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 hci_state_reset(); 4388 } 4389 4390 void hci_deinit(void){ 4391 btstack_run_loop_remove_timer(&hci_stack->timeout); 4392 #ifdef HAVE_MALLOC 4393 if (hci_stack) { 4394 free(hci_stack); 4395 } 4396 #endif 4397 hci_stack = NULL; 4398 4399 #ifdef ENABLE_CLASSIC 4400 disable_l2cap_timeouts = 0; 4401 #endif 4402 } 4403 4404 /** 4405 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4406 */ 4407 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4408 hci_stack->chipset = chipset_driver; 4409 4410 // reset chipset driver - init is also called on power_up 4411 if (hci_stack->chipset && hci_stack->chipset->init){ 4412 hci_stack->chipset->init(hci_stack->config); 4413 } 4414 } 4415 4416 /** 4417 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4418 */ 4419 void hci_set_control(const btstack_control_t *hardware_control){ 4420 // references to used control implementation 4421 hci_stack->control = hardware_control; 4422 // init with transport config 4423 hardware_control->init(hci_stack->config); 4424 } 4425 4426 static void hci_discard_connections(void){ 4427 btstack_linked_list_iterator_t it; 4428 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4429 while (btstack_linked_list_iterator_has_next(&it)){ 4430 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4431 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4432 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4433 hci_shutdown_connection(connection); 4434 } 4435 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4436 while (hci_stack->iso_streams != NULL){ 4437 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4438 } 4439 #endif 4440 } 4441 4442 void hci_close(void){ 4443 4444 #ifdef ENABLE_CLASSIC 4445 // close remote device db 4446 if (hci_stack->link_key_db) { 4447 hci_stack->link_key_db->close(); 4448 } 4449 #endif 4450 4451 hci_discard_connections(); 4452 4453 hci_power_control(HCI_POWER_OFF); 4454 4455 #ifdef HAVE_MALLOC 4456 free(hci_stack); 4457 #endif 4458 hci_stack = NULL; 4459 } 4460 4461 #ifdef HAVE_SCO_TRANSPORT 4462 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4463 hci_stack->sco_transport = sco_transport; 4464 sco_transport->register_packet_handler(&packet_handler); 4465 } 4466 #endif 4467 4468 #ifdef ENABLE_CLASSIC 4469 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4470 // validate ranage and set 4471 if (encryption_key_size < 7) return; 4472 if (encryption_key_size > 16) return; 4473 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4474 } 4475 4476 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4477 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4478 hci_stack->gap_security_mode = security_mode; 4479 return ERROR_CODE_SUCCESS; 4480 } else { 4481 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4482 } 4483 } 4484 4485 gap_security_mode_t gap_get_security_mode(void){ 4486 return hci_stack->gap_security_mode; 4487 } 4488 4489 void gap_set_security_level(gap_security_level_t security_level){ 4490 hci_stack->gap_security_level = security_level; 4491 } 4492 4493 gap_security_level_t gap_get_security_level(void){ 4494 if (hci_stack->gap_secure_connections_only_mode){ 4495 return LEVEL_4; 4496 } 4497 return hci_stack->gap_security_level; 4498 } 4499 4500 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4501 hci_stack->gap_minimal_service_security_level = security_level; 4502 } 4503 4504 void gap_set_secure_connections_only_mode(bool enable){ 4505 hci_stack->gap_secure_connections_only_mode = enable; 4506 } 4507 4508 bool gap_get_secure_connections_only_mode(void){ 4509 return hci_stack->gap_secure_connections_only_mode; 4510 } 4511 #endif 4512 4513 #ifdef ENABLE_CLASSIC 4514 void gap_set_class_of_device(uint32_t class_of_device){ 4515 hci_stack->class_of_device = class_of_device; 4516 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4517 hci_run(); 4518 } 4519 4520 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4521 hci_stack->default_link_policy_settings = default_link_policy_settings; 4522 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4523 hci_run(); 4524 } 4525 4526 void gap_set_allow_role_switch(bool allow_role_switch){ 4527 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4528 } 4529 4530 uint8_t hci_get_allow_role_switch(void){ 4531 return hci_stack->allow_role_switch; 4532 } 4533 4534 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4535 hci_stack->link_supervision_timeout = link_supervision_timeout; 4536 } 4537 4538 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4539 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4540 } 4541 4542 uint16_t hci_automatic_flush_timeout(void){ 4543 return hci_stack->automatic_flush_timeout; 4544 } 4545 4546 void hci_disable_l2cap_timeout_check(void){ 4547 disable_l2cap_timeouts = 1; 4548 } 4549 #endif 4550 4551 #ifndef HAVE_HOST_CONTROLLER_API 4552 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4553 void hci_set_bd_addr(bd_addr_t addr){ 4554 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4555 hci_stack->custom_bd_addr_set = 1; 4556 } 4557 #endif 4558 4559 // State-Module-Driver overview 4560 // state module low-level 4561 // HCI_STATE_OFF off close 4562 // HCI_STATE_INITIALIZING, on open 4563 // HCI_STATE_WORKING, on open 4564 // HCI_STATE_HALTING, on open 4565 // HCI_STATE_SLEEPING, off/sleep close 4566 // HCI_STATE_FALLING_ASLEEP on open 4567 4568 static int hci_power_control_on(void){ 4569 4570 // power on 4571 int err = 0; 4572 if (hci_stack->control && hci_stack->control->on){ 4573 err = (*hci_stack->control->on)(); 4574 } 4575 if (err){ 4576 log_error( "POWER_ON failed"); 4577 hci_emit_hci_open_failed(); 4578 return err; 4579 } 4580 4581 // int chipset driver 4582 if (hci_stack->chipset && hci_stack->chipset->init){ 4583 hci_stack->chipset->init(hci_stack->config); 4584 } 4585 4586 // init transport 4587 if (hci_stack->hci_transport->init){ 4588 hci_stack->hci_transport->init(hci_stack->config); 4589 } 4590 4591 // open transport 4592 err = hci_stack->hci_transport->open(); 4593 if (err){ 4594 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4595 if (hci_stack->control && hci_stack->control->off){ 4596 (*hci_stack->control->off)(); 4597 } 4598 hci_emit_hci_open_failed(); 4599 return err; 4600 } 4601 return 0; 4602 } 4603 4604 static void hci_power_control_off(void){ 4605 4606 log_info("hci_power_control_off"); 4607 4608 // close low-level device 4609 hci_stack->hci_transport->close(); 4610 4611 log_info("hci_power_control_off - hci_transport closed"); 4612 4613 // power off 4614 if (hci_stack->control && hci_stack->control->off){ 4615 (*hci_stack->control->off)(); 4616 } 4617 4618 log_info("hci_power_control_off - control closed"); 4619 4620 hci_stack->state = HCI_STATE_OFF; 4621 } 4622 4623 static void hci_power_control_sleep(void){ 4624 4625 log_info("hci_power_control_sleep"); 4626 4627 #if 0 4628 // don't close serial port during sleep 4629 4630 // close low-level device 4631 hci_stack->hci_transport->close(hci_stack->config); 4632 #endif 4633 4634 // sleep mode 4635 if (hci_stack->control && hci_stack->control->sleep){ 4636 (*hci_stack->control->sleep)(); 4637 } 4638 4639 hci_stack->state = HCI_STATE_SLEEPING; 4640 } 4641 4642 static int hci_power_control_wake(void){ 4643 4644 log_info("hci_power_control_wake"); 4645 4646 // wake on 4647 if (hci_stack->control && hci_stack->control->wake){ 4648 (*hci_stack->control->wake)(); 4649 } 4650 4651 #if 0 4652 // open low-level device 4653 int err = hci_stack->hci_transport->open(hci_stack->config); 4654 if (err){ 4655 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4656 if (hci_stack->control && hci_stack->control->off){ 4657 (*hci_stack->control->off)(); 4658 } 4659 hci_emit_hci_open_failed(); 4660 return err; 4661 } 4662 #endif 4663 4664 return 0; 4665 } 4666 4667 static void hci_power_enter_initializing_state(void){ 4668 // set up state machine 4669 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4670 hci_stack->hci_packet_buffer_reserved = false; 4671 hci_stack->state = HCI_STATE_INITIALIZING; 4672 hci_stack->substate = HCI_INIT_SEND_RESET; 4673 } 4674 4675 static void hci_power_enter_halting_state(void){ 4676 #ifdef ENABLE_BLE 4677 hci_whitelist_free(); 4678 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4679 hci_periodic_advertiser_list_free(); 4680 #endif 4681 #endif 4682 // see hci_run 4683 hci_stack->state = HCI_STATE_HALTING; 4684 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4685 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4686 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4687 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4688 btstack_run_loop_add_timer(&hci_stack->timeout); 4689 } 4690 4691 // returns error 4692 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4693 int err; 4694 switch (power_mode){ 4695 case HCI_POWER_ON: 4696 err = hci_power_control_on(); 4697 if (err != 0) { 4698 log_error("hci_power_control_on() error %d", err); 4699 return err; 4700 } 4701 hci_power_enter_initializing_state(); 4702 break; 4703 case HCI_POWER_OFF: 4704 // do nothing 4705 break; 4706 case HCI_POWER_SLEEP: 4707 // do nothing (with SLEEP == OFF) 4708 break; 4709 default: 4710 btstack_assert(false); 4711 break; 4712 } 4713 return ERROR_CODE_SUCCESS; 4714 } 4715 4716 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 4717 switch (power_mode){ 4718 case HCI_POWER_ON: 4719 // do nothing 4720 break; 4721 case HCI_POWER_OFF: 4722 // no connections yet, just turn it off 4723 hci_power_control_off(); 4724 break; 4725 case HCI_POWER_SLEEP: 4726 // no connections yet, just turn it off 4727 hci_power_control_sleep(); 4728 break; 4729 default: 4730 btstack_assert(false); 4731 break; 4732 } 4733 return ERROR_CODE_SUCCESS; 4734 } 4735 4736 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 4737 switch (power_mode){ 4738 case HCI_POWER_ON: 4739 // do nothing 4740 break; 4741 case HCI_POWER_OFF: 4742 hci_power_enter_halting_state(); 4743 break; 4744 case HCI_POWER_SLEEP: 4745 // see hci_run 4746 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4747 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4748 break; 4749 default: 4750 btstack_assert(false); 4751 break; 4752 } 4753 return ERROR_CODE_SUCCESS; 4754 } 4755 4756 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 4757 switch (power_mode){ 4758 case HCI_POWER_ON: 4759 hci_power_enter_initializing_state(); 4760 break; 4761 case HCI_POWER_OFF: 4762 // do nothing 4763 break; 4764 case HCI_POWER_SLEEP: 4765 // see hci_run 4766 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4767 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4768 break; 4769 default: 4770 btstack_assert(false); 4771 break; 4772 } 4773 return ERROR_CODE_SUCCESS; 4774 } 4775 4776 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 4777 switch (power_mode){ 4778 case HCI_POWER_ON: 4779 hci_power_enter_initializing_state(); 4780 break; 4781 case HCI_POWER_OFF: 4782 hci_power_enter_halting_state(); 4783 break; 4784 case HCI_POWER_SLEEP: 4785 // do nothing 4786 break; 4787 default: 4788 btstack_assert(false); 4789 break; 4790 } 4791 return ERROR_CODE_SUCCESS; 4792 } 4793 4794 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 4795 int err; 4796 switch (power_mode){ 4797 case HCI_POWER_ON: 4798 err = hci_power_control_wake(); 4799 if (err) return err; 4800 hci_power_enter_initializing_state(); 4801 break; 4802 case HCI_POWER_OFF: 4803 hci_power_enter_halting_state(); 4804 break; 4805 case HCI_POWER_SLEEP: 4806 // do nothing 4807 break; 4808 default: 4809 btstack_assert(false); 4810 break; 4811 } 4812 return ERROR_CODE_SUCCESS; 4813 } 4814 4815 int hci_power_control(HCI_POWER_MODE power_mode){ 4816 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 4817 int err = 0; 4818 switch (hci_stack->state){ 4819 case HCI_STATE_OFF: 4820 err = hci_power_control_state_off(power_mode); 4821 break; 4822 case HCI_STATE_INITIALIZING: 4823 err = hci_power_control_state_initializing(power_mode); 4824 break; 4825 case HCI_STATE_WORKING: 4826 err = hci_power_control_state_working(power_mode); 4827 break; 4828 case HCI_STATE_HALTING: 4829 err = hci_power_control_state_halting(power_mode); 4830 break; 4831 case HCI_STATE_FALLING_ASLEEP: 4832 err = hci_power_control_state_falling_asleep(power_mode); 4833 break; 4834 case HCI_STATE_SLEEPING: 4835 err = hci_power_control_state_sleeping(power_mode); 4836 break; 4837 default: 4838 btstack_assert(false); 4839 break; 4840 } 4841 if (err != 0){ 4842 return err; 4843 } 4844 4845 // create internal event 4846 hci_emit_state(); 4847 4848 // trigger next/first action 4849 hci_run(); 4850 4851 return 0; 4852 } 4853 4854 4855 static void hci_halting_run(void) { 4856 4857 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 4858 4859 hci_connection_t *connection; 4860 #ifdef ENABLE_BLE 4861 #ifdef ENABLE_LE_PERIPHERAL 4862 bool stop_advertismenets; 4863 #endif 4864 #endif 4865 4866 switch (hci_stack->substate) { 4867 case HCI_HALTING_CLASSIC_STOP: 4868 #ifdef ENABLE_CLASSIC 4869 if (!hci_can_send_command_packet_now()) return; 4870 4871 if (hci_stack->connectable || hci_stack->discoverable){ 4872 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4873 hci_send_cmd(&hci_write_scan_enable, 0); 4874 return; 4875 } 4876 #endif 4877 /* fall through */ 4878 4879 case HCI_HALTING_LE_ADV_STOP: 4880 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4881 4882 #ifdef ENABLE_BLE 4883 #ifdef ENABLE_LE_PERIPHERAL 4884 if (!hci_can_send_command_packet_now()) return; 4885 4886 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 4887 4888 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4889 if (hci_extended_advertising_supported()){ 4890 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4891 btstack_linked_list_iterator_t it; 4892 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4893 // stop all periodic advertisements and check if an extended set is active 4894 while (btstack_linked_list_iterator_has_next(&it)){ 4895 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 4896 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 4897 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 4898 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 4899 return; 4900 } 4901 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 4902 stop_advertismenets = true; 4903 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4904 } 4905 } 4906 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 4907 if (stop_advertismenets){ 4908 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4909 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 4910 return; 4911 } 4912 } 4913 else 4914 #else /* ENABLE_LE_PERIPHERAL */ 4915 { 4916 if (stop_advertismenets) { 4917 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4918 hci_send_cmd(&hci_le_set_advertise_enable, 0); 4919 return; 4920 } 4921 } 4922 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 4923 #endif /* ENABLE_LE_PERIPHERAL */ 4924 #endif /* ENABLE_BLE */ 4925 4926 /* fall through */ 4927 4928 case HCI_HALTING_LE_SCAN_STOP: 4929 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 4930 if (!hci_can_send_command_packet_now()) return; 4931 4932 #ifdef ENABLE_BLE 4933 #ifdef ENABLE_LE_CENTRAL 4934 if (hci_stack->le_scanning_active){ 4935 hci_le_scan_stop(); 4936 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4937 return; 4938 } 4939 #endif 4940 #endif 4941 4942 /* fall through */ 4943 4944 case HCI_HALTING_DISCONNECT_ALL: 4945 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4946 if (!hci_can_send_command_packet_now()) return; 4947 4948 // close all open connections 4949 connection = (hci_connection_t *) hci_stack->connections; 4950 if (connection) { 4951 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 4952 4953 // check state 4954 if (connection->state == SENT_DISCONNECT) return; 4955 connection->state = SENT_DISCONNECT; 4956 4957 log_info("HCI_STATE_HALTING, connection %p, handle %u", connection, con_handle); 4958 4959 // finally, send the disconnect command 4960 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4961 return; 4962 } 4963 4964 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4965 // stop BIGs and BIG Syncs 4966 if (hci_stack->le_audio_bigs != NULL){ 4967 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 4968 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 4969 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 4970 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 4971 return; 4972 } 4973 if (hci_stack->le_audio_big_syncs != NULL){ 4974 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 4975 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 4976 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 4977 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 4978 return; 4979 } 4980 #endif 4981 4982 btstack_run_loop_remove_timer(&hci_stack->timeout); 4983 4984 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 4985 log_info("HCI_STATE_HALTING: wait 50 ms"); 4986 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 4987 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 4988 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4989 btstack_run_loop_add_timer(&hci_stack->timeout); 4990 break; 4991 4992 case HCI_HALTING_CLOSE: 4993 // close left over connections (that had not been properly closed before) 4994 hci_discard_connections(); 4995 4996 log_info("HCI_STATE_HALTING, calling off"); 4997 4998 // switch mode 4999 hci_power_control_off(); 5000 5001 log_info("HCI_STATE_HALTING, emitting state"); 5002 hci_emit_state(); 5003 log_info("HCI_STATE_HALTING, done"); 5004 break; 5005 5006 case HCI_HALTING_W4_CLOSE_TIMER: 5007 // keep waiting 5008 5009 break; 5010 default: 5011 break; 5012 } 5013 }; 5014 5015 static void hci_falling_asleep_run(void){ 5016 hci_connection_t * connection; 5017 switch(hci_stack->substate) { 5018 case HCI_FALLING_ASLEEP_DISCONNECT: 5019 log_info("HCI_STATE_FALLING_ASLEEP"); 5020 // close all open connections 5021 connection = (hci_connection_t *) hci_stack->connections; 5022 if (connection){ 5023 5024 // send disconnect 5025 if (!hci_can_send_command_packet_now()) return; 5026 5027 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5028 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5029 5030 // send disconnected event right away - causes higher layer connections to get closed, too. 5031 hci_shutdown_connection(connection); 5032 return; 5033 } 5034 5035 if (hci_classic_supported()){ 5036 // disable page and inquiry scan 5037 if (!hci_can_send_command_packet_now()) return; 5038 5039 log_info("HCI_STATE_HALTING, disabling inq scans"); 5040 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5041 5042 // continue in next sub state 5043 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5044 break; 5045 } 5046 5047 /* fall through */ 5048 5049 case HCI_FALLING_ASLEEP_COMPLETE: 5050 log_info("HCI_STATE_HALTING, calling sleep"); 5051 // switch mode 5052 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5053 hci_emit_state(); 5054 break; 5055 5056 default: 5057 break; 5058 } 5059 } 5060 5061 #ifdef ENABLE_CLASSIC 5062 5063 static void hci_update_scan_enable(void){ 5064 // 2 = page scan, 1 = inq scan 5065 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5066 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5067 hci_run(); 5068 } 5069 5070 void gap_discoverable_control(uint8_t enable){ 5071 if (enable) enable = 1; // normalize argument 5072 5073 if (hci_stack->discoverable == enable){ 5074 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5075 return; 5076 } 5077 5078 hci_stack->discoverable = enable; 5079 hci_update_scan_enable(); 5080 } 5081 5082 void gap_connectable_control(uint8_t enable){ 5083 if (enable) enable = 1; // normalize argument 5084 5085 // don't emit event 5086 if (hci_stack->connectable == enable) return; 5087 5088 hci_stack->connectable = enable; 5089 hci_update_scan_enable(); 5090 } 5091 #endif 5092 5093 void gap_local_bd_addr(bd_addr_t address_buffer){ 5094 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5095 } 5096 5097 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5098 static void hci_host_num_completed_packets(void){ 5099 5100 // create packet manually as arrays are not supported and num_commands should not get reduced 5101 hci_reserve_packet_buffer(); 5102 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5103 5104 uint16_t size = 0; 5105 uint16_t num_handles = 0; 5106 packet[size++] = 0x35; 5107 packet[size++] = 0x0c; 5108 size++; // skip param len 5109 size++; // skip num handles 5110 5111 // add { handle, packets } entries 5112 btstack_linked_item_t * it; 5113 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5114 hci_connection_t * connection = (hci_connection_t *) it; 5115 if (connection->num_packets_completed){ 5116 little_endian_store_16(packet, size, connection->con_handle); 5117 size += 2; 5118 little_endian_store_16(packet, size, connection->num_packets_completed); 5119 size += 2; 5120 // 5121 num_handles++; 5122 connection->num_packets_completed = 0; 5123 } 5124 } 5125 5126 packet[2] = size - 3; 5127 packet[3] = num_handles; 5128 5129 hci_stack->host_completed_packets = 0; 5130 5131 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5132 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5133 5134 // release packet buffer for synchronous transport implementations 5135 if (hci_transport_synchronous()){ 5136 hci_release_packet_buffer(); 5137 hci_emit_transport_packet_sent(); 5138 } 5139 } 5140 #endif 5141 5142 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5143 UNUSED(ds); 5144 hci_stack->substate = HCI_HALTING_CLOSE; 5145 // allow packet handlers to defer final shutdown 5146 hci_emit_state(); 5147 hci_run(); 5148 } 5149 5150 static bool hci_run_acl_fragments(void){ 5151 if (hci_stack->acl_fragmentation_total_size > 0u) { 5152 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5153 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5154 if (connection) { 5155 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5156 hci_send_acl_packet_fragments(connection); 5157 return true; 5158 } 5159 } else { 5160 // connection gone -> discard further fragments 5161 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5162 hci_stack->acl_fragmentation_total_size = 0; 5163 hci_stack->acl_fragmentation_pos = 0; 5164 } 5165 } 5166 return false; 5167 } 5168 5169 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5170 static bool hci_run_iso_fragments(void){ 5171 if (hci_stack->iso_fragmentation_total_size > 0u) { 5172 // TODO: flow control 5173 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5174 hci_send_iso_packet_fragments(); 5175 return true; 5176 } 5177 } 5178 return false; 5179 } 5180 #endif 5181 5182 #ifdef ENABLE_CLASSIC 5183 5184 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5185 static bool hci_classic_operation_active(void) { 5186 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5187 return true; 5188 } 5189 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5190 return true; 5191 } 5192 btstack_linked_item_t * it; 5193 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5194 hci_connection_t *connection = (hci_connection_t *) it; 5195 switch (connection->state) { 5196 case SENT_CREATE_CONNECTION: 5197 case SENT_CANCEL_CONNECTION: 5198 case SENT_DISCONNECT: 5199 return true; 5200 default: 5201 break; 5202 } 5203 } 5204 return false; 5205 } 5206 #endif 5207 5208 static bool hci_run_general_gap_classic(void){ 5209 5210 // assert stack is working and classic is active 5211 if (hci_classic_supported() == false) return false; 5212 if (hci_stack->state != HCI_STATE_WORKING) return false; 5213 5214 // decline incoming connections 5215 if (hci_stack->decline_reason){ 5216 uint8_t reason = hci_stack->decline_reason; 5217 hci_stack->decline_reason = 0; 5218 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5219 return true; 5220 } 5221 5222 if (hci_stack->gap_tasks_classic != 0){ 5223 hci_run_gap_tasks_classic(); 5224 return true; 5225 } 5226 5227 // start/stop inquiry 5228 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5229 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5230 if (hci_classic_operation_active() == false) 5231 #endif 5232 { 5233 uint8_t duration = hci_stack->inquiry_state; 5234 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5235 if (hci_stack->inquiry_max_period_length != 0){ 5236 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); 5237 } else { 5238 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5239 } 5240 return true; 5241 } 5242 } 5243 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5244 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5245 hci_send_cmd(&hci_inquiry_cancel); 5246 return true; 5247 } 5248 5249 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5250 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5251 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5252 return true; 5253 } 5254 5255 // remote name request 5256 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5257 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5258 if (hci_classic_operation_active() == false) 5259 #endif 5260 { 5261 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5262 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5263 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5264 return true; 5265 } 5266 } 5267 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5268 // Local OOB data 5269 if (hci_stack->classic_read_local_oob_data){ 5270 hci_stack->classic_read_local_oob_data = false; 5271 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5272 hci_send_cmd(&hci_read_local_extended_oob_data); 5273 } else { 5274 hci_send_cmd(&hci_read_local_oob_data); 5275 } 5276 } 5277 #endif 5278 // pairing 5279 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5280 uint8_t state = hci_stack->gap_pairing_state; 5281 uint8_t pin_code[16]; 5282 switch (state){ 5283 case GAP_PAIRING_STATE_SEND_PIN: 5284 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5285 memset(pin_code, 0, 16); 5286 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5287 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5288 break; 5289 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5290 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5291 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5292 break; 5293 case GAP_PAIRING_STATE_SEND_PASSKEY: 5294 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5295 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5296 break; 5297 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5298 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5299 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5300 break; 5301 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5302 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5303 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5304 break; 5305 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5306 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5307 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5308 break; 5309 default: 5310 break; 5311 } 5312 return true; 5313 } 5314 return false; 5315 } 5316 #endif 5317 5318 #ifdef ENABLE_BLE 5319 5320 #ifdef ENABLE_LE_CENTRAL 5321 static void hci_le_scan_stop(void){ 5322 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5323 if (hci_extended_advertising_supported()) { 5324 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5325 } else 5326 #endif 5327 { 5328 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5329 } 5330 } 5331 #endif 5332 5333 #ifdef ENABLE_LE_PERIPHERAL 5334 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5335 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5336 uint8_t operation = 0; 5337 if (pos == 0){ 5338 // first fragment or complete data 5339 operation |= 1; 5340 } 5341 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5342 // last fragment or complete data 5343 operation |= 2; 5344 } 5345 return operation; 5346 } 5347 #endif 5348 #endif 5349 5350 static bool hci_run_general_gap_le(void){ 5351 5352 btstack_linked_list_iterator_t lit; 5353 5354 // Phase 1: collect what to stop 5355 5356 #ifdef ENABLE_LE_CENTRAL 5357 bool scanning_stop = false; 5358 bool connecting_stop = false; 5359 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5360 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5361 bool periodic_sync_stop = false; 5362 #endif 5363 #endif 5364 #endif 5365 5366 #ifdef ENABLE_LE_PERIPHERAL 5367 bool advertising_stop = false; 5368 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5369 le_advertising_set_t * advertising_stop_set = NULL; 5370 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5371 bool periodic_advertising_stop = false; 5372 #endif 5373 #endif 5374 #endif 5375 5376 // check if own address changes 5377 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5378 5379 // check if whitelist needs modification 5380 bool whitelist_modification_pending = false; 5381 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5382 while (btstack_linked_list_iterator_has_next(&lit)){ 5383 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5384 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5385 whitelist_modification_pending = true; 5386 break; 5387 } 5388 } 5389 5390 // check if resolving list needs modification 5391 bool resolving_list_modification_pending = false; 5392 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5393 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5394 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5395 resolving_list_modification_pending = true; 5396 } 5397 #endif 5398 5399 #ifdef ENABLE_LE_CENTRAL 5400 5401 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5402 // check if periodic advertiser list needs modification 5403 bool periodic_list_modification_pending = false; 5404 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5405 while (btstack_linked_list_iterator_has_next(&lit)){ 5406 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5407 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5408 periodic_list_modification_pending = true; 5409 break; 5410 } 5411 } 5412 #endif 5413 5414 // scanning control 5415 if (hci_stack->le_scanning_active) { 5416 // stop if: 5417 // - parameter change required 5418 // - it's disabled 5419 // - whitelist change required but used for scanning 5420 // - resolving list modified 5421 // - own address changes 5422 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5423 if ((hci_stack->le_scanning_param_update) || 5424 !hci_stack->le_scanning_enabled || 5425 (scanning_uses_whitelist && whitelist_modification_pending) || 5426 resolving_list_modification_pending || 5427 random_address_change){ 5428 5429 scanning_stop = true; 5430 } 5431 } 5432 5433 // connecting control 5434 bool connecting_with_whitelist; 5435 switch (hci_stack->le_connecting_state){ 5436 case LE_CONNECTING_DIRECT: 5437 case LE_CONNECTING_WHITELIST: 5438 // stop connecting if: 5439 // - connecting uses white and whitelist modification pending 5440 // - if it got disabled 5441 // - resolving list modified 5442 // - own address changes 5443 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5444 if ((connecting_with_whitelist && whitelist_modification_pending) || 5445 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5446 resolving_list_modification_pending || 5447 random_address_change) { 5448 5449 connecting_stop = true; 5450 } 5451 break; 5452 default: 5453 break; 5454 } 5455 5456 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5457 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5458 // periodic sync control 5459 bool sync_with_advertiser_list; 5460 switch(hci_stack->le_periodic_sync_state){ 5461 case LE_CONNECTING_DIRECT: 5462 case LE_CONNECTING_WHITELIST: 5463 // stop sync if: 5464 // - sync with advertiser list and advertiser list modification pending 5465 // - if it got disabled 5466 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5467 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5468 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5469 periodic_sync_stop = true; 5470 } 5471 break; 5472 default: 5473 break; 5474 } 5475 #endif 5476 #endif 5477 5478 #endif /* ENABLE_LE_CENTRAL */ 5479 5480 #ifdef ENABLE_LE_PERIPHERAL 5481 // le advertisement control 5482 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5483 // stop if: 5484 // - parameter change required 5485 // - random address used in advertising and changes 5486 // - it's disabled 5487 // - whitelist change required but used for advertisement filter policy 5488 // - resolving list modified 5489 // - own address changes 5490 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5491 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5492 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5493 if (advertising_change || 5494 (advertising_uses_random_address && random_address_change) || 5495 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5496 (advertising_uses_whitelist && whitelist_modification_pending) || 5497 resolving_list_modification_pending || 5498 random_address_change) { 5499 5500 advertising_stop = true; 5501 } 5502 } 5503 5504 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5505 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5506 btstack_linked_list_iterator_t it; 5507 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5508 while (btstack_linked_list_iterator_has_next(&it)){ 5509 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5510 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5511 // stop if: 5512 // - parameter change required 5513 // - random address used in connectable advertising and changes 5514 // - it's disabled 5515 // - whitelist change required but used for advertisement filter policy 5516 // - resolving list modified 5517 // - own address changes 5518 // - advertisement set will be removed 5519 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5520 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5521 bool advertising_uses_random_address = 5522 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5523 advertising_connectable; 5524 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5525 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5526 bool advertising_set_random_address_change = 5527 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5528 bool advertising_set_will_be_removed = 5529 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5530 if (advertising_parameter_change || 5531 (advertising_uses_random_address && advertising_set_random_address_change) || 5532 (advertising_enabled == false) || 5533 (advertising_uses_whitelist && whitelist_modification_pending) || 5534 resolving_list_modification_pending || 5535 advertising_set_will_be_removed) { 5536 5537 advertising_stop = true; 5538 advertising_stop_set = advertising_set; 5539 break; 5540 } 5541 } 5542 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5543 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5544 // stop if: 5545 // - it's disabled 5546 // - parameter change required 5547 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5548 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5549 if ((periodic_enabled == false) || periodic_parameter_change){ 5550 periodic_advertising_stop = true; 5551 advertising_stop_set = advertising_set; 5552 } 5553 } 5554 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5555 } 5556 } 5557 #endif 5558 5559 #endif 5560 5561 5562 // Phase 2: stop everything that should be off during modifications 5563 5564 5565 // 2.1 Outgoing connection 5566 #ifdef ENABLE_LE_CENTRAL 5567 if (connecting_stop){ 5568 hci_send_cmd(&hci_le_create_connection_cancel); 5569 return true; 5570 } 5571 #endif 5572 5573 // 2.2 Scanning 5574 #ifdef ENABLE_LE_CENTRAL 5575 if (scanning_stop){ 5576 hci_stack->le_scanning_active = false; 5577 hci_le_scan_stop(); 5578 return true; 5579 } 5580 5581 // 2.3 Periodic Sync 5582 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5583 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5584 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5585 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5586 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5587 return true; 5588 } 5589 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5590 if (periodic_sync_stop){ 5591 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5592 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5593 return true; 5594 } 5595 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5596 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5597 #endif /* ENABLE_LE_CENTRAL */ 5598 5599 // 2.4 Advertising: legacy, extended, periodic 5600 #ifdef ENABLE_LE_PERIPHERAL 5601 if (advertising_stop){ 5602 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5603 if (hci_extended_advertising_supported()) { 5604 uint8_t advertising_stop_handle; 5605 if (advertising_stop_set != NULL){ 5606 advertising_stop_handle = advertising_stop_set->advertising_handle; 5607 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5608 } else { 5609 advertising_stop_handle = 0; 5610 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5611 } 5612 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5613 const uint16_t durations[] = { 0 }; 5614 const uint16_t max_events[] = { 0 }; 5615 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5616 } else 5617 #endif 5618 { 5619 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5620 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5621 } 5622 return true; 5623 } 5624 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5625 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5626 if (periodic_advertising_stop){ 5627 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5628 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5629 return true; 5630 } 5631 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5632 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5633 #endif /* ENABLE_LE_PERIPHERAL */ 5634 5635 5636 // Phase 3: modify 5637 5638 if (random_address_change){ 5639 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5640 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5641 if (hci_extended_advertising_supported()) { 5642 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5643 } 5644 #endif 5645 { 5646 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5647 } 5648 return true; 5649 } 5650 5651 #ifdef ENABLE_LE_CENTRAL 5652 if (hci_stack->le_scanning_param_update){ 5653 hci_stack->le_scanning_param_update = false; 5654 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5655 if (hci_extended_advertising_supported()){ 5656 // prepare arrays for all PHYs 5657 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5658 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5659 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5660 uint8_t scanning_phys = 1; // LE 1M PHY 5661 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5662 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5663 } else 5664 #endif 5665 { 5666 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5667 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5668 } 5669 return true; 5670 } 5671 #endif 5672 5673 #ifdef ENABLE_LE_PERIPHERAL 5674 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5675 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5676 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5677 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5678 if (hci_extended_advertising_supported()){ 5679 // map advertisment type to advertising event properties 5680 uint16_t adv_event_properties = 0; 5681 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 5682 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 5683 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 5684 } 5685 hci_stack->le_advertising_set_in_current_command = 0; 5686 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5687 0, 5688 adv_event_properties, 5689 hci_stack->le_advertisements_interval_min, 5690 hci_stack->le_advertisements_interval_max, 5691 hci_stack->le_advertisements_channel_map, 5692 hci_stack->le_advertisements_own_addr_type, 5693 hci_stack->le_advertisements_direct_address_type, 5694 hci_stack->le_advertisements_direct_address, 5695 hci_stack->le_advertisements_filter_policy, 5696 0x7f, // tx power: no preference 5697 0x01, // primary adv phy: LE 1M 5698 0, // secondary adv max skip 5699 0, // secondary adv phy 5700 0, // adv sid 5701 0 // scan request notification 5702 ); 5703 } 5704 #endif 5705 { 5706 hci_send_cmd(&hci_le_set_advertising_parameters, 5707 hci_stack->le_advertisements_interval_min, 5708 hci_stack->le_advertisements_interval_max, 5709 hci_stack->le_advertisements_type, 5710 hci_stack->le_advertisements_own_addr_type, 5711 hci_stack->le_advertisements_direct_address_type, 5712 hci_stack->le_advertisements_direct_address, 5713 hci_stack->le_advertisements_channel_map, 5714 hci_stack->le_advertisements_filter_policy); 5715 } 5716 return true; 5717 } 5718 5719 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 5720 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5721 uint8_t adv_data_clean[31]; 5722 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 5723 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 5724 hci_stack->le_advertisements_data_len); 5725 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 5726 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5727 if (hci_extended_advertising_supported()){ 5728 hci_stack->le_advertising_set_in_current_command = 0; 5729 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 5730 } else 5731 #endif 5732 { 5733 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 5734 } 5735 return true; 5736 } 5737 5738 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 5739 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5740 uint8_t scan_data_clean[31]; 5741 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 5742 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 5743 hci_stack->le_scan_response_data_len); 5744 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 5745 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5746 if (hci_extended_advertising_supported()){ 5747 hci_stack->le_advertising_set_in_current_command = 0; 5748 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 5749 } else 5750 #endif 5751 { 5752 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 5753 } 5754 return true; 5755 } 5756 5757 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5758 if (hci_extended_advertising_supported()) { 5759 btstack_linked_list_iterator_t it; 5760 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5761 while (btstack_linked_list_iterator_has_next(&it)){ 5762 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5763 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 5764 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 5765 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5766 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 5767 return true; 5768 } 5769 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 5770 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5771 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 5772 return true; 5773 } 5774 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 5775 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5776 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5777 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5778 advertising_set->advertising_handle, 5779 advertising_set->extended_params.advertising_event_properties, 5780 advertising_set->extended_params.primary_advertising_interval_min, 5781 advertising_set->extended_params.primary_advertising_interval_max, 5782 advertising_set->extended_params.primary_advertising_channel_map, 5783 advertising_set->extended_params.own_address_type, 5784 advertising_set->extended_params.peer_address_type, 5785 advertising_set->extended_params.peer_address, 5786 advertising_set->extended_params.advertising_filter_policy, 5787 advertising_set->extended_params.advertising_tx_power, 5788 advertising_set->extended_params.primary_advertising_phy, 5789 advertising_set->extended_params.secondary_advertising_max_skip, 5790 advertising_set->extended_params.secondary_advertising_phy, 5791 advertising_set->extended_params.advertising_sid, 5792 advertising_set->extended_params.scan_request_notification_enable 5793 ); 5794 return true; 5795 } 5796 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 5797 uint16_t pos = advertising_set->adv_data_pos; 5798 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 5799 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5800 if ((operation & 0x02) != 0){ 5801 // last fragment or complete data 5802 operation |= 2; 5803 advertising_set->adv_data_pos = 0; 5804 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5805 } else { 5806 advertising_set->adv_data_pos += data_to_upload; 5807 } 5808 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5809 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 5810 return true; 5811 } 5812 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 5813 uint16_t pos = advertising_set->scan_data_pos; 5814 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 5815 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5816 if ((operation & 0x02) != 0){ 5817 advertising_set->scan_data_pos = 0; 5818 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5819 } else { 5820 advertising_set->scan_data_pos += data_to_upload; 5821 } 5822 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5823 hci_send_cmd(&hci_le_set_extended_scan_response_data, operation, 0x03, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 5824 return true; 5825 } 5826 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5827 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 5828 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 5829 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5830 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 5831 advertising_set->advertising_handle, 5832 advertising_set->periodic_params.periodic_advertising_interval_min, 5833 advertising_set->periodic_params.periodic_advertising_interval_max, 5834 advertising_set->periodic_params.periodic_advertising_properties); 5835 return true; 5836 } 5837 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 5838 uint16_t pos = advertising_set->periodic_data_pos; 5839 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 5840 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5841 if ((operation & 0x02) != 0){ 5842 // last fragment or complete data 5843 operation |= 2; 5844 advertising_set->periodic_data_pos = 0; 5845 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 5846 } else { 5847 advertising_set->periodic_data_pos += data_to_upload; 5848 } 5849 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5850 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 5851 return true; 5852 } 5853 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5854 } 5855 } 5856 #endif 5857 5858 #endif 5859 5860 #ifdef ENABLE_LE_CENTRAL 5861 // if connect with whitelist was active and is not cancelled yet, wait until next time 5862 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 5863 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5864 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 5865 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 5866 #endif 5867 #endif 5868 5869 // LE Whitelist Management 5870 if (whitelist_modification_pending){ 5871 // add/remove entries 5872 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5873 while (btstack_linked_list_iterator_has_next(&lit)){ 5874 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5875 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5876 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 5877 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 5878 return true; 5879 } 5880 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 5881 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 5882 entry->state |= LE_WHITELIST_ON_CONTROLLER; 5883 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 5884 return true; 5885 } 5886 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 5887 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 5888 btstack_memory_whitelist_entry_free(entry); 5889 } 5890 } 5891 } 5892 5893 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5894 // LE Resolving List Management 5895 if (resolving_list_supported) { 5896 uint16_t i; 5897 switch (hci_stack->le_resolving_list_state) { 5898 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 5899 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 5900 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 5901 return true; 5902 case LE_RESOLVING_LIST_READ_SIZE: 5903 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 5904 hci_send_cmd(&hci_le_read_resolving_list_size); 5905 return true; 5906 case LE_RESOLVING_LIST_SEND_CLEAR: 5907 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 5908 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 5909 sizeof(hci_stack->le_resolving_list_add_entries)); 5910 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 5911 sizeof(hci_stack->le_resolving_list_remove_entries)); 5912 hci_send_cmd(&hci_le_clear_resolving_list); 5913 return true; 5914 case LE_RESOLVING_LIST_REMOVE_ENTRIES: 5915 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5916 uint8_t offset = i >> 3; 5917 uint8_t mask = 1 << (i & 7); 5918 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 5919 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 5920 bd_addr_t peer_identity_addreses; 5921 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5922 sm_key_t peer_irk; 5923 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5924 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5925 5926 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 5927 // trigger whitelist entry 'update' (work around for controller bug) 5928 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5929 while (btstack_linked_list_iterator_has_next(&lit)) { 5930 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 5931 if (entry->address_type != peer_identity_addr_type) continue; 5932 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 5933 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 5934 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 5935 } 5936 #endif 5937 5938 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 5939 peer_identity_addreses); 5940 return true; 5941 } 5942 5943 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_ADD_ENTRIES; 5944 5945 /* fall through */ 5946 5947 case LE_RESOLVING_LIST_ADD_ENTRIES: 5948 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5949 uint8_t offset = i >> 3; 5950 uint8_t mask = 1 << (i & 7); 5951 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 5952 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 5953 bd_addr_t peer_identity_addreses; 5954 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5955 sm_key_t peer_irk; 5956 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5957 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5958 const uint8_t *local_irk = gap_get_persistent_irk(); 5959 // command uses format specifier 'P' that stores 16-byte value without flip 5960 uint8_t local_irk_flipped[16]; 5961 uint8_t peer_irk_flipped[16]; 5962 reverse_128(local_irk, local_irk_flipped); 5963 reverse_128(peer_irk, peer_irk_flipped); 5964 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 5965 peer_irk_flipped, local_irk_flipped); 5966 return true; 5967 } 5968 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5969 break; 5970 5971 default: 5972 break; 5973 } 5974 } 5975 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5976 #endif 5977 5978 #ifdef ENABLE_LE_CENTRAL 5979 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5980 // LE Whitelist Management 5981 if (periodic_list_modification_pending){ 5982 // add/remove entries 5983 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5984 while (btstack_linked_list_iterator_has_next(&lit)){ 5985 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5986 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 5987 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5988 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 5989 return true; 5990 } 5991 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 5992 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5993 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 5994 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 5995 return true; 5996 } 5997 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 5998 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 5999 btstack_memory_periodic_advertiser_list_entry_free(entry); 6000 } 6001 } 6002 } 6003 #endif 6004 #endif 6005 6006 // post-pone all actions until stack is fully working 6007 if (hci_stack->state != HCI_STATE_WORKING) return false; 6008 6009 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6010 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6011 6012 // Phase 4: restore state 6013 6014 #ifdef ENABLE_LE_CENTRAL 6015 // re-start scanning 6016 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6017 hci_stack->le_scanning_active = true; 6018 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6019 if (hci_extended_advertising_supported()){ 6020 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, 0, 0, 0); 6021 } else 6022 #endif 6023 { 6024 hci_send_cmd(&hci_le_set_scan_enable, 1, 0); 6025 } 6026 return true; 6027 } 6028 #endif 6029 6030 #ifdef ENABLE_LE_CENTRAL 6031 // re-start connecting 6032 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6033 bd_addr_t null_addr; 6034 memset(null_addr, 0, 6); 6035 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6036 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6037 hci_send_cmd(&hci_le_create_connection, 6038 hci_stack->le_connection_scan_interval, // scan interval: 60 ms 6039 hci_stack->le_connection_scan_window, // scan interval: 30 ms 6040 1, // use whitelist 6041 0, // peer address type 6042 null_addr, // peer bd addr 6043 hci_stack->le_connection_own_addr_type, // our addr type: 6044 hci_stack->le_connection_interval_min, // conn interval min 6045 hci_stack->le_connection_interval_max, // conn interval max 6046 hci_stack->le_connection_latency, // conn latency 6047 hci_stack->le_supervision_timeout, // conn latency 6048 hci_stack->le_minimum_ce_length, // min ce length 6049 hci_stack->le_maximum_ce_length // max ce length 6050 ); 6051 return true; 6052 } 6053 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6054 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6055 switch(hci_stack->le_periodic_sync_request){ 6056 case LE_CONNECTING_DIRECT: 6057 case LE_CONNECTING_WHITELIST: 6058 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6059 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6060 hci_stack->le_periodic_sync_options, 6061 hci_stack->le_periodic_sync_advertising_sid, 6062 hci_stack->le_periodic_sync_advertiser_address_type, 6063 hci_stack->le_periodic_sync_advertiser_address, 6064 hci_stack->le_periodic_sync_skip, 6065 hci_stack->le_periodic_sync_timeout, 6066 hci_stack->le_periodic_sync_cte_type); 6067 return true; 6068 default: 6069 break; 6070 } 6071 } 6072 #endif 6073 #endif 6074 6075 #ifdef ENABLE_LE_PERIPHERAL 6076 // re-start advertising 6077 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6078 // check if advertisements should be enabled given 6079 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6080 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6081 6082 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6083 if (hci_extended_advertising_supported()){ 6084 const uint8_t advertising_handles[] = { 0 }; 6085 const uint16_t durations[] = { 0 }; 6086 const uint16_t max_events[] = { 0 }; 6087 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6088 } else 6089 #endif 6090 { 6091 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6092 } 6093 return true; 6094 } 6095 6096 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6097 if (hci_extended_advertising_supported()) { 6098 btstack_linked_list_iterator_t it; 6099 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6100 while (btstack_linked_list_iterator_has_next(&it)) { 6101 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6102 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6103 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6104 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6105 const uint16_t durations[] = { advertising_set->enable_timeout }; 6106 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6107 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6108 return true; 6109 } 6110 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6111 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6112 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6113 uint8_t enable = 1; 6114 if (advertising_set->periodic_include_adi){ 6115 enable |= 2; 6116 } 6117 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6118 return true; 6119 } 6120 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6121 } 6122 } 6123 #endif 6124 #endif 6125 6126 return false; 6127 } 6128 6129 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6130 static bool hci_run_iso_tasks(void){ 6131 btstack_linked_list_iterator_t it; 6132 6133 // BIG 6134 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6135 while (btstack_linked_list_iterator_has_next(&it)){ 6136 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6137 switch (big->state){ 6138 case LE_AUDIO_BIG_STATE_CREATE: 6139 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6140 hci_send_cmd(&hci_le_create_big, 6141 big->params->big_handle, 6142 big->params->advertising_handle, 6143 big->params->num_bis, 6144 big->params->sdu_interval_us, 6145 big->params->max_sdu, 6146 big->params->max_transport_latency_ms, 6147 big->params->rtn, 6148 big->params->phy, 6149 big->params->packing, 6150 big->params->framing, 6151 big->params->encryption, 6152 big->params->broadcast_code); 6153 return true; 6154 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6155 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6156 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); 6157 return true; 6158 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6159 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6160 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6161 break; 6162 case LE_AUDIO_BIG_STATE_TERMINATE: 6163 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6164 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6165 return true; 6166 default: 6167 break; 6168 } 6169 } 6170 6171 // BIG Sync 6172 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6173 while (btstack_linked_list_iterator_has_next(&it)){ 6174 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6175 switch (big_sync->state){ 6176 case LE_AUDIO_BIG_STATE_CREATE: 6177 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6178 hci_send_cmd(&hci_le_big_create_sync, 6179 big_sync->params->big_handle, 6180 big_sync->params->sync_handle, 6181 big_sync->params->encryption, 6182 big_sync->params->broadcast_code, 6183 big_sync->params->mse, 6184 big_sync->params->big_sync_timeout_10ms, 6185 big_sync->params->num_bis, 6186 big_sync->params->bis_indices); 6187 return true; 6188 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6189 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6190 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); 6191 return true; 6192 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6193 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6194 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6195 break; 6196 case LE_AUDIO_BIG_STATE_TERMINATE: 6197 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6198 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6199 return true; 6200 default: 6201 break; 6202 } 6203 } 6204 6205 return false; 6206 } 6207 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6208 #endif 6209 6210 static bool hci_run_general_pending_commands(void){ 6211 btstack_linked_item_t * it; 6212 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6213 hci_connection_t * connection = (hci_connection_t *) it; 6214 6215 switch(connection->state){ 6216 case SEND_CREATE_CONNECTION: 6217 switch(connection->address_type){ 6218 #ifdef ENABLE_CLASSIC 6219 case BD_ADDR_TYPE_ACL: 6220 log_info("sending hci_create_connection"); 6221 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6222 break; 6223 #endif 6224 default: 6225 #ifdef ENABLE_BLE 6226 #ifdef ENABLE_LE_CENTRAL 6227 log_info("sending hci_le_create_connection"); 6228 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6229 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6230 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6231 if (hci_extended_advertising_supported()) { 6232 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 6233 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 6234 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 6235 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 6236 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 6237 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 6238 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 6239 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 6240 hci_send_cmd(&hci_le_extended_create_connection, 6241 0, // don't use whitelist 6242 hci_stack->le_connection_own_addr_type, // our addr type: 6243 connection->address_type, // peer address type 6244 connection->address, // peer bd addr 6245 1, // initiating PHY - 1M 6246 le_connection_scan_interval, // conn scan interval 6247 le_connection_scan_window, // conn scan windows 6248 le_connection_interval_min, // conn interval min 6249 le_connection_interval_max, // conn interval max 6250 le_connection_latency, // conn latency 6251 le_supervision_timeout, // conn latency 6252 le_minimum_ce_length, // min ce length 6253 le_maximum_ce_length // max ce length 6254 ); } 6255 else 6256 #endif 6257 { 6258 hci_send_cmd(&hci_le_create_connection, 6259 hci_stack->le_connection_scan_interval, // conn scan interval 6260 hci_stack->le_connection_scan_window, // conn scan windows 6261 0, // don't use whitelist 6262 connection->address_type, // peer address type 6263 connection->address, // peer bd addr 6264 hci_stack->le_connection_own_addr_type, // our addr type: 6265 hci_stack->le_connection_interval_min, // conn interval min 6266 hci_stack->le_connection_interval_max, // conn interval max 6267 hci_stack->le_connection_latency, // conn latency 6268 hci_stack->le_supervision_timeout, // conn latency 6269 hci_stack->le_minimum_ce_length, // min ce length 6270 hci_stack->le_maximum_ce_length // max ce length 6271 ); 6272 } 6273 connection->state = SENT_CREATE_CONNECTION; 6274 #endif 6275 #endif 6276 break; 6277 } 6278 return true; 6279 6280 #ifdef ENABLE_CLASSIC 6281 case RECEIVED_CONNECTION_REQUEST: 6282 connection->role = HCI_ROLE_SLAVE; 6283 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6284 log_info("sending hci_accept_connection_request"); 6285 connection->state = ACCEPTED_CONNECTION_REQUEST; 6286 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6287 return true; 6288 } 6289 break; 6290 #endif 6291 6292 #ifdef ENABLE_BLE 6293 #ifdef ENABLE_LE_CENTRAL 6294 case SEND_CANCEL_CONNECTION: 6295 connection->state = SENT_CANCEL_CONNECTION; 6296 hci_send_cmd(&hci_le_create_connection_cancel); 6297 return true; 6298 #endif 6299 #endif 6300 case SEND_DISCONNECT: 6301 connection->state = SENT_DISCONNECT; 6302 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6303 return true; 6304 6305 default: 6306 break; 6307 } 6308 6309 // no further commands if connection is about to get shut down 6310 if (connection->state == SENT_DISCONNECT) continue; 6311 6312 #ifdef ENABLE_CLASSIC 6313 6314 // Handling link key request requires remote supported features 6315 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6316 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6317 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6318 6319 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6320 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6321 if (have_link_key && security_level_sufficient){ 6322 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6323 } else { 6324 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6325 } 6326 return true; 6327 } 6328 6329 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6330 log_info("denying to pin request"); 6331 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6332 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6333 return true; 6334 } 6335 6336 // security assessment requires remote features 6337 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6338 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6339 hci_ssp_assess_security_on_io_cap_request(connection); 6340 // 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 6341 } 6342 6343 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6344 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6345 // set authentication requirements: 6346 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6347 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6348 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6349 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6350 authreq |= 1; 6351 } 6352 bool bonding = hci_stack->bondable; 6353 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6354 // if we have received IO Cap Response, we're in responder role 6355 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6356 if (bonding && !remote_bonding){ 6357 log_info("Remote not bonding, dropping local flag"); 6358 bonding = false; 6359 } 6360 } 6361 if (bonding){ 6362 if (connection->bonding_flags & BONDING_DEDICATED){ 6363 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6364 } else { 6365 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6366 } 6367 } 6368 uint8_t have_oob_data = 0; 6369 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6370 if (connection->classic_oob_c_192 != NULL){ 6371 have_oob_data |= 1; 6372 } 6373 if (connection->classic_oob_c_256 != NULL){ 6374 have_oob_data |= 2; 6375 } 6376 #endif 6377 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6378 return true; 6379 } 6380 6381 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6382 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6383 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6384 return true; 6385 } 6386 6387 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6388 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6389 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6390 const uint8_t zero[16] = { 0 }; 6391 const uint8_t * r_192 = zero; 6392 const uint8_t * c_192 = zero; 6393 const uint8_t * r_256 = zero; 6394 const uint8_t * c_256 = zero; 6395 // verify P-256 OOB 6396 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6397 c_256 = connection->classic_oob_c_256; 6398 if (connection->classic_oob_r_256 != NULL) { 6399 r_256 = connection->classic_oob_r_256; 6400 } 6401 } 6402 // verify P-192 OOB 6403 if ((connection->classic_oob_c_192 != NULL)) { 6404 c_192 = connection->classic_oob_c_192; 6405 if (connection->classic_oob_r_192 != NULL) { 6406 r_192 = connection->classic_oob_r_192; 6407 } 6408 } 6409 6410 // assess security 6411 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6412 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6413 if (need_level_4 && !can_reach_level_4){ 6414 log_info("Level 4 required, but not possible -> abort"); 6415 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6416 // send oob negative reply 6417 c_256 = NULL; 6418 c_192 = NULL; 6419 } 6420 6421 // Reply 6422 if (c_256 != zero) { 6423 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6424 } else if (c_192 != zero){ 6425 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6426 } else { 6427 hci_stack->classic_oob_con_handle = connection->con_handle; 6428 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6429 } 6430 return true; 6431 } 6432 #endif 6433 6434 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6435 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6436 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6437 return true; 6438 } 6439 6440 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6441 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6442 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6443 return true; 6444 } 6445 6446 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6447 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6448 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6449 return true; 6450 } 6451 6452 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6453 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6454 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6455 connection->state = SENT_DISCONNECT; 6456 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6457 return true; 6458 } 6459 6460 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6461 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6462 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6463 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6464 return true; 6465 } 6466 6467 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6468 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6469 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6470 return true; 6471 } 6472 6473 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 6474 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 6475 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 6476 return true; 6477 } 6478 6479 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 6480 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6481 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 6482 return true; 6483 } 6484 6485 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 6486 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 6487 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 6488 return true; 6489 } 6490 6491 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 6492 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 6493 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 6494 return true; 6495 } 6496 #endif 6497 6498 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 6499 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 6500 #ifdef ENABLE_CLASSIC 6501 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 6502 #endif 6503 if (connection->state != SENT_DISCONNECT){ 6504 connection->state = SENT_DISCONNECT; 6505 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 6506 return true; 6507 } 6508 } 6509 6510 #ifdef ENABLE_CLASSIC 6511 uint16_t sniff_min_interval; 6512 switch (connection->sniff_min_interval){ 6513 case 0: 6514 break; 6515 case 0xffff: 6516 connection->sniff_min_interval = 0; 6517 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 6518 return true; 6519 default: 6520 sniff_min_interval = connection->sniff_min_interval; 6521 connection->sniff_min_interval = 0; 6522 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 6523 return true; 6524 } 6525 6526 if (connection->sniff_subrating_max_latency != 0xffff){ 6527 uint16_t max_latency = connection->sniff_subrating_max_latency; 6528 connection->sniff_subrating_max_latency = 0; 6529 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 6530 return true; 6531 } 6532 6533 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 6534 uint8_t service_type = (uint8_t) connection->qos_service_type; 6535 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 6536 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); 6537 return true; 6538 } 6539 6540 if (connection->request_role != HCI_ROLE_INVALID){ 6541 hci_role_t role = connection->request_role; 6542 connection->request_role = HCI_ROLE_INVALID; 6543 hci_send_cmd(&hci_switch_role_command, connection->address, role); 6544 return true; 6545 } 6546 #endif 6547 6548 if (connection->gap_connection_tasks != 0){ 6549 #ifdef ENABLE_CLASSIC 6550 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6551 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6552 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6553 return true; 6554 } 6555 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6556 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6557 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6558 return true; 6559 } 6560 #endif 6561 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6562 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6563 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6564 return true; 6565 } 6566 } 6567 6568 #ifdef ENABLE_BLE 6569 switch (connection->le_con_parameter_update_state){ 6570 // response to L2CAP CON PARAMETER UPDATE REQUEST 6571 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 6572 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6573 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 6574 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6575 0x0000, 0xffff); 6576 return true; 6577 case CON_PARAMETER_UPDATE_REPLY: 6578 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6579 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 6580 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6581 0x0000, 0xffff); 6582 return true; 6583 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 6584 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6585 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 6586 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 6587 return true; 6588 default: 6589 break; 6590 } 6591 if (connection->le_phy_update_all_phys != 0xffu){ 6592 uint8_t all_phys = connection->le_phy_update_all_phys; 6593 connection->le_phy_update_all_phys = 0xff; 6594 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); 6595 return true; 6596 } 6597 #endif 6598 } 6599 return false; 6600 } 6601 6602 static void hci_run(void){ 6603 6604 // stack state sub statemachines 6605 switch (hci_stack->state) { 6606 case HCI_STATE_INITIALIZING: 6607 hci_initializing_run(); 6608 break; 6609 case HCI_STATE_HALTING: 6610 hci_halting_run(); 6611 break; 6612 case HCI_STATE_FALLING_ASLEEP: 6613 hci_falling_asleep_run(); 6614 break; 6615 default: 6616 break; 6617 } 6618 6619 // allow to run after initialization to working transition 6620 if (hci_stack->state != HCI_STATE_WORKING){ 6621 return; 6622 } 6623 6624 bool done; 6625 6626 // send continuation fragments first, as they block the prepared packet buffer 6627 done = hci_run_acl_fragments(); 6628 if (done) return; 6629 6630 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6631 done = hci_run_iso_fragments(); 6632 if (done) return; 6633 #endif 6634 6635 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 6636 // send host num completed packets next as they don't require num_cmd_packets > 0 6637 if (!hci_can_send_comand_packet_transport()) return; 6638 if (hci_stack->host_completed_packets){ 6639 hci_host_num_completed_packets(); 6640 return; 6641 } 6642 #endif 6643 6644 if (!hci_can_send_command_packet_now()) return; 6645 6646 // global/non-connection oriented commands 6647 6648 6649 #ifdef ENABLE_CLASSIC 6650 // general gap classic 6651 done = hci_run_general_gap_classic(); 6652 if (done) return; 6653 #endif 6654 6655 #ifdef ENABLE_BLE 6656 // general gap le 6657 done = hci_run_general_gap_le(); 6658 if (done) return; 6659 6660 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6661 // ISO related tasks, e.g. BIG create/terminate/sync 6662 done = hci_run_iso_tasks(); 6663 if (done) return; 6664 #endif 6665 #endif 6666 6667 // send pending HCI commands 6668 hci_run_general_pending_commands(); 6669 } 6670 6671 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 6672 // house-keeping 6673 6674 #ifdef ENABLE_CLASSIC 6675 bd_addr_t addr; 6676 hci_connection_t * conn; 6677 #endif 6678 #ifdef ENABLE_LE_CENTRAL 6679 uint8_t initiator_filter_policy; 6680 #endif 6681 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6682 uint8_t i; 6683 uint8_t num_cis; 6684 hci_con_handle_t cis_handle; 6685 uint8_t status; 6686 #endif 6687 6688 uint16_t opcode = little_endian_read_16(packet, 0); 6689 switch (opcode) { 6690 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 6691 hci_stack->loopback_mode = packet[3]; 6692 break; 6693 6694 #ifdef ENABLE_CLASSIC 6695 case HCI_OPCODE_HCI_CREATE_CONNECTION: 6696 reverse_bd_addr(&packet[3], addr); 6697 log_info("Create_connection to %s", bd_addr_to_str(addr)); 6698 6699 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 6700 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 6701 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 6702 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 6703 } 6704 6705 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6706 if (!conn) { 6707 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6708 if (!conn) { 6709 // notify client that alloc failed 6710 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 6711 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 6712 } 6713 conn->state = SEND_CREATE_CONNECTION; 6714 conn->role = HCI_ROLE_MASTER; 6715 } 6716 6717 log_info("conn state %u", conn->state); 6718 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 6719 switch (conn->state) { 6720 // if connection active exists 6721 case OPEN: 6722 // and OPEN, emit connection complete command 6723 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 6724 // packet not sent to controller 6725 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6726 case RECEIVED_DISCONNECTION_COMPLETE: 6727 // create connection triggered in disconnect complete event, let's do it now 6728 break; 6729 case SEND_CREATE_CONNECTION: 6730 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 6731 if (hci_classic_operation_active()){ 6732 return ERROR_CODE_SUCCESS; 6733 } 6734 #endif 6735 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 6736 break; 6737 default: 6738 // otherwise, just ignore as it is already in the open process 6739 // packet not sent to controller 6740 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6741 } 6742 conn->state = SENT_CREATE_CONNECTION; 6743 6744 // track outgoing connection 6745 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 6746 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 6747 break; 6748 6749 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 6750 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 6751 // setup_synchronous_connection? Voice setting at offset 22 6752 // TODO: compare to current setting if sco connection already active 6753 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 6754 break; 6755 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 6756 // accept_synchronous_connection? Voice setting at offset 18 6757 // TODO: compare to current setting if sco connection already active 6758 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 6759 // track outgoing connection 6760 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 6761 reverse_bd_addr(&packet[3], hci_stack->outgoing_addr); 6762 break; 6763 #endif 6764 #endif 6765 6766 #ifdef ENABLE_BLE 6767 #ifdef ENABLE_LE_CENTRAL 6768 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 6769 // white list used? 6770 initiator_filter_policy = packet[7]; 6771 switch (initiator_filter_policy) { 6772 case 0: 6773 // whitelist not used 6774 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 6775 break; 6776 case 1: 6777 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 6778 break; 6779 default: 6780 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 6781 break; 6782 } 6783 // track outgoing connection 6784 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer addres type 6785 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 6786 break; 6787 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 6788 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 6789 break; 6790 #endif 6791 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6792 #ifdef ENABLE_LE_CENTRAL 6793 case HCI_OPCODE_HCI_LE_CREATE_CIS: 6794 status = ERROR_CODE_SUCCESS; 6795 num_cis = packet[3]; 6796 // setup hci_iso_streams 6797 for (i=0;i<num_cis;i++){ 6798 cis_handle = (hci_con_handle_t) little_endian_read_16(packet, 4 + (4 * i)); 6799 status = hci_iso_stream_create(cis_handle, 0xff); 6800 if (status != ERROR_CODE_SUCCESS) { 6801 break; 6802 } 6803 } 6804 // free structs on error 6805 if (status != ERROR_CODE_SUCCESS){ 6806 hci_iso_stream_requested_finalize(0xff); 6807 return status; 6808 } 6809 break; 6810 #endif /* ENABLE_LE_CENTRAL */ 6811 #ifdef ENABLE_LE_PERIPHERAL 6812 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 6813 cis_handle = (hci_con_handle_t) little_endian_read_16(packet, 3); 6814 status = hci_iso_stream_create(cis_handle, 0xff); 6815 if (status != ERROR_CODE_SUCCESS){ 6816 return status; 6817 } 6818 break; 6819 #endif /* ENABLE_LE_PERIPHERAL */ 6820 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6821 #endif /* ENABLE_BLE */ 6822 default: 6823 break; 6824 } 6825 6826 hci_stack->num_cmd_packets--; 6827 6828 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 6829 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 6830 if (err != 0){ 6831 return ERROR_CODE_HARDWARE_FAILURE; 6832 } 6833 return ERROR_CODE_SUCCESS; 6834 } 6835 6836 // disconnect because of security block 6837 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 6838 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6839 if (!connection) return; 6840 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 6841 } 6842 6843 6844 // Configure Secure Simple Pairing 6845 6846 #ifdef ENABLE_CLASSIC 6847 6848 // enable will enable SSP during init 6849 void gap_ssp_set_enable(int enable){ 6850 hci_stack->ssp_enable = enable; 6851 } 6852 6853 static int hci_local_ssp_activated(void){ 6854 return gap_ssp_supported() && hci_stack->ssp_enable; 6855 } 6856 6857 // if set, BTstack will respond to io capability request using authentication requirement 6858 void gap_ssp_set_io_capability(int io_capability){ 6859 hci_stack->ssp_io_capability = io_capability; 6860 } 6861 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 6862 hci_stack->ssp_authentication_requirement = authentication_requirement; 6863 } 6864 6865 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 6866 void gap_ssp_set_auto_accept(int auto_accept){ 6867 hci_stack->ssp_auto_accept = auto_accept; 6868 } 6869 6870 void gap_secure_connections_enable(bool enable){ 6871 hci_stack->secure_connections_enable = enable; 6872 } 6873 bool gap_secure_connections_active(void){ 6874 return hci_stack->secure_connections_active; 6875 } 6876 6877 #endif 6878 6879 // va_list part of hci_send_cmd 6880 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 6881 if (!hci_can_send_command_packet_now()){ 6882 log_error("hci_send_cmd called but cannot send packet now"); 6883 return ERROR_CODE_COMMAND_DISALLOWED; 6884 } 6885 6886 // for HCI INITIALIZATION 6887 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 6888 hci_stack->last_cmd_opcode = cmd->opcode; 6889 6890 hci_reserve_packet_buffer(); 6891 uint8_t * packet = hci_stack->hci_packet_buffer; 6892 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 6893 uint8_t status = hci_send_cmd_packet(packet, size); 6894 6895 // release packet buffer on error or for synchronous transport implementations 6896 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 6897 hci_release_packet_buffer(); 6898 hci_emit_transport_packet_sent(); 6899 } 6900 6901 return status; 6902 } 6903 6904 /** 6905 * pre: numcmds >= 0 - it's allowed to send a command to the controller 6906 */ 6907 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 6908 va_list argptr; 6909 va_start(argptr, cmd); 6910 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 6911 va_end(argptr); 6912 return status; 6913 } 6914 6915 // Create various non-HCI events. 6916 // TODO: generalize, use table similar to hci_create_command 6917 6918 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 6919 // dump packet 6920 if (dump) { 6921 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 6922 } 6923 6924 // dispatch to all event handlers 6925 btstack_linked_list_iterator_t it; 6926 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 6927 while (btstack_linked_list_iterator_has_next(&it)){ 6928 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 6929 entry->callback(HCI_EVENT_PACKET, 0, event, size); 6930 } 6931 } 6932 6933 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 6934 if (!hci_stack->acl_packet_handler) return; 6935 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 6936 } 6937 6938 #ifdef ENABLE_CLASSIC 6939 static void hci_notify_if_sco_can_send_now(void){ 6940 // notify SCO sender if waiting 6941 if (!hci_stack->sco_waiting_for_can_send_now) return; 6942 if (hci_can_send_sco_packet_now()){ 6943 hci_stack->sco_waiting_for_can_send_now = 0; 6944 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 6945 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 6946 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 6947 } 6948 } 6949 6950 // parsing end emitting has been merged to reduce code size 6951 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 6952 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 6953 6954 uint8_t * eir_data; 6955 ad_context_t context; 6956 const uint8_t * name; 6957 uint8_t name_len; 6958 6959 if (size < 3) return; 6960 6961 int event_type = hci_event_packet_get_type(packet); 6962 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 6963 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 6964 6965 switch (event_type){ 6966 case HCI_EVENT_INQUIRY_RESULT: 6967 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6968 if (size != (3 + (num_responses * 14))) return; 6969 break; 6970 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 6971 if (size != 257) return; 6972 if (num_responses != 1) return; 6973 break; 6974 default: 6975 return; 6976 } 6977 6978 // event[1] is set at the end 6979 int i; 6980 for (i=0; i<num_responses;i++){ 6981 memset(event, 0, sizeof(event)); 6982 event[0] = GAP_EVENT_INQUIRY_RESULT; 6983 uint8_t event_size = 27; // if name is not set by EIR 6984 6985 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 6986 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 6987 (void)memcpy(&event[9], 6988 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 6989 3); // class of device 6990 (void)memcpy(&event[12], 6991 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 6992 2); // clock offset 6993 6994 switch (event_type){ 6995 case HCI_EVENT_INQUIRY_RESULT: 6996 // 14,15,16,17 = 0, size 18 6997 break; 6998 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6999 event[14] = 1; 7000 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7001 // 16,17 = 0, size 18 7002 break; 7003 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7004 event[14] = 1; 7005 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7006 // EIR packets only contain a single inquiry response 7007 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7008 name = NULL; 7009 // Iterate over EIR data 7010 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7011 uint8_t data_type = ad_iterator_get_data_type(&context); 7012 uint8_t data_size = ad_iterator_get_data_len(&context); 7013 const uint8_t * data = ad_iterator_get_data(&context); 7014 // Prefer Complete Local Name over Shortened Local Name 7015 switch (data_type){ 7016 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7017 if (name) continue; 7018 /* fall through */ 7019 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7020 name = data; 7021 name_len = data_size; 7022 break; 7023 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7024 if (data_size != 8) break; 7025 event[16] = 1; 7026 memcpy(&event[17], data, 8); 7027 break; 7028 default: 7029 break; 7030 } 7031 } 7032 if (name){ 7033 event[25] = 1; 7034 // truncate name if needed 7035 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7036 event[26] = len; 7037 (void)memcpy(&event[27], name, len); 7038 event_size += len; 7039 } 7040 break; 7041 default: 7042 return; 7043 } 7044 event[1] = event_size - 2; 7045 hci_emit_event(event, event_size, 1); 7046 } 7047 } 7048 #endif 7049 7050 void hci_emit_state(void){ 7051 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7052 uint8_t event[3]; 7053 event[0] = BTSTACK_EVENT_STATE; 7054 event[1] = sizeof(event) - 2u; 7055 event[2] = hci_stack->state; 7056 hci_emit_event(event, sizeof(event), 1); 7057 } 7058 7059 #ifdef ENABLE_CLASSIC 7060 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7061 uint8_t event[13]; 7062 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7063 event[1] = sizeof(event) - 2; 7064 event[2] = status; 7065 little_endian_store_16(event, 3, con_handle); 7066 reverse_bd_addr(address, &event[5]); 7067 event[11] = 1; // ACL connection 7068 event[12] = 0; // encryption disabled 7069 hci_emit_event(event, sizeof(event), 1); 7070 } 7071 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7072 if (disable_l2cap_timeouts) return; 7073 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7074 uint8_t event[4]; 7075 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7076 event[1] = sizeof(event) - 2; 7077 little_endian_store_16(event, 2, conn->con_handle); 7078 hci_emit_event(event, sizeof(event), 1); 7079 } 7080 #endif 7081 7082 #ifdef ENABLE_BLE 7083 #ifdef ENABLE_LE_CENTRAL 7084 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){ 7085 uint8_t event[21]; 7086 event[0] = HCI_EVENT_LE_META; 7087 event[1] = sizeof(event) - 2u; 7088 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7089 event[3] = status; 7090 little_endian_store_16(event, 4, con_handle); 7091 event[6] = 0; // TODO: role 7092 event[7] = address_type; 7093 reverse_bd_addr(address, &event[8]); 7094 little_endian_store_16(event, 14, 0); // interval 7095 little_endian_store_16(event, 16, 0); // latency 7096 little_endian_store_16(event, 18, 0); // supervision timeout 7097 event[20] = 0; // master clock accuracy 7098 hci_emit_event(event, sizeof(event), 1); 7099 } 7100 #endif 7101 #endif 7102 7103 static void hci_emit_transport_packet_sent(void){ 7104 // notify upper stack that it might be possible to send again 7105 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7106 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7107 } 7108 7109 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7110 uint8_t event[6]; 7111 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7112 event[1] = sizeof(event) - 2u; 7113 event[2] = 0; // status = OK 7114 little_endian_store_16(event, 3, con_handle); 7115 event[5] = reason; 7116 hci_emit_event(event, sizeof(event), 1); 7117 } 7118 7119 static void hci_emit_nr_connections_changed(void){ 7120 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7121 uint8_t event[3]; 7122 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7123 event[1] = sizeof(event) - 2u; 7124 event[2] = nr_hci_connections(); 7125 hci_emit_event(event, sizeof(event), 1); 7126 } 7127 7128 static void hci_emit_hci_open_failed(void){ 7129 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7130 uint8_t event[2]; 7131 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7132 event[1] = sizeof(event) - 2u; 7133 hci_emit_event(event, sizeof(event), 1); 7134 } 7135 7136 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7137 log_info("hci_emit_dedicated_bonding_result %u ", status); 7138 uint8_t event[9]; 7139 int pos = 0; 7140 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7141 event[pos++] = sizeof(event) - 2u; 7142 event[pos++] = status; 7143 reverse_bd_addr(address, &event[pos]); 7144 hci_emit_event(event, sizeof(event), 1); 7145 } 7146 7147 7148 #ifdef ENABLE_CLASSIC 7149 7150 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7151 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7152 uint8_t event[5]; 7153 int pos = 0; 7154 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7155 event[pos++] = sizeof(event) - 2; 7156 little_endian_store_16(event, 2, con_handle); 7157 pos += 2; 7158 event[pos++] = level; 7159 hci_emit_event(event, sizeof(event), 1); 7160 } 7161 7162 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7163 if (!connection) return LEVEL_0; 7164 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7165 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7166 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7167 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7168 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7169 // LEVEL 4 always requires 128 bit encrytion key size 7170 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7171 security_level = LEVEL_3; 7172 } 7173 return security_level; 7174 } 7175 7176 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7177 uint8_t event[4]; 7178 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7179 event[1] = sizeof(event) - 2; 7180 event[2] = discoverable; 7181 event[3] = connectable; 7182 hci_emit_event(event, sizeof(event), 1); 7183 } 7184 7185 // query if remote side supports eSCO 7186 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7187 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7188 if (!connection) return false; 7189 return (connection->remote_supported_features[0] & 1) != 0; 7190 } 7191 7192 static bool hci_ssp_supported(hci_connection_t * connection){ 7193 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7194 return (connection->bonding_flags & mask) == mask; 7195 } 7196 7197 // query if remote side supports SSP 7198 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7199 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7200 if (!connection) return false; 7201 return hci_ssp_supported(connection) ? 1 : 0; 7202 } 7203 7204 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7205 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7206 } 7207 7208 /** 7209 * Check if remote supported features query has completed 7210 */ 7211 bool hci_remote_features_available(hci_con_handle_t handle){ 7212 hci_connection_t * connection = hci_connection_for_handle(handle); 7213 if (!connection) return false; 7214 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7215 } 7216 7217 /** 7218 * Trigger remote supported features query 7219 */ 7220 7221 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7222 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7223 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7224 } 7225 } 7226 7227 void hci_remote_features_query(hci_con_handle_t con_handle){ 7228 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7229 if (!connection) return; 7230 hci_trigger_remote_features_for_connection(connection); 7231 hci_run(); 7232 } 7233 7234 // GAP API 7235 /** 7236 * @bbrief enable/disable bonding. default is enabled 7237 * @praram enabled 7238 */ 7239 void gap_set_bondable_mode(int enable){ 7240 hci_stack->bondable = enable ? 1 : 0; 7241 } 7242 /** 7243 * @brief Get bondable mode. 7244 * @return 1 if bondable 7245 */ 7246 int gap_get_bondable_mode(void){ 7247 return hci_stack->bondable; 7248 } 7249 7250 /** 7251 * @brief map link keys to security levels 7252 */ 7253 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7254 switch (link_key_type){ 7255 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7256 return LEVEL_4; 7257 case COMBINATION_KEY: 7258 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7259 return LEVEL_3; 7260 default: 7261 return LEVEL_2; 7262 } 7263 } 7264 7265 /** 7266 * @brief map link keys to secure connection yes/no 7267 */ 7268 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7269 switch (link_key_type){ 7270 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7271 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7272 return true; 7273 default: 7274 return false; 7275 } 7276 } 7277 7278 /** 7279 * @brief map link keys to authenticated 7280 */ 7281 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7282 switch (link_key_type){ 7283 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7284 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7285 return true; 7286 default: 7287 return false; 7288 } 7289 } 7290 7291 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7292 log_info("gap_mitm_protection_required_for_security_level %u", level); 7293 return level > LEVEL_2; 7294 } 7295 7296 /** 7297 * @brief get current security level 7298 */ 7299 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7300 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7301 if (!connection) return LEVEL_0; 7302 return gap_security_level_for_connection(connection); 7303 } 7304 7305 /** 7306 * @brief request connection to device to 7307 * @result GAP_AUTHENTICATION_RESULT 7308 */ 7309 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7310 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7311 if (!connection){ 7312 hci_emit_security_level(con_handle, LEVEL_0); 7313 return; 7314 } 7315 7316 btstack_assert(hci_is_le_connection(connection) == false); 7317 7318 // 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) 7319 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7320 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7321 requested_level = LEVEL_4; 7322 } 7323 7324 gap_security_level_t current_level = gap_security_level(con_handle); 7325 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7326 requested_level, connection->requested_security_level, current_level); 7327 7328 // authentication active if authentication request was sent or planned level > 0 7329 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7330 if (authentication_active){ 7331 // authentication already active 7332 if (connection->requested_security_level < requested_level){ 7333 // increase requested level as new level is higher 7334 // TODO: handle re-authentication when done 7335 connection->requested_security_level = requested_level; 7336 } 7337 } else { 7338 // no request active, notify if security sufficient 7339 if (requested_level <= current_level){ 7340 hci_emit_security_level(con_handle, current_level); 7341 return; 7342 } 7343 7344 // store request 7345 connection->requested_security_level = requested_level; 7346 7347 // start to authenticate connection 7348 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7349 7350 // request remote features if not already active, also trigger hci_run 7351 hci_remote_features_query(con_handle); 7352 } 7353 } 7354 7355 /** 7356 * @brief start dedicated bonding with device. disconnect after bonding 7357 * @param device 7358 * @param request MITM protection 7359 * @result GAP_DEDICATED_BONDING_COMPLETE 7360 */ 7361 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7362 7363 // create connection state machine 7364 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7365 7366 if (!connection){ 7367 return BTSTACK_MEMORY_ALLOC_FAILED; 7368 } 7369 7370 // delete linkn key 7371 gap_drop_link_key_for_bd_addr(device); 7372 7373 // configure LEVEL_2/3, dedicated bonding 7374 connection->state = SEND_CREATE_CONNECTION; 7375 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7376 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7377 connection->bonding_flags = BONDING_DEDICATED; 7378 7379 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7380 7381 // handle: connnection failure (connection complete != ok) 7382 // handle: authentication failure 7383 // handle: disconnect on done 7384 7385 hci_run(); 7386 7387 return 0; 7388 } 7389 7390 void gap_set_local_name(const char * local_name){ 7391 hci_stack->local_name = local_name; 7392 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7393 // also update EIR if not set by user 7394 if (hci_stack->eir_data == NULL){ 7395 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7396 } 7397 hci_run(); 7398 } 7399 #endif 7400 7401 7402 #ifdef ENABLE_BLE 7403 7404 #ifdef ENABLE_LE_CENTRAL 7405 void gap_start_scan(void){ 7406 hci_stack->le_scanning_enabled = true; 7407 hci_run(); 7408 } 7409 7410 void gap_stop_scan(void){ 7411 hci_stack->le_scanning_enabled = false; 7412 hci_run(); 7413 } 7414 7415 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7416 hci_stack->le_scan_type = scan_type; 7417 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7418 hci_stack->le_scan_interval = scan_interval; 7419 hci_stack->le_scan_window = scan_window; 7420 hci_stack->le_scanning_param_update = true; 7421 hci_run(); 7422 } 7423 7424 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7425 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 7426 } 7427 7428 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 7429 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 7430 if (!conn){ 7431 // disallow if le connection is already outgoing 7432 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7433 log_error("le connection already active"); 7434 return ERROR_CODE_COMMAND_DISALLOWED; 7435 } 7436 7437 log_info("gap_connect: no connection exists yet, creating context"); 7438 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 7439 if (!conn){ 7440 // notify client that alloc failed 7441 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7442 log_info("gap_connect: failed to alloc hci_connection_t"); 7443 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 7444 } 7445 7446 // set le connecting state 7447 if (hci_is_le_connection_type(addr_type)){ 7448 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 7449 } 7450 7451 conn->state = SEND_CREATE_CONNECTION; 7452 log_info("gap_connect: send create connection next"); 7453 hci_run(); 7454 return ERROR_CODE_SUCCESS; 7455 } 7456 7457 if (!hci_is_le_connection(conn) || 7458 (conn->state == SEND_CREATE_CONNECTION) || 7459 (conn->state == SENT_CREATE_CONNECTION)) { 7460 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 7461 log_error("gap_connect: classic connection or connect is already being created"); 7462 return GATT_CLIENT_IN_WRONG_STATE; 7463 } 7464 7465 // check if connection was just disconnected 7466 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7467 log_info("gap_connect: send create connection (again)"); 7468 conn->state = SEND_CREATE_CONNECTION; 7469 hci_run(); 7470 return ERROR_CODE_SUCCESS; 7471 } 7472 7473 log_info("gap_connect: context exists with state %u", conn->state); 7474 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 7475 hci_run(); 7476 return ERROR_CODE_SUCCESS; 7477 } 7478 7479 // @assumption: only a single outgoing LE Connection exists 7480 static hci_connection_t * gap_get_outgoing_connection(void){ 7481 btstack_linked_item_t *it; 7482 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7483 hci_connection_t * conn = (hci_connection_t *) it; 7484 if (!hci_is_le_connection(conn)) continue; 7485 switch (conn->state){ 7486 case SEND_CREATE_CONNECTION: 7487 case SENT_CREATE_CONNECTION: 7488 case SENT_CANCEL_CONNECTION: 7489 return conn; 7490 default: 7491 break; 7492 }; 7493 } 7494 return NULL; 7495 } 7496 7497 uint8_t gap_connect_cancel(void){ 7498 hci_connection_t * conn; 7499 switch (hci_stack->le_connecting_request){ 7500 case LE_CONNECTING_IDLE: 7501 break; 7502 case LE_CONNECTING_WHITELIST: 7503 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7504 hci_run(); 7505 break; 7506 case LE_CONNECTING_DIRECT: 7507 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7508 conn = gap_get_outgoing_connection(); 7509 if (conn == NULL){ 7510 hci_run(); 7511 } else { 7512 switch (conn->state){ 7513 case SEND_CREATE_CONNECTION: 7514 // skip sending create connection and emit event instead 7515 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 7516 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 7517 btstack_memory_hci_connection_free( conn ); 7518 break; 7519 case SENT_CREATE_CONNECTION: 7520 // request to send cancel connection 7521 conn->state = SEND_CANCEL_CONNECTION; 7522 hci_run(); 7523 break; 7524 default: 7525 break; 7526 } 7527 } 7528 break; 7529 default: 7530 btstack_unreachable(); 7531 break; 7532 } 7533 return ERROR_CODE_SUCCESS; 7534 } 7535 7536 /** 7537 * @brief Set connection parameters for outgoing connections 7538 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 7539 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 7540 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 7541 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 7542 * @param conn_latency, default: 4 7543 * @param supervision_timeout (unit: 10ms), default: 720 ms 7544 * @param min_ce_length (unit: 0.625ms), default: 10 ms 7545 * @param max_ce_length (unit: 0.625ms), default: 30 ms 7546 */ 7547 7548 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 7549 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 7550 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 7551 hci_stack->le_connection_scan_interval = conn_scan_interval; 7552 hci_stack->le_connection_scan_window = conn_scan_window; 7553 hci_stack->le_connection_interval_min = conn_interval_min; 7554 hci_stack->le_connection_interval_max = conn_interval_max; 7555 hci_stack->le_connection_latency = conn_latency; 7556 hci_stack->le_supervision_timeout = supervision_timeout; 7557 hci_stack->le_minimum_ce_length = min_ce_length; 7558 hci_stack->le_maximum_ce_length = max_ce_length; 7559 } 7560 #endif 7561 7562 /** 7563 * @brief Updates the connection parameters for a given LE connection 7564 * @param handle 7565 * @param conn_interval_min (unit: 1.25ms) 7566 * @param conn_interval_max (unit: 1.25ms) 7567 * @param conn_latency 7568 * @param supervision_timeout (unit: 10ms) 7569 * @return 0 if ok 7570 */ 7571 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7572 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7573 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7574 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7575 connection->le_conn_interval_min = conn_interval_min; 7576 connection->le_conn_interval_max = conn_interval_max; 7577 connection->le_conn_latency = conn_latency; 7578 connection->le_supervision_timeout = supervision_timeout; 7579 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 7580 hci_run(); 7581 return 0; 7582 } 7583 7584 /** 7585 * @brief Request an update of the connection parameter for a given LE connection 7586 * @param handle 7587 * @param conn_interval_min (unit: 1.25ms) 7588 * @param conn_interval_max (unit: 1.25ms) 7589 * @param conn_latency 7590 * @param supervision_timeout (unit: 10ms) 7591 * @return 0 if ok 7592 */ 7593 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7594 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7595 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7596 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7597 connection->le_conn_interval_min = conn_interval_min; 7598 connection->le_conn_interval_max = conn_interval_max; 7599 connection->le_conn_latency = conn_latency; 7600 connection->le_supervision_timeout = supervision_timeout; 7601 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 7602 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 7603 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 7604 return 0; 7605 } 7606 7607 #ifdef ENABLE_LE_PERIPHERAL 7608 7609 /** 7610 * @brief Set Advertisement Data 7611 * @param advertising_data_length 7612 * @param advertising_data (max 31 octets) 7613 * @note data is not copied, pointer has to stay valid 7614 */ 7615 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 7616 hci_stack->le_advertisements_data_len = advertising_data_length; 7617 hci_stack->le_advertisements_data = advertising_data; 7618 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7619 hci_run(); 7620 } 7621 7622 /** 7623 * @brief Set Scan Response Data 7624 * @param advertising_data_length 7625 * @param advertising_data (max 31 octets) 7626 * @note data is not copied, pointer has to stay valid 7627 */ 7628 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 7629 hci_stack->le_scan_response_data_len = scan_response_data_length; 7630 hci_stack->le_scan_response_data = scan_response_data; 7631 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7632 hci_run(); 7633 } 7634 7635 /** 7636 * @brief Set Advertisement Parameters 7637 * @param adv_int_min 7638 * @param adv_int_max 7639 * @param adv_type 7640 * @param direct_address_type 7641 * @param direct_address 7642 * @param channel_map 7643 * @param filter_policy 7644 * 7645 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 7646 */ 7647 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 7648 uint8_t direct_address_typ, bd_addr_t direct_address, 7649 uint8_t channel_map, uint8_t filter_policy) { 7650 7651 hci_stack->le_advertisements_interval_min = adv_int_min; 7652 hci_stack->le_advertisements_interval_max = adv_int_max; 7653 hci_stack->le_advertisements_type = adv_type; 7654 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 7655 hci_stack->le_advertisements_channel_map = channel_map; 7656 hci_stack->le_advertisements_filter_policy = filter_policy; 7657 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 7658 6); 7659 7660 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7661 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 7662 hci_run(); 7663 } 7664 7665 /** 7666 * @brief Enable/Disable Advertisements 7667 * @param enabled 7668 */ 7669 void gap_advertisements_enable(int enabled){ 7670 if (enabled == 0){ 7671 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7672 } else { 7673 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 7674 } 7675 hci_update_advertisements_enabled_for_current_roles(); 7676 hci_run(); 7677 } 7678 7679 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7680 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 7681 btstack_linked_list_iterator_t it; 7682 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 7683 while (btstack_linked_list_iterator_has_next(&it)){ 7684 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 7685 if ( item->advertising_handle == advertising_handle ) { 7686 return item; 7687 } 7688 } 7689 return NULL; 7690 } 7691 7692 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 7693 // find free advertisement handle 7694 uint8_t advertisement_handle; 7695 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 7696 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 7697 } 7698 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7699 // clear 7700 memset(storage, 0, sizeof(le_advertising_set_t)); 7701 // copy params 7702 storage->advertising_handle = advertisement_handle; 7703 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7704 // add to list 7705 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 7706 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7707 *out_advertising_handle = advertisement_handle; 7708 // set tasks and start 7709 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7710 hci_run(); 7711 return ERROR_CODE_SUCCESS; 7712 } 7713 7714 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 7715 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7716 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7717 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7718 // set tasks and start 7719 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7720 hci_run(); 7721 return ERROR_CODE_SUCCESS; 7722 } 7723 7724 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 7725 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7726 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7727 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 7728 return ERROR_CODE_SUCCESS; 7729 } 7730 7731 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 7732 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7733 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7734 memcpy(advertising_set->random_address, random_address, 6); 7735 // set tasks and start 7736 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7737 hci_run(); 7738 return ERROR_CODE_SUCCESS; 7739 } 7740 7741 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 7742 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7743 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7744 advertising_set->adv_data = advertising_data; 7745 advertising_set->adv_data_len = advertising_data_length; 7746 // set tasks and start 7747 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7748 hci_run(); 7749 return ERROR_CODE_SUCCESS; 7750 } 7751 7752 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){ 7753 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7754 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7755 advertising_set->scan_data = scan_response_data; 7756 advertising_set->scan_data_len = scan_response_data_length; 7757 // set tasks and start 7758 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7759 hci_run(); 7760 return ERROR_CODE_SUCCESS; 7761 } 7762 7763 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 7764 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7765 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7766 advertising_set->enable_timeout = timeout; 7767 advertising_set->enable_max_scan_events = num_extended_advertising_events; 7768 // set tasks and start 7769 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 7770 hci_run(); 7771 return ERROR_CODE_SUCCESS; 7772 } 7773 7774 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 7775 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7776 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7777 // set tasks and start 7778 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7779 hci_run(); 7780 return ERROR_CODE_SUCCESS; 7781 } 7782 7783 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 7784 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7785 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7786 // set tasks and start 7787 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 7788 hci_run(); 7789 return ERROR_CODE_SUCCESS; 7790 } 7791 7792 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7793 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 7794 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7795 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7796 // periodic advertising requires neither connectable, scannable, legacy or anonymous 7797 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7798 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 7799 // set tasks and start 7800 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 7801 hci_run(); 7802 return ERROR_CODE_SUCCESS; 7803 } 7804 7805 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 7806 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7807 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7808 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 7809 return ERROR_CODE_SUCCESS; 7810 } 7811 7812 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 7813 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7814 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7815 advertising_set->periodic_data = periodic_data; 7816 advertising_set->periodic_data_len = periodic_data_length; 7817 // set tasks and start 7818 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 7819 hci_run(); 7820 return ERROR_CODE_SUCCESS; 7821 } 7822 7823 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 7824 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7825 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7826 // set tasks and start 7827 advertising_set->periodic_include_adi = include_adi; 7828 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7829 hci_run(); 7830 return ERROR_CODE_SUCCESS; 7831 } 7832 7833 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 7834 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7835 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7836 // set tasks and start 7837 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7838 hci_run(); 7839 return ERROR_CODE_SUCCESS; 7840 } 7841 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 7842 7843 #endif 7844 7845 #endif 7846 7847 void hci_le_set_own_address_type(uint8_t own_address_type){ 7848 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 7849 if (own_address_type == hci_stack->le_own_addr_type) return; 7850 hci_stack->le_own_addr_type = own_address_type; 7851 7852 #ifdef ENABLE_LE_PERIPHERAL 7853 // update advertisement parameters, too 7854 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7855 hci_run(); 7856 #endif 7857 #ifdef ENABLE_LE_CENTRAL 7858 // note: we don't update scan parameters or modify ongoing connection attempts 7859 #endif 7860 } 7861 7862 void hci_le_random_address_set(const bd_addr_t random_address){ 7863 memcpy(hci_stack->le_random_address, random_address, 6); 7864 hci_stack->le_random_address_set = true; 7865 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7866 hci_run(); 7867 } 7868 7869 #endif 7870 7871 uint8_t gap_disconnect(hci_con_handle_t handle){ 7872 hci_connection_t * conn = hci_connection_for_handle(handle); 7873 if (!conn){ 7874 hci_emit_disconnection_complete(handle, 0); 7875 return 0; 7876 } 7877 // ignore if already disconnected 7878 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7879 return 0; 7880 } 7881 conn->state = SEND_DISCONNECT; 7882 hci_run(); 7883 return 0; 7884 } 7885 7886 int gap_read_rssi(hci_con_handle_t con_handle){ 7887 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7888 if (hci_connection == NULL) return 0; 7889 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 7890 hci_run(); 7891 return 1; 7892 } 7893 7894 /** 7895 * @brief Get connection type 7896 * @param con_handle 7897 * @result connection_type 7898 */ 7899 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 7900 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7901 if (!conn) return GAP_CONNECTION_INVALID; 7902 switch (conn->address_type){ 7903 case BD_ADDR_TYPE_LE_PUBLIC: 7904 case BD_ADDR_TYPE_LE_RANDOM: 7905 return GAP_CONNECTION_LE; 7906 case BD_ADDR_TYPE_SCO: 7907 return GAP_CONNECTION_SCO; 7908 case BD_ADDR_TYPE_ACL: 7909 return GAP_CONNECTION_ACL; 7910 default: 7911 return GAP_CONNECTION_INVALID; 7912 } 7913 } 7914 7915 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 7916 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7917 if (!conn) return HCI_ROLE_INVALID; 7918 return (hci_role_t) conn->role; 7919 } 7920 7921 7922 #ifdef ENABLE_CLASSIC 7923 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 7924 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7925 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7926 conn->request_role = role; 7927 hci_run(); 7928 return ERROR_CODE_SUCCESS; 7929 } 7930 #endif 7931 7932 #ifdef ENABLE_BLE 7933 7934 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){ 7935 hci_connection_t * conn = hci_connection_for_handle(con_handle); 7936 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7937 7938 conn->le_phy_update_all_phys = all_phys; 7939 conn->le_phy_update_tx_phys = tx_phys; 7940 conn->le_phy_update_rx_phys = rx_phys; 7941 conn->le_phy_update_phy_options = phy_options; 7942 7943 hci_run(); 7944 7945 return 0; 7946 } 7947 7948 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 7949 // check if already in list 7950 btstack_linked_list_iterator_t it; 7951 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7952 while (btstack_linked_list_iterator_has_next(&it)) { 7953 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 7954 if (entry->address_type != address_type) { 7955 continue; 7956 } 7957 if (memcmp(entry->address, address, 6) != 0) { 7958 continue; 7959 } 7960 // disallow if already scheduled to add 7961 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 7962 return ERROR_CODE_COMMAND_DISALLOWED; 7963 } 7964 // still on controller, but scheduled to remove -> re-add 7965 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 7966 return ERROR_CODE_SUCCESS; 7967 } 7968 // alloc and add to list 7969 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 7970 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 7971 entry->address_type = address_type; 7972 (void)memcpy(entry->address, address, 6); 7973 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 7974 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 7975 return ERROR_CODE_SUCCESS; 7976 } 7977 7978 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 7979 btstack_linked_list_iterator_t it; 7980 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7981 while (btstack_linked_list_iterator_has_next(&it)){ 7982 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 7983 if (entry->address_type != address_type) { 7984 continue; 7985 } 7986 if (memcmp(entry->address, address, 6) != 0) { 7987 continue; 7988 } 7989 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 7990 // remove from controller if already present 7991 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 7992 } else { 7993 // directly remove entry from whitelist 7994 btstack_linked_list_iterator_remove(&it); 7995 btstack_memory_whitelist_entry_free(entry); 7996 } 7997 return ERROR_CODE_SUCCESS; 7998 } 7999 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8000 } 8001 8002 static void hci_whitelist_clear(void){ 8003 btstack_linked_list_iterator_t it; 8004 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8005 while (btstack_linked_list_iterator_has_next(&it)){ 8006 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8007 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8008 // remove from controller if already present 8009 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8010 continue; 8011 } 8012 // directly remove entry from whitelist 8013 btstack_linked_list_iterator_remove(&it); 8014 btstack_memory_whitelist_entry_free(entry); 8015 } 8016 } 8017 8018 // free all entries unconditionally 8019 static void hci_whitelist_free(void){ 8020 btstack_linked_list_iterator_t lit; 8021 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 8022 while (btstack_linked_list_iterator_has_next(&lit)){ 8023 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 8024 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 8025 btstack_memory_whitelist_entry_free(entry); 8026 } 8027 } 8028 8029 /** 8030 * @brief Clear Whitelist 8031 * @return 0 if ok 8032 */ 8033 uint8_t gap_whitelist_clear(void){ 8034 hci_whitelist_clear(); 8035 hci_run(); 8036 return ERROR_CODE_SUCCESS; 8037 } 8038 8039 /** 8040 * @brief Add Device to Whitelist 8041 * @param address_typ 8042 * @param address 8043 * @return 0 if ok 8044 */ 8045 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8046 uint8_t status = hci_whitelist_add(address_type, address); 8047 if (status){ 8048 return status; 8049 } 8050 hci_run(); 8051 return ERROR_CODE_SUCCESS; 8052 } 8053 8054 /** 8055 * @brief Remove Device from Whitelist 8056 * @param address_typ 8057 * @param address 8058 * @return 0 if ok 8059 */ 8060 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8061 uint8_t status = hci_whitelist_remove(address_type, address); 8062 if (status){ 8063 return status; 8064 } 8065 hci_run(); 8066 return ERROR_CODE_SUCCESS; 8067 } 8068 8069 #ifdef ENABLE_LE_CENTRAL 8070 /** 8071 * @brief Connect with Whitelist 8072 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8073 * @return - if ok 8074 */ 8075 uint8_t gap_connect_with_whitelist(void){ 8076 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8077 return ERROR_CODE_COMMAND_DISALLOWED; 8078 } 8079 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8080 hci_run(); 8081 return ERROR_CODE_SUCCESS; 8082 } 8083 8084 /** 8085 * @brief Auto Connection Establishment - Start Connecting to device 8086 * @param address_typ 8087 * @param address 8088 * @return 0 if ok 8089 */ 8090 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8091 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8092 return ERROR_CODE_COMMAND_DISALLOWED; 8093 } 8094 8095 uint8_t status = hci_whitelist_add(address_type, address); 8096 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8097 return status; 8098 } 8099 8100 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8101 8102 hci_run(); 8103 return ERROR_CODE_SUCCESS; 8104 } 8105 8106 /** 8107 * @brief Auto Connection Establishment - Stop Connecting to device 8108 * @param address_typ 8109 * @param address 8110 * @return 0 if ok 8111 */ 8112 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8113 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8114 return ERROR_CODE_COMMAND_DISALLOWED; 8115 } 8116 8117 hci_whitelist_remove(address_type, address); 8118 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8119 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8120 } 8121 hci_run(); 8122 return 0; 8123 } 8124 8125 /** 8126 * @brief Auto Connection Establishment - Stop everything 8127 * @note Convenience function to stop all active auto connection attempts 8128 */ 8129 uint8_t gap_auto_connection_stop_all(void){ 8130 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8131 return ERROR_CODE_COMMAND_DISALLOWED; 8132 } 8133 hci_whitelist_clear(); 8134 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8135 hci_run(); 8136 return ERROR_CODE_SUCCESS; 8137 } 8138 8139 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8140 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8141 if (!conn) return 0; 8142 return conn->le_connection_interval; 8143 } 8144 #endif 8145 #endif 8146 8147 #ifdef ENABLE_CLASSIC 8148 /** 8149 * @brief Set Extended Inquiry Response data 8150 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8151 * @note has to be done before stack starts up 8152 */ 8153 void gap_set_extended_inquiry_response(const uint8_t * data){ 8154 hci_stack->eir_data = data; 8155 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8156 hci_run(); 8157 } 8158 8159 /** 8160 * @brief Start GAP Classic Inquiry 8161 * @param duration in 1.28s units 8162 * @return 0 if ok 8163 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8164 */ 8165 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8166 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8167 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8168 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8169 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8170 } 8171 hci_stack->inquiry_state = duration_in_1280ms_units; 8172 hci_stack->inquiry_max_period_length = 0; 8173 hci_stack->inquiry_min_period_length = 0; 8174 hci_run(); 8175 return 0; 8176 } 8177 8178 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8179 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8180 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8181 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8182 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8183 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8184 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8185 8186 hci_stack->inquiry_state = duration; 8187 hci_stack->inquiry_max_period_length = max_period_length; 8188 hci_stack->inquiry_min_period_length = min_period_length; 8189 hci_run(); 8190 return 0; 8191 } 8192 8193 /** 8194 * @brief Stop GAP Classic Inquiry 8195 * @return 0 if ok 8196 */ 8197 int gap_inquiry_stop(void){ 8198 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8199 // emit inquiry complete event, before it even started 8200 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8201 hci_emit_event(event, sizeof(event), 1); 8202 return 0; 8203 } 8204 switch (hci_stack->inquiry_state){ 8205 case GAP_INQUIRY_STATE_ACTIVE: 8206 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8207 hci_run(); 8208 return ERROR_CODE_SUCCESS; 8209 case GAP_INQUIRY_STATE_PERIODIC: 8210 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8211 hci_run(); 8212 return ERROR_CODE_SUCCESS; 8213 default: 8214 return ERROR_CODE_COMMAND_DISALLOWED; 8215 } 8216 } 8217 8218 void gap_inquiry_set_lap(uint32_t lap){ 8219 hci_stack->inquiry_lap = lap; 8220 } 8221 8222 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8223 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8224 hci_stack->inquiry_scan_window = inquiry_scan_window; 8225 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8226 hci_run(); 8227 } 8228 8229 8230 /** 8231 * @brief Remote Name Request 8232 * @param addr 8233 * @param page_scan_repetition_mode 8234 * @param clock_offset only used when bit 15 is set 8235 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8236 */ 8237 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8238 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8239 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8240 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8241 hci_stack->remote_name_clock_offset = clock_offset; 8242 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8243 hci_run(); 8244 return 0; 8245 } 8246 8247 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8248 hci_stack->gap_pairing_state = state; 8249 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8250 hci_run(); 8251 return 0; 8252 } 8253 8254 /** 8255 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8256 * @param addr 8257 * @param pin_data 8258 * @param pin_len 8259 * @return 0 if ok 8260 */ 8261 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8262 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8263 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8264 hci_stack->gap_pairing_pin_len = pin_len; 8265 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8266 } 8267 8268 /** 8269 * @brief Legacy Pairing Pin Code Response 8270 * @param addr 8271 * @param pin 8272 * @return 0 if ok 8273 */ 8274 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8275 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8276 } 8277 8278 /** 8279 * @brief Abort Legacy Pairing 8280 * @param addr 8281 * @param pin 8282 * @return 0 if ok 8283 */ 8284 int gap_pin_code_negative(bd_addr_t addr){ 8285 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8286 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8287 } 8288 8289 /** 8290 * @brief SSP Passkey Response 8291 * @param addr 8292 * @param passkey 8293 * @return 0 if ok 8294 */ 8295 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8296 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8297 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8298 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8299 } 8300 8301 /** 8302 * @brief Abort SSP Passkey Entry/Pairing 8303 * @param addr 8304 * @param pin 8305 * @return 0 if ok 8306 */ 8307 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8308 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8309 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8310 } 8311 8312 /** 8313 * @brief Accept SSP Numeric Comparison 8314 * @param addr 8315 * @param passkey 8316 * @return 0 if ok 8317 */ 8318 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8319 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8320 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8321 } 8322 8323 /** 8324 * @brief Abort SSP Numeric Comparison/Pairing 8325 * @param addr 8326 * @param pin 8327 * @return 0 if ok 8328 */ 8329 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8330 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8331 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8332 } 8333 8334 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8335 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8336 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8337 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8338 connectionSetAuthenticationFlags(conn, flag); 8339 hci_run(); 8340 return ERROR_CODE_SUCCESS; 8341 } 8342 #endif 8343 8344 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8345 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8346 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8347 } 8348 8349 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8350 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8351 } 8352 #endif 8353 8354 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8355 /** 8356 * @brief Report Remote OOB Data 8357 * @param bd_addr 8358 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8359 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8360 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8361 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8362 */ 8363 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){ 8364 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8365 if (connection == NULL) { 8366 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8367 } 8368 connection->classic_oob_c_192 = c_192; 8369 connection->classic_oob_r_192 = r_192; 8370 8371 // ignore P-256 if not supported by us 8372 if (hci_stack->secure_connections_active){ 8373 connection->classic_oob_c_256 = c_256; 8374 connection->classic_oob_r_256 = r_256; 8375 } 8376 8377 return ERROR_CODE_SUCCESS; 8378 } 8379 /** 8380 * @brief Generate new OOB data 8381 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 8382 */ 8383 void gap_ssp_generate_oob_data(void){ 8384 hci_stack->classic_read_local_oob_data = true; 8385 hci_run(); 8386 } 8387 8388 #endif 8389 8390 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 8391 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 8392 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8393 if (connection == NULL) { 8394 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8395 } 8396 8397 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 8398 connection->link_key_type = type; 8399 8400 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 8401 } 8402 8403 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 8404 /** 8405 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 8406 * @param inquiry_mode see bluetooth_defines.h 8407 */ 8408 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 8409 hci_stack->inquiry_mode = inquiry_mode; 8410 } 8411 8412 /** 8413 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 8414 */ 8415 void hci_set_sco_voice_setting(uint16_t voice_setting){ 8416 hci_stack->sco_voice_setting = voice_setting; 8417 } 8418 8419 /** 8420 * @brief Get SCO Voice Setting 8421 * @return current voice setting 8422 */ 8423 uint16_t hci_get_sco_voice_setting(void){ 8424 return hci_stack->sco_voice_setting; 8425 } 8426 8427 static int hci_have_usb_transport(void){ 8428 if (!hci_stack->hci_transport) return 0; 8429 const char * transport_name = hci_stack->hci_transport->name; 8430 if (!transport_name) return 0; 8431 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 8432 } 8433 8434 /** @brief Get SCO packet length for current SCO Voice setting 8435 * @note Using SCO packets of the exact length is required for USB transfer 8436 * @return Length of SCO packets in bytes (not audio frames) 8437 */ 8438 uint16_t hci_get_sco_packet_length(void){ 8439 uint16_t sco_packet_length = 0; 8440 8441 #ifdef ENABLE_SCO_OVER_HCI 8442 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8443 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8444 8445 if (hci_have_usb_transport()){ 8446 // see Core Spec for H2 USB Transfer. 8447 // 3 byte SCO header + 24 bytes per connection 8448 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 8449 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 8450 } else { 8451 // 3 byte SCO header + SCO packet size over the air (60 bytes) 8452 sco_packet_length = 3 + 60 * multiplier; 8453 // assert that it still fits inside an SCO buffer 8454 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 8455 sco_packet_length = 3 + 60; 8456 } 8457 } 8458 #endif 8459 8460 #ifdef HAVE_SCO_TRANSPORT 8461 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8462 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8463 sco_packet_length = 3 + 60 * multiplier; 8464 #endif 8465 return sco_packet_length; 8466 } 8467 8468 /** 8469 * @brief Sets the master/slave policy 8470 * @param policy (0: attempt to become master, 1: let connecting device decide) 8471 */ 8472 void hci_set_master_slave_policy(uint8_t policy){ 8473 hci_stack->master_slave_policy = policy; 8474 } 8475 8476 #endif 8477 8478 HCI_STATE hci_get_state(void){ 8479 return hci_stack->state; 8480 } 8481 8482 #ifdef ENABLE_CLASSIC 8483 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 8484 hci_stack->gap_classic_accept_callback = accept_callback; 8485 } 8486 #endif 8487 8488 /** 8489 * @brief Set callback for Bluetooth Hardware Error 8490 */ 8491 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 8492 hci_stack->hardware_error_callback = fn; 8493 } 8494 8495 void hci_disconnect_all(void){ 8496 btstack_linked_list_iterator_t it; 8497 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8498 while (btstack_linked_list_iterator_has_next(&it)){ 8499 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8500 if (con->state == SENT_DISCONNECT) continue; 8501 con->state = SEND_DISCONNECT; 8502 } 8503 hci_run(); 8504 } 8505 8506 uint16_t hci_get_manufacturer(void){ 8507 return hci_stack->manufacturer; 8508 } 8509 8510 #ifdef ENABLE_BLE 8511 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 8512 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 8513 if (!hci_con) return NULL; 8514 return &hci_con->sm_connection; 8515 } 8516 8517 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 8518 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 8519 #endif 8520 8521 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 8522 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8523 if (hci_connection == NULL) return 0; 8524 if (hci_is_le_connection(hci_connection)){ 8525 #ifdef ENABLE_BLE 8526 sm_connection_t * sm_conn = &hci_connection->sm_connection; 8527 if (sm_conn->sm_connection_encrypted) { 8528 return sm_conn->sm_actual_encryption_key_size; 8529 } 8530 #endif 8531 } else { 8532 #ifdef ENABLE_CLASSIC 8533 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 8534 return hci_connection->encryption_key_size; 8535 } 8536 #endif 8537 } 8538 return 0; 8539 } 8540 8541 bool gap_authenticated(hci_con_handle_t con_handle){ 8542 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8543 if (hci_connection == NULL) return false; 8544 8545 switch (hci_connection->address_type){ 8546 #ifdef ENABLE_BLE 8547 case BD_ADDR_TYPE_LE_PUBLIC: 8548 case BD_ADDR_TYPE_LE_RANDOM: 8549 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 8550 return hci_connection->sm_connection.sm_connection_authenticated != 0; 8551 #endif 8552 #ifdef ENABLE_CLASSIC 8553 case BD_ADDR_TYPE_SCO: 8554 case BD_ADDR_TYPE_ACL: 8555 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 8556 #endif 8557 default: 8558 return false; 8559 } 8560 } 8561 8562 bool gap_secure_connection(hci_con_handle_t con_handle){ 8563 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8564 if (hci_connection == NULL) return 0; 8565 8566 switch (hci_connection->address_type){ 8567 #ifdef ENABLE_BLE 8568 case BD_ADDR_TYPE_LE_PUBLIC: 8569 case BD_ADDR_TYPE_LE_RANDOM: 8570 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 8571 return hci_connection->sm_connection.sm_connection_sc != 0; 8572 #endif 8573 #ifdef ENABLE_CLASSIC 8574 case BD_ADDR_TYPE_SCO: 8575 case BD_ADDR_TYPE_ACL: 8576 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 8577 #endif 8578 default: 8579 return false; 8580 } 8581 } 8582 8583 bool gap_bonded(hci_con_handle_t con_handle){ 8584 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8585 if (hci_connection == NULL) return 0; 8586 8587 #ifdef ENABLE_CLASSIC 8588 link_key_t link_key; 8589 link_key_type_t link_key_type; 8590 #endif 8591 switch (hci_connection->address_type){ 8592 #ifdef ENABLE_BLE 8593 case BD_ADDR_TYPE_LE_PUBLIC: 8594 case BD_ADDR_TYPE_LE_RANDOM: 8595 return hci_connection->sm_connection.sm_le_db_index >= 0; 8596 #endif 8597 #ifdef ENABLE_CLASSIC 8598 case BD_ADDR_TYPE_SCO: 8599 case BD_ADDR_TYPE_ACL: 8600 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 8601 #endif 8602 default: 8603 return false; 8604 } 8605 } 8606 8607 #ifdef ENABLE_BLE 8608 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 8609 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 8610 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 8611 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 8612 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 8613 return sm_conn->sm_connection_authorization_state; 8614 } 8615 #endif 8616 8617 #ifdef ENABLE_CLASSIC 8618 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){ 8619 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8620 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8621 conn->sniff_min_interval = sniff_min_interval; 8622 conn->sniff_max_interval = sniff_max_interval; 8623 conn->sniff_attempt = sniff_attempt; 8624 conn->sniff_timeout = sniff_timeout; 8625 hci_run(); 8626 return 0; 8627 } 8628 8629 /** 8630 * @brief Exit Sniff mode 8631 * @param con_handle 8632 @ @return 0 if ok 8633 */ 8634 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 8635 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8636 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8637 conn->sniff_min_interval = 0xffff; 8638 hci_run(); 8639 return 0; 8640 } 8641 8642 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){ 8643 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8644 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8645 conn->sniff_subrating_max_latency = max_latency; 8646 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 8647 conn->sniff_subrating_min_local_timeout = min_local_timeout; 8648 hci_run(); 8649 return ERROR_CODE_SUCCESS; 8650 } 8651 8652 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){ 8653 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8654 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8655 conn->qos_service_type = service_type; 8656 conn->qos_token_rate = token_rate; 8657 conn->qos_peak_bandwidth = peak_bandwidth; 8658 conn->qos_latency = latency; 8659 conn->qos_delay_variation = delay_variation; 8660 hci_run(); 8661 return ERROR_CODE_SUCCESS; 8662 } 8663 8664 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 8665 hci_stack->new_page_scan_interval = page_scan_interval; 8666 hci_stack->new_page_scan_window = page_scan_window; 8667 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 8668 hci_run(); 8669 } 8670 8671 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 8672 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 8673 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 8674 hci_run(); 8675 } 8676 8677 void gap_set_page_timeout(uint16_t page_timeout){ 8678 hci_stack->page_timeout = page_timeout; 8679 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 8680 hci_run(); 8681 } 8682 8683 #endif 8684 8685 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 8686 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 8687 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8688 if (le_device_db_index >= le_device_db_max_count()) return; 8689 uint8_t offset = le_device_db_index >> 3; 8690 uint8_t mask = 1 << (le_device_db_index & 7); 8691 hci_stack->le_resolving_list_add_entries[offset] |= mask; 8692 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8693 // note: go back to remove entries, otherwise, a remove + add will skip the add 8694 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8695 } 8696 } 8697 8698 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 8699 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8700 if (le_device_db_index >= le_device_db_max_count()) return; 8701 uint8_t offset = le_device_db_index >> 3; 8702 uint8_t mask = 1 << (le_device_db_index & 7); 8703 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 8704 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8705 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8706 } 8707 } 8708 8709 uint8_t gap_load_resolving_list_from_le_device_db(void){ 8710 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 8711 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 8712 } 8713 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 8714 // restart le resolving list update 8715 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 8716 } 8717 return ERROR_CODE_SUCCESS; 8718 } 8719 #endif 8720 8721 #ifdef ENABLE_BLE 8722 #ifdef ENABLE_LE_CENTRAL 8723 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8724 8725 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8726 // check if already in list 8727 btstack_linked_list_iterator_t it; 8728 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8729 while (btstack_linked_list_iterator_has_next(&it)) { 8730 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 8731 if (entry->sid != advertising_sid) { 8732 continue; 8733 } 8734 if (entry->address_type != address_type) { 8735 continue; 8736 } 8737 if (memcmp(entry->address, address, 6) != 0) { 8738 continue; 8739 } 8740 // disallow if already scheduled to add 8741 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 8742 return ERROR_CODE_COMMAND_DISALLOWED; 8743 } 8744 // still on controller, but scheduled to remove -> re-add 8745 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8746 return ERROR_CODE_SUCCESS; 8747 } 8748 // alloc and add to list 8749 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 8750 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8751 entry->sid = advertising_sid; 8752 entry->address_type = address_type; 8753 (void)memcpy(entry->address, address, 6); 8754 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8755 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 8756 return ERROR_CODE_SUCCESS; 8757 } 8758 8759 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8760 btstack_linked_list_iterator_t it; 8761 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8762 while (btstack_linked_list_iterator_has_next(&it)){ 8763 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8764 if (entry->sid != advertising_sid) { 8765 continue; 8766 } 8767 if (entry->address_type != address_type) { 8768 continue; 8769 } 8770 if (memcmp(entry->address, address, 6) != 0) { 8771 continue; 8772 } 8773 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8774 // remove from controller if already present 8775 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8776 } else { 8777 // directly remove entry from whitelist 8778 btstack_linked_list_iterator_remove(&it); 8779 btstack_memory_periodic_advertiser_list_entry_free(entry); 8780 } 8781 return ERROR_CODE_SUCCESS; 8782 } 8783 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8784 } 8785 8786 static void hci_periodic_advertiser_list_clear(void){ 8787 btstack_linked_list_iterator_t it; 8788 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8789 while (btstack_linked_list_iterator_has_next(&it)){ 8790 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8791 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8792 // remove from controller if already present 8793 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8794 continue; 8795 } 8796 // directly remove entry from whitelist 8797 btstack_linked_list_iterator_remove(&it); 8798 btstack_memory_periodic_advertiser_list_entry_free(entry); 8799 } 8800 } 8801 8802 // free all entries unconditionally 8803 static void hci_periodic_advertiser_list_free(void){ 8804 btstack_linked_list_iterator_t lit; 8805 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 8806 while (btstack_linked_list_iterator_has_next(&lit)){ 8807 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 8808 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 8809 btstack_memory_periodic_advertiser_list_entry_free(entry); 8810 } 8811 } 8812 8813 uint8_t gap_periodic_advertiser_list_clear(void){ 8814 hci_periodic_advertiser_list_clear(); 8815 hci_run(); 8816 return ERROR_CODE_SUCCESS; 8817 } 8818 8819 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8820 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 8821 if (status){ 8822 return status; 8823 } 8824 hci_run(); 8825 return ERROR_CODE_SUCCESS; 8826 } 8827 8828 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8829 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 8830 if (status){ 8831 return status; 8832 } 8833 hci_run(); 8834 return ERROR_CODE_SUCCESS; 8835 } 8836 8837 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 8838 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 8839 // abort if already active 8840 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 8841 return ERROR_CODE_COMMAND_DISALLOWED; 8842 } 8843 // store request 8844 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 8845 hci_stack->le_periodic_sync_options = options; 8846 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 8847 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 8848 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 8849 hci_stack->le_periodic_sync_skip = skip; 8850 hci_stack->le_periodic_sync_timeout = sync_timeout; 8851 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 8852 8853 hci_run(); 8854 return ERROR_CODE_SUCCESS; 8855 } 8856 8857 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 8858 // abort if not requested 8859 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 8860 return ERROR_CODE_COMMAND_DISALLOWED; 8861 } 8862 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 8863 hci_run(); 8864 return ERROR_CODE_SUCCESS; 8865 } 8866 8867 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 8868 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 8869 return ERROR_CODE_COMMAND_DISALLOWED; 8870 } 8871 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 8872 hci_run(); 8873 return ERROR_CODE_SUCCESS; 8874 } 8875 8876 #endif 8877 #endif 8878 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 8879 static uint8_t hci_iso_stream_create(hci_con_handle_t con_handle, uint8_t big_handle) { 8880 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 8881 if (iso_stream == NULL){ 8882 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8883 } else { 8884 iso_stream->state = HCI_ISO_STREAM_STATE_REQUESTED; 8885 iso_stream->con_handle = con_handle; 8886 iso_stream->big_handle = big_handle; 8887 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 8888 return ERROR_CODE_SUCCESS; 8889 } 8890 } 8891 8892 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 8893 btstack_linked_list_iterator_t it; 8894 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8895 while (btstack_linked_list_iterator_has_next(&it)){ 8896 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8897 if (iso_stream->con_handle == con_handle ) { 8898 return iso_stream; 8899 } 8900 } 8901 return NULL; 8902 } 8903 8904 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 8905 log_info("hci_iso_stream_finalize con_handle 0x%04x, big_handle 0x%02x", iso_stream->con_handle, iso_stream->big_handle); 8906 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 8907 btstack_memory_hci_iso_stream_free(iso_stream); 8908 } 8909 8910 static void hci_iso_stream_requested_finalize(uint8_t big_handle) { 8911 btstack_linked_list_iterator_t it; 8912 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8913 while (btstack_linked_list_iterator_has_next(&it)){ 8914 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8915 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 8916 (iso_stream->big_handle == big_handle)){ 8917 btstack_linked_list_iterator_remove(&it); 8918 btstack_memory_hci_iso_stream_free(iso_stream); 8919 } 8920 } 8921 } 8922 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 8923 btstack_linked_list_iterator_t it; 8924 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8925 while (btstack_linked_list_iterator_has_next(&it)){ 8926 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8927 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 8928 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 8929 } 8930 } 8931 } 8932 8933 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 8934 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 8935 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 8936 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 8937 return (sdu_len_offset + 2 + sdu_len) == size; 8938 } 8939 8940 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 8941 if (hci_stack->iso_packet_handler == NULL) { 8942 return; 8943 } 8944 if (size < 4) { 8945 return; 8946 } 8947 8948 // parse header 8949 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 8950 uint16_t iso_data_len = little_endian_read_16(packet, 2); 8951 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 8952 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 8953 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 8954 8955 // assert packet is complete 8956 if ((iso_data_len + 4u) != size){ 8957 return; 8958 } 8959 8960 if ((pb_flag & 0x01) == 0){ 8961 if (pb_flag == 0x02){ 8962 // The ISO_Data_Load field contains a header and a complete SDU. 8963 if (hci_iso_sdu_complete(packet, size)) { 8964 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 8965 } 8966 } else { 8967 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 8968 if (iso_stream == NULL){ 8969 return; 8970 } 8971 if (size > HCI_ISO_PAYLOAD_SIZE){ 8972 return; 8973 } 8974 memcpy(iso_stream->reassembly_buffer, packet, size); 8975 // fix pb_flag 8976 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 8977 iso_stream->reassembly_pos = size; 8978 } 8979 } else { 8980 // iso_data_load contains continuation or last fragment of an SDU 8981 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 8982 if (ts_flag != 0){ 8983 return; 8984 } 8985 // append fragment 8986 if (iso_stream == NULL){ 8987 return; 8988 } 8989 if (iso_stream->reassembly_pos == 0){ 8990 return; 8991 } 8992 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 8993 // reset reassembly buffer 8994 iso_stream->reassembly_pos = 0; 8995 return; 8996 } 8997 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 8998 iso_stream->reassembly_pos += iso_data_len; 8999 9000 // deliver if last fragment and SDU complete 9001 if (pb_flag == 0x03){ 9002 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9003 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9004 } 9005 iso_stream->reassembly_pos = 0; 9006 } 9007 } 9008 } 9009 9010 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9011 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9012 uint16_t pos = 0; 9013 event[pos++] = HCI_EVENT_META_GAP; 9014 event[pos++] = 4 + (2 * big->num_bis); 9015 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9016 event[pos++] = status; 9017 event[pos++] = big->big_handle; 9018 event[pos++] = big->num_bis; 9019 uint8_t i; 9020 for (i=0;i<big->num_bis;i++){ 9021 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9022 pos += 2; 9023 } 9024 hci_emit_event(event, pos, 0); 9025 } 9026 9027 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9028 uint8_t event [4]; 9029 uint16_t pos = 0; 9030 event[pos++] = HCI_EVENT_META_GAP; 9031 event[pos++] = 2; 9032 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9033 event[pos++] = big->big_handle; 9034 hci_emit_event(event, pos, 0); 9035 } 9036 9037 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9038 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9039 uint16_t pos = 0; 9040 event[pos++] = HCI_EVENT_META_GAP; 9041 event[pos++] = 4; 9042 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9043 event[pos++] = status; 9044 event[pos++] = big_sync->big_handle; 9045 event[pos++] = big_sync->num_bis; 9046 uint8_t i; 9047 for (i=0;i<big_sync->num_bis;i++){ 9048 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9049 pos += 2; 9050 } 9051 hci_emit_event(event, pos, 0); 9052 } 9053 9054 static void hci_emit_big_sync_stopped(const le_audio_big_sync_t * big_sync){ 9055 uint8_t event [4]; 9056 uint16_t pos = 0; 9057 event[pos++] = HCI_EVENT_META_GAP; 9058 event[pos++] = 2; 9059 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9060 event[pos++] = big_sync->big_handle; 9061 hci_emit_event(event, pos, 0); 9062 } 9063 9064 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9065 uint8_t event[6]; 9066 uint16_t pos = 0; 9067 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9068 event[pos++] = sizeof(event) - 2; 9069 event[pos++] = big->big_handle; 9070 event[pos++] = bis_index; 9071 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9072 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9073 } 9074 9075 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9076 btstack_linked_list_iterator_t it; 9077 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9078 while (btstack_linked_list_iterator_has_next(&it)){ 9079 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9080 if ( big->big_handle == big_handle ) { 9081 return big; 9082 } 9083 } 9084 return NULL; 9085 } 9086 9087 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9088 btstack_linked_list_iterator_t it; 9089 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9090 while (btstack_linked_list_iterator_has_next(&it)){ 9091 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9092 if ( big_sync->big_handle == big_handle ) { 9093 return big_sync; 9094 } 9095 } 9096 return NULL; 9097 } 9098 9099 static void hci_iso_notify_can_send_now(void){ 9100 btstack_linked_list_iterator_t it; 9101 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9102 while (btstack_linked_list_iterator_has_next(&it)){ 9103 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9104 if (big->can_send_now_requested){ 9105 // check if no outgoing iso packets pending and no can send now have to be emitted 9106 uint8_t i; 9107 bool can_send = true; 9108 for (i=0;i<big->num_bis;i++){ 9109 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9110 if ((iso_stream == NULL) || (iso_stream->num_packets_sent > 0) || (iso_stream->emit_ready_to_send)){ 9111 can_send = false; 9112 break; 9113 } 9114 } 9115 if (can_send){ 9116 // propagate can send now to individual streams 9117 big->can_send_now_requested = false; 9118 for (i=0;i<big->num_bis;i++){ 9119 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9120 iso_stream->emit_ready_to_send = true; 9121 } 9122 } 9123 } 9124 } 9125 9126 if (hci_stack->hci_packet_buffer_reserved) return; 9127 9128 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9129 while (btstack_linked_list_iterator_has_next(&it)){ 9130 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9131 // report bis ready 9132 uint8_t i; 9133 for (i=0;i<big->num_bis;i++){ 9134 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9135 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9136 iso_stream->emit_ready_to_send = false; 9137 hci_emit_bis_can_send_now(big, i); 9138 break; 9139 } 9140 } 9141 } 9142 } 9143 9144 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9145 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9146 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9147 } 9148 if (big_params->num_bis == 0){ 9149 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9150 } 9151 if (big_params->num_bis > MAX_NR_BIS){ 9152 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9153 } 9154 9155 // reserve ISO Streams 9156 uint8_t i; 9157 uint8_t status = ERROR_CODE_SUCCESS; 9158 for (i=0;i<big_params->num_bis;i++){ 9159 status = hci_iso_stream_create(HCI_CON_HANDLE_INVALID, big_params->big_handle); 9160 if (status != ERROR_CODE_SUCCESS) { 9161 break; 9162 } 9163 } 9164 9165 // free structs on error 9166 if (status != ERROR_CODE_SUCCESS){ 9167 hci_iso_stream_requested_finalize(big_params->big_handle); 9168 return status; 9169 } 9170 9171 le_audio_big_t * big = storage; 9172 big->big_handle = big_params->big_handle; 9173 big->params = big_params; 9174 big->state = LE_AUDIO_BIG_STATE_CREATE; 9175 big->num_bis = big_params->num_bis; 9176 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9177 9178 hci_run(); 9179 9180 return ERROR_CODE_SUCCESS; 9181 } 9182 9183 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9184 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9185 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9186 } 9187 if (big_sync_params->num_bis == 0){ 9188 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9189 } 9190 if (big_sync_params->num_bis > MAX_NR_BIS){ 9191 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9192 } 9193 9194 le_audio_big_sync_t * big_sync = storage; 9195 big_sync->big_handle = big_sync_params->big_handle; 9196 big_sync->params = big_sync_params; 9197 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9198 big_sync->num_bis = big_sync_params->num_bis; 9199 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9200 9201 hci_run(); 9202 9203 return ERROR_CODE_SUCCESS; 9204 } 9205 9206 uint8_t gap_big_terminate(uint8_t big_handle){ 9207 le_audio_big_t * big = hci_big_for_handle(big_handle); 9208 if (big == NULL){ 9209 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9210 } 9211 switch (big->state){ 9212 case LE_AUDIO_BIG_STATE_CREATE: 9213 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9214 hci_emit_big_terminated(big); 9215 break; 9216 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9217 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9218 break; 9219 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9220 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9221 case LE_AUDIO_BIG_STATE_ACTIVE: 9222 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9223 hci_run(); 9224 break; 9225 default: 9226 return ERROR_CODE_COMMAND_DISALLOWED; 9227 } 9228 return ERROR_CODE_SUCCESS; 9229 } 9230 9231 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9232 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9233 if (big_sync == NULL){ 9234 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9235 } 9236 switch (big_sync->state){ 9237 case LE_AUDIO_BIG_STATE_CREATE: 9238 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9239 hci_emit_big_sync_stopped(big_sync); 9240 break; 9241 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9242 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9243 break; 9244 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9245 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9246 case LE_AUDIO_BIG_STATE_ACTIVE: 9247 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 9248 hci_run(); 9249 break; 9250 default: 9251 return ERROR_CODE_COMMAND_DISALLOWED; 9252 } 9253 return ERROR_CODE_SUCCESS; 9254 } 9255 9256 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 9257 le_audio_big_t * big = hci_big_for_handle(big_handle); 9258 if (big == NULL){ 9259 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9260 } 9261 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 9262 return ERROR_CODE_COMMAND_DISALLOWED; 9263 } 9264 big->can_send_now_requested = true; 9265 hci_iso_notify_can_send_now(); 9266 return ERROR_CODE_SUCCESS; 9267 } 9268 #endif 9269 #endif /* ENABLE_BLE */ 9270 9271 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 9272 void hci_setup_test_connections_fuzz(void){ 9273 hci_connection_t * conn; 9274 9275 // default address: 66:55:44:33:00:01 9276 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 9277 9278 // setup Controller info 9279 hci_stack->num_cmd_packets = 255; 9280 hci_stack->acl_packets_total_num = 255; 9281 9282 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 9283 addr[5] = 0x01; 9284 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9285 conn->con_handle = addr[5]; 9286 conn->role = HCI_ROLE_SLAVE; 9287 conn->state = RECEIVED_CONNECTION_REQUEST; 9288 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9289 9290 // setup incoming Classic SCO connection with con handle 0x0002 9291 addr[5] = 0x02; 9292 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 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 ready Classic ACL connection with con handle 0x0003 9299 addr[5] = 0x03; 9300 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9301 conn->con_handle = addr[5]; 9302 conn->role = HCI_ROLE_SLAVE; 9303 conn->state = OPEN; 9304 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9305 9306 // setup ready Classic SCO connection with con handle 0x0004 9307 addr[5] = 0x04; 9308 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 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 LE ACL connection with con handle 0x005 and public address 9315 addr[5] = 0x05; 9316 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 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 conn->sm_connection.sm_connection_encrypted = 1; 9322 } 9323 9324 void hci_free_connections_fuzz(void){ 9325 btstack_linked_list_iterator_t it; 9326 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9327 while (btstack_linked_list_iterator_has_next(&it)){ 9328 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9329 btstack_linked_list_iterator_remove(&it); 9330 btstack_memory_hci_connection_free(con); 9331 } 9332 } 9333 void hci_simulate_working_fuzz(void){ 9334 hci_stack->le_scanning_param_update = false; 9335 hci_init_done(); 9336 hci_stack->num_cmd_packets = 255; 9337 } 9338 #endif 9339