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