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