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 bool 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 bool 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 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 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1382 static const struct { 1383 uint16_t type; 1384 uint16_t payload_length; 1385 } hci_sco_packet_type_to_payload_length[] = { 1386 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1387 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1388 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1389 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1390 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1391 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1392 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1393 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1394 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1395 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1396 }; 1397 1398 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1399 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1400 unsigned int i; 1401 // disable packet types due to missing local supported features 1402 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1403 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1404 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1405 if (feature_set) continue; 1406 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); 1407 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1408 } 1409 return packet_types; 1410 } 1411 1412 uint16_t hci_usable_sco_packet_types(void){ 1413 return hci_stack->usable_packet_types_sco; 1414 } 1415 1416 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1417 uint8_t i; 1418 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1419 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1420 return hci_sco_packet_type_to_payload_length[i].payload_length; 1421 } 1422 } 1423 return 0; 1424 } 1425 1426 #endif 1427 1428 uint8_t* hci_get_outgoing_packet_buffer(void){ 1429 // hci packet buffer is >= acl data packet length 1430 return hci_stack->hci_packet_buffer; 1431 } 1432 1433 uint16_t hci_max_acl_data_packet_length(void){ 1434 return hci_stack->acl_data_packet_length; 1435 } 1436 1437 #ifdef ENABLE_CLASSIC 1438 bool hci_extended_sco_link_supported(void){ 1439 // No. 31, byte 3, bit 7 1440 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1441 } 1442 #endif 1443 1444 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1445 // No. 54, byte 6, bit 6 1446 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1447 } 1448 1449 #ifdef ENABLE_CLASSIC 1450 static int gap_ssp_supported(void){ 1451 // No. 51, byte 6, bit 3 1452 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1453 } 1454 #endif 1455 1456 static int hci_classic_supported(void){ 1457 #ifdef ENABLE_CLASSIC 1458 // No. 37, byte 4, bit 5, = No BR/EDR Support 1459 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1460 #else 1461 return 0; 1462 #endif 1463 } 1464 1465 static int hci_le_supported(void){ 1466 #ifdef ENABLE_BLE 1467 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1468 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1469 #else 1470 return 0; 1471 #endif 1472 } 1473 1474 static bool hci_command_supported(uint8_t command_index){ 1475 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1476 } 1477 1478 #ifdef ENABLE_BLE 1479 1480 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1481 static bool hci_extended_advertising_supported(void){ 1482 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1483 } 1484 #endif 1485 1486 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1487 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1488 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1489 } else { 1490 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1491 } 1492 } 1493 1494 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1495 *addr_type = hci_stack->le_own_addr_type; 1496 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1497 } 1498 1499 #ifdef ENABLE_LE_PERIPHERAL 1500 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1501 *addr_type = hci_stack->le_advertisements_own_addr_type; 1502 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1503 }; 1504 #endif 1505 1506 #ifdef ENABLE_LE_CENTRAL 1507 1508 /** 1509 * @brief Get own addr type and address used for LE connections (Central) 1510 */ 1511 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1512 *addr_type = hci_stack->le_connection_own_addr_type; 1513 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1514 } 1515 1516 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1517 1518 uint16_t offset = 3; 1519 uint8_t num_reports = packet[offset]; 1520 offset += 1; 1521 1522 uint16_t i; 1523 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1524 for (i=0; (i<num_reports) && (offset < size);i++){ 1525 // sanity checks on data_length: 1526 uint8_t data_length = packet[offset + 8]; 1527 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1528 if ((offset + 9u + data_length + 1u) > size) return; 1529 // setup event 1530 uint8_t event_size = 10u + data_length; 1531 uint16_t pos = 0; 1532 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1533 event[pos++] = event_size; 1534 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1535 offset += 8; 1536 pos += 8; 1537 event[pos++] = packet[offset + 1 + data_length]; // rssi 1538 event[pos++] = data_length; 1539 offset++; 1540 (void)memcpy(&event[pos], &packet[offset], data_length); 1541 pos += data_length; 1542 offset += data_length + 1u; // rssi 1543 hci_emit_event(event, pos, 1); 1544 } 1545 } 1546 1547 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1548 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1549 uint16_t offset = 3; 1550 uint8_t num_reports = packet[offset++]; 1551 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1552 uint8_t i; 1553 for (i=0; (i<num_reports) && (offset < size);i++){ 1554 // sanity checks on data_length: 1555 uint16_t data_length = packet[offset + 23]; 1556 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1557 if ((offset + 24u + data_length) > size) return; 1558 uint16_t event_type = little_endian_read_16(packet, offset); 1559 offset += 2; 1560 if ((event_type & 0x10) != 0) { 1561 // setup legacy event 1562 uint8_t legacy_event_type; 1563 switch (event_type){ 1564 case 0b0010011: 1565 // ADV_IND 1566 legacy_event_type = 0; 1567 break; 1568 case 0b0010101: 1569 // ADV_DIRECT_IND 1570 legacy_event_type = 1; 1571 break; 1572 case 0b0010010: 1573 // ADV_SCAN_IND 1574 legacy_event_type = 2; 1575 break; 1576 case 0b0010000: 1577 // ADV_NONCONN_IND 1578 legacy_event_type = 3; 1579 break; 1580 case 0b0011011: 1581 case 0b0011010: 1582 // SCAN_RSP 1583 legacy_event_type = 4; 1584 break; 1585 default: 1586 legacy_event_type = 0; 1587 break; 1588 } 1589 uint16_t pos = 0; 1590 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1591 event[pos++] = 10u + data_length; 1592 event[pos++] = legacy_event_type; 1593 // copy address type + address 1594 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1595 offset += 7; 1596 pos += 7; 1597 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1598 offset += 4; 1599 // copy rssi 1600 event[pos++] = packet[offset++]; 1601 // skip periodic advertising interval and direct address 1602 offset += 9; 1603 // copy data len + data; 1604 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1605 pos += 1 +data_length; 1606 offset += 1+ data_length; 1607 hci_emit_event(event, pos, 1); 1608 } else { 1609 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1610 uint8_t report_len = 24 + data_length; 1611 event[1] = report_len; 1612 little_endian_store_16(event, 2, event_type); 1613 memcpy(&event[4], &packet[offset], report_len); 1614 offset += report_len; 1615 hci_emit_event(event, 2 + report_len, 1); 1616 } 1617 } 1618 } 1619 #endif 1620 1621 #endif 1622 #endif 1623 1624 #ifdef ENABLE_BLE 1625 #ifdef ENABLE_LE_PERIPHERAL 1626 static void hci_update_advertisements_enabled_for_current_roles(void){ 1627 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1628 // get number of active le slave connections 1629 int num_slave_connections = 0; 1630 btstack_linked_list_iterator_t it; 1631 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1632 while (btstack_linked_list_iterator_has_next(&it)){ 1633 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1634 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1635 if (con->state != OPEN) continue; 1636 if (con->role != HCI_ROLE_SLAVE) continue; 1637 if (!hci_is_le_connection(con)) continue; 1638 num_slave_connections++; 1639 } 1640 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1641 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1642 } else { 1643 hci_stack->le_advertisements_enabled_for_current_roles = false; 1644 } 1645 } 1646 #endif 1647 #endif 1648 1649 #ifdef ENABLE_CLASSIC 1650 static void gap_run_set_local_name(void){ 1651 hci_reserve_packet_buffer(); 1652 uint8_t * packet = hci_stack->hci_packet_buffer; 1653 // construct HCI Command and send 1654 uint16_t opcode = hci_write_local_name.opcode; 1655 hci_stack->last_cmd_opcode = opcode; 1656 packet[0] = opcode & 0xff; 1657 packet[1] = opcode >> 8; 1658 packet[2] = DEVICE_NAME_LEN; 1659 memset(&packet[3], 0, DEVICE_NAME_LEN); 1660 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1661 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1662 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1663 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1664 // expand '00:00:00:00:00:00' in name with bd_addr 1665 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1666 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1667 } 1668 1669 static void gap_run_set_eir_data(void){ 1670 hci_reserve_packet_buffer(); 1671 uint8_t * packet = hci_stack->hci_packet_buffer; 1672 // construct HCI Command in-place and send 1673 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1674 hci_stack->last_cmd_opcode = opcode; 1675 uint16_t offset = 0; 1676 packet[offset++] = opcode & 0xff; 1677 packet[offset++] = opcode >> 8; 1678 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1679 packet[offset++] = 0; // FEC not required 1680 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1681 if (hci_stack->eir_data){ 1682 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1683 ad_context_t context; 1684 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1685 uint8_t data_type = ad_iterator_get_data_type(&context); 1686 uint8_t size = ad_iterator_get_data_len(&context); 1687 const uint8_t *data = ad_iterator_get_data(&context); 1688 // copy item 1689 packet[offset++] = size + 1; 1690 packet[offset++] = data_type; 1691 memcpy(&packet[offset], data, size); 1692 // update name item 1693 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1694 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1695 } 1696 offset += size; 1697 } 1698 } else { 1699 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1700 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1701 packet[offset++] = bytes_to_copy + 1; 1702 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1703 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1704 // expand '00:00:00:00:00:00' in name with bd_addr 1705 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1706 } 1707 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1708 } 1709 1710 static void hci_run_gap_tasks_classic(void){ 1711 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1712 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1713 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1714 return; 1715 } 1716 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1717 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1718 gap_run_set_local_name(); 1719 return; 1720 } 1721 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1722 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1723 gap_run_set_eir_data(); 1724 return; 1725 } 1726 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1727 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1728 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1729 return; 1730 } 1731 // write page scan activity 1732 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1733 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1734 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1735 return; 1736 } 1737 // write page scan type 1738 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1739 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1740 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1741 return; 1742 } 1743 // write page timeout 1744 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1745 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1746 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1747 return; 1748 } 1749 // send scan enable 1750 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1751 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1752 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1753 return; 1754 } 1755 // send write scan activity 1756 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1757 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1758 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1759 return; 1760 } 1761 // send write inquiry transmit power level 1762 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1763 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1764 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1765 return; 1766 } 1767 } 1768 #endif 1769 1770 #ifndef HAVE_HOST_CONTROLLER_API 1771 1772 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1773 if (!hci_stack->config) return 0; 1774 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1775 // Limit baud rate for Broadcom chipsets to 3 mbps 1776 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1777 baud_rate = 3000000; 1778 } 1779 return baud_rate; 1780 } 1781 1782 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1783 UNUSED(ds); 1784 1785 switch (hci_stack->substate){ 1786 case HCI_INIT_W4_SEND_RESET: 1787 log_info("Resend HCI Reset"); 1788 hci_stack->substate = HCI_INIT_SEND_RESET; 1789 hci_stack->num_cmd_packets = 1; 1790 hci_run(); 1791 break; 1792 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1793 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1794 if (hci_stack->hci_transport->reset_link){ 1795 hci_stack->hci_transport->reset_link(); 1796 } 1797 1798 /* fall through */ 1799 1800 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1801 log_info("Resend HCI Reset - CSR Warm Boot"); 1802 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1803 hci_stack->num_cmd_packets = 1; 1804 hci_run(); 1805 break; 1806 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1807 if (hci_stack->hci_transport->set_baudrate){ 1808 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1809 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1810 hci_stack->hci_transport->set_baudrate(baud_rate); 1811 } 1812 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1813 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1814 if (hci_stack->hci_transport->reset_link){ 1815 log_info("Link Reset"); 1816 hci_stack->hci_transport->reset_link(); 1817 } 1818 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1819 hci_run(); 1820 } 1821 break; 1822 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1823 // otherwise continue 1824 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1825 hci_send_cmd(&hci_read_local_supported_commands); 1826 break; 1827 default: 1828 break; 1829 } 1830 } 1831 #endif 1832 1833 static void hci_initializing_next_state(void){ 1834 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1835 } 1836 1837 static void hci_init_done(void){ 1838 // done. tell the app 1839 log_info("hci_init_done -> HCI_STATE_WORKING"); 1840 hci_stack->state = HCI_STATE_WORKING; 1841 hci_emit_state(); 1842 } 1843 1844 // assumption: hci_can_send_command_packet_now() == true 1845 static void hci_initializing_run(void){ 1846 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1847 1848 if (!hci_can_send_command_packet_now()) return; 1849 1850 #ifndef HAVE_HOST_CONTROLLER_API 1851 bool need_baud_change = hci_stack->config 1852 && hci_stack->chipset 1853 && hci_stack->chipset->set_baudrate_command 1854 && hci_stack->hci_transport->set_baudrate 1855 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1856 #endif 1857 1858 switch (hci_stack->substate){ 1859 case HCI_INIT_SEND_RESET: 1860 hci_state_reset(); 1861 1862 #ifndef HAVE_HOST_CONTROLLER_API 1863 // prepare reset if command complete not received in 100ms 1864 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1865 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1866 btstack_run_loop_add_timer(&hci_stack->timeout); 1867 #endif 1868 // send command 1869 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1870 hci_send_cmd(&hci_reset); 1871 break; 1872 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1873 hci_send_cmd(&hci_read_local_version_information); 1874 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1875 break; 1876 1877 #ifndef HAVE_HOST_CONTROLLER_API 1878 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1879 hci_state_reset(); 1880 // prepare reset if command complete not received in 100ms 1881 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1882 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1883 btstack_run_loop_add_timer(&hci_stack->timeout); 1884 // send command 1885 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1886 hci_send_cmd(&hci_reset); 1887 break; 1888 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1889 hci_state_reset(); 1890 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1891 hci_send_cmd(&hci_reset); 1892 break; 1893 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1894 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1895 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1896 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1897 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1898 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1899 break; 1900 } 1901 case HCI_INIT_SET_BD_ADDR: 1902 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1903 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1904 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1905 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1906 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1907 break; 1908 case HCI_INIT_SEND_READ_LOCAL_NAME: 1909 #ifdef ENABLE_CLASSIC 1910 hci_send_cmd(&hci_read_local_name); 1911 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1912 break; 1913 #endif 1914 /* fall through */ 1915 1916 case HCI_INIT_SEND_BAUD_CHANGE: 1917 if (need_baud_change) { 1918 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1919 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1920 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1921 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1922 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1923 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1924 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1925 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1926 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1927 btstack_run_loop_add_timer(&hci_stack->timeout); 1928 } 1929 break; 1930 } 1931 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1932 1933 /* fall through */ 1934 1935 case HCI_INIT_CUSTOM_INIT: 1936 case HCI_INIT_CUSTOM_PRE_INIT: 1937 // Custom initialization 1938 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1939 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1940 bool send_cmd = false; 1941 switch (hci_stack->chipset_result){ 1942 case BTSTACK_CHIPSET_VALID_COMMAND: 1943 send_cmd = true; 1944 switch (hci_stack->substate){ 1945 case HCI_INIT_CUSTOM_INIT: 1946 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1947 break; 1948 case HCI_INIT_CUSTOM_PRE_INIT: 1949 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1950 break; 1951 default: 1952 btstack_assert(false); 1953 break; 1954 } 1955 break; 1956 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1957 send_cmd = true; 1958 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1959 log_info("CSR Warm Boot"); 1960 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1961 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1962 btstack_run_loop_add_timer(&hci_stack->timeout); 1963 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1964 && hci_stack->config 1965 && hci_stack->chipset 1966 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1967 && hci_stack->hci_transport->set_baudrate 1968 && hci_transport_uart_get_main_baud_rate()){ 1969 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1970 } else { 1971 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1972 } 1973 break; 1974 default: 1975 break; 1976 } 1977 1978 if (send_cmd){ 1979 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1980 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1981 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1982 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1983 break; 1984 } 1985 log_info("Init script done"); 1986 1987 // Custom Pre-Init complete, start regular init with HCI Reset 1988 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 1989 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1990 hci_send_cmd(&hci_reset); 1991 break; 1992 } 1993 1994 // Init script download on Broadcom chipsets causes: 1995 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1996 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1997 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1998 1999 // - baud rate to reset, restore UART baud rate if needed 2000 if (need_baud_change) { 2001 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2002 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2003 hci_stack->hci_transport->set_baudrate(baud_rate); 2004 } 2005 2006 uint16_t bcm_delay_ms = 300; 2007 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2008 // -> Work around: wait here. 2009 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2010 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2011 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2012 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2013 btstack_run_loop_add_timer(&hci_stack->timeout); 2014 break; 2015 } 2016 } 2017 #endif 2018 /* fall through */ 2019 2020 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2021 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2022 hci_send_cmd(&hci_read_local_supported_commands); 2023 break; 2024 case HCI_INIT_READ_BD_ADDR: 2025 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2026 hci_send_cmd(&hci_read_bd_addr); 2027 break; 2028 case HCI_INIT_READ_BUFFER_SIZE: 2029 // only read buffer size if supported 2030 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2031 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2032 hci_send_cmd(&hci_read_buffer_size); 2033 break; 2034 } 2035 2036 /* fall through */ 2037 2038 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2039 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2040 hci_send_cmd(&hci_read_local_supported_features); 2041 break; 2042 2043 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2044 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2045 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2046 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2047 break; 2048 case HCI_INIT_HOST_BUFFER_SIZE: 2049 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2050 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2051 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2052 break; 2053 #endif 2054 2055 case HCI_INIT_SET_EVENT_MASK: 2056 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2057 if (hci_le_supported()){ 2058 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2059 } else { 2060 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2061 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2062 } 2063 break; 2064 2065 case HCI_INIT_SET_EVENT_MASK_2: 2066 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2067 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2068 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2069 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2070 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2071 // Encryption Change Event v2 - bit 25 2072 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2073 break; 2074 } 2075 2076 #ifdef ENABLE_CLASSIC 2077 /* fall through */ 2078 2079 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2080 if (hci_classic_supported() && gap_ssp_supported()){ 2081 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2082 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2083 break; 2084 } 2085 2086 /* fall through */ 2087 2088 case HCI_INIT_WRITE_INQUIRY_MODE: 2089 if (hci_classic_supported()){ 2090 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2091 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2092 break; 2093 } 2094 2095 /* fall through */ 2096 2097 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2098 // skip write secure connections host support if not supported or disabled 2099 if (hci_classic_supported() && hci_stack->secure_connections_enable 2100 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2101 hci_stack->secure_connections_active = true; 2102 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2103 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2104 break; 2105 } 2106 2107 /* fall through */ 2108 2109 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2110 // skip set min encryption key size 2111 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2112 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2113 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2114 break; 2115 } 2116 2117 #ifdef ENABLE_SCO_OVER_HCI 2118 /* fall through */ 2119 2120 // only sent if ENABLE_SCO_OVER_HCI is defined 2121 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2122 // skip write synchronous flow control if not supported 2123 if (hci_classic_supported() 2124 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2125 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2126 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2127 break; 2128 } 2129 /* fall through */ 2130 2131 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2132 // skip write default erroneous data reporting if not supported 2133 if (hci_classic_supported() 2134 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2135 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2136 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2137 break; 2138 } 2139 #endif 2140 2141 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2142 /* fall through */ 2143 2144 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2145 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2146 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2147 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2148 #ifdef ENABLE_SCO_OVER_HCI 2149 log_info("BCM: Route SCO data via HCI transport"); 2150 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2151 #endif 2152 #ifdef ENABLE_SCO_OVER_PCM 2153 log_info("BCM: Route SCO data via PCM interface"); 2154 #ifdef ENABLE_BCM_PCM_WBS 2155 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2156 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2157 #else 2158 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2159 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2160 #endif 2161 #endif 2162 break; 2163 } 2164 #endif 2165 2166 #ifdef ENABLE_SCO_OVER_PCM 2167 /* fall through */ 2168 2169 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2170 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2171 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2172 log_info("BCM: Config PCM interface for I2S"); 2173 #ifdef ENABLE_BCM_PCM_WBS 2174 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2175 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2176 #else 2177 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2178 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2179 #endif 2180 break; 2181 } 2182 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2183 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2184 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2185 log_info("BCM: Config PCM Data format"); 2186 // msb first, fill bits 0, left justified 2187 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2188 break; 2189 } 2190 #endif 2191 #endif 2192 2193 #ifdef ENABLE_BLE 2194 /* fall through */ 2195 2196 // LE INIT 2197 case HCI_INIT_LE_READ_BUFFER_SIZE: 2198 if (hci_le_supported()){ 2199 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2200 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2201 hci_send_cmd(&hci_le_read_buffer_size_v2); 2202 } else { 2203 hci_send_cmd(&hci_le_read_buffer_size); 2204 } 2205 break; 2206 } 2207 2208 /* fall through */ 2209 2210 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2211 // skip write le host if not supported (e.g. on LE only EM9301) 2212 if (hci_le_supported() 2213 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2214 // LE Supported Host = 1, Simultaneous Host = 0 2215 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2216 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2217 break; 2218 } 2219 2220 /* fall through */ 2221 2222 case HCI_INIT_LE_SET_EVENT_MASK: 2223 if (hci_le_supported()){ 2224 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2225 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2226 break; 2227 } 2228 #endif 2229 2230 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2231 /* fall through */ 2232 2233 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2234 if (hci_le_supported() 2235 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2236 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2237 hci_send_cmd(&hci_le_read_maximum_data_length); 2238 break; 2239 } 2240 2241 /* fall through */ 2242 2243 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2244 if (hci_le_supported() 2245 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2246 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2247 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2248 break; 2249 } 2250 #endif 2251 2252 #ifdef ENABLE_LE_CENTRAL 2253 /* fall through */ 2254 2255 case HCI_INIT_READ_WHITE_LIST_SIZE: 2256 if (hci_le_supported()){ 2257 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2258 hci_send_cmd(&hci_le_read_white_list_size); 2259 break; 2260 } 2261 2262 #endif 2263 2264 #ifdef ENABLE_LE_PERIPHERAL 2265 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2266 /* fall through */ 2267 2268 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2269 if (hci_extended_advertising_supported()){ 2270 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2271 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2272 break; 2273 } 2274 #endif 2275 #endif 2276 /* fall through */ 2277 2278 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2279 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2280 if (hci_le_supported()) { 2281 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2282 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2283 break; 2284 } 2285 #endif 2286 2287 /* fall through */ 2288 2289 case HCI_INIT_DONE: 2290 hci_stack->substate = HCI_INIT_DONE; 2291 // main init sequence complete 2292 #ifdef ENABLE_CLASSIC 2293 // check if initial Classic GAP Tasks are completed 2294 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2295 hci_run_gap_tasks_classic(); 2296 break; 2297 } 2298 #endif 2299 #ifdef ENABLE_BLE 2300 #ifdef ENABLE_LE_CENTRAL 2301 // check if initial LE GAP Tasks are completed 2302 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2303 hci_run_general_gap_le(); 2304 break; 2305 } 2306 #endif 2307 #endif 2308 hci_init_done(); 2309 break; 2310 2311 default: 2312 return; 2313 } 2314 } 2315 2316 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2317 bool command_completed = false; 2318 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2319 uint16_t opcode = little_endian_read_16(packet,3); 2320 if (opcode == hci_stack->last_cmd_opcode){ 2321 command_completed = true; 2322 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2323 } else { 2324 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2325 } 2326 } 2327 2328 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2329 uint8_t status = packet[2]; 2330 uint16_t opcode = little_endian_read_16(packet,4); 2331 if (opcode == hci_stack->last_cmd_opcode){ 2332 if (status){ 2333 command_completed = true; 2334 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2335 } else { 2336 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2337 } 2338 } else { 2339 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2340 } 2341 } 2342 #ifndef HAVE_HOST_CONTROLLER_API 2343 // Vendor == CSR 2344 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2345 // TODO: track actual command 2346 command_completed = true; 2347 } 2348 2349 // Vendor == Toshiba 2350 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2351 // TODO: track actual command 2352 command_completed = true; 2353 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2354 hci_stack->num_cmd_packets = 1; 2355 } 2356 #endif 2357 2358 return command_completed; 2359 } 2360 2361 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2362 2363 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2364 2365 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2366 2367 #ifndef HAVE_HOST_CONTROLLER_API 2368 2369 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2370 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2371 // 2372 // HCI Reset 2373 // Timeout 100 ms 2374 // HCI Reset 2375 // Command Complete Reset 2376 // HCI Read Local Version Information 2377 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2378 // hang... 2379 // 2380 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2381 if (!command_completed 2382 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2383 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2384 2385 uint16_t opcode = little_endian_read_16(packet,3); 2386 if (opcode == hci_reset.opcode){ 2387 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2388 return; 2389 } 2390 } 2391 2392 // CSR & H5 2393 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2394 if (!command_completed 2395 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2396 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2397 2398 uint16_t opcode = little_endian_read_16(packet,3); 2399 if (opcode == hci_reset.opcode){ 2400 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2401 return; 2402 } 2403 } 2404 2405 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2406 // fix: Correct substate and behave as command below 2407 if (command_completed){ 2408 switch (hci_stack->substate){ 2409 case HCI_INIT_SEND_RESET: 2410 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2411 break; 2412 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2413 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2414 break; 2415 default: 2416 break; 2417 } 2418 } 2419 2420 #endif 2421 2422 if (!command_completed) return; 2423 2424 bool need_baud_change = false; 2425 bool need_addr_change = false; 2426 2427 #ifndef HAVE_HOST_CONTROLLER_API 2428 need_baud_change = hci_stack->config 2429 && hci_stack->chipset 2430 && hci_stack->chipset->set_baudrate_command 2431 && hci_stack->hci_transport->set_baudrate 2432 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2433 2434 need_addr_change = hci_stack->custom_bd_addr_set 2435 && hci_stack->chipset 2436 && hci_stack->chipset->set_bd_addr_command; 2437 #endif 2438 2439 switch(hci_stack->substate){ 2440 2441 #ifndef HAVE_HOST_CONTROLLER_API 2442 case HCI_INIT_SEND_RESET: 2443 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2444 // fix: just correct substate and behave as command below 2445 2446 /* fall through */ 2447 #endif 2448 2449 case HCI_INIT_W4_SEND_RESET: 2450 btstack_run_loop_remove_timer(&hci_stack->timeout); 2451 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2452 return; 2453 2454 #ifndef HAVE_HOST_CONTROLLER_API 2455 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2456 // for STLC2500D, baud rate change already happened. 2457 // for others, baud rate gets changed now 2458 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2459 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2460 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2461 hci_stack->hci_transport->set_baudrate(baud_rate); 2462 } 2463 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2464 return; 2465 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2466 btstack_run_loop_remove_timer(&hci_stack->timeout); 2467 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2468 return; 2469 case HCI_INIT_W4_CUSTOM_INIT: 2470 // repeat custom init 2471 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2472 return; 2473 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2474 // repeat custom init 2475 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2476 return; 2477 #endif 2478 2479 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2480 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2481 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2482 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2483 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2484 return; 2485 } 2486 if (need_addr_change){ 2487 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2488 return; 2489 } 2490 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2491 return; 2492 #ifndef HAVE_HOST_CONTROLLER_API 2493 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2494 if (need_baud_change){ 2495 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2496 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2497 hci_stack->hci_transport->set_baudrate(baud_rate); 2498 } 2499 if (need_addr_change){ 2500 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2501 return; 2502 } 2503 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2504 return; 2505 case HCI_INIT_W4_SET_BD_ADDR: 2506 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2507 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2508 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2509 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2510 return; 2511 } 2512 // skipping st warm boot 2513 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2514 return; 2515 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2516 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2517 return; 2518 #endif 2519 2520 case HCI_INIT_DONE: 2521 // set state if we came here by fall through 2522 hci_stack->substate = HCI_INIT_DONE; 2523 return; 2524 2525 default: 2526 break; 2527 } 2528 hci_initializing_next_state(); 2529 } 2530 2531 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2532 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2533 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2534 // check if we have been aware of the HCI connection 2535 switch (conn->state){ 2536 case SENT_CREATE_CONNECTION: 2537 case RECEIVED_CONNECTION_REQUEST: 2538 case ACCEPTED_CONNECTION_REQUEST: 2539 break; 2540 default: 2541 return; 2542 } 2543 2544 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2545 bd_addr_t bd_address; 2546 (void)memcpy(&bd_address, conn->address, 6); 2547 2548 #ifdef ENABLE_CLASSIC 2549 // cache needed data 2550 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2551 #endif 2552 2553 // connection failed, remove entry 2554 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2555 btstack_memory_hci_connection_free( conn ); 2556 2557 #ifdef ENABLE_CLASSIC 2558 // notify client if dedicated bonding 2559 if (notify_dedicated_bonding_failed){ 2560 log_info("hci notify_dedicated_bonding_failed"); 2561 hci_emit_dedicated_bonding_result(bd_address, status); 2562 } 2563 2564 // if authentication error, also delete link key 2565 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2566 gap_drop_link_key_for_bd_addr(bd_address); 2567 } 2568 #else 2569 UNUSED(status); 2570 #endif 2571 } 2572 2573 #ifdef ENABLE_CLASSIC 2574 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2575 // SSP Controller 2576 if (features[6] & (1 << 3)){ 2577 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2578 } 2579 // eSCO 2580 if (features[3] & (1<<7)){ 2581 conn->remote_supported_features[0] |= 1; 2582 } 2583 // Extended features 2584 if (features[7] & (1<<7)){ 2585 conn->remote_supported_features[0] |= 2; 2586 } 2587 // SCO packet types 2588 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2589 } 2590 2591 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2592 // SSP Host 2593 if (features[0] & (1 << 0)){ 2594 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2595 } 2596 // SC Host 2597 if (features[0] & (1 << 3)){ 2598 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2599 } 2600 } 2601 2602 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2603 // SC Controller 2604 if (features[1] & (1 << 0)){ 2605 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2606 } 2607 } 2608 2609 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2610 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2611 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2612 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2613 if (conn->bonding_flags & BONDING_DEDICATED){ 2614 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2615 } 2616 } 2617 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2618 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2619 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2620 } 2621 2622 #endif 2623 2624 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2625 // handle BT initialization 2626 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2627 hci_initializing_event_handler(packet, size); 2628 } 2629 2630 // help with BT sleep 2631 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2632 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2633 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2634 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2635 hci_initializing_next_state(); 2636 } 2637 } 2638 2639 #ifdef ENABLE_CLASSIC 2640 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2641 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2642 conn->requested_security_level = LEVEL_0; 2643 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2644 hci_emit_security_level(conn->con_handle, security_level); 2645 2646 // dedicated bonding 2647 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2648 conn->bonding_flags &= ~BONDING_DEDICATED; 2649 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2650 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2651 // emit dedicated bonding complete, don't disconnect 2652 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2653 #else 2654 // request disconnect, event is emitted after disconnect 2655 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2656 #endif 2657 } 2658 } 2659 2660 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2661 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2662 conn->encryption_key_size = encryption_key_size; 2663 2664 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2665 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2666 hci_handle_mutual_authentication_completed(conn); 2667 } else { 2668 // otherwise trigger remote feature request and send authentication request 2669 hci_trigger_remote_features_for_connection(conn); 2670 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2671 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2672 } 2673 } 2674 } 2675 #endif 2676 2677 static void hci_store_local_supported_commands(const uint8_t * packet){ 2678 // create mapping table 2679 #define X(name, offset, bit) { offset, bit }, 2680 static struct { 2681 uint8_t byte_offset; 2682 uint8_t bit_position; 2683 } supported_hci_commands_map [] = { 2684 SUPPORTED_HCI_COMMANDS 2685 }; 2686 #undef X 2687 2688 // create names for debug purposes 2689 #ifdef ENABLE_LOG_DEBUG 2690 #define X(name, offset, bit) #name, 2691 static const char * command_names[] = { 2692 SUPPORTED_HCI_COMMANDS 2693 }; 2694 #undef X 2695 #endif 2696 2697 hci_stack->local_supported_commands = 0; 2698 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2699 uint16_t i; 2700 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2701 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2702 #ifdef ENABLE_LOG_DEBUG 2703 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); 2704 #else 2705 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2706 #endif 2707 hci_stack->local_supported_commands |= (1LU << i); 2708 } 2709 } 2710 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2711 } 2712 2713 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2714 UNUSED(size); 2715 2716 uint8_t status = 0; 2717 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2718 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2719 } 2720 uint16_t manufacturer; 2721 #ifdef ENABLE_CLASSIC 2722 hci_connection_t * conn; 2723 #endif 2724 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2725 hci_con_handle_t handle; 2726 #endif 2727 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2728 le_audio_cig_t * cig; 2729 #endif 2730 2731 // get num cmd packets - limit to 1 to reduce complexity 2732 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2733 2734 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2735 switch (opcode){ 2736 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2737 if (status) break; 2738 // terminate, name 248 chars 2739 packet[6+248] = 0; 2740 log_info("local name: %s", &packet[6]); 2741 break; 2742 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2743 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2744 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2745 uint16_t acl_len = little_endian_read_16(packet, 6); 2746 uint16_t sco_len = packet[8]; 2747 2748 // determine usable ACL/SCO payload size 2749 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2750 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2751 2752 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2753 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2754 2755 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2756 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2757 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2758 } 2759 break; 2760 case HCI_OPCODE_HCI_READ_RSSI: 2761 if (status == ERROR_CODE_SUCCESS){ 2762 uint8_t event[5]; 2763 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2764 event[1] = 3; 2765 (void)memcpy(&event[2], &packet[6], 3); 2766 hci_emit_event(event, sizeof(event), 1); 2767 } 2768 break; 2769 #ifdef ENABLE_BLE 2770 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2771 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2772 hci_stack->le_iso_packets_total_num = packet[11]; 2773 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2774 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2775 2776 /* fall through */ 2777 2778 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2779 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2780 hci_stack->le_acl_packets_total_num = packet[8]; 2781 // determine usable ACL payload size 2782 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2783 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2784 } 2785 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); 2786 break; 2787 #endif 2788 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2789 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2790 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2791 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2792 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); 2793 break; 2794 #endif 2795 #ifdef ENABLE_LE_CENTRAL 2796 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2797 hci_stack->le_whitelist_capacity = packet[6]; 2798 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2799 break; 2800 #endif 2801 #ifdef ENABLE_LE_PERIPHERAL 2802 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2803 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2804 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2805 break; 2806 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2807 if (hci_stack->le_advertising_set_in_current_command != 0) { 2808 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2809 hci_stack->le_advertising_set_in_current_command = 0; 2810 if (advertising_set == NULL) break; 2811 uint8_t adv_status = packet[6]; 2812 uint8_t tx_power = packet[7]; 2813 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 }; 2814 if (adv_status == 0){ 2815 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2816 } 2817 hci_emit_event(event, sizeof(event), 1); 2818 } 2819 break; 2820 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2821 if (hci_stack->le_advertising_set_in_current_command != 0) { 2822 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2823 hci_stack->le_advertising_set_in_current_command = 0; 2824 if (advertising_set == NULL) break; 2825 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2826 if (status == 0){ 2827 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2828 } 2829 hci_emit_event(event, sizeof(event), 1); 2830 } 2831 break; 2832 #endif 2833 #endif 2834 case HCI_OPCODE_HCI_READ_BD_ADDR: 2835 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2836 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2837 #ifdef ENABLE_CLASSIC 2838 if (hci_stack->link_key_db){ 2839 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2840 } 2841 #endif 2842 break; 2843 #ifdef ENABLE_CLASSIC 2844 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2845 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2846 break; 2847 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2848 if (status == ERROR_CODE_SUCCESS) { 2849 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2850 } else { 2851 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2852 } 2853 break; 2854 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2855 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2856 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2857 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2858 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2859 hci_emit_event(event, sizeof(event), 1); 2860 } 2861 break; 2862 #endif 2863 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2864 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2865 2866 #ifdef ENABLE_CLASSIC 2867 // determine usable ACL packet types based on host buffer size and supported features 2868 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]); 2869 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2870 // determine usable SCO packet types based on supported features 2871 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2872 &hci_stack->local_supported_features[0]); 2873 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2874 #endif 2875 // Classic/LE 2876 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2877 break; 2878 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2879 manufacturer = little_endian_read_16(packet, 10); 2880 // map Cypress & Infineon to Broadcom 2881 switch (manufacturer){ 2882 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2883 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2884 log_info("Treat Cypress/Infineon as Broadcom"); 2885 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2886 little_endian_store_16(packet, 10, manufacturer); 2887 break; 2888 default: 2889 break; 2890 } 2891 hci_stack->manufacturer = manufacturer; 2892 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2893 break; 2894 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2895 hci_store_local_supported_commands(packet); 2896 break; 2897 #ifdef ENABLE_CLASSIC 2898 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2899 if (status) return; 2900 hci_stack->synchronous_flow_control_enabled = 1; 2901 break; 2902 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2903 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2904 conn = hci_connection_for_handle(handle); 2905 if (conn != NULL) { 2906 uint8_t key_size = 0; 2907 if (status == 0){ 2908 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2909 log_info("Handle %04x key Size: %u", handle, key_size); 2910 } else { 2911 key_size = 1; 2912 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2913 } 2914 hci_handle_read_encryption_key_size_complete(conn, key_size); 2915 } 2916 break; 2917 // assert pairing complete event is emitted. 2918 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2919 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2920 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2921 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2922 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2923 // lookup connection by gap pairing addr 2924 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2925 if (conn == NULL) break; 2926 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2927 break; 2928 2929 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2930 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2931 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2932 uint8_t event[67]; 2933 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2934 event[1] = 65; 2935 (void)memset(&event[2], 0, 65); 2936 if (status == ERROR_CODE_SUCCESS){ 2937 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2938 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2939 event[2] = 3; 2940 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2941 } else { 2942 event[2] = 1; 2943 } 2944 } 2945 hci_emit_event(event, sizeof(event), 0); 2946 break; 2947 } 2948 2949 // note: only needed if user does not provide OOB data 2950 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2951 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2952 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2953 if (conn == NULL) break; 2954 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2955 break; 2956 #endif 2957 #endif 2958 #ifdef ENABLE_BLE 2959 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2960 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2961 // lookup CIG 2962 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2963 if (cig != NULL){ 2964 uint8_t i = 0; 2965 if (status == ERROR_CODE_SUCCESS){ 2966 // assign CIS handles to pre-allocated CIS 2967 btstack_linked_list_iterator_t it; 2968 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2969 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2970 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2971 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2972 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2973 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2974 iso_stream->cis_handle = cis_handle; 2975 cig->cis_con_handles[i] = cis_handle; 2976 i++; 2977 } 2978 } 2979 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2980 hci_emit_cig_created(cig, status); 2981 } else { 2982 hci_emit_cig_created(cig, status); 2983 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2984 } 2985 } 2986 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2987 break; 2988 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2989 if (status != ERROR_CODE_SUCCESS){ 2990 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2991 } 2992 break; 2993 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2994 if (status != ERROR_CODE_SUCCESS){ 2995 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2996 } 2997 break; 2998 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2999 // lookup BIG by state 3000 btstack_linked_list_iterator_t it; 3001 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3002 while (btstack_linked_list_iterator_has_next(&it)) { 3003 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3004 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3005 if (status == ERROR_CODE_SUCCESS){ 3006 big->state_vars.next_bis++; 3007 if (big->state_vars.next_bis == big->num_bis){ 3008 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3009 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3010 } else { 3011 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3012 } 3013 } else { 3014 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3015 big->state_vars.status = status; 3016 } 3017 return; 3018 } 3019 } 3020 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3021 while (btstack_linked_list_iterator_has_next(&it)) { 3022 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3023 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3024 if (status == ERROR_CODE_SUCCESS){ 3025 big_sync->state_vars.next_bis++; 3026 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3027 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3028 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3029 } else { 3030 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3031 } 3032 } else { 3033 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3034 big_sync->state_vars.status = status; 3035 } 3036 return; 3037 } 3038 } 3039 // Lookup CIS via active group operation 3040 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3041 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3042 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3043 3044 // lookup CIS by state 3045 btstack_linked_list_iterator_t it; 3046 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3047 while (btstack_linked_list_iterator_has_next(&it)){ 3048 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3049 handle = iso_stream->cis_handle; 3050 bool emit_cis_created = false; 3051 switch (iso_stream->state){ 3052 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3053 if (status != ERROR_CODE_SUCCESS){ 3054 emit_cis_created = true; 3055 break; 3056 } 3057 if (iso_stream->max_sdu_c_to_p > 0){ 3058 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3059 } else { 3060 emit_cis_created = true; 3061 } 3062 break; 3063 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3064 emit_cis_created = true; 3065 break; 3066 default: 3067 break; 3068 } 3069 if (emit_cis_created){ 3070 hci_cis_handle_created(iso_stream, status); 3071 } 3072 } 3073 } else { 3074 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3075 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3076 if (cig != NULL) { 3077 // emit cis created if all ISO Paths have been created 3078 // assume we are central 3079 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3080 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3081 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3082 // if outgoing has been setup, or incoming was setup but outgoing not required 3083 if ((cis_direction == 1) || (outgoing_needed == false)){ 3084 // lookup iso stream by cig/cis 3085 while (btstack_linked_list_iterator_has_next(&it)) { 3086 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3087 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3088 hci_cis_handle_created(iso_stream, status); 3089 } 3090 } 3091 } 3092 // next state 3093 cig->state_vars.next_cis++; 3094 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3095 } 3096 } 3097 } 3098 break; 3099 } 3100 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3101 // lookup BIG by state 3102 btstack_linked_list_iterator_t it; 3103 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3104 while (btstack_linked_list_iterator_has_next(&it)) { 3105 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3106 uint8_t big_handle = big_sync->big_handle; 3107 switch (big_sync->state){ 3108 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3109 btstack_linked_list_iterator_remove(&it); 3110 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3111 return; 3112 default: 3113 btstack_linked_list_iterator_remove(&it); 3114 hci_emit_big_sync_stopped(big_handle); 3115 return; 3116 } 3117 } 3118 break; 3119 } 3120 #endif 3121 #endif 3122 default: 3123 break; 3124 } 3125 } 3126 3127 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3128 UNUSED(size); 3129 3130 // get num cmd packets - limit to 1 to reduce complexity 3131 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3132 3133 // get opcode and command status 3134 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3135 3136 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3137 uint8_t status = hci_event_command_status_get_status(packet); 3138 #endif 3139 3140 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3141 bd_addr_type_t addr_type; 3142 bd_addr_t addr; 3143 #endif 3144 3145 switch (opcode){ 3146 #ifdef ENABLE_CLASSIC 3147 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3148 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3149 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3150 #endif 3151 #ifdef ENABLE_LE_CENTRAL 3152 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3153 #endif 3154 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3155 addr_type = hci_stack->outgoing_addr_type; 3156 memcpy(addr, hci_stack->outgoing_addr, 6); 3157 3158 // reset outgoing address info 3159 memset(hci_stack->outgoing_addr, 0, 6); 3160 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3161 3162 // on error 3163 if (status != ERROR_CODE_SUCCESS){ 3164 #ifdef ENABLE_LE_CENTRAL 3165 if (hci_is_le_connection_type(addr_type)){ 3166 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3167 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3168 } 3169 #endif 3170 // error => outgoing connection failed 3171 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3172 if (conn != NULL){ 3173 hci_handle_connection_failed(conn, status); 3174 } 3175 } 3176 break; 3177 #endif 3178 #ifdef ENABLE_CLASSIC 3179 case HCI_OPCODE_HCI_INQUIRY: 3180 if (status == ERROR_CODE_SUCCESS) { 3181 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3182 } else { 3183 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3184 } 3185 break; 3186 #endif 3187 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3188 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3189 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3190 if (status == ERROR_CODE_SUCCESS){ 3191 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3192 } else { 3193 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3194 } 3195 break; 3196 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3197 default: 3198 break; 3199 } 3200 } 3201 3202 #ifdef ENABLE_BLE 3203 static void event_handle_le_connection_complete(const uint8_t * packet){ 3204 bd_addr_t addr; 3205 bd_addr_type_t addr_type; 3206 hci_connection_t * conn; 3207 3208 // read fields 3209 uint8_t status = packet[3]; 3210 hci_role_t role = (hci_role_t) packet[6]; 3211 3212 // support different connection complete events 3213 uint16_t conn_interval; 3214 switch (packet[2]){ 3215 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3216 conn_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3217 break; 3218 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3219 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3220 conn_interval = hci_subevent_le_enhanced_connection_complete_v1_get_conn_interval(packet); 3221 break; 3222 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3223 conn_interval = hci_subevent_le_enhanced_connection_complete_v2_get_conn_interval(packet); 3224 break; 3225 #endif 3226 default: 3227 btstack_unreachable(); 3228 return; 3229 } 3230 3231 // Connection management 3232 reverse_bd_addr(&packet[8], addr); 3233 addr_type = (bd_addr_type_t)packet[7]; 3234 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3235 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3236 3237 #ifdef ENABLE_LE_CENTRAL 3238 // handle error: error is reported only to the initiator -> outgoing connection 3239 if (status){ 3240 3241 // handle cancelled outgoing connection 3242 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3243 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3244 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3245 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3246 // reset state 3247 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3248 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3249 // get outgoing connection conn struct for direct connect 3250 conn = gap_get_outgoing_connection(); 3251 } 3252 3253 // outgoing le connection establishment is done 3254 if (conn){ 3255 // remove entry 3256 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3257 btstack_memory_hci_connection_free( conn ); 3258 } 3259 return; 3260 } 3261 #endif 3262 3263 // on success, both hosts receive connection complete event 3264 if (role == HCI_ROLE_MASTER){ 3265 #ifdef ENABLE_LE_CENTRAL 3266 // if we're master on an le connection, it was an outgoing connection and we're done with it 3267 // note: no hci_connection_t object exists yet for connect with whitelist 3268 if (hci_is_le_connection_type(addr_type)){ 3269 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3270 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3271 } 3272 #endif 3273 } else { 3274 #ifdef ENABLE_LE_PERIPHERAL 3275 // if we're slave, it was an incoming connection, advertisements have stopped 3276 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3277 #endif 3278 } 3279 3280 // LE connections are auto-accepted, so just create a connection if there isn't one already 3281 if (!conn){ 3282 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3283 } 3284 3285 // no memory, sorry. 3286 if (!conn){ 3287 return; 3288 } 3289 3290 conn->state = OPEN; 3291 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3292 conn->le_connection_interval = conn_interval; 3293 3294 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3295 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3296 3297 #ifdef ENABLE_LE_PERIPHERAL 3298 if (role == HCI_ROLE_SLAVE){ 3299 hci_update_advertisements_enabled_for_current_roles(); 3300 } 3301 #endif 3302 3303 // init unenhanced att bearer mtu 3304 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3305 conn->att_connection.mtu_exchanged = false; 3306 3307 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3308 3309 // restart timer 3310 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3311 // btstack_run_loop_add_timer(&conn->timeout); 3312 3313 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3314 3315 hci_emit_nr_connections_changed(); 3316 } 3317 #endif 3318 3319 #ifdef ENABLE_CLASSIC 3320 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){ 3321 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3322 // LEVEL_4 is tested by l2cap 3323 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3324 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3325 if (level >= LEVEL_3){ 3326 // MITM not possible without keyboard or display 3327 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3328 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3329 3330 // MITM possible if one side has keyboard and the other has keyboard or display 3331 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3332 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3333 3334 // MITM not possible if one side has only display and other side has no keyboard 3335 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3336 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3337 } 3338 // LEVEL 2 requires SSP, which is a given 3339 return true; 3340 } 3341 3342 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3343 // get requested security level 3344 gap_security_level_t requested_security_level = conn->requested_security_level; 3345 if (hci_stack->gap_secure_connections_only_mode){ 3346 requested_security_level = LEVEL_4; 3347 } 3348 3349 // assess security: LEVEL 4 requires SC 3350 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3351 if ((requested_security_level == LEVEL_4) && 3352 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3353 !hci_remote_sc_enabled(conn)){ 3354 log_info("Level 4 required, but SC not supported -> abort"); 3355 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3356 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3357 return; 3358 } 3359 3360 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3361 // - GAP/MOD/NBON/BV-02-C 3362 // - GAP/DM/NBON/BV-01-C 3363 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3364 switch (conn->io_cap_response_auth_req){ 3365 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3366 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3367 if (hci_stack->bondable == false){ 3368 log_info("Dedicated vs. non-bondable -> abort"); 3369 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3370 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3371 return; 3372 } 3373 default: 3374 break; 3375 } 3376 } 3377 3378 // assess security based on io capabilities 3379 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3380 // responder: fully validate io caps of both sides as well as OOB data 3381 bool security_possible = false; 3382 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3383 3384 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3385 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3386 // so we merge the OOB data availability 3387 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3388 if (conn->classic_oob_c_192 != NULL){ 3389 have_oob_data |= 1; 3390 } 3391 if (conn->classic_oob_c_256 != NULL){ 3392 have_oob_data |= 2; 3393 } 3394 // for up to Level 3, either P-192 as well as P-256 will do 3395 // 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 3396 // if remote does not SC, we should not receive P-256 data either 3397 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3398 security_possible = true; 3399 } 3400 // for Level 4, P-256 is needed 3401 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3402 security_possible = true; 3403 } 3404 #endif 3405 3406 if (security_possible == false){ 3407 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3408 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3409 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3410 return; 3411 } 3412 } else { 3413 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3414 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3415 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3416 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3417 log_info("Level 3+ required, but no input/output -> abort"); 3418 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3419 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3420 return; 3421 } 3422 #endif 3423 #endif 3424 } 3425 3426 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3427 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3428 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3429 } else { 3430 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3431 } 3432 #endif 3433 } 3434 3435 #endif 3436 3437 static void event_handler(uint8_t *packet, uint16_t size){ 3438 3439 uint16_t event_length = packet[1]; 3440 3441 // assert packet is complete 3442 if (size != (event_length + 2u)){ 3443 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3444 return; 3445 } 3446 3447 hci_con_handle_t handle; 3448 hci_connection_t * conn; 3449 int i; 3450 3451 #ifdef ENABLE_CLASSIC 3452 hci_link_type_t link_type; 3453 bd_addr_t addr; 3454 bd_addr_type_t addr_type; 3455 #endif 3456 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3457 hci_iso_stream_t * iso_stream; 3458 le_audio_big_t * big; 3459 le_audio_big_sync_t * big_sync; 3460 #endif 3461 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3462 btstack_linked_list_iterator_t it; 3463 #endif 3464 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3465 uint8_t advertising_handle; 3466 #endif 3467 3468 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3469 3470 switch (hci_event_packet_get_type(packet)) { 3471 3472 case HCI_EVENT_COMMAND_COMPLETE: 3473 handle_command_complete_event(packet, size); 3474 break; 3475 3476 case HCI_EVENT_COMMAND_STATUS: 3477 handle_command_status_event(packet, size); 3478 break; 3479 3480 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3481 if (size < 3) return; 3482 uint16_t num_handles = packet[2]; 3483 if (size != (3u + num_handles * 4u)) return; 3484 #ifdef ENABLE_CLASSIC 3485 bool notify_sco = false; 3486 #endif 3487 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3488 bool notify_iso = false; 3489 #endif 3490 uint16_t offset = 3; 3491 for (i=0; i<num_handles;i++){ 3492 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3493 offset += 2u; 3494 uint16_t num_packets = little_endian_read_16(packet, offset); 3495 offset += 2u; 3496 3497 conn = hci_connection_for_handle(handle); 3498 if (conn != NULL) { 3499 3500 if (conn->num_packets_sent >= num_packets) { 3501 conn->num_packets_sent -= num_packets; 3502 } else { 3503 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3504 conn->num_packets_sent = 0; 3505 } 3506 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3507 #ifdef ENABLE_CLASSIC 3508 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3509 notify_sco = true; 3510 } 3511 #endif 3512 } 3513 3514 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3515 hci_controller_dump_packets(); 3516 #endif 3517 3518 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3519 if (conn == NULL){ 3520 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3521 if (iso_stream != NULL){ 3522 if (iso_stream->num_packets_sent >= num_packets) { 3523 iso_stream->num_packets_sent -= num_packets; 3524 } else { 3525 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3526 iso_stream->num_packets_sent = 0; 3527 } 3528 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3529 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3530 if (big != NULL){ 3531 big->num_completed_timestamp_current_valid = true; 3532 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3533 } 3534 } 3535 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3536 num_packets, handle, iso_stream->num_packets_sent); 3537 notify_iso = true; 3538 } 3539 } 3540 #endif 3541 } 3542 3543 #ifdef ENABLE_CLASSIC 3544 if (notify_sco){ 3545 hci_notify_if_sco_can_send_now(); 3546 } 3547 #endif 3548 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3549 if (notify_iso){ 3550 hci_iso_notify_can_send_now(); 3551 } 3552 #endif 3553 break; 3554 } 3555 3556 #ifdef ENABLE_CLASSIC 3557 case HCI_EVENT_FLUSH_OCCURRED: 3558 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3559 handle = hci_event_flush_occurred_get_handle(packet); 3560 conn = hci_connection_for_handle(handle); 3561 if (conn) { 3562 log_info("Flush occurred, disconnect 0x%04x", handle); 3563 conn->state = SEND_DISCONNECT; 3564 } 3565 break; 3566 3567 case HCI_EVENT_INQUIRY_COMPLETE: 3568 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3569 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3570 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3571 hci_emit_event(event, sizeof(event), 1); 3572 } 3573 break; 3574 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3575 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3576 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3577 } 3578 break; 3579 case HCI_EVENT_CONNECTION_REQUEST: 3580 reverse_bd_addr(&packet[2], addr); 3581 link_type = (hci_link_type_t) packet[11]; 3582 3583 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3584 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3585 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3586 bd_addr_copy(hci_stack->decline_addr, addr); 3587 break; 3588 } 3589 3590 if (hci_stack->gap_classic_accept_callback != NULL){ 3591 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3592 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3593 bd_addr_copy(hci_stack->decline_addr, addr); 3594 break; 3595 } 3596 } 3597 3598 // TODO: eval COD 8-10 3599 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3600 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3601 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3602 if (!conn) { 3603 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3604 } 3605 if (!conn) { 3606 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3607 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3608 bd_addr_copy(hci_stack->decline_addr, addr); 3609 hci_run(); 3610 // avoid event to higher layer 3611 return; 3612 } 3613 conn->state = RECEIVED_CONNECTION_REQUEST; 3614 // store info about eSCO 3615 if (link_type == HCI_LINK_TYPE_ESCO){ 3616 conn->remote_supported_features[0] |= 1; 3617 } 3618 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3619 if (addr_type == BD_ADDR_TYPE_SCO){ 3620 hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3621 btstack_assert(acl_conn != NULL); 3622 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3623 } 3624 hci_run(); 3625 break; 3626 3627 case HCI_EVENT_CONNECTION_COMPLETE: 3628 // Connection management 3629 reverse_bd_addr(&packet[5], addr); 3630 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3631 addr_type = BD_ADDR_TYPE_ACL; 3632 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3633 if (conn) { 3634 switch (conn->state){ 3635 // expected states 3636 case ACCEPTED_CONNECTION_REQUEST: 3637 case SENT_CREATE_CONNECTION: 3638 break; 3639 // unexpected state -> ignore 3640 default: 3641 // don't forward event to app 3642 return; 3643 } 3644 if (!packet[2]){ 3645 conn->state = OPEN; 3646 conn->con_handle = little_endian_read_16(packet, 3); 3647 3648 // trigger write supervision timeout if we're master 3649 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3650 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3651 } 3652 3653 // trigger write automatic flush timeout 3654 if (hci_stack->automatic_flush_timeout != 0){ 3655 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3656 } 3657 3658 // restart timer 3659 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3660 btstack_run_loop_add_timer(&conn->timeout); 3661 3662 // trigger remote features for dedicated bonding 3663 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3664 hci_trigger_remote_features_for_connection(conn); 3665 } 3666 3667 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3668 3669 hci_emit_nr_connections_changed(); 3670 } else { 3671 // connection failed 3672 hci_handle_connection_failed(conn, packet[2]); 3673 } 3674 } 3675 break; 3676 3677 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3678 reverse_bd_addr(&packet[5], addr); 3679 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3680 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3681 btstack_assert(conn != NULL); 3682 3683 if (packet[2] != ERROR_CODE_SUCCESS){ 3684 // connection failed, remove entry 3685 hci_handle_connection_failed(conn, packet[2]); 3686 break; 3687 } 3688 3689 conn->state = OPEN; 3690 conn->con_handle = little_endian_read_16(packet, 3); 3691 3692 // update sco payload length for eSCO connections 3693 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3694 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3695 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3696 } 3697 3698 #ifdef ENABLE_SCO_OVER_HCI 3699 // update SCO 3700 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3701 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3702 } 3703 // trigger can send now 3704 if (hci_have_usb_transport()){ 3705 hci_stack->sco_can_send_now = true; 3706 } 3707 3708 // setup implict sco flow control 3709 conn->sco_tx_ready = 0; 3710 conn->sco_tx_active = 0; 3711 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3712 3713 #endif 3714 #ifdef HAVE_SCO_TRANSPORT 3715 // configure sco transport 3716 if (hci_stack->sco_transport != NULL){ 3717 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3718 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3719 } 3720 #endif 3721 break; 3722 3723 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3724 handle = little_endian_read_16(packet, 3); 3725 conn = hci_connection_for_handle(handle); 3726 if (!conn) break; 3727 if (!packet[2]){ 3728 const uint8_t * features = &packet[5]; 3729 hci_handle_remote_features_page_0(conn, features); 3730 3731 // read extended features if possible 3732 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3733 && ((conn->remote_supported_features[0] & 2) != 0)) { 3734 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3735 break; 3736 } 3737 } 3738 hci_handle_remote_features_received(conn); 3739 break; 3740 3741 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3742 handle = little_endian_read_16(packet, 3); 3743 conn = hci_connection_for_handle(handle); 3744 if (!conn) break; 3745 // status = ok, page = 1 3746 if (!packet[2]) { 3747 uint8_t page_number = packet[5]; 3748 uint8_t maximum_page_number = packet[6]; 3749 const uint8_t * features = &packet[7]; 3750 bool done = false; 3751 switch (page_number){ 3752 case 1: 3753 hci_handle_remote_features_page_1(conn, features); 3754 if (maximum_page_number >= 2){ 3755 // get Secure Connections (Controller) from Page 2 if available 3756 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3757 } else { 3758 // otherwise, assume SC (Controller) == SC (Host) 3759 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3760 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3761 } 3762 done = true; 3763 } 3764 break; 3765 case 2: 3766 hci_handle_remote_features_page_2(conn, features); 3767 done = true; 3768 break; 3769 default: 3770 break; 3771 } 3772 if (!done) break; 3773 } 3774 hci_handle_remote_features_received(conn); 3775 break; 3776 3777 case HCI_EVENT_LINK_KEY_REQUEST: 3778 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3779 hci_event_link_key_request_get_bd_addr(packet, addr); 3780 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3781 if (!conn) break; 3782 3783 // lookup link key in db if not cached 3784 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3785 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3786 } 3787 3788 // response sent by hci_run() 3789 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3790 #endif 3791 break; 3792 3793 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3794 hci_event_link_key_request_get_bd_addr(packet, addr); 3795 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3796 if (!conn) break; 3797 3798 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3799 3800 // CVE-2020-26555: ignore NULL link key 3801 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3802 if (btstack_is_null(&packet[8], 16)) break; 3803 3804 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3805 // Change Connection Encryption keeps link key type 3806 if (link_key_type != CHANGED_COMBINATION_KEY){ 3807 conn->link_key_type = link_key_type; 3808 } 3809 3810 // cache link key. link keys stored in little-endian format for legacy reasons 3811 memcpy(&conn->link_key, &packet[8], 16); 3812 3813 // only store link key: 3814 // - if bondable enabled 3815 if (hci_stack->bondable == false) break; 3816 // - if security level sufficient 3817 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3818 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3819 break; 3820 } 3821 3822 case HCI_EVENT_PIN_CODE_REQUEST: 3823 hci_event_pin_code_request_get_bd_addr(packet, addr); 3824 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3825 if (!conn) break; 3826 3827 hci_pairing_started(conn, false); 3828 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3829 if (!hci_stack->bondable ){ 3830 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3831 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3832 hci_run(); 3833 return; 3834 } 3835 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3836 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3837 log_info("Level 4 required, but SC not supported -> abort"); 3838 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3839 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3840 hci_run(); 3841 return; 3842 } 3843 break; 3844 3845 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3846 hci_event_io_capability_response_get_bd_addr(packet, addr); 3847 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3848 if (!conn) break; 3849 3850 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3851 hci_pairing_started(conn, true); 3852 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3853 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3854 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3855 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3856 #endif 3857 break; 3858 3859 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3860 hci_event_io_capability_response_get_bd_addr(packet, addr); 3861 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3862 if (!conn) break; 3863 3864 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3865 hci_connection_timestamp(conn); 3866 hci_pairing_started(conn, true); 3867 break; 3868 3869 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3870 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3871 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3872 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3873 if (!conn) break; 3874 3875 hci_connection_timestamp(conn); 3876 3877 hci_pairing_started(conn, true); 3878 3879 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3880 break; 3881 #endif 3882 3883 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3884 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3885 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3886 if (!conn) break; 3887 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3888 if (hci_stack->ssp_auto_accept){ 3889 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3890 }; 3891 } else { 3892 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3893 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3894 // don't forward event to app 3895 hci_run(); 3896 return; 3897 } 3898 break; 3899 3900 case HCI_EVENT_USER_PASSKEY_REQUEST: 3901 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3902 if (hci_stack->ssp_auto_accept){ 3903 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3904 }; 3905 break; 3906 3907 case HCI_EVENT_MODE_CHANGE: 3908 handle = hci_event_mode_change_get_handle(packet); 3909 conn = hci_connection_for_handle(handle); 3910 if (!conn) break; 3911 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3912 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3913 break; 3914 #endif 3915 3916 case HCI_EVENT_ENCRYPTION_CHANGE: 3917 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3918 handle = hci_event_encryption_change_get_connection_handle(packet); 3919 conn = hci_connection_for_handle(handle); 3920 if (!conn) break; 3921 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 3922 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3923 if (encryption_enabled){ 3924 if (hci_is_le_connection(conn)){ 3925 // For LE, we accept connection as encrypted 3926 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3927 } 3928 #ifdef ENABLE_CLASSIC 3929 else { 3930 3931 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3932 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3933 bool connected_uses_aes_ccm = encryption_enabled == 2; 3934 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3935 #ifdef ENABLE_TESTING_SUPPORT 3936 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 3937 // - GAP/SEC/SEM/BI-31-C 3938 // - GAP/SEC/SEM/BI-32-C 3939 // - GAP/SEC/SEM/BI-33-C 3940 3941 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 3942 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 3943 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 3944 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 3945 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 3946 } 3947 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 3948 conn->link_key_type, new_link_key_type); 3949 conn->link_key_type = new_link_key_type; 3950 #else 3951 log_info("SC during pairing, but only E0 now -> abort"); 3952 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3953 break; 3954 #endif 3955 } 3956 3957 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3958 if (connected_uses_aes_ccm){ 3959 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3960 } 3961 3962 #ifdef ENABLE_TESTING_SUPPORT 3963 // work around for issue with PTS dongle 3964 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3965 #endif 3966 // validate encryption key size 3967 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3968 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3969 // already got encryption key size 3970 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3971 } else { 3972 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3973 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3974 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3975 } else { 3976 // if not, pretend everything is perfect 3977 hci_handle_read_encryption_key_size_complete(conn, 16); 3978 } 3979 } 3980 } 3981 #endif 3982 } else { 3983 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3984 } 3985 } else { 3986 #ifdef ENABLE_CLASSIC 3987 if (!hci_is_le_connection(conn)){ 3988 uint8_t status = hci_event_encryption_change_get_status(packet); 3989 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3990 conn->bonding_flags &= ~BONDING_DEDICATED; 3991 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3992 conn->bonding_status = status; 3993 } 3994 // trigger security update -> level 0 3995 hci_handle_mutual_authentication_completed(conn); 3996 } 3997 #endif 3998 } 3999 4000 break; 4001 4002 #ifdef ENABLE_CLASSIC 4003 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4004 handle = hci_event_authentication_complete_get_connection_handle(packet); 4005 conn = hci_connection_for_handle(handle); 4006 if (!conn) break; 4007 4008 // clear authentication active flag 4009 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4010 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4011 4012 // authenticated only if auth status == 0 4013 if (hci_event_authentication_complete_get_status(packet) == 0){ 4014 // authenticated 4015 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4016 4017 // If not already encrypted, start encryption 4018 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4019 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4020 break; 4021 } 4022 } 4023 4024 // emit updated security level (will be 0 if not authenticated) 4025 hci_handle_mutual_authentication_completed(conn); 4026 break; 4027 4028 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4029 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4030 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4031 if (!conn) break; 4032 4033 // treat successfully paired connection as authenticated 4034 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4035 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4036 } 4037 4038 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4039 break; 4040 #endif 4041 4042 // HCI_EVENT_DISCONNECTION_COMPLETE 4043 // has been split, to first notify stack before shutting connection down 4044 // see end of function, too. 4045 case HCI_EVENT_DISCONNECTION_COMPLETE: 4046 if (packet[2]) break; // status != 0 4047 handle = little_endian_read_16(packet, 3); 4048 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4049 if (hci_stack->acl_fragmentation_total_size > 0u) { 4050 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4051 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4052 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4053 hci_stack->acl_fragmentation_total_size = 0; 4054 hci_stack->acl_fragmentation_pos = 0; 4055 if (release_buffer){ 4056 hci_release_packet_buffer(); 4057 } 4058 } 4059 } 4060 4061 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4062 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4063 if (hci_stack->iso_fragmentation_total_size > 0u) { 4064 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4065 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4066 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4067 hci_stack->iso_fragmentation_total_size = 0; 4068 hci_stack->iso_fragmentation_pos = 0; 4069 if (release_buffer){ 4070 hci_release_packet_buffer(); 4071 } 4072 } 4073 } 4074 4075 // finalize iso stream for CIS handle 4076 iso_stream = hci_iso_stream_for_con_handle(handle); 4077 if (iso_stream != NULL){ 4078 hci_iso_stream_finalize(iso_stream); 4079 break; 4080 } 4081 4082 // finalize iso stream(s) for ACL handle 4083 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4084 while (btstack_linked_list_iterator_has_next(&it)){ 4085 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4086 if (iso_stream->acl_handle == handle ) { 4087 hci_iso_stream_finalize(iso_stream); 4088 } 4089 } 4090 #endif 4091 4092 conn = hci_connection_for_handle(handle); 4093 if (!conn) break; 4094 #ifdef ENABLE_CLASSIC 4095 // pairing failed if it was ongoing 4096 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4097 #endif 4098 4099 // emit dedicatd bonding event 4100 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4101 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4102 } 4103 4104 // mark connection for shutdown, stop timers, reset state 4105 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4106 hci_connection_stop_timer(conn); 4107 hci_connection_init(conn); 4108 4109 #ifdef ENABLE_BLE 4110 #ifdef ENABLE_LE_PERIPHERAL 4111 // re-enable advertisements for le connections if active 4112 if (hci_is_le_connection(conn)){ 4113 hci_update_advertisements_enabled_for_current_roles(); 4114 } 4115 #endif 4116 #endif 4117 break; 4118 4119 case HCI_EVENT_HARDWARE_ERROR: 4120 log_error("Hardware Error: 0x%02x", packet[2]); 4121 if (hci_stack->hardware_error_callback){ 4122 (*hci_stack->hardware_error_callback)(packet[2]); 4123 } else { 4124 // if no special requests, just reboot stack 4125 hci_power_control_off(); 4126 hci_power_control_on(); 4127 } 4128 break; 4129 4130 #ifdef ENABLE_CLASSIC 4131 case HCI_EVENT_ROLE_CHANGE: 4132 if (packet[2]) break; // status != 0 4133 reverse_bd_addr(&packet[3], addr); 4134 addr_type = BD_ADDR_TYPE_ACL; 4135 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4136 if (!conn) break; 4137 conn->role = (hci_role_t) packet[9]; 4138 break; 4139 #endif 4140 4141 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4142 // release packet buffer only for asynchronous transport and if there are not further fragments 4143 if (hci_transport_synchronous()) { 4144 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4145 return; // instead of break: to avoid re-entering hci_run() 4146 } 4147 hci_stack->acl_fragmentation_tx_active = 0; 4148 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4149 hci_stack->iso_fragmentation_tx_active = 0; 4150 if (hci_stack->iso_fragmentation_total_size) break; 4151 #endif 4152 if (hci_stack->acl_fragmentation_total_size) break; 4153 hci_release_packet_buffer(); 4154 4155 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4156 hci_iso_notify_can_send_now(); 4157 #endif 4158 // L2CAP receives this event via the hci_emit_event below 4159 4160 #ifdef ENABLE_CLASSIC 4161 // For SCO, we do the can_send_now_check here 4162 hci_notify_if_sco_can_send_now(); 4163 #endif 4164 break; 4165 4166 #ifdef ENABLE_CLASSIC 4167 case HCI_EVENT_SCO_CAN_SEND_NOW: 4168 // For SCO, we do the can_send_now_check here 4169 hci_stack->sco_can_send_now = true; 4170 hci_notify_if_sco_can_send_now(); 4171 return; 4172 4173 // explode inquriy results for easier consumption 4174 case HCI_EVENT_INQUIRY_RESULT: 4175 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4176 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4177 gap_inquiry_explode(packet, size); 4178 break; 4179 #endif 4180 4181 #ifdef ENABLE_BLE 4182 case HCI_EVENT_LE_META: 4183 switch (packet[2]){ 4184 #ifdef ENABLE_LE_CENTRAL 4185 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4186 if (!hci_stack->le_scanning_enabled) break; 4187 le_handle_advertisement_report(packet, size); 4188 break; 4189 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4190 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4191 if (!hci_stack->le_scanning_enabled) break; 4192 le_handle_extended_advertisement_report(packet, size); 4193 break; 4194 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4195 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4196 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4197 break; 4198 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4199 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4200 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4201 while (btstack_linked_list_iterator_has_next(&it)) { 4202 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4203 if (advertising_set->advertising_handle == advertising_handle){ 4204 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4205 } 4206 } 4207 break; 4208 #endif 4209 #endif 4210 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4211 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4212 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4213 event_handle_le_connection_complete(packet); 4214 break; 4215 4216 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4217 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4218 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4219 conn = hci_connection_for_handle(handle); 4220 if (!conn) break; 4221 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4222 break; 4223 4224 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4225 // connection 4226 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4227 conn = hci_connection_for_handle(handle); 4228 if (conn) { 4229 // read arguments 4230 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4231 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4232 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4233 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4234 4235 // validate against current connection parameter range 4236 le_connection_parameter_range_t existing_range; 4237 gap_get_connection_parameter_range(&existing_range); 4238 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4239 if (update_parameter){ 4240 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4241 conn->le_conn_interval_min = le_conn_interval_min; 4242 conn->le_conn_interval_max = le_conn_interval_max; 4243 conn->le_conn_latency = le_conn_latency; 4244 conn->le_supervision_timeout = le_supervision_timeout; 4245 } else { 4246 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4247 } 4248 } 4249 break; 4250 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4251 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4252 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4253 conn = hci_connection_for_handle(handle); 4254 if (conn) { 4255 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4256 } 4257 break; 4258 #endif 4259 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4260 case HCI_SUBEVENT_LE_CIS_REQUEST: 4261 // incoming CIS request, allocate iso stream object and cache metadata 4262 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4263 hci_subevent_le_cis_request_get_cig_id(packet), 4264 hci_subevent_le_cis_request_get_cis_id(packet)); 4265 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4266 if (iso_stream != NULL){ 4267 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4268 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4269 } 4270 break; 4271 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4272 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4273 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4274 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4275 iso_stream = hci_iso_stream_for_con_handle(handle); 4276 btstack_assert(iso_stream != NULL); 4277 // track SDU 4278 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4279 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4280 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4281 // CIS Accept by Peripheral 4282 if (status == ERROR_CODE_SUCCESS){ 4283 if (iso_stream->max_sdu_p_to_c > 0){ 4284 // we're peripheral and we will send data 4285 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4286 } else { 4287 // we're peripheral and we will only receive data 4288 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4289 } 4290 } else { 4291 hci_cis_handle_created(iso_stream, status); 4292 } 4293 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4294 } else { 4295 // CIG Setup by Central 4296 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4297 btstack_assert(cig != NULL); 4298 // update iso stream state 4299 if (status == ERROR_CODE_SUCCESS){ 4300 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4301 } else { 4302 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4303 } 4304 // update cig state 4305 uint8_t i; 4306 for (i=0;i<cig->num_cis;i++){ 4307 if (cig->cis_con_handles[i] == handle){ 4308 cig->cis_setup_active[i] = false; 4309 if (status == ERROR_CODE_SUCCESS){ 4310 cig->cis_established[i] = true; 4311 } else { 4312 hci_cis_handle_created(iso_stream, status); 4313 } 4314 } 4315 } 4316 4317 // trigger iso path setup if complete 4318 bool cis_setup_active = false; 4319 for (i=0;i<cig->num_cis;i++){ 4320 cis_setup_active |= cig->cis_setup_active[i]; 4321 } 4322 if (cis_setup_active == false){ 4323 cig->state_vars.next_cis = 0; 4324 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4325 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4326 } 4327 } 4328 } 4329 break; 4330 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4331 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4332 big = hci_big_for_handle(packet[4]); 4333 if (big != NULL){ 4334 uint8_t status = packet[3]; 4335 if (status == ERROR_CODE_SUCCESS){ 4336 // store bis_con_handles and trigger iso path setup 4337 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4338 uint8_t i; 4339 for (i=0;i<num_bis;i++){ 4340 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4341 big->bis_con_handles[i] = bis_handle; 4342 // assign bis handle 4343 btstack_linked_list_iterator_t it; 4344 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4345 while (btstack_linked_list_iterator_has_next(&it)){ 4346 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4347 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4348 (iso_stream->group_id == big->big_handle)){ 4349 iso_stream->cis_handle = bis_handle; 4350 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4351 break; 4352 } 4353 } 4354 } 4355 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4356 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4357 big->state_vars.next_bis = 0; 4358 } 4359 } else { 4360 // create BIG failed or has been stopped by us 4361 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4362 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4363 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4364 hci_emit_big_created(big, status); 4365 } else { 4366 hci_emit_big_terminated(big); 4367 } 4368 } 4369 } 4370 break; 4371 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4372 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4373 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4374 if (big != NULL){ 4375 // finalize associated ISO streams 4376 btstack_linked_list_iterator_t it; 4377 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4378 while (btstack_linked_list_iterator_has_next(&it)){ 4379 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4380 if (iso_stream->group_id == big->big_handle){ 4381 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4382 btstack_linked_list_iterator_remove(&it); 4383 btstack_memory_hci_iso_stream_free(iso_stream); 4384 } 4385 } 4386 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4387 switch (big->state){ 4388 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4389 hci_emit_big_created(big, big->state_vars.status); 4390 break; 4391 default: 4392 hci_emit_big_terminated(big); 4393 break; 4394 } 4395 } 4396 break; 4397 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4398 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4399 big_sync = hci_big_sync_for_handle(packet[4]); 4400 if (big_sync != NULL){ 4401 uint8_t status = packet[3]; 4402 uint8_t big_handle = packet[4]; 4403 if (status == ERROR_CODE_SUCCESS){ 4404 // store bis_con_handles and trigger iso path setup 4405 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4406 uint8_t i; 4407 for (i=0;i<num_bis;i++){ 4408 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4409 } 4410 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4411 // trigger iso path setup 4412 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4413 big_sync->state_vars.next_bis = 0; 4414 } 4415 } else { 4416 // create BIG Sync failed or has been stopped by us 4417 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4418 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4419 hci_emit_big_sync_created(big_sync, status); 4420 } else { 4421 hci_emit_big_sync_stopped(big_handle); 4422 } 4423 } 4424 } 4425 break; 4426 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4427 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4428 big_sync = hci_big_sync_for_handle(packet[4]); 4429 if (big_sync != NULL){ 4430 uint8_t big_handle = packet[4]; 4431 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4432 hci_emit_big_sync_stopped(big_handle); 4433 } 4434 break; 4435 #endif 4436 default: 4437 break; 4438 } 4439 break; 4440 #endif 4441 case HCI_EVENT_VENDOR_SPECIFIC: 4442 // Vendor specific commands often create vendor specific event instead of num completed packets 4443 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4444 switch (hci_stack->manufacturer){ 4445 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4446 hci_stack->num_cmd_packets = 1; 4447 break; 4448 default: 4449 break; 4450 } 4451 break; 4452 default: 4453 break; 4454 } 4455 4456 handle_event_for_current_stack_state(packet, size); 4457 4458 // notify upper stack 4459 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4460 4461 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4462 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4463 handle = little_endian_read_16(packet, 3); 4464 hci_connection_t * aConn = hci_connection_for_handle(handle); 4465 // discard connection if app did not trigger a reconnect in the event handler 4466 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4467 hci_shutdown_connection(aConn); 4468 } 4469 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4470 hci_controller_dump_packets(); 4471 #endif 4472 } 4473 4474 // execute main loop 4475 hci_run(); 4476 } 4477 4478 #ifdef ENABLE_CLASSIC 4479 4480 static void sco_handler(uint8_t * packet, uint16_t size){ 4481 // lookup connection struct 4482 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4483 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4484 if (!conn) return; 4485 4486 #ifdef ENABLE_SCO_OVER_HCI 4487 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4488 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4489 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4490 packet[2] = 0x3c; 4491 memmove(&packet[3], &packet[23], 63); 4492 size = 63; 4493 } 4494 } 4495 4496 if (hci_have_usb_transport()){ 4497 // Nothing to do 4498 } else { 4499 // 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); 4500 if (hci_stack->synchronous_flow_control_enabled == 0){ 4501 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4502 uint16_t max_sco_packets = btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4503 if (conn->sco_tx_active == 0){ 4504 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4505 conn->sco_tx_active = 1; 4506 conn->sco_tx_ready = max_sco_packets; 4507 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4508 hci_notify_if_sco_can_send_now(); 4509 } 4510 } else { 4511 if (conn->sco_tx_ready < max_sco_packets){ 4512 conn->sco_tx_ready++; 4513 } 4514 hci_notify_if_sco_can_send_now(); 4515 } 4516 } 4517 } 4518 #endif 4519 4520 // deliver to app 4521 if (hci_stack->sco_packet_handler) { 4522 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4523 } 4524 4525 #ifdef HAVE_SCO_TRANSPORT 4526 // We can send one packet for each received packet 4527 conn->sco_tx_ready++; 4528 hci_notify_if_sco_can_send_now(); 4529 #endif 4530 4531 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4532 conn->num_packets_completed++; 4533 hci_stack->host_completed_packets = 1; 4534 hci_run(); 4535 #endif 4536 } 4537 #endif 4538 4539 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4540 hci_dump_packet(packet_type, 1, packet, size); 4541 switch (packet_type) { 4542 case HCI_EVENT_PACKET: 4543 event_handler(packet, size); 4544 break; 4545 case HCI_ACL_DATA_PACKET: 4546 acl_handler(packet, size); 4547 break; 4548 #ifdef ENABLE_CLASSIC 4549 case HCI_SCO_DATA_PACKET: 4550 sco_handler(packet, size); 4551 break; 4552 #endif 4553 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4554 case HCI_ISO_DATA_PACKET: 4555 hci_iso_packet_handler(packet, size); 4556 break; 4557 #endif 4558 default: 4559 break; 4560 } 4561 } 4562 4563 /** 4564 * @brief Add event packet handler. 4565 */ 4566 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4567 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4568 } 4569 4570 /** 4571 * @brief Remove event packet handler. 4572 */ 4573 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4574 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4575 } 4576 4577 /** Register HCI packet handlers */ 4578 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4579 hci_stack->acl_packet_handler = handler; 4580 } 4581 4582 #ifdef ENABLE_CLASSIC 4583 /** 4584 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4585 */ 4586 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4587 hci_stack->sco_packet_handler = handler; 4588 } 4589 #endif 4590 4591 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4592 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4593 hci_stack->iso_packet_handler = handler; 4594 } 4595 #endif 4596 4597 static void hci_state_reset(void){ 4598 // no connections yet 4599 hci_stack->connections = NULL; 4600 4601 // keep discoverable/connectable as this has been requested by the client(s) 4602 // hci_stack->discoverable = 0; 4603 // hci_stack->connectable = 0; 4604 // hci_stack->bondable = 1; 4605 // hci_stack->own_addr_type = 0; 4606 4607 // buffer is free 4608 hci_stack->hci_packet_buffer_reserved = false; 4609 4610 // no pending cmds 4611 hci_stack->decline_reason = 0; 4612 4613 hci_stack->secure_connections_active = false; 4614 4615 #ifdef ENABLE_CLASSIC 4616 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4617 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4618 4619 hci_stack->gap_tasks_classic = 4620 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4621 GAP_TASK_SET_CLASS_OF_DEVICE | 4622 GAP_TASK_SET_LOCAL_NAME | 4623 GAP_TASK_SET_EIR_DATA | 4624 GAP_TASK_WRITE_SCAN_ENABLE | 4625 GAP_TASK_WRITE_PAGE_TIMEOUT; 4626 #endif 4627 4628 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4629 hci_stack->classic_read_local_oob_data = false; 4630 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4631 #endif 4632 4633 // LE 4634 #ifdef ENABLE_BLE 4635 memset(hci_stack->le_random_address, 0, 6); 4636 hci_stack->le_random_address_set = 0; 4637 #endif 4638 #ifdef ENABLE_LE_CENTRAL 4639 hci_stack->le_scanning_active = false; 4640 hci_stack->le_scanning_param_update = true; 4641 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4642 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4643 hci_stack->le_whitelist_capacity = 0; 4644 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4645 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4646 #endif 4647 #endif 4648 #ifdef ENABLE_LE_PERIPHERAL 4649 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4650 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4651 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4652 } 4653 if (hci_stack->le_advertisements_data != NULL){ 4654 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4655 } 4656 #endif 4657 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4658 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4659 #endif 4660 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4661 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4662 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4663 #endif 4664 } 4665 4666 #ifdef ENABLE_CLASSIC 4667 /** 4668 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4669 */ 4670 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4671 // store and open remote device db 4672 hci_stack->link_key_db = link_key_db; 4673 if (hci_stack->link_key_db) { 4674 hci_stack->link_key_db->open(); 4675 } 4676 } 4677 #endif 4678 4679 void hci_init(const hci_transport_t *transport, const void *config){ 4680 4681 #ifdef HAVE_MALLOC 4682 if (!hci_stack) { 4683 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4684 } 4685 #else 4686 hci_stack = &hci_stack_static; 4687 #endif 4688 memset(hci_stack, 0, sizeof(hci_stack_t)); 4689 4690 // reference to use transport layer implementation 4691 hci_stack->hci_transport = transport; 4692 4693 // reference to used config 4694 hci_stack->config = config; 4695 4696 // setup pointer for outgoing packet buffer 4697 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4698 4699 // max acl payload size defined in config.h 4700 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4701 4702 // register packet handlers with transport 4703 transport->register_packet_handler(&packet_handler); 4704 4705 hci_stack->state = HCI_STATE_OFF; 4706 4707 // class of device 4708 hci_stack->class_of_device = 0x007a020c; // Smartphone 4709 4710 // bondable by default 4711 hci_stack->bondable = 1; 4712 4713 #ifdef ENABLE_CLASSIC 4714 // classic name 4715 hci_stack->local_name = default_classic_name; 4716 4717 // Master slave policy 4718 hci_stack->master_slave_policy = 1; 4719 4720 // Allow Role Switch 4721 hci_stack->allow_role_switch = 1; 4722 4723 // Default / minimum security level = 2 4724 hci_stack->gap_security_level = LEVEL_2; 4725 4726 // Default Security Mode 4 4727 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4728 4729 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4730 hci_stack->gap_required_encyrption_key_size = 7; 4731 4732 // Link Supervision Timeout 4733 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4734 4735 #endif 4736 4737 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4738 hci_stack->ssp_enable = 1; 4739 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4740 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4741 hci_stack->ssp_auto_accept = 1; 4742 4743 // Secure Connections: enable (requires support from Controller) 4744 hci_stack->secure_connections_enable = true; 4745 4746 // voice setting - signed 16 bit pcm data with CVSD over the air 4747 hci_stack->sco_voice_setting = 0x60; 4748 4749 #ifdef ENABLE_BLE 4750 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4751 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4752 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4753 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4754 hci_stack->le_connection_latency = 4; // 4 4755 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4756 hci_stack->le_minimum_ce_length = 0; // 0 ms 4757 hci_stack->le_maximum_ce_length = 0; // 0 ms 4758 #endif 4759 4760 #ifdef ENABLE_LE_CENTRAL 4761 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4762 4763 // default LE Scanning 4764 hci_stack->le_scan_type = 0x01; // active 4765 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4766 hci_stack->le_scan_window = 0x30; // 30 ms 4767 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4768 #endif 4769 4770 #ifdef ENABLE_LE_PERIPHERAL 4771 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4772 4773 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4774 hci_stack->le_advertisements_interval_min = 0x0800; 4775 hci_stack->le_advertisements_interval_max = 0x0800; 4776 hci_stack->le_advertisements_type = 0; 4777 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4778 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4779 hci_stack->le_advertisements_channel_map = 0x07; 4780 hci_stack->le_advertisements_filter_policy = 0; 4781 #endif 4782 4783 // connection parameter range used to answer connection parameter update requests in l2cap 4784 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4785 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4786 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4787 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4788 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4789 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4790 4791 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4792 hci_stack->iso_packets_to_queue = 1; 4793 #endif 4794 4795 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4796 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4797 #endif 4798 4799 hci_state_reset(); 4800 } 4801 4802 void hci_deinit(void){ 4803 btstack_run_loop_remove_timer(&hci_stack->timeout); 4804 #ifdef HAVE_MALLOC 4805 if (hci_stack) { 4806 free(hci_stack); 4807 } 4808 #endif 4809 hci_stack = NULL; 4810 4811 #ifdef ENABLE_CLASSIC 4812 disable_l2cap_timeouts = 0; 4813 #endif 4814 } 4815 4816 /** 4817 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4818 */ 4819 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4820 hci_stack->chipset = chipset_driver; 4821 4822 // reset chipset driver - init is also called on power_up 4823 if (hci_stack->chipset && hci_stack->chipset->init){ 4824 hci_stack->chipset->init(hci_stack->config); 4825 } 4826 } 4827 4828 void hci_enable_custom_pre_init(void){ 4829 hci_stack->chipset_pre_init = true; 4830 } 4831 4832 /** 4833 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4834 */ 4835 void hci_set_control(const btstack_control_t *hardware_control){ 4836 // references to used control implementation 4837 hci_stack->control = hardware_control; 4838 // init with transport config 4839 hardware_control->init(hci_stack->config); 4840 } 4841 4842 static void hci_discard_connections(void){ 4843 btstack_linked_list_iterator_t it; 4844 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4845 while (btstack_linked_list_iterator_has_next(&it)){ 4846 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4847 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4848 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4849 hci_shutdown_connection(connection); 4850 } 4851 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4852 while (hci_stack->iso_streams != NULL){ 4853 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4854 } 4855 #endif 4856 } 4857 4858 void hci_close(void){ 4859 4860 #ifdef ENABLE_CLASSIC 4861 // close remote device db 4862 if (hci_stack->link_key_db) { 4863 hci_stack->link_key_db->close(); 4864 } 4865 #endif 4866 4867 hci_discard_connections(); 4868 4869 hci_power_control(HCI_POWER_OFF); 4870 4871 #ifdef HAVE_MALLOC 4872 free(hci_stack); 4873 #endif 4874 hci_stack = NULL; 4875 } 4876 4877 #ifdef HAVE_SCO_TRANSPORT 4878 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4879 hci_stack->sco_transport = sco_transport; 4880 sco_transport->register_packet_handler(&packet_handler); 4881 } 4882 #endif 4883 4884 #ifdef ENABLE_CLASSIC 4885 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4886 // validate ranage and set 4887 if (encryption_key_size < 7) return; 4888 if (encryption_key_size > 16) return; 4889 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4890 } 4891 4892 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4893 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4894 hci_stack->gap_security_mode = security_mode; 4895 return ERROR_CODE_SUCCESS; 4896 } else { 4897 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4898 } 4899 } 4900 4901 gap_security_mode_t gap_get_security_mode(void){ 4902 return hci_stack->gap_security_mode; 4903 } 4904 4905 void gap_set_security_level(gap_security_level_t security_level){ 4906 hci_stack->gap_security_level = security_level; 4907 } 4908 4909 gap_security_level_t gap_get_security_level(void){ 4910 if (hci_stack->gap_secure_connections_only_mode){ 4911 return LEVEL_4; 4912 } 4913 return hci_stack->gap_security_level; 4914 } 4915 4916 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4917 hci_stack->gap_minimal_service_security_level = security_level; 4918 } 4919 4920 void gap_set_secure_connections_only_mode(bool enable){ 4921 hci_stack->gap_secure_connections_only_mode = enable; 4922 } 4923 4924 bool gap_get_secure_connections_only_mode(void){ 4925 return hci_stack->gap_secure_connections_only_mode; 4926 } 4927 #endif 4928 4929 #ifdef ENABLE_CLASSIC 4930 void gap_set_class_of_device(uint32_t class_of_device){ 4931 hci_stack->class_of_device = class_of_device; 4932 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4933 hci_run(); 4934 } 4935 4936 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4937 hci_stack->default_link_policy_settings = default_link_policy_settings; 4938 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4939 hci_run(); 4940 } 4941 4942 void gap_set_allow_role_switch(bool allow_role_switch){ 4943 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4944 } 4945 4946 uint8_t hci_get_allow_role_switch(void){ 4947 return hci_stack->allow_role_switch; 4948 } 4949 4950 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4951 hci_stack->link_supervision_timeout = link_supervision_timeout; 4952 } 4953 4954 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4955 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4956 } 4957 4958 uint16_t hci_automatic_flush_timeout(void){ 4959 return hci_stack->automatic_flush_timeout; 4960 } 4961 4962 void hci_disable_l2cap_timeout_check(void){ 4963 disable_l2cap_timeouts = 1; 4964 } 4965 #endif 4966 4967 #ifndef HAVE_HOST_CONTROLLER_API 4968 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4969 void hci_set_bd_addr(bd_addr_t addr){ 4970 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4971 hci_stack->custom_bd_addr_set = 1; 4972 } 4973 #endif 4974 4975 // State-Module-Driver overview 4976 // state module low-level 4977 // HCI_STATE_OFF off close 4978 // HCI_STATE_INITIALIZING, on open 4979 // HCI_STATE_WORKING, on open 4980 // HCI_STATE_HALTING, on open 4981 // HCI_STATE_SLEEPING, off/sleep close 4982 // HCI_STATE_FALLING_ASLEEP on open 4983 4984 static int hci_power_control_on(void){ 4985 4986 // power on 4987 int err = 0; 4988 if (hci_stack->control && hci_stack->control->on){ 4989 err = (*hci_stack->control->on)(); 4990 } 4991 if (err){ 4992 log_error( "POWER_ON failed"); 4993 hci_emit_hci_open_failed(); 4994 return err; 4995 } 4996 4997 // int chipset driver 4998 if (hci_stack->chipset && hci_stack->chipset->init){ 4999 hci_stack->chipset->init(hci_stack->config); 5000 } 5001 5002 // init transport 5003 if (hci_stack->hci_transport->init){ 5004 hci_stack->hci_transport->init(hci_stack->config); 5005 } 5006 5007 // open transport 5008 err = hci_stack->hci_transport->open(); 5009 if (err){ 5010 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5011 if (hci_stack->control && hci_stack->control->off){ 5012 (*hci_stack->control->off)(); 5013 } 5014 hci_emit_hci_open_failed(); 5015 return err; 5016 } 5017 return 0; 5018 } 5019 5020 static void hci_power_control_off(void){ 5021 5022 log_info("hci_power_control_off"); 5023 5024 // close low-level device 5025 hci_stack->hci_transport->close(); 5026 5027 log_info("hci_power_control_off - hci_transport closed"); 5028 5029 // power off 5030 if (hci_stack->control && hci_stack->control->off){ 5031 (*hci_stack->control->off)(); 5032 } 5033 5034 log_info("hci_power_control_off - control closed"); 5035 5036 hci_stack->state = HCI_STATE_OFF; 5037 } 5038 5039 static void hci_power_control_sleep(void){ 5040 5041 log_info("hci_power_control_sleep"); 5042 5043 #if 0 5044 // don't close serial port during sleep 5045 5046 // close low-level device 5047 hci_stack->hci_transport->close(hci_stack->config); 5048 #endif 5049 5050 // sleep mode 5051 if (hci_stack->control && hci_stack->control->sleep){ 5052 (*hci_stack->control->sleep)(); 5053 } 5054 5055 hci_stack->state = HCI_STATE_SLEEPING; 5056 } 5057 5058 static int hci_power_control_wake(void){ 5059 5060 log_info("hci_power_control_wake"); 5061 5062 // wake on 5063 if (hci_stack->control && hci_stack->control->wake){ 5064 (*hci_stack->control->wake)(); 5065 } 5066 5067 #if 0 5068 // open low-level device 5069 int err = hci_stack->hci_transport->open(hci_stack->config); 5070 if (err){ 5071 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5072 if (hci_stack->control && hci_stack->control->off){ 5073 (*hci_stack->control->off)(); 5074 } 5075 hci_emit_hci_open_failed(); 5076 return err; 5077 } 5078 #endif 5079 5080 return 0; 5081 } 5082 5083 static void hci_power_enter_initializing_state(void){ 5084 // set up state machine 5085 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5086 hci_stack->hci_packet_buffer_reserved = false; 5087 hci_stack->state = HCI_STATE_INITIALIZING; 5088 5089 #ifndef HAVE_HOST_CONTROLLER_API 5090 if (hci_stack->chipset_pre_init) { 5091 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5092 } else 5093 #endif 5094 { 5095 hci_stack->substate = HCI_INIT_SEND_RESET; 5096 } 5097 } 5098 5099 static void hci_power_enter_halting_state(void){ 5100 #ifdef ENABLE_BLE 5101 // drop entries scheduled for removal, mark others for re-adding 5102 btstack_linked_list_iterator_t it; 5103 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5104 while (btstack_linked_list_iterator_has_next(&it)){ 5105 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5106 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5107 btstack_linked_list_iterator_remove(&it); 5108 btstack_memory_whitelist_entry_free(entry); 5109 } else { 5110 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5111 } 5112 } 5113 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5114 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5115 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5116 while (btstack_linked_list_iterator_has_next(&it)){ 5117 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5118 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5119 btstack_linked_list_iterator_remove(&it); 5120 btstack_memory_periodic_advertiser_list_entry_free(entry); 5121 } else { 5122 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5123 continue; 5124 } 5125 } 5126 #endif 5127 #endif 5128 // see hci_run 5129 hci_stack->state = HCI_STATE_HALTING; 5130 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5131 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5132 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5133 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5134 btstack_run_loop_add_timer(&hci_stack->timeout); 5135 } 5136 5137 // returns error 5138 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5139 int err; 5140 switch (power_mode){ 5141 case HCI_POWER_ON: 5142 err = hci_power_control_on(); 5143 if (err != 0) { 5144 log_error("hci_power_control_on() error %d", err); 5145 return err; 5146 } 5147 hci_power_enter_initializing_state(); 5148 break; 5149 case HCI_POWER_OFF: 5150 // do nothing 5151 break; 5152 case HCI_POWER_SLEEP: 5153 // do nothing (with SLEEP == OFF) 5154 break; 5155 default: 5156 btstack_assert(false); 5157 break; 5158 } 5159 return ERROR_CODE_SUCCESS; 5160 } 5161 5162 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5163 switch (power_mode){ 5164 case HCI_POWER_ON: 5165 // do nothing 5166 break; 5167 case HCI_POWER_OFF: 5168 // no connections yet, just turn it off 5169 hci_power_control_off(); 5170 break; 5171 case HCI_POWER_SLEEP: 5172 // no connections yet, just turn it off 5173 hci_power_control_sleep(); 5174 break; 5175 default: 5176 btstack_assert(false); 5177 break; 5178 } 5179 return ERROR_CODE_SUCCESS; 5180 } 5181 5182 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5183 switch (power_mode){ 5184 case HCI_POWER_ON: 5185 // do nothing 5186 break; 5187 case HCI_POWER_OFF: 5188 hci_power_enter_halting_state(); 5189 break; 5190 case HCI_POWER_SLEEP: 5191 // see hci_run 5192 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5193 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5194 break; 5195 default: 5196 btstack_assert(false); 5197 break; 5198 } 5199 return ERROR_CODE_SUCCESS; 5200 } 5201 5202 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5203 switch (power_mode){ 5204 case HCI_POWER_ON: 5205 hci_power_enter_initializing_state(); 5206 break; 5207 case HCI_POWER_OFF: 5208 // do nothing 5209 break; 5210 case HCI_POWER_SLEEP: 5211 // see hci_run 5212 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5213 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5214 break; 5215 default: 5216 btstack_assert(false); 5217 break; 5218 } 5219 return ERROR_CODE_SUCCESS; 5220 } 5221 5222 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5223 switch (power_mode){ 5224 case HCI_POWER_ON: 5225 hci_power_enter_initializing_state(); 5226 break; 5227 case HCI_POWER_OFF: 5228 hci_power_enter_halting_state(); 5229 break; 5230 case HCI_POWER_SLEEP: 5231 // do nothing 5232 break; 5233 default: 5234 btstack_assert(false); 5235 break; 5236 } 5237 return ERROR_CODE_SUCCESS; 5238 } 5239 5240 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5241 int err; 5242 switch (power_mode){ 5243 case HCI_POWER_ON: 5244 err = hci_power_control_wake(); 5245 if (err) return err; 5246 hci_power_enter_initializing_state(); 5247 break; 5248 case HCI_POWER_OFF: 5249 hci_power_enter_halting_state(); 5250 break; 5251 case HCI_POWER_SLEEP: 5252 // do nothing 5253 break; 5254 default: 5255 btstack_assert(false); 5256 break; 5257 } 5258 return ERROR_CODE_SUCCESS; 5259 } 5260 5261 int hci_power_control(HCI_POWER_MODE power_mode){ 5262 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5263 btstack_run_loop_remove_timer(&hci_stack->timeout); 5264 int err = 0; 5265 switch (hci_stack->state){ 5266 case HCI_STATE_OFF: 5267 err = hci_power_control_state_off(power_mode); 5268 break; 5269 case HCI_STATE_INITIALIZING: 5270 err = hci_power_control_state_initializing(power_mode); 5271 break; 5272 case HCI_STATE_WORKING: 5273 err = hci_power_control_state_working(power_mode); 5274 break; 5275 case HCI_STATE_HALTING: 5276 err = hci_power_control_state_halting(power_mode); 5277 break; 5278 case HCI_STATE_FALLING_ASLEEP: 5279 err = hci_power_control_state_falling_asleep(power_mode); 5280 break; 5281 case HCI_STATE_SLEEPING: 5282 err = hci_power_control_state_sleeping(power_mode); 5283 break; 5284 default: 5285 btstack_assert(false); 5286 break; 5287 } 5288 if (err != 0){ 5289 return err; 5290 } 5291 5292 // create internal event 5293 hci_emit_state(); 5294 5295 // trigger next/first action 5296 hci_run(); 5297 5298 return 0; 5299 } 5300 5301 5302 static void hci_halting_run(void) { 5303 5304 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5305 5306 hci_connection_t *connection; 5307 #ifdef ENABLE_BLE 5308 #ifdef ENABLE_LE_PERIPHERAL 5309 bool stop_advertismenets; 5310 #endif 5311 #endif 5312 5313 switch (hci_stack->substate) { 5314 case HCI_HALTING_CLASSIC_STOP: 5315 #ifdef ENABLE_CLASSIC 5316 if (!hci_can_send_command_packet_now()) return; 5317 5318 if (hci_stack->connectable || hci_stack->discoverable){ 5319 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5320 hci_send_cmd(&hci_write_scan_enable, 0); 5321 return; 5322 } 5323 #endif 5324 /* fall through */ 5325 5326 case HCI_HALTING_LE_ADV_STOP: 5327 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5328 5329 #ifdef ENABLE_BLE 5330 #ifdef ENABLE_LE_PERIPHERAL 5331 if (!hci_can_send_command_packet_now()) return; 5332 5333 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5334 5335 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5336 if (hci_extended_advertising_supported()){ 5337 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5338 btstack_linked_list_iterator_t it; 5339 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5340 // stop all periodic advertisements and check if an extended set is active 5341 while (btstack_linked_list_iterator_has_next(&it)){ 5342 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5343 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5344 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5345 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5346 return; 5347 } 5348 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5349 stop_advertismenets = true; 5350 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5351 } 5352 } 5353 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5354 if (stop_advertismenets){ 5355 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5356 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5357 return; 5358 } 5359 } else 5360 #else /* ENABLE_LE_PERIPHERAL */ 5361 { 5362 if (stop_advertismenets) { 5363 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5364 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5365 return; 5366 } 5367 } 5368 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5369 #endif /* ENABLE_LE_PERIPHERAL */ 5370 #endif /* ENABLE_BLE */ 5371 5372 /* fall through */ 5373 5374 case HCI_HALTING_LE_SCAN_STOP: 5375 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5376 if (!hci_can_send_command_packet_now()) return; 5377 5378 #ifdef ENABLE_BLE 5379 #ifdef ENABLE_LE_CENTRAL 5380 if (hci_stack->le_scanning_active){ 5381 hci_le_scan_stop(); 5382 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5383 return; 5384 } 5385 #endif 5386 #endif 5387 5388 /* fall through */ 5389 5390 case HCI_HALTING_DISCONNECT_ALL: 5391 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5392 if (!hci_can_send_command_packet_now()) return; 5393 5394 // close all open connections 5395 connection = (hci_connection_t *) hci_stack->connections; 5396 if (connection) { 5397 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5398 5399 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5400 5401 // check state 5402 switch(connection->state) { 5403 case SENT_DISCONNECT: 5404 case RECEIVED_DISCONNECTION_COMPLETE: 5405 // wait until connection is gone 5406 return; 5407 default: 5408 break; 5409 } 5410 5411 // finally, send the disconnect command 5412 connection->state = SENT_DISCONNECT; 5413 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5414 return; 5415 } 5416 5417 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5418 // stop BIGs and BIG Syncs 5419 if (hci_stack->le_audio_bigs != NULL){ 5420 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5421 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5422 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5423 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5424 return; 5425 } 5426 if (hci_stack->le_audio_big_syncs != NULL){ 5427 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5428 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5429 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5430 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5431 return; 5432 } 5433 #endif 5434 5435 btstack_run_loop_remove_timer(&hci_stack->timeout); 5436 5437 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5438 log_info("HCI_STATE_HALTING: wait 50 ms"); 5439 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5440 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5441 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5442 btstack_run_loop_add_timer(&hci_stack->timeout); 5443 break; 5444 5445 case HCI_HALTING_W4_CLOSE_TIMER: 5446 // keep waiting 5447 break; 5448 5449 case HCI_HALTING_CLOSE: 5450 // close left over connections (that had not been properly closed before) 5451 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5452 hci_discard_connections(); 5453 5454 log_info("HCI_STATE_HALTING, calling off"); 5455 5456 // switch mode 5457 hci_power_control_off(); 5458 5459 log_info("HCI_STATE_HALTING, emitting state"); 5460 hci_emit_state(); 5461 log_info("HCI_STATE_HALTING, done"); 5462 break; 5463 5464 default: 5465 break; 5466 } 5467 }; 5468 5469 static void hci_falling_asleep_run(void){ 5470 hci_connection_t * connection; 5471 switch(hci_stack->substate) { 5472 case HCI_FALLING_ASLEEP_DISCONNECT: 5473 log_info("HCI_STATE_FALLING_ASLEEP"); 5474 // close all open connections 5475 connection = (hci_connection_t *) hci_stack->connections; 5476 if (connection){ 5477 5478 // send disconnect 5479 if (!hci_can_send_command_packet_now()) return; 5480 5481 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5482 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5483 5484 // send disconnected event right away - causes higher layer connections to get closed, too. 5485 hci_shutdown_connection(connection); 5486 return; 5487 } 5488 5489 if (hci_classic_supported()){ 5490 // disable page and inquiry scan 5491 if (!hci_can_send_command_packet_now()) return; 5492 5493 log_info("HCI_STATE_HALTING, disabling inq scans"); 5494 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5495 5496 // continue in next sub state 5497 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5498 break; 5499 } 5500 5501 /* fall through */ 5502 5503 case HCI_FALLING_ASLEEP_COMPLETE: 5504 log_info("HCI_STATE_HALTING, calling sleep"); 5505 // switch mode 5506 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5507 hci_emit_state(); 5508 break; 5509 5510 default: 5511 break; 5512 } 5513 } 5514 5515 #ifdef ENABLE_CLASSIC 5516 5517 static void hci_update_scan_enable(void){ 5518 // 2 = page scan, 1 = inq scan 5519 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5520 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5521 hci_run(); 5522 } 5523 5524 void gap_discoverable_control(uint8_t enable){ 5525 if (enable) enable = 1; // normalize argument 5526 5527 if (hci_stack->discoverable == enable){ 5528 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5529 return; 5530 } 5531 5532 hci_stack->discoverable = enable; 5533 hci_update_scan_enable(); 5534 } 5535 5536 void gap_connectable_control(uint8_t enable){ 5537 if (enable) enable = 1; // normalize argument 5538 5539 // don't emit event 5540 if (hci_stack->connectable == enable) return; 5541 5542 hci_stack->connectable = enable; 5543 hci_update_scan_enable(); 5544 } 5545 #endif 5546 5547 void gap_local_bd_addr(bd_addr_t address_buffer){ 5548 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5549 } 5550 5551 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5552 static void hci_host_num_completed_packets(void){ 5553 5554 // create packet manually as arrays are not supported and num_commands should not get reduced 5555 hci_reserve_packet_buffer(); 5556 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5557 5558 uint16_t size = 0; 5559 uint16_t num_handles = 0; 5560 packet[size++] = 0x35; 5561 packet[size++] = 0x0c; 5562 size++; // skip param len 5563 size++; // skip num handles 5564 5565 // add { handle, packets } entries 5566 btstack_linked_item_t * it; 5567 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5568 hci_connection_t * connection = (hci_connection_t *) it; 5569 if (connection->num_packets_completed){ 5570 little_endian_store_16(packet, size, connection->con_handle); 5571 size += 2; 5572 little_endian_store_16(packet, size, connection->num_packets_completed); 5573 size += 2; 5574 // 5575 num_handles++; 5576 connection->num_packets_completed = 0; 5577 } 5578 } 5579 5580 packet[2] = size - 3; 5581 packet[3] = num_handles; 5582 5583 hci_stack->host_completed_packets = 0; 5584 5585 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5586 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5587 5588 // release packet buffer for synchronous transport implementations 5589 if (hci_transport_synchronous()){ 5590 hci_release_packet_buffer(); 5591 hci_emit_transport_packet_sent(); 5592 } 5593 } 5594 #endif 5595 5596 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5597 UNUSED(ds); 5598 hci_stack->substate = HCI_HALTING_CLOSE; 5599 hci_halting_run(); 5600 } 5601 5602 static bool hci_run_acl_fragments(void){ 5603 if (hci_stack->acl_fragmentation_total_size > 0u) { 5604 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5605 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5606 if (connection) { 5607 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5608 hci_send_acl_packet_fragments(connection); 5609 return true; 5610 } 5611 } else { 5612 // connection gone -> discard further fragments 5613 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5614 hci_stack->acl_fragmentation_total_size = 0; 5615 hci_stack->acl_fragmentation_pos = 0; 5616 } 5617 } 5618 return false; 5619 } 5620 5621 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5622 static bool hci_run_iso_fragments(void){ 5623 if (hci_stack->iso_fragmentation_total_size > 0u) { 5624 // TODO: flow control 5625 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5626 hci_send_iso_packet_fragments(); 5627 return true; 5628 } 5629 } 5630 return false; 5631 } 5632 #endif 5633 5634 #ifdef ENABLE_CLASSIC 5635 5636 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5637 static bool hci_classic_operation_active(void) { 5638 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5639 return true; 5640 } 5641 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5642 return true; 5643 } 5644 btstack_linked_item_t * it; 5645 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5646 hci_connection_t *connection = (hci_connection_t *) it; 5647 switch (connection->state) { 5648 case SENT_CREATE_CONNECTION: 5649 case SENT_CANCEL_CONNECTION: 5650 case SENT_DISCONNECT: 5651 return true; 5652 default: 5653 break; 5654 } 5655 } 5656 return false; 5657 } 5658 #endif 5659 5660 static bool hci_run_general_gap_classic(void){ 5661 5662 // assert stack is working and classic is active 5663 if (hci_classic_supported() == false) return false; 5664 if (hci_stack->state != HCI_STATE_WORKING) return false; 5665 5666 // decline incoming connections 5667 if (hci_stack->decline_reason){ 5668 uint8_t reason = hci_stack->decline_reason; 5669 hci_stack->decline_reason = 0; 5670 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5671 return true; 5672 } 5673 5674 if (hci_stack->gap_tasks_classic != 0){ 5675 hci_run_gap_tasks_classic(); 5676 return true; 5677 } 5678 5679 // start/stop inquiry 5680 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5681 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5682 if (hci_classic_operation_active() == false) 5683 #endif 5684 { 5685 uint8_t duration = hci_stack->inquiry_state; 5686 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5687 if (hci_stack->inquiry_max_period_length != 0){ 5688 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); 5689 } else { 5690 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5691 } 5692 return true; 5693 } 5694 } 5695 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5696 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5697 hci_send_cmd(&hci_inquiry_cancel); 5698 return true; 5699 } 5700 5701 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5702 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5703 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5704 return true; 5705 } 5706 5707 // remote name request 5708 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5709 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5710 if (hci_classic_operation_active() == false) 5711 #endif 5712 { 5713 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5714 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5715 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5716 return true; 5717 } 5718 } 5719 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5720 // Local OOB data 5721 if (hci_stack->classic_read_local_oob_data){ 5722 hci_stack->classic_read_local_oob_data = false; 5723 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5724 hci_send_cmd(&hci_read_local_extended_oob_data); 5725 } else { 5726 hci_send_cmd(&hci_read_local_oob_data); 5727 } 5728 } 5729 #endif 5730 // pairing 5731 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5732 uint8_t state = hci_stack->gap_pairing_state; 5733 uint8_t pin_code[16]; 5734 switch (state){ 5735 case GAP_PAIRING_STATE_SEND_PIN: 5736 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5737 memset(pin_code, 0, 16); 5738 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5739 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5740 break; 5741 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5742 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5743 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5744 break; 5745 case GAP_PAIRING_STATE_SEND_PASSKEY: 5746 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5747 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5748 break; 5749 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5750 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5751 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5752 break; 5753 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5754 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5755 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5756 break; 5757 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5758 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5759 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5760 break; 5761 default: 5762 break; 5763 } 5764 return true; 5765 } 5766 return false; 5767 } 5768 #endif 5769 5770 #ifdef ENABLE_BLE 5771 5772 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5773 static uint8_t hci_le_num_phys(uint8_t phys){ 5774 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5775 btstack_assert(phys); 5776 return num_bits_set[phys]; 5777 } 5778 #endif 5779 5780 #ifdef ENABLE_LE_CENTRAL 5781 static void hci_le_scan_stop(void){ 5782 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5783 if (hci_extended_advertising_supported()) { 5784 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5785 } else 5786 #endif 5787 { 5788 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5789 } 5790 } 5791 5792 static void 5793 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5794 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5795 if (hci_extended_advertising_supported()) { 5796 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5797 uint16_t le_connection_scan_interval[3]; 5798 uint16_t le_connection_scan_window[3]; 5799 uint16_t le_connection_interval_min[3]; 5800 uint16_t le_connection_interval_max[3]; 5801 uint16_t le_connection_latency[3]; 5802 uint16_t le_supervision_timeout[3]; 5803 uint16_t le_minimum_ce_length[3]; 5804 uint16_t le_maximum_ce_length[3]; 5805 5806 uint8_t i; 5807 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5808 for (i=0;i<num_phys;i++){ 5809 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5810 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5811 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5812 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5813 le_connection_latency[i] = hci_stack->le_connection_latency; 5814 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5815 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5816 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5817 } 5818 hci_send_cmd(&hci_le_extended_create_connection, 5819 initiator_filter_policy, 5820 hci_stack->le_connection_own_addr_type, // our addr type: 5821 address_type, // peer address type 5822 address, // peer bd addr 5823 hci_stack->le_connection_phys, // initiating PHY 5824 le_connection_scan_interval, // conn scan interval 5825 le_connection_scan_window, // conn scan windows 5826 le_connection_interval_min, // conn interval min 5827 le_connection_interval_max, // conn interval max 5828 le_connection_latency, // conn latency 5829 le_supervision_timeout, // conn latency 5830 le_minimum_ce_length, // min ce length 5831 le_maximum_ce_length // max ce length 5832 ); 5833 } else 5834 #endif 5835 { 5836 hci_send_cmd(&hci_le_create_connection, 5837 hci_stack->le_connection_scan_interval, // conn scan interval 5838 hci_stack->le_connection_scan_window, // conn scan windows 5839 initiator_filter_policy, // don't use whitelist 5840 address_type, // peer address type 5841 address, // peer bd addr 5842 hci_stack->le_connection_own_addr_type, // our addr type: 5843 hci_stack->le_connection_interval_min, // conn interval min 5844 hci_stack->le_connection_interval_max, // conn interval max 5845 hci_stack->le_connection_latency, // conn latency 5846 hci_stack->le_supervision_timeout, // conn latency 5847 hci_stack->le_minimum_ce_length, // min ce length 5848 hci_stack->le_maximum_ce_length // max ce length 5849 ); 5850 } 5851 } 5852 #endif 5853 5854 #ifdef ENABLE_LE_PERIPHERAL 5855 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5856 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5857 uint8_t operation = 0; 5858 if (pos == 0){ 5859 // first fragment or complete data 5860 operation |= 1; 5861 } 5862 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5863 // last fragment or complete data 5864 operation |= 2; 5865 } 5866 return operation; 5867 } 5868 #endif 5869 #endif 5870 5871 static bool hci_run_general_gap_le(void){ 5872 5873 btstack_linked_list_iterator_t lit; 5874 5875 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5876 if (hci_stack->le_resolvable_private_address_update_s > 0){ 5877 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 5878 hci_stack->le_resolvable_private_address_update_s = 0; 5879 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 5880 return true; 5881 } 5882 #endif 5883 5884 // Phase 1: collect what to stop 5885 5886 #ifdef ENABLE_LE_CENTRAL 5887 bool scanning_stop = false; 5888 bool connecting_stop = false; 5889 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5890 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5891 bool periodic_sync_stop = false; 5892 #endif 5893 #endif 5894 #endif 5895 5896 #ifdef ENABLE_LE_PERIPHERAL 5897 bool advertising_stop = false; 5898 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5899 le_advertising_set_t * advertising_stop_set = NULL; 5900 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5901 bool periodic_advertising_stop = false; 5902 #endif 5903 #endif 5904 #endif 5905 5906 // check if own address changes 5907 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 5908 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 5909 5910 // check if whitelist needs modification 5911 bool whitelist_modification_pending = false; 5912 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5913 while (btstack_linked_list_iterator_has_next(&lit)){ 5914 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5915 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5916 whitelist_modification_pending = true; 5917 break; 5918 } 5919 } 5920 5921 // check if resolving list needs modification 5922 bool resolving_list_modification_pending = false; 5923 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5924 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5925 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5926 resolving_list_modification_pending = true; 5927 } 5928 #endif 5929 5930 #ifdef ENABLE_LE_CENTRAL 5931 5932 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5933 // check if periodic advertiser list needs modification 5934 bool periodic_list_modification_pending = false; 5935 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5936 while (btstack_linked_list_iterator_has_next(&lit)){ 5937 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5938 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5939 periodic_list_modification_pending = true; 5940 break; 5941 } 5942 } 5943 #endif 5944 5945 // scanning control 5946 if (hci_stack->le_scanning_active) { 5947 // stop if: 5948 // - parameter change required 5949 // - it's disabled 5950 // - whitelist change required but used for scanning 5951 // - resolving list modified 5952 // - own address changes 5953 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5954 if ((hci_stack->le_scanning_param_update) || 5955 !hci_stack->le_scanning_enabled || 5956 (scanning_uses_whitelist && whitelist_modification_pending) || 5957 resolving_list_modification_pending || 5958 random_address_change){ 5959 5960 scanning_stop = true; 5961 } 5962 } 5963 5964 // connecting control 5965 bool connecting_with_whitelist; 5966 switch (hci_stack->le_connecting_state){ 5967 case LE_CONNECTING_DIRECT: 5968 case LE_CONNECTING_WHITELIST: 5969 // stop connecting if: 5970 // - connecting uses white and whitelist modification pending 5971 // - if it got disabled 5972 // - resolving list modified 5973 // - own address changes 5974 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5975 if ((connecting_with_whitelist && whitelist_modification_pending) || 5976 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5977 resolving_list_modification_pending || 5978 random_address_change) { 5979 5980 connecting_stop = true; 5981 } 5982 break; 5983 default: 5984 break; 5985 } 5986 5987 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5988 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5989 // periodic sync control 5990 bool sync_with_advertiser_list; 5991 switch(hci_stack->le_periodic_sync_state){ 5992 case LE_CONNECTING_DIRECT: 5993 case LE_CONNECTING_WHITELIST: 5994 // stop sync if: 5995 // - sync with advertiser list and advertiser list modification pending 5996 // - if it got disabled 5997 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5998 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5999 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6000 periodic_sync_stop = true; 6001 } 6002 break; 6003 default: 6004 break; 6005 } 6006 #endif 6007 #endif 6008 6009 #endif /* ENABLE_LE_CENTRAL */ 6010 6011 #ifdef ENABLE_LE_PERIPHERAL 6012 // le advertisement control 6013 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6014 // stop if: 6015 // - parameter change required 6016 // - random address used in advertising and changes 6017 // - it's disabled 6018 // - whitelist change required but used for advertisement filter policy 6019 // - resolving list modified 6020 // - own address changes 6021 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6022 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6023 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6024 if (advertising_change || 6025 (advertising_uses_random_address && random_address_change) || 6026 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6027 (advertising_uses_whitelist && whitelist_modification_pending) || 6028 resolving_list_modification_pending || 6029 random_address_change) { 6030 6031 advertising_stop = true; 6032 } 6033 } 6034 6035 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6036 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 6037 btstack_linked_list_iterator_t it; 6038 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6039 while (btstack_linked_list_iterator_has_next(&it)){ 6040 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6041 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6042 // stop if: 6043 // - parameter change required 6044 // - random address used in connectable advertising and changes 6045 // - it's disabled 6046 // - whitelist change required but used for advertisement filter policy 6047 // - resolving list modified 6048 // - own address changes 6049 // - advertisement set will be removed 6050 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6051 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6052 bool advertising_uses_random_address = 6053 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6054 advertising_connectable; 6055 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6056 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6057 bool advertising_set_random_address_change = 6058 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6059 bool advertising_set_will_be_removed = 6060 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6061 if (advertising_parameter_change || 6062 (advertising_uses_random_address && advertising_set_random_address_change) || 6063 (advertising_enabled == false) || 6064 (advertising_uses_whitelist && whitelist_modification_pending) || 6065 resolving_list_modification_pending || 6066 advertising_set_will_be_removed) { 6067 6068 advertising_stop = true; 6069 advertising_stop_set = advertising_set; 6070 break; 6071 } 6072 } 6073 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6074 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6075 // stop if: 6076 // - it's disabled 6077 // - parameter change required 6078 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6079 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6080 if ((periodic_enabled == false) || periodic_parameter_change){ 6081 periodic_advertising_stop = true; 6082 advertising_stop_set = advertising_set; 6083 } 6084 } 6085 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6086 } 6087 } 6088 #endif 6089 6090 #endif 6091 6092 6093 // Phase 2: stop everything that should be off during modifications 6094 6095 6096 // 2.1 Outgoing connection 6097 #ifdef ENABLE_LE_CENTRAL 6098 if (connecting_stop){ 6099 hci_send_cmd(&hci_le_create_connection_cancel); 6100 return true; 6101 } 6102 #endif 6103 6104 // 2.2 Scanning 6105 #ifdef ENABLE_LE_CENTRAL 6106 if (scanning_stop){ 6107 hci_stack->le_scanning_active = false; 6108 hci_le_scan_stop(); 6109 return true; 6110 } 6111 6112 // 2.3 Periodic Sync 6113 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6114 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6115 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6116 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6117 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6118 return true; 6119 } 6120 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6121 if (periodic_sync_stop){ 6122 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6123 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6124 return true; 6125 } 6126 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6127 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6128 #endif /* ENABLE_LE_CENTRAL */ 6129 6130 // 2.4 Advertising: legacy, extended, periodic 6131 #ifdef ENABLE_LE_PERIPHERAL 6132 if (advertising_stop){ 6133 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6134 if (hci_extended_advertising_supported()) { 6135 uint8_t advertising_stop_handle; 6136 if (advertising_stop_set != NULL){ 6137 advertising_stop_handle = advertising_stop_set->advertising_handle; 6138 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6139 } else { 6140 advertising_stop_handle = 0; 6141 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6142 } 6143 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6144 const uint16_t durations[] = { 0 }; 6145 const uint16_t max_events[] = { 0 }; 6146 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6147 } else 6148 #endif 6149 { 6150 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6151 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6152 } 6153 return true; 6154 } 6155 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6156 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6157 if (periodic_advertising_stop){ 6158 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6159 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6160 return true; 6161 } 6162 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6163 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6164 #endif /* ENABLE_LE_PERIPHERAL */ 6165 6166 6167 // Phase 3: modify 6168 6169 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6170 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6171 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6172 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6173 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6174 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6175 #endif 6176 return true; 6177 } 6178 6179 #ifdef ENABLE_LE_CENTRAL 6180 if (hci_stack->le_scanning_param_update){ 6181 hci_stack->le_scanning_param_update = false; 6182 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6183 if (hci_extended_advertising_supported()){ 6184 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6185 uint8_t scan_types[2]; 6186 uint16_t scan_intervals[2]; 6187 uint16_t scan_windows[2]; 6188 6189 uint8_t i; 6190 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6191 for (i=0;i<num_phys;i++){ 6192 scan_types[i] = hci_stack->le_scan_type; 6193 scan_intervals[i] = hci_stack->le_scan_interval; 6194 scan_windows[i] = hci_stack->le_scan_window; 6195 } 6196 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6197 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6198 } else 6199 #endif 6200 { 6201 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6202 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6203 } 6204 return true; 6205 } 6206 #endif 6207 6208 #ifdef ENABLE_LE_PERIPHERAL 6209 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6210 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6211 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6212 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6213 if (hci_extended_advertising_supported()){ 6214 // map advertisment type to advertising event properties 6215 uint16_t adv_event_properties = 0; 6216 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6217 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6218 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6219 } 6220 hci_stack->le_advertising_set_in_current_command = 0; 6221 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6222 0, 6223 adv_event_properties, 6224 hci_stack->le_advertisements_interval_min, 6225 hci_stack->le_advertisements_interval_max, 6226 hci_stack->le_advertisements_channel_map, 6227 hci_stack->le_advertisements_own_addr_type, 6228 hci_stack->le_advertisements_direct_address_type, 6229 hci_stack->le_advertisements_direct_address, 6230 hci_stack->le_advertisements_filter_policy, 6231 0x7f, // tx power: no preference 6232 0x01, // primary adv phy: LE 1M 6233 0, // secondary adv max skip 6234 0x01, // secondary adv phy 6235 0, // adv sid 6236 0 // scan request notification 6237 ); 6238 } else 6239 #endif 6240 { 6241 hci_send_cmd(&hci_le_set_advertising_parameters, 6242 hci_stack->le_advertisements_interval_min, 6243 hci_stack->le_advertisements_interval_max, 6244 hci_stack->le_advertisements_type, 6245 hci_stack->le_advertisements_own_addr_type, 6246 hci_stack->le_advertisements_direct_address_type, 6247 hci_stack->le_advertisements_direct_address, 6248 hci_stack->le_advertisements_channel_map, 6249 hci_stack->le_advertisements_filter_policy); 6250 } 6251 return true; 6252 } 6253 6254 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6255 // assumption: only set if extended advertising is supported 6256 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6257 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6258 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6259 return true; 6260 } 6261 #endif 6262 6263 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6264 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6265 uint8_t adv_data_clean[31]; 6266 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6267 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6268 hci_stack->le_advertisements_data_len); 6269 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6270 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6271 if (hci_extended_advertising_supported()){ 6272 hci_stack->le_advertising_set_in_current_command = 0; 6273 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6274 } else 6275 #endif 6276 { 6277 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6278 } 6279 return true; 6280 } 6281 6282 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6283 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6284 uint8_t scan_data_clean[31]; 6285 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6286 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6287 hci_stack->le_scan_response_data_len); 6288 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6289 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6290 if (hci_extended_advertising_supported()){ 6291 hci_stack->le_advertising_set_in_current_command = 0; 6292 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6293 } else 6294 #endif 6295 { 6296 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6297 } 6298 return true; 6299 } 6300 6301 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6302 if (hci_extended_advertising_supported()) { 6303 btstack_linked_list_iterator_t it; 6304 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6305 while (btstack_linked_list_iterator_has_next(&it)){ 6306 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6307 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6308 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6309 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6310 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6311 return true; 6312 } 6313 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6314 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6315 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6316 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6317 advertising_set->advertising_handle, 6318 advertising_set->extended_params.advertising_event_properties, 6319 advertising_set->extended_params.primary_advertising_interval_min, 6320 advertising_set->extended_params.primary_advertising_interval_max, 6321 advertising_set->extended_params.primary_advertising_channel_map, 6322 advertising_set->extended_params.own_address_type, 6323 advertising_set->extended_params.peer_address_type, 6324 advertising_set->extended_params.peer_address, 6325 advertising_set->extended_params.advertising_filter_policy, 6326 advertising_set->extended_params.advertising_tx_power, 6327 advertising_set->extended_params.primary_advertising_phy, 6328 advertising_set->extended_params.secondary_advertising_max_skip, 6329 advertising_set->extended_params.secondary_advertising_phy, 6330 advertising_set->extended_params.advertising_sid, 6331 advertising_set->extended_params.scan_request_notification_enable 6332 ); 6333 return true; 6334 } 6335 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6336 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6337 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6338 return true; 6339 } 6340 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6341 uint16_t pos = advertising_set->adv_data_pos; 6342 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6343 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6344 if ((operation & 0x02) != 0){ 6345 // last fragment or complete data 6346 operation |= 2; 6347 advertising_set->adv_data_pos = 0; 6348 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6349 } else { 6350 advertising_set->adv_data_pos += data_to_upload; 6351 } 6352 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6353 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6354 return true; 6355 } 6356 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6357 uint16_t pos = advertising_set->scan_data_pos; 6358 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6359 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6360 if ((operation & 0x02) != 0){ 6361 advertising_set->scan_data_pos = 0; 6362 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6363 } else { 6364 advertising_set->scan_data_pos += data_to_upload; 6365 } 6366 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6367 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6368 return true; 6369 } 6370 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6371 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6372 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6373 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6374 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6375 advertising_set->advertising_handle, 6376 advertising_set->periodic_params.periodic_advertising_interval_min, 6377 advertising_set->periodic_params.periodic_advertising_interval_max, 6378 advertising_set->periodic_params.periodic_advertising_properties); 6379 return true; 6380 } 6381 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6382 uint16_t pos = advertising_set->periodic_data_pos; 6383 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6384 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6385 if ((operation & 0x02) != 0){ 6386 // last fragment or complete data 6387 operation |= 2; 6388 advertising_set->periodic_data_pos = 0; 6389 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6390 } else { 6391 advertising_set->periodic_data_pos += data_to_upload; 6392 } 6393 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6394 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6395 return true; 6396 } 6397 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6398 } 6399 } 6400 #endif 6401 6402 #endif 6403 6404 #ifdef ENABLE_LE_CENTRAL 6405 // if connect with whitelist was active and is not cancelled yet, wait until next time 6406 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6407 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6408 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6409 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6410 #endif 6411 #endif 6412 6413 // LE Whitelist Management 6414 if (whitelist_modification_pending){ 6415 // add/remove entries 6416 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6417 while (btstack_linked_list_iterator_has_next(&lit)){ 6418 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6419 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6420 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6421 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6422 bd_addr_type_t address_type = entry->address_type; 6423 bd_addr_t address; 6424 memcpy(address, entry->address, 6); 6425 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6426 // remove from whitelist if not scheduled for re-addition 6427 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6428 btstack_memory_whitelist_entry_free(entry); 6429 } 6430 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6431 return true; 6432 } 6433 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6434 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6435 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6436 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6437 return true; 6438 } 6439 } 6440 } 6441 6442 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6443 // LE Resolving List Management 6444 if (resolving_list_supported) { 6445 uint16_t i; 6446 switch (hci_stack->le_resolving_list_state) { 6447 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6448 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6449 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6450 return true; 6451 case LE_RESOLVING_LIST_READ_SIZE: 6452 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6453 hci_send_cmd(&hci_le_read_resolving_list_size); 6454 return true; 6455 case LE_RESOLVING_LIST_SEND_CLEAR: 6456 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6457 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6458 sizeof(hci_stack->le_resolving_list_add_entries)); 6459 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6460 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6461 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6462 sizeof(hci_stack->le_resolving_list_remove_entries)); 6463 hci_send_cmd(&hci_le_clear_resolving_list); 6464 return true; 6465 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6466 // first remove old entries 6467 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6468 uint8_t offset = i >> 3; 6469 uint8_t mask = 1 << (i & 7); 6470 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6471 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6472 bd_addr_t peer_identity_addreses; 6473 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6474 sm_key_t peer_irk; 6475 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6476 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6477 6478 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6479 // trigger whitelist entry 'update' (work around for controller bug) 6480 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6481 while (btstack_linked_list_iterator_has_next(&lit)) { 6482 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6483 if (entry->address_type != peer_identity_addr_type) continue; 6484 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6485 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6486 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6487 } 6488 #endif 6489 6490 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6491 peer_identity_addreses); 6492 return true; 6493 } 6494 6495 // then add new entries 6496 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6497 uint8_t offset = i >> 3; 6498 uint8_t mask = 1 << (i & 7); 6499 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6500 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6501 bd_addr_t peer_identity_addreses; 6502 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6503 sm_key_t peer_irk; 6504 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6505 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6506 if (btstack_is_null(peer_irk, 16)) continue; 6507 const uint8_t *local_irk = gap_get_persistent_irk(); 6508 // command uses format specifier 'P' that stores 16-byte value without flip 6509 uint8_t local_irk_flipped[16]; 6510 uint8_t peer_irk_flipped[16]; 6511 reverse_128(local_irk, local_irk_flipped); 6512 reverse_128(peer_irk, peer_irk_flipped); 6513 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6514 peer_irk_flipped, local_irk_flipped); 6515 return true; 6516 } 6517 6518 // finally, set privacy mode 6519 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6520 uint8_t offset = i >> 3; 6521 uint8_t mask = 1 << (i & 7); 6522 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6523 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6524 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6525 // Network Privacy Mode is default 6526 continue; 6527 } 6528 bd_addr_t peer_identity_address; 6529 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6530 sm_key_t peer_irk; 6531 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6532 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6533 if (btstack_is_null(peer_irk, 16)) continue; 6534 // command uses format specifier 'P' that stores 16-byte value without flip 6535 uint8_t peer_irk_flipped[16]; 6536 reverse_128(peer_irk, peer_irk_flipped); 6537 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6538 return true; 6539 } 6540 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6541 break; 6542 6543 default: 6544 break; 6545 } 6546 } 6547 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6548 #endif 6549 6550 #ifdef ENABLE_LE_CENTRAL 6551 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6552 // LE Whitelist Management 6553 if (periodic_list_modification_pending){ 6554 // add/remove entries 6555 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6556 while (btstack_linked_list_iterator_has_next(&lit)){ 6557 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6558 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6559 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6560 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6561 return true; 6562 } 6563 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6564 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6565 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6566 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6567 return true; 6568 } 6569 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6570 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6571 btstack_memory_periodic_advertiser_list_entry_free(entry); 6572 } 6573 } 6574 } 6575 #endif 6576 #endif 6577 6578 #ifdef ENABLE_LE_CENTRAL 6579 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6580 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6581 if (hci_stack->le_past_set_default_params){ 6582 hci_stack->le_past_set_default_params = false; 6583 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6584 hci_stack->le_past_mode, 6585 hci_stack->le_past_skip, 6586 hci_stack->le_past_sync_timeout, 6587 hci_stack->le_past_cte_type); 6588 return true; 6589 } 6590 #endif 6591 #endif 6592 #endif 6593 6594 // post-pone all actions until stack is fully working 6595 if (hci_stack->state != HCI_STATE_WORKING) return false; 6596 6597 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6598 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6599 6600 // Phase 4: restore state 6601 6602 #ifdef ENABLE_LE_CENTRAL 6603 // re-start scanning 6604 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6605 hci_stack->le_scanning_active = true; 6606 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6607 if (hci_extended_advertising_supported()){ 6608 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6609 } else 6610 #endif 6611 { 6612 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6613 } 6614 return true; 6615 } 6616 #endif 6617 6618 #ifdef ENABLE_LE_CENTRAL 6619 // re-start connecting 6620 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6621 bd_addr_t null_addr; 6622 memset(null_addr, 0, 6); 6623 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6624 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6625 hci_send_le_create_connection(1, 0, null_addr); 6626 return true; 6627 } 6628 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6629 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6630 switch(hci_stack->le_periodic_sync_request){ 6631 case LE_CONNECTING_DIRECT: 6632 case LE_CONNECTING_WHITELIST: 6633 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6634 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6635 hci_stack->le_periodic_sync_options, 6636 hci_stack->le_periodic_sync_advertising_sid, 6637 hci_stack->le_periodic_sync_advertiser_address_type, 6638 hci_stack->le_periodic_sync_advertiser_address, 6639 hci_stack->le_periodic_sync_skip, 6640 hci_stack->le_periodic_sync_timeout, 6641 hci_stack->le_periodic_sync_cte_type); 6642 return true; 6643 default: 6644 break; 6645 } 6646 } 6647 #endif 6648 #endif 6649 6650 #ifdef ENABLE_LE_PERIPHERAL 6651 // re-start advertising 6652 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6653 // check if advertisements should be enabled given 6654 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6655 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6656 6657 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6658 if (hci_extended_advertising_supported()){ 6659 const uint8_t advertising_handles[] = { 0 }; 6660 const uint16_t durations[] = { 0 }; 6661 const uint16_t max_events[] = { 0 }; 6662 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6663 } else 6664 #endif 6665 { 6666 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6667 } 6668 return true; 6669 } 6670 6671 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6672 if (hci_extended_advertising_supported()) { 6673 btstack_linked_list_iterator_t it; 6674 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6675 while (btstack_linked_list_iterator_has_next(&it)) { 6676 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6677 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6678 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6679 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6680 const uint16_t durations[] = { advertising_set->enable_timeout }; 6681 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6682 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6683 return true; 6684 } 6685 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6686 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6687 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6688 uint8_t enable = 1; 6689 if (advertising_set->periodic_include_adi){ 6690 enable |= 2; 6691 } 6692 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6693 return true; 6694 } 6695 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6696 } 6697 } 6698 #endif 6699 #endif 6700 6701 return false; 6702 } 6703 6704 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6705 static bool hci_run_iso_tasks(void){ 6706 btstack_linked_list_iterator_t it; 6707 6708 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6709 return false; 6710 } 6711 6712 // BIG 6713 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6714 while (btstack_linked_list_iterator_has_next(&it)){ 6715 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6716 switch (big->state){ 6717 case LE_AUDIO_BIG_STATE_CREATE: 6718 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6719 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6720 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6721 hci_send_cmd(&hci_le_create_big, 6722 big->params->big_handle, 6723 big->params->advertising_handle, 6724 big->params->num_bis, 6725 big->params->sdu_interval_us, 6726 big->params->max_sdu, 6727 big->params->max_transport_latency_ms, 6728 big->params->rtn, 6729 big->params->phy, 6730 big->params->packing, 6731 big->params->framing, 6732 big->params->encryption, 6733 big->params->broadcast_code); 6734 return true; 6735 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6736 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6737 hci_send_cmd(&hci_le_setup_iso_data_path, big->bis_con_handles[big->state_vars.next_bis], 0, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 6738 return true; 6739 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6740 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6741 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6742 return true; 6743 case LE_AUDIO_BIG_STATE_TERMINATE: 6744 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6745 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6746 return true; 6747 default: 6748 break; 6749 } 6750 } 6751 6752 // BIG Sync 6753 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6754 while (btstack_linked_list_iterator_has_next(&it)){ 6755 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6756 switch (big_sync->state){ 6757 case LE_AUDIO_BIG_STATE_CREATE: 6758 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6759 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6760 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6761 hci_send_cmd(&hci_le_big_create_sync, 6762 big_sync->params->big_handle, 6763 big_sync->params->sync_handle, 6764 big_sync->params->encryption, 6765 big_sync->params->broadcast_code, 6766 big_sync->params->mse, 6767 big_sync->params->big_sync_timeout_10ms, 6768 big_sync->params->num_bis, 6769 big_sync->params->bis_indices); 6770 return true; 6771 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6772 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6773 hci_send_cmd(&hci_le_setup_iso_data_path, big_sync->bis_con_handles[big_sync->state_vars.next_bis], 1, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 6774 return true; 6775 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6776 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6777 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6778 return true; 6779 case LE_AUDIO_BIG_STATE_TERMINATE: 6780 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6781 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6782 return true; 6783 default: 6784 break; 6785 } 6786 } 6787 6788 // CIG 6789 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6790 while (btstack_linked_list_iterator_has_next(&it)) { 6791 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6792 uint8_t i; 6793 // Set CIG Parameters 6794 uint8_t cis_id[MAX_NR_CIS]; 6795 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6796 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6797 uint8_t phy_c_to_p[MAX_NR_CIS]; 6798 uint8_t phy_p_to_c[MAX_NR_CIS]; 6799 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6800 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6801 switch (cig->state) { 6802 case LE_AUDIO_CIG_STATE_CREATE: 6803 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6804 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6805 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6806 le_audio_cig_params_t * params = cig->params; 6807 for (i = 0; i < params->num_cis; i++) { 6808 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6809 cis_id[i] = cis_params->cis_id; 6810 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6811 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6812 phy_c_to_p[i] = cis_params->phy_c_to_p; 6813 phy_p_to_c[i] = cis_params->phy_p_to_c; 6814 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6815 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6816 } 6817 hci_send_cmd(&hci_le_set_cig_parameters, 6818 cig->cig_id, 6819 params->sdu_interval_c_to_p, 6820 params->sdu_interval_p_to_c, 6821 params->worst_case_sca, 6822 params->packing, 6823 params->framing, 6824 params->max_transport_latency_c_to_p, 6825 params->max_transport_latency_p_to_c, 6826 params->num_cis, 6827 cis_id, 6828 max_sdu_c_to_p, 6829 max_sdu_p_to_c, 6830 phy_c_to_p, 6831 phy_p_to_c, 6832 rtn_c_to_p, 6833 rtn_p_to_c 6834 ); 6835 return true; 6836 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6837 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6838 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6839 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6840 for (i=0;i<cig->num_cis;i++){ 6841 cig->cis_setup_active[i] = true; 6842 } 6843 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6844 return true; 6845 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6846 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6847 // find next path to setup 6848 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6849 if (cig->cis_established[cis_index] == false) { 6850 continue; 6851 } 6852 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6853 bool setup = true; 6854 if (cis_direction == 0){ 6855 // 0 - input - host to controller 6856 // we are central => central to peripheral 6857 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6858 } else { 6859 // 1 - output - controller to host 6860 // we are central => peripheral to central 6861 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6862 } 6863 if (setup){ 6864 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6865 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6866 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6867 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 6868 return true; 6869 } 6870 cig->state_vars.next_cis++; 6871 } 6872 // emit done 6873 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6874 default: 6875 break; 6876 } 6877 } 6878 6879 // CIS Accept/Reject 6880 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6881 while (btstack_linked_list_iterator_has_next(&it)) { 6882 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6883 hci_con_handle_t con_handle; 6884 switch (iso_stream->state){ 6885 case HCI_ISO_STREAM_W2_ACCEPT: 6886 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6887 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6888 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6889 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 6890 return true; 6891 case HCI_ISO_STREAM_W2_REJECT: 6892 con_handle = iso_stream->cis_handle; 6893 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6894 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6895 hci_iso_stream_finalize(iso_stream); 6896 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6897 return true; 6898 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6899 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6900 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6901 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6902 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 0, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 6903 break; 6904 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6905 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6906 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6907 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6908 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 1, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 6909 break; 6910 default: 6911 break; 6912 } 6913 } 6914 6915 return false; 6916 } 6917 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6918 #endif 6919 6920 static bool hci_run_general_pending_commands(void){ 6921 btstack_linked_item_t * it; 6922 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6923 hci_connection_t * connection = (hci_connection_t *) it; 6924 6925 switch(connection->state){ 6926 case SEND_CREATE_CONNECTION: 6927 switch(connection->address_type){ 6928 #ifdef ENABLE_CLASSIC 6929 case BD_ADDR_TYPE_ACL: 6930 log_info("sending hci_create_connection"); 6931 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6932 break; 6933 #endif 6934 default: 6935 #ifdef ENABLE_BLE 6936 #ifdef ENABLE_LE_CENTRAL 6937 log_info("sending hci_le_create_connection"); 6938 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6939 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6940 hci_send_le_create_connection(0, connection->address_type, connection->address); 6941 connection->state = SENT_CREATE_CONNECTION; 6942 #endif 6943 #endif 6944 break; 6945 } 6946 return true; 6947 6948 #ifdef ENABLE_CLASSIC 6949 case RECEIVED_CONNECTION_REQUEST: 6950 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6951 log_info("sending hci_accept_connection_request"); 6952 connection->state = ACCEPTED_CONNECTION_REQUEST; 6953 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6954 return true; 6955 } 6956 break; 6957 #endif 6958 case SEND_DISCONNECT: 6959 connection->state = SENT_DISCONNECT; 6960 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6961 return true; 6962 6963 default: 6964 break; 6965 } 6966 6967 // no further commands if connection is about to get shut down 6968 if (connection->state == SENT_DISCONNECT) continue; 6969 6970 #ifdef ENABLE_CLASSIC 6971 6972 // Handling link key request requires remote supported features 6973 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6974 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6975 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6976 6977 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6978 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6979 if (have_link_key && security_level_sufficient){ 6980 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6981 } else { 6982 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6983 } 6984 return true; 6985 } 6986 6987 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6988 log_info("denying to pin request"); 6989 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6990 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6991 return true; 6992 } 6993 6994 // security assessment requires remote features 6995 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6996 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6997 hci_ssp_assess_security_on_io_cap_request(connection); 6998 // 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 6999 } 7000 7001 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7002 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7003 // set authentication requirements: 7004 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7005 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7006 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7007 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7008 authreq |= 1; 7009 } 7010 bool bonding = hci_stack->bondable; 7011 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7012 // if we have received IO Cap Response, we're in responder role 7013 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7014 if (bonding && !remote_bonding){ 7015 log_info("Remote not bonding, dropping local flag"); 7016 bonding = false; 7017 } 7018 } 7019 if (bonding){ 7020 if (connection->bonding_flags & BONDING_DEDICATED){ 7021 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7022 } else { 7023 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7024 } 7025 } 7026 uint8_t have_oob_data = 0; 7027 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7028 if (connection->classic_oob_c_192 != NULL){ 7029 have_oob_data |= 1; 7030 } 7031 if (connection->classic_oob_c_256 != NULL){ 7032 have_oob_data |= 2; 7033 } 7034 #endif 7035 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7036 return true; 7037 } 7038 7039 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7040 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7041 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7042 return true; 7043 } 7044 7045 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7046 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7047 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7048 const uint8_t zero[16] = { 0 }; 7049 const uint8_t * r_192 = zero; 7050 const uint8_t * c_192 = zero; 7051 const uint8_t * r_256 = zero; 7052 const uint8_t * c_256 = zero; 7053 // verify P-256 OOB 7054 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7055 c_256 = connection->classic_oob_c_256; 7056 if (connection->classic_oob_r_256 != NULL) { 7057 r_256 = connection->classic_oob_r_256; 7058 } 7059 } 7060 // verify P-192 OOB 7061 if ((connection->classic_oob_c_192 != NULL)) { 7062 c_192 = connection->classic_oob_c_192; 7063 if (connection->classic_oob_r_192 != NULL) { 7064 r_192 = connection->classic_oob_r_192; 7065 } 7066 } 7067 7068 // assess security 7069 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7070 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7071 if (need_level_4 && !can_reach_level_4){ 7072 log_info("Level 4 required, but not possible -> abort"); 7073 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7074 // send oob negative reply 7075 c_256 = NULL; 7076 c_192 = NULL; 7077 } 7078 7079 // Reply 7080 if (c_256 != zero) { 7081 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7082 } else if (c_192 != zero){ 7083 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7084 } else { 7085 hci_stack->classic_oob_con_handle = connection->con_handle; 7086 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7087 } 7088 return true; 7089 } 7090 #endif 7091 7092 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7093 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7094 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7095 return true; 7096 } 7097 7098 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7099 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7100 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7101 return true; 7102 } 7103 7104 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7105 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7106 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7107 return true; 7108 } 7109 7110 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7111 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7112 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7113 connection->state = SENT_DISCONNECT; 7114 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7115 return true; 7116 } 7117 7118 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7119 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7120 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7121 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7122 return true; 7123 } 7124 7125 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7126 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7127 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7128 return true; 7129 } 7130 7131 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7132 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7133 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7134 return true; 7135 } 7136 7137 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7138 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7139 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7140 return true; 7141 } 7142 7143 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7144 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7145 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7146 return true; 7147 } 7148 7149 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7150 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7151 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7152 return true; 7153 } 7154 #endif 7155 7156 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7157 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7158 #ifdef ENABLE_CLASSIC 7159 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7160 #endif 7161 if (connection->state != SENT_DISCONNECT){ 7162 connection->state = SENT_DISCONNECT; 7163 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7164 return true; 7165 } 7166 } 7167 7168 #ifdef ENABLE_CLASSIC 7169 uint16_t sniff_min_interval; 7170 switch (connection->sniff_min_interval){ 7171 case 0: 7172 break; 7173 case 0xffff: 7174 connection->sniff_min_interval = 0; 7175 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7176 return true; 7177 default: 7178 sniff_min_interval = connection->sniff_min_interval; 7179 connection->sniff_min_interval = 0; 7180 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7181 return true; 7182 } 7183 7184 if (connection->sniff_subrating_max_latency != 0xffff){ 7185 uint16_t max_latency = connection->sniff_subrating_max_latency; 7186 connection->sniff_subrating_max_latency = 0; 7187 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7188 return true; 7189 } 7190 7191 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7192 uint8_t service_type = (uint8_t) connection->qos_service_type; 7193 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7194 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); 7195 return true; 7196 } 7197 7198 if (connection->request_role != HCI_ROLE_INVALID){ 7199 hci_role_t role = connection->request_role; 7200 connection->request_role = HCI_ROLE_INVALID; 7201 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7202 return true; 7203 } 7204 #endif 7205 7206 if (connection->gap_connection_tasks != 0){ 7207 #ifdef ENABLE_CLASSIC 7208 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7209 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7210 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7211 return true; 7212 } 7213 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7214 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7215 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7216 return true; 7217 } 7218 #endif 7219 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7220 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7221 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7222 return true; 7223 } 7224 #ifdef ENABLE_BLE 7225 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7226 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7227 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7228 return true; 7229 } 7230 #endif 7231 } 7232 7233 #ifdef ENABLE_BLE 7234 switch (connection->le_con_parameter_update_state){ 7235 // response to L2CAP CON PARAMETER UPDATE REQUEST 7236 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7237 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7238 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7239 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7240 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7241 return true; 7242 case CON_PARAMETER_UPDATE_REPLY: 7243 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7244 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7245 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7246 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7247 return true; 7248 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7249 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7250 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7251 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7252 return true; 7253 default: 7254 break; 7255 } 7256 if (connection->le_phy_update_all_phys != 0xffu){ 7257 uint8_t all_phys = connection->le_phy_update_all_phys; 7258 connection->le_phy_update_all_phys = 0xff; 7259 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); 7260 return true; 7261 } 7262 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7263 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7264 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7265 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7266 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7267 return true; 7268 } 7269 if (connection->le_past_advertising_handle != 0xff){ 7270 uint8_t advertising_handle = connection->le_past_advertising_handle; 7271 connection->le_past_advertising_handle = 0xff; 7272 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7273 return true; 7274 } 7275 #endif 7276 #endif 7277 } 7278 return false; 7279 } 7280 7281 static void hci_run(void){ 7282 7283 // stack state sub statemachines 7284 switch (hci_stack->state) { 7285 case HCI_STATE_INITIALIZING: 7286 hci_initializing_run(); 7287 break; 7288 case HCI_STATE_HALTING: 7289 hci_halting_run(); 7290 break; 7291 case HCI_STATE_FALLING_ASLEEP: 7292 hci_falling_asleep_run(); 7293 break; 7294 default: 7295 break; 7296 } 7297 7298 // allow to run after initialization to working transition 7299 if (hci_stack->state != HCI_STATE_WORKING){ 7300 return; 7301 } 7302 7303 bool done; 7304 7305 // send continuation fragments first, as they block the prepared packet buffer 7306 done = hci_run_acl_fragments(); 7307 if (done) return; 7308 7309 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7310 done = hci_run_iso_fragments(); 7311 if (done) return; 7312 #endif 7313 7314 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7315 // send host num completed packets next as they don't require num_cmd_packets > 0 7316 if (!hci_can_send_comand_packet_transport()) return; 7317 if (hci_stack->host_completed_packets){ 7318 hci_host_num_completed_packets(); 7319 return; 7320 } 7321 #endif 7322 7323 if (!hci_can_send_command_packet_now()) return; 7324 7325 // global/non-connection oriented commands 7326 7327 7328 #ifdef ENABLE_CLASSIC 7329 // general gap classic 7330 done = hci_run_general_gap_classic(); 7331 if (done) return; 7332 #endif 7333 7334 #ifdef ENABLE_BLE 7335 // general gap le 7336 done = hci_run_general_gap_le(); 7337 if (done) return; 7338 7339 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7340 // ISO related tasks, e.g. BIG create/terminate/sync 7341 done = hci_run_iso_tasks(); 7342 if (done) return; 7343 #endif 7344 #endif 7345 7346 // send pending HCI commands 7347 hci_run_general_pending_commands(); 7348 } 7349 7350 #ifdef ENABLE_CLASSIC 7351 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7352 // bits 6-9 are 'don't use' 7353 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7354 7355 // restrict packet types to local and remote supported 7356 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7357 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7358 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7359 } 7360 #endif 7361 7362 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7363 // house-keeping 7364 7365 #ifdef ENABLE_CLASSIC 7366 bd_addr_t addr; 7367 hci_connection_t * conn; 7368 #endif 7369 #ifdef ENABLE_LE_CENTRAL 7370 uint8_t initiator_filter_policy; 7371 #endif 7372 7373 uint16_t opcode = little_endian_read_16(packet, 0); 7374 switch (opcode) { 7375 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7376 hci_stack->loopback_mode = packet[3]; 7377 break; 7378 7379 #ifdef ENABLE_CLASSIC 7380 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7381 reverse_bd_addr(&packet[3], addr); 7382 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7383 7384 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7385 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7386 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7387 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7388 } 7389 7390 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7391 if (!conn) { 7392 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7393 if (!conn) { 7394 // notify client that alloc failed 7395 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7396 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7397 } 7398 conn->state = SEND_CREATE_CONNECTION; 7399 } 7400 7401 log_info("conn state %u", conn->state); 7402 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7403 switch (conn->state) { 7404 // if connection active exists 7405 case OPEN: 7406 // and OPEN, emit connection complete command 7407 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7408 // packet not sent to controller 7409 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7410 case RECEIVED_DISCONNECTION_COMPLETE: 7411 // create connection triggered in disconnect complete event, let's do it now 7412 break; 7413 case SEND_CREATE_CONNECTION: 7414 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7415 if (hci_classic_operation_active()){ 7416 return ERROR_CODE_SUCCESS; 7417 } 7418 #endif 7419 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7420 break; 7421 default: 7422 // otherwise, just ignore as it is already in the open process 7423 // packet not sent to controller 7424 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7425 } 7426 conn->state = SENT_CREATE_CONNECTION; 7427 7428 // track outgoing connection 7429 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7430 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7431 break; 7432 7433 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7434 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7435 if (conn == NULL) { 7436 // neither SCO nor ACL connection for con handle 7437 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7438 } else { 7439 uint16_t remote_supported_sco_packets; 7440 switch (conn->address_type){ 7441 case BD_ADDR_TYPE_ACL: 7442 // assert SCO connection does not exit 7443 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7444 return ERROR_CODE_COMMAND_DISALLOWED; 7445 } 7446 // cache remote sco packet types 7447 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7448 7449 // allocate connection struct 7450 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7451 HCI_ROLE_MASTER); 7452 if (!conn) { 7453 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7454 } 7455 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7456 break; 7457 case BD_ADDR_TYPE_SCO: 7458 // update of existing SCO connection 7459 break; 7460 default: 7461 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7462 } 7463 } 7464 7465 // conn refers to hci connection of type sco now 7466 7467 conn->state = SENT_CREATE_CONNECTION; 7468 7469 // track outgoing connection to handle command status with error 7470 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7471 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7472 7473 // setup_synchronous_connection? Voice setting at offset 22 7474 // TODO: compare to current setting if sco connection already active 7475 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7476 7477 // derive sco payload length from packet types 7478 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7479 break; 7480 7481 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7482 // get SCO connection 7483 reverse_bd_addr(&packet[3], addr); 7484 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7485 if (conn == NULL){ 7486 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7487 } 7488 7489 conn->state = ACCEPTED_CONNECTION_REQUEST; 7490 7491 // track outgoing connection to handle command status with error 7492 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7493 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7494 7495 // accept_synchronous_connection? Voice setting at offset 18 7496 // TODO: compare to current setting if sco connection already active 7497 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7498 7499 // derive sco payload length from packet types 7500 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7501 break; 7502 #endif 7503 7504 #ifdef ENABLE_BLE 7505 #ifdef ENABLE_LE_CENTRAL 7506 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7507 // white list used? 7508 initiator_filter_policy = packet[7]; 7509 switch (initiator_filter_policy) { 7510 case 0: 7511 // whitelist not used 7512 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7513 break; 7514 case 1: 7515 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7516 break; 7517 default: 7518 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7519 break; 7520 } 7521 // track outgoing connection 7522 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7523 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7524 break; 7525 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7526 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7527 // white list used? 7528 initiator_filter_policy = packet[3]; 7529 switch (initiator_filter_policy) { 7530 case 0: 7531 // whitelist not used 7532 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7533 break; 7534 case 1: 7535 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7536 break; 7537 default: 7538 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7539 break; 7540 } 7541 // track outgoing connection 7542 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7543 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7544 break; 7545 #endif 7546 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7547 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7548 break; 7549 #endif 7550 #endif /* ENABLE_BLE */ 7551 default: 7552 break; 7553 } 7554 7555 hci_stack->num_cmd_packets--; 7556 7557 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7558 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7559 if (err != 0){ 7560 return ERROR_CODE_HARDWARE_FAILURE; 7561 } 7562 return ERROR_CODE_SUCCESS; 7563 } 7564 7565 // disconnect because of security block 7566 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7567 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7568 if (!connection) return; 7569 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7570 } 7571 7572 7573 // Configure Secure Simple Pairing 7574 7575 #ifdef ENABLE_CLASSIC 7576 7577 // enable will enable SSP during init 7578 void gap_ssp_set_enable(int enable){ 7579 hci_stack->ssp_enable = enable; 7580 } 7581 7582 static int hci_local_ssp_activated(void){ 7583 return gap_ssp_supported() && hci_stack->ssp_enable; 7584 } 7585 7586 // if set, BTstack will respond to io capability request using authentication requirement 7587 void gap_ssp_set_io_capability(int io_capability){ 7588 hci_stack->ssp_io_capability = io_capability; 7589 } 7590 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7591 hci_stack->ssp_authentication_requirement = authentication_requirement; 7592 } 7593 7594 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7595 void gap_ssp_set_auto_accept(int auto_accept){ 7596 hci_stack->ssp_auto_accept = auto_accept; 7597 } 7598 7599 void gap_secure_connections_enable(bool enable){ 7600 hci_stack->secure_connections_enable = enable; 7601 } 7602 bool gap_secure_connections_active(void){ 7603 return hci_stack->secure_connections_active; 7604 } 7605 7606 #endif 7607 7608 // va_list part of hci_send_cmd 7609 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7610 if (!hci_can_send_command_packet_now()){ 7611 log_error("hci_send_cmd called but cannot send packet now"); 7612 return ERROR_CODE_COMMAND_DISALLOWED; 7613 } 7614 7615 // for HCI INITIALIZATION 7616 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7617 hci_stack->last_cmd_opcode = cmd->opcode; 7618 7619 hci_reserve_packet_buffer(); 7620 uint8_t * packet = hci_stack->hci_packet_buffer; 7621 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7622 uint8_t status = hci_send_cmd_packet(packet, size); 7623 7624 // release packet buffer on error or for synchronous transport implementations 7625 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7626 hci_release_packet_buffer(); 7627 hci_emit_transport_packet_sent(); 7628 } 7629 7630 return status; 7631 } 7632 7633 /** 7634 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7635 */ 7636 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7637 va_list argptr; 7638 va_start(argptr, cmd); 7639 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7640 va_end(argptr); 7641 return status; 7642 } 7643 7644 // Create various non-HCI events. 7645 // TODO: generalize, use table similar to hci_create_command 7646 7647 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7648 // dump packet 7649 if (dump) { 7650 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7651 } 7652 7653 // dispatch to all event handlers 7654 btstack_linked_list_iterator_t it; 7655 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7656 while (btstack_linked_list_iterator_has_next(&it)){ 7657 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7658 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7659 } 7660 } 7661 7662 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7663 if (!hci_stack->acl_packet_handler) return; 7664 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7665 } 7666 7667 #ifdef ENABLE_CLASSIC 7668 static void hci_notify_if_sco_can_send_now(void){ 7669 // notify SCO sender if waiting 7670 if (!hci_stack->sco_waiting_for_can_send_now) return; 7671 if (hci_can_send_sco_packet_now()){ 7672 hci_stack->sco_waiting_for_can_send_now = 0; 7673 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7674 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7675 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7676 } 7677 } 7678 7679 // parsing end emitting has been merged to reduce code size 7680 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7681 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7682 7683 uint8_t * eir_data; 7684 ad_context_t context; 7685 const uint8_t * name; 7686 uint8_t name_len; 7687 7688 if (size < 3) return; 7689 7690 int event_type = hci_event_packet_get_type(packet); 7691 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7692 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7693 7694 switch (event_type){ 7695 case HCI_EVENT_INQUIRY_RESULT: 7696 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7697 if (size != (3 + (num_responses * 14))) return; 7698 break; 7699 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7700 if (size != 257) return; 7701 if (num_responses != 1) return; 7702 break; 7703 default: 7704 return; 7705 } 7706 7707 // event[1] is set at the end 7708 int i; 7709 for (i=0; i<num_responses;i++){ 7710 memset(event, 0, sizeof(event)); 7711 event[0] = GAP_EVENT_INQUIRY_RESULT; 7712 uint8_t event_size = 27; // if name is not set by EIR 7713 7714 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7715 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7716 (void)memcpy(&event[9], 7717 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7718 3); // class of device 7719 (void)memcpy(&event[12], 7720 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7721 2); // clock offset 7722 7723 switch (event_type){ 7724 case HCI_EVENT_INQUIRY_RESULT: 7725 // 14,15,16,17 = 0, size 18 7726 break; 7727 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7728 event[14] = 1; 7729 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7730 // 16,17 = 0, size 18 7731 break; 7732 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7733 event[14] = 1; 7734 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7735 // EIR packets only contain a single inquiry response 7736 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7737 name = NULL; 7738 // Iterate over EIR data 7739 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7740 uint8_t data_type = ad_iterator_get_data_type(&context); 7741 uint8_t data_size = ad_iterator_get_data_len(&context); 7742 const uint8_t * data = ad_iterator_get_data(&context); 7743 // Prefer Complete Local Name over Shortened Local Name 7744 switch (data_type){ 7745 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7746 if (name) continue; 7747 /* fall through */ 7748 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7749 name = data; 7750 name_len = data_size; 7751 break; 7752 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7753 if (data_size != 8) break; 7754 event[16] = 1; 7755 memcpy(&event[17], data, 8); 7756 break; 7757 default: 7758 break; 7759 } 7760 } 7761 if (name){ 7762 event[25] = 1; 7763 // truncate name if needed 7764 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7765 event[26] = len; 7766 (void)memcpy(&event[27], name, len); 7767 event_size += len; 7768 } 7769 break; 7770 default: 7771 return; 7772 } 7773 event[1] = event_size - 2; 7774 hci_emit_event(event, event_size, 1); 7775 } 7776 } 7777 #endif 7778 7779 void hci_emit_state(void){ 7780 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7781 uint8_t event[3]; 7782 event[0] = BTSTACK_EVENT_STATE; 7783 event[1] = sizeof(event) - 2u; 7784 event[2] = hci_stack->state; 7785 hci_emit_event(event, sizeof(event), 1); 7786 } 7787 7788 #ifdef ENABLE_CLASSIC 7789 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7790 uint8_t event[13]; 7791 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7792 event[1] = sizeof(event) - 2; 7793 event[2] = status; 7794 little_endian_store_16(event, 3, con_handle); 7795 reverse_bd_addr(address, &event[5]); 7796 event[11] = 1; // ACL connection 7797 event[12] = 0; // encryption disabled 7798 hci_emit_event(event, sizeof(event), 1); 7799 } 7800 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7801 if (disable_l2cap_timeouts) return; 7802 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7803 uint8_t event[4]; 7804 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7805 event[1] = sizeof(event) - 2; 7806 little_endian_store_16(event, 2, conn->con_handle); 7807 hci_emit_event(event, sizeof(event), 1); 7808 } 7809 #endif 7810 7811 #ifdef ENABLE_BLE 7812 #ifdef ENABLE_LE_CENTRAL 7813 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){ 7814 uint8_t event[21]; 7815 event[0] = HCI_EVENT_LE_META; 7816 event[1] = sizeof(event) - 2u; 7817 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7818 event[3] = status; 7819 little_endian_store_16(event, 4, con_handle); 7820 event[6] = 0; // TODO: role 7821 event[7] = address_type; 7822 reverse_bd_addr(address, &event[8]); 7823 little_endian_store_16(event, 14, 0); // interval 7824 little_endian_store_16(event, 16, 0); // latency 7825 little_endian_store_16(event, 18, 0); // supervision timeout 7826 event[20] = 0; // master clock accuracy 7827 hci_emit_event(event, sizeof(event), 1); 7828 } 7829 #endif 7830 #endif 7831 7832 static void hci_emit_transport_packet_sent(void){ 7833 // notify upper stack that it might be possible to send again 7834 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7835 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7836 } 7837 7838 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7839 uint8_t event[6]; 7840 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7841 event[1] = sizeof(event) - 2u; 7842 event[2] = 0; // status = OK 7843 little_endian_store_16(event, 3, con_handle); 7844 event[5] = reason; 7845 hci_emit_event(event, sizeof(event), 1); 7846 } 7847 7848 static void hci_emit_nr_connections_changed(void){ 7849 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7850 uint8_t event[3]; 7851 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7852 event[1] = sizeof(event) - 2u; 7853 event[2] = nr_hci_connections(); 7854 hci_emit_event(event, sizeof(event), 1); 7855 } 7856 7857 static void hci_emit_hci_open_failed(void){ 7858 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7859 uint8_t event[2]; 7860 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7861 event[1] = sizeof(event) - 2u; 7862 hci_emit_event(event, sizeof(event), 1); 7863 } 7864 7865 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7866 log_info("hci_emit_dedicated_bonding_result %u ", status); 7867 uint8_t event[9]; 7868 int pos = 0; 7869 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7870 event[pos++] = sizeof(event) - 2u; 7871 event[pos++] = status; 7872 reverse_bd_addr(address, &event[pos]); 7873 hci_emit_event(event, sizeof(event), 1); 7874 } 7875 7876 7877 #ifdef ENABLE_CLASSIC 7878 7879 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7880 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7881 uint8_t event[5]; 7882 int pos = 0; 7883 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7884 event[pos++] = sizeof(event) - 2; 7885 little_endian_store_16(event, 2, con_handle); 7886 pos += 2; 7887 event[pos++] = level; 7888 hci_emit_event(event, sizeof(event), 1); 7889 } 7890 7891 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7892 if (!connection) return LEVEL_0; 7893 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7894 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7895 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7896 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7897 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7898 // LEVEL 4 always requires 128 bit encrytion key size 7899 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7900 security_level = LEVEL_3; 7901 } 7902 return security_level; 7903 } 7904 7905 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7906 uint8_t event[4]; 7907 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7908 event[1] = sizeof(event) - 2; 7909 event[2] = discoverable; 7910 event[3] = connectable; 7911 hci_emit_event(event, sizeof(event), 1); 7912 } 7913 7914 // query if remote side supports eSCO 7915 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7916 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7917 if (!connection) return false; 7918 return (connection->remote_supported_features[0] & 1) != 0; 7919 } 7920 7921 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 7922 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7923 if (!connection) return 0; 7924 return connection->remote_supported_sco_packets; 7925 } 7926 7927 static bool hci_ssp_supported(hci_connection_t * connection){ 7928 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7929 return (connection->bonding_flags & mask) == mask; 7930 } 7931 7932 // query if remote side supports SSP 7933 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7934 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7935 if (!connection) return false; 7936 return hci_ssp_supported(connection) ? 1 : 0; 7937 } 7938 7939 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7940 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7941 } 7942 7943 /** 7944 * Check if remote supported features query has completed 7945 */ 7946 bool hci_remote_features_available(hci_con_handle_t handle){ 7947 hci_connection_t * connection = hci_connection_for_handle(handle); 7948 if (!connection) return false; 7949 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7950 } 7951 7952 /** 7953 * Trigger remote supported features query 7954 */ 7955 7956 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7957 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7958 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7959 } 7960 } 7961 7962 void hci_remote_features_query(hci_con_handle_t con_handle){ 7963 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7964 if (!connection) return; 7965 hci_trigger_remote_features_for_connection(connection); 7966 hci_run(); 7967 } 7968 7969 // GAP API 7970 /** 7971 * @bbrief enable/disable bonding. default is enabled 7972 * @praram enabled 7973 */ 7974 void gap_set_bondable_mode(int enable){ 7975 hci_stack->bondable = enable ? 1 : 0; 7976 } 7977 /** 7978 * @brief Get bondable mode. 7979 * @return 1 if bondable 7980 */ 7981 int gap_get_bondable_mode(void){ 7982 return hci_stack->bondable; 7983 } 7984 7985 /** 7986 * @brief map link keys to security levels 7987 */ 7988 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7989 switch (link_key_type){ 7990 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7991 return LEVEL_4; 7992 case COMBINATION_KEY: 7993 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7994 return LEVEL_3; 7995 default: 7996 return LEVEL_2; 7997 } 7998 } 7999 8000 /** 8001 * @brief map link keys to secure connection yes/no 8002 */ 8003 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8004 switch (link_key_type){ 8005 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8006 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8007 return true; 8008 default: 8009 return false; 8010 } 8011 } 8012 8013 /** 8014 * @brief map link keys to authenticated 8015 */ 8016 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8017 switch (link_key_type){ 8018 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8019 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8020 return true; 8021 default: 8022 return false; 8023 } 8024 } 8025 8026 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8027 log_info("gap_mitm_protection_required_for_security_level %u", level); 8028 return level > LEVEL_2; 8029 } 8030 8031 /** 8032 * @brief get current security level 8033 */ 8034 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8035 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8036 if (!connection) return LEVEL_0; 8037 return gap_security_level_for_connection(connection); 8038 } 8039 8040 /** 8041 * @brief request connection to device to 8042 * @result GAP_AUTHENTICATION_RESULT 8043 */ 8044 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8045 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8046 if (!connection){ 8047 hci_emit_security_level(con_handle, LEVEL_0); 8048 return; 8049 } 8050 8051 btstack_assert(hci_is_le_connection(connection) == false); 8052 8053 // 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) 8054 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8055 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8056 requested_level = LEVEL_4; 8057 } 8058 8059 gap_security_level_t current_level = gap_security_level(con_handle); 8060 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8061 requested_level, connection->requested_security_level, current_level); 8062 8063 // authentication active if authentication request was sent or planned level > 0 8064 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8065 if (authentication_active){ 8066 // authentication already active 8067 if (connection->requested_security_level < requested_level){ 8068 // increase requested level as new level is higher 8069 // TODO: handle re-authentication when done 8070 connection->requested_security_level = requested_level; 8071 } 8072 } else { 8073 // no request active, notify if security sufficient 8074 if (requested_level <= current_level){ 8075 hci_emit_security_level(con_handle, current_level); 8076 return; 8077 } 8078 8079 // store request 8080 connection->requested_security_level = requested_level; 8081 8082 // start to authenticate connection 8083 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8084 8085 // request remote features if not already active, also trigger hci_run 8086 hci_remote_features_query(con_handle); 8087 } 8088 } 8089 8090 /** 8091 * @brief start dedicated bonding with device. disconnect after bonding 8092 * @param device 8093 * @param request MITM protection 8094 * @result GAP_DEDICATED_BONDING_COMPLETE 8095 */ 8096 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8097 8098 // create connection state machine 8099 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8100 8101 if (!connection){ 8102 return BTSTACK_MEMORY_ALLOC_FAILED; 8103 } 8104 8105 // delete link key 8106 gap_drop_link_key_for_bd_addr(device); 8107 8108 // configure LEVEL_2/3, dedicated bonding 8109 connection->state = SEND_CREATE_CONNECTION; 8110 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8111 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8112 connection->bonding_flags = BONDING_DEDICATED; 8113 8114 hci_run(); 8115 8116 return 0; 8117 } 8118 8119 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8120 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8121 if (connection == NULL){ 8122 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8123 } 8124 if (defer){ 8125 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8126 } else { 8127 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8128 // trigger disconnect 8129 hci_run(); 8130 } 8131 return ERROR_CODE_SUCCESS; 8132 } 8133 8134 void gap_set_local_name(const char * local_name){ 8135 hci_stack->local_name = local_name; 8136 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8137 // also update EIR if not set by user 8138 if (hci_stack->eir_data == NULL){ 8139 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8140 } 8141 hci_run(); 8142 } 8143 #endif 8144 8145 8146 #ifdef ENABLE_BLE 8147 8148 #ifdef ENABLE_LE_CENTRAL 8149 void gap_start_scan(void){ 8150 hci_stack->le_scanning_enabled = true; 8151 hci_run(); 8152 } 8153 8154 void gap_stop_scan(void){ 8155 hci_stack->le_scanning_enabled = false; 8156 hci_run(); 8157 } 8158 8159 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8160 hci_stack->le_scan_type = scan_type; 8161 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8162 hci_stack->le_scan_interval = scan_interval; 8163 hci_stack->le_scan_window = scan_window; 8164 hci_stack->le_scanning_param_update = true; 8165 hci_run(); 8166 } 8167 8168 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8169 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8170 } 8171 8172 void gap_set_scan_duplicate_filter(bool enabled){ 8173 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8174 } 8175 8176 void gap_set_scan_phys(uint8_t phys){ 8177 // LE Coded and LE 1M PHY 8178 hci_stack->le_scan_phys = phys & 0x05; 8179 } 8180 8181 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 8182 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8183 if (!conn){ 8184 // disallow if le connection is already outgoing 8185 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8186 log_error("le connection already active"); 8187 return ERROR_CODE_COMMAND_DISALLOWED; 8188 } 8189 8190 log_info("gap_connect: no connection exists yet, creating context"); 8191 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8192 if (!conn){ 8193 // notify client that alloc failed 8194 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 8195 log_info("gap_connect: failed to alloc hci_connection_t"); 8196 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 8197 } 8198 8199 // set le connecting state 8200 if (hci_is_le_connection_type(addr_type)){ 8201 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8202 } 8203 8204 conn->state = SEND_CREATE_CONNECTION; 8205 log_info("gap_connect: send create connection next"); 8206 hci_run(); 8207 return ERROR_CODE_SUCCESS; 8208 } 8209 8210 if (!hci_is_le_connection(conn) || 8211 (conn->state == SEND_CREATE_CONNECTION) || 8212 (conn->state == SENT_CREATE_CONNECTION)) { 8213 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 8214 log_error("gap_connect: classic connection or connect is already being created"); 8215 return GATT_CLIENT_IN_WRONG_STATE; 8216 } 8217 8218 // check if connection was just disconnected 8219 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8220 log_info("gap_connect: send create connection (again)"); 8221 conn->state = SEND_CREATE_CONNECTION; 8222 hci_run(); 8223 return ERROR_CODE_SUCCESS; 8224 } 8225 8226 log_info("gap_connect: context exists with state %u", conn->state); 8227 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 8228 hci_run(); 8229 return ERROR_CODE_SUCCESS; 8230 } 8231 8232 // @assumption: only a single outgoing LE Connection exists 8233 static hci_connection_t * gap_get_outgoing_connection(void){ 8234 btstack_linked_item_t *it; 8235 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8236 hci_connection_t * conn = (hci_connection_t *) it; 8237 if (!hci_is_le_connection(conn)) continue; 8238 switch (conn->state){ 8239 case SEND_CREATE_CONNECTION: 8240 case SENT_CREATE_CONNECTION: 8241 return conn; 8242 default: 8243 break; 8244 }; 8245 } 8246 return NULL; 8247 } 8248 8249 uint8_t gap_connect_cancel(void){ 8250 hci_connection_t * conn; 8251 switch (hci_stack->le_connecting_request){ 8252 case LE_CONNECTING_IDLE: 8253 break; 8254 case LE_CONNECTING_WHITELIST: 8255 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8256 hci_run(); 8257 break; 8258 case LE_CONNECTING_DIRECT: 8259 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8260 conn = gap_get_outgoing_connection(); 8261 if (conn == NULL){ 8262 hci_run(); 8263 } else { 8264 switch (conn->state){ 8265 case SEND_CREATE_CONNECTION: 8266 // skip sending create connection and emit event instead 8267 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8268 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8269 btstack_memory_hci_connection_free( conn ); 8270 break; 8271 case SENT_CREATE_CONNECTION: 8272 // let hci_run_general_gap_le cancel outgoing connection 8273 hci_run(); 8274 break; 8275 default: 8276 break; 8277 } 8278 } 8279 break; 8280 default: 8281 btstack_unreachable(); 8282 break; 8283 } 8284 return ERROR_CODE_SUCCESS; 8285 } 8286 8287 /** 8288 * @brief Set connection parameters for outgoing connections 8289 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8290 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8291 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8292 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8293 * @param conn_latency, default: 4 8294 * @param supervision_timeout (unit: 10ms), default: 720 ms 8295 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8296 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8297 */ 8298 8299 void gap_set_connection_phys(uint8_t phys){ 8300 // LE Coded, LE 1M, LE 2M PHY 8301 hci_stack->le_connection_phys = phys & 7; 8302 } 8303 8304 #endif 8305 8306 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8307 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8308 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8309 hci_stack->le_connection_scan_interval = conn_scan_interval; 8310 hci_stack->le_connection_scan_window = conn_scan_window; 8311 hci_stack->le_connection_interval_min = conn_interval_min; 8312 hci_stack->le_connection_interval_max = conn_interval_max; 8313 hci_stack->le_connection_latency = conn_latency; 8314 hci_stack->le_supervision_timeout = supervision_timeout; 8315 hci_stack->le_minimum_ce_length = min_ce_length; 8316 hci_stack->le_maximum_ce_length = max_ce_length; 8317 } 8318 8319 /** 8320 * @brief Updates the connection parameters 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_update_connection_parameters(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_CHANGE_HCI_CON_PARAMETERS; 8337 hci_run(); 8338 return 0; 8339 } 8340 8341 /** 8342 * @brief Request an update of the connection parameter for a given LE connection 8343 * @param handle 8344 * @param conn_interval_min (unit: 1.25ms) 8345 * @param conn_interval_max (unit: 1.25ms) 8346 * @param conn_latency 8347 * @param supervision_timeout (unit: 10ms) 8348 * @return 0 if ok 8349 */ 8350 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8351 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8352 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8353 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8354 connection->le_conn_interval_min = conn_interval_min; 8355 connection->le_conn_interval_max = conn_interval_max; 8356 connection->le_conn_latency = conn_latency; 8357 connection->le_supervision_timeout = supervision_timeout; 8358 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8359 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8360 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8361 return 0; 8362 } 8363 8364 #ifdef ENABLE_LE_PERIPHERAL 8365 8366 /** 8367 * @brief Set Advertisement Data 8368 * @param advertising_data_length 8369 * @param advertising_data (max 31 octets) 8370 * @note data is not copied, pointer has to stay valid 8371 */ 8372 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8373 hci_stack->le_advertisements_data_len = advertising_data_length; 8374 hci_stack->le_advertisements_data = advertising_data; 8375 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8376 hci_run(); 8377 } 8378 8379 /** 8380 * @brief Set Scan Response Data 8381 * @param advertising_data_length 8382 * @param advertising_data (max 31 octets) 8383 * @note data is not copied, pointer has to stay valid 8384 */ 8385 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8386 hci_stack->le_scan_response_data_len = scan_response_data_length; 8387 hci_stack->le_scan_response_data = scan_response_data; 8388 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8389 hci_run(); 8390 } 8391 8392 /** 8393 * @brief Set Advertisement Parameters 8394 * @param adv_int_min 8395 * @param adv_int_max 8396 * @param adv_type 8397 * @param direct_address_type 8398 * @param direct_address 8399 * @param channel_map 8400 * @param filter_policy 8401 * 8402 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8403 */ 8404 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8405 uint8_t direct_address_typ, bd_addr_t direct_address, 8406 uint8_t channel_map, uint8_t filter_policy) { 8407 8408 hci_stack->le_advertisements_interval_min = adv_int_min; 8409 hci_stack->le_advertisements_interval_max = adv_int_max; 8410 hci_stack->le_advertisements_type = adv_type; 8411 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8412 hci_stack->le_advertisements_channel_map = channel_map; 8413 hci_stack->le_advertisements_filter_policy = filter_policy; 8414 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8415 6); 8416 8417 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8418 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8419 hci_run(); 8420 } 8421 8422 /** 8423 * @brief Enable/Disable Advertisements 8424 * @param enabled 8425 */ 8426 void gap_advertisements_enable(int enabled){ 8427 if (enabled == 0){ 8428 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8429 } else { 8430 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8431 } 8432 hci_update_advertisements_enabled_for_current_roles(); 8433 hci_run(); 8434 } 8435 8436 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8437 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8438 btstack_linked_list_iterator_t it; 8439 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8440 while (btstack_linked_list_iterator_has_next(&it)){ 8441 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8442 if ( item->advertising_handle == advertising_handle ) { 8443 return item; 8444 } 8445 } 8446 return NULL; 8447 } 8448 8449 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8450 hci_stack->le_resolvable_private_address_update_s = update_s; 8451 hci_run(); 8452 return ERROR_CODE_SUCCESS; 8453 } 8454 8455 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8456 // find free advertisement handle 8457 uint8_t advertisement_handle; 8458 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8459 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8460 } 8461 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8462 // clear 8463 memset(storage, 0, sizeof(le_advertising_set_t)); 8464 // copy params 8465 storage->advertising_handle = advertisement_handle; 8466 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8467 // add to list 8468 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8469 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8470 *out_advertising_handle = advertisement_handle; 8471 // set tasks and start 8472 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8473 hci_run(); 8474 return ERROR_CODE_SUCCESS; 8475 } 8476 8477 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8478 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8479 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8480 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8481 // set tasks and start 8482 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8483 hci_run(); 8484 return ERROR_CODE_SUCCESS; 8485 } 8486 8487 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 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 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8491 return ERROR_CODE_SUCCESS; 8492 } 8493 8494 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8495 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8496 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8497 memcpy(advertising_set->random_address, random_address, 6); 8498 // set tasks and start 8499 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8500 hci_run(); 8501 return ERROR_CODE_SUCCESS; 8502 } 8503 8504 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8505 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8506 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8507 advertising_set->adv_data = advertising_data; 8508 advertising_set->adv_data_len = advertising_data_length; 8509 // set tasks and start 8510 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8511 hci_run(); 8512 return ERROR_CODE_SUCCESS; 8513 } 8514 8515 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){ 8516 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8517 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8518 advertising_set->scan_data = scan_response_data; 8519 advertising_set->scan_data_len = scan_response_data_length; 8520 // set tasks and start 8521 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8522 hci_run(); 8523 return ERROR_CODE_SUCCESS; 8524 } 8525 8526 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8527 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8528 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8529 advertising_set->enable_timeout = timeout; 8530 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8531 // set tasks and start 8532 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8533 hci_run(); 8534 return ERROR_CODE_SUCCESS; 8535 } 8536 8537 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8538 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8539 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8540 // set tasks and start 8541 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8542 hci_run(); 8543 return ERROR_CODE_SUCCESS; 8544 } 8545 8546 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8547 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8548 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8549 // set tasks and start 8550 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8551 hci_run(); 8552 return ERROR_CODE_SUCCESS; 8553 } 8554 8555 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8556 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8557 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8558 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8559 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8560 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8561 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8562 // set tasks and start 8563 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8564 hci_run(); 8565 return ERROR_CODE_SUCCESS; 8566 } 8567 8568 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 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 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8572 return ERROR_CODE_SUCCESS; 8573 } 8574 8575 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8576 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8577 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8578 advertising_set->periodic_data = periodic_data; 8579 advertising_set->periodic_data_len = periodic_data_length; 8580 // set tasks and start 8581 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8582 hci_run(); 8583 return ERROR_CODE_SUCCESS; 8584 } 8585 8586 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8587 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8588 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8589 // set tasks and start 8590 advertising_set->periodic_include_adi = include_adi; 8591 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8592 hci_run(); 8593 return ERROR_CODE_SUCCESS; 8594 } 8595 8596 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8597 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8598 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8599 // set tasks and start 8600 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8601 hci_run(); 8602 return ERROR_CODE_SUCCESS; 8603 } 8604 8605 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8606 hci_stack->le_past_mode = mode; 8607 hci_stack->le_past_skip = skip; 8608 hci_stack->le_past_sync_timeout = sync_timeout; 8609 hci_stack->le_past_cte_type = cte_type; 8610 hci_stack->le_past_set_default_params = true; 8611 hci_run(); 8612 return ERROR_CODE_SUCCESS; 8613 } 8614 8615 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8616 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8617 if (hci_connection == NULL){ 8618 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8619 } 8620 hci_connection->le_past_sync_handle = sync_handle; 8621 hci_connection->le_past_service_data = service_data; 8622 hci_run(); 8623 return ERROR_CODE_SUCCESS; 8624 } 8625 8626 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8627 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8628 if (hci_connection == NULL){ 8629 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8630 } 8631 hci_connection->le_past_advertising_handle = advertising_handle; 8632 hci_connection->le_past_service_data = service_data; 8633 hci_run(); 8634 return ERROR_CODE_SUCCESS; 8635 } 8636 8637 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8638 8639 #endif 8640 8641 #endif 8642 8643 void hci_le_set_own_address_type(uint8_t own_address_type){ 8644 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8645 if (own_address_type == hci_stack->le_own_addr_type) return; 8646 hci_stack->le_own_addr_type = own_address_type; 8647 8648 #ifdef ENABLE_LE_PERIPHERAL 8649 // update advertisement parameters, too 8650 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8651 hci_run(); 8652 #endif 8653 #ifdef ENABLE_LE_CENTRAL 8654 // note: we don't update scan parameters or modify ongoing connection attempts 8655 #endif 8656 } 8657 8658 void hci_le_random_address_set(const bd_addr_t random_address){ 8659 memcpy(hci_stack->le_random_address, random_address, 6); 8660 hci_stack->le_random_address_set = true; 8661 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8662 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8663 if (hci_extended_advertising_supported()){ 8664 // force advertising set creation for LE Set Advertising Set Random Address 8665 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8666 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8667 } 8668 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8669 } 8670 #endif 8671 hci_run(); 8672 } 8673 8674 #endif 8675 8676 uint8_t gap_disconnect(hci_con_handle_t handle){ 8677 hci_connection_t * conn = hci_connection_for_handle(handle); 8678 if (!conn){ 8679 hci_emit_disconnection_complete(handle, 0); 8680 return 0; 8681 } 8682 // ignore if already disconnected 8683 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8684 return 0; 8685 } 8686 conn->state = SEND_DISCONNECT; 8687 hci_run(); 8688 return 0; 8689 } 8690 8691 int gap_read_rssi(hci_con_handle_t con_handle){ 8692 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8693 if (hci_connection == NULL) return 0; 8694 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8695 hci_run(); 8696 return 1; 8697 } 8698 8699 /** 8700 * @brief Get connection type 8701 * @param con_handle 8702 * @result connection_type 8703 */ 8704 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8705 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8706 if (!conn) return GAP_CONNECTION_INVALID; 8707 switch (conn->address_type){ 8708 case BD_ADDR_TYPE_LE_PUBLIC: 8709 case BD_ADDR_TYPE_LE_RANDOM: 8710 return GAP_CONNECTION_LE; 8711 case BD_ADDR_TYPE_SCO: 8712 return GAP_CONNECTION_SCO; 8713 case BD_ADDR_TYPE_ACL: 8714 return GAP_CONNECTION_ACL; 8715 default: 8716 return GAP_CONNECTION_INVALID; 8717 } 8718 } 8719 8720 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8721 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8722 if (!conn) return HCI_ROLE_INVALID; 8723 return (hci_role_t) conn->role; 8724 } 8725 8726 8727 #ifdef ENABLE_CLASSIC 8728 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8729 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8730 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8731 conn->request_role = role; 8732 hci_run(); 8733 return ERROR_CODE_SUCCESS; 8734 } 8735 #endif 8736 8737 #ifdef ENABLE_BLE 8738 8739 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){ 8740 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8741 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8742 8743 conn->le_phy_update_all_phys = all_phys; 8744 conn->le_phy_update_tx_phys = tx_phys; 8745 conn->le_phy_update_rx_phys = rx_phys; 8746 conn->le_phy_update_phy_options = (uint8_t) phy_options; 8747 8748 hci_run(); 8749 8750 return 0; 8751 } 8752 8753 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8754 // check if already in list 8755 btstack_linked_list_iterator_t it; 8756 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8757 while (btstack_linked_list_iterator_has_next(&it)) { 8758 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8759 if (entry->address_type != address_type) { 8760 continue; 8761 } 8762 if (memcmp(entry->address, address, 6) != 0) { 8763 continue; 8764 } 8765 8766 // if already on controller: 8767 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 8768 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 8769 // drop remove request 8770 entry->state = LE_WHITELIST_ON_CONTROLLER; 8771 return ERROR_CODE_SUCCESS; 8772 } else { 8773 // disallow as already on controller 8774 return ERROR_CODE_COMMAND_DISALLOWED; 8775 } 8776 } 8777 8778 // assume scheduled to add 8779 return ERROR_CODE_COMMAND_DISALLOWED; 8780 } 8781 8782 // alloc and add to list 8783 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8784 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8785 entry->address_type = address_type; 8786 (void)memcpy(entry->address, address, 6); 8787 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8788 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8789 return ERROR_CODE_SUCCESS; 8790 } 8791 8792 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8793 btstack_linked_list_iterator_t it; 8794 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8795 while (btstack_linked_list_iterator_has_next(&it)){ 8796 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8797 if (entry->address_type != address_type) { 8798 continue; 8799 } 8800 if (memcmp(entry->address, address, 6) != 0) { 8801 continue; 8802 } 8803 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8804 // remove from controller if already present 8805 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8806 } else { 8807 // directly remove entry from whitelist 8808 btstack_linked_list_iterator_remove(&it); 8809 btstack_memory_whitelist_entry_free(entry); 8810 } 8811 return ERROR_CODE_SUCCESS; 8812 } 8813 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8814 } 8815 8816 static void hci_whitelist_clear(void){ 8817 btstack_linked_list_iterator_t it; 8818 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8819 while (btstack_linked_list_iterator_has_next(&it)){ 8820 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8821 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8822 // remove from controller if already present 8823 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8824 continue; 8825 } 8826 // directly remove entry from whitelist 8827 btstack_linked_list_iterator_remove(&it); 8828 btstack_memory_whitelist_entry_free(entry); 8829 } 8830 } 8831 8832 /** 8833 * @brief Clear Whitelist 8834 * @return 0 if ok 8835 */ 8836 uint8_t gap_whitelist_clear(void){ 8837 hci_whitelist_clear(); 8838 hci_run(); 8839 return ERROR_CODE_SUCCESS; 8840 } 8841 8842 /** 8843 * @brief Add Device to Whitelist 8844 * @param address_typ 8845 * @param address 8846 * @return 0 if ok 8847 */ 8848 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8849 uint8_t status = hci_whitelist_add(address_type, address); 8850 if (status){ 8851 return status; 8852 } 8853 hci_run(); 8854 return ERROR_CODE_SUCCESS; 8855 } 8856 8857 /** 8858 * @brief Remove Device from Whitelist 8859 * @param address_typ 8860 * @param address 8861 * @return 0 if ok 8862 */ 8863 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8864 uint8_t status = hci_whitelist_remove(address_type, address); 8865 if (status){ 8866 return status; 8867 } 8868 hci_run(); 8869 return ERROR_CODE_SUCCESS; 8870 } 8871 8872 #ifdef ENABLE_LE_CENTRAL 8873 /** 8874 * @brief Connect with Whitelist 8875 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8876 * @return - if ok 8877 */ 8878 uint8_t gap_connect_with_whitelist(void){ 8879 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8880 return ERROR_CODE_COMMAND_DISALLOWED; 8881 } 8882 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8883 hci_run(); 8884 return ERROR_CODE_SUCCESS; 8885 } 8886 8887 /** 8888 * @brief Auto Connection Establishment - Start Connecting to device 8889 * @param address_typ 8890 * @param address 8891 * @return 0 if ok 8892 */ 8893 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8894 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8895 return ERROR_CODE_COMMAND_DISALLOWED; 8896 } 8897 8898 uint8_t status = hci_whitelist_add(address_type, address); 8899 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8900 return status; 8901 } 8902 8903 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8904 8905 hci_run(); 8906 return ERROR_CODE_SUCCESS; 8907 } 8908 8909 /** 8910 * @brief Auto Connection Establishment - Stop Connecting to device 8911 * @param address_typ 8912 * @param address 8913 * @return 0 if ok 8914 */ 8915 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8916 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8917 return ERROR_CODE_COMMAND_DISALLOWED; 8918 } 8919 8920 hci_whitelist_remove(address_type, address); 8921 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8922 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8923 } 8924 hci_run(); 8925 return 0; 8926 } 8927 8928 /** 8929 * @brief Auto Connection Establishment - Stop everything 8930 * @note Convenience function to stop all active auto connection attempts 8931 */ 8932 uint8_t gap_auto_connection_stop_all(void){ 8933 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8934 return ERROR_CODE_COMMAND_DISALLOWED; 8935 } 8936 hci_whitelist_clear(); 8937 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8938 hci_run(); 8939 return ERROR_CODE_SUCCESS; 8940 } 8941 8942 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8943 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8944 if (!conn) return 0; 8945 return conn->le_connection_interval; 8946 } 8947 #endif 8948 #endif 8949 8950 #ifdef ENABLE_CLASSIC 8951 /** 8952 * @brief Set Extended Inquiry Response data 8953 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8954 * @note has to be done before stack starts up 8955 */ 8956 void gap_set_extended_inquiry_response(const uint8_t * data){ 8957 hci_stack->eir_data = data; 8958 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8959 hci_run(); 8960 } 8961 8962 /** 8963 * @brief Start GAP Classic Inquiry 8964 * @param duration in 1.28s units 8965 * @return 0 if ok 8966 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8967 */ 8968 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8969 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8970 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8971 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8972 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8973 } 8974 hci_stack->inquiry_state = duration_in_1280ms_units; 8975 hci_stack->inquiry_max_period_length = 0; 8976 hci_stack->inquiry_min_period_length = 0; 8977 hci_run(); 8978 return 0; 8979 } 8980 8981 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8982 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8983 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8984 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8985 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8986 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8987 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8988 8989 hci_stack->inquiry_state = duration; 8990 hci_stack->inquiry_max_period_length = max_period_length; 8991 hci_stack->inquiry_min_period_length = min_period_length; 8992 hci_run(); 8993 return 0; 8994 } 8995 8996 /** 8997 * @brief Stop GAP Classic Inquiry 8998 * @return 0 if ok 8999 */ 9000 int gap_inquiry_stop(void){ 9001 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9002 // emit inquiry complete event, before it even started 9003 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9004 hci_emit_event(event, sizeof(event), 1); 9005 return 0; 9006 } 9007 switch (hci_stack->inquiry_state){ 9008 case GAP_INQUIRY_STATE_ACTIVE: 9009 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9010 hci_run(); 9011 return ERROR_CODE_SUCCESS; 9012 case GAP_INQUIRY_STATE_PERIODIC: 9013 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9014 hci_run(); 9015 return ERROR_CODE_SUCCESS; 9016 default: 9017 return ERROR_CODE_COMMAND_DISALLOWED; 9018 } 9019 } 9020 9021 void gap_inquiry_set_lap(uint32_t lap){ 9022 hci_stack->inquiry_lap = lap; 9023 } 9024 9025 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9026 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9027 hci_stack->inquiry_scan_window = inquiry_scan_window; 9028 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9029 hci_run(); 9030 } 9031 9032 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9033 { 9034 hci_stack->inquiry_tx_power_level = tx_power; 9035 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9036 hci_run(); 9037 } 9038 9039 9040 /** 9041 * @brief Remote Name Request 9042 * @param addr 9043 * @param page_scan_repetition_mode 9044 * @param clock_offset only used when bit 15 is set 9045 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9046 */ 9047 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9048 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9049 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9050 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9051 hci_stack->remote_name_clock_offset = clock_offset; 9052 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9053 hci_run(); 9054 return 0; 9055 } 9056 9057 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9058 hci_stack->gap_pairing_state = state; 9059 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9060 hci_run(); 9061 return 0; 9062 } 9063 9064 /** 9065 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9066 * @param addr 9067 * @param pin_data 9068 * @param pin_len 9069 * @return 0 if ok 9070 */ 9071 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9072 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9073 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9074 hci_stack->gap_pairing_pin_len = pin_len; 9075 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9076 } 9077 9078 /** 9079 * @brief Legacy Pairing Pin Code Response 9080 * @param addr 9081 * @param pin 9082 * @return 0 if ok 9083 */ 9084 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9085 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9086 } 9087 9088 /** 9089 * @brief Abort Legacy Pairing 9090 * @param addr 9091 * @param pin 9092 * @return 0 if ok 9093 */ 9094 int gap_pin_code_negative(bd_addr_t addr){ 9095 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9096 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9097 } 9098 9099 /** 9100 * @brief SSP Passkey Response 9101 * @param addr 9102 * @param passkey 9103 * @return 0 if ok 9104 */ 9105 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9106 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9107 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9108 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9109 } 9110 9111 /** 9112 * @brief Abort SSP Passkey Entry/Pairing 9113 * @param addr 9114 * @param pin 9115 * @return 0 if ok 9116 */ 9117 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9118 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9119 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9120 } 9121 9122 /** 9123 * @brief Accept SSP Numeric Comparison 9124 * @param addr 9125 * @param passkey 9126 * @return 0 if ok 9127 */ 9128 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9129 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9130 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9131 } 9132 9133 /** 9134 * @brief Abort SSP Numeric Comparison/Pairing 9135 * @param addr 9136 * @param pin 9137 * @return 0 if ok 9138 */ 9139 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9140 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9141 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9142 } 9143 9144 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9145 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9146 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9147 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9148 connectionSetAuthenticationFlags(conn, flag); 9149 hci_run(); 9150 return ERROR_CODE_SUCCESS; 9151 } 9152 #endif 9153 9154 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9155 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9156 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9157 } 9158 9159 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9160 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9161 } 9162 #endif 9163 9164 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9165 /** 9166 * @brief Report Remote OOB Data 9167 * @param bd_addr 9168 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9169 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9170 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9171 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9172 */ 9173 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){ 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 connection->classic_oob_c_192 = c_192; 9179 connection->classic_oob_r_192 = r_192; 9180 9181 // ignore P-256 if not supported by us 9182 if (hci_stack->secure_connections_active){ 9183 connection->classic_oob_c_256 = c_256; 9184 connection->classic_oob_r_256 = r_256; 9185 } 9186 9187 return ERROR_CODE_SUCCESS; 9188 } 9189 /** 9190 * @brief Generate new OOB data 9191 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9192 */ 9193 void gap_ssp_generate_oob_data(void){ 9194 hci_stack->classic_read_local_oob_data = true; 9195 hci_run(); 9196 } 9197 9198 #endif 9199 9200 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9201 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9202 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9203 if (connection == NULL) { 9204 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9205 } 9206 9207 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9208 connection->link_key_type = type; 9209 9210 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9211 } 9212 9213 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9214 /** 9215 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9216 * @param inquiry_mode see bluetooth_defines.h 9217 */ 9218 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9219 hci_stack->inquiry_mode = inquiry_mode; 9220 } 9221 9222 /** 9223 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9224 */ 9225 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9226 hci_stack->sco_voice_setting = voice_setting; 9227 } 9228 9229 /** 9230 * @brief Get SCO Voice Setting 9231 * @return current voice setting 9232 */ 9233 uint16_t hci_get_sco_voice_setting(void){ 9234 return hci_stack->sco_voice_setting; 9235 } 9236 9237 static int hci_have_usb_transport(void){ 9238 if (!hci_stack->hci_transport) return 0; 9239 const char * transport_name = hci_stack->hci_transport->name; 9240 if (!transport_name) return 0; 9241 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9242 } 9243 9244 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9245 uint16_t sco_packet_length = 0; 9246 9247 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9248 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9249 int multiplier; 9250 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9251 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9252 multiplier = 2; 9253 } else { 9254 multiplier = 1; 9255 } 9256 #endif 9257 9258 #ifdef ENABLE_SCO_OVER_HCI 9259 if (hci_have_usb_transport()){ 9260 // see Core Spec for H2 USB Transfer. 9261 // 3 byte SCO header + 24 bytes per connection 9262 // @note multiple sco connections not supported currently 9263 sco_packet_length = 3 + 24 * multiplier; 9264 } else { 9265 // 3 byte SCO header + SCO packet length over the air 9266 sco_packet_length = 3 + payload_size * multiplier; 9267 // assert that it still fits inside an SCO buffer 9268 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9269 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9270 } 9271 } 9272 #endif 9273 #ifdef HAVE_SCO_TRANSPORT 9274 // 3 byte SCO header + SCO packet length over the air 9275 sco_packet_length = 3 + payload_size * multiplier; 9276 // assert that it still fits inside an SCO buffer 9277 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9278 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9279 } 9280 #endif 9281 return sco_packet_length; 9282 } 9283 9284 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9285 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9286 if (connection != NULL){ 9287 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9288 } 9289 return 0; 9290 } 9291 9292 uint16_t hci_get_sco_packet_length(void){ 9293 btstack_linked_list_iterator_t it; 9294 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9295 while (btstack_linked_list_iterator_has_next(&it)){ 9296 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9297 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9298 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9299 } 9300 } 9301 return 0; 9302 } 9303 9304 /** 9305 * @brief Sets the master/slave policy 9306 * @param policy (0: attempt to become master, 1: let connecting device decide) 9307 */ 9308 void hci_set_master_slave_policy(uint8_t policy){ 9309 hci_stack->master_slave_policy = policy; 9310 } 9311 9312 #endif 9313 9314 HCI_STATE hci_get_state(void){ 9315 return hci_stack->state; 9316 } 9317 9318 #ifdef ENABLE_CLASSIC 9319 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9320 hci_stack->gap_classic_accept_callback = accept_callback; 9321 } 9322 #endif 9323 9324 /** 9325 * @brief Set callback for Bluetooth Hardware Error 9326 */ 9327 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9328 hci_stack->hardware_error_callback = fn; 9329 } 9330 9331 void hci_disconnect_all(void){ 9332 btstack_linked_list_iterator_t it; 9333 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9334 while (btstack_linked_list_iterator_has_next(&it)){ 9335 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9336 if (con->state == SENT_DISCONNECT) continue; 9337 con->state = SEND_DISCONNECT; 9338 } 9339 hci_run(); 9340 } 9341 9342 uint16_t hci_get_manufacturer(void){ 9343 return hci_stack->manufacturer; 9344 } 9345 9346 #ifdef ENABLE_BLE 9347 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9348 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9349 if (!hci_con) return NULL; 9350 return &hci_con->sm_connection; 9351 } 9352 9353 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9354 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9355 #endif 9356 9357 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9358 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9359 if (hci_connection == NULL) return 0; 9360 if (hci_is_le_connection(hci_connection)){ 9361 #ifdef ENABLE_BLE 9362 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9363 if (sm_conn->sm_connection_encrypted) { 9364 return sm_conn->sm_actual_encryption_key_size; 9365 } 9366 #endif 9367 } else { 9368 #ifdef ENABLE_CLASSIC 9369 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9370 return hci_connection->encryption_key_size; 9371 } 9372 #endif 9373 } 9374 return 0; 9375 } 9376 9377 bool gap_authenticated(hci_con_handle_t con_handle){ 9378 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9379 if (hci_connection == NULL) return false; 9380 9381 switch (hci_connection->address_type){ 9382 #ifdef ENABLE_BLE 9383 case BD_ADDR_TYPE_LE_PUBLIC: 9384 case BD_ADDR_TYPE_LE_RANDOM: 9385 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9386 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9387 #endif 9388 #ifdef ENABLE_CLASSIC 9389 case BD_ADDR_TYPE_SCO: 9390 case BD_ADDR_TYPE_ACL: 9391 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9392 #endif 9393 default: 9394 return false; 9395 } 9396 } 9397 9398 bool gap_secure_connection(hci_con_handle_t con_handle){ 9399 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9400 if (hci_connection == NULL) return 0; 9401 9402 switch (hci_connection->address_type){ 9403 #ifdef ENABLE_BLE 9404 case BD_ADDR_TYPE_LE_PUBLIC: 9405 case BD_ADDR_TYPE_LE_RANDOM: 9406 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9407 return hci_connection->sm_connection.sm_connection_sc != 0; 9408 #endif 9409 #ifdef ENABLE_CLASSIC 9410 case BD_ADDR_TYPE_SCO: 9411 case BD_ADDR_TYPE_ACL: 9412 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9413 #endif 9414 default: 9415 return false; 9416 } 9417 } 9418 9419 bool gap_bonded(hci_con_handle_t con_handle){ 9420 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9421 if (hci_connection == NULL) return 0; 9422 9423 #ifdef ENABLE_CLASSIC 9424 link_key_t link_key; 9425 link_key_type_t link_key_type; 9426 #endif 9427 switch (hci_connection->address_type){ 9428 #ifdef ENABLE_BLE 9429 case BD_ADDR_TYPE_LE_PUBLIC: 9430 case BD_ADDR_TYPE_LE_RANDOM: 9431 return hci_connection->sm_connection.sm_le_db_index >= 0; 9432 #endif 9433 #ifdef ENABLE_CLASSIC 9434 case BD_ADDR_TYPE_SCO: 9435 case BD_ADDR_TYPE_ACL: 9436 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9437 #endif 9438 default: 9439 return false; 9440 } 9441 } 9442 9443 #ifdef ENABLE_BLE 9444 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9445 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9446 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9447 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9448 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9449 return sm_conn->sm_connection_authorization_state; 9450 } 9451 #endif 9452 9453 #ifdef ENABLE_CLASSIC 9454 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){ 9455 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9456 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9457 conn->sniff_min_interval = sniff_min_interval; 9458 conn->sniff_max_interval = sniff_max_interval; 9459 conn->sniff_attempt = sniff_attempt; 9460 conn->sniff_timeout = sniff_timeout; 9461 hci_run(); 9462 return 0; 9463 } 9464 9465 /** 9466 * @brief Exit Sniff mode 9467 * @param con_handle 9468 @ @return 0 if ok 9469 */ 9470 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9471 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9472 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9473 conn->sniff_min_interval = 0xffff; 9474 hci_run(); 9475 return 0; 9476 } 9477 9478 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){ 9479 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9480 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9481 conn->sniff_subrating_max_latency = max_latency; 9482 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9483 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9484 hci_run(); 9485 return ERROR_CODE_SUCCESS; 9486 } 9487 9488 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){ 9489 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9490 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9491 conn->qos_service_type = service_type; 9492 conn->qos_token_rate = token_rate; 9493 conn->qos_peak_bandwidth = peak_bandwidth; 9494 conn->qos_latency = latency; 9495 conn->qos_delay_variation = delay_variation; 9496 hci_run(); 9497 return ERROR_CODE_SUCCESS; 9498 } 9499 9500 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9501 hci_stack->new_page_scan_interval = page_scan_interval; 9502 hci_stack->new_page_scan_window = page_scan_window; 9503 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9504 hci_run(); 9505 } 9506 9507 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9508 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9509 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9510 hci_run(); 9511 } 9512 9513 void gap_set_page_timeout(uint16_t page_timeout){ 9514 hci_stack->page_timeout = page_timeout; 9515 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9516 hci_run(); 9517 } 9518 9519 #endif 9520 9521 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9522 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9523 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9524 if (le_device_db_index >= le_device_db_max_count()) return; 9525 uint8_t offset = le_device_db_index >> 3; 9526 uint8_t mask = 1 << (le_device_db_index & 7); 9527 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9528 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9529 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9530 // note: go back to remove entries, otherwise, a remove + add will skip the add 9531 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9532 } 9533 } 9534 9535 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9536 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9537 if (le_device_db_index >= le_device_db_max_count()) return; 9538 uint8_t offset = le_device_db_index >> 3; 9539 uint8_t mask = 1 << (le_device_db_index & 7); 9540 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9541 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9542 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9543 } 9544 } 9545 9546 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9547 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9548 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9549 } 9550 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9551 // restart le resolving list update 9552 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9553 } 9554 return ERROR_CODE_SUCCESS; 9555 } 9556 9557 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9558 hci_stack->le_privacy_mode = privacy_mode; 9559 } 9560 #endif 9561 9562 #ifdef ENABLE_BLE 9563 #ifdef ENABLE_LE_CENTRAL 9564 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9565 9566 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9567 // check if already in list 9568 btstack_linked_list_iterator_t it; 9569 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9570 while (btstack_linked_list_iterator_has_next(&it)) { 9571 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9572 if (entry->sid != advertising_sid) { 9573 continue; 9574 } 9575 if (entry->address_type != address_type) { 9576 continue; 9577 } 9578 if (memcmp(entry->address, address, 6) != 0) { 9579 continue; 9580 } 9581 // disallow if already scheduled to add 9582 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9583 return ERROR_CODE_COMMAND_DISALLOWED; 9584 } 9585 // still on controller, but scheduled to remove -> re-add 9586 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9587 return ERROR_CODE_SUCCESS; 9588 } 9589 // alloc and add to list 9590 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9591 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9592 entry->sid = advertising_sid; 9593 entry->address_type = address_type; 9594 (void)memcpy(entry->address, address, 6); 9595 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9596 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9597 return ERROR_CODE_SUCCESS; 9598 } 9599 9600 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9601 btstack_linked_list_iterator_t it; 9602 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9603 while (btstack_linked_list_iterator_has_next(&it)){ 9604 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9605 if (entry->sid != advertising_sid) { 9606 continue; 9607 } 9608 if (entry->address_type != address_type) { 9609 continue; 9610 } 9611 if (memcmp(entry->address, address, 6) != 0) { 9612 continue; 9613 } 9614 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9615 // remove from controller if already present 9616 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9617 } else { 9618 // directly remove entry from whitelist 9619 btstack_linked_list_iterator_remove(&it); 9620 btstack_memory_periodic_advertiser_list_entry_free(entry); 9621 } 9622 return ERROR_CODE_SUCCESS; 9623 } 9624 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9625 } 9626 9627 static void hci_periodic_advertiser_list_clear(void){ 9628 btstack_linked_list_iterator_t it; 9629 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9630 while (btstack_linked_list_iterator_has_next(&it)){ 9631 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9632 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9633 // remove from controller if already present 9634 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9635 continue; 9636 } 9637 // directly remove entry from whitelist 9638 btstack_linked_list_iterator_remove(&it); 9639 btstack_memory_periodic_advertiser_list_entry_free(entry); 9640 } 9641 } 9642 9643 uint8_t gap_periodic_advertiser_list_clear(void){ 9644 hci_periodic_advertiser_list_clear(); 9645 hci_run(); 9646 return ERROR_CODE_SUCCESS; 9647 } 9648 9649 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9650 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9651 if (status){ 9652 return status; 9653 } 9654 hci_run(); 9655 return ERROR_CODE_SUCCESS; 9656 } 9657 9658 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9659 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9660 if (status){ 9661 return status; 9662 } 9663 hci_run(); 9664 return ERROR_CODE_SUCCESS; 9665 } 9666 9667 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9668 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9669 // abort if already active 9670 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9671 return ERROR_CODE_COMMAND_DISALLOWED; 9672 } 9673 // store request 9674 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9675 hci_stack->le_periodic_sync_options = options; 9676 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9677 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9678 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9679 hci_stack->le_periodic_sync_skip = skip; 9680 hci_stack->le_periodic_sync_timeout = sync_timeout; 9681 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9682 9683 hci_run(); 9684 return ERROR_CODE_SUCCESS; 9685 } 9686 9687 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9688 // abort if not requested 9689 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9690 return ERROR_CODE_COMMAND_DISALLOWED; 9691 } 9692 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9693 hci_run(); 9694 return ERROR_CODE_SUCCESS; 9695 } 9696 9697 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9698 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9699 return ERROR_CODE_COMMAND_DISALLOWED; 9700 } 9701 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9702 hci_run(); 9703 return ERROR_CODE_SUCCESS; 9704 } 9705 9706 #endif 9707 #endif 9708 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9709 static hci_iso_stream_t * 9710 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9711 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9712 if (iso_stream != NULL){ 9713 iso_stream->iso_type = iso_type; 9714 iso_stream->state = state; 9715 iso_stream->group_id = group_id; 9716 iso_stream->stream_id = stream_id; 9717 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9718 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9719 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9720 } 9721 return iso_stream; 9722 } 9723 9724 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9725 btstack_linked_list_iterator_t it; 9726 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9727 while (btstack_linked_list_iterator_has_next(&it)){ 9728 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9729 if (iso_stream->cis_handle == con_handle ) { 9730 return iso_stream; 9731 } 9732 } 9733 return NULL; 9734 } 9735 9736 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9737 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9738 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9739 btstack_memory_hci_iso_stream_free(iso_stream); 9740 } 9741 9742 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9743 btstack_linked_list_iterator_t it; 9744 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9745 while (btstack_linked_list_iterator_has_next(&it)){ 9746 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9747 if ((iso_stream->group_id == group_id) && 9748 (iso_stream->iso_type == iso_type)){ 9749 btstack_linked_list_iterator_remove(&it); 9750 btstack_memory_hci_iso_stream_free(iso_stream); 9751 } 9752 } 9753 } 9754 9755 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9756 btstack_linked_list_iterator_t it; 9757 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9758 while (btstack_linked_list_iterator_has_next(&it)){ 9759 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9760 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9761 (iso_stream->group_id == group_id)){ 9762 btstack_linked_list_iterator_remove(&it); 9763 btstack_memory_hci_iso_stream_free(iso_stream); 9764 } 9765 } 9766 } 9767 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9768 btstack_linked_list_iterator_t it; 9769 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9770 while (btstack_linked_list_iterator_has_next(&it)){ 9771 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9772 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9773 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9774 } 9775 } 9776 } 9777 9778 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9779 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9780 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9781 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9782 return (sdu_len_offset + 2 + sdu_len) == size; 9783 } 9784 9785 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9786 if (hci_stack->iso_packet_handler == NULL) { 9787 return; 9788 } 9789 if (size < 4) { 9790 return; 9791 } 9792 9793 // parse header 9794 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9795 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9796 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9797 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9798 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9799 9800 // assert packet is complete 9801 if ((iso_data_len + 4u) != size){ 9802 return; 9803 } 9804 9805 if ((pb_flag & 0x01) == 0){ 9806 if (pb_flag == 0x02){ 9807 // The ISO_Data_Load field contains a header and a complete SDU. 9808 if (hci_iso_sdu_complete(packet, size)) { 9809 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9810 } 9811 } else { 9812 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9813 if (iso_stream == NULL){ 9814 return; 9815 } 9816 if (size > HCI_ISO_PAYLOAD_SIZE){ 9817 return; 9818 } 9819 memcpy(iso_stream->reassembly_buffer, packet, size); 9820 // fix pb_flag 9821 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9822 iso_stream->reassembly_pos = size; 9823 } 9824 } else { 9825 // iso_data_load contains continuation or last fragment of an SDU 9826 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9827 if (ts_flag != 0){ 9828 return; 9829 } 9830 // append fragment 9831 if (iso_stream == NULL){ 9832 return; 9833 } 9834 if (iso_stream->reassembly_pos == 0){ 9835 return; 9836 } 9837 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9838 // reset reassembly buffer 9839 iso_stream->reassembly_pos = 0; 9840 return; 9841 } 9842 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9843 iso_stream->reassembly_pos += iso_data_len; 9844 9845 // deliver if last fragment and SDU complete 9846 if (pb_flag == 0x03){ 9847 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9848 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9849 } 9850 iso_stream->reassembly_pos = 0; 9851 } 9852 } 9853 } 9854 9855 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9856 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9857 uint16_t pos = 0; 9858 event[pos++] = HCI_EVENT_META_GAP; 9859 event[pos++] = 4 + (2 * big->num_bis); 9860 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9861 event[pos++] = status; 9862 event[pos++] = big->big_handle; 9863 event[pos++] = big->num_bis; 9864 uint8_t i; 9865 for (i=0;i<big->num_bis;i++){ 9866 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9867 pos += 2; 9868 } 9869 hci_emit_event(event, pos, 0); 9870 } 9871 9872 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9873 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9874 uint16_t pos = 0; 9875 event[pos++] = HCI_EVENT_META_GAP; 9876 event[pos++] = 4 + (2 * cig->num_cis); 9877 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9878 event[pos++] = status; 9879 event[pos++] = cig->cig_id; 9880 event[pos++] = cig->num_cis; 9881 uint8_t i; 9882 for (i=0;i<cig->num_cis;i++){ 9883 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9884 pos += 2; 9885 } 9886 hci_emit_event(event, pos, 0); 9887 } 9888 9889 static void hci_emit_cis_created(uint8_t status, uint8_t cig_id, uint8_t cis_id, hci_con_handle_t cis_con_handle, 9890 hci_con_handle_t acl_con_handle) { 9891 uint8_t event [10]; 9892 uint16_t pos = 0; 9893 event[pos++] = HCI_EVENT_META_GAP; 9894 event[pos++] = 8; 9895 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9896 event[pos++] = status; 9897 event[pos++] = cig_id; 9898 event[pos++] = cis_id; 9899 little_endian_store_16(event, pos, cis_con_handle); 9900 pos += 2; 9901 little_endian_store_16(event, pos, acl_con_handle); 9902 pos += 2; 9903 hci_emit_event(event, pos, 0); 9904 } 9905 9906 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 9907 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 9908 // cache data before finalizing struct 9909 uint8_t cig_id = iso_stream->group_id; 9910 uint8_t cis_id = iso_stream->stream_id; 9911 hci_con_handle_t cis_handle = iso_stream->cis_handle; 9912 hci_con_handle_t acl_handle = iso_stream->acl_handle; 9913 if (status != ERROR_CODE_SUCCESS){ 9914 hci_iso_stream_finalize(iso_stream); 9915 } 9916 hci_emit_cis_created(status, cig_id, cis_id, cis_handle, acl_handle); 9917 } 9918 9919 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9920 uint8_t event [4]; 9921 uint16_t pos = 0; 9922 event[pos++] = HCI_EVENT_META_GAP; 9923 event[pos++] = 2; 9924 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9925 event[pos++] = big->big_handle; 9926 hci_emit_event(event, pos, 0); 9927 } 9928 9929 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9930 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9931 uint16_t pos = 0; 9932 event[pos++] = HCI_EVENT_META_GAP; 9933 event[pos++] = 4; 9934 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9935 event[pos++] = status; 9936 event[pos++] = big_sync->big_handle; 9937 event[pos++] = big_sync->num_bis; 9938 uint8_t i; 9939 for (i=0;i<big_sync->num_bis;i++){ 9940 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9941 pos += 2; 9942 } 9943 hci_emit_event(event, pos, 0); 9944 } 9945 9946 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9947 uint8_t event [4]; 9948 uint16_t pos = 0; 9949 event[pos++] = HCI_EVENT_META_GAP; 9950 event[pos++] = 2; 9951 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9952 event[pos++] = big_handle; 9953 hci_emit_event(event, pos, 0); 9954 } 9955 9956 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9957 uint8_t event[6]; 9958 uint16_t pos = 0; 9959 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9960 event[pos++] = sizeof(event) - 2; 9961 event[pos++] = big->big_handle; 9962 event[pos++] = bis_index; 9963 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9964 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9965 } 9966 9967 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9968 uint8_t event[4]; 9969 uint16_t pos = 0; 9970 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9971 event[pos++] = sizeof(event) - 2; 9972 little_endian_store_16(event, pos, cis_con_handle); 9973 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9974 } 9975 9976 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9977 btstack_linked_list_iterator_t it; 9978 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9979 while (btstack_linked_list_iterator_has_next(&it)){ 9980 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9981 if ( big->big_handle == big_handle ) { 9982 return big; 9983 } 9984 } 9985 return NULL; 9986 } 9987 9988 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9989 btstack_linked_list_iterator_t it; 9990 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9991 while (btstack_linked_list_iterator_has_next(&it)){ 9992 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9993 if ( big_sync->big_handle == big_handle ) { 9994 return big_sync; 9995 } 9996 } 9997 return NULL; 9998 } 9999 10000 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10001 hci_stack->iso_packets_to_queue = num_packets; 10002 } 10003 10004 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10005 btstack_linked_list_iterator_t it; 10006 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10007 while (btstack_linked_list_iterator_has_next(&it)){ 10008 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10009 if ( cig->cig_id == cig_id ) { 10010 return cig; 10011 } 10012 } 10013 return NULL; 10014 } 10015 10016 static void hci_iso_notify_can_send_now(void){ 10017 10018 // BIG 10019 10020 btstack_linked_list_iterator_t it; 10021 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10022 while (btstack_linked_list_iterator_has_next(&it)){ 10023 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10024 // track number completed packet timestamps 10025 if (big->num_completed_timestamp_current_valid){ 10026 big->num_completed_timestamp_current_valid = false; 10027 if (big->num_completed_timestamp_previous_valid){ 10028 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10029 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10030 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10031 big->num_completed_timestamp_previous_ms); 10032 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10033 // to catch up, skip packet on all BIS 10034 uint8_t i; 10035 for (i=0;i<big->num_bis;i++){ 10036 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10037 if (iso_stream){ 10038 iso_stream->num_packets_to_skip++; 10039 } 10040 } 10041 } 10042 } 10043 big->num_completed_timestamp_previous_valid = true; 10044 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10045 } 10046 10047 if (big->can_send_now_requested){ 10048 // check if no outgoing iso packets pending and no can send now have to be emitted 10049 uint8_t i; 10050 bool can_send = true; 10051 uint8_t num_iso_queued_minimum = 0; 10052 for (i=0;i<big->num_bis;i++){ 10053 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10054 if (iso_stream == NULL) continue; 10055 // handle case where individual ISO packet was sent too late: 10056 // for each additionally queued packet, a new one needs to get skipped 10057 if (i==0){ 10058 num_iso_queued_minimum = iso_stream->num_packets_sent; 10059 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10060 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10061 iso_stream->num_packets_to_skip += num_packets_to_skip; 10062 iso_stream->num_packets_sent -= num_packets_to_skip; 10063 } 10064 // check if we can send now 10065 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10066 can_send = false; 10067 break; 10068 } 10069 } 10070 if (can_send){ 10071 // propagate can send now to individual streams 10072 big->can_send_now_requested = false; 10073 for (i=0;i<big->num_bis;i++){ 10074 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10075 iso_stream->emit_ready_to_send = true; 10076 } 10077 } 10078 } 10079 } 10080 10081 if (hci_stack->hci_packet_buffer_reserved) return; 10082 10083 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10084 while (btstack_linked_list_iterator_has_next(&it)){ 10085 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10086 // report bis ready 10087 uint8_t i; 10088 for (i=0;i<big->num_bis;i++){ 10089 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10090 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10091 iso_stream->emit_ready_to_send = false; 10092 hci_emit_bis_can_send_now(big, i); 10093 break; 10094 } 10095 } 10096 } 10097 10098 // CIS 10099 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10100 while (btstack_linked_list_iterator_has_next(&it)) { 10101 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10102 if ((iso_stream->can_send_now_requested) && 10103 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10104 iso_stream->can_send_now_requested = false; 10105 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10106 } 10107 } 10108 } 10109 10110 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10111 if (hci_big_for_handle(big_params->big_handle) != NULL){ 10112 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10113 } 10114 if (big_params->num_bis == 0){ 10115 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10116 } 10117 if (big_params->num_bis > MAX_NR_BIS){ 10118 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10119 } 10120 10121 // reserve ISO Streams 10122 uint8_t i; 10123 uint8_t status = ERROR_CODE_SUCCESS; 10124 for (i=0;i<big_params->num_bis;i++){ 10125 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_params->big_handle, i); 10126 if (iso_stream == NULL) { 10127 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10128 break; 10129 } 10130 } 10131 10132 // free structs on error 10133 if (status != ERROR_CODE_SUCCESS){ 10134 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 10135 return status; 10136 } 10137 10138 le_audio_big_t * big = storage; 10139 big->big_handle = big_params->big_handle; 10140 big->params = big_params; 10141 big->state = LE_AUDIO_BIG_STATE_CREATE; 10142 big->num_bis = big_params->num_bis; 10143 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10144 10145 hci_run(); 10146 10147 return ERROR_CODE_SUCCESS; 10148 } 10149 10150 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10151 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 10152 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10153 } 10154 if (big_sync_params->num_bis == 0){ 10155 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10156 } 10157 if (big_sync_params->num_bis > MAX_NR_BIS){ 10158 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10159 } 10160 10161 le_audio_big_sync_t * big_sync = storage; 10162 big_sync->big_handle = big_sync_params->big_handle; 10163 big_sync->params = big_sync_params; 10164 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10165 big_sync->num_bis = big_sync_params->num_bis; 10166 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10167 10168 hci_run(); 10169 10170 return ERROR_CODE_SUCCESS; 10171 } 10172 10173 uint8_t gap_big_terminate(uint8_t big_handle){ 10174 le_audio_big_t * big = hci_big_for_handle(big_handle); 10175 if (big == NULL){ 10176 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10177 } 10178 switch (big->state){ 10179 case LE_AUDIO_BIG_STATE_CREATE: 10180 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10181 hci_emit_big_terminated(big); 10182 break; 10183 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10184 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10185 break; 10186 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10187 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10188 case LE_AUDIO_BIG_STATE_ACTIVE: 10189 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10190 hci_run(); 10191 break; 10192 default: 10193 return ERROR_CODE_COMMAND_DISALLOWED; 10194 } 10195 return ERROR_CODE_SUCCESS; 10196 } 10197 10198 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10199 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10200 if (big_sync == NULL){ 10201 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10202 } 10203 switch (big_sync->state){ 10204 case LE_AUDIO_BIG_STATE_CREATE: 10205 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10206 hci_emit_big_sync_stopped(big_handle); 10207 break; 10208 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10209 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10210 break; 10211 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10212 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10213 case LE_AUDIO_BIG_STATE_ACTIVE: 10214 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10215 hci_run(); 10216 break; 10217 default: 10218 return ERROR_CODE_COMMAND_DISALLOWED; 10219 } 10220 return ERROR_CODE_SUCCESS; 10221 } 10222 10223 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10224 le_audio_big_t * big = hci_big_for_handle(big_handle); 10225 if (big == NULL){ 10226 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10227 } 10228 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10229 return ERROR_CODE_COMMAND_DISALLOWED; 10230 } 10231 big->can_send_now_requested = true; 10232 hci_iso_notify_can_send_now(); 10233 return ERROR_CODE_SUCCESS; 10234 } 10235 10236 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10237 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10238 if (iso_stream == NULL){ 10239 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10240 } 10241 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10242 return ERROR_CODE_COMMAND_DISALLOWED; 10243 } 10244 iso_stream->can_send_now_requested = true; 10245 hci_iso_notify_can_send_now(); 10246 return ERROR_CODE_SUCCESS; 10247 } 10248 10249 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10250 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10251 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10252 } 10253 if (cig_params->num_cis == 0){ 10254 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10255 } 10256 if (cig_params->num_cis > MAX_NR_BIS){ 10257 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10258 } 10259 10260 // reserve ISO Streams 10261 uint8_t i; 10262 uint8_t status = ERROR_CODE_SUCCESS; 10263 for (i=0;i<cig_params->num_cis;i++){ 10264 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10265 if (iso_stream == NULL) { 10266 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10267 break; 10268 } 10269 } 10270 10271 // free structs on error 10272 if (status != ERROR_CODE_SUCCESS){ 10273 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10274 return status; 10275 } 10276 10277 le_audio_cig_t * cig = storage; 10278 cig->cig_id = cig_params->cig_id; 10279 cig->num_cis = cig_params->num_cis; 10280 cig->params = cig_params; 10281 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10282 for (i=0;i<cig->num_cis;i++){ 10283 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10284 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10285 cig->cis_setup_active[i] = false; 10286 cig->cis_established[i] = false; 10287 } 10288 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10289 10290 hci_run(); 10291 10292 return ERROR_CODE_SUCCESS; 10293 } 10294 10295 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10296 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10297 if (cig == NULL){ 10298 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10299 } 10300 10301 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10302 return ERROR_CODE_COMMAND_DISALLOWED; 10303 } 10304 10305 // store ACL Connection Handles 10306 uint8_t i; 10307 for (i=0;i<cig->num_cis;i++){ 10308 // check that all con handles exist and store 10309 hci_con_handle_t cis_handle = cis_con_handles[i]; 10310 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10311 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10312 } 10313 uint8_t j; 10314 bool found = false; 10315 for (j=0;j<cig->num_cis;j++){ 10316 if (cig->cis_con_handles[j] == cis_handle){ 10317 cig->acl_con_handles[j] = acl_con_handles[j]; 10318 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10319 btstack_assert(iso_stream != NULL); 10320 iso_stream->acl_handle = acl_con_handles[j]; 10321 found = true; 10322 break; 10323 } 10324 } 10325 if (!found){ 10326 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10327 } 10328 } 10329 10330 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10331 hci_run(); 10332 10333 return ERROR_CODE_SUCCESS; 10334 } 10335 10336 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10337 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10338 if (iso_stream == NULL){ 10339 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10340 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10341 } 10342 10343 // set next state and continue 10344 iso_stream->state = state; 10345 hci_run(); 10346 return ERROR_CODE_SUCCESS; 10347 } 10348 10349 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10350 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10351 } 10352 10353 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10354 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10355 } 10356 10357 10358 #endif 10359 #endif /* ENABLE_BLE */ 10360 10361 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10362 void hci_setup_test_connections_fuzz(void){ 10363 hci_connection_t * conn; 10364 10365 // default address: 66:55:44:33:00:01 10366 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10367 10368 // setup Controller info 10369 hci_stack->num_cmd_packets = 255; 10370 hci_stack->acl_packets_total_num = 255; 10371 10372 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10373 addr[5] = 0x01; 10374 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10375 conn->con_handle = addr[5]; 10376 conn->state = RECEIVED_CONNECTION_REQUEST; 10377 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10378 10379 // setup incoming Classic SCO connection with con handle 0x0002 10380 addr[5] = 0x02; 10381 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10382 conn->con_handle = addr[5]; 10383 conn->state = RECEIVED_CONNECTION_REQUEST; 10384 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10385 10386 // setup ready Classic ACL connection with con handle 0x0003 10387 addr[5] = 0x03; 10388 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10389 conn->con_handle = addr[5]; 10390 conn->state = OPEN; 10391 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10392 10393 // setup ready Classic SCO connection with con handle 0x0004 10394 addr[5] = 0x04; 10395 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10396 conn->con_handle = addr[5]; 10397 conn->state = OPEN; 10398 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10399 10400 // setup ready LE ACL connection with con handle 0x005 and public address 10401 addr[5] = 0x05; 10402 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10403 conn->con_handle = addr[5]; 10404 conn->state = OPEN; 10405 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10406 conn->sm_connection.sm_connection_encrypted = 1; 10407 } 10408 10409 void hci_free_connections_fuzz(void){ 10410 btstack_linked_list_iterator_t it; 10411 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10412 while (btstack_linked_list_iterator_has_next(&it)){ 10413 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10414 btstack_linked_list_iterator_remove(&it); 10415 btstack_memory_hci_connection_free(con); 10416 } 10417 } 10418 void hci_simulate_working_fuzz(void){ 10419 hci_stack->le_scanning_param_update = false; 10420 hci_init_done(); 10421 hci_stack->num_cmd_packets = 255; 10422 } 10423 #endif 10424