1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 171 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 172 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 173 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 174 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 175 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 176 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 178 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 179 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 180 181 // enumerate supported commands 182 #define X(name, offset, bit) name, 183 enum { 184 SUPPORTED_HCI_COMMANDS 185 SUPPORTED_HCI_COMMANDS_COUNT 186 }; 187 #undef X 188 189 // prototypes 190 #ifdef ENABLE_CLASSIC 191 static void hci_update_scan_enable(void); 192 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 193 static int hci_local_ssp_activated(void); 194 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 195 static bool hci_ssp_supported(hci_connection_t * connection); 196 static void hci_notify_if_sco_can_send_now(void); 197 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 198 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 199 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 200 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 201 static void hci_connection_timestamp(hci_connection_t *connection); 202 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 203 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 204 #endif 205 206 static int hci_power_control_on(void); 207 static void hci_power_control_off(void); 208 static void hci_state_reset(void); 209 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 210 static void hci_emit_transport_packet_sent(void); 211 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 212 static void hci_emit_nr_connections_changed(void); 213 static void hci_emit_hci_open_failed(void); 214 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 215 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 216 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 217 static void hci_run(void); 218 static int hci_is_le_connection(hci_connection_t * connection); 219 220 #ifdef ENABLE_CLASSIC 221 static int hci_have_usb_transport(void); 222 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 223 #endif 224 225 #ifdef ENABLE_BLE 226 #ifdef ENABLE_LE_CENTRAL 227 // called from test/ble_client/advertising_data_parser.c 228 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 229 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 230 static hci_connection_t * gap_get_outgoing_connection(void); 231 static void hci_le_scan_stop(void); 232 static bool hci_run_general_gap_le(void); 233 #endif 234 #ifdef ENABLE_LE_PERIPHERAL 235 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 236 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 237 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 238 #endif /* ENABLE_LE_PERIPHERAL */ 239 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 240 static hci_iso_stream_t * hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id); 241 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 242 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 243 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 244 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 245 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 246 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size); 247 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 248 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 249 static void hci_iso_notify_can_send_now(void); 250 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 251 static void hci_emit_big_terminated(const le_audio_big_t * big); 252 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 253 static void hci_emit_big_sync_stopped(uint8_t big_handle); 254 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 255 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 256 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 257 258 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 259 #endif /* ENABLE_BLE */ 260 261 // the STACK is here 262 #ifndef HAVE_MALLOC 263 static hci_stack_t hci_stack_static; 264 #endif 265 static hci_stack_t * hci_stack = NULL; 266 267 #ifdef ENABLE_CLASSIC 268 // default name 269 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 270 271 // test helper 272 static uint8_t disable_l2cap_timeouts = 0; 273 #endif 274 275 // reset connection state on create and on reconnect 276 // don't overwrite addr, con handle, role 277 static void hci_connection_init(hci_connection_t * conn){ 278 conn->authentication_flags = AUTH_FLAG_NONE; 279 conn->bonding_flags = 0; 280 conn->requested_security_level = LEVEL_0; 281 #ifdef ENABLE_CLASSIC 282 conn->request_role = HCI_ROLE_INVALID; 283 conn->sniff_subrating_max_latency = 0xffff; 284 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 285 conn->link_key_type = INVALID_LINK_KEY; 286 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 287 btstack_run_loop_set_timer_context(&conn->timeout, conn); 288 hci_connection_timestamp(conn); 289 #endif 290 conn->acl_recombination_length = 0; 291 conn->acl_recombination_pos = 0; 292 conn->num_packets_sent = 0; 293 294 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 295 #ifdef ENABLE_BLE 296 conn->le_phy_update_all_phys = 0xff; 297 #endif 298 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 299 conn->le_max_tx_octets = 27; 300 #endif 301 #ifdef ENABLE_CLASSIC_PAIRING_OOB 302 conn->classic_oob_c_192 = NULL; 303 conn->classic_oob_r_192 = NULL; 304 conn->classic_oob_c_256 = NULL; 305 conn->classic_oob_r_256 = NULL; 306 #endif 307 } 308 309 /** 310 * create connection for given address 311 * 312 * @return connection OR NULL, if no memory left 313 */ 314 static hci_connection_t * 315 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 316 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 317 318 hci_connection_t * conn = btstack_memory_hci_connection_get(); 319 if (!conn) return NULL; 320 hci_connection_init(conn); 321 322 bd_addr_copy(conn->address, addr); 323 conn->address_type = addr_type; 324 conn->con_handle = HCI_CON_HANDLE_INVALID; 325 conn->role = role; 326 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 327 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 328 conn->le_past_advertising_handle = 0xff; 329 #endif 330 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 331 332 return conn; 333 } 334 335 336 /** 337 * get le connection parameter range 338 * 339 * @return le connection parameter range struct 340 */ 341 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 342 *range = hci_stack->le_connection_parameter_range; 343 } 344 345 /** 346 * set le connection parameter range 347 * 348 */ 349 350 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 351 hci_stack->le_connection_parameter_range = *range; 352 } 353 354 /** 355 * @brief Test if connection parameters are inside in existing rage 356 * @param conn_interval_min (unit: 1.25ms) 357 * @param conn_interval_max (unit: 1.25ms) 358 * @param conn_latency 359 * @param supervision_timeout (unit: 10ms) 360 * @return 1 if included 361 */ 362 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){ 363 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 364 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 365 366 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 367 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 368 369 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 370 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 371 372 return 1; 373 } 374 375 /** 376 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 377 * @note: default: 1 378 * @param max_peripheral_connections 379 */ 380 #ifdef ENABLE_LE_PERIPHERAL 381 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 382 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 383 } 384 #endif 385 386 /** 387 * get hci connections iterator 388 * 389 * @return hci connections iterator 390 */ 391 392 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 393 btstack_linked_list_iterator_init(it, &hci_stack->connections); 394 } 395 396 /** 397 * get connection for a given handle 398 * 399 * @return connection OR NULL, if not found 400 */ 401 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 402 btstack_linked_list_iterator_t it; 403 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 404 while (btstack_linked_list_iterator_has_next(&it)){ 405 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 406 if ( item->con_handle == con_handle ) { 407 return item; 408 } 409 } 410 return NULL; 411 } 412 413 /** 414 * get connection for given address 415 * 416 * @return connection OR NULL, if not found 417 */ 418 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 419 btstack_linked_list_iterator_t it; 420 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 421 while (btstack_linked_list_iterator_has_next(&it)){ 422 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 423 if (connection->address_type != addr_type) continue; 424 if (memcmp(addr, connection->address, 6) != 0) continue; 425 return connection; 426 } 427 return NULL; 428 } 429 430 #ifdef ENABLE_CLASSIC 431 432 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 433 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 434 } 435 436 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 437 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 438 } 439 440 #ifdef ENABLE_SCO_OVER_HCI 441 static int hci_number_sco_connections(void){ 442 int connections = 0; 443 btstack_linked_list_iterator_t it; 444 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 445 while (btstack_linked_list_iterator_has_next(&it)){ 446 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 447 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 448 connections++; 449 } 450 return connections; 451 } 452 #endif 453 454 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 455 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 456 #ifdef HAVE_EMBEDDED_TICK 457 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 458 // connections might be timed out 459 hci_emit_l2cap_check_timeout(connection); 460 } 461 #else 462 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 463 // connections might be timed out 464 hci_emit_l2cap_check_timeout(connection); 465 } 466 #endif 467 } 468 469 static void hci_connection_timestamp(hci_connection_t *connection){ 470 #ifdef HAVE_EMBEDDED_TICK 471 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 472 #else 473 connection->timestamp = btstack_run_loop_get_time_ms(); 474 #endif 475 } 476 477 /** 478 * add authentication flags and reset timer 479 * @note: assumes classic connection 480 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 481 */ 482 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 483 bd_addr_t addr; 484 reverse_bd_addr(bd_addr, addr); 485 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 486 if (conn) { 487 connectionSetAuthenticationFlags(conn, flags); 488 hci_connection_timestamp(conn); 489 } 490 } 491 492 static bool hci_pairing_active(hci_connection_t * hci_connection){ 493 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 494 } 495 496 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 497 if (hci_pairing_active(hci_connection)) return; 498 if (ssp){ 499 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 500 } else { 501 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 502 } 503 // if we are initiator, we have sent an HCI Authenticate Request 504 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 505 506 // if we are responder, use minimal service security level as required level 507 if (!initiator){ 508 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); 509 } 510 511 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 512 513 uint8_t event[12]; 514 event[0] = GAP_EVENT_PAIRING_STARTED; 515 event[1] = 10; 516 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 517 reverse_bd_addr(hci_connection->address, &event[4]); 518 event[10] = (uint8_t) ssp; 519 event[11] = (uint8_t) initiator; 520 hci_emit_event(event, sizeof(event), 1); 521 } 522 523 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 524 hci_connection->requested_security_level = LEVEL_0; 525 if (!hci_pairing_active(hci_connection)) return; 526 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 527 #ifdef ENABLE_CLASSIC_PAIRING_OOB 528 hci_connection->classic_oob_c_192 = NULL; 529 hci_connection->classic_oob_r_192 = NULL; 530 hci_connection->classic_oob_c_256 = NULL; 531 hci_connection->classic_oob_r_256 = NULL; 532 #endif 533 log_info("pairing complete, status %02x", status); 534 535 uint8_t event[11]; 536 event[0] = GAP_EVENT_PAIRING_COMPLETE; 537 event[1] = 9; 538 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 539 reverse_bd_addr(hci_connection->address, &event[4]); 540 event[10] = status; 541 hci_emit_event(event, sizeof(event), 1); 542 543 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 544 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 545 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 546 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 547 hci_connection->bonding_status = status; 548 } 549 } 550 551 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 552 hci_connection_t * conn = hci_connection_for_handle(handle); 553 if (!conn) return false; 554 return hci_pairing_active(conn); 555 } 556 557 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 558 if (!hci_stack->link_key_db) return; 559 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 560 hci_stack->link_key_db->delete_link_key(addr); 561 } 562 563 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 564 if (!hci_stack->link_key_db) return; 565 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 566 hci_stack->link_key_db->put_link_key(addr, link_key, type); 567 } 568 569 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 570 if (!hci_stack->link_key_db) return false; 571 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 572 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 573 return result; 574 } 575 576 void gap_delete_all_link_keys(void){ 577 bd_addr_t addr; 578 link_key_t link_key; 579 link_key_type_t type; 580 btstack_link_key_iterator_t it; 581 int ok = gap_link_key_iterator_init(&it); 582 if (!ok) { 583 log_error("could not initialize iterator"); 584 return; 585 } 586 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 587 gap_drop_link_key_for_bd_addr(addr); 588 } 589 gap_link_key_iterator_done(&it); 590 } 591 592 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 593 if (!hci_stack->link_key_db) return 0; 594 if (!hci_stack->link_key_db->iterator_init) return 0; 595 return hci_stack->link_key_db->iterator_init(it); 596 } 597 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){ 598 if (!hci_stack->link_key_db) return 0; 599 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 600 } 601 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 602 if (!hci_stack->link_key_db) return; 603 hci_stack->link_key_db->iterator_done(it); 604 } 605 #endif 606 607 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 608 switch (address_type){ 609 case BD_ADDR_TYPE_LE_PUBLIC: 610 case BD_ADDR_TYPE_LE_RANDOM: 611 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 612 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 613 return true; 614 default: 615 return false; 616 } 617 } 618 619 static int hci_is_le_connection(hci_connection_t * connection){ 620 return hci_is_le_connection_type(connection->address_type); 621 } 622 623 /** 624 * count connections 625 */ 626 static int nr_hci_connections(void){ 627 int count = 0; 628 btstack_linked_item_t *it; 629 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 630 count++; 631 } 632 return count; 633 } 634 635 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 636 637 unsigned int num_packets_sent_classic = 0; 638 unsigned int num_packets_sent_le = 0; 639 640 btstack_linked_item_t *it; 641 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 642 hci_connection_t * connection = (hci_connection_t *) it; 643 if (hci_is_le_connection(connection)){ 644 num_packets_sent_le += connection->num_packets_sent; 645 } 646 if (connection->address_type == BD_ADDR_TYPE_ACL){ 647 num_packets_sent_classic += connection->num_packets_sent; 648 } 649 } 650 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 651 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 652 int free_slots_le = 0; 653 654 if (free_slots_classic < 0){ 655 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); 656 return 0; 657 } 658 659 if (hci_stack->le_acl_packets_total_num){ 660 // if we have LE slots, they are used 661 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 662 if (free_slots_le < 0){ 663 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); 664 return 0; 665 } 666 } else { 667 // otherwise, classic slots are used for LE, too 668 free_slots_classic -= num_packets_sent_le; 669 if (free_slots_classic < 0){ 670 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); 671 return 0; 672 } 673 } 674 675 switch (address_type){ 676 case BD_ADDR_TYPE_UNKNOWN: 677 log_error("hci_number_free_acl_slots: unknown address type"); 678 return 0; 679 680 case BD_ADDR_TYPE_ACL: 681 return (uint16_t) free_slots_classic; 682 683 default: 684 if (hci_stack->le_acl_packets_total_num > 0){ 685 return (uint16_t) free_slots_le; 686 } 687 return (uint16_t) free_slots_classic; 688 } 689 } 690 691 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 692 // get connection type 693 hci_connection_t * connection = hci_connection_for_handle(con_handle); 694 if (!connection){ 695 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 696 return 0; 697 } 698 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 699 } 700 701 #ifdef ENABLE_CLASSIC 702 static int hci_number_free_sco_slots(void){ 703 unsigned int num_sco_packets_sent = 0; 704 btstack_linked_item_t *it; 705 if (hci_stack->synchronous_flow_control_enabled){ 706 // explicit flow control 707 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 708 hci_connection_t * connection = (hci_connection_t *) it; 709 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 710 num_sco_packets_sent += connection->num_packets_sent; 711 } 712 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 713 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 714 return 0; 715 } 716 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 717 } else { 718 // implicit flow control -- TODO 719 int num_ready = 0; 720 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 721 hci_connection_t * connection = (hci_connection_t *) it; 722 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 723 if (connection->sco_tx_ready == 0) continue; 724 num_ready++; 725 } 726 return num_ready; 727 } 728 } 729 #endif 730 731 // only used to send HCI Host Number Completed Packets 732 static int hci_can_send_comand_packet_transport(void){ 733 if (hci_stack->hci_packet_buffer_reserved) return 0; 734 735 // check for async hci transport implementations 736 if (hci_stack->hci_transport->can_send_packet_now){ 737 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 738 return 0; 739 } 740 } 741 return 1; 742 } 743 744 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 745 bool hci_can_send_command_packet_now(void){ 746 if (hci_can_send_comand_packet_transport() == 0) return false; 747 return hci_stack->num_cmd_packets > 0u; 748 } 749 750 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 751 // check for async hci transport implementations 752 if (!hci_stack->hci_transport->can_send_packet_now) return true; 753 return hci_stack->hci_transport->can_send_packet_now(packet_type); 754 } 755 756 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 757 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 758 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 759 } 760 761 bool hci_can_send_acl_le_packet_now(void){ 762 if (hci_stack->hci_packet_buffer_reserved) return false; 763 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 764 } 765 766 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 767 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 768 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 769 } 770 771 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 772 if (hci_stack->hci_packet_buffer_reserved) return false; 773 return hci_can_send_prepared_acl_packet_now(con_handle); 774 } 775 776 #ifdef ENABLE_CLASSIC 777 bool hci_can_send_acl_classic_packet_now(void){ 778 if (hci_stack->hci_packet_buffer_reserved) return false; 779 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 780 } 781 782 bool hci_can_send_prepared_sco_packet_now(void){ 783 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 784 if (hci_have_usb_transport()){ 785 return hci_stack->sco_can_send_now; 786 } else { 787 return hci_number_free_sco_slots() > 0; 788 } 789 } 790 791 bool hci_can_send_sco_packet_now(void){ 792 if (hci_stack->hci_packet_buffer_reserved) return false; 793 return hci_can_send_prepared_sco_packet_now(); 794 } 795 796 void hci_request_sco_can_send_now_event(void){ 797 hci_stack->sco_waiting_for_can_send_now = 1; 798 hci_notify_if_sco_can_send_now(); 799 } 800 #endif 801 802 // used for internal checks in l2cap.c 803 bool hci_is_packet_buffer_reserved(void){ 804 return hci_stack->hci_packet_buffer_reserved; 805 } 806 807 // reserves outgoing packet buffer. 808 // @return 1 if successful 809 bool hci_reserve_packet_buffer(void){ 810 if (hci_stack->hci_packet_buffer_reserved) { 811 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 812 return false; 813 } 814 hci_stack->hci_packet_buffer_reserved = true; 815 return true; 816 } 817 818 void hci_release_packet_buffer(void){ 819 hci_stack->hci_packet_buffer_reserved = false; 820 } 821 822 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 823 static int hci_transport_synchronous(void){ 824 return hci_stack->hci_transport->can_send_packet_now == NULL; 825 } 826 827 // used for debugging 828 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 829 static void hci_controller_dump_packets(void){ 830 // format: "{handle:04x}:{count:02d} " 831 char summaries[3][7 * 8 + 1]; 832 uint16_t totals[3]; 833 uint8_t index; 834 for (index = 0 ; index < 3 ; index++){ 835 summaries[index][0] = 0; 836 totals[index] = 0; 837 } 838 btstack_linked_item_t *it; 839 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 840 hci_connection_t * connection = (hci_connection_t *) it; 841 switch (connection->address_type){ 842 case BD_ADDR_TYPE_ACL: 843 index = 0; 844 break; 845 case BD_ADDR_TYPE_SCO: 846 index = 2; 847 break; 848 default: 849 index = 1; 850 break; 851 } 852 totals[index] += connection->num_packets_sent; 853 char item_text[10]; 854 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 855 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 856 } 857 for (index = 0 ; index < 3 ; index++){ 858 if (summaries[index][0] == 0){ 859 summaries[index][0] = '-'; 860 summaries[index][1] = 0; 861 } 862 } 863 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]); 864 } 865 #endif 866 867 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 868 869 // 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); 870 871 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 872 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 873 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 874 max_acl_data_packet_length = hci_stack->le_data_packets_length; 875 } 876 877 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 878 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 879 max_acl_data_packet_length = connection->le_max_tx_octets; 880 } 881 #endif 882 883 log_debug("hci_send_acl_packet_fragments entered"); 884 885 uint8_t status = ERROR_CODE_SUCCESS; 886 // multiple packets could be send on a synchronous HCI transport 887 while (true){ 888 889 log_debug("hci_send_acl_packet_fragments loop entered"); 890 891 // get current data 892 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 893 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 894 bool more_fragments = false; 895 896 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 897 if (current_acl_data_packet_length > max_acl_data_packet_length){ 898 more_fragments = true; 899 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 900 } 901 902 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 903 if (acl_header_pos > 0u){ 904 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 905 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 906 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 907 } 908 909 // update header len 910 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 911 912 // count packet 913 connection->num_packets_sent++; 914 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 915 916 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 917 if (more_fragments){ 918 // update start of next fragment to send 919 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 920 } else { 921 // done 922 hci_stack->acl_fragmentation_pos = 0; 923 hci_stack->acl_fragmentation_total_size = 0; 924 } 925 926 // send packet 927 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 928 const int size = current_acl_data_packet_length + 4; 929 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 930 hci_stack->acl_fragmentation_tx_active = 1; 931 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 932 if (err != 0){ 933 // no error from HCI Transport expected 934 status = ERROR_CODE_HARDWARE_FAILURE; 935 } 936 937 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 938 hci_controller_dump_packets(); 939 #endif 940 941 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 942 943 // done yet? 944 if (!more_fragments) break; 945 946 // can send more? 947 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 948 } 949 950 log_debug("hci_send_acl_packet_fragments loop over"); 951 952 // release buffer now for synchronous transport 953 if (hci_transport_synchronous()){ 954 hci_stack->acl_fragmentation_tx_active = 0; 955 hci_release_packet_buffer(); 956 hci_emit_transport_packet_sent(); 957 } 958 959 return status; 960 } 961 962 // pre: caller has reserved the packet buffer 963 uint8_t hci_send_acl_packet_buffer(int size){ 964 btstack_assert(hci_stack->hci_packet_buffer_reserved); 965 966 uint8_t * packet = hci_stack->hci_packet_buffer; 967 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 968 969 hci_connection_t *connection = hci_connection_for_handle( con_handle); 970 if (!connection) { 971 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 972 hci_release_packet_buffer(); 973 hci_emit_transport_packet_sent(); 974 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 975 } 976 977 // check for free places on Bluetooth module 978 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 979 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 980 hci_release_packet_buffer(); 981 hci_emit_transport_packet_sent(); 982 return BTSTACK_ACL_BUFFERS_FULL; 983 } 984 985 #ifdef ENABLE_CLASSIC 986 hci_connection_timestamp(connection); 987 #endif 988 989 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 990 991 // setup data 992 hci_stack->acl_fragmentation_total_size = size; 993 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 994 995 return hci_send_acl_packet_fragments(connection); 996 } 997 998 #ifdef ENABLE_CLASSIC 999 // pre: caller has reserved the packet buffer 1000 uint8_t hci_send_sco_packet_buffer(int size){ 1001 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1002 1003 uint8_t * packet = hci_stack->hci_packet_buffer; 1004 1005 // skip checks in loopback mode 1006 if (!hci_stack->loopback_mode){ 1007 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1008 1009 // check for free places on Bluetooth module 1010 if (!hci_can_send_prepared_sco_packet_now()) { 1011 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1012 hci_release_packet_buffer(); 1013 hci_emit_transport_packet_sent(); 1014 return BTSTACK_ACL_BUFFERS_FULL; 1015 } 1016 1017 // track send packet in connection struct 1018 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1019 if (!connection) { 1020 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1021 hci_release_packet_buffer(); 1022 hci_emit_transport_packet_sent(); 1023 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1024 } 1025 1026 if (hci_have_usb_transport()){ 1027 // token used 1028 hci_stack->sco_can_send_now = false; 1029 } else { 1030 if (hci_stack->synchronous_flow_control_enabled){ 1031 connection->num_packets_sent++; 1032 } else { 1033 connection->sco_tx_ready--; 1034 } 1035 } 1036 } 1037 1038 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1039 1040 #ifdef HAVE_SCO_TRANSPORT 1041 hci_stack->sco_transport->send_packet(packet, size); 1042 hci_release_packet_buffer(); 1043 hci_emit_transport_packet_sent(); 1044 1045 return 0; 1046 #else 1047 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1048 if (hci_transport_synchronous()){ 1049 hci_release_packet_buffer(); 1050 hci_emit_transport_packet_sent(); 1051 } 1052 1053 if (err != 0){ 1054 return ERROR_CODE_HARDWARE_FAILURE; 1055 } 1056 return ERROR_CODE_SUCCESS; 1057 #endif 1058 } 1059 #endif 1060 1061 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1062 static uint8_t hci_send_iso_packet_fragments(void){ 1063 1064 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1065 uint8_t status = ERROR_CODE_SUCCESS; 1066 // multiple packets could be send on a synchronous HCI transport 1067 while (true){ 1068 1069 // get current data 1070 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1071 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1072 bool more_fragments = false; 1073 1074 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1075 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1076 more_fragments = true; 1077 current_iso_data_packet_length = max_iso_data_packet_length; 1078 } 1079 1080 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1081 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1082 uint8_t pb_flags; 1083 if (iso_header_pos == 0u){ 1084 // first fragment, keep TS field 1085 pb_flags = more_fragments ? 0x00 : 0x02; 1086 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1087 } else { 1088 // later fragment, drop TS field 1089 pb_flags = more_fragments ? 0x01 : 0x03; 1090 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1091 } 1092 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1093 1094 // update header len 1095 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1096 1097 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1098 if (more_fragments){ 1099 // update start of next fragment to send 1100 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1101 } else { 1102 // done 1103 hci_stack->iso_fragmentation_pos = 0; 1104 hci_stack->iso_fragmentation_total_size = 0; 1105 } 1106 1107 // send packet 1108 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1109 const int size = current_iso_data_packet_length + 4; 1110 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1111 hci_stack->iso_fragmentation_tx_active = true; 1112 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1113 if (err != 0){ 1114 // no error from HCI Transport expected 1115 status = ERROR_CODE_HARDWARE_FAILURE; 1116 } 1117 1118 // done yet? 1119 if (!more_fragments) break; 1120 1121 // can send more? 1122 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1123 } 1124 1125 // release buffer now for synchronous transport 1126 if (hci_transport_synchronous()){ 1127 hci_stack->iso_fragmentation_tx_active = false; 1128 hci_release_packet_buffer(); 1129 hci_emit_transport_packet_sent(); 1130 } 1131 1132 return status; 1133 } 1134 1135 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1136 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1137 1138 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1139 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1140 if (iso_stream == NULL){ 1141 hci_release_packet_buffer(); 1142 hci_iso_notify_can_send_now(); 1143 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1144 } 1145 1146 // TODO: check for space on controller 1147 1148 // skip iso packets if needed 1149 if (iso_stream->num_packets_to_skip > 0){ 1150 iso_stream->num_packets_to_skip--; 1151 // pretend it was processed and trigger next one 1152 hci_release_packet_buffer(); 1153 hci_iso_notify_can_send_now(); 1154 return ERROR_CODE_SUCCESS; 1155 } 1156 1157 // track outgoing packet sent 1158 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1159 iso_stream->num_packets_sent++; 1160 1161 // setup data 1162 hci_stack->iso_fragmentation_total_size = size; 1163 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1164 1165 return hci_send_iso_packet_fragments(); 1166 } 1167 #endif 1168 1169 static void acl_handler(uint8_t *packet, uint16_t size){ 1170 1171 // get info 1172 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1173 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1174 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1175 uint16_t acl_length = READ_ACL_LENGTH(packet); 1176 1177 // ignore non-registered handle 1178 if (!conn){ 1179 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1180 return; 1181 } 1182 1183 // assert packet is complete 1184 if ((acl_length + 4u) != size){ 1185 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1186 return; 1187 } 1188 1189 #ifdef ENABLE_CLASSIC 1190 // update idle timestamp 1191 hci_connection_timestamp(conn); 1192 #endif 1193 1194 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1195 hci_stack->host_completed_packets = 1; 1196 conn->num_packets_completed++; 1197 #endif 1198 1199 // handle different packet types 1200 switch (acl_flags & 0x03u) { 1201 1202 case 0x01: // continuation fragment 1203 1204 // sanity checks 1205 if (conn->acl_recombination_pos == 0u) { 1206 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1207 return; 1208 } 1209 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1210 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1211 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1212 conn->acl_recombination_pos = 0; 1213 return; 1214 } 1215 1216 // append fragment payload (header already stored) 1217 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1218 &packet[4], acl_length); 1219 conn->acl_recombination_pos += acl_length; 1220 1221 // forward complete L2CAP packet if complete. 1222 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1223 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1224 // reset recombination buffer 1225 conn->acl_recombination_length = 0; 1226 conn->acl_recombination_pos = 0; 1227 } 1228 break; 1229 1230 case 0x02: { // first fragment 1231 1232 // sanity check 1233 if (conn->acl_recombination_pos) { 1234 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1235 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1236 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1237 } 1238 conn->acl_recombination_pos = 0; 1239 } 1240 1241 // peek into L2CAP packet! 1242 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1243 1244 // compare fragment size to L2CAP packet size 1245 if (acl_length >= (l2cap_length + 4u)){ 1246 // forward fragment as L2CAP packet 1247 hci_emit_acl_packet(packet, acl_length + 4u); 1248 } else { 1249 1250 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1251 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1252 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1253 return; 1254 } 1255 1256 // store first fragment and tweak acl length for complete package 1257 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1258 packet, acl_length + 4u); 1259 conn->acl_recombination_pos = acl_length + 4u; 1260 conn->acl_recombination_length = l2cap_length; 1261 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1262 } 1263 break; 1264 1265 } 1266 default: 1267 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1268 return; 1269 } 1270 1271 // execute main loop 1272 hci_run(); 1273 } 1274 1275 static void hci_connection_stop_timer(hci_connection_t * conn){ 1276 btstack_run_loop_remove_timer(&conn->timeout); 1277 #ifdef ENABLE_CLASSIC 1278 btstack_run_loop_remove_timer(&conn->timeout_sco); 1279 #endif 1280 } 1281 1282 static void hci_shutdown_connection(hci_connection_t *conn){ 1283 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1284 1285 #ifdef ENABLE_CLASSIC 1286 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1287 bd_addr_type_t addr_type = conn->address_type; 1288 #endif 1289 #ifdef HAVE_SCO_TRANSPORT 1290 hci_con_handle_t con_handle = conn->con_handle; 1291 #endif 1292 #endif 1293 1294 hci_connection_stop_timer(conn); 1295 1296 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1297 btstack_memory_hci_connection_free( conn ); 1298 1299 // now it's gone 1300 hci_emit_nr_connections_changed(); 1301 1302 #ifdef ENABLE_CLASSIC 1303 #ifdef ENABLE_SCO_OVER_HCI 1304 // update SCO 1305 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1306 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1307 } 1308 #endif 1309 #ifdef HAVE_SCO_TRANSPORT 1310 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1311 hci_stack->sco_transport->close(con_handle); 1312 } 1313 #endif 1314 #endif 1315 } 1316 1317 #ifdef ENABLE_CLASSIC 1318 1319 static const uint16_t hci_acl_packet_type_sizes[] = { 1320 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1321 HCI_ACL_DH1_SIZE, 0, 0, 0, 1322 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1323 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1324 }; 1325 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1326 0, // 3 slot packets 1327 1, // 5 slot packets 1328 25, // EDR 2 mpbs 1329 26, // EDR 3 mbps 1330 39, // 3 slot EDR packts 1331 40, // 5 slot EDR packet 1332 }; 1333 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1334 0x0f00, // 3 slot packets 1335 0xf000, // 5 slot packets 1336 0x1102, // EDR 2 mpbs 1337 0x2204, // EDR 3 mbps 1338 0x0300, // 3 slot EDR packts 1339 0x3000, // 5 slot EDR packet 1340 }; 1341 1342 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1343 // enable packet types based on size 1344 uint16_t packet_types = 0; 1345 unsigned int i; 1346 for (i=0;i<16;i++){ 1347 if (hci_acl_packet_type_sizes[i] == 0) continue; 1348 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1349 packet_types |= 1 << i; 1350 } 1351 } 1352 // disable packet types due to missing local supported features 1353 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1354 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1355 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1356 if (feature_set) continue; 1357 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1358 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1359 } 1360 return packet_types; 1361 } 1362 1363 uint16_t hci_usable_acl_packet_types(void){ 1364 // flip bits for "may not be used" 1365 return hci_stack->usable_packet_types_acl ^ 0x3306; 1366 } 1367 1368 static const struct { 1369 uint8_t feature_index; 1370 uint16_t feature_packet_mask; 1371 } hci_sco_packet_type_feature_requirements[] = { 1372 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1373 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1374 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1375 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1376 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1377 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1378 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1379 }; 1380 1381 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1382 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1383 unsigned int i; 1384 // disable packet types due to missing local supported features 1385 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1386 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1387 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1388 if (feature_set) continue; 1389 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_sco_packet_type_feature_requirements[i].feature_packet_mask); 1390 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1391 } 1392 return packet_types; 1393 } 1394 1395 uint16_t hci_usable_sco_packet_types(void){ 1396 return hci_stack->usable_packet_types_sco; 1397 } 1398 1399 #endif 1400 1401 uint8_t* hci_get_outgoing_packet_buffer(void){ 1402 // hci packet buffer is >= acl data packet length 1403 return hci_stack->hci_packet_buffer; 1404 } 1405 1406 uint16_t hci_max_acl_data_packet_length(void){ 1407 return hci_stack->acl_data_packet_length; 1408 } 1409 1410 #ifdef ENABLE_CLASSIC 1411 bool hci_extended_sco_link_supported(void){ 1412 // No. 31, byte 3, bit 7 1413 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1414 } 1415 #endif 1416 1417 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1418 // No. 54, byte 6, bit 6 1419 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1420 } 1421 1422 #ifdef ENABLE_CLASSIC 1423 static int gap_ssp_supported(void){ 1424 // No. 51, byte 6, bit 3 1425 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1426 } 1427 #endif 1428 1429 static int hci_classic_supported(void){ 1430 #ifdef ENABLE_CLASSIC 1431 // No. 37, byte 4, bit 5, = No BR/EDR Support 1432 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1433 #else 1434 return 0; 1435 #endif 1436 } 1437 1438 static int hci_le_supported(void){ 1439 #ifdef ENABLE_BLE 1440 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1441 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1442 #else 1443 return 0; 1444 #endif 1445 } 1446 1447 static bool hci_command_supported(uint8_t command_index){ 1448 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1449 } 1450 1451 #ifdef ENABLE_BLE 1452 1453 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1454 static bool hci_extended_advertising_supported(void){ 1455 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1456 } 1457 #endif 1458 1459 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1460 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1461 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1462 } else { 1463 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1464 } 1465 } 1466 1467 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1468 *addr_type = hci_stack->le_own_addr_type; 1469 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1470 } 1471 1472 #ifdef ENABLE_LE_PERIPHERAL 1473 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1474 *addr_type = hci_stack->le_advertisements_own_addr_type; 1475 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1476 }; 1477 #endif 1478 1479 #ifdef ENABLE_LE_CENTRAL 1480 1481 /** 1482 * @brief Get own addr type and address used for LE connections (Central) 1483 */ 1484 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1485 *addr_type = hci_stack->le_connection_own_addr_type; 1486 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1487 } 1488 1489 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1490 1491 uint16_t offset = 3; 1492 uint8_t num_reports = packet[offset]; 1493 offset += 1; 1494 1495 uint16_t i; 1496 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1497 for (i=0; (i<num_reports) && (offset < size);i++){ 1498 // sanity checks on data_length: 1499 uint8_t data_length = packet[offset + 8]; 1500 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1501 if ((offset + 9u + data_length + 1u) > size) return; 1502 // setup event 1503 uint8_t event_size = 10u + data_length; 1504 uint16_t pos = 0; 1505 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1506 event[pos++] = event_size; 1507 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1508 offset += 8; 1509 pos += 8; 1510 event[pos++] = packet[offset + 1 + data_length]; // rssi 1511 event[pos++] = data_length; 1512 offset++; 1513 (void)memcpy(&event[pos], &packet[offset], data_length); 1514 pos += data_length; 1515 offset += data_length + 1u; // rssi 1516 hci_emit_event(event, pos, 1); 1517 } 1518 } 1519 1520 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1521 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1522 uint16_t offset = 3; 1523 uint8_t num_reports = packet[offset++]; 1524 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1525 uint8_t i; 1526 for (i=0; (i<num_reports) && (offset < size);i++){ 1527 // sanity checks on data_length: 1528 uint16_t data_length = packet[offset + 23]; 1529 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1530 if ((offset + 24u + data_length) > size) return; 1531 uint16_t event_type = little_endian_read_16(packet, offset); 1532 offset += 2; 1533 if ((event_type & 0x10) != 0) { 1534 // setup legacy event 1535 uint8_t legacy_event_type; 1536 switch (event_type){ 1537 case 0b0010011: 1538 // ADV_IND 1539 legacy_event_type = 0; 1540 break; 1541 case 0b0010101: 1542 // ADV_DIRECT_IND 1543 legacy_event_type = 1; 1544 break; 1545 case 0b0010010: 1546 // ADV_SCAN_IND 1547 legacy_event_type = 2; 1548 break; 1549 case 0b0010000: 1550 // ADV_NONCONN_IND 1551 legacy_event_type = 3; 1552 break; 1553 case 0b0011011: 1554 case 0b0011010: 1555 // SCAN_RSP 1556 legacy_event_type = 4; 1557 break; 1558 default: 1559 legacy_event_type = 0; 1560 break; 1561 } 1562 uint16_t pos = 0; 1563 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1564 event[pos++] = 10u + data_length; 1565 event[pos++] = legacy_event_type; 1566 // copy address type + address 1567 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1568 offset += 7; 1569 pos += 7; 1570 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1571 offset += 4; 1572 // copy rssi 1573 event[pos++] = packet[offset++]; 1574 // skip periodic advertising interval and direct address 1575 offset += 9; 1576 // copy data len + data; 1577 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1578 pos += 1 +data_length; 1579 offset += 1+ data_length; 1580 hci_emit_event(event, pos, 1); 1581 } else { 1582 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1583 uint8_t report_len = 24 + data_length; 1584 event[1] = report_len; 1585 little_endian_store_16(event, 2, event_type); 1586 memcpy(&event[4], &packet[offset], report_len); 1587 offset += report_len; 1588 hci_emit_event(event, 2 + report_len, 1); 1589 } 1590 } 1591 } 1592 #endif 1593 1594 #endif 1595 #endif 1596 1597 #ifdef ENABLE_BLE 1598 #ifdef ENABLE_LE_PERIPHERAL 1599 static void hci_update_advertisements_enabled_for_current_roles(void){ 1600 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1601 // get number of active le slave connections 1602 int num_slave_connections = 0; 1603 btstack_linked_list_iterator_t it; 1604 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1605 while (btstack_linked_list_iterator_has_next(&it)){ 1606 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1607 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1608 if (con->state != OPEN) continue; 1609 if (con->role != HCI_ROLE_SLAVE) continue; 1610 if (!hci_is_le_connection(con)) continue; 1611 num_slave_connections++; 1612 } 1613 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1614 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1615 } else { 1616 hci_stack->le_advertisements_enabled_for_current_roles = false; 1617 } 1618 } 1619 #endif 1620 #endif 1621 1622 #ifdef ENABLE_CLASSIC 1623 static void gap_run_set_local_name(void){ 1624 hci_reserve_packet_buffer(); 1625 uint8_t * packet = hci_stack->hci_packet_buffer; 1626 // construct HCI Command and send 1627 uint16_t opcode = hci_write_local_name.opcode; 1628 hci_stack->last_cmd_opcode = opcode; 1629 packet[0] = opcode & 0xff; 1630 packet[1] = opcode >> 8; 1631 packet[2] = DEVICE_NAME_LEN; 1632 memset(&packet[3], 0, DEVICE_NAME_LEN); 1633 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1634 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1635 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1636 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1637 // expand '00:00:00:00:00:00' in name with bd_addr 1638 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1639 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1640 } 1641 1642 static void gap_run_set_eir_data(void){ 1643 hci_reserve_packet_buffer(); 1644 uint8_t * packet = hci_stack->hci_packet_buffer; 1645 // construct HCI Command in-place and send 1646 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1647 hci_stack->last_cmd_opcode = opcode; 1648 uint16_t offset = 0; 1649 packet[offset++] = opcode & 0xff; 1650 packet[offset++] = opcode >> 8; 1651 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1652 packet[offset++] = 0; // FEC not required 1653 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1654 if (hci_stack->eir_data){ 1655 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1656 ad_context_t context; 1657 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1658 uint8_t data_type = ad_iterator_get_data_type(&context); 1659 uint8_t size = ad_iterator_get_data_len(&context); 1660 const uint8_t *data = ad_iterator_get_data(&context); 1661 // copy item 1662 packet[offset++] = size + 1; 1663 packet[offset++] = data_type; 1664 memcpy(&packet[offset], data, size); 1665 // update name item 1666 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1667 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1668 } 1669 offset += size; 1670 } 1671 } else { 1672 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1673 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1674 packet[offset++] = bytes_to_copy + 1; 1675 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1676 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1677 // expand '00:00:00:00:00:00' in name with bd_addr 1678 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1679 } 1680 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1681 } 1682 1683 static void hci_run_gap_tasks_classic(void){ 1684 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1685 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1686 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1687 return; 1688 } 1689 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1690 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1691 gap_run_set_local_name(); 1692 return; 1693 } 1694 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1695 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1696 gap_run_set_eir_data(); 1697 return; 1698 } 1699 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1700 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1701 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1702 return; 1703 } 1704 // write page scan activity 1705 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1706 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1707 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1708 return; 1709 } 1710 // write page scan type 1711 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1712 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1713 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1714 return; 1715 } 1716 // write page timeout 1717 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1718 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1719 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1720 return; 1721 } 1722 // send scan enable 1723 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1724 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1725 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1726 return; 1727 } 1728 // send write scan activity 1729 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1730 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1731 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1732 return; 1733 } 1734 // send write inquiry transmit power level 1735 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1736 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1737 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1738 return; 1739 } 1740 } 1741 #endif 1742 1743 #ifndef HAVE_HOST_CONTROLLER_API 1744 1745 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1746 if (!hci_stack->config) return 0; 1747 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1748 // Limit baud rate for Broadcom chipsets to 3 mbps 1749 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1750 baud_rate = 3000000; 1751 } 1752 return baud_rate; 1753 } 1754 1755 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1756 UNUSED(ds); 1757 1758 switch (hci_stack->substate){ 1759 case HCI_INIT_W4_SEND_RESET: 1760 log_info("Resend HCI Reset"); 1761 hci_stack->substate = HCI_INIT_SEND_RESET; 1762 hci_stack->num_cmd_packets = 1; 1763 hci_run(); 1764 break; 1765 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1766 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1767 if (hci_stack->hci_transport->reset_link){ 1768 hci_stack->hci_transport->reset_link(); 1769 } 1770 1771 /* fall through */ 1772 1773 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1774 log_info("Resend HCI Reset - CSR Warm Boot"); 1775 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1776 hci_stack->num_cmd_packets = 1; 1777 hci_run(); 1778 break; 1779 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1780 if (hci_stack->hci_transport->set_baudrate){ 1781 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1782 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1783 hci_stack->hci_transport->set_baudrate(baud_rate); 1784 } 1785 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1786 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1787 if (hci_stack->hci_transport->reset_link){ 1788 log_info("Link Reset"); 1789 hci_stack->hci_transport->reset_link(); 1790 } 1791 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1792 hci_run(); 1793 } 1794 break; 1795 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1796 // otherwise continue 1797 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1798 hci_send_cmd(&hci_read_local_supported_commands); 1799 break; 1800 default: 1801 break; 1802 } 1803 } 1804 #endif 1805 1806 static void hci_initializing_next_state(void){ 1807 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1808 } 1809 1810 static void hci_init_done(void){ 1811 // done. tell the app 1812 log_info("hci_init_done -> HCI_STATE_WORKING"); 1813 hci_stack->state = HCI_STATE_WORKING; 1814 hci_emit_state(); 1815 } 1816 1817 // assumption: hci_can_send_command_packet_now() == true 1818 static void hci_initializing_run(void){ 1819 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1820 1821 if (!hci_can_send_command_packet_now()) return; 1822 1823 #ifndef HAVE_HOST_CONTROLLER_API 1824 bool need_baud_change = hci_stack->config 1825 && hci_stack->chipset 1826 && hci_stack->chipset->set_baudrate_command 1827 && hci_stack->hci_transport->set_baudrate 1828 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1829 #endif 1830 1831 switch (hci_stack->substate){ 1832 case HCI_INIT_SEND_RESET: 1833 hci_state_reset(); 1834 1835 #ifndef HAVE_HOST_CONTROLLER_API 1836 // prepare reset if command complete not received in 100ms 1837 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1838 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1839 btstack_run_loop_add_timer(&hci_stack->timeout); 1840 #endif 1841 // send command 1842 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1843 hci_send_cmd(&hci_reset); 1844 break; 1845 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1846 hci_send_cmd(&hci_read_local_version_information); 1847 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1848 break; 1849 1850 #ifndef HAVE_HOST_CONTROLLER_API 1851 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1852 hci_state_reset(); 1853 // prepare reset if command complete not received in 100ms 1854 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1855 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1856 btstack_run_loop_add_timer(&hci_stack->timeout); 1857 // send command 1858 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1859 hci_send_cmd(&hci_reset); 1860 break; 1861 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1862 hci_state_reset(); 1863 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1864 hci_send_cmd(&hci_reset); 1865 break; 1866 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1867 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1868 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1869 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1870 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1871 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1872 break; 1873 } 1874 case HCI_INIT_SET_BD_ADDR: 1875 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1876 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1877 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1878 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1879 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1880 break; 1881 case HCI_INIT_SEND_READ_LOCAL_NAME: 1882 #ifdef ENABLE_CLASSIC 1883 hci_send_cmd(&hci_read_local_name); 1884 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1885 break; 1886 #endif 1887 /* fall through */ 1888 1889 case HCI_INIT_SEND_BAUD_CHANGE: 1890 if (need_baud_change) { 1891 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1892 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1893 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1894 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1895 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1896 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1897 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1898 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1899 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1900 btstack_run_loop_add_timer(&hci_stack->timeout); 1901 } 1902 break; 1903 } 1904 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1905 1906 /* fall through */ 1907 1908 case HCI_INIT_CUSTOM_INIT: 1909 case HCI_INIT_CUSTOM_PRE_INIT: 1910 // Custom initialization 1911 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1912 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1913 bool send_cmd = false; 1914 switch (hci_stack->chipset_result){ 1915 case BTSTACK_CHIPSET_VALID_COMMAND: 1916 send_cmd = true; 1917 switch (hci_stack->substate){ 1918 case HCI_INIT_CUSTOM_INIT: 1919 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1920 break; 1921 case HCI_INIT_CUSTOM_PRE_INIT: 1922 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1923 break; 1924 default: 1925 btstack_assert(false); 1926 break; 1927 } 1928 break; 1929 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1930 send_cmd = true; 1931 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1932 log_info("CSR Warm Boot"); 1933 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1934 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1935 btstack_run_loop_add_timer(&hci_stack->timeout); 1936 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1937 && hci_stack->config 1938 && hci_stack->chipset 1939 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1940 && hci_stack->hci_transport->set_baudrate 1941 && hci_transport_uart_get_main_baud_rate()){ 1942 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1943 } else { 1944 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1945 } 1946 break; 1947 default: 1948 break; 1949 } 1950 1951 if (send_cmd){ 1952 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1953 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1954 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1955 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1956 break; 1957 } 1958 log_info("Init script done"); 1959 1960 // Custom Pre-Init complete, start regular init with HCI Reset 1961 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 1962 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1963 hci_send_cmd(&hci_reset); 1964 break; 1965 } 1966 1967 // Init script download on Broadcom chipsets causes: 1968 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1969 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1970 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1971 1972 // - baud rate to reset, restore UART baud rate if needed 1973 if (need_baud_change) { 1974 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1975 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1976 hci_stack->hci_transport->set_baudrate(baud_rate); 1977 } 1978 1979 uint16_t bcm_delay_ms = 300; 1980 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1981 // -> Work around: wait here. 1982 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1983 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1984 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1985 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1986 btstack_run_loop_add_timer(&hci_stack->timeout); 1987 break; 1988 } 1989 } 1990 #endif 1991 /* fall through */ 1992 1993 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1994 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1995 hci_send_cmd(&hci_read_local_supported_commands); 1996 break; 1997 case HCI_INIT_READ_BD_ADDR: 1998 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1999 hci_send_cmd(&hci_read_bd_addr); 2000 break; 2001 case HCI_INIT_READ_BUFFER_SIZE: 2002 // only read buffer size if supported 2003 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2004 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2005 hci_send_cmd(&hci_read_buffer_size); 2006 break; 2007 } 2008 2009 /* fall through */ 2010 2011 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2012 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2013 hci_send_cmd(&hci_read_local_supported_features); 2014 break; 2015 2016 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2017 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2018 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2019 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2020 break; 2021 case HCI_INIT_HOST_BUFFER_SIZE: 2022 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2023 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2024 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2025 break; 2026 #endif 2027 2028 case HCI_INIT_SET_EVENT_MASK: 2029 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2030 if (hci_le_supported()){ 2031 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2032 } else { 2033 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2034 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2035 } 2036 break; 2037 2038 case HCI_INIT_SET_EVENT_MASK_2: 2039 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2040 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2041 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2042 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2043 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2044 // Encryption Change Event v2 - bit 25 2045 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2046 break; 2047 } 2048 2049 #ifdef ENABLE_CLASSIC 2050 /* fall through */ 2051 2052 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2053 if (hci_classic_supported() && gap_ssp_supported()){ 2054 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2055 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2056 break; 2057 } 2058 2059 /* fall through */ 2060 2061 case HCI_INIT_WRITE_INQUIRY_MODE: 2062 if (hci_classic_supported()){ 2063 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2064 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2065 break; 2066 } 2067 2068 /* fall through */ 2069 2070 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2071 // skip write secure connections host support if not supported or disabled 2072 if (hci_classic_supported() && hci_stack->secure_connections_enable 2073 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2074 hci_stack->secure_connections_active = true; 2075 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2076 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2077 break; 2078 } 2079 2080 /* fall through */ 2081 2082 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2083 // skip set min encryption key size 2084 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2085 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2086 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2087 break; 2088 } 2089 2090 #ifdef ENABLE_SCO_OVER_HCI 2091 /* fall through */ 2092 2093 // only sent if ENABLE_SCO_OVER_HCI is defined 2094 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2095 // skip write synchronous flow control if not supported 2096 if (hci_classic_supported() 2097 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2098 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2099 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2100 break; 2101 } 2102 /* fall through */ 2103 2104 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2105 // skip write default erroneous data reporting if not supported 2106 if (hci_classic_supported() 2107 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2108 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2109 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2110 break; 2111 } 2112 #endif 2113 2114 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2115 /* fall through */ 2116 2117 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2118 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2119 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2120 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2121 #ifdef ENABLE_SCO_OVER_HCI 2122 log_info("BCM: Route SCO data via HCI transport"); 2123 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2124 #endif 2125 #ifdef ENABLE_SCO_OVER_PCM 2126 log_info("BCM: Route SCO data via PCM interface"); 2127 #ifdef ENABLE_BCM_PCM_WBS 2128 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2129 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2130 #else 2131 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2132 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2133 #endif 2134 #endif 2135 break; 2136 } 2137 #endif 2138 2139 #ifdef ENABLE_SCO_OVER_PCM 2140 /* fall through */ 2141 2142 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2143 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2144 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2145 log_info("BCM: Config PCM interface for I2S"); 2146 #ifdef ENABLE_BCM_PCM_WBS 2147 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2148 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2149 #else 2150 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2151 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2152 #endif 2153 break; 2154 } 2155 #endif 2156 #endif 2157 2158 #ifdef ENABLE_BLE 2159 /* fall through */ 2160 2161 // LE INIT 2162 case HCI_INIT_LE_READ_BUFFER_SIZE: 2163 if (hci_le_supported()){ 2164 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2165 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2166 hci_send_cmd(&hci_le_read_buffer_size_v2); 2167 } else { 2168 hci_send_cmd(&hci_le_read_buffer_size); 2169 } 2170 break; 2171 } 2172 2173 /* fall through */ 2174 2175 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2176 // skip write le host if not supported (e.g. on LE only EM9301) 2177 if (hci_le_supported() 2178 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2179 // LE Supported Host = 1, Simultaneous Host = 0 2180 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2181 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2182 break; 2183 } 2184 2185 /* fall through */ 2186 2187 case HCI_INIT_LE_SET_EVENT_MASK: 2188 if (hci_le_supported()){ 2189 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2190 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2191 break; 2192 } 2193 #endif 2194 2195 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2196 /* fall through */ 2197 2198 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2199 if (hci_le_supported() 2200 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2201 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2202 hci_send_cmd(&hci_le_read_maximum_data_length); 2203 break; 2204 } 2205 2206 /* fall through */ 2207 2208 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2209 if (hci_le_supported() 2210 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2211 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2212 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2213 break; 2214 } 2215 #endif 2216 2217 #ifdef ENABLE_LE_CENTRAL 2218 /* fall through */ 2219 2220 case HCI_INIT_READ_WHITE_LIST_SIZE: 2221 if (hci_le_supported()){ 2222 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2223 hci_send_cmd(&hci_le_read_white_list_size); 2224 break; 2225 } 2226 2227 #endif 2228 2229 #ifdef ENABLE_LE_PERIPHERAL 2230 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2231 /* fall through */ 2232 2233 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2234 if (hci_extended_advertising_supported()){ 2235 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2236 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2237 break; 2238 } 2239 #endif 2240 #endif 2241 /* fall through */ 2242 2243 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2244 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2245 if (hci_le_supported()) { 2246 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2247 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2248 break; 2249 } 2250 #endif 2251 2252 /* fall through */ 2253 2254 case HCI_INIT_DONE: 2255 hci_stack->substate = HCI_INIT_DONE; 2256 // main init sequence complete 2257 #ifdef ENABLE_CLASSIC 2258 // check if initial Classic GAP Tasks are completed 2259 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2260 hci_run_gap_tasks_classic(); 2261 break; 2262 } 2263 #endif 2264 #ifdef ENABLE_BLE 2265 #ifdef ENABLE_LE_CENTRAL 2266 // check if initial LE GAP Tasks are completed 2267 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2268 hci_run_general_gap_le(); 2269 break; 2270 } 2271 #endif 2272 #endif 2273 hci_init_done(); 2274 break; 2275 2276 default: 2277 return; 2278 } 2279 } 2280 2281 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2282 bool command_completed = false; 2283 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2284 uint16_t opcode = little_endian_read_16(packet,3); 2285 if (opcode == hci_stack->last_cmd_opcode){ 2286 command_completed = true; 2287 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2288 } else { 2289 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2290 } 2291 } 2292 2293 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2294 uint8_t status = packet[2]; 2295 uint16_t opcode = little_endian_read_16(packet,4); 2296 if (opcode == hci_stack->last_cmd_opcode){ 2297 if (status){ 2298 command_completed = true; 2299 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2300 } else { 2301 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2302 } 2303 } else { 2304 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2305 } 2306 } 2307 #ifndef HAVE_HOST_CONTROLLER_API 2308 // Vendor == CSR 2309 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2310 // TODO: track actual command 2311 command_completed = true; 2312 } 2313 2314 // Vendor == Toshiba 2315 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2316 // TODO: track actual command 2317 command_completed = true; 2318 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2319 hci_stack->num_cmd_packets = 1; 2320 } 2321 #endif 2322 2323 return command_completed; 2324 } 2325 2326 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2327 2328 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2329 2330 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2331 2332 #ifndef HAVE_HOST_CONTROLLER_API 2333 2334 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2335 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2336 // 2337 // HCI Reset 2338 // Timeout 100 ms 2339 // HCI Reset 2340 // Command Complete Reset 2341 // HCI Read Local Version Information 2342 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2343 // hang... 2344 // 2345 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2346 if (!command_completed 2347 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2348 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2349 2350 uint16_t opcode = little_endian_read_16(packet,3); 2351 if (opcode == hci_reset.opcode){ 2352 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2353 return; 2354 } 2355 } 2356 2357 // CSR & H5 2358 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2359 if (!command_completed 2360 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2361 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2362 2363 uint16_t opcode = little_endian_read_16(packet,3); 2364 if (opcode == hci_reset.opcode){ 2365 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2366 return; 2367 } 2368 } 2369 2370 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2371 // fix: Correct substate and behave as command below 2372 if (command_completed){ 2373 switch (hci_stack->substate){ 2374 case HCI_INIT_SEND_RESET: 2375 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2376 break; 2377 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2378 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2379 break; 2380 default: 2381 break; 2382 } 2383 } 2384 2385 #endif 2386 2387 if (!command_completed) return; 2388 2389 bool need_baud_change = false; 2390 bool need_addr_change = false; 2391 2392 #ifndef HAVE_HOST_CONTROLLER_API 2393 need_baud_change = hci_stack->config 2394 && hci_stack->chipset 2395 && hci_stack->chipset->set_baudrate_command 2396 && hci_stack->hci_transport->set_baudrate 2397 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2398 2399 need_addr_change = hci_stack->custom_bd_addr_set 2400 && hci_stack->chipset 2401 && hci_stack->chipset->set_bd_addr_command; 2402 #endif 2403 2404 switch(hci_stack->substate){ 2405 2406 #ifndef HAVE_HOST_CONTROLLER_API 2407 case HCI_INIT_SEND_RESET: 2408 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2409 // fix: just correct substate and behave as command below 2410 2411 /* fall through */ 2412 #endif 2413 2414 case HCI_INIT_W4_SEND_RESET: 2415 btstack_run_loop_remove_timer(&hci_stack->timeout); 2416 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2417 return; 2418 2419 #ifndef HAVE_HOST_CONTROLLER_API 2420 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2421 // for STLC2500D, baud rate change already happened. 2422 // for others, baud rate gets changed now 2423 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2424 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2425 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2426 hci_stack->hci_transport->set_baudrate(baud_rate); 2427 } 2428 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2429 return; 2430 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2431 btstack_run_loop_remove_timer(&hci_stack->timeout); 2432 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2433 return; 2434 case HCI_INIT_W4_CUSTOM_INIT: 2435 // repeat custom init 2436 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2437 return; 2438 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2439 // repeat custom init 2440 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2441 return; 2442 #endif 2443 2444 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2445 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2446 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2447 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2448 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2449 return; 2450 } 2451 if (need_addr_change){ 2452 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2453 return; 2454 } 2455 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2456 return; 2457 #ifndef HAVE_HOST_CONTROLLER_API 2458 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2459 if (need_baud_change){ 2460 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2461 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2462 hci_stack->hci_transport->set_baudrate(baud_rate); 2463 } 2464 if (need_addr_change){ 2465 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2466 return; 2467 } 2468 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2469 return; 2470 case HCI_INIT_W4_SET_BD_ADDR: 2471 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2472 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2473 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2474 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2475 return; 2476 } 2477 // skipping st warm boot 2478 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2479 return; 2480 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2481 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2482 return; 2483 #endif 2484 2485 case HCI_INIT_DONE: 2486 // set state if we came here by fall through 2487 hci_stack->substate = HCI_INIT_DONE; 2488 return; 2489 2490 default: 2491 break; 2492 } 2493 hci_initializing_next_state(); 2494 } 2495 2496 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2497 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2498 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2499 // check if we have been aware of the HCI connection 2500 switch (conn->state){ 2501 case SENT_CREATE_CONNECTION: 2502 case RECEIVED_CONNECTION_REQUEST: 2503 case ACCEPTED_CONNECTION_REQUEST: 2504 break; 2505 default: 2506 return; 2507 } 2508 2509 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2510 bd_addr_t bd_address; 2511 (void)memcpy(&bd_address, conn->address, 6); 2512 2513 #ifdef ENABLE_CLASSIC 2514 // cache needed data 2515 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2516 #endif 2517 2518 // connection failed, remove entry 2519 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2520 btstack_memory_hci_connection_free( conn ); 2521 2522 #ifdef ENABLE_CLASSIC 2523 // notify client if dedicated bonding 2524 if (notify_dedicated_bonding_failed){ 2525 log_info("hci notify_dedicated_bonding_failed"); 2526 hci_emit_dedicated_bonding_result(bd_address, status); 2527 } 2528 2529 // if authentication error, also delete link key 2530 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2531 gap_drop_link_key_for_bd_addr(bd_address); 2532 } 2533 #else 2534 UNUSED(status); 2535 #endif 2536 } 2537 2538 #ifdef ENABLE_CLASSIC 2539 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2540 // SSP Controller 2541 if (features[6] & (1 << 3)){ 2542 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2543 } 2544 // eSCO 2545 if (features[3] & (1<<7)){ 2546 conn->remote_supported_features[0] |= 1; 2547 } 2548 // Extended features 2549 if (features[7] & (1<<7)){ 2550 conn->remote_supported_features[0] |= 2; 2551 } 2552 // SCO packet types 2553 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2554 } 2555 2556 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2557 // SSP Host 2558 if (features[0] & (1 << 0)){ 2559 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2560 } 2561 // SC Host 2562 if (features[0] & (1 << 3)){ 2563 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2564 } 2565 } 2566 2567 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2568 // SC Controller 2569 if (features[1] & (1 << 0)){ 2570 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2571 } 2572 } 2573 2574 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2575 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2576 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2577 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2578 if (conn->bonding_flags & BONDING_DEDICATED){ 2579 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2580 } 2581 } 2582 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2583 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2584 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2585 } 2586 2587 #endif 2588 2589 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2590 // handle BT initialization 2591 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2592 hci_initializing_event_handler(packet, size); 2593 } 2594 2595 // help with BT sleep 2596 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2597 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2598 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2599 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2600 hci_initializing_next_state(); 2601 } 2602 } 2603 2604 #ifdef ENABLE_CLASSIC 2605 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2606 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2607 conn->requested_security_level = LEVEL_0; 2608 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2609 hci_emit_security_level(conn->con_handle, security_level); 2610 2611 // dedicated bonding 2612 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2613 conn->bonding_flags &= ~BONDING_DEDICATED; 2614 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2615 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2616 // emit dedicated bonding complete, don't disconnect 2617 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2618 #else 2619 // request disconnect, event is emitted after disconnect 2620 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2621 #endif 2622 } 2623 } 2624 2625 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2626 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2627 conn->encryption_key_size = encryption_key_size; 2628 2629 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2630 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2631 hci_handle_mutual_authentication_completed(conn); 2632 } else { 2633 // otherwise trigger remote feature request and send authentication request 2634 hci_trigger_remote_features_for_connection(conn); 2635 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2636 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2637 } 2638 } 2639 } 2640 #endif 2641 2642 static void hci_store_local_supported_commands(const uint8_t * packet){ 2643 // create mapping table 2644 #define X(name, offset, bit) { offset, bit }, 2645 static struct { 2646 uint8_t byte_offset; 2647 uint8_t bit_position; 2648 } supported_hci_commands_map [] = { 2649 SUPPORTED_HCI_COMMANDS 2650 }; 2651 #undef X 2652 2653 // create names for debug purposes 2654 #ifdef ENABLE_LOG_DEBUG 2655 #define X(name, offset, bit) #name, 2656 static const char * command_names[] = { 2657 SUPPORTED_HCI_COMMANDS 2658 }; 2659 #undef X 2660 #endif 2661 2662 hci_stack->local_supported_commands = 0; 2663 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2664 uint16_t i; 2665 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2666 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2667 #ifdef ENABLE_LOG_DEBUG 2668 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); 2669 #else 2670 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2671 #endif 2672 hci_stack->local_supported_commands |= (1LU << i); 2673 } 2674 } 2675 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2676 } 2677 2678 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2679 UNUSED(size); 2680 2681 uint16_t manufacturer; 2682 #ifdef ENABLE_CLASSIC 2683 hci_con_handle_t handle; 2684 hci_connection_t * conn; 2685 #endif 2686 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2687 uint8_t status; 2688 #endif 2689 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2690 le_audio_cig_t * cig; 2691 #endif 2692 2693 // get num cmd packets - limit to 1 to reduce complexity 2694 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2695 2696 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2697 switch (opcode){ 2698 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2699 if (packet[5]) break; 2700 // terminate, name 248 chars 2701 packet[6+248] = 0; 2702 log_info("local name: %s", &packet[6]); 2703 break; 2704 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2705 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2706 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2707 uint16_t acl_len = little_endian_read_16(packet, 6); 2708 uint16_t sco_len = packet[8]; 2709 2710 // determine usable ACL/SCO payload size 2711 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2712 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2713 2714 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2715 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2716 2717 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2718 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2719 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2720 } 2721 break; 2722 case HCI_OPCODE_HCI_READ_RSSI: 2723 if (packet[5] == ERROR_CODE_SUCCESS){ 2724 uint8_t event[5]; 2725 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2726 event[1] = 3; 2727 (void)memcpy(&event[2], &packet[6], 3); 2728 hci_emit_event(event, sizeof(event), 1); 2729 } 2730 break; 2731 #ifdef ENABLE_BLE 2732 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2733 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2734 hci_stack->le_iso_packets_total_num = packet[11]; 2735 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2736 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2737 2738 /* fall through */ 2739 2740 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2741 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2742 hci_stack->le_acl_packets_total_num = packet[8]; 2743 // determine usable ACL payload size 2744 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2745 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2746 } 2747 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); 2748 break; 2749 #endif 2750 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2751 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2752 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2753 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2754 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); 2755 break; 2756 #endif 2757 #ifdef ENABLE_LE_CENTRAL 2758 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2759 hci_stack->le_whitelist_capacity = packet[6]; 2760 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2761 break; 2762 #endif 2763 #ifdef ENABLE_LE_PERIPHERAL 2764 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2765 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2766 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2767 break; 2768 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2769 if (hci_stack->le_advertising_set_in_current_command != 0) { 2770 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2771 hci_stack->le_advertising_set_in_current_command = 0; 2772 if (advertising_set == NULL) break; 2773 uint8_t adv_status = packet[6]; 2774 uint8_t tx_power = packet[7]; 2775 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 }; 2776 if (adv_status == 0){ 2777 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2778 } 2779 hci_emit_event(event, sizeof(event), 1); 2780 } 2781 break; 2782 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2783 if (hci_stack->le_advertising_set_in_current_command != 0) { 2784 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2785 hci_stack->le_advertising_set_in_current_command = 0; 2786 if (advertising_set == NULL) break; 2787 uint8_t adv_status = packet[5]; 2788 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2789 if (adv_status == 0){ 2790 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2791 } 2792 hci_emit_event(event, sizeof(event), 1); 2793 } 2794 break; 2795 #endif 2796 #endif 2797 case HCI_OPCODE_HCI_READ_BD_ADDR: 2798 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2799 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)); 2800 #ifdef ENABLE_CLASSIC 2801 if (hci_stack->link_key_db){ 2802 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2803 } 2804 #endif 2805 break; 2806 #ifdef ENABLE_CLASSIC 2807 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2808 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2809 break; 2810 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2811 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2812 if (status == ERROR_CODE_SUCCESS) { 2813 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2814 } else { 2815 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2816 } 2817 break; 2818 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2819 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2820 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2821 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2822 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2823 hci_emit_event(event, sizeof(event), 1); 2824 } 2825 break; 2826 #endif 2827 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2828 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2829 2830 #ifdef ENABLE_CLASSIC 2831 // determine usable ACL packet types based on host buffer size and supported features 2832 hci_stack->usable_packet_types_acl = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2833 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2834 // determine usable SCO packet types based on supported features 2835 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2836 &hci_stack->local_supported_features[0]); 2837 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2838 #endif 2839 // Classic/LE 2840 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2841 break; 2842 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2843 manufacturer = little_endian_read_16(packet, 10); 2844 // map Cypress & Infineon to Broadcom 2845 switch (manufacturer){ 2846 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2847 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2848 log_info("Treat Cypress/Infineon as Broadcom"); 2849 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2850 little_endian_store_16(packet, 10, manufacturer); 2851 break; 2852 default: 2853 break; 2854 } 2855 hci_stack->manufacturer = manufacturer; 2856 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2857 break; 2858 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2859 hci_store_local_supported_commands(packet); 2860 break; 2861 #ifdef ENABLE_CLASSIC 2862 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2863 if (packet[5]) return; 2864 hci_stack->synchronous_flow_control_enabled = 1; 2865 break; 2866 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2867 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2868 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2869 conn = hci_connection_for_handle(handle); 2870 if (conn != NULL) { 2871 uint8_t key_size = 0; 2872 if (status == 0){ 2873 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2874 log_info("Handle %04x key Size: %u", handle, key_size); 2875 } else { 2876 key_size = 1; 2877 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2878 } 2879 hci_handle_read_encryption_key_size_complete(conn, key_size); 2880 } 2881 break; 2882 // assert pairing complete event is emitted. 2883 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2884 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2885 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2886 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2887 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2888 // lookup connection by gap pairing addr 2889 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2890 if (conn == NULL) break; 2891 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2892 break; 2893 2894 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2895 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2896 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2897 uint8_t event[67]; 2898 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2899 event[1] = 65; 2900 (void)memset(&event[2], 0, 65); 2901 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2902 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2903 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2904 event[2] = 3; 2905 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2906 } else { 2907 event[2] = 1; 2908 } 2909 } 2910 hci_emit_event(event, sizeof(event), 0); 2911 break; 2912 } 2913 2914 // note: only needed if user does not provide OOB data 2915 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2916 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2917 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2918 if (conn == NULL) break; 2919 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2920 break; 2921 #endif 2922 #endif 2923 #ifdef ENABLE_BLE 2924 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2925 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2926 // lookup CIG 2927 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2928 if (cig != NULL){ 2929 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2930 uint8_t i = 0; 2931 if (status == ERROR_CODE_SUCCESS){ 2932 // assign CIS handles to pre-allocated CIS 2933 btstack_linked_list_iterator_t it; 2934 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2935 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2936 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2937 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2938 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2939 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2940 iso_stream->cis_handle = cis_handle; 2941 cig->cis_con_handles[i] = cis_handle; 2942 i++; 2943 } 2944 } 2945 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2946 hci_emit_cig_created(cig, status); 2947 } else { 2948 hci_emit_cig_created(cig, status); 2949 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2950 } 2951 } 2952 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2953 break; 2954 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2955 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2956 if (status != ERROR_CODE_SUCCESS){ 2957 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2958 } 2959 break; 2960 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2961 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2962 if (status != ERROR_CODE_SUCCESS){ 2963 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2964 } 2965 break; 2966 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2967 // lookup BIG by state 2968 btstack_linked_list_iterator_t it; 2969 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2970 while (btstack_linked_list_iterator_has_next(&it)) { 2971 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2972 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2973 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2974 if (status == ERROR_CODE_SUCCESS){ 2975 big->state_vars.next_bis++; 2976 if (big->state_vars.next_bis == big->num_bis){ 2977 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2978 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2979 } else { 2980 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2981 } 2982 } else { 2983 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2984 big->state_vars.status = status; 2985 } 2986 return; 2987 } 2988 } 2989 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2990 while (btstack_linked_list_iterator_has_next(&it)) { 2991 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2992 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2993 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2994 if (status == ERROR_CODE_SUCCESS){ 2995 big_sync->state_vars.next_bis++; 2996 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2997 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2998 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2999 } else { 3000 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3001 } 3002 } else { 3003 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3004 big_sync->state_vars.status = status; 3005 } 3006 return; 3007 } 3008 } 3009 // Lookup CIS via active group operation 3010 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3011 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3012 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3013 3014 // lookup CIS by state 3015 btstack_linked_list_iterator_t it; 3016 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3017 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 3018 while (btstack_linked_list_iterator_has_next(&it)){ 3019 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3020 handle = iso_stream->cis_handle; 3021 bool emit_cis_created = false; 3022 switch (iso_stream->state){ 3023 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3024 if (status != ERROR_CODE_SUCCESS){ 3025 emit_cis_created = true; 3026 break; 3027 } 3028 if (iso_stream->max_sdu_c_to_p > 0){ 3029 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3030 } else { 3031 emit_cis_created = true; 3032 } 3033 break; 3034 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3035 emit_cis_created = true; 3036 break; 3037 default: 3038 break; 3039 } 3040 if (emit_cis_created){ 3041 hci_cis_handle_created(iso_stream, status); 3042 } 3043 } 3044 } else { 3045 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3046 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3047 if (cig != NULL) { 3048 // emit cis created if all ISO Paths have been created 3049 // assume we are central 3050 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3051 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3052 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3053 // if outgoing has been setup, or incoming was setup but outgoing not required 3054 if ((cis_direction == 1) || (outgoing_needed == false)){ 3055 // lookup iso stream by cig/cis 3056 while (btstack_linked_list_iterator_has_next(&it)) { 3057 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3058 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3059 hci_cis_handle_created(iso_stream, status); 3060 } 3061 } 3062 } 3063 // next state 3064 cig->state_vars.next_cis++; 3065 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3066 } 3067 } 3068 } 3069 break; 3070 } 3071 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3072 // lookup BIG by state 3073 btstack_linked_list_iterator_t it; 3074 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3075 while (btstack_linked_list_iterator_has_next(&it)) { 3076 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3077 uint8_t big_handle = big_sync->big_handle; 3078 switch (big_sync->state){ 3079 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3080 btstack_linked_list_iterator_remove(&it); 3081 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3082 return; 3083 default: 3084 btstack_linked_list_iterator_remove(&it); 3085 hci_emit_big_sync_stopped(big_handle); 3086 return; 3087 } 3088 } 3089 break; 3090 } 3091 #endif 3092 #endif 3093 default: 3094 break; 3095 } 3096 } 3097 3098 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3099 UNUSED(size); 3100 3101 // get num cmd packets - limit to 1 to reduce complexity 3102 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3103 3104 // get opcode and command status 3105 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3106 3107 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3108 uint8_t status = hci_event_command_status_get_status(packet); 3109 #endif 3110 3111 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3112 bd_addr_type_t addr_type; 3113 bd_addr_t addr; 3114 #endif 3115 3116 switch (opcode){ 3117 #ifdef ENABLE_CLASSIC 3118 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3119 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3120 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3121 #endif 3122 #ifdef ENABLE_LE_CENTRAL 3123 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3124 #endif 3125 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3126 addr_type = hci_stack->outgoing_addr_type; 3127 memcpy(addr, hci_stack->outgoing_addr, 6); 3128 3129 // reset outgoing address info 3130 memset(hci_stack->outgoing_addr, 0, 6); 3131 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3132 3133 // on error 3134 if (status != ERROR_CODE_SUCCESS){ 3135 #ifdef ENABLE_LE_CENTRAL 3136 if (hci_is_le_connection_type(addr_type)){ 3137 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3138 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3139 } 3140 #endif 3141 // error => outgoing connection failed 3142 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3143 if (conn != NULL){ 3144 hci_handle_connection_failed(conn, status); 3145 } 3146 } 3147 break; 3148 #endif 3149 #ifdef ENABLE_CLASSIC 3150 case HCI_OPCODE_HCI_INQUIRY: 3151 if (status == ERROR_CODE_SUCCESS) { 3152 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3153 } else { 3154 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3155 } 3156 break; 3157 #endif 3158 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3159 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3160 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3161 if (status == ERROR_CODE_SUCCESS){ 3162 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3163 } else { 3164 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3165 } 3166 break; 3167 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3168 default: 3169 break; 3170 } 3171 } 3172 3173 #ifdef ENABLE_BLE 3174 static void event_handle_le_connection_complete(const uint8_t * packet){ 3175 bd_addr_t addr; 3176 bd_addr_type_t addr_type; 3177 hci_connection_t * conn; 3178 3179 // read fields 3180 uint8_t status = packet[3]; 3181 hci_role_t role = (hci_role_t) packet[6]; 3182 3183 // support different connection complete events 3184 uint16_t conn_interval; 3185 switch (packet[2]){ 3186 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3187 conn_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3188 break; 3189 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3190 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3191 conn_interval = hci_subevent_le_enhanced_connection_complete_v1_get_conn_interval(packet); 3192 break; 3193 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3194 conn_interval = hci_subevent_le_enhanced_connection_complete_v2_get_conn_interval(packet); 3195 break; 3196 #endif 3197 default: 3198 btstack_unreachable(); 3199 return; 3200 } 3201 3202 // Connection management 3203 reverse_bd_addr(&packet[8], addr); 3204 addr_type = (bd_addr_type_t)packet[7]; 3205 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3206 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3207 3208 #ifdef ENABLE_LE_CENTRAL 3209 // handle error: error is reported only to the initiator -> outgoing connection 3210 if (status){ 3211 3212 // handle cancelled outgoing connection 3213 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3214 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3215 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3216 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3217 // reset state 3218 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3219 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3220 // get outgoing connection conn struct for direct connect 3221 conn = gap_get_outgoing_connection(); 3222 } 3223 3224 // outgoing le connection establishment is done 3225 if (conn){ 3226 // remove entry 3227 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3228 btstack_memory_hci_connection_free( conn ); 3229 } 3230 return; 3231 } 3232 #endif 3233 3234 // on success, both hosts receive connection complete event 3235 if (role == HCI_ROLE_MASTER){ 3236 #ifdef ENABLE_LE_CENTRAL 3237 // if we're master on an le connection, it was an outgoing connection and we're done with it 3238 // note: no hci_connection_t object exists yet for connect with whitelist 3239 if (hci_is_le_connection_type(addr_type)){ 3240 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3241 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3242 } 3243 #endif 3244 } else { 3245 #ifdef ENABLE_LE_PERIPHERAL 3246 // if we're slave, it was an incoming connection, advertisements have stopped 3247 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3248 #endif 3249 } 3250 3251 // LE connections are auto-accepted, so just create a connection if there isn't one already 3252 if (!conn){ 3253 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3254 } 3255 3256 // no memory, sorry. 3257 if (!conn){ 3258 return; 3259 } 3260 3261 conn->state = OPEN; 3262 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3263 conn->le_connection_interval = conn_interval; 3264 3265 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3266 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3267 3268 #ifdef ENABLE_LE_PERIPHERAL 3269 if (role == HCI_ROLE_SLAVE){ 3270 hci_update_advertisements_enabled_for_current_roles(); 3271 } 3272 #endif 3273 3274 // init unenhanced att bearer mtu 3275 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3276 conn->att_connection.mtu_exchanged = false; 3277 3278 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3279 3280 // restart timer 3281 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3282 // btstack_run_loop_add_timer(&conn->timeout); 3283 3284 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3285 3286 hci_emit_nr_connections_changed(); 3287 } 3288 #endif 3289 3290 #ifdef ENABLE_CLASSIC 3291 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){ 3292 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3293 // LEVEL_4 is tested by l2cap 3294 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3295 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3296 if (level >= LEVEL_3){ 3297 // MITM not possible without keyboard or display 3298 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3299 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3300 3301 // MITM possible if one side has keyboard and the other has keyboard or display 3302 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3303 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3304 3305 // MITM not possible if one side has only display and other side has no keyboard 3306 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3307 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3308 } 3309 // LEVEL 2 requires SSP, which is a given 3310 return true; 3311 } 3312 3313 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3314 // get requested security level 3315 gap_security_level_t requested_security_level = conn->requested_security_level; 3316 if (hci_stack->gap_secure_connections_only_mode){ 3317 requested_security_level = LEVEL_4; 3318 } 3319 3320 // assess security: LEVEL 4 requires SC 3321 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3322 if ((requested_security_level == LEVEL_4) && 3323 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3324 !hci_remote_sc_enabled(conn)){ 3325 log_info("Level 4 required, but SC not supported -> abort"); 3326 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3327 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3328 return; 3329 } 3330 3331 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3332 // - GAP/MOD/NBON/BV-02-C 3333 // - GAP/DM/NBON/BV-01-C 3334 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3335 switch (conn->io_cap_response_auth_req){ 3336 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3337 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3338 if (hci_stack->bondable == false){ 3339 log_info("Dedicated vs. non-bondable -> abort"); 3340 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3341 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3342 return; 3343 } 3344 default: 3345 break; 3346 } 3347 } 3348 3349 // assess security based on io capabilities 3350 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3351 // responder: fully validate io caps of both sides as well as OOB data 3352 bool security_possible = false; 3353 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3354 3355 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3356 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3357 // so we merge the OOB data availability 3358 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3359 if (conn->classic_oob_c_192 != NULL){ 3360 have_oob_data |= 1; 3361 } 3362 if (conn->classic_oob_c_256 != NULL){ 3363 have_oob_data |= 2; 3364 } 3365 // for up to Level 3, either P-192 as well as P-256 will do 3366 // 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 3367 // if remote does not SC, we should not receive P-256 data either 3368 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3369 security_possible = true; 3370 } 3371 // for Level 4, P-256 is needed 3372 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3373 security_possible = true; 3374 } 3375 #endif 3376 3377 if (security_possible == false){ 3378 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3379 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3380 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3381 return; 3382 } 3383 } else { 3384 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3385 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3386 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3387 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3388 log_info("Level 3+ required, but no input/output -> abort"); 3389 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3390 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3391 return; 3392 } 3393 #endif 3394 #endif 3395 } 3396 3397 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3398 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3399 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3400 } else { 3401 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3402 } 3403 #endif 3404 } 3405 3406 #endif 3407 3408 static void event_handler(uint8_t *packet, uint16_t size){ 3409 3410 uint16_t event_length = packet[1]; 3411 3412 // assert packet is complete 3413 if (size != (event_length + 2u)){ 3414 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3415 return; 3416 } 3417 3418 hci_con_handle_t handle; 3419 hci_connection_t * conn; 3420 int i; 3421 3422 #ifdef ENABLE_CLASSIC 3423 hci_link_type_t link_type; 3424 bd_addr_t addr; 3425 bd_addr_type_t addr_type; 3426 #endif 3427 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3428 hci_iso_stream_t * iso_stream; 3429 le_audio_big_t * big; 3430 le_audio_big_sync_t * big_sync; 3431 #endif 3432 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3433 btstack_linked_list_iterator_t it; 3434 #endif 3435 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3436 uint8_t advertising_handle; 3437 #endif 3438 3439 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3440 3441 switch (hci_event_packet_get_type(packet)) { 3442 3443 case HCI_EVENT_COMMAND_COMPLETE: 3444 handle_command_complete_event(packet, size); 3445 break; 3446 3447 case HCI_EVENT_COMMAND_STATUS: 3448 handle_command_status_event(packet, size); 3449 break; 3450 3451 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3452 if (size < 3) return; 3453 uint16_t num_handles = packet[2]; 3454 if (size != (3u + num_handles * 4u)) return; 3455 #ifdef ENABLE_CLASSIC 3456 bool notify_sco = false; 3457 #endif 3458 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3459 bool notify_iso = false; 3460 #endif 3461 uint16_t offset = 3; 3462 for (i=0; i<num_handles;i++){ 3463 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3464 offset += 2u; 3465 uint16_t num_packets = little_endian_read_16(packet, offset); 3466 offset += 2u; 3467 3468 conn = hci_connection_for_handle(handle); 3469 if (conn != NULL) { 3470 3471 if (conn->num_packets_sent >= num_packets) { 3472 conn->num_packets_sent -= num_packets; 3473 } else { 3474 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3475 conn->num_packets_sent = 0; 3476 } 3477 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3478 #ifdef ENABLE_CLASSIC 3479 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3480 notify_sco = true; 3481 } 3482 #endif 3483 } 3484 3485 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3486 hci_controller_dump_packets(); 3487 #endif 3488 3489 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3490 if (conn == NULL){ 3491 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3492 if (iso_stream != NULL){ 3493 if (iso_stream->num_packets_sent >= num_packets) { 3494 iso_stream->num_packets_sent -= num_packets; 3495 } else { 3496 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3497 iso_stream->num_packets_sent = 0; 3498 } 3499 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3500 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3501 if (big != NULL){ 3502 big->num_completed_timestamp_current_valid = true; 3503 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3504 } 3505 } 3506 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3507 num_packets, handle, iso_stream->num_packets_sent); 3508 notify_iso = true; 3509 } 3510 } 3511 #endif 3512 } 3513 3514 #ifdef ENABLE_CLASSIC 3515 if (notify_sco){ 3516 hci_notify_if_sco_can_send_now(); 3517 } 3518 #endif 3519 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3520 if (notify_iso){ 3521 hci_iso_notify_can_send_now(); 3522 } 3523 #endif 3524 break; 3525 } 3526 3527 #ifdef ENABLE_CLASSIC 3528 case HCI_EVENT_FLUSH_OCCURRED: 3529 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3530 handle = hci_event_flush_occurred_get_handle(packet); 3531 conn = hci_connection_for_handle(handle); 3532 if (conn) { 3533 log_info("Flush occurred, disconnect 0x%04x", handle); 3534 conn->state = SEND_DISCONNECT; 3535 } 3536 break; 3537 3538 case HCI_EVENT_INQUIRY_COMPLETE: 3539 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3540 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3541 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3542 hci_emit_event(event, sizeof(event), 1); 3543 } 3544 break; 3545 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3546 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3547 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3548 } 3549 break; 3550 case HCI_EVENT_CONNECTION_REQUEST: 3551 reverse_bd_addr(&packet[2], addr); 3552 link_type = (hci_link_type_t) packet[11]; 3553 3554 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3555 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3556 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3557 bd_addr_copy(hci_stack->decline_addr, addr); 3558 break; 3559 } 3560 3561 if (hci_stack->gap_classic_accept_callback != NULL){ 3562 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3563 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3564 bd_addr_copy(hci_stack->decline_addr, addr); 3565 break; 3566 } 3567 } 3568 3569 // TODO: eval COD 8-10 3570 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3571 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3572 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3573 if (!conn) { 3574 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3575 } 3576 if (!conn) { 3577 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3578 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3579 bd_addr_copy(hci_stack->decline_addr, addr); 3580 hci_run(); 3581 // avoid event to higher layer 3582 return; 3583 } 3584 conn->state = RECEIVED_CONNECTION_REQUEST; 3585 // store info about eSCO 3586 if (link_type == HCI_LINK_TYPE_ESCO){ 3587 conn->remote_supported_features[0] |= 1; 3588 } 3589 hci_run(); 3590 break; 3591 3592 case HCI_EVENT_CONNECTION_COMPLETE: 3593 // Connection management 3594 reverse_bd_addr(&packet[5], addr); 3595 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3596 addr_type = BD_ADDR_TYPE_ACL; 3597 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3598 if (conn) { 3599 switch (conn->state){ 3600 // expected states 3601 case ACCEPTED_CONNECTION_REQUEST: 3602 case SENT_CREATE_CONNECTION: 3603 break; 3604 // unexpected state -> ignore 3605 default: 3606 // don't forward event to app 3607 return; 3608 } 3609 if (!packet[2]){ 3610 conn->state = OPEN; 3611 conn->con_handle = little_endian_read_16(packet, 3); 3612 3613 // trigger write supervision timeout if we're master 3614 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3615 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3616 } 3617 3618 // trigger write automatic flush timeout 3619 if (hci_stack->automatic_flush_timeout != 0){ 3620 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3621 } 3622 3623 // restart timer 3624 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3625 btstack_run_loop_add_timer(&conn->timeout); 3626 3627 // trigger remote features for dedicated bonding 3628 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3629 hci_trigger_remote_features_for_connection(conn); 3630 } 3631 3632 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3633 3634 hci_emit_nr_connections_changed(); 3635 } else { 3636 // connection failed 3637 hci_handle_connection_failed(conn, packet[2]); 3638 } 3639 } 3640 break; 3641 3642 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3643 reverse_bd_addr(&packet[5], addr); 3644 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3645 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3646 btstack_assert(conn != NULL); 3647 3648 if (packet[2] != ERROR_CODE_SUCCESS){ 3649 // connection failed, remove entry 3650 hci_handle_connection_failed(conn, packet[2]); 3651 break; 3652 } 3653 3654 conn->state = OPEN; 3655 conn->con_handle = little_endian_read_16(packet, 3); 3656 3657 #ifdef ENABLE_SCO_OVER_HCI 3658 // update SCO 3659 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3660 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3661 } 3662 // trigger can send now 3663 if (hci_have_usb_transport()){ 3664 hci_stack->sco_can_send_now = true; 3665 } 3666 #endif 3667 #ifdef HAVE_SCO_TRANSPORT 3668 // configure sco transport 3669 if (hci_stack->sco_transport != NULL){ 3670 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3671 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3672 } 3673 #endif 3674 break; 3675 3676 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3677 handle = little_endian_read_16(packet, 3); 3678 conn = hci_connection_for_handle(handle); 3679 if (!conn) break; 3680 if (!packet[2]){ 3681 const uint8_t * features = &packet[5]; 3682 hci_handle_remote_features_page_0(conn, features); 3683 3684 // read extended features if possible 3685 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3686 && ((conn->remote_supported_features[0] & 2) != 0)) { 3687 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3688 break; 3689 } 3690 } 3691 hci_handle_remote_features_received(conn); 3692 break; 3693 3694 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3695 handle = little_endian_read_16(packet, 3); 3696 conn = hci_connection_for_handle(handle); 3697 if (!conn) break; 3698 // status = ok, page = 1 3699 if (!packet[2]) { 3700 uint8_t page_number = packet[5]; 3701 uint8_t maximum_page_number = packet[6]; 3702 const uint8_t * features = &packet[7]; 3703 bool done = false; 3704 switch (page_number){ 3705 case 1: 3706 hci_handle_remote_features_page_1(conn, features); 3707 if (maximum_page_number >= 2){ 3708 // get Secure Connections (Controller) from Page 2 if available 3709 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3710 } else { 3711 // otherwise, assume SC (Controller) == SC (Host) 3712 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3713 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3714 } 3715 done = true; 3716 } 3717 break; 3718 case 2: 3719 hci_handle_remote_features_page_2(conn, features); 3720 done = true; 3721 break; 3722 default: 3723 break; 3724 } 3725 if (!done) break; 3726 } 3727 hci_handle_remote_features_received(conn); 3728 break; 3729 3730 case HCI_EVENT_LINK_KEY_REQUEST: 3731 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3732 hci_event_link_key_request_get_bd_addr(packet, addr); 3733 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3734 if (!conn) break; 3735 3736 // lookup link key in db if not cached 3737 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3738 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3739 } 3740 3741 // response sent by hci_run() 3742 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3743 #endif 3744 break; 3745 3746 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3747 hci_event_link_key_request_get_bd_addr(packet, addr); 3748 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3749 if (!conn) break; 3750 3751 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3752 3753 // CVE-2020-26555: ignore NULL link key 3754 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3755 if (btstack_is_null(&packet[8], 16)) break; 3756 3757 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3758 // Change Connection Encryption keeps link key type 3759 if (link_key_type != CHANGED_COMBINATION_KEY){ 3760 conn->link_key_type = link_key_type; 3761 } 3762 3763 // cache link key. link keys stored in little-endian format for legacy reasons 3764 memcpy(&conn->link_key, &packet[8], 16); 3765 3766 // only store link key: 3767 // - if bondable enabled 3768 if (hci_stack->bondable == false) break; 3769 // - if security level sufficient 3770 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3771 // - for SSP, also check if remote side requested bonding as well 3772 if (conn->link_key_type != COMBINATION_KEY){ 3773 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3774 if (!remote_bonding){ 3775 break; 3776 } 3777 } 3778 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3779 break; 3780 } 3781 3782 case HCI_EVENT_PIN_CODE_REQUEST: 3783 hci_event_pin_code_request_get_bd_addr(packet, addr); 3784 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3785 if (!conn) break; 3786 3787 hci_pairing_started(conn, false); 3788 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3789 if (!hci_stack->bondable ){ 3790 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3791 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3792 hci_run(); 3793 return; 3794 } 3795 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3796 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3797 log_info("Level 4 required, but SC not supported -> abort"); 3798 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3799 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3800 hci_run(); 3801 return; 3802 } 3803 break; 3804 3805 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3806 hci_event_io_capability_response_get_bd_addr(packet, addr); 3807 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3808 if (!conn) break; 3809 3810 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3811 hci_pairing_started(conn, true); 3812 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3813 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3814 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3815 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3816 #endif 3817 break; 3818 3819 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3820 hci_event_io_capability_response_get_bd_addr(packet, addr); 3821 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3822 if (!conn) break; 3823 3824 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3825 hci_connection_timestamp(conn); 3826 hci_pairing_started(conn, true); 3827 break; 3828 3829 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3830 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3831 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3832 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3833 if (!conn) break; 3834 3835 hci_connection_timestamp(conn); 3836 3837 hci_pairing_started(conn, true); 3838 3839 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3840 break; 3841 #endif 3842 3843 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3844 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3845 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3846 if (!conn) break; 3847 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3848 if (hci_stack->ssp_auto_accept){ 3849 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3850 }; 3851 } else { 3852 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3853 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3854 // don't forward event to app 3855 hci_run(); 3856 return; 3857 } 3858 break; 3859 3860 case HCI_EVENT_USER_PASSKEY_REQUEST: 3861 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3862 if (hci_stack->ssp_auto_accept){ 3863 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3864 }; 3865 break; 3866 3867 case HCI_EVENT_MODE_CHANGE: 3868 handle = hci_event_mode_change_get_handle(packet); 3869 conn = hci_connection_for_handle(handle); 3870 if (!conn) break; 3871 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3872 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3873 break; 3874 #endif 3875 3876 case HCI_EVENT_ENCRYPTION_CHANGE: 3877 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3878 handle = hci_event_encryption_change_get_connection_handle(packet); 3879 conn = hci_connection_for_handle(handle); 3880 if (!conn) break; 3881 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 3882 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3883 if (encryption_enabled){ 3884 if (hci_is_le_connection(conn)){ 3885 // For LE, we accept connection as encrypted 3886 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3887 } 3888 #ifdef ENABLE_CLASSIC 3889 else { 3890 3891 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3892 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3893 bool connected_uses_aes_ccm = encryption_enabled == 2; 3894 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3895 #ifdef ENABLE_TESTING_SUPPORT 3896 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 3897 // - GAP/SEC/SEM/BI-31-C 3898 // - GAP/SEC/SEM/BI-32-C 3899 // - GAP/SEC/SEM/BI-33-C 3900 3901 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 3902 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 3903 link_key_type_t new_link_key_type; 3904 switch (conn->link_key_type){ 3905 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 3906 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 3907 break; 3908 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 3909 new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 3910 default: 3911 break; 3912 } 3913 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 3914 conn->link_key_type, new_link_key_type); 3915 conn->link_key_type = new_link_key_type; 3916 #else 3917 log_info("SC during pairing, but only E0 now -> abort"); 3918 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3919 break; 3920 #endif 3921 } 3922 3923 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3924 if (connected_uses_aes_ccm){ 3925 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3926 } 3927 3928 #ifdef ENABLE_TESTING_SUPPORT 3929 // work around for issue with PTS dongle 3930 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3931 #endif 3932 // validate encryption key size 3933 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3934 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3935 // already got encryption key size 3936 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3937 } else { 3938 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3939 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3940 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3941 } else { 3942 // if not, pretend everything is perfect 3943 hci_handle_read_encryption_key_size_complete(conn, 16); 3944 } 3945 } 3946 } 3947 #endif 3948 } else { 3949 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3950 } 3951 } else { 3952 uint8_t status = hci_event_encryption_change_get_status(packet); 3953 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3954 conn->bonding_flags &= ~BONDING_DEDICATED; 3955 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3956 conn->bonding_status = status; 3957 } 3958 // trigger security update -> level 0 3959 hci_handle_mutual_authentication_completed(conn); 3960 } 3961 3962 break; 3963 3964 #ifdef ENABLE_CLASSIC 3965 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3966 handle = hci_event_authentication_complete_get_connection_handle(packet); 3967 conn = hci_connection_for_handle(handle); 3968 if (!conn) break; 3969 3970 // clear authentication active flag 3971 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3972 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3973 3974 // authenticated only if auth status == 0 3975 if (hci_event_authentication_complete_get_status(packet) == 0){ 3976 // authenticated 3977 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3978 3979 // If not already encrypted, start encryption 3980 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3981 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3982 break; 3983 } 3984 } 3985 3986 // emit updated security level (will be 0 if not authenticated) 3987 hci_handle_mutual_authentication_completed(conn); 3988 break; 3989 3990 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3991 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3992 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3993 if (!conn) break; 3994 3995 // treat successfully paired connection as authenticated 3996 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3997 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3998 } 3999 4000 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4001 break; 4002 #endif 4003 4004 // HCI_EVENT_DISCONNECTION_COMPLETE 4005 // has been split, to first notify stack before shutting connection down 4006 // see end of function, too. 4007 case HCI_EVENT_DISCONNECTION_COMPLETE: 4008 if (packet[2]) break; // status != 0 4009 handle = little_endian_read_16(packet, 3); 4010 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4011 if (hci_stack->acl_fragmentation_total_size > 0u) { 4012 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4013 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4014 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4015 hci_stack->acl_fragmentation_total_size = 0; 4016 hci_stack->acl_fragmentation_pos = 0; 4017 if (release_buffer){ 4018 hci_release_packet_buffer(); 4019 } 4020 } 4021 } 4022 4023 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4024 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4025 if (hci_stack->iso_fragmentation_total_size > 0u) { 4026 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4027 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4028 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4029 hci_stack->iso_fragmentation_total_size = 0; 4030 hci_stack->iso_fragmentation_pos = 0; 4031 if (release_buffer){ 4032 hci_release_packet_buffer(); 4033 } 4034 } 4035 } 4036 4037 // finalize iso stream for CIS handle 4038 iso_stream = hci_iso_stream_for_con_handle(handle); 4039 if (iso_stream != NULL){ 4040 hci_iso_stream_finalize(iso_stream); 4041 break; 4042 } 4043 4044 // finalize iso stream(s) for ACL handle 4045 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4046 while (btstack_linked_list_iterator_has_next(&it)){ 4047 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4048 if (iso_stream->acl_handle == handle ) { 4049 hci_iso_stream_finalize(iso_stream); 4050 } 4051 } 4052 #endif 4053 4054 conn = hci_connection_for_handle(handle); 4055 if (!conn) break; 4056 #ifdef ENABLE_CLASSIC 4057 // pairing failed if it was ongoing 4058 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4059 #endif 4060 4061 // emit dedicatd bonding event 4062 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4063 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4064 } 4065 4066 // mark connection for shutdown, stop timers, reset state 4067 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4068 hci_connection_stop_timer(conn); 4069 hci_connection_init(conn); 4070 4071 #ifdef ENABLE_BLE 4072 #ifdef ENABLE_LE_PERIPHERAL 4073 // re-enable advertisements for le connections if active 4074 if (hci_is_le_connection(conn)){ 4075 hci_update_advertisements_enabled_for_current_roles(); 4076 } 4077 #endif 4078 #endif 4079 break; 4080 4081 case HCI_EVENT_HARDWARE_ERROR: 4082 log_error("Hardware Error: 0x%02x", packet[2]); 4083 if (hci_stack->hardware_error_callback){ 4084 (*hci_stack->hardware_error_callback)(packet[2]); 4085 } else { 4086 // if no special requests, just reboot stack 4087 hci_power_control_off(); 4088 hci_power_control_on(); 4089 } 4090 break; 4091 4092 #ifdef ENABLE_CLASSIC 4093 case HCI_EVENT_ROLE_CHANGE: 4094 if (packet[2]) break; // status != 0 4095 reverse_bd_addr(&packet[3], addr); 4096 addr_type = BD_ADDR_TYPE_ACL; 4097 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4098 if (!conn) break; 4099 conn->role = (hci_role_t) packet[9]; 4100 break; 4101 #endif 4102 4103 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4104 // release packet buffer only for asynchronous transport and if there are not further fragments 4105 if (hci_transport_synchronous()) { 4106 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4107 return; // instead of break: to avoid re-entering hci_run() 4108 } 4109 hci_stack->acl_fragmentation_tx_active = 0; 4110 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4111 hci_stack->iso_fragmentation_tx_active = 0; 4112 if (hci_stack->iso_fragmentation_total_size) break; 4113 #endif 4114 if (hci_stack->acl_fragmentation_total_size) break; 4115 hci_release_packet_buffer(); 4116 4117 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4118 hci_iso_notify_can_send_now(); 4119 #endif 4120 // L2CAP receives this event via the hci_emit_event below 4121 4122 #ifdef ENABLE_CLASSIC 4123 // For SCO, we do the can_send_now_check here 4124 hci_notify_if_sco_can_send_now(); 4125 #endif 4126 break; 4127 4128 #ifdef ENABLE_CLASSIC 4129 case HCI_EVENT_SCO_CAN_SEND_NOW: 4130 // For SCO, we do the can_send_now_check here 4131 hci_stack->sco_can_send_now = true; 4132 hci_notify_if_sco_can_send_now(); 4133 return; 4134 4135 // explode inquriy results for easier consumption 4136 case HCI_EVENT_INQUIRY_RESULT: 4137 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4138 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4139 gap_inquiry_explode(packet, size); 4140 break; 4141 #endif 4142 4143 #ifdef ENABLE_BLE 4144 case HCI_EVENT_LE_META: 4145 switch (packet[2]){ 4146 #ifdef ENABLE_LE_CENTRAL 4147 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4148 if (!hci_stack->le_scanning_enabled) break; 4149 le_handle_advertisement_report(packet, size); 4150 break; 4151 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4152 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4153 if (!hci_stack->le_scanning_enabled) break; 4154 le_handle_extended_advertisement_report(packet, size); 4155 break; 4156 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4157 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4158 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4159 break; 4160 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4161 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4162 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4163 while (btstack_linked_list_iterator_has_next(&it)) { 4164 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4165 if (advertising_set->advertising_handle == advertising_handle){ 4166 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4167 } 4168 } 4169 break; 4170 #endif 4171 #endif 4172 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4173 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4174 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4175 event_handle_le_connection_complete(packet); 4176 break; 4177 4178 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4179 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4180 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4181 conn = hci_connection_for_handle(handle); 4182 if (!conn) break; 4183 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4184 break; 4185 4186 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4187 // connection 4188 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4189 conn = hci_connection_for_handle(handle); 4190 if (conn) { 4191 // read arguments 4192 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4193 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4194 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4195 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4196 4197 // validate against current connection parameter range 4198 le_connection_parameter_range_t existing_range; 4199 gap_get_connection_parameter_range(&existing_range); 4200 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4201 if (update_parameter){ 4202 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4203 conn->le_conn_interval_min = le_conn_interval_min; 4204 conn->le_conn_interval_max = le_conn_interval_max; 4205 conn->le_conn_latency = le_conn_latency; 4206 conn->le_supervision_timeout = le_supervision_timeout; 4207 } else { 4208 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4209 } 4210 } 4211 break; 4212 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4213 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4214 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4215 conn = hci_connection_for_handle(handle); 4216 if (conn) { 4217 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4218 } 4219 break; 4220 #endif 4221 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4222 case HCI_SUBEVENT_LE_CIS_REQUEST: 4223 // incoming CIS request, allocate iso stream object and cache metadata 4224 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4225 hci_subevent_le_cis_request_get_cig_id(packet), 4226 hci_subevent_le_cis_request_get_cis_id(packet)); 4227 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4228 if (iso_stream != NULL){ 4229 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4230 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4231 } 4232 break; 4233 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4234 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4235 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4236 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4237 iso_stream = hci_iso_stream_for_con_handle(handle); 4238 btstack_assert(iso_stream != NULL); 4239 // track SDU 4240 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4241 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4242 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4243 // CIS Accept by Peripheral 4244 if (status == ERROR_CODE_SUCCESS){ 4245 if (iso_stream->max_sdu_p_to_c > 0){ 4246 // we're peripheral and we will send data 4247 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4248 } else { 4249 // we're peripheral and we will only receive data 4250 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4251 } 4252 } else { 4253 hci_cis_handle_created(iso_stream, status); 4254 } 4255 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4256 } else { 4257 // CIG Setup by Central 4258 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4259 btstack_assert(cig != NULL); 4260 // update iso stream state 4261 if (status == ERROR_CODE_SUCCESS){ 4262 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4263 } else { 4264 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4265 } 4266 // update cig state 4267 uint8_t i; 4268 for (i=0;i<cig->num_cis;i++){ 4269 if (cig->cis_con_handles[i] == handle){ 4270 cig->cis_setup_active[i] = false; 4271 if (status == ERROR_CODE_SUCCESS){ 4272 cig->cis_established[i] = true; 4273 } else { 4274 hci_cis_handle_created(iso_stream, status); 4275 } 4276 } 4277 } 4278 4279 // trigger iso path setup if complete 4280 bool cis_setup_active = false; 4281 for (i=0;i<cig->num_cis;i++){ 4282 cis_setup_active |= cig->cis_setup_active[i]; 4283 } 4284 if (cis_setup_active == false){ 4285 cig->state_vars.next_cis = 0; 4286 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4287 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4288 } 4289 } 4290 } 4291 break; 4292 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4293 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4294 big = hci_big_for_handle(packet[4]); 4295 if (big != NULL){ 4296 uint8_t status = packet[3]; 4297 if (status == ERROR_CODE_SUCCESS){ 4298 // store bis_con_handles and trigger iso path setup 4299 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4300 uint8_t i; 4301 for (i=0;i<num_bis;i++){ 4302 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4303 big->bis_con_handles[i] = bis_handle; 4304 // assign bis handle 4305 btstack_linked_list_iterator_t it; 4306 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4307 while (btstack_linked_list_iterator_has_next(&it)){ 4308 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4309 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4310 (iso_stream->group_id == big->big_handle)){ 4311 iso_stream->cis_handle = bis_handle; 4312 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4313 break; 4314 } 4315 } 4316 } 4317 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4318 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4319 big->state_vars.next_bis = 0; 4320 } 4321 } else { 4322 // create BIG failed or has been stopped by us 4323 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4324 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4325 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4326 hci_emit_big_created(big, status); 4327 } else { 4328 hci_emit_big_terminated(big); 4329 } 4330 } 4331 } 4332 break; 4333 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4334 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4335 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4336 if (big != NULL){ 4337 // finalize associated ISO streams 4338 btstack_linked_list_iterator_t it; 4339 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4340 while (btstack_linked_list_iterator_has_next(&it)){ 4341 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4342 if (iso_stream->group_id == big->big_handle){ 4343 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4344 btstack_linked_list_iterator_remove(&it); 4345 btstack_memory_hci_iso_stream_free(iso_stream); 4346 } 4347 } 4348 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4349 switch (big->state){ 4350 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4351 hci_emit_big_created(big, big->state_vars.status); 4352 break; 4353 default: 4354 hci_emit_big_terminated(big); 4355 break; 4356 } 4357 } 4358 break; 4359 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4360 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4361 big_sync = hci_big_sync_for_handle(packet[4]); 4362 if (big_sync != NULL){ 4363 uint8_t status = packet[3]; 4364 uint8_t big_handle = packet[4]; 4365 if (status == ERROR_CODE_SUCCESS){ 4366 // store bis_con_handles and trigger iso path setup 4367 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4368 uint8_t i; 4369 for (i=0;i<num_bis;i++){ 4370 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4371 } 4372 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4373 // trigger iso path setup 4374 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4375 big_sync->state_vars.next_bis = 0; 4376 } 4377 } else { 4378 // create BIG Sync failed or has been stopped by us 4379 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4380 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4381 hci_emit_big_sync_created(big_sync, status); 4382 } else { 4383 hci_emit_big_sync_stopped(big_handle); 4384 } 4385 } 4386 } 4387 break; 4388 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4389 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4390 big_sync = hci_big_sync_for_handle(packet[4]); 4391 if (big_sync != NULL){ 4392 uint8_t big_handle = packet[4]; 4393 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4394 hci_emit_big_sync_stopped(big_handle); 4395 } 4396 break; 4397 #endif 4398 default: 4399 break; 4400 } 4401 break; 4402 #endif 4403 case HCI_EVENT_VENDOR_SPECIFIC: 4404 // Vendor specific commands often create vendor specific event instead of num completed packets 4405 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4406 switch (hci_stack->manufacturer){ 4407 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4408 hci_stack->num_cmd_packets = 1; 4409 break; 4410 default: 4411 break; 4412 } 4413 break; 4414 default: 4415 break; 4416 } 4417 4418 handle_event_for_current_stack_state(packet, size); 4419 4420 // notify upper stack 4421 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4422 4423 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4424 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4425 handle = little_endian_read_16(packet, 3); 4426 hci_connection_t * aConn = hci_connection_for_handle(handle); 4427 // discard connection if app did not trigger a reconnect in the event handler 4428 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4429 hci_shutdown_connection(aConn); 4430 } 4431 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4432 hci_controller_dump_packets(); 4433 #endif 4434 } 4435 4436 // execute main loop 4437 hci_run(); 4438 } 4439 4440 #ifdef ENABLE_CLASSIC 4441 4442 #ifdef ENABLE_SCO_OVER_HCI 4443 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4444 static void sco_schedule_tx(hci_connection_t * conn); 4445 4446 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4447 log_debug("SCO TX Timeout"); 4448 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4449 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4450 if (!conn) return; 4451 4452 // trigger send 4453 conn->sco_tx_ready = 1; 4454 // extra packet if CVSD but SCO buffer is too short 4455 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4456 conn->sco_tx_ready++; 4457 } 4458 hci_notify_if_sco_can_send_now(); 4459 } 4460 4461 4462 #define SCO_TX_AFTER_RX_MS (6) 4463 4464 static void sco_schedule_tx(hci_connection_t * conn){ 4465 4466 uint32_t now = btstack_run_loop_get_time_ms(); 4467 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4468 int time_delta_ms = sco_tx_ms - now; 4469 4470 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4471 4472 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4473 btstack_run_loop_remove_timer(timer); 4474 btstack_run_loop_set_timer(timer, time_delta_ms); 4475 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4476 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4477 btstack_run_loop_add_timer(timer); 4478 } 4479 #endif 4480 4481 static void sco_handler(uint8_t * packet, uint16_t size){ 4482 // lookup connection struct 4483 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4484 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4485 if (!conn) return; 4486 4487 #ifdef ENABLE_SCO_OVER_HCI 4488 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4489 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4490 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4491 packet[2] = 0x3c; 4492 memmove(&packet[3], &packet[23], 63); 4493 size = 63; 4494 } 4495 } 4496 4497 if (hci_have_usb_transport()){ 4498 // Nothing to do 4499 } else { 4500 // 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); 4501 if (hci_stack->synchronous_flow_control_enabled == 0){ 4502 uint32_t now = btstack_run_loop_get_time_ms(); 4503 4504 if (!conn->sco_rx_valid){ 4505 // ignore first 10 packets 4506 conn->sco_rx_count++; 4507 // log_debug("sco rx count %u", conn->sco_rx_count); 4508 if (conn->sco_rx_count == 10) { 4509 // use first timestamp as is and pretent it just started 4510 conn->sco_rx_ms = now; 4511 conn->sco_rx_valid = 1; 4512 conn->sco_rx_count = 0; 4513 sco_schedule_tx(conn); 4514 } 4515 } else { 4516 // track expected arrival timme 4517 conn->sco_rx_count++; 4518 conn->sco_rx_ms += 7; 4519 int delta = (int32_t) (now - conn->sco_rx_ms); 4520 if (delta > 0){ 4521 conn->sco_rx_ms++; 4522 } 4523 // log_debug("sco rx %u", conn->sco_rx_ms); 4524 sco_schedule_tx(conn); 4525 } 4526 } 4527 } 4528 #endif 4529 4530 // deliver to app 4531 if (hci_stack->sco_packet_handler) { 4532 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4533 } 4534 4535 #ifdef HAVE_SCO_TRANSPORT 4536 // We can send one packet for each received packet 4537 conn->sco_tx_ready++; 4538 hci_notify_if_sco_can_send_now(); 4539 #endif 4540 4541 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4542 conn->num_packets_completed++; 4543 hci_stack->host_completed_packets = 1; 4544 hci_run(); 4545 #endif 4546 } 4547 #endif 4548 4549 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4550 hci_dump_packet(packet_type, 1, packet, size); 4551 switch (packet_type) { 4552 case HCI_EVENT_PACKET: 4553 event_handler(packet, size); 4554 break; 4555 case HCI_ACL_DATA_PACKET: 4556 acl_handler(packet, size); 4557 break; 4558 #ifdef ENABLE_CLASSIC 4559 case HCI_SCO_DATA_PACKET: 4560 sco_handler(packet, size); 4561 break; 4562 #endif 4563 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4564 case HCI_ISO_DATA_PACKET: 4565 hci_iso_packet_handler(packet, size); 4566 break; 4567 #endif 4568 default: 4569 break; 4570 } 4571 } 4572 4573 /** 4574 * @brief Add event packet handler. 4575 */ 4576 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4577 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4578 } 4579 4580 /** 4581 * @brief Remove event packet handler. 4582 */ 4583 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4584 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4585 } 4586 4587 /** Register HCI packet handlers */ 4588 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4589 hci_stack->acl_packet_handler = handler; 4590 } 4591 4592 #ifdef ENABLE_CLASSIC 4593 /** 4594 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4595 */ 4596 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4597 hci_stack->sco_packet_handler = handler; 4598 } 4599 #endif 4600 4601 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4602 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4603 hci_stack->iso_packet_handler = handler; 4604 } 4605 #endif 4606 4607 static void hci_state_reset(void){ 4608 // no connections yet 4609 hci_stack->connections = NULL; 4610 4611 // keep discoverable/connectable as this has been requested by the client(s) 4612 // hci_stack->discoverable = 0; 4613 // hci_stack->connectable = 0; 4614 // hci_stack->bondable = 1; 4615 // hci_stack->own_addr_type = 0; 4616 4617 // buffer is free 4618 hci_stack->hci_packet_buffer_reserved = false; 4619 4620 // no pending cmds 4621 hci_stack->decline_reason = 0; 4622 4623 hci_stack->secure_connections_active = false; 4624 4625 #ifdef ENABLE_CLASSIC 4626 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4627 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4628 4629 hci_stack->gap_tasks_classic = 4630 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4631 GAP_TASK_SET_CLASS_OF_DEVICE | 4632 GAP_TASK_SET_LOCAL_NAME | 4633 GAP_TASK_SET_EIR_DATA | 4634 GAP_TASK_WRITE_SCAN_ENABLE | 4635 GAP_TASK_WRITE_PAGE_TIMEOUT; 4636 #endif 4637 4638 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4639 hci_stack->classic_read_local_oob_data = false; 4640 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4641 #endif 4642 4643 // LE 4644 #ifdef ENABLE_BLE 4645 memset(hci_stack->le_random_address, 0, 6); 4646 hci_stack->le_random_address_set = 0; 4647 #endif 4648 #ifdef ENABLE_LE_CENTRAL 4649 hci_stack->le_scanning_active = false; 4650 hci_stack->le_scanning_param_update = true; 4651 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4652 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4653 hci_stack->le_whitelist_capacity = 0; 4654 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4655 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4656 #endif 4657 #endif 4658 #ifdef ENABLE_LE_PERIPHERAL 4659 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4660 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4661 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4662 } 4663 if (hci_stack->le_advertisements_data != NULL){ 4664 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4665 } 4666 #endif 4667 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4668 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4669 #endif 4670 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4671 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4672 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4673 #endif 4674 } 4675 4676 #ifdef ENABLE_CLASSIC 4677 /** 4678 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4679 */ 4680 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4681 // store and open remote device db 4682 hci_stack->link_key_db = link_key_db; 4683 if (hci_stack->link_key_db) { 4684 hci_stack->link_key_db->open(); 4685 } 4686 } 4687 #endif 4688 4689 void hci_init(const hci_transport_t *transport, const void *config){ 4690 4691 #ifdef HAVE_MALLOC 4692 if (!hci_stack) { 4693 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4694 } 4695 #else 4696 hci_stack = &hci_stack_static; 4697 #endif 4698 memset(hci_stack, 0, sizeof(hci_stack_t)); 4699 4700 // reference to use transport layer implementation 4701 hci_stack->hci_transport = transport; 4702 4703 // reference to used config 4704 hci_stack->config = config; 4705 4706 // setup pointer for outgoing packet buffer 4707 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4708 4709 // max acl payload size defined in config.h 4710 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4711 4712 // register packet handlers with transport 4713 transport->register_packet_handler(&packet_handler); 4714 4715 hci_stack->state = HCI_STATE_OFF; 4716 4717 // class of device 4718 hci_stack->class_of_device = 0x007a020c; // Smartphone 4719 4720 // bondable by default 4721 hci_stack->bondable = 1; 4722 4723 #ifdef ENABLE_CLASSIC 4724 // classic name 4725 hci_stack->local_name = default_classic_name; 4726 4727 // Master slave policy 4728 hci_stack->master_slave_policy = 1; 4729 4730 // Allow Role Switch 4731 hci_stack->allow_role_switch = 1; 4732 4733 // Default / minimum security level = 2 4734 hci_stack->gap_security_level = LEVEL_2; 4735 4736 // Default Security Mode 4 4737 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4738 4739 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4740 hci_stack->gap_required_encyrption_key_size = 7; 4741 4742 // Link Supervision Timeout 4743 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4744 4745 #endif 4746 4747 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4748 hci_stack->ssp_enable = 1; 4749 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4750 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4751 hci_stack->ssp_auto_accept = 1; 4752 4753 // Secure Connections: enable (requires support from Controller) 4754 hci_stack->secure_connections_enable = true; 4755 4756 // voice setting - signed 16 bit pcm data with CVSD over the air 4757 hci_stack->sco_voice_setting = 0x60; 4758 4759 #ifdef ENABLE_BLE 4760 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4761 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4762 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4763 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4764 hci_stack->le_connection_latency = 4; // 4 4765 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4766 hci_stack->le_minimum_ce_length = 0; // 0 ms 4767 hci_stack->le_maximum_ce_length = 0; // 0 ms 4768 #endif 4769 4770 #ifdef ENABLE_LE_CENTRAL 4771 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4772 4773 // default LE Scanning 4774 hci_stack->le_scan_type = 0x01; // active 4775 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4776 hci_stack->le_scan_window = 0x30; // 30 ms 4777 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4778 #endif 4779 4780 #ifdef ENABLE_LE_PERIPHERAL 4781 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4782 4783 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4784 hci_stack->le_advertisements_interval_min = 0x0800; 4785 hci_stack->le_advertisements_interval_max = 0x0800; 4786 hci_stack->le_advertisements_type = 0; 4787 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4788 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4789 hci_stack->le_advertisements_channel_map = 0x07; 4790 hci_stack->le_advertisements_filter_policy = 0; 4791 #endif 4792 4793 // connection parameter range used to answer connection parameter update requests in l2cap 4794 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4795 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4796 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4797 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4798 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4799 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4800 4801 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4802 hci_stack->iso_packets_to_queue = 1; 4803 #endif 4804 4805 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4806 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4807 #endif 4808 4809 hci_state_reset(); 4810 } 4811 4812 void hci_deinit(void){ 4813 btstack_run_loop_remove_timer(&hci_stack->timeout); 4814 #ifdef HAVE_MALLOC 4815 if (hci_stack) { 4816 free(hci_stack); 4817 } 4818 #endif 4819 hci_stack = NULL; 4820 4821 #ifdef ENABLE_CLASSIC 4822 disable_l2cap_timeouts = 0; 4823 #endif 4824 } 4825 4826 /** 4827 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4828 */ 4829 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4830 hci_stack->chipset = chipset_driver; 4831 4832 // reset chipset driver - init is also called on power_up 4833 if (hci_stack->chipset && hci_stack->chipset->init){ 4834 hci_stack->chipset->init(hci_stack->config); 4835 } 4836 } 4837 4838 void hci_enable_custom_pre_init(void){ 4839 hci_stack->chipset_pre_init = true; 4840 } 4841 4842 /** 4843 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4844 */ 4845 void hci_set_control(const btstack_control_t *hardware_control){ 4846 // references to used control implementation 4847 hci_stack->control = hardware_control; 4848 // init with transport config 4849 hardware_control->init(hci_stack->config); 4850 } 4851 4852 static void hci_discard_connections(void){ 4853 btstack_linked_list_iterator_t it; 4854 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4855 while (btstack_linked_list_iterator_has_next(&it)){ 4856 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4857 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4858 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4859 hci_shutdown_connection(connection); 4860 } 4861 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4862 while (hci_stack->iso_streams != NULL){ 4863 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4864 } 4865 #endif 4866 } 4867 4868 void hci_close(void){ 4869 4870 #ifdef ENABLE_CLASSIC 4871 // close remote device db 4872 if (hci_stack->link_key_db) { 4873 hci_stack->link_key_db->close(); 4874 } 4875 #endif 4876 4877 hci_discard_connections(); 4878 4879 hci_power_control(HCI_POWER_OFF); 4880 4881 #ifdef HAVE_MALLOC 4882 free(hci_stack); 4883 #endif 4884 hci_stack = NULL; 4885 } 4886 4887 #ifdef HAVE_SCO_TRANSPORT 4888 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4889 hci_stack->sco_transport = sco_transport; 4890 sco_transport->register_packet_handler(&packet_handler); 4891 } 4892 #endif 4893 4894 #ifdef ENABLE_CLASSIC 4895 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4896 // validate ranage and set 4897 if (encryption_key_size < 7) return; 4898 if (encryption_key_size > 16) return; 4899 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4900 } 4901 4902 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4903 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4904 hci_stack->gap_security_mode = security_mode; 4905 return ERROR_CODE_SUCCESS; 4906 } else { 4907 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4908 } 4909 } 4910 4911 gap_security_mode_t gap_get_security_mode(void){ 4912 return hci_stack->gap_security_mode; 4913 } 4914 4915 void gap_set_security_level(gap_security_level_t security_level){ 4916 hci_stack->gap_security_level = security_level; 4917 } 4918 4919 gap_security_level_t gap_get_security_level(void){ 4920 if (hci_stack->gap_secure_connections_only_mode){ 4921 return LEVEL_4; 4922 } 4923 return hci_stack->gap_security_level; 4924 } 4925 4926 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4927 hci_stack->gap_minimal_service_security_level = security_level; 4928 } 4929 4930 void gap_set_secure_connections_only_mode(bool enable){ 4931 hci_stack->gap_secure_connections_only_mode = enable; 4932 } 4933 4934 bool gap_get_secure_connections_only_mode(void){ 4935 return hci_stack->gap_secure_connections_only_mode; 4936 } 4937 #endif 4938 4939 #ifdef ENABLE_CLASSIC 4940 void gap_set_class_of_device(uint32_t class_of_device){ 4941 hci_stack->class_of_device = class_of_device; 4942 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4943 hci_run(); 4944 } 4945 4946 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4947 hci_stack->default_link_policy_settings = default_link_policy_settings; 4948 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4949 hci_run(); 4950 } 4951 4952 void gap_set_allow_role_switch(bool allow_role_switch){ 4953 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4954 } 4955 4956 uint8_t hci_get_allow_role_switch(void){ 4957 return hci_stack->allow_role_switch; 4958 } 4959 4960 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4961 hci_stack->link_supervision_timeout = link_supervision_timeout; 4962 } 4963 4964 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4965 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4966 } 4967 4968 uint16_t hci_automatic_flush_timeout(void){ 4969 return hci_stack->automatic_flush_timeout; 4970 } 4971 4972 void hci_disable_l2cap_timeout_check(void){ 4973 disable_l2cap_timeouts = 1; 4974 } 4975 #endif 4976 4977 #ifndef HAVE_HOST_CONTROLLER_API 4978 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4979 void hci_set_bd_addr(bd_addr_t addr){ 4980 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4981 hci_stack->custom_bd_addr_set = 1; 4982 } 4983 #endif 4984 4985 // State-Module-Driver overview 4986 // state module low-level 4987 // HCI_STATE_OFF off close 4988 // HCI_STATE_INITIALIZING, on open 4989 // HCI_STATE_WORKING, on open 4990 // HCI_STATE_HALTING, on open 4991 // HCI_STATE_SLEEPING, off/sleep close 4992 // HCI_STATE_FALLING_ASLEEP on open 4993 4994 static int hci_power_control_on(void){ 4995 4996 // power on 4997 int err = 0; 4998 if (hci_stack->control && hci_stack->control->on){ 4999 err = (*hci_stack->control->on)(); 5000 } 5001 if (err){ 5002 log_error( "POWER_ON failed"); 5003 hci_emit_hci_open_failed(); 5004 return err; 5005 } 5006 5007 // int chipset driver 5008 if (hci_stack->chipset && hci_stack->chipset->init){ 5009 hci_stack->chipset->init(hci_stack->config); 5010 } 5011 5012 // init transport 5013 if (hci_stack->hci_transport->init){ 5014 hci_stack->hci_transport->init(hci_stack->config); 5015 } 5016 5017 // open transport 5018 err = hci_stack->hci_transport->open(); 5019 if (err){ 5020 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5021 if (hci_stack->control && hci_stack->control->off){ 5022 (*hci_stack->control->off)(); 5023 } 5024 hci_emit_hci_open_failed(); 5025 return err; 5026 } 5027 return 0; 5028 } 5029 5030 static void hci_power_control_off(void){ 5031 5032 log_info("hci_power_control_off"); 5033 5034 // close low-level device 5035 hci_stack->hci_transport->close(); 5036 5037 log_info("hci_power_control_off - hci_transport closed"); 5038 5039 // power off 5040 if (hci_stack->control && hci_stack->control->off){ 5041 (*hci_stack->control->off)(); 5042 } 5043 5044 log_info("hci_power_control_off - control closed"); 5045 5046 hci_stack->state = HCI_STATE_OFF; 5047 } 5048 5049 static void hci_power_control_sleep(void){ 5050 5051 log_info("hci_power_control_sleep"); 5052 5053 #if 0 5054 // don't close serial port during sleep 5055 5056 // close low-level device 5057 hci_stack->hci_transport->close(hci_stack->config); 5058 #endif 5059 5060 // sleep mode 5061 if (hci_stack->control && hci_stack->control->sleep){ 5062 (*hci_stack->control->sleep)(); 5063 } 5064 5065 hci_stack->state = HCI_STATE_SLEEPING; 5066 } 5067 5068 static int hci_power_control_wake(void){ 5069 5070 log_info("hci_power_control_wake"); 5071 5072 // wake on 5073 if (hci_stack->control && hci_stack->control->wake){ 5074 (*hci_stack->control->wake)(); 5075 } 5076 5077 #if 0 5078 // open low-level device 5079 int err = hci_stack->hci_transport->open(hci_stack->config); 5080 if (err){ 5081 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5082 if (hci_stack->control && hci_stack->control->off){ 5083 (*hci_stack->control->off)(); 5084 } 5085 hci_emit_hci_open_failed(); 5086 return err; 5087 } 5088 #endif 5089 5090 return 0; 5091 } 5092 5093 static void hci_power_enter_initializing_state(void){ 5094 // set up state machine 5095 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5096 hci_stack->hci_packet_buffer_reserved = false; 5097 hci_stack->state = HCI_STATE_INITIALIZING; 5098 5099 #ifndef HAVE_HOST_CONTROLLER_API 5100 if (hci_stack->chipset_pre_init) { 5101 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5102 } else 5103 #endif 5104 { 5105 hci_stack->substate = HCI_INIT_SEND_RESET; 5106 } 5107 } 5108 5109 static void hci_power_enter_halting_state(void){ 5110 #ifdef ENABLE_BLE 5111 // drop entries scheduled for removal, mark others for re-adding 5112 btstack_linked_list_iterator_t it; 5113 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5114 while (btstack_linked_list_iterator_has_next(&it)){ 5115 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5116 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5117 btstack_linked_list_iterator_remove(&it); 5118 btstack_memory_whitelist_entry_free(entry); 5119 } else { 5120 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5121 } 5122 } 5123 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5124 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5125 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5126 while (btstack_linked_list_iterator_has_next(&it)){ 5127 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5128 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5129 btstack_linked_list_iterator_remove(&it); 5130 btstack_memory_periodic_advertiser_list_entry_free(entry); 5131 } else { 5132 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5133 continue; 5134 } 5135 } 5136 #endif 5137 #endif 5138 // see hci_run 5139 hci_stack->state = HCI_STATE_HALTING; 5140 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5141 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5142 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5143 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5144 btstack_run_loop_add_timer(&hci_stack->timeout); 5145 } 5146 5147 // returns error 5148 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5149 int err; 5150 switch (power_mode){ 5151 case HCI_POWER_ON: 5152 err = hci_power_control_on(); 5153 if (err != 0) { 5154 log_error("hci_power_control_on() error %d", err); 5155 return err; 5156 } 5157 hci_power_enter_initializing_state(); 5158 break; 5159 case HCI_POWER_OFF: 5160 // do nothing 5161 break; 5162 case HCI_POWER_SLEEP: 5163 // do nothing (with SLEEP == OFF) 5164 break; 5165 default: 5166 btstack_assert(false); 5167 break; 5168 } 5169 return ERROR_CODE_SUCCESS; 5170 } 5171 5172 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5173 switch (power_mode){ 5174 case HCI_POWER_ON: 5175 // do nothing 5176 break; 5177 case HCI_POWER_OFF: 5178 // no connections yet, just turn it off 5179 hci_power_control_off(); 5180 break; 5181 case HCI_POWER_SLEEP: 5182 // no connections yet, just turn it off 5183 hci_power_control_sleep(); 5184 break; 5185 default: 5186 btstack_assert(false); 5187 break; 5188 } 5189 return ERROR_CODE_SUCCESS; 5190 } 5191 5192 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5193 switch (power_mode){ 5194 case HCI_POWER_ON: 5195 // do nothing 5196 break; 5197 case HCI_POWER_OFF: 5198 hci_power_enter_halting_state(); 5199 break; 5200 case HCI_POWER_SLEEP: 5201 // see hci_run 5202 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5203 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5204 break; 5205 default: 5206 btstack_assert(false); 5207 break; 5208 } 5209 return ERROR_CODE_SUCCESS; 5210 } 5211 5212 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5213 switch (power_mode){ 5214 case HCI_POWER_ON: 5215 hci_power_enter_initializing_state(); 5216 break; 5217 case HCI_POWER_OFF: 5218 // do nothing 5219 break; 5220 case HCI_POWER_SLEEP: 5221 // see hci_run 5222 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5223 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5224 break; 5225 default: 5226 btstack_assert(false); 5227 break; 5228 } 5229 return ERROR_CODE_SUCCESS; 5230 } 5231 5232 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5233 switch (power_mode){ 5234 case HCI_POWER_ON: 5235 hci_power_enter_initializing_state(); 5236 break; 5237 case HCI_POWER_OFF: 5238 hci_power_enter_halting_state(); 5239 break; 5240 case HCI_POWER_SLEEP: 5241 // do nothing 5242 break; 5243 default: 5244 btstack_assert(false); 5245 break; 5246 } 5247 return ERROR_CODE_SUCCESS; 5248 } 5249 5250 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5251 int err; 5252 switch (power_mode){ 5253 case HCI_POWER_ON: 5254 err = hci_power_control_wake(); 5255 if (err) return err; 5256 hci_power_enter_initializing_state(); 5257 break; 5258 case HCI_POWER_OFF: 5259 hci_power_enter_halting_state(); 5260 break; 5261 case HCI_POWER_SLEEP: 5262 // do nothing 5263 break; 5264 default: 5265 btstack_assert(false); 5266 break; 5267 } 5268 return ERROR_CODE_SUCCESS; 5269 } 5270 5271 int hci_power_control(HCI_POWER_MODE power_mode){ 5272 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5273 btstack_run_loop_remove_timer(&hci_stack->timeout); 5274 int err = 0; 5275 switch (hci_stack->state){ 5276 case HCI_STATE_OFF: 5277 err = hci_power_control_state_off(power_mode); 5278 break; 5279 case HCI_STATE_INITIALIZING: 5280 err = hci_power_control_state_initializing(power_mode); 5281 break; 5282 case HCI_STATE_WORKING: 5283 err = hci_power_control_state_working(power_mode); 5284 break; 5285 case HCI_STATE_HALTING: 5286 err = hci_power_control_state_halting(power_mode); 5287 break; 5288 case HCI_STATE_FALLING_ASLEEP: 5289 err = hci_power_control_state_falling_asleep(power_mode); 5290 break; 5291 case HCI_STATE_SLEEPING: 5292 err = hci_power_control_state_sleeping(power_mode); 5293 break; 5294 default: 5295 btstack_assert(false); 5296 break; 5297 } 5298 if (err != 0){ 5299 return err; 5300 } 5301 5302 // create internal event 5303 hci_emit_state(); 5304 5305 // trigger next/first action 5306 hci_run(); 5307 5308 return 0; 5309 } 5310 5311 5312 static void hci_halting_run(void) { 5313 5314 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5315 5316 hci_connection_t *connection; 5317 #ifdef ENABLE_BLE 5318 #ifdef ENABLE_LE_PERIPHERAL 5319 bool stop_advertismenets; 5320 #endif 5321 #endif 5322 5323 switch (hci_stack->substate) { 5324 case HCI_HALTING_CLASSIC_STOP: 5325 #ifdef ENABLE_CLASSIC 5326 if (!hci_can_send_command_packet_now()) return; 5327 5328 if (hci_stack->connectable || hci_stack->discoverable){ 5329 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5330 hci_send_cmd(&hci_write_scan_enable, 0); 5331 return; 5332 } 5333 #endif 5334 /* fall through */ 5335 5336 case HCI_HALTING_LE_ADV_STOP: 5337 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5338 5339 #ifdef ENABLE_BLE 5340 #ifdef ENABLE_LE_PERIPHERAL 5341 if (!hci_can_send_command_packet_now()) return; 5342 5343 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5344 5345 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5346 if (hci_extended_advertising_supported()){ 5347 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5348 btstack_linked_list_iterator_t it; 5349 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5350 // stop all periodic advertisements and check if an extended set is active 5351 while (btstack_linked_list_iterator_has_next(&it)){ 5352 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5353 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5354 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5355 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5356 return; 5357 } 5358 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5359 stop_advertismenets = true; 5360 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5361 } 5362 } 5363 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5364 if (stop_advertismenets){ 5365 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5366 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5367 return; 5368 } 5369 } else 5370 #else /* ENABLE_LE_PERIPHERAL */ 5371 { 5372 if (stop_advertismenets) { 5373 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5374 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5375 return; 5376 } 5377 } 5378 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5379 #endif /* ENABLE_LE_PERIPHERAL */ 5380 #endif /* ENABLE_BLE */ 5381 5382 /* fall through */ 5383 5384 case HCI_HALTING_LE_SCAN_STOP: 5385 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5386 if (!hci_can_send_command_packet_now()) return; 5387 5388 #ifdef ENABLE_BLE 5389 #ifdef ENABLE_LE_CENTRAL 5390 if (hci_stack->le_scanning_active){ 5391 hci_le_scan_stop(); 5392 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5393 return; 5394 } 5395 #endif 5396 #endif 5397 5398 /* fall through */ 5399 5400 case HCI_HALTING_DISCONNECT_ALL: 5401 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5402 if (!hci_can_send_command_packet_now()) return; 5403 5404 // close all open connections 5405 connection = (hci_connection_t *) hci_stack->connections; 5406 if (connection) { 5407 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5408 5409 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5410 5411 // check state 5412 switch(connection->state) { 5413 case SENT_DISCONNECT: 5414 case RECEIVED_DISCONNECTION_COMPLETE: 5415 // wait until connection is gone 5416 return; 5417 default: 5418 break; 5419 } 5420 5421 // finally, send the disconnect command 5422 connection->state = SENT_DISCONNECT; 5423 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5424 return; 5425 } 5426 5427 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5428 // stop BIGs and BIG Syncs 5429 if (hci_stack->le_audio_bigs != NULL){ 5430 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5431 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5432 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5433 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5434 return; 5435 } 5436 if (hci_stack->le_audio_big_syncs != NULL){ 5437 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5438 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5439 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5440 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5441 return; 5442 } 5443 #endif 5444 5445 btstack_run_loop_remove_timer(&hci_stack->timeout); 5446 5447 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5448 log_info("HCI_STATE_HALTING: wait 50 ms"); 5449 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5450 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5451 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5452 btstack_run_loop_add_timer(&hci_stack->timeout); 5453 break; 5454 5455 case HCI_HALTING_W4_CLOSE_TIMER: 5456 // keep waiting 5457 break; 5458 5459 case HCI_HALTING_CLOSE: 5460 // close left over connections (that had not been properly closed before) 5461 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5462 hci_discard_connections(); 5463 5464 log_info("HCI_STATE_HALTING, calling off"); 5465 5466 // switch mode 5467 hci_power_control_off(); 5468 5469 log_info("HCI_STATE_HALTING, emitting state"); 5470 hci_emit_state(); 5471 log_info("HCI_STATE_HALTING, done"); 5472 break; 5473 5474 default: 5475 break; 5476 } 5477 }; 5478 5479 static void hci_falling_asleep_run(void){ 5480 hci_connection_t * connection; 5481 switch(hci_stack->substate) { 5482 case HCI_FALLING_ASLEEP_DISCONNECT: 5483 log_info("HCI_STATE_FALLING_ASLEEP"); 5484 // close all open connections 5485 connection = (hci_connection_t *) hci_stack->connections; 5486 if (connection){ 5487 5488 // send disconnect 5489 if (!hci_can_send_command_packet_now()) return; 5490 5491 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5492 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5493 5494 // send disconnected event right away - causes higher layer connections to get closed, too. 5495 hci_shutdown_connection(connection); 5496 return; 5497 } 5498 5499 if (hci_classic_supported()){ 5500 // disable page and inquiry scan 5501 if (!hci_can_send_command_packet_now()) return; 5502 5503 log_info("HCI_STATE_HALTING, disabling inq scans"); 5504 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5505 5506 // continue in next sub state 5507 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5508 break; 5509 } 5510 5511 /* fall through */ 5512 5513 case HCI_FALLING_ASLEEP_COMPLETE: 5514 log_info("HCI_STATE_HALTING, calling sleep"); 5515 // switch mode 5516 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5517 hci_emit_state(); 5518 break; 5519 5520 default: 5521 break; 5522 } 5523 } 5524 5525 #ifdef ENABLE_CLASSIC 5526 5527 static void hci_update_scan_enable(void){ 5528 // 2 = page scan, 1 = inq scan 5529 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5530 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5531 hci_run(); 5532 } 5533 5534 void gap_discoverable_control(uint8_t enable){ 5535 if (enable) enable = 1; // normalize argument 5536 5537 if (hci_stack->discoverable == enable){ 5538 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5539 return; 5540 } 5541 5542 hci_stack->discoverable = enable; 5543 hci_update_scan_enable(); 5544 } 5545 5546 void gap_connectable_control(uint8_t enable){ 5547 if (enable) enable = 1; // normalize argument 5548 5549 // don't emit event 5550 if (hci_stack->connectable == enable) return; 5551 5552 hci_stack->connectable = enable; 5553 hci_update_scan_enable(); 5554 } 5555 #endif 5556 5557 void gap_local_bd_addr(bd_addr_t address_buffer){ 5558 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5559 } 5560 5561 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5562 static void hci_host_num_completed_packets(void){ 5563 5564 // create packet manually as arrays are not supported and num_commands should not get reduced 5565 hci_reserve_packet_buffer(); 5566 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5567 5568 uint16_t size = 0; 5569 uint16_t num_handles = 0; 5570 packet[size++] = 0x35; 5571 packet[size++] = 0x0c; 5572 size++; // skip param len 5573 size++; // skip num handles 5574 5575 // add { handle, packets } entries 5576 btstack_linked_item_t * it; 5577 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5578 hci_connection_t * connection = (hci_connection_t *) it; 5579 if (connection->num_packets_completed){ 5580 little_endian_store_16(packet, size, connection->con_handle); 5581 size += 2; 5582 little_endian_store_16(packet, size, connection->num_packets_completed); 5583 size += 2; 5584 // 5585 num_handles++; 5586 connection->num_packets_completed = 0; 5587 } 5588 } 5589 5590 packet[2] = size - 3; 5591 packet[3] = num_handles; 5592 5593 hci_stack->host_completed_packets = 0; 5594 5595 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5596 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5597 5598 // release packet buffer for synchronous transport implementations 5599 if (hci_transport_synchronous()){ 5600 hci_release_packet_buffer(); 5601 hci_emit_transport_packet_sent(); 5602 } 5603 } 5604 #endif 5605 5606 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5607 UNUSED(ds); 5608 hci_stack->substate = HCI_HALTING_CLOSE; 5609 hci_halting_run(); 5610 } 5611 5612 static bool hci_run_acl_fragments(void){ 5613 if (hci_stack->acl_fragmentation_total_size > 0u) { 5614 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5615 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5616 if (connection) { 5617 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5618 hci_send_acl_packet_fragments(connection); 5619 return true; 5620 } 5621 } else { 5622 // connection gone -> discard further fragments 5623 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5624 hci_stack->acl_fragmentation_total_size = 0; 5625 hci_stack->acl_fragmentation_pos = 0; 5626 } 5627 } 5628 return false; 5629 } 5630 5631 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5632 static bool hci_run_iso_fragments(void){ 5633 if (hci_stack->iso_fragmentation_total_size > 0u) { 5634 // TODO: flow control 5635 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5636 hci_send_iso_packet_fragments(); 5637 return true; 5638 } 5639 } 5640 return false; 5641 } 5642 #endif 5643 5644 #ifdef ENABLE_CLASSIC 5645 5646 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5647 static bool hci_classic_operation_active(void) { 5648 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5649 return true; 5650 } 5651 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5652 return true; 5653 } 5654 btstack_linked_item_t * it; 5655 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5656 hci_connection_t *connection = (hci_connection_t *) it; 5657 switch (connection->state) { 5658 case SENT_CREATE_CONNECTION: 5659 case SENT_CANCEL_CONNECTION: 5660 case SENT_DISCONNECT: 5661 return true; 5662 default: 5663 break; 5664 } 5665 } 5666 return false; 5667 } 5668 #endif 5669 5670 static bool hci_run_general_gap_classic(void){ 5671 5672 // assert stack is working and classic is active 5673 if (hci_classic_supported() == false) return false; 5674 if (hci_stack->state != HCI_STATE_WORKING) return false; 5675 5676 // decline incoming connections 5677 if (hci_stack->decline_reason){ 5678 uint8_t reason = hci_stack->decline_reason; 5679 hci_stack->decline_reason = 0; 5680 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5681 return true; 5682 } 5683 5684 if (hci_stack->gap_tasks_classic != 0){ 5685 hci_run_gap_tasks_classic(); 5686 return true; 5687 } 5688 5689 // start/stop inquiry 5690 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5691 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5692 if (hci_classic_operation_active() == false) 5693 #endif 5694 { 5695 uint8_t duration = hci_stack->inquiry_state; 5696 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5697 if (hci_stack->inquiry_max_period_length != 0){ 5698 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); 5699 } else { 5700 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5701 } 5702 return true; 5703 } 5704 } 5705 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5706 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5707 hci_send_cmd(&hci_inquiry_cancel); 5708 return true; 5709 } 5710 5711 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5712 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5713 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5714 return true; 5715 } 5716 5717 // remote name request 5718 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5719 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5720 if (hci_classic_operation_active() == false) 5721 #endif 5722 { 5723 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5724 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5725 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5726 return true; 5727 } 5728 } 5729 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5730 // Local OOB data 5731 if (hci_stack->classic_read_local_oob_data){ 5732 hci_stack->classic_read_local_oob_data = false; 5733 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5734 hci_send_cmd(&hci_read_local_extended_oob_data); 5735 } else { 5736 hci_send_cmd(&hci_read_local_oob_data); 5737 } 5738 } 5739 #endif 5740 // pairing 5741 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5742 uint8_t state = hci_stack->gap_pairing_state; 5743 uint8_t pin_code[16]; 5744 switch (state){ 5745 case GAP_PAIRING_STATE_SEND_PIN: 5746 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5747 memset(pin_code, 0, 16); 5748 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5749 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5750 break; 5751 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5752 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5753 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5754 break; 5755 case GAP_PAIRING_STATE_SEND_PASSKEY: 5756 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5757 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5758 break; 5759 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5760 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5761 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5762 break; 5763 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5764 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5765 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5766 break; 5767 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5768 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5769 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5770 break; 5771 default: 5772 break; 5773 } 5774 return true; 5775 } 5776 return false; 5777 } 5778 #endif 5779 5780 #ifdef ENABLE_BLE 5781 5782 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5783 static uint8_t hci_le_num_phys(uint8_t phys){ 5784 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5785 btstack_assert(phys); 5786 return num_bits_set[phys]; 5787 } 5788 #endif 5789 5790 #ifdef ENABLE_LE_CENTRAL 5791 static void hci_le_scan_stop(void){ 5792 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5793 if (hci_extended_advertising_supported()) { 5794 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5795 } else 5796 #endif 5797 { 5798 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5799 } 5800 } 5801 5802 static void 5803 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5804 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5805 if (hci_extended_advertising_supported()) { 5806 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5807 uint16_t le_connection_scan_interval[3]; 5808 uint16_t le_connection_scan_window[3]; 5809 uint16_t le_connection_interval_min[3]; 5810 uint16_t le_connection_interval_max[3]; 5811 uint16_t le_connection_latency[3]; 5812 uint16_t le_supervision_timeout[3]; 5813 uint16_t le_minimum_ce_length[3]; 5814 uint16_t le_maximum_ce_length[3]; 5815 5816 uint8_t i; 5817 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5818 for (i=0;i<num_phys;i++){ 5819 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5820 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5821 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5822 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5823 le_connection_latency[i] = hci_stack->le_connection_latency; 5824 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5825 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5826 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5827 } 5828 hci_send_cmd(&hci_le_extended_create_connection, 5829 initiator_filter_policy, 5830 hci_stack->le_connection_own_addr_type, // our addr type: 5831 address_type, // peer address type 5832 address, // peer bd addr 5833 hci_stack->le_connection_phys, // initiating PHY 5834 le_connection_scan_interval, // conn scan interval 5835 le_connection_scan_window, // conn scan windows 5836 le_connection_interval_min, // conn interval min 5837 le_connection_interval_max, // conn interval max 5838 le_connection_latency, // conn latency 5839 le_supervision_timeout, // conn latency 5840 le_minimum_ce_length, // min ce length 5841 le_maximum_ce_length // max ce length 5842 ); 5843 } else 5844 #endif 5845 { 5846 hci_send_cmd(&hci_le_create_connection, 5847 hci_stack->le_connection_scan_interval, // conn scan interval 5848 hci_stack->le_connection_scan_window, // conn scan windows 5849 initiator_filter_policy, // don't use whitelist 5850 address_type, // peer address type 5851 address, // peer bd addr 5852 hci_stack->le_connection_own_addr_type, // our addr type: 5853 hci_stack->le_connection_interval_min, // conn interval min 5854 hci_stack->le_connection_interval_max, // conn interval max 5855 hci_stack->le_connection_latency, // conn latency 5856 hci_stack->le_supervision_timeout, // conn latency 5857 hci_stack->le_minimum_ce_length, // min ce length 5858 hci_stack->le_maximum_ce_length // max ce length 5859 ); 5860 } 5861 } 5862 #endif 5863 5864 #ifdef ENABLE_LE_PERIPHERAL 5865 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5866 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5867 uint8_t operation = 0; 5868 if (pos == 0){ 5869 // first fragment or complete data 5870 operation |= 1; 5871 } 5872 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5873 // last fragment or complete data 5874 operation |= 2; 5875 } 5876 return operation; 5877 } 5878 #endif 5879 #endif 5880 5881 static bool hci_run_general_gap_le(void){ 5882 5883 btstack_linked_list_iterator_t lit; 5884 5885 // Phase 1: collect what to stop 5886 5887 #ifdef ENABLE_LE_CENTRAL 5888 bool scanning_stop = false; 5889 bool connecting_stop = false; 5890 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5891 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5892 bool periodic_sync_stop = false; 5893 #endif 5894 #endif 5895 #endif 5896 5897 #ifdef ENABLE_LE_PERIPHERAL 5898 bool advertising_stop = false; 5899 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5900 le_advertising_set_t * advertising_stop_set = NULL; 5901 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5902 bool periodic_advertising_stop = false; 5903 #endif 5904 #endif 5905 #endif 5906 5907 // check if own address changes 5908 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 5909 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 5910 5911 // check if whitelist needs modification 5912 bool whitelist_modification_pending = false; 5913 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5914 while (btstack_linked_list_iterator_has_next(&lit)){ 5915 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5916 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5917 whitelist_modification_pending = true; 5918 break; 5919 } 5920 } 5921 5922 // check if resolving list needs modification 5923 bool resolving_list_modification_pending = false; 5924 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5925 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5926 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5927 resolving_list_modification_pending = true; 5928 } 5929 #endif 5930 5931 #ifdef ENABLE_LE_CENTRAL 5932 5933 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5934 // check if periodic advertiser list needs modification 5935 bool periodic_list_modification_pending = false; 5936 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5937 while (btstack_linked_list_iterator_has_next(&lit)){ 5938 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5939 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5940 periodic_list_modification_pending = true; 5941 break; 5942 } 5943 } 5944 #endif 5945 5946 // scanning control 5947 if (hci_stack->le_scanning_active) { 5948 // stop if: 5949 // - parameter change required 5950 // - it's disabled 5951 // - whitelist change required but used for scanning 5952 // - resolving list modified 5953 // - own address changes 5954 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5955 if ((hci_stack->le_scanning_param_update) || 5956 !hci_stack->le_scanning_enabled || 5957 (scanning_uses_whitelist && whitelist_modification_pending) || 5958 resolving_list_modification_pending || 5959 random_address_change){ 5960 5961 scanning_stop = true; 5962 } 5963 } 5964 5965 // connecting control 5966 bool connecting_with_whitelist; 5967 switch (hci_stack->le_connecting_state){ 5968 case LE_CONNECTING_DIRECT: 5969 case LE_CONNECTING_WHITELIST: 5970 // stop connecting if: 5971 // - connecting uses white and whitelist modification pending 5972 // - if it got disabled 5973 // - resolving list modified 5974 // - own address changes 5975 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5976 if ((connecting_with_whitelist && whitelist_modification_pending) || 5977 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5978 resolving_list_modification_pending || 5979 random_address_change) { 5980 5981 connecting_stop = true; 5982 } 5983 break; 5984 default: 5985 break; 5986 } 5987 5988 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5989 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5990 // periodic sync control 5991 bool sync_with_advertiser_list; 5992 switch(hci_stack->le_periodic_sync_state){ 5993 case LE_CONNECTING_DIRECT: 5994 case LE_CONNECTING_WHITELIST: 5995 // stop sync if: 5996 // - sync with advertiser list and advertiser list modification pending 5997 // - if it got disabled 5998 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5999 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6000 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6001 periodic_sync_stop = true; 6002 } 6003 break; 6004 default: 6005 break; 6006 } 6007 #endif 6008 #endif 6009 6010 #endif /* ENABLE_LE_CENTRAL */ 6011 6012 #ifdef ENABLE_LE_PERIPHERAL 6013 // le advertisement control 6014 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6015 // stop if: 6016 // - parameter change required 6017 // - random address used in advertising and changes 6018 // - it's disabled 6019 // - whitelist change required but used for advertisement filter policy 6020 // - resolving list modified 6021 // - own address changes 6022 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6023 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6024 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6025 if (advertising_change || 6026 (advertising_uses_random_address && random_address_change) || 6027 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6028 (advertising_uses_whitelist && whitelist_modification_pending) || 6029 resolving_list_modification_pending || 6030 random_address_change) { 6031 6032 advertising_stop = true; 6033 } 6034 } 6035 6036 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6037 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 6038 btstack_linked_list_iterator_t it; 6039 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6040 while (btstack_linked_list_iterator_has_next(&it)){ 6041 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6042 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6043 // stop if: 6044 // - parameter change required 6045 // - random address used in connectable advertising and changes 6046 // - it's disabled 6047 // - whitelist change required but used for advertisement filter policy 6048 // - resolving list modified 6049 // - own address changes 6050 // - advertisement set will be removed 6051 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6052 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6053 bool advertising_uses_random_address = 6054 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6055 advertising_connectable; 6056 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6057 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6058 bool advertising_set_random_address_change = 6059 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6060 bool advertising_set_will_be_removed = 6061 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6062 if (advertising_parameter_change || 6063 (advertising_uses_random_address && advertising_set_random_address_change) || 6064 (advertising_enabled == false) || 6065 (advertising_uses_whitelist && whitelist_modification_pending) || 6066 resolving_list_modification_pending || 6067 advertising_set_will_be_removed) { 6068 6069 advertising_stop = true; 6070 advertising_stop_set = advertising_set; 6071 break; 6072 } 6073 } 6074 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6075 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6076 // stop if: 6077 // - it's disabled 6078 // - parameter change required 6079 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6080 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6081 if ((periodic_enabled == false) || periodic_parameter_change){ 6082 periodic_advertising_stop = true; 6083 advertising_stop_set = advertising_set; 6084 } 6085 } 6086 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6087 } 6088 } 6089 #endif 6090 6091 #endif 6092 6093 6094 // Phase 2: stop everything that should be off during modifications 6095 6096 6097 // 2.1 Outgoing connection 6098 #ifdef ENABLE_LE_CENTRAL 6099 if (connecting_stop){ 6100 hci_send_cmd(&hci_le_create_connection_cancel); 6101 return true; 6102 } 6103 #endif 6104 6105 // 2.2 Scanning 6106 #ifdef ENABLE_LE_CENTRAL 6107 if (scanning_stop){ 6108 hci_stack->le_scanning_active = false; 6109 hci_le_scan_stop(); 6110 return true; 6111 } 6112 6113 // 2.3 Periodic Sync 6114 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6115 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6116 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6117 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6118 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6119 return true; 6120 } 6121 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6122 if (periodic_sync_stop){ 6123 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6124 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6125 return true; 6126 } 6127 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6128 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6129 #endif /* ENABLE_LE_CENTRAL */ 6130 6131 // 2.4 Advertising: legacy, extended, periodic 6132 #ifdef ENABLE_LE_PERIPHERAL 6133 if (advertising_stop){ 6134 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6135 if (hci_extended_advertising_supported()) { 6136 uint8_t advertising_stop_handle; 6137 if (advertising_stop_set != NULL){ 6138 advertising_stop_handle = advertising_stop_set->advertising_handle; 6139 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6140 } else { 6141 advertising_stop_handle = 0; 6142 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6143 } 6144 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6145 const uint16_t durations[] = { 0 }; 6146 const uint16_t max_events[] = { 0 }; 6147 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6148 } else 6149 #endif 6150 { 6151 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6152 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6153 } 6154 return true; 6155 } 6156 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6157 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6158 if (periodic_advertising_stop){ 6159 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6160 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6161 return true; 6162 } 6163 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6164 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6165 #endif /* ENABLE_LE_PERIPHERAL */ 6166 6167 6168 // Phase 3: modify 6169 6170 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6171 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6172 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6173 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6174 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6175 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6176 #endif 6177 return true; 6178 } 6179 6180 #ifdef ENABLE_LE_CENTRAL 6181 if (hci_stack->le_scanning_param_update){ 6182 hci_stack->le_scanning_param_update = false; 6183 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6184 if (hci_extended_advertising_supported()){ 6185 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6186 uint8_t scan_types[2]; 6187 uint16_t scan_intervals[2]; 6188 uint16_t scan_windows[2]; 6189 6190 uint8_t i; 6191 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6192 for (i=0;i<num_phys;i++){ 6193 scan_types[i] = hci_stack->le_scan_type; 6194 scan_intervals[i] = hci_stack->le_scan_interval; 6195 scan_windows[i] = hci_stack->le_scan_window; 6196 } 6197 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6198 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6199 } else 6200 #endif 6201 { 6202 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6203 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6204 } 6205 return true; 6206 } 6207 #endif 6208 6209 #ifdef ENABLE_LE_PERIPHERAL 6210 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6211 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6212 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6213 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6214 if (hci_extended_advertising_supported()){ 6215 // map advertisment type to advertising event properties 6216 uint16_t adv_event_properties = 0; 6217 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6218 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6219 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6220 } 6221 hci_stack->le_advertising_set_in_current_command = 0; 6222 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6223 0, 6224 adv_event_properties, 6225 hci_stack->le_advertisements_interval_min, 6226 hci_stack->le_advertisements_interval_max, 6227 hci_stack->le_advertisements_channel_map, 6228 hci_stack->le_advertisements_own_addr_type, 6229 hci_stack->le_advertisements_direct_address_type, 6230 hci_stack->le_advertisements_direct_address, 6231 hci_stack->le_advertisements_filter_policy, 6232 0x7f, // tx power: no preference 6233 0x01, // primary adv phy: LE 1M 6234 0, // secondary adv max skip 6235 0x01, // secondary adv phy 6236 0, // adv sid 6237 0 // scan request notification 6238 ); 6239 } else 6240 #endif 6241 { 6242 hci_send_cmd(&hci_le_set_advertising_parameters, 6243 hci_stack->le_advertisements_interval_min, 6244 hci_stack->le_advertisements_interval_max, 6245 hci_stack->le_advertisements_type, 6246 hci_stack->le_advertisements_own_addr_type, 6247 hci_stack->le_advertisements_direct_address_type, 6248 hci_stack->le_advertisements_direct_address, 6249 hci_stack->le_advertisements_channel_map, 6250 hci_stack->le_advertisements_filter_policy); 6251 } 6252 return true; 6253 } 6254 6255 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6256 // assumption: only set if extended advertising is supported 6257 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6258 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6259 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6260 return true; 6261 } 6262 #endif 6263 6264 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6265 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6266 uint8_t adv_data_clean[31]; 6267 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6268 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6269 hci_stack->le_advertisements_data_len); 6270 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6271 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6272 if (hci_extended_advertising_supported()){ 6273 hci_stack->le_advertising_set_in_current_command = 0; 6274 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6275 } else 6276 #endif 6277 { 6278 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6279 } 6280 return true; 6281 } 6282 6283 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6284 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6285 uint8_t scan_data_clean[31]; 6286 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6287 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6288 hci_stack->le_scan_response_data_len); 6289 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6290 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6291 if (hci_extended_advertising_supported()){ 6292 hci_stack->le_advertising_set_in_current_command = 0; 6293 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6294 } else 6295 #endif 6296 { 6297 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6298 } 6299 return true; 6300 } 6301 6302 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6303 if (hci_extended_advertising_supported()) { 6304 btstack_linked_list_iterator_t it; 6305 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6306 while (btstack_linked_list_iterator_has_next(&it)){ 6307 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6308 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6309 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6310 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6311 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6312 return true; 6313 } 6314 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6315 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6316 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6317 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6318 advertising_set->advertising_handle, 6319 advertising_set->extended_params.advertising_event_properties, 6320 advertising_set->extended_params.primary_advertising_interval_min, 6321 advertising_set->extended_params.primary_advertising_interval_max, 6322 advertising_set->extended_params.primary_advertising_channel_map, 6323 advertising_set->extended_params.own_address_type, 6324 advertising_set->extended_params.peer_address_type, 6325 advertising_set->extended_params.peer_address, 6326 advertising_set->extended_params.advertising_filter_policy, 6327 advertising_set->extended_params.advertising_tx_power, 6328 advertising_set->extended_params.primary_advertising_phy, 6329 advertising_set->extended_params.secondary_advertising_max_skip, 6330 advertising_set->extended_params.secondary_advertising_phy, 6331 advertising_set->extended_params.advertising_sid, 6332 advertising_set->extended_params.scan_request_notification_enable 6333 ); 6334 return true; 6335 } 6336 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6337 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6338 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6339 return true; 6340 } 6341 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6342 uint16_t pos = advertising_set->adv_data_pos; 6343 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6344 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6345 if ((operation & 0x02) != 0){ 6346 // last fragment or complete data 6347 operation |= 2; 6348 advertising_set->adv_data_pos = 0; 6349 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6350 } else { 6351 advertising_set->adv_data_pos += data_to_upload; 6352 } 6353 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6354 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6355 return true; 6356 } 6357 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6358 uint16_t pos = advertising_set->scan_data_pos; 6359 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6360 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6361 if ((operation & 0x02) != 0){ 6362 advertising_set->scan_data_pos = 0; 6363 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6364 } else { 6365 advertising_set->scan_data_pos += data_to_upload; 6366 } 6367 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6368 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6369 return true; 6370 } 6371 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6372 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6373 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6374 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6375 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6376 advertising_set->advertising_handle, 6377 advertising_set->periodic_params.periodic_advertising_interval_min, 6378 advertising_set->periodic_params.periodic_advertising_interval_max, 6379 advertising_set->periodic_params.periodic_advertising_properties); 6380 return true; 6381 } 6382 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6383 uint16_t pos = advertising_set->periodic_data_pos; 6384 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6385 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6386 if ((operation & 0x02) != 0){ 6387 // last fragment or complete data 6388 operation |= 2; 6389 advertising_set->periodic_data_pos = 0; 6390 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6391 } else { 6392 advertising_set->periodic_data_pos += data_to_upload; 6393 } 6394 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6395 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6396 return true; 6397 } 6398 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6399 } 6400 } 6401 #endif 6402 6403 #endif 6404 6405 #ifdef ENABLE_LE_CENTRAL 6406 // if connect with whitelist was active and is not cancelled yet, wait until next time 6407 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6408 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6409 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6410 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6411 #endif 6412 #endif 6413 6414 // LE Whitelist Management 6415 if (whitelist_modification_pending){ 6416 // add/remove entries 6417 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6418 while (btstack_linked_list_iterator_has_next(&lit)){ 6419 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6420 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6421 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6422 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6423 bd_addr_type_t address_type = entry->address_type; 6424 bd_addr_t address; 6425 memcpy(address, entry->address, 6); 6426 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6427 // remove from whitelist if not scheduled for re-addition 6428 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6429 btstack_memory_whitelist_entry_free(entry); 6430 } 6431 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6432 return true; 6433 } 6434 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6435 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6436 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6437 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6438 return true; 6439 } 6440 } 6441 } 6442 6443 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6444 // LE Resolving List Management 6445 if (resolving_list_supported) { 6446 uint16_t i; 6447 switch (hci_stack->le_resolving_list_state) { 6448 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6449 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6450 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6451 return true; 6452 case LE_RESOLVING_LIST_READ_SIZE: 6453 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6454 hci_send_cmd(&hci_le_read_resolving_list_size); 6455 return true; 6456 case LE_RESOLVING_LIST_SEND_CLEAR: 6457 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6458 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6459 sizeof(hci_stack->le_resolving_list_add_entries)); 6460 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6461 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6462 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6463 sizeof(hci_stack->le_resolving_list_remove_entries)); 6464 hci_send_cmd(&hci_le_clear_resolving_list); 6465 return true; 6466 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6467 // first remove old entries 6468 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6469 uint8_t offset = i >> 3; 6470 uint8_t mask = 1 << (i & 7); 6471 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6472 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6473 bd_addr_t peer_identity_addreses; 6474 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6475 sm_key_t peer_irk; 6476 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6477 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6478 6479 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6480 // trigger whitelist entry 'update' (work around for controller bug) 6481 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6482 while (btstack_linked_list_iterator_has_next(&lit)) { 6483 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6484 if (entry->address_type != peer_identity_addr_type) continue; 6485 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6486 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6487 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6488 } 6489 #endif 6490 6491 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6492 peer_identity_addreses); 6493 return true; 6494 } 6495 6496 // then add new entries 6497 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6498 uint8_t offset = i >> 3; 6499 uint8_t mask = 1 << (i & 7); 6500 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6501 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6502 bd_addr_t peer_identity_addreses; 6503 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6504 sm_key_t peer_irk; 6505 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6506 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6507 if (btstack_is_null(peer_irk, 16)) continue; 6508 const uint8_t *local_irk = gap_get_persistent_irk(); 6509 // command uses format specifier 'P' that stores 16-byte value without flip 6510 uint8_t local_irk_flipped[16]; 6511 uint8_t peer_irk_flipped[16]; 6512 reverse_128(local_irk, local_irk_flipped); 6513 reverse_128(peer_irk, peer_irk_flipped); 6514 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6515 peer_irk_flipped, local_irk_flipped); 6516 return true; 6517 } 6518 6519 // finally, set privacy mode 6520 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6521 uint8_t offset = i >> 3; 6522 uint8_t mask = 1 << (i & 7); 6523 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6524 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6525 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6526 // Network Privacy Mode is default 6527 continue; 6528 } 6529 bd_addr_t peer_identity_address; 6530 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6531 sm_key_t peer_irk; 6532 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6533 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6534 if (btstack_is_null(peer_irk, 16)) continue; 6535 // command uses format specifier 'P' that stores 16-byte value without flip 6536 uint8_t peer_irk_flipped[16]; 6537 reverse_128(peer_irk, peer_irk_flipped); 6538 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6539 return true; 6540 } 6541 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6542 break; 6543 6544 default: 6545 break; 6546 } 6547 } 6548 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6549 #endif 6550 6551 #ifdef ENABLE_LE_CENTRAL 6552 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6553 // LE Whitelist Management 6554 if (periodic_list_modification_pending){ 6555 // add/remove entries 6556 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6557 while (btstack_linked_list_iterator_has_next(&lit)){ 6558 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6559 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6560 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6561 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6562 return true; 6563 } 6564 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6565 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6566 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6567 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6568 return true; 6569 } 6570 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6571 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6572 btstack_memory_periodic_advertiser_list_entry_free(entry); 6573 } 6574 } 6575 } 6576 #endif 6577 #endif 6578 6579 #ifdef ENABLE_LE_CENTRAL 6580 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6581 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6582 if (hci_stack->le_past_set_default_params){ 6583 hci_stack->le_past_set_default_params = false; 6584 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6585 hci_stack->le_past_mode, 6586 hci_stack->le_past_skip, 6587 hci_stack->le_past_sync_timeout, 6588 hci_stack->le_past_cte_type); 6589 return true; 6590 } 6591 #endif 6592 #endif 6593 #endif 6594 6595 // post-pone all actions until stack is fully working 6596 if (hci_stack->state != HCI_STATE_WORKING) return false; 6597 6598 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6599 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6600 6601 // Phase 4: restore state 6602 6603 #ifdef ENABLE_LE_CENTRAL 6604 // re-start scanning 6605 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6606 hci_stack->le_scanning_active = true; 6607 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6608 if (hci_extended_advertising_supported()){ 6609 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6610 } else 6611 #endif 6612 { 6613 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6614 } 6615 return true; 6616 } 6617 #endif 6618 6619 #ifdef ENABLE_LE_CENTRAL 6620 // re-start connecting 6621 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6622 bd_addr_t null_addr; 6623 memset(null_addr, 0, 6); 6624 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6625 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6626 hci_send_le_create_connection(1, 0, null_addr); 6627 return true; 6628 } 6629 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6630 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6631 switch(hci_stack->le_periodic_sync_request){ 6632 case LE_CONNECTING_DIRECT: 6633 case LE_CONNECTING_WHITELIST: 6634 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6635 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6636 hci_stack->le_periodic_sync_options, 6637 hci_stack->le_periodic_sync_advertising_sid, 6638 hci_stack->le_periodic_sync_advertiser_address_type, 6639 hci_stack->le_periodic_sync_advertiser_address, 6640 hci_stack->le_periodic_sync_skip, 6641 hci_stack->le_periodic_sync_timeout, 6642 hci_stack->le_periodic_sync_cte_type); 6643 return true; 6644 default: 6645 break; 6646 } 6647 } 6648 #endif 6649 #endif 6650 6651 #ifdef ENABLE_LE_PERIPHERAL 6652 // re-start advertising 6653 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6654 // check if advertisements should be enabled given 6655 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6656 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6657 6658 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6659 if (hci_extended_advertising_supported()){ 6660 const uint8_t advertising_handles[] = { 0 }; 6661 const uint16_t durations[] = { 0 }; 6662 const uint16_t max_events[] = { 0 }; 6663 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6664 } else 6665 #endif 6666 { 6667 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6668 } 6669 return true; 6670 } 6671 6672 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6673 if (hci_extended_advertising_supported()) { 6674 btstack_linked_list_iterator_t it; 6675 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6676 while (btstack_linked_list_iterator_has_next(&it)) { 6677 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6678 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6679 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6680 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6681 const uint16_t durations[] = { advertising_set->enable_timeout }; 6682 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6683 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6684 return true; 6685 } 6686 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6687 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6688 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6689 uint8_t enable = 1; 6690 if (advertising_set->periodic_include_adi){ 6691 enable |= 2; 6692 } 6693 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6694 return true; 6695 } 6696 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6697 } 6698 } 6699 #endif 6700 #endif 6701 6702 return false; 6703 } 6704 6705 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6706 static bool hci_run_iso_tasks(void){ 6707 btstack_linked_list_iterator_t it; 6708 6709 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6710 return false; 6711 } 6712 6713 // BIG 6714 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6715 while (btstack_linked_list_iterator_has_next(&it)){ 6716 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6717 switch (big->state){ 6718 case LE_AUDIO_BIG_STATE_CREATE: 6719 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6720 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6721 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6722 hci_send_cmd(&hci_le_create_big, 6723 big->params->big_handle, 6724 big->params->advertising_handle, 6725 big->params->num_bis, 6726 big->params->sdu_interval_us, 6727 big->params->max_sdu, 6728 big->params->max_transport_latency_ms, 6729 big->params->rtn, 6730 big->params->phy, 6731 big->params->packing, 6732 big->params->framing, 6733 big->params->encryption, 6734 big->params->broadcast_code); 6735 return true; 6736 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6737 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6738 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); 6739 return true; 6740 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6741 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6742 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6743 return true; 6744 case LE_AUDIO_BIG_STATE_TERMINATE: 6745 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6746 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6747 return true; 6748 default: 6749 break; 6750 } 6751 } 6752 6753 // BIG Sync 6754 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6755 while (btstack_linked_list_iterator_has_next(&it)){ 6756 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6757 switch (big_sync->state){ 6758 case LE_AUDIO_BIG_STATE_CREATE: 6759 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6760 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6761 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6762 hci_send_cmd(&hci_le_big_create_sync, 6763 big_sync->params->big_handle, 6764 big_sync->params->sync_handle, 6765 big_sync->params->encryption, 6766 big_sync->params->broadcast_code, 6767 big_sync->params->mse, 6768 big_sync->params->big_sync_timeout_10ms, 6769 big_sync->params->num_bis, 6770 big_sync->params->bis_indices); 6771 return true; 6772 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6773 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6774 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); 6775 return true; 6776 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6777 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6778 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6779 return true; 6780 case LE_AUDIO_BIG_STATE_TERMINATE: 6781 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6782 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6783 return true; 6784 default: 6785 break; 6786 } 6787 } 6788 6789 // CIG 6790 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6791 while (btstack_linked_list_iterator_has_next(&it)) { 6792 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6793 uint8_t i; 6794 // Set CIG Parameters 6795 uint8_t cis_id[MAX_NR_CIS]; 6796 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6797 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6798 uint8_t phy_c_to_p[MAX_NR_CIS]; 6799 uint8_t phy_p_to_c[MAX_NR_CIS]; 6800 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6801 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6802 switch (cig->state) { 6803 case LE_AUDIO_CIG_STATE_CREATE: 6804 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6805 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6806 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6807 le_audio_cig_params_t * params = cig->params; 6808 for (i = 0; i < params->num_cis; i++) { 6809 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6810 cis_id[i] = cis_params->cis_id; 6811 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6812 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6813 phy_c_to_p[i] = cis_params->phy_c_to_p; 6814 phy_p_to_c[i] = cis_params->phy_p_to_c; 6815 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6816 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6817 } 6818 hci_send_cmd(&hci_le_set_cig_parameters, 6819 cig->cig_id, 6820 params->sdu_interval_c_to_p, 6821 params->sdu_interval_p_to_c, 6822 params->worst_case_sca, 6823 params->packing, 6824 params->framing, 6825 params->max_transport_latency_c_to_p, 6826 params->max_transport_latency_p_to_c, 6827 params->num_cis, 6828 cis_id, 6829 max_sdu_c_to_p, 6830 max_sdu_p_to_c, 6831 phy_c_to_p, 6832 phy_p_to_c, 6833 rtn_c_to_p, 6834 rtn_p_to_c 6835 ); 6836 return true; 6837 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6838 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6839 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6840 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6841 for (i=0;i<cig->num_cis;i++){ 6842 cig->cis_setup_active[i] = true; 6843 } 6844 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6845 return true; 6846 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6847 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6848 // find next path to setup 6849 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6850 if (cig->cis_established[cis_index] == false) { 6851 continue; 6852 } 6853 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6854 bool setup = true; 6855 if (cis_direction == 0){ 6856 // 0 - input - host to controller 6857 // we are central => central to peripheral 6858 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6859 } else { 6860 // 1 - output - controller to host 6861 // we are central => peripheral to central 6862 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6863 } 6864 if (setup){ 6865 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6866 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6867 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6868 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, 0, 0, 0, 0, 0, NULL); 6869 return true; 6870 } 6871 cig->state_vars.next_cis++; 6872 } 6873 // emit done 6874 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6875 default: 6876 break; 6877 } 6878 } 6879 6880 // CIS Accept/Reject 6881 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6882 while (btstack_linked_list_iterator_has_next(&it)) { 6883 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6884 hci_con_handle_t con_handle; 6885 switch (iso_stream->state){ 6886 case HCI_ISO_STREAM_W2_ACCEPT: 6887 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6888 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6889 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6890 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 6891 return true; 6892 case HCI_ISO_STREAM_W2_REJECT: 6893 con_handle = iso_stream->cis_handle; 6894 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6895 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6896 hci_iso_stream_finalize(iso_stream); 6897 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6898 return true; 6899 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6900 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6901 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6902 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6903 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 0, 0, 0, 0, 0, 0, 0, NULL); 6904 break; 6905 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6906 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6907 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6908 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6909 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 1, 0, 0, 0, 0, 0, 0, NULL); 6910 break; 6911 default: 6912 break; 6913 } 6914 } 6915 6916 return false; 6917 } 6918 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6919 #endif 6920 6921 static bool hci_run_general_pending_commands(void){ 6922 btstack_linked_item_t * it; 6923 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6924 hci_connection_t * connection = (hci_connection_t *) it; 6925 6926 switch(connection->state){ 6927 case SEND_CREATE_CONNECTION: 6928 switch(connection->address_type){ 6929 #ifdef ENABLE_CLASSIC 6930 case BD_ADDR_TYPE_ACL: 6931 log_info("sending hci_create_connection"); 6932 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6933 break; 6934 #endif 6935 default: 6936 #ifdef ENABLE_BLE 6937 #ifdef ENABLE_LE_CENTRAL 6938 log_info("sending hci_le_create_connection"); 6939 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6940 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6941 hci_send_le_create_connection(0, connection->address_type, connection->address); 6942 connection->state = SENT_CREATE_CONNECTION; 6943 #endif 6944 #endif 6945 break; 6946 } 6947 return true; 6948 6949 #ifdef ENABLE_CLASSIC 6950 case RECEIVED_CONNECTION_REQUEST: 6951 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6952 log_info("sending hci_accept_connection_request"); 6953 connection->state = ACCEPTED_CONNECTION_REQUEST; 6954 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6955 return true; 6956 } 6957 break; 6958 #endif 6959 case SEND_DISCONNECT: 6960 connection->state = SENT_DISCONNECT; 6961 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6962 return true; 6963 6964 default: 6965 break; 6966 } 6967 6968 // no further commands if connection is about to get shut down 6969 if (connection->state == SENT_DISCONNECT) continue; 6970 6971 #ifdef ENABLE_CLASSIC 6972 6973 // Handling link key request requires remote supported features 6974 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6975 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6976 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6977 6978 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6979 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6980 if (have_link_key && security_level_sufficient){ 6981 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6982 } else { 6983 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6984 } 6985 return true; 6986 } 6987 6988 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6989 log_info("denying to pin request"); 6990 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6991 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6992 return true; 6993 } 6994 6995 // security assessment requires remote features 6996 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6997 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6998 hci_ssp_assess_security_on_io_cap_request(connection); 6999 // 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 7000 } 7001 7002 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7003 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7004 // set authentication requirements: 7005 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7006 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7007 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7008 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7009 authreq |= 1; 7010 } 7011 bool bonding = hci_stack->bondable; 7012 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7013 // if we have received IO Cap Response, we're in responder role 7014 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7015 if (bonding && !remote_bonding){ 7016 log_info("Remote not bonding, dropping local flag"); 7017 bonding = false; 7018 } 7019 } 7020 if (bonding){ 7021 if (connection->bonding_flags & BONDING_DEDICATED){ 7022 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7023 } else { 7024 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7025 } 7026 } 7027 uint8_t have_oob_data = 0; 7028 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7029 if (connection->classic_oob_c_192 != NULL){ 7030 have_oob_data |= 1; 7031 } 7032 if (connection->classic_oob_c_256 != NULL){ 7033 have_oob_data |= 2; 7034 } 7035 #endif 7036 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7037 return true; 7038 } 7039 7040 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7041 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7042 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7043 return true; 7044 } 7045 7046 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7047 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7048 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7049 const uint8_t zero[16] = { 0 }; 7050 const uint8_t * r_192 = zero; 7051 const uint8_t * c_192 = zero; 7052 const uint8_t * r_256 = zero; 7053 const uint8_t * c_256 = zero; 7054 // verify P-256 OOB 7055 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7056 c_256 = connection->classic_oob_c_256; 7057 if (connection->classic_oob_r_256 != NULL) { 7058 r_256 = connection->classic_oob_r_256; 7059 } 7060 } 7061 // verify P-192 OOB 7062 if ((connection->classic_oob_c_192 != NULL)) { 7063 c_192 = connection->classic_oob_c_192; 7064 if (connection->classic_oob_r_192 != NULL) { 7065 r_192 = connection->classic_oob_r_192; 7066 } 7067 } 7068 7069 // assess security 7070 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7071 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7072 if (need_level_4 && !can_reach_level_4){ 7073 log_info("Level 4 required, but not possible -> abort"); 7074 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7075 // send oob negative reply 7076 c_256 = NULL; 7077 c_192 = NULL; 7078 } 7079 7080 // Reply 7081 if (c_256 != zero) { 7082 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7083 } else if (c_192 != zero){ 7084 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7085 } else { 7086 hci_stack->classic_oob_con_handle = connection->con_handle; 7087 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7088 } 7089 return true; 7090 } 7091 #endif 7092 7093 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7094 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7095 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7096 return true; 7097 } 7098 7099 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7100 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7101 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7102 return true; 7103 } 7104 7105 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7106 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7107 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7108 return true; 7109 } 7110 7111 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7112 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7113 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7114 connection->state = SENT_DISCONNECT; 7115 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7116 return true; 7117 } 7118 7119 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7120 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7121 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7122 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7123 return true; 7124 } 7125 7126 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7127 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7128 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7129 return true; 7130 } 7131 7132 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7133 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7134 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7135 return true; 7136 } 7137 7138 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7139 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7140 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7141 return true; 7142 } 7143 7144 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7145 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7146 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7147 return true; 7148 } 7149 7150 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7151 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7152 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7153 return true; 7154 } 7155 #endif 7156 7157 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7158 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7159 #ifdef ENABLE_CLASSIC 7160 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7161 #endif 7162 if (connection->state != SENT_DISCONNECT){ 7163 connection->state = SENT_DISCONNECT; 7164 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7165 return true; 7166 } 7167 } 7168 7169 #ifdef ENABLE_CLASSIC 7170 uint16_t sniff_min_interval; 7171 switch (connection->sniff_min_interval){ 7172 case 0: 7173 break; 7174 case 0xffff: 7175 connection->sniff_min_interval = 0; 7176 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7177 return true; 7178 default: 7179 sniff_min_interval = connection->sniff_min_interval; 7180 connection->sniff_min_interval = 0; 7181 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7182 return true; 7183 } 7184 7185 if (connection->sniff_subrating_max_latency != 0xffff){ 7186 uint16_t max_latency = connection->sniff_subrating_max_latency; 7187 connection->sniff_subrating_max_latency = 0; 7188 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7189 return true; 7190 } 7191 7192 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7193 uint8_t service_type = (uint8_t) connection->qos_service_type; 7194 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7195 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); 7196 return true; 7197 } 7198 7199 if (connection->request_role != HCI_ROLE_INVALID){ 7200 hci_role_t role = connection->request_role; 7201 connection->request_role = HCI_ROLE_INVALID; 7202 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7203 return true; 7204 } 7205 #endif 7206 7207 if (connection->gap_connection_tasks != 0){ 7208 #ifdef ENABLE_CLASSIC 7209 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7210 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7211 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7212 return true; 7213 } 7214 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7215 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7216 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7217 return true; 7218 } 7219 #endif 7220 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7221 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7222 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7223 return true; 7224 } 7225 #ifdef ENABLE_BLE 7226 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7227 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7228 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7229 return true; 7230 } 7231 #endif 7232 } 7233 7234 #ifdef ENABLE_BLE 7235 switch (connection->le_con_parameter_update_state){ 7236 // response to L2CAP CON PARAMETER UPDATE REQUEST 7237 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7238 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7239 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7240 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7241 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7242 return true; 7243 case CON_PARAMETER_UPDATE_REPLY: 7244 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7245 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7246 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7247 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7248 return true; 7249 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7250 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7251 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7252 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7253 return true; 7254 default: 7255 break; 7256 } 7257 if (connection->le_phy_update_all_phys != 0xffu){ 7258 uint8_t all_phys = connection->le_phy_update_all_phys; 7259 connection->le_phy_update_all_phys = 0xff; 7260 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); 7261 return true; 7262 } 7263 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7264 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7265 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7266 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7267 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7268 return true; 7269 } 7270 if (connection->le_past_advertising_handle != 0xff){ 7271 uint8_t advertising_handle = connection->le_past_advertising_handle; 7272 connection->le_past_advertising_handle = 0xff; 7273 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7274 return true; 7275 } 7276 #endif 7277 #endif 7278 } 7279 return false; 7280 } 7281 7282 static void hci_run(void){ 7283 7284 // stack state sub statemachines 7285 switch (hci_stack->state) { 7286 case HCI_STATE_INITIALIZING: 7287 hci_initializing_run(); 7288 break; 7289 case HCI_STATE_HALTING: 7290 hci_halting_run(); 7291 break; 7292 case HCI_STATE_FALLING_ASLEEP: 7293 hci_falling_asleep_run(); 7294 break; 7295 default: 7296 break; 7297 } 7298 7299 // allow to run after initialization to working transition 7300 if (hci_stack->state != HCI_STATE_WORKING){ 7301 return; 7302 } 7303 7304 bool done; 7305 7306 // send continuation fragments first, as they block the prepared packet buffer 7307 done = hci_run_acl_fragments(); 7308 if (done) return; 7309 7310 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7311 done = hci_run_iso_fragments(); 7312 if (done) return; 7313 #endif 7314 7315 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7316 // send host num completed packets next as they don't require num_cmd_packets > 0 7317 if (!hci_can_send_comand_packet_transport()) return; 7318 if (hci_stack->host_completed_packets){ 7319 hci_host_num_completed_packets(); 7320 return; 7321 } 7322 #endif 7323 7324 if (!hci_can_send_command_packet_now()) return; 7325 7326 // global/non-connection oriented commands 7327 7328 7329 #ifdef ENABLE_CLASSIC 7330 // general gap classic 7331 done = hci_run_general_gap_classic(); 7332 if (done) return; 7333 #endif 7334 7335 #ifdef ENABLE_BLE 7336 // general gap le 7337 done = hci_run_general_gap_le(); 7338 if (done) return; 7339 7340 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7341 // ISO related tasks, e.g. BIG create/terminate/sync 7342 done = hci_run_iso_tasks(); 7343 if (done) return; 7344 #endif 7345 #endif 7346 7347 // send pending HCI commands 7348 hci_run_general_pending_commands(); 7349 } 7350 7351 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7352 // house-keeping 7353 7354 #ifdef ENABLE_CLASSIC 7355 bd_addr_t addr; 7356 hci_connection_t * conn; 7357 #endif 7358 #ifdef ENABLE_LE_CENTRAL 7359 uint8_t initiator_filter_policy; 7360 #endif 7361 7362 uint16_t opcode = little_endian_read_16(packet, 0); 7363 switch (opcode) { 7364 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7365 hci_stack->loopback_mode = packet[3]; 7366 break; 7367 7368 #ifdef ENABLE_CLASSIC 7369 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7370 reverse_bd_addr(&packet[3], addr); 7371 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7372 7373 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7374 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7375 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7376 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7377 } 7378 7379 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7380 if (!conn) { 7381 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7382 if (!conn) { 7383 // notify client that alloc failed 7384 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7385 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7386 } 7387 conn->state = SEND_CREATE_CONNECTION; 7388 } 7389 7390 log_info("conn state %u", conn->state); 7391 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7392 switch (conn->state) { 7393 // if connection active exists 7394 case OPEN: 7395 // and OPEN, emit connection complete command 7396 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7397 // packet not sent to controller 7398 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7399 case RECEIVED_DISCONNECTION_COMPLETE: 7400 // create connection triggered in disconnect complete event, let's do it now 7401 break; 7402 case SEND_CREATE_CONNECTION: 7403 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7404 if (hci_classic_operation_active()){ 7405 return ERROR_CODE_SUCCESS; 7406 } 7407 #endif 7408 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7409 break; 7410 default: 7411 // otherwise, just ignore as it is already in the open process 7412 // packet not sent to controller 7413 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7414 } 7415 conn->state = SENT_CREATE_CONNECTION; 7416 7417 // track outgoing connection 7418 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7419 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7420 break; 7421 7422 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7423 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7424 if (conn == NULL) { 7425 // neither SCO nor ACL connection for con handle 7426 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7427 } else { 7428 switch (conn->address_type){ 7429 case BD_ADDR_TYPE_ACL: 7430 // assert SCO connection does not exit 7431 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7432 return ERROR_CODE_COMMAND_DISALLOWED; 7433 } 7434 // allocate connection struct 7435 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7436 HCI_ROLE_MASTER); 7437 if (!conn) { 7438 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7439 } 7440 break; 7441 case BD_ADDR_TYPE_SCO: 7442 // update of existing SCO connection 7443 break; 7444 default: 7445 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7446 } 7447 } 7448 7449 // conn refers to hci connection of type sco now 7450 7451 conn->state = SENT_CREATE_CONNECTION; 7452 7453 // track outgoing connection to handle command status with error 7454 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7455 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7456 7457 // setup_synchronous_connection? Voice setting at offset 22 7458 // TODO: compare to current setting if sco connection already active 7459 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7460 break; 7461 7462 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7463 // get SCO connection 7464 reverse_bd_addr(&packet[3], addr); 7465 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7466 if (conn == NULL){ 7467 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7468 } 7469 7470 conn->state = ACCEPTED_CONNECTION_REQUEST; 7471 7472 // track outgoing connection to handle command status with error 7473 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7474 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7475 7476 // accept_synchronous_connection? Voice setting at offset 18 7477 // TODO: compare to current setting if sco connection already active 7478 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7479 break; 7480 #endif 7481 7482 #ifdef ENABLE_BLE 7483 #ifdef ENABLE_LE_CENTRAL 7484 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7485 // white list used? 7486 initiator_filter_policy = packet[7]; 7487 switch (initiator_filter_policy) { 7488 case 0: 7489 // whitelist not used 7490 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7491 break; 7492 case 1: 7493 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7494 break; 7495 default: 7496 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7497 break; 7498 } 7499 // track outgoing connection 7500 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7501 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7502 break; 7503 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7504 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7505 // white list used? 7506 initiator_filter_policy = packet[3]; 7507 switch (initiator_filter_policy) { 7508 case 0: 7509 // whitelist not used 7510 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7511 break; 7512 case 1: 7513 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7514 break; 7515 default: 7516 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7517 break; 7518 } 7519 // track outgoing connection 7520 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7521 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7522 break; 7523 #endif 7524 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7525 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7526 break; 7527 #endif 7528 #endif /* ENABLE_BLE */ 7529 default: 7530 break; 7531 } 7532 7533 hci_stack->num_cmd_packets--; 7534 7535 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7536 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7537 if (err != 0){ 7538 return ERROR_CODE_HARDWARE_FAILURE; 7539 } 7540 return ERROR_CODE_SUCCESS; 7541 } 7542 7543 // disconnect because of security block 7544 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7545 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7546 if (!connection) return; 7547 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7548 } 7549 7550 7551 // Configure Secure Simple Pairing 7552 7553 #ifdef ENABLE_CLASSIC 7554 7555 // enable will enable SSP during init 7556 void gap_ssp_set_enable(int enable){ 7557 hci_stack->ssp_enable = enable; 7558 } 7559 7560 static int hci_local_ssp_activated(void){ 7561 return gap_ssp_supported() && hci_stack->ssp_enable; 7562 } 7563 7564 // if set, BTstack will respond to io capability request using authentication requirement 7565 void gap_ssp_set_io_capability(int io_capability){ 7566 hci_stack->ssp_io_capability = io_capability; 7567 } 7568 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7569 hci_stack->ssp_authentication_requirement = authentication_requirement; 7570 } 7571 7572 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7573 void gap_ssp_set_auto_accept(int auto_accept){ 7574 hci_stack->ssp_auto_accept = auto_accept; 7575 } 7576 7577 void gap_secure_connections_enable(bool enable){ 7578 hci_stack->secure_connections_enable = enable; 7579 } 7580 bool gap_secure_connections_active(void){ 7581 return hci_stack->secure_connections_active; 7582 } 7583 7584 #endif 7585 7586 // va_list part of hci_send_cmd 7587 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7588 if (!hci_can_send_command_packet_now()){ 7589 log_error("hci_send_cmd called but cannot send packet now"); 7590 return ERROR_CODE_COMMAND_DISALLOWED; 7591 } 7592 7593 // for HCI INITIALIZATION 7594 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7595 hci_stack->last_cmd_opcode = cmd->opcode; 7596 7597 hci_reserve_packet_buffer(); 7598 uint8_t * packet = hci_stack->hci_packet_buffer; 7599 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7600 uint8_t status = hci_send_cmd_packet(packet, size); 7601 7602 // release packet buffer on error or for synchronous transport implementations 7603 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7604 hci_release_packet_buffer(); 7605 hci_emit_transport_packet_sent(); 7606 } 7607 7608 return status; 7609 } 7610 7611 /** 7612 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7613 */ 7614 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7615 va_list argptr; 7616 va_start(argptr, cmd); 7617 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7618 va_end(argptr); 7619 return status; 7620 } 7621 7622 // Create various non-HCI events. 7623 // TODO: generalize, use table similar to hci_create_command 7624 7625 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7626 // dump packet 7627 if (dump) { 7628 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7629 } 7630 7631 // dispatch to all event handlers 7632 btstack_linked_list_iterator_t it; 7633 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7634 while (btstack_linked_list_iterator_has_next(&it)){ 7635 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7636 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7637 } 7638 } 7639 7640 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7641 if (!hci_stack->acl_packet_handler) return; 7642 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7643 } 7644 7645 #ifdef ENABLE_CLASSIC 7646 static void hci_notify_if_sco_can_send_now(void){ 7647 // notify SCO sender if waiting 7648 if (!hci_stack->sco_waiting_for_can_send_now) return; 7649 if (hci_can_send_sco_packet_now()){ 7650 hci_stack->sco_waiting_for_can_send_now = 0; 7651 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7652 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7653 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7654 } 7655 } 7656 7657 // parsing end emitting has been merged to reduce code size 7658 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7659 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7660 7661 uint8_t * eir_data; 7662 ad_context_t context; 7663 const uint8_t * name; 7664 uint8_t name_len; 7665 7666 if (size < 3) return; 7667 7668 int event_type = hci_event_packet_get_type(packet); 7669 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7670 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7671 7672 switch (event_type){ 7673 case HCI_EVENT_INQUIRY_RESULT: 7674 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7675 if (size != (3 + (num_responses * 14))) return; 7676 break; 7677 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7678 if (size != 257) return; 7679 if (num_responses != 1) return; 7680 break; 7681 default: 7682 return; 7683 } 7684 7685 // event[1] is set at the end 7686 int i; 7687 for (i=0; i<num_responses;i++){ 7688 memset(event, 0, sizeof(event)); 7689 event[0] = GAP_EVENT_INQUIRY_RESULT; 7690 uint8_t event_size = 27; // if name is not set by EIR 7691 7692 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7693 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7694 (void)memcpy(&event[9], 7695 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7696 3); // class of device 7697 (void)memcpy(&event[12], 7698 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7699 2); // clock offset 7700 7701 switch (event_type){ 7702 case HCI_EVENT_INQUIRY_RESULT: 7703 // 14,15,16,17 = 0, size 18 7704 break; 7705 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7706 event[14] = 1; 7707 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7708 // 16,17 = 0, size 18 7709 break; 7710 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7711 event[14] = 1; 7712 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7713 // EIR packets only contain a single inquiry response 7714 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7715 name = NULL; 7716 // Iterate over EIR data 7717 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7718 uint8_t data_type = ad_iterator_get_data_type(&context); 7719 uint8_t data_size = ad_iterator_get_data_len(&context); 7720 const uint8_t * data = ad_iterator_get_data(&context); 7721 // Prefer Complete Local Name over Shortened Local Name 7722 switch (data_type){ 7723 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7724 if (name) continue; 7725 /* fall through */ 7726 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7727 name = data; 7728 name_len = data_size; 7729 break; 7730 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7731 if (data_size != 8) break; 7732 event[16] = 1; 7733 memcpy(&event[17], data, 8); 7734 break; 7735 default: 7736 break; 7737 } 7738 } 7739 if (name){ 7740 event[25] = 1; 7741 // truncate name if needed 7742 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7743 event[26] = len; 7744 (void)memcpy(&event[27], name, len); 7745 event_size += len; 7746 } 7747 break; 7748 default: 7749 return; 7750 } 7751 event[1] = event_size - 2; 7752 hci_emit_event(event, event_size, 1); 7753 } 7754 } 7755 #endif 7756 7757 void hci_emit_state(void){ 7758 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7759 uint8_t event[3]; 7760 event[0] = BTSTACK_EVENT_STATE; 7761 event[1] = sizeof(event) - 2u; 7762 event[2] = hci_stack->state; 7763 hci_emit_event(event, sizeof(event), 1); 7764 } 7765 7766 #ifdef ENABLE_CLASSIC 7767 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7768 uint8_t event[13]; 7769 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7770 event[1] = sizeof(event) - 2; 7771 event[2] = status; 7772 little_endian_store_16(event, 3, con_handle); 7773 reverse_bd_addr(address, &event[5]); 7774 event[11] = 1; // ACL connection 7775 event[12] = 0; // encryption disabled 7776 hci_emit_event(event, sizeof(event), 1); 7777 } 7778 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7779 if (disable_l2cap_timeouts) return; 7780 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7781 uint8_t event[4]; 7782 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7783 event[1] = sizeof(event) - 2; 7784 little_endian_store_16(event, 2, conn->con_handle); 7785 hci_emit_event(event, sizeof(event), 1); 7786 } 7787 #endif 7788 7789 #ifdef ENABLE_BLE 7790 #ifdef ENABLE_LE_CENTRAL 7791 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){ 7792 uint8_t event[21]; 7793 event[0] = HCI_EVENT_LE_META; 7794 event[1] = sizeof(event) - 2u; 7795 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7796 event[3] = status; 7797 little_endian_store_16(event, 4, con_handle); 7798 event[6] = 0; // TODO: role 7799 event[7] = address_type; 7800 reverse_bd_addr(address, &event[8]); 7801 little_endian_store_16(event, 14, 0); // interval 7802 little_endian_store_16(event, 16, 0); // latency 7803 little_endian_store_16(event, 18, 0); // supervision timeout 7804 event[20] = 0; // master clock accuracy 7805 hci_emit_event(event, sizeof(event), 1); 7806 } 7807 #endif 7808 #endif 7809 7810 static void hci_emit_transport_packet_sent(void){ 7811 // notify upper stack that it might be possible to send again 7812 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7813 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7814 } 7815 7816 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7817 uint8_t event[6]; 7818 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7819 event[1] = sizeof(event) - 2u; 7820 event[2] = 0; // status = OK 7821 little_endian_store_16(event, 3, con_handle); 7822 event[5] = reason; 7823 hci_emit_event(event, sizeof(event), 1); 7824 } 7825 7826 static void hci_emit_nr_connections_changed(void){ 7827 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7828 uint8_t event[3]; 7829 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7830 event[1] = sizeof(event) - 2u; 7831 event[2] = nr_hci_connections(); 7832 hci_emit_event(event, sizeof(event), 1); 7833 } 7834 7835 static void hci_emit_hci_open_failed(void){ 7836 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7837 uint8_t event[2]; 7838 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7839 event[1] = sizeof(event) - 2u; 7840 hci_emit_event(event, sizeof(event), 1); 7841 } 7842 7843 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7844 log_info("hci_emit_dedicated_bonding_result %u ", status); 7845 uint8_t event[9]; 7846 int pos = 0; 7847 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7848 event[pos++] = sizeof(event) - 2u; 7849 event[pos++] = status; 7850 reverse_bd_addr(address, &event[pos]); 7851 hci_emit_event(event, sizeof(event), 1); 7852 } 7853 7854 7855 #ifdef ENABLE_CLASSIC 7856 7857 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7858 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7859 uint8_t event[5]; 7860 int pos = 0; 7861 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7862 event[pos++] = sizeof(event) - 2; 7863 little_endian_store_16(event, 2, con_handle); 7864 pos += 2; 7865 event[pos++] = level; 7866 hci_emit_event(event, sizeof(event), 1); 7867 } 7868 7869 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7870 if (!connection) return LEVEL_0; 7871 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7872 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7873 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7874 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7875 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7876 // LEVEL 4 always requires 128 bit encrytion key size 7877 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7878 security_level = LEVEL_3; 7879 } 7880 return security_level; 7881 } 7882 7883 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7884 uint8_t event[4]; 7885 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7886 event[1] = sizeof(event) - 2; 7887 event[2] = discoverable; 7888 event[3] = connectable; 7889 hci_emit_event(event, sizeof(event), 1); 7890 } 7891 7892 // query if remote side supports eSCO 7893 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7894 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7895 if (!connection) return false; 7896 return (connection->remote_supported_features[0] & 1) != 0; 7897 } 7898 7899 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 7900 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7901 if (!connection) return 0; 7902 return connection->remote_supported_sco_packets; 7903 } 7904 7905 static bool hci_ssp_supported(hci_connection_t * connection){ 7906 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7907 return (connection->bonding_flags & mask) == mask; 7908 } 7909 7910 // query if remote side supports SSP 7911 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7912 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7913 if (!connection) return false; 7914 return hci_ssp_supported(connection) ? 1 : 0; 7915 } 7916 7917 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7918 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7919 } 7920 7921 /** 7922 * Check if remote supported features query has completed 7923 */ 7924 bool hci_remote_features_available(hci_con_handle_t handle){ 7925 hci_connection_t * connection = hci_connection_for_handle(handle); 7926 if (!connection) return false; 7927 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7928 } 7929 7930 /** 7931 * Trigger remote supported features query 7932 */ 7933 7934 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7935 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7936 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7937 } 7938 } 7939 7940 void hci_remote_features_query(hci_con_handle_t con_handle){ 7941 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7942 if (!connection) return; 7943 hci_trigger_remote_features_for_connection(connection); 7944 hci_run(); 7945 } 7946 7947 // GAP API 7948 /** 7949 * @bbrief enable/disable bonding. default is enabled 7950 * @praram enabled 7951 */ 7952 void gap_set_bondable_mode(int enable){ 7953 hci_stack->bondable = enable ? 1 : 0; 7954 } 7955 /** 7956 * @brief Get bondable mode. 7957 * @return 1 if bondable 7958 */ 7959 int gap_get_bondable_mode(void){ 7960 return hci_stack->bondable; 7961 } 7962 7963 /** 7964 * @brief map link keys to security levels 7965 */ 7966 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7967 switch (link_key_type){ 7968 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7969 return LEVEL_4; 7970 case COMBINATION_KEY: 7971 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7972 return LEVEL_3; 7973 default: 7974 return LEVEL_2; 7975 } 7976 } 7977 7978 /** 7979 * @brief map link keys to secure connection yes/no 7980 */ 7981 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7982 switch (link_key_type){ 7983 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7984 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7985 return true; 7986 default: 7987 return false; 7988 } 7989 } 7990 7991 /** 7992 * @brief map link keys to authenticated 7993 */ 7994 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7995 switch (link_key_type){ 7996 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7997 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7998 return true; 7999 default: 8000 return false; 8001 } 8002 } 8003 8004 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8005 log_info("gap_mitm_protection_required_for_security_level %u", level); 8006 return level > LEVEL_2; 8007 } 8008 8009 /** 8010 * @brief get current security level 8011 */ 8012 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8013 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8014 if (!connection) return LEVEL_0; 8015 return gap_security_level_for_connection(connection); 8016 } 8017 8018 /** 8019 * @brief request connection to device to 8020 * @result GAP_AUTHENTICATION_RESULT 8021 */ 8022 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8023 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8024 if (!connection){ 8025 hci_emit_security_level(con_handle, LEVEL_0); 8026 return; 8027 } 8028 8029 btstack_assert(hci_is_le_connection(connection) == false); 8030 8031 // 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) 8032 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8033 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8034 requested_level = LEVEL_4; 8035 } 8036 8037 gap_security_level_t current_level = gap_security_level(con_handle); 8038 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8039 requested_level, connection->requested_security_level, current_level); 8040 8041 // authentication active if authentication request was sent or planned level > 0 8042 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8043 if (authentication_active){ 8044 // authentication already active 8045 if (connection->requested_security_level < requested_level){ 8046 // increase requested level as new level is higher 8047 // TODO: handle re-authentication when done 8048 connection->requested_security_level = requested_level; 8049 } 8050 } else { 8051 // no request active, notify if security sufficient 8052 if (requested_level <= current_level){ 8053 hci_emit_security_level(con_handle, current_level); 8054 return; 8055 } 8056 8057 // store request 8058 connection->requested_security_level = requested_level; 8059 8060 // start to authenticate connection 8061 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8062 8063 // request remote features if not already active, also trigger hci_run 8064 hci_remote_features_query(con_handle); 8065 } 8066 } 8067 8068 /** 8069 * @brief start dedicated bonding with device. disconnect after bonding 8070 * @param device 8071 * @param request MITM protection 8072 * @result GAP_DEDICATED_BONDING_COMPLETE 8073 */ 8074 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8075 8076 // create connection state machine 8077 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8078 8079 if (!connection){ 8080 return BTSTACK_MEMORY_ALLOC_FAILED; 8081 } 8082 8083 // delete link key 8084 gap_drop_link_key_for_bd_addr(device); 8085 8086 // configure LEVEL_2/3, dedicated bonding 8087 connection->state = SEND_CREATE_CONNECTION; 8088 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8089 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8090 connection->bonding_flags = BONDING_DEDICATED; 8091 8092 hci_run(); 8093 8094 return 0; 8095 } 8096 8097 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8098 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8099 if (connection == NULL){ 8100 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8101 } 8102 if (defer){ 8103 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8104 } else { 8105 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8106 // trigger disconnect 8107 hci_run(); 8108 } 8109 return ERROR_CODE_SUCCESS; 8110 } 8111 8112 void gap_set_local_name(const char * local_name){ 8113 hci_stack->local_name = local_name; 8114 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8115 // also update EIR if not set by user 8116 if (hci_stack->eir_data == NULL){ 8117 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8118 } 8119 hci_run(); 8120 } 8121 #endif 8122 8123 8124 #ifdef ENABLE_BLE 8125 8126 #ifdef ENABLE_LE_CENTRAL 8127 void gap_start_scan(void){ 8128 hci_stack->le_scanning_enabled = true; 8129 hci_run(); 8130 } 8131 8132 void gap_stop_scan(void){ 8133 hci_stack->le_scanning_enabled = false; 8134 hci_run(); 8135 } 8136 8137 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8138 hci_stack->le_scan_type = scan_type; 8139 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8140 hci_stack->le_scan_interval = scan_interval; 8141 hci_stack->le_scan_window = scan_window; 8142 hci_stack->le_scanning_param_update = true; 8143 hci_run(); 8144 } 8145 8146 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8147 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8148 } 8149 8150 void gap_set_scan_duplicate_filter(bool enabled){ 8151 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8152 } 8153 8154 void gap_set_scan_phys(uint8_t phys){ 8155 // LE Coded and LE 1M PHY 8156 hci_stack->le_scan_phys = phys & 0x05; 8157 } 8158 8159 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 8160 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8161 if (!conn){ 8162 // disallow if le connection is already outgoing 8163 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8164 log_error("le connection already active"); 8165 return ERROR_CODE_COMMAND_DISALLOWED; 8166 } 8167 8168 log_info("gap_connect: no connection exists yet, creating context"); 8169 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8170 if (!conn){ 8171 // notify client that alloc failed 8172 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 8173 log_info("gap_connect: failed to alloc hci_connection_t"); 8174 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 8175 } 8176 8177 // set le connecting state 8178 if (hci_is_le_connection_type(addr_type)){ 8179 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8180 } 8181 8182 conn->state = SEND_CREATE_CONNECTION; 8183 log_info("gap_connect: send create connection next"); 8184 hci_run(); 8185 return ERROR_CODE_SUCCESS; 8186 } 8187 8188 if (!hci_is_le_connection(conn) || 8189 (conn->state == SEND_CREATE_CONNECTION) || 8190 (conn->state == SENT_CREATE_CONNECTION)) { 8191 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 8192 log_error("gap_connect: classic connection or connect is already being created"); 8193 return GATT_CLIENT_IN_WRONG_STATE; 8194 } 8195 8196 // check if connection was just disconnected 8197 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8198 log_info("gap_connect: send create connection (again)"); 8199 conn->state = SEND_CREATE_CONNECTION; 8200 hci_run(); 8201 return ERROR_CODE_SUCCESS; 8202 } 8203 8204 log_info("gap_connect: context exists with state %u", conn->state); 8205 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 8206 hci_run(); 8207 return ERROR_CODE_SUCCESS; 8208 } 8209 8210 // @assumption: only a single outgoing LE Connection exists 8211 static hci_connection_t * gap_get_outgoing_connection(void){ 8212 btstack_linked_item_t *it; 8213 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8214 hci_connection_t * conn = (hci_connection_t *) it; 8215 if (!hci_is_le_connection(conn)) continue; 8216 switch (conn->state){ 8217 case SEND_CREATE_CONNECTION: 8218 case SENT_CREATE_CONNECTION: 8219 return conn; 8220 default: 8221 break; 8222 }; 8223 } 8224 return NULL; 8225 } 8226 8227 uint8_t gap_connect_cancel(void){ 8228 hci_connection_t * conn; 8229 switch (hci_stack->le_connecting_request){ 8230 case LE_CONNECTING_IDLE: 8231 break; 8232 case LE_CONNECTING_WHITELIST: 8233 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8234 hci_run(); 8235 break; 8236 case LE_CONNECTING_DIRECT: 8237 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8238 conn = gap_get_outgoing_connection(); 8239 if (conn == NULL){ 8240 hci_run(); 8241 } else { 8242 switch (conn->state){ 8243 case SEND_CREATE_CONNECTION: 8244 // skip sending create connection and emit event instead 8245 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8246 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8247 btstack_memory_hci_connection_free( conn ); 8248 break; 8249 case SENT_CREATE_CONNECTION: 8250 // let hci_run_general_gap_le cancel outgoing connection 8251 hci_run(); 8252 break; 8253 default: 8254 break; 8255 } 8256 } 8257 break; 8258 default: 8259 btstack_unreachable(); 8260 break; 8261 } 8262 return ERROR_CODE_SUCCESS; 8263 } 8264 8265 /** 8266 * @brief Set connection parameters for outgoing connections 8267 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8268 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8269 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8270 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8271 * @param conn_latency, default: 4 8272 * @param supervision_timeout (unit: 10ms), default: 720 ms 8273 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8274 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8275 */ 8276 8277 void gap_set_connection_phys(uint8_t phys){ 8278 // LE Coded, LE 1M, LE 2M PHY 8279 hci_stack->le_connection_phys = phys & 7; 8280 } 8281 8282 #endif 8283 8284 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8285 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8286 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8287 hci_stack->le_connection_scan_interval = conn_scan_interval; 8288 hci_stack->le_connection_scan_window = conn_scan_window; 8289 hci_stack->le_connection_interval_min = conn_interval_min; 8290 hci_stack->le_connection_interval_max = conn_interval_max; 8291 hci_stack->le_connection_latency = conn_latency; 8292 hci_stack->le_supervision_timeout = supervision_timeout; 8293 hci_stack->le_minimum_ce_length = min_ce_length; 8294 hci_stack->le_maximum_ce_length = max_ce_length; 8295 } 8296 8297 /** 8298 * @brief Updates the connection parameters for a given LE connection 8299 * @param handle 8300 * @param conn_interval_min (unit: 1.25ms) 8301 * @param conn_interval_max (unit: 1.25ms) 8302 * @param conn_latency 8303 * @param supervision_timeout (unit: 10ms) 8304 * @return 0 if ok 8305 */ 8306 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8307 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8308 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8309 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8310 connection->le_conn_interval_min = conn_interval_min; 8311 connection->le_conn_interval_max = conn_interval_max; 8312 connection->le_conn_latency = conn_latency; 8313 connection->le_supervision_timeout = supervision_timeout; 8314 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8315 hci_run(); 8316 return 0; 8317 } 8318 8319 /** 8320 * @brief Request an update of the connection parameter for a given LE connection 8321 * @param handle 8322 * @param conn_interval_min (unit: 1.25ms) 8323 * @param conn_interval_max (unit: 1.25ms) 8324 * @param conn_latency 8325 * @param supervision_timeout (unit: 10ms) 8326 * @return 0 if ok 8327 */ 8328 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8329 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8330 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8331 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8332 connection->le_conn_interval_min = conn_interval_min; 8333 connection->le_conn_interval_max = conn_interval_max; 8334 connection->le_conn_latency = conn_latency; 8335 connection->le_supervision_timeout = supervision_timeout; 8336 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8337 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8338 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8339 return 0; 8340 } 8341 8342 #ifdef ENABLE_LE_PERIPHERAL 8343 8344 /** 8345 * @brief Set Advertisement Data 8346 * @param advertising_data_length 8347 * @param advertising_data (max 31 octets) 8348 * @note data is not copied, pointer has to stay valid 8349 */ 8350 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8351 hci_stack->le_advertisements_data_len = advertising_data_length; 8352 hci_stack->le_advertisements_data = advertising_data; 8353 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8354 hci_run(); 8355 } 8356 8357 /** 8358 * @brief Set Scan Response Data 8359 * @param advertising_data_length 8360 * @param advertising_data (max 31 octets) 8361 * @note data is not copied, pointer has to stay valid 8362 */ 8363 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8364 hci_stack->le_scan_response_data_len = scan_response_data_length; 8365 hci_stack->le_scan_response_data = scan_response_data; 8366 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8367 hci_run(); 8368 } 8369 8370 /** 8371 * @brief Set Advertisement Parameters 8372 * @param adv_int_min 8373 * @param adv_int_max 8374 * @param adv_type 8375 * @param direct_address_type 8376 * @param direct_address 8377 * @param channel_map 8378 * @param filter_policy 8379 * 8380 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8381 */ 8382 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8383 uint8_t direct_address_typ, bd_addr_t direct_address, 8384 uint8_t channel_map, uint8_t filter_policy) { 8385 8386 hci_stack->le_advertisements_interval_min = adv_int_min; 8387 hci_stack->le_advertisements_interval_max = adv_int_max; 8388 hci_stack->le_advertisements_type = adv_type; 8389 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8390 hci_stack->le_advertisements_channel_map = channel_map; 8391 hci_stack->le_advertisements_filter_policy = filter_policy; 8392 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8393 6); 8394 8395 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8396 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8397 hci_run(); 8398 } 8399 8400 /** 8401 * @brief Enable/Disable Advertisements 8402 * @param enabled 8403 */ 8404 void gap_advertisements_enable(int enabled){ 8405 if (enabled == 0){ 8406 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8407 } else { 8408 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8409 } 8410 hci_update_advertisements_enabled_for_current_roles(); 8411 hci_run(); 8412 } 8413 8414 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8415 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8416 btstack_linked_list_iterator_t it; 8417 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8418 while (btstack_linked_list_iterator_has_next(&it)){ 8419 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8420 if ( item->advertising_handle == advertising_handle ) { 8421 return item; 8422 } 8423 } 8424 return NULL; 8425 } 8426 8427 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8428 // find free advertisement handle 8429 uint8_t advertisement_handle; 8430 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8431 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8432 } 8433 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8434 // clear 8435 memset(storage, 0, sizeof(le_advertising_set_t)); 8436 // copy params 8437 storage->advertising_handle = advertisement_handle; 8438 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8439 // add to list 8440 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8441 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8442 *out_advertising_handle = advertisement_handle; 8443 // set tasks and start 8444 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8445 hci_run(); 8446 return ERROR_CODE_SUCCESS; 8447 } 8448 8449 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8450 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8451 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8452 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8453 // set tasks and start 8454 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8455 hci_run(); 8456 return ERROR_CODE_SUCCESS; 8457 } 8458 8459 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8460 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8461 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8462 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8463 return ERROR_CODE_SUCCESS; 8464 } 8465 8466 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8467 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8468 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8469 memcpy(advertising_set->random_address, random_address, 6); 8470 // set tasks and start 8471 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8472 hci_run(); 8473 return ERROR_CODE_SUCCESS; 8474 } 8475 8476 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8477 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8478 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8479 advertising_set->adv_data = advertising_data; 8480 advertising_set->adv_data_len = advertising_data_length; 8481 // set tasks and start 8482 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8483 hci_run(); 8484 return ERROR_CODE_SUCCESS; 8485 } 8486 8487 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){ 8488 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8489 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8490 advertising_set->scan_data = scan_response_data; 8491 advertising_set->scan_data_len = scan_response_data_length; 8492 // set tasks and start 8493 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8494 hci_run(); 8495 return ERROR_CODE_SUCCESS; 8496 } 8497 8498 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8499 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8500 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8501 advertising_set->enable_timeout = timeout; 8502 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8503 // set tasks and start 8504 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8505 hci_run(); 8506 return ERROR_CODE_SUCCESS; 8507 } 8508 8509 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8510 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8511 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8512 // set tasks and start 8513 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8514 hci_run(); 8515 return ERROR_CODE_SUCCESS; 8516 } 8517 8518 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8519 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8520 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8521 // set tasks and start 8522 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8523 hci_run(); 8524 return ERROR_CODE_SUCCESS; 8525 } 8526 8527 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8528 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8529 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8530 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8531 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8532 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8533 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8534 // set tasks and start 8535 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8536 hci_run(); 8537 return ERROR_CODE_SUCCESS; 8538 } 8539 8540 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8541 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8542 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8543 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8544 return ERROR_CODE_SUCCESS; 8545 } 8546 8547 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8548 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8549 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8550 advertising_set->periodic_data = periodic_data; 8551 advertising_set->periodic_data_len = periodic_data_length; 8552 // set tasks and start 8553 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8554 hci_run(); 8555 return ERROR_CODE_SUCCESS; 8556 } 8557 8558 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8559 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8560 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8561 // set tasks and start 8562 advertising_set->periodic_include_adi = include_adi; 8563 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8564 hci_run(); 8565 return ERROR_CODE_SUCCESS; 8566 } 8567 8568 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8569 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8570 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8571 // set tasks and start 8572 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8573 hci_run(); 8574 return ERROR_CODE_SUCCESS; 8575 } 8576 8577 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8578 hci_stack->le_past_mode = mode; 8579 hci_stack->le_past_skip = skip; 8580 hci_stack->le_past_sync_timeout = sync_timeout; 8581 hci_stack->le_past_cte_type = cte_type; 8582 hci_stack->le_past_set_default_params = true; 8583 hci_run(); 8584 return ERROR_CODE_SUCCESS; 8585 } 8586 8587 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8588 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8589 if (hci_connection == NULL){ 8590 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8591 } 8592 hci_connection->le_past_sync_handle = sync_handle; 8593 hci_connection->le_past_service_data = service_data; 8594 hci_run(); 8595 return ERROR_CODE_SUCCESS; 8596 } 8597 8598 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8599 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8600 if (hci_connection == NULL){ 8601 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8602 } 8603 hci_connection->le_past_advertising_handle = advertising_handle; 8604 hci_connection->le_past_service_data = service_data; 8605 hci_run(); 8606 return ERROR_CODE_SUCCESS; 8607 } 8608 8609 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8610 8611 #endif 8612 8613 #endif 8614 8615 void hci_le_set_own_address_type(uint8_t own_address_type){ 8616 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8617 if (own_address_type == hci_stack->le_own_addr_type) return; 8618 hci_stack->le_own_addr_type = own_address_type; 8619 8620 #ifdef ENABLE_LE_PERIPHERAL 8621 // update advertisement parameters, too 8622 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8623 hci_run(); 8624 #endif 8625 #ifdef ENABLE_LE_CENTRAL 8626 // note: we don't update scan parameters or modify ongoing connection attempts 8627 #endif 8628 } 8629 8630 void hci_le_random_address_set(const bd_addr_t random_address){ 8631 memcpy(hci_stack->le_random_address, random_address, 6); 8632 hci_stack->le_random_address_set = true; 8633 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8634 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8635 if (hci_extended_advertising_supported()){ 8636 // force advertising set creation for LE Set Advertising Set Random Address 8637 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8638 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8639 } 8640 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8641 } 8642 #endif 8643 hci_run(); 8644 } 8645 8646 #endif 8647 8648 uint8_t gap_disconnect(hci_con_handle_t handle){ 8649 hci_connection_t * conn = hci_connection_for_handle(handle); 8650 if (!conn){ 8651 hci_emit_disconnection_complete(handle, 0); 8652 return 0; 8653 } 8654 // ignore if already disconnected 8655 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8656 return 0; 8657 } 8658 conn->state = SEND_DISCONNECT; 8659 hci_run(); 8660 return 0; 8661 } 8662 8663 int gap_read_rssi(hci_con_handle_t con_handle){ 8664 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8665 if (hci_connection == NULL) return 0; 8666 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8667 hci_run(); 8668 return 1; 8669 } 8670 8671 /** 8672 * @brief Get connection type 8673 * @param con_handle 8674 * @result connection_type 8675 */ 8676 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8677 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8678 if (!conn) return GAP_CONNECTION_INVALID; 8679 switch (conn->address_type){ 8680 case BD_ADDR_TYPE_LE_PUBLIC: 8681 case BD_ADDR_TYPE_LE_RANDOM: 8682 return GAP_CONNECTION_LE; 8683 case BD_ADDR_TYPE_SCO: 8684 return GAP_CONNECTION_SCO; 8685 case BD_ADDR_TYPE_ACL: 8686 return GAP_CONNECTION_ACL; 8687 default: 8688 return GAP_CONNECTION_INVALID; 8689 } 8690 } 8691 8692 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8693 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8694 if (!conn) return HCI_ROLE_INVALID; 8695 return (hci_role_t) conn->role; 8696 } 8697 8698 8699 #ifdef ENABLE_CLASSIC 8700 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8701 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8702 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8703 conn->request_role = role; 8704 hci_run(); 8705 return ERROR_CODE_SUCCESS; 8706 } 8707 #endif 8708 8709 #ifdef ENABLE_BLE 8710 8711 uint8_t gap_le_set_phy(hci_con_handle_t con_handle, uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint16_t phy_options){ 8712 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8713 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8714 8715 conn->le_phy_update_all_phys = all_phys; 8716 conn->le_phy_update_tx_phys = tx_phys; 8717 conn->le_phy_update_rx_phys = rx_phys; 8718 conn->le_phy_update_phy_options = (uint8_t) phy_options; 8719 8720 hci_run(); 8721 8722 return 0; 8723 } 8724 8725 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8726 // check if already in list 8727 btstack_linked_list_iterator_t it; 8728 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8729 while (btstack_linked_list_iterator_has_next(&it)) { 8730 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8731 if (entry->address_type != address_type) { 8732 continue; 8733 } 8734 if (memcmp(entry->address, address, 6) != 0) { 8735 continue; 8736 } 8737 8738 // if already on controller: 8739 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 8740 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 8741 // drop remove request 8742 entry->state = LE_WHITELIST_ON_CONTROLLER; 8743 return ERROR_CODE_SUCCESS; 8744 } else { 8745 // disallow as already on controller 8746 return ERROR_CODE_COMMAND_DISALLOWED; 8747 } 8748 } 8749 8750 // assume scheduled to add 8751 return ERROR_CODE_COMMAND_DISALLOWED; 8752 } 8753 8754 // alloc and add to list 8755 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8756 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8757 entry->address_type = address_type; 8758 (void)memcpy(entry->address, address, 6); 8759 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8760 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8761 return ERROR_CODE_SUCCESS; 8762 } 8763 8764 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8765 btstack_linked_list_iterator_t it; 8766 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8767 while (btstack_linked_list_iterator_has_next(&it)){ 8768 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8769 if (entry->address_type != address_type) { 8770 continue; 8771 } 8772 if (memcmp(entry->address, address, 6) != 0) { 8773 continue; 8774 } 8775 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8776 // remove from controller if already present 8777 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8778 } else { 8779 // directly remove entry from whitelist 8780 btstack_linked_list_iterator_remove(&it); 8781 btstack_memory_whitelist_entry_free(entry); 8782 } 8783 return ERROR_CODE_SUCCESS; 8784 } 8785 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8786 } 8787 8788 static void hci_whitelist_clear(void){ 8789 btstack_linked_list_iterator_t it; 8790 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8791 while (btstack_linked_list_iterator_has_next(&it)){ 8792 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8793 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8794 // remove from controller if already present 8795 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8796 continue; 8797 } 8798 // directly remove entry from whitelist 8799 btstack_linked_list_iterator_remove(&it); 8800 btstack_memory_whitelist_entry_free(entry); 8801 } 8802 } 8803 8804 /** 8805 * @brief Clear Whitelist 8806 * @return 0 if ok 8807 */ 8808 uint8_t gap_whitelist_clear(void){ 8809 hci_whitelist_clear(); 8810 hci_run(); 8811 return ERROR_CODE_SUCCESS; 8812 } 8813 8814 /** 8815 * @brief Add Device to Whitelist 8816 * @param address_typ 8817 * @param address 8818 * @return 0 if ok 8819 */ 8820 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8821 uint8_t status = hci_whitelist_add(address_type, address); 8822 if (status){ 8823 return status; 8824 } 8825 hci_run(); 8826 return ERROR_CODE_SUCCESS; 8827 } 8828 8829 /** 8830 * @brief Remove Device from Whitelist 8831 * @param address_typ 8832 * @param address 8833 * @return 0 if ok 8834 */ 8835 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8836 uint8_t status = hci_whitelist_remove(address_type, address); 8837 if (status){ 8838 return status; 8839 } 8840 hci_run(); 8841 return ERROR_CODE_SUCCESS; 8842 } 8843 8844 #ifdef ENABLE_LE_CENTRAL 8845 /** 8846 * @brief Connect with Whitelist 8847 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8848 * @return - if ok 8849 */ 8850 uint8_t gap_connect_with_whitelist(void){ 8851 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8852 return ERROR_CODE_COMMAND_DISALLOWED; 8853 } 8854 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8855 hci_run(); 8856 return ERROR_CODE_SUCCESS; 8857 } 8858 8859 /** 8860 * @brief Auto Connection Establishment - Start Connecting to device 8861 * @param address_typ 8862 * @param address 8863 * @return 0 if ok 8864 */ 8865 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8866 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8867 return ERROR_CODE_COMMAND_DISALLOWED; 8868 } 8869 8870 uint8_t status = hci_whitelist_add(address_type, address); 8871 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8872 return status; 8873 } 8874 8875 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8876 8877 hci_run(); 8878 return ERROR_CODE_SUCCESS; 8879 } 8880 8881 /** 8882 * @brief Auto Connection Establishment - Stop Connecting to device 8883 * @param address_typ 8884 * @param address 8885 * @return 0 if ok 8886 */ 8887 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8888 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8889 return ERROR_CODE_COMMAND_DISALLOWED; 8890 } 8891 8892 hci_whitelist_remove(address_type, address); 8893 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8894 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8895 } 8896 hci_run(); 8897 return 0; 8898 } 8899 8900 /** 8901 * @brief Auto Connection Establishment - Stop everything 8902 * @note Convenience function to stop all active auto connection attempts 8903 */ 8904 uint8_t gap_auto_connection_stop_all(void){ 8905 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8906 return ERROR_CODE_COMMAND_DISALLOWED; 8907 } 8908 hci_whitelist_clear(); 8909 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8910 hci_run(); 8911 return ERROR_CODE_SUCCESS; 8912 } 8913 8914 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8915 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8916 if (!conn) return 0; 8917 return conn->le_connection_interval; 8918 } 8919 #endif 8920 #endif 8921 8922 #ifdef ENABLE_CLASSIC 8923 /** 8924 * @brief Set Extended Inquiry Response data 8925 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8926 * @note has to be done before stack starts up 8927 */ 8928 void gap_set_extended_inquiry_response(const uint8_t * data){ 8929 hci_stack->eir_data = data; 8930 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8931 hci_run(); 8932 } 8933 8934 /** 8935 * @brief Start GAP Classic Inquiry 8936 * @param duration in 1.28s units 8937 * @return 0 if ok 8938 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8939 */ 8940 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8941 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8942 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8943 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8944 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8945 } 8946 hci_stack->inquiry_state = duration_in_1280ms_units; 8947 hci_stack->inquiry_max_period_length = 0; 8948 hci_stack->inquiry_min_period_length = 0; 8949 hci_run(); 8950 return 0; 8951 } 8952 8953 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8954 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8955 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8956 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8957 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8958 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8959 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8960 8961 hci_stack->inquiry_state = duration; 8962 hci_stack->inquiry_max_period_length = max_period_length; 8963 hci_stack->inquiry_min_period_length = min_period_length; 8964 hci_run(); 8965 return 0; 8966 } 8967 8968 /** 8969 * @brief Stop GAP Classic Inquiry 8970 * @return 0 if ok 8971 */ 8972 int gap_inquiry_stop(void){ 8973 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8974 // emit inquiry complete event, before it even started 8975 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8976 hci_emit_event(event, sizeof(event), 1); 8977 return 0; 8978 } 8979 switch (hci_stack->inquiry_state){ 8980 case GAP_INQUIRY_STATE_ACTIVE: 8981 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8982 hci_run(); 8983 return ERROR_CODE_SUCCESS; 8984 case GAP_INQUIRY_STATE_PERIODIC: 8985 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8986 hci_run(); 8987 return ERROR_CODE_SUCCESS; 8988 default: 8989 return ERROR_CODE_COMMAND_DISALLOWED; 8990 } 8991 } 8992 8993 void gap_inquiry_set_lap(uint32_t lap){ 8994 hci_stack->inquiry_lap = lap; 8995 } 8996 8997 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8998 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8999 hci_stack->inquiry_scan_window = inquiry_scan_window; 9000 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9001 hci_run(); 9002 } 9003 9004 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9005 { 9006 hci_stack->inquiry_tx_power_level = tx_power; 9007 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9008 hci_run(); 9009 } 9010 9011 9012 /** 9013 * @brief Remote Name Request 9014 * @param addr 9015 * @param page_scan_repetition_mode 9016 * @param clock_offset only used when bit 15 is set 9017 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9018 */ 9019 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9020 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9021 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9022 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9023 hci_stack->remote_name_clock_offset = clock_offset; 9024 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9025 hci_run(); 9026 return 0; 9027 } 9028 9029 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9030 hci_stack->gap_pairing_state = state; 9031 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9032 hci_run(); 9033 return 0; 9034 } 9035 9036 /** 9037 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9038 * @param addr 9039 * @param pin_data 9040 * @param pin_len 9041 * @return 0 if ok 9042 */ 9043 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9044 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9045 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9046 hci_stack->gap_pairing_pin_len = pin_len; 9047 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9048 } 9049 9050 /** 9051 * @brief Legacy Pairing Pin Code Response 9052 * @param addr 9053 * @param pin 9054 * @return 0 if ok 9055 */ 9056 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9057 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9058 } 9059 9060 /** 9061 * @brief Abort Legacy Pairing 9062 * @param addr 9063 * @param pin 9064 * @return 0 if ok 9065 */ 9066 int gap_pin_code_negative(bd_addr_t addr){ 9067 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9068 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9069 } 9070 9071 /** 9072 * @brief SSP Passkey Response 9073 * @param addr 9074 * @param passkey 9075 * @return 0 if ok 9076 */ 9077 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9078 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9079 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9080 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9081 } 9082 9083 /** 9084 * @brief Abort SSP Passkey Entry/Pairing 9085 * @param addr 9086 * @param pin 9087 * @return 0 if ok 9088 */ 9089 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9090 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9091 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9092 } 9093 9094 /** 9095 * @brief Accept SSP Numeric Comparison 9096 * @param addr 9097 * @param passkey 9098 * @return 0 if ok 9099 */ 9100 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9101 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9102 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9103 } 9104 9105 /** 9106 * @brief Abort SSP Numeric Comparison/Pairing 9107 * @param addr 9108 * @param pin 9109 * @return 0 if ok 9110 */ 9111 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9112 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9113 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9114 } 9115 9116 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9117 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9118 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9119 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9120 connectionSetAuthenticationFlags(conn, flag); 9121 hci_run(); 9122 return ERROR_CODE_SUCCESS; 9123 } 9124 #endif 9125 9126 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9127 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9128 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9129 } 9130 9131 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9132 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9133 } 9134 #endif 9135 9136 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9137 /** 9138 * @brief Report Remote OOB Data 9139 * @param bd_addr 9140 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9141 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9142 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9143 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9144 */ 9145 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){ 9146 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9147 if (connection == NULL) { 9148 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9149 } 9150 connection->classic_oob_c_192 = c_192; 9151 connection->classic_oob_r_192 = r_192; 9152 9153 // ignore P-256 if not supported by us 9154 if (hci_stack->secure_connections_active){ 9155 connection->classic_oob_c_256 = c_256; 9156 connection->classic_oob_r_256 = r_256; 9157 } 9158 9159 return ERROR_CODE_SUCCESS; 9160 } 9161 /** 9162 * @brief Generate new OOB data 9163 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9164 */ 9165 void gap_ssp_generate_oob_data(void){ 9166 hci_stack->classic_read_local_oob_data = true; 9167 hci_run(); 9168 } 9169 9170 #endif 9171 9172 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9173 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9174 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9175 if (connection == NULL) { 9176 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9177 } 9178 9179 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9180 connection->link_key_type = type; 9181 9182 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9183 } 9184 9185 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9186 /** 9187 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9188 * @param inquiry_mode see bluetooth_defines.h 9189 */ 9190 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9191 hci_stack->inquiry_mode = inquiry_mode; 9192 } 9193 9194 /** 9195 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9196 */ 9197 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9198 hci_stack->sco_voice_setting = voice_setting; 9199 } 9200 9201 /** 9202 * @brief Get SCO Voice Setting 9203 * @return current voice setting 9204 */ 9205 uint16_t hci_get_sco_voice_setting(void){ 9206 return hci_stack->sco_voice_setting; 9207 } 9208 9209 static int hci_have_usb_transport(void){ 9210 if (!hci_stack->hci_transport) return 0; 9211 const char * transport_name = hci_stack->hci_transport->name; 9212 if (!transport_name) return 0; 9213 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9214 } 9215 9216 /** @brief Get SCO packet length for current SCO Voice setting 9217 * @note Using SCO packets of the exact length is required for USB transfer 9218 * @return Length of SCO packets in bytes (not audio frames) 9219 */ 9220 uint16_t hci_get_sco_packet_length(void){ 9221 uint16_t sco_packet_length = 0; 9222 9223 #ifdef ENABLE_SCO_OVER_HCI 9224 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9225 int multiplier; 9226 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9227 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9228 multiplier = 2; 9229 } else { 9230 multiplier = 1; 9231 } 9232 9233 9234 if (hci_have_usb_transport()){ 9235 // see Core Spec for H2 USB Transfer. 9236 // 3 byte SCO header + 24 bytes per connection 9237 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 9238 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 9239 } else { 9240 // 3 byte SCO header + SCO packet size over the air (60 bytes) 9241 sco_packet_length = 3 + 60 * multiplier; 9242 // assert that it still fits inside an SCO buffer 9243 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9244 sco_packet_length = 3 + 60; 9245 } 9246 } 9247 #endif 9248 9249 #ifdef HAVE_SCO_TRANSPORT 9250 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9251 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 9252 sco_packet_length = 3 + 60 * multiplier; 9253 #endif 9254 return sco_packet_length; 9255 } 9256 9257 /** 9258 * @brief Sets the master/slave policy 9259 * @param policy (0: attempt to become master, 1: let connecting device decide) 9260 */ 9261 void hci_set_master_slave_policy(uint8_t policy){ 9262 hci_stack->master_slave_policy = policy; 9263 } 9264 9265 #endif 9266 9267 HCI_STATE hci_get_state(void){ 9268 return hci_stack->state; 9269 } 9270 9271 #ifdef ENABLE_CLASSIC 9272 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9273 hci_stack->gap_classic_accept_callback = accept_callback; 9274 } 9275 #endif 9276 9277 /** 9278 * @brief Set callback for Bluetooth Hardware Error 9279 */ 9280 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9281 hci_stack->hardware_error_callback = fn; 9282 } 9283 9284 void hci_disconnect_all(void){ 9285 btstack_linked_list_iterator_t it; 9286 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9287 while (btstack_linked_list_iterator_has_next(&it)){ 9288 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9289 if (con->state == SENT_DISCONNECT) continue; 9290 con->state = SEND_DISCONNECT; 9291 } 9292 hci_run(); 9293 } 9294 9295 uint16_t hci_get_manufacturer(void){ 9296 return hci_stack->manufacturer; 9297 } 9298 9299 #ifdef ENABLE_BLE 9300 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9301 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9302 if (!hci_con) return NULL; 9303 return &hci_con->sm_connection; 9304 } 9305 9306 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9307 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9308 #endif 9309 9310 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9311 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9312 if (hci_connection == NULL) return 0; 9313 if (hci_is_le_connection(hci_connection)){ 9314 #ifdef ENABLE_BLE 9315 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9316 if (sm_conn->sm_connection_encrypted) { 9317 return sm_conn->sm_actual_encryption_key_size; 9318 } 9319 #endif 9320 } else { 9321 #ifdef ENABLE_CLASSIC 9322 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9323 return hci_connection->encryption_key_size; 9324 } 9325 #endif 9326 } 9327 return 0; 9328 } 9329 9330 bool gap_authenticated(hci_con_handle_t con_handle){ 9331 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9332 if (hci_connection == NULL) return false; 9333 9334 switch (hci_connection->address_type){ 9335 #ifdef ENABLE_BLE 9336 case BD_ADDR_TYPE_LE_PUBLIC: 9337 case BD_ADDR_TYPE_LE_RANDOM: 9338 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9339 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9340 #endif 9341 #ifdef ENABLE_CLASSIC 9342 case BD_ADDR_TYPE_SCO: 9343 case BD_ADDR_TYPE_ACL: 9344 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9345 #endif 9346 default: 9347 return false; 9348 } 9349 } 9350 9351 bool gap_secure_connection(hci_con_handle_t con_handle){ 9352 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9353 if (hci_connection == NULL) return 0; 9354 9355 switch (hci_connection->address_type){ 9356 #ifdef ENABLE_BLE 9357 case BD_ADDR_TYPE_LE_PUBLIC: 9358 case BD_ADDR_TYPE_LE_RANDOM: 9359 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9360 return hci_connection->sm_connection.sm_connection_sc != 0; 9361 #endif 9362 #ifdef ENABLE_CLASSIC 9363 case BD_ADDR_TYPE_SCO: 9364 case BD_ADDR_TYPE_ACL: 9365 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9366 #endif 9367 default: 9368 return false; 9369 } 9370 } 9371 9372 bool gap_bonded(hci_con_handle_t con_handle){ 9373 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9374 if (hci_connection == NULL) return 0; 9375 9376 #ifdef ENABLE_CLASSIC 9377 link_key_t link_key; 9378 link_key_type_t link_key_type; 9379 #endif 9380 switch (hci_connection->address_type){ 9381 #ifdef ENABLE_BLE 9382 case BD_ADDR_TYPE_LE_PUBLIC: 9383 case BD_ADDR_TYPE_LE_RANDOM: 9384 return hci_connection->sm_connection.sm_le_db_index >= 0; 9385 #endif 9386 #ifdef ENABLE_CLASSIC 9387 case BD_ADDR_TYPE_SCO: 9388 case BD_ADDR_TYPE_ACL: 9389 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9390 #endif 9391 default: 9392 return false; 9393 } 9394 } 9395 9396 #ifdef ENABLE_BLE 9397 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9398 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9399 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9400 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9401 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9402 return sm_conn->sm_connection_authorization_state; 9403 } 9404 #endif 9405 9406 #ifdef ENABLE_CLASSIC 9407 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){ 9408 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9409 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9410 conn->sniff_min_interval = sniff_min_interval; 9411 conn->sniff_max_interval = sniff_max_interval; 9412 conn->sniff_attempt = sniff_attempt; 9413 conn->sniff_timeout = sniff_timeout; 9414 hci_run(); 9415 return 0; 9416 } 9417 9418 /** 9419 * @brief Exit Sniff mode 9420 * @param con_handle 9421 @ @return 0 if ok 9422 */ 9423 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9424 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9425 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9426 conn->sniff_min_interval = 0xffff; 9427 hci_run(); 9428 return 0; 9429 } 9430 9431 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){ 9432 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9433 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9434 conn->sniff_subrating_max_latency = max_latency; 9435 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9436 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9437 hci_run(); 9438 return ERROR_CODE_SUCCESS; 9439 } 9440 9441 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){ 9442 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9443 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9444 conn->qos_service_type = service_type; 9445 conn->qos_token_rate = token_rate; 9446 conn->qos_peak_bandwidth = peak_bandwidth; 9447 conn->qos_latency = latency; 9448 conn->qos_delay_variation = delay_variation; 9449 hci_run(); 9450 return ERROR_CODE_SUCCESS; 9451 } 9452 9453 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9454 hci_stack->new_page_scan_interval = page_scan_interval; 9455 hci_stack->new_page_scan_window = page_scan_window; 9456 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9457 hci_run(); 9458 } 9459 9460 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9461 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9462 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9463 hci_run(); 9464 } 9465 9466 void gap_set_page_timeout(uint16_t page_timeout){ 9467 hci_stack->page_timeout = page_timeout; 9468 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9469 hci_run(); 9470 } 9471 9472 #endif 9473 9474 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9475 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9476 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9477 if (le_device_db_index >= le_device_db_max_count()) return; 9478 uint8_t offset = le_device_db_index >> 3; 9479 uint8_t mask = 1 << (le_device_db_index & 7); 9480 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9481 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9482 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9483 // note: go back to remove entries, otherwise, a remove + add will skip the add 9484 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9485 } 9486 } 9487 9488 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9489 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9490 if (le_device_db_index >= le_device_db_max_count()) return; 9491 uint8_t offset = le_device_db_index >> 3; 9492 uint8_t mask = 1 << (le_device_db_index & 7); 9493 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9494 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9495 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9496 } 9497 } 9498 9499 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9500 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9501 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9502 } 9503 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9504 // restart le resolving list update 9505 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9506 } 9507 return ERROR_CODE_SUCCESS; 9508 } 9509 9510 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9511 hci_stack->le_privacy_mode = privacy_mode; 9512 } 9513 #endif 9514 9515 #ifdef ENABLE_BLE 9516 #ifdef ENABLE_LE_CENTRAL 9517 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9518 9519 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9520 // check if already in list 9521 btstack_linked_list_iterator_t it; 9522 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9523 while (btstack_linked_list_iterator_has_next(&it)) { 9524 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9525 if (entry->sid != advertising_sid) { 9526 continue; 9527 } 9528 if (entry->address_type != address_type) { 9529 continue; 9530 } 9531 if (memcmp(entry->address, address, 6) != 0) { 9532 continue; 9533 } 9534 // disallow if already scheduled to add 9535 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9536 return ERROR_CODE_COMMAND_DISALLOWED; 9537 } 9538 // still on controller, but scheduled to remove -> re-add 9539 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9540 return ERROR_CODE_SUCCESS; 9541 } 9542 // alloc and add to list 9543 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9544 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9545 entry->sid = advertising_sid; 9546 entry->address_type = address_type; 9547 (void)memcpy(entry->address, address, 6); 9548 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9549 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9550 return ERROR_CODE_SUCCESS; 9551 } 9552 9553 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9554 btstack_linked_list_iterator_t it; 9555 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9556 while (btstack_linked_list_iterator_has_next(&it)){ 9557 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9558 if (entry->sid != advertising_sid) { 9559 continue; 9560 } 9561 if (entry->address_type != address_type) { 9562 continue; 9563 } 9564 if (memcmp(entry->address, address, 6) != 0) { 9565 continue; 9566 } 9567 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9568 // remove from controller if already present 9569 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9570 } else { 9571 // directly remove entry from whitelist 9572 btstack_linked_list_iterator_remove(&it); 9573 btstack_memory_periodic_advertiser_list_entry_free(entry); 9574 } 9575 return ERROR_CODE_SUCCESS; 9576 } 9577 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9578 } 9579 9580 static void hci_periodic_advertiser_list_clear(void){ 9581 btstack_linked_list_iterator_t it; 9582 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9583 while (btstack_linked_list_iterator_has_next(&it)){ 9584 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9585 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9586 // remove from controller if already present 9587 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9588 continue; 9589 } 9590 // directly remove entry from whitelist 9591 btstack_linked_list_iterator_remove(&it); 9592 btstack_memory_periodic_advertiser_list_entry_free(entry); 9593 } 9594 } 9595 9596 uint8_t gap_periodic_advertiser_list_clear(void){ 9597 hci_periodic_advertiser_list_clear(); 9598 hci_run(); 9599 return ERROR_CODE_SUCCESS; 9600 } 9601 9602 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9603 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9604 if (status){ 9605 return status; 9606 } 9607 hci_run(); 9608 return ERROR_CODE_SUCCESS; 9609 } 9610 9611 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9612 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9613 if (status){ 9614 return status; 9615 } 9616 hci_run(); 9617 return ERROR_CODE_SUCCESS; 9618 } 9619 9620 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9621 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9622 // abort if already active 9623 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9624 return ERROR_CODE_COMMAND_DISALLOWED; 9625 } 9626 // store request 9627 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9628 hci_stack->le_periodic_sync_options = options; 9629 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9630 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9631 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9632 hci_stack->le_periodic_sync_skip = skip; 9633 hci_stack->le_periodic_sync_timeout = sync_timeout; 9634 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9635 9636 hci_run(); 9637 return ERROR_CODE_SUCCESS; 9638 } 9639 9640 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9641 // abort if not requested 9642 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9643 return ERROR_CODE_COMMAND_DISALLOWED; 9644 } 9645 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9646 hci_run(); 9647 return ERROR_CODE_SUCCESS; 9648 } 9649 9650 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9651 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9652 return ERROR_CODE_COMMAND_DISALLOWED; 9653 } 9654 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9655 hci_run(); 9656 return ERROR_CODE_SUCCESS; 9657 } 9658 9659 #endif 9660 #endif 9661 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9662 static hci_iso_stream_t * 9663 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9664 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9665 if (iso_stream != NULL){ 9666 iso_stream->iso_type = iso_type; 9667 iso_stream->state = state; 9668 iso_stream->group_id = group_id; 9669 iso_stream->stream_id = stream_id; 9670 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9671 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9672 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9673 } 9674 return iso_stream; 9675 } 9676 9677 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9678 btstack_linked_list_iterator_t it; 9679 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9680 while (btstack_linked_list_iterator_has_next(&it)){ 9681 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9682 if (iso_stream->cis_handle == con_handle ) { 9683 return iso_stream; 9684 } 9685 } 9686 return NULL; 9687 } 9688 9689 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9690 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9691 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9692 btstack_memory_hci_iso_stream_free(iso_stream); 9693 } 9694 9695 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9696 btstack_linked_list_iterator_t it; 9697 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9698 while (btstack_linked_list_iterator_has_next(&it)){ 9699 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9700 if ((iso_stream->group_id == group_id) && 9701 (iso_stream->iso_type == iso_type)){ 9702 btstack_linked_list_iterator_remove(&it); 9703 btstack_memory_hci_iso_stream_free(iso_stream); 9704 } 9705 } 9706 } 9707 9708 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9709 btstack_linked_list_iterator_t it; 9710 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9711 while (btstack_linked_list_iterator_has_next(&it)){ 9712 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9713 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9714 (iso_stream->group_id == group_id)){ 9715 btstack_linked_list_iterator_remove(&it); 9716 btstack_memory_hci_iso_stream_free(iso_stream); 9717 } 9718 } 9719 } 9720 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9721 btstack_linked_list_iterator_t it; 9722 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9723 while (btstack_linked_list_iterator_has_next(&it)){ 9724 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9725 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9726 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9727 } 9728 } 9729 } 9730 9731 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9732 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9733 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9734 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9735 return (sdu_len_offset + 2 + sdu_len) == size; 9736 } 9737 9738 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9739 if (hci_stack->iso_packet_handler == NULL) { 9740 return; 9741 } 9742 if (size < 4) { 9743 return; 9744 } 9745 9746 // parse header 9747 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9748 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9749 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9750 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9751 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9752 9753 // assert packet is complete 9754 if ((iso_data_len + 4u) != size){ 9755 return; 9756 } 9757 9758 if ((pb_flag & 0x01) == 0){ 9759 if (pb_flag == 0x02){ 9760 // The ISO_Data_Load field contains a header and a complete SDU. 9761 if (hci_iso_sdu_complete(packet, size)) { 9762 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9763 } 9764 } else { 9765 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9766 if (iso_stream == NULL){ 9767 return; 9768 } 9769 if (size > HCI_ISO_PAYLOAD_SIZE){ 9770 return; 9771 } 9772 memcpy(iso_stream->reassembly_buffer, packet, size); 9773 // fix pb_flag 9774 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9775 iso_stream->reassembly_pos = size; 9776 } 9777 } else { 9778 // iso_data_load contains continuation or last fragment of an SDU 9779 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9780 if (ts_flag != 0){ 9781 return; 9782 } 9783 // append fragment 9784 if (iso_stream == NULL){ 9785 return; 9786 } 9787 if (iso_stream->reassembly_pos == 0){ 9788 return; 9789 } 9790 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9791 // reset reassembly buffer 9792 iso_stream->reassembly_pos = 0; 9793 return; 9794 } 9795 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9796 iso_stream->reassembly_pos += iso_data_len; 9797 9798 // deliver if last fragment and SDU complete 9799 if (pb_flag == 0x03){ 9800 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9801 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9802 } 9803 iso_stream->reassembly_pos = 0; 9804 } 9805 } 9806 } 9807 9808 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9809 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9810 uint16_t pos = 0; 9811 event[pos++] = HCI_EVENT_META_GAP; 9812 event[pos++] = 4 + (2 * big->num_bis); 9813 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9814 event[pos++] = status; 9815 event[pos++] = big->big_handle; 9816 event[pos++] = big->num_bis; 9817 uint8_t i; 9818 for (i=0;i<big->num_bis;i++){ 9819 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9820 pos += 2; 9821 } 9822 hci_emit_event(event, pos, 0); 9823 } 9824 9825 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9826 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9827 uint16_t pos = 0; 9828 event[pos++] = HCI_EVENT_META_GAP; 9829 event[pos++] = 4 + (2 * cig->num_cis); 9830 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9831 event[pos++] = status; 9832 event[pos++] = cig->cig_id; 9833 event[pos++] = cig->num_cis; 9834 uint8_t i; 9835 for (i=0;i<cig->num_cis;i++){ 9836 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9837 pos += 2; 9838 } 9839 hci_emit_event(event, pos, 0); 9840 } 9841 9842 static void hci_emit_cis_created(uint8_t status, uint8_t cig_id, uint8_t cis_id, hci_con_handle_t cis_con_handle, 9843 hci_con_handle_t acl_con_handle) { 9844 uint8_t event [10]; 9845 uint16_t pos = 0; 9846 event[pos++] = HCI_EVENT_META_GAP; 9847 event[pos++] = 8; 9848 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9849 event[pos++] = status; 9850 event[pos++] = cig_id; 9851 event[pos++] = cis_id; 9852 little_endian_store_16(event, pos, cis_con_handle); 9853 pos += 2; 9854 little_endian_store_16(event, pos, acl_con_handle); 9855 pos += 2; 9856 hci_emit_event(event, pos, 0); 9857 } 9858 9859 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 9860 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 9861 // cache data before finalizing struct 9862 uint8_t cig_id = iso_stream->group_id; 9863 uint8_t cis_id = iso_stream->stream_id; 9864 hci_con_handle_t cis_handle = iso_stream->cis_handle; 9865 hci_con_handle_t acl_handle = iso_stream->acl_handle; 9866 if (status != ERROR_CODE_SUCCESS){ 9867 hci_iso_stream_finalize(iso_stream); 9868 } 9869 hci_emit_cis_created(status, cig_id, cis_id, cis_handle, acl_handle); 9870 } 9871 9872 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9873 uint8_t event [4]; 9874 uint16_t pos = 0; 9875 event[pos++] = HCI_EVENT_META_GAP; 9876 event[pos++] = 2; 9877 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9878 event[pos++] = big->big_handle; 9879 hci_emit_event(event, pos, 0); 9880 } 9881 9882 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9883 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9884 uint16_t pos = 0; 9885 event[pos++] = HCI_EVENT_META_GAP; 9886 event[pos++] = 4; 9887 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9888 event[pos++] = status; 9889 event[pos++] = big_sync->big_handle; 9890 event[pos++] = big_sync->num_bis; 9891 uint8_t i; 9892 for (i=0;i<big_sync->num_bis;i++){ 9893 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9894 pos += 2; 9895 } 9896 hci_emit_event(event, pos, 0); 9897 } 9898 9899 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9900 uint8_t event [4]; 9901 uint16_t pos = 0; 9902 event[pos++] = HCI_EVENT_META_GAP; 9903 event[pos++] = 2; 9904 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9905 event[pos++] = big_handle; 9906 hci_emit_event(event, pos, 0); 9907 } 9908 9909 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9910 uint8_t event[6]; 9911 uint16_t pos = 0; 9912 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9913 event[pos++] = sizeof(event) - 2; 9914 event[pos++] = big->big_handle; 9915 event[pos++] = bis_index; 9916 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9917 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9918 } 9919 9920 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9921 uint8_t event[4]; 9922 uint16_t pos = 0; 9923 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9924 event[pos++] = sizeof(event) - 2; 9925 little_endian_store_16(event, pos, cis_con_handle); 9926 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9927 } 9928 9929 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9930 btstack_linked_list_iterator_t it; 9931 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9932 while (btstack_linked_list_iterator_has_next(&it)){ 9933 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9934 if ( big->big_handle == big_handle ) { 9935 return big; 9936 } 9937 } 9938 return NULL; 9939 } 9940 9941 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9942 btstack_linked_list_iterator_t it; 9943 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9944 while (btstack_linked_list_iterator_has_next(&it)){ 9945 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9946 if ( big_sync->big_handle == big_handle ) { 9947 return big_sync; 9948 } 9949 } 9950 return NULL; 9951 } 9952 9953 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9954 hci_stack->iso_packets_to_queue = num_packets; 9955 } 9956 9957 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9958 btstack_linked_list_iterator_t it; 9959 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9960 while (btstack_linked_list_iterator_has_next(&it)){ 9961 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9962 if ( cig->cig_id == cig_id ) { 9963 return cig; 9964 } 9965 } 9966 return NULL; 9967 } 9968 9969 static void hci_iso_notify_can_send_now(void){ 9970 9971 // BIG 9972 9973 btstack_linked_list_iterator_t it; 9974 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9975 while (btstack_linked_list_iterator_has_next(&it)){ 9976 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9977 // track number completed packet timestamps 9978 if (big->num_completed_timestamp_current_valid){ 9979 big->num_completed_timestamp_current_valid = false; 9980 if (big->num_completed_timestamp_previous_valid){ 9981 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9982 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9983 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9984 big->num_completed_timestamp_previous_ms); 9985 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9986 // to catch up, skip packet on all BIS 9987 uint8_t i; 9988 for (i=0;i<big->num_bis;i++){ 9989 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9990 if (iso_stream){ 9991 iso_stream->num_packets_to_skip++; 9992 } 9993 } 9994 } 9995 } 9996 big->num_completed_timestamp_previous_valid = true; 9997 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9998 } 9999 10000 if (big->can_send_now_requested){ 10001 // check if no outgoing iso packets pending and no can send now have to be emitted 10002 uint8_t i; 10003 bool can_send = true; 10004 uint8_t num_iso_queued_minimum = 0; 10005 for (i=0;i<big->num_bis;i++){ 10006 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10007 if (iso_stream == NULL) continue; 10008 // handle case where individual ISO packet was sent too late: 10009 // for each additionally queued packet, a new one needs to get skipped 10010 if (i==0){ 10011 num_iso_queued_minimum = iso_stream->num_packets_sent; 10012 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10013 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10014 iso_stream->num_packets_to_skip += num_packets_to_skip; 10015 iso_stream->num_packets_sent -= num_packets_to_skip; 10016 } 10017 // check if we can send now 10018 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10019 can_send = false; 10020 break; 10021 } 10022 } 10023 if (can_send){ 10024 // propagate can send now to individual streams 10025 big->can_send_now_requested = false; 10026 for (i=0;i<big->num_bis;i++){ 10027 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10028 iso_stream->emit_ready_to_send = true; 10029 } 10030 } 10031 } 10032 } 10033 10034 if (hci_stack->hci_packet_buffer_reserved) return; 10035 10036 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10037 while (btstack_linked_list_iterator_has_next(&it)){ 10038 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10039 // report bis ready 10040 uint8_t i; 10041 for (i=0;i<big->num_bis;i++){ 10042 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10043 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10044 iso_stream->emit_ready_to_send = false; 10045 hci_emit_bis_can_send_now(big, i); 10046 break; 10047 } 10048 } 10049 } 10050 10051 // CIS 10052 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10053 while (btstack_linked_list_iterator_has_next(&it)) { 10054 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10055 if ((iso_stream->can_send_now_requested) && 10056 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10057 iso_stream->can_send_now_requested = false; 10058 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10059 } 10060 } 10061 } 10062 10063 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10064 if (hci_big_for_handle(big_params->big_handle) != NULL){ 10065 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10066 } 10067 if (big_params->num_bis == 0){ 10068 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10069 } 10070 if (big_params->num_bis > MAX_NR_BIS){ 10071 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10072 } 10073 10074 // reserve ISO Streams 10075 uint8_t i; 10076 uint8_t status = ERROR_CODE_SUCCESS; 10077 for (i=0;i<big_params->num_bis;i++){ 10078 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_params->big_handle, i); 10079 if (iso_stream == NULL) { 10080 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10081 break; 10082 } 10083 } 10084 10085 // free structs on error 10086 if (status != ERROR_CODE_SUCCESS){ 10087 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 10088 return status; 10089 } 10090 10091 le_audio_big_t * big = storage; 10092 big->big_handle = big_params->big_handle; 10093 big->params = big_params; 10094 big->state = LE_AUDIO_BIG_STATE_CREATE; 10095 big->num_bis = big_params->num_bis; 10096 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10097 10098 hci_run(); 10099 10100 return ERROR_CODE_SUCCESS; 10101 } 10102 10103 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10104 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 10105 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10106 } 10107 if (big_sync_params->num_bis == 0){ 10108 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10109 } 10110 if (big_sync_params->num_bis > MAX_NR_BIS){ 10111 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10112 } 10113 10114 le_audio_big_sync_t * big_sync = storage; 10115 big_sync->big_handle = big_sync_params->big_handle; 10116 big_sync->params = big_sync_params; 10117 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10118 big_sync->num_bis = big_sync_params->num_bis; 10119 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10120 10121 hci_run(); 10122 10123 return ERROR_CODE_SUCCESS; 10124 } 10125 10126 uint8_t gap_big_terminate(uint8_t big_handle){ 10127 le_audio_big_t * big = hci_big_for_handle(big_handle); 10128 if (big == NULL){ 10129 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10130 } 10131 switch (big->state){ 10132 case LE_AUDIO_BIG_STATE_CREATE: 10133 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10134 hci_emit_big_terminated(big); 10135 break; 10136 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10137 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10138 break; 10139 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10140 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10141 case LE_AUDIO_BIG_STATE_ACTIVE: 10142 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10143 hci_run(); 10144 break; 10145 default: 10146 return ERROR_CODE_COMMAND_DISALLOWED; 10147 } 10148 return ERROR_CODE_SUCCESS; 10149 } 10150 10151 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10152 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10153 if (big_sync == NULL){ 10154 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10155 } 10156 switch (big_sync->state){ 10157 case LE_AUDIO_BIG_STATE_CREATE: 10158 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10159 hci_emit_big_sync_stopped(big_handle); 10160 break; 10161 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10162 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10163 break; 10164 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10165 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10166 case LE_AUDIO_BIG_STATE_ACTIVE: 10167 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10168 hci_run(); 10169 break; 10170 default: 10171 return ERROR_CODE_COMMAND_DISALLOWED; 10172 } 10173 return ERROR_CODE_SUCCESS; 10174 } 10175 10176 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10177 le_audio_big_t * big = hci_big_for_handle(big_handle); 10178 if (big == NULL){ 10179 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10180 } 10181 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10182 return ERROR_CODE_COMMAND_DISALLOWED; 10183 } 10184 big->can_send_now_requested = true; 10185 hci_iso_notify_can_send_now(); 10186 return ERROR_CODE_SUCCESS; 10187 } 10188 10189 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10190 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10191 if (iso_stream == NULL){ 10192 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10193 } 10194 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10195 return ERROR_CODE_COMMAND_DISALLOWED; 10196 } 10197 iso_stream->can_send_now_requested = true; 10198 hci_iso_notify_can_send_now(); 10199 return ERROR_CODE_SUCCESS; 10200 } 10201 10202 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10203 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10204 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10205 } 10206 if (cig_params->num_cis == 0){ 10207 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10208 } 10209 if (cig_params->num_cis > MAX_NR_BIS){ 10210 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10211 } 10212 10213 // reserve ISO Streams 10214 uint8_t i; 10215 uint8_t status = ERROR_CODE_SUCCESS; 10216 for (i=0;i<cig_params->num_cis;i++){ 10217 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10218 if (iso_stream == NULL) { 10219 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10220 break; 10221 } 10222 } 10223 10224 // free structs on error 10225 if (status != ERROR_CODE_SUCCESS){ 10226 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10227 return status; 10228 } 10229 10230 le_audio_cig_t * cig = storage; 10231 cig->cig_id = cig_params->cig_id; 10232 cig->num_cis = cig_params->num_cis; 10233 cig->params = cig_params; 10234 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10235 for (i=0;i<cig->num_cis;i++){ 10236 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10237 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10238 cig->cis_setup_active[i] = false; 10239 cig->cis_established[i] = false; 10240 } 10241 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10242 10243 hci_run(); 10244 10245 return ERROR_CODE_SUCCESS; 10246 } 10247 10248 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10249 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10250 if (cig == NULL){ 10251 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10252 } 10253 10254 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10255 return ERROR_CODE_COMMAND_DISALLOWED; 10256 } 10257 10258 // store ACL Connection Handles 10259 uint8_t i; 10260 for (i=0;i<cig->num_cis;i++){ 10261 // check that all con handles exist and store 10262 hci_con_handle_t cis_handle = cis_con_handles[i]; 10263 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10264 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10265 } 10266 uint8_t j; 10267 bool found = false; 10268 for (j=0;j<cig->num_cis;j++){ 10269 if (cig->cis_con_handles[j] == cis_handle){ 10270 cig->acl_con_handles[j] = acl_con_handles[j]; 10271 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10272 btstack_assert(iso_stream != NULL); 10273 iso_stream->acl_handle = acl_con_handles[j]; 10274 found = true; 10275 break; 10276 } 10277 } 10278 if (!found){ 10279 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10280 } 10281 } 10282 10283 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10284 hci_run(); 10285 10286 return ERROR_CODE_SUCCESS; 10287 } 10288 10289 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10290 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10291 if (iso_stream == NULL){ 10292 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10293 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10294 } 10295 10296 // set next state and continue 10297 iso_stream->state = state; 10298 hci_run(); 10299 return ERROR_CODE_SUCCESS; 10300 } 10301 10302 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10303 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10304 } 10305 10306 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10307 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10308 } 10309 10310 10311 #endif 10312 #endif /* ENABLE_BLE */ 10313 10314 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10315 void hci_setup_test_connections_fuzz(void){ 10316 hci_connection_t * conn; 10317 10318 // default address: 66:55:44:33:00:01 10319 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10320 10321 // setup Controller info 10322 hci_stack->num_cmd_packets = 255; 10323 hci_stack->acl_packets_total_num = 255; 10324 10325 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10326 addr[5] = 0x01; 10327 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10328 conn->con_handle = addr[5]; 10329 conn->state = RECEIVED_CONNECTION_REQUEST; 10330 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10331 10332 // setup incoming Classic SCO connection with con handle 0x0002 10333 addr[5] = 0x02; 10334 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10335 conn->con_handle = addr[5]; 10336 conn->state = RECEIVED_CONNECTION_REQUEST; 10337 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10338 10339 // setup ready Classic ACL connection with con handle 0x0003 10340 addr[5] = 0x03; 10341 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10342 conn->con_handle = addr[5]; 10343 conn->state = OPEN; 10344 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10345 10346 // setup ready Classic SCO connection with con handle 0x0004 10347 addr[5] = 0x04; 10348 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10349 conn->con_handle = addr[5]; 10350 conn->state = OPEN; 10351 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10352 10353 // setup ready LE ACL connection with con handle 0x005 and public address 10354 addr[5] = 0x05; 10355 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10356 conn->con_handle = addr[5]; 10357 conn->state = OPEN; 10358 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10359 conn->sm_connection.sm_connection_encrypted = 1; 10360 } 10361 10362 void hci_free_connections_fuzz(void){ 10363 btstack_linked_list_iterator_t it; 10364 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10365 while (btstack_linked_list_iterator_has_next(&it)){ 10366 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10367 btstack_linked_list_iterator_remove(&it); 10368 btstack_memory_hci_connection_free(con); 10369 } 10370 } 10371 void hci_simulate_working_fuzz(void){ 10372 hci_stack->le_scanning_param_update = false; 10373 hci_init_done(); 10374 hci_stack->num_cmd_packets = 255; 10375 } 10376 #endif 10377