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