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