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