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