitelist; 5681 switch (hci_stack->le_connecting_state){ 5682 case LE_CONNECTING_DIRECT: 5683 case LE_CONNECTING_WHITELIST: 5684 // stop connecting if: 5685 // - connecting uses white and whitelist modification pending 5686 // - if it got disabled 5687 // - resolving list modified 5688 // - own address changes 5689 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5690 if ((connecting_with_whitelist && whitelist_modification_pending) || 5691 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5692 resolving_list_modification_pending || 5693 random_address_change) { 5694 5695 connecting_stop = true; 5696 } 5697 break; 5698 default: 5699 break; 5700 } 5701 5702 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5703 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5704 // periodic sync control 5705 bool sync_with_advertiser_list; 5706 switch(hci_stack->le_periodic_sync_state){ 5707 case LE_CONNECTING_DIRECT: 5708 case LE_CONNECTING_WHITELIST: 5709 // stop sync if: 5710 // - sync with advertiser list and advertiser list modification pending 5711 // - if it got disabled 5712 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5713 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5714 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5715 periodic_sync_stop = true; 5716 } 5717 break; 5718 default: 5719 break; 5720 } 5721 #endif 5722 #endif 5723 5724 #endif /* ENABLE_LE_CENTRAL */ 5725 5726 #ifdef ENABLE_LE_PERIPHERAL 5727 // le advertisement control 5728 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5729 // stop if: 5730 // - parameter change required 5731 // - random address used in advertising and changes 5732 // - it's disabled 5733 // - whitelist change required but used for advertisement filter policy 5734 // - resolving list modified 5735 // - own address changes 5736 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5737 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5738 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5739 if (advertising_change || 5740 (advertising_uses_random_address && random_address_change) || 5741 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5742 (advertising_uses_whitelist && whitelist_modification_pending) || 5743 resolving_list_modification_pending || 5744 random_address_change) { 5745 5746 advertising_stop = true; 5747 } 5748 } 5749 5750 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5751 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5752 btstack_linked_list_iterator_t it; 5753 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5754 while (btstack_linked_list_iterator_has_next(&it)){ 5755 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5756 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5757 // stop if: 5758 // - parameter change required 5759 // - random address used in connectable advertising and changes 5760 // - it's disabled 5761 // - whitelist change required but used for advertisement filter policy 5762 // - resolving list modified 5763 // - own address changes 5764 // - advertisement set will be removed 5765 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5766 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5767 bool advertising_uses_random_address = 5768 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5769 advertising_connectable; 5770 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5771 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5772 bool advertising_set_random_address_change = 5773 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5774 bool advertising_set_will_be_removed = 5775 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5776 if (advertising_parameter_change || 5777 (advertising_uses_random_address && advertising_set_random_address_change) || 5778 (advertising_enabled == false) || 5779 (advertising_uses_whitelist && whitelist_modification_pending) || 5780 resolving_list_modification_pending || 5781 advertising_set_will_be_removed) { 5782 5783 advertising_stop = true; 5784 advertising_stop_set = advertising_set; 5785 break; 5786 } 5787 } 5788 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5789 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5790 // stop if: 5791 // - it's disabled 5792 // - parameter change required 5793 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5794 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5795 if ((periodic_enabled == false) || periodic_parameter_change){ 5796 periodic_advertising_stop = true; 5797 advertising_stop_set = advertising_set; 5798 } 5799 } 5800 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5801 } 5802 } 5803 #endif 5804 5805 #endif 5806 5807 5808 // Phase 2: stop everything that should be off during modifications 5809 5810 5811 // 2.1 Outgoing connection 5812 #ifdef ENABLE_LE_CENTRAL 5813 if (connecting_stop){ 5814 hci_send_cmd(&hci_le_create_connection_cancel); 5815 return true; 5816 } 5817 #endif 5818 5819 // 2.2 Scanning 5820 #ifdef ENABLE_LE_CENTRAL 5821 if (scanning_stop){ 5822 hci_stack->le_scanning_active = false; 5823 hci_le_scan_stop(); 5824 return true; 5825 } 5826 5827 // 2.3 Periodic Sync 5828 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5829 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5830 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5831 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5832 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5833 return true; 5834 } 5835 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5836 if (periodic_sync_stop){ 5837 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5838 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5839 return true; 5840 } 5841 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5842 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5843 #endif /* ENABLE_LE_CENTRAL */ 5844 5845 // 2.4 Advertising: legacy, extended, periodic 5846 #ifdef ENABLE_LE_PERIPHERAL 5847 if (advertising_stop){ 5848 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5849 if (hci_extended_advertising_supported()) { 5850 uint8_t advertising_stop_handle; 5851 if (advertising_stop_set != NULL){ 5852 advertising_stop_handle = advertising_stop_set->advertising_handle; 5853 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5854 } else { 5855 advertising_stop_handle = 0; 5856 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5857 } 5858 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5859 const uint16_t durations[] = { 0 }; 5860 const uint16_t max_events[] = { 0 }; 5861 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5862 } else 5863 #endif 5864 { 5865 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5866 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5867 } 5868 return true; 5869 } 5870 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5871 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5872 if (periodic_advertising_stop){ 5873 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5874 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5875 return true; 5876 } 5877 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5878 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5879 #endif /* ENABLE_LE_PERIPHERAL */ 5880 5881 5882 // Phase 3: modify 5883 5884 if (random_address_change){ 5885 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5886 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5887 if (hci_extended_advertising_supported()) { 5888 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5889 } 5890 #endif 5891 { 5892 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5893 } 5894 return true; 5895 } 5896 5897 #ifdef ENABLE_LE_CENTRAL 5898 if (hci_stack->le_scanning_param_update){ 5899 hci_stack->le_scanning_param_update = false; 5900 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5901 if (hci_extended_advertising_supported()){ 5902 // prepare arrays for all PHYs 5903 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5904 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5905 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5906 uint8_t scanning_phys = 1; // LE 1M PHY 5907 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5908 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5909 } else 5910 #endif 5911 { 5912 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5913 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5914 } 5915 return true; 5916 } 5917 #endif 5918 5919 #ifdef ENABLE_LE_PERIPHERAL 5920 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5921 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5922 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5923 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5924 if (hci_extended_advertising_supported()){ 5925 // map advertisment type to advertising event properties 5926 uint16_t adv_event_properties = 0; 5927 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 5928 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 5929 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 5930 } 5931 hci_stack->le_advertising_set_in_current_command = 0; 5932 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5933 0, 5934 adv_event_properties, 5935 hci_stack->le_advertisements_interval_min, 5936 hci_stack->le_advertisements_interval_max, 5937 hci_stack->le_advertisements_channel_map, 5938 hci_stack->le_advertisements_own_addr_type, 5939 hci_stack->le_advertisements_direct_address_type, 5940 hci_stack->le_advertisements_direct_address, 5941 hci_stack->le_advertisements_filter_policy, 5942 0x7f, // tx power: no preference 5943 0x01, // primary adv phy: LE 1M 5944 0, // secondary adv max skip 5945 0, // secondary adv phy 5946 0, // adv sid 5947 0 // scan request notification 5948 ); 5949 } 5950 #endif 5951 { 5952 hci_send_cmd(&hci_le_set_advertising_parameters, 5953 hci_stack->le_advertisements_interval_min, 5954 hci_stack->le_advertisements_interval_max, 5955 hci_stack->le_advertisements_type, 5956 hci_stack->le_advertisements_own_addr_type, 5957 hci_stack->le_advertisements_direct_address_type, 5958 hci_stack->le_advertisements_direct_address, 5959 hci_stack->le_advertisements_channel_map, 5960 hci_stack->le_advertisements_filter_policy); 5961 } 5962 return true; 5963 } 5964 5965 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 5966 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5967 uint8_t adv_data_clean[31]; 5968 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 5969 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 5970 hci_stack->le_advertisements_data_len); 5971 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 5972 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5973 if (hci_extended_advertising_supported()){ 5974 hci_stack->le_advertising_set_in_current_command = 0; 5975 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 5976 } else 5977 #endif 5978 { 5979 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 5980 } 5981 return true; 5982 } 5983 5984 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 5985 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5986 uint8_t scan_data_clean[31]; 5987 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 5988 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 5989 hci_stack->le_scan_response_data_len); 5990 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 5991 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5992 if (hci_extended_advertising_supported()){ 5993 hci_stack->le_advertising_set_in_current_command = 0; 5994 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 5995 } else 5996 #endif 5997 { 5998 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 5999 } 6000 return true; 6001 } 6002 6003 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6004 if (hci_extended_advertising_supported()) { 6005 btstack_linked_list_iterator_t it; 6006 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6007 while (btstack_linked_list_iterator_has_next(&it)){ 6008 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6009 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6010 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6011 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6012 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6013 return true; 6014 } 6015 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6016 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6017 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6018 return true; 6019 } 6020 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6021 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6022 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6023 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6024 advertising_set->advertising_handle, 6025 advertising_set->extended_params.advertising_event_properties, 6026 advertising_set->extended_params.primary_advertising_interval_min, 6027 advertising_set->extended_params.primary_advertising_interval_max, 6028 advertising_set->extended_params.primary_advertising_channel_map, 6029 advertising_set->extended_params.own_address_type, 6030 advertising_set->extended_params.peer_address_type, 6031 advertising_set->extended_params.peer_address, 6032 advertising_set->extended_params.advertising_filter_policy, 6033 advertising_set->extended_params.advertising_tx_power, 6034 advertising_set->extended_params.primary_advertising_phy, 6035 advertising_set->extended_params.secondary_advertising_max_skip, 6036 advertising_set->extended_params.secondary_advertising_phy, 6037 advertising_set->extended_params.advertising_sid, 6038 advertising_set->extended_params.scan_request_notification_enable 6039 ); 6040 return true; 6041 } 6042 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6043 uint16_t pos = advertising_set->adv_data_pos; 6044 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6045 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6046 if ((operation & 0x02) != 0){ 6047 // last fragment or complete data 6048 operation |= 2; 6049 advertising_set->adv_data_pos = 0; 6050 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6051 } else { 6052 advertising_set->adv_data_pos += data_to_upload; 6053 } 6054 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6055 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6056 return true; 6057 } 6058 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6059 uint16_t pos = advertising_set->scan_data_pos; 6060 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6061 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6062 if ((operation & 0x02) != 0){ 6063 advertising_set->scan_data_pos = 0; 6064 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6065 } else { 6066 advertising_set->scan_data_pos += data_to_upload; 6067 } 6068 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6069 hci_send_cmd(&hci_le_set_extended_scan_response_data, operation, 0x03, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6070 return true; 6071 } 6072 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6073 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6074 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6075 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6076 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6077 advertising_set->advertising_handle, 6078 advertising_set->periodic_params.periodic_advertising_interval_min, 6079 advertising_set->periodic_params.periodic_advertising_interval_max, 6080 advertising_set->periodic_params.periodic_advertising_properties); 6081 return true; 6082 } 6083 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6084 uint16_t pos = advertising_set->periodic_data_pos; 6085 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6086 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6087 if ((operation & 0x02) != 0){ 6088 // last fragment or complete data 6089 operation |= 2; 6090 advertising_set->periodic_data_pos = 0; 6091 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6092 } else { 6093 advertising_set->periodic_data_pos += data_to_upload; 6094 } 6095 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6096 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6097 return true; 6098 } 6099 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6100 } 6101 } 6102 #endif 6103 6104 #endif 6105 6106 #ifdef ENABLE_LE_CENTRAL 6107 // if connect with whitelist was active and is not cancelled yet, wait until next time 6108 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6109 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6110 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6111 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6112 #endif 6113 #endif 6114 6115 // LE Whitelist Management 6116 if (whitelist_modification_pending){ 6117 // add/remove entries 6118 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6119 while (btstack_linked_list_iterator_has_next(&lit)){ 6120 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6121 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6122 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6123 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 6124 return true; 6125 } 6126 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6127 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6128 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6129 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6130 return true; 6131 } 6132 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 6133 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6134 btstack_memory_whitelist_entry_free(entry); 6135 } 6136 } 6137 } 6138 6139 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6140 // LE Resolving List Management 6141 if (resolving_list_supported) { 6142 uint16_t i; 6143 switch (hci_stack->le_resolving_list_state) { 6144 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6145 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6146 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6147 return true; 6148 case LE_RESOLVING_LIST_READ_SIZE: 6149 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6150 hci_send_cmd(&hci_le_read_resolving_list_size); 6151 return true; 6152 case LE_RESOLVING_LIST_SEND_CLEAR: 6153 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6154 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6155 sizeof(hci_stack->le_resolving_list_add_entries)); 6156 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6157 sizeof(hci_stack->le_resolving_list_remove_entries)); 6158 hci_send_cmd(&hci_le_clear_resolving_list); 6159 return true; 6160 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6161 // first remove old entries 6162 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6163 uint8_t offset = i >> 3; 6164 uint8_t mask = 1 << (i & 7); 6165 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6166 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6167 bd_addr_t peer_identity_addreses; 6168 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6169 sm_key_t peer_irk; 6170 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6171 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6172 6173 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6174 // trigger whitelist entry 'update' (work around for controller bug) 6175 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6176 while (btstack_linked_list_iterator_has_next(&lit)) { 6177 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6178 if (entry->address_type != peer_identity_addr_type) continue; 6179 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6180 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6181 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6182 } 6183 #endif 6184 6185 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6186 peer_identity_addreses); 6187 return true; 6188 } 6189 6190 // then add new entries 6191 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6192 uint8_t offset = i >> 3; 6193 uint8_t mask = 1 << (i & 7); 6194 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6195 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6196 bd_addr_t peer_identity_addreses; 6197 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6198 sm_key_t peer_irk; 6199 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6200 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6201 if (btstack_is_null(peer_irk, 16)) continue; 6202 const uint8_t *local_irk = gap_get_persistent_irk(); 6203 // command uses format specifier 'P' that stores 16-byte value without flip 6204 uint8_t local_irk_flipped[16]; 6205 uint8_t peer_irk_flipped[16]; 6206 reverse_128(local_irk, local_irk_flipped); 6207 reverse_128(peer_irk, peer_irk_flipped); 6208 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6209 peer_irk_flipped, local_irk_flipped); 6210 return true; 6211 } 6212 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6213 break; 6214 6215 default: 6216 break; 6217 } 6218 } 6219 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6220 #endif 6221 6222 #ifdef ENABLE_LE_CENTRAL 6223 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6224 // LE Whitelist Management 6225 if (periodic_list_modification_pending){ 6226 // add/remove entries 6227 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6228 while (btstack_linked_list_iterator_has_next(&lit)){ 6229 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6230 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6231 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6232 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6233 return true; 6234 } 6235 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6236 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6237 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6238 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6239 return true; 6240 } 6241 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6242 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6243 btstack_memory_periodic_advertiser_list_entry_free(entry); 6244 } 6245 } 6246 } 6247 #endif 6248 #endif 6249 6250 #ifdef ENABLE_LE_CENTRAL 6251 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6252 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6253 if (hci_stack->le_past_set_default_params){ 6254 hci_stack->le_past_set_default_params = false; 6255 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6256 hci_stack->le_past_mode, 6257 hci_stack->le_past_skip, 6258 hci_stack->le_past_sync_timeout, 6259 hci_stack->le_past_cte_type); 6260 return true; 6261 } 6262 #endif 6263 #endif 6264 #endif 6265 6266 // post-pone all actions until stack is fully working 6267 if (hci_stack->state != HCI_STATE_WORKING) return false; 6268 6269 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6270 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6271 6272 // Phase 4: restore state 6273 6274 #ifdef ENABLE_LE_CENTRAL 6275 // re-start scanning 6276 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6277 hci_stack->le_scanning_active = true; 6278 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6279 if (hci_extended_advertising_supported()){ 6280 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6281 } else 6282 #endif 6283 { 6284 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6285 } 6286 return true; 6287 } 6288 #endif 6289 6290 #ifdef ENABLE_LE_CENTRAL 6291 // re-start connecting 6292 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6293 bd_addr_t null_addr; 6294 memset(null_addr, 0, 6); 6295 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6296 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6297 hci_send_cmd(&hci_le_create_connection, 6298 hci_stack->le_connection_scan_interval, // scan interval: 60 ms 6299 hci_stack->le_connection_scan_window, // scan interval: 30 ms 6300 1, // use whitelist 6301 0, // peer address type 6302 null_addr, // peer bd addr 6303 hci_stack->le_connection_own_addr_type, // our addr type: 6304 hci_stack->le_connection_interval_min, // conn interval min 6305 hci_stack->le_connection_interval_max, // conn interval max 6306 hci_stack->le_connection_latency, // conn latency 6307 hci_stack->le_supervision_timeout, // conn latency 6308 hci_stack->le_minimum_ce_length, // min ce length 6309 hci_stack->le_maximum_ce_length // max ce length 6310 ); 6311 return true; 6312 } 6313 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6314 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6315 switch(hci_stack->le_periodic_sync_request){ 6316 case LE_CONNECTING_DIRECT: 6317 case LE_CONNECTING_WHITELIST: 6318 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6319 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6320 hci_stack->le_periodic_sync_options, 6321 hci_stack->le_periodic_sync_advertising_sid, 6322 hci_stack->le_periodic_sync_advertiser_address_type, 6323 hci_stack->le_periodic_sync_advertiser_address, 6324 hci_stack->le_periodic_sync_skip, 6325 hci_stack->le_periodic_sync_timeout, 6326 hci_stack->le_periodic_sync_cte_type); 6327 return true; 6328 default: 6329 break; 6330 } 6331 } 6332 #endif 6333 #endif 6334 6335 #ifdef ENABLE_LE_PERIPHERAL 6336 // re-start advertising 6337 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6338 // check if advertisements should be enabled given 6339 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6340 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6341 6342 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6343 if (hci_extended_advertising_supported()){ 6344 const uint8_t advertising_handles[] = { 0 }; 6345 const uint16_t durations[] = { 0 }; 6346 const uint16_t max_events[] = { 0 }; 6347 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6348 } else 6349 #endif 6350 { 6351 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6352 } 6353 return true; 6354 } 6355 6356 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6357 if (hci_extended_advertising_supported()) { 6358 btstack_linked_list_iterator_t it; 6359 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6360 while (btstack_linked_list_iterator_has_next(&it)) { 6361 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6362 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6363 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6364 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6365 const uint16_t durations[] = { advertising_set->enable_timeout }; 6366 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6367 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6368 return true; 6369 } 6370 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6371 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6372 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6373 uint8_t enable = 1; 6374 if (advertising_set->periodic_include_adi){ 6375 enable |= 2; 6376 } 6377 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6378 return true; 6379 } 6380 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6381 } 6382 } 6383 #endif 6384 #endif 6385 6386 return false; 6387 } 6388 6389 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6390 static bool hci_run_iso_tasks(void){ 6391 btstack_linked_list_iterator_t it; 6392 6393 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6394 return false; 6395 } 6396 6397 // BIG 6398 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6399 while (btstack_linked_list_iterator_has_next(&it)){ 6400 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6401 switch (big->state){ 6402 case LE_AUDIO_BIG_STATE_CREATE: 6403 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6404 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6405 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6406 hci_send_cmd(&hci_le_create_big, 6407 big->params->big_handle, 6408 big->params->advertising_handle, 6409 big->params->num_bis, 6410 big->params->sdu_interval_us, 6411 big->params->max_sdu, 6412 big->params->max_transport_latency_ms, 6413 big->params->rtn, 6414 big->params->phy, 6415 big->params->packing, 6416 big->params->framing, 6417 big->params->encryption, 6418 big->params->broadcast_code); 6419 return true; 6420 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6421 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6422 hci_send_cmd(&hci_le_setup_iso_data_path, big->bis_con_handles[big->state_vars.next_bis], 0, 0, 0, 0, 0, 0, 0, NULL); 6423 return true; 6424 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6425 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6426 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6427 return true; 6428 case LE_AUDIO_BIG_STATE_TERMINATE: 6429 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6430 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6431 return true; 6432 default: 6433 break; 6434 } 6435 } 6436 6437 // BIG Sync 6438 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6439 while (btstack_linked_list_iterator_has_next(&it)){ 6440 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6441 switch (big_sync->state){ 6442 case LE_AUDIO_BIG_STATE_CREATE: 6443 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6444 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6445 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6446 hci_send_cmd(&hci_le_big_create_sync, 6447 big_sync->params->big_handle, 6448 big_sync->params->sync_handle, 6449 big_sync->params->encryption, 6450 big_sync->params->broadcast_code, 6451 big_sync->params->mse, 6452 big_sync->params->big_sync_timeout_10ms, 6453 big_sync->params->num_bis, 6454 big_sync->params->bis_indices); 6455 return true; 6456 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6457 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6458 hci_send_cmd(&hci_le_setup_iso_data_path, big_sync->bis_con_handles[big_sync->state_vars.next_bis], 1, 0, 0, 0, 0, 0, 0, NULL); 6459 return true; 6460 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6461 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6462 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6463 return true; 6464 case LE_AUDIO_BIG_STATE_TERMINATE: 6465 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6466 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6467 return true; 6468 default: 6469 break; 6470 } 6471 } 6472 6473 // CIG 6474 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6475 while (btstack_linked_list_iterator_has_next(&it)) { 6476 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6477 uint8_t i; 6478 // Set CIG Parameters 6479 uint8_t cis_id[MAX_NR_CIS]; 6480 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6481 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6482 uint8_t phy_c_to_p[MAX_NR_CIS]; 6483 uint8_t phy_p_to_c[MAX_NR_CIS]; 6484 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6485 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6486 switch (cig->state) { 6487 case LE_AUDIO_CIG_STATE_CREATE: 6488 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6489 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6490 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6491 le_audio_cig_params_t * params = cig->params; 6492 for (i = 0; i < params->num_cis; i++) { 6493 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6494 cis_id[i] = cis_params->cis_id; 6495 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6496 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6497 phy_c_to_p[i] = cis_params->phy_c_to_p; 6498 phy_p_to_c[i] = cis_params->phy_p_to_c; 6499 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6500 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6501 } 6502 hci_send_cmd(&hci_le_set_cig_parameters, 6503 cig->cig_id, 6504 params->sdu_interval_c_to_p, 6505 params->sdu_interval_p_to_c, 6506 params->worst_case_sca, 6507 params->packing, 6508 params->framing, 6509 params->max_transport_latency_c_to_p, 6510 params->max_transport_latency_p_to_c, 6511 params->num_cis, 6512 cis_id, 6513 max_sdu_c_to_p, 6514 max_sdu_p_to_c, 6515 phy_c_to_p, 6516 phy_p_to_c, 6517 rtn_c_to_p, 6518 rtn_p_to_c 6519 ); 6520 return true; 6521 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6522 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6523 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6524 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6525 for (i=0;i<cig->num_cis;i++){ 6526 cig->cis_setup_active[i] = true; 6527 } 6528 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6529 return true; 6530 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6531 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6532 // find next path to setup 6533 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6534 if (cig->cis_established[cis_index] == false) { 6535 continue; 6536 } 6537 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6538 bool setup = true; 6539 if (cis_direction == 0){ 6540 // 0 - input - host to controller 6541 // we are central => central to peripheral 6542 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6543 } else { 6544 // 1 - output - controller to host 6545 // we are central => peripheral to central 6546 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6547 } 6548 if (setup){ 6549 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6550 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6551 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6552 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, 0, 0, 0, 0, 0, NULL); 6553 return true; 6554 } 6555 cig->state_vars.next_cis++; 6556 } 6557 // emit done 6558 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6559 default: 6560 break; 6561 } 6562 } 6563 6564 // CIS Accept/Reject 6565 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6566 while (btstack_linked_list_iterator_has_next(&it)) { 6567 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6568 hci_con_handle_t con_handle; 6569 switch (iso_stream->state){ 6570 case HCI_ISO_STREAM_W2_ACCEPT: 6571 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6572 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6573 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6574 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->con_handle); 6575 return true; 6576 case HCI_ISO_STREAM_W2_REJECT: 6577 con_handle = iso_stream->con_handle; 6578 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6579 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6580 hci_iso_stream_finalize(iso_stream); 6581 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6582 return true; 6583 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6584 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6585 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6586 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6587 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->con_handle, 0, 0, 0, 0, 0, 0, 0, NULL); 6588 break; 6589 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6590 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6591 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6592 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6593 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->con_handle, 1, 0, 0, 0, 0, 0, 0, NULL); 6594 break; 6595 default: 6596 break; 6597 } 6598 } 6599 6600 return false; 6601 } 6602 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6603 #endif 6604 6605 static bool hci_run_general_pending_commands(void){ 6606 btstack_linked_item_t * it; 6607 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6608 hci_connection_t * connection = (hci_connection_t *) it; 6609 6610 switch(connection->state){ 6611 case SEND_CREATE_CONNECTION: 6612 switch(connection->address_type){ 6613 #ifdef ENABLE_CLASSIC 6614 case BD_ADDR_TYPE_ACL: 6615 log_info("sending hci_create_connection"); 6616 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6617 break; 6618 #endif 6619 default: 6620 #ifdef ENABLE_BLE 6621 #ifdef ENABLE_LE_CENTRAL 6622 log_info("sending hci_le_create_connection"); 6623 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6624 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6625 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6626 if (hci_extended_advertising_supported()) { 6627 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 6628 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 6629 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 6630 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 6631 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 6632 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 6633 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 6634 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 6635 hci_send_cmd(&hci_le_extended_create_connection, 6636 0, // don't use whitelist 6637 hci_stack->le_connection_own_addr_type, // our addr type: 6638 connection->address_type, // peer address type 6639 connection->address, // peer bd addr 6640 1, // initiating PHY - 1M 6641 le_connection_scan_interval, // conn scan interval 6642 le_connection_scan_window, // conn scan windows 6643 le_connection_interval_min, // conn interval min 6644 le_connection_interval_max, // conn interval max 6645 le_connection_latency, // conn latency 6646 le_supervision_timeout, // conn latency 6647 le_minimum_ce_length, // min ce length 6648 le_maximum_ce_length // max ce length 6649 ); } 6650 else 6651 #endif 6652 { 6653 hci_send_cmd(&hci_le_create_connection, 6654 hci_stack->le_connection_scan_interval, // conn scan interval 6655 hci_stack->le_connection_scan_window, // conn scan windows 6656 0, // don't use whitelist 6657 connection->address_type, // peer address type 6658 connection->address, // peer bd addr 6659 hci_stack->le_connection_own_addr_type, // our addr type: 6660 hci_stack->le_connection_interval_min, // conn interval min 6661 hci_stack->le_connection_interval_max, // conn interval max 6662 hci_stack->le_connection_latency, // conn latency 6663 hci_stack->le_supervision_timeout, // conn latency 6664 hci_stack->le_minimum_ce_length, // min ce length 6665 hci_stack->le_maximum_ce_length // max ce length 6666 ); 6667 } 6668 connection->state = SENT_CREATE_CONNECTION; 6669 #endif 6670 #endif 6671 break; 6672 } 6673 return true; 6674 6675 #ifdef ENABLE_CLASSIC 6676 case RECEIVED_CONNECTION_REQUEST: 6677 connection->role = HCI_ROLE_SLAVE; 6678 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6679 log_info("sending hci_accept_connection_request"); 6680 connection->state = ACCEPTED_CONNECTION_REQUEST; 6681 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6682 return true; 6683 } 6684 break; 6685 #endif 6686 case SEND_DISCONNECT: 6687 connection->state = SENT_DISCONNECT; 6688 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6689 return true; 6690 6691 default: 6692 break; 6693 } 6694 6695 // no further commands if connection is about to get shut down 6696 if (connection->state == SENT_DISCONNECT) continue; 6697 6698 #ifdef ENABLE_CLASSIC 6699 6700 // Handling link key request requires remote supported features 6701 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6702 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6703 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6704 6705 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6706 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6707 if (have_link_key && security_level_sufficient){ 6708 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6709 } else { 6710 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6711 } 6712 return true; 6713 } 6714 6715 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6716 log_info("denying to pin request"); 6717 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6718 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6719 return true; 6720 } 6721 6722 // security assessment requires remote features 6723 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6724 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6725 hci_ssp_assess_security_on_io_cap_request(connection); 6726 // 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 6727 } 6728 6729 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6730 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6731 // set authentication requirements: 6732 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6733 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6734 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6735 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6736 authreq |= 1; 6737 } 6738 bool bonding = hci_stack->bondable; 6739 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6740 // if we have received IO Cap Response, we're in responder role 6741 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6742 if (bonding && !remote_bonding){ 6743 log_info("Remote not bonding, dropping local flag"); 6744 bonding = false; 6745 } 6746 } 6747 if (bonding){ 6748 if (connection->bonding_flags & BONDING_DEDICATED){ 6749 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6750 } else { 6751 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6752 } 6753 } 6754 uint8_t have_oob_data = 0; 6755 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6756 if (connection->classic_oob_c_192 != NULL){ 6757 have_oob_data |= 1; 6758 } 6759 if (connection->classic_oob_c_256 != NULL){ 6760 have_oob_data |= 2; 6761 } 6762 #endif 6763 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6764 return true; 6765 } 6766 6767 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6768 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6769 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6770 return true; 6771 } 6772 6773 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6774 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6775 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6776 const uint8_t zero[16] = { 0 }; 6777 const uint8_t * r_192 = zero; 6778 const uint8_t * c_192 = zero; 6779 const uint8_t * r_256 = zero; 6780 const uint8_t * c_256 = zero; 6781 // verify P-256 OOB 6782 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6783 c_256 = connection->classic_oob_c_256; 6784 if (connection->classic_oob_r_256 != NULL) { 6785 r_256 = connection->classic_oob_r_256; 6786 } 6787 } 6788 // verify P-192 OOB 6789 if ((connection->classic_oob_c_192 != NULL)) { 6790 c_192 = connection->classic_oob_c_192; 6791 if (connection->classic_oob_r_192 != NULL) { 6792 r_192 = connection->classic_oob_r_192; 6793 } 6794 } 6795 6796 // assess security 6797 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6798 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6799 if (need_level_4 && !can_reach_level_4){ 6800 log_info("Level 4 required, but not possible -> abort"); 6801 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6802 // send oob negative reply 6803 c_256 = NULL; 6804 c_192 = NULL; 6805 } 6806 6807 // Reply 6808 if (c_256 != zero) { 6809 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6810 } else if (c_192 != zero){ 6811 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6812 } else { 6813 hci_stack->classic_oob_con_handle = connection->con_handle; 6814 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6815 } 6816 return true; 6817 } 6818 #endif 6819 6820 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6821 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6822 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6823 return true; 6824 } 6825 6826 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6827 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6828 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6829 return true; 6830 } 6831 6832 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6833 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6834 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6835 return true; 6836 } 6837 6838 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6839 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6840 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6841 connection->state = SENT_DISCONNECT; 6842 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6843 return true; 6844 } 6845 6846 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6847 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6848 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6849 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6850 return true; 6851 } 6852 6853 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6854 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6855 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6856 return true; 6857 } 6858 6859 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 6860 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 6861 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 6862 return true; 6863 } 6864 6865 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 6866 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6867 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 6868 return true; 6869 } 6870 6871 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 6872 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 6873 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 6874 return true; 6875 } 6876 6877 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 6878 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 6879 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 6880 return true; 6881 } 6882 #endif 6883 6884 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 6885 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 6886 #ifdef ENABLE_CLASSIC 6887 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 6888 #endif 6889 if (connection->state != SENT_DISCONNECT){ 6890 connection->state = SENT_DISCONNECT; 6891 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 6892 return true; 6893 } 6894 } 6895 6896 #ifdef ENABLE_CLASSIC 6897 uint16_t sniff_min_interval; 6898 switch (connection->sniff_min_interval){ 6899 case 0: 6900 break; 6901 case 0xffff: 6902 connection->sniff_min_interval = 0; 6903 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 6904 return true; 6905 default: 6906 sniff_min_interval = connection->sniff_min_interval; 6907 connection->sniff_min_interval = 0; 6908 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 6909 return true; 6910 } 6911 6912 if (connection->sniff_subrating_max_latency != 0xffff){ 6913 uint16_t max_latency = connection->sniff_subrating_max_latency; 6914 connection->sniff_subrating_max_latency = 0; 6915 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 6916 return true; 6917 } 6918 6919 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 6920 uint8_t service_type = (uint8_t) connection->qos_service_type; 6921 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 6922 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); 6923 return true; 6924 } 6925 6926 if (connection->request_role != HCI_ROLE_INVALID){ 6927 hci_role_t role = connection->request_role; 6928 connection->request_role = HCI_ROLE_INVALID; 6929 hci_send_cmd(&hci_switch_role_command, connection->address, role); 6930 return true; 6931 } 6932 #endif 6933 6934 if (connection->gap_connection_tasks != 0){ 6935 #ifdef ENABLE_CLASSIC 6936 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6937 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6938 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6939 return true; 6940 } 6941 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6942 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6943 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6944 return true; 6945 } 6946 #endif 6947 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6948 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6949 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6950 return true; 6951 } 6952 #ifdef ENABLE_BLE 6953 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 6954 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 6955 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 6956 return true; 6957 } 6958 #endif 6959 } 6960 6961 #ifdef ENABLE_BLE 6962 switch (connection->le_con_parameter_update_state){ 6963 // response to L2CAP CON PARAMETER UPDATE REQUEST 6964 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 6965 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6966 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 6967 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6968 0x0000, 0xffff); 6969 return true; 6970 case CON_PARAMETER_UPDATE_REPLY: 6971 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6972 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 6973 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6974 0x0000, 0xffff); 6975 return true; 6976 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 6977 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6978 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 6979 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 6980 return true; 6981 default: 6982 break; 6983 } 6984 if (connection->le_phy_update_all_phys != 0xffu){ 6985 uint8_t all_phys = connection->le_phy_update_all_phys; 6986 connection->le_phy_update_all_phys = 0xff; 6987 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); 6988 return true; 6989 } 6990 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6991 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 6992 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 6993 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 6994 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 6995 return true; 6996 } 6997 #endif 6998 #endif 6999 } 7000 return false; 7001 } 7002 7003 static void hci_run(void){ 7004 7005 // stack state sub statemachines 7006 switch (hci_stack->state) { 7007 case HCI_STATE_INITIALIZING: 7008 hci_initializing_run(); 7009 break; 7010 case HCI_STATE_HALTING: 7011 hci_halting_run(); 7012 break; 7013 case HCI_STATE_FALLING_ASLEEP: 7014 hci_falling_asleep_run(); 7015 break; 7016 default: 7017 break; 7018 } 7019 7020 // allow to run after initialization to working transition 7021 if (hci_stack->state != HCI_STATE_WORKING){ 7022 return; 7023 } 7024 7025 bool done; 7026 7027 // send continuation fragments first, as they block the prepared packet buffer 7028 done = hci_run_acl_fragments(); 7029 if (done) return; 7030 7031 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7032 done = hci_run_iso_fragments(); 7033 if (done) return; 7034 #endif 7035 7036 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7037 // send host num completed packets next as they don't require num_cmd_packets > 0 7038 if (!hci_can_send_comand_packet_transport()) return; 7039 if (hci_stack->host_completed_packets){ 7040 hci_host_num_completed_packets(); 7041 return; 7042 } 7043 #endif 7044 7045 if (!hci_can_send_command_packet_now()) return; 7046 7047 // global/non-connection oriented commands 7048 7049 7050 #ifdef ENABLE_CLASSIC 7051 // general gap classic 7052 done = hci_run_general_gap_classic(); 7053 if (done) return; 7054 #endif 7055 7056 #ifdef ENABLE_BLE 7057 // general gap le 7058 done = hci_run_general_gap_le(); 7059 if (done) return; 7060 7061 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7062 // ISO related tasks, e.g. BIG create/terminate/sync 7063 done = hci_run_iso_tasks(); 7064 if (done) return; 7065 #endif 7066 #endif 7067 7068 // send pending HCI commands 7069 hci_run_general_pending_commands(); 7070 } 7071 7072 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7073 // house-keeping 7074 7075 #ifdef ENABLE_CLASSIC 7076 bd_addr_t addr; 7077 hci_connection_t * conn; 7078 #endif 7079 #ifdef ENABLE_LE_CENTRAL 7080 uint8_t initiator_filter_policy; 7081 #endif 7082 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7083 uint8_t i; 7084 uint8_t num_cis; 7085 hci_con_handle_t cis_handle; 7086 uint8_t status; 7087 #endif 7088 7089 uint16_t opcode = little_endian_read_16(packet, 0); 7090 switch (opcode) { 7091 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7092 hci_stack->loopback_mode = packet[3]; 7093 break; 7094 7095 #ifdef ENABLE_CLASSIC 7096 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7097 reverse_bd_addr(&packet[3], addr); 7098 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7099 7100 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7101 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7102 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7103 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7104 } 7105 7106 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7107 if (!conn) { 7108 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7109 if (!conn) { 7110 // notify client that alloc failed 7111 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7112 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7113 } 7114 conn->state = SEND_CREATE_CONNECTION; 7115 conn->role = HCI_ROLE_MASTER; 7116 } 7117 7118 log_info("conn state %u", conn->state); 7119 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7120 switch (conn->state) { 7121 // if connection active exists 7122 case OPEN: 7123 // and OPEN, emit connection complete command 7124 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7125 // packet not sent to controller 7126 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7127 case RECEIVED_DISCONNECTION_COMPLETE: 7128 // create connection triggered in disconnect complete event, let's do it now 7129 break; 7130 case SEND_CREATE_CONNECTION: 7131 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7132 if (hci_classic_operation_active()){ 7133 return ERROR_CODE_SUCCESS; 7134 } 7135 #endif 7136 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7137 break; 7138 default: 7139 // otherwise, just ignore as it is already in the open process 7140 // packet not sent to controller 7141 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7142 } 7143 conn->state = SENT_CREATE_CONNECTION; 7144 7145 // track outgoing connection 7146 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7147 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7148 break; 7149 7150 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 7151 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7152 // setup_synchronous_connection? Voice setting at offset 22 7153 // TODO: compare to current setting if sco connection already active 7154 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7155 break; 7156 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7157 // accept_synchronous_connection? Voice setting at offset 18 7158 // TODO: compare to current setting if sco connection already active 7159 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7160 // track outgoing connection 7161 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7162 reverse_bd_addr(&packet[3], hci_stack->outgoing_addr); 7163 break; 7164 #endif 7165 #endif 7166 7167 #ifdef ENABLE_BLE 7168 #ifdef ENABLE_LE_CENTRAL 7169 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7170 // white list used? 7171 initiator_filter_policy = packet[7]; 7172 switch (initiator_filter_policy) { 7173 case 0: 7174 // whitelist not used 7175 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7176 break; 7177 case 1: 7178 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7179 break; 7180 default: 7181 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7182 break; 7183 } 7184 // track outgoing connection 7185 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer addres type 7186 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7187 break; 7188 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7189 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7190 break; 7191 #endif 7192 #endif /* ENABLE_BLE */ 7193 default: 7194 break; 7195 } 7196 7197 hci_stack->num_cmd_packets--; 7198 7199 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7200 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7201 if (err != 0){ 7202 return ERROR_CODE_HARDWARE_FAILURE; 7203 } 7204 return ERROR_CODE_SUCCESS; 7205 } 7206 7207 // disconnect because of security block 7208 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7209 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7210 if (!connection) return; 7211 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7212 } 7213 7214 7215 // Configure Secure Simple Pairing 7216 7217 #ifdef ENABLE_CLASSIC 7218 7219 // enable will enable SSP during init 7220 void gap_ssp_set_enable(int enable){ 7221 hci_stack->ssp_enable = enable; 7222 } 7223 7224 static int hci_local_ssp_activated(void){ 7225 return gap_ssp_supported() && hci_stack->ssp_enable; 7226 } 7227 7228 // if set, BTstack will respond to io capability request using authentication requirement 7229 void gap_ssp_set_io_capability(int io_capability){ 7230 hci_stack->ssp_io_capability = io_capability; 7231 } 7232 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7233 hci_stack->ssp_authentication_requirement = authentication_requirement; 7234 } 7235 7236 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7237 void gap_ssp_set_auto_accept(int auto_accept){ 7238 hci_stack->ssp_auto_accept = auto_accept; 7239 } 7240 7241 void gap_secure_connections_enable(bool enable){ 7242 hci_stack->secure_connections_enable = enable; 7243 } 7244 bool gap_secure_connections_active(void){ 7245 return hci_stack->secure_connections_active; 7246 } 7247 7248 #endif 7249 7250 // va_list part of hci_send_cmd 7251 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7252 if (!hci_can_send_command_packet_now()){ 7253 log_error("hci_send_cmd called but cannot send packet now"); 7254 return ERROR_CODE_COMMAND_DISALLOWED; 7255 } 7256 7257 // for HCI INITIALIZATION 7258 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7259 hci_stack->last_cmd_opcode = cmd->opcode; 7260 7261 hci_reserve_packet_buffer(); 7262 uint8_t * packet = hci_stack->hci_packet_buffer; 7263 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7264 uint8_t status = hci_send_cmd_packet(packet, size); 7265 7266 // release packet buffer on error or for synchronous transport implementations 7267 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7268 hci_release_packet_buffer(); 7269 hci_emit_transport_packet_sent(); 7270 } 7271 7272 return status; 7273 } 7274 7275 /** 7276 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7277 */ 7278 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7279 va_list argptr; 7280 va_start(argptr, cmd); 7281 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7282 va_end(argptr); 7283 return status; 7284 } 7285 7286 // Create various non-HCI events. 7287 // TODO: generalize, use table similar to hci_create_command 7288 7289 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7290 // dump packet 7291 if (dump) { 7292 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7293 } 7294 7295 // dispatch to all event handlers 7296 btstack_linked_list_iterator_t it; 7297 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7298 while (btstack_linked_list_iterator_has_next(&it)){ 7299 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7300 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7301 } 7302 } 7303 7304 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7305 if (!hci_stack->acl_packet_handler) return; 7306 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7307 } 7308 7309 #ifdef ENABLE_CLASSIC 7310 static void hci_notify_if_sco_can_send_now(void){ 7311 // notify SCO sender if waiting 7312 if (!hci_stack->sco_waiting_for_can_send_now) return; 7313 if (hci_can_send_sco_packet_now()){ 7314 hci_stack->sco_waiting_for_can_send_now = 0; 7315 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7316 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7317 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7318 } 7319 } 7320 7321 // parsing end emitting has been merged to reduce code size 7322 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7323 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7324 7325 uint8_t * eir_data; 7326 ad_context_t context; 7327 const uint8_t * name; 7328 uint8_t name_len; 7329 7330 if (size < 3) return; 7331 7332 int event_type = hci_event_packet_get_type(packet); 7333 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7334 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7335 7336 switch (event_type){ 7337 case HCI_EVENT_INQUIRY_RESULT: 7338 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7339 if (size != (3 + (num_responses * 14))) return; 7340 break; 7341 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7342 if (size != 257) return; 7343 if (num_responses != 1) return; 7344 break; 7345 default: 7346 return; 7347 } 7348 7349 // event[1] is set at the end 7350 int i; 7351 for (i=0; i<num_responses;i++){ 7352 memset(event, 0, sizeof(event)); 7353 event[0] = GAP_EVENT_INQUIRY_RESULT; 7354 uint8_t event_size = 27; // if name is not set by EIR 7355 7356 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7357 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7358 (void)memcpy(&event[9], 7359 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7360 3); // class of device 7361 (void)memcpy(&event[12], 7362 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7363 2); // clock offset 7364 7365 switch (event_type){ 7366 case HCI_EVENT_INQUIRY_RESULT: 7367 // 14,15,16,17 = 0, size 18 7368 break; 7369 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7370 event[14] = 1; 7371 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7372 // 16,17 = 0, size 18 7373 break; 7374 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7375 event[14] = 1; 7376 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7377 // EIR packets only contain a single inquiry response 7378 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7379 name = NULL; 7380 // Iterate over EIR data 7381 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7382 uint8_t data_type = ad_iterator_get_data_type(&context); 7383 uint8_t data_size = ad_iterator_get_data_len(&context); 7384 const uint8_t * data = ad_iterator_get_data(&context); 7385 // Prefer Complete Local Name over Shortened Local Name 7386 switch (data_type){ 7387 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7388 if (name) continue; 7389 /* fall through */ 7390 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7391 name = data; 7392 name_len = data_size; 7393 break; 7394 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7395 if (data_size != 8) break; 7396 event[16] = 1; 7397 memcpy(&event[17], data, 8); 7398 break; 7399 default: 7400 break; 7401 } 7402 } 7403 if (name){ 7404 event[25] = 1; 7405 // truncate name if needed 7406 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7407 event[26] = len; 7408 (void)memcpy(&event[27], name, len); 7409 event_size += len; 7410 } 7411 break; 7412 default: 7413 return; 7414 } 7415 event[1] = event_size - 2; 7416 hci_emit_event(event, event_size, 1); 7417 } 7418 } 7419 #endif 7420 7421 void hci_emit_state(void){ 7422 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7423 uint8_t event[3]; 7424 event[0] = BTSTACK_EVENT_STATE; 7425 event[1] = sizeof(event) - 2u; 7426 event[2] = hci_stack->state; 7427 hci_emit_event(event, sizeof(event), 1); 7428 } 7429 7430 #ifdef ENABLE_CLASSIC 7431 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7432 uint8_t event[13]; 7433 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7434 event[1] = sizeof(event) - 2; 7435 event[2] = status; 7436 little_endian_store_16(event, 3, con_handle); 7437 reverse_bd_addr(address, &event[5]); 7438 event[11] = 1; // ACL connection 7439 event[12] = 0; // encryption disabled 7440 hci_emit_event(event, sizeof(event), 1); 7441 } 7442 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7443 if (disable_l2cap_timeouts) return; 7444 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7445 uint8_t event[4]; 7446 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7447 event[1] = sizeof(event) - 2; 7448 little_endian_store_16(event, 2, conn->con_handle); 7449 hci_emit_event(event, sizeof(event), 1); 7450 } 7451 #endif 7452 7453 #ifdef ENABLE_BLE 7454 #ifdef ENABLE_LE_CENTRAL 7455 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){ 7456 uint8_t event[21]; 7457 event[0] = HCI_EVENT_LE_META; 7458 event[1] = sizeof(event) - 2u; 7459 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7460 event[3] = status; 7461 little_endian_store_16(event, 4, con_handle); 7462 event[6] = 0; // TODO: role 7463 event[7] = address_type; 7464 reverse_bd_addr(address, &event[8]); 7465 little_endian_store_16(event, 14, 0); // interval 7466 little_endian_store_16(event, 16, 0); // latency 7467 little_endian_store_16(event, 18, 0); // supervision timeout 7468 event[20] = 0; // master clock accuracy 7469 hci_emit_event(event, sizeof(event), 1); 7470 } 7471 #endif 7472 #endif 7473 7474 static void hci_emit_transport_packet_sent(void){ 7475 // notify upper stack that it might be possible to send again 7476 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7477 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7478 } 7479 7480 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7481 uint8_t event[6]; 7482 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7483 event[1] = sizeof(event) - 2u; 7484 event[2] = 0; // status = OK 7485 little_endian_store_16(event, 3, con_handle); 7486 event[5] = reason; 7487 hci_emit_event(event, sizeof(event), 1); 7488 } 7489 7490 static void hci_emit_nr_connections_changed(void){ 7491 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7492 uint8_t event[3]; 7493 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7494 event[1] = sizeof(event) - 2u; 7495 event[2] = nr_hci_connections(); 7496 hci_emit_event(event, sizeof(event), 1); 7497 } 7498 7499 static void hci_emit_hci_open_failed(void){ 7500 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7501 uint8_t event[2]; 7502 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7503 event[1] = sizeof(event) - 2u; 7504 hci_emit_event(event, sizeof(event), 1); 7505 } 7506 7507 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7508 log_info("hci_emit_dedicated_bonding_result %u ", status); 7509 uint8_t event[9]; 7510 int pos = 0; 7511 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7512 event[pos++] = sizeof(event) - 2u; 7513 event[pos++] = status; 7514 reverse_bd_addr(address, &event[pos]); 7515 hci_emit_event(event, sizeof(event), 1); 7516 } 7517 7518 7519 #ifdef ENABLE_CLASSIC 7520 7521 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7522 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7523 uint8_t event[5]; 7524 int pos = 0; 7525 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7526 event[pos++] = sizeof(event) - 2; 7527 little_endian_store_16(event, 2, con_handle); 7528 pos += 2; 7529 event[pos++] = level; 7530 hci_emit_event(event, sizeof(event), 1); 7531 } 7532 7533 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7534 if (!connection) return LEVEL_0; 7535 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7536 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7537 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7538 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7539 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7540 // LEVEL 4 always requires 128 bit encrytion key size 7541 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7542 security_level = LEVEL_3; 7543 } 7544 return security_level; 7545 } 7546 7547 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7548 uint8_t event[4]; 7549 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7550 event[1] = sizeof(event) - 2; 7551 event[2] = discoverable; 7552 event[3] = connectable; 7553 hci_emit_event(event, sizeof(event), 1); 7554 } 7555 7556 // query if remote side supports eSCO 7557 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7558 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7559 if (!connection) return false; 7560 return (connection->remote_supported_features[0] & 1) != 0; 7561 } 7562 7563 static bool hci_ssp_supported(hci_connection_t * connection){ 7564 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7565 return (connection->bonding_flags & mask) == mask; 7566 } 7567 7568 // query if remote side supports SSP 7569 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7570 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7571 if (!connection) return false; 7572 return hci_ssp_supported(connection) ? 1 : 0; 7573 } 7574 7575 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7576 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7577 } 7578 7579 /** 7580 * Check if remote supported features query has completed 7581 */ 7582 bool hci_remote_features_available(hci_con_handle_t handle){ 7583 hci_connection_t * connection = hci_connection_for_handle(handle); 7584 if (!connection) return false; 7585 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7586 } 7587 7588 /** 7589 * Trigger remote supported features query 7590 */ 7591 7592 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7593 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7594 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7595 } 7596 } 7597 7598 void hci_remote_features_query(hci_con_handle_t con_handle){ 7599 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7600 if (!connection) return; 7601 hci_trigger_remote_features_for_connection(connection); 7602 hci_run(); 7603 } 7604 7605 // GAP API 7606 /** 7607 * @bbrief enable/disable bonding. default is enabled 7608 * @praram enabled 7609 */ 7610 void gap_set_bondable_mode(int enable){ 7611 hci_stack->bondable = enable ? 1 : 0; 7612 } 7613 /** 7614 * @brief Get bondable mode. 7615 * @return 1 if bondable 7616 */ 7617 int gap_get_bondable_mode(void){ 7618 return hci_stack->bondable; 7619 } 7620 7621 /** 7622 * @brief map link keys to security levels 7623 */ 7624 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7625 switch (link_key_type){ 7626 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7627 return LEVEL_4; 7628 case COMBINATION_KEY: 7629 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7630 return LEVEL_3; 7631 default: 7632 return LEVEL_2; 7633 } 7634 } 7635 7636 /** 7637 * @brief map link keys to secure connection yes/no 7638 */ 7639 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7640 switch (link_key_type){ 7641 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7642 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7643 return true; 7644 default: 7645 return false; 7646 } 7647 } 7648 7649 /** 7650 * @brief map link keys to authenticated 7651 */ 7652 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7653 switch (link_key_type){ 7654 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7655 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7656 return true; 7657 default: 7658 return false; 7659 } 7660 } 7661 7662 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7663 log_info("gap_mitm_protection_required_for_security_level %u", level); 7664 return level > LEVEL_2; 7665 } 7666 7667 /** 7668 * @brief get current security level 7669 */ 7670 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7671 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7672 if (!connection) return LEVEL_0; 7673 return gap_security_level_for_connection(connection); 7674 } 7675 7676 /** 7677 * @brief request connection to device to 7678 * @result GAP_AUTHENTICATION_RESULT 7679 */ 7680 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7681 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7682 if (!connection){ 7683 hci_emit_security_level(con_handle, LEVEL_0); 7684 return; 7685 } 7686 7687 btstack_assert(hci_is_le_connection(connection) == false); 7688 7689 // 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) 7690 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7691 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7692 requested_level = LEVEL_4; 7693 } 7694 7695 gap_security_level_t current_level = gap_security_level(con_handle); 7696 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7697 requested_level, connection->requested_security_level, current_level); 7698 7699 // authentication active if authentication request was sent or planned level > 0 7700 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7701 if (authentication_active){ 7702 // authentication already active 7703 if (connection->requested_security_level < requested_level){ 7704 // increase requested level as new level is higher 7705 // TODO: handle re-authentication when done 7706 connection->requested_security_level = requested_level; 7707 } 7708 } else { 7709 // no request active, notify if security sufficient 7710 if (requested_level <= current_level){ 7711 hci_emit_security_level(con_handle, current_level); 7712 return; 7713 } 7714 7715 // store request 7716 connection->requested_security_level = requested_level; 7717 7718 // start to authenticate connection 7719 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7720 7721 // request remote features if not already active, also trigger hci_run 7722 hci_remote_features_query(con_handle); 7723 } 7724 } 7725 7726 /** 7727 * @brief start dedicated bonding with device. disconnect after bonding 7728 * @param device 7729 * @param request MITM protection 7730 * @result GAP_DEDICATED_BONDING_COMPLETE 7731 */ 7732 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7733 7734 // create connection state machine 7735 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7736 7737 if (!connection){ 7738 return BTSTACK_MEMORY_ALLOC_FAILED; 7739 } 7740 7741 // delete linkn key 7742 gap_drop_link_key_for_bd_addr(device); 7743 7744 // configure LEVEL_2/3, dedicated bonding 7745 connection->state = SEND_CREATE_CONNECTION; 7746 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7747 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7748 connection->bonding_flags = BONDING_DEDICATED; 7749 7750 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7751 7752 // handle: connnection failure (connection complete != ok) 7753 // handle: authentication failure 7754 // handle: disconnect on done 7755 7756 hci_run(); 7757 7758 return 0; 7759 } 7760 7761 void gap_set_local_name(const char * local_name){ 7762 hci_stack->local_name = local_name; 7763 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7764 // also update EIR if not set by user 7765 if (hci_stack->eir_data == NULL){ 7766 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7767 } 7768 hci_run(); 7769 } 7770 #endif 7771 7772 7773 #ifdef ENABLE_BLE 7774 7775 #ifdef ENABLE_LE_CENTRAL 7776 void gap_start_scan(void){ 7777 hci_stack->le_scanning_enabled = true; 7778 hci_run(); 7779 } 7780 7781 void gap_stop_scan(void){ 7782 hci_stack->le_scanning_enabled = false; 7783 hci_run(); 7784 } 7785 7786 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7787 hci_stack->le_scan_type = scan_type; 7788 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7789 hci_stack->le_scan_interval = scan_interval; 7790 hci_stack->le_scan_window = scan_window; 7791 hci_stack->le_scanning_param_update = true; 7792 hci_run(); 7793 } 7794 7795 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7796 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 7797 } 7798 7799 void gap_set_scan_duplicate_filter(bool enabled){ 7800 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 7801 } 7802 7803 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 7804 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 7805 if (!conn){ 7806 // disallow if le connection is already outgoing 7807 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7808 log_error("le connection already active"); 7809 return ERROR_CODE_COMMAND_DISALLOWED; 7810 } 7811 7812 log_info("gap_connect: no connection exists yet, creating context"); 7813 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 7814 if (!conn){ 7815 // notify client that alloc failed 7816 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7817 log_info("gap_connect: failed to alloc hci_connection_t"); 7818 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 7819 } 7820 7821 // set le connecting state 7822 if (hci_is_le_connection_type(addr_type)){ 7823 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 7824 } 7825 7826 conn->state = SEND_CREATE_CONNECTION; 7827 log_info("gap_connect: send create connection next"); 7828 hci_run(); 7829 return ERROR_CODE_SUCCESS; 7830 } 7831 7832 if (!hci_is_le_connection(conn) || 7833 (conn->state == SEND_CREATE_CONNECTION) || 7834 (conn->state == SENT_CREATE_CONNECTION)) { 7835 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 7836 log_error("gap_connect: classic connection or connect is already being created"); 7837 return GATT_CLIENT_IN_WRONG_STATE; 7838 } 7839 7840 // check if connection was just disconnected 7841 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7842 log_info("gap_connect: send create connection (again)"); 7843 conn->state = SEND_CREATE_CONNECTION; 7844 hci_run(); 7845 return ERROR_CODE_SUCCESS; 7846 } 7847 7848 log_info("gap_connect: context exists with state %u", conn->state); 7849 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 7850 hci_run(); 7851 return ERROR_CODE_SUCCESS; 7852 } 7853 7854 // @assumption: only a single outgoing LE Connection exists 7855 static hci_connection_t * gap_get_outgoing_connection(void){ 7856 btstack_linked_item_t *it; 7857 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7858 hci_connection_t * conn = (hci_connection_t *) it; 7859 if (!hci_is_le_connection(conn)) continue; 7860 switch (conn->state){ 7861 case SEND_CREATE_CONNECTION: 7862 case SENT_CREATE_CONNECTION: 7863 return conn; 7864 default: 7865 break; 7866 }; 7867 } 7868 return NULL; 7869 } 7870 7871 uint8_t gap_connect_cancel(void){ 7872 hci_connection_t * conn; 7873 switch (hci_stack->le_connecting_request){ 7874 case LE_CONNECTING_IDLE: 7875 break; 7876 case LE_CONNECTING_WHITELIST: 7877 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7878 hci_run(); 7879 break; 7880 case LE_CONNECTING_DIRECT: 7881 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7882 conn = gap_get_outgoing_connection(); 7883 if (conn == NULL){ 7884 hci_run(); 7885 } else { 7886 switch (conn->state){ 7887 case SEND_CREATE_CONNECTION: 7888 // skip sending create connection and emit event instead 7889 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 7890 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 7891 btstack_memory_hci_connection_free( conn ); 7892 break; 7893 case SENT_CREATE_CONNECTION: 7894 // let hci_run_general_gap_le cancel outgoing connection 7895 hci_run(); 7896 break; 7897 default: 7898 break; 7899 } 7900 } 7901 break; 7902 default: 7903 btstack_unreachable(); 7904 break; 7905 } 7906 return ERROR_CODE_SUCCESS; 7907 } 7908 7909 /** 7910 * @brief Set connection parameters for outgoing connections 7911 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 7912 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 7913 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 7914 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 7915 * @param conn_latency, default: 4 7916 * @param supervision_timeout (unit: 10ms), default: 720 ms 7917 * @param min_ce_length (unit: 0.625ms), default: 10 ms 7918 * @param max_ce_length (unit: 0.625ms), default: 30 ms 7919 */ 7920 7921 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 7922 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 7923 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 7924 hci_stack->le_connection_scan_interval = conn_scan_interval; 7925 hci_stack->le_connection_scan_window = conn_scan_window; 7926 hci_stack->le_connection_interval_min = conn_interval_min; 7927 hci_stack->le_connection_interval_max = conn_interval_max; 7928 hci_stack->le_connection_latency = conn_latency; 7929 hci_stack->le_supervision_timeout = supervision_timeout; 7930 hci_stack->le_minimum_ce_length = min_ce_length; 7931 hci_stack->le_maximum_ce_length = max_ce_length; 7932 } 7933 #endif 7934 7935 /** 7936 * @brief Updates the connection parameters for a given LE connection 7937 * @param handle 7938 * @param conn_interval_min (unit: 1.25ms) 7939 * @param conn_interval_max (unit: 1.25ms) 7940 * @param conn_latency 7941 * @param supervision_timeout (unit: 10ms) 7942 * @return 0 if ok 7943 */ 7944 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7945 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7946 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7947 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7948 connection->le_conn_interval_min = conn_interval_min; 7949 connection->le_conn_interval_max = conn_interval_max; 7950 connection->le_conn_latency = conn_latency; 7951 connection->le_supervision_timeout = supervision_timeout; 7952 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 7953 hci_run(); 7954 return 0; 7955 } 7956 7957 /** 7958 * @brief Request an update of the connection parameter for a given LE connection 7959 * @param handle 7960 * @param conn_interval_min (unit: 1.25ms) 7961 * @param conn_interval_max (unit: 1.25ms) 7962 * @param conn_latency 7963 * @param supervision_timeout (unit: 10ms) 7964 * @return 0 if ok 7965 */ 7966 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7967 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7968 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7969 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7970 connection->le_conn_interval_min = conn_interval_min; 7971 connection->le_conn_interval_max = conn_interval_max; 7972 connection->le_conn_latency = conn_latency; 7973 connection->le_supervision_timeout = supervision_timeout; 7974 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 7975 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 7976 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 7977 return 0; 7978 } 7979 7980 #ifdef ENABLE_LE_PERIPHERAL 7981 7982 /** 7983 * @brief Set Advertisement Data 7984 * @param advertising_data_length 7985 * @param advertising_data (max 31 octets) 7986 * @note data is not copied, pointer has to stay valid 7987 */ 7988 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 7989 hci_stack->le_advertisements_data_len = advertising_data_length; 7990 hci_stack->le_advertisements_data = advertising_data; 7991 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7992 hci_run(); 7993 } 7994 7995 /** 7996 * @brief Set Scan Response Data 7997 * @param advertising_data_length 7998 * @param advertising_data (max 31 octets) 7999 * @note data is not copied, pointer has to stay valid 8000 */ 8001 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8002 hci_stack->le_scan_response_data_len = scan_response_data_length; 8003 hci_stack->le_scan_response_data = scan_response_data; 8004 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8005 hci_run(); 8006 } 8007 8008 /** 8009 * @brief Set Advertisement Parameters 8010 * @param adv_int_min 8011 * @param adv_int_max 8012 * @param adv_type 8013 * @param direct_address_type 8014 * @param direct_address 8015 * @param channel_map 8016 * @param filter_policy 8017 * 8018 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8019 */ 8020 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8021 uint8_t direct_address_typ, bd_addr_t direct_address, 8022 uint8_t channel_map, uint8_t filter_policy) { 8023 8024 hci_stack->le_advertisements_interval_min = adv_int_min; 8025 hci_stack->le_advertisements_interval_max = adv_int_max; 8026 hci_stack->le_advertisements_type = adv_type; 8027 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8028 hci_stack->le_advertisements_channel_map = channel_map; 8029 hci_stack->le_advertisements_filter_policy = filter_policy; 8030 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8031 6); 8032 8033 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8034 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8035 hci_run(); 8036 } 8037 8038 /** 8039 * @brief Enable/Disable Advertisements 8040 * @param enabled 8041 */ 8042 void gap_advertisements_enable(int enabled){ 8043 if (enabled == 0){ 8044 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8045 } else { 8046 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8047 } 8048 hci_update_advertisements_enabled_for_current_roles(); 8049 hci_run(); 8050 } 8051 8052 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8053 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8054 btstack_linked_list_iterator_t it; 8055 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8056 while (btstack_linked_list_iterator_has_next(&it)){ 8057 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8058 if ( item->advertising_handle == advertising_handle ) { 8059 return item; 8060 } 8061 } 8062 return NULL; 8063 } 8064 8065 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8066 // find free advertisement handle 8067 uint8_t advertisement_handle; 8068 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8069 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8070 } 8071 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8072 // clear 8073 memset(storage, 0, sizeof(le_advertising_set_t)); 8074 // copy params 8075 storage->advertising_handle = advertisement_handle; 8076 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8077 // add to list 8078 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8079 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8080 *out_advertising_handle = advertisement_handle; 8081 // set tasks and start 8082 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8083 hci_run(); 8084 return ERROR_CODE_SUCCESS; 8085 } 8086 8087 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8088 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8089 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8090 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8091 // set tasks and start 8092 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8093 hci_run(); 8094 return ERROR_CODE_SUCCESS; 8095 } 8096 8097 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8098 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8099 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8100 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8101 return ERROR_CODE_SUCCESS; 8102 } 8103 8104 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8105 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8106 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8107 memcpy(advertising_set->random_address, random_address, 6); 8108 // set tasks and start 8109 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8110 hci_run(); 8111 return ERROR_CODE_SUCCESS; 8112 } 8113 8114 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8115 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8116 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8117 advertising_set->adv_data = advertising_data; 8118 advertising_set->adv_data_len = advertising_data_length; 8119 // set tasks and start 8120 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8121 hci_run(); 8122 return ERROR_CODE_SUCCESS; 8123 } 8124 8125 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){ 8126 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8127 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8128 advertising_set->scan_data = scan_response_data; 8129 advertising_set->scan_data_len = scan_response_data_length; 8130 // set tasks and start 8131 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8132 hci_run(); 8133 return ERROR_CODE_SUCCESS; 8134 } 8135 8136 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8137 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8138 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8139 advertising_set->enable_timeout = timeout; 8140 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8141 // set tasks and start 8142 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8143 hci_run(); 8144 return ERROR_CODE_SUCCESS; 8145 } 8146 8147 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8148 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8149 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8150 // set tasks and start 8151 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8152 hci_run(); 8153 return ERROR_CODE_SUCCESS; 8154 } 8155 8156 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8157 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8158 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8159 // set tasks and start 8160 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8161 hci_run(); 8162 return ERROR_CODE_SUCCESS; 8163 } 8164 8165 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8166 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8167 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8168 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8169 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8170 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8171 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8172 // set tasks and start 8173 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8174 hci_run(); 8175 return ERROR_CODE_SUCCESS; 8176 } 8177 8178 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8179 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8180 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8181 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8182 return ERROR_CODE_SUCCESS; 8183 } 8184 8185 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8186 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8187 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8188 advertising_set->periodic_data = periodic_data; 8189 advertising_set->periodic_data_len = periodic_data_length; 8190 // set tasks and start 8191 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8192 hci_run(); 8193 return ERROR_CODE_SUCCESS; 8194 } 8195 8196 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8197 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8198 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8199 // set tasks and start 8200 advertising_set->periodic_include_adi = include_adi; 8201 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8202 hci_run(); 8203 return ERROR_CODE_SUCCESS; 8204 } 8205 8206 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8207 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8208 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8209 // set tasks and start 8210 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8211 hci_run(); 8212 return ERROR_CODE_SUCCESS; 8213 } 8214 8215 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8216 hci_stack->le_past_mode = mode; 8217 hci_stack->le_past_skip = skip; 8218 hci_stack->le_past_sync_timeout = sync_timeout; 8219 hci_stack->le_past_cte_type = cte_type; 8220 hci_stack->le_past_set_default_params = true; 8221 hci_run(); 8222 return ERROR_CODE_SUCCESS; 8223 } 8224 8225 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8226 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8227 if (hci_connection == NULL){ 8228 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8229 } 8230 hci_connection->le_past_sync_handle = sync_handle; 8231 hci_connection->le_past_service_data = service_data; 8232 hci_run(); 8233 return ERROR_CODE_SUCCESS; 8234 } 8235 8236 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8237 8238 #endif 8239 8240 #endif 8241 8242 void hci_le_set_own_address_type(uint8_t own_address_type){ 8243 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8244 if (own_address_type == hci_stack->le_own_addr_type) return; 8245 hci_stack->le_own_addr_type = own_address_type; 8246 8247 #ifdef ENABLE_LE_PERIPHERAL 8248 // update advertisement parameters, too 8249 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8250 hci_run(); 8251 #endif 8252 #ifdef ENABLE_LE_CENTRAL 8253 // note: we don't update scan parameters or modify ongoing connection attempts 8254 #endif 8255 } 8256 8257 void hci_le_random_address_set(const bd_addr_t random_address){ 8258 memcpy(hci_stack->le_random_address, random_address, 6); 8259 hci_stack->le_random_address_set = true; 8260 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8261 hci_run(); 8262 } 8263 8264 #endif 8265 8266 uint8_t gap_disconnect(hci_con_handle_t handle){ 8267 hci_connection_t * conn = hci_connection_for_handle(handle); 8268 if (!conn){ 8269 hci_emit_disconnection_complete(handle, 0); 8270 return 0; 8271 } 8272 // ignore if already disconnected 8273 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8274 return 0; 8275 } 8276 conn->state = SEND_DISCONNECT; 8277 hci_run(); 8278 return 0; 8279 } 8280 8281 int gap_read_rssi(hci_con_handle_t con_handle){ 8282 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8283 if (hci_connection == NULL) return 0; 8284 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8285 hci_run(); 8286 return 1; 8287 } 8288 8289 /** 8290 * @brief Get connection type 8291 * @param con_handle 8292 * @result connection_type 8293 */ 8294 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8295 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8296 if (!conn) return GAP_CONNECTION_INVALID; 8297 switch (conn->address_type){ 8298 case BD_ADDR_TYPE_LE_PUBLIC: 8299 case BD_ADDR_TYPE_LE_RANDOM: 8300 return GAP_CONNECTION_LE; 8301 case BD_ADDR_TYPE_SCO: 8302 return GAP_CONNECTION_SCO; 8303 case BD_ADDR_TYPE_ACL: 8304 return GAP_CONNECTION_ACL; 8305 default: 8306 return GAP_CONNECTION_INVALID; 8307 } 8308 } 8309 8310 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8311 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8312 if (!conn) return HCI_ROLE_INVALID; 8313 return (hci_role_t) conn->role; 8314 } 8315 8316 8317 #ifdef ENABLE_CLASSIC 8318 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8319 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8320 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8321 conn->request_role = role; 8322 hci_run(); 8323 return ERROR_CODE_SUCCESS; 8324 } 8325 #endif 8326 8327 #ifdef ENABLE_BLE 8328 8329 uint8_t gap_le_set_phy(hci_con_handle_t con_handle, uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint8_t phy_options){ 8330 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8331 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8332 8333 conn->le_phy_update_all_phys = all_phys; 8334 conn->le_phy_update_tx_phys = tx_phys; 8335 conn->le_phy_update_rx_phys = rx_phys; 8336 conn->le_phy_update_phy_options = phy_options; 8337 8338 hci_run(); 8339 8340 return 0; 8341 } 8342 8343 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8344 // check if already in list 8345 btstack_linked_list_iterator_t it; 8346 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8347 while (btstack_linked_list_iterator_has_next(&it)) { 8348 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8349 if (entry->address_type != address_type) { 8350 continue; 8351 } 8352 if (memcmp(entry->address, address, 6) != 0) { 8353 continue; 8354 } 8355 // disallow if already scheduled to add 8356 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 8357 return ERROR_CODE_COMMAND_DISALLOWED; 8358 } 8359 // still on controller, but scheduled to remove -> re-add 8360 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 8361 return ERROR_CODE_SUCCESS; 8362 } 8363 // alloc and add to list 8364 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8365 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8366 entry->address_type = address_type; 8367 (void)memcpy(entry->address, address, 6); 8368 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8369 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8370 return ERROR_CODE_SUCCESS; 8371 } 8372 8373 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8374 btstack_linked_list_iterator_t it; 8375 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8376 while (btstack_linked_list_iterator_has_next(&it)){ 8377 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8378 if (entry->address_type != address_type) { 8379 continue; 8380 } 8381 if (memcmp(entry->address, address, 6) != 0) { 8382 continue; 8383 } 8384 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8385 // remove from controller if already present 8386 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8387 } else { 8388 // directly remove entry from whitelist 8389 btstack_linked_list_iterator_remove(&it); 8390 btstack_memory_whitelist_entry_free(entry); 8391 } 8392 return ERROR_CODE_SUCCESS; 8393 } 8394 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8395 } 8396 8397 static void hci_whitelist_clear(void){ 8398 btstack_linked_list_iterator_t it; 8399 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8400 while (btstack_linked_list_iterator_has_next(&it)){ 8401 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8402 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8403 // remove from controller if already present 8404 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8405 continue; 8406 } 8407 // directly remove entry from whitelist 8408 btstack_linked_list_iterator_remove(&it); 8409 btstack_memory_whitelist_entry_free(entry); 8410 } 8411 } 8412 8413 // free all entries unconditionally 8414 static void hci_whitelist_free(void){ 8415 btstack_linked_list_iterator_t lit; 8416 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 8417 while (btstack_linked_list_iterator_has_next(&lit)){ 8418 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 8419 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 8420 btstack_memory_whitelist_entry_free(entry); 8421 } 8422 } 8423 8424 /** 8425 * @brief Clear Whitelist 8426 * @return 0 if ok 8427 */ 8428 uint8_t gap_whitelist_clear(void){ 8429 hci_whitelist_clear(); 8430 hci_run(); 8431 return ERROR_CODE_SUCCESS; 8432 } 8433 8434 /** 8435 * @brief Add Device to Whitelist 8436 * @param address_typ 8437 * @param address 8438 * @return 0 if ok 8439 */ 8440 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8441 uint8_t status = hci_whitelist_add(address_type, address); 8442 if (status){ 8443 return status; 8444 } 8445 hci_run(); 8446 return ERROR_CODE_SUCCESS; 8447 } 8448 8449 /** 8450 * @brief Remove Device from Whitelist 8451 * @param address_typ 8452 * @param address 8453 * @return 0 if ok 8454 */ 8455 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8456 uint8_t status = hci_whitelist_remove(address_type, address); 8457 if (status){ 8458 return status; 8459 } 8460 hci_run(); 8461 return ERROR_CODE_SUCCESS; 8462 } 8463 8464 #ifdef ENABLE_LE_CENTRAL 8465 /** 8466 * @brief Connect with Whitelist 8467 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8468 * @return - if ok 8469 */ 8470 uint8_t gap_connect_with_whitelist(void){ 8471 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8472 return ERROR_CODE_COMMAND_DISALLOWED; 8473 } 8474 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8475 hci_run(); 8476 return ERROR_CODE_SUCCESS; 8477 } 8478 8479 /** 8480 * @brief Auto Connection Establishment - Start Connecting to device 8481 * @param address_typ 8482 * @param address 8483 * @return 0 if ok 8484 */ 8485 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8486 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8487 return ERROR_CODE_COMMAND_DISALLOWED; 8488 } 8489 8490 uint8_t status = hci_whitelist_add(address_type, address); 8491 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8492 return status; 8493 } 8494 8495 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8496 8497 hci_run(); 8498 return ERROR_CODE_SUCCESS; 8499 } 8500 8501 /** 8502 * @brief Auto Connection Establishment - Stop Connecting to device 8503 * @param address_typ 8504 * @param address 8505 * @return 0 if ok 8506 */ 8507 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8508 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8509 return ERROR_CODE_COMMAND_DISALLOWED; 8510 } 8511 8512 hci_whitelist_remove(address_type, address); 8513 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8514 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8515 } 8516 hci_run(); 8517 return 0; 8518 } 8519 8520 /** 8521 * @brief Auto Connection Establishment - Stop everything 8522 * @note Convenience function to stop all active auto connection attempts 8523 */ 8524 uint8_t gap_auto_connection_stop_all(void){ 8525 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8526 return ERROR_CODE_COMMAND_DISALLOWED; 8527 } 8528 hci_whitelist_clear(); 8529 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8530 hci_run(); 8531 return ERROR_CODE_SUCCESS; 8532 } 8533 8534 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8535 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8536 if (!conn) return 0; 8537 return conn->le_connection_interval; 8538 } 8539 #endif 8540 #endif 8541 8542 #ifdef ENABLE_CLASSIC 8543 /** 8544 * @brief Set Extended Inquiry Response data 8545 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8546 * @note has to be done before stack starts up 8547 */ 8548 void gap_set_extended_inquiry_response(const uint8_t * data){ 8549 hci_stack->eir_data = data; 8550 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8551 hci_run(); 8552 } 8553 8554 /** 8555 * @brief Start GAP Classic Inquiry 8556 * @param duration in 1.28s units 8557 * @return 0 if ok 8558 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8559 */ 8560 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8561 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8562 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8563 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8564 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8565 } 8566 hci_stack->inquiry_state = duration_in_1280ms_units; 8567 hci_stack->inquiry_max_period_length = 0; 8568 hci_stack->inquiry_min_period_length = 0; 8569 hci_run(); 8570 return 0; 8571 } 8572 8573 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8574 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8575 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8576 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8577 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8578 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8579 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8580 8581 hci_stack->inquiry_state = duration; 8582 hci_stack->inquiry_max_period_length = max_period_length; 8583 hci_stack->inquiry_min_period_length = min_period_length; 8584 hci_run(); 8585 return 0; 8586 } 8587 8588 /** 8589 * @brief Stop GAP Classic Inquiry 8590 * @return 0 if ok 8591 */ 8592 int gap_inquiry_stop(void){ 8593 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8594 // emit inquiry complete event, before it even started 8595 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8596 hci_emit_event(event, sizeof(event), 1); 8597 return 0; 8598 } 8599 switch (hci_stack->inquiry_state){ 8600 case GAP_INQUIRY_STATE_ACTIVE: 8601 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8602 hci_run(); 8603 return ERROR_CODE_SUCCESS; 8604 case GAP_INQUIRY_STATE_PERIODIC: 8605 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8606 hci_run(); 8607 return ERROR_CODE_SUCCESS; 8608 default: 8609 return ERROR_CODE_COMMAND_DISALLOWED; 8610 } 8611 } 8612 8613 void gap_inquiry_set_lap(uint32_t lap){ 8614 hci_stack->inquiry_lap = lap; 8615 } 8616 8617 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8618 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8619 hci_stack->inquiry_scan_window = inquiry_scan_window; 8620 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8621 hci_run(); 8622 } 8623 8624 8625 /** 8626 * @brief Remote Name Request 8627 * @param addr 8628 * @param page_scan_repetition_mode 8629 * @param clock_offset only used when bit 15 is set 8630 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8631 */ 8632 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8633 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8634 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8635 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8636 hci_stack->remote_name_clock_offset = clock_offset; 8637 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8638 hci_run(); 8639 return 0; 8640 } 8641 8642 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8643 hci_stack->gap_pairing_state = state; 8644 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8645 hci_run(); 8646 return 0; 8647 } 8648 8649 /** 8650 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8651 * @param addr 8652 * @param pin_data 8653 * @param pin_len 8654 * @return 0 if ok 8655 */ 8656 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8657 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8658 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8659 hci_stack->gap_pairing_pin_len = pin_len; 8660 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8661 } 8662 8663 /** 8664 * @brief Legacy Pairing Pin Code Response 8665 * @param addr 8666 * @param pin 8667 * @return 0 if ok 8668 */ 8669 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8670 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8671 } 8672 8673 /** 8674 * @brief Abort Legacy Pairing 8675 * @param addr 8676 * @param pin 8677 * @return 0 if ok 8678 */ 8679 int gap_pin_code_negative(bd_addr_t addr){ 8680 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8681 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8682 } 8683 8684 /** 8685 * @brief SSP Passkey Response 8686 * @param addr 8687 * @param passkey 8688 * @return 0 if ok 8689 */ 8690 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8691 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8692 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8693 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8694 } 8695 8696 /** 8697 * @brief Abort SSP Passkey Entry/Pairing 8698 * @param addr 8699 * @param pin 8700 * @return 0 if ok 8701 */ 8702 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8703 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8704 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8705 } 8706 8707 /** 8708 * @brief Accept SSP Numeric Comparison 8709 * @param addr 8710 * @param passkey 8711 * @return 0 if ok 8712 */ 8713 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8714 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8715 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8716 } 8717 8718 /** 8719 * @brief Abort SSP Numeric Comparison/Pairing 8720 * @param addr 8721 * @param pin 8722 * @return 0 if ok 8723 */ 8724 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8725 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8726 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8727 } 8728 8729 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8730 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8731 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8732 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8733 connectionSetAuthenticationFlags(conn, flag); 8734 hci_run(); 8735 return ERROR_CODE_SUCCESS; 8736 } 8737 #endif 8738 8739 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8740 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8741 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8742 } 8743 8744 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8745 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8746 } 8747 #endif 8748 8749 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8750 /** 8751 * @brief Report Remote OOB Data 8752 * @param bd_addr 8753 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8754 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8755 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8756 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8757 */ 8758 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){ 8759 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8760 if (connection == NULL) { 8761 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8762 } 8763 connection->classic_oob_c_192 = c_192; 8764 connection->classic_oob_r_192 = r_192; 8765 8766 // ignore P-256 if not supported by us 8767 if (hci_stack->secure_connections_active){ 8768 connection->classic_oob_c_256 = c_256; 8769 connection->classic_oob_r_256 = r_256; 8770 } 8771 8772 return ERROR_CODE_SUCCESS; 8773 } 8774 /** 8775 * @brief Generate new OOB data 8776 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 8777 */ 8778 void gap_ssp_generate_oob_data(void){ 8779 hci_stack->classic_read_local_oob_data = true; 8780 hci_run(); 8781 } 8782 8783 #endif 8784 8785 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 8786 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 8787 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8788 if (connection == NULL) { 8789 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8790 } 8791 8792 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 8793 connection->link_key_type = type; 8794 8795 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 8796 } 8797 8798 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 8799 /** 8800 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 8801 * @param inquiry_mode see bluetooth_defines.h 8802 */ 8803 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 8804 hci_stack->inquiry_mode = inquiry_mode; 8805 } 8806 8807 /** 8808 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 8809 */ 8810 void hci_set_sco_voice_setting(uint16_t voice_setting){ 8811 hci_stack->sco_voice_setting = voice_setting; 8812 } 8813 8814 /** 8815 * @brief Get SCO Voice Setting 8816 * @return current voice setting 8817 */ 8818 uint16_t hci_get_sco_voice_setting(void){ 8819 return hci_stack->sco_voice_setting; 8820 } 8821 8822 static int hci_have_usb_transport(void){ 8823 if (!hci_stack->hci_transport) return 0; 8824 const char * transport_name = hci_stack->hci_transport->name; 8825 if (!transport_name) return 0; 8826 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 8827 } 8828 8829 /** @brief Get SCO packet length for current SCO Voice setting 8830 * @note Using SCO packets of the exact length is required for USB transfer 8831 * @return Length of SCO packets in bytes (not audio frames) 8832 */ 8833 uint16_t hci_get_sco_packet_length(void){ 8834 uint16_t sco_packet_length = 0; 8835 8836 #ifdef ENABLE_SCO_OVER_HCI 8837 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8838 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8839 8840 if (hci_have_usb_transport()){ 8841 // see Core Spec for H2 USB Transfer. 8842 // 3 byte SCO header + 24 bytes per connection 8843 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 8844 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 8845 } else { 8846 // 3 byte SCO header + SCO packet size over the air (60 bytes) 8847 sco_packet_length = 3 + 60 * multiplier; 8848 // assert that it still fits inside an SCO buffer 8849 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 8850 sco_packet_length = 3 + 60; 8851 } 8852 } 8853 #endif 8854 8855 #ifdef HAVE_SCO_TRANSPORT 8856 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8857 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8858 sco_packet_length = 3 + 60 * multiplier; 8859 #endif 8860 return sco_packet_length; 8861 } 8862 8863 /** 8864 * @brief Sets the master/slave policy 8865 * @param policy (0: attempt to become master, 1: let connecting device decide) 8866 */ 8867 void hci_set_master_slave_policy(uint8_t policy){ 8868 hci_stack->master_slave_policy = policy; 8869 } 8870 8871 #endif 8872 8873 HCI_STATE hci_get_state(void){ 8874 return hci_stack->state; 8875 } 8876 8877 #ifdef ENABLE_CLASSIC 8878 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 8879 hci_stack->gap_classic_accept_callback = accept_callback; 8880 } 8881 #endif 8882 8883 /** 8884 * @brief Set callback for Bluetooth Hardware Error 8885 */ 8886 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 8887 hci_stack->hardware_error_callback = fn; 8888 } 8889 8890 void hci_disconnect_all(void){ 8891 btstack_linked_list_iterator_t it; 8892 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8893 while (btstack_linked_list_iterator_has_next(&it)){ 8894 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8895 if (con->state == SENT_DISCONNECT) continue; 8896 con->state = SEND_DISCONNECT; 8897 } 8898 hci_run(); 8899 } 8900 8901 uint16_t hci_get_manufacturer(void){ 8902 return hci_stack->manufacturer; 8903 } 8904 8905 #ifdef ENABLE_BLE 8906 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 8907 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 8908 if (!hci_con) return NULL; 8909 return &hci_con->sm_connection; 8910 } 8911 8912 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 8913 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 8914 #endif 8915 8916 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 8917 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8918 if (hci_connection == NULL) return 0; 8919 if (hci_is_le_connection(hci_connection)){ 8920 #ifdef ENABLE_BLE 8921 sm_connection_t * sm_conn = &hci_connection->sm_connection; 8922 if (sm_conn->sm_connection_encrypted) { 8923 return sm_conn->sm_actual_encryption_key_size; 8924 } 8925 #endif 8926 } else { 8927 #ifdef ENABLE_CLASSIC 8928 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 8929 return hci_connection->encryption_key_size; 8930 } 8931 #endif 8932 } 8933 return 0; 8934 } 8935 8936 bool gap_authenticated(hci_con_handle_t con_handle){ 8937 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8938 if (hci_connection == NULL) return false; 8939 8940 switch (hci_connection->address_type){ 8941 #ifdef ENABLE_BLE 8942 case BD_ADDR_TYPE_LE_PUBLIC: 8943 case BD_ADDR_TYPE_LE_RANDOM: 8944 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 8945 return hci_connection->sm_connection.sm_connection_authenticated != 0; 8946 #endif 8947 #ifdef ENABLE_CLASSIC 8948 case BD_ADDR_TYPE_SCO: 8949 case BD_ADDR_TYPE_ACL: 8950 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 8951 #endif 8952 default: 8953 return false; 8954 } 8955 } 8956 8957 bool gap_secure_connection(hci_con_handle_t con_handle){ 8958 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8959 if (hci_connection == NULL) return 0; 8960 8961 switch (hci_connection->address_type){ 8962 #ifdef ENABLE_BLE 8963 case BD_ADDR_TYPE_LE_PUBLIC: 8964 case BD_ADDR_TYPE_LE_RANDOM: 8965 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 8966 return hci_connection->sm_connection.sm_connection_sc != 0; 8967 #endif 8968 #ifdef ENABLE_CLASSIC 8969 case BD_ADDR_TYPE_SCO: 8970 case BD_ADDR_TYPE_ACL: 8971 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 8972 #endif 8973 default: 8974 return false; 8975 } 8976 } 8977 8978 bool gap_bonded(hci_con_handle_t con_handle){ 8979 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8980 if (hci_connection == NULL) return 0; 8981 8982 #ifdef ENABLE_CLASSIC 8983 link_key_t link_key; 8984 link_key_type_t link_key_type; 8985 #endif 8986 switch (hci_connection->address_type){ 8987 #ifdef ENABLE_BLE 8988 case BD_ADDR_TYPE_LE_PUBLIC: 8989 case BD_ADDR_TYPE_LE_RANDOM: 8990 return hci_connection->sm_connection.sm_le_db_index >= 0; 8991 #endif 8992 #ifdef ENABLE_CLASSIC 8993 case BD_ADDR_TYPE_SCO: 8994 case BD_ADDR_TYPE_ACL: 8995 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 8996 #endif 8997 default: 8998 return false; 8999 } 9000 } 9001 9002 #ifdef ENABLE_BLE 9003 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9004 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9005 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9006 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9007 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9008 return sm_conn->sm_connection_authorization_state; 9009 } 9010 #endif 9011 9012 #ifdef ENABLE_CLASSIC 9013 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){ 9014 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9015 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9016 conn->sniff_min_interval = sniff_min_interval; 9017 conn->sniff_max_interval = sniff_max_interval; 9018 conn->sniff_attempt = sniff_attempt; 9019 conn->sniff_timeout = sniff_timeout; 9020 hci_run(); 9021 return 0; 9022 } 9023 9024 /** 9025 * @brief Exit Sniff mode 9026 * @param con_handle 9027 @ @return 0 if ok 9028 */ 9029 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9030 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9031 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9032 conn->sniff_min_interval = 0xffff; 9033 hci_run(); 9034 return 0; 9035 } 9036 9037 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){ 9038 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9039 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9040 conn->sniff_subrating_max_latency = max_latency; 9041 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9042 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9043 hci_run(); 9044 return ERROR_CODE_SUCCESS; 9045 } 9046 9047 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){ 9048 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9049 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9050 conn->qos_service_type = service_type; 9051 conn->qos_token_rate = token_rate; 9052 conn->qos_peak_bandwidth = peak_bandwidth; 9053 conn->qos_latency = latency; 9054 conn->qos_delay_variation = delay_variation; 9055 hci_run(); 9056 return ERROR_CODE_SUCCESS; 9057 } 9058 9059 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9060 hci_stack->new_page_scan_interval = page_scan_interval; 9061 hci_stack->new_page_scan_window = page_scan_window; 9062 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9063 hci_run(); 9064 } 9065 9066 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9067 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9068 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9069 hci_run(); 9070 } 9071 9072 void gap_set_page_timeout(uint16_t page_timeout){ 9073 hci_stack->page_timeout = page_timeout; 9074 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9075 hci_run(); 9076 } 9077 9078 #endif 9079 9080 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9081 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9082 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9083 if (le_device_db_index >= le_device_db_max_count()) return; 9084 uint8_t offset = le_device_db_index >> 3; 9085 uint8_t mask = 1 << (le_device_db_index & 7); 9086 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9087 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9088 // note: go back to remove entries, otherwise, a remove + add will skip the add 9089 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9090 } 9091 } 9092 9093 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9094 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9095 if (le_device_db_index >= le_device_db_max_count()) return; 9096 uint8_t offset = le_device_db_index >> 3; 9097 uint8_t mask = 1 << (le_device_db_index & 7); 9098 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9099 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9100 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9101 } 9102 } 9103 9104 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9105 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9106 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9107 } 9108 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9109 // restart le resolving list update 9110 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9111 } 9112 return ERROR_CODE_SUCCESS; 9113 } 9114 #endif 9115 9116 #ifdef ENABLE_BLE 9117 #ifdef ENABLE_LE_CENTRAL 9118 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9119 9120 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9121 // check if already in list 9122 btstack_linked_list_iterator_t it; 9123 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9124 while (btstack_linked_list_iterator_has_next(&it)) { 9125 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9126 if (entry->sid != advertising_sid) { 9127 continue; 9128 } 9129 if (entry->address_type != address_type) { 9130 continue; 9131 } 9132 if (memcmp(entry->address, address, 6) != 0) { 9133 continue; 9134 } 9135 // disallow if already scheduled to add 9136 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9137 return ERROR_CODE_COMMAND_DISALLOWED; 9138 } 9139 // still on controller, but scheduled to remove -> re-add 9140 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9141 return ERROR_CODE_SUCCESS; 9142 } 9143 // alloc and add to list 9144 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9145 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9146 entry->sid = advertising_sid; 9147 entry->address_type = address_type; 9148 (void)memcpy(entry->address, address, 6); 9149 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9150 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9151 return ERROR_CODE_SUCCESS; 9152 } 9153 9154 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9155 btstack_linked_list_iterator_t it; 9156 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9157 while (btstack_linked_list_iterator_has_next(&it)){ 9158 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9159 if (entry->sid != advertising_sid) { 9160 continue; 9161 } 9162 if (entry->address_type != address_type) { 9163 continue; 9164 } 9165 if (memcmp(entry->address, address, 6) != 0) { 9166 continue; 9167 } 9168 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9169 // remove from controller if already present 9170 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9171 } else { 9172 // directly remove entry from whitelist 9173 btstack_linked_list_iterator_remove(&it); 9174 btstack_memory_periodic_advertiser_list_entry_free(entry); 9175 } 9176 return ERROR_CODE_SUCCESS; 9177 } 9178 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9179 } 9180 9181 static void hci_periodic_advertiser_list_clear(void){ 9182 btstack_linked_list_iterator_t it; 9183 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9184 while (btstack_linked_list_iterator_has_next(&it)){ 9185 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9186 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9187 // remove from controller if already present 9188 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9189 continue; 9190 } 9191 // directly remove entry from whitelist 9192 btstack_linked_list_iterator_remove(&it); 9193 btstack_memory_periodic_advertiser_list_entry_free(entry); 9194 } 9195 } 9196 9197 // free all entries unconditionally 9198 static void hci_periodic_advertiser_list_free(void){ 9199 btstack_linked_list_iterator_t lit; 9200 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 9201 while (btstack_linked_list_iterator_has_next(&lit)){ 9202 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 9203 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 9204 btstack_memory_periodic_advertiser_list_entry_free(entry); 9205 } 9206 } 9207 9208 uint8_t gap_periodic_advertiser_list_clear(void){ 9209 hci_periodic_advertiser_list_clear(); 9210 hci_run(); 9211 return ERROR_CODE_SUCCESS; 9212 } 9213 9214 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9215 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9216 if (status){ 9217 return status; 9218 } 9219 hci_run(); 9220 return ERROR_CODE_SUCCESS; 9221 } 9222 9223 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9224 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9225 if (status){ 9226 return status; 9227 } 9228 hci_run(); 9229 return ERROR_CODE_SUCCESS; 9230 } 9231 9232 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9233 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9234 // abort if already active 9235 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9236 return ERROR_CODE_COMMAND_DISALLOWED; 9237 } 9238 // store request 9239 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9240 hci_stack->le_periodic_sync_options = options; 9241 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9242 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9243 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9244 hci_stack->le_periodic_sync_skip = skip; 9245 hci_stack->le_periodic_sync_timeout = sync_timeout; 9246 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9247 9248 hci_run(); 9249 return ERROR_CODE_SUCCESS; 9250 } 9251 9252 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9253 // abort if not requested 9254 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9255 return ERROR_CODE_COMMAND_DISALLOWED; 9256 } 9257 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9258 hci_run(); 9259 return ERROR_CODE_SUCCESS; 9260 } 9261 9262 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9263 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9264 return ERROR_CODE_COMMAND_DISALLOWED; 9265 } 9266 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9267 hci_run(); 9268 return ERROR_CODE_SUCCESS; 9269 } 9270 9271 #endif 9272 #endif 9273 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9274 static uint8_t hci_iso_stream_create(hci_iso_type_t iso_type, hci_con_handle_t con_handle, uint8_t group_id, 9275 hci_iso_stream_state_t state) { 9276 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9277 if (iso_stream == NULL){ 9278 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 9279 } else { 9280 iso_stream->iso_type = iso_type; 9281 iso_stream->state = state; 9282 iso_stream->con_handle = con_handle; 9283 iso_stream->group_id = group_id; 9284 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9285 return ERROR_CODE_SUCCESS; 9286 } 9287 } 9288 9289 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9290 btstack_linked_list_iterator_t it; 9291 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9292 while (btstack_linked_list_iterator_has_next(&it)){ 9293 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9294 if (iso_stream->con_handle == con_handle ) { 9295 return iso_stream; 9296 } 9297 } 9298 return NULL; 9299 } 9300 9301 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9302 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->con_handle, iso_stream->group_id); 9303 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9304 btstack_memory_hci_iso_stream_free(iso_stream); 9305 } 9306 9307 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9308 btstack_linked_list_iterator_t it; 9309 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9310 while (btstack_linked_list_iterator_has_next(&it)){ 9311 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9312 if ((iso_stream->group_id == group_id) && 9313 (iso_stream->iso_type == iso_type)){ 9314 btstack_linked_list_iterator_remove(&it); 9315 btstack_memory_hci_iso_stream_free(iso_stream); 9316 } 9317 } 9318 } 9319 9320 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9321 btstack_linked_list_iterator_t it; 9322 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9323 while (btstack_linked_list_iterator_has_next(&it)){ 9324 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9325 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9326 (iso_stream->group_id == group_id)){ 9327 btstack_linked_list_iterator_remove(&it); 9328 btstack_memory_hci_iso_stream_free(iso_stream); 9329 } 9330 } 9331 } 9332 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9333 btstack_linked_list_iterator_t it; 9334 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9335 while (btstack_linked_list_iterator_has_next(&it)){ 9336 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9337 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9338 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9339 } 9340 } 9341 } 9342 9343 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9344 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9345 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9346 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9347 return (sdu_len_offset + 2 + sdu_len) == size; 9348 } 9349 9350 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9351 if (hci_stack->iso_packet_handler == NULL) { 9352 return; 9353 } 9354 if (size < 4) { 9355 return; 9356 } 9357 9358 // parse header 9359 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9360 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9361 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9362 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9363 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9364 9365 // assert packet is complete 9366 if ((iso_data_len + 4u) != size){ 9367 return; 9368 } 9369 9370 if ((pb_flag & 0x01) == 0){ 9371 if (pb_flag == 0x02){ 9372 // The ISO_Data_Load field contains a header and a complete SDU. 9373 if (hci_iso_sdu_complete(packet, size)) { 9374 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9375 } 9376 } else { 9377 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9378 if (iso_stream == NULL){ 9379 return; 9380 } 9381 if (size > HCI_ISO_PAYLOAD_SIZE){ 9382 return; 9383 } 9384 memcpy(iso_stream->reassembly_buffer, packet, size); 9385 // fix pb_flag 9386 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9387 iso_stream->reassembly_pos = size; 9388 } 9389 } else { 9390 // iso_data_load contains continuation or last fragment of an SDU 9391 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9392 if (ts_flag != 0){ 9393 return; 9394 } 9395 // append fragment 9396 if (iso_stream == NULL){ 9397 return; 9398 } 9399 if (iso_stream->reassembly_pos == 0){ 9400 return; 9401 } 9402 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9403 // reset reassembly buffer 9404 iso_stream->reassembly_pos = 0; 9405 return; 9406 } 9407 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9408 iso_stream->reassembly_pos += iso_data_len; 9409 9410 // deliver if last fragment and SDU complete 9411 if (pb_flag == 0x03){ 9412 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9413 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9414 } 9415 iso_stream->reassembly_pos = 0; 9416 } 9417 } 9418 } 9419 9420 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9421 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9422 uint16_t pos = 0; 9423 event[pos++] = HCI_EVENT_META_GAP; 9424 event[pos++] = 4 + (2 * big->num_bis); 9425 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9426 event[pos++] = status; 9427 event[pos++] = big->big_handle; 9428 event[pos++] = big->num_bis; 9429 uint8_t i; 9430 for (i=0;i<big->num_bis;i++){ 9431 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9432 pos += 2; 9433 } 9434 hci_emit_event(event, pos, 0); 9435 } 9436 9437 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9438 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9439 uint16_t pos = 0; 9440 event[pos++] = HCI_EVENT_META_GAP; 9441 event[pos++] = 4 + (2 * cig->num_cis); 9442 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9443 event[pos++] = status; 9444 event[pos++] = cig->cig_id; 9445 event[pos++] = cig->num_cis; 9446 uint8_t i; 9447 for (i=0;i<cig->num_cis;i++){ 9448 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9449 pos += 2; 9450 } 9451 hci_emit_event(event, pos, 0); 9452 } 9453 9454 static void 9455 hci_emit_cis_created(uint8_t cig_id, hci_con_handle_t cis_con_handle, uint8_t status) { 9456 uint8_t event [7]; 9457 uint16_t pos = 0; 9458 event[pos++] = HCI_EVENT_META_GAP; 9459 event[pos++] = 5; 9460 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9461 event[pos++] = status; 9462 event[pos++] = cig_id; 9463 little_endian_store_16(event, pos, cis_con_handle); 9464 pos += 2; 9465 hci_emit_event(event, pos, 0); 9466 } 9467 9468 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9469 uint8_t event [4]; 9470 uint16_t pos = 0; 9471 event[pos++] = HCI_EVENT_META_GAP; 9472 event[pos++] = 2; 9473 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9474 event[pos++] = big->big_handle; 9475 hci_emit_event(event, pos, 0); 9476 } 9477 9478 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9479 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9480 uint16_t pos = 0; 9481 event[pos++] = HCI_EVENT_META_GAP; 9482 event[pos++] = 4; 9483 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9484 event[pos++] = status; 9485 event[pos++] = big_sync->big_handle; 9486 event[pos++] = big_sync->num_bis; 9487 uint8_t i; 9488 for (i=0;i<big_sync->num_bis;i++){ 9489 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9490 pos += 2; 9491 } 9492 hci_emit_event(event, pos, 0); 9493 } 9494 9495 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9496 uint8_t event [4]; 9497 uint16_t pos = 0; 9498 event[pos++] = HCI_EVENT_META_GAP; 9499 event[pos++] = 2; 9500 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9501 event[pos++] = big_handle; 9502 hci_emit_event(event, pos, 0); 9503 } 9504 9505 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9506 uint8_t event[6]; 9507 uint16_t pos = 0; 9508 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9509 event[pos++] = sizeof(event) - 2; 9510 event[pos++] = big->big_handle; 9511 event[pos++] = bis_index; 9512 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9513 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9514 } 9515 9516 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9517 uint8_t event[4]; 9518 uint16_t pos = 0; 9519 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9520 event[pos++] = sizeof(event) - 2; 9521 little_endian_store_16(event, pos, cis_con_handle); 9522 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9523 } 9524 9525 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9526 btstack_linked_list_iterator_t it; 9527 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9528 while (btstack_linked_list_iterator_has_next(&it)){ 9529 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9530 if ( big->big_handle == big_handle ) { 9531 return big; 9532 } 9533 } 9534 return NULL; 9535 } 9536 9537 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9538 btstack_linked_list_iterator_t it; 9539 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9540 while (btstack_linked_list_iterator_has_next(&it)){ 9541 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9542 if ( big_sync->big_handle == big_handle ) { 9543 return big_sync; 9544 } 9545 } 9546 return NULL; 9547 } 9548 9549 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9550 hci_stack->iso_packets_to_queue = num_packets; 9551 } 9552 9553 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9554 btstack_linked_list_iterator_t it; 9555 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9556 while (btstack_linked_list_iterator_has_next(&it)){ 9557 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9558 if ( cig->cig_id == cig_id ) { 9559 return cig; 9560 } 9561 } 9562 return NULL; 9563 } 9564 9565 static void hci_iso_notify_can_send_now(void){ 9566 9567 // BIG 9568 9569 btstack_linked_list_iterator_t it; 9570 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9571 while (btstack_linked_list_iterator_has_next(&it)){ 9572 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9573 // track number completed packet timestamps 9574 if (big->num_completed_timestamp_current_valid){ 9575 big->num_completed_timestamp_current_valid = false; 9576 if (big->num_completed_timestamp_previous_valid){ 9577 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9578 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9579 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9580 big->num_completed_timestamp_previous_ms); 9581 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9582 // to catch up, skip packet on all BIS 9583 uint8_t i; 9584 for (i=0;i<big->num_bis;i++){ 9585 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9586 if (iso_stream){ 9587 iso_stream->num_packets_to_skip++; 9588 } 9589 } 9590 } 9591 } 9592 big->num_completed_timestamp_previous_valid = true; 9593 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9594 } 9595 9596 if (big->can_send_now_requested){ 9597 // check if no outgoing iso packets pending and no can send now have to be emitted 9598 uint8_t i; 9599 bool can_send = true; 9600 uint8_t num_iso_queued_minimum = 0; 9601 for (i=0;i<big->num_bis;i++){ 9602 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9603 if (iso_stream == NULL) continue; 9604 // handle case where individual ISO packet was sent too late: 9605 // for each additionally queued packet, a new one needs to get skipped 9606 if (i==0){ 9607 num_iso_queued_minimum = iso_stream->num_packets_sent; 9608 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 9609 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 9610 iso_stream->num_packets_to_skip += num_packets_to_skip; 9611 iso_stream->num_packets_sent -= num_packets_to_skip; 9612 } 9613 // check if we can send now 9614 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 9615 can_send = false; 9616 break; 9617 } 9618 } 9619 if (can_send){ 9620 // propagate can send now to individual streams 9621 big->can_send_now_requested = false; 9622 for (i=0;i<big->num_bis;i++){ 9623 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9624 iso_stream->emit_ready_to_send = true; 9625 } 9626 } 9627 } 9628 } 9629 9630 if (hci_stack->hci_packet_buffer_reserved) return; 9631 9632 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9633 while (btstack_linked_list_iterator_has_next(&it)){ 9634 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9635 // report bis ready 9636 uint8_t i; 9637 for (i=0;i<big->num_bis;i++){ 9638 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9639 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9640 iso_stream->emit_ready_to_send = false; 9641 hci_emit_bis_can_send_now(big, i); 9642 break; 9643 } 9644 } 9645 } 9646 9647 // CIS 9648 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9649 while (btstack_linked_list_iterator_has_next(&it)) { 9650 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9651 if ((iso_stream->can_send_now_requested) && 9652 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 9653 iso_stream->can_send_now_requested = false; 9654 hci_emit_cis_can_send_now(iso_stream->con_handle); 9655 } 9656 } 9657 } 9658 9659 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9660 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9661 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9662 } 9663 if (big_params->num_bis == 0){ 9664 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9665 } 9666 if (big_params->num_bis > MAX_NR_BIS){ 9667 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9668 } 9669 9670 // reserve ISO Streams 9671 uint8_t i; 9672 uint8_t status = ERROR_CODE_SUCCESS; 9673 for (i=0;i<big_params->num_bis;i++){ 9674 status = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_CON_HANDLE_INVALID, big_params->big_handle, 9675 HCI_ISO_STREAM_STATE_REQUESTED); 9676 if (status != ERROR_CODE_SUCCESS) { 9677 break; 9678 } 9679 } 9680 9681 // free structs on error 9682 if (status != ERROR_CODE_SUCCESS){ 9683 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 9684 return status; 9685 } 9686 9687 le_audio_big_t * big = storage; 9688 big->big_handle = big_params->big_handle; 9689 big->params = big_params; 9690 big->state = LE_AUDIO_BIG_STATE_CREATE; 9691 big->num_bis = big_params->num_bis; 9692 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9693 9694 hci_run(); 9695 9696 return ERROR_CODE_SUCCESS; 9697 } 9698 9699 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9700 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9701 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9702 } 9703 if (big_sync_params->num_bis == 0){ 9704 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9705 } 9706 if (big_sync_params->num_bis > MAX_NR_BIS){ 9707 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9708 } 9709 9710 le_audio_big_sync_t * big_sync = storage; 9711 big_sync->big_handle = big_sync_params->big_handle; 9712 big_sync->params = big_sync_params; 9713 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9714 big_sync->num_bis = big_sync_params->num_bis; 9715 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9716 9717 hci_run(); 9718 9719 return ERROR_CODE_SUCCESS; 9720 } 9721 9722 uint8_t gap_big_terminate(uint8_t big_handle){ 9723 le_audio_big_t * big = hci_big_for_handle(big_handle); 9724 if (big == NULL){ 9725 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9726 } 9727 switch (big->state){ 9728 case LE_AUDIO_BIG_STATE_CREATE: 9729 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9730 hci_emit_big_terminated(big); 9731 break; 9732 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9733 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9734 break; 9735 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9736 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9737 case LE_AUDIO_BIG_STATE_ACTIVE: 9738 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9739 hci_run(); 9740 break; 9741 default: 9742 return ERROR_CODE_COMMAND_DISALLOWED; 9743 } 9744 return ERROR_CODE_SUCCESS; 9745 } 9746 9747 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9748 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9749 if (big_sync == NULL){ 9750 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9751 } 9752 switch (big_sync->state){ 9753 case LE_AUDIO_BIG_STATE_CREATE: 9754 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9755 hci_emit_big_sync_stopped(big_handle); 9756 break; 9757 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9758 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9759 break; 9760 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9761 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9762 case LE_AUDIO_BIG_STATE_ACTIVE: 9763 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 9764 hci_run(); 9765 break; 9766 default: 9767 return ERROR_CODE_COMMAND_DISALLOWED; 9768 } 9769 return ERROR_CODE_SUCCESS; 9770 } 9771 9772 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 9773 le_audio_big_t * big = hci_big_for_handle(big_handle); 9774 if (big == NULL){ 9775 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9776 } 9777 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 9778 return ERROR_CODE_COMMAND_DISALLOWED; 9779 } 9780 big->can_send_now_requested = true; 9781 hci_iso_notify_can_send_now(); 9782 return ERROR_CODE_SUCCESS; 9783 } 9784 9785 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 9786 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 9787 if (iso_stream == NULL){ 9788 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9789 } 9790 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 9791 return ERROR_CODE_COMMAND_DISALLOWED; 9792 } 9793 iso_stream->can_send_now_requested = true; 9794 hci_iso_notify_can_send_now(); 9795 return ERROR_CODE_SUCCESS; 9796 } 9797 9798 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 9799 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 9800 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9801 } 9802 if (cig_params->num_cis == 0){ 9803 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9804 } 9805 if (cig_params->num_cis > MAX_NR_BIS){ 9806 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9807 } 9808 9809 // reserve ISO Streams 9810 uint8_t i; 9811 uint8_t status = ERROR_CODE_SUCCESS; 9812 for (i=0;i<cig_params->num_cis;i++){ 9813 status = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_CON_HANDLE_INVALID, cig_params->cig_id, 9814 HCI_ISO_STREAM_STATE_REQUESTED); 9815 if (status != ERROR_CODE_SUCCESS) { 9816 break; 9817 } 9818 } 9819 9820 // free structs on error 9821 if (status != ERROR_CODE_SUCCESS){ 9822 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 9823 return status; 9824 } 9825 9826 le_audio_cig_t * cig = storage; 9827 cig->cig_id = cig_params->cig_id; 9828 cig->num_cis = cig_params->num_cis; 9829 cig->params = cig_params; 9830 cig->state = LE_AUDIO_CIG_STATE_CREATE; 9831 for (i=0;i<cig->num_cis;i++){ 9832 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 9833 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 9834 } 9835 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 9836 9837 hci_run(); 9838 9839 return ERROR_CODE_SUCCESS; 9840 } 9841 9842 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 9843 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 9844 if (cig == NULL){ 9845 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9846 } 9847 9848 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 9849 return ERROR_CODE_COMMAND_DISALLOWED; 9850 } 9851 9852 // store ACL Connection Handles 9853 uint8_t i; 9854 for (i=0;i<cig->num_cis;i++){ 9855 // check that all con handles exit 9856 hci_con_handle_t cis_handle = cis_con_handles[i]; 9857 uint8_t j; 9858 bool found = false; 9859 for (j=0;j<cig->num_cis;j++){ 9860 if (cig->cis_con_handles[j] == cis_handle){ 9861 cig->acl_con_handles[j] = acl_con_handles[j]; 9862 found = true; 9863 break; 9864 } 9865 } 9866 if (!found){ 9867 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9868 } 9869 } 9870 9871 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 9872 hci_run(); 9873 9874 return ERROR_CODE_SUCCESS; 9875 } 9876 9877 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_con_handle, hci_iso_stream_state_t state){ 9878 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 9879 if (iso_stream != NULL){ 9880 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9881 } 9882 9883 uint8_t status = hci_iso_stream_create(HCI_ISO_TYPE_CIS, cis_con_handle, 9884 HCI_ISO_GROUP_ID_INVALID, state); 9885 if (status == ERROR_CODE_SUCCESS){ 9886 return status; 9887 } 9888 9889 hci_run(); 9890 return ERROR_CODE_SUCCESS; 9891 } 9892 9893 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 9894 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 9895 } 9896 9897 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 9898 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 9899 } 9900 9901 9902 #endif 9903 #endif /* ENABLE_BLE */ 9904 9905 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 9906 void hci_setup_test_connections_fuzz(void){ 9907 hci_connection_t * conn; 9908 9909 // default address: 66:55:44:33:00:01 9910 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 9911 9912 // setup Controller info 9913 hci_stack->num_cmd_packets = 255; 9914 hci_stack->acl_packets_total_num = 255; 9915 9916 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 9917 addr[5] = 0x01; 9918 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9919 conn->con_handle = addr[5]; 9920 conn->role = HCI_ROLE_SLAVE; 9921 conn->state = RECEIVED_CONNECTION_REQUEST; 9922 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9923 9924 // setup incoming Classic SCO connection with con handle 0x0002 9925 addr[5] = 0x02; 9926 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9927 conn->con_handle = addr[5]; 9928 conn->role = HCI_ROLE_SLAVE; 9929 conn->state = RECEIVED_CONNECTION_REQUEST; 9930 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9931 9932 // setup ready Classic ACL connection with con handle 0x0003 9933 addr[5] = 0x03; 9934 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9935 conn->con_handle = addr[5]; 9936 conn->role = HCI_ROLE_SLAVE; 9937 conn->state = OPEN; 9938 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9939 9940 // setup ready Classic SCO connection with con handle 0x0004 9941 addr[5] = 0x04; 9942 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9943 conn->con_handle = addr[5]; 9944 conn->role = HCI_ROLE_SLAVE; 9945 conn->state = OPEN; 9946 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9947 9948 // setup ready LE ACL connection with con handle 0x005 and public address 9949 addr[5] = 0x05; 9950 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 9951 conn->con_handle = addr[5]; 9952 conn->role = HCI_ROLE_SLAVE; 9953 conn->state = OPEN; 9954 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9955 conn->sm_connection.sm_connection_encrypted = 1; 9956 } 9957 9958 void hci_free_connections_fuzz(void){ 9959 btstack_linked_list_iterator_t it; 9960 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9961 while (btstack_linked_list_iterator_has_next(&it)){ 9962 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9963 btstack_linked_list_iterator_remove(&it); 9964 btstack_memory_hci_connection_free(con); 9965 } 9966 } 9967 void hci_simulate_working_fuzz(void){ 9968 hci_stack->le_scanning_param_update = false; 9969 hci_init_done(); 9970 hci_stack->num_cmd_packets = 255; 9971 } 9972 #endif 9973