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 } 3925 } 3926 } 3927 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3928 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3929 big->state_vars.next_bis = 0; 3930 } 3931 } else { 3932 // create BIG failed or has been stopped by us 3933 hci_iso_stream_requested_finalize(big->big_handle); 3934 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 3935 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 3936 hci_emit_big_created(big, status); 3937 } else { 3938 hci_emit_big_terminated(big); 3939 } 3940 } 3941 } 3942 break; 3943 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 3944 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 3945 if (big != NULL){ 3946 // finalize associated ISO streams 3947 btstack_linked_list_iterator_t it; 3948 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3949 while (btstack_linked_list_iterator_has_next(&it)){ 3950 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3951 if (iso_stream->big_handle == big->big_handle){ 3952 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->big_handle, iso_stream->con_handle); 3953 btstack_linked_list_iterator_remove(&it); 3954 btstack_memory_hci_iso_stream_free(iso_stream); 3955 } 3956 } 3957 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 3958 switch (big->state){ 3959 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3960 hci_emit_big_created(big, big->state_vars.status); 3961 break; 3962 default: 3963 hci_emit_big_terminated(big); 3964 break; 3965 } 3966 } 3967 break; 3968 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 3969 big_sync = hci_big_sync_for_handle(packet[4]); 3970 if (big_sync != NULL){ 3971 uint8_t status = packet[3]; 3972 if (status == ERROR_CODE_SUCCESS){ 3973 // store bis_con_handles and trigger iso path setup 3974 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 3975 uint8_t i; 3976 for (i=0;i<num_bis;i++){ 3977 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 3978 } 3979 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3980 // trigger iso path setup 3981 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3982 big_sync->state_vars.next_bis = 0; 3983 } 3984 } else { 3985 // create BIG Sync failed or has been stopped by us 3986 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 3987 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3988 hci_emit_big_sync_created(big_sync, status); 3989 } else { 3990 hci_emit_big_sync_stopped(big_sync); 3991 } 3992 } 3993 } 3994 break; 3995 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 3996 big_sync = hci_big_sync_for_handle(packet[4]); 3997 if (big_sync != NULL){ 3998 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 3999 hci_emit_big_sync_stopped(big_sync); 4000 } 4001 break; 4002 #endif 4003 default: 4004 break; 4005 } 4006 break; 4007 #endif 4008 case HCI_EVENT_VENDOR_SPECIFIC: 4009 // Vendor specific commands often create vendor specific event instead of num completed packets 4010 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4011 switch (hci_stack->manufacturer){ 4012 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4013 hci_stack->num_cmd_packets = 1; 4014 break; 4015 default: 4016 break; 4017 } 4018 break; 4019 default: 4020 break; 4021 } 4022 4023 handle_event_for_current_stack_state(packet, size); 4024 4025 // notify upper stack 4026 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4027 4028 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4029 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4030 handle = little_endian_read_16(packet, 3); 4031 hci_connection_t * aConn = hci_connection_for_handle(handle); 4032 // discard connection if app did not trigger a reconnect in the event handler 4033 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4034 hci_shutdown_connection(aConn); 4035 } 4036 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4037 hci_controller_dump_packets(); 4038 #endif 4039 } 4040 4041 // execute main loop 4042 hci_run(); 4043 } 4044 4045 #ifdef ENABLE_CLASSIC 4046 4047 #ifdef ENABLE_SCO_OVER_HCI 4048 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4049 static void sco_schedule_tx(hci_connection_t * conn); 4050 4051 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4052 log_debug("SCO TX Timeout"); 4053 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4054 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4055 if (!conn) return; 4056 4057 // trigger send 4058 conn->sco_tx_ready = 1; 4059 // extra packet if CVSD but SCO buffer is too short 4060 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4061 conn->sco_tx_ready++; 4062 } 4063 hci_notify_if_sco_can_send_now(); 4064 } 4065 4066 4067 #define SCO_TX_AFTER_RX_MS (6) 4068 4069 static void sco_schedule_tx(hci_connection_t * conn){ 4070 4071 uint32_t now = btstack_run_loop_get_time_ms(); 4072 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4073 int time_delta_ms = sco_tx_ms - now; 4074 4075 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4076 4077 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4078 btstack_run_loop_remove_timer(timer); 4079 btstack_run_loop_set_timer(timer, time_delta_ms); 4080 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4081 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4082 btstack_run_loop_add_timer(timer); 4083 } 4084 #endif 4085 4086 static void sco_handler(uint8_t * packet, uint16_t size){ 4087 // lookup connection struct 4088 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4089 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4090 if (!conn) return; 4091 4092 #ifdef ENABLE_SCO_OVER_HCI 4093 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4094 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4095 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4096 packet[2] = 0x3c; 4097 memmove(&packet[3], &packet[23], 63); 4098 size = 63; 4099 } 4100 } 4101 4102 if (hci_have_usb_transport()){ 4103 // Nothing to do 4104 } else { 4105 // 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); 4106 if (hci_stack->synchronous_flow_control_enabled == 0){ 4107 uint32_t now = btstack_run_loop_get_time_ms(); 4108 4109 if (!conn->sco_rx_valid){ 4110 // ignore first 10 packets 4111 conn->sco_rx_count++; 4112 // log_debug("sco rx count %u", conn->sco_rx_count); 4113 if (conn->sco_rx_count == 10) { 4114 // use first timestamp as is and pretent it just started 4115 conn->sco_rx_ms = now; 4116 conn->sco_rx_valid = 1; 4117 conn->sco_rx_count = 0; 4118 sco_schedule_tx(conn); 4119 } 4120 } else { 4121 // track expected arrival timme 4122 conn->sco_rx_count++; 4123 conn->sco_rx_ms += 7; 4124 int delta = (int32_t) (now - conn->sco_rx_ms); 4125 if (delta > 0){ 4126 conn->sco_rx_ms++; 4127 } 4128 // log_debug("sco rx %u", conn->sco_rx_ms); 4129 sco_schedule_tx(conn); 4130 } 4131 } 4132 } 4133 #endif 4134 4135 // deliver to app 4136 if (hci_stack->sco_packet_handler) { 4137 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4138 } 4139 4140 #ifdef HAVE_SCO_TRANSPORT 4141 // We can send one packet for each received packet 4142 conn->sco_tx_ready++; 4143 hci_notify_if_sco_can_send_now(); 4144 #endif 4145 4146 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4147 conn->num_packets_completed++; 4148 hci_stack->host_completed_packets = 1; 4149 hci_run(); 4150 #endif 4151 } 4152 #endif 4153 4154 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4155 hci_dump_packet(packet_type, 1, packet, size); 4156 switch (packet_type) { 4157 case HCI_EVENT_PACKET: 4158 event_handler(packet, size); 4159 break; 4160 case HCI_ACL_DATA_PACKET: 4161 acl_handler(packet, size); 4162 break; 4163 #ifdef ENABLE_CLASSIC 4164 case HCI_SCO_DATA_PACKET: 4165 sco_handler(packet, size); 4166 break; 4167 #endif 4168 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4169 case HCI_ISO_DATA_PACKET: 4170 hci_iso_packet_handler(packet, size); 4171 break; 4172 #endif 4173 default: 4174 break; 4175 } 4176 } 4177 4178 /** 4179 * @brief Add event packet handler. 4180 */ 4181 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4182 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4183 } 4184 4185 /** 4186 * @brief Remove event packet handler. 4187 */ 4188 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4189 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4190 } 4191 4192 /** Register HCI packet handlers */ 4193 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4194 hci_stack->acl_packet_handler = handler; 4195 } 4196 4197 #ifdef ENABLE_CLASSIC 4198 /** 4199 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4200 */ 4201 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4202 hci_stack->sco_packet_handler = handler; 4203 } 4204 #endif 4205 4206 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4207 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4208 hci_stack->iso_packet_handler = handler; 4209 } 4210 #endif 4211 4212 static void hci_state_reset(void){ 4213 // no connections yet 4214 hci_stack->connections = NULL; 4215 4216 // keep discoverable/connectable as this has been requested by the client(s) 4217 // hci_stack->discoverable = 0; 4218 // hci_stack->connectable = 0; 4219 // hci_stack->bondable = 1; 4220 // hci_stack->own_addr_type = 0; 4221 4222 // buffer is free 4223 hci_stack->hci_packet_buffer_reserved = false; 4224 4225 // no pending cmds 4226 hci_stack->decline_reason = 0; 4227 4228 hci_stack->secure_connections_active = false; 4229 4230 #ifdef ENABLE_CLASSIC 4231 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4232 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4233 4234 hci_stack->gap_tasks_classic = 4235 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4236 GAP_TASK_SET_CLASS_OF_DEVICE | 4237 GAP_TASK_SET_LOCAL_NAME | 4238 GAP_TASK_SET_EIR_DATA | 4239 GAP_TASK_WRITE_SCAN_ENABLE | 4240 GAP_TASK_WRITE_PAGE_TIMEOUT; 4241 #endif 4242 4243 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4244 hci_stack->classic_read_local_oob_data = false; 4245 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4246 #endif 4247 4248 // LE 4249 #ifdef ENABLE_BLE 4250 memset(hci_stack->le_random_address, 0, 6); 4251 hci_stack->le_random_address_set = 0; 4252 #endif 4253 #ifdef ENABLE_LE_CENTRAL 4254 hci_stack->le_scanning_active = false; 4255 hci_stack->le_scanning_param_update = true; 4256 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4257 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4258 hci_stack->le_whitelist_capacity = 0; 4259 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4260 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4261 #endif 4262 #endif 4263 #ifdef ENABLE_LE_PERIPHERAL 4264 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4265 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4266 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4267 } 4268 if (hci_stack->le_advertisements_data != NULL){ 4269 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4270 } 4271 #endif 4272 } 4273 4274 #ifdef ENABLE_CLASSIC 4275 /** 4276 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4277 */ 4278 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4279 // store and open remote device db 4280 hci_stack->link_key_db = link_key_db; 4281 if (hci_stack->link_key_db) { 4282 hci_stack->link_key_db->open(); 4283 } 4284 } 4285 #endif 4286 4287 void hci_init(const hci_transport_t *transport, const void *config){ 4288 4289 #ifdef HAVE_MALLOC 4290 if (!hci_stack) { 4291 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4292 } 4293 #else 4294 hci_stack = &hci_stack_static; 4295 #endif 4296 memset(hci_stack, 0, sizeof(hci_stack_t)); 4297 4298 // reference to use transport layer implementation 4299 hci_stack->hci_transport = transport; 4300 4301 // reference to used config 4302 hci_stack->config = config; 4303 4304 // setup pointer for outgoing packet buffer 4305 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4306 4307 // max acl payload size defined in config.h 4308 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4309 4310 // register packet handlers with transport 4311 transport->register_packet_handler(&packet_handler); 4312 4313 hci_stack->state = HCI_STATE_OFF; 4314 4315 // class of device 4316 hci_stack->class_of_device = 0x007a020c; // Smartphone 4317 4318 // bondable by default 4319 hci_stack->bondable = 1; 4320 4321 #ifdef ENABLE_CLASSIC 4322 // classic name 4323 hci_stack->local_name = default_classic_name; 4324 4325 // Master slave policy 4326 hci_stack->master_slave_policy = 1; 4327 4328 // Allow Role Switch 4329 hci_stack->allow_role_switch = 1; 4330 4331 // Default / minimum security level = 2 4332 hci_stack->gap_security_level = LEVEL_2; 4333 4334 // Default Security Mode 4 4335 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4336 4337 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4338 hci_stack->gap_required_encyrption_key_size = 7; 4339 4340 // Link Supervision Timeout 4341 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4342 4343 #endif 4344 4345 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4346 hci_stack->ssp_enable = 1; 4347 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4348 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4349 hci_stack->ssp_auto_accept = 1; 4350 4351 // Secure Connections: enable (requires support from Controller) 4352 hci_stack->secure_connections_enable = true; 4353 4354 // voice setting - signed 16 bit pcm data with CVSD over the air 4355 hci_stack->sco_voice_setting = 0x60; 4356 4357 #ifdef ENABLE_LE_CENTRAL 4358 // connection parameter to use for outgoing connections 4359 hci_stack->le_connection_scan_interval = 0x0060; // 60ms 4360 hci_stack->le_connection_scan_window = 0x0030; // 30ms 4361 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4362 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4363 hci_stack->le_connection_latency = 4; // 4 4364 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4365 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 4366 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 4367 4368 // default LE Scanning 4369 hci_stack->le_scan_type = 0x1; // active 4370 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4371 hci_stack->le_scan_window = 0x30; // 30 ms 4372 #endif 4373 4374 #ifdef ENABLE_LE_PERIPHERAL 4375 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4376 #endif 4377 4378 // connection parameter range used to answer connection parameter update requests in l2cap 4379 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4380 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4381 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4382 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4383 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4384 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4385 4386 hci_state_reset(); 4387 } 4388 4389 void hci_deinit(void){ 4390 btstack_run_loop_remove_timer(&hci_stack->timeout); 4391 #ifdef HAVE_MALLOC 4392 if (hci_stack) { 4393 free(hci_stack); 4394 } 4395 #endif 4396 hci_stack = NULL; 4397 4398 #ifdef ENABLE_CLASSIC 4399 disable_l2cap_timeouts = 0; 4400 #endif 4401 } 4402 4403 /** 4404 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4405 */ 4406 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4407 hci_stack->chipset = chipset_driver; 4408 4409 // reset chipset driver - init is also called on power_up 4410 if (hci_stack->chipset && hci_stack->chipset->init){ 4411 hci_stack->chipset->init(hci_stack->config); 4412 } 4413 } 4414 4415 /** 4416 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4417 */ 4418 void hci_set_control(const btstack_control_t *hardware_control){ 4419 // references to used control implementation 4420 hci_stack->control = hardware_control; 4421 // init with transport config 4422 hardware_control->init(hci_stack->config); 4423 } 4424 4425 static void hci_discard_connections(void){ 4426 btstack_linked_list_iterator_t it; 4427 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4428 while (btstack_linked_list_iterator_has_next(&it)){ 4429 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4430 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4431 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4432 hci_shutdown_connection(connection); 4433 } 4434 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4435 while (hci_stack->iso_streams != NULL){ 4436 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4437 } 4438 #endif 4439 } 4440 4441 void hci_close(void){ 4442 4443 #ifdef ENABLE_CLASSIC 4444 // close remote device db 4445 if (hci_stack->link_key_db) { 4446 hci_stack->link_key_db->close(); 4447 } 4448 #endif 4449 4450 hci_discard_connections(); 4451 4452 hci_power_control(HCI_POWER_OFF); 4453 4454 #ifdef HAVE_MALLOC 4455 free(hci_stack); 4456 #endif 4457 hci_stack = NULL; 4458 } 4459 4460 #ifdef HAVE_SCO_TRANSPORT 4461 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4462 hci_stack->sco_transport = sco_transport; 4463 sco_transport->register_packet_handler(&packet_handler); 4464 } 4465 #endif 4466 4467 #ifdef ENABLE_CLASSIC 4468 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4469 // validate ranage and set 4470 if (encryption_key_size < 7) return; 4471 if (encryption_key_size > 16) return; 4472 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4473 } 4474 4475 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4476 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4477 hci_stack->gap_security_mode = security_mode; 4478 return ERROR_CODE_SUCCESS; 4479 } else { 4480 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4481 } 4482 } 4483 4484 gap_security_mode_t gap_get_security_mode(void){ 4485 return hci_stack->gap_security_mode; 4486 } 4487 4488 void gap_set_security_level(gap_security_level_t security_level){ 4489 hci_stack->gap_security_level = security_level; 4490 } 4491 4492 gap_security_level_t gap_get_security_level(void){ 4493 if (hci_stack->gap_secure_connections_only_mode){ 4494 return LEVEL_4; 4495 } 4496 return hci_stack->gap_security_level; 4497 } 4498 4499 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4500 hci_stack->gap_minimal_service_security_level = security_level; 4501 } 4502 4503 void gap_set_secure_connections_only_mode(bool enable){ 4504 hci_stack->gap_secure_connections_only_mode = enable; 4505 } 4506 4507 bool gap_get_secure_connections_only_mode(void){ 4508 return hci_stack->gap_secure_connections_only_mode; 4509 } 4510 #endif 4511 4512 #ifdef ENABLE_CLASSIC 4513 void gap_set_class_of_device(uint32_t class_of_device){ 4514 hci_stack->class_of_device = class_of_device; 4515 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4516 hci_run(); 4517 } 4518 4519 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4520 hci_stack->default_link_policy_settings = default_link_policy_settings; 4521 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4522 hci_run(); 4523 } 4524 4525 void gap_set_allow_role_switch(bool allow_role_switch){ 4526 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4527 } 4528 4529 uint8_t hci_get_allow_role_switch(void){ 4530 return hci_stack->allow_role_switch; 4531 } 4532 4533 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4534 hci_stack->link_supervision_timeout = link_supervision_timeout; 4535 } 4536 4537 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4538 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4539 } 4540 4541 uint16_t hci_automatic_flush_timeout(void){ 4542 return hci_stack->automatic_flush_timeout; 4543 } 4544 4545 void hci_disable_l2cap_timeout_check(void){ 4546 disable_l2cap_timeouts = 1; 4547 } 4548 #endif 4549 4550 #ifndef HAVE_HOST_CONTROLLER_API 4551 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4552 void hci_set_bd_addr(bd_addr_t addr){ 4553 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4554 hci_stack->custom_bd_addr_set = 1; 4555 } 4556 #endif 4557 4558 // State-Module-Driver overview 4559 // state module low-level 4560 // HCI_STATE_OFF off close 4561 // HCI_STATE_INITIALIZING, on open 4562 // HCI_STATE_WORKING, on open 4563 // HCI_STATE_HALTING, on open 4564 // HCI_STATE_SLEEPING, off/sleep close 4565 // HCI_STATE_FALLING_ASLEEP on open 4566 4567 static int hci_power_control_on(void){ 4568 4569 // power on 4570 int err = 0; 4571 if (hci_stack->control && hci_stack->control->on){ 4572 err = (*hci_stack->control->on)(); 4573 } 4574 if (err){ 4575 log_error( "POWER_ON failed"); 4576 hci_emit_hci_open_failed(); 4577 return err; 4578 } 4579 4580 // int chipset driver 4581 if (hci_stack->chipset && hci_stack->chipset->init){ 4582 hci_stack->chipset->init(hci_stack->config); 4583 } 4584 4585 // init transport 4586 if (hci_stack->hci_transport->init){ 4587 hci_stack->hci_transport->init(hci_stack->config); 4588 } 4589 4590 // open transport 4591 err = hci_stack->hci_transport->open(); 4592 if (err){ 4593 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4594 if (hci_stack->control && hci_stack->control->off){ 4595 (*hci_stack->control->off)(); 4596 } 4597 hci_emit_hci_open_failed(); 4598 return err; 4599 } 4600 return 0; 4601 } 4602 4603 static void hci_power_control_off(void){ 4604 4605 log_info("hci_power_control_off"); 4606 4607 // close low-level device 4608 hci_stack->hci_transport->close(); 4609 4610 log_info("hci_power_control_off - hci_transport closed"); 4611 4612 // power off 4613 if (hci_stack->control && hci_stack->control->off){ 4614 (*hci_stack->control->off)(); 4615 } 4616 4617 log_info("hci_power_control_off - control closed"); 4618 4619 hci_stack->state = HCI_STATE_OFF; 4620 } 4621 4622 static void hci_power_control_sleep(void){ 4623 4624 log_info("hci_power_control_sleep"); 4625 4626 #if 0 4627 // don't close serial port during sleep 4628 4629 // close low-level device 4630 hci_stack->hci_transport->close(hci_stack->config); 4631 #endif 4632 4633 // sleep mode 4634 if (hci_stack->control && hci_stack->control->sleep){ 4635 (*hci_stack->control->sleep)(); 4636 } 4637 4638 hci_stack->state = HCI_STATE_SLEEPING; 4639 } 4640 4641 static int hci_power_control_wake(void){ 4642 4643 log_info("hci_power_control_wake"); 4644 4645 // wake on 4646 if (hci_stack->control && hci_stack->control->wake){ 4647 (*hci_stack->control->wake)(); 4648 } 4649 4650 #if 0 4651 // open low-level device 4652 int err = hci_stack->hci_transport->open(hci_stack->config); 4653 if (err){ 4654 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4655 if (hci_stack->control && hci_stack->control->off){ 4656 (*hci_stack->control->off)(); 4657 } 4658 hci_emit_hci_open_failed(); 4659 return err; 4660 } 4661 #endif 4662 4663 return 0; 4664 } 4665 4666 static void hci_power_enter_initializing_state(void){ 4667 // set up state machine 4668 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4669 hci_stack->hci_packet_buffer_reserved = false; 4670 hci_stack->state = HCI_STATE_INITIALIZING; 4671 hci_stack->substate = HCI_INIT_SEND_RESET; 4672 } 4673 4674 static void hci_power_enter_halting_state(void){ 4675 #ifdef ENABLE_BLE 4676 hci_whitelist_free(); 4677 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4678 hci_periodic_advertiser_list_free(); 4679 #endif 4680 #endif 4681 // see hci_run 4682 hci_stack->state = HCI_STATE_HALTING; 4683 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4684 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4685 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4686 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4687 btstack_run_loop_add_timer(&hci_stack->timeout); 4688 } 4689 4690 // returns error 4691 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4692 int err; 4693 switch (power_mode){ 4694 case HCI_POWER_ON: 4695 err = hci_power_control_on(); 4696 if (err != 0) { 4697 log_error("hci_power_control_on() error %d", err); 4698 return err; 4699 } 4700 hci_power_enter_initializing_state(); 4701 break; 4702 case HCI_POWER_OFF: 4703 // do nothing 4704 break; 4705 case HCI_POWER_SLEEP: 4706 // do nothing (with SLEEP == OFF) 4707 break; 4708 default: 4709 btstack_assert(false); 4710 break; 4711 } 4712 return ERROR_CODE_SUCCESS; 4713 } 4714 4715 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 4716 switch (power_mode){ 4717 case HCI_POWER_ON: 4718 // do nothing 4719 break; 4720 case HCI_POWER_OFF: 4721 // no connections yet, just turn it off 4722 hci_power_control_off(); 4723 break; 4724 case HCI_POWER_SLEEP: 4725 // no connections yet, just turn it off 4726 hci_power_control_sleep(); 4727 break; 4728 default: 4729 btstack_assert(false); 4730 break; 4731 } 4732 return ERROR_CODE_SUCCESS; 4733 } 4734 4735 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 4736 switch (power_mode){ 4737 case HCI_POWER_ON: 4738 // do nothing 4739 break; 4740 case HCI_POWER_OFF: 4741 hci_power_enter_halting_state(); 4742 break; 4743 case HCI_POWER_SLEEP: 4744 // see hci_run 4745 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4746 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4747 break; 4748 default: 4749 btstack_assert(false); 4750 break; 4751 } 4752 return ERROR_CODE_SUCCESS; 4753 } 4754 4755 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 4756 switch (power_mode){ 4757 case HCI_POWER_ON: 4758 hci_power_enter_initializing_state(); 4759 break; 4760 case HCI_POWER_OFF: 4761 // do nothing 4762 break; 4763 case HCI_POWER_SLEEP: 4764 // see hci_run 4765 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4766 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4767 break; 4768 default: 4769 btstack_assert(false); 4770 break; 4771 } 4772 return ERROR_CODE_SUCCESS; 4773 } 4774 4775 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 4776 switch (power_mode){ 4777 case HCI_POWER_ON: 4778 hci_power_enter_initializing_state(); 4779 break; 4780 case HCI_POWER_OFF: 4781 hci_power_enter_halting_state(); 4782 break; 4783 case HCI_POWER_SLEEP: 4784 // do nothing 4785 break; 4786 default: 4787 btstack_assert(false); 4788 break; 4789 } 4790 return ERROR_CODE_SUCCESS; 4791 } 4792 4793 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 4794 int err; 4795 switch (power_mode){ 4796 case HCI_POWER_ON: 4797 err = hci_power_control_wake(); 4798 if (err) return err; 4799 hci_power_enter_initializing_state(); 4800 break; 4801 case HCI_POWER_OFF: 4802 hci_power_enter_halting_state(); 4803 break; 4804 case HCI_POWER_SLEEP: 4805 // do nothing 4806 break; 4807 default: 4808 btstack_assert(false); 4809 break; 4810 } 4811 return ERROR_CODE_SUCCESS; 4812 } 4813 4814 int hci_power_control(HCI_POWER_MODE power_mode){ 4815 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 4816 int err = 0; 4817 switch (hci_stack->state){ 4818 case HCI_STATE_OFF: 4819 err = hci_power_control_state_off(power_mode); 4820 break; 4821 case HCI_STATE_INITIALIZING: 4822 err = hci_power_control_state_initializing(power_mode); 4823 break; 4824 case HCI_STATE_WORKING: 4825 err = hci_power_control_state_working(power_mode); 4826 break; 4827 case HCI_STATE_HALTING: 4828 err = hci_power_control_state_halting(power_mode); 4829 break; 4830 case HCI_STATE_FALLING_ASLEEP: 4831 err = hci_power_control_state_falling_asleep(power_mode); 4832 break; 4833 case HCI_STATE_SLEEPING: 4834 err = hci_power_control_state_sleeping(power_mode); 4835 break; 4836 default: 4837 btstack_assert(false); 4838 break; 4839 } 4840 if (err != 0){ 4841 return err; 4842 } 4843 4844 // create internal event 4845 hci_emit_state(); 4846 4847 // trigger next/first action 4848 hci_run(); 4849 4850 return 0; 4851 } 4852 4853 4854 static void hci_halting_run(void) { 4855 4856 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 4857 4858 hci_connection_t *connection; 4859 #ifdef ENABLE_BLE 4860 #ifdef ENABLE_LE_PERIPHERAL 4861 bool stop_advertismenets; 4862 #endif 4863 #endif 4864 4865 switch (hci_stack->substate) { 4866 case HCI_HALTING_CLASSIC_STOP: 4867 #ifdef ENABLE_CLASSIC 4868 if (!hci_can_send_command_packet_now()) return; 4869 4870 if (hci_stack->connectable || hci_stack->discoverable){ 4871 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4872 hci_send_cmd(&hci_write_scan_enable, 0); 4873 return; 4874 } 4875 #endif 4876 /* fall through */ 4877 4878 case HCI_HALTING_LE_ADV_STOP: 4879 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4880 4881 #ifdef ENABLE_BLE 4882 #ifdef ENABLE_LE_PERIPHERAL 4883 if (!hci_can_send_command_packet_now()) return; 4884 4885 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 4886 4887 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4888 if (hci_extended_advertising_supported()){ 4889 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4890 btstack_linked_list_iterator_t it; 4891 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4892 // stop all periodic advertisements and check if an extended set is active 4893 while (btstack_linked_list_iterator_has_next(&it)){ 4894 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 4895 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 4896 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 4897 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 4898 return; 4899 } 4900 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 4901 stop_advertismenets = true; 4902 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4903 } 4904 } 4905 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 4906 if (stop_advertismenets){ 4907 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4908 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 4909 return; 4910 } 4911 } 4912 else 4913 #else /* ENABLE_LE_PERIPHERAL */ 4914 { 4915 if (stop_advertismenets) { 4916 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4917 hci_send_cmd(&hci_le_set_advertise_enable, 0); 4918 return; 4919 } 4920 } 4921 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 4922 #endif /* ENABLE_LE_PERIPHERAL */ 4923 #endif /* ENABLE_BLE */ 4924 4925 /* fall through */ 4926 4927 case HCI_HALTING_LE_SCAN_STOP: 4928 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 4929 if (!hci_can_send_command_packet_now()) return; 4930 4931 #ifdef ENABLE_BLE 4932 #ifdef ENABLE_LE_CENTRAL 4933 if (hci_stack->le_scanning_active){ 4934 hci_le_scan_stop(); 4935 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4936 return; 4937 } 4938 #endif 4939 #endif 4940 4941 /* fall through */ 4942 4943 case HCI_HALTING_DISCONNECT_ALL: 4944 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4945 if (!hci_can_send_command_packet_now()) return; 4946 4947 // close all open connections 4948 connection = (hci_connection_t *) hci_stack->connections; 4949 if (connection) { 4950 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 4951 4952 // check state 4953 if (connection->state == SENT_DISCONNECT) return; 4954 connection->state = SENT_DISCONNECT; 4955 4956 log_info("HCI_STATE_HALTING, connection %p, handle %u", connection, con_handle); 4957 4958 // finally, send the disconnect command 4959 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4960 return; 4961 } 4962 4963 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4964 // stop BIGs and BIG Syncs 4965 if (hci_stack->le_audio_bigs != NULL){ 4966 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 4967 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 4968 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 4969 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 4970 return; 4971 } 4972 if (hci_stack->le_audio_big_syncs != NULL){ 4973 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 4974 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 4975 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 4976 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 4977 return; 4978 } 4979 #endif 4980 4981 btstack_run_loop_remove_timer(&hci_stack->timeout); 4982 4983 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 4984 log_info("HCI_STATE_HALTING: wait 50 ms"); 4985 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 4986 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 4987 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4988 btstack_run_loop_add_timer(&hci_stack->timeout); 4989 break; 4990 4991 case HCI_HALTING_CLOSE: 4992 // close left over connections (that had not been properly closed before) 4993 hci_discard_connections(); 4994 4995 log_info("HCI_STATE_HALTING, calling off"); 4996 4997 // switch mode 4998 hci_power_control_off(); 4999 5000 log_info("HCI_STATE_HALTING, emitting state"); 5001 hci_emit_state(); 5002 log_info("HCI_STATE_HALTING, done"); 5003 break; 5004 5005 case HCI_HALTING_W4_CLOSE_TIMER: 5006 // keep waiting 5007 5008 break; 5009 default: 5010 break; 5011 } 5012 }; 5013 5014 static void hci_falling_asleep_run(void){ 5015 hci_connection_t * connection; 5016 switch(hci_stack->substate) { 5017 case HCI_FALLING_ASLEEP_DISCONNECT: 5018 log_info("HCI_STATE_FALLING_ASLEEP"); 5019 // close all open connections 5020 connection = (hci_connection_t *) hci_stack->connections; 5021 if (connection){ 5022 5023 // send disconnect 5024 if (!hci_can_send_command_packet_now()) return; 5025 5026 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5027 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5028 5029 // send disconnected event right away - causes higher layer connections to get closed, too. 5030 hci_shutdown_connection(connection); 5031 return; 5032 } 5033 5034 if (hci_classic_supported()){ 5035 // disable page and inquiry scan 5036 if (!hci_can_send_command_packet_now()) return; 5037 5038 log_info("HCI_STATE_HALTING, disabling inq scans"); 5039 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5040 5041 // continue in next sub state 5042 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5043 break; 5044 } 5045 5046 /* fall through */ 5047 5048 case HCI_FALLING_ASLEEP_COMPLETE: 5049 log_info("HCI_STATE_HALTING, calling sleep"); 5050 // switch mode 5051 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5052 hci_emit_state(); 5053 break; 5054 5055 default: 5056 break; 5057 } 5058 } 5059 5060 #ifdef ENABLE_CLASSIC 5061 5062 static void hci_update_scan_enable(void){ 5063 // 2 = page scan, 1 = inq scan 5064 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5065 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5066 hci_run(); 5067 } 5068 5069 void gap_discoverable_control(uint8_t enable){ 5070 if (enable) enable = 1; // normalize argument 5071 5072 if (hci_stack->discoverable == enable){ 5073 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5074 return; 5075 } 5076 5077 hci_stack->discoverable = enable; 5078 hci_update_scan_enable(); 5079 } 5080 5081 void gap_connectable_control(uint8_t enable){ 5082 if (enable) enable = 1; // normalize argument 5083 5084 // don't emit event 5085 if (hci_stack->connectable == enable) return; 5086 5087 hci_stack->connectable = enable; 5088 hci_update_scan_enable(); 5089 } 5090 #endif 5091 5092 void gap_local_bd_addr(bd_addr_t address_buffer){ 5093 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5094 } 5095 5096 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5097 static void hci_host_num_completed_packets(void){ 5098 5099 // create packet manually as arrays are not supported and num_commands should not get reduced 5100 hci_reserve_packet_buffer(); 5101 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5102 5103 uint16_t size = 0; 5104 uint16_t num_handles = 0; 5105 packet[size++] = 0x35; 5106 packet[size++] = 0x0c; 5107 size++; // skip param len 5108 size++; // skip num handles 5109 5110 // add { handle, packets } entries 5111 btstack_linked_item_t * it; 5112 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5113 hci_connection_t * connection = (hci_connection_t *) it; 5114 if (connection->num_packets_completed){ 5115 little_endian_store_16(packet, size, connection->con_handle); 5116 size += 2; 5117 little_endian_store_16(packet, size, connection->num_packets_completed); 5118 size += 2; 5119 // 5120 num_handles++; 5121 connection->num_packets_completed = 0; 5122 } 5123 } 5124 5125 packet[2] = size - 3; 5126 packet[3] = num_handles; 5127 5128 hci_stack->host_completed_packets = 0; 5129 5130 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5131 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5132 5133 // release packet buffer for synchronous transport implementations 5134 if (hci_transport_synchronous()){ 5135 hci_release_packet_buffer(); 5136 hci_emit_transport_packet_sent(); 5137 } 5138 } 5139 #endif 5140 5141 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5142 UNUSED(ds); 5143 hci_stack->substate = HCI_HALTING_CLOSE; 5144 // allow packet handlers to defer final shutdown 5145 hci_emit_state(); 5146 hci_run(); 5147 } 5148 5149 static bool hci_run_acl_fragments(void){ 5150 if (hci_stack->acl_fragmentation_total_size > 0u) { 5151 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5152 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5153 if (connection) { 5154 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5155 hci_send_acl_packet_fragments(connection); 5156 return true; 5157 } 5158 } else { 5159 // connection gone -> discard further fragments 5160 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5161 hci_stack->acl_fragmentation_total_size = 0; 5162 hci_stack->acl_fragmentation_pos = 0; 5163 } 5164 } 5165 return false; 5166 } 5167 5168 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5169 static bool hci_run_iso_fragments(void){ 5170 if (hci_stack->iso_fragmentation_total_size > 0u) { 5171 // TODO: flow control 5172 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5173 hci_send_iso_packet_fragments(); 5174 return true; 5175 } 5176 } 5177 return false; 5178 } 5179 #endif 5180 5181 #ifdef ENABLE_CLASSIC 5182 5183 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5184 static bool hci_classic_operation_active(void) { 5185 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5186 return true; 5187 } 5188 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5189 return true; 5190 } 5191 btstack_linked_item_t * it; 5192 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5193 hci_connection_t *connection = (hci_connection_t *) it; 5194 switch (connection->state) { 5195 case SENT_CREATE_CONNECTION: 5196 case SENT_CANCEL_CONNECTION: 5197 case SENT_DISCONNECT: 5198 return true; 5199 default: 5200 break; 5201 } 5202 } 5203 return false; 5204 } 5205 #endif 5206 5207 static bool hci_run_general_gap_classic(void){ 5208 5209 // assert stack is working and classic is active 5210 if (hci_classic_supported() == false) return false; 5211 if (hci_stack->state != HCI_STATE_WORKING) return false; 5212 5213 // decline incoming connections 5214 if (hci_stack->decline_reason){ 5215 uint8_t reason = hci_stack->decline_reason; 5216 hci_stack->decline_reason = 0; 5217 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5218 return true; 5219 } 5220 5221 if (hci_stack->gap_tasks_classic != 0){ 5222 hci_run_gap_tasks_classic(); 5223 return true; 5224 } 5225 5226 // start/stop inquiry 5227 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5228 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5229 if (hci_classic_operation_active() == false) 5230 #endif 5231 { 5232 uint8_t duration = hci_stack->inquiry_state; 5233 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5234 if (hci_stack->inquiry_max_period_length != 0){ 5235 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); 5236 } else { 5237 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5238 } 5239 return true; 5240 } 5241 } 5242 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5243 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5244 hci_send_cmd(&hci_inquiry_cancel); 5245 return true; 5246 } 5247 5248 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5249 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5250 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5251 return true; 5252 } 5253 5254 // remote name request 5255 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5256 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5257 if (hci_classic_operation_active() == false) 5258 #endif 5259 { 5260 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5261 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5262 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5263 return true; 5264 } 5265 } 5266 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5267 // Local OOB data 5268 if (hci_stack->classic_read_local_oob_data){ 5269 hci_stack->classic_read_local_oob_data = false; 5270 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5271 hci_send_cmd(&hci_read_local_extended_oob_data); 5272 } else { 5273 hci_send_cmd(&hci_read_local_oob_data); 5274 } 5275 } 5276 #endif 5277 // pairing 5278 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5279 uint8_t state = hci_stack->gap_pairing_state; 5280 uint8_t pin_code[16]; 5281 switch (state){ 5282 case GAP_PAIRING_STATE_SEND_PIN: 5283 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5284 memset(pin_code, 0, 16); 5285 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5286 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5287 break; 5288 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5289 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5290 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5291 break; 5292 case GAP_PAIRING_STATE_SEND_PASSKEY: 5293 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5294 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5295 break; 5296 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5297 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5298 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5299 break; 5300 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5301 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5302 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5303 break; 5304 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5305 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5306 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5307 break; 5308 default: 5309 break; 5310 } 5311 return true; 5312 } 5313 return false; 5314 } 5315 #endif 5316 5317 #ifdef ENABLE_BLE 5318 5319 #ifdef ENABLE_LE_CENTRAL 5320 static void hci_le_scan_stop(void){ 5321 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5322 if (hci_extended_advertising_supported()) { 5323 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5324 } else 5325 #endif 5326 { 5327 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5328 } 5329 } 5330 #endif 5331 5332 #ifdef ENABLE_LE_PERIPHERAL 5333 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5334 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5335 uint8_t operation = 0; 5336 if (pos == 0){ 5337 // first fragment or complete data 5338 operation |= 1; 5339 } 5340 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5341 // last fragment or complete data 5342 operation |= 2; 5343 } 5344 return operation; 5345 } 5346 #endif 5347 #endif 5348 5349 static bool hci_run_general_gap_le(void){ 5350 5351 btstack_linked_list_iterator_t lit; 5352 5353 // Phase 1: collect what to stop 5354 5355 #ifdef ENABLE_LE_CENTRAL 5356 bool scanning_stop = false; 5357 bool connecting_stop = false; 5358 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5359 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5360 bool periodic_sync_stop = false; 5361 #endif 5362 #endif 5363 #endif 5364 5365 #ifdef ENABLE_LE_PERIPHERAL 5366 bool advertising_stop = false; 5367 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5368 le_advertising_set_t * advertising_stop_set = NULL; 5369 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5370 bool periodic_advertising_stop = false; 5371 #endif 5372 #endif 5373 #endif 5374 5375 // check if own address changes 5376 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5377 5378 // check if whitelist needs modification 5379 bool whitelist_modification_pending = false; 5380 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5381 while (btstack_linked_list_iterator_has_next(&lit)){ 5382 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5383 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5384 whitelist_modification_pending = true; 5385 break; 5386 } 5387 } 5388 5389 // check if resolving list needs modification 5390 bool resolving_list_modification_pending = false; 5391 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5392 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5393 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5394 resolving_list_modification_pending = true; 5395 } 5396 #endif 5397 5398 #ifdef ENABLE_LE_CENTRAL 5399 5400 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5401 // check if periodic advertiser list needs modification 5402 bool periodic_list_modification_pending = false; 5403 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5404 while (btstack_linked_list_iterator_has_next(&lit)){ 5405 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5406 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5407 periodic_list_modification_pending = true; 5408 break; 5409 } 5410 } 5411 #endif 5412 5413 // scanning control 5414 if (hci_stack->le_scanning_active) { 5415 // stop if: 5416 // - parameter change required 5417 // - it's disabled 5418 // - whitelist change required but used for scanning 5419 // - resolving list modified 5420 // - own address changes 5421 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5422 if ((hci_stack->le_scanning_param_update) || 5423 !hci_stack->le_scanning_enabled || 5424 (scanning_uses_whitelist && whitelist_modification_pending) || 5425 resolving_list_modification_pending || 5426 random_address_change){ 5427 5428 scanning_stop = true; 5429 } 5430 } 5431 5432 // connecting control 5433 bool connecting_with_whitelist; 5434 switch (hci_stack->le_connecting_state){ 5435 case LE_CONNECTING_DIRECT: 5436 case LE_CONNECTING_WHITELIST: 5437 // stop connecting if: 5438 // - connecting uses white and whitelist modification pending 5439 // - if it got disabled 5440 // - resolving list modified 5441 // - own address changes 5442 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5443 if ((connecting_with_whitelist && whitelist_modification_pending) || 5444 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5445 resolving_list_modification_pending || 5446 random_address_change) { 5447 5448 connecting_stop = true; 5449 } 5450 break; 5451 default: 5452 break; 5453 } 5454 5455 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5456 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5457 // periodic sync control 5458 bool sync_with_advertiser_list; 5459 switch(hci_stack->le_periodic_sync_state){ 5460 case LE_CONNECTING_DIRECT: 5461 case LE_CONNECTING_WHITELIST: 5462 // stop sync if: 5463 // - sync with advertiser list and advertiser list modification pending 5464 // - if it got disabled 5465 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5466 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5467 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5468 periodic_sync_stop = true; 5469 } 5470 break; 5471 default: 5472 break; 5473 } 5474 #endif 5475 #endif 5476 5477 #endif /* ENABLE_LE_CENTRAL */ 5478 5479 #ifdef ENABLE_LE_PERIPHERAL 5480 // le advertisement control 5481 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5482 // stop if: 5483 // - parameter change required 5484 // - random address used in advertising and changes 5485 // - it's disabled 5486 // - whitelist change required but used for advertisement filter policy 5487 // - resolving list modified 5488 // - own address changes 5489 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5490 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5491 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5492 if (advertising_change || 5493 (advertising_uses_random_address && random_address_change) || 5494 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5495 (advertising_uses_whitelist && whitelist_modification_pending) || 5496 resolving_list_modification_pending || 5497 random_address_change) { 5498 5499 advertising_stop = true; 5500 } 5501 } 5502 5503 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5504 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5505 btstack_linked_list_iterator_t it; 5506 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5507 while (btstack_linked_list_iterator_has_next(&it)){ 5508 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5509 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5510 // stop if: 5511 // - parameter change required 5512 // - random address used in connectable advertising and changes 5513 // - it's disabled 5514 // - whitelist change required but used for advertisement filter policy 5515 // - resolving list modified 5516 // - own address changes 5517 // - advertisement set will be removed 5518 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5519 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5520 bool advertising_uses_random_address = 5521 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5522 advertising_connectable; 5523 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5524 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5525 bool advertising_set_random_address_change = 5526 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5527 bool advertising_set_will_be_removed = 5528 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5529 if (advertising_parameter_change || 5530 (advertising_uses_random_address && advertising_set_random_address_change) || 5531 (advertising_enabled == false) || 5532 (advertising_uses_whitelist && whitelist_modification_pending) || 5533 resolving_list_modification_pending || 5534 advertising_set_will_be_removed) { 5535 5536 advertising_stop = true; 5537 advertising_stop_set = advertising_set; 5538 break; 5539 } 5540 } 5541 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5542 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5543 // stop if: 5544 // - it's disabled 5545 // - parameter change required 5546 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5547 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5548 if ((periodic_enabled == false) || periodic_parameter_change){ 5549 periodic_advertising_stop = true; 5550 advertising_stop_set = advertising_set; 5551 } 5552 } 5553 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5554 } 5555 } 5556 #endif 5557 5558 #endif 5559 5560 5561 // Phase 2: stop everything that should be off during modifications 5562 5563 5564 // 2.1 Outgoing connection 5565 #ifdef ENABLE_LE_CENTRAL 5566 if (connecting_stop){ 5567 hci_send_cmd(&hci_le_create_connection_cancel); 5568 return true; 5569 } 5570 #endif 5571 5572 // 2.2 Scanning 5573 #ifdef ENABLE_LE_CENTRAL 5574 if (scanning_stop){ 5575 hci_stack->le_scanning_active = false; 5576 hci_le_scan_stop(); 5577 return true; 5578 } 5579 5580 // 2.3 Periodic Sync 5581 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5582 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5583 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5584 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5585 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5586 return true; 5587 } 5588 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5589 if (periodic_sync_stop){ 5590 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5591 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5592 return true; 5593 } 5594 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5595 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5596 #endif /* ENABLE_LE_CENTRAL */ 5597 5598 // 2.4 Advertising: legacy, extended, periodic 5599 #ifdef ENABLE_LE_PERIPHERAL 5600 if (advertising_stop){ 5601 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5602 if (hci_extended_advertising_supported()) { 5603 uint8_t advertising_stop_handle; 5604 if (advertising_stop_set != NULL){ 5605 advertising_stop_handle = advertising_stop_set->advertising_handle; 5606 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5607 } else { 5608 advertising_stop_handle = 0; 5609 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5610 } 5611 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5612 const uint16_t durations[] = { 0 }; 5613 const uint16_t max_events[] = { 0 }; 5614 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5615 } else 5616 #endif 5617 { 5618 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5619 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5620 } 5621 return true; 5622 } 5623 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5624 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5625 if (periodic_advertising_stop){ 5626 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5627 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5628 return true; 5629 } 5630 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5631 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5632 #endif /* ENABLE_LE_PERIPHERAL */ 5633 5634 5635 // Phase 3: modify 5636 5637 if (random_address_change){ 5638 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5639 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5640 if (hci_extended_advertising_supported()) { 5641 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5642 } 5643 #endif 5644 { 5645 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5646 } 5647 return true; 5648 } 5649 5650 #ifdef ENABLE_LE_CENTRAL 5651 if (hci_stack->le_scanning_param_update){ 5652 hci_stack->le_scanning_param_update = false; 5653 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5654 if (hci_extended_advertising_supported()){ 5655 // prepare arrays for all PHYs 5656 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5657 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5658 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5659 uint8_t scanning_phys = 1; // LE 1M PHY 5660 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5661 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5662 } else 5663 #endif 5664 { 5665 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5666 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5667 } 5668 return true; 5669 } 5670 #endif 5671 5672 #ifdef ENABLE_LE_PERIPHERAL 5673 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5674 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5675 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5676 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5677 if (hci_extended_advertising_supported()){ 5678 // map advertisment type to advertising event properties 5679 uint16_t adv_event_properties = 0; 5680 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 5681 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 5682 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 5683 } 5684 hci_stack->le_advertising_set_in_current_command = 0; 5685 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5686 0, 5687 adv_event_properties, 5688 hci_stack->le_advertisements_interval_min, 5689 hci_stack->le_advertisements_interval_max, 5690 hci_stack->le_advertisements_channel_map, 5691 hci_stack->le_advertisements_own_addr_type, 5692 hci_stack->le_advertisements_direct_address_type, 5693 hci_stack->le_advertisements_direct_address, 5694 hci_stack->le_advertisements_filter_policy, 5695 0x7f, // tx power: no preference 5696 0x01, // primary adv phy: LE 1M 5697 0, // secondary adv max skip 5698 0, // secondary adv phy 5699 0, // adv sid 5700 0 // scan request notification 5701 ); 5702 } 5703 #endif 5704 { 5705 hci_send_cmd(&hci_le_set_advertising_parameters, 5706 hci_stack->le_advertisements_interval_min, 5707 hci_stack->le_advertisements_interval_max, 5708 hci_stack->le_advertisements_type, 5709 hci_stack->le_advertisements_own_addr_type, 5710 hci_stack->le_advertisements_direct_address_type, 5711 hci_stack->le_advertisements_direct_address, 5712 hci_stack->le_advertisements_channel_map, 5713 hci_stack->le_advertisements_filter_policy); 5714 } 5715 return true; 5716 } 5717 5718 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 5719 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5720 uint8_t adv_data_clean[31]; 5721 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 5722 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 5723 hci_stack->le_advertisements_data_len); 5724 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 5725 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5726 if (hci_extended_advertising_supported()){ 5727 hci_stack->le_advertising_set_in_current_command = 0; 5728 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 5729 } else 5730 #endif 5731 { 5732 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 5733 } 5734 return true; 5735 } 5736 5737 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 5738 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5739 uint8_t scan_data_clean[31]; 5740 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 5741 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 5742 hci_stack->le_scan_response_data_len); 5743 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 5744 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5745 if (hci_extended_advertising_supported()){ 5746 hci_stack->le_advertising_set_in_current_command = 0; 5747 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 5748 } else 5749 #endif 5750 { 5751 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 5752 } 5753 return true; 5754 } 5755 5756 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5757 if (hci_extended_advertising_supported()) { 5758 btstack_linked_list_iterator_t it; 5759 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5760 while (btstack_linked_list_iterator_has_next(&it)){ 5761 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5762 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 5763 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 5764 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5765 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 5766 return true; 5767 } 5768 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 5769 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5770 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 5771 return true; 5772 } 5773 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 5774 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5775 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5776 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5777 advertising_set->advertising_handle, 5778 advertising_set->extended_params.advertising_event_properties, 5779 advertising_set->extended_params.primary_advertising_interval_min, 5780 advertising_set->extended_params.primary_advertising_interval_max, 5781 advertising_set->extended_params.primary_advertising_channel_map, 5782 advertising_set->extended_params.own_address_type, 5783 advertising_set->extended_params.peer_address_type, 5784 advertising_set->extended_params.peer_address, 5785 advertising_set->extended_params.advertising_filter_policy, 5786 advertising_set->extended_params.advertising_tx_power, 5787 advertising_set->extended_params.primary_advertising_phy, 5788 advertising_set->extended_params.secondary_advertising_max_skip, 5789 advertising_set->extended_params.secondary_advertising_phy, 5790 advertising_set->extended_params.advertising_sid, 5791 advertising_set->extended_params.scan_request_notification_enable 5792 ); 5793 return true; 5794 } 5795 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 5796 uint16_t pos = advertising_set->adv_data_pos; 5797 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 5798 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5799 if ((operation & 0x02) != 0){ 5800 // last fragment or complete data 5801 operation |= 2; 5802 advertising_set->adv_data_pos = 0; 5803 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5804 } else { 5805 advertising_set->adv_data_pos += data_to_upload; 5806 } 5807 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5808 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 5809 return true; 5810 } 5811 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 5812 uint16_t pos = advertising_set->scan_data_pos; 5813 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 5814 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5815 if ((operation & 0x02) != 0){ 5816 advertising_set->scan_data_pos = 0; 5817 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5818 } else { 5819 advertising_set->scan_data_pos += data_to_upload; 5820 } 5821 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5822 hci_send_cmd(&hci_le_set_extended_scan_response_data, operation, 0x03, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 5823 return true; 5824 } 5825 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5826 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 5827 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 5828 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5829 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 5830 advertising_set->advertising_handle, 5831 advertising_set->periodic_params.periodic_advertising_interval_min, 5832 advertising_set->periodic_params.periodic_advertising_interval_max, 5833 advertising_set->periodic_params.periodic_advertising_properties); 5834 return true; 5835 } 5836 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 5837 uint16_t pos = advertising_set->periodic_data_pos; 5838 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 5839 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5840 if ((operation & 0x02) != 0){ 5841 // last fragment or complete data 5842 operation |= 2; 5843 advertising_set->periodic_data_pos = 0; 5844 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 5845 } else { 5846 advertising_set->periodic_data_pos += data_to_upload; 5847 } 5848 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5849 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 5850 return true; 5851 } 5852 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5853 } 5854 } 5855 #endif 5856 5857 #endif 5858 5859 #ifdef ENABLE_LE_CENTRAL 5860 // if connect with whitelist was active and is not cancelled yet, wait until next time 5861 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 5862 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5863 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 5864 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 5865 #endif 5866 #endif 5867 5868 // LE Whitelist Management 5869 if (whitelist_modification_pending){ 5870 // add/remove entries 5871 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5872 while (btstack_linked_list_iterator_has_next(&lit)){ 5873 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5874 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5875 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 5876 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 5877 return true; 5878 } 5879 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 5880 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 5881 entry->state |= LE_WHITELIST_ON_CONTROLLER; 5882 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 5883 return true; 5884 } 5885 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 5886 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 5887 btstack_memory_whitelist_entry_free(entry); 5888 } 5889 } 5890 } 5891 5892 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5893 // LE Resolving List Management 5894 if (resolving_list_supported) { 5895 uint16_t i; 5896 switch (hci_stack->le_resolving_list_state) { 5897 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 5898 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 5899 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 5900 return true; 5901 case LE_RESOLVING_LIST_READ_SIZE: 5902 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 5903 hci_send_cmd(&hci_le_read_resolving_list_size); 5904 return true; 5905 case LE_RESOLVING_LIST_SEND_CLEAR: 5906 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 5907 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 5908 sizeof(hci_stack->le_resolving_list_add_entries)); 5909 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 5910 sizeof(hci_stack->le_resolving_list_remove_entries)); 5911 hci_send_cmd(&hci_le_clear_resolving_list); 5912 return true; 5913 case LE_RESOLVING_LIST_REMOVE_ENTRIES: 5914 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5915 uint8_t offset = i >> 3; 5916 uint8_t mask = 1 << (i & 7); 5917 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 5918 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 5919 bd_addr_t peer_identity_addreses; 5920 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5921 sm_key_t peer_irk; 5922 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5923 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5924 5925 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 5926 // trigger whitelist entry 'update' (work around for controller bug) 5927 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5928 while (btstack_linked_list_iterator_has_next(&lit)) { 5929 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 5930 if (entry->address_type != peer_identity_addr_type) continue; 5931 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 5932 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 5933 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 5934 } 5935 #endif 5936 5937 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 5938 peer_identity_addreses); 5939 return true; 5940 } 5941 5942 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_ADD_ENTRIES; 5943 5944 /* fall through */ 5945 5946 case LE_RESOLVING_LIST_ADD_ENTRIES: 5947 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5948 uint8_t offset = i >> 3; 5949 uint8_t mask = 1 << (i & 7); 5950 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 5951 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 5952 bd_addr_t peer_identity_addreses; 5953 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5954 sm_key_t peer_irk; 5955 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5956 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5957 const uint8_t *local_irk = gap_get_persistent_irk(); 5958 // command uses format specifier 'P' that stores 16-byte value without flip 5959 uint8_t local_irk_flipped[16]; 5960 uint8_t peer_irk_flipped[16]; 5961 reverse_128(local_irk, local_irk_flipped); 5962 reverse_128(peer_irk, peer_irk_flipped); 5963 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 5964 peer_irk_flipped, local_irk_flipped); 5965 return true; 5966 } 5967 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5968 break; 5969 5970 default: 5971 break; 5972 } 5973 } 5974 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5975 #endif 5976 5977 #ifdef ENABLE_LE_CENTRAL 5978 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5979 // LE Whitelist Management 5980 if (periodic_list_modification_pending){ 5981 // add/remove entries 5982 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5983 while (btstack_linked_list_iterator_has_next(&lit)){ 5984 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5985 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 5986 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5987 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 5988 return true; 5989 } 5990 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 5991 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5992 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 5993 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 5994 return true; 5995 } 5996 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 5997 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 5998 btstack_memory_periodic_advertiser_list_entry_free(entry); 5999 } 6000 } 6001 } 6002 #endif 6003 #endif 6004 6005 // post-pone all actions until stack is fully working 6006 if (hci_stack->state != HCI_STATE_WORKING) return false; 6007 6008 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6009 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6010 6011 // Phase 4: restore state 6012 6013 #ifdef ENABLE_LE_CENTRAL 6014 // re-start scanning 6015 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6016 hci_stack->le_scanning_active = true; 6017 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6018 if (hci_extended_advertising_supported()){ 6019 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, 0, 0, 0); 6020 } else 6021 #endif 6022 { 6023 hci_send_cmd(&hci_le_set_scan_enable, 1, 0); 6024 } 6025 return true; 6026 } 6027 #endif 6028 6029 #ifdef ENABLE_LE_CENTRAL 6030 // re-start connecting 6031 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6032 bd_addr_t null_addr; 6033 memset(null_addr, 0, 6); 6034 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6035 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6036 hci_send_cmd(&hci_le_create_connection, 6037 hci_stack->le_connection_scan_interval, // scan interval: 60 ms 6038 hci_stack->le_connection_scan_window, // scan interval: 30 ms 6039 1, // use whitelist 6040 0, // peer address type 6041 null_addr, // peer bd addr 6042 hci_stack->le_connection_own_addr_type, // our addr type: 6043 hci_stack->le_connection_interval_min, // conn interval min 6044 hci_stack->le_connection_interval_max, // conn interval max 6045 hci_stack->le_connection_latency, // conn latency 6046 hci_stack->le_supervision_timeout, // conn latency 6047 hci_stack->le_minimum_ce_length, // min ce length 6048 hci_stack->le_maximum_ce_length // max ce length 6049 ); 6050 return true; 6051 } 6052 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6053 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6054 switch(hci_stack->le_periodic_sync_request){ 6055 case LE_CONNECTING_DIRECT: 6056 case LE_CONNECTING_WHITELIST: 6057 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6058 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6059 hci_stack->le_periodic_sync_options, 6060 hci_stack->le_periodic_sync_advertising_sid, 6061 hci_stack->le_periodic_sync_advertiser_address_type, 6062 hci_stack->le_periodic_sync_advertiser_address, 6063 hci_stack->le_periodic_sync_skip, 6064 hci_stack->le_periodic_sync_timeout, 6065 hci_stack->le_periodic_sync_cte_type); 6066 return true; 6067 default: 6068 break; 6069 } 6070 } 6071 #endif 6072 #endif 6073 6074 #ifdef ENABLE_LE_PERIPHERAL 6075 // re-start advertising 6076 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6077 // check if advertisements should be enabled given 6078 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6079 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6080 6081 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6082 if (hci_extended_advertising_supported()){ 6083 const uint8_t advertising_handles[] = { 0 }; 6084 const uint16_t durations[] = { 0 }; 6085 const uint16_t max_events[] = { 0 }; 6086 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6087 } else 6088 #endif 6089 { 6090 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6091 } 6092 return true; 6093 } 6094 6095 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6096 if (hci_extended_advertising_supported()) { 6097 btstack_linked_list_iterator_t it; 6098 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6099 while (btstack_linked_list_iterator_has_next(&it)) { 6100 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6101 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6102 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6103 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6104 const uint16_t durations[] = { advertising_set->enable_timeout }; 6105 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6106 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6107 return true; 6108 } 6109 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6110 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6111 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6112 uint8_t enable = 1; 6113 if (advertising_set->periodic_include_adi){ 6114 enable |= 2; 6115 } 6116 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6117 return true; 6118 } 6119 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6120 } 6121 } 6122 #endif 6123 #endif 6124 6125 return false; 6126 } 6127 6128 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6129 static bool hci_run_iso_tasks(void){ 6130 btstack_linked_list_iterator_t it; 6131 6132 // BIG 6133 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6134 while (btstack_linked_list_iterator_has_next(&it)){ 6135 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6136 switch (big->state){ 6137 case LE_AUDIO_BIG_STATE_CREATE: 6138 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6139 hci_send_cmd(&hci_le_create_big, 6140 big->params->big_handle, 6141 big->params->advertising_handle, 6142 big->params->num_bis, 6143 big->params->sdu_interval_us, 6144 big->params->max_sdu, 6145 big->params->max_transport_latency_ms, 6146 big->params->rtn, 6147 big->params->phy, 6148 big->params->packing, 6149 big->params->framing, 6150 big->params->encryption, 6151 big->params->broadcast_code); 6152 return true; 6153 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6154 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6155 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); 6156 return true; 6157 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6158 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6159 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6160 break; 6161 case LE_AUDIO_BIG_STATE_TERMINATE: 6162 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6163 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6164 return true; 6165 default: 6166 break; 6167 } 6168 } 6169 6170 // BIG Sync 6171 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6172 while (btstack_linked_list_iterator_has_next(&it)){ 6173 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6174 switch (big_sync->state){ 6175 case LE_AUDIO_BIG_STATE_CREATE: 6176 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6177 hci_send_cmd(&hci_le_big_create_sync, 6178 big_sync->params->big_handle, 6179 big_sync->params->sync_handle, 6180 big_sync->params->encryption, 6181 big_sync->params->broadcast_code, 6182 big_sync->params->mse, 6183 big_sync->params->big_sync_timeout_10ms, 6184 big_sync->params->num_bis, 6185 big_sync->params->bis_indices); 6186 return true; 6187 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6188 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6189 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); 6190 return true; 6191 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6192 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6193 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6194 break; 6195 case LE_AUDIO_BIG_STATE_TERMINATE: 6196 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6197 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6198 return true; 6199 default: 6200 break; 6201 } 6202 } 6203 6204 return false; 6205 } 6206 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6207 #endif 6208 6209 static bool hci_run_general_pending_commands(void){ 6210 btstack_linked_item_t * it; 6211 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6212 hci_connection_t * connection = (hci_connection_t *) it; 6213 6214 switch(connection->state){ 6215 case SEND_CREATE_CONNECTION: 6216 switch(connection->address_type){ 6217 #ifdef ENABLE_CLASSIC 6218 case BD_ADDR_TYPE_ACL: 6219 log_info("sending hci_create_connection"); 6220 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6221 break; 6222 #endif 6223 default: 6224 #ifdef ENABLE_BLE 6225 #ifdef ENABLE_LE_CENTRAL 6226 log_info("sending hci_le_create_connection"); 6227 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6228 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6229 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6230 if (hci_extended_advertising_supported()) { 6231 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 6232 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 6233 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 6234 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 6235 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 6236 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 6237 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 6238 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 6239 hci_send_cmd(&hci_le_extended_create_connection, 6240 0, // don't use whitelist 6241 hci_stack->le_connection_own_addr_type, // our addr type: 6242 connection->address_type, // peer address type 6243 connection->address, // peer bd addr 6244 1, // initiating PHY - 1M 6245 le_connection_scan_interval, // conn scan interval 6246 le_connection_scan_window, // conn scan windows 6247 le_connection_interval_min, // conn interval min 6248 le_connection_interval_max, // conn interval max 6249 le_connection_latency, // conn latency 6250 le_supervision_timeout, // conn latency 6251 le_minimum_ce_length, // min ce length 6252 le_maximum_ce_length // max ce length 6253 ); } 6254 else 6255 #endif 6256 { 6257 hci_send_cmd(&hci_le_create_connection, 6258 hci_stack->le_connection_scan_interval, // conn scan interval 6259 hci_stack->le_connection_scan_window, // conn scan windows 6260 0, // don't use whitelist 6261 connection->address_type, // peer address type 6262 connection->address, // peer bd addr 6263 hci_stack->le_connection_own_addr_type, // our addr type: 6264 hci_stack->le_connection_interval_min, // conn interval min 6265 hci_stack->le_connection_interval_max, // conn interval max 6266 hci_stack->le_connection_latency, // conn latency 6267 hci_stack->le_supervision_timeout, // conn latency 6268 hci_stack->le_minimum_ce_length, // min ce length 6269 hci_stack->le_maximum_ce_length // max ce length 6270 ); 6271 } 6272 connection->state = SENT_CREATE_CONNECTION; 6273 #endif 6274 #endif 6275 break; 6276 } 6277 return true; 6278 6279 #ifdef ENABLE_CLASSIC 6280 case RECEIVED_CONNECTION_REQUEST: 6281 connection->role = HCI_ROLE_SLAVE; 6282 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6283 log_info("sending hci_accept_connection_request"); 6284 connection->state = ACCEPTED_CONNECTION_REQUEST; 6285 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6286 return true; 6287 } 6288 break; 6289 #endif 6290 6291 #ifdef ENABLE_BLE 6292 #ifdef ENABLE_LE_CENTRAL 6293 case SEND_CANCEL_CONNECTION: 6294 connection->state = SENT_CANCEL_CONNECTION; 6295 hci_send_cmd(&hci_le_create_connection_cancel); 6296 return true; 6297 #endif 6298 #endif 6299 case SEND_DISCONNECT: 6300 connection->state = SENT_DISCONNECT; 6301 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6302 return true; 6303 6304 default: 6305 break; 6306 } 6307 6308 // no further commands if connection is about to get shut down 6309 if (connection->state == SENT_DISCONNECT) continue; 6310 6311 #ifdef ENABLE_CLASSIC 6312 6313 // Handling link key request requires remote supported features 6314 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6315 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6316 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6317 6318 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6319 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6320 if (have_link_key && security_level_sufficient){ 6321 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6322 } else { 6323 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6324 } 6325 return true; 6326 } 6327 6328 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6329 log_info("denying to pin request"); 6330 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6331 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6332 return true; 6333 } 6334 6335 // security assessment requires remote features 6336 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6337 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6338 hci_ssp_assess_security_on_io_cap_request(connection); 6339 // 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 6340 } 6341 6342 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6343 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6344 // set authentication requirements: 6345 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6346 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6347 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6348 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6349 authreq |= 1; 6350 } 6351 bool bonding = hci_stack->bondable; 6352 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6353 // if we have received IO Cap Response, we're in responder role 6354 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6355 if (bonding && !remote_bonding){ 6356 log_info("Remote not bonding, dropping local flag"); 6357 bonding = false; 6358 } 6359 } 6360 if (bonding){ 6361 if (connection->bonding_flags & BONDING_DEDICATED){ 6362 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6363 } else { 6364 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6365 } 6366 } 6367 uint8_t have_oob_data = 0; 6368 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6369 if (connection->classic_oob_c_192 != NULL){ 6370 have_oob_data |= 1; 6371 } 6372 if (connection->classic_oob_c_256 != NULL){ 6373 have_oob_data |= 2; 6374 } 6375 #endif 6376 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6377 return true; 6378 } 6379 6380 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6381 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6382 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6383 return true; 6384 } 6385 6386 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6387 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6388 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6389 const uint8_t zero[16] = { 0 }; 6390 const uint8_t * r_192 = zero; 6391 const uint8_t * c_192 = zero; 6392 const uint8_t * r_256 = zero; 6393 const uint8_t * c_256 = zero; 6394 // verify P-256 OOB 6395 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6396 c_256 = connection->classic_oob_c_256; 6397 if (connection->classic_oob_r_256 != NULL) { 6398 r_256 = connection->classic_oob_r_256; 6399 } 6400 } 6401 // verify P-192 OOB 6402 if ((connection->classic_oob_c_192 != NULL)) { 6403 c_192 = connection->classic_oob_c_192; 6404 if (connection->classic_oob_r_192 != NULL) { 6405 r_192 = connection->classic_oob_r_192; 6406 } 6407 } 6408 6409 // assess security 6410 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6411 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6412 if (need_level_4 && !can_reach_level_4){ 6413 log_info("Level 4 required, but not possible -> abort"); 6414 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6415 // send oob negative reply 6416 c_256 = NULL; 6417 c_192 = NULL; 6418 } 6419 6420 // Reply 6421 if (c_256 != zero) { 6422 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6423 } else if (c_192 != zero){ 6424 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6425 } else { 6426 hci_stack->classic_oob_con_handle = connection->con_handle; 6427 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6428 } 6429 return true; 6430 } 6431 #endif 6432 6433 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6434 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6435 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6436 return true; 6437 } 6438 6439 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6440 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6441 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6442 return true; 6443 } 6444 6445 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6446 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6447 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6448 return true; 6449 } 6450 6451 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6452 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6453 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6454 connection->state = SENT_DISCONNECT; 6455 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6456 return true; 6457 } 6458 6459 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6460 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6461 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6462 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6463 return true; 6464 } 6465 6466 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6467 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6468 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6469 return true; 6470 } 6471 6472 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 6473 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 6474 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 6475 return true; 6476 } 6477 6478 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 6479 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6480 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 6481 return true; 6482 } 6483 6484 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 6485 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 6486 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 6487 return true; 6488 } 6489 6490 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 6491 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 6492 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 6493 return true; 6494 } 6495 #endif 6496 6497 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 6498 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 6499 #ifdef ENABLE_CLASSIC 6500 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 6501 #endif 6502 if (connection->state != SENT_DISCONNECT){ 6503 connection->state = SENT_DISCONNECT; 6504 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 6505 return true; 6506 } 6507 } 6508 6509 #ifdef ENABLE_CLASSIC 6510 uint16_t sniff_min_interval; 6511 switch (connection->sniff_min_interval){ 6512 case 0: 6513 break; 6514 case 0xffff: 6515 connection->sniff_min_interval = 0; 6516 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 6517 return true; 6518 default: 6519 sniff_min_interval = connection->sniff_min_interval; 6520 connection->sniff_min_interval = 0; 6521 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 6522 return true; 6523 } 6524 6525 if (connection->sniff_subrating_max_latency != 0xffff){ 6526 uint16_t max_latency = connection->sniff_subrating_max_latency; 6527 connection->sniff_subrating_max_latency = 0; 6528 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 6529 return true; 6530 } 6531 6532 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 6533 uint8_t service_type = (uint8_t) connection->qos_service_type; 6534 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 6535 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); 6536 return true; 6537 } 6538 6539 if (connection->request_role != HCI_ROLE_INVALID){ 6540 hci_role_t role = connection->request_role; 6541 connection->request_role = HCI_ROLE_INVALID; 6542 hci_send_cmd(&hci_switch_role_command, connection->address, role); 6543 return true; 6544 } 6545 #endif 6546 6547 if (connection->gap_connection_tasks != 0){ 6548 #ifdef ENABLE_CLASSIC 6549 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6550 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6551 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6552 return true; 6553 } 6554 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6555 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6556 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6557 return true; 6558 } 6559 #endif 6560 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6561 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6562 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6563 return true; 6564 } 6565 } 6566 6567 #ifdef ENABLE_BLE 6568 switch (connection->le_con_parameter_update_state){ 6569 // response to L2CAP CON PARAMETER UPDATE REQUEST 6570 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 6571 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6572 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 6573 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6574 0x0000, 0xffff); 6575 return true; 6576 case CON_PARAMETER_UPDATE_REPLY: 6577 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6578 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 6579 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6580 0x0000, 0xffff); 6581 return true; 6582 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 6583 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6584 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 6585 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 6586 return true; 6587 default: 6588 break; 6589 } 6590 if (connection->le_phy_update_all_phys != 0xffu){ 6591 uint8_t all_phys = connection->le_phy_update_all_phys; 6592 connection->le_phy_update_all_phys = 0xff; 6593 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); 6594 return true; 6595 } 6596 #endif 6597 } 6598 return false; 6599 } 6600 6601 static void hci_run(void){ 6602 6603 // stack state sub statemachines 6604 switch (hci_stack->state) { 6605 case HCI_STATE_INITIALIZING: 6606 hci_initializing_run(); 6607 break; 6608 case HCI_STATE_HALTING: 6609 hci_halting_run(); 6610 break; 6611 case HCI_STATE_FALLING_ASLEEP: 6612 hci_falling_asleep_run(); 6613 break; 6614 default: 6615 break; 6616 } 6617 6618 // allow to run after initialization to working transition 6619 if (hci_stack->state != HCI_STATE_WORKING){ 6620 return; 6621 } 6622 6623 bool done; 6624 6625 // send continuation fragments first, as they block the prepared packet buffer 6626 done = hci_run_acl_fragments(); 6627 if (done) return; 6628 6629 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6630 done = hci_run_iso_fragments(); 6631 if (done) return; 6632 #endif 6633 6634 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 6635 // send host num completed packets next as they don't require num_cmd_packets > 0 6636 if (!hci_can_send_comand_packet_transport()) return; 6637 if (hci_stack->host_completed_packets){ 6638 hci_host_num_completed_packets(); 6639 return; 6640 } 6641 #endif 6642 6643 if (!hci_can_send_command_packet_now()) return; 6644 6645 // global/non-connection oriented commands 6646 6647 6648 #ifdef ENABLE_CLASSIC 6649 // general gap classic 6650 done = hci_run_general_gap_classic(); 6651 if (done) return; 6652 #endif 6653 6654 #ifdef ENABLE_BLE 6655 // general gap le 6656 done = hci_run_general_gap_le(); 6657 if (done) return; 6658 6659 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6660 // ISO related tasks, e.g. BIG create/terminate/sync 6661 done = hci_run_iso_tasks(); 6662 if (done) return; 6663 #endif 6664 #endif 6665 6666 // send pending HCI commands 6667 hci_run_general_pending_commands(); 6668 } 6669 6670 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 6671 // house-keeping 6672 6673 #ifdef ENABLE_CLASSIC 6674 bd_addr_t addr; 6675 hci_connection_t * conn; 6676 #endif 6677 #ifdef ENABLE_LE_CENTRAL 6678 uint8_t initiator_filter_policy; 6679 #endif 6680 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6681 uint8_t i; 6682 uint8_t num_cis; 6683 hci_con_handle_t cis_handle; 6684 uint8_t status; 6685 #endif 6686 6687 uint16_t opcode = little_endian_read_16(packet, 0); 6688 switch (opcode) { 6689 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 6690 hci_stack->loopback_mode = packet[3]; 6691 break; 6692 6693 #ifdef ENABLE_CLASSIC 6694 case HCI_OPCODE_HCI_CREATE_CONNECTION: 6695 reverse_bd_addr(&packet[3], addr); 6696 log_info("Create_connection to %s", bd_addr_to_str(addr)); 6697 6698 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 6699 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 6700 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 6701 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 6702 } 6703 6704 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6705 if (!conn) { 6706 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6707 if (!conn) { 6708 // notify client that alloc failed 6709 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 6710 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 6711 } 6712 conn->state = SEND_CREATE_CONNECTION; 6713 conn->role = HCI_ROLE_MASTER; 6714 } 6715 6716 log_info("conn state %u", conn->state); 6717 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 6718 switch (conn->state) { 6719 // if connection active exists 6720 case OPEN: 6721 // and OPEN, emit connection complete command 6722 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 6723 // packet not sent to controller 6724 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6725 case RECEIVED_DISCONNECTION_COMPLETE: 6726 // create connection triggered in disconnect complete event, let's do it now 6727 break; 6728 case SEND_CREATE_CONNECTION: 6729 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 6730 if (hci_classic_operation_active()){ 6731 return ERROR_CODE_SUCCESS; 6732 } 6733 #endif 6734 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 6735 break; 6736 default: 6737 // otherwise, just ignore as it is already in the open process 6738 // packet not sent to controller 6739 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6740 } 6741 conn->state = SENT_CREATE_CONNECTION; 6742 6743 // track outgoing connection 6744 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 6745 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 6746 break; 6747 6748 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 6749 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 6750 // setup_synchronous_connection? Voice setting at offset 22 6751 // TODO: compare to current setting if sco connection already active 6752 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 6753 break; 6754 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 6755 // accept_synchronous_connection? Voice setting at offset 18 6756 // TODO: compare to current setting if sco connection already active 6757 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 6758 // track outgoing connection 6759 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 6760 reverse_bd_addr(&packet[3], hci_stack->outgoing_addr); 6761 break; 6762 #endif 6763 #endif 6764 6765 #ifdef ENABLE_BLE 6766 #ifdef ENABLE_LE_CENTRAL 6767 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 6768 // white list used? 6769 initiator_filter_policy = packet[7]; 6770 switch (initiator_filter_policy) { 6771 case 0: 6772 // whitelist not used 6773 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 6774 break; 6775 case 1: 6776 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 6777 break; 6778 default: 6779 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 6780 break; 6781 } 6782 // track outgoing connection 6783 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer addres type 6784 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 6785 break; 6786 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 6787 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 6788 break; 6789 #endif 6790 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6791 #ifdef ENABLE_LE_CENTRAL 6792 case HCI_OPCODE_HCI_LE_CREATE_CIS: 6793 status = ERROR_CODE_SUCCESS; 6794 num_cis = packet[3]; 6795 // setup hci_iso_streams 6796 for (i=0;i<num_cis;i++){ 6797 cis_handle = (hci_con_handle_t) little_endian_read_16(packet, 4 + (4 * i)); 6798 status = hci_iso_stream_create(cis_handle, 0xff); 6799 if (status != ERROR_CODE_SUCCESS) { 6800 break; 6801 } 6802 } 6803 // free structs on error 6804 if (status != ERROR_CODE_SUCCESS){ 6805 hci_iso_stream_requested_finalize(0xff); 6806 return status; 6807 } 6808 break; 6809 #endif /* ENABLE_LE_CENTRAL */ 6810 #ifdef ENABLE_LE_PERIPHERAL 6811 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 6812 cis_handle = (hci_con_handle_t) little_endian_read_16(packet, 3); 6813 status = hci_iso_stream_create(cis_handle, 0xff); 6814 if (status != ERROR_CODE_SUCCESS){ 6815 return status; 6816 } 6817 break; 6818 #endif /* ENABLE_LE_PERIPHERAL */ 6819 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6820 #endif /* ENABLE_BLE */ 6821 default: 6822 break; 6823 } 6824 6825 hci_stack->num_cmd_packets--; 6826 6827 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 6828 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 6829 if (err != 0){ 6830 return ERROR_CODE_HARDWARE_FAILURE; 6831 } 6832 return ERROR_CODE_SUCCESS; 6833 } 6834 6835 // disconnect because of security block 6836 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 6837 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6838 if (!connection) return; 6839 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 6840 } 6841 6842 6843 // Configure Secure Simple Pairing 6844 6845 #ifdef ENABLE_CLASSIC 6846 6847 // enable will enable SSP during init 6848 void gap_ssp_set_enable(int enable){ 6849 hci_stack->ssp_enable = enable; 6850 } 6851 6852 static int hci_local_ssp_activated(void){ 6853 return gap_ssp_supported() && hci_stack->ssp_enable; 6854 } 6855 6856 // if set, BTstack will respond to io capability request using authentication requirement 6857 void gap_ssp_set_io_capability(int io_capability){ 6858 hci_stack->ssp_io_capability = io_capability; 6859 } 6860 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 6861 hci_stack->ssp_authentication_requirement = authentication_requirement; 6862 } 6863 6864 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 6865 void gap_ssp_set_auto_accept(int auto_accept){ 6866 hci_stack->ssp_auto_accept = auto_accept; 6867 } 6868 6869 void gap_secure_connections_enable(bool enable){ 6870 hci_stack->secure_connections_enable = enable; 6871 } 6872 bool gap_secure_connections_active(void){ 6873 return hci_stack->secure_connections_active; 6874 } 6875 6876 #endif 6877 6878 // va_list part of hci_send_cmd 6879 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 6880 if (!hci_can_send_command_packet_now()){ 6881 log_error("hci_send_cmd called but cannot send packet now"); 6882 return ERROR_CODE_COMMAND_DISALLOWED; 6883 } 6884 6885 // for HCI INITIALIZATION 6886 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 6887 hci_stack->last_cmd_opcode = cmd->opcode; 6888 6889 hci_reserve_packet_buffer(); 6890 uint8_t * packet = hci_stack->hci_packet_buffer; 6891 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 6892 uint8_t status = hci_send_cmd_packet(packet, size); 6893 6894 // release packet buffer on error or for synchronous transport implementations 6895 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 6896 hci_release_packet_buffer(); 6897 hci_emit_transport_packet_sent(); 6898 } 6899 6900 return status; 6901 } 6902 6903 /** 6904 * pre: numcmds >= 0 - it's allowed to send a command to the controller 6905 */ 6906 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 6907 va_list argptr; 6908 va_start(argptr, cmd); 6909 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 6910 va_end(argptr); 6911 return status; 6912 } 6913 6914 // Create various non-HCI events. 6915 // TODO: generalize, use table similar to hci_create_command 6916 6917 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 6918 // dump packet 6919 if (dump) { 6920 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 6921 } 6922 6923 // dispatch to all event handlers 6924 btstack_linked_list_iterator_t it; 6925 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 6926 while (btstack_linked_list_iterator_has_next(&it)){ 6927 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 6928 entry->callback(HCI_EVENT_PACKET, 0, event, size); 6929 } 6930 } 6931 6932 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 6933 if (!hci_stack->acl_packet_handler) return; 6934 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 6935 } 6936 6937 #ifdef ENABLE_CLASSIC 6938 static void hci_notify_if_sco_can_send_now(void){ 6939 // notify SCO sender if waiting 6940 if (!hci_stack->sco_waiting_for_can_send_now) return; 6941 if (hci_can_send_sco_packet_now()){ 6942 hci_stack->sco_waiting_for_can_send_now = 0; 6943 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 6944 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 6945 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 6946 } 6947 } 6948 6949 // parsing end emitting has been merged to reduce code size 6950 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 6951 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 6952 6953 uint8_t * eir_data; 6954 ad_context_t context; 6955 const uint8_t * name; 6956 uint8_t name_len; 6957 6958 if (size < 3) return; 6959 6960 int event_type = hci_event_packet_get_type(packet); 6961 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 6962 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 6963 6964 switch (event_type){ 6965 case HCI_EVENT_INQUIRY_RESULT: 6966 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6967 if (size != (3 + (num_responses * 14))) return; 6968 break; 6969 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 6970 if (size != 257) return; 6971 if (num_responses != 1) return; 6972 break; 6973 default: 6974 return; 6975 } 6976 6977 // event[1] is set at the end 6978 int i; 6979 for (i=0; i<num_responses;i++){ 6980 memset(event, 0, sizeof(event)); 6981 event[0] = GAP_EVENT_INQUIRY_RESULT; 6982 uint8_t event_size = 27; // if name is not set by EIR 6983 6984 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 6985 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 6986 (void)memcpy(&event[9], 6987 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 6988 3); // class of device 6989 (void)memcpy(&event[12], 6990 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 6991 2); // clock offset 6992 6993 switch (event_type){ 6994 case HCI_EVENT_INQUIRY_RESULT: 6995 // 14,15,16,17 = 0, size 18 6996 break; 6997 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6998 event[14] = 1; 6999 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7000 // 16,17 = 0, size 18 7001 break; 7002 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7003 event[14] = 1; 7004 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7005 // EIR packets only contain a single inquiry response 7006 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7007 name = NULL; 7008 // Iterate over EIR data 7009 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7010 uint8_t data_type = ad_iterator_get_data_type(&context); 7011 uint8_t data_size = ad_iterator_get_data_len(&context); 7012 const uint8_t * data = ad_iterator_get_data(&context); 7013 // Prefer Complete Local Name over Shortened Local Name 7014 switch (data_type){ 7015 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7016 if (name) continue; 7017 /* fall through */ 7018 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7019 name = data; 7020 name_len = data_size; 7021 break; 7022 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7023 if (data_size != 8) break; 7024 event[16] = 1; 7025 memcpy(&event[17], data, 8); 7026 break; 7027 default: 7028 break; 7029 } 7030 } 7031 if (name){ 7032 event[25] = 1; 7033 // truncate name if needed 7034 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7035 event[26] = len; 7036 (void)memcpy(&event[27], name, len); 7037 event_size += len; 7038 } 7039 break; 7040 default: 7041 return; 7042 } 7043 event[1] = event_size - 2; 7044 hci_emit_event(event, event_size, 1); 7045 } 7046 } 7047 #endif 7048 7049 void hci_emit_state(void){ 7050 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7051 uint8_t event[3]; 7052 event[0] = BTSTACK_EVENT_STATE; 7053 event[1] = sizeof(event) - 2u; 7054 event[2] = hci_stack->state; 7055 hci_emit_event(event, sizeof(event), 1); 7056 } 7057 7058 #ifdef ENABLE_CLASSIC 7059 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7060 uint8_t event[13]; 7061 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7062 event[1] = sizeof(event) - 2; 7063 event[2] = status; 7064 little_endian_store_16(event, 3, con_handle); 7065 reverse_bd_addr(address, &event[5]); 7066 event[11] = 1; // ACL connection 7067 event[12] = 0; // encryption disabled 7068 hci_emit_event(event, sizeof(event), 1); 7069 } 7070 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7071 if (disable_l2cap_timeouts) return; 7072 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7073 uint8_t event[4]; 7074 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7075 event[1] = sizeof(event) - 2; 7076 little_endian_store_16(event, 2, conn->con_handle); 7077 hci_emit_event(event, sizeof(event), 1); 7078 } 7079 #endif 7080 7081 #ifdef ENABLE_BLE 7082 #ifdef ENABLE_LE_CENTRAL 7083 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){ 7084 uint8_t event[21]; 7085 event[0] = HCI_EVENT_LE_META; 7086 event[1] = sizeof(event) - 2u; 7087 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7088 event[3] = status; 7089 little_endian_store_16(event, 4, con_handle); 7090 event[6] = 0; // TODO: role 7091 event[7] = address_type; 7092 reverse_bd_addr(address, &event[8]); 7093 little_endian_store_16(event, 14, 0); // interval 7094 little_endian_store_16(event, 16, 0); // latency 7095 little_endian_store_16(event, 18, 0); // supervision timeout 7096 event[20] = 0; // master clock accuracy 7097 hci_emit_event(event, sizeof(event), 1); 7098 } 7099 #endif 7100 #endif 7101 7102 static void hci_emit_transport_packet_sent(void){ 7103 // notify upper stack that it might be possible to send again 7104 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7105 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7106 } 7107 7108 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7109 uint8_t event[6]; 7110 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7111 event[1] = sizeof(event) - 2u; 7112 event[2] = 0; // status = OK 7113 little_endian_store_16(event, 3, con_handle); 7114 event[5] = reason; 7115 hci_emit_event(event, sizeof(event), 1); 7116 } 7117 7118 static void hci_emit_nr_connections_changed(void){ 7119 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7120 uint8_t event[3]; 7121 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7122 event[1] = sizeof(event) - 2u; 7123 event[2] = nr_hci_connections(); 7124 hci_emit_event(event, sizeof(event), 1); 7125 } 7126 7127 static void hci_emit_hci_open_failed(void){ 7128 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7129 uint8_t event[2]; 7130 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7131 event[1] = sizeof(event) - 2u; 7132 hci_emit_event(event, sizeof(event), 1); 7133 } 7134 7135 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7136 log_info("hci_emit_dedicated_bonding_result %u ", status); 7137 uint8_t event[9]; 7138 int pos = 0; 7139 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7140 event[pos++] = sizeof(event) - 2u; 7141 event[pos++] = status; 7142 reverse_bd_addr(address, &event[pos]); 7143 hci_emit_event(event, sizeof(event), 1); 7144 } 7145 7146 7147 #ifdef ENABLE_CLASSIC 7148 7149 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7150 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7151 uint8_t event[5]; 7152 int pos = 0; 7153 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7154 event[pos++] = sizeof(event) - 2; 7155 little_endian_store_16(event, 2, con_handle); 7156 pos += 2; 7157 event[pos++] = level; 7158 hci_emit_event(event, sizeof(event), 1); 7159 } 7160 7161 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7162 if (!connection) return LEVEL_0; 7163 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7164 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7165 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7166 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7167 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7168 // LEVEL 4 always requires 128 bit encrytion key size 7169 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7170 security_level = LEVEL_3; 7171 } 7172 return security_level; 7173 } 7174 7175 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7176 uint8_t event[4]; 7177 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7178 event[1] = sizeof(event) - 2; 7179 event[2] = discoverable; 7180 event[3] = connectable; 7181 hci_emit_event(event, sizeof(event), 1); 7182 } 7183 7184 // query if remote side supports eSCO 7185 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7186 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7187 if (!connection) return false; 7188 return (connection->remote_supported_features[0] & 1) != 0; 7189 } 7190 7191 static bool hci_ssp_supported(hci_connection_t * connection){ 7192 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7193 return (connection->bonding_flags & mask) == mask; 7194 } 7195 7196 // query if remote side supports SSP 7197 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7198 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7199 if (!connection) return false; 7200 return hci_ssp_supported(connection) ? 1 : 0; 7201 } 7202 7203 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7204 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7205 } 7206 7207 /** 7208 * Check if remote supported features query has completed 7209 */ 7210 bool hci_remote_features_available(hci_con_handle_t handle){ 7211 hci_connection_t * connection = hci_connection_for_handle(handle); 7212 if (!connection) return false; 7213 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7214 } 7215 7216 /** 7217 * Trigger remote supported features query 7218 */ 7219 7220 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7221 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7222 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7223 } 7224 } 7225 7226 void hci_remote_features_query(hci_con_handle_t con_handle){ 7227 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7228 if (!connection) return; 7229 hci_trigger_remote_features_for_connection(connection); 7230 hci_run(); 7231 } 7232 7233 // GAP API 7234 /** 7235 * @bbrief enable/disable bonding. default is enabled 7236 * @praram enabled 7237 */ 7238 void gap_set_bondable_mode(int enable){ 7239 hci_stack->bondable = enable ? 1 : 0; 7240 } 7241 /** 7242 * @brief Get bondable mode. 7243 * @return 1 if bondable 7244 */ 7245 int gap_get_bondable_mode(void){ 7246 return hci_stack->bondable; 7247 } 7248 7249 /** 7250 * @brief map link keys to security levels 7251 */ 7252 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7253 switch (link_key_type){ 7254 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7255 return LEVEL_4; 7256 case COMBINATION_KEY: 7257 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7258 return LEVEL_3; 7259 default: 7260 return LEVEL_2; 7261 } 7262 } 7263 7264 /** 7265 * @brief map link keys to secure connection yes/no 7266 */ 7267 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7268 switch (link_key_type){ 7269 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7270 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7271 return true; 7272 default: 7273 return false; 7274 } 7275 } 7276 7277 /** 7278 * @brief map link keys to authenticated 7279 */ 7280 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7281 switch (link_key_type){ 7282 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7283 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7284 return true; 7285 default: 7286 return false; 7287 } 7288 } 7289 7290 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7291 log_info("gap_mitm_protection_required_for_security_level %u", level); 7292 return level > LEVEL_2; 7293 } 7294 7295 /** 7296 * @brief get current security level 7297 */ 7298 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7299 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7300 if (!connection) return LEVEL_0; 7301 return gap_security_level_for_connection(connection); 7302 } 7303 7304 /** 7305 * @brief request connection to device to 7306 * @result GAP_AUTHENTICATION_RESULT 7307 */ 7308 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7309 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7310 if (!connection){ 7311 hci_emit_security_level(con_handle, LEVEL_0); 7312 return; 7313 } 7314 7315 btstack_assert(hci_is_le_connection(connection) == false); 7316 7317 // 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) 7318 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7319 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7320 requested_level = LEVEL_4; 7321 } 7322 7323 gap_security_level_t current_level = gap_security_level(con_handle); 7324 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7325 requested_level, connection->requested_security_level, current_level); 7326 7327 // authentication active if authentication request was sent or planned level > 0 7328 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7329 if (authentication_active){ 7330 // authentication already active 7331 if (connection->requested_security_level < requested_level){ 7332 // increase requested level as new level is higher 7333 // TODO: handle re-authentication when done 7334 connection->requested_security_level = requested_level; 7335 } 7336 } else { 7337 // no request active, notify if security sufficient 7338 if (requested_level <= current_level){ 7339 hci_emit_security_level(con_handle, current_level); 7340 return; 7341 } 7342 7343 // store request 7344 connection->requested_security_level = requested_level; 7345 7346 // start to authenticate connection 7347 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7348 7349 // request remote features if not already active, also trigger hci_run 7350 hci_remote_features_query(con_handle); 7351 } 7352 } 7353 7354 /** 7355 * @brief start dedicated bonding with device. disconnect after bonding 7356 * @param device 7357 * @param request MITM protection 7358 * @result GAP_DEDICATED_BONDING_COMPLETE 7359 */ 7360 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7361 7362 // create connection state machine 7363 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7364 7365 if (!connection){ 7366 return BTSTACK_MEMORY_ALLOC_FAILED; 7367 } 7368 7369 // delete linkn key 7370 gap_drop_link_key_for_bd_addr(device); 7371 7372 // configure LEVEL_2/3, dedicated bonding 7373 connection->state = SEND_CREATE_CONNECTION; 7374 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7375 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7376 connection->bonding_flags = BONDING_DEDICATED; 7377 7378 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7379 7380 // handle: connnection failure (connection complete != ok) 7381 // handle: authentication failure 7382 // handle: disconnect on done 7383 7384 hci_run(); 7385 7386 return 0; 7387 } 7388 7389 void gap_set_local_name(const char * local_name){ 7390 hci_stack->local_name = local_name; 7391 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7392 // also update EIR if not set by user 7393 if (hci_stack->eir_data == NULL){ 7394 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7395 } 7396 hci_run(); 7397 } 7398 #endif 7399 7400 7401 #ifdef ENABLE_BLE 7402 7403 #ifdef ENABLE_LE_CENTRAL 7404 void gap_start_scan(void){ 7405 hci_stack->le_scanning_enabled = true; 7406 hci_run(); 7407 } 7408 7409 void gap_stop_scan(void){ 7410 hci_stack->le_scanning_enabled = false; 7411 hci_run(); 7412 } 7413 7414 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7415 hci_stack->le_scan_type = scan_type; 7416 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7417 hci_stack->le_scan_interval = scan_interval; 7418 hci_stack->le_scan_window = scan_window; 7419 hci_stack->le_scanning_param_update = true; 7420 hci_run(); 7421 } 7422 7423 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7424 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 7425 } 7426 7427 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 7428 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 7429 if (!conn){ 7430 // disallow if le connection is already outgoing 7431 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7432 log_error("le connection already active"); 7433 return ERROR_CODE_COMMAND_DISALLOWED; 7434 } 7435 7436 log_info("gap_connect: no connection exists yet, creating context"); 7437 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 7438 if (!conn){ 7439 // notify client that alloc failed 7440 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7441 log_info("gap_connect: failed to alloc hci_connection_t"); 7442 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 7443 } 7444 7445 // set le connecting state 7446 if (hci_is_le_connection_type(addr_type)){ 7447 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 7448 } 7449 7450 conn->state = SEND_CREATE_CONNECTION; 7451 log_info("gap_connect: send create connection next"); 7452 hci_run(); 7453 return ERROR_CODE_SUCCESS; 7454 } 7455 7456 if (!hci_is_le_connection(conn) || 7457 (conn->state == SEND_CREATE_CONNECTION) || 7458 (conn->state == SENT_CREATE_CONNECTION)) { 7459 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 7460 log_error("gap_connect: classic connection or connect is already being created"); 7461 return GATT_CLIENT_IN_WRONG_STATE; 7462 } 7463 7464 // check if connection was just disconnected 7465 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7466 log_info("gap_connect: send create connection (again)"); 7467 conn->state = SEND_CREATE_CONNECTION; 7468 hci_run(); 7469 return ERROR_CODE_SUCCESS; 7470 } 7471 7472 log_info("gap_connect: context exists with state %u", conn->state); 7473 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 7474 hci_run(); 7475 return ERROR_CODE_SUCCESS; 7476 } 7477 7478 // @assumption: only a single outgoing LE Connection exists 7479 static hci_connection_t * gap_get_outgoing_connection(void){ 7480 btstack_linked_item_t *it; 7481 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7482 hci_connection_t * conn = (hci_connection_t *) it; 7483 if (!hci_is_le_connection(conn)) continue; 7484 switch (conn->state){ 7485 case SEND_CREATE_CONNECTION: 7486 case SENT_CREATE_CONNECTION: 7487 case SENT_CANCEL_CONNECTION: 7488 return conn; 7489 default: 7490 break; 7491 }; 7492 } 7493 return NULL; 7494 } 7495 7496 uint8_t gap_connect_cancel(void){ 7497 hci_connection_t * conn; 7498 switch (hci_stack->le_connecting_request){ 7499 case LE_CONNECTING_IDLE: 7500 break; 7501 case LE_CONNECTING_WHITELIST: 7502 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7503 hci_run(); 7504 break; 7505 case LE_CONNECTING_DIRECT: 7506 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7507 conn = gap_get_outgoing_connection(); 7508 if (conn == NULL){ 7509 hci_run(); 7510 } else { 7511 switch (conn->state){ 7512 case SEND_CREATE_CONNECTION: 7513 // skip sending create connection and emit event instead 7514 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 7515 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 7516 btstack_memory_hci_connection_free( conn ); 7517 break; 7518 case SENT_CREATE_CONNECTION: 7519 // request to send cancel connection 7520 conn->state = SEND_CANCEL_CONNECTION; 7521 hci_run(); 7522 break; 7523 default: 7524 break; 7525 } 7526 } 7527 break; 7528 default: 7529 btstack_unreachable(); 7530 break; 7531 } 7532 return ERROR_CODE_SUCCESS; 7533 } 7534 7535 /** 7536 * @brief Set connection parameters for outgoing connections 7537 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 7538 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 7539 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 7540 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 7541 * @param conn_latency, default: 4 7542 * @param supervision_timeout (unit: 10ms), default: 720 ms 7543 * @param min_ce_length (unit: 0.625ms), default: 10 ms 7544 * @param max_ce_length (unit: 0.625ms), default: 30 ms 7545 */ 7546 7547 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 7548 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 7549 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 7550 hci_stack->le_connection_scan_interval = conn_scan_interval; 7551 hci_stack->le_connection_scan_window = conn_scan_window; 7552 hci_stack->le_connection_interval_min = conn_interval_min; 7553 hci_stack->le_connection_interval_max = conn_interval_max; 7554 hci_stack->le_connection_latency = conn_latency; 7555 hci_stack->le_supervision_timeout = supervision_timeout; 7556 hci_stack->le_minimum_ce_length = min_ce_length; 7557 hci_stack->le_maximum_ce_length = max_ce_length; 7558 } 7559 #endif 7560 7561 /** 7562 * @brief Updates the connection parameters for a given LE connection 7563 * @param handle 7564 * @param conn_interval_min (unit: 1.25ms) 7565 * @param conn_interval_max (unit: 1.25ms) 7566 * @param conn_latency 7567 * @param supervision_timeout (unit: 10ms) 7568 * @return 0 if ok 7569 */ 7570 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7571 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7572 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7573 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7574 connection->le_conn_interval_min = conn_interval_min; 7575 connection->le_conn_interval_max = conn_interval_max; 7576 connection->le_conn_latency = conn_latency; 7577 connection->le_supervision_timeout = supervision_timeout; 7578 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 7579 hci_run(); 7580 return 0; 7581 } 7582 7583 /** 7584 * @brief Request an update of the connection parameter for a given LE connection 7585 * @param handle 7586 * @param conn_interval_min (unit: 1.25ms) 7587 * @param conn_interval_max (unit: 1.25ms) 7588 * @param conn_latency 7589 * @param supervision_timeout (unit: 10ms) 7590 * @return 0 if ok 7591 */ 7592 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7593 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7594 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7595 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7596 connection->le_conn_interval_min = conn_interval_min; 7597 connection->le_conn_interval_max = conn_interval_max; 7598 connection->le_conn_latency = conn_latency; 7599 connection->le_supervision_timeout = supervision_timeout; 7600 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 7601 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 7602 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 7603 return 0; 7604 } 7605 7606 #ifdef ENABLE_LE_PERIPHERAL 7607 7608 /** 7609 * @brief Set Advertisement Data 7610 * @param advertising_data_length 7611 * @param advertising_data (max 31 octets) 7612 * @note data is not copied, pointer has to stay valid 7613 */ 7614 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 7615 hci_stack->le_advertisements_data_len = advertising_data_length; 7616 hci_stack->le_advertisements_data = advertising_data; 7617 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7618 hci_run(); 7619 } 7620 7621 /** 7622 * @brief Set Scan Response Data 7623 * @param advertising_data_length 7624 * @param advertising_data (max 31 octets) 7625 * @note data is not copied, pointer has to stay valid 7626 */ 7627 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 7628 hci_stack->le_scan_response_data_len = scan_response_data_length; 7629 hci_stack->le_scan_response_data = scan_response_data; 7630 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7631 hci_run(); 7632 } 7633 7634 /** 7635 * @brief Set Advertisement Parameters 7636 * @param adv_int_min 7637 * @param adv_int_max 7638 * @param adv_type 7639 * @param direct_address_type 7640 * @param direct_address 7641 * @param channel_map 7642 * @param filter_policy 7643 * 7644 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 7645 */ 7646 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 7647 uint8_t direct_address_typ, bd_addr_t direct_address, 7648 uint8_t channel_map, uint8_t filter_policy) { 7649 7650 hci_stack->le_advertisements_interval_min = adv_int_min; 7651 hci_stack->le_advertisements_interval_max = adv_int_max; 7652 hci_stack->le_advertisements_type = adv_type; 7653 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 7654 hci_stack->le_advertisements_channel_map = channel_map; 7655 hci_stack->le_advertisements_filter_policy = filter_policy; 7656 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 7657 6); 7658 7659 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7660 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 7661 hci_run(); 7662 } 7663 7664 /** 7665 * @brief Enable/Disable Advertisements 7666 * @param enabled 7667 */ 7668 void gap_advertisements_enable(int enabled){ 7669 if (enabled == 0){ 7670 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7671 } else { 7672 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 7673 } 7674 hci_update_advertisements_enabled_for_current_roles(); 7675 hci_run(); 7676 } 7677 7678 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7679 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 7680 btstack_linked_list_iterator_t it; 7681 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 7682 while (btstack_linked_list_iterator_has_next(&it)){ 7683 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 7684 if ( item->advertising_handle == advertising_handle ) { 7685 return item; 7686 } 7687 } 7688 return NULL; 7689 } 7690 7691 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 7692 // find free advertisement handle 7693 uint8_t advertisement_handle; 7694 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 7695 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 7696 } 7697 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7698 // clear 7699 memset(storage, 0, sizeof(le_advertising_set_t)); 7700 // copy params 7701 storage->advertising_handle = advertisement_handle; 7702 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7703 // add to list 7704 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 7705 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7706 *out_advertising_handle = advertisement_handle; 7707 // set tasks and start 7708 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7709 hci_run(); 7710 return ERROR_CODE_SUCCESS; 7711 } 7712 7713 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 7714 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7715 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7716 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7717 // set tasks and start 7718 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7719 hci_run(); 7720 return ERROR_CODE_SUCCESS; 7721 } 7722 7723 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 7724 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7725 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7726 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 7727 return ERROR_CODE_SUCCESS; 7728 } 7729 7730 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 7731 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7732 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7733 memcpy(advertising_set->random_address, random_address, 6); 7734 // set tasks and start 7735 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7736 hci_run(); 7737 return ERROR_CODE_SUCCESS; 7738 } 7739 7740 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 7741 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7742 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7743 advertising_set->adv_data = advertising_data; 7744 advertising_set->adv_data_len = advertising_data_length; 7745 // set tasks and start 7746 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7747 hci_run(); 7748 return ERROR_CODE_SUCCESS; 7749 } 7750 7751 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){ 7752 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7753 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7754 advertising_set->scan_data = scan_response_data; 7755 advertising_set->scan_data_len = scan_response_data_length; 7756 // set tasks and start 7757 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7758 hci_run(); 7759 return ERROR_CODE_SUCCESS; 7760 } 7761 7762 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 7763 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7764 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7765 advertising_set->enable_timeout = timeout; 7766 advertising_set->enable_max_scan_events = num_extended_advertising_events; 7767 // set tasks and start 7768 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 7769 hci_run(); 7770 return ERROR_CODE_SUCCESS; 7771 } 7772 7773 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 7774 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7775 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7776 // set tasks and start 7777 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7778 hci_run(); 7779 return ERROR_CODE_SUCCESS; 7780 } 7781 7782 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 7783 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7784 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7785 // set tasks and start 7786 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 7787 hci_run(); 7788 return ERROR_CODE_SUCCESS; 7789 } 7790 7791 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7792 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 7793 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7794 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7795 // periodic advertising requires neither connectable, scannable, legacy or anonymous 7796 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7797 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 7798 // set tasks and start 7799 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 7800 hci_run(); 7801 return ERROR_CODE_SUCCESS; 7802 } 7803 7804 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 7805 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7806 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7807 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 7808 return ERROR_CODE_SUCCESS; 7809 } 7810 7811 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 7812 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7813 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7814 advertising_set->periodic_data = periodic_data; 7815 advertising_set->periodic_data_len = periodic_data_length; 7816 // set tasks and start 7817 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 7818 hci_run(); 7819 return ERROR_CODE_SUCCESS; 7820 } 7821 7822 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 7823 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7824 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7825 // set tasks and start 7826 advertising_set->periodic_include_adi = include_adi; 7827 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7828 hci_run(); 7829 return ERROR_CODE_SUCCESS; 7830 } 7831 7832 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 7833 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7834 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7835 // set tasks and start 7836 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7837 hci_run(); 7838 return ERROR_CODE_SUCCESS; 7839 } 7840 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 7841 7842 #endif 7843 7844 #endif 7845 7846 void hci_le_set_own_address_type(uint8_t own_address_type){ 7847 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 7848 if (own_address_type == hci_stack->le_own_addr_type) return; 7849 hci_stack->le_own_addr_type = own_address_type; 7850 7851 #ifdef ENABLE_LE_PERIPHERAL 7852 // update advertisement parameters, too 7853 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7854 hci_run(); 7855 #endif 7856 #ifdef ENABLE_LE_CENTRAL 7857 // note: we don't update scan parameters or modify ongoing connection attempts 7858 #endif 7859 } 7860 7861 void hci_le_random_address_set(const bd_addr_t random_address){ 7862 memcpy(hci_stack->le_random_address, random_address, 6); 7863 hci_stack->le_random_address_set = true; 7864 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7865 hci_run(); 7866 } 7867 7868 #endif 7869 7870 uint8_t gap_disconnect(hci_con_handle_t handle){ 7871 hci_connection_t * conn = hci_connection_for_handle(handle); 7872 if (!conn){ 7873 hci_emit_disconnection_complete(handle, 0); 7874 return 0; 7875 } 7876 // ignore if already disconnected 7877 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7878 return 0; 7879 } 7880 conn->state = SEND_DISCONNECT; 7881 hci_run(); 7882 return 0; 7883 } 7884 7885 int gap_read_rssi(hci_con_handle_t con_handle){ 7886 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7887 if (hci_connection == NULL) return 0; 7888 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 7889 hci_run(); 7890 return 1; 7891 } 7892 7893 /** 7894 * @brief Get connection type 7895 * @param con_handle 7896 * @result connection_type 7897 */ 7898 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 7899 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7900 if (!conn) return GAP_CONNECTION_INVALID; 7901 switch (conn->address_type){ 7902 case BD_ADDR_TYPE_LE_PUBLIC: 7903 case BD_ADDR_TYPE_LE_RANDOM: 7904 return GAP_CONNECTION_LE; 7905 case BD_ADDR_TYPE_SCO: 7906 return GAP_CONNECTION_SCO; 7907 case BD_ADDR_TYPE_ACL: 7908 return GAP_CONNECTION_ACL; 7909 default: 7910 return GAP_CONNECTION_INVALID; 7911 } 7912 } 7913 7914 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 7915 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7916 if (!conn) return HCI_ROLE_INVALID; 7917 return (hci_role_t) conn->role; 7918 } 7919 7920 7921 #ifdef ENABLE_CLASSIC 7922 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 7923 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7924 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7925 conn->request_role = role; 7926 hci_run(); 7927 return ERROR_CODE_SUCCESS; 7928 } 7929 #endif 7930 7931 #ifdef ENABLE_BLE 7932 7933 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){ 7934 hci_connection_t * conn = hci_connection_for_handle(con_handle); 7935 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7936 7937 conn->le_phy_update_all_phys = all_phys; 7938 conn->le_phy_update_tx_phys = tx_phys; 7939 conn->le_phy_update_rx_phys = rx_phys; 7940 conn->le_phy_update_phy_options = phy_options; 7941 7942 hci_run(); 7943 7944 return 0; 7945 } 7946 7947 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 7948 // check if already in list 7949 btstack_linked_list_iterator_t it; 7950 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7951 while (btstack_linked_list_iterator_has_next(&it)) { 7952 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 7953 if (entry->address_type != address_type) { 7954 continue; 7955 } 7956 if (memcmp(entry->address, address, 6) != 0) { 7957 continue; 7958 } 7959 // disallow if already scheduled to add 7960 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 7961 return ERROR_CODE_COMMAND_DISALLOWED; 7962 } 7963 // still on controller, but scheduled to remove -> re-add 7964 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 7965 return ERROR_CODE_SUCCESS; 7966 } 7967 // alloc and add to list 7968 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 7969 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 7970 entry->address_type = address_type; 7971 (void)memcpy(entry->address, address, 6); 7972 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 7973 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 7974 return ERROR_CODE_SUCCESS; 7975 } 7976 7977 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 7978 btstack_linked_list_iterator_t it; 7979 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7980 while (btstack_linked_list_iterator_has_next(&it)){ 7981 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 7982 if (entry->address_type != address_type) { 7983 continue; 7984 } 7985 if (memcmp(entry->address, address, 6) != 0) { 7986 continue; 7987 } 7988 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 7989 // remove from controller if already present 7990 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 7991 } else { 7992 // directly remove entry from whitelist 7993 btstack_linked_list_iterator_remove(&it); 7994 btstack_memory_whitelist_entry_free(entry); 7995 } 7996 return ERROR_CODE_SUCCESS; 7997 } 7998 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7999 } 8000 8001 static void hci_whitelist_clear(void){ 8002 btstack_linked_list_iterator_t it; 8003 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8004 while (btstack_linked_list_iterator_has_next(&it)){ 8005 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8006 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8007 // remove from controller if already present 8008 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8009 continue; 8010 } 8011 // directly remove entry from whitelist 8012 btstack_linked_list_iterator_remove(&it); 8013 btstack_memory_whitelist_entry_free(entry); 8014 } 8015 } 8016 8017 // free all entries unconditionally 8018 static void hci_whitelist_free(void){ 8019 btstack_linked_list_iterator_t lit; 8020 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 8021 while (btstack_linked_list_iterator_has_next(&lit)){ 8022 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 8023 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 8024 btstack_memory_whitelist_entry_free(entry); 8025 } 8026 } 8027 8028 /** 8029 * @brief Clear Whitelist 8030 * @return 0 if ok 8031 */ 8032 uint8_t gap_whitelist_clear(void){ 8033 hci_whitelist_clear(); 8034 hci_run(); 8035 return ERROR_CODE_SUCCESS; 8036 } 8037 8038 /** 8039 * @brief Add Device to Whitelist 8040 * @param address_typ 8041 * @param address 8042 * @return 0 if ok 8043 */ 8044 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8045 uint8_t status = hci_whitelist_add(address_type, address); 8046 if (status){ 8047 return status; 8048 } 8049 hci_run(); 8050 return ERROR_CODE_SUCCESS; 8051 } 8052 8053 /** 8054 * @brief Remove Device from Whitelist 8055 * @param address_typ 8056 * @param address 8057 * @return 0 if ok 8058 */ 8059 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8060 uint8_t status = hci_whitelist_remove(address_type, address); 8061 if (status){ 8062 return status; 8063 } 8064 hci_run(); 8065 return ERROR_CODE_SUCCESS; 8066 } 8067 8068 #ifdef ENABLE_LE_CENTRAL 8069 /** 8070 * @brief Connect with Whitelist 8071 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8072 * @return - if ok 8073 */ 8074 uint8_t gap_connect_with_whitelist(void){ 8075 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8076 return ERROR_CODE_COMMAND_DISALLOWED; 8077 } 8078 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8079 hci_run(); 8080 return ERROR_CODE_SUCCESS; 8081 } 8082 8083 /** 8084 * @brief Auto Connection Establishment - Start Connecting to device 8085 * @param address_typ 8086 * @param address 8087 * @return 0 if ok 8088 */ 8089 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8090 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8091 return ERROR_CODE_COMMAND_DISALLOWED; 8092 } 8093 8094 uint8_t status = hci_whitelist_add(address_type, address); 8095 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8096 return status; 8097 } 8098 8099 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8100 8101 hci_run(); 8102 return ERROR_CODE_SUCCESS; 8103 } 8104 8105 /** 8106 * @brief Auto Connection Establishment - Stop Connecting to device 8107 * @param address_typ 8108 * @param address 8109 * @return 0 if ok 8110 */ 8111 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8112 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8113 return ERROR_CODE_COMMAND_DISALLOWED; 8114 } 8115 8116 hci_whitelist_remove(address_type, address); 8117 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8118 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8119 } 8120 hci_run(); 8121 return 0; 8122 } 8123 8124 /** 8125 * @brief Auto Connection Establishment - Stop everything 8126 * @note Convenience function to stop all active auto connection attempts 8127 */ 8128 uint8_t gap_auto_connection_stop_all(void){ 8129 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8130 return ERROR_CODE_COMMAND_DISALLOWED; 8131 } 8132 hci_whitelist_clear(); 8133 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8134 hci_run(); 8135 return ERROR_CODE_SUCCESS; 8136 } 8137 8138 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8139 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8140 if (!conn) return 0; 8141 return conn->le_connection_interval; 8142 } 8143 #endif 8144 #endif 8145 8146 #ifdef ENABLE_CLASSIC 8147 /** 8148 * @brief Set Extended Inquiry Response data 8149 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8150 * @note has to be done before stack starts up 8151 */ 8152 void gap_set_extended_inquiry_response(const uint8_t * data){ 8153 hci_stack->eir_data = data; 8154 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8155 hci_run(); 8156 } 8157 8158 /** 8159 * @brief Start GAP Classic Inquiry 8160 * @param duration in 1.28s units 8161 * @return 0 if ok 8162 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8163 */ 8164 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8165 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8166 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8167 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8168 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8169 } 8170 hci_stack->inquiry_state = duration_in_1280ms_units; 8171 hci_stack->inquiry_max_period_length = 0; 8172 hci_stack->inquiry_min_period_length = 0; 8173 hci_run(); 8174 return 0; 8175 } 8176 8177 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8178 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8179 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8180 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8181 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8182 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8183 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8184 8185 hci_stack->inquiry_state = duration; 8186 hci_stack->inquiry_max_period_length = max_period_length; 8187 hci_stack->inquiry_min_period_length = min_period_length; 8188 hci_run(); 8189 return 0; 8190 } 8191 8192 /** 8193 * @brief Stop GAP Classic Inquiry 8194 * @return 0 if ok 8195 */ 8196 int gap_inquiry_stop(void){ 8197 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8198 // emit inquiry complete event, before it even started 8199 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8200 hci_emit_event(event, sizeof(event), 1); 8201 return 0; 8202 } 8203 switch (hci_stack->inquiry_state){ 8204 case GAP_INQUIRY_STATE_ACTIVE: 8205 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8206 hci_run(); 8207 return ERROR_CODE_SUCCESS; 8208 case GAP_INQUIRY_STATE_PERIODIC: 8209 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8210 hci_run(); 8211 return ERROR_CODE_SUCCESS; 8212 default: 8213 return ERROR_CODE_COMMAND_DISALLOWED; 8214 } 8215 } 8216 8217 void gap_inquiry_set_lap(uint32_t lap){ 8218 hci_stack->inquiry_lap = lap; 8219 } 8220 8221 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8222 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8223 hci_stack->inquiry_scan_window = inquiry_scan_window; 8224 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8225 hci_run(); 8226 } 8227 8228 8229 /** 8230 * @brief Remote Name Request 8231 * @param addr 8232 * @param page_scan_repetition_mode 8233 * @param clock_offset only used when bit 15 is set 8234 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8235 */ 8236 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8237 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8238 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8239 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8240 hci_stack->remote_name_clock_offset = clock_offset; 8241 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8242 hci_run(); 8243 return 0; 8244 } 8245 8246 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8247 hci_stack->gap_pairing_state = state; 8248 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8249 hci_run(); 8250 return 0; 8251 } 8252 8253 /** 8254 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8255 * @param addr 8256 * @param pin_data 8257 * @param pin_len 8258 * @return 0 if ok 8259 */ 8260 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8261 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8262 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8263 hci_stack->gap_pairing_pin_len = pin_len; 8264 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8265 } 8266 8267 /** 8268 * @brief Legacy Pairing Pin Code Response 8269 * @param addr 8270 * @param pin 8271 * @return 0 if ok 8272 */ 8273 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8274 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8275 } 8276 8277 /** 8278 * @brief Abort Legacy Pairing 8279 * @param addr 8280 * @param pin 8281 * @return 0 if ok 8282 */ 8283 int gap_pin_code_negative(bd_addr_t addr){ 8284 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8285 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8286 } 8287 8288 /** 8289 * @brief SSP Passkey Response 8290 * @param addr 8291 * @param passkey 8292 * @return 0 if ok 8293 */ 8294 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8295 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8296 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8297 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8298 } 8299 8300 /** 8301 * @brief Abort SSP Passkey Entry/Pairing 8302 * @param addr 8303 * @param pin 8304 * @return 0 if ok 8305 */ 8306 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8307 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8308 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8309 } 8310 8311 /** 8312 * @brief Accept SSP Numeric Comparison 8313 * @param addr 8314 * @param passkey 8315 * @return 0 if ok 8316 */ 8317 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8318 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8319 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8320 } 8321 8322 /** 8323 * @brief Abort SSP Numeric Comparison/Pairing 8324 * @param addr 8325 * @param pin 8326 * @return 0 if ok 8327 */ 8328 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8329 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8330 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8331 } 8332 8333 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8334 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8335 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8336 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8337 connectionSetAuthenticationFlags(conn, flag); 8338 hci_run(); 8339 return ERROR_CODE_SUCCESS; 8340 } 8341 #endif 8342 8343 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8344 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8345 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8346 } 8347 8348 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8349 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8350 } 8351 #endif 8352 8353 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8354 /** 8355 * @brief Report Remote OOB Data 8356 * @param bd_addr 8357 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8358 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8359 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8360 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8361 */ 8362 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){ 8363 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8364 if (connection == NULL) { 8365 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8366 } 8367 connection->classic_oob_c_192 = c_192; 8368 connection->classic_oob_r_192 = r_192; 8369 8370 // ignore P-256 if not supported by us 8371 if (hci_stack->secure_connections_active){ 8372 connection->classic_oob_c_256 = c_256; 8373 connection->classic_oob_r_256 = r_256; 8374 } 8375 8376 return ERROR_CODE_SUCCESS; 8377 } 8378 /** 8379 * @brief Generate new OOB data 8380 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 8381 */ 8382 void gap_ssp_generate_oob_data(void){ 8383 hci_stack->classic_read_local_oob_data = true; 8384 hci_run(); 8385 } 8386 8387 #endif 8388 8389 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 8390 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 8391 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8392 if (connection == NULL) { 8393 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8394 } 8395 8396 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 8397 connection->link_key_type = type; 8398 8399 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 8400 } 8401 8402 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 8403 /** 8404 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 8405 * @param inquiry_mode see bluetooth_defines.h 8406 */ 8407 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 8408 hci_stack->inquiry_mode = inquiry_mode; 8409 } 8410 8411 /** 8412 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 8413 */ 8414 void hci_set_sco_voice_setting(uint16_t voice_setting){ 8415 hci_stack->sco_voice_setting = voice_setting; 8416 } 8417 8418 /** 8419 * @brief Get SCO Voice Setting 8420 * @return current voice setting 8421 */ 8422 uint16_t hci_get_sco_voice_setting(void){ 8423 return hci_stack->sco_voice_setting; 8424 } 8425 8426 static int hci_have_usb_transport(void){ 8427 if (!hci_stack->hci_transport) return 0; 8428 const char * transport_name = hci_stack->hci_transport->name; 8429 if (!transport_name) return 0; 8430 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 8431 } 8432 8433 /** @brief Get SCO packet length for current SCO Voice setting 8434 * @note Using SCO packets of the exact length is required for USB transfer 8435 * @return Length of SCO packets in bytes (not audio frames) 8436 */ 8437 uint16_t hci_get_sco_packet_length(void){ 8438 uint16_t sco_packet_length = 0; 8439 8440 #ifdef ENABLE_SCO_OVER_HCI 8441 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8442 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8443 8444 if (hci_have_usb_transport()){ 8445 // see Core Spec for H2 USB Transfer. 8446 // 3 byte SCO header + 24 bytes per connection 8447 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 8448 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 8449 } else { 8450 // 3 byte SCO header + SCO packet size over the air (60 bytes) 8451 sco_packet_length = 3 + 60 * multiplier; 8452 // assert that it still fits inside an SCO buffer 8453 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 8454 sco_packet_length = 3 + 60; 8455 } 8456 } 8457 #endif 8458 8459 #ifdef HAVE_SCO_TRANSPORT 8460 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8461 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8462 sco_packet_length = 3 + 60 * multiplier; 8463 #endif 8464 return sco_packet_length; 8465 } 8466 8467 /** 8468 * @brief Sets the master/slave policy 8469 * @param policy (0: attempt to become master, 1: let connecting device decide) 8470 */ 8471 void hci_set_master_slave_policy(uint8_t policy){ 8472 hci_stack->master_slave_policy = policy; 8473 } 8474 8475 #endif 8476 8477 HCI_STATE hci_get_state(void){ 8478 return hci_stack->state; 8479 } 8480 8481 #ifdef ENABLE_CLASSIC 8482 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 8483 hci_stack->gap_classic_accept_callback = accept_callback; 8484 } 8485 #endif 8486 8487 /** 8488 * @brief Set callback for Bluetooth Hardware Error 8489 */ 8490 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 8491 hci_stack->hardware_error_callback = fn; 8492 } 8493 8494 void hci_disconnect_all(void){ 8495 btstack_linked_list_iterator_t it; 8496 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8497 while (btstack_linked_list_iterator_has_next(&it)){ 8498 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8499 if (con->state == SENT_DISCONNECT) continue; 8500 con->state = SEND_DISCONNECT; 8501 } 8502 hci_run(); 8503 } 8504 8505 uint16_t hci_get_manufacturer(void){ 8506 return hci_stack->manufacturer; 8507 } 8508 8509 #ifdef ENABLE_BLE 8510 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 8511 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 8512 if (!hci_con) return NULL; 8513 return &hci_con->sm_connection; 8514 } 8515 8516 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 8517 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 8518 #endif 8519 8520 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 8521 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8522 if (hci_connection == NULL) return 0; 8523 if (hci_is_le_connection(hci_connection)){ 8524 #ifdef ENABLE_BLE 8525 sm_connection_t * sm_conn = &hci_connection->sm_connection; 8526 if (sm_conn->sm_connection_encrypted) { 8527 return sm_conn->sm_actual_encryption_key_size; 8528 } 8529 #endif 8530 } else { 8531 #ifdef ENABLE_CLASSIC 8532 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 8533 return hci_connection->encryption_key_size; 8534 } 8535 #endif 8536 } 8537 return 0; 8538 } 8539 8540 bool gap_authenticated(hci_con_handle_t con_handle){ 8541 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8542 if (hci_connection == NULL) return false; 8543 8544 switch (hci_connection->address_type){ 8545 #ifdef ENABLE_BLE 8546 case BD_ADDR_TYPE_LE_PUBLIC: 8547 case BD_ADDR_TYPE_LE_RANDOM: 8548 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 8549 return hci_connection->sm_connection.sm_connection_authenticated != 0; 8550 #endif 8551 #ifdef ENABLE_CLASSIC 8552 case BD_ADDR_TYPE_SCO: 8553 case BD_ADDR_TYPE_ACL: 8554 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 8555 #endif 8556 default: 8557 return false; 8558 } 8559 } 8560 8561 bool gap_secure_connection(hci_con_handle_t con_handle){ 8562 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8563 if (hci_connection == NULL) return 0; 8564 8565 switch (hci_connection->address_type){ 8566 #ifdef ENABLE_BLE 8567 case BD_ADDR_TYPE_LE_PUBLIC: 8568 case BD_ADDR_TYPE_LE_RANDOM: 8569 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 8570 return hci_connection->sm_connection.sm_connection_sc != 0; 8571 #endif 8572 #ifdef ENABLE_CLASSIC 8573 case BD_ADDR_TYPE_SCO: 8574 case BD_ADDR_TYPE_ACL: 8575 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 8576 #endif 8577 default: 8578 return false; 8579 } 8580 } 8581 8582 bool gap_bonded(hci_con_handle_t con_handle){ 8583 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8584 if (hci_connection == NULL) return 0; 8585 8586 #ifdef ENABLE_CLASSIC 8587 link_key_t link_key; 8588 link_key_type_t link_key_type; 8589 #endif 8590 switch (hci_connection->address_type){ 8591 #ifdef ENABLE_BLE 8592 case BD_ADDR_TYPE_LE_PUBLIC: 8593 case BD_ADDR_TYPE_LE_RANDOM: 8594 return hci_connection->sm_connection.sm_le_db_index >= 0; 8595 #endif 8596 #ifdef ENABLE_CLASSIC 8597 case BD_ADDR_TYPE_SCO: 8598 case BD_ADDR_TYPE_ACL: 8599 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 8600 #endif 8601 default: 8602 return false; 8603 } 8604 } 8605 8606 #ifdef ENABLE_BLE 8607 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 8608 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 8609 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 8610 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 8611 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 8612 return sm_conn->sm_connection_authorization_state; 8613 } 8614 #endif 8615 8616 #ifdef ENABLE_CLASSIC 8617 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){ 8618 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8619 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8620 conn->sniff_min_interval = sniff_min_interval; 8621 conn->sniff_max_interval = sniff_max_interval; 8622 conn->sniff_attempt = sniff_attempt; 8623 conn->sniff_timeout = sniff_timeout; 8624 hci_run(); 8625 return 0; 8626 } 8627 8628 /** 8629 * @brief Exit Sniff mode 8630 * @param con_handle 8631 @ @return 0 if ok 8632 */ 8633 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 8634 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8635 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8636 conn->sniff_min_interval = 0xffff; 8637 hci_run(); 8638 return 0; 8639 } 8640 8641 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){ 8642 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8643 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8644 conn->sniff_subrating_max_latency = max_latency; 8645 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 8646 conn->sniff_subrating_min_local_timeout = min_local_timeout; 8647 hci_run(); 8648 return ERROR_CODE_SUCCESS; 8649 } 8650 8651 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){ 8652 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8653 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8654 conn->qos_service_type = service_type; 8655 conn->qos_token_rate = token_rate; 8656 conn->qos_peak_bandwidth = peak_bandwidth; 8657 conn->qos_latency = latency; 8658 conn->qos_delay_variation = delay_variation; 8659 hci_run(); 8660 return ERROR_CODE_SUCCESS; 8661 } 8662 8663 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 8664 hci_stack->new_page_scan_interval = page_scan_interval; 8665 hci_stack->new_page_scan_window = page_scan_window; 8666 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 8667 hci_run(); 8668 } 8669 8670 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 8671 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 8672 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 8673 hci_run(); 8674 } 8675 8676 void gap_set_page_timeout(uint16_t page_timeout){ 8677 hci_stack->page_timeout = page_timeout; 8678 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 8679 hci_run(); 8680 } 8681 8682 #endif 8683 8684 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 8685 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 8686 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8687 if (le_device_db_index >= le_device_db_max_count()) return; 8688 uint8_t offset = le_device_db_index >> 3; 8689 uint8_t mask = 1 << (le_device_db_index & 7); 8690 hci_stack->le_resolving_list_add_entries[offset] |= mask; 8691 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8692 // note: go back to remove entries, otherwise, a remove + add will skip the add 8693 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8694 } 8695 } 8696 8697 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 8698 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8699 if (le_device_db_index >= le_device_db_max_count()) return; 8700 uint8_t offset = le_device_db_index >> 3; 8701 uint8_t mask = 1 << (le_device_db_index & 7); 8702 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 8703 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8704 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8705 } 8706 } 8707 8708 uint8_t gap_load_resolving_list_from_le_device_db(void){ 8709 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 8710 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 8711 } 8712 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 8713 // restart le resolving list update 8714 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 8715 } 8716 return ERROR_CODE_SUCCESS; 8717 } 8718 #endif 8719 8720 #ifdef ENABLE_BLE 8721 #ifdef ENABLE_LE_CENTRAL 8722 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8723 8724 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8725 // check if already in list 8726 btstack_linked_list_iterator_t it; 8727 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8728 while (btstack_linked_list_iterator_has_next(&it)) { 8729 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 8730 if (entry->sid != advertising_sid) { 8731 continue; 8732 } 8733 if (entry->address_type != address_type) { 8734 continue; 8735 } 8736 if (memcmp(entry->address, address, 6) != 0) { 8737 continue; 8738 } 8739 // disallow if already scheduled to add 8740 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 8741 return ERROR_CODE_COMMAND_DISALLOWED; 8742 } 8743 // still on controller, but scheduled to remove -> re-add 8744 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8745 return ERROR_CODE_SUCCESS; 8746 } 8747 // alloc and add to list 8748 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 8749 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8750 entry->sid = advertising_sid; 8751 entry->address_type = address_type; 8752 (void)memcpy(entry->address, address, 6); 8753 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8754 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 8755 return ERROR_CODE_SUCCESS; 8756 } 8757 8758 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8759 btstack_linked_list_iterator_t it; 8760 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8761 while (btstack_linked_list_iterator_has_next(&it)){ 8762 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8763 if (entry->sid != advertising_sid) { 8764 continue; 8765 } 8766 if (entry->address_type != address_type) { 8767 continue; 8768 } 8769 if (memcmp(entry->address, address, 6) != 0) { 8770 continue; 8771 } 8772 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8773 // remove from controller if already present 8774 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8775 } else { 8776 // directly remove entry from whitelist 8777 btstack_linked_list_iterator_remove(&it); 8778 btstack_memory_periodic_advertiser_list_entry_free(entry); 8779 } 8780 return ERROR_CODE_SUCCESS; 8781 } 8782 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8783 } 8784 8785 static void hci_periodic_advertiser_list_clear(void){ 8786 btstack_linked_list_iterator_t it; 8787 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8788 while (btstack_linked_list_iterator_has_next(&it)){ 8789 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8790 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8791 // remove from controller if already present 8792 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8793 continue; 8794 } 8795 // directly remove entry from whitelist 8796 btstack_linked_list_iterator_remove(&it); 8797 btstack_memory_periodic_advertiser_list_entry_free(entry); 8798 } 8799 } 8800 8801 // free all entries unconditionally 8802 static void hci_periodic_advertiser_list_free(void){ 8803 btstack_linked_list_iterator_t lit; 8804 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 8805 while (btstack_linked_list_iterator_has_next(&lit)){ 8806 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 8807 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 8808 btstack_memory_periodic_advertiser_list_entry_free(entry); 8809 } 8810 } 8811 8812 uint8_t gap_periodic_advertiser_list_clear(void){ 8813 hci_periodic_advertiser_list_clear(); 8814 hci_run(); 8815 return ERROR_CODE_SUCCESS; 8816 } 8817 8818 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8819 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 8820 if (status){ 8821 return status; 8822 } 8823 hci_run(); 8824 return ERROR_CODE_SUCCESS; 8825 } 8826 8827 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8828 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 8829 if (status){ 8830 return status; 8831 } 8832 hci_run(); 8833 return ERROR_CODE_SUCCESS; 8834 } 8835 8836 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 8837 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 8838 // abort if already active 8839 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 8840 return ERROR_CODE_COMMAND_DISALLOWED; 8841 } 8842 // store request 8843 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 8844 hci_stack->le_periodic_sync_options = options; 8845 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 8846 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 8847 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 8848 hci_stack->le_periodic_sync_skip = skip; 8849 hci_stack->le_periodic_sync_timeout = sync_timeout; 8850 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 8851 8852 hci_run(); 8853 return ERROR_CODE_SUCCESS; 8854 } 8855 8856 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 8857 // abort if not requested 8858 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 8859 return ERROR_CODE_COMMAND_DISALLOWED; 8860 } 8861 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 8862 hci_run(); 8863 return ERROR_CODE_SUCCESS; 8864 } 8865 8866 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 8867 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 8868 return ERROR_CODE_COMMAND_DISALLOWED; 8869 } 8870 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 8871 hci_run(); 8872 return ERROR_CODE_SUCCESS; 8873 } 8874 8875 #endif 8876 #endif 8877 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 8878 static uint8_t hci_iso_stream_create(hci_con_handle_t con_handle, uint8_t big_handle) { 8879 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 8880 if (iso_stream == NULL){ 8881 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8882 } else { 8883 iso_stream->state = HCI_ISO_STREAM_STATE_REQUESTED; 8884 iso_stream->con_handle = con_handle; 8885 iso_stream->big_handle = big_handle; 8886 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 8887 return ERROR_CODE_SUCCESS; 8888 } 8889 } 8890 8891 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 8892 btstack_linked_list_iterator_t it; 8893 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8894 while (btstack_linked_list_iterator_has_next(&it)){ 8895 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8896 if (iso_stream->con_handle == con_handle ) { 8897 return iso_stream; 8898 } 8899 } 8900 return NULL; 8901 } 8902 8903 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 8904 log_info("hci_iso_stream_finalize con_handle 0x%04x, big_handle 0x%02x", iso_stream->con_handle, iso_stream->big_handle); 8905 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 8906 btstack_memory_hci_iso_stream_free(iso_stream); 8907 } 8908 8909 static void hci_iso_stream_requested_finalize(uint8_t big_handle) { 8910 btstack_linked_list_iterator_t it; 8911 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8912 while (btstack_linked_list_iterator_has_next(&it)){ 8913 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8914 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 8915 (iso_stream->big_handle == big_handle)){ 8916 btstack_linked_list_iterator_remove(&it); 8917 btstack_memory_hci_iso_stream_free(iso_stream); 8918 } 8919 } 8920 } 8921 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 8922 btstack_linked_list_iterator_t it; 8923 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8924 while (btstack_linked_list_iterator_has_next(&it)){ 8925 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8926 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 8927 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 8928 } 8929 } 8930 } 8931 8932 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 8933 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 8934 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 8935 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 8936 return (sdu_len_offset + 2 + sdu_len) == size; 8937 } 8938 8939 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 8940 if (hci_stack->iso_packet_handler == NULL) { 8941 return; 8942 } 8943 if (size < 4) { 8944 return; 8945 } 8946 8947 // parse header 8948 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 8949 uint16_t iso_data_len = little_endian_read_16(packet, 2); 8950 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 8951 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 8952 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 8953 8954 // assert packet is complete 8955 if ((iso_data_len + 4u) != size){ 8956 return; 8957 } 8958 8959 if ((pb_flag & 0x01) == 0){ 8960 if (pb_flag == 0x02){ 8961 // The ISO_Data_Load field contains a header and a complete SDU. 8962 if (hci_iso_sdu_complete(packet, size)) { 8963 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 8964 } 8965 } else { 8966 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 8967 if (iso_stream == NULL){ 8968 return; 8969 } 8970 if (size > HCI_ISO_PAYLOAD_SIZE){ 8971 return; 8972 } 8973 memcpy(iso_stream->reassembly_buffer, packet, size); 8974 // fix pb_flag 8975 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 8976 iso_stream->reassembly_pos = size; 8977 } 8978 } else { 8979 // iso_data_load contains continuation or last fragment of an SDU 8980 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 8981 if (ts_flag != 0){ 8982 return; 8983 } 8984 // append fragment 8985 if (iso_stream == NULL){ 8986 return; 8987 } 8988 if (iso_stream->reassembly_pos == 0){ 8989 return; 8990 } 8991 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 8992 // reset reassembly buffer 8993 iso_stream->reassembly_pos = 0; 8994 return; 8995 } 8996 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 8997 iso_stream->reassembly_pos += iso_data_len; 8998 8999 // deliver if last fragment and SDU complete 9000 if (pb_flag == 0x03){ 9001 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9002 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9003 } 9004 iso_stream->reassembly_pos = 0; 9005 } 9006 } 9007 } 9008 9009 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9010 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9011 uint16_t pos = 0; 9012 event[pos++] = HCI_EVENT_META_GAP; 9013 event[pos++] = 4 + (2 * big->num_bis); 9014 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9015 event[pos++] = status; 9016 event[pos++] = big->big_handle; 9017 event[pos++] = big->num_bis; 9018 uint8_t i; 9019 for (i=0;i<big->num_bis;i++){ 9020 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9021 pos += 2; 9022 } 9023 hci_emit_event(event, pos, 0); 9024 } 9025 9026 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9027 uint8_t event [4]; 9028 uint16_t pos = 0; 9029 event[pos++] = HCI_EVENT_META_GAP; 9030 event[pos++] = 2; 9031 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9032 event[pos++] = big->big_handle; 9033 hci_emit_event(event, pos, 0); 9034 } 9035 9036 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9037 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9038 uint16_t pos = 0; 9039 event[pos++] = HCI_EVENT_META_GAP; 9040 event[pos++] = 4; 9041 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9042 event[pos++] = status; 9043 event[pos++] = big_sync->big_handle; 9044 event[pos++] = big_sync->num_bis; 9045 uint8_t i; 9046 for (i=0;i<big_sync->num_bis;i++){ 9047 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9048 pos += 2; 9049 } 9050 hci_emit_event(event, pos, 0); 9051 } 9052 9053 static void hci_emit_big_sync_stopped(const le_audio_big_sync_t * big_sync){ 9054 uint8_t event [4]; 9055 uint16_t pos = 0; 9056 event[pos++] = HCI_EVENT_META_GAP; 9057 event[pos++] = 2; 9058 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9059 event[pos++] = big_sync->big_handle; 9060 hci_emit_event(event, pos, 0); 9061 } 9062 9063 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9064 uint8_t event[6]; 9065 uint16_t pos = 0; 9066 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9067 event[pos++] = sizeof(event) - 2; 9068 event[pos++] = big->big_handle; 9069 event[pos++] = bis_index; 9070 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9071 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9072 } 9073 9074 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9075 btstack_linked_list_iterator_t it; 9076 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9077 while (btstack_linked_list_iterator_has_next(&it)){ 9078 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9079 if ( big->big_handle == big_handle ) { 9080 return big; 9081 } 9082 } 9083 return NULL; 9084 } 9085 9086 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9087 btstack_linked_list_iterator_t it; 9088 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9089 while (btstack_linked_list_iterator_has_next(&it)){ 9090 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9091 if ( big_sync->big_handle == big_handle ) { 9092 return big_sync; 9093 } 9094 } 9095 return NULL; 9096 } 9097 9098 static void hci_iso_notify_can_send_now(void){ 9099 btstack_linked_list_iterator_t it; 9100 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9101 while (btstack_linked_list_iterator_has_next(&it)){ 9102 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9103 if (big->can_send_now_requested){ 9104 // check if no outgoing iso packets pending 9105 uint8_t i; 9106 bool can_send = true; 9107 for (i=0;i<big->num_bis;i++){ 9108 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9109 if ((iso_stream == NULL) || (iso_stream->num_packets_sent > 0)){ 9110 can_send = false; 9111 break; 9112 } 9113 } 9114 if (can_send){ 9115 // propagate can send now to individual streams 9116 big->can_send_now_requested = false; 9117 for (i=0;i<big->num_bis;i++){ 9118 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9119 iso_stream->emit_ready_to_send = true; 9120 } 9121 } 9122 } 9123 } 9124 9125 if (hci_stack->hci_packet_buffer_reserved) return; 9126 9127 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9128 while (btstack_linked_list_iterator_has_next(&it)){ 9129 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9130 // report bis ready 9131 uint8_t i; 9132 for (i=0;i<big->num_bis;i++){ 9133 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9134 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9135 iso_stream->emit_ready_to_send = false; 9136 hci_emit_bis_can_send_now(big, i); 9137 break; 9138 } 9139 } 9140 } 9141 } 9142 9143 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9144 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9145 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9146 } 9147 if (big_params->num_bis == 0){ 9148 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9149 } 9150 if (big_params->num_bis > MAX_NR_BIS){ 9151 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9152 } 9153 9154 // reserve ISO Streams 9155 uint8_t i; 9156 uint8_t status = ERROR_CODE_SUCCESS; 9157 for (i=0;i<big_params->num_bis;i++){ 9158 status = hci_iso_stream_create(HCI_CON_HANDLE_INVALID, big_params->big_handle); 9159 if (status != ERROR_CODE_SUCCESS) { 9160 break; 9161 } 9162 } 9163 9164 // free structs on error 9165 if (status != ERROR_CODE_SUCCESS){ 9166 hci_iso_stream_requested_finalize(big_params->big_handle); 9167 return status; 9168 } 9169 9170 le_audio_big_t * big = storage; 9171 big->big_handle = big_params->big_handle; 9172 big->params = big_params; 9173 big->state = LE_AUDIO_BIG_STATE_CREATE; 9174 big->num_bis = big_params->num_bis; 9175 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9176 9177 hci_run(); 9178 9179 return ERROR_CODE_SUCCESS; 9180 } 9181 9182 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9183 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9184 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9185 } 9186 if (big_sync_params->num_bis == 0){ 9187 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9188 } 9189 if (big_sync_params->num_bis > MAX_NR_BIS){ 9190 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9191 } 9192 9193 le_audio_big_sync_t * big_sync = storage; 9194 big_sync->big_handle = big_sync_params->big_handle; 9195 big_sync->params = big_sync_params; 9196 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9197 big_sync->num_bis = big_sync_params->num_bis; 9198 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9199 9200 hci_run(); 9201 9202 return ERROR_CODE_SUCCESS; 9203 } 9204 9205 uint8_t gap_big_terminate(uint8_t big_handle){ 9206 le_audio_big_t * big = hci_big_for_handle(big_handle); 9207 if (big == NULL){ 9208 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9209 } 9210 switch (big->state){ 9211 case LE_AUDIO_BIG_STATE_CREATE: 9212 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9213 hci_emit_big_terminated(big); 9214 break; 9215 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9216 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9217 break; 9218 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9219 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9220 case LE_AUDIO_BIG_STATE_ACTIVE: 9221 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9222 hci_run(); 9223 break; 9224 default: 9225 return ERROR_CODE_COMMAND_DISALLOWED; 9226 } 9227 return ERROR_CODE_SUCCESS; 9228 } 9229 9230 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9231 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9232 if (big_sync == NULL){ 9233 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9234 } 9235 switch (big_sync->state){ 9236 case LE_AUDIO_BIG_STATE_CREATE: 9237 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9238 hci_emit_big_sync_stopped(big_sync); 9239 break; 9240 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9241 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9242 break; 9243 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9244 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9245 case LE_AUDIO_BIG_STATE_ACTIVE: 9246 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 9247 hci_run(); 9248 break; 9249 default: 9250 return ERROR_CODE_COMMAND_DISALLOWED; 9251 } 9252 return ERROR_CODE_SUCCESS; 9253 } 9254 9255 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 9256 le_audio_big_t * big = hci_big_for_handle(big_handle); 9257 if (big == NULL){ 9258 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9259 } 9260 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 9261 return ERROR_CODE_COMMAND_DISALLOWED; 9262 } 9263 big->can_send_now_requested = true; 9264 hci_iso_notify_can_send_now(); 9265 return ERROR_CODE_SUCCESS; 9266 } 9267 #endif 9268 #endif /* ENABLE_BLE */ 9269 9270 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 9271 void hci_setup_test_connections_fuzz(void){ 9272 hci_connection_t * conn; 9273 9274 // default address: 66:55:44:33:00:01 9275 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 9276 9277 // setup Controller info 9278 hci_stack->num_cmd_packets = 255; 9279 hci_stack->acl_packets_total_num = 255; 9280 9281 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 9282 addr[5] = 0x01; 9283 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9284 conn->con_handle = addr[5]; 9285 conn->role = HCI_ROLE_SLAVE; 9286 conn->state = RECEIVED_CONNECTION_REQUEST; 9287 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9288 9289 // setup incoming Classic SCO connection with con handle 0x0002 9290 addr[5] = 0x02; 9291 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9292 conn->con_handle = addr[5]; 9293 conn->role = HCI_ROLE_SLAVE; 9294 conn->state = RECEIVED_CONNECTION_REQUEST; 9295 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9296 9297 // setup ready Classic ACL connection with con handle 0x0003 9298 addr[5] = 0x03; 9299 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9300 conn->con_handle = addr[5]; 9301 conn->role = HCI_ROLE_SLAVE; 9302 conn->state = OPEN; 9303 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9304 9305 // setup ready Classic SCO connection with con handle 0x0004 9306 addr[5] = 0x04; 9307 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9308 conn->con_handle = addr[5]; 9309 conn->role = HCI_ROLE_SLAVE; 9310 conn->state = OPEN; 9311 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9312 9313 // setup ready LE ACL connection with con handle 0x005 and public address 9314 addr[5] = 0x05; 9315 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 9316 conn->con_handle = addr[5]; 9317 conn->role = HCI_ROLE_SLAVE; 9318 conn->state = OPEN; 9319 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9320 conn->sm_connection.sm_connection_encrypted = 1; 9321 } 9322 9323 void hci_free_connections_fuzz(void){ 9324 btstack_linked_list_iterator_t it; 9325 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9326 while (btstack_linked_list_iterator_has_next(&it)){ 9327 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9328 btstack_linked_list_iterator_remove(&it); 9329 btstack_memory_hci_connection_free(con); 9330 } 9331 } 9332 void hci_simulate_working_fuzz(void){ 9333 hci_stack->le_scanning_param_update = false; 9334 hci_init_done(); 9335 hci_stack->num_cmd_packets = 255; 9336 } 9337 #endif 9338