1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 171 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 172 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 173 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 174 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 175 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 176 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 178 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 179 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 180 181 // enumerate supported commands 182 #define X(name, offset, bit) name, 183 enum { 184 SUPPORTED_HCI_COMMANDS 185 SUPPORTED_HCI_COMMANDS_COUNT 186 }; 187 #undef X 188 189 // prototypes 190 #ifdef ENABLE_CLASSIC 191 static void hci_update_scan_enable(void); 192 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 193 static int hci_local_ssp_activated(void); 194 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 195 static bool hci_ssp_supported(hci_connection_t * connection); 196 static void hci_notify_if_sco_can_send_now(void); 197 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 198 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 199 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 200 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 201 static void hci_connection_timestamp(hci_connection_t *connection); 202 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 203 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 204 #endif 205 206 static int hci_power_control_on(void); 207 static void hci_power_control_off(void); 208 static void hci_state_reset(void); 209 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 210 static void hci_emit_transport_packet_sent(void); 211 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 212 static void hci_emit_nr_connections_changed(void); 213 static void hci_emit_hci_open_failed(void); 214 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 215 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 216 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 217 static void hci_run(void); 218 static int hci_is_le_connection(hci_connection_t * connection); 219 220 #ifdef ENABLE_CLASSIC 221 static int hci_have_usb_transport(void); 222 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 223 #endif 224 225 #ifdef ENABLE_BLE 226 #ifdef ENABLE_LE_CENTRAL 227 // called from test/ble_client/advertising_data_parser.c 228 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 229 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 230 static hci_connection_t * gap_get_outgoing_connection(void); 231 static void hci_le_scan_stop(void); 232 static bool hci_run_general_gap_le(void); 233 #endif 234 #ifdef ENABLE_LE_PERIPHERAL 235 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 236 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 237 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 238 #endif /* ENABLE_LE_PERIPHERAL */ 239 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 240 static uint8_t hci_iso_stream_create(hci_iso_type_t iso_type, hci_con_handle_t con_handle, uint8_t group_id, 241 hci_iso_stream_state_t state); 242 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 243 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 244 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 245 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 246 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 247 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size); 248 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 249 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 250 static void hci_iso_notify_can_send_now(void); 251 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 252 static void hci_emit_big_terminated(const le_audio_big_t * big); 253 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 254 static void hci_emit_big_sync_stopped(uint8_t big_handle); 255 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 256 static void 257 hci_emit_cis_created(uint8_t cig_id, hci_con_handle_t cis_con_handle, uint8_t status); 258 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 259 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 260 #endif /* ENABLE_BLE */ 261 262 // the STACK is here 263 #ifndef HAVE_MALLOC 264 static hci_stack_t hci_stack_static; 265 #endif 266 static hci_stack_t * hci_stack = NULL; 267 268 #ifdef ENABLE_CLASSIC 269 // default name 270 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 271 272 // test helper 273 static uint8_t disable_l2cap_timeouts = 0; 274 #endif 275 276 static bool btstack_is_null(uint8_t * data, uint16_t size){ 277 uint16_t i; 278 for (i=0; i < size ; i++){ 279 if (data[i] != 0) { 280 return false; 281 } 282 } 283 return true; 284 } 285 286 // reset connection state on create and on reconnect 287 // don't overwrite addr, con handle, role 288 static void hci_connection_init(hci_connection_t * conn){ 289 conn->authentication_flags = AUTH_FLAG_NONE; 290 conn->bonding_flags = 0; 291 conn->requested_security_level = LEVEL_0; 292 #ifdef ENABLE_CLASSIC 293 conn->request_role = HCI_ROLE_INVALID; 294 conn->sniff_subrating_max_latency = 0xffff; 295 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 296 conn->link_key_type = INVALID_LINK_KEY; 297 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 298 btstack_run_loop_set_timer_context(&conn->timeout, conn); 299 hci_connection_timestamp(conn); 300 #endif 301 conn->acl_recombination_length = 0; 302 conn->acl_recombination_pos = 0; 303 conn->num_packets_sent = 0; 304 305 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 306 #ifdef ENABLE_BLE 307 conn->le_phy_update_all_phys = 0xff; 308 #endif 309 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 310 conn->le_max_tx_octets = 27; 311 #endif 312 #ifdef ENABLE_CLASSIC_PAIRING_OOB 313 conn->classic_oob_c_192 = NULL; 314 conn->classic_oob_r_192 = NULL; 315 conn->classic_oob_c_256 = NULL; 316 conn->classic_oob_r_256 = NULL; 317 #endif 318 } 319 320 /** 321 * create connection for given address 322 * 323 * @return connection OR NULL, if no memory left 324 */ 325 static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 326 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 327 328 hci_connection_t * conn = btstack_memory_hci_connection_get(); 329 if (!conn) return NULL; 330 hci_connection_init(conn); 331 332 bd_addr_copy(conn->address, addr); 333 conn->address_type = addr_type; 334 conn->con_handle = HCI_CON_HANDLE_INVALID; 335 conn->role = HCI_ROLE_INVALID; 336 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 337 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 338 #endif 339 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 340 341 return conn; 342 } 343 344 345 /** 346 * get le connection parameter range 347 * 348 * @return le connection parameter range struct 349 */ 350 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 351 *range = hci_stack->le_connection_parameter_range; 352 } 353 354 /** 355 * set le connection parameter range 356 * 357 */ 358 359 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 360 hci_stack->le_connection_parameter_range = *range; 361 } 362 363 /** 364 * @brief Test if connection parameters are inside in existing rage 365 * @param conn_interval_min (unit: 1.25ms) 366 * @param conn_interval_max (unit: 1.25ms) 367 * @param conn_latency 368 * @param supervision_timeout (unit: 10ms) 369 * @return 1 if included 370 */ 371 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){ 372 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 373 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 374 375 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 376 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 377 378 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 379 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 380 381 return 1; 382 } 383 384 /** 385 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 386 * @note: default: 1 387 * @param max_peripheral_connections 388 */ 389 #ifdef ENABLE_LE_PERIPHERAL 390 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 391 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 392 } 393 #endif 394 395 /** 396 * get hci connections iterator 397 * 398 * @return hci connections iterator 399 */ 400 401 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 402 btstack_linked_list_iterator_init(it, &hci_stack->connections); 403 } 404 405 /** 406 * get connection for a given handle 407 * 408 * @return connection OR NULL, if not found 409 */ 410 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 411 btstack_linked_list_iterator_t it; 412 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 413 while (btstack_linked_list_iterator_has_next(&it)){ 414 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 415 if ( item->con_handle == con_handle ) { 416 return item; 417 } 418 } 419 return NULL; 420 } 421 422 /** 423 * get connection for given address 424 * 425 * @return connection OR NULL, if not found 426 */ 427 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 428 btstack_linked_list_iterator_t it; 429 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 430 while (btstack_linked_list_iterator_has_next(&it)){ 431 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 432 if (connection->address_type != addr_type) continue; 433 if (memcmp(addr, connection->address, 6) != 0) continue; 434 return connection; 435 } 436 return NULL; 437 } 438 439 #ifdef ENABLE_CLASSIC 440 441 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 442 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 443 } 444 445 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 446 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 447 } 448 449 #ifdef ENABLE_SCO_OVER_HCI 450 static int hci_number_sco_connections(void){ 451 int connections = 0; 452 btstack_linked_list_iterator_t it; 453 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 454 while (btstack_linked_list_iterator_has_next(&it)){ 455 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 456 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 457 connections++; 458 } 459 return connections; 460 } 461 #endif 462 463 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 464 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 465 #ifdef HAVE_EMBEDDED_TICK 466 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 467 // connections might be timed out 468 hci_emit_l2cap_check_timeout(connection); 469 } 470 #else 471 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 472 // connections might be timed out 473 hci_emit_l2cap_check_timeout(connection); 474 } 475 #endif 476 } 477 478 static void hci_connection_timestamp(hci_connection_t *connection){ 479 #ifdef HAVE_EMBEDDED_TICK 480 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 481 #else 482 connection->timestamp = btstack_run_loop_get_time_ms(); 483 #endif 484 } 485 486 /** 487 * add authentication flags and reset timer 488 * @note: assumes classic connection 489 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 490 */ 491 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 492 bd_addr_t addr; 493 reverse_bd_addr(bd_addr, addr); 494 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 495 if (conn) { 496 connectionSetAuthenticationFlags(conn, flags); 497 hci_connection_timestamp(conn); 498 } 499 } 500 501 static bool hci_pairing_active(hci_connection_t * hci_connection){ 502 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 503 } 504 505 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 506 if (hci_pairing_active(hci_connection)) return; 507 if (ssp){ 508 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 509 } else { 510 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 511 } 512 // if we are initiator, we have sent an HCI Authenticate Request 513 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 514 515 // if we are responder, use minimal service security level as required level 516 if (!initiator){ 517 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); 518 } 519 520 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 521 522 uint8_t event[12]; 523 event[0] = GAP_EVENT_PAIRING_STARTED; 524 event[1] = 10; 525 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 526 reverse_bd_addr(hci_connection->address, &event[4]); 527 event[10] = (uint8_t) ssp; 528 event[11] = (uint8_t) initiator; 529 hci_emit_event(event, sizeof(event), 1); 530 } 531 532 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 533 hci_connection->requested_security_level = LEVEL_0; 534 if (!hci_pairing_active(hci_connection)) return; 535 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 536 #ifdef ENABLE_CLASSIC_PAIRING_OOB 537 hci_connection->classic_oob_c_192 = NULL; 538 hci_connection->classic_oob_r_192 = NULL; 539 hci_connection->classic_oob_c_256 = NULL; 540 hci_connection->classic_oob_r_256 = NULL; 541 #endif 542 log_info("pairing complete, status %02x", status); 543 544 uint8_t event[11]; 545 event[0] = GAP_EVENT_PAIRING_COMPLETE; 546 event[1] = 9; 547 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 548 reverse_bd_addr(hci_connection->address, &event[4]); 549 event[10] = status; 550 hci_emit_event(event, sizeof(event), 1); 551 552 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 553 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 554 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 555 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 556 hci_connection->bonding_status = status; 557 } 558 } 559 560 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 561 hci_connection_t * conn = hci_connection_for_handle(handle); 562 if (!conn) return false; 563 return hci_pairing_active(conn); 564 } 565 566 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 567 if (!hci_stack->link_key_db) return; 568 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 569 hci_stack->link_key_db->delete_link_key(addr); 570 } 571 572 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 573 if (!hci_stack->link_key_db) return; 574 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 575 hci_stack->link_key_db->put_link_key(addr, link_key, type); 576 } 577 578 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 579 if (!hci_stack->link_key_db) return false; 580 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 581 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 582 return result; 583 } 584 585 void gap_delete_all_link_keys(void){ 586 bd_addr_t addr; 587 link_key_t link_key; 588 link_key_type_t type; 589 btstack_link_key_iterator_t it; 590 int ok = gap_link_key_iterator_init(&it); 591 if (!ok) { 592 log_error("could not initialize iterator"); 593 return; 594 } 595 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 596 gap_drop_link_key_for_bd_addr(addr); 597 } 598 gap_link_key_iterator_done(&it); 599 } 600 601 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 602 if (!hci_stack->link_key_db) return 0; 603 if (!hci_stack->link_key_db->iterator_init) return 0; 604 return hci_stack->link_key_db->iterator_init(it); 605 } 606 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){ 607 if (!hci_stack->link_key_db) return 0; 608 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 609 } 610 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 611 if (!hci_stack->link_key_db) return; 612 hci_stack->link_key_db->iterator_done(it); 613 } 614 #endif 615 616 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 617 switch (address_type){ 618 case BD_ADDR_TYPE_LE_PUBLIC: 619 case BD_ADDR_TYPE_LE_RANDOM: 620 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_PUBLIC: 621 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_RANDOM: 622 return true; 623 default: 624 return false; 625 } 626 } 627 628 static int hci_is_le_connection(hci_connection_t * connection){ 629 return hci_is_le_connection_type(connection->address_type); 630 } 631 632 /** 633 * count connections 634 */ 635 static int nr_hci_connections(void){ 636 int count = 0; 637 btstack_linked_item_t *it; 638 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 639 count++; 640 } 641 return count; 642 } 643 644 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 645 646 unsigned int num_packets_sent_classic = 0; 647 unsigned int num_packets_sent_le = 0; 648 649 btstack_linked_item_t *it; 650 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 651 hci_connection_t * connection = (hci_connection_t *) it; 652 if (hci_is_le_connection(connection)){ 653 num_packets_sent_le += connection->num_packets_sent; 654 } 655 if (connection->address_type == BD_ADDR_TYPE_ACL){ 656 num_packets_sent_classic += connection->num_packets_sent; 657 } 658 } 659 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 660 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 661 int free_slots_le = 0; 662 663 if (free_slots_classic < 0){ 664 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); 665 return 0; 666 } 667 668 if (hci_stack->le_acl_packets_total_num){ 669 // if we have LE slots, they are used 670 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 671 if (free_slots_le < 0){ 672 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); 673 return 0; 674 } 675 } else { 676 // otherwise, classic slots are used for LE, too 677 free_slots_classic -= num_packets_sent_le; 678 if (free_slots_classic < 0){ 679 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); 680 return 0; 681 } 682 } 683 684 switch (address_type){ 685 case BD_ADDR_TYPE_UNKNOWN: 686 log_error("hci_number_free_acl_slots: unknown address type"); 687 return 0; 688 689 case BD_ADDR_TYPE_ACL: 690 return (uint16_t) free_slots_classic; 691 692 default: 693 if (hci_stack->le_acl_packets_total_num > 0){ 694 return (uint16_t) free_slots_le; 695 } 696 return (uint16_t) free_slots_classic; 697 } 698 } 699 700 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 701 // get connection type 702 hci_connection_t * connection = hci_connection_for_handle(con_handle); 703 if (!connection){ 704 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 705 return 0; 706 } 707 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 708 } 709 710 #ifdef ENABLE_CLASSIC 711 static int hci_number_free_sco_slots(void){ 712 unsigned int num_sco_packets_sent = 0; 713 btstack_linked_item_t *it; 714 if (hci_stack->synchronous_flow_control_enabled){ 715 // explicit flow control 716 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 717 hci_connection_t * connection = (hci_connection_t *) it; 718 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 719 num_sco_packets_sent += connection->num_packets_sent; 720 } 721 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 722 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 723 return 0; 724 } 725 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 726 } else { 727 // implicit flow control -- TODO 728 int num_ready = 0; 729 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 730 hci_connection_t * connection = (hci_connection_t *) it; 731 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 732 if (connection->sco_tx_ready == 0) continue; 733 num_ready++; 734 } 735 return num_ready; 736 } 737 } 738 #endif 739 740 // only used to send HCI Host Number Completed Packets 741 static int hci_can_send_comand_packet_transport(void){ 742 if (hci_stack->hci_packet_buffer_reserved) return 0; 743 744 // check for async hci transport implementations 745 if (hci_stack->hci_transport->can_send_packet_now){ 746 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 747 return 0; 748 } 749 } 750 return 1; 751 } 752 753 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 754 bool hci_can_send_command_packet_now(void){ 755 if (hci_can_send_comand_packet_transport() == 0) return false; 756 return hci_stack->num_cmd_packets > 0u; 757 } 758 759 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 760 // check for async hci transport implementations 761 if (!hci_stack->hci_transport->can_send_packet_now) return true; 762 return hci_stack->hci_transport->can_send_packet_now(packet_type); 763 } 764 765 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 766 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 767 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 768 } 769 770 bool hci_can_send_acl_le_packet_now(void){ 771 if (hci_stack->hci_packet_buffer_reserved) return false; 772 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 773 } 774 775 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 776 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 777 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 778 } 779 780 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 781 if (hci_stack->hci_packet_buffer_reserved) return false; 782 return hci_can_send_prepared_acl_packet_now(con_handle); 783 } 784 785 #ifdef ENABLE_CLASSIC 786 bool hci_can_send_acl_classic_packet_now(void){ 787 if (hci_stack->hci_packet_buffer_reserved) return false; 788 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 789 } 790 791 bool hci_can_send_prepared_sco_packet_now(void){ 792 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 793 if (hci_have_usb_transport()){ 794 return hci_stack->sco_can_send_now; 795 } else { 796 return hci_number_free_sco_slots() > 0; 797 } 798 } 799 800 bool hci_can_send_sco_packet_now(void){ 801 if (hci_stack->hci_packet_buffer_reserved) return false; 802 return hci_can_send_prepared_sco_packet_now(); 803 } 804 805 void hci_request_sco_can_send_now_event(void){ 806 hci_stack->sco_waiting_for_can_send_now = 1; 807 hci_notify_if_sco_can_send_now(); 808 } 809 #endif 810 811 // used for internal checks in l2cap.c 812 bool hci_is_packet_buffer_reserved(void){ 813 return hci_stack->hci_packet_buffer_reserved; 814 } 815 816 // reserves outgoing packet buffer. 817 // @return 1 if successful 818 bool hci_reserve_packet_buffer(void){ 819 if (hci_stack->hci_packet_buffer_reserved) { 820 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 821 return false; 822 } 823 hci_stack->hci_packet_buffer_reserved = true; 824 return true; 825 } 826 827 void hci_release_packet_buffer(void){ 828 hci_stack->hci_packet_buffer_reserved = false; 829 } 830 831 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 832 static int hci_transport_synchronous(void){ 833 return hci_stack->hci_transport->can_send_packet_now == NULL; 834 } 835 836 // used for debugging 837 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 838 static void hci_controller_dump_packets(void){ 839 // format: "{handle:04x}:{count:02d} " 840 char summaries[3][7 * 8 + 1]; 841 uint16_t totals[3]; 842 uint8_t index; 843 for (index = 0 ; index < 3 ; index++){ 844 summaries[index][0] = 0; 845 totals[index] = 0; 846 } 847 btstack_linked_item_t *it; 848 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 849 hci_connection_t * connection = (hci_connection_t *) it; 850 switch (connection->address_type){ 851 case BD_ADDR_TYPE_ACL: 852 index = 0; 853 break; 854 case BD_ADDR_TYPE_SCO: 855 index = 2; 856 break; 857 default: 858 index = 1; 859 break; 860 } 861 totals[index] += connection->num_packets_sent; 862 char item_text[10]; 863 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 864 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 865 } 866 for (index = 0 ; index < 3 ; index++){ 867 if (summaries[index][0] == 0){ 868 summaries[index][0] = '-'; 869 summaries[index][1] = 0; 870 } 871 } 872 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]); 873 } 874 #endif 875 876 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 877 878 // 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); 879 880 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 881 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 882 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 883 max_acl_data_packet_length = hci_stack->le_data_packets_length; 884 } 885 886 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 887 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 888 max_acl_data_packet_length = connection->le_max_tx_octets; 889 } 890 #endif 891 892 log_debug("hci_send_acl_packet_fragments entered"); 893 894 uint8_t status = ERROR_CODE_SUCCESS; 895 // multiple packets could be send on a synchronous HCI transport 896 while (true){ 897 898 log_debug("hci_send_acl_packet_fragments loop entered"); 899 900 // get current data 901 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 902 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 903 bool more_fragments = false; 904 905 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 906 if (current_acl_data_packet_length > max_acl_data_packet_length){ 907 more_fragments = true; 908 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 909 } 910 911 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 912 if (acl_header_pos > 0u){ 913 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 914 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 915 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 916 } 917 918 // update header len 919 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 920 921 // count packet 922 connection->num_packets_sent++; 923 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 924 925 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 926 if (more_fragments){ 927 // update start of next fragment to send 928 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 929 } else { 930 // done 931 hci_stack->acl_fragmentation_pos = 0; 932 hci_stack->acl_fragmentation_total_size = 0; 933 } 934 935 // send packet 936 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 937 const int size = current_acl_data_packet_length + 4; 938 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 939 hci_stack->acl_fragmentation_tx_active = 1; 940 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 941 if (err != 0){ 942 // no error from HCI Transport expected 943 status = ERROR_CODE_HARDWARE_FAILURE; 944 } 945 946 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 947 hci_controller_dump_packets(); 948 #endif 949 950 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 951 952 // done yet? 953 if (!more_fragments) break; 954 955 // can send more? 956 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 957 } 958 959 log_debug("hci_send_acl_packet_fragments loop over"); 960 961 // release buffer now for synchronous transport 962 if (hci_transport_synchronous()){ 963 hci_stack->acl_fragmentation_tx_active = 0; 964 hci_release_packet_buffer(); 965 hci_emit_transport_packet_sent(); 966 } 967 968 return status; 969 } 970 971 // pre: caller has reserved the packet buffer 972 uint8_t hci_send_acl_packet_buffer(int size){ 973 btstack_assert(hci_stack->hci_packet_buffer_reserved); 974 975 uint8_t * packet = hci_stack->hci_packet_buffer; 976 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 977 978 // check for free places on Bluetooth module 979 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 980 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 981 hci_release_packet_buffer(); 982 hci_emit_transport_packet_sent(); 983 return BTSTACK_ACL_BUFFERS_FULL; 984 } 985 986 hci_connection_t *connection = hci_connection_for_handle( con_handle); 987 if (!connection) { 988 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 989 hci_release_packet_buffer(); 990 hci_emit_transport_packet_sent(); 991 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 992 } 993 994 #ifdef ENABLE_CLASSIC 995 hci_connection_timestamp(connection); 996 #endif 997 998 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 999 1000 // setup data 1001 hci_stack->acl_fragmentation_total_size = size; 1002 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 1003 1004 return hci_send_acl_packet_fragments(connection); 1005 } 1006 1007 #ifdef ENABLE_CLASSIC 1008 // pre: caller has reserved the packet buffer 1009 uint8_t hci_send_sco_packet_buffer(int size){ 1010 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1011 1012 uint8_t * packet = hci_stack->hci_packet_buffer; 1013 1014 // skip checks in loopback mode 1015 if (!hci_stack->loopback_mode){ 1016 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1017 1018 // check for free places on Bluetooth module 1019 if (!hci_can_send_prepared_sco_packet_now()) { 1020 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1021 hci_release_packet_buffer(); 1022 hci_emit_transport_packet_sent(); 1023 return BTSTACK_ACL_BUFFERS_FULL; 1024 } 1025 1026 // track send packet in connection struct 1027 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1028 if (!connection) { 1029 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1030 hci_release_packet_buffer(); 1031 hci_emit_transport_packet_sent(); 1032 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1033 } 1034 1035 if (hci_have_usb_transport()){ 1036 // token used 1037 hci_stack->sco_can_send_now = false; 1038 } else { 1039 if (hci_stack->synchronous_flow_control_enabled){ 1040 connection->num_packets_sent++; 1041 } else { 1042 connection->sco_tx_ready--; 1043 } 1044 } 1045 } 1046 1047 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1048 1049 #ifdef HAVE_SCO_TRANSPORT 1050 hci_stack->sco_transport->send_packet(packet, size); 1051 hci_release_packet_buffer(); 1052 hci_emit_transport_packet_sent(); 1053 1054 return 0; 1055 #else 1056 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1057 if (hci_transport_synchronous()){ 1058 hci_release_packet_buffer(); 1059 hci_emit_transport_packet_sent(); 1060 } 1061 1062 if (err != 0){ 1063 return ERROR_CODE_HARDWARE_FAILURE; 1064 } 1065 return ERROR_CODE_SUCCESS; 1066 #endif 1067 } 1068 #endif 1069 1070 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1071 static uint8_t hci_send_iso_packet_fragments(void){ 1072 1073 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1074 uint8_t status = ERROR_CODE_SUCCESS; 1075 // multiple packets could be send on a synchronous HCI transport 1076 while (true){ 1077 1078 // get current data 1079 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1080 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1081 bool more_fragments = false; 1082 1083 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1084 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1085 more_fragments = true; 1086 current_iso_data_packet_length = max_iso_data_packet_length; 1087 } 1088 1089 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1090 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1091 uint8_t pb_flags; 1092 if (iso_header_pos == 0u){ 1093 // first fragment, keep TS field 1094 pb_flags = more_fragments ? 0x00 : 0x02; 1095 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1096 } else { 1097 // later fragment, drop TS field 1098 pb_flags = more_fragments ? 0x01 : 0x03; 1099 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1100 } 1101 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1102 1103 // update header len 1104 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1105 1106 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1107 if (more_fragments){ 1108 // update start of next fragment to send 1109 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1110 } else { 1111 // done 1112 hci_stack->iso_fragmentation_pos = 0; 1113 hci_stack->iso_fragmentation_total_size = 0; 1114 } 1115 1116 // send packet 1117 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1118 const int size = current_iso_data_packet_length + 4; 1119 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1120 hci_stack->iso_fragmentation_tx_active = true; 1121 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1122 if (err != 0){ 1123 // no error from HCI Transport expected 1124 status = ERROR_CODE_HARDWARE_FAILURE; 1125 } 1126 1127 // done yet? 1128 if (!more_fragments) break; 1129 1130 // can send more? 1131 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1132 } 1133 1134 // release buffer now for synchronous transport 1135 if (hci_transport_synchronous()){ 1136 hci_stack->iso_fragmentation_tx_active = false; 1137 hci_release_packet_buffer(); 1138 hci_emit_transport_packet_sent(); 1139 } 1140 1141 return status; 1142 } 1143 1144 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1145 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1146 1147 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1148 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1149 if (iso_stream == NULL){ 1150 hci_release_packet_buffer(); 1151 hci_iso_notify_can_send_now(); 1152 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1153 } 1154 1155 // TODO: check for space on controller 1156 1157 // skip iso packets if needed 1158 if (iso_stream->num_packets_to_skip > 0){ 1159 iso_stream->num_packets_to_skip--; 1160 // pretend it was processed and trigger next one 1161 hci_release_packet_buffer(); 1162 hci_iso_notify_can_send_now(); 1163 return ERROR_CODE_SUCCESS; 1164 } 1165 1166 // track outgoing packet sent 1167 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1168 iso_stream->num_packets_sent++; 1169 1170 // setup data 1171 hci_stack->iso_fragmentation_total_size = size; 1172 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1173 1174 return hci_send_iso_packet_fragments(); 1175 } 1176 #endif 1177 1178 static void acl_handler(uint8_t *packet, uint16_t size){ 1179 1180 // get info 1181 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1182 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1183 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1184 uint16_t acl_length = READ_ACL_LENGTH(packet); 1185 1186 // ignore non-registered handle 1187 if (!conn){ 1188 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1189 return; 1190 } 1191 1192 // assert packet is complete 1193 if ((acl_length + 4u) != size){ 1194 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1195 return; 1196 } 1197 1198 #ifdef ENABLE_CLASSIC 1199 // update idle timestamp 1200 hci_connection_timestamp(conn); 1201 #endif 1202 1203 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1204 hci_stack->host_completed_packets = 1; 1205 conn->num_packets_completed++; 1206 #endif 1207 1208 // handle different packet types 1209 switch (acl_flags & 0x03u) { 1210 1211 case 0x01: // continuation fragment 1212 1213 // sanity checks 1214 if (conn->acl_recombination_pos == 0u) { 1215 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1216 return; 1217 } 1218 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1219 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1220 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1221 conn->acl_recombination_pos = 0; 1222 return; 1223 } 1224 1225 // append fragment payload (header already stored) 1226 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1227 &packet[4], acl_length); 1228 conn->acl_recombination_pos += acl_length; 1229 1230 // forward complete L2CAP packet if complete. 1231 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1232 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1233 // reset recombination buffer 1234 conn->acl_recombination_length = 0; 1235 conn->acl_recombination_pos = 0; 1236 } 1237 break; 1238 1239 case 0x02: { // first fragment 1240 1241 // sanity check 1242 if (conn->acl_recombination_pos) { 1243 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1244 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1245 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1246 } 1247 conn->acl_recombination_pos = 0; 1248 } 1249 1250 // peek into L2CAP packet! 1251 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1252 1253 // compare fragment size to L2CAP packet size 1254 if (acl_length >= (l2cap_length + 4u)){ 1255 // forward fragment as L2CAP packet 1256 hci_emit_acl_packet(packet, acl_length + 4u); 1257 } else { 1258 1259 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1260 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1261 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1262 return; 1263 } 1264 1265 // store first fragment and tweak acl length for complete package 1266 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1267 packet, acl_length + 4u); 1268 conn->acl_recombination_pos = acl_length + 4u; 1269 conn->acl_recombination_length = l2cap_length; 1270 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1271 } 1272 break; 1273 1274 } 1275 default: 1276 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1277 return; 1278 } 1279 1280 // execute main loop 1281 hci_run(); 1282 } 1283 1284 static void hci_connection_stop_timer(hci_connection_t * conn){ 1285 btstack_run_loop_remove_timer(&conn->timeout); 1286 #ifdef ENABLE_CLASSIC 1287 btstack_run_loop_remove_timer(&conn->timeout_sco); 1288 #endif 1289 } 1290 1291 static void hci_shutdown_connection(hci_connection_t *conn){ 1292 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1293 1294 #ifdef ENABLE_CLASSIC 1295 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1296 bd_addr_type_t addr_type = conn->address_type; 1297 #endif 1298 #ifdef HAVE_SCO_TRANSPORT 1299 hci_con_handle_t con_handle = conn->con_handle; 1300 #endif 1301 #endif 1302 1303 hci_connection_stop_timer(conn); 1304 1305 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1306 btstack_memory_hci_connection_free( conn ); 1307 1308 // now it's gone 1309 hci_emit_nr_connections_changed(); 1310 1311 #ifdef ENABLE_CLASSIC 1312 #ifdef ENABLE_SCO_OVER_HCI 1313 // update SCO 1314 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1315 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1316 } 1317 #endif 1318 #ifdef HAVE_SCO_TRANSPORT 1319 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1320 hci_stack->sco_transport->close(con_handle); 1321 } 1322 #endif 1323 #endif 1324 } 1325 1326 #ifdef ENABLE_CLASSIC 1327 1328 static const uint16_t packet_type_sizes[] = { 1329 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1330 HCI_ACL_DH1_SIZE, 0, 0, 0, 1331 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1332 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1333 }; 1334 static const uint8_t packet_type_feature_requirement_bit[] = { 1335 0, // 3 slot packets 1336 1, // 5 slot packets 1337 25, // EDR 2 mpbs 1338 26, // EDR 3 mbps 1339 39, // 3 slot EDR packts 1340 40, // 5 slot EDR packet 1341 }; 1342 static const uint16_t packet_type_feature_packet_mask[] = { 1343 0x0f00, // 3 slot packets 1344 0xf000, // 5 slot packets 1345 0x1102, // EDR 2 mpbs 1346 0x2204, // EDR 3 mbps 1347 0x0300, // 3 slot EDR packts 1348 0x3000, // 5 slot EDR packet 1349 }; 1350 1351 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1352 // enable packet types based on size 1353 uint16_t packet_types = 0; 1354 unsigned int i; 1355 for (i=0;i<16;i++){ 1356 if (packet_type_sizes[i] == 0) continue; 1357 if (packet_type_sizes[i] <= buffer_size){ 1358 packet_types |= 1 << i; 1359 } 1360 } 1361 // disable packet types due to missing local supported features 1362 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1363 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1364 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1365 if (feature_set) continue; 1366 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1367 packet_types &= ~packet_type_feature_packet_mask[i]; 1368 } 1369 // flip bits for "may not be used" 1370 packet_types ^= 0x3306; 1371 return packet_types; 1372 } 1373 1374 uint16_t hci_usable_acl_packet_types(void){ 1375 return hci_stack->packet_types; 1376 } 1377 #endif 1378 1379 uint8_t* hci_get_outgoing_packet_buffer(void){ 1380 // hci packet buffer is >= acl data packet length 1381 return hci_stack->hci_packet_buffer; 1382 } 1383 1384 uint16_t hci_max_acl_data_packet_length(void){ 1385 return hci_stack->acl_data_packet_length; 1386 } 1387 1388 #ifdef ENABLE_CLASSIC 1389 bool hci_extended_sco_link_supported(void){ 1390 // No. 31, byte 3, bit 7 1391 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1392 } 1393 #endif 1394 1395 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1396 // No. 54, byte 6, bit 6 1397 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1398 } 1399 1400 #ifdef ENABLE_CLASSIC 1401 static int gap_ssp_supported(void){ 1402 // No. 51, byte 6, bit 3 1403 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1404 } 1405 #endif 1406 1407 static int hci_classic_supported(void){ 1408 #ifdef ENABLE_CLASSIC 1409 // No. 37, byte 4, bit 5, = No BR/EDR Support 1410 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1411 #else 1412 return 0; 1413 #endif 1414 } 1415 1416 static int hci_le_supported(void){ 1417 #ifdef ENABLE_BLE 1418 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1419 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1420 #else 1421 return 0; 1422 #endif 1423 } 1424 1425 static bool hci_command_supported(uint8_t command_index){ 1426 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1427 } 1428 1429 #ifdef ENABLE_BLE 1430 1431 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1432 static bool hci_extended_advertising_supported(void){ 1433 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1434 } 1435 #endif 1436 1437 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1438 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1439 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1440 } else { 1441 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1442 } 1443 } 1444 1445 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1446 *addr_type = hci_stack->le_own_addr_type; 1447 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1448 } 1449 1450 #ifdef ENABLE_LE_PERIPHERAL 1451 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1452 *addr_type = hci_stack->le_advertisements_own_addr_type; 1453 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1454 }; 1455 #endif 1456 1457 #ifdef ENABLE_LE_CENTRAL 1458 1459 /** 1460 * @brief Get own addr type and address used for LE connections (Central) 1461 */ 1462 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1463 *addr_type = hci_stack->le_connection_own_addr_type; 1464 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1465 } 1466 1467 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1468 1469 uint16_t offset = 3; 1470 uint8_t num_reports = packet[offset]; 1471 offset += 1; 1472 1473 uint16_t i; 1474 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1475 for (i=0; (i<num_reports) && (offset < size);i++){ 1476 // sanity checks on data_length: 1477 uint8_t data_length = packet[offset + 8]; 1478 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1479 if ((offset + 9u + data_length + 1u) > size) return; 1480 // setup event 1481 uint8_t event_size = 10u + data_length; 1482 uint16_t pos = 0; 1483 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1484 event[pos++] = event_size; 1485 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1486 offset += 8; 1487 pos += 8; 1488 event[pos++] = packet[offset + 1 + data_length]; // rssi 1489 event[pos++] = data_length; 1490 offset++; 1491 (void)memcpy(&event[pos], &packet[offset], data_length); 1492 pos += data_length; 1493 offset += data_length + 1u; // rssi 1494 hci_emit_event(event, pos, 1); 1495 } 1496 } 1497 1498 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1499 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1500 uint16_t offset = 3; 1501 uint8_t num_reports = packet[offset++]; 1502 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1503 uint8_t i; 1504 for (i=0; (i<num_reports) && (offset < size);i++){ 1505 // sanity checks on data_length: 1506 uint16_t data_length = packet[offset + 23]; 1507 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1508 if ((offset + 24u + data_length) > size) return; 1509 uint16_t event_type = little_endian_read_16(packet, offset); 1510 offset += 2; 1511 if ((event_type & 0x10) != 0) { 1512 // setup legacy event 1513 uint8_t legacy_event_type; 1514 switch (event_type){ 1515 case 0b0010011: 1516 // ADV_IND 1517 legacy_event_type = 0; 1518 break; 1519 case 0b0010101: 1520 // ADV_DIRECT_IND 1521 legacy_event_type = 1; 1522 break; 1523 case 0b0010010: 1524 // ADV_SCAN_IND 1525 legacy_event_type = 2; 1526 break; 1527 case 0b0010000: 1528 // ADV_NONCONN_IND 1529 legacy_event_type = 3; 1530 break; 1531 case 0b0011011: 1532 case 0b0011010: 1533 // SCAN_RSP 1534 legacy_event_type = 4; 1535 break; 1536 default: 1537 legacy_event_type = 0; 1538 break; 1539 } 1540 uint16_t pos = 0; 1541 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1542 event[pos++] = 10u + data_length; 1543 event[pos++] = legacy_event_type; 1544 // copy address type + address 1545 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1546 offset += 7; 1547 pos += 7; 1548 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1549 offset += 4; 1550 // copy rssi 1551 event[pos++] = packet[offset++]; 1552 // skip periodic advertising interval and direct address 1553 offset += 9; 1554 // copy data len + data; 1555 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1556 pos += 1 +data_length; 1557 offset += 1+ data_length; 1558 hci_emit_event(event, pos, 1); 1559 } else { 1560 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1561 uint8_t report_len = 24 + data_length; 1562 event[1] = report_len; 1563 little_endian_store_16(event, 2, event_type); 1564 memcpy(&event[4], &packet[offset], report_len); 1565 offset += report_len; 1566 hci_emit_event(event, 2 + report_len, 1); 1567 } 1568 } 1569 } 1570 #endif 1571 1572 #endif 1573 #endif 1574 1575 #ifdef ENABLE_BLE 1576 #ifdef ENABLE_LE_PERIPHERAL 1577 static void hci_update_advertisements_enabled_for_current_roles(void){ 1578 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1579 // get number of active le slave connections 1580 int num_slave_connections = 0; 1581 btstack_linked_list_iterator_t it; 1582 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1583 while (btstack_linked_list_iterator_has_next(&it)){ 1584 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1585 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1586 if (con->state != OPEN) continue; 1587 if (con->role != HCI_ROLE_SLAVE) continue; 1588 if (!hci_is_le_connection(con)) continue; 1589 num_slave_connections++; 1590 } 1591 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1592 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1593 } else { 1594 hci_stack->le_advertisements_enabled_for_current_roles = false; 1595 } 1596 } 1597 #endif 1598 #endif 1599 1600 #ifdef ENABLE_CLASSIC 1601 static void gap_run_set_local_name(void){ 1602 hci_reserve_packet_buffer(); 1603 uint8_t * packet = hci_stack->hci_packet_buffer; 1604 // construct HCI Command and send 1605 uint16_t opcode = hci_write_local_name.opcode; 1606 hci_stack->last_cmd_opcode = opcode; 1607 packet[0] = opcode & 0xff; 1608 packet[1] = opcode >> 8; 1609 packet[2] = DEVICE_NAME_LEN; 1610 memset(&packet[3], 0, DEVICE_NAME_LEN); 1611 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1612 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1613 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1614 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1615 // expand '00:00:00:00:00:00' in name with bd_addr 1616 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1617 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1618 } 1619 1620 static void gap_run_set_eir_data(void){ 1621 hci_reserve_packet_buffer(); 1622 uint8_t * packet = hci_stack->hci_packet_buffer; 1623 // construct HCI Command in-place and send 1624 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1625 hci_stack->last_cmd_opcode = opcode; 1626 uint16_t offset = 0; 1627 packet[offset++] = opcode & 0xff; 1628 packet[offset++] = opcode >> 8; 1629 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1630 packet[offset++] = 0; // FEC not required 1631 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1632 if (hci_stack->eir_data){ 1633 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1634 ad_context_t context; 1635 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1636 uint8_t data_type = ad_iterator_get_data_type(&context); 1637 uint8_t size = ad_iterator_get_data_len(&context); 1638 const uint8_t *data = ad_iterator_get_data(&context); 1639 // copy item 1640 packet[offset++] = size + 1; 1641 packet[offset++] = data_type; 1642 memcpy(&packet[offset], data, size); 1643 // update name item 1644 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1645 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1646 } 1647 offset += size; 1648 } 1649 } else { 1650 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1651 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1652 packet[offset++] = bytes_to_copy + 1; 1653 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1654 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1655 // expand '00:00:00:00:00:00' in name with bd_addr 1656 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1657 } 1658 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1659 } 1660 1661 static void hci_run_gap_tasks_classic(void){ 1662 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1663 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1664 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1665 return; 1666 } 1667 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1668 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1669 gap_run_set_local_name(); 1670 return; 1671 } 1672 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1673 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1674 gap_run_set_eir_data(); 1675 return; 1676 } 1677 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1678 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1679 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1680 return; 1681 } 1682 // write page scan activity 1683 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1684 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1685 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1686 return; 1687 } 1688 // write page scan type 1689 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1690 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1691 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1692 return; 1693 } 1694 // write page timeout 1695 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1696 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1697 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1698 return; 1699 } 1700 // send scan enable 1701 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1702 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1703 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1704 return; 1705 } 1706 // send write scan activity 1707 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1708 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1709 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1710 return; 1711 } 1712 } 1713 #endif 1714 1715 #ifndef HAVE_HOST_CONTROLLER_API 1716 1717 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1718 if (!hci_stack->config) return 0; 1719 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1720 // Limit baud rate for Broadcom chipsets to 3 mbps 1721 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1722 baud_rate = 3000000; 1723 } 1724 return baud_rate; 1725 } 1726 1727 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1728 UNUSED(ds); 1729 1730 switch (hci_stack->substate){ 1731 case HCI_INIT_W4_SEND_RESET: 1732 log_info("Resend HCI Reset"); 1733 hci_stack->substate = HCI_INIT_SEND_RESET; 1734 hci_stack->num_cmd_packets = 1; 1735 hci_run(); 1736 break; 1737 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1738 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1739 if (hci_stack->hci_transport->reset_link){ 1740 hci_stack->hci_transport->reset_link(); 1741 } 1742 1743 /* fall through */ 1744 1745 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1746 log_info("Resend HCI Reset - CSR Warm Boot"); 1747 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1748 hci_stack->num_cmd_packets = 1; 1749 hci_run(); 1750 break; 1751 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1752 if (hci_stack->hci_transport->set_baudrate){ 1753 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1754 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1755 hci_stack->hci_transport->set_baudrate(baud_rate); 1756 } 1757 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1758 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1759 if (hci_stack->hci_transport->reset_link){ 1760 log_info("Link Reset"); 1761 hci_stack->hci_transport->reset_link(); 1762 } 1763 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1764 hci_run(); 1765 } 1766 break; 1767 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1768 // otherwise continue 1769 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1770 hci_send_cmd(&hci_read_local_supported_commands); 1771 break; 1772 default: 1773 break; 1774 } 1775 } 1776 #endif 1777 1778 static void hci_initializing_next_state(void){ 1779 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1780 } 1781 1782 static void hci_init_done(void){ 1783 // done. tell the app 1784 log_info("hci_init_done -> HCI_STATE_WORKING"); 1785 hci_stack->state = HCI_STATE_WORKING; 1786 hci_emit_state(); 1787 } 1788 1789 // assumption: hci_can_send_command_packet_now() == true 1790 static void hci_initializing_run(void){ 1791 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1792 1793 if (!hci_can_send_command_packet_now()) return; 1794 1795 #ifndef HAVE_HOST_CONTROLLER_API 1796 bool need_baud_change = hci_stack->config 1797 && hci_stack->chipset 1798 && hci_stack->chipset->set_baudrate_command 1799 && hci_stack->hci_transport->set_baudrate 1800 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1801 #endif 1802 1803 switch (hci_stack->substate){ 1804 case HCI_INIT_SEND_RESET: 1805 hci_state_reset(); 1806 1807 #ifndef HAVE_HOST_CONTROLLER_API 1808 // prepare reset if command complete not received in 100ms 1809 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1810 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1811 btstack_run_loop_add_timer(&hci_stack->timeout); 1812 #endif 1813 // send command 1814 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1815 hci_send_cmd(&hci_reset); 1816 break; 1817 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1818 hci_send_cmd(&hci_read_local_version_information); 1819 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1820 break; 1821 1822 #ifndef HAVE_HOST_CONTROLLER_API 1823 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1824 hci_state_reset(); 1825 // prepare reset if command complete not received in 100ms 1826 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1827 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1828 btstack_run_loop_add_timer(&hci_stack->timeout); 1829 // send command 1830 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1831 hci_send_cmd(&hci_reset); 1832 break; 1833 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1834 hci_state_reset(); 1835 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1836 hci_send_cmd(&hci_reset); 1837 break; 1838 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1839 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1840 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1841 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1842 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1843 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1844 break; 1845 } 1846 case HCI_INIT_SET_BD_ADDR: 1847 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1848 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1849 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1850 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1851 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1852 break; 1853 case HCI_INIT_SEND_READ_LOCAL_NAME: 1854 #ifdef ENABLE_CLASSIC 1855 hci_send_cmd(&hci_read_local_name); 1856 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1857 break; 1858 #endif 1859 /* fall through */ 1860 1861 case HCI_INIT_SEND_BAUD_CHANGE: 1862 if (need_baud_change) { 1863 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1864 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1865 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1866 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1867 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1868 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1869 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1870 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1871 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1872 btstack_run_loop_add_timer(&hci_stack->timeout); 1873 } 1874 break; 1875 } 1876 1877 /* fall through */ 1878 1879 case HCI_INIT_CUSTOM_INIT: 1880 // Custom initialization 1881 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1882 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1883 bool send_cmd = false; 1884 switch (hci_stack->chipset_result){ 1885 case BTSTACK_CHIPSET_VALID_COMMAND: 1886 send_cmd = true; 1887 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1888 break; 1889 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1890 send_cmd = true; 1891 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1892 log_info("CSR Warm Boot"); 1893 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1894 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1895 btstack_run_loop_add_timer(&hci_stack->timeout); 1896 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1897 && hci_stack->config 1898 && hci_stack->chipset 1899 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1900 && hci_stack->hci_transport->set_baudrate 1901 && hci_transport_uart_get_main_baud_rate()){ 1902 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1903 } else { 1904 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1905 } 1906 break; 1907 default: 1908 break; 1909 } 1910 1911 if (send_cmd){ 1912 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1913 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1914 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1915 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1916 break; 1917 } 1918 log_info("Init script done"); 1919 1920 // Init script download on Broadcom chipsets causes: 1921 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1922 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1923 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1924 1925 // - baud rate to reset, restore UART baud rate if needed 1926 if (need_baud_change) { 1927 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1928 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1929 hci_stack->hci_transport->set_baudrate(baud_rate); 1930 } 1931 1932 uint16_t bcm_delay_ms = 300; 1933 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1934 // -> Work around: wait here. 1935 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1936 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1937 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1938 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1939 btstack_run_loop_add_timer(&hci_stack->timeout); 1940 break; 1941 } 1942 } 1943 #endif 1944 /* fall through */ 1945 1946 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1947 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1948 hci_send_cmd(&hci_read_local_supported_commands); 1949 break; 1950 case HCI_INIT_READ_BD_ADDR: 1951 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1952 hci_send_cmd(&hci_read_bd_addr); 1953 break; 1954 case HCI_INIT_READ_BUFFER_SIZE: 1955 // only read buffer size if supported 1956 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1957 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1958 hci_send_cmd(&hci_read_buffer_size); 1959 break; 1960 } 1961 1962 /* fall through */ 1963 1964 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1965 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1966 hci_send_cmd(&hci_read_local_supported_features); 1967 break; 1968 1969 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1970 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1971 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1972 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1973 break; 1974 case HCI_INIT_HOST_BUFFER_SIZE: 1975 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1976 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1977 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1978 break; 1979 #endif 1980 1981 case HCI_INIT_SET_EVENT_MASK: 1982 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1983 if (hci_le_supported()){ 1984 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1985 } else { 1986 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1987 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1988 } 1989 break; 1990 1991 case HCI_INIT_SET_EVENT_MASK_2: 1992 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 1993 // setting Event Mask 2 causes Controller to drop Encryption Change events. 1994 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 1995 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 1996 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 1997 // Encryption Change Event v2 - bit 25 1998 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 1999 break; 2000 } 2001 2002 #ifdef ENABLE_CLASSIC 2003 /* fall through */ 2004 2005 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2006 if (hci_classic_supported() && gap_ssp_supported()){ 2007 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2008 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2009 break; 2010 } 2011 2012 /* fall through */ 2013 2014 case HCI_INIT_WRITE_INQUIRY_MODE: 2015 if (hci_classic_supported()){ 2016 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2017 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2018 break; 2019 } 2020 2021 /* fall through */ 2022 2023 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2024 // skip write secure connections host support if not supported or disabled 2025 if (hci_classic_supported() && hci_stack->secure_connections_enable 2026 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2027 hci_stack->secure_connections_active = true; 2028 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2029 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2030 break; 2031 } 2032 2033 /* fall through */ 2034 2035 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2036 // skip set min encryption key size 2037 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2038 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2039 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2040 break; 2041 } 2042 2043 #ifdef ENABLE_SCO_OVER_HCI 2044 /* fall through */ 2045 2046 // only sent if ENABLE_SCO_OVER_HCI is defined 2047 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2048 // skip write synchronous flow control if not supported 2049 if (hci_classic_supported() 2050 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2051 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2052 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2053 break; 2054 } 2055 /* fall through */ 2056 2057 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2058 // skip write default erroneous data reporting if not supported 2059 if (hci_classic_supported() 2060 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2061 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2062 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2063 break; 2064 } 2065 #endif 2066 2067 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2068 /* fall through */ 2069 2070 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2071 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2072 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2073 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2074 #ifdef ENABLE_SCO_OVER_HCI 2075 log_info("BCM: Route SCO data via HCI transport"); 2076 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2077 #endif 2078 #ifdef ENABLE_SCO_OVER_PCM 2079 log_info("BCM: Route SCO data via PCM interface"); 2080 #ifdef ENABLE_BCM_PCM_WBS 2081 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2082 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2083 #else 2084 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2085 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2086 #endif 2087 #endif 2088 break; 2089 } 2090 #endif 2091 2092 #ifdef ENABLE_SCO_OVER_PCM 2093 /* fall through */ 2094 2095 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2096 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2097 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2098 log_info("BCM: Config PCM interface for I2S"); 2099 #ifdef ENABLE_BCM_PCM_WBS 2100 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2101 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2102 #else 2103 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2104 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2105 #endif 2106 break; 2107 } 2108 #endif 2109 #endif 2110 2111 #ifdef ENABLE_BLE 2112 /* fall through */ 2113 2114 // LE INIT 2115 case HCI_INIT_LE_READ_BUFFER_SIZE: 2116 if (hci_le_supported()){ 2117 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2118 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2119 hci_send_cmd(&hci_le_read_buffer_size_v2); 2120 } else { 2121 hci_send_cmd(&hci_le_read_buffer_size); 2122 } 2123 break; 2124 } 2125 2126 /* fall through */ 2127 2128 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2129 // skip write le host if not supported (e.g. on LE only EM9301) 2130 if (hci_le_supported() 2131 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2132 // LE Supported Host = 1, Simultaneous Host = 0 2133 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2134 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2135 break; 2136 } 2137 2138 /* fall through */ 2139 2140 case HCI_INIT_LE_SET_EVENT_MASK: 2141 if (hci_le_supported()){ 2142 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2143 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2144 break; 2145 } 2146 #endif 2147 2148 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2149 /* fall through */ 2150 2151 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2152 if (hci_le_supported() 2153 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2154 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2155 hci_send_cmd(&hci_le_read_maximum_data_length); 2156 break; 2157 } 2158 2159 /* fall through */ 2160 2161 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2162 if (hci_le_supported() 2163 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2164 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2165 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2166 break; 2167 } 2168 #endif 2169 2170 #ifdef ENABLE_LE_CENTRAL 2171 /* fall through */ 2172 2173 case HCI_INIT_READ_WHITE_LIST_SIZE: 2174 if (hci_le_supported()){ 2175 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2176 hci_send_cmd(&hci_le_read_white_list_size); 2177 break; 2178 } 2179 2180 #endif 2181 2182 #ifdef ENABLE_LE_PERIPHERAL 2183 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2184 /* fall through */ 2185 2186 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2187 if (hci_extended_advertising_supported()){ 2188 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2189 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2190 break; 2191 } 2192 #endif 2193 #endif 2194 /* fall through */ 2195 2196 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2197 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2198 if (hci_le_supported()) { 2199 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2200 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2201 break; 2202 } 2203 #endif 2204 2205 /* fall through */ 2206 2207 case HCI_INIT_DONE: 2208 hci_stack->substate = HCI_INIT_DONE; 2209 // main init sequence complete 2210 #ifdef ENABLE_CLASSIC 2211 // check if initial Classic GAP Tasks are completed 2212 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2213 hci_run_gap_tasks_classic(); 2214 break; 2215 } 2216 #endif 2217 #ifdef ENABLE_BLE 2218 #ifdef ENABLE_LE_CENTRAL 2219 // check if initial LE GAP Tasks are completed 2220 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2221 hci_run_general_gap_le(); 2222 break; 2223 } 2224 #endif 2225 #endif 2226 hci_init_done(); 2227 break; 2228 2229 default: 2230 return; 2231 } 2232 } 2233 2234 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2235 bool command_completed = false; 2236 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2237 uint16_t opcode = little_endian_read_16(packet,3); 2238 if (opcode == hci_stack->last_cmd_opcode){ 2239 command_completed = true; 2240 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2241 } else { 2242 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2243 } 2244 } 2245 2246 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2247 uint8_t status = packet[2]; 2248 uint16_t opcode = little_endian_read_16(packet,4); 2249 if (opcode == hci_stack->last_cmd_opcode){ 2250 if (status){ 2251 command_completed = true; 2252 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2253 } else { 2254 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2255 } 2256 } else { 2257 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2258 } 2259 } 2260 #ifndef HAVE_HOST_CONTROLLER_API 2261 // Vendor == CSR 2262 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2263 // TODO: track actual command 2264 command_completed = true; 2265 } 2266 2267 // Vendor == Toshiba 2268 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2269 // TODO: track actual command 2270 command_completed = true; 2271 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2272 hci_stack->num_cmd_packets = 1; 2273 } 2274 #endif 2275 2276 return command_completed; 2277 } 2278 2279 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2280 2281 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2282 2283 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2284 2285 #ifndef HAVE_HOST_CONTROLLER_API 2286 2287 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2288 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2289 // 2290 // HCI Reset 2291 // Timeout 100 ms 2292 // HCI Reset 2293 // Command Complete Reset 2294 // HCI Read Local Version Information 2295 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2296 // hang... 2297 // 2298 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2299 if (!command_completed 2300 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2301 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2302 2303 uint16_t opcode = little_endian_read_16(packet,3); 2304 if (opcode == hci_reset.opcode){ 2305 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2306 return; 2307 } 2308 } 2309 2310 // CSR & H5 2311 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2312 if (!command_completed 2313 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2314 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2315 2316 uint16_t opcode = little_endian_read_16(packet,3); 2317 if (opcode == hci_reset.opcode){ 2318 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2319 return; 2320 } 2321 } 2322 2323 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2324 // fix: Correct substate and behave as command below 2325 if (command_completed){ 2326 switch (hci_stack->substate){ 2327 case HCI_INIT_SEND_RESET: 2328 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2329 break; 2330 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2331 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2332 break; 2333 default: 2334 break; 2335 } 2336 } 2337 2338 #endif 2339 2340 if (!command_completed) return; 2341 2342 bool need_baud_change = false; 2343 bool need_addr_change = false; 2344 2345 #ifndef HAVE_HOST_CONTROLLER_API 2346 need_baud_change = hci_stack->config 2347 && hci_stack->chipset 2348 && hci_stack->chipset->set_baudrate_command 2349 && hci_stack->hci_transport->set_baudrate 2350 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2351 2352 need_addr_change = hci_stack->custom_bd_addr_set 2353 && hci_stack->chipset 2354 && hci_stack->chipset->set_bd_addr_command; 2355 #endif 2356 2357 switch(hci_stack->substate){ 2358 2359 #ifndef HAVE_HOST_CONTROLLER_API 2360 case HCI_INIT_SEND_RESET: 2361 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2362 // fix: just correct substate and behave as command below 2363 2364 /* fall through */ 2365 #endif 2366 2367 case HCI_INIT_W4_SEND_RESET: 2368 btstack_run_loop_remove_timer(&hci_stack->timeout); 2369 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2370 return; 2371 2372 #ifndef HAVE_HOST_CONTROLLER_API 2373 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2374 // for STLC2500D, baud rate change already happened. 2375 // for others, baud rate gets changed now 2376 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2377 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2378 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2379 hci_stack->hci_transport->set_baudrate(baud_rate); 2380 } 2381 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2382 return; 2383 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2384 btstack_run_loop_remove_timer(&hci_stack->timeout); 2385 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2386 return; 2387 case HCI_INIT_W4_CUSTOM_INIT: 2388 // repeat custom init 2389 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2390 return; 2391 #endif 2392 2393 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2394 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2395 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2396 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2397 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2398 return; 2399 } 2400 if (need_addr_change){ 2401 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2402 return; 2403 } 2404 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2405 return; 2406 #ifndef HAVE_HOST_CONTROLLER_API 2407 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2408 if (need_baud_change){ 2409 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2410 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2411 hci_stack->hci_transport->set_baudrate(baud_rate); 2412 } 2413 if (need_addr_change){ 2414 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2415 return; 2416 } 2417 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2418 return; 2419 case HCI_INIT_W4_SET_BD_ADDR: 2420 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2421 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2422 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2423 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2424 return; 2425 } 2426 // skipping st warm boot 2427 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2428 return; 2429 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2430 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2431 return; 2432 #endif 2433 2434 case HCI_INIT_DONE: 2435 // set state if we came here by fall through 2436 hci_stack->substate = HCI_INIT_DONE; 2437 return; 2438 2439 default: 2440 break; 2441 } 2442 hci_initializing_next_state(); 2443 } 2444 2445 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2446 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2447 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2448 // check if we have been aware of the HCI connection 2449 switch (conn->state){ 2450 case SENT_CREATE_CONNECTION: 2451 case RECEIVED_CONNECTION_REQUEST: 2452 break; 2453 default: 2454 return; 2455 } 2456 2457 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2458 bd_addr_t bd_address; 2459 (void)memcpy(&bd_address, conn->address, 6); 2460 2461 #ifdef ENABLE_CLASSIC 2462 // cache needed data 2463 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2464 #endif 2465 2466 // connection failed, remove entry 2467 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2468 btstack_memory_hci_connection_free( conn ); 2469 2470 #ifdef ENABLE_CLASSIC 2471 // notify client if dedicated bonding 2472 if (notify_dedicated_bonding_failed){ 2473 log_info("hci notify_dedicated_bonding_failed"); 2474 hci_emit_dedicated_bonding_result(bd_address, status); 2475 } 2476 2477 // if authentication error, also delete link key 2478 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2479 gap_drop_link_key_for_bd_addr(bd_address); 2480 } 2481 #else 2482 UNUSED(status); 2483 #endif 2484 } 2485 2486 #ifdef ENABLE_CLASSIC 2487 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2488 // SSP Controller 2489 if (features[6] & (1 << 3)){ 2490 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2491 } 2492 // eSCO 2493 if (features[3] & (1<<7)){ 2494 conn->remote_supported_features[0] |= 1; 2495 } 2496 // Extended features 2497 if (features[7] & (1<<7)){ 2498 conn->remote_supported_features[0] |= 2; 2499 } 2500 } 2501 2502 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2503 // SSP Host 2504 if (features[0] & (1 << 0)){ 2505 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2506 } 2507 // SC Host 2508 if (features[0] & (1 << 3)){ 2509 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2510 } 2511 } 2512 2513 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2514 // SC Controller 2515 if (features[1] & (1 << 0)){ 2516 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2517 } 2518 } 2519 2520 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2521 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2522 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2523 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2524 if (conn->bonding_flags & BONDING_DEDICATED){ 2525 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2526 } 2527 } 2528 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2529 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2530 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2531 } 2532 2533 #endif 2534 2535 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2536 // handle BT initialization 2537 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2538 hci_initializing_event_handler(packet, size); 2539 } 2540 2541 // help with BT sleep 2542 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2543 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2544 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2545 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2546 hci_initializing_next_state(); 2547 } 2548 } 2549 2550 #ifdef ENABLE_CLASSIC 2551 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2552 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2553 conn->encryption_key_size = encryption_key_size; 2554 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2555 2556 // trigger disconnect for dedicated bonding, skip emit security level as disconnect is pending 2557 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2558 conn->bonding_flags &= ~BONDING_DEDICATED; 2559 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2560 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2561 return; 2562 } 2563 2564 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2565 conn->requested_security_level = LEVEL_0; 2566 hci_emit_security_level(conn->con_handle, security_level); 2567 return; 2568 } 2569 2570 // Request remote features if not already done 2571 hci_trigger_remote_features_for_connection(conn); 2572 2573 // Request Authentication if not already done 2574 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2575 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2576 } 2577 #endif 2578 2579 static void hci_store_local_supported_commands(const uint8_t * packet){ 2580 // create mapping table 2581 #define X(name, offset, bit) { offset, bit }, 2582 static struct { 2583 uint8_t byte_offset; 2584 uint8_t bit_position; 2585 } supported_hci_commands_map [] = { 2586 SUPPORTED_HCI_COMMANDS 2587 }; 2588 #undef X 2589 2590 // create names for debug purposes 2591 #ifdef ENABLE_LOG_DEBUG 2592 #define X(name, offset, bit) #name, 2593 static const char * command_names[] = { 2594 SUPPORTED_HCI_COMMANDS 2595 }; 2596 #undef X 2597 #endif 2598 2599 hci_stack->local_supported_commands = 0; 2600 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2601 uint16_t i; 2602 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2603 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2604 #ifdef ENABLE_LOG_DEBUG 2605 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); 2606 #else 2607 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2608 #endif 2609 hci_stack->local_supported_commands |= (1LU << i); 2610 } 2611 } 2612 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2613 } 2614 2615 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2616 UNUSED(size); 2617 2618 uint16_t manufacturer; 2619 #ifdef ENABLE_CLASSIC 2620 hci_con_handle_t handle; 2621 hci_connection_t * conn; 2622 #endif 2623 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2624 uint8_t status; 2625 #endif 2626 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2627 le_audio_cig_t * cig; 2628 #endif 2629 2630 // get num cmd packets - limit to 1 to reduce complexity 2631 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2632 2633 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2634 switch (opcode){ 2635 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2636 if (packet[5]) break; 2637 // terminate, name 248 chars 2638 packet[6+248] = 0; 2639 log_info("local name: %s", &packet[6]); 2640 break; 2641 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2642 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2643 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2644 uint16_t acl_len = little_endian_read_16(packet, 6); 2645 uint16_t sco_len = packet[8]; 2646 2647 // determine usable ACL/SCO payload size 2648 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2649 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2650 2651 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2652 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2653 2654 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2655 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2656 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2657 } 2658 break; 2659 case HCI_OPCODE_HCI_READ_RSSI: 2660 if (packet[5] == ERROR_CODE_SUCCESS){ 2661 uint8_t event[5]; 2662 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2663 event[1] = 3; 2664 (void)memcpy(&event[2], &packet[6], 3); 2665 hci_emit_event(event, sizeof(event), 1); 2666 } 2667 break; 2668 #ifdef ENABLE_BLE 2669 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2670 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2671 hci_stack->le_iso_packets_total_num = packet[11]; 2672 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2673 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2674 2675 /* fall through */ 2676 2677 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2678 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2679 hci_stack->le_acl_packets_total_num = packet[8]; 2680 // determine usable ACL payload size 2681 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2682 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2683 } 2684 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); 2685 break; 2686 #endif 2687 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2688 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2689 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2690 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2691 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); 2692 break; 2693 #endif 2694 #ifdef ENABLE_LE_CENTRAL 2695 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2696 hci_stack->le_whitelist_capacity = packet[6]; 2697 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2698 break; 2699 #endif 2700 #ifdef ENABLE_LE_PERIPHERAL 2701 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2702 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2703 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2704 break; 2705 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2706 if (hci_stack->le_advertising_set_in_current_command != 0) { 2707 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2708 hci_stack->le_advertising_set_in_current_command = 0; 2709 if (advertising_set == NULL) break; 2710 uint8_t adv_status = packet[6]; 2711 uint8_t tx_power = packet[7]; 2712 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 }; 2713 if (adv_status == 0){ 2714 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2715 } 2716 hci_emit_event(event, sizeof(event), 1); 2717 } 2718 break; 2719 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2720 if (hci_stack->le_advertising_set_in_current_command != 0) { 2721 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2722 hci_stack->le_advertising_set_in_current_command = 0; 2723 if (advertising_set == NULL) break; 2724 uint8_t adv_status = packet[5]; 2725 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2726 if (adv_status == 0){ 2727 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2728 } 2729 hci_emit_event(event, sizeof(event), 1); 2730 } 2731 break; 2732 #endif 2733 #endif 2734 case HCI_OPCODE_HCI_READ_BD_ADDR: 2735 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2736 log_info("Local Address, Status: 0x%02x: Addr: %s", packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE], bd_addr_to_str(hci_stack->local_bd_addr)); 2737 #ifdef ENABLE_CLASSIC 2738 if (hci_stack->link_key_db){ 2739 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2740 } 2741 #endif 2742 break; 2743 #ifdef ENABLE_CLASSIC 2744 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2745 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2746 break; 2747 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2748 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2749 if (status == ERROR_CODE_SUCCESS) { 2750 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2751 } else { 2752 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2753 } 2754 break; 2755 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2756 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2757 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2758 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2759 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2760 hci_emit_event(event, sizeof(event), 1); 2761 } 2762 break; 2763 #endif 2764 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2765 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2766 2767 #ifdef ENABLE_CLASSIC 2768 // determine usable ACL packet types based on host buffer size and supported features 2769 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2770 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2771 #endif 2772 // Classic/LE 2773 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2774 break; 2775 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2776 manufacturer = little_endian_read_16(packet, 10); 2777 // map Cypress to Broadcom 2778 if (manufacturer == BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR){ 2779 log_info("Treat Cypress as Broadcom"); 2780 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2781 little_endian_store_16(packet, 10, manufacturer); 2782 } 2783 hci_stack->manufacturer = manufacturer; 2784 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2785 break; 2786 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2787 hci_store_local_supported_commands(packet); 2788 break; 2789 #ifdef ENABLE_CLASSIC 2790 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2791 if (packet[5]) return; 2792 hci_stack->synchronous_flow_control_enabled = 1; 2793 break; 2794 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2795 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2796 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2797 conn = hci_connection_for_handle(handle); 2798 if (conn != NULL) { 2799 uint8_t key_size = 0; 2800 if (status == 0){ 2801 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2802 log_info("Handle %04x key Size: %u", handle, key_size); 2803 } else { 2804 key_size = 1; 2805 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2806 } 2807 hci_handle_read_encryption_key_size_complete(conn, key_size); 2808 } 2809 break; 2810 // assert pairing complete event is emitted. 2811 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2812 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2813 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2814 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2815 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2816 // lookup connection by gap pairing addr 2817 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2818 if (conn == NULL) break; 2819 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2820 break; 2821 2822 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2823 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2824 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2825 uint8_t event[67]; 2826 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2827 event[1] = 65; 2828 (void)memset(&event[2], 0, 65); 2829 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2830 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2831 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2832 event[2] = 3; 2833 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2834 } else { 2835 event[2] = 1; 2836 } 2837 } 2838 hci_emit_event(event, sizeof(event), 0); 2839 break; 2840 } 2841 2842 // note: only needed if user does not provide OOB data 2843 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2844 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2845 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2846 if (conn == NULL) break; 2847 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2848 break; 2849 #endif 2850 #endif 2851 #ifdef ENABLE_BLE 2852 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2853 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2854 // lookup CIG 2855 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2856 if (cig != NULL){ 2857 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2858 uint8_t i = 0; 2859 if (status == ERROR_CODE_SUCCESS){ 2860 // assign CIS handles to pre-allocated CIS 2861 btstack_linked_list_iterator_t it; 2862 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2863 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2864 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2865 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2866 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2867 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2868 iso_stream->con_handle = cis_handle; 2869 cig->cis_con_handles[i] = cis_handle; 2870 i++; 2871 } 2872 } 2873 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2874 hci_emit_cig_created(cig, status); 2875 } else { 2876 hci_emit_cig_created(cig, status); 2877 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2878 } 2879 } 2880 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2881 break; 2882 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2883 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2884 if (status != ERROR_CODE_SUCCESS){ 2885 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2886 } 2887 break; 2888 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2889 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2890 if (status != ERROR_CODE_SUCCESS){ 2891 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2892 } 2893 break; 2894 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2895 // lookup BIG by state 2896 btstack_linked_list_iterator_t it; 2897 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2898 while (btstack_linked_list_iterator_has_next(&it)) { 2899 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2900 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2901 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2902 if (status == ERROR_CODE_SUCCESS){ 2903 big->state_vars.next_bis++; 2904 if (big->state_vars.next_bis == big->num_bis){ 2905 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2906 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2907 } else { 2908 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2909 } 2910 } else { 2911 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2912 big->state_vars.status = status; 2913 } 2914 return; 2915 } 2916 } 2917 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2918 while (btstack_linked_list_iterator_has_next(&it)) { 2919 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2920 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2921 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2922 if (status == ERROR_CODE_SUCCESS){ 2923 big_sync->state_vars.next_bis++; 2924 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2925 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2926 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2927 } else { 2928 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2929 } 2930 } else { 2931 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2932 big_sync->state_vars.status = status; 2933 } 2934 return; 2935 } 2936 } 2937 // Lookup CIS via active group operation 2938 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 2939 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 2940 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2941 2942 // lookup CIS by state 2943 btstack_linked_list_iterator_t it; 2944 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2945 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2946 while (btstack_linked_list_iterator_has_next(&it)){ 2947 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2948 handle = iso_stream->con_handle; 2949 switch (iso_stream->state){ 2950 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 2951 if (status != ERROR_CODE_SUCCESS){ 2952 hci_iso_stream_finalize(iso_stream); 2953 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, status); 2954 break; 2955 } 2956 if (iso_stream->max_sdu_c_to_p > 0){ 2957 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 2958 } else { 2959 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, ERROR_CODE_SUCCESS); 2960 } 2961 break; 2962 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 2963 if (status != ERROR_CODE_SUCCESS){ 2964 hci_iso_stream_finalize(iso_stream); 2965 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, status); 2966 break; 2967 } 2968 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, ERROR_CODE_SUCCESS); 2969 break; 2970 default: 2971 break; 2972 } 2973 } 2974 } else { 2975 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2976 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2977 if (cig != NULL) { 2978 // emit cis created if all ISO Paths have been created 2979 // assume we are central 2980 uint8_t cis_index = cig->state_vars.next_cis >> 1; 2981 uint8_t cis_direction = cig->state_vars.next_cis & 1; 2982 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 2983 // if outgoing has been setup, or incoming was setup but outgoing not required 2984 if ((cis_direction == 1) || (outgoing_needed == false)){ 2985 hci_emit_cis_created(cig->cig_id, cig->cis_con_handles[cis_index], status); 2986 } 2987 // next state 2988 cig->state_vars.next_cis++; 2989 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 2990 } 2991 } 2992 } 2993 break; 2994 } 2995 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 2996 // lookup BIG by state 2997 btstack_linked_list_iterator_t it; 2998 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2999 while (btstack_linked_list_iterator_has_next(&it)) { 3000 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3001 uint8_t big_handle = big_sync->big_handle; 3002 switch (big_sync->state){ 3003 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3004 btstack_linked_list_iterator_remove(&it); 3005 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3006 return; 3007 default: 3008 btstack_linked_list_iterator_remove(&it); 3009 hci_emit_big_sync_stopped(big_handle); 3010 return; 3011 } 3012 } 3013 break; 3014 } 3015 #endif 3016 #endif 3017 default: 3018 break; 3019 } 3020 } 3021 3022 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3023 UNUSED(size); 3024 3025 // get num cmd packets - limit to 1 to reduce complexity 3026 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3027 3028 // get opcode and command status 3029 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3030 3031 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3032 uint8_t status = hci_event_command_status_get_status(packet); 3033 #endif 3034 3035 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3036 bd_addr_type_t addr_type; 3037 #endif 3038 3039 switch (opcode){ 3040 #ifdef ENABLE_CLASSIC 3041 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3042 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3043 #endif 3044 #ifdef ENABLE_LE_CENTRAL 3045 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3046 #endif 3047 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3048 addr_type = hci_stack->outgoing_addr_type; 3049 3050 // reset outgoing address info 3051 memset(hci_stack->outgoing_addr, 0, 6); 3052 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3053 3054 // on error 3055 if (status != ERROR_CODE_SUCCESS){ 3056 #ifdef ENABLE_LE_CENTRAL 3057 if (hci_is_le_connection_type(addr_type)){ 3058 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3059 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3060 } 3061 #endif 3062 // error => outgoing connection failed 3063 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(hci_stack->outgoing_addr, addr_type); 3064 if (conn != NULL){ 3065 hci_handle_connection_failed(conn, status); 3066 } 3067 } 3068 break; 3069 #endif 3070 #ifdef ENABLE_CLASSIC 3071 case HCI_OPCODE_HCI_INQUIRY: 3072 if (status == ERROR_CODE_SUCCESS) { 3073 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3074 } else { 3075 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3076 } 3077 break; 3078 #endif 3079 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3080 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3081 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3082 if (status == ERROR_CODE_SUCCESS){ 3083 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3084 } else { 3085 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3086 } 3087 break; 3088 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3089 default: 3090 break; 3091 } 3092 } 3093 3094 #ifdef ENABLE_BLE 3095 static void event_handle_le_connection_complete(const uint8_t * packet){ 3096 bd_addr_t addr; 3097 bd_addr_type_t addr_type; 3098 hci_connection_t * conn; 3099 3100 // Connection management 3101 reverse_bd_addr(&packet[8], addr); 3102 addr_type = (bd_addr_type_t)packet[7]; 3103 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 3104 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3105 3106 #ifdef ENABLE_LE_CENTRAL 3107 // handle error: error is reported only to the initiator -> outgoing connection 3108 if (packet[3]){ 3109 3110 // handle cancelled outgoing connection 3111 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3112 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3113 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3114 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3115 // reset state 3116 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3117 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3118 // get outgoing connection conn struct for direct connect 3119 conn = gap_get_outgoing_connection(); 3120 } 3121 3122 // outgoing le connection establishment is done 3123 if (conn){ 3124 // remove entry 3125 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3126 btstack_memory_hci_connection_free( conn ); 3127 } 3128 return; 3129 } 3130 #endif 3131 3132 // on success, both hosts receive connection complete event 3133 if (packet[6] == HCI_ROLE_MASTER){ 3134 #ifdef ENABLE_LE_CENTRAL 3135 // if we're master on an le connection, it was an outgoing connection and we're done with it 3136 // note: no hci_connection_t object exists yet for connect with whitelist 3137 if (hci_is_le_connection_type(addr_type)){ 3138 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3139 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3140 } 3141 #endif 3142 } else { 3143 #ifdef ENABLE_LE_PERIPHERAL 3144 // if we're slave, it was an incoming connection, advertisements have stopped 3145 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3146 #endif 3147 } 3148 3149 // LE connections are auto-accepted, so just create a connection if there isn't one already 3150 if (!conn){ 3151 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3152 } 3153 3154 // no memory, sorry. 3155 if (!conn){ 3156 return; 3157 } 3158 3159 conn->state = OPEN; 3160 conn->role = packet[6]; 3161 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3162 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3163 3164 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3165 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3166 3167 #ifdef ENABLE_LE_PERIPHERAL 3168 if (packet[6] == HCI_ROLE_SLAVE){ 3169 hci_update_advertisements_enabled_for_current_roles(); 3170 } 3171 #endif 3172 3173 // init unenhanced att bearer mtu 3174 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3175 conn->att_connection.mtu_exchanged = false; 3176 3177 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3178 3179 // restart timer 3180 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3181 // btstack_run_loop_add_timer(&conn->timeout); 3182 3183 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3184 3185 hci_emit_nr_connections_changed(); 3186 } 3187 #endif 3188 3189 #ifdef ENABLE_CLASSIC 3190 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){ 3191 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3192 // LEVEL_4 is tested by l2cap 3193 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3194 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3195 if (level >= LEVEL_3){ 3196 // MITM not possible without keyboard or display 3197 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3198 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3199 3200 // MITM possible if one side has keyboard and the other has keyboard or display 3201 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3202 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3203 3204 // MITM not possible if one side has only display and other side has no keyboard 3205 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3206 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3207 } 3208 // LEVEL 2 requires SSP, which is a given 3209 return true; 3210 } 3211 3212 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3213 // get requested security level 3214 gap_security_level_t requested_security_level = conn->requested_security_level; 3215 if (hci_stack->gap_secure_connections_only_mode){ 3216 requested_security_level = LEVEL_4; 3217 } 3218 3219 // assess security: LEVEL 4 requires SC 3220 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3221 if ((requested_security_level == LEVEL_4) && 3222 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3223 !hci_remote_sc_enabled(conn)){ 3224 log_info("Level 4 required, but SC not supported -> abort"); 3225 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3226 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3227 return; 3228 } 3229 3230 // assess security based on io capabilities 3231 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3232 // responder: fully validate io caps of both sides as well as OOB data 3233 bool security_possible = false; 3234 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3235 3236 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3237 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3238 // so we merge the OOB data availability 3239 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3240 if (conn->classic_oob_c_192 != NULL){ 3241 have_oob_data |= 1; 3242 } 3243 if (conn->classic_oob_c_256 != NULL){ 3244 have_oob_data |= 2; 3245 } 3246 // for up to Level 3, either P-192 as well as P-256 will do 3247 // 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 3248 // if remote does not SC, we should not receive P-256 data either 3249 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3250 security_possible = true; 3251 } 3252 // for Level 4, P-256 is needed 3253 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3254 security_possible = true; 3255 } 3256 #endif 3257 3258 if (security_possible == false){ 3259 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3260 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3261 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3262 return; 3263 } 3264 } else { 3265 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3266 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3267 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3268 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3269 log_info("Level 3+ required, but no input/output -> abort"); 3270 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3271 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3272 return; 3273 } 3274 #endif 3275 #endif 3276 } 3277 3278 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3279 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3280 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3281 } else { 3282 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3283 } 3284 #endif 3285 } 3286 3287 #endif 3288 3289 static void event_handler(uint8_t *packet, uint16_t size){ 3290 3291 uint16_t event_length = packet[1]; 3292 3293 // assert packet is complete 3294 if (size != (event_length + 2u)){ 3295 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3296 return; 3297 } 3298 3299 hci_con_handle_t handle; 3300 hci_connection_t * conn; 3301 int i; 3302 3303 #ifdef ENABLE_CLASSIC 3304 hci_link_type_t link_type; 3305 bd_addr_t addr; 3306 bd_addr_type_t addr_type; 3307 #endif 3308 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3309 hci_iso_stream_t * iso_stream; 3310 le_audio_big_t * big; 3311 le_audio_big_sync_t * big_sync; 3312 #endif 3313 3314 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3315 3316 switch (hci_event_packet_get_type(packet)) { 3317 3318 case HCI_EVENT_COMMAND_COMPLETE: 3319 handle_command_complete_event(packet, size); 3320 break; 3321 3322 case HCI_EVENT_COMMAND_STATUS: 3323 handle_command_status_event(packet, size); 3324 break; 3325 3326 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3327 if (size < 3) return; 3328 uint16_t num_handles = packet[2]; 3329 if (size != (3u + num_handles * 4u)) return; 3330 #ifdef ENABLE_CLASSIC 3331 bool notify_sco = false; 3332 #endif 3333 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3334 bool notify_iso = false; 3335 #endif 3336 uint16_t offset = 3; 3337 for (i=0; i<num_handles;i++){ 3338 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3339 offset += 2u; 3340 uint16_t num_packets = little_endian_read_16(packet, offset); 3341 offset += 2u; 3342 3343 conn = hci_connection_for_handle(handle); 3344 if (conn != NULL) { 3345 3346 if (conn->num_packets_sent >= num_packets) { 3347 conn->num_packets_sent -= num_packets; 3348 } else { 3349 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3350 conn->num_packets_sent = 0; 3351 } 3352 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3353 #ifdef ENABLE_CLASSIC 3354 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3355 notify_sco = true; 3356 } 3357 #endif 3358 } 3359 3360 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3361 hci_controller_dump_packets(); 3362 #endif 3363 3364 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3365 if (conn == NULL){ 3366 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3367 if (iso_stream != NULL){ 3368 if (iso_stream->num_packets_sent >= num_packets) { 3369 iso_stream->num_packets_sent -= num_packets; 3370 } else { 3371 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3372 iso_stream->num_packets_sent = 0; 3373 } 3374 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3375 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3376 if (big != NULL){ 3377 big->num_completed_timestamp_current_valid = true; 3378 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3379 } 3380 } 3381 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3382 num_packets, handle, iso_stream->num_packets_sent); 3383 notify_iso = true; 3384 } 3385 } 3386 #endif 3387 } 3388 3389 #ifdef ENABLE_CLASSIC 3390 if (notify_sco){ 3391 hci_notify_if_sco_can_send_now(); 3392 } 3393 #endif 3394 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3395 if (notify_iso){ 3396 hci_iso_notify_can_send_now(); 3397 } 3398 #endif 3399 break; 3400 } 3401 3402 #ifdef ENABLE_CLASSIC 3403 case HCI_EVENT_FLUSH_OCCURRED: 3404 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3405 handle = hci_event_flush_occurred_get_handle(packet); 3406 conn = hci_connection_for_handle(handle); 3407 if (conn) { 3408 log_info("Flush occurred, disconnect 0x%04x", handle); 3409 conn->state = SEND_DISCONNECT; 3410 } 3411 break; 3412 3413 case HCI_EVENT_INQUIRY_COMPLETE: 3414 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3415 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3416 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3417 hci_emit_event(event, sizeof(event), 1); 3418 } 3419 break; 3420 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3421 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3422 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3423 } 3424 break; 3425 case HCI_EVENT_CONNECTION_REQUEST: 3426 reverse_bd_addr(&packet[2], addr); 3427 link_type = (hci_link_type_t) packet[11]; 3428 3429 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3430 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3431 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3432 bd_addr_copy(hci_stack->decline_addr, addr); 3433 break; 3434 } 3435 3436 if (hci_stack->gap_classic_accept_callback != NULL){ 3437 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3438 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3439 bd_addr_copy(hci_stack->decline_addr, addr); 3440 break; 3441 } 3442 } 3443 3444 // TODO: eval COD 8-10 3445 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3446 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3447 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3448 if (!conn) { 3449 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3450 } 3451 if (!conn) { 3452 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3453 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3454 bd_addr_copy(hci_stack->decline_addr, addr); 3455 hci_run(); 3456 // avoid event to higher layer 3457 return; 3458 } 3459 conn->role = HCI_ROLE_SLAVE; 3460 conn->state = RECEIVED_CONNECTION_REQUEST; 3461 // store info about eSCO 3462 if (link_type == HCI_LINK_TYPE_ESCO){ 3463 conn->remote_supported_features[0] |= 1; 3464 } 3465 hci_run(); 3466 break; 3467 3468 case HCI_EVENT_CONNECTION_COMPLETE: 3469 // Connection management 3470 reverse_bd_addr(&packet[5], addr); 3471 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3472 addr_type = BD_ADDR_TYPE_ACL; 3473 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3474 if (conn) { 3475 switch (conn->state){ 3476 // expected states 3477 case ACCEPTED_CONNECTION_REQUEST: 3478 case SENT_CREATE_CONNECTION: 3479 break; 3480 // unexpected state -> ignore 3481 default: 3482 // don't forward event to app 3483 return; 3484 } 3485 if (!packet[2]){ 3486 conn->state = OPEN; 3487 conn->con_handle = little_endian_read_16(packet, 3); 3488 3489 // trigger write supervision timeout if we're master 3490 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3491 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3492 } 3493 3494 // trigger write automatic flush timeout 3495 if (hci_stack->automatic_flush_timeout != 0){ 3496 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3497 } 3498 3499 // restart timer 3500 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3501 btstack_run_loop_add_timer(&conn->timeout); 3502 3503 // trigger remote features for dedicated bonding 3504 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3505 hci_trigger_remote_features_for_connection(conn); 3506 } 3507 3508 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3509 3510 hci_emit_nr_connections_changed(); 3511 } else { 3512 // connection failed 3513 hci_handle_connection_failed(conn, packet[2]); 3514 } 3515 } 3516 break; 3517 3518 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3519 reverse_bd_addr(&packet[5], addr); 3520 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3521 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3522 if (packet[2]){ 3523 // connection failed 3524 if (conn){ 3525 hci_handle_connection_failed(conn, packet[2]); 3526 } 3527 break; 3528 } 3529 if (!conn) { 3530 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3531 } 3532 if (!conn) { 3533 break; 3534 } 3535 conn->state = OPEN; 3536 conn->con_handle = little_endian_read_16(packet, 3); 3537 3538 #ifdef ENABLE_SCO_OVER_HCI 3539 // update SCO 3540 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3541 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3542 } 3543 // trigger can send now 3544 if (hci_have_usb_transport()){ 3545 hci_stack->sco_can_send_now = true; 3546 } 3547 #endif 3548 #ifdef HAVE_SCO_TRANSPORT 3549 // configure sco transport 3550 if (hci_stack->sco_transport != NULL){ 3551 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3552 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3553 } 3554 #endif 3555 break; 3556 3557 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3558 handle = little_endian_read_16(packet, 3); 3559 conn = hci_connection_for_handle(handle); 3560 if (!conn) break; 3561 if (!packet[2]){ 3562 const uint8_t * features = &packet[5]; 3563 hci_handle_remote_features_page_0(conn, features); 3564 3565 // read extended features if possible 3566 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3567 && ((conn->remote_supported_features[0] & 2) != 0)) { 3568 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3569 break; 3570 } 3571 } 3572 hci_handle_remote_features_received(conn); 3573 break; 3574 3575 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3576 handle = little_endian_read_16(packet, 3); 3577 conn = hci_connection_for_handle(handle); 3578 if (!conn) break; 3579 // status = ok, page = 1 3580 if (!packet[2]) { 3581 uint8_t page_number = packet[5]; 3582 uint8_t maximum_page_number = packet[6]; 3583 const uint8_t * features = &packet[7]; 3584 bool done = false; 3585 switch (page_number){ 3586 case 1: 3587 hci_handle_remote_features_page_1(conn, features); 3588 if (maximum_page_number >= 2){ 3589 // get Secure Connections (Controller) from Page 2 if available 3590 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3591 } else { 3592 // otherwise, assume SC (Controller) == SC (Host) 3593 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3594 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3595 } 3596 done = true; 3597 } 3598 break; 3599 case 2: 3600 hci_handle_remote_features_page_2(conn, features); 3601 done = true; 3602 break; 3603 default: 3604 break; 3605 } 3606 if (!done) break; 3607 } 3608 hci_handle_remote_features_received(conn); 3609 break; 3610 3611 case HCI_EVENT_LINK_KEY_REQUEST: 3612 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3613 hci_event_link_key_request_get_bd_addr(packet, addr); 3614 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3615 if (!conn) break; 3616 3617 // lookup link key in db if not cached 3618 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3619 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3620 } 3621 3622 // response sent by hci_run() 3623 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3624 #endif 3625 break; 3626 3627 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3628 hci_event_link_key_request_get_bd_addr(packet, addr); 3629 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3630 if (!conn) break; 3631 3632 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3633 3634 // CVE-2020-26555: ignore NULL link key 3635 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3636 if (btstack_is_null(&packet[8], 16)) break; 3637 3638 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3639 // Change Connection Encryption keeps link key type 3640 if (link_key_type != CHANGED_COMBINATION_KEY){ 3641 conn->link_key_type = link_key_type; 3642 } 3643 3644 // cache link key. link keys stored in little-endian format for legacy reasons 3645 memcpy(&conn->link_key, &packet[8], 16); 3646 3647 // only store link key: 3648 // - if bondable enabled 3649 if (hci_stack->bondable == false) break; 3650 // - if security level sufficient 3651 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3652 // - for SSP, also check if remote side requested bonding as well 3653 if (conn->link_key_type != COMBINATION_KEY){ 3654 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3655 if (!remote_bonding){ 3656 break; 3657 } 3658 } 3659 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3660 break; 3661 } 3662 3663 case HCI_EVENT_PIN_CODE_REQUEST: 3664 hci_event_pin_code_request_get_bd_addr(packet, addr); 3665 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3666 if (!conn) break; 3667 3668 hci_pairing_started(conn, false); 3669 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3670 if (!hci_stack->bondable ){ 3671 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3672 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3673 hci_run(); 3674 return; 3675 } 3676 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3677 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3678 log_info("Level 4 required, but SC not supported -> abort"); 3679 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3680 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3681 hci_run(); 3682 return; 3683 } 3684 break; 3685 3686 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3687 hci_event_io_capability_response_get_bd_addr(packet, addr); 3688 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3689 if (!conn) break; 3690 3691 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3692 hci_pairing_started(conn, true); 3693 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3694 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3695 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3696 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3697 #endif 3698 break; 3699 3700 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3701 hci_event_io_capability_response_get_bd_addr(packet, addr); 3702 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3703 if (!conn) break; 3704 3705 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3706 hci_connection_timestamp(conn); 3707 hci_pairing_started(conn, true); 3708 break; 3709 3710 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3711 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3712 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3713 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3714 if (!conn) break; 3715 3716 hci_connection_timestamp(conn); 3717 3718 hci_pairing_started(conn, true); 3719 3720 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3721 break; 3722 #endif 3723 3724 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3725 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3726 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3727 if (!conn) break; 3728 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3729 if (hci_stack->ssp_auto_accept){ 3730 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3731 }; 3732 } else { 3733 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3734 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3735 // don't forward event to app 3736 hci_run(); 3737 return; 3738 } 3739 break; 3740 3741 case HCI_EVENT_USER_PASSKEY_REQUEST: 3742 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3743 if (hci_stack->ssp_auto_accept){ 3744 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3745 }; 3746 break; 3747 3748 case HCI_EVENT_MODE_CHANGE: 3749 handle = hci_event_mode_change_get_handle(packet); 3750 conn = hci_connection_for_handle(handle); 3751 if (!conn) break; 3752 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3753 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3754 break; 3755 #endif 3756 3757 case HCI_EVENT_ENCRYPTION_CHANGE: 3758 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3759 handle = hci_event_encryption_change_get_connection_handle(packet); 3760 conn = hci_connection_for_handle(handle); 3761 if (!conn) break; 3762 if (hci_event_encryption_change_get_status(packet) == 0u) { 3763 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3764 if (encryption_enabled){ 3765 if (hci_is_le_connection(conn)){ 3766 // For LE, we accept connection as encrypted 3767 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3768 } 3769 #ifdef ENABLE_CLASSIC 3770 else { 3771 3772 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3773 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3774 bool connected_uses_aes_ccm = encryption_enabled == 2; 3775 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3776 log_info("SC during pairing, but only E0 now -> abort"); 3777 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3778 break; 3779 } 3780 3781 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3782 if (connected_uses_aes_ccm){ 3783 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3784 } 3785 3786 #ifdef ENABLE_TESTING_SUPPORT 3787 // work around for issue with PTS dongle 3788 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3789 #endif 3790 // validate encryption key size 3791 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3792 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3793 // already got encryption key size 3794 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3795 } else { 3796 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3797 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3798 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3799 } else { 3800 // if not, pretend everything is perfect 3801 hci_handle_read_encryption_key_size_complete(conn, 16); 3802 } 3803 } 3804 } 3805 #endif 3806 } else { 3807 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3808 } 3809 } else { 3810 uint8_t status = hci_event_encryption_change_get_status(packet); 3811 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3812 conn->bonding_flags &= ~BONDING_DEDICATED; 3813 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3814 conn->bonding_status = status; 3815 } 3816 } 3817 3818 break; 3819 3820 #ifdef ENABLE_CLASSIC 3821 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3822 handle = hci_event_authentication_complete_get_connection_handle(packet); 3823 conn = hci_connection_for_handle(handle); 3824 if (!conn) break; 3825 3826 // clear authentication active flag 3827 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3828 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3829 3830 // authenticated only if auth status == 0 3831 if (hci_event_authentication_complete_get_status(packet) == 0){ 3832 // authenticated 3833 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3834 3835 // If not already encrypted, start encryption 3836 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3837 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3838 break; 3839 } 3840 } 3841 3842 // emit updated security level 3843 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3844 break; 3845 3846 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3847 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3848 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3849 if (!conn) break; 3850 3851 // treat successfully paired connection as authenticated 3852 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3853 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3854 } 3855 3856 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3857 break; 3858 #endif 3859 3860 // HCI_EVENT_DISCONNECTION_COMPLETE 3861 // has been split, to first notify stack before shutting connection down 3862 // see end of function, too. 3863 case HCI_EVENT_DISCONNECTION_COMPLETE: 3864 if (packet[2]) break; // status != 0 3865 handle = little_endian_read_16(packet, 3); 3866 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3867 if (hci_stack->acl_fragmentation_total_size > 0u) { 3868 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3869 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3870 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3871 hci_stack->acl_fragmentation_total_size = 0; 3872 hci_stack->acl_fragmentation_pos = 0; 3873 if (release_buffer){ 3874 hci_release_packet_buffer(); 3875 } 3876 } 3877 } 3878 3879 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3880 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3881 if (hci_stack->iso_fragmentation_total_size > 0u) { 3882 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3883 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3884 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3885 hci_stack->iso_fragmentation_total_size = 0; 3886 hci_stack->iso_fragmentation_pos = 0; 3887 if (release_buffer){ 3888 hci_release_packet_buffer(); 3889 } 3890 } 3891 } 3892 3893 // finalize iso stream if handle matches 3894 iso_stream = hci_iso_stream_for_con_handle(handle); 3895 if (iso_stream != NULL){ 3896 hci_iso_stream_finalize(iso_stream); 3897 break; 3898 } 3899 #endif 3900 3901 conn = hci_connection_for_handle(handle); 3902 if (!conn) break; 3903 #ifdef ENABLE_CLASSIC 3904 // pairing failed if it was ongoing 3905 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3906 #endif 3907 3908 // emit dedicatd bonding event 3909 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3910 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3911 } 3912 3913 // mark connection for shutdown, stop timers, reset state 3914 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3915 hci_connection_stop_timer(conn); 3916 hci_connection_init(conn); 3917 3918 #ifdef ENABLE_BLE 3919 #ifdef ENABLE_LE_PERIPHERAL 3920 // re-enable advertisements for le connections if active 3921 if (hci_is_le_connection(conn)){ 3922 hci_update_advertisements_enabled_for_current_roles(); 3923 } 3924 #endif 3925 #endif 3926 break; 3927 3928 case HCI_EVENT_HARDWARE_ERROR: 3929 log_error("Hardware Error: 0x%02x", packet[2]); 3930 if (hci_stack->hardware_error_callback){ 3931 (*hci_stack->hardware_error_callback)(packet[2]); 3932 } else { 3933 // if no special requests, just reboot stack 3934 hci_power_control_off(); 3935 hci_power_control_on(); 3936 } 3937 break; 3938 3939 #ifdef ENABLE_CLASSIC 3940 case HCI_EVENT_ROLE_CHANGE: 3941 if (packet[2]) break; // status != 0 3942 reverse_bd_addr(&packet[3], addr); 3943 addr_type = BD_ADDR_TYPE_ACL; 3944 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3945 if (!conn) break; 3946 conn->role = packet[9]; 3947 break; 3948 #endif 3949 3950 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3951 // release packet buffer only for asynchronous transport and if there are not further fragments 3952 if (hci_transport_synchronous()) { 3953 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3954 return; // instead of break: to avoid re-entering hci_run() 3955 } 3956 hci_stack->acl_fragmentation_tx_active = 0; 3957 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3958 hci_stack->iso_fragmentation_tx_active = 0; 3959 if (hci_stack->iso_fragmentation_total_size) break; 3960 #endif 3961 if (hci_stack->acl_fragmentation_total_size) break; 3962 hci_release_packet_buffer(); 3963 3964 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3965 hci_iso_notify_can_send_now(); 3966 #endif 3967 // L2CAP receives this event via the hci_emit_event below 3968 3969 #ifdef ENABLE_CLASSIC 3970 // For SCO, we do the can_send_now_check here 3971 hci_notify_if_sco_can_send_now(); 3972 #endif 3973 break; 3974 3975 #ifdef ENABLE_CLASSIC 3976 case HCI_EVENT_SCO_CAN_SEND_NOW: 3977 // For SCO, we do the can_send_now_check here 3978 hci_stack->sco_can_send_now = true; 3979 hci_notify_if_sco_can_send_now(); 3980 return; 3981 3982 // explode inquriy results for easier consumption 3983 case HCI_EVENT_INQUIRY_RESULT: 3984 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 3985 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 3986 gap_inquiry_explode(packet, size); 3987 break; 3988 #endif 3989 3990 #ifdef ENABLE_BLE 3991 case HCI_EVENT_LE_META: 3992 switch (packet[2]){ 3993 #ifdef ENABLE_LE_CENTRAL 3994 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 3995 if (!hci_stack->le_scanning_enabled) break; 3996 le_handle_advertisement_report(packet, size); 3997 break; 3998 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3999 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4000 if (!hci_stack->le_scanning_enabled) break; 4001 le_handle_extended_advertisement_report(packet, size); 4002 break; 4003 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4004 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4005 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4006 break; 4007 #endif 4008 #endif 4009 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4010 event_handle_le_connection_complete(packet); 4011 break; 4012 4013 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4014 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4015 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4016 conn = hci_connection_for_handle(handle); 4017 if (!conn) break; 4018 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4019 break; 4020 4021 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4022 // connection 4023 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4024 conn = hci_connection_for_handle(handle); 4025 if (conn) { 4026 // read arguments 4027 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4028 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4029 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4030 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4031 4032 // validate against current connection parameter range 4033 le_connection_parameter_range_t existing_range; 4034 gap_get_connection_parameter_range(&existing_range); 4035 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4036 if (update_parameter){ 4037 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4038 conn->le_conn_interval_min = le_conn_interval_min; 4039 conn->le_conn_interval_max = le_conn_interval_max; 4040 conn->le_conn_latency = le_conn_latency; 4041 conn->le_supervision_timeout = le_supervision_timeout; 4042 } else { 4043 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4044 } 4045 } 4046 break; 4047 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4048 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4049 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4050 conn = hci_connection_for_handle(handle); 4051 if (conn) { 4052 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4053 } 4054 break; 4055 #endif 4056 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4057 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4058 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4059 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4060 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4061 iso_stream = hci_iso_stream_for_con_handle(handle); 4062 btstack_assert(iso_stream != NULL); 4063 // track SDU 4064 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4065 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4066 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4067 // CIS Accept by Peripheral 4068 if (status == ERROR_CODE_SUCCESS){ 4069 if (iso_stream->max_sdu_p_to_c > 0){ 4070 // we're peripheral and we will send data 4071 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4072 } else { 4073 // we're peripheral and we will only receive data 4074 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4075 } 4076 } else { 4077 hci_iso_stream_finalize(iso_stream); 4078 hci_emit_cis_created(HCI_ISO_GROUP_ID_INVALID, handle, status); 4079 } 4080 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4081 } else { 4082 // CIG Setup by Central 4083 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4084 btstack_assert(cig != NULL); 4085 // update iso stream state 4086 if (status == ERROR_CODE_SUCCESS){ 4087 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4088 } else { 4089 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4090 } 4091 // update cig state 4092 uint8_t i; 4093 for (i=0;i<cig->num_cis;i++){ 4094 if (cig->cis_con_handles[i] == handle){ 4095 cig->cis_setup_active[i] = false; 4096 if (status == ERROR_CODE_SUCCESS){ 4097 cig->cis_established[i] = true; 4098 } else { 4099 hci_emit_cis_created(cig->cig_id, handle, status); 4100 } 4101 } 4102 } 4103 4104 // trigger iso path setup if complete 4105 bool cis_setup_active = false; 4106 for (i=0;i<cig->num_cis;i++){ 4107 cis_setup_active |= cig->cis_setup_active[i]; 4108 } 4109 if (cis_setup_active == false){ 4110 cig->state_vars.next_cis = 0; 4111 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4112 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4113 } 4114 } 4115 } 4116 break; 4117 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4118 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4119 big = hci_big_for_handle(packet[4]); 4120 if (big != NULL){ 4121 uint8_t status = packet[3]; 4122 if (status == ERROR_CODE_SUCCESS){ 4123 // store bis_con_handles and trigger iso path setup 4124 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4125 uint8_t i; 4126 for (i=0;i<num_bis;i++){ 4127 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4128 big->bis_con_handles[i] = bis_handle; 4129 // assign bis handle 4130 btstack_linked_list_iterator_t it; 4131 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4132 while (btstack_linked_list_iterator_has_next(&it)){ 4133 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4134 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4135 (iso_stream->group_id == big->big_handle)){ 4136 iso_stream->con_handle = bis_handle; 4137 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4138 break; 4139 } 4140 } 4141 } 4142 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4143 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4144 big->state_vars.next_bis = 0; 4145 } 4146 } else { 4147 // create BIG failed or has been stopped by us 4148 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4149 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4150 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4151 hci_emit_big_created(big, status); 4152 } else { 4153 hci_emit_big_terminated(big); 4154 } 4155 } 4156 } 4157 break; 4158 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4159 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4160 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4161 if (big != NULL){ 4162 // finalize associated ISO streams 4163 btstack_linked_list_iterator_t it; 4164 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4165 while (btstack_linked_list_iterator_has_next(&it)){ 4166 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4167 if (iso_stream->group_id == big->big_handle){ 4168 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->con_handle); 4169 btstack_linked_list_iterator_remove(&it); 4170 btstack_memory_hci_iso_stream_free(iso_stream); 4171 } 4172 } 4173 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4174 switch (big->state){ 4175 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4176 hci_emit_big_created(big, big->state_vars.status); 4177 break; 4178 default: 4179 hci_emit_big_terminated(big); 4180 break; 4181 } 4182 } 4183 break; 4184 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4185 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4186 big_sync = hci_big_sync_for_handle(packet[4]); 4187 if (big_sync != NULL){ 4188 uint8_t status = packet[3]; 4189 uint8_t big_handle = packet[4]; 4190 if (status == ERROR_CODE_SUCCESS){ 4191 // store bis_con_handles and trigger iso path setup 4192 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4193 uint8_t i; 4194 for (i=0;i<num_bis;i++){ 4195 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4196 } 4197 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4198 // trigger iso path setup 4199 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4200 big_sync->state_vars.next_bis = 0; 4201 } 4202 } else { 4203 // create BIG Sync failed or has been stopped by us 4204 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4205 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4206 hci_emit_big_sync_created(big_sync, status); 4207 } else { 4208 hci_emit_big_sync_stopped(big_handle); 4209 } 4210 } 4211 } 4212 break; 4213 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4214 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4215 big_sync = hci_big_sync_for_handle(packet[4]); 4216 if (big_sync != NULL){ 4217 uint8_t big_handle = packet[4]; 4218 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4219 hci_emit_big_sync_stopped(big_handle); 4220 } 4221 break; 4222 #endif 4223 default: 4224 break; 4225 } 4226 break; 4227 #endif 4228 case HCI_EVENT_VENDOR_SPECIFIC: 4229 // Vendor specific commands often create vendor specific event instead of num completed packets 4230 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4231 switch (hci_stack->manufacturer){ 4232 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4233 hci_stack->num_cmd_packets = 1; 4234 break; 4235 default: 4236 break; 4237 } 4238 break; 4239 default: 4240 break; 4241 } 4242 4243 handle_event_for_current_stack_state(packet, size); 4244 4245 // notify upper stack 4246 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4247 4248 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4249 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4250 handle = little_endian_read_16(packet, 3); 4251 hci_connection_t * aConn = hci_connection_for_handle(handle); 4252 // discard connection if app did not trigger a reconnect in the event handler 4253 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4254 hci_shutdown_connection(aConn); 4255 } 4256 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4257 hci_controller_dump_packets(); 4258 #endif 4259 } 4260 4261 // execute main loop 4262 hci_run(); 4263 } 4264 4265 #ifdef ENABLE_CLASSIC 4266 4267 #ifdef ENABLE_SCO_OVER_HCI 4268 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4269 static void sco_schedule_tx(hci_connection_t * conn); 4270 4271 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4272 log_debug("SCO TX Timeout"); 4273 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4274 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4275 if (!conn) return; 4276 4277 // trigger send 4278 conn->sco_tx_ready = 1; 4279 // extra packet if CVSD but SCO buffer is too short 4280 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4281 conn->sco_tx_ready++; 4282 } 4283 hci_notify_if_sco_can_send_now(); 4284 } 4285 4286 4287 #define SCO_TX_AFTER_RX_MS (6) 4288 4289 static void sco_schedule_tx(hci_connection_t * conn){ 4290 4291 uint32_t now = btstack_run_loop_get_time_ms(); 4292 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4293 int time_delta_ms = sco_tx_ms - now; 4294 4295 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4296 4297 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4298 btstack_run_loop_remove_timer(timer); 4299 btstack_run_loop_set_timer(timer, time_delta_ms); 4300 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4301 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4302 btstack_run_loop_add_timer(timer); 4303 } 4304 #endif 4305 4306 static void sco_handler(uint8_t * packet, uint16_t size){ 4307 // lookup connection struct 4308 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4309 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4310 if (!conn) return; 4311 4312 #ifdef ENABLE_SCO_OVER_HCI 4313 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4314 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4315 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4316 packet[2] = 0x3c; 4317 memmove(&packet[3], &packet[23], 63); 4318 size = 63; 4319 } 4320 } 4321 4322 if (hci_have_usb_transport()){ 4323 // Nothing to do 4324 } else { 4325 // 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); 4326 if (hci_stack->synchronous_flow_control_enabled == 0){ 4327 uint32_t now = btstack_run_loop_get_time_ms(); 4328 4329 if (!conn->sco_rx_valid){ 4330 // ignore first 10 packets 4331 conn->sco_rx_count++; 4332 // log_debug("sco rx count %u", conn->sco_rx_count); 4333 if (conn->sco_rx_count == 10) { 4334 // use first timestamp as is and pretent it just started 4335 conn->sco_rx_ms = now; 4336 conn->sco_rx_valid = 1; 4337 conn->sco_rx_count = 0; 4338 sco_schedule_tx(conn); 4339 } 4340 } else { 4341 // track expected arrival timme 4342 conn->sco_rx_count++; 4343 conn->sco_rx_ms += 7; 4344 int delta = (int32_t) (now - conn->sco_rx_ms); 4345 if (delta > 0){ 4346 conn->sco_rx_ms++; 4347 } 4348 // log_debug("sco rx %u", conn->sco_rx_ms); 4349 sco_schedule_tx(conn); 4350 } 4351 } 4352 } 4353 #endif 4354 4355 // deliver to app 4356 if (hci_stack->sco_packet_handler) { 4357 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4358 } 4359 4360 #ifdef HAVE_SCO_TRANSPORT 4361 // We can send one packet for each received packet 4362 conn->sco_tx_ready++; 4363 hci_notify_if_sco_can_send_now(); 4364 #endif 4365 4366 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4367 conn->num_packets_completed++; 4368 hci_stack->host_completed_packets = 1; 4369 hci_run(); 4370 #endif 4371 } 4372 #endif 4373 4374 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4375 hci_dump_packet(packet_type, 1, packet, size); 4376 switch (packet_type) { 4377 case HCI_EVENT_PACKET: 4378 event_handler(packet, size); 4379 break; 4380 case HCI_ACL_DATA_PACKET: 4381 acl_handler(packet, size); 4382 break; 4383 #ifdef ENABLE_CLASSIC 4384 case HCI_SCO_DATA_PACKET: 4385 sco_handler(packet, size); 4386 break; 4387 #endif 4388 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4389 case HCI_ISO_DATA_PACKET: 4390 hci_iso_packet_handler(packet, size); 4391 break; 4392 #endif 4393 default: 4394 break; 4395 } 4396 } 4397 4398 /** 4399 * @brief Add event packet handler. 4400 */ 4401 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4402 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4403 } 4404 4405 /** 4406 * @brief Remove event packet handler. 4407 */ 4408 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4409 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4410 } 4411 4412 /** Register HCI packet handlers */ 4413 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4414 hci_stack->acl_packet_handler = handler; 4415 } 4416 4417 #ifdef ENABLE_CLASSIC 4418 /** 4419 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4420 */ 4421 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4422 hci_stack->sco_packet_handler = handler; 4423 } 4424 #endif 4425 4426 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4427 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4428 hci_stack->iso_packet_handler = handler; 4429 } 4430 #endif 4431 4432 static void hci_state_reset(void){ 4433 // no connections yet 4434 hci_stack->connections = NULL; 4435 4436 // keep discoverable/connectable as this has been requested by the client(s) 4437 // hci_stack->discoverable = 0; 4438 // hci_stack->connectable = 0; 4439 // hci_stack->bondable = 1; 4440 // hci_stack->own_addr_type = 0; 4441 4442 // buffer is free 4443 hci_stack->hci_packet_buffer_reserved = false; 4444 4445 // no pending cmds 4446 hci_stack->decline_reason = 0; 4447 4448 hci_stack->secure_connections_active = false; 4449 4450 #ifdef ENABLE_CLASSIC 4451 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4452 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4453 4454 hci_stack->gap_tasks_classic = 4455 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4456 GAP_TASK_SET_CLASS_OF_DEVICE | 4457 GAP_TASK_SET_LOCAL_NAME | 4458 GAP_TASK_SET_EIR_DATA | 4459 GAP_TASK_WRITE_SCAN_ENABLE | 4460 GAP_TASK_WRITE_PAGE_TIMEOUT; 4461 #endif 4462 4463 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4464 hci_stack->classic_read_local_oob_data = false; 4465 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4466 #endif 4467 4468 // LE 4469 #ifdef ENABLE_BLE 4470 memset(hci_stack->le_random_address, 0, 6); 4471 hci_stack->le_random_address_set = 0; 4472 #endif 4473 #ifdef ENABLE_LE_CENTRAL 4474 hci_stack->le_scanning_active = false; 4475 hci_stack->le_scanning_param_update = true; 4476 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4477 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4478 hci_stack->le_whitelist_capacity = 0; 4479 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4480 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4481 #endif 4482 #endif 4483 #ifdef ENABLE_LE_PERIPHERAL 4484 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4485 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4486 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4487 } 4488 if (hci_stack->le_advertisements_data != NULL){ 4489 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4490 } 4491 #endif 4492 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4493 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4494 #endif 4495 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4496 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4497 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4498 #endif 4499 } 4500 4501 #ifdef ENABLE_CLASSIC 4502 /** 4503 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4504 */ 4505 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4506 // store and open remote device db 4507 hci_stack->link_key_db = link_key_db; 4508 if (hci_stack->link_key_db) { 4509 hci_stack->link_key_db->open(); 4510 } 4511 } 4512 #endif 4513 4514 void hci_init(const hci_transport_t *transport, const void *config){ 4515 4516 #ifdef HAVE_MALLOC 4517 if (!hci_stack) { 4518 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4519 } 4520 #else 4521 hci_stack = &hci_stack_static; 4522 #endif 4523 memset(hci_stack, 0, sizeof(hci_stack_t)); 4524 4525 // reference to use transport layer implementation 4526 hci_stack->hci_transport = transport; 4527 4528 // reference to used config 4529 hci_stack->config = config; 4530 4531 // setup pointer for outgoing packet buffer 4532 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4533 4534 // max acl payload size defined in config.h 4535 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4536 4537 // register packet handlers with transport 4538 transport->register_packet_handler(&packet_handler); 4539 4540 hci_stack->state = HCI_STATE_OFF; 4541 4542 // class of device 4543 hci_stack->class_of_device = 0x007a020c; // Smartphone 4544 4545 // bondable by default 4546 hci_stack->bondable = 1; 4547 4548 #ifdef ENABLE_CLASSIC 4549 // classic name 4550 hci_stack->local_name = default_classic_name; 4551 4552 // Master slave policy 4553 hci_stack->master_slave_policy = 1; 4554 4555 // Allow Role Switch 4556 hci_stack->allow_role_switch = 1; 4557 4558 // Default / minimum security level = 2 4559 hci_stack->gap_security_level = LEVEL_2; 4560 4561 // Default Security Mode 4 4562 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4563 4564 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4565 hci_stack->gap_required_encyrption_key_size = 7; 4566 4567 // Link Supervision Timeout 4568 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4569 4570 #endif 4571 4572 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4573 hci_stack->ssp_enable = 1; 4574 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4575 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4576 hci_stack->ssp_auto_accept = 1; 4577 4578 // Secure Connections: enable (requires support from Controller) 4579 hci_stack->secure_connections_enable = true; 4580 4581 // voice setting - signed 16 bit pcm data with CVSD over the air 4582 hci_stack->sco_voice_setting = 0x60; 4583 4584 #ifdef ENABLE_LE_CENTRAL 4585 // connection parameter to use for outgoing connections 4586 hci_stack->le_connection_scan_interval = 0x0060; // 60ms 4587 hci_stack->le_connection_scan_window = 0x0030; // 30ms 4588 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4589 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4590 hci_stack->le_connection_latency = 4; // 4 4591 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4592 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 4593 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 4594 4595 // default LE Scanning 4596 hci_stack->le_scan_type = 0x1; // active 4597 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4598 hci_stack->le_scan_window = 0x30; // 30 ms 4599 #endif 4600 4601 #ifdef ENABLE_LE_PERIPHERAL 4602 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4603 #endif 4604 4605 // connection parameter range used to answer connection parameter update requests in l2cap 4606 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4607 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4608 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4609 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4610 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4611 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4612 4613 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4614 hci_stack->iso_packets_to_queue = 1; 4615 #endif 4616 4617 hci_state_reset(); 4618 } 4619 4620 void hci_deinit(void){ 4621 btstack_run_loop_remove_timer(&hci_stack->timeout); 4622 #ifdef HAVE_MALLOC 4623 if (hci_stack) { 4624 free(hci_stack); 4625 } 4626 #endif 4627 hci_stack = NULL; 4628 4629 #ifdef ENABLE_CLASSIC 4630 disable_l2cap_timeouts = 0; 4631 #endif 4632 } 4633 4634 /** 4635 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4636 */ 4637 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4638 hci_stack->chipset = chipset_driver; 4639 4640 // reset chipset driver - init is also called on power_up 4641 if (hci_stack->chipset && hci_stack->chipset->init){ 4642 hci_stack->chipset->init(hci_stack->config); 4643 } 4644 } 4645 4646 /** 4647 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4648 */ 4649 void hci_set_control(const btstack_control_t *hardware_control){ 4650 // references to used control implementation 4651 hci_stack->control = hardware_control; 4652 // init with transport config 4653 hardware_control->init(hci_stack->config); 4654 } 4655 4656 static void hci_discard_connections(void){ 4657 btstack_linked_list_iterator_t it; 4658 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4659 while (btstack_linked_list_iterator_has_next(&it)){ 4660 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4661 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4662 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4663 hci_shutdown_connection(connection); 4664 } 4665 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4666 while (hci_stack->iso_streams != NULL){ 4667 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4668 } 4669 #endif 4670 } 4671 4672 void hci_close(void){ 4673 4674 #ifdef ENABLE_CLASSIC 4675 // close remote device db 4676 if (hci_stack->link_key_db) { 4677 hci_stack->link_key_db->close(); 4678 } 4679 #endif 4680 4681 hci_discard_connections(); 4682 4683 hci_power_control(HCI_POWER_OFF); 4684 4685 #ifdef HAVE_MALLOC 4686 free(hci_stack); 4687 #endif 4688 hci_stack = NULL; 4689 } 4690 4691 #ifdef HAVE_SCO_TRANSPORT 4692 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4693 hci_stack->sco_transport = sco_transport; 4694 sco_transport->register_packet_handler(&packet_handler); 4695 } 4696 #endif 4697 4698 #ifdef ENABLE_CLASSIC 4699 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4700 // validate ranage and set 4701 if (encryption_key_size < 7) return; 4702 if (encryption_key_size > 16) return; 4703 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4704 } 4705 4706 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4707 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4708 hci_stack->gap_security_mode = security_mode; 4709 return ERROR_CODE_SUCCESS; 4710 } else { 4711 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4712 } 4713 } 4714 4715 gap_security_mode_t gap_get_security_mode(void){ 4716 return hci_stack->gap_security_mode; 4717 } 4718 4719 void gap_set_security_level(gap_security_level_t security_level){ 4720 hci_stack->gap_security_level = security_level; 4721 } 4722 4723 gap_security_level_t gap_get_security_level(void){ 4724 if (hci_stack->gap_secure_connections_only_mode){ 4725 return LEVEL_4; 4726 } 4727 return hci_stack->gap_security_level; 4728 } 4729 4730 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4731 hci_stack->gap_minimal_service_security_level = security_level; 4732 } 4733 4734 void gap_set_secure_connections_only_mode(bool enable){ 4735 hci_stack->gap_secure_connections_only_mode = enable; 4736 } 4737 4738 bool gap_get_secure_connections_only_mode(void){ 4739 return hci_stack->gap_secure_connections_only_mode; 4740 } 4741 #endif 4742 4743 #ifdef ENABLE_CLASSIC 4744 void gap_set_class_of_device(uint32_t class_of_device){ 4745 hci_stack->class_of_device = class_of_device; 4746 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4747 hci_run(); 4748 } 4749 4750 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4751 hci_stack->default_link_policy_settings = default_link_policy_settings; 4752 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4753 hci_run(); 4754 } 4755 4756 void gap_set_allow_role_switch(bool allow_role_switch){ 4757 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4758 } 4759 4760 uint8_t hci_get_allow_role_switch(void){ 4761 return hci_stack->allow_role_switch; 4762 } 4763 4764 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4765 hci_stack->link_supervision_timeout = link_supervision_timeout; 4766 } 4767 4768 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4769 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4770 } 4771 4772 uint16_t hci_automatic_flush_timeout(void){ 4773 return hci_stack->automatic_flush_timeout; 4774 } 4775 4776 void hci_disable_l2cap_timeout_check(void){ 4777 disable_l2cap_timeouts = 1; 4778 } 4779 #endif 4780 4781 #ifndef HAVE_HOST_CONTROLLER_API 4782 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4783 void hci_set_bd_addr(bd_addr_t addr){ 4784 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4785 hci_stack->custom_bd_addr_set = 1; 4786 } 4787 #endif 4788 4789 // State-Module-Driver overview 4790 // state module low-level 4791 // HCI_STATE_OFF off close 4792 // HCI_STATE_INITIALIZING, on open 4793 // HCI_STATE_WORKING, on open 4794 // HCI_STATE_HALTING, on open 4795 // HCI_STATE_SLEEPING, off/sleep close 4796 // HCI_STATE_FALLING_ASLEEP on open 4797 4798 static int hci_power_control_on(void){ 4799 4800 // power on 4801 int err = 0; 4802 if (hci_stack->control && hci_stack->control->on){ 4803 err = (*hci_stack->control->on)(); 4804 } 4805 if (err){ 4806 log_error( "POWER_ON failed"); 4807 hci_emit_hci_open_failed(); 4808 return err; 4809 } 4810 4811 // int chipset driver 4812 if (hci_stack->chipset && hci_stack->chipset->init){ 4813 hci_stack->chipset->init(hci_stack->config); 4814 } 4815 4816 // init transport 4817 if (hci_stack->hci_transport->init){ 4818 hci_stack->hci_transport->init(hci_stack->config); 4819 } 4820 4821 // open transport 4822 err = hci_stack->hci_transport->open(); 4823 if (err){ 4824 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4825 if (hci_stack->control && hci_stack->control->off){ 4826 (*hci_stack->control->off)(); 4827 } 4828 hci_emit_hci_open_failed(); 4829 return err; 4830 } 4831 return 0; 4832 } 4833 4834 static void hci_power_control_off(void){ 4835 4836 log_info("hci_power_control_off"); 4837 4838 // close low-level device 4839 hci_stack->hci_transport->close(); 4840 4841 log_info("hci_power_control_off - hci_transport closed"); 4842 4843 // power off 4844 if (hci_stack->control && hci_stack->control->off){ 4845 (*hci_stack->control->off)(); 4846 } 4847 4848 log_info("hci_power_control_off - control closed"); 4849 4850 hci_stack->state = HCI_STATE_OFF; 4851 } 4852 4853 static void hci_power_control_sleep(void){ 4854 4855 log_info("hci_power_control_sleep"); 4856 4857 #if 0 4858 // don't close serial port during sleep 4859 4860 // close low-level device 4861 hci_stack->hci_transport->close(hci_stack->config); 4862 #endif 4863 4864 // sleep mode 4865 if (hci_stack->control && hci_stack->control->sleep){ 4866 (*hci_stack->control->sleep)(); 4867 } 4868 4869 hci_stack->state = HCI_STATE_SLEEPING; 4870 } 4871 4872 static int hci_power_control_wake(void){ 4873 4874 log_info("hci_power_control_wake"); 4875 4876 // wake on 4877 if (hci_stack->control && hci_stack->control->wake){ 4878 (*hci_stack->control->wake)(); 4879 } 4880 4881 #if 0 4882 // open low-level device 4883 int err = hci_stack->hci_transport->open(hci_stack->config); 4884 if (err){ 4885 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4886 if (hci_stack->control && hci_stack->control->off){ 4887 (*hci_stack->control->off)(); 4888 } 4889 hci_emit_hci_open_failed(); 4890 return err; 4891 } 4892 #endif 4893 4894 return 0; 4895 } 4896 4897 static void hci_power_enter_initializing_state(void){ 4898 // set up state machine 4899 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4900 hci_stack->hci_packet_buffer_reserved = false; 4901 hci_stack->state = HCI_STATE_INITIALIZING; 4902 hci_stack->substate = HCI_INIT_SEND_RESET; 4903 } 4904 4905 static void hci_power_enter_halting_state(void){ 4906 #ifdef ENABLE_BLE 4907 // drop entries scheduled for removal, mark others for re-adding 4908 btstack_linked_list_iterator_t it; 4909 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 4910 while (btstack_linked_list_iterator_has_next(&it)){ 4911 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 4912 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 4913 btstack_linked_list_iterator_remove(&it); 4914 btstack_memory_whitelist_entry_free(entry); 4915 } else { 4916 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 4917 } 4918 } 4919 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4920 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 4921 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 4922 while (btstack_linked_list_iterator_has_next(&it)){ 4923 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 4924 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 4925 btstack_linked_list_iterator_remove(&it); 4926 btstack_memory_periodic_advertiser_list_entry_free(entry); 4927 } else { 4928 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 4929 continue; 4930 } 4931 } 4932 #endif 4933 #endif 4934 // see hci_run 4935 hci_stack->state = HCI_STATE_HALTING; 4936 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4937 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4938 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4939 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4940 btstack_run_loop_add_timer(&hci_stack->timeout); 4941 } 4942 4943 // returns error 4944 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4945 int err; 4946 switch (power_mode){ 4947 case HCI_POWER_ON: 4948 err = hci_power_control_on(); 4949 if (err != 0) { 4950 log_error("hci_power_control_on() error %d", err); 4951 return err; 4952 } 4953 hci_power_enter_initializing_state(); 4954 break; 4955 case HCI_POWER_OFF: 4956 // do nothing 4957 break; 4958 case HCI_POWER_SLEEP: 4959 // do nothing (with SLEEP == OFF) 4960 break; 4961 default: 4962 btstack_assert(false); 4963 break; 4964 } 4965 return ERROR_CODE_SUCCESS; 4966 } 4967 4968 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 4969 switch (power_mode){ 4970 case HCI_POWER_ON: 4971 // do nothing 4972 break; 4973 case HCI_POWER_OFF: 4974 // no connections yet, just turn it off 4975 hci_power_control_off(); 4976 break; 4977 case HCI_POWER_SLEEP: 4978 // no connections yet, just turn it off 4979 hci_power_control_sleep(); 4980 break; 4981 default: 4982 btstack_assert(false); 4983 break; 4984 } 4985 return ERROR_CODE_SUCCESS; 4986 } 4987 4988 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 4989 switch (power_mode){ 4990 case HCI_POWER_ON: 4991 // do nothing 4992 break; 4993 case HCI_POWER_OFF: 4994 hci_power_enter_halting_state(); 4995 break; 4996 case HCI_POWER_SLEEP: 4997 // see hci_run 4998 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4999 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5000 break; 5001 default: 5002 btstack_assert(false); 5003 break; 5004 } 5005 return ERROR_CODE_SUCCESS; 5006 } 5007 5008 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5009 switch (power_mode){ 5010 case HCI_POWER_ON: 5011 hci_power_enter_initializing_state(); 5012 break; 5013 case HCI_POWER_OFF: 5014 // do nothing 5015 break; 5016 case HCI_POWER_SLEEP: 5017 // see hci_run 5018 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5019 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5020 break; 5021 default: 5022 btstack_assert(false); 5023 break; 5024 } 5025 return ERROR_CODE_SUCCESS; 5026 } 5027 5028 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5029 switch (power_mode){ 5030 case HCI_POWER_ON: 5031 hci_power_enter_initializing_state(); 5032 break; 5033 case HCI_POWER_OFF: 5034 hci_power_enter_halting_state(); 5035 break; 5036 case HCI_POWER_SLEEP: 5037 // do nothing 5038 break; 5039 default: 5040 btstack_assert(false); 5041 break; 5042 } 5043 return ERROR_CODE_SUCCESS; 5044 } 5045 5046 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5047 int err; 5048 switch (power_mode){ 5049 case HCI_POWER_ON: 5050 err = hci_power_control_wake(); 5051 if (err) return err; 5052 hci_power_enter_initializing_state(); 5053 break; 5054 case HCI_POWER_OFF: 5055 hci_power_enter_halting_state(); 5056 break; 5057 case HCI_POWER_SLEEP: 5058 // do nothing 5059 break; 5060 default: 5061 btstack_assert(false); 5062 break; 5063 } 5064 return ERROR_CODE_SUCCESS; 5065 } 5066 5067 int hci_power_control(HCI_POWER_MODE power_mode){ 5068 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5069 btstack_run_loop_remove_timer(&hci_stack->timeout); 5070 int err = 0; 5071 switch (hci_stack->state){ 5072 case HCI_STATE_OFF: 5073 err = hci_power_control_state_off(power_mode); 5074 break; 5075 case HCI_STATE_INITIALIZING: 5076 err = hci_power_control_state_initializing(power_mode); 5077 break; 5078 case HCI_STATE_WORKING: 5079 err = hci_power_control_state_working(power_mode); 5080 break; 5081 case HCI_STATE_HALTING: 5082 err = hci_power_control_state_halting(power_mode); 5083 break; 5084 case HCI_STATE_FALLING_ASLEEP: 5085 err = hci_power_control_state_falling_asleep(power_mode); 5086 break; 5087 case HCI_STATE_SLEEPING: 5088 err = hci_power_control_state_sleeping(power_mode); 5089 break; 5090 default: 5091 btstack_assert(false); 5092 break; 5093 } 5094 if (err != 0){ 5095 return err; 5096 } 5097 5098 // create internal event 5099 hci_emit_state(); 5100 5101 // trigger next/first action 5102 hci_run(); 5103 5104 return 0; 5105 } 5106 5107 5108 static void hci_halting_run(void) { 5109 5110 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5111 5112 hci_connection_t *connection; 5113 #ifdef ENABLE_BLE 5114 #ifdef ENABLE_LE_PERIPHERAL 5115 bool stop_advertismenets; 5116 #endif 5117 #endif 5118 5119 switch (hci_stack->substate) { 5120 case HCI_HALTING_CLASSIC_STOP: 5121 #ifdef ENABLE_CLASSIC 5122 if (!hci_can_send_command_packet_now()) return; 5123 5124 if (hci_stack->connectable || hci_stack->discoverable){ 5125 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5126 hci_send_cmd(&hci_write_scan_enable, 0); 5127 return; 5128 } 5129 #endif 5130 /* fall through */ 5131 5132 case HCI_HALTING_LE_ADV_STOP: 5133 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5134 5135 #ifdef ENABLE_BLE 5136 #ifdef ENABLE_LE_PERIPHERAL 5137 if (!hci_can_send_command_packet_now()) return; 5138 5139 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5140 5141 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5142 if (hci_extended_advertising_supported()){ 5143 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5144 btstack_linked_list_iterator_t it; 5145 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5146 // stop all periodic advertisements and check if an extended set is active 5147 while (btstack_linked_list_iterator_has_next(&it)){ 5148 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5149 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5150 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5151 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5152 return; 5153 } 5154 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5155 stop_advertismenets = true; 5156 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5157 } 5158 } 5159 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5160 if (stop_advertismenets){ 5161 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5162 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5163 return; 5164 } 5165 } 5166 else 5167 #else /* ENABLE_LE_PERIPHERAL */ 5168 { 5169 if (stop_advertismenets) { 5170 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5171 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5172 return; 5173 } 5174 } 5175 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5176 #endif /* ENABLE_LE_PERIPHERAL */ 5177 #endif /* ENABLE_BLE */ 5178 5179 /* fall through */ 5180 5181 case HCI_HALTING_LE_SCAN_STOP: 5182 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5183 if (!hci_can_send_command_packet_now()) return; 5184 5185 #ifdef ENABLE_BLE 5186 #ifdef ENABLE_LE_CENTRAL 5187 if (hci_stack->le_scanning_active){ 5188 hci_le_scan_stop(); 5189 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5190 return; 5191 } 5192 #endif 5193 #endif 5194 5195 /* fall through */ 5196 5197 case HCI_HALTING_DISCONNECT_ALL: 5198 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5199 if (!hci_can_send_command_packet_now()) return; 5200 5201 // close all open connections 5202 connection = (hci_connection_t *) hci_stack->connections; 5203 if (connection) { 5204 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5205 5206 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5207 5208 // check state 5209 switch(connection->state) { 5210 case SENT_DISCONNECT: 5211 case RECEIVED_DISCONNECTION_COMPLETE: 5212 // wait until connection is gone 5213 return; 5214 default: 5215 break; 5216 } 5217 5218 // finally, send the disconnect command 5219 connection->state = SENT_DISCONNECT; 5220 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5221 return; 5222 } 5223 5224 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5225 // stop BIGs and BIG Syncs 5226 if (hci_stack->le_audio_bigs != NULL){ 5227 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5228 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5229 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5230 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5231 return; 5232 } 5233 if (hci_stack->le_audio_big_syncs != NULL){ 5234 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5235 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5236 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5237 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5238 return; 5239 } 5240 #endif 5241 5242 btstack_run_loop_remove_timer(&hci_stack->timeout); 5243 5244 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5245 log_info("HCI_STATE_HALTING: wait 50 ms"); 5246 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5247 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5248 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5249 btstack_run_loop_add_timer(&hci_stack->timeout); 5250 break; 5251 5252 case HCI_HALTING_W4_CLOSE_TIMER: 5253 // keep waiting 5254 break; 5255 5256 case HCI_HALTING_CLOSE: 5257 // close left over connections (that had not been properly closed before) 5258 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5259 hci_discard_connections(); 5260 5261 log_info("HCI_STATE_HALTING, calling off"); 5262 5263 // switch mode 5264 hci_power_control_off(); 5265 5266 log_info("HCI_STATE_HALTING, emitting state"); 5267 hci_emit_state(); 5268 log_info("HCI_STATE_HALTING, done"); 5269 break; 5270 5271 default: 5272 break; 5273 } 5274 }; 5275 5276 static void hci_falling_asleep_run(void){ 5277 hci_connection_t * connection; 5278 switch(hci_stack->substate) { 5279 case HCI_FALLING_ASLEEP_DISCONNECT: 5280 log_info("HCI_STATE_FALLING_ASLEEP"); 5281 // close all open connections 5282 connection = (hci_connection_t *) hci_stack->connections; 5283 if (connection){ 5284 5285 // send disconnect 5286 if (!hci_can_send_command_packet_now()) return; 5287 5288 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5289 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5290 5291 // send disconnected event right away - causes higher layer connections to get closed, too. 5292 hci_shutdown_connection(connection); 5293 return; 5294 } 5295 5296 if (hci_classic_supported()){ 5297 // disable page and inquiry scan 5298 if (!hci_can_send_command_packet_now()) return; 5299 5300 log_info("HCI_STATE_HALTING, disabling inq scans"); 5301 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5302 5303 // continue in next sub state 5304 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5305 break; 5306 } 5307 5308 /* fall through */ 5309 5310 case HCI_FALLING_ASLEEP_COMPLETE: 5311 log_info("HCI_STATE_HALTING, calling sleep"); 5312 // switch mode 5313 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5314 hci_emit_state(); 5315 break; 5316 5317 default: 5318 break; 5319 } 5320 } 5321 5322 #ifdef ENABLE_CLASSIC 5323 5324 static void hci_update_scan_enable(void){ 5325 // 2 = page scan, 1 = inq scan 5326 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5327 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5328 hci_run(); 5329 } 5330 5331 void gap_discoverable_control(uint8_t enable){ 5332 if (enable) enable = 1; // normalize argument 5333 5334 if (hci_stack->discoverable == enable){ 5335 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5336 return; 5337 } 5338 5339 hci_stack->discoverable = enable; 5340 hci_update_scan_enable(); 5341 } 5342 5343 void gap_connectable_control(uint8_t enable){ 5344 if (enable) enable = 1; // normalize argument 5345 5346 // don't emit event 5347 if (hci_stack->connectable == enable) return; 5348 5349 hci_stack->connectable = enable; 5350 hci_update_scan_enable(); 5351 } 5352 #endif 5353 5354 void gap_local_bd_addr(bd_addr_t address_buffer){ 5355 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5356 } 5357 5358 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5359 static void hci_host_num_completed_packets(void){ 5360 5361 // create packet manually as arrays are not supported and num_commands should not get reduced 5362 hci_reserve_packet_buffer(); 5363 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5364 5365 uint16_t size = 0; 5366 uint16_t num_handles = 0; 5367 packet[size++] = 0x35; 5368 packet[size++] = 0x0c; 5369 size++; // skip param len 5370 size++; // skip num handles 5371 5372 // add { handle, packets } entries 5373 btstack_linked_item_t * it; 5374 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5375 hci_connection_t * connection = (hci_connection_t *) it; 5376 if (connection->num_packets_completed){ 5377 little_endian_store_16(packet, size, connection->con_handle); 5378 size += 2; 5379 little_endian_store_16(packet, size, connection->num_packets_completed); 5380 size += 2; 5381 // 5382 num_handles++; 5383 connection->num_packets_completed = 0; 5384 } 5385 } 5386 5387 packet[2] = size - 3; 5388 packet[3] = num_handles; 5389 5390 hci_stack->host_completed_packets = 0; 5391 5392 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5393 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5394 5395 // release packet buffer for synchronous transport implementations 5396 if (hci_transport_synchronous()){ 5397 hci_release_packet_buffer(); 5398 hci_emit_transport_packet_sent(); 5399 } 5400 } 5401 #endif 5402 5403 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5404 UNUSED(ds); 5405 hci_stack->substate = HCI_HALTING_CLOSE; 5406 hci_halting_run(); 5407 } 5408 5409 static bool hci_run_acl_fragments(void){ 5410 if (hci_stack->acl_fragmentation_total_size > 0u) { 5411 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5412 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5413 if (connection) { 5414 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5415 hci_send_acl_packet_fragments(connection); 5416 return true; 5417 } 5418 } else { 5419 // connection gone -> discard further fragments 5420 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5421 hci_stack->acl_fragmentation_total_size = 0; 5422 hci_stack->acl_fragmentation_pos = 0; 5423 } 5424 } 5425 return false; 5426 } 5427 5428 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5429 static bool hci_run_iso_fragments(void){ 5430 if (hci_stack->iso_fragmentation_total_size > 0u) { 5431 // TODO: flow control 5432 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5433 hci_send_iso_packet_fragments(); 5434 return true; 5435 } 5436 } 5437 return false; 5438 } 5439 #endif 5440 5441 #ifdef ENABLE_CLASSIC 5442 5443 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5444 static bool hci_classic_operation_active(void) { 5445 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5446 return true; 5447 } 5448 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5449 return true; 5450 } 5451 btstack_linked_item_t * it; 5452 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5453 hci_connection_t *connection = (hci_connection_t *) it; 5454 switch (connection->state) { 5455 case SENT_CREATE_CONNECTION: 5456 case SENT_CANCEL_CONNECTION: 5457 case SENT_DISCONNECT: 5458 return true; 5459 default: 5460 break; 5461 } 5462 } 5463 return false; 5464 } 5465 #endif 5466 5467 static bool hci_run_general_gap_classic(void){ 5468 5469 // assert stack is working and classic is active 5470 if (hci_classic_supported() == false) return false; 5471 if (hci_stack->state != HCI_STATE_WORKING) return false; 5472 5473 // decline incoming connections 5474 if (hci_stack->decline_reason){ 5475 uint8_t reason = hci_stack->decline_reason; 5476 hci_stack->decline_reason = 0; 5477 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5478 return true; 5479 } 5480 5481 if (hci_stack->gap_tasks_classic != 0){ 5482 hci_run_gap_tasks_classic(); 5483 return true; 5484 } 5485 5486 // start/stop inquiry 5487 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5488 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5489 if (hci_classic_operation_active() == false) 5490 #endif 5491 { 5492 uint8_t duration = hci_stack->inquiry_state; 5493 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5494 if (hci_stack->inquiry_max_period_length != 0){ 5495 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); 5496 } else { 5497 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5498 } 5499 return true; 5500 } 5501 } 5502 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5503 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5504 hci_send_cmd(&hci_inquiry_cancel); 5505 return true; 5506 } 5507 5508 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5509 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5510 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5511 return true; 5512 } 5513 5514 // remote name request 5515 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5516 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5517 if (hci_classic_operation_active() == false) 5518 #endif 5519 { 5520 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5521 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5522 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5523 return true; 5524 } 5525 } 5526 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5527 // Local OOB data 5528 if (hci_stack->classic_read_local_oob_data){ 5529 hci_stack->classic_read_local_oob_data = false; 5530 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5531 hci_send_cmd(&hci_read_local_extended_oob_data); 5532 } else { 5533 hci_send_cmd(&hci_read_local_oob_data); 5534 } 5535 } 5536 #endif 5537 // pairing 5538 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5539 uint8_t state = hci_stack->gap_pairing_state; 5540 uint8_t pin_code[16]; 5541 switch (state){ 5542 case GAP_PAIRING_STATE_SEND_PIN: 5543 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5544 memset(pin_code, 0, 16); 5545 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5546 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5547 break; 5548 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5549 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5550 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5551 break; 5552 case GAP_PAIRING_STATE_SEND_PASSKEY: 5553 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5554 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5555 break; 5556 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5557 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5558 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5559 break; 5560 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5561 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5562 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5563 break; 5564 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5565 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5566 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5567 break; 5568 default: 5569 break; 5570 } 5571 return true; 5572 } 5573 return false; 5574 } 5575 #endif 5576 5577 #ifdef ENABLE_BLE 5578 5579 #ifdef ENABLE_LE_CENTRAL 5580 static void hci_le_scan_stop(void){ 5581 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5582 if (hci_extended_advertising_supported()) { 5583 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5584 } else 5585 #endif 5586 { 5587 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5588 } 5589 } 5590 5591 static void 5592 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5593 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5594 if (hci_extended_advertising_supported()) { 5595 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 5596 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 5597 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 5598 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 5599 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 5600 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 5601 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 5602 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 5603 hci_send_cmd(&hci_le_extended_create_connection, 5604 initiator_filter_policy, 5605 hci_stack->le_connection_own_addr_type, // our addr type: 5606 address_type, // peer address type 5607 address, // peer bd addr 5608 1, // initiating PHY - 1M 5609 le_connection_scan_interval, // conn scan interval 5610 le_connection_scan_window, // conn scan windows 5611 le_connection_interval_min, // conn interval min 5612 le_connection_interval_max, // conn interval max 5613 le_connection_latency, // conn latency 5614 le_supervision_timeout, // conn latency 5615 le_minimum_ce_length, // min ce length 5616 le_maximum_ce_length // max ce length 5617 ); 5618 } 5619 else 5620 #endif 5621 { 5622 hci_send_cmd(&hci_le_create_connection, 5623 hci_stack->le_connection_scan_interval, // conn scan interval 5624 hci_stack->le_connection_scan_window, // conn scan windows 5625 initiator_filter_policy, // don't use whitelist 5626 address_type, // peer address type 5627 address, // peer bd addr 5628 hci_stack->le_connection_own_addr_type, // our addr type: 5629 hci_stack->le_connection_interval_min, // conn interval min 5630 hci_stack->le_connection_interval_max, // conn interval max 5631 hci_stack->le_connection_latency, // conn latency 5632 hci_stack->le_supervision_timeout, // conn latency 5633 hci_stack->le_minimum_ce_length, // min ce length 5634 hci_stack->le_maximum_ce_length // max ce length 5635 ); 5636 } 5637 } 5638 #endif 5639 5640 #ifdef ENABLE_LE_PERIPHERAL 5641 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5642 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5643 uint8_t operation = 0; 5644 if (pos == 0){ 5645 // first fragment or complete data 5646 operation |= 1; 5647 } 5648 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5649 // last fragment or complete data 5650 operation |= 2; 5651 } 5652 return operation; 5653 } 5654 #endif 5655 #endif 5656 5657 static bool hci_run_general_gap_le(void){ 5658 5659 btstack_linked_list_iterator_t lit; 5660 5661 // Phase 1: collect what to stop 5662 5663 #ifdef ENABLE_LE_CENTRAL 5664 bool scanning_stop = false; 5665 bool connecting_stop = false; 5666 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5667 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5668 bool periodic_sync_stop = false; 5669 #endif 5670 #endif 5671 #endif 5672 5673 #ifdef ENABLE_LE_PERIPHERAL 5674 bool advertising_stop = false; 5675 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5676 le_advertising_set_t * advertising_stop_set = NULL; 5677 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5678 bool periodic_advertising_stop = false; 5679 #endif 5680 #endif 5681 #endif 5682 5683 // check if own address changes 5684 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5685 5686 // check if whitelist needs modification 5687 bool whitelist_modification_pending = false; 5688 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5689 while (btstack_linked_list_iterator_has_next(&lit)){ 5690 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5691 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5692 whitelist_modification_pending = true; 5693 break; 5694 } 5695 } 5696 5697 // check if resolving list needs modification 5698 bool resolving_list_modification_pending = false; 5699 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5700 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5701 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5702 resolving_list_modification_pending = true; 5703 } 5704 #endif 5705 5706 #ifdef ENABLE_LE_CENTRAL 5707 5708 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5709 // check if periodic advertiser list needs modification 5710 bool periodic_list_modification_pending = false; 5711 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5712 while (btstack_linked_list_iterator_has_next(&lit)){ 5713 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5714 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5715 periodic_list_modification_pending = true; 5716 break; 5717 } 5718 } 5719 #endif 5720 5721 // scanning control 5722 if (hci_stack->le_scanning_active) { 5723 // stop if: 5724 // - parameter change required 5725 // - it's disabled 5726 // - whitelist change required but used for scanning 5727 // - resolving list modified 5728 // - own address changes 5729 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5730 if ((hci_stack->le_scanning_param_update) || 5731 !hci_stack->le_scanning_enabled || 5732 (scanning_uses_whitelist && whitelist_modification_pending) || 5733 resolving_list_modification_pending || 5734 random_address_change){ 5735 5736 scanning_stop = true; 5737 } 5738 } 5739 5740 // connecting control 5741 bool connecting_with_whitelist; 5742 switch (hci_stack->le_connecting_state){ 5743 case LE_CONNECTING_DIRECT: 5744 case LE_CONNECTING_WHITELIST: 5745 // stop connecting if: 5746 // - connecting uses white and whitelist modification pending 5747 // - if it got disabled 5748 // - resolving list modified 5749 // - own address changes 5750 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5751 if ((connecting_with_whitelist && whitelist_modification_pending) || 5752 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5753 resolving_list_modification_pending || 5754 random_address_change) { 5755 5756 connecting_stop = true; 5757 } 5758 break; 5759 default: 5760 break; 5761 } 5762 5763 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5764 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5765 // periodic sync control 5766 bool sync_with_advertiser_list; 5767 switch(hci_stack->le_periodic_sync_state){ 5768 case LE_CONNECTING_DIRECT: 5769 case LE_CONNECTING_WHITELIST: 5770 // stop sync if: 5771 // - sync with advertiser list and advertiser list modification pending 5772 // - if it got disabled 5773 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5774 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5775 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5776 periodic_sync_stop = true; 5777 } 5778 break; 5779 default: 5780 break; 5781 } 5782 #endif 5783 #endif 5784 5785 #endif /* ENABLE_LE_CENTRAL */ 5786 5787 #ifdef ENABLE_LE_PERIPHERAL 5788 // le advertisement control 5789 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5790 // stop if: 5791 // - parameter change required 5792 // - random address used in advertising and changes 5793 // - it's disabled 5794 // - whitelist change required but used for advertisement filter policy 5795 // - resolving list modified 5796 // - own address changes 5797 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5798 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5799 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5800 if (advertising_change || 5801 (advertising_uses_random_address && random_address_change) || 5802 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5803 (advertising_uses_whitelist && whitelist_modification_pending) || 5804 resolving_list_modification_pending || 5805 random_address_change) { 5806 5807 advertising_stop = true; 5808 } 5809 } 5810 5811 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5812 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5813 btstack_linked_list_iterator_t it; 5814 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5815 while (btstack_linked_list_iterator_has_next(&it)){ 5816 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5817 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5818 // stop if: 5819 // - parameter change required 5820 // - random address used in connectable advertising and changes 5821 // - it's disabled 5822 // - whitelist change required but used for advertisement filter policy 5823 // - resolving list modified 5824 // - own address changes 5825 // - advertisement set will be removed 5826 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5827 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5828 bool advertising_uses_random_address = 5829 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5830 advertising_connectable; 5831 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5832 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5833 bool advertising_set_random_address_change = 5834 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5835 bool advertising_set_will_be_removed = 5836 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5837 if (advertising_parameter_change || 5838 (advertising_uses_random_address && advertising_set_random_address_change) || 5839 (advertising_enabled == false) || 5840 (advertising_uses_whitelist && whitelist_modification_pending) || 5841 resolving_list_modification_pending || 5842 advertising_set_will_be_removed) { 5843 5844 advertising_stop = true; 5845 advertising_stop_set = advertising_set; 5846 break; 5847 } 5848 } 5849 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5850 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5851 // stop if: 5852 // - it's disabled 5853 // - parameter change required 5854 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5855 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5856 if ((periodic_enabled == false) || periodic_parameter_change){ 5857 periodic_advertising_stop = true; 5858 advertising_stop_set = advertising_set; 5859 } 5860 } 5861 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5862 } 5863 } 5864 #endif 5865 5866 #endif 5867 5868 5869 // Phase 2: stop everything that should be off during modifications 5870 5871 5872 // 2.1 Outgoing connection 5873 #ifdef ENABLE_LE_CENTRAL 5874 if (connecting_stop){ 5875 hci_send_cmd(&hci_le_create_connection_cancel); 5876 return true; 5877 } 5878 #endif 5879 5880 // 2.2 Scanning 5881 #ifdef ENABLE_LE_CENTRAL 5882 if (scanning_stop){ 5883 hci_stack->le_scanning_active = false; 5884 hci_le_scan_stop(); 5885 return true; 5886 } 5887 5888 // 2.3 Periodic Sync 5889 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5890 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5891 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5892 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5893 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5894 return true; 5895 } 5896 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5897 if (periodic_sync_stop){ 5898 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5899 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5900 return true; 5901 } 5902 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5903 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5904 #endif /* ENABLE_LE_CENTRAL */ 5905 5906 // 2.4 Advertising: legacy, extended, periodic 5907 #ifdef ENABLE_LE_PERIPHERAL 5908 if (advertising_stop){ 5909 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5910 if (hci_extended_advertising_supported()) { 5911 uint8_t advertising_stop_handle; 5912 if (advertising_stop_set != NULL){ 5913 advertising_stop_handle = advertising_stop_set->advertising_handle; 5914 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5915 } else { 5916 advertising_stop_handle = 0; 5917 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5918 } 5919 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5920 const uint16_t durations[] = { 0 }; 5921 const uint16_t max_events[] = { 0 }; 5922 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5923 } else 5924 #endif 5925 { 5926 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5927 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5928 } 5929 return true; 5930 } 5931 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5932 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5933 if (periodic_advertising_stop){ 5934 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5935 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5936 return true; 5937 } 5938 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5939 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5940 #endif /* ENABLE_LE_PERIPHERAL */ 5941 5942 5943 // Phase 3: modify 5944 5945 if (random_address_change){ 5946 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5947 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5948 if (hci_extended_advertising_supported()) { 5949 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5950 } 5951 #endif 5952 { 5953 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5954 } 5955 return true; 5956 } 5957 5958 #ifdef ENABLE_LE_CENTRAL 5959 if (hci_stack->le_scanning_param_update){ 5960 hci_stack->le_scanning_param_update = false; 5961 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5962 if (hci_extended_advertising_supported()){ 5963 // prepare arrays for all PHYs 5964 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5965 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5966 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5967 uint8_t scanning_phys = 1; // LE 1M PHY 5968 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5969 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5970 } else 5971 #endif 5972 { 5973 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5974 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5975 } 5976 return true; 5977 } 5978 #endif 5979 5980 #ifdef ENABLE_LE_PERIPHERAL 5981 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5982 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5983 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5984 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5985 if (hci_extended_advertising_supported()){ 5986 // map advertisment type to advertising event properties 5987 uint16_t adv_event_properties = 0; 5988 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 5989 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 5990 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 5991 } 5992 hci_stack->le_advertising_set_in_current_command = 0; 5993 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5994 0, 5995 adv_event_properties, 5996 hci_stack->le_advertisements_interval_min, 5997 hci_stack->le_advertisements_interval_max, 5998 hci_stack->le_advertisements_channel_map, 5999 hci_stack->le_advertisements_own_addr_type, 6000 hci_stack->le_advertisements_direct_address_type, 6001 hci_stack->le_advertisements_direct_address, 6002 hci_stack->le_advertisements_filter_policy, 6003 0x7f, // tx power: no preference 6004 0x01, // primary adv phy: LE 1M 6005 0, // secondary adv max skip 6006 0, // secondary adv phy 6007 0, // adv sid 6008 0 // scan request notification 6009 ); 6010 } 6011 #endif 6012 { 6013 hci_send_cmd(&hci_le_set_advertising_parameters, 6014 hci_stack->le_advertisements_interval_min, 6015 hci_stack->le_advertisements_interval_max, 6016 hci_stack->le_advertisements_type, 6017 hci_stack->le_advertisements_own_addr_type, 6018 hci_stack->le_advertisements_direct_address_type, 6019 hci_stack->le_advertisements_direct_address, 6020 hci_stack->le_advertisements_channel_map, 6021 hci_stack->le_advertisements_filter_policy); 6022 } 6023 return true; 6024 } 6025 6026 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6027 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6028 uint8_t adv_data_clean[31]; 6029 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6030 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6031 hci_stack->le_advertisements_data_len); 6032 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6033 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6034 if (hci_extended_advertising_supported()){ 6035 hci_stack->le_advertising_set_in_current_command = 0; 6036 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6037 } else 6038 #endif 6039 { 6040 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6041 } 6042 return true; 6043 } 6044 6045 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6046 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6047 uint8_t scan_data_clean[31]; 6048 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6049 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6050 hci_stack->le_scan_response_data_len); 6051 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6052 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6053 if (hci_extended_advertising_supported()){ 6054 hci_stack->le_advertising_set_in_current_command = 0; 6055 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6056 } else 6057 #endif 6058 { 6059 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6060 } 6061 return true; 6062 } 6063 6064 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6065 if (hci_extended_advertising_supported()) { 6066 btstack_linked_list_iterator_t it; 6067 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6068 while (btstack_linked_list_iterator_has_next(&it)){ 6069 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6070 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6071 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6072 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6073 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6074 return true; 6075 } 6076 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6077 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6078 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6079 return true; 6080 } 6081 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6082 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6083 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6084 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6085 advertising_set->advertising_handle, 6086 advertising_set->extended_params.advertising_event_properties, 6087 advertising_set->extended_params.primary_advertising_interval_min, 6088 advertising_set->extended_params.primary_advertising_interval_max, 6089 advertising_set->extended_params.primary_advertising_channel_map, 6090 advertising_set->extended_params.own_address_type, 6091 advertising_set->extended_params.peer_address_type, 6092 advertising_set->extended_params.peer_address, 6093 advertising_set->extended_params.advertising_filter_policy, 6094 advertising_set->extended_params.advertising_tx_power, 6095 advertising_set->extended_params.primary_advertising_phy, 6096 advertising_set->extended_params.secondary_advertising_max_skip, 6097 advertising_set->extended_params.secondary_advertising_phy, 6098 advertising_set->extended_params.advertising_sid, 6099 advertising_set->extended_params.scan_request_notification_enable 6100 ); 6101 return true; 6102 } 6103 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6104 uint16_t pos = advertising_set->adv_data_pos; 6105 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6106 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6107 if ((operation & 0x02) != 0){ 6108 // last fragment or complete data 6109 operation |= 2; 6110 advertising_set->adv_data_pos = 0; 6111 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6112 } else { 6113 advertising_set->adv_data_pos += data_to_upload; 6114 } 6115 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6116 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6117 return true; 6118 } 6119 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6120 uint16_t pos = advertising_set->scan_data_pos; 6121 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6122 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6123 if ((operation & 0x02) != 0){ 6124 advertising_set->scan_data_pos = 0; 6125 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6126 } else { 6127 advertising_set->scan_data_pos += data_to_upload; 6128 } 6129 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6130 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x03, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6131 return true; 6132 } 6133 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6134 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6135 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6136 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6137 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6138 advertising_set->advertising_handle, 6139 advertising_set->periodic_params.periodic_advertising_interval_min, 6140 advertising_set->periodic_params.periodic_advertising_interval_max, 6141 advertising_set->periodic_params.periodic_advertising_properties); 6142 return true; 6143 } 6144 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6145 uint16_t pos = advertising_set->periodic_data_pos; 6146 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6147 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6148 if ((operation & 0x02) != 0){ 6149 // last fragment or complete data 6150 operation |= 2; 6151 advertising_set->periodic_data_pos = 0; 6152 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6153 } else { 6154 advertising_set->periodic_data_pos += data_to_upload; 6155 } 6156 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6157 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6158 return true; 6159 } 6160 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6161 } 6162 } 6163 #endif 6164 6165 #endif 6166 6167 #ifdef ENABLE_LE_CENTRAL 6168 // if connect with whitelist was active and is not cancelled yet, wait until next time 6169 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6170 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6171 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6172 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6173 #endif 6174 #endif 6175 6176 // LE Whitelist Management 6177 if (whitelist_modification_pending){ 6178 // add/remove entries 6179 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6180 while (btstack_linked_list_iterator_has_next(&lit)){ 6181 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6182 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6183 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6184 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 6185 return true; 6186 } 6187 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6188 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6189 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6190 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6191 return true; 6192 } 6193 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 6194 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6195 btstack_memory_whitelist_entry_free(entry); 6196 } 6197 } 6198 } 6199 6200 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6201 // LE Resolving List Management 6202 if (resolving_list_supported) { 6203 uint16_t i; 6204 switch (hci_stack->le_resolving_list_state) { 6205 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6206 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6207 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6208 return true; 6209 case LE_RESOLVING_LIST_READ_SIZE: 6210 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6211 hci_send_cmd(&hci_le_read_resolving_list_size); 6212 return true; 6213 case LE_RESOLVING_LIST_SEND_CLEAR: 6214 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6215 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6216 sizeof(hci_stack->le_resolving_list_add_entries)); 6217 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6218 sizeof(hci_stack->le_resolving_list_remove_entries)); 6219 hci_send_cmd(&hci_le_clear_resolving_list); 6220 return true; 6221 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6222 // first remove old entries 6223 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6224 uint8_t offset = i >> 3; 6225 uint8_t mask = 1 << (i & 7); 6226 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6227 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6228 bd_addr_t peer_identity_addreses; 6229 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6230 sm_key_t peer_irk; 6231 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6232 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6233 6234 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6235 // trigger whitelist entry 'update' (work around for controller bug) 6236 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6237 while (btstack_linked_list_iterator_has_next(&lit)) { 6238 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6239 if (entry->address_type != peer_identity_addr_type) continue; 6240 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6241 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6242 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6243 } 6244 #endif 6245 6246 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6247 peer_identity_addreses); 6248 return true; 6249 } 6250 6251 // then add new entries 6252 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6253 uint8_t offset = i >> 3; 6254 uint8_t mask = 1 << (i & 7); 6255 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6256 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6257 bd_addr_t peer_identity_addreses; 6258 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6259 sm_key_t peer_irk; 6260 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6261 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6262 if (btstack_is_null(peer_irk, 16)) continue; 6263 const uint8_t *local_irk = gap_get_persistent_irk(); 6264 // command uses format specifier 'P' that stores 16-byte value without flip 6265 uint8_t local_irk_flipped[16]; 6266 uint8_t peer_irk_flipped[16]; 6267 reverse_128(local_irk, local_irk_flipped); 6268 reverse_128(peer_irk, peer_irk_flipped); 6269 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6270 peer_irk_flipped, local_irk_flipped); 6271 return true; 6272 } 6273 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6274 break; 6275 6276 default: 6277 break; 6278 } 6279 } 6280 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6281 #endif 6282 6283 #ifdef ENABLE_LE_CENTRAL 6284 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6285 // LE Whitelist Management 6286 if (periodic_list_modification_pending){ 6287 // add/remove entries 6288 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6289 while (btstack_linked_list_iterator_has_next(&lit)){ 6290 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6291 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6292 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6293 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6294 return true; 6295 } 6296 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6297 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6298 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6299 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6300 return true; 6301 } 6302 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6303 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6304 btstack_memory_periodic_advertiser_list_entry_free(entry); 6305 } 6306 } 6307 } 6308 #endif 6309 #endif 6310 6311 #ifdef ENABLE_LE_CENTRAL 6312 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6313 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6314 if (hci_stack->le_past_set_default_params){ 6315 hci_stack->le_past_set_default_params = false; 6316 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6317 hci_stack->le_past_mode, 6318 hci_stack->le_past_skip, 6319 hci_stack->le_past_sync_timeout, 6320 hci_stack->le_past_cte_type); 6321 return true; 6322 } 6323 #endif 6324 #endif 6325 #endif 6326 6327 // post-pone all actions until stack is fully working 6328 if (hci_stack->state != HCI_STATE_WORKING) return false; 6329 6330 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6331 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6332 6333 // Phase 4: restore state 6334 6335 #ifdef ENABLE_LE_CENTRAL 6336 // re-start scanning 6337 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6338 hci_stack->le_scanning_active = true; 6339 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6340 if (hci_extended_advertising_supported()){ 6341 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6342 } else 6343 #endif 6344 { 6345 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6346 } 6347 return true; 6348 } 6349 #endif 6350 6351 #ifdef ENABLE_LE_CENTRAL 6352 // re-start connecting 6353 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6354 bd_addr_t null_addr; 6355 memset(null_addr, 0, 6); 6356 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6357 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6358 hci_send_le_create_connection(1, 0, null_addr); 6359 return true; 6360 } 6361 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6362 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6363 switch(hci_stack->le_periodic_sync_request){ 6364 case LE_CONNECTING_DIRECT: 6365 case LE_CONNECTING_WHITELIST: 6366 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6367 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6368 hci_stack->le_periodic_sync_options, 6369 hci_stack->le_periodic_sync_advertising_sid, 6370 hci_stack->le_periodic_sync_advertiser_address_type, 6371 hci_stack->le_periodic_sync_advertiser_address, 6372 hci_stack->le_periodic_sync_skip, 6373 hci_stack->le_periodic_sync_timeout, 6374 hci_stack->le_periodic_sync_cte_type); 6375 return true; 6376 default: 6377 break; 6378 } 6379 } 6380 #endif 6381 #endif 6382 6383 #ifdef ENABLE_LE_PERIPHERAL 6384 // re-start advertising 6385 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6386 // check if advertisements should be enabled given 6387 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6388 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6389 6390 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6391 if (hci_extended_advertising_supported()){ 6392 const uint8_t advertising_handles[] = { 0 }; 6393 const uint16_t durations[] = { 0 }; 6394 const uint16_t max_events[] = { 0 }; 6395 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6396 } else 6397 #endif 6398 { 6399 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6400 } 6401 return true; 6402 } 6403 6404 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6405 if (hci_extended_advertising_supported()) { 6406 btstack_linked_list_iterator_t it; 6407 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6408 while (btstack_linked_list_iterator_has_next(&it)) { 6409 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6410 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6411 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6412 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6413 const uint16_t durations[] = { advertising_set->enable_timeout }; 6414 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6415 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6416 return true; 6417 } 6418 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6419 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6420 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6421 uint8_t enable = 1; 6422 if (advertising_set->periodic_include_adi){ 6423 enable |= 2; 6424 } 6425 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6426 return true; 6427 } 6428 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6429 } 6430 } 6431 #endif 6432 #endif 6433 6434 return false; 6435 } 6436 6437 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6438 static bool hci_run_iso_tasks(void){ 6439 btstack_linked_list_iterator_t it; 6440 6441 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6442 return false; 6443 } 6444 6445 // BIG 6446 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6447 while (btstack_linked_list_iterator_has_next(&it)){ 6448 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6449 switch (big->state){ 6450 case LE_AUDIO_BIG_STATE_CREATE: 6451 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6452 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6453 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6454 hci_send_cmd(&hci_le_create_big, 6455 big->params->big_handle, 6456 big->params->advertising_handle, 6457 big->params->num_bis, 6458 big->params->sdu_interval_us, 6459 big->params->max_sdu, 6460 big->params->max_transport_latency_ms, 6461 big->params->rtn, 6462 big->params->phy, 6463 big->params->packing, 6464 big->params->framing, 6465 big->params->encryption, 6466 big->params->broadcast_code); 6467 return true; 6468 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6469 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6470 hci_send_cmd(&hci_le_setup_iso_data_path, big->bis_con_handles[big->state_vars.next_bis], 0, 0, 0, 0, 0, 0, 0, NULL); 6471 return true; 6472 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6473 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6474 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6475 return true; 6476 case LE_AUDIO_BIG_STATE_TERMINATE: 6477 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6478 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6479 return true; 6480 default: 6481 break; 6482 } 6483 } 6484 6485 // BIG Sync 6486 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6487 while (btstack_linked_list_iterator_has_next(&it)){ 6488 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6489 switch (big_sync->state){ 6490 case LE_AUDIO_BIG_STATE_CREATE: 6491 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6492 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6493 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6494 hci_send_cmd(&hci_le_big_create_sync, 6495 big_sync->params->big_handle, 6496 big_sync->params->sync_handle, 6497 big_sync->params->encryption, 6498 big_sync->params->broadcast_code, 6499 big_sync->params->mse, 6500 big_sync->params->big_sync_timeout_10ms, 6501 big_sync->params->num_bis, 6502 big_sync->params->bis_indices); 6503 return true; 6504 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6505 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6506 hci_send_cmd(&hci_le_setup_iso_data_path, big_sync->bis_con_handles[big_sync->state_vars.next_bis], 1, 0, 0, 0, 0, 0, 0, NULL); 6507 return true; 6508 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6509 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6510 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6511 return true; 6512 case LE_AUDIO_BIG_STATE_TERMINATE: 6513 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6514 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6515 return true; 6516 default: 6517 break; 6518 } 6519 } 6520 6521 // CIG 6522 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6523 while (btstack_linked_list_iterator_has_next(&it)) { 6524 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6525 uint8_t i; 6526 // Set CIG Parameters 6527 uint8_t cis_id[MAX_NR_CIS]; 6528 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6529 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6530 uint8_t phy_c_to_p[MAX_NR_CIS]; 6531 uint8_t phy_p_to_c[MAX_NR_CIS]; 6532 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6533 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6534 switch (cig->state) { 6535 case LE_AUDIO_CIG_STATE_CREATE: 6536 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6537 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6538 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6539 le_audio_cig_params_t * params = cig->params; 6540 for (i = 0; i < params->num_cis; i++) { 6541 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6542 cis_id[i] = cis_params->cis_id; 6543 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6544 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6545 phy_c_to_p[i] = cis_params->phy_c_to_p; 6546 phy_p_to_c[i] = cis_params->phy_p_to_c; 6547 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6548 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6549 } 6550 hci_send_cmd(&hci_le_set_cig_parameters, 6551 cig->cig_id, 6552 params->sdu_interval_c_to_p, 6553 params->sdu_interval_p_to_c, 6554 params->worst_case_sca, 6555 params->packing, 6556 params->framing, 6557 params->max_transport_latency_c_to_p, 6558 params->max_transport_latency_p_to_c, 6559 params->num_cis, 6560 cis_id, 6561 max_sdu_c_to_p, 6562 max_sdu_p_to_c, 6563 phy_c_to_p, 6564 phy_p_to_c, 6565 rtn_c_to_p, 6566 rtn_p_to_c 6567 ); 6568 return true; 6569 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6570 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6571 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6572 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6573 for (i=0;i<cig->num_cis;i++){ 6574 cig->cis_setup_active[i] = true; 6575 } 6576 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6577 return true; 6578 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6579 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6580 // find next path to setup 6581 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6582 if (cig->cis_established[cis_index] == false) { 6583 continue; 6584 } 6585 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6586 bool setup = true; 6587 if (cis_direction == 0){ 6588 // 0 - input - host to controller 6589 // we are central => central to peripheral 6590 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6591 } else { 6592 // 1 - output - controller to host 6593 // we are central => peripheral to central 6594 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6595 } 6596 if (setup){ 6597 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6598 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6599 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6600 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, 0, 0, 0, 0, 0, NULL); 6601 return true; 6602 } 6603 cig->state_vars.next_cis++; 6604 } 6605 // emit done 6606 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6607 default: 6608 break; 6609 } 6610 } 6611 6612 // CIS Accept/Reject 6613 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6614 while (btstack_linked_list_iterator_has_next(&it)) { 6615 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6616 hci_con_handle_t con_handle; 6617 switch (iso_stream->state){ 6618 case HCI_ISO_STREAM_W2_ACCEPT: 6619 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6620 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6621 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6622 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->con_handle); 6623 return true; 6624 case HCI_ISO_STREAM_W2_REJECT: 6625 con_handle = iso_stream->con_handle; 6626 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6627 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6628 hci_iso_stream_finalize(iso_stream); 6629 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6630 return true; 6631 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6632 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6633 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6634 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6635 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->con_handle, 0, 0, 0, 0, 0, 0, 0, NULL); 6636 break; 6637 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6638 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6639 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6640 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6641 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->con_handle, 1, 0, 0, 0, 0, 0, 0, NULL); 6642 break; 6643 default: 6644 break; 6645 } 6646 } 6647 6648 return false; 6649 } 6650 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6651 #endif 6652 6653 static bool hci_run_general_pending_commands(void){ 6654 btstack_linked_item_t * it; 6655 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6656 hci_connection_t * connection = (hci_connection_t *) it; 6657 6658 switch(connection->state){ 6659 case SEND_CREATE_CONNECTION: 6660 switch(connection->address_type){ 6661 #ifdef ENABLE_CLASSIC 6662 case BD_ADDR_TYPE_ACL: 6663 log_info("sending hci_create_connection"); 6664 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6665 break; 6666 #endif 6667 default: 6668 #ifdef ENABLE_BLE 6669 #ifdef ENABLE_LE_CENTRAL 6670 log_info("sending hci_le_create_connection"); 6671 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6672 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6673 hci_send_le_create_connection(0, connection->address_type, connection->address); 6674 connection->state = SENT_CREATE_CONNECTION; 6675 #endif 6676 #endif 6677 break; 6678 } 6679 return true; 6680 6681 #ifdef ENABLE_CLASSIC 6682 case RECEIVED_CONNECTION_REQUEST: 6683 connection->role = HCI_ROLE_SLAVE; 6684 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6685 log_info("sending hci_accept_connection_request"); 6686 connection->state = ACCEPTED_CONNECTION_REQUEST; 6687 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6688 return true; 6689 } 6690 break; 6691 #endif 6692 case SEND_DISCONNECT: 6693 connection->state = SENT_DISCONNECT; 6694 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6695 return true; 6696 6697 default: 6698 break; 6699 } 6700 6701 // no further commands if connection is about to get shut down 6702 if (connection->state == SENT_DISCONNECT) continue; 6703 6704 #ifdef ENABLE_CLASSIC 6705 6706 // Handling link key request requires remote supported features 6707 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6708 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6709 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6710 6711 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6712 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6713 if (have_link_key && security_level_sufficient){ 6714 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6715 } else { 6716 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6717 } 6718 return true; 6719 } 6720 6721 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6722 log_info("denying to pin request"); 6723 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6724 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6725 return true; 6726 } 6727 6728 // security assessment requires remote features 6729 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6730 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6731 hci_ssp_assess_security_on_io_cap_request(connection); 6732 // 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 6733 } 6734 6735 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6736 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6737 // set authentication requirements: 6738 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6739 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6740 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6741 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6742 authreq |= 1; 6743 } 6744 bool bonding = hci_stack->bondable; 6745 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6746 // if we have received IO Cap Response, we're in responder role 6747 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6748 if (bonding && !remote_bonding){ 6749 log_info("Remote not bonding, dropping local flag"); 6750 bonding = false; 6751 } 6752 } 6753 if (bonding){ 6754 if (connection->bonding_flags & BONDING_DEDICATED){ 6755 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6756 } else { 6757 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6758 } 6759 } 6760 uint8_t have_oob_data = 0; 6761 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6762 if (connection->classic_oob_c_192 != NULL){ 6763 have_oob_data |= 1; 6764 } 6765 if (connection->classic_oob_c_256 != NULL){ 6766 have_oob_data |= 2; 6767 } 6768 #endif 6769 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6770 return true; 6771 } 6772 6773 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6774 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6775 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6776 return true; 6777 } 6778 6779 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6780 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6781 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6782 const uint8_t zero[16] = { 0 }; 6783 const uint8_t * r_192 = zero; 6784 const uint8_t * c_192 = zero; 6785 const uint8_t * r_256 = zero; 6786 const uint8_t * c_256 = zero; 6787 // verify P-256 OOB 6788 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6789 c_256 = connection->classic_oob_c_256; 6790 if (connection->classic_oob_r_256 != NULL) { 6791 r_256 = connection->classic_oob_r_256; 6792 } 6793 } 6794 // verify P-192 OOB 6795 if ((connection->classic_oob_c_192 != NULL)) { 6796 c_192 = connection->classic_oob_c_192; 6797 if (connection->classic_oob_r_192 != NULL) { 6798 r_192 = connection->classic_oob_r_192; 6799 } 6800 } 6801 6802 // assess security 6803 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6804 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6805 if (need_level_4 && !can_reach_level_4){ 6806 log_info("Level 4 required, but not possible -> abort"); 6807 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6808 // send oob negative reply 6809 c_256 = NULL; 6810 c_192 = NULL; 6811 } 6812 6813 // Reply 6814 if (c_256 != zero) { 6815 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6816 } else if (c_192 != zero){ 6817 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6818 } else { 6819 hci_stack->classic_oob_con_handle = connection->con_handle; 6820 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6821 } 6822 return true; 6823 } 6824 #endif 6825 6826 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6827 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6828 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6829 return true; 6830 } 6831 6832 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6833 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6834 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6835 return true; 6836 } 6837 6838 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6839 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6840 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6841 return true; 6842 } 6843 6844 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6845 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6846 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6847 connection->state = SENT_DISCONNECT; 6848 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6849 return true; 6850 } 6851 6852 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6853 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6854 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6855 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6856 return true; 6857 } 6858 6859 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6860 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6861 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6862 return true; 6863 } 6864 6865 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 6866 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 6867 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 6868 return true; 6869 } 6870 6871 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 6872 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6873 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 6874 return true; 6875 } 6876 6877 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 6878 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 6879 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 6880 return true; 6881 } 6882 6883 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 6884 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 6885 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 6886 return true; 6887 } 6888 #endif 6889 6890 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 6891 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 6892 #ifdef ENABLE_CLASSIC 6893 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 6894 #endif 6895 if (connection->state != SENT_DISCONNECT){ 6896 connection->state = SENT_DISCONNECT; 6897 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 6898 return true; 6899 } 6900 } 6901 6902 #ifdef ENABLE_CLASSIC 6903 uint16_t sniff_min_interval; 6904 switch (connection->sniff_min_interval){ 6905 case 0: 6906 break; 6907 case 0xffff: 6908 connection->sniff_min_interval = 0; 6909 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 6910 return true; 6911 default: 6912 sniff_min_interval = connection->sniff_min_interval; 6913 connection->sniff_min_interval = 0; 6914 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 6915 return true; 6916 } 6917 6918 if (connection->sniff_subrating_max_latency != 0xffff){ 6919 uint16_t max_latency = connection->sniff_subrating_max_latency; 6920 connection->sniff_subrating_max_latency = 0; 6921 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 6922 return true; 6923 } 6924 6925 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 6926 uint8_t service_type = (uint8_t) connection->qos_service_type; 6927 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 6928 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); 6929 return true; 6930 } 6931 6932 if (connection->request_role != HCI_ROLE_INVALID){ 6933 hci_role_t role = connection->request_role; 6934 connection->request_role = HCI_ROLE_INVALID; 6935 hci_send_cmd(&hci_switch_role_command, connection->address, role); 6936 return true; 6937 } 6938 #endif 6939 6940 if (connection->gap_connection_tasks != 0){ 6941 #ifdef ENABLE_CLASSIC 6942 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6943 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6944 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6945 return true; 6946 } 6947 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6948 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6949 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6950 return true; 6951 } 6952 #endif 6953 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6954 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6955 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6956 return true; 6957 } 6958 #ifdef ENABLE_BLE 6959 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 6960 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 6961 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 6962 return true; 6963 } 6964 #endif 6965 } 6966 6967 #ifdef ENABLE_BLE 6968 switch (connection->le_con_parameter_update_state){ 6969 // response to L2CAP CON PARAMETER UPDATE REQUEST 6970 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 6971 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6972 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 6973 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6974 0x0000, 0xffff); 6975 return true; 6976 case CON_PARAMETER_UPDATE_REPLY: 6977 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6978 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 6979 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6980 0x0000, 0xffff); 6981 return true; 6982 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 6983 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6984 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 6985 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 6986 return true; 6987 default: 6988 break; 6989 } 6990 if (connection->le_phy_update_all_phys != 0xffu){ 6991 uint8_t all_phys = connection->le_phy_update_all_phys; 6992 connection->le_phy_update_all_phys = 0xff; 6993 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); 6994 return true; 6995 } 6996 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6997 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 6998 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 6999 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7000 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7001 return true; 7002 } 7003 #endif 7004 #endif 7005 } 7006 return false; 7007 } 7008 7009 static void hci_run(void){ 7010 7011 // stack state sub statemachines 7012 switch (hci_stack->state) { 7013 case HCI_STATE_INITIALIZING: 7014 hci_initializing_run(); 7015 break; 7016 case HCI_STATE_HALTING: 7017 hci_halting_run(); 7018 break; 7019 case HCI_STATE_FALLING_ASLEEP: 7020 hci_falling_asleep_run(); 7021 break; 7022 default: 7023 break; 7024 } 7025 7026 // allow to run after initialization to working transition 7027 if (hci_stack->state != HCI_STATE_WORKING){ 7028 return; 7029 } 7030 7031 bool done; 7032 7033 // send continuation fragments first, as they block the prepared packet buffer 7034 done = hci_run_acl_fragments(); 7035 if (done) return; 7036 7037 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7038 done = hci_run_iso_fragments(); 7039 if (done) return; 7040 #endif 7041 7042 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7043 // send host num completed packets next as they don't require num_cmd_packets > 0 7044 if (!hci_can_send_comand_packet_transport()) return; 7045 if (hci_stack->host_completed_packets){ 7046 hci_host_num_completed_packets(); 7047 return; 7048 } 7049 #endif 7050 7051 if (!hci_can_send_command_packet_now()) return; 7052 7053 // global/non-connection oriented commands 7054 7055 7056 #ifdef ENABLE_CLASSIC 7057 // general gap classic 7058 done = hci_run_general_gap_classic(); 7059 if (done) return; 7060 #endif 7061 7062 #ifdef ENABLE_BLE 7063 // general gap le 7064 done = hci_run_general_gap_le(); 7065 if (done) return; 7066 7067 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7068 // ISO related tasks, e.g. BIG create/terminate/sync 7069 done = hci_run_iso_tasks(); 7070 if (done) return; 7071 #endif 7072 #endif 7073 7074 // send pending HCI commands 7075 hci_run_general_pending_commands(); 7076 } 7077 7078 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7079 // house-keeping 7080 7081 #ifdef ENABLE_CLASSIC 7082 bd_addr_t addr; 7083 hci_connection_t * conn; 7084 #endif 7085 #ifdef ENABLE_LE_CENTRAL 7086 uint8_t initiator_filter_policy; 7087 #endif 7088 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7089 uint8_t i; 7090 uint8_t num_cis; 7091 hci_con_handle_t cis_handle; 7092 uint8_t status; 7093 #endif 7094 7095 uint16_t opcode = little_endian_read_16(packet, 0); 7096 switch (opcode) { 7097 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7098 hci_stack->loopback_mode = packet[3]; 7099 break; 7100 7101 #ifdef ENABLE_CLASSIC 7102 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7103 reverse_bd_addr(&packet[3], addr); 7104 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7105 7106 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7107 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7108 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7109 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7110 } 7111 7112 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7113 if (!conn) { 7114 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7115 if (!conn) { 7116 // notify client that alloc failed 7117 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7118 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7119 } 7120 conn->state = SEND_CREATE_CONNECTION; 7121 conn->role = HCI_ROLE_MASTER; 7122 } 7123 7124 log_info("conn state %u", conn->state); 7125 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7126 switch (conn->state) { 7127 // if connection active exists 7128 case OPEN: 7129 // and OPEN, emit connection complete command 7130 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7131 // packet not sent to controller 7132 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7133 case RECEIVED_DISCONNECTION_COMPLETE: 7134 // create connection triggered in disconnect complete event, let's do it now 7135 break; 7136 case SEND_CREATE_CONNECTION: 7137 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7138 if (hci_classic_operation_active()){ 7139 return ERROR_CODE_SUCCESS; 7140 } 7141 #endif 7142 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7143 break; 7144 default: 7145 // otherwise, just ignore as it is already in the open process 7146 // packet not sent to controller 7147 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7148 } 7149 conn->state = SENT_CREATE_CONNECTION; 7150 7151 // track outgoing connection 7152 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7153 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7154 break; 7155 7156 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 7157 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7158 // setup_synchronous_connection? Voice setting at offset 22 7159 // TODO: compare to current setting if sco connection already active 7160 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7161 break; 7162 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7163 // accept_synchronous_connection? Voice setting at offset 18 7164 // TODO: compare to current setting if sco connection already active 7165 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7166 // track outgoing connection 7167 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7168 reverse_bd_addr(&packet[3], hci_stack->outgoing_addr); 7169 break; 7170 #endif 7171 #endif 7172 7173 #ifdef ENABLE_BLE 7174 #ifdef ENABLE_LE_CENTRAL 7175 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7176 // white list used? 7177 initiator_filter_policy = packet[7]; 7178 switch (initiator_filter_policy) { 7179 case 0: 7180 // whitelist not used 7181 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7182 break; 7183 case 1: 7184 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7185 break; 7186 default: 7187 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7188 break; 7189 } 7190 // track outgoing connection 7191 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7192 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7193 break; 7194 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7195 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7196 // white list used? 7197 initiator_filter_policy = packet[3]; 7198 switch (initiator_filter_policy) { 7199 case 0: 7200 // whitelist not used 7201 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7202 break; 7203 case 1: 7204 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7205 break; 7206 default: 7207 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7208 break; 7209 } 7210 // track outgoing connection 7211 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7212 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7213 break; 7214 #endif 7215 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7216 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7217 break; 7218 #endif 7219 #endif /* ENABLE_BLE */ 7220 default: 7221 break; 7222 } 7223 7224 hci_stack->num_cmd_packets--; 7225 7226 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7227 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7228 if (err != 0){ 7229 return ERROR_CODE_HARDWARE_FAILURE; 7230 } 7231 return ERROR_CODE_SUCCESS; 7232 } 7233 7234 // disconnect because of security block 7235 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7236 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7237 if (!connection) return; 7238 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7239 } 7240 7241 7242 // Configure Secure Simple Pairing 7243 7244 #ifdef ENABLE_CLASSIC 7245 7246 // enable will enable SSP during init 7247 void gap_ssp_set_enable(int enable){ 7248 hci_stack->ssp_enable = enable; 7249 } 7250 7251 static int hci_local_ssp_activated(void){ 7252 return gap_ssp_supported() && hci_stack->ssp_enable; 7253 } 7254 7255 // if set, BTstack will respond to io capability request using authentication requirement 7256 void gap_ssp_set_io_capability(int io_capability){ 7257 hci_stack->ssp_io_capability = io_capability; 7258 } 7259 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7260 hci_stack->ssp_authentication_requirement = authentication_requirement; 7261 } 7262 7263 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7264 void gap_ssp_set_auto_accept(int auto_accept){ 7265 hci_stack->ssp_auto_accept = auto_accept; 7266 } 7267 7268 void gap_secure_connections_enable(bool enable){ 7269 hci_stack->secure_connections_enable = enable; 7270 } 7271 bool gap_secure_connections_active(void){ 7272 return hci_stack->secure_connections_active; 7273 } 7274 7275 #endif 7276 7277 // va_list part of hci_send_cmd 7278 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7279 if (!hci_can_send_command_packet_now()){ 7280 log_error("hci_send_cmd called but cannot send packet now"); 7281 return ERROR_CODE_COMMAND_DISALLOWED; 7282 } 7283 7284 // for HCI INITIALIZATION 7285 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7286 hci_stack->last_cmd_opcode = cmd->opcode; 7287 7288 hci_reserve_packet_buffer(); 7289 uint8_t * packet = hci_stack->hci_packet_buffer; 7290 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7291 uint8_t status = hci_send_cmd_packet(packet, size); 7292 7293 // release packet buffer on error or for synchronous transport implementations 7294 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7295 hci_release_packet_buffer(); 7296 hci_emit_transport_packet_sent(); 7297 } 7298 7299 return status; 7300 } 7301 7302 /** 7303 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7304 */ 7305 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7306 va_list argptr; 7307 va_start(argptr, cmd); 7308 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7309 va_end(argptr); 7310 return status; 7311 } 7312 7313 // Create various non-HCI events. 7314 // TODO: generalize, use table similar to hci_create_command 7315 7316 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7317 // dump packet 7318 if (dump) { 7319 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7320 } 7321 7322 // dispatch to all event handlers 7323 btstack_linked_list_iterator_t it; 7324 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7325 while (btstack_linked_list_iterator_has_next(&it)){ 7326 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7327 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7328 } 7329 } 7330 7331 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7332 if (!hci_stack->acl_packet_handler) return; 7333 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7334 } 7335 7336 #ifdef ENABLE_CLASSIC 7337 static void hci_notify_if_sco_can_send_now(void){ 7338 // notify SCO sender if waiting 7339 if (!hci_stack->sco_waiting_for_can_send_now) return; 7340 if (hci_can_send_sco_packet_now()){ 7341 hci_stack->sco_waiting_for_can_send_now = 0; 7342 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7343 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7344 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7345 } 7346 } 7347 7348 // parsing end emitting has been merged to reduce code size 7349 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7350 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7351 7352 uint8_t * eir_data; 7353 ad_context_t context; 7354 const uint8_t * name; 7355 uint8_t name_len; 7356 7357 if (size < 3) return; 7358 7359 int event_type = hci_event_packet_get_type(packet); 7360 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7361 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7362 7363 switch (event_type){ 7364 case HCI_EVENT_INQUIRY_RESULT: 7365 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7366 if (size != (3 + (num_responses * 14))) return; 7367 break; 7368 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7369 if (size != 257) return; 7370 if (num_responses != 1) return; 7371 break; 7372 default: 7373 return; 7374 } 7375 7376 // event[1] is set at the end 7377 int i; 7378 for (i=0; i<num_responses;i++){ 7379 memset(event, 0, sizeof(event)); 7380 event[0] = GAP_EVENT_INQUIRY_RESULT; 7381 uint8_t event_size = 27; // if name is not set by EIR 7382 7383 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7384 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7385 (void)memcpy(&event[9], 7386 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7387 3); // class of device 7388 (void)memcpy(&event[12], 7389 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7390 2); // clock offset 7391 7392 switch (event_type){ 7393 case HCI_EVENT_INQUIRY_RESULT: 7394 // 14,15,16,17 = 0, size 18 7395 break; 7396 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7397 event[14] = 1; 7398 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7399 // 16,17 = 0, size 18 7400 break; 7401 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7402 event[14] = 1; 7403 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7404 // EIR packets only contain a single inquiry response 7405 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7406 name = NULL; 7407 // Iterate over EIR data 7408 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7409 uint8_t data_type = ad_iterator_get_data_type(&context); 7410 uint8_t data_size = ad_iterator_get_data_len(&context); 7411 const uint8_t * data = ad_iterator_get_data(&context); 7412 // Prefer Complete Local Name over Shortened Local Name 7413 switch (data_type){ 7414 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7415 if (name) continue; 7416 /* fall through */ 7417 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7418 name = data; 7419 name_len = data_size; 7420 break; 7421 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7422 if (data_size != 8) break; 7423 event[16] = 1; 7424 memcpy(&event[17], data, 8); 7425 break; 7426 default: 7427 break; 7428 } 7429 } 7430 if (name){ 7431 event[25] = 1; 7432 // truncate name if needed 7433 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7434 event[26] = len; 7435 (void)memcpy(&event[27], name, len); 7436 event_size += len; 7437 } 7438 break; 7439 default: 7440 return; 7441 } 7442 event[1] = event_size - 2; 7443 hci_emit_event(event, event_size, 1); 7444 } 7445 } 7446 #endif 7447 7448 void hci_emit_state(void){ 7449 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7450 uint8_t event[3]; 7451 event[0] = BTSTACK_EVENT_STATE; 7452 event[1] = sizeof(event) - 2u; 7453 event[2] = hci_stack->state; 7454 hci_emit_event(event, sizeof(event), 1); 7455 } 7456 7457 #ifdef ENABLE_CLASSIC 7458 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7459 uint8_t event[13]; 7460 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7461 event[1] = sizeof(event) - 2; 7462 event[2] = status; 7463 little_endian_store_16(event, 3, con_handle); 7464 reverse_bd_addr(address, &event[5]); 7465 event[11] = 1; // ACL connection 7466 event[12] = 0; // encryption disabled 7467 hci_emit_event(event, sizeof(event), 1); 7468 } 7469 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7470 if (disable_l2cap_timeouts) return; 7471 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7472 uint8_t event[4]; 7473 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7474 event[1] = sizeof(event) - 2; 7475 little_endian_store_16(event, 2, conn->con_handle); 7476 hci_emit_event(event, sizeof(event), 1); 7477 } 7478 #endif 7479 7480 #ifdef ENABLE_BLE 7481 #ifdef ENABLE_LE_CENTRAL 7482 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){ 7483 uint8_t event[21]; 7484 event[0] = HCI_EVENT_LE_META; 7485 event[1] = sizeof(event) - 2u; 7486 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7487 event[3] = status; 7488 little_endian_store_16(event, 4, con_handle); 7489 event[6] = 0; // TODO: role 7490 event[7] = address_type; 7491 reverse_bd_addr(address, &event[8]); 7492 little_endian_store_16(event, 14, 0); // interval 7493 little_endian_store_16(event, 16, 0); // latency 7494 little_endian_store_16(event, 18, 0); // supervision timeout 7495 event[20] = 0; // master clock accuracy 7496 hci_emit_event(event, sizeof(event), 1); 7497 } 7498 #endif 7499 #endif 7500 7501 static void hci_emit_transport_packet_sent(void){ 7502 // notify upper stack that it might be possible to send again 7503 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7504 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7505 } 7506 7507 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7508 uint8_t event[6]; 7509 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7510 event[1] = sizeof(event) - 2u; 7511 event[2] = 0; // status = OK 7512 little_endian_store_16(event, 3, con_handle); 7513 event[5] = reason; 7514 hci_emit_event(event, sizeof(event), 1); 7515 } 7516 7517 static void hci_emit_nr_connections_changed(void){ 7518 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7519 uint8_t event[3]; 7520 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7521 event[1] = sizeof(event) - 2u; 7522 event[2] = nr_hci_connections(); 7523 hci_emit_event(event, sizeof(event), 1); 7524 } 7525 7526 static void hci_emit_hci_open_failed(void){ 7527 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7528 uint8_t event[2]; 7529 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7530 event[1] = sizeof(event) - 2u; 7531 hci_emit_event(event, sizeof(event), 1); 7532 } 7533 7534 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7535 log_info("hci_emit_dedicated_bonding_result %u ", status); 7536 uint8_t event[9]; 7537 int pos = 0; 7538 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7539 event[pos++] = sizeof(event) - 2u; 7540 event[pos++] = status; 7541 reverse_bd_addr(address, &event[pos]); 7542 hci_emit_event(event, sizeof(event), 1); 7543 } 7544 7545 7546 #ifdef ENABLE_CLASSIC 7547 7548 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7549 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7550 uint8_t event[5]; 7551 int pos = 0; 7552 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7553 event[pos++] = sizeof(event) - 2; 7554 little_endian_store_16(event, 2, con_handle); 7555 pos += 2; 7556 event[pos++] = level; 7557 hci_emit_event(event, sizeof(event), 1); 7558 } 7559 7560 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7561 if (!connection) return LEVEL_0; 7562 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7563 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7564 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7565 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7566 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7567 // LEVEL 4 always requires 128 bit encrytion key size 7568 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7569 security_level = LEVEL_3; 7570 } 7571 return security_level; 7572 } 7573 7574 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7575 uint8_t event[4]; 7576 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7577 event[1] = sizeof(event) - 2; 7578 event[2] = discoverable; 7579 event[3] = connectable; 7580 hci_emit_event(event, sizeof(event), 1); 7581 } 7582 7583 // query if remote side supports eSCO 7584 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7585 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7586 if (!connection) return false; 7587 return (connection->remote_supported_features[0] & 1) != 0; 7588 } 7589 7590 static bool hci_ssp_supported(hci_connection_t * connection){ 7591 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7592 return (connection->bonding_flags & mask) == mask; 7593 } 7594 7595 // query if remote side supports SSP 7596 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7597 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7598 if (!connection) return false; 7599 return hci_ssp_supported(connection) ? 1 : 0; 7600 } 7601 7602 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7603 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7604 } 7605 7606 /** 7607 * Check if remote supported features query has completed 7608 */ 7609 bool hci_remote_features_available(hci_con_handle_t handle){ 7610 hci_connection_t * connection = hci_connection_for_handle(handle); 7611 if (!connection) return false; 7612 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7613 } 7614 7615 /** 7616 * Trigger remote supported features query 7617 */ 7618 7619 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7620 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7621 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7622 } 7623 } 7624 7625 void hci_remote_features_query(hci_con_handle_t con_handle){ 7626 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7627 if (!connection) return; 7628 hci_trigger_remote_features_for_connection(connection); 7629 hci_run(); 7630 } 7631 7632 // GAP API 7633 /** 7634 * @bbrief enable/disable bonding. default is enabled 7635 * @praram enabled 7636 */ 7637 void gap_set_bondable_mode(int enable){ 7638 hci_stack->bondable = enable ? 1 : 0; 7639 } 7640 /** 7641 * @brief Get bondable mode. 7642 * @return 1 if bondable 7643 */ 7644 int gap_get_bondable_mode(void){ 7645 return hci_stack->bondable; 7646 } 7647 7648 /** 7649 * @brief map link keys to security levels 7650 */ 7651 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7652 switch (link_key_type){ 7653 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7654 return LEVEL_4; 7655 case COMBINATION_KEY: 7656 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7657 return LEVEL_3; 7658 default: 7659 return LEVEL_2; 7660 } 7661 } 7662 7663 /** 7664 * @brief map link keys to secure connection yes/no 7665 */ 7666 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7667 switch (link_key_type){ 7668 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7669 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7670 return true; 7671 default: 7672 return false; 7673 } 7674 } 7675 7676 /** 7677 * @brief map link keys to authenticated 7678 */ 7679 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7680 switch (link_key_type){ 7681 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7682 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7683 return true; 7684 default: 7685 return false; 7686 } 7687 } 7688 7689 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7690 log_info("gap_mitm_protection_required_for_security_level %u", level); 7691 return level > LEVEL_2; 7692 } 7693 7694 /** 7695 * @brief get current security level 7696 */ 7697 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7698 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7699 if (!connection) return LEVEL_0; 7700 return gap_security_level_for_connection(connection); 7701 } 7702 7703 /** 7704 * @brief request connection to device to 7705 * @result GAP_AUTHENTICATION_RESULT 7706 */ 7707 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7708 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7709 if (!connection){ 7710 hci_emit_security_level(con_handle, LEVEL_0); 7711 return; 7712 } 7713 7714 btstack_assert(hci_is_le_connection(connection) == false); 7715 7716 // 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) 7717 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7718 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7719 requested_level = LEVEL_4; 7720 } 7721 7722 gap_security_level_t current_level = gap_security_level(con_handle); 7723 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7724 requested_level, connection->requested_security_level, current_level); 7725 7726 // authentication active if authentication request was sent or planned level > 0 7727 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7728 if (authentication_active){ 7729 // authentication already active 7730 if (connection->requested_security_level < requested_level){ 7731 // increase requested level as new level is higher 7732 // TODO: handle re-authentication when done 7733 connection->requested_security_level = requested_level; 7734 } 7735 } else { 7736 // no request active, notify if security sufficient 7737 if (requested_level <= current_level){ 7738 hci_emit_security_level(con_handle, current_level); 7739 return; 7740 } 7741 7742 // store request 7743 connection->requested_security_level = requested_level; 7744 7745 // start to authenticate connection 7746 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7747 7748 // request remote features if not already active, also trigger hci_run 7749 hci_remote_features_query(con_handle); 7750 } 7751 } 7752 7753 /** 7754 * @brief start dedicated bonding with device. disconnect after bonding 7755 * @param device 7756 * @param request MITM protection 7757 * @result GAP_DEDICATED_BONDING_COMPLETE 7758 */ 7759 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7760 7761 // create connection state machine 7762 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7763 7764 if (!connection){ 7765 return BTSTACK_MEMORY_ALLOC_FAILED; 7766 } 7767 7768 // delete linkn key 7769 gap_drop_link_key_for_bd_addr(device); 7770 7771 // configure LEVEL_2/3, dedicated bonding 7772 connection->state = SEND_CREATE_CONNECTION; 7773 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7774 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7775 connection->bonding_flags = BONDING_DEDICATED; 7776 7777 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7778 7779 // handle: connnection failure (connection complete != ok) 7780 // handle: authentication failure 7781 // handle: disconnect on done 7782 7783 hci_run(); 7784 7785 return 0; 7786 } 7787 7788 void gap_set_local_name(const char * local_name){ 7789 hci_stack->local_name = local_name; 7790 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7791 // also update EIR if not set by user 7792 if (hci_stack->eir_data == NULL){ 7793 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7794 } 7795 hci_run(); 7796 } 7797 #endif 7798 7799 7800 #ifdef ENABLE_BLE 7801 7802 #ifdef ENABLE_LE_CENTRAL 7803 void gap_start_scan(void){ 7804 hci_stack->le_scanning_enabled = true; 7805 hci_run(); 7806 } 7807 7808 void gap_stop_scan(void){ 7809 hci_stack->le_scanning_enabled = false; 7810 hci_run(); 7811 } 7812 7813 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7814 hci_stack->le_scan_type = scan_type; 7815 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7816 hci_stack->le_scan_interval = scan_interval; 7817 hci_stack->le_scan_window = scan_window; 7818 hci_stack->le_scanning_param_update = true; 7819 hci_run(); 7820 } 7821 7822 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7823 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 7824 } 7825 7826 void gap_set_scan_duplicate_filter(bool enabled){ 7827 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 7828 } 7829 7830 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 7831 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 7832 if (!conn){ 7833 // disallow if le connection is already outgoing 7834 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7835 log_error("le connection already active"); 7836 return ERROR_CODE_COMMAND_DISALLOWED; 7837 } 7838 7839 log_info("gap_connect: no connection exists yet, creating context"); 7840 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 7841 if (!conn){ 7842 // notify client that alloc failed 7843 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7844 log_info("gap_connect: failed to alloc hci_connection_t"); 7845 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 7846 } 7847 7848 // set le connecting state 7849 if (hci_is_le_connection_type(addr_type)){ 7850 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 7851 } 7852 7853 conn->state = SEND_CREATE_CONNECTION; 7854 log_info("gap_connect: send create connection next"); 7855 hci_run(); 7856 return ERROR_CODE_SUCCESS; 7857 } 7858 7859 if (!hci_is_le_connection(conn) || 7860 (conn->state == SEND_CREATE_CONNECTION) || 7861 (conn->state == SENT_CREATE_CONNECTION)) { 7862 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 7863 log_error("gap_connect: classic connection or connect is already being created"); 7864 return GATT_CLIENT_IN_WRONG_STATE; 7865 } 7866 7867 // check if connection was just disconnected 7868 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7869 log_info("gap_connect: send create connection (again)"); 7870 conn->state = SEND_CREATE_CONNECTION; 7871 hci_run(); 7872 return ERROR_CODE_SUCCESS; 7873 } 7874 7875 log_info("gap_connect: context exists with state %u", conn->state); 7876 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 7877 hci_run(); 7878 return ERROR_CODE_SUCCESS; 7879 } 7880 7881 // @assumption: only a single outgoing LE Connection exists 7882 static hci_connection_t * gap_get_outgoing_connection(void){ 7883 btstack_linked_item_t *it; 7884 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7885 hci_connection_t * conn = (hci_connection_t *) it; 7886 if (!hci_is_le_connection(conn)) continue; 7887 switch (conn->state){ 7888 case SEND_CREATE_CONNECTION: 7889 case SENT_CREATE_CONNECTION: 7890 return conn; 7891 default: 7892 break; 7893 }; 7894 } 7895 return NULL; 7896 } 7897 7898 uint8_t gap_connect_cancel(void){ 7899 hci_connection_t * conn; 7900 switch (hci_stack->le_connecting_request){ 7901 case LE_CONNECTING_IDLE: 7902 break; 7903 case LE_CONNECTING_WHITELIST: 7904 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7905 hci_run(); 7906 break; 7907 case LE_CONNECTING_DIRECT: 7908 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7909 conn = gap_get_outgoing_connection(); 7910 if (conn == NULL){ 7911 hci_run(); 7912 } else { 7913 switch (conn->state){ 7914 case SEND_CREATE_CONNECTION: 7915 // skip sending create connection and emit event instead 7916 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 7917 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 7918 btstack_memory_hci_connection_free( conn ); 7919 break; 7920 case SENT_CREATE_CONNECTION: 7921 // let hci_run_general_gap_le cancel outgoing connection 7922 hci_run(); 7923 break; 7924 default: 7925 break; 7926 } 7927 } 7928 break; 7929 default: 7930 btstack_unreachable(); 7931 break; 7932 } 7933 return ERROR_CODE_SUCCESS; 7934 } 7935 7936 /** 7937 * @brief Set connection parameters for outgoing connections 7938 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 7939 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 7940 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 7941 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 7942 * @param conn_latency, default: 4 7943 * @param supervision_timeout (unit: 10ms), default: 720 ms 7944 * @param min_ce_length (unit: 0.625ms), default: 10 ms 7945 * @param max_ce_length (unit: 0.625ms), default: 30 ms 7946 */ 7947 7948 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 7949 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 7950 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 7951 hci_stack->le_connection_scan_interval = conn_scan_interval; 7952 hci_stack->le_connection_scan_window = conn_scan_window; 7953 hci_stack->le_connection_interval_min = conn_interval_min; 7954 hci_stack->le_connection_interval_max = conn_interval_max; 7955 hci_stack->le_connection_latency = conn_latency; 7956 hci_stack->le_supervision_timeout = supervision_timeout; 7957 hci_stack->le_minimum_ce_length = min_ce_length; 7958 hci_stack->le_maximum_ce_length = max_ce_length; 7959 } 7960 #endif 7961 7962 /** 7963 * @brief Updates the connection parameters for a given LE connection 7964 * @param handle 7965 * @param conn_interval_min (unit: 1.25ms) 7966 * @param conn_interval_max (unit: 1.25ms) 7967 * @param conn_latency 7968 * @param supervision_timeout (unit: 10ms) 7969 * @return 0 if ok 7970 */ 7971 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7972 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7973 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7974 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7975 connection->le_conn_interval_min = conn_interval_min; 7976 connection->le_conn_interval_max = conn_interval_max; 7977 connection->le_conn_latency = conn_latency; 7978 connection->le_supervision_timeout = supervision_timeout; 7979 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 7980 hci_run(); 7981 return 0; 7982 } 7983 7984 /** 7985 * @brief Request an update of the connection parameter for a given LE connection 7986 * @param handle 7987 * @param conn_interval_min (unit: 1.25ms) 7988 * @param conn_interval_max (unit: 1.25ms) 7989 * @param conn_latency 7990 * @param supervision_timeout (unit: 10ms) 7991 * @return 0 if ok 7992 */ 7993 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7994 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7995 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7996 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7997 connection->le_conn_interval_min = conn_interval_min; 7998 connection->le_conn_interval_max = conn_interval_max; 7999 connection->le_conn_latency = conn_latency; 8000 connection->le_supervision_timeout = supervision_timeout; 8001 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8002 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8003 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8004 return 0; 8005 } 8006 8007 #ifdef ENABLE_LE_PERIPHERAL 8008 8009 /** 8010 * @brief Set Advertisement Data 8011 * @param advertising_data_length 8012 * @param advertising_data (max 31 octets) 8013 * @note data is not copied, pointer has to stay valid 8014 */ 8015 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8016 hci_stack->le_advertisements_data_len = advertising_data_length; 8017 hci_stack->le_advertisements_data = advertising_data; 8018 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8019 hci_run(); 8020 } 8021 8022 /** 8023 * @brief Set Scan Response Data 8024 * @param advertising_data_length 8025 * @param advertising_data (max 31 octets) 8026 * @note data is not copied, pointer has to stay valid 8027 */ 8028 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8029 hci_stack->le_scan_response_data_len = scan_response_data_length; 8030 hci_stack->le_scan_response_data = scan_response_data; 8031 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8032 hci_run(); 8033 } 8034 8035 /** 8036 * @brief Set Advertisement Parameters 8037 * @param adv_int_min 8038 * @param adv_int_max 8039 * @param adv_type 8040 * @param direct_address_type 8041 * @param direct_address 8042 * @param channel_map 8043 * @param filter_policy 8044 * 8045 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8046 */ 8047 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8048 uint8_t direct_address_typ, bd_addr_t direct_address, 8049 uint8_t channel_map, uint8_t filter_policy) { 8050 8051 hci_stack->le_advertisements_interval_min = adv_int_min; 8052 hci_stack->le_advertisements_interval_max = adv_int_max; 8053 hci_stack->le_advertisements_type = adv_type; 8054 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8055 hci_stack->le_advertisements_channel_map = channel_map; 8056 hci_stack->le_advertisements_filter_policy = filter_policy; 8057 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8058 6); 8059 8060 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8061 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8062 hci_run(); 8063 } 8064 8065 /** 8066 * @brief Enable/Disable Advertisements 8067 * @param enabled 8068 */ 8069 void gap_advertisements_enable(int enabled){ 8070 if (enabled == 0){ 8071 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8072 } else { 8073 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8074 } 8075 hci_update_advertisements_enabled_for_current_roles(); 8076 hci_run(); 8077 } 8078 8079 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8080 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8081 btstack_linked_list_iterator_t it; 8082 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8083 while (btstack_linked_list_iterator_has_next(&it)){ 8084 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8085 if ( item->advertising_handle == advertising_handle ) { 8086 return item; 8087 } 8088 } 8089 return NULL; 8090 } 8091 8092 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8093 // find free advertisement handle 8094 uint8_t advertisement_handle; 8095 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8096 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8097 } 8098 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8099 // clear 8100 memset(storage, 0, sizeof(le_advertising_set_t)); 8101 // copy params 8102 storage->advertising_handle = advertisement_handle; 8103 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8104 // add to list 8105 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8106 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8107 *out_advertising_handle = advertisement_handle; 8108 // set tasks and start 8109 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8110 hci_run(); 8111 return ERROR_CODE_SUCCESS; 8112 } 8113 8114 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8115 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8116 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8117 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8118 // set tasks and start 8119 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8120 hci_run(); 8121 return ERROR_CODE_SUCCESS; 8122 } 8123 8124 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8125 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8126 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8127 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8128 return ERROR_CODE_SUCCESS; 8129 } 8130 8131 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8132 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8133 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8134 memcpy(advertising_set->random_address, random_address, 6); 8135 // set tasks and start 8136 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8137 hci_run(); 8138 return ERROR_CODE_SUCCESS; 8139 } 8140 8141 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8142 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8143 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8144 advertising_set->adv_data = advertising_data; 8145 advertising_set->adv_data_len = advertising_data_length; 8146 // set tasks and start 8147 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8148 hci_run(); 8149 return ERROR_CODE_SUCCESS; 8150 } 8151 8152 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){ 8153 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8154 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8155 advertising_set->scan_data = scan_response_data; 8156 advertising_set->scan_data_len = scan_response_data_length; 8157 // set tasks and start 8158 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8159 hci_run(); 8160 return ERROR_CODE_SUCCESS; 8161 } 8162 8163 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8164 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8165 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8166 advertising_set->enable_timeout = timeout; 8167 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8168 // set tasks and start 8169 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8170 hci_run(); 8171 return ERROR_CODE_SUCCESS; 8172 } 8173 8174 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8175 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8176 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8177 // set tasks and start 8178 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8179 hci_run(); 8180 return ERROR_CODE_SUCCESS; 8181 } 8182 8183 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8184 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8185 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8186 // set tasks and start 8187 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8188 hci_run(); 8189 return ERROR_CODE_SUCCESS; 8190 } 8191 8192 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8193 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8194 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8195 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8196 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8197 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8198 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8199 // set tasks and start 8200 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8201 hci_run(); 8202 return ERROR_CODE_SUCCESS; 8203 } 8204 8205 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8206 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8207 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8208 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8209 return ERROR_CODE_SUCCESS; 8210 } 8211 8212 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8213 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8214 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8215 advertising_set->periodic_data = periodic_data; 8216 advertising_set->periodic_data_len = periodic_data_length; 8217 // set tasks and start 8218 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8219 hci_run(); 8220 return ERROR_CODE_SUCCESS; 8221 } 8222 8223 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8224 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8225 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8226 // set tasks and start 8227 advertising_set->periodic_include_adi = include_adi; 8228 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8229 hci_run(); 8230 return ERROR_CODE_SUCCESS; 8231 } 8232 8233 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8234 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8235 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8236 // set tasks and start 8237 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8238 hci_run(); 8239 return ERROR_CODE_SUCCESS; 8240 } 8241 8242 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8243 hci_stack->le_past_mode = mode; 8244 hci_stack->le_past_skip = skip; 8245 hci_stack->le_past_sync_timeout = sync_timeout; 8246 hci_stack->le_past_cte_type = cte_type; 8247 hci_stack->le_past_set_default_params = true; 8248 hci_run(); 8249 return ERROR_CODE_SUCCESS; 8250 } 8251 8252 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8253 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8254 if (hci_connection == NULL){ 8255 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8256 } 8257 hci_connection->le_past_sync_handle = sync_handle; 8258 hci_connection->le_past_service_data = service_data; 8259 hci_run(); 8260 return ERROR_CODE_SUCCESS; 8261 } 8262 8263 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8264 8265 #endif 8266 8267 #endif 8268 8269 void hci_le_set_own_address_type(uint8_t own_address_type){ 8270 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8271 if (own_address_type == hci_stack->le_own_addr_type) return; 8272 hci_stack->le_own_addr_type = own_address_type; 8273 8274 #ifdef ENABLE_LE_PERIPHERAL 8275 // update advertisement parameters, too 8276 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8277 hci_run(); 8278 #endif 8279 #ifdef ENABLE_LE_CENTRAL 8280 // note: we don't update scan parameters or modify ongoing connection attempts 8281 #endif 8282 } 8283 8284 void hci_le_random_address_set(const bd_addr_t random_address){ 8285 memcpy(hci_stack->le_random_address, random_address, 6); 8286 hci_stack->le_random_address_set = true; 8287 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8288 hci_run(); 8289 } 8290 8291 #endif 8292 8293 uint8_t gap_disconnect(hci_con_handle_t handle){ 8294 hci_connection_t * conn = hci_connection_for_handle(handle); 8295 if (!conn){ 8296 hci_emit_disconnection_complete(handle, 0); 8297 return 0; 8298 } 8299 // ignore if already disconnected 8300 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8301 return 0; 8302 } 8303 conn->state = SEND_DISCONNECT; 8304 hci_run(); 8305 return 0; 8306 } 8307 8308 int gap_read_rssi(hci_con_handle_t con_handle){ 8309 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8310 if (hci_connection == NULL) return 0; 8311 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8312 hci_run(); 8313 return 1; 8314 } 8315 8316 /** 8317 * @brief Get connection type 8318 * @param con_handle 8319 * @result connection_type 8320 */ 8321 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8322 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8323 if (!conn) return GAP_CONNECTION_INVALID; 8324 switch (conn->address_type){ 8325 case BD_ADDR_TYPE_LE_PUBLIC: 8326 case BD_ADDR_TYPE_LE_RANDOM: 8327 return GAP_CONNECTION_LE; 8328 case BD_ADDR_TYPE_SCO: 8329 return GAP_CONNECTION_SCO; 8330 case BD_ADDR_TYPE_ACL: 8331 return GAP_CONNECTION_ACL; 8332 default: 8333 return GAP_CONNECTION_INVALID; 8334 } 8335 } 8336 8337 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8338 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8339 if (!conn) return HCI_ROLE_INVALID; 8340 return (hci_role_t) conn->role; 8341 } 8342 8343 8344 #ifdef ENABLE_CLASSIC 8345 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8346 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8347 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8348 conn->request_role = role; 8349 hci_run(); 8350 return ERROR_CODE_SUCCESS; 8351 } 8352 #endif 8353 8354 #ifdef ENABLE_BLE 8355 8356 uint8_t gap_le_set_phy(hci_con_handle_t con_handle, uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint8_t phy_options){ 8357 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8358 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8359 8360 conn->le_phy_update_all_phys = all_phys; 8361 conn->le_phy_update_tx_phys = tx_phys; 8362 conn->le_phy_update_rx_phys = rx_phys; 8363 conn->le_phy_update_phy_options = phy_options; 8364 8365 hci_run(); 8366 8367 return 0; 8368 } 8369 8370 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8371 // check if already in list 8372 btstack_linked_list_iterator_t it; 8373 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8374 while (btstack_linked_list_iterator_has_next(&it)) { 8375 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8376 if (entry->address_type != address_type) { 8377 continue; 8378 } 8379 if (memcmp(entry->address, address, 6) != 0) { 8380 continue; 8381 } 8382 // disallow if already scheduled to add 8383 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 8384 return ERROR_CODE_COMMAND_DISALLOWED; 8385 } 8386 // still on controller, but scheduled to remove -> re-add 8387 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 8388 return ERROR_CODE_SUCCESS; 8389 } 8390 // alloc and add to list 8391 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8392 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8393 entry->address_type = address_type; 8394 (void)memcpy(entry->address, address, 6); 8395 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8396 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8397 return ERROR_CODE_SUCCESS; 8398 } 8399 8400 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8401 btstack_linked_list_iterator_t it; 8402 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8403 while (btstack_linked_list_iterator_has_next(&it)){ 8404 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8405 if (entry->address_type != address_type) { 8406 continue; 8407 } 8408 if (memcmp(entry->address, address, 6) != 0) { 8409 continue; 8410 } 8411 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8412 // remove from controller if already present 8413 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8414 } else { 8415 // directly remove entry from whitelist 8416 btstack_linked_list_iterator_remove(&it); 8417 btstack_memory_whitelist_entry_free(entry); 8418 } 8419 return ERROR_CODE_SUCCESS; 8420 } 8421 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8422 } 8423 8424 static void hci_whitelist_clear(void){ 8425 btstack_linked_list_iterator_t it; 8426 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8427 while (btstack_linked_list_iterator_has_next(&it)){ 8428 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8429 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8430 // remove from controller if already present 8431 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8432 continue; 8433 } 8434 // directly remove entry from whitelist 8435 btstack_linked_list_iterator_remove(&it); 8436 btstack_memory_whitelist_entry_free(entry); 8437 } 8438 } 8439 8440 /** 8441 * @brief Clear Whitelist 8442 * @return 0 if ok 8443 */ 8444 uint8_t gap_whitelist_clear(void){ 8445 hci_whitelist_clear(); 8446 hci_run(); 8447 return ERROR_CODE_SUCCESS; 8448 } 8449 8450 /** 8451 * @brief Add Device to Whitelist 8452 * @param address_typ 8453 * @param address 8454 * @return 0 if ok 8455 */ 8456 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8457 uint8_t status = hci_whitelist_add(address_type, address); 8458 if (status){ 8459 return status; 8460 } 8461 hci_run(); 8462 return ERROR_CODE_SUCCESS; 8463 } 8464 8465 /** 8466 * @brief Remove Device from Whitelist 8467 * @param address_typ 8468 * @param address 8469 * @return 0 if ok 8470 */ 8471 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8472 uint8_t status = hci_whitelist_remove(address_type, address); 8473 if (status){ 8474 return status; 8475 } 8476 hci_run(); 8477 return ERROR_CODE_SUCCESS; 8478 } 8479 8480 #ifdef ENABLE_LE_CENTRAL 8481 /** 8482 * @brief Connect with Whitelist 8483 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8484 * @return - if ok 8485 */ 8486 uint8_t gap_connect_with_whitelist(void){ 8487 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8488 return ERROR_CODE_COMMAND_DISALLOWED; 8489 } 8490 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8491 hci_run(); 8492 return ERROR_CODE_SUCCESS; 8493 } 8494 8495 /** 8496 * @brief Auto Connection Establishment - Start Connecting to device 8497 * @param address_typ 8498 * @param address 8499 * @return 0 if ok 8500 */ 8501 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8502 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8503 return ERROR_CODE_COMMAND_DISALLOWED; 8504 } 8505 8506 uint8_t status = hci_whitelist_add(address_type, address); 8507 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8508 return status; 8509 } 8510 8511 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8512 8513 hci_run(); 8514 return ERROR_CODE_SUCCESS; 8515 } 8516 8517 /** 8518 * @brief Auto Connection Establishment - Stop Connecting to device 8519 * @param address_typ 8520 * @param address 8521 * @return 0 if ok 8522 */ 8523 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8524 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8525 return ERROR_CODE_COMMAND_DISALLOWED; 8526 } 8527 8528 hci_whitelist_remove(address_type, address); 8529 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8530 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8531 } 8532 hci_run(); 8533 return 0; 8534 } 8535 8536 /** 8537 * @brief Auto Connection Establishment - Stop everything 8538 * @note Convenience function to stop all active auto connection attempts 8539 */ 8540 uint8_t gap_auto_connection_stop_all(void){ 8541 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8542 return ERROR_CODE_COMMAND_DISALLOWED; 8543 } 8544 hci_whitelist_clear(); 8545 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8546 hci_run(); 8547 return ERROR_CODE_SUCCESS; 8548 } 8549 8550 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8551 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8552 if (!conn) return 0; 8553 return conn->le_connection_interval; 8554 } 8555 #endif 8556 #endif 8557 8558 #ifdef ENABLE_CLASSIC 8559 /** 8560 * @brief Set Extended Inquiry Response data 8561 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8562 * @note has to be done before stack starts up 8563 */ 8564 void gap_set_extended_inquiry_response(const uint8_t * data){ 8565 hci_stack->eir_data = data; 8566 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8567 hci_run(); 8568 } 8569 8570 /** 8571 * @brief Start GAP Classic Inquiry 8572 * @param duration in 1.28s units 8573 * @return 0 if ok 8574 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8575 */ 8576 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8577 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8578 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8579 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8580 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8581 } 8582 hci_stack->inquiry_state = duration_in_1280ms_units; 8583 hci_stack->inquiry_max_period_length = 0; 8584 hci_stack->inquiry_min_period_length = 0; 8585 hci_run(); 8586 return 0; 8587 } 8588 8589 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8590 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8591 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8592 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8593 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8594 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8595 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8596 8597 hci_stack->inquiry_state = duration; 8598 hci_stack->inquiry_max_period_length = max_period_length; 8599 hci_stack->inquiry_min_period_length = min_period_length; 8600 hci_run(); 8601 return 0; 8602 } 8603 8604 /** 8605 * @brief Stop GAP Classic Inquiry 8606 * @return 0 if ok 8607 */ 8608 int gap_inquiry_stop(void){ 8609 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8610 // emit inquiry complete event, before it even started 8611 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8612 hci_emit_event(event, sizeof(event), 1); 8613 return 0; 8614 } 8615 switch (hci_stack->inquiry_state){ 8616 case GAP_INQUIRY_STATE_ACTIVE: 8617 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8618 hci_run(); 8619 return ERROR_CODE_SUCCESS; 8620 case GAP_INQUIRY_STATE_PERIODIC: 8621 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8622 hci_run(); 8623 return ERROR_CODE_SUCCESS; 8624 default: 8625 return ERROR_CODE_COMMAND_DISALLOWED; 8626 } 8627 } 8628 8629 void gap_inquiry_set_lap(uint32_t lap){ 8630 hci_stack->inquiry_lap = lap; 8631 } 8632 8633 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8634 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8635 hci_stack->inquiry_scan_window = inquiry_scan_window; 8636 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8637 hci_run(); 8638 } 8639 8640 8641 /** 8642 * @brief Remote Name Request 8643 * @param addr 8644 * @param page_scan_repetition_mode 8645 * @param clock_offset only used when bit 15 is set 8646 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8647 */ 8648 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8649 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8650 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8651 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8652 hci_stack->remote_name_clock_offset = clock_offset; 8653 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8654 hci_run(); 8655 return 0; 8656 } 8657 8658 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8659 hci_stack->gap_pairing_state = state; 8660 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8661 hci_run(); 8662 return 0; 8663 } 8664 8665 /** 8666 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8667 * @param addr 8668 * @param pin_data 8669 * @param pin_len 8670 * @return 0 if ok 8671 */ 8672 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8673 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8674 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8675 hci_stack->gap_pairing_pin_len = pin_len; 8676 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8677 } 8678 8679 /** 8680 * @brief Legacy Pairing Pin Code Response 8681 * @param addr 8682 * @param pin 8683 * @return 0 if ok 8684 */ 8685 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8686 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8687 } 8688 8689 /** 8690 * @brief Abort Legacy Pairing 8691 * @param addr 8692 * @param pin 8693 * @return 0 if ok 8694 */ 8695 int gap_pin_code_negative(bd_addr_t addr){ 8696 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8697 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8698 } 8699 8700 /** 8701 * @brief SSP Passkey Response 8702 * @param addr 8703 * @param passkey 8704 * @return 0 if ok 8705 */ 8706 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8707 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8708 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8709 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8710 } 8711 8712 /** 8713 * @brief Abort SSP Passkey Entry/Pairing 8714 * @param addr 8715 * @param pin 8716 * @return 0 if ok 8717 */ 8718 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8719 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8720 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8721 } 8722 8723 /** 8724 * @brief Accept SSP Numeric Comparison 8725 * @param addr 8726 * @param passkey 8727 * @return 0 if ok 8728 */ 8729 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8730 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8731 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8732 } 8733 8734 /** 8735 * @brief Abort SSP Numeric Comparison/Pairing 8736 * @param addr 8737 * @param pin 8738 * @return 0 if ok 8739 */ 8740 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8741 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8742 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8743 } 8744 8745 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8746 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8747 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8748 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8749 connectionSetAuthenticationFlags(conn, flag); 8750 hci_run(); 8751 return ERROR_CODE_SUCCESS; 8752 } 8753 #endif 8754 8755 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8756 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8757 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8758 } 8759 8760 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8761 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8762 } 8763 #endif 8764 8765 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8766 /** 8767 * @brief Report Remote OOB Data 8768 * @param bd_addr 8769 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8770 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8771 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8772 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8773 */ 8774 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){ 8775 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8776 if (connection == NULL) { 8777 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8778 } 8779 connection->classic_oob_c_192 = c_192; 8780 connection->classic_oob_r_192 = r_192; 8781 8782 // ignore P-256 if not supported by us 8783 if (hci_stack->secure_connections_active){ 8784 connection->classic_oob_c_256 = c_256; 8785 connection->classic_oob_r_256 = r_256; 8786 } 8787 8788 return ERROR_CODE_SUCCESS; 8789 } 8790 /** 8791 * @brief Generate new OOB data 8792 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 8793 */ 8794 void gap_ssp_generate_oob_data(void){ 8795 hci_stack->classic_read_local_oob_data = true; 8796 hci_run(); 8797 } 8798 8799 #endif 8800 8801 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 8802 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 8803 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8804 if (connection == NULL) { 8805 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8806 } 8807 8808 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 8809 connection->link_key_type = type; 8810 8811 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 8812 } 8813 8814 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 8815 /** 8816 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 8817 * @param inquiry_mode see bluetooth_defines.h 8818 */ 8819 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 8820 hci_stack->inquiry_mode = inquiry_mode; 8821 } 8822 8823 /** 8824 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 8825 */ 8826 void hci_set_sco_voice_setting(uint16_t voice_setting){ 8827 hci_stack->sco_voice_setting = voice_setting; 8828 } 8829 8830 /** 8831 * @brief Get SCO Voice Setting 8832 * @return current voice setting 8833 */ 8834 uint16_t hci_get_sco_voice_setting(void){ 8835 return hci_stack->sco_voice_setting; 8836 } 8837 8838 static int hci_have_usb_transport(void){ 8839 if (!hci_stack->hci_transport) return 0; 8840 const char * transport_name = hci_stack->hci_transport->name; 8841 if (!transport_name) return 0; 8842 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 8843 } 8844 8845 /** @brief Get SCO packet length for current SCO Voice setting 8846 * @note Using SCO packets of the exact length is required for USB transfer 8847 * @return Length of SCO packets in bytes (not audio frames) 8848 */ 8849 uint16_t hci_get_sco_packet_length(void){ 8850 uint16_t sco_packet_length = 0; 8851 8852 #ifdef ENABLE_SCO_OVER_HCI 8853 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8854 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8855 8856 if (hci_have_usb_transport()){ 8857 // see Core Spec for H2 USB Transfer. 8858 // 3 byte SCO header + 24 bytes per connection 8859 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 8860 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 8861 } else { 8862 // 3 byte SCO header + SCO packet size over the air (60 bytes) 8863 sco_packet_length = 3 + 60 * multiplier; 8864 // assert that it still fits inside an SCO buffer 8865 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 8866 sco_packet_length = 3 + 60; 8867 } 8868 } 8869 #endif 8870 8871 #ifdef HAVE_SCO_TRANSPORT 8872 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8873 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8874 sco_packet_length = 3 + 60 * multiplier; 8875 #endif 8876 return sco_packet_length; 8877 } 8878 8879 /** 8880 * @brief Sets the master/slave policy 8881 * @param policy (0: attempt to become master, 1: let connecting device decide) 8882 */ 8883 void hci_set_master_slave_policy(uint8_t policy){ 8884 hci_stack->master_slave_policy = policy; 8885 } 8886 8887 #endif 8888 8889 HCI_STATE hci_get_state(void){ 8890 return hci_stack->state; 8891 } 8892 8893 #ifdef ENABLE_CLASSIC 8894 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 8895 hci_stack->gap_classic_accept_callback = accept_callback; 8896 } 8897 #endif 8898 8899 /** 8900 * @brief Set callback for Bluetooth Hardware Error 8901 */ 8902 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 8903 hci_stack->hardware_error_callback = fn; 8904 } 8905 8906 void hci_disconnect_all(void){ 8907 btstack_linked_list_iterator_t it; 8908 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8909 while (btstack_linked_list_iterator_has_next(&it)){ 8910 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8911 if (con->state == SENT_DISCONNECT) continue; 8912 con->state = SEND_DISCONNECT; 8913 } 8914 hci_run(); 8915 } 8916 8917 uint16_t hci_get_manufacturer(void){ 8918 return hci_stack->manufacturer; 8919 } 8920 8921 #ifdef ENABLE_BLE 8922 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 8923 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 8924 if (!hci_con) return NULL; 8925 return &hci_con->sm_connection; 8926 } 8927 8928 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 8929 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 8930 #endif 8931 8932 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 8933 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8934 if (hci_connection == NULL) return 0; 8935 if (hci_is_le_connection(hci_connection)){ 8936 #ifdef ENABLE_BLE 8937 sm_connection_t * sm_conn = &hci_connection->sm_connection; 8938 if (sm_conn->sm_connection_encrypted) { 8939 return sm_conn->sm_actual_encryption_key_size; 8940 } 8941 #endif 8942 } else { 8943 #ifdef ENABLE_CLASSIC 8944 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 8945 return hci_connection->encryption_key_size; 8946 } 8947 #endif 8948 } 8949 return 0; 8950 } 8951 8952 bool gap_authenticated(hci_con_handle_t con_handle){ 8953 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8954 if (hci_connection == NULL) return false; 8955 8956 switch (hci_connection->address_type){ 8957 #ifdef ENABLE_BLE 8958 case BD_ADDR_TYPE_LE_PUBLIC: 8959 case BD_ADDR_TYPE_LE_RANDOM: 8960 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 8961 return hci_connection->sm_connection.sm_connection_authenticated != 0; 8962 #endif 8963 #ifdef ENABLE_CLASSIC 8964 case BD_ADDR_TYPE_SCO: 8965 case BD_ADDR_TYPE_ACL: 8966 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 8967 #endif 8968 default: 8969 return false; 8970 } 8971 } 8972 8973 bool gap_secure_connection(hci_con_handle_t con_handle){ 8974 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8975 if (hci_connection == NULL) return 0; 8976 8977 switch (hci_connection->address_type){ 8978 #ifdef ENABLE_BLE 8979 case BD_ADDR_TYPE_LE_PUBLIC: 8980 case BD_ADDR_TYPE_LE_RANDOM: 8981 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 8982 return hci_connection->sm_connection.sm_connection_sc != 0; 8983 #endif 8984 #ifdef ENABLE_CLASSIC 8985 case BD_ADDR_TYPE_SCO: 8986 case BD_ADDR_TYPE_ACL: 8987 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 8988 #endif 8989 default: 8990 return false; 8991 } 8992 } 8993 8994 bool gap_bonded(hci_con_handle_t con_handle){ 8995 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8996 if (hci_connection == NULL) return 0; 8997 8998 #ifdef ENABLE_CLASSIC 8999 link_key_t link_key; 9000 link_key_type_t link_key_type; 9001 #endif 9002 switch (hci_connection->address_type){ 9003 #ifdef ENABLE_BLE 9004 case BD_ADDR_TYPE_LE_PUBLIC: 9005 case BD_ADDR_TYPE_LE_RANDOM: 9006 return hci_connection->sm_connection.sm_le_db_index >= 0; 9007 #endif 9008 #ifdef ENABLE_CLASSIC 9009 case BD_ADDR_TYPE_SCO: 9010 case BD_ADDR_TYPE_ACL: 9011 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9012 #endif 9013 default: 9014 return false; 9015 } 9016 } 9017 9018 #ifdef ENABLE_BLE 9019 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9020 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9021 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9022 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9023 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9024 return sm_conn->sm_connection_authorization_state; 9025 } 9026 #endif 9027 9028 #ifdef ENABLE_CLASSIC 9029 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){ 9030 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9031 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9032 conn->sniff_min_interval = sniff_min_interval; 9033 conn->sniff_max_interval = sniff_max_interval; 9034 conn->sniff_attempt = sniff_attempt; 9035 conn->sniff_timeout = sniff_timeout; 9036 hci_run(); 9037 return 0; 9038 } 9039 9040 /** 9041 * @brief Exit Sniff mode 9042 * @param con_handle 9043 @ @return 0 if ok 9044 */ 9045 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9046 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9047 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9048 conn->sniff_min_interval = 0xffff; 9049 hci_run(); 9050 return 0; 9051 } 9052 9053 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){ 9054 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9055 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9056 conn->sniff_subrating_max_latency = max_latency; 9057 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9058 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9059 hci_run(); 9060 return ERROR_CODE_SUCCESS; 9061 } 9062 9063 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){ 9064 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9065 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9066 conn->qos_service_type = service_type; 9067 conn->qos_token_rate = token_rate; 9068 conn->qos_peak_bandwidth = peak_bandwidth; 9069 conn->qos_latency = latency; 9070 conn->qos_delay_variation = delay_variation; 9071 hci_run(); 9072 return ERROR_CODE_SUCCESS; 9073 } 9074 9075 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9076 hci_stack->new_page_scan_interval = page_scan_interval; 9077 hci_stack->new_page_scan_window = page_scan_window; 9078 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9079 hci_run(); 9080 } 9081 9082 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9083 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9084 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9085 hci_run(); 9086 } 9087 9088 void gap_set_page_timeout(uint16_t page_timeout){ 9089 hci_stack->page_timeout = page_timeout; 9090 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9091 hci_run(); 9092 } 9093 9094 #endif 9095 9096 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9097 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9098 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9099 if (le_device_db_index >= le_device_db_max_count()) return; 9100 uint8_t offset = le_device_db_index >> 3; 9101 uint8_t mask = 1 << (le_device_db_index & 7); 9102 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9103 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9104 // note: go back to remove entries, otherwise, a remove + add will skip the add 9105 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9106 } 9107 } 9108 9109 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9110 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9111 if (le_device_db_index >= le_device_db_max_count()) return; 9112 uint8_t offset = le_device_db_index >> 3; 9113 uint8_t mask = 1 << (le_device_db_index & 7); 9114 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9115 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9116 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9117 } 9118 } 9119 9120 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9121 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9122 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9123 } 9124 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9125 // restart le resolving list update 9126 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9127 } 9128 return ERROR_CODE_SUCCESS; 9129 } 9130 #endif 9131 9132 #ifdef ENABLE_BLE 9133 #ifdef ENABLE_LE_CENTRAL 9134 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9135 9136 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9137 // check if already in list 9138 btstack_linked_list_iterator_t it; 9139 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9140 while (btstack_linked_list_iterator_has_next(&it)) { 9141 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9142 if (entry->sid != advertising_sid) { 9143 continue; 9144 } 9145 if (entry->address_type != address_type) { 9146 continue; 9147 } 9148 if (memcmp(entry->address, address, 6) != 0) { 9149 continue; 9150 } 9151 // disallow if already scheduled to add 9152 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9153 return ERROR_CODE_COMMAND_DISALLOWED; 9154 } 9155 // still on controller, but scheduled to remove -> re-add 9156 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9157 return ERROR_CODE_SUCCESS; 9158 } 9159 // alloc and add to list 9160 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9161 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9162 entry->sid = advertising_sid; 9163 entry->address_type = address_type; 9164 (void)memcpy(entry->address, address, 6); 9165 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9166 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9167 return ERROR_CODE_SUCCESS; 9168 } 9169 9170 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9171 btstack_linked_list_iterator_t it; 9172 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9173 while (btstack_linked_list_iterator_has_next(&it)){ 9174 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9175 if (entry->sid != advertising_sid) { 9176 continue; 9177 } 9178 if (entry->address_type != address_type) { 9179 continue; 9180 } 9181 if (memcmp(entry->address, address, 6) != 0) { 9182 continue; 9183 } 9184 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9185 // remove from controller if already present 9186 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9187 } else { 9188 // directly remove entry from whitelist 9189 btstack_linked_list_iterator_remove(&it); 9190 btstack_memory_periodic_advertiser_list_entry_free(entry); 9191 } 9192 return ERROR_CODE_SUCCESS; 9193 } 9194 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9195 } 9196 9197 static void hci_periodic_advertiser_list_clear(void){ 9198 btstack_linked_list_iterator_t it; 9199 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9200 while (btstack_linked_list_iterator_has_next(&it)){ 9201 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9202 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9203 // remove from controller if already present 9204 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9205 continue; 9206 } 9207 // directly remove entry from whitelist 9208 btstack_linked_list_iterator_remove(&it); 9209 btstack_memory_periodic_advertiser_list_entry_free(entry); 9210 } 9211 } 9212 9213 uint8_t gap_periodic_advertiser_list_clear(void){ 9214 hci_periodic_advertiser_list_clear(); 9215 hci_run(); 9216 return ERROR_CODE_SUCCESS; 9217 } 9218 9219 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9220 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9221 if (status){ 9222 return status; 9223 } 9224 hci_run(); 9225 return ERROR_CODE_SUCCESS; 9226 } 9227 9228 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9229 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9230 if (status){ 9231 return status; 9232 } 9233 hci_run(); 9234 return ERROR_CODE_SUCCESS; 9235 } 9236 9237 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9238 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9239 // abort if already active 9240 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9241 return ERROR_CODE_COMMAND_DISALLOWED; 9242 } 9243 // store request 9244 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9245 hci_stack->le_periodic_sync_options = options; 9246 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9247 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9248 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9249 hci_stack->le_periodic_sync_skip = skip; 9250 hci_stack->le_periodic_sync_timeout = sync_timeout; 9251 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9252 9253 hci_run(); 9254 return ERROR_CODE_SUCCESS; 9255 } 9256 9257 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9258 // abort if not requested 9259 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9260 return ERROR_CODE_COMMAND_DISALLOWED; 9261 } 9262 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9263 hci_run(); 9264 return ERROR_CODE_SUCCESS; 9265 } 9266 9267 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9268 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9269 return ERROR_CODE_COMMAND_DISALLOWED; 9270 } 9271 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9272 hci_run(); 9273 return ERROR_CODE_SUCCESS; 9274 } 9275 9276 #endif 9277 #endif 9278 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9279 static uint8_t hci_iso_stream_create(hci_iso_type_t iso_type, hci_con_handle_t con_handle, uint8_t group_id, 9280 hci_iso_stream_state_t state) { 9281 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9282 if (iso_stream == NULL){ 9283 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 9284 } else { 9285 iso_stream->iso_type = iso_type; 9286 iso_stream->state = state; 9287 iso_stream->con_handle = con_handle; 9288 iso_stream->group_id = group_id; 9289 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9290 return ERROR_CODE_SUCCESS; 9291 } 9292 } 9293 9294 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9295 btstack_linked_list_iterator_t it; 9296 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9297 while (btstack_linked_list_iterator_has_next(&it)){ 9298 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9299 if (iso_stream->con_handle == con_handle ) { 9300 return iso_stream; 9301 } 9302 } 9303 return NULL; 9304 } 9305 9306 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9307 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->con_handle, iso_stream->group_id); 9308 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9309 btstack_memory_hci_iso_stream_free(iso_stream); 9310 } 9311 9312 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9313 btstack_linked_list_iterator_t it; 9314 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9315 while (btstack_linked_list_iterator_has_next(&it)){ 9316 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9317 if ((iso_stream->group_id == group_id) && 9318 (iso_stream->iso_type == iso_type)){ 9319 btstack_linked_list_iterator_remove(&it); 9320 btstack_memory_hci_iso_stream_free(iso_stream); 9321 } 9322 } 9323 } 9324 9325 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9326 btstack_linked_list_iterator_t it; 9327 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9328 while (btstack_linked_list_iterator_has_next(&it)){ 9329 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9330 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9331 (iso_stream->group_id == group_id)){ 9332 btstack_linked_list_iterator_remove(&it); 9333 btstack_memory_hci_iso_stream_free(iso_stream); 9334 } 9335 } 9336 } 9337 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9338 btstack_linked_list_iterator_t it; 9339 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9340 while (btstack_linked_list_iterator_has_next(&it)){ 9341 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9342 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9343 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9344 } 9345 } 9346 } 9347 9348 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9349 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9350 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9351 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9352 return (sdu_len_offset + 2 + sdu_len) == size; 9353 } 9354 9355 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9356 if (hci_stack->iso_packet_handler == NULL) { 9357 return; 9358 } 9359 if (size < 4) { 9360 return; 9361 } 9362 9363 // parse header 9364 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9365 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9366 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9367 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9368 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9369 9370 // assert packet is complete 9371 if ((iso_data_len + 4u) != size){ 9372 return; 9373 } 9374 9375 if ((pb_flag & 0x01) == 0){ 9376 if (pb_flag == 0x02){ 9377 // The ISO_Data_Load field contains a header and a complete SDU. 9378 if (hci_iso_sdu_complete(packet, size)) { 9379 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9380 } 9381 } else { 9382 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9383 if (iso_stream == NULL){ 9384 return; 9385 } 9386 if (size > HCI_ISO_PAYLOAD_SIZE){ 9387 return; 9388 } 9389 memcpy(iso_stream->reassembly_buffer, packet, size); 9390 // fix pb_flag 9391 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9392 iso_stream->reassembly_pos = size; 9393 } 9394 } else { 9395 // iso_data_load contains continuation or last fragment of an SDU 9396 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9397 if (ts_flag != 0){ 9398 return; 9399 } 9400 // append fragment 9401 if (iso_stream == NULL){ 9402 return; 9403 } 9404 if (iso_stream->reassembly_pos == 0){ 9405 return; 9406 } 9407 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9408 // reset reassembly buffer 9409 iso_stream->reassembly_pos = 0; 9410 return; 9411 } 9412 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9413 iso_stream->reassembly_pos += iso_data_len; 9414 9415 // deliver if last fragment and SDU complete 9416 if (pb_flag == 0x03){ 9417 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9418 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9419 } 9420 iso_stream->reassembly_pos = 0; 9421 } 9422 } 9423 } 9424 9425 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9426 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9427 uint16_t pos = 0; 9428 event[pos++] = HCI_EVENT_META_GAP; 9429 event[pos++] = 4 + (2 * big->num_bis); 9430 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9431 event[pos++] = status; 9432 event[pos++] = big->big_handle; 9433 event[pos++] = big->num_bis; 9434 uint8_t i; 9435 for (i=0;i<big->num_bis;i++){ 9436 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9437 pos += 2; 9438 } 9439 hci_emit_event(event, pos, 0); 9440 } 9441 9442 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9443 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9444 uint16_t pos = 0; 9445 event[pos++] = HCI_EVENT_META_GAP; 9446 event[pos++] = 4 + (2 * cig->num_cis); 9447 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9448 event[pos++] = status; 9449 event[pos++] = cig->cig_id; 9450 event[pos++] = cig->num_cis; 9451 uint8_t i; 9452 for (i=0;i<cig->num_cis;i++){ 9453 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9454 pos += 2; 9455 } 9456 hci_emit_event(event, pos, 0); 9457 } 9458 9459 static void 9460 hci_emit_cis_created(uint8_t cig_id, hci_con_handle_t cis_con_handle, uint8_t status) { 9461 uint8_t event [7]; 9462 uint16_t pos = 0; 9463 event[pos++] = HCI_EVENT_META_GAP; 9464 event[pos++] = 5; 9465 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9466 event[pos++] = status; 9467 event[pos++] = cig_id; 9468 little_endian_store_16(event, pos, cis_con_handle); 9469 pos += 2; 9470 hci_emit_event(event, pos, 0); 9471 } 9472 9473 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9474 uint8_t event [4]; 9475 uint16_t pos = 0; 9476 event[pos++] = HCI_EVENT_META_GAP; 9477 event[pos++] = 2; 9478 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9479 event[pos++] = big->big_handle; 9480 hci_emit_event(event, pos, 0); 9481 } 9482 9483 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9484 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9485 uint16_t pos = 0; 9486 event[pos++] = HCI_EVENT_META_GAP; 9487 event[pos++] = 4; 9488 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9489 event[pos++] = status; 9490 event[pos++] = big_sync->big_handle; 9491 event[pos++] = big_sync->num_bis; 9492 uint8_t i; 9493 for (i=0;i<big_sync->num_bis;i++){ 9494 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9495 pos += 2; 9496 } 9497 hci_emit_event(event, pos, 0); 9498 } 9499 9500 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9501 uint8_t event [4]; 9502 uint16_t pos = 0; 9503 event[pos++] = HCI_EVENT_META_GAP; 9504 event[pos++] = 2; 9505 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9506 event[pos++] = big_handle; 9507 hci_emit_event(event, pos, 0); 9508 } 9509 9510 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9511 uint8_t event[6]; 9512 uint16_t pos = 0; 9513 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9514 event[pos++] = sizeof(event) - 2; 9515 event[pos++] = big->big_handle; 9516 event[pos++] = bis_index; 9517 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9518 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9519 } 9520 9521 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9522 uint8_t event[4]; 9523 uint16_t pos = 0; 9524 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9525 event[pos++] = sizeof(event) - 2; 9526 little_endian_store_16(event, pos, cis_con_handle); 9527 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9528 } 9529 9530 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9531 btstack_linked_list_iterator_t it; 9532 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9533 while (btstack_linked_list_iterator_has_next(&it)){ 9534 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9535 if ( big->big_handle == big_handle ) { 9536 return big; 9537 } 9538 } 9539 return NULL; 9540 } 9541 9542 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9543 btstack_linked_list_iterator_t it; 9544 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9545 while (btstack_linked_list_iterator_has_next(&it)){ 9546 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9547 if ( big_sync->big_handle == big_handle ) { 9548 return big_sync; 9549 } 9550 } 9551 return NULL; 9552 } 9553 9554 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9555 hci_stack->iso_packets_to_queue = num_packets; 9556 } 9557 9558 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9559 btstack_linked_list_iterator_t it; 9560 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9561 while (btstack_linked_list_iterator_has_next(&it)){ 9562 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9563 if ( cig->cig_id == cig_id ) { 9564 return cig; 9565 } 9566 } 9567 return NULL; 9568 } 9569 9570 static void hci_iso_notify_can_send_now(void){ 9571 9572 // BIG 9573 9574 btstack_linked_list_iterator_t it; 9575 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9576 while (btstack_linked_list_iterator_has_next(&it)){ 9577 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9578 // track number completed packet timestamps 9579 if (big->num_completed_timestamp_current_valid){ 9580 big->num_completed_timestamp_current_valid = false; 9581 if (big->num_completed_timestamp_previous_valid){ 9582 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9583 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9584 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9585 big->num_completed_timestamp_previous_ms); 9586 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9587 // to catch up, skip packet on all BIS 9588 uint8_t i; 9589 for (i=0;i<big->num_bis;i++){ 9590 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9591 if (iso_stream){ 9592 iso_stream->num_packets_to_skip++; 9593 } 9594 } 9595 } 9596 } 9597 big->num_completed_timestamp_previous_valid = true; 9598 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9599 } 9600 9601 if (big->can_send_now_requested){ 9602 // check if no outgoing iso packets pending and no can send now have to be emitted 9603 uint8_t i; 9604 bool can_send = true; 9605 uint8_t num_iso_queued_minimum = 0; 9606 for (i=0;i<big->num_bis;i++){ 9607 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9608 if (iso_stream == NULL) continue; 9609 // handle case where individual ISO packet was sent too late: 9610 // for each additionally queued packet, a new one needs to get skipped 9611 if (i==0){ 9612 num_iso_queued_minimum = iso_stream->num_packets_sent; 9613 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 9614 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 9615 iso_stream->num_packets_to_skip += num_packets_to_skip; 9616 iso_stream->num_packets_sent -= num_packets_to_skip; 9617 } 9618 // check if we can send now 9619 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 9620 can_send = false; 9621 break; 9622 } 9623 } 9624 if (can_send){ 9625 // propagate can send now to individual streams 9626 big->can_send_now_requested = false; 9627 for (i=0;i<big->num_bis;i++){ 9628 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9629 iso_stream->emit_ready_to_send = true; 9630 } 9631 } 9632 } 9633 } 9634 9635 if (hci_stack->hci_packet_buffer_reserved) return; 9636 9637 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9638 while (btstack_linked_list_iterator_has_next(&it)){ 9639 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9640 // report bis ready 9641 uint8_t i; 9642 for (i=0;i<big->num_bis;i++){ 9643 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9644 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9645 iso_stream->emit_ready_to_send = false; 9646 hci_emit_bis_can_send_now(big, i); 9647 break; 9648 } 9649 } 9650 } 9651 9652 // CIS 9653 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9654 while (btstack_linked_list_iterator_has_next(&it)) { 9655 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9656 if ((iso_stream->can_send_now_requested) && 9657 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 9658 iso_stream->can_send_now_requested = false; 9659 hci_emit_cis_can_send_now(iso_stream->con_handle); 9660 } 9661 } 9662 } 9663 9664 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9665 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9666 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9667 } 9668 if (big_params->num_bis == 0){ 9669 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9670 } 9671 if (big_params->num_bis > MAX_NR_BIS){ 9672 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9673 } 9674 9675 // reserve ISO Streams 9676 uint8_t i; 9677 uint8_t status = ERROR_CODE_SUCCESS; 9678 for (i=0;i<big_params->num_bis;i++){ 9679 status = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_CON_HANDLE_INVALID, big_params->big_handle, 9680 HCI_ISO_STREAM_STATE_REQUESTED); 9681 if (status != ERROR_CODE_SUCCESS) { 9682 break; 9683 } 9684 } 9685 9686 // free structs on error 9687 if (status != ERROR_CODE_SUCCESS){ 9688 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 9689 return status; 9690 } 9691 9692 le_audio_big_t * big = storage; 9693 big->big_handle = big_params->big_handle; 9694 big->params = big_params; 9695 big->state = LE_AUDIO_BIG_STATE_CREATE; 9696 big->num_bis = big_params->num_bis; 9697 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9698 9699 hci_run(); 9700 9701 return ERROR_CODE_SUCCESS; 9702 } 9703 9704 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9705 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9706 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9707 } 9708 if (big_sync_params->num_bis == 0){ 9709 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9710 } 9711 if (big_sync_params->num_bis > MAX_NR_BIS){ 9712 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9713 } 9714 9715 le_audio_big_sync_t * big_sync = storage; 9716 big_sync->big_handle = big_sync_params->big_handle; 9717 big_sync->params = big_sync_params; 9718 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9719 big_sync->num_bis = big_sync_params->num_bis; 9720 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9721 9722 hci_run(); 9723 9724 return ERROR_CODE_SUCCESS; 9725 } 9726 9727 uint8_t gap_big_terminate(uint8_t big_handle){ 9728 le_audio_big_t * big = hci_big_for_handle(big_handle); 9729 if (big == NULL){ 9730 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9731 } 9732 switch (big->state){ 9733 case LE_AUDIO_BIG_STATE_CREATE: 9734 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9735 hci_emit_big_terminated(big); 9736 break; 9737 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9738 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9739 break; 9740 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9741 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9742 case LE_AUDIO_BIG_STATE_ACTIVE: 9743 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9744 hci_run(); 9745 break; 9746 default: 9747 return ERROR_CODE_COMMAND_DISALLOWED; 9748 } 9749 return ERROR_CODE_SUCCESS; 9750 } 9751 9752 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9753 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9754 if (big_sync == NULL){ 9755 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9756 } 9757 switch (big_sync->state){ 9758 case LE_AUDIO_BIG_STATE_CREATE: 9759 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9760 hci_emit_big_sync_stopped(big_handle); 9761 break; 9762 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9763 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9764 break; 9765 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9766 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9767 case LE_AUDIO_BIG_STATE_ACTIVE: 9768 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 9769 hci_run(); 9770 break; 9771 default: 9772 return ERROR_CODE_COMMAND_DISALLOWED; 9773 } 9774 return ERROR_CODE_SUCCESS; 9775 } 9776 9777 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 9778 le_audio_big_t * big = hci_big_for_handle(big_handle); 9779 if (big == NULL){ 9780 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9781 } 9782 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 9783 return ERROR_CODE_COMMAND_DISALLOWED; 9784 } 9785 big->can_send_now_requested = true; 9786 hci_iso_notify_can_send_now(); 9787 return ERROR_CODE_SUCCESS; 9788 } 9789 9790 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 9791 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 9792 if (iso_stream == NULL){ 9793 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9794 } 9795 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 9796 return ERROR_CODE_COMMAND_DISALLOWED; 9797 } 9798 iso_stream->can_send_now_requested = true; 9799 hci_iso_notify_can_send_now(); 9800 return ERROR_CODE_SUCCESS; 9801 } 9802 9803 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 9804 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 9805 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9806 } 9807 if (cig_params->num_cis == 0){ 9808 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9809 } 9810 if (cig_params->num_cis > MAX_NR_BIS){ 9811 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9812 } 9813 9814 // reserve ISO Streams 9815 uint8_t i; 9816 uint8_t status = ERROR_CODE_SUCCESS; 9817 for (i=0;i<cig_params->num_cis;i++){ 9818 status = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_CON_HANDLE_INVALID, cig_params->cig_id, 9819 HCI_ISO_STREAM_STATE_REQUESTED); 9820 if (status != ERROR_CODE_SUCCESS) { 9821 break; 9822 } 9823 } 9824 9825 // free structs on error 9826 if (status != ERROR_CODE_SUCCESS){ 9827 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 9828 return status; 9829 } 9830 9831 le_audio_cig_t * cig = storage; 9832 cig->cig_id = cig_params->cig_id; 9833 cig->num_cis = cig_params->num_cis; 9834 cig->params = cig_params; 9835 cig->state = LE_AUDIO_CIG_STATE_CREATE; 9836 for (i=0;i<cig->num_cis;i++){ 9837 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 9838 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 9839 cig->cis_setup_active[i] = false; 9840 cig->cis_established[i] = false; 9841 } 9842 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 9843 9844 hci_run(); 9845 9846 return ERROR_CODE_SUCCESS; 9847 } 9848 9849 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 9850 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 9851 if (cig == NULL){ 9852 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9853 } 9854 9855 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 9856 return ERROR_CODE_COMMAND_DISALLOWED; 9857 } 9858 9859 // store ACL Connection Handles 9860 uint8_t i; 9861 for (i=0;i<cig->num_cis;i++){ 9862 // check that all con handles exit 9863 hci_con_handle_t cis_handle = cis_con_handles[i]; 9864 uint8_t j; 9865 bool found = false; 9866 for (j=0;j<cig->num_cis;j++){ 9867 if (cig->cis_con_handles[j] == cis_handle){ 9868 cig->acl_con_handles[j] = acl_con_handles[j]; 9869 found = true; 9870 break; 9871 } 9872 } 9873 if (!found){ 9874 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9875 } 9876 } 9877 9878 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 9879 hci_run(); 9880 9881 return ERROR_CODE_SUCCESS; 9882 } 9883 9884 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_con_handle, hci_iso_stream_state_t state){ 9885 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 9886 if (iso_stream != NULL){ 9887 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9888 } 9889 9890 uint8_t status = hci_iso_stream_create(HCI_ISO_TYPE_CIS, cis_con_handle, 9891 HCI_ISO_GROUP_ID_INVALID, state); 9892 if (status == ERROR_CODE_SUCCESS){ 9893 return status; 9894 } 9895 9896 hci_run(); 9897 return ERROR_CODE_SUCCESS; 9898 } 9899 9900 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 9901 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 9902 } 9903 9904 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 9905 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 9906 } 9907 9908 9909 #endif 9910 #endif /* ENABLE_BLE */ 9911 9912 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 9913 void hci_setup_test_connections_fuzz(void){ 9914 hci_connection_t * conn; 9915 9916 // default address: 66:55:44:33:00:01 9917 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 9918 9919 // setup Controller info 9920 hci_stack->num_cmd_packets = 255; 9921 hci_stack->acl_packets_total_num = 255; 9922 9923 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 9924 addr[5] = 0x01; 9925 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9926 conn->con_handle = addr[5]; 9927 conn->role = HCI_ROLE_SLAVE; 9928 conn->state = RECEIVED_CONNECTION_REQUEST; 9929 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9930 9931 // setup incoming Classic SCO connection with con handle 0x0002 9932 addr[5] = 0x02; 9933 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9934 conn->con_handle = addr[5]; 9935 conn->role = HCI_ROLE_SLAVE; 9936 conn->state = RECEIVED_CONNECTION_REQUEST; 9937 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9938 9939 // setup ready Classic ACL connection with con handle 0x0003 9940 addr[5] = 0x03; 9941 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9942 conn->con_handle = addr[5]; 9943 conn->role = HCI_ROLE_SLAVE; 9944 conn->state = OPEN; 9945 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9946 9947 // setup ready Classic SCO connection with con handle 0x0004 9948 addr[5] = 0x04; 9949 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9950 conn->con_handle = addr[5]; 9951 conn->role = HCI_ROLE_SLAVE; 9952 conn->state = OPEN; 9953 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9954 9955 // setup ready LE ACL connection with con handle 0x005 and public address 9956 addr[5] = 0x05; 9957 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 9958 conn->con_handle = addr[5]; 9959 conn->role = HCI_ROLE_SLAVE; 9960 conn->state = OPEN; 9961 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9962 conn->sm_connection.sm_connection_encrypted = 1; 9963 } 9964 9965 void hci_free_connections_fuzz(void){ 9966 btstack_linked_list_iterator_t it; 9967 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9968 while (btstack_linked_list_iterator_has_next(&it)){ 9969 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9970 btstack_linked_list_iterator_remove(&it); 9971 btstack_memory_hci_connection_free(con); 9972 } 9973 } 9974 void hci_simulate_working_fuzz(void){ 9975 hci_stack->le_scanning_param_update = false; 9976 hci_init_done(); 9977 hci_stack->num_cmd_packets = 255; 9978 } 9979 #endif 9980