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_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 78 #ifndef HCI_HOST_ACL_PACKET_NUM 79 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 80 #endif 81 #ifndef HCI_HOST_ACL_PACKET_LEN 82 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 83 #endif 84 #ifndef HCI_HOST_SCO_PACKET_NUM 85 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 86 #endif 87 #ifndef HCI_HOST_SCO_PACKET_LEN 88 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 89 #endif 90 #endif 91 92 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 93 #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." 94 #endif 95 96 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 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 HAVE_SCO_TRANSPORT." 98 #endif 99 100 #define HCI_CONNECTION_TIMEOUT_MS 10000 101 102 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 103 #define HCI_RESET_RESEND_TIMEOUT_MS 200 104 #endif 105 106 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 107 #ifndef GAP_INQUIRY_MAX_NAME_LEN 108 #define GAP_INQUIRY_MAX_NAME_LEN 32 109 #endif 110 111 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 112 #define GAP_INQUIRY_DURATION_MIN 0x01 113 #define GAP_INQUIRY_DURATION_MAX 0x30 114 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 115 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 116 #define GAP_INQUIRY_STATE_IDLE 0x00 117 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 118 #define GAP_INQUIRY_STATE_ACTIVE 0x81 119 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 120 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 121 #define GAP_INQUIRY_STATE_PERIODIC 0x84 122 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 123 124 // GAP Remote Name Request 125 #define GAP_REMOTE_NAME_STATE_IDLE 0 126 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 127 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 128 129 // GAP Pairing 130 #define GAP_PAIRING_STATE_IDLE 0 131 #define GAP_PAIRING_STATE_SEND_PIN 1 132 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 133 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 134 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 135 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 136 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 137 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 138 139 // 140 // compact storage of relevant supported HCI Commands. 141 // X-Macro below provides enumeration and mapping table into the supported 142 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 143 // 144 145 // format: command name, byte offset, bit nr in 64-byte supported commands 146 // currently stored in 32-bit variable 147 #define SUPPORTED_HCI_COMMANDS \ 148 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 149 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 150 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 151 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 152 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 153 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 154 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 155 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 156 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 157 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 158 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 159 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 160 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 161 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 162 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 163 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 164 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 165 166 // enumerate supported commands 167 #define X(name, offset, bit) name, 168 enum { 169 SUPPORTED_HCI_COMMANDS 170 SUPPORTED_HCI_COMMANDS_COUNT 171 }; 172 #undef X 173 174 // prototypes 175 #ifdef ENABLE_CLASSIC 176 static void hci_update_scan_enable(void); 177 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 178 static int hci_local_ssp_activated(void); 179 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 180 static bool hci_ssp_supported(hci_connection_t * connection); 181 static void hci_notify_if_sco_can_send_now(void); 182 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 183 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 184 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 185 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 186 static void hci_connection_timestamp(hci_connection_t *connection); 187 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 188 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 189 #endif 190 191 static int hci_power_control_on(void); 192 static void hci_power_control_off(void); 193 static void hci_state_reset(void); 194 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 195 static void hci_emit_transport_packet_sent(void); 196 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 197 static void hci_emit_nr_connections_changed(void); 198 static void hci_emit_hci_open_failed(void); 199 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 200 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 201 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 202 static void hci_run(void); 203 static int hci_is_le_connection(hci_connection_t * connection); 204 205 #ifdef ENABLE_CLASSIC 206 static int hci_have_usb_transport(void); 207 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 208 #endif 209 210 #ifdef ENABLE_BLE 211 static void hci_whitelist_free(void); 212 #ifdef ENABLE_LE_CENTRAL 213 // called from test/ble_client/advertising_data_parser.c 214 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 215 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 216 static hci_connection_t * gap_get_outgoing_connection(void); 217 static void hci_le_scan_stop(void); 218 static bool hci_run_general_gap_le(void); 219 #endif 220 #ifdef ENABLE_LE_PERIPHERAL 221 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 222 static void hci_periodic_advertiser_list_free(void); 223 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 224 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 225 #endif /* ENABLE_LE_PERIPHERAL */ 226 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 227 static uint8_t hci_iso_stream_create(hci_con_handle_t con_handle, uint8_t big_handle); 228 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 229 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 230 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 231 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 232 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size); 233 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 234 static void hci_iso_notify_can_send_now(void); 235 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 236 static void hci_emit_big_terminated(const le_audio_big_t * big); 237 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 238 static void hci_emit_big_sync_stopped(const le_audio_big_sync_t * big_sync); 239 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 240 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 241 #endif /* ENABLE_BLE */ 242 243 // the STACK is here 244 #ifndef HAVE_MALLOC 245 static hci_stack_t hci_stack_static; 246 #endif 247 static hci_stack_t * hci_stack = NULL; 248 249 #ifdef ENABLE_CLASSIC 250 // default name 251 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 252 253 // test helper 254 static uint8_t disable_l2cap_timeouts = 0; 255 #endif 256 257 // reset connection state on create and on reconnect 258 // don't overwrite addr, con handle, role 259 static void hci_connection_init(hci_connection_t * conn){ 260 conn->authentication_flags = AUTH_FLAG_NONE; 261 conn->bonding_flags = 0; 262 conn->requested_security_level = LEVEL_0; 263 #ifdef ENABLE_CLASSIC 264 conn->request_role = HCI_ROLE_INVALID; 265 conn->sniff_subrating_max_latency = 0xffff; 266 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 267 conn->link_key_type = INVALID_LINK_KEY; 268 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 269 btstack_run_loop_set_timer_context(&conn->timeout, conn); 270 hci_connection_timestamp(conn); 271 #endif 272 conn->acl_recombination_length = 0; 273 conn->acl_recombination_pos = 0; 274 conn->num_packets_sent = 0; 275 276 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 277 #ifdef ENABLE_BLE 278 conn->le_phy_update_all_phys = 0xff; 279 #endif 280 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 281 conn->le_max_tx_octets = 27; 282 #endif 283 #ifdef ENABLE_CLASSIC_PAIRING_OOB 284 conn->classic_oob_c_192 = NULL; 285 conn->classic_oob_r_192 = NULL; 286 conn->classic_oob_c_256 = NULL; 287 conn->classic_oob_r_256 = NULL; 288 #endif 289 } 290 291 /** 292 * create connection for given address 293 * 294 * @return connection OR NULL, if no memory left 295 */ 296 static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 297 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 298 299 hci_connection_t * conn = btstack_memory_hci_connection_get(); 300 if (!conn) return NULL; 301 hci_connection_init(conn); 302 303 bd_addr_copy(conn->address, addr); 304 conn->address_type = addr_type; 305 conn->con_handle = HCI_CON_HANDLE_INVALID; 306 conn->role = HCI_ROLE_INVALID; 307 308 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 309 310 return conn; 311 } 312 313 314 /** 315 * get le connection parameter range 316 * 317 * @return le connection parameter range struct 318 */ 319 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 320 *range = hci_stack->le_connection_parameter_range; 321 } 322 323 /** 324 * set le connection parameter range 325 * 326 */ 327 328 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 329 hci_stack->le_connection_parameter_range = *range; 330 } 331 332 /** 333 * @brief Test if connection parameters are inside in existing rage 334 * @param conn_interval_min (unit: 1.25ms) 335 * @param conn_interval_max (unit: 1.25ms) 336 * @param conn_latency 337 * @param supervision_timeout (unit: 10ms) 338 * @return 1 if included 339 */ 340 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){ 341 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 342 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 343 344 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 345 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 346 347 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 348 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 349 350 return 1; 351 } 352 353 /** 354 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 355 * @note: default: 1 356 * @param max_peripheral_connections 357 */ 358 #ifdef ENABLE_LE_PERIPHERAL 359 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 360 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 361 } 362 #endif 363 364 /** 365 * get hci connections iterator 366 * 367 * @return hci connections iterator 368 */ 369 370 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 371 btstack_linked_list_iterator_init(it, &hci_stack->connections); 372 } 373 374 /** 375 * get connection for a given handle 376 * 377 * @return connection OR NULL, if not found 378 */ 379 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 380 btstack_linked_list_iterator_t it; 381 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 382 while (btstack_linked_list_iterator_has_next(&it)){ 383 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 384 if ( item->con_handle == con_handle ) { 385 return item; 386 } 387 } 388 return NULL; 389 } 390 391 /** 392 * get connection for given address 393 * 394 * @return connection OR NULL, if not found 395 */ 396 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 397 btstack_linked_list_iterator_t it; 398 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 399 while (btstack_linked_list_iterator_has_next(&it)){ 400 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 401 if (connection->address_type != addr_type) continue; 402 if (memcmp(addr, connection->address, 6) != 0) continue; 403 return connection; 404 } 405 return NULL; 406 } 407 408 #ifdef ENABLE_CLASSIC 409 410 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 411 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 412 } 413 414 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 415 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 416 } 417 418 #ifdef ENABLE_SCO_OVER_HCI 419 static int hci_number_sco_connections(void){ 420 int connections = 0; 421 btstack_linked_list_iterator_t it; 422 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 423 while (btstack_linked_list_iterator_has_next(&it)){ 424 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 425 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 426 connections++; 427 } 428 return connections; 429 } 430 #endif 431 432 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 433 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 434 #ifdef HAVE_EMBEDDED_TICK 435 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 436 // connections might be timed out 437 hci_emit_l2cap_check_timeout(connection); 438 } 439 #else 440 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 441 // connections might be timed out 442 hci_emit_l2cap_check_timeout(connection); 443 } 444 #endif 445 } 446 447 static void hci_connection_timestamp(hci_connection_t *connection){ 448 #ifdef HAVE_EMBEDDED_TICK 449 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 450 #else 451 connection->timestamp = btstack_run_loop_get_time_ms(); 452 #endif 453 } 454 455 /** 456 * add authentication flags and reset timer 457 * @note: assumes classic connection 458 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 459 */ 460 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 461 bd_addr_t addr; 462 reverse_bd_addr(bd_addr, addr); 463 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 464 if (conn) { 465 connectionSetAuthenticationFlags(conn, flags); 466 hci_connection_timestamp(conn); 467 } 468 } 469 470 static bool hci_pairing_active(hci_connection_t * hci_connection){ 471 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 472 } 473 474 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 475 if (hci_pairing_active(hci_connection)) return; 476 if (ssp){ 477 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 478 } else { 479 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 480 } 481 // if we are initiator, we have sent an HCI Authenticate Request 482 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 483 484 // if we are responder, use minimal service security level as required level 485 if (!initiator){ 486 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); 487 } 488 489 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 490 491 uint8_t event[12]; 492 event[0] = GAP_EVENT_PAIRING_STARTED; 493 event[1] = 10; 494 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 495 reverse_bd_addr(hci_connection->address, &event[4]); 496 event[10] = (uint8_t) ssp; 497 event[11] = (uint8_t) initiator; 498 hci_emit_event(event, sizeof(event), 1); 499 } 500 501 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 502 hci_connection->requested_security_level = LEVEL_0; 503 if (!hci_pairing_active(hci_connection)) return; 504 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 505 #ifdef ENABLE_CLASSIC_PAIRING_OOB 506 hci_connection->classic_oob_c_192 = NULL; 507 hci_connection->classic_oob_r_192 = NULL; 508 hci_connection->classic_oob_c_256 = NULL; 509 hci_connection->classic_oob_r_256 = NULL; 510 #endif 511 log_info("pairing complete, status %02x", status); 512 513 uint8_t event[11]; 514 event[0] = GAP_EVENT_PAIRING_COMPLETE; 515 event[1] = 9; 516 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 517 reverse_bd_addr(hci_connection->address, &event[4]); 518 event[10] = status; 519 hci_emit_event(event, sizeof(event), 1); 520 521 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 522 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 523 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 524 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 525 hci_connection->bonding_status = status; 526 } 527 } 528 529 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 530 hci_connection_t * conn = hci_connection_for_handle(handle); 531 if (!conn) return false; 532 return hci_pairing_active(conn); 533 } 534 535 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 536 if (!hci_stack->link_key_db) return; 537 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 538 hci_stack->link_key_db->delete_link_key(addr); 539 } 540 541 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 542 if (!hci_stack->link_key_db) return; 543 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 544 hci_stack->link_key_db->put_link_key(addr, link_key, type); 545 } 546 547 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 548 if (!hci_stack->link_key_db) return false; 549 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 550 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 551 return result; 552 } 553 554 void gap_delete_all_link_keys(void){ 555 bd_addr_t addr; 556 link_key_t link_key; 557 link_key_type_t type; 558 btstack_link_key_iterator_t it; 559 int ok = gap_link_key_iterator_init(&it); 560 if (!ok) { 561 log_error("could not initialize iterator"); 562 return; 563 } 564 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 565 gap_drop_link_key_for_bd_addr(addr); 566 } 567 gap_link_key_iterator_done(&it); 568 } 569 570 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 571 if (!hci_stack->link_key_db) return 0; 572 if (!hci_stack->link_key_db->iterator_init) return 0; 573 return hci_stack->link_key_db->iterator_init(it); 574 } 575 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){ 576 if (!hci_stack->link_key_db) return 0; 577 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 578 } 579 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 580 if (!hci_stack->link_key_db) return; 581 hci_stack->link_key_db->iterator_done(it); 582 } 583 #endif 584 585 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 586 switch (address_type){ 587 case BD_ADDR_TYPE_LE_PUBLIC: 588 case BD_ADDR_TYPE_LE_RANDOM: 589 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_PUBLIC: 590 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_RANDOM: 591 return true; 592 default: 593 return false; 594 } 595 } 596 597 static int hci_is_le_connection(hci_connection_t * connection){ 598 return hci_is_le_connection_type(connection->address_type); 599 } 600 601 /** 602 * count connections 603 */ 604 static int nr_hci_connections(void){ 605 int count = 0; 606 btstack_linked_item_t *it; 607 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 608 count++; 609 } 610 return count; 611 } 612 613 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 614 615 unsigned int num_packets_sent_classic = 0; 616 unsigned int num_packets_sent_le = 0; 617 618 btstack_linked_item_t *it; 619 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 620 hci_connection_t * connection = (hci_connection_t *) it; 621 if (hci_is_le_connection(connection)){ 622 num_packets_sent_le += connection->num_packets_sent; 623 } 624 if (connection->address_type == BD_ADDR_TYPE_ACL){ 625 num_packets_sent_classic += connection->num_packets_sent; 626 } 627 } 628 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 629 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 630 int free_slots_le = 0; 631 632 if (free_slots_classic < 0){ 633 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); 634 return 0; 635 } 636 637 if (hci_stack->le_acl_packets_total_num){ 638 // if we have LE slots, they are used 639 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 640 if (free_slots_le < 0){ 641 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); 642 return 0; 643 } 644 } else { 645 // otherwise, classic slots are used for LE, too 646 free_slots_classic -= num_packets_sent_le; 647 if (free_slots_classic < 0){ 648 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); 649 return 0; 650 } 651 } 652 653 switch (address_type){ 654 case BD_ADDR_TYPE_UNKNOWN: 655 log_error("hci_number_free_acl_slots: unknown address type"); 656 return 0; 657 658 case BD_ADDR_TYPE_ACL: 659 return (uint16_t) free_slots_classic; 660 661 default: 662 if (hci_stack->le_acl_packets_total_num > 0){ 663 return (uint16_t) free_slots_le; 664 } 665 return (uint16_t) free_slots_classic; 666 } 667 } 668 669 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 670 // get connection type 671 hci_connection_t * connection = hci_connection_for_handle(con_handle); 672 if (!connection){ 673 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 674 return 0; 675 } 676 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 677 } 678 679 #ifdef ENABLE_CLASSIC 680 static int hci_number_free_sco_slots(void){ 681 unsigned int num_sco_packets_sent = 0; 682 btstack_linked_item_t *it; 683 if (hci_stack->synchronous_flow_control_enabled){ 684 // explicit flow control 685 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 686 hci_connection_t * connection = (hci_connection_t *) it; 687 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 688 num_sco_packets_sent += connection->num_packets_sent; 689 } 690 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 691 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 692 return 0; 693 } 694 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 695 } else { 696 // implicit flow control -- TODO 697 int num_ready = 0; 698 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 699 hci_connection_t * connection = (hci_connection_t *) it; 700 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 701 if (connection->sco_tx_ready == 0) continue; 702 num_ready++; 703 } 704 return num_ready; 705 } 706 } 707 #endif 708 709 // only used to send HCI Host Number Completed Packets 710 static int hci_can_send_comand_packet_transport(void){ 711 if (hci_stack->hci_packet_buffer_reserved) return 0; 712 713 // check for async hci transport implementations 714 if (hci_stack->hci_transport->can_send_packet_now){ 715 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 716 return 0; 717 } 718 } 719 return 1; 720 } 721 722 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 723 bool hci_can_send_command_packet_now(void){ 724 if (hci_can_send_comand_packet_transport() == 0) return false; 725 return hci_stack->num_cmd_packets > 0u; 726 } 727 728 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 729 // check for async hci transport implementations 730 if (!hci_stack->hci_transport->can_send_packet_now) return true; 731 return hci_stack->hci_transport->can_send_packet_now(packet_type); 732 } 733 734 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 735 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 736 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 737 } 738 739 bool hci_can_send_acl_le_packet_now(void){ 740 if (hci_stack->hci_packet_buffer_reserved) return false; 741 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 742 } 743 744 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 745 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 746 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 747 } 748 749 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 750 if (hci_stack->hci_packet_buffer_reserved) return false; 751 return hci_can_send_prepared_acl_packet_now(con_handle); 752 } 753 754 #ifdef ENABLE_CLASSIC 755 bool hci_can_send_acl_classic_packet_now(void){ 756 if (hci_stack->hci_packet_buffer_reserved) return false; 757 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 758 } 759 760 bool hci_can_send_prepared_sco_packet_now(void){ 761 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 762 if (hci_have_usb_transport()){ 763 return hci_stack->sco_can_send_now; 764 } else { 765 return hci_number_free_sco_slots() > 0; 766 } 767 } 768 769 bool hci_can_send_sco_packet_now(void){ 770 if (hci_stack->hci_packet_buffer_reserved) return false; 771 return hci_can_send_prepared_sco_packet_now(); 772 } 773 774 void hci_request_sco_can_send_now_event(void){ 775 hci_stack->sco_waiting_for_can_send_now = 1; 776 hci_notify_if_sco_can_send_now(); 777 } 778 #endif 779 780 // used for internal checks in l2cap.c 781 bool hci_is_packet_buffer_reserved(void){ 782 return hci_stack->hci_packet_buffer_reserved; 783 } 784 785 // reserves outgoing packet buffer. 786 // @return 1 if successful 787 bool hci_reserve_packet_buffer(void){ 788 if (hci_stack->hci_packet_buffer_reserved) { 789 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 790 return false; 791 } 792 hci_stack->hci_packet_buffer_reserved = true; 793 return true; 794 } 795 796 void hci_release_packet_buffer(void){ 797 hci_stack->hci_packet_buffer_reserved = false; 798 } 799 800 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 801 static int hci_transport_synchronous(void){ 802 return hci_stack->hci_transport->can_send_packet_now == NULL; 803 } 804 805 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 806 807 // 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); 808 809 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 810 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 811 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 812 max_acl_data_packet_length = hci_stack->le_data_packets_length; 813 } 814 815 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 816 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 817 max_acl_data_packet_length = connection->le_max_tx_octets; 818 } 819 #endif 820 821 log_debug("hci_send_acl_packet_fragments entered"); 822 823 uint8_t status = ERROR_CODE_SUCCESS; 824 // multiple packets could be send on a synchronous HCI transport 825 while (true){ 826 827 log_debug("hci_send_acl_packet_fragments loop entered"); 828 829 // get current data 830 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 831 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 832 bool more_fragments = false; 833 834 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 835 if (current_acl_data_packet_length > max_acl_data_packet_length){ 836 more_fragments = true; 837 current_acl_data_packet_length = max_acl_data_packet_length; 838 } 839 840 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 841 if (acl_header_pos > 0u){ 842 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 843 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 844 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 845 } 846 847 // update header len 848 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 849 850 // count packet 851 connection->num_packets_sent++; 852 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 853 854 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 855 if (more_fragments){ 856 // update start of next fragment to send 857 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 858 } else { 859 // done 860 hci_stack->acl_fragmentation_pos = 0; 861 hci_stack->acl_fragmentation_total_size = 0; 862 } 863 864 // send packet 865 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 866 const int size = current_acl_data_packet_length + 4; 867 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 868 hci_stack->acl_fragmentation_tx_active = 1; 869 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 870 if (err != 0){ 871 // no error from HCI Transport expected 872 status = ERROR_CODE_HARDWARE_FAILURE; 873 } 874 875 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 876 877 // done yet? 878 if (!more_fragments) break; 879 880 // can send more? 881 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 882 } 883 884 log_debug("hci_send_acl_packet_fragments loop over"); 885 886 // release buffer now for synchronous transport 887 if (hci_transport_synchronous()){ 888 hci_stack->acl_fragmentation_tx_active = 0; 889 hci_release_packet_buffer(); 890 hci_emit_transport_packet_sent(); 891 } 892 893 return status; 894 } 895 896 // pre: caller has reserved the packet buffer 897 uint8_t hci_send_acl_packet_buffer(int size){ 898 btstack_assert(hci_stack->hci_packet_buffer_reserved); 899 900 uint8_t * packet = hci_stack->hci_packet_buffer; 901 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 902 903 // check for free places on Bluetooth module 904 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 905 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 906 hci_release_packet_buffer(); 907 hci_emit_transport_packet_sent(); 908 return BTSTACK_ACL_BUFFERS_FULL; 909 } 910 911 hci_connection_t *connection = hci_connection_for_handle( con_handle); 912 if (!connection) { 913 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 914 hci_release_packet_buffer(); 915 hci_emit_transport_packet_sent(); 916 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 917 } 918 919 #ifdef ENABLE_CLASSIC 920 hci_connection_timestamp(connection); 921 #endif 922 923 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 924 925 // setup data 926 hci_stack->acl_fragmentation_total_size = size; 927 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 928 929 return hci_send_acl_packet_fragments(connection); 930 } 931 932 #ifdef ENABLE_CLASSIC 933 // pre: caller has reserved the packet buffer 934 uint8_t hci_send_sco_packet_buffer(int size){ 935 btstack_assert(hci_stack->hci_packet_buffer_reserved); 936 937 uint8_t * packet = hci_stack->hci_packet_buffer; 938 939 // skip checks in loopback mode 940 if (!hci_stack->loopback_mode){ 941 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 942 943 // check for free places on Bluetooth module 944 if (!hci_can_send_prepared_sco_packet_now()) { 945 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 946 hci_release_packet_buffer(); 947 hci_emit_transport_packet_sent(); 948 return BTSTACK_ACL_BUFFERS_FULL; 949 } 950 951 // track send packet in connection struct 952 hci_connection_t *connection = hci_connection_for_handle( con_handle); 953 if (!connection) { 954 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 955 hci_release_packet_buffer(); 956 hci_emit_transport_packet_sent(); 957 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 958 } 959 960 if (hci_have_usb_transport()){ 961 // token used 962 hci_stack->sco_can_send_now = false; 963 } else { 964 if (hci_stack->synchronous_flow_control_enabled){ 965 connection->num_packets_sent++; 966 } else { 967 connection->sco_tx_ready--; 968 } 969 } 970 } 971 972 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 973 974 #ifdef HAVE_SCO_TRANSPORT 975 hci_stack->sco_transport->send_packet(packet, size); 976 hci_release_packet_buffer(); 977 hci_emit_transport_packet_sent(); 978 979 return 0; 980 #else 981 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 982 if (hci_transport_synchronous()){ 983 hci_release_packet_buffer(); 984 hci_emit_transport_packet_sent(); 985 } 986 987 if (err != 0){ 988 return ERROR_CODE_HARDWARE_FAILURE; 989 } 990 return ERROR_CODE_SUCCESS; 991 #endif 992 } 993 #endif 994 995 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 996 static uint8_t hci_send_iso_packet_fragments(void){ 997 998 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 999 uint8_t status = ERROR_CODE_SUCCESS; 1000 // multiple packets could be send on a synchronous HCI transport 1001 while (true){ 1002 1003 // get current data 1004 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1005 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1006 bool more_fragments = false; 1007 1008 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1009 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1010 more_fragments = true; 1011 current_iso_data_packet_length = max_iso_data_packet_length; 1012 } 1013 1014 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1015 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1016 uint8_t pb_flags; 1017 if (iso_header_pos == 0u){ 1018 // first fragment, keep TS field 1019 pb_flags = more_fragments ? 0x00 : 0x02; 1020 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1021 } else { 1022 // later fragment, drop TS field 1023 pb_flags = more_fragments ? 0x01 : 0x03; 1024 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1025 } 1026 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1027 1028 // update header len 1029 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1030 1031 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1032 if (more_fragments){ 1033 // update start of next fragment to send 1034 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1035 } else { 1036 // done 1037 hci_stack->iso_fragmentation_pos = 0; 1038 hci_stack->iso_fragmentation_total_size = 0; 1039 } 1040 1041 // send packet 1042 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1043 const int size = current_iso_data_packet_length + 4; 1044 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1045 hci_stack->iso_fragmentation_tx_active = true; 1046 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1047 if (err != 0){ 1048 // no error from HCI Transport expected 1049 status = ERROR_CODE_HARDWARE_FAILURE; 1050 } 1051 1052 // done yet? 1053 if (!more_fragments) break; 1054 1055 // can send more? 1056 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1057 } 1058 1059 // release buffer now for synchronous transport 1060 if (hci_transport_synchronous()){ 1061 hci_stack->iso_fragmentation_tx_active = false; 1062 hci_release_packet_buffer(); 1063 hci_emit_transport_packet_sent(); 1064 } 1065 1066 return status; 1067 } 1068 1069 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1070 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1071 1072 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1073 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1074 if (iso_stream == NULL){ 1075 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1076 } 1077 1078 // TODO: check for space on controller 1079 1080 // track outgoing packet sent 1081 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1082 iso_stream->num_packets_sent++; 1083 1084 // setup data 1085 hci_stack->iso_fragmentation_total_size = size; 1086 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1087 1088 return hci_send_iso_packet_fragments(); 1089 } 1090 #endif 1091 1092 static void acl_handler(uint8_t *packet, uint16_t size){ 1093 1094 // get info 1095 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1096 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1097 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1098 uint16_t acl_length = READ_ACL_LENGTH(packet); 1099 1100 // ignore non-registered handle 1101 if (!conn){ 1102 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1103 return; 1104 } 1105 1106 // assert packet is complete 1107 if ((acl_length + 4u) != size){ 1108 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1109 return; 1110 } 1111 1112 #ifdef ENABLE_CLASSIC 1113 // update idle timestamp 1114 hci_connection_timestamp(conn); 1115 #endif 1116 1117 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1118 hci_stack->host_completed_packets = 1; 1119 conn->num_packets_completed++; 1120 #endif 1121 1122 // handle different packet types 1123 switch (acl_flags & 0x03u) { 1124 1125 case 0x01: // continuation fragment 1126 1127 // sanity checks 1128 if (conn->acl_recombination_pos == 0u) { 1129 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1130 return; 1131 } 1132 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1133 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1134 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1135 conn->acl_recombination_pos = 0; 1136 return; 1137 } 1138 1139 // append fragment payload (header already stored) 1140 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1141 &packet[4], acl_length); 1142 conn->acl_recombination_pos += acl_length; 1143 1144 // forward complete L2CAP packet if complete. 1145 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1146 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1147 // reset recombination buffer 1148 conn->acl_recombination_length = 0; 1149 conn->acl_recombination_pos = 0; 1150 } 1151 break; 1152 1153 case 0x02: { // first fragment 1154 1155 // sanity check 1156 if (conn->acl_recombination_pos) { 1157 log_error( "ACL First Fragment but data in buffer for handle 0x%02x, dropping stale fragments", con_handle); 1158 conn->acl_recombination_pos = 0; 1159 } 1160 1161 // peek into L2CAP packet! 1162 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1163 1164 // compare fragment size to L2CAP packet size 1165 if (acl_length >= (l2cap_length + 4u)){ 1166 // forward fragment as L2CAP packet 1167 hci_emit_acl_packet(packet, acl_length + 4u); 1168 } else { 1169 1170 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1171 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1172 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1173 return; 1174 } 1175 1176 // store first fragment and tweak acl length for complete package 1177 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1178 packet, acl_length + 4u); 1179 conn->acl_recombination_pos = acl_length + 4u; 1180 conn->acl_recombination_length = l2cap_length; 1181 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1182 } 1183 break; 1184 1185 } 1186 default: 1187 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1188 return; 1189 } 1190 1191 // execute main loop 1192 hci_run(); 1193 } 1194 1195 static void hci_connection_stop_timer(hci_connection_t * conn){ 1196 btstack_run_loop_remove_timer(&conn->timeout); 1197 #ifdef ENABLE_CLASSIC 1198 btstack_run_loop_remove_timer(&conn->timeout_sco); 1199 #endif 1200 } 1201 1202 static void hci_shutdown_connection(hci_connection_t *conn){ 1203 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1204 1205 #ifdef ENABLE_CLASSIC 1206 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1207 bd_addr_type_t addr_type = conn->address_type; 1208 #endif 1209 #ifdef HAVE_SCO_TRANSPORT 1210 hci_con_handle_t con_handle = conn->con_handle; 1211 #endif 1212 #endif 1213 1214 hci_connection_stop_timer(conn); 1215 1216 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1217 btstack_memory_hci_connection_free( conn ); 1218 1219 // now it's gone 1220 hci_emit_nr_connections_changed(); 1221 1222 #ifdef ENABLE_CLASSIC 1223 #ifdef ENABLE_SCO_OVER_HCI 1224 // update SCO 1225 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1226 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1227 } 1228 #endif 1229 #ifdef HAVE_SCO_TRANSPORT 1230 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1231 hci_stack->sco_transport->close(con_handle); 1232 } 1233 #endif 1234 #endif 1235 } 1236 1237 #ifdef ENABLE_CLASSIC 1238 1239 static const uint16_t packet_type_sizes[] = { 1240 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1241 HCI_ACL_DH1_SIZE, 0, 0, 0, 1242 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1243 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1244 }; 1245 static const uint8_t packet_type_feature_requirement_bit[] = { 1246 0, // 3 slot packets 1247 1, // 5 slot packets 1248 25, // EDR 2 mpbs 1249 26, // EDR 3 mbps 1250 39, // 3 slot EDR packts 1251 40, // 5 slot EDR packet 1252 }; 1253 static const uint16_t packet_type_feature_packet_mask[] = { 1254 0x0f00, // 3 slot packets 1255 0xf000, // 5 slot packets 1256 0x1102, // EDR 2 mpbs 1257 0x2204, // EDR 3 mbps 1258 0x0300, // 3 slot EDR packts 1259 0x3000, // 5 slot EDR packet 1260 }; 1261 1262 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1263 // enable packet types based on size 1264 uint16_t packet_types = 0; 1265 unsigned int i; 1266 for (i=0;i<16;i++){ 1267 if (packet_type_sizes[i] == 0) continue; 1268 if (packet_type_sizes[i] <= buffer_size){ 1269 packet_types |= 1 << i; 1270 } 1271 } 1272 // disable packet types due to missing local supported features 1273 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1274 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1275 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1276 if (feature_set) continue; 1277 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1278 packet_types &= ~packet_type_feature_packet_mask[i]; 1279 } 1280 // flip bits for "may not be used" 1281 packet_types ^= 0x3306; 1282 return packet_types; 1283 } 1284 1285 uint16_t hci_usable_acl_packet_types(void){ 1286 return hci_stack->packet_types; 1287 } 1288 #endif 1289 1290 uint8_t* hci_get_outgoing_packet_buffer(void){ 1291 // hci packet buffer is >= acl data packet length 1292 return hci_stack->hci_packet_buffer; 1293 } 1294 1295 uint16_t hci_max_acl_data_packet_length(void){ 1296 return hci_stack->acl_data_packet_length; 1297 } 1298 1299 #ifdef ENABLE_CLASSIC 1300 bool hci_extended_sco_link_supported(void){ 1301 // No. 31, byte 3, bit 7 1302 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1303 } 1304 #endif 1305 1306 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1307 // No. 54, byte 6, bit 6 1308 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1309 } 1310 1311 #ifdef ENABLE_CLASSIC 1312 static int gap_ssp_supported(void){ 1313 // No. 51, byte 6, bit 3 1314 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1315 } 1316 #endif 1317 1318 static int hci_classic_supported(void){ 1319 #ifdef ENABLE_CLASSIC 1320 // No. 37, byte 4, bit 5, = No BR/EDR Support 1321 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1322 #else 1323 return 0; 1324 #endif 1325 } 1326 1327 static int hci_le_supported(void){ 1328 #ifdef ENABLE_BLE 1329 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1330 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1331 #else 1332 return 0; 1333 #endif 1334 } 1335 1336 static bool hci_command_supported(uint8_t command_index){ 1337 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1338 } 1339 1340 #ifdef ENABLE_BLE 1341 1342 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1343 static bool hci_extended_advertising_supported(void){ 1344 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1345 } 1346 #endif 1347 1348 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1349 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1350 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1351 } else { 1352 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1353 } 1354 } 1355 1356 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1357 *addr_type = hci_stack->le_own_addr_type; 1358 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1359 } 1360 1361 #ifdef ENABLE_LE_PERIPHERAL 1362 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1363 *addr_type = hci_stack->le_advertisements_own_addr_type; 1364 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1365 }; 1366 #endif 1367 1368 #ifdef ENABLE_LE_CENTRAL 1369 1370 /** 1371 * @brief Get own addr type and address used for LE connections (Central) 1372 */ 1373 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1374 *addr_type = hci_stack->le_connection_own_addr_type; 1375 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1376 } 1377 1378 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1379 1380 uint16_t offset = 3; 1381 uint8_t num_reports = packet[offset]; 1382 offset += 1; 1383 1384 uint16_t i; 1385 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1386 for (i=0; (i<num_reports) && (offset < size);i++){ 1387 // sanity checks on data_length: 1388 uint8_t data_length = packet[offset + 8]; 1389 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1390 if ((offset + 9u + data_length + 1u) > size) return; 1391 // setup event 1392 uint8_t event_size = 10u + data_length; 1393 uint16_t pos = 0; 1394 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1395 event[pos++] = event_size; 1396 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1397 offset += 8; 1398 pos += 8; 1399 event[pos++] = packet[offset + 1 + data_length]; // rssi 1400 event[pos++] = data_length; 1401 offset++; 1402 (void)memcpy(&event[pos], &packet[offset], data_length); 1403 pos += data_length; 1404 offset += data_length + 1u; // rssi 1405 hci_emit_event(event, pos, 1); 1406 } 1407 } 1408 1409 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1410 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1411 uint16_t offset = 3; 1412 uint8_t num_reports = packet[offset++]; 1413 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1414 uint8_t i; 1415 for (i=0; (i<num_reports) && (offset < size);i++){ 1416 // sanity checks on data_length: 1417 uint16_t data_length = packet[offset + 23]; 1418 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1419 if ((offset + 24u + data_length) > size) return; 1420 uint16_t event_type = little_endian_read_16(packet, offset); 1421 offset += 2; 1422 if ((event_type & 0x10) != 0) { 1423 // setup legacy event 1424 uint8_t legacy_event_type; 1425 switch (event_type){ 1426 case 0b0010011: 1427 // ADV_IND 1428 legacy_event_type = 0; 1429 break; 1430 case 0b0010101: 1431 // ADV_DIRECT_IND 1432 legacy_event_type = 1; 1433 break; 1434 case 0b0010010: 1435 // ADV_SCAN_IND 1436 legacy_event_type = 2; 1437 break; 1438 case 0b0010000: 1439 // ADV_NONCONN_IND 1440 legacy_event_type = 3; 1441 break; 1442 case 0b0011011: 1443 case 0b0011010: 1444 // SCAN_RSP 1445 legacy_event_type = 4; 1446 break; 1447 default: 1448 legacy_event_type = 0; 1449 break; 1450 } 1451 uint16_t pos = 0; 1452 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1453 event[pos++] = 10u + data_length; 1454 event[pos++] = legacy_event_type; 1455 // copy address type + address 1456 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1457 offset += 7; 1458 pos += 7; 1459 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1460 offset += 4; 1461 // copy rssi 1462 event[pos++] = packet[offset++]; 1463 // skip periodic advertising interval and direct address 1464 offset += 9; 1465 // copy data len + data; 1466 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1467 pos += 1 +data_length; 1468 offset += 1+ data_length; 1469 hci_emit_event(event, pos, 1); 1470 } else { 1471 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1472 uint8_t report_len = 24 + data_length; 1473 event[1] = report_len; 1474 little_endian_store_16(event, 2, event_type); 1475 memcpy(&event[4], &packet[offset], report_len); 1476 offset += report_len; 1477 hci_emit_event(event, 2 + report_len, 1); 1478 } 1479 } 1480 } 1481 #endif 1482 1483 #endif 1484 #endif 1485 1486 #ifdef ENABLE_BLE 1487 #ifdef ENABLE_LE_PERIPHERAL 1488 static void hci_update_advertisements_enabled_for_current_roles(void){ 1489 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1490 // get number of active le slave connections 1491 int num_slave_connections = 0; 1492 btstack_linked_list_iterator_t it; 1493 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1494 while (btstack_linked_list_iterator_has_next(&it)){ 1495 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1496 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1497 if (con->state != OPEN) continue; 1498 if (con->role != HCI_ROLE_SLAVE) continue; 1499 if (!hci_is_le_connection(con)) continue; 1500 num_slave_connections++; 1501 } 1502 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1503 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1504 } else { 1505 hci_stack->le_advertisements_enabled_for_current_roles = false; 1506 } 1507 } 1508 #endif 1509 #endif 1510 1511 #ifdef ENABLE_CLASSIC 1512 static void gap_run_set_local_name(void){ 1513 hci_reserve_packet_buffer(); 1514 uint8_t * packet = hci_stack->hci_packet_buffer; 1515 // construct HCI Command and send 1516 uint16_t opcode = hci_write_local_name.opcode; 1517 hci_stack->last_cmd_opcode = opcode; 1518 packet[0] = opcode & 0xff; 1519 packet[1] = opcode >> 8; 1520 packet[2] = DEVICE_NAME_LEN; 1521 memset(&packet[3], 0, DEVICE_NAME_LEN); 1522 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1523 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1524 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1525 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1526 // expand '00:00:00:00:00:00' in name with bd_addr 1527 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1528 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1529 } 1530 1531 static void gap_run_set_eir_data(void){ 1532 hci_reserve_packet_buffer(); 1533 uint8_t * packet = hci_stack->hci_packet_buffer; 1534 // construct HCI Command in-place and send 1535 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1536 hci_stack->last_cmd_opcode = opcode; 1537 uint16_t offset = 0; 1538 packet[offset++] = opcode & 0xff; 1539 packet[offset++] = opcode >> 8; 1540 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1541 packet[offset++] = 0; // FEC not required 1542 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1543 if (hci_stack->eir_data){ 1544 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1545 ad_context_t context; 1546 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1547 uint8_t data_type = ad_iterator_get_data_type(&context); 1548 uint8_t size = ad_iterator_get_data_len(&context); 1549 const uint8_t *data = ad_iterator_get_data(&context); 1550 // copy item 1551 packet[offset++] = size + 1; 1552 packet[offset++] = data_type; 1553 memcpy(&packet[offset], data, size); 1554 // update name item 1555 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1556 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1557 } 1558 offset += size; 1559 } 1560 } else { 1561 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1562 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1563 packet[offset++] = bytes_to_copy + 1; 1564 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1565 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1566 // expand '00:00:00:00:00:00' in name with bd_addr 1567 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1568 } 1569 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1570 } 1571 1572 static void hci_run_gap_tasks_classic(void){ 1573 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1574 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1575 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1576 return; 1577 } 1578 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1579 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1580 gap_run_set_local_name(); 1581 return; 1582 } 1583 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1584 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1585 gap_run_set_eir_data(); 1586 return; 1587 } 1588 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1589 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1590 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1591 return; 1592 } 1593 // write page scan activity 1594 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1595 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1596 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1597 return; 1598 } 1599 // write page scan type 1600 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1601 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1602 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1603 return; 1604 } 1605 // write page timeout 1606 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1607 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1608 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1609 return; 1610 } 1611 // send scan enable 1612 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1613 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1614 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1615 return; 1616 } 1617 // send write scan activity 1618 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1619 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1620 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1621 return; 1622 } 1623 } 1624 #endif 1625 1626 #ifndef HAVE_HOST_CONTROLLER_API 1627 1628 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1629 if (!hci_stack->config) return 0; 1630 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1631 // Limit baud rate for Broadcom chipsets to 3 mbps 1632 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1633 baud_rate = 3000000; 1634 } 1635 return baud_rate; 1636 } 1637 1638 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1639 UNUSED(ds); 1640 1641 switch (hci_stack->substate){ 1642 case HCI_INIT_W4_SEND_RESET: 1643 log_info("Resend HCI Reset"); 1644 hci_stack->substate = HCI_INIT_SEND_RESET; 1645 hci_stack->num_cmd_packets = 1; 1646 hci_run(); 1647 break; 1648 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1649 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1650 if (hci_stack->hci_transport->reset_link){ 1651 hci_stack->hci_transport->reset_link(); 1652 } 1653 1654 /* fall through */ 1655 1656 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1657 log_info("Resend HCI Reset - CSR Warm Boot"); 1658 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1659 hci_stack->num_cmd_packets = 1; 1660 hci_run(); 1661 break; 1662 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1663 if (hci_stack->hci_transport->set_baudrate){ 1664 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1665 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1666 hci_stack->hci_transport->set_baudrate(baud_rate); 1667 } 1668 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1669 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1670 if (hci_stack->hci_transport->reset_link){ 1671 log_info("Link Reset"); 1672 hci_stack->hci_transport->reset_link(); 1673 } 1674 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1675 hci_run(); 1676 } 1677 break; 1678 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1679 // otherwise continue 1680 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1681 hci_send_cmd(&hci_read_local_supported_commands); 1682 break; 1683 default: 1684 break; 1685 } 1686 } 1687 #endif 1688 1689 static void hci_initializing_next_state(void){ 1690 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1691 } 1692 1693 static void hci_init_done(void){ 1694 // done. tell the app 1695 log_info("hci_init_done -> HCI_STATE_WORKING"); 1696 hci_stack->state = HCI_STATE_WORKING; 1697 hci_emit_state(); 1698 } 1699 1700 // assumption: hci_can_send_command_packet_now() == true 1701 static void hci_initializing_run(void){ 1702 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1703 1704 if (!hci_can_send_command_packet_now()) return; 1705 1706 #ifndef HAVE_HOST_CONTROLLER_API 1707 bool need_baud_change = hci_stack->config 1708 && hci_stack->chipset 1709 && hci_stack->chipset->set_baudrate_command 1710 && hci_stack->hci_transport->set_baudrate 1711 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1712 #endif 1713 1714 switch (hci_stack->substate){ 1715 case HCI_INIT_SEND_RESET: 1716 hci_state_reset(); 1717 1718 #ifndef HAVE_HOST_CONTROLLER_API 1719 // prepare reset if command complete not received in 100ms 1720 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1721 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1722 btstack_run_loop_add_timer(&hci_stack->timeout); 1723 #endif 1724 // send command 1725 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1726 hci_send_cmd(&hci_reset); 1727 break; 1728 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1729 hci_send_cmd(&hci_read_local_version_information); 1730 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1731 break; 1732 1733 #ifndef HAVE_HOST_CONTROLLER_API 1734 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1735 hci_state_reset(); 1736 // prepare reset if command complete not received in 100ms 1737 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1738 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1739 btstack_run_loop_add_timer(&hci_stack->timeout); 1740 // send command 1741 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1742 hci_send_cmd(&hci_reset); 1743 break; 1744 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1745 hci_state_reset(); 1746 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1747 hci_send_cmd(&hci_reset); 1748 break; 1749 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1750 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1751 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1752 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1753 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1754 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1755 break; 1756 } 1757 case HCI_INIT_SET_BD_ADDR: 1758 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1759 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1760 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1761 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1762 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1763 break; 1764 case HCI_INIT_SEND_READ_LOCAL_NAME: 1765 #ifdef ENABLE_CLASSIC 1766 hci_send_cmd(&hci_read_local_name); 1767 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1768 break; 1769 #endif 1770 /* fall through */ 1771 1772 case HCI_INIT_SEND_BAUD_CHANGE: 1773 if (need_baud_change) { 1774 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1775 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1776 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1777 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1778 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1779 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1780 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1781 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1782 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1783 btstack_run_loop_add_timer(&hci_stack->timeout); 1784 } 1785 break; 1786 } 1787 1788 /* fall through */ 1789 1790 case HCI_INIT_CUSTOM_INIT: 1791 // Custom initialization 1792 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1793 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1794 bool send_cmd = false; 1795 switch (hci_stack->chipset_result){ 1796 case BTSTACK_CHIPSET_VALID_COMMAND: 1797 send_cmd = true; 1798 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1799 break; 1800 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1801 send_cmd = true; 1802 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1803 log_info("CSR Warm Boot"); 1804 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1805 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1806 btstack_run_loop_add_timer(&hci_stack->timeout); 1807 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1808 && hci_stack->config 1809 && hci_stack->chipset 1810 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1811 && hci_stack->hci_transport->set_baudrate 1812 && hci_transport_uart_get_main_baud_rate()){ 1813 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1814 } else { 1815 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1816 } 1817 break; 1818 default: 1819 break; 1820 } 1821 1822 if (send_cmd){ 1823 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1824 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1825 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1826 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1827 break; 1828 } 1829 log_info("Init script done"); 1830 1831 // Init script download on Broadcom chipsets causes: 1832 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1833 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1834 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1835 1836 // - baud rate to reset, restore UART baud rate if needed 1837 if (need_baud_change) { 1838 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1839 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1840 hci_stack->hci_transport->set_baudrate(baud_rate); 1841 } 1842 1843 uint16_t bcm_delay_ms = 300; 1844 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1845 // -> Work around: wait here. 1846 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1847 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1848 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1849 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1850 btstack_run_loop_add_timer(&hci_stack->timeout); 1851 break; 1852 } 1853 } 1854 #endif 1855 /* fall through */ 1856 1857 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1858 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1859 hci_send_cmd(&hci_read_local_supported_commands); 1860 break; 1861 case HCI_INIT_READ_BD_ADDR: 1862 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1863 hci_send_cmd(&hci_read_bd_addr); 1864 break; 1865 case HCI_INIT_READ_BUFFER_SIZE: 1866 // only read buffer size if supported 1867 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1868 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1869 hci_send_cmd(&hci_read_buffer_size); 1870 break; 1871 } 1872 1873 /* fall through */ 1874 1875 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1876 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1877 hci_send_cmd(&hci_read_local_supported_features); 1878 break; 1879 1880 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1881 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1882 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1883 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1884 break; 1885 case HCI_INIT_HOST_BUFFER_SIZE: 1886 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1887 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1888 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1889 break; 1890 #endif 1891 1892 case HCI_INIT_SET_EVENT_MASK: 1893 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1894 if (hci_le_supported()){ 1895 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1896 } else { 1897 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1898 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1899 } 1900 break; 1901 1902 case HCI_INIT_SET_EVENT_MASK_2: 1903 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 1904 // setting Event Mask 2 causes Controller to drop Encryption Change events. 1905 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 1906 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 1907 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 1908 // Encryption Change Event v2 - bit 25 1909 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 1910 break; 1911 } 1912 1913 #ifdef ENABLE_CLASSIC 1914 /* fall through */ 1915 1916 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 1917 if (hci_classic_supported() && gap_ssp_supported()){ 1918 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 1919 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 1920 break; 1921 } 1922 1923 /* fall through */ 1924 1925 case HCI_INIT_WRITE_INQUIRY_MODE: 1926 if (hci_classic_supported()){ 1927 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 1928 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 1929 break; 1930 } 1931 1932 /* fall through */ 1933 1934 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 1935 // skip write secure connections host support if not supported or disabled 1936 if (hci_classic_supported() && hci_stack->secure_connections_enable 1937 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 1938 hci_stack->secure_connections_active = true; 1939 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 1940 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 1941 break; 1942 } 1943 1944 /* fall through */ 1945 1946 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 1947 // skip set min encryption key size 1948 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 1949 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 1950 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 1951 break; 1952 } 1953 1954 #ifdef ENABLE_SCO_OVER_HCI 1955 /* fall through */ 1956 1957 // only sent if ENABLE_SCO_OVER_HCI is defined 1958 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 1959 // skip write synchronous flow control if not supported 1960 if (hci_classic_supported() 1961 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 1962 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 1963 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 1964 break; 1965 } 1966 /* fall through */ 1967 1968 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 1969 // skip write default erroneous data reporting if not supported 1970 if (hci_classic_supported() 1971 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 1972 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 1973 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 1974 break; 1975 } 1976 #endif 1977 1978 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 1979 /* fall through */ 1980 1981 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 1982 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 1983 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 1984 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 1985 #ifdef ENABLE_SCO_OVER_HCI 1986 log_info("BCM: Route SCO data via HCI transport"); 1987 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 1988 #endif 1989 #ifdef ENABLE_SCO_OVER_PCM 1990 log_info("BCM: Route SCO data via PCM interface"); 1991 #ifdef ENABLE_BCM_PCM_WBS 1992 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 1993 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 1994 #else 1995 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 1996 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 1997 #endif 1998 #endif 1999 break; 2000 } 2001 #endif 2002 2003 #ifdef ENABLE_SCO_OVER_PCM 2004 /* fall through */ 2005 2006 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2007 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2008 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2009 log_info("BCM: Config PCM interface for I2S"); 2010 #ifdef ENABLE_BCM_PCM_WBS 2011 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2012 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2013 #else 2014 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2015 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2016 #endif 2017 break; 2018 } 2019 #endif 2020 #endif 2021 2022 #ifdef ENABLE_BLE 2023 /* fall through */ 2024 2025 // LE INIT 2026 case HCI_INIT_LE_READ_BUFFER_SIZE: 2027 if (hci_le_supported()){ 2028 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2029 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2030 hci_send_cmd(&hci_le_read_buffer_size_v2); 2031 } else { 2032 hci_send_cmd(&hci_le_read_buffer_size); 2033 } 2034 break; 2035 } 2036 2037 /* fall through */ 2038 2039 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2040 // skip write le host if not supported (e.g. on LE only EM9301) 2041 if (hci_le_supported() 2042 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2043 // LE Supported Host = 1, Simultaneous Host = 0 2044 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2045 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2046 break; 2047 } 2048 2049 /* fall through */ 2050 2051 case HCI_INIT_LE_SET_EVENT_MASK: 2052 if (hci_le_supported()){ 2053 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2054 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2055 break; 2056 } 2057 #endif 2058 2059 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2060 /* fall through */ 2061 2062 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2063 if (hci_le_supported() 2064 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2065 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2066 hci_send_cmd(&hci_le_read_maximum_data_length); 2067 break; 2068 } 2069 2070 /* fall through */ 2071 2072 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2073 if (hci_le_supported() 2074 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2075 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2076 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2077 break; 2078 } 2079 #endif 2080 2081 #ifdef ENABLE_LE_CENTRAL 2082 /* fall through */ 2083 2084 case HCI_INIT_READ_WHITE_LIST_SIZE: 2085 if (hci_le_supported()){ 2086 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2087 hci_send_cmd(&hci_le_read_white_list_size); 2088 break; 2089 } 2090 2091 #endif 2092 2093 #ifdef ENABLE_LE_PERIPHERAL 2094 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2095 /* fall through */ 2096 2097 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2098 if (hci_extended_advertising_supported()){ 2099 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2100 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2101 break; 2102 } 2103 #endif 2104 #endif 2105 /* fall through */ 2106 2107 case HCI_INIT_DONE: 2108 hci_stack->substate = HCI_INIT_DONE; 2109 // main init sequence complete 2110 #ifdef ENABLE_CLASSIC 2111 // check if initial Classic GAP Tasks are completed 2112 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2113 hci_run_gap_tasks_classic(); 2114 break; 2115 } 2116 #endif 2117 #ifdef ENABLE_BLE 2118 #ifdef ENABLE_LE_CENTRAL 2119 // check if initial LE GAP Tasks are completed 2120 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2121 hci_run_general_gap_le(); 2122 break; 2123 } 2124 #endif 2125 #endif 2126 hci_init_done(); 2127 break; 2128 2129 default: 2130 return; 2131 } 2132 } 2133 2134 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2135 bool command_completed = false; 2136 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2137 uint16_t opcode = little_endian_read_16(packet,3); 2138 if (opcode == hci_stack->last_cmd_opcode){ 2139 command_completed = true; 2140 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2141 } else { 2142 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2143 } 2144 } 2145 2146 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2147 uint8_t status = packet[2]; 2148 uint16_t opcode = little_endian_read_16(packet,4); 2149 if (opcode == hci_stack->last_cmd_opcode){ 2150 if (status){ 2151 command_completed = true; 2152 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2153 } else { 2154 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2155 } 2156 } else { 2157 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2158 } 2159 } 2160 #ifndef HAVE_HOST_CONTROLLER_API 2161 // Vendor == CSR 2162 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2163 // TODO: track actual command 2164 command_completed = true; 2165 } 2166 2167 // Vendor == Toshiba 2168 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2169 // TODO: track actual command 2170 command_completed = true; 2171 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2172 hci_stack->num_cmd_packets = 1; 2173 } 2174 #endif 2175 2176 return command_completed; 2177 } 2178 2179 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2180 2181 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2182 2183 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2184 2185 #ifndef HAVE_HOST_CONTROLLER_API 2186 2187 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2188 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2189 // 2190 // HCI Reset 2191 // Timeout 100 ms 2192 // HCI Reset 2193 // Command Complete Reset 2194 // HCI Read Local Version Information 2195 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2196 // hang... 2197 // 2198 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2199 if (!command_completed 2200 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2201 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2202 2203 uint16_t opcode = little_endian_read_16(packet,3); 2204 if (opcode == hci_reset.opcode){ 2205 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2206 return; 2207 } 2208 } 2209 2210 // CSR & H5 2211 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2212 if (!command_completed 2213 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2214 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2215 2216 uint16_t opcode = little_endian_read_16(packet,3); 2217 if (opcode == hci_reset.opcode){ 2218 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2219 return; 2220 } 2221 } 2222 2223 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2224 // fix: Correct substate and behave as command below 2225 if (command_completed){ 2226 switch (hci_stack->substate){ 2227 case HCI_INIT_SEND_RESET: 2228 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2229 break; 2230 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2231 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2232 break; 2233 default: 2234 break; 2235 } 2236 } 2237 2238 #endif 2239 2240 if (!command_completed) return; 2241 2242 bool need_baud_change = false; 2243 bool need_addr_change = false; 2244 2245 #ifndef HAVE_HOST_CONTROLLER_API 2246 need_baud_change = hci_stack->config 2247 && hci_stack->chipset 2248 && hci_stack->chipset->set_baudrate_command 2249 && hci_stack->hci_transport->set_baudrate 2250 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2251 2252 need_addr_change = hci_stack->custom_bd_addr_set 2253 && hci_stack->chipset 2254 && hci_stack->chipset->set_bd_addr_command; 2255 #endif 2256 2257 switch(hci_stack->substate){ 2258 2259 #ifndef HAVE_HOST_CONTROLLER_API 2260 case HCI_INIT_SEND_RESET: 2261 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2262 // fix: just correct substate and behave as command below 2263 2264 /* fall through */ 2265 #endif 2266 2267 case HCI_INIT_W4_SEND_RESET: 2268 btstack_run_loop_remove_timer(&hci_stack->timeout); 2269 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2270 return; 2271 2272 #ifndef HAVE_HOST_CONTROLLER_API 2273 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2274 // for STLC2500D, baud rate change already happened. 2275 // for others, baud rate gets changed now 2276 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2277 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2278 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2279 hci_stack->hci_transport->set_baudrate(baud_rate); 2280 } 2281 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2282 return; 2283 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2284 btstack_run_loop_remove_timer(&hci_stack->timeout); 2285 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2286 return; 2287 case HCI_INIT_W4_CUSTOM_INIT: 2288 // repeat custom init 2289 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2290 return; 2291 #endif 2292 2293 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2294 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2295 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2296 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2297 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2298 return; 2299 } 2300 if (need_addr_change){ 2301 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2302 return; 2303 } 2304 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2305 return; 2306 #ifndef HAVE_HOST_CONTROLLER_API 2307 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2308 if (need_baud_change){ 2309 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2310 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2311 hci_stack->hci_transport->set_baudrate(baud_rate); 2312 } 2313 if (need_addr_change){ 2314 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2315 return; 2316 } 2317 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2318 return; 2319 case HCI_INIT_W4_SET_BD_ADDR: 2320 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2321 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2322 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2323 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2324 return; 2325 } 2326 // skipping st warm boot 2327 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2328 return; 2329 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2330 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2331 return; 2332 #endif 2333 2334 case HCI_INIT_DONE: 2335 // set state if we came here by fall through 2336 hci_stack->substate = HCI_INIT_DONE; 2337 return; 2338 2339 default: 2340 break; 2341 } 2342 hci_initializing_next_state(); 2343 } 2344 2345 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2346 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2347 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2348 // check if we have been aware of the HCI connection 2349 switch (conn->state){ 2350 case SENT_CREATE_CONNECTION: 2351 case RECEIVED_CONNECTION_REQUEST: 2352 break; 2353 default: 2354 return; 2355 } 2356 2357 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2358 bd_addr_t bd_address; 2359 (void)memcpy(&bd_address, conn->address, 6); 2360 2361 #ifdef ENABLE_CLASSIC 2362 // cache needed data 2363 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2364 #endif 2365 2366 // connection failed, remove entry 2367 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2368 btstack_memory_hci_connection_free( conn ); 2369 2370 #ifdef ENABLE_CLASSIC 2371 // notify client if dedicated bonding 2372 if (notify_dedicated_bonding_failed){ 2373 log_info("hci notify_dedicated_bonding_failed"); 2374 hci_emit_dedicated_bonding_result(bd_address, status); 2375 } 2376 2377 // if authentication error, also delete link key 2378 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2379 gap_drop_link_key_for_bd_addr(bd_address); 2380 } 2381 #else 2382 UNUSED(status); 2383 #endif 2384 } 2385 2386 #ifdef ENABLE_CLASSIC 2387 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2388 // SSP Controller 2389 if (features[6] & (1 << 3)){ 2390 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2391 } 2392 // eSCO 2393 if (features[3] & (1<<7)){ 2394 conn->remote_supported_features[0] |= 1; 2395 } 2396 // Extended features 2397 if (features[7] & (1<<7)){ 2398 conn->remote_supported_features[0] |= 2; 2399 } 2400 } 2401 2402 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2403 // SSP Host 2404 if (features[0] & (1 << 0)){ 2405 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2406 } 2407 // SC Host 2408 if (features[0] & (1 << 3)){ 2409 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2410 } 2411 } 2412 2413 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2414 // SC Controller 2415 if (features[1] & (1 << 0)){ 2416 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2417 } 2418 } 2419 2420 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2421 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2422 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2423 log_info("Remote features %02x, bonding flags %x", conn->remote_supported_features[0], conn->bonding_flags); 2424 if (conn->bonding_flags & BONDING_DEDICATED){ 2425 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2426 } 2427 } 2428 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2429 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2430 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2431 } 2432 2433 #endif 2434 2435 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2436 // handle BT initialization 2437 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2438 hci_initializing_event_handler(packet, size); 2439 } 2440 2441 // help with BT sleep 2442 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2443 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2444 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2445 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2446 hci_initializing_next_state(); 2447 } 2448 } 2449 2450 #ifdef ENABLE_CLASSIC 2451 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2452 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2453 conn->encryption_key_size = encryption_key_size; 2454 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2455 2456 // trigger disconnect for dedicated bonding, skip emit security level as disconnect is pending 2457 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2458 conn->bonding_flags &= ~BONDING_DEDICATED; 2459 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2460 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2461 return; 2462 } 2463 2464 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2465 conn->requested_security_level = LEVEL_0; 2466 hci_emit_security_level(conn->con_handle, security_level); 2467 return; 2468 } 2469 2470 // Request remote features if not already done 2471 hci_trigger_remote_features_for_connection(conn); 2472 2473 // Request Authentication if not already done 2474 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2475 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2476 } 2477 #endif 2478 2479 static void hci_store_local_supported_commands(const uint8_t * packet){ 2480 // create mapping table 2481 #define X(name, offset, bit) { offset, bit }, 2482 static struct { 2483 uint8_t byte_offset; 2484 uint8_t bit_position; 2485 } supported_hci_commands_map [] = { 2486 SUPPORTED_HCI_COMMANDS 2487 }; 2488 #undef X 2489 2490 // create names for debug purposes 2491 #ifdef ENABLE_LOG_DEBUG 2492 #define X(name, offset, bit) #name, 2493 static const char * command_names[] = { 2494 SUPPORTED_HCI_COMMANDS 2495 }; 2496 #undef X 2497 #endif 2498 2499 hci_stack->local_supported_commands = 0; 2500 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2501 uint16_t i; 2502 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2503 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2504 #ifdef ENABLE_LOG_DEBUG 2505 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); 2506 #else 2507 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2508 #endif 2509 hci_stack->local_supported_commands |= (1LU << i); 2510 } 2511 } 2512 log_info("Local supported commands summary %04x", hci_stack->local_supported_commands); 2513 } 2514 2515 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2516 UNUSED(size); 2517 2518 uint16_t manufacturer; 2519 #ifdef ENABLE_CLASSIC 2520 hci_con_handle_t handle; 2521 hci_connection_t * conn; 2522 #endif 2523 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2524 uint8_t status; 2525 #endif 2526 // get num cmd packets - limit to 1 to reduce complexity 2527 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2528 2529 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2530 switch (opcode){ 2531 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2532 if (packet[5]) break; 2533 // terminate, name 248 chars 2534 packet[6+248] = 0; 2535 log_info("local name: %s", &packet[6]); 2536 break; 2537 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2538 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2539 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2540 uint16_t acl_len = little_endian_read_16(packet, 6); 2541 uint16_t sco_len = packet[8]; 2542 2543 // determine usable ACL/SCO payload size 2544 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2545 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2546 2547 hci_stack->acl_packets_total_num = (uint8_t) little_endian_read_16(packet, 9); 2548 hci_stack->sco_packets_total_num = (uint8_t) little_endian_read_16(packet, 11); 2549 2550 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2551 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2552 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2553 } 2554 break; 2555 case HCI_OPCODE_HCI_READ_RSSI: 2556 if (packet[5] == ERROR_CODE_SUCCESS){ 2557 uint8_t event[5]; 2558 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2559 event[1] = 3; 2560 (void)memcpy(&event[2], &packet[6], 3); 2561 hci_emit_event(event, sizeof(event), 1); 2562 } 2563 break; 2564 #ifdef ENABLE_BLE 2565 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2566 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2567 hci_stack->le_iso_packets_total_num = packet[11]; 2568 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2569 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2570 2571 /* fall through */ 2572 2573 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2574 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2575 hci_stack->le_acl_packets_total_num = packet[8]; 2576 // determine usable ACL payload size 2577 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2578 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2579 } 2580 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); 2581 break; 2582 #endif 2583 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2584 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2585 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2586 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2587 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); 2588 break; 2589 #endif 2590 #ifdef ENABLE_LE_CENTRAL 2591 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2592 hci_stack->le_whitelist_capacity = packet[6]; 2593 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2594 break; 2595 #endif 2596 #ifdef ENABLE_LE_PERIPHERAL 2597 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2598 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2599 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2600 break; 2601 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2602 if (hci_stack->le_advertising_set_in_current_command != 0) { 2603 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2604 hci_stack->le_advertising_set_in_current_command = 0; 2605 if (advertising_set == NULL) break; 2606 uint8_t adv_status = packet[6]; 2607 uint8_t tx_power = packet[7]; 2608 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 }; 2609 if (adv_status == 0){ 2610 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2611 } 2612 hci_emit_event(event, sizeof(event), 1); 2613 } 2614 break; 2615 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2616 if (hci_stack->le_advertising_set_in_current_command != 0) { 2617 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2618 hci_stack->le_advertising_set_in_current_command = 0; 2619 if (advertising_set == NULL) break; 2620 uint8_t adv_status = packet[5]; 2621 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2622 if (adv_status == 0){ 2623 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2624 } 2625 hci_emit_event(event, sizeof(event), 1); 2626 } 2627 break; 2628 #endif 2629 #endif 2630 case HCI_OPCODE_HCI_READ_BD_ADDR: 2631 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2632 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)); 2633 #ifdef ENABLE_CLASSIC 2634 if (hci_stack->link_key_db){ 2635 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2636 } 2637 #endif 2638 break; 2639 #ifdef ENABLE_CLASSIC 2640 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2641 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2642 break; 2643 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2644 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2645 if (status == ERROR_CODE_SUCCESS) { 2646 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2647 } else { 2648 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2649 } 2650 break; 2651 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2652 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2653 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2654 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2655 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2656 hci_emit_event(event, sizeof(event), 1); 2657 } 2658 break; 2659 #endif 2660 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2661 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2662 2663 #ifdef ENABLE_CLASSIC 2664 // determine usable ACL packet types based on host buffer size and supported features 2665 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2666 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2667 #endif 2668 // Classic/LE 2669 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2670 break; 2671 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2672 manufacturer = little_endian_read_16(packet, 10); 2673 // map Cypress to Broadcom 2674 if (manufacturer == BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR){ 2675 log_info("Treat Cypress as Broadcom"); 2676 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2677 little_endian_store_16(packet, 10, manufacturer); 2678 } 2679 hci_stack->manufacturer = manufacturer; 2680 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2681 break; 2682 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2683 hci_store_local_supported_commands(packet); 2684 break; 2685 #ifdef ENABLE_CLASSIC 2686 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2687 if (packet[5]) return; 2688 hci_stack->synchronous_flow_control_enabled = 1; 2689 break; 2690 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2691 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2692 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2693 conn = hci_connection_for_handle(handle); 2694 if (conn != NULL) { 2695 uint8_t key_size = 0; 2696 if (status == 0){ 2697 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2698 log_info("Handle %04x key Size: %u", handle, key_size); 2699 } else { 2700 key_size = 1; 2701 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2702 } 2703 hci_handle_read_encryption_key_size_complete(conn, key_size); 2704 } 2705 break; 2706 // assert pairing complete event is emitted. 2707 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2708 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2709 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2710 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2711 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2712 // lookup connection by gap pairing addr 2713 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2714 if (conn == NULL) break; 2715 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2716 break; 2717 2718 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2719 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2720 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2721 uint8_t event[67]; 2722 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2723 event[1] = 65; 2724 (void)memset(&event[2], 0, 65); 2725 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2726 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2727 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2728 event[2] = 3; 2729 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2730 } else { 2731 event[2] = 1; 2732 } 2733 } 2734 hci_emit_event(event, sizeof(event), 0); 2735 break; 2736 } 2737 2738 // note: only needed if user does not provide OOB data 2739 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2740 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2741 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2742 if (conn == NULL) break; 2743 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2744 break; 2745 #endif 2746 #endif 2747 #ifdef ENABLE_BLE 2748 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2749 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2750 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2751 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2752 if (status != ERROR_CODE_SUCCESS){ 2753 hci_iso_stream_requested_finalize(0xff); 2754 } 2755 break; 2756 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2757 // lookup BIG by state 2758 btstack_linked_list_iterator_t it; 2759 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2760 while (btstack_linked_list_iterator_has_next(&it)) { 2761 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2762 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2763 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2764 if (status == ERROR_CODE_SUCCESS){ 2765 big->state_vars.next_bis++; 2766 if (big->state_vars.next_bis == big->num_bis){ 2767 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2768 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2769 } else { 2770 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2771 } 2772 } else { 2773 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2774 big->state_vars.status = status; 2775 } 2776 return; 2777 } 2778 } 2779 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2780 while (btstack_linked_list_iterator_has_next(&it)) { 2781 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2782 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2783 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2784 if (status == ERROR_CODE_SUCCESS){ 2785 big_sync->state_vars.next_bis++; 2786 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2787 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2788 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2789 } else { 2790 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2791 } 2792 } else { 2793 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2794 big_sync->state_vars.status = status; 2795 } 2796 return; 2797 } 2798 } 2799 break; 2800 } 2801 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 2802 // lookup BIG by state 2803 btstack_linked_list_iterator_t it; 2804 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2805 while (btstack_linked_list_iterator_has_next(&it)) { 2806 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2807 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED){ 2808 btstack_linked_list_iterator_remove(&it); 2809 switch (big_sync->state){ 2810 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 2811 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 2812 break; 2813 default: 2814 hci_emit_big_sync_stopped(big_sync); 2815 break; 2816 } 2817 return; 2818 } 2819 } 2820 break; 2821 } 2822 #endif 2823 #endif 2824 default: 2825 break; 2826 } 2827 } 2828 2829 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 2830 UNUSED(size); 2831 2832 // get num cmd packets - limit to 1 to reduce complexity 2833 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 2834 2835 // get opcode and command status 2836 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 2837 2838 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 2839 uint8_t status = hci_event_command_status_get_status(packet); 2840 #endif 2841 2842 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 2843 bd_addr_type_t addr_type; 2844 #endif 2845 2846 switch (opcode){ 2847 #ifdef ENABLE_CLASSIC 2848 case HCI_OPCODE_HCI_CREATE_CONNECTION: 2849 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 2850 #endif 2851 #ifdef ENABLE_LE_CENTRAL 2852 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 2853 #endif 2854 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 2855 addr_type = hci_stack->outgoing_addr_type; 2856 2857 // reset outgoing address info 2858 memset(hci_stack->outgoing_addr, 0, 6); 2859 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 2860 2861 // on error 2862 if (status != ERROR_CODE_SUCCESS){ 2863 #ifdef ENABLE_LE_CENTRAL 2864 if (hci_is_le_connection_type(addr_type)){ 2865 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2866 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2867 } 2868 #endif 2869 // error => outgoing connection failed 2870 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(hci_stack->outgoing_addr, addr_type); 2871 if (conn != NULL){ 2872 hci_handle_connection_failed(conn, status); 2873 } 2874 } 2875 break; 2876 #endif 2877 #ifdef ENABLE_CLASSIC 2878 case HCI_OPCODE_HCI_INQUIRY: 2879 if (status == ERROR_CODE_SUCCESS) { 2880 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 2881 } else { 2882 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2883 } 2884 break; 2885 #endif 2886 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2887 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2888 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2889 if (status == ERROR_CODE_SUCCESS){ 2890 hci_iso_stream_requested_confirm(0xff); 2891 } else { 2892 hci_iso_stream_requested_finalize(0xff); 2893 } 2894 break; 2895 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 2896 default: 2897 break; 2898 } 2899 } 2900 2901 #ifdef ENABLE_BLE 2902 static void event_handle_le_connection_complete(const uint8_t * packet){ 2903 bd_addr_t addr; 2904 bd_addr_type_t addr_type; 2905 hci_connection_t * conn; 2906 2907 // Connection management 2908 reverse_bd_addr(&packet[8], addr); 2909 addr_type = (bd_addr_type_t)packet[7]; 2910 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 2911 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 2912 2913 #ifdef ENABLE_LE_CENTRAL 2914 // handle error: error is reported only to the initiator -> outgoing connection 2915 if (packet[3]){ 2916 2917 // handle cancelled outgoing connection 2918 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 2919 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 2920 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 2921 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 2922 // reset state 2923 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2924 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2925 // get outgoing connection conn struct for direct connect 2926 conn = gap_get_outgoing_connection(); 2927 } 2928 2929 // outgoing le connection establishment is done 2930 if (conn){ 2931 // remove entry 2932 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2933 btstack_memory_hci_connection_free( conn ); 2934 } 2935 return; 2936 } 2937 #endif 2938 2939 // on success, both hosts receive connection complete event 2940 if (packet[6] == HCI_ROLE_MASTER){ 2941 #ifdef ENABLE_LE_CENTRAL 2942 // if we're master on an le connection, it was an outgoing connection and we're done with it 2943 // note: no hci_connection_t object exists yet for connect with whitelist 2944 if (hci_is_le_connection_type(addr_type)){ 2945 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2946 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2947 } 2948 #endif 2949 } else { 2950 #ifdef ENABLE_LE_PERIPHERAL 2951 // if we're slave, it was an incoming connection, advertisements have stopped 2952 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 2953 #endif 2954 } 2955 2956 // LE connections are auto-accepted, so just create a connection if there isn't one already 2957 if (!conn){ 2958 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 2959 } 2960 2961 // no memory, sorry. 2962 if (!conn){ 2963 return; 2964 } 2965 2966 conn->state = OPEN; 2967 conn->role = packet[6]; 2968 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 2969 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 2970 2971 #ifdef ENABLE_LE_PERIPHERAL 2972 if (packet[6] == HCI_ROLE_SLAVE){ 2973 hci_update_advertisements_enabled_for_current_roles(); 2974 } 2975 #endif 2976 2977 // init unenhanced att bearer mtu 2978 conn->att_connection.mtu = ATT_DEFAULT_MTU; 2979 conn->att_connection.mtu_exchanged = false; 2980 2981 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 2982 2983 // restart timer 2984 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 2985 // btstack_run_loop_add_timer(&conn->timeout); 2986 2987 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 2988 2989 hci_emit_nr_connections_changed(); 2990 } 2991 #endif 2992 2993 #ifdef ENABLE_CLASSIC 2994 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){ 2995 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 2996 // LEVEL_4 is tested by l2cap 2997 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 2998 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 2999 if (level >= LEVEL_3){ 3000 // MITM not possible without keyboard or display 3001 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3002 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3003 3004 // MITM possible if one side has keyboard and the other has keyboard or display 3005 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3006 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3007 3008 // MITM not possible if one side has only display and other side has no keyboard 3009 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3010 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3011 } 3012 // LEVEL 2 requires SSP, which is a given 3013 return true; 3014 } 3015 3016 static bool btstack_is_null(uint8_t * data, uint16_t size){ 3017 uint16_t i; 3018 for (i=0; i < size ; i++){ 3019 if (data[i] != 0) { 3020 return false; 3021 } 3022 } 3023 return true; 3024 } 3025 3026 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3027 // get requested security level 3028 gap_security_level_t requested_security_level = conn->requested_security_level; 3029 if (hci_stack->gap_secure_connections_only_mode){ 3030 requested_security_level = LEVEL_4; 3031 } 3032 3033 // assess security: LEVEL 4 requires SC 3034 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3035 if ((requested_security_level == LEVEL_4) && 3036 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3037 !hci_remote_sc_enabled(conn)){ 3038 log_info("Level 4 required, but SC not supported -> abort"); 3039 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3040 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3041 return; 3042 } 3043 3044 // assess security based on io capabilities 3045 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3046 // responder: fully validate io caps of both sides as well as OOB data 3047 bool security_possible = false; 3048 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3049 3050 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3051 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3052 // so we merge the OOB data availability 3053 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3054 if (conn->classic_oob_c_192 != NULL){ 3055 have_oob_data |= 1; 3056 } 3057 if (conn->classic_oob_c_256 != NULL){ 3058 have_oob_data |= 2; 3059 } 3060 // for up to Level 3, either P-192 as well as P-256 will do 3061 // 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 3062 // if remote does not SC, we should not receive P-256 data either 3063 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3064 security_possible = true; 3065 } 3066 // for Level 4, P-256 is needed 3067 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3068 security_possible = true; 3069 } 3070 #endif 3071 3072 if (security_possible == false){ 3073 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3074 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3075 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3076 return; 3077 } 3078 } else { 3079 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3080 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3081 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3082 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3083 log_info("Level 3+ required, but no input/output -> abort"); 3084 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3085 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3086 return; 3087 } 3088 #endif 3089 #endif 3090 } 3091 3092 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3093 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3094 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3095 } else { 3096 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3097 } 3098 #endif 3099 } 3100 3101 #endif 3102 3103 static void event_handler(uint8_t *packet, uint16_t size){ 3104 3105 uint16_t event_length = packet[1]; 3106 3107 // assert packet is complete 3108 if (size != (event_length + 2u)){ 3109 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3110 return; 3111 } 3112 3113 hci_con_handle_t handle; 3114 hci_connection_t * conn; 3115 int i; 3116 3117 #ifdef ENABLE_CLASSIC 3118 hci_link_type_t link_type; 3119 bd_addr_t addr; 3120 bd_addr_type_t addr_type; 3121 #endif 3122 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3123 hci_iso_stream_t * iso_stream; 3124 le_audio_big_t * big; 3125 le_audio_big_sync_t * big_sync; 3126 #endif 3127 3128 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3129 3130 switch (hci_event_packet_get_type(packet)) { 3131 3132 case HCI_EVENT_COMMAND_COMPLETE: 3133 handle_command_complete_event(packet, size); 3134 break; 3135 3136 case HCI_EVENT_COMMAND_STATUS: 3137 handle_command_status_event(packet, size); 3138 break; 3139 3140 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3141 if (size < 3) return; 3142 uint16_t num_handles = packet[2]; 3143 if (size != (3u + num_handles * 4u)) return; 3144 uint16_t offset = 3; 3145 for (i=0; i<num_handles;i++){ 3146 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3147 offset += 2u; 3148 uint16_t num_packets = little_endian_read_16(packet, offset); 3149 offset += 2u; 3150 3151 conn = hci_connection_for_handle(handle); 3152 if (conn != NULL) { 3153 3154 if (conn->num_packets_sent >= num_packets) { 3155 conn->num_packets_sent -= num_packets; 3156 } else { 3157 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3158 conn->num_packets_sent = 0; 3159 } 3160 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3161 } 3162 3163 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3164 if (conn == NULL){ 3165 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3166 if (iso_stream != NULL){ 3167 if (iso_stream->num_packets_sent >= num_packets) { 3168 iso_stream->num_packets_sent -= num_packets; 3169 } else { 3170 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3171 iso_stream->num_packets_sent = 0; 3172 } 3173 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3174 num_packets, handle, iso_stream->num_packets_sent); 3175 } 3176 hci_iso_notify_can_send_now(); 3177 } 3178 #endif 3179 3180 #ifdef ENABLE_CLASSIC 3181 // For SCO, we do the can_send_now_check here 3182 hci_notify_if_sco_can_send_now(); 3183 #endif 3184 } 3185 break; 3186 } 3187 3188 #ifdef ENABLE_CLASSIC 3189 case HCI_EVENT_FLUSH_OCCURRED: 3190 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3191 handle = hci_event_flush_occurred_get_handle(packet); 3192 conn = hci_connection_for_handle(handle); 3193 if (conn) { 3194 log_info("Flush occurred, disconnect 0x%04x", handle); 3195 conn->state = SEND_DISCONNECT; 3196 } 3197 break; 3198 3199 case HCI_EVENT_INQUIRY_COMPLETE: 3200 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3201 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3202 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3203 hci_emit_event(event, sizeof(event), 1); 3204 } 3205 break; 3206 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3207 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3208 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3209 } 3210 break; 3211 case HCI_EVENT_CONNECTION_REQUEST: 3212 reverse_bd_addr(&packet[2], addr); 3213 link_type = (hci_link_type_t) packet[11]; 3214 3215 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3216 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3217 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3218 bd_addr_copy(hci_stack->decline_addr, addr); 3219 break; 3220 } 3221 3222 if (hci_stack->gap_classic_accept_callback != NULL){ 3223 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3224 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3225 bd_addr_copy(hci_stack->decline_addr, addr); 3226 break; 3227 } 3228 } 3229 3230 // TODO: eval COD 8-10 3231 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3232 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3233 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3234 if (!conn) { 3235 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3236 } 3237 if (!conn) { 3238 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3239 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3240 bd_addr_copy(hci_stack->decline_addr, addr); 3241 hci_run(); 3242 // avoid event to higher layer 3243 return; 3244 } 3245 conn->role = HCI_ROLE_SLAVE; 3246 conn->state = RECEIVED_CONNECTION_REQUEST; 3247 // store info about eSCO 3248 if (link_type == HCI_LINK_TYPE_ESCO){ 3249 conn->remote_supported_features[0] |= 1; 3250 } 3251 hci_run(); 3252 break; 3253 3254 case HCI_EVENT_CONNECTION_COMPLETE: 3255 // Connection management 3256 reverse_bd_addr(&packet[5], addr); 3257 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3258 addr_type = BD_ADDR_TYPE_ACL; 3259 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3260 if (conn) { 3261 if (!packet[2]){ 3262 conn->state = OPEN; 3263 conn->con_handle = little_endian_read_16(packet, 3); 3264 3265 // trigger write supervision timeout if we're master 3266 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3267 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3268 } 3269 3270 // trigger write automatic flush timeout 3271 if (hci_stack->automatic_flush_timeout != 0){ 3272 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3273 } 3274 3275 // restart timer 3276 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3277 btstack_run_loop_add_timer(&conn->timeout); 3278 3279 // trigger remote features for dedicated bonding 3280 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3281 hci_trigger_remote_features_for_connection(conn); 3282 } 3283 3284 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3285 3286 hci_emit_nr_connections_changed(); 3287 } else { 3288 // connection failed 3289 hci_handle_connection_failed(conn, packet[2]); 3290 } 3291 } 3292 break; 3293 3294 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3295 reverse_bd_addr(&packet[5], addr); 3296 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3297 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3298 if (packet[2]){ 3299 // connection failed 3300 if (conn){ 3301 hci_handle_connection_failed(conn, packet[2]); 3302 } 3303 break; 3304 } 3305 if (!conn) { 3306 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3307 } 3308 if (!conn) { 3309 break; 3310 } 3311 conn->state = OPEN; 3312 conn->con_handle = little_endian_read_16(packet, 3); 3313 3314 #ifdef ENABLE_SCO_OVER_HCI 3315 // update SCO 3316 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3317 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3318 } 3319 // trigger can send now 3320 if (hci_have_usb_transport()){ 3321 hci_stack->sco_can_send_now = true; 3322 } 3323 #endif 3324 #ifdef HAVE_SCO_TRANSPORT 3325 // configure sco transport 3326 if (hci_stack->sco_transport != NULL){ 3327 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3328 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3329 } 3330 #endif 3331 break; 3332 3333 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3334 handle = little_endian_read_16(packet, 3); 3335 conn = hci_connection_for_handle(handle); 3336 if (!conn) break; 3337 if (!packet[2]){ 3338 const uint8_t * features = &packet[5]; 3339 hci_handle_remote_features_page_0(conn, features); 3340 3341 // read extended features if possible 3342 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3343 && ((conn->remote_supported_features[0] & 2) != 0)) { 3344 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3345 break; 3346 } 3347 } 3348 hci_handle_remote_features_received(conn); 3349 break; 3350 3351 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3352 handle = little_endian_read_16(packet, 3); 3353 conn = hci_connection_for_handle(handle); 3354 if (!conn) break; 3355 // status = ok, page = 1 3356 if (!packet[2]) { 3357 uint8_t page_number = packet[5]; 3358 uint8_t maximum_page_number = packet[6]; 3359 const uint8_t * features = &packet[7]; 3360 bool done = false; 3361 switch (page_number){ 3362 case 1: 3363 hci_handle_remote_features_page_1(conn, features); 3364 if (maximum_page_number >= 2){ 3365 // get Secure Connections (Controller) from Page 2 if available 3366 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3367 } else { 3368 // otherwise, assume SC (Controller) == SC (Host) 3369 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3370 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3371 } 3372 done = true; 3373 } 3374 break; 3375 case 2: 3376 hci_handle_remote_features_page_2(conn, features); 3377 done = true; 3378 break; 3379 default: 3380 break; 3381 } 3382 if (!done) break; 3383 } 3384 hci_handle_remote_features_received(conn); 3385 break; 3386 3387 case HCI_EVENT_LINK_KEY_REQUEST: 3388 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3389 hci_event_link_key_request_get_bd_addr(packet, addr); 3390 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3391 if (!conn) break; 3392 3393 // lookup link key in db if not cached 3394 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3395 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3396 } 3397 3398 // response sent by hci_run() 3399 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3400 #endif 3401 break; 3402 3403 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3404 hci_event_link_key_request_get_bd_addr(packet, addr); 3405 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3406 if (!conn) break; 3407 3408 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3409 3410 // CVE-2020-26555: ignore NULL link key 3411 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3412 if (btstack_is_null(&packet[8], 16)) break; 3413 3414 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3415 // Change Connection Encryption keeps link key type 3416 if (link_key_type != CHANGED_COMBINATION_KEY){ 3417 conn->link_key_type = link_key_type; 3418 } 3419 3420 // cache link key. link keys stored in little-endian format for legacy reasons 3421 memcpy(&conn->link_key, &packet[8], 16); 3422 3423 // only store link key: 3424 // - if bondable enabled 3425 if (hci_stack->bondable == false) break; 3426 // - if security level sufficient 3427 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3428 // - for SSP, also check if remote side requested bonding as well 3429 if (conn->link_key_type != COMBINATION_KEY){ 3430 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3431 if (!remote_bonding){ 3432 break; 3433 } 3434 } 3435 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3436 break; 3437 } 3438 3439 case HCI_EVENT_PIN_CODE_REQUEST: 3440 hci_event_pin_code_request_get_bd_addr(packet, addr); 3441 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3442 if (!conn) break; 3443 3444 hci_pairing_started(conn, false); 3445 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3446 if (!hci_stack->bondable ){ 3447 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3448 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3449 hci_run(); 3450 return; 3451 } 3452 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3453 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3454 log_info("Level 4 required, but SC not supported -> abort"); 3455 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3456 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3457 hci_run(); 3458 return; 3459 } 3460 break; 3461 3462 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3463 hci_event_io_capability_response_get_bd_addr(packet, addr); 3464 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3465 if (!conn) break; 3466 3467 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3468 hci_pairing_started(conn, true); 3469 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3470 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3471 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3472 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3473 #endif 3474 break; 3475 3476 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3477 hci_event_io_capability_response_get_bd_addr(packet, addr); 3478 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3479 if (!conn) break; 3480 3481 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3482 hci_connection_timestamp(conn); 3483 hci_pairing_started(conn, true); 3484 break; 3485 3486 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3487 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3488 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3489 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3490 if (!conn) break; 3491 3492 hci_connection_timestamp(conn); 3493 3494 hci_pairing_started(conn, true); 3495 3496 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3497 break; 3498 #endif 3499 3500 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3501 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3502 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3503 if (!conn) break; 3504 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3505 if (hci_stack->ssp_auto_accept){ 3506 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3507 }; 3508 } else { 3509 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3510 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3511 // don't forward event to app 3512 hci_run(); 3513 return; 3514 } 3515 break; 3516 3517 case HCI_EVENT_USER_PASSKEY_REQUEST: 3518 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3519 if (hci_stack->ssp_auto_accept){ 3520 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3521 }; 3522 break; 3523 3524 case HCI_EVENT_MODE_CHANGE: 3525 handle = hci_event_mode_change_get_handle(packet); 3526 conn = hci_connection_for_handle(handle); 3527 if (!conn) break; 3528 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3529 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3530 break; 3531 #endif 3532 3533 case HCI_EVENT_ENCRYPTION_CHANGE: 3534 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3535 handle = hci_event_encryption_change_get_connection_handle(packet); 3536 conn = hci_connection_for_handle(handle); 3537 if (!conn) break; 3538 if (hci_event_encryption_change_get_status(packet) == 0u) { 3539 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3540 if (encryption_enabled){ 3541 if (hci_is_le_connection(conn)){ 3542 // For LE, we accept connection as encrypted 3543 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3544 } 3545 #ifdef ENABLE_CLASSIC 3546 else { 3547 3548 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3549 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3550 bool connected_uses_aes_ccm = encryption_enabled == 2; 3551 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3552 log_info("SC during pairing, but only E0 now -> abort"); 3553 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3554 break; 3555 } 3556 3557 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3558 if (connected_uses_aes_ccm){ 3559 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3560 } 3561 3562 #ifdef ENABLE_TESTING_SUPPORT 3563 // work around for issue with PTS dongle 3564 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3565 #endif 3566 // validate encryption key size 3567 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3568 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3569 // already got encryption key size 3570 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3571 } else { 3572 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3573 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3574 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3575 } else { 3576 // if not, pretend everything is perfect 3577 hci_handle_read_encryption_key_size_complete(conn, 16); 3578 } 3579 } 3580 } 3581 #endif 3582 } else { 3583 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3584 } 3585 } else { 3586 uint8_t status = hci_event_encryption_change_get_status(packet); 3587 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3588 conn->bonding_flags &= ~BONDING_DEDICATED; 3589 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3590 conn->bonding_status = status; 3591 } 3592 } 3593 3594 break; 3595 3596 #ifdef ENABLE_CLASSIC 3597 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3598 handle = hci_event_authentication_complete_get_connection_handle(packet); 3599 conn = hci_connection_for_handle(handle); 3600 if (!conn) break; 3601 3602 // clear authentication active flag 3603 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3604 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3605 3606 // authenticated only if auth status == 0 3607 if (hci_event_authentication_complete_get_status(packet) == 0){ 3608 // authenticated 3609 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3610 3611 // If not already encrypted, start encryption 3612 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3613 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3614 break; 3615 } 3616 } 3617 3618 // emit updated security level 3619 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3620 break; 3621 3622 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3623 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3624 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3625 if (!conn) break; 3626 3627 // treat successfully paired connection as authenticated 3628 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3629 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3630 } 3631 3632 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3633 break; 3634 #endif 3635 3636 // HCI_EVENT_DISCONNECTION_COMPLETE 3637 // has been split, to first notify stack before shutting connection down 3638 // see end of function, too. 3639 case HCI_EVENT_DISCONNECTION_COMPLETE: 3640 if (packet[2]) break; // status != 0 3641 handle = little_endian_read_16(packet, 3); 3642 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3643 if (hci_stack->acl_fragmentation_total_size > 0u) { 3644 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3645 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3646 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3647 hci_stack->acl_fragmentation_total_size = 0; 3648 hci_stack->acl_fragmentation_pos = 0; 3649 if (release_buffer){ 3650 hci_release_packet_buffer(); 3651 } 3652 } 3653 } 3654 3655 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3656 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3657 if (hci_stack->iso_fragmentation_total_size > 0u) { 3658 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3659 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3660 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3661 hci_stack->iso_fragmentation_total_size = 0; 3662 hci_stack->iso_fragmentation_pos = 0; 3663 if (release_buffer){ 3664 hci_release_packet_buffer(); 3665 } 3666 } 3667 } 3668 3669 // finalize iso stream if handle matches 3670 iso_stream = hci_iso_stream_for_con_handle(handle); 3671 if (iso_stream != NULL){ 3672 hci_iso_stream_finalize(iso_stream); 3673 break; 3674 } 3675 #endif 3676 3677 conn = hci_connection_for_handle(handle); 3678 if (!conn) break; 3679 #ifdef ENABLE_CLASSIC 3680 // pairing failed if it was ongoing 3681 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3682 #endif 3683 3684 // emit dedicatd bonding event 3685 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3686 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3687 } 3688 3689 // mark connection for shutdown, stop timers, reset state 3690 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3691 hci_connection_stop_timer(conn); 3692 hci_connection_init(conn); 3693 3694 #ifdef ENABLE_BLE 3695 #ifdef ENABLE_LE_PERIPHERAL 3696 // re-enable advertisements for le connections if active 3697 if (hci_is_le_connection(conn)){ 3698 hci_update_advertisements_enabled_for_current_roles(); 3699 } 3700 #endif 3701 #endif 3702 break; 3703 3704 case HCI_EVENT_HARDWARE_ERROR: 3705 log_error("Hardware Error: 0x%02x", packet[2]); 3706 if (hci_stack->hardware_error_callback){ 3707 (*hci_stack->hardware_error_callback)(packet[2]); 3708 } else { 3709 // if no special requests, just reboot stack 3710 hci_power_control_off(); 3711 hci_power_control_on(); 3712 } 3713 break; 3714 3715 #ifdef ENABLE_CLASSIC 3716 case HCI_EVENT_ROLE_CHANGE: 3717 if (packet[2]) break; // status != 0 3718 reverse_bd_addr(&packet[3], addr); 3719 addr_type = BD_ADDR_TYPE_ACL; 3720 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3721 if (!conn) break; 3722 conn->role = packet[9]; 3723 break; 3724 #endif 3725 3726 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3727 // release packet buffer only for asynchronous transport and if there are not further fragments 3728 if (hci_transport_synchronous()) { 3729 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3730 return; // instead of break: to avoid re-entering hci_run() 3731 } 3732 hci_stack->acl_fragmentation_tx_active = 0; 3733 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3734 hci_stack->iso_fragmentation_tx_active = 0; 3735 if (hci_stack->iso_fragmentation_total_size) break; 3736 #endif 3737 if (hci_stack->acl_fragmentation_total_size) break; 3738 hci_release_packet_buffer(); 3739 3740 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3741 hci_iso_notify_can_send_now(); 3742 #endif 3743 // L2CAP receives this event via the hci_emit_event below 3744 3745 #ifdef ENABLE_CLASSIC 3746 // For SCO, we do the can_send_now_check here 3747 hci_notify_if_sco_can_send_now(); 3748 #endif 3749 break; 3750 3751 #ifdef ENABLE_CLASSIC 3752 case HCI_EVENT_SCO_CAN_SEND_NOW: 3753 // For SCO, we do the can_send_now_check here 3754 hci_stack->sco_can_send_now = true; 3755 hci_notify_if_sco_can_send_now(); 3756 return; 3757 3758 // explode inquriy results for easier consumption 3759 case HCI_EVENT_INQUIRY_RESULT: 3760 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 3761 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 3762 gap_inquiry_explode(packet, size); 3763 break; 3764 #endif 3765 3766 #ifdef ENABLE_BLE 3767 case HCI_EVENT_LE_META: 3768 switch (packet[2]){ 3769 #ifdef ENABLE_LE_CENTRAL 3770 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 3771 if (!hci_stack->le_scanning_enabled) break; 3772 le_handle_advertisement_report(packet, size); 3773 break; 3774 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3775 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 3776 if (!hci_stack->le_scanning_enabled) break; 3777 le_handle_extended_advertisement_report(packet, size); 3778 break; 3779 #endif 3780 #endif 3781 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3782 event_handle_le_connection_complete(packet); 3783 break; 3784 3785 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 3786 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 3787 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 3788 conn = hci_connection_for_handle(handle); 3789 if (!conn) break; 3790 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 3791 break; 3792 3793 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 3794 // connection 3795 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 3796 conn = hci_connection_for_handle(handle); 3797 if (conn) { 3798 // read arguments 3799 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 3800 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 3801 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 3802 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 3803 3804 // validate against current connection parameter range 3805 le_connection_parameter_range_t existing_range; 3806 gap_get_connection_parameter_range(&existing_range); 3807 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 3808 if (update_parameter){ 3809 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 3810 conn->le_conn_interval_min = le_conn_interval_min; 3811 conn->le_conn_interval_max = le_conn_interval_max; 3812 conn->le_conn_latency = le_conn_latency; 3813 conn->le_supervision_timeout = le_supervision_timeout; 3814 } else { 3815 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 3816 } 3817 } 3818 break; 3819 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 3820 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 3821 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 3822 conn = hci_connection_for_handle(handle); 3823 if (conn) { 3824 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 3825 } 3826 break; 3827 #endif 3828 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3829 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 3830 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 3831 iso_stream = hci_iso_stream_for_con_handle(handle); 3832 if (iso_stream){ 3833 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 3834 if (status == ERROR_CODE_SUCCESS){ 3835 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 3836 } else { 3837 hci_iso_stream_finalize(iso_stream); 3838 } 3839 } 3840 break; 3841 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 3842 big = hci_big_for_handle(packet[4]); 3843 if (big != NULL){ 3844 uint8_t status = packet[3]; 3845 if (status == ERROR_CODE_SUCCESS){ 3846 // store bis_con_handles and trigger iso path setup 3847 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 3848 uint8_t i; 3849 for (i=0;i<num_bis;i++){ 3850 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 3851 big->bis_con_handles[i] = bis_handle; 3852 // assign bis handle 3853 btstack_linked_list_iterator_t it; 3854 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3855 while (btstack_linked_list_iterator_has_next(&it)){ 3856 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3857 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 3858 (iso_stream->big_handle == big->big_handle)){ 3859 iso_stream->con_handle = bis_handle; 3860 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 3861 } 3862 } 3863 } 3864 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3865 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3866 big->state_vars.next_bis = 0; 3867 } 3868 } else { 3869 // create BIG failed or has been stopped by us 3870 hci_iso_stream_requested_finalize(big->big_handle); 3871 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 3872 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 3873 hci_emit_big_created(big, status); 3874 } else { 3875 hci_emit_big_terminated(big); 3876 } 3877 } 3878 } 3879 break; 3880 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 3881 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 3882 if (big != NULL){ 3883 // finalize associated ISO streams 3884 btstack_linked_list_iterator_t it; 3885 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3886 while (btstack_linked_list_iterator_has_next(&it)){ 3887 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3888 if (iso_stream->big_handle == big->big_handle){ 3889 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->big_handle, iso_stream->con_handle); 3890 btstack_linked_list_iterator_remove(&it); 3891 btstack_memory_hci_iso_stream_free(iso_stream); 3892 } 3893 } 3894 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 3895 switch (big->state){ 3896 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3897 hci_emit_big_created(big, big->state_vars.status); 3898 break; 3899 default: 3900 hci_emit_big_terminated(big); 3901 break; 3902 } 3903 } 3904 break; 3905 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 3906 big_sync = hci_big_sync_for_handle(packet[4]); 3907 if (big_sync != NULL){ 3908 uint8_t status = packet[3]; 3909 if (status == ERROR_CODE_SUCCESS){ 3910 // store bis_con_handles and trigger iso path setup 3911 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 3912 uint8_t i; 3913 for (i=0;i<num_bis;i++){ 3914 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 3915 } 3916 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3917 // trigger iso path setup 3918 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3919 big_sync->state_vars.next_bis = 0; 3920 } 3921 } else { 3922 // create BIG Sync failed or has been stopped by us 3923 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 3924 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3925 hci_emit_big_sync_created(big_sync, status); 3926 } else { 3927 hci_emit_big_sync_stopped(big_sync); 3928 } 3929 } 3930 } 3931 break; 3932 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 3933 big_sync = hci_big_sync_for_handle(packet[4]); 3934 if (big_sync != NULL){ 3935 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 3936 hci_emit_big_sync_stopped(big_sync); 3937 } 3938 break; 3939 #endif 3940 default: 3941 break; 3942 } 3943 break; 3944 #endif 3945 case HCI_EVENT_VENDOR_SPECIFIC: 3946 // Vendor specific commands often create vendor specific event instead of num completed packets 3947 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 3948 switch (hci_stack->manufacturer){ 3949 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 3950 hci_stack->num_cmd_packets = 1; 3951 break; 3952 default: 3953 break; 3954 } 3955 break; 3956 default: 3957 break; 3958 } 3959 3960 handle_event_for_current_stack_state(packet, size); 3961 3962 // notify upper stack 3963 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 3964 3965 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 3966 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 3967 handle = little_endian_read_16(packet, 3); 3968 hci_connection_t * aConn = hci_connection_for_handle(handle); 3969 // discard connection if app did not trigger a reconnect in the event handler 3970 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 3971 hci_shutdown_connection(aConn); 3972 } 3973 } 3974 3975 // execute main loop 3976 hci_run(); 3977 } 3978 3979 #ifdef ENABLE_CLASSIC 3980 3981 #ifdef ENABLE_SCO_OVER_HCI 3982 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 3983 static void sco_schedule_tx(hci_connection_t * conn); 3984 3985 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 3986 log_debug("SCO TX Timeout"); 3987 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 3988 hci_connection_t * conn = hci_connection_for_handle(con_handle); 3989 if (!conn) return; 3990 3991 // trigger send 3992 conn->sco_tx_ready = 1; 3993 // extra packet if CVSD but SCO buffer is too short 3994 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 3995 conn->sco_tx_ready++; 3996 } 3997 hci_notify_if_sco_can_send_now(); 3998 } 3999 4000 4001 #define SCO_TX_AFTER_RX_MS (6) 4002 4003 static void sco_schedule_tx(hci_connection_t * conn){ 4004 4005 uint32_t now = btstack_run_loop_get_time_ms(); 4006 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4007 int time_delta_ms = sco_tx_ms - now; 4008 4009 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4010 4011 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4012 btstack_run_loop_remove_timer(timer); 4013 btstack_run_loop_set_timer(timer, time_delta_ms); 4014 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4015 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4016 btstack_run_loop_add_timer(timer); 4017 } 4018 #endif 4019 4020 static void sco_handler(uint8_t * packet, uint16_t size){ 4021 // lookup connection struct 4022 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4023 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4024 if (!conn) return; 4025 4026 #ifdef ENABLE_SCO_OVER_HCI 4027 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4028 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4029 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4030 packet[2] = 0x3c; 4031 memmove(&packet[3], &packet[23], 63); 4032 size = 63; 4033 } 4034 } 4035 4036 if (hci_have_usb_transport()){ 4037 // Nothing to do 4038 } else { 4039 // 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); 4040 if (hci_stack->synchronous_flow_control_enabled == 0){ 4041 uint32_t now = btstack_run_loop_get_time_ms(); 4042 4043 if (!conn->sco_rx_valid){ 4044 // ignore first 10 packets 4045 conn->sco_rx_count++; 4046 // log_debug("sco rx count %u", conn->sco_rx_count); 4047 if (conn->sco_rx_count == 10) { 4048 // use first timestamp as is and pretent it just started 4049 conn->sco_rx_ms = now; 4050 conn->sco_rx_valid = 1; 4051 conn->sco_rx_count = 0; 4052 sco_schedule_tx(conn); 4053 } 4054 } else { 4055 // track expected arrival timme 4056 conn->sco_rx_count++; 4057 conn->sco_rx_ms += 7; 4058 int delta = (int32_t) (now - conn->sco_rx_ms); 4059 if (delta > 0){ 4060 conn->sco_rx_ms++; 4061 } 4062 // log_debug("sco rx %u", conn->sco_rx_ms); 4063 sco_schedule_tx(conn); 4064 } 4065 } 4066 } 4067 #endif 4068 4069 // deliver to app 4070 if (hci_stack->sco_packet_handler) { 4071 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4072 } 4073 4074 #ifdef HAVE_SCO_TRANSPORT 4075 // We can send one packet for each received packet 4076 conn->sco_tx_ready++; 4077 hci_notify_if_sco_can_send_now(); 4078 #endif 4079 4080 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4081 conn->num_packets_completed++; 4082 hci_stack->host_completed_packets = 1; 4083 hci_run(); 4084 #endif 4085 } 4086 #endif 4087 4088 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4089 hci_dump_packet(packet_type, 1, packet, size); 4090 switch (packet_type) { 4091 case HCI_EVENT_PACKET: 4092 event_handler(packet, size); 4093 break; 4094 case HCI_ACL_DATA_PACKET: 4095 acl_handler(packet, size); 4096 break; 4097 #ifdef ENABLE_CLASSIC 4098 case HCI_SCO_DATA_PACKET: 4099 sco_handler(packet, size); 4100 break; 4101 #endif 4102 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4103 case HCI_ISO_DATA_PACKET: 4104 hci_iso_packet_handler(packet, size); 4105 break; 4106 #endif 4107 default: 4108 break; 4109 } 4110 } 4111 4112 /** 4113 * @brief Add event packet handler. 4114 */ 4115 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4116 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4117 } 4118 4119 /** 4120 * @brief Remove event packet handler. 4121 */ 4122 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4123 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4124 } 4125 4126 /** Register HCI packet handlers */ 4127 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4128 hci_stack->acl_packet_handler = handler; 4129 } 4130 4131 #ifdef ENABLE_CLASSIC 4132 /** 4133 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4134 */ 4135 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4136 hci_stack->sco_packet_handler = handler; 4137 } 4138 #endif 4139 4140 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4141 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4142 hci_stack->iso_packet_handler = handler; 4143 } 4144 #endif 4145 4146 static void hci_state_reset(void){ 4147 // no connections yet 4148 hci_stack->connections = NULL; 4149 4150 // keep discoverable/connectable as this has been requested by the client(s) 4151 // hci_stack->discoverable = 0; 4152 // hci_stack->connectable = 0; 4153 // hci_stack->bondable = 1; 4154 // hci_stack->own_addr_type = 0; 4155 4156 // buffer is free 4157 hci_stack->hci_packet_buffer_reserved = false; 4158 4159 // no pending cmds 4160 hci_stack->decline_reason = 0; 4161 4162 hci_stack->secure_connections_active = false; 4163 4164 #ifdef ENABLE_CLASSIC 4165 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4166 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4167 4168 hci_stack->gap_tasks_classic = 4169 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4170 GAP_TASK_SET_CLASS_OF_DEVICE | 4171 GAP_TASK_SET_LOCAL_NAME | 4172 GAP_TASK_SET_EIR_DATA | 4173 GAP_TASK_WRITE_SCAN_ENABLE | 4174 GAP_TASK_WRITE_PAGE_TIMEOUT; 4175 #endif 4176 4177 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4178 hci_stack->classic_read_local_oob_data = false; 4179 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4180 #endif 4181 4182 // LE 4183 #ifdef ENABLE_BLE 4184 memset(hci_stack->le_random_address, 0, 6); 4185 hci_stack->le_random_address_set = 0; 4186 #endif 4187 #ifdef ENABLE_LE_CENTRAL 4188 hci_stack->le_scanning_active = false; 4189 hci_stack->le_scanning_param_update = true; 4190 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4191 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4192 hci_stack->le_whitelist_capacity = 0; 4193 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4194 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4195 #endif 4196 #endif 4197 #ifdef ENABLE_LE_PERIPHERAL 4198 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4199 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4200 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4201 } 4202 if (hci_stack->le_advertisements_data != NULL){ 4203 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4204 } 4205 #endif 4206 } 4207 4208 #ifdef ENABLE_CLASSIC 4209 /** 4210 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4211 */ 4212 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4213 // store and open remote device db 4214 hci_stack->link_key_db = link_key_db; 4215 if (hci_stack->link_key_db) { 4216 hci_stack->link_key_db->open(); 4217 } 4218 } 4219 #endif 4220 4221 void hci_init(const hci_transport_t *transport, const void *config){ 4222 4223 #ifdef HAVE_MALLOC 4224 if (!hci_stack) { 4225 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4226 } 4227 #else 4228 hci_stack = &hci_stack_static; 4229 #endif 4230 memset(hci_stack, 0, sizeof(hci_stack_t)); 4231 4232 // reference to use transport layer implementation 4233 hci_stack->hci_transport = transport; 4234 4235 // reference to used config 4236 hci_stack->config = config; 4237 4238 // setup pointer for outgoing packet buffer 4239 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4240 4241 // max acl payload size defined in config.h 4242 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4243 4244 // register packet handlers with transport 4245 transport->register_packet_handler(&packet_handler); 4246 4247 hci_stack->state = HCI_STATE_OFF; 4248 4249 // class of device 4250 hci_stack->class_of_device = 0x007a020c; // Smartphone 4251 4252 // bondable by default 4253 hci_stack->bondable = 1; 4254 4255 #ifdef ENABLE_CLASSIC 4256 // classic name 4257 hci_stack->local_name = default_classic_name; 4258 4259 // Master slave policy 4260 hci_stack->master_slave_policy = 1; 4261 4262 // Allow Role Switch 4263 hci_stack->allow_role_switch = 1; 4264 4265 // Default / minimum security level = 2 4266 hci_stack->gap_security_level = LEVEL_2; 4267 4268 // Default Security Mode 4 4269 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4270 4271 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4272 hci_stack->gap_required_encyrption_key_size = 7; 4273 4274 // Link Supervision Timeout 4275 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4276 4277 #endif 4278 4279 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4280 hci_stack->ssp_enable = 1; 4281 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4282 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4283 hci_stack->ssp_auto_accept = 1; 4284 4285 // Secure Connections: enable (requires support from Controller) 4286 hci_stack->secure_connections_enable = true; 4287 4288 // voice setting - signed 16 bit pcm data with CVSD over the air 4289 hci_stack->sco_voice_setting = 0x60; 4290 4291 #ifdef ENABLE_LE_CENTRAL 4292 // connection parameter to use for outgoing connections 4293 hci_stack->le_connection_scan_interval = 0x0060; // 60ms 4294 hci_stack->le_connection_scan_window = 0x0030; // 30ms 4295 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4296 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4297 hci_stack->le_connection_latency = 4; // 4 4298 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4299 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 4300 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 4301 4302 // default LE Scanning 4303 hci_stack->le_scan_type = 0x1; // active 4304 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4305 hci_stack->le_scan_window = 0x30; // 30 ms 4306 #endif 4307 4308 #ifdef ENABLE_LE_PERIPHERAL 4309 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4310 #endif 4311 4312 // connection parameter range used to answer connection parameter update requests in l2cap 4313 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4314 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4315 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4316 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4317 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4318 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4319 4320 hci_state_reset(); 4321 } 4322 4323 void hci_deinit(void){ 4324 btstack_run_loop_remove_timer(&hci_stack->timeout); 4325 #ifdef HAVE_MALLOC 4326 if (hci_stack) { 4327 free(hci_stack); 4328 } 4329 #endif 4330 hci_stack = NULL; 4331 4332 #ifdef ENABLE_CLASSIC 4333 disable_l2cap_timeouts = 0; 4334 #endif 4335 } 4336 4337 /** 4338 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4339 */ 4340 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4341 hci_stack->chipset = chipset_driver; 4342 4343 // reset chipset driver - init is also called on power_up 4344 if (hci_stack->chipset && hci_stack->chipset->init){ 4345 hci_stack->chipset->init(hci_stack->config); 4346 } 4347 } 4348 4349 /** 4350 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4351 */ 4352 void hci_set_control(const btstack_control_t *hardware_control){ 4353 // references to used control implementation 4354 hci_stack->control = hardware_control; 4355 // init with transport config 4356 hardware_control->init(hci_stack->config); 4357 } 4358 4359 static void hci_discard_connections(void){ 4360 btstack_linked_list_iterator_t it; 4361 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4362 while (btstack_linked_list_iterator_has_next(&it)){ 4363 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4364 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4365 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4366 hci_shutdown_connection(connection); 4367 } 4368 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4369 while (hci_stack->iso_streams != NULL){ 4370 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4371 } 4372 #endif 4373 } 4374 4375 void hci_close(void){ 4376 4377 #ifdef ENABLE_CLASSIC 4378 // close remote device db 4379 if (hci_stack->link_key_db) { 4380 hci_stack->link_key_db->close(); 4381 } 4382 #endif 4383 4384 hci_discard_connections(); 4385 4386 hci_power_control(HCI_POWER_OFF); 4387 4388 #ifdef HAVE_MALLOC 4389 free(hci_stack); 4390 #endif 4391 hci_stack = NULL; 4392 } 4393 4394 #ifdef HAVE_SCO_TRANSPORT 4395 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4396 hci_stack->sco_transport = sco_transport; 4397 sco_transport->register_packet_handler(&packet_handler); 4398 } 4399 #endif 4400 4401 #ifdef ENABLE_CLASSIC 4402 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4403 // validate ranage and set 4404 if (encryption_key_size < 7) return; 4405 if (encryption_key_size > 16) return; 4406 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4407 } 4408 4409 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4410 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4411 hci_stack->gap_security_mode = security_mode; 4412 return ERROR_CODE_SUCCESS; 4413 } else { 4414 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4415 } 4416 } 4417 4418 gap_security_mode_t gap_get_security_mode(void){ 4419 return hci_stack->gap_security_mode; 4420 } 4421 4422 void gap_set_security_level(gap_security_level_t security_level){ 4423 hci_stack->gap_security_level = security_level; 4424 } 4425 4426 gap_security_level_t gap_get_security_level(void){ 4427 if (hci_stack->gap_secure_connections_only_mode){ 4428 return LEVEL_4; 4429 } 4430 return hci_stack->gap_security_level; 4431 } 4432 4433 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4434 hci_stack->gap_minimal_service_security_level = security_level; 4435 } 4436 4437 void gap_set_secure_connections_only_mode(bool enable){ 4438 hci_stack->gap_secure_connections_only_mode = enable; 4439 } 4440 4441 bool gap_get_secure_connections_only_mode(void){ 4442 return hci_stack->gap_secure_connections_only_mode; 4443 } 4444 #endif 4445 4446 #ifdef ENABLE_CLASSIC 4447 void gap_set_class_of_device(uint32_t class_of_device){ 4448 hci_stack->class_of_device = class_of_device; 4449 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4450 hci_run(); 4451 } 4452 4453 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4454 hci_stack->default_link_policy_settings = default_link_policy_settings; 4455 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4456 hci_run(); 4457 } 4458 4459 void gap_set_allow_role_switch(bool allow_role_switch){ 4460 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4461 } 4462 4463 uint8_t hci_get_allow_role_switch(void){ 4464 return hci_stack->allow_role_switch; 4465 } 4466 4467 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4468 hci_stack->link_supervision_timeout = link_supervision_timeout; 4469 } 4470 4471 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4472 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4473 } 4474 4475 uint16_t hci_automatic_flush_timeout(void){ 4476 return hci_stack->automatic_flush_timeout; 4477 } 4478 4479 void hci_disable_l2cap_timeout_check(void){ 4480 disable_l2cap_timeouts = 1; 4481 } 4482 #endif 4483 4484 #ifndef HAVE_HOST_CONTROLLER_API 4485 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4486 void hci_set_bd_addr(bd_addr_t addr){ 4487 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4488 hci_stack->custom_bd_addr_set = 1; 4489 } 4490 #endif 4491 4492 // State-Module-Driver overview 4493 // state module low-level 4494 // HCI_STATE_OFF off close 4495 // HCI_STATE_INITIALIZING, on open 4496 // HCI_STATE_WORKING, on open 4497 // HCI_STATE_HALTING, on open 4498 // HCI_STATE_SLEEPING, off/sleep close 4499 // HCI_STATE_FALLING_ASLEEP on open 4500 4501 static int hci_power_control_on(void){ 4502 4503 // power on 4504 int err = 0; 4505 if (hci_stack->control && hci_stack->control->on){ 4506 err = (*hci_stack->control->on)(); 4507 } 4508 if (err){ 4509 log_error( "POWER_ON failed"); 4510 hci_emit_hci_open_failed(); 4511 return err; 4512 } 4513 4514 // int chipset driver 4515 if (hci_stack->chipset && hci_stack->chipset->init){ 4516 hci_stack->chipset->init(hci_stack->config); 4517 } 4518 4519 // init transport 4520 if (hci_stack->hci_transport->init){ 4521 hci_stack->hci_transport->init(hci_stack->config); 4522 } 4523 4524 // open transport 4525 err = hci_stack->hci_transport->open(); 4526 if (err){ 4527 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4528 if (hci_stack->control && hci_stack->control->off){ 4529 (*hci_stack->control->off)(); 4530 } 4531 hci_emit_hci_open_failed(); 4532 return err; 4533 } 4534 return 0; 4535 } 4536 4537 static void hci_power_control_off(void){ 4538 4539 log_info("hci_power_control_off"); 4540 4541 // close low-level device 4542 hci_stack->hci_transport->close(); 4543 4544 log_info("hci_power_control_off - hci_transport closed"); 4545 4546 // power off 4547 if (hci_stack->control && hci_stack->control->off){ 4548 (*hci_stack->control->off)(); 4549 } 4550 4551 log_info("hci_power_control_off - control closed"); 4552 4553 hci_stack->state = HCI_STATE_OFF; 4554 } 4555 4556 static void hci_power_control_sleep(void){ 4557 4558 log_info("hci_power_control_sleep"); 4559 4560 #if 0 4561 // don't close serial port during sleep 4562 4563 // close low-level device 4564 hci_stack->hci_transport->close(hci_stack->config); 4565 #endif 4566 4567 // sleep mode 4568 if (hci_stack->control && hci_stack->control->sleep){ 4569 (*hci_stack->control->sleep)(); 4570 } 4571 4572 hci_stack->state = HCI_STATE_SLEEPING; 4573 } 4574 4575 static int hci_power_control_wake(void){ 4576 4577 log_info("hci_power_control_wake"); 4578 4579 // wake on 4580 if (hci_stack->control && hci_stack->control->wake){ 4581 (*hci_stack->control->wake)(); 4582 } 4583 4584 #if 0 4585 // open low-level device 4586 int err = hci_stack->hci_transport->open(hci_stack->config); 4587 if (err){ 4588 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4589 if (hci_stack->control && hci_stack->control->off){ 4590 (*hci_stack->control->off)(); 4591 } 4592 hci_emit_hci_open_failed(); 4593 return err; 4594 } 4595 #endif 4596 4597 return 0; 4598 } 4599 4600 static void hci_power_enter_initializing_state(void){ 4601 // set up state machine 4602 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4603 hci_stack->hci_packet_buffer_reserved = false; 4604 hci_stack->state = HCI_STATE_INITIALIZING; 4605 hci_stack->substate = HCI_INIT_SEND_RESET; 4606 } 4607 4608 static void hci_power_enter_halting_state(void){ 4609 #ifdef ENABLE_BLE 4610 hci_whitelist_free(); 4611 #endif 4612 // see hci_run 4613 hci_stack->state = HCI_STATE_HALTING; 4614 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4615 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4616 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4617 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4618 btstack_run_loop_add_timer(&hci_stack->timeout); 4619 } 4620 4621 // returns error 4622 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4623 int err; 4624 switch (power_mode){ 4625 case HCI_POWER_ON: 4626 err = hci_power_control_on(); 4627 if (err != 0) { 4628 log_error("hci_power_control_on() error %d", err); 4629 return err; 4630 } 4631 hci_power_enter_initializing_state(); 4632 break; 4633 case HCI_POWER_OFF: 4634 // do nothing 4635 break; 4636 case HCI_POWER_SLEEP: 4637 // do nothing (with SLEEP == OFF) 4638 break; 4639 default: 4640 btstack_assert(false); 4641 break; 4642 } 4643 return ERROR_CODE_SUCCESS; 4644 } 4645 4646 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 4647 switch (power_mode){ 4648 case HCI_POWER_ON: 4649 // do nothing 4650 break; 4651 case HCI_POWER_OFF: 4652 // no connections yet, just turn it off 4653 hci_power_control_off(); 4654 break; 4655 case HCI_POWER_SLEEP: 4656 // no connections yet, just turn it off 4657 hci_power_control_sleep(); 4658 break; 4659 default: 4660 btstack_assert(false); 4661 break; 4662 } 4663 return ERROR_CODE_SUCCESS; 4664 } 4665 4666 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 4667 switch (power_mode){ 4668 case HCI_POWER_ON: 4669 // do nothing 4670 break; 4671 case HCI_POWER_OFF: 4672 hci_power_enter_halting_state(); 4673 break; 4674 case HCI_POWER_SLEEP: 4675 // see hci_run 4676 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4677 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4678 break; 4679 default: 4680 btstack_assert(false); 4681 break; 4682 } 4683 return ERROR_CODE_SUCCESS; 4684 } 4685 4686 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 4687 switch (power_mode){ 4688 case HCI_POWER_ON: 4689 hci_power_enter_initializing_state(); 4690 break; 4691 case HCI_POWER_OFF: 4692 // do nothing 4693 break; 4694 case HCI_POWER_SLEEP: 4695 // see hci_run 4696 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4697 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4698 break; 4699 default: 4700 btstack_assert(false); 4701 break; 4702 } 4703 return ERROR_CODE_SUCCESS; 4704 } 4705 4706 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 4707 switch (power_mode){ 4708 case HCI_POWER_ON: 4709 hci_power_enter_initializing_state(); 4710 break; 4711 case HCI_POWER_OFF: 4712 hci_power_enter_halting_state(); 4713 break; 4714 case HCI_POWER_SLEEP: 4715 // do nothing 4716 break; 4717 default: 4718 btstack_assert(false); 4719 break; 4720 } 4721 return ERROR_CODE_SUCCESS; 4722 } 4723 4724 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 4725 int err; 4726 switch (power_mode){ 4727 case HCI_POWER_ON: 4728 err = hci_power_control_wake(); 4729 if (err) return err; 4730 hci_power_enter_initializing_state(); 4731 break; 4732 case HCI_POWER_OFF: 4733 hci_power_enter_halting_state(); 4734 break; 4735 case HCI_POWER_SLEEP: 4736 // do nothing 4737 break; 4738 default: 4739 btstack_assert(false); 4740 break; 4741 } 4742 return ERROR_CODE_SUCCESS; 4743 } 4744 4745 int hci_power_control(HCI_POWER_MODE power_mode){ 4746 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 4747 int err = 0; 4748 switch (hci_stack->state){ 4749 case HCI_STATE_OFF: 4750 err = hci_power_control_state_off(power_mode); 4751 break; 4752 case HCI_STATE_INITIALIZING: 4753 err = hci_power_control_state_initializing(power_mode); 4754 break; 4755 case HCI_STATE_WORKING: 4756 err = hci_power_control_state_working(power_mode); 4757 break; 4758 case HCI_STATE_HALTING: 4759 err = hci_power_control_state_halting(power_mode); 4760 break; 4761 case HCI_STATE_FALLING_ASLEEP: 4762 err = hci_power_control_state_falling_asleep(power_mode); 4763 break; 4764 case HCI_STATE_SLEEPING: 4765 err = hci_power_control_state_sleeping(power_mode); 4766 break; 4767 default: 4768 btstack_assert(false); 4769 break; 4770 } 4771 if (err != 0){ 4772 return err; 4773 } 4774 4775 // create internal event 4776 hci_emit_state(); 4777 4778 // trigger next/first action 4779 hci_run(); 4780 4781 return 0; 4782 } 4783 4784 4785 static void hci_halting_run(void) { 4786 4787 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 4788 4789 hci_connection_t *connection; 4790 #ifdef ENABLE_BLE 4791 #ifdef ENABLE_LE_PERIPHERAL 4792 bool stop_advertismenets; 4793 #endif 4794 #endif 4795 4796 switch (hci_stack->substate) { 4797 case HCI_HALTING_CLASSIC_STOP: 4798 #ifdef ENABLE_CLASSIC 4799 if (!hci_can_send_command_packet_now()) return; 4800 4801 if (hci_stack->connectable || hci_stack->discoverable){ 4802 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4803 hci_send_cmd(&hci_write_scan_enable, 0); 4804 return; 4805 } 4806 #endif 4807 /* fall through */ 4808 4809 case HCI_HALTING_LE_ADV_STOP: 4810 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4811 4812 #ifdef ENABLE_BLE 4813 #ifdef ENABLE_LE_PERIPHERAL 4814 if (!hci_can_send_command_packet_now()) return; 4815 4816 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 4817 4818 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4819 if (hci_extended_advertising_supported()){ 4820 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4821 btstack_linked_list_iterator_t it; 4822 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4823 // stop all periodic advertisements and check if an extended set is active 4824 while (btstack_linked_list_iterator_has_next(&it)){ 4825 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 4826 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 4827 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 4828 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 4829 return; 4830 } 4831 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 4832 stop_advertismenets = true; 4833 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4834 } 4835 } 4836 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 4837 if (stop_advertismenets){ 4838 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4839 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 4840 return; 4841 } 4842 } 4843 else 4844 #else 4845 { 4846 if (stop_advertismenets) { 4847 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4848 hci_send_cmd(&hci_le_set_advertise_enable, 0); 4849 return; 4850 } 4851 } 4852 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 4853 #endif /* ENABLE_LE_PERIPHERAL */ 4854 #endif /* ENABLE_BLE */ 4855 4856 /* fall through */ 4857 4858 case HCI_HALTING_LE_SCAN_STOP: 4859 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 4860 if (!hci_can_send_command_packet_now()) return; 4861 4862 #ifdef ENABLE_BLE 4863 #ifdef ENABLE_LE_CENTRAL 4864 if (hci_stack->le_scanning_active){ 4865 hci_le_scan_stop(); 4866 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4867 return; 4868 } 4869 #endif 4870 #endif 4871 4872 /* fall through */ 4873 4874 case HCI_HALTING_DISCONNECT_ALL: 4875 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4876 if (!hci_can_send_command_packet_now()) return; 4877 4878 // close all open connections 4879 connection = (hci_connection_t *) hci_stack->connections; 4880 if (connection) { 4881 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 4882 4883 // check state 4884 if (connection->state == SENT_DISCONNECT) return; 4885 connection->state = SENT_DISCONNECT; 4886 4887 log_info("HCI_STATE_HALTING, connection %p, handle %u", connection, con_handle); 4888 4889 // finally, send the disconnect command 4890 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4891 return; 4892 } 4893 4894 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4895 // stop BIGs and BIG Syncs 4896 if (hci_stack->le_audio_bigs != NULL){ 4897 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 4898 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 4899 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 4900 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 4901 return; 4902 } 4903 if (hci_stack->le_audio_big_syncs != NULL){ 4904 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 4905 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 4906 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 4907 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 4908 return; 4909 } 4910 #endif 4911 4912 btstack_run_loop_remove_timer(&hci_stack->timeout); 4913 4914 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 4915 log_info("HCI_STATE_HALTING: wait 50 ms"); 4916 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 4917 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 4918 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4919 btstack_run_loop_add_timer(&hci_stack->timeout); 4920 break; 4921 4922 case HCI_HALTING_CLOSE: 4923 // close left over connections (that had not been properly closed before) 4924 hci_discard_connections(); 4925 4926 log_info("HCI_STATE_HALTING, calling off"); 4927 4928 // switch mode 4929 hci_power_control_off(); 4930 4931 log_info("HCI_STATE_HALTING, emitting state"); 4932 hci_emit_state(); 4933 log_info("HCI_STATE_HALTING, done"); 4934 break; 4935 4936 case HCI_HALTING_W4_CLOSE_TIMER: 4937 // keep waiting 4938 4939 break; 4940 default: 4941 break; 4942 } 4943 }; 4944 4945 static void hci_falling_asleep_run(void){ 4946 hci_connection_t * connection; 4947 switch(hci_stack->substate) { 4948 case HCI_FALLING_ASLEEP_DISCONNECT: 4949 log_info("HCI_STATE_FALLING_ASLEEP"); 4950 // close all open connections 4951 connection = (hci_connection_t *) hci_stack->connections; 4952 if (connection){ 4953 4954 // send disconnect 4955 if (!hci_can_send_command_packet_now()) return; 4956 4957 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 4958 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4959 4960 // send disconnected event right away - causes higher layer connections to get closed, too. 4961 hci_shutdown_connection(connection); 4962 return; 4963 } 4964 4965 if (hci_classic_supported()){ 4966 // disable page and inquiry scan 4967 if (!hci_can_send_command_packet_now()) return; 4968 4969 log_info("HCI_STATE_HALTING, disabling inq scans"); 4970 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 4971 4972 // continue in next sub state 4973 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 4974 break; 4975 } 4976 4977 /* fall through */ 4978 4979 case HCI_FALLING_ASLEEP_COMPLETE: 4980 log_info("HCI_STATE_HALTING, calling sleep"); 4981 // switch mode 4982 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 4983 hci_emit_state(); 4984 break; 4985 4986 default: 4987 break; 4988 } 4989 } 4990 4991 #ifdef ENABLE_CLASSIC 4992 4993 static void hci_update_scan_enable(void){ 4994 // 2 = page scan, 1 = inq scan 4995 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 4996 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 4997 hci_run(); 4998 } 4999 5000 void gap_discoverable_control(uint8_t enable){ 5001 if (enable) enable = 1; // normalize argument 5002 5003 if (hci_stack->discoverable == enable){ 5004 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5005 return; 5006 } 5007 5008 hci_stack->discoverable = enable; 5009 hci_update_scan_enable(); 5010 } 5011 5012 void gap_connectable_control(uint8_t enable){ 5013 if (enable) enable = 1; // normalize argument 5014 5015 // don't emit event 5016 if (hci_stack->connectable == enable) return; 5017 5018 hci_stack->connectable = enable; 5019 hci_update_scan_enable(); 5020 } 5021 #endif 5022 5023 void gap_local_bd_addr(bd_addr_t address_buffer){ 5024 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5025 } 5026 5027 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5028 static void hci_host_num_completed_packets(void){ 5029 5030 // create packet manually as arrays are not supported and num_commands should not get reduced 5031 hci_reserve_packet_buffer(); 5032 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5033 5034 uint16_t size = 0; 5035 uint16_t num_handles = 0; 5036 packet[size++] = 0x35; 5037 packet[size++] = 0x0c; 5038 size++; // skip param len 5039 size++; // skip num handles 5040 5041 // add { handle, packets } entries 5042 btstack_linked_item_t * it; 5043 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5044 hci_connection_t * connection = (hci_connection_t *) it; 5045 if (connection->num_packets_completed){ 5046 little_endian_store_16(packet, size, connection->con_handle); 5047 size += 2; 5048 little_endian_store_16(packet, size, connection->num_packets_completed); 5049 size += 2; 5050 // 5051 num_handles++; 5052 connection->num_packets_completed = 0; 5053 } 5054 } 5055 5056 packet[2] = size - 3; 5057 packet[3] = num_handles; 5058 5059 hci_stack->host_completed_packets = 0; 5060 5061 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5062 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5063 5064 // release packet buffer for synchronous transport implementations 5065 if (hci_transport_synchronous()){ 5066 hci_release_packet_buffer(); 5067 hci_emit_transport_packet_sent(); 5068 } 5069 } 5070 #endif 5071 5072 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5073 UNUSED(ds); 5074 hci_stack->substate = HCI_HALTING_CLOSE; 5075 // allow packet handlers to defer final shutdown 5076 hci_emit_state(); 5077 hci_run(); 5078 } 5079 5080 static bool hci_run_acl_fragments(void){ 5081 if (hci_stack->acl_fragmentation_total_size > 0u) { 5082 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5083 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5084 if (connection) { 5085 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5086 hci_send_acl_packet_fragments(connection); 5087 return true; 5088 } 5089 } else { 5090 // connection gone -> discard further fragments 5091 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5092 hci_stack->acl_fragmentation_total_size = 0; 5093 hci_stack->acl_fragmentation_pos = 0; 5094 } 5095 } 5096 return false; 5097 } 5098 5099 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5100 static bool hci_run_iso_fragments(void){ 5101 if (hci_stack->iso_fragmentation_total_size > 0u) { 5102 // TODO: flow control 5103 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5104 hci_send_iso_packet_fragments(); 5105 return true; 5106 } 5107 } 5108 return false; 5109 } 5110 #endif 5111 5112 #ifdef ENABLE_CLASSIC 5113 5114 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5115 static bool hci_classic_operation_active(void) { 5116 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5117 return true; 5118 } 5119 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5120 return true; 5121 } 5122 btstack_linked_item_t * it; 5123 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5124 hci_connection_t *connection = (hci_connection_t *) it; 5125 switch (connection->state) { 5126 case SENT_CREATE_CONNECTION: 5127 case SENT_CANCEL_CONNECTION: 5128 case SENT_DISCONNECT: 5129 return true; 5130 default: 5131 break; 5132 } 5133 } 5134 return false; 5135 } 5136 #endif 5137 5138 static bool hci_run_general_gap_classic(void){ 5139 5140 // assert stack is working and classic is active 5141 if (hci_classic_supported() == false) return false; 5142 if (hci_stack->state != HCI_STATE_WORKING) return false; 5143 5144 // decline incoming connections 5145 if (hci_stack->decline_reason){ 5146 uint8_t reason = hci_stack->decline_reason; 5147 hci_stack->decline_reason = 0; 5148 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5149 return true; 5150 } 5151 5152 if (hci_stack->gap_tasks_classic != 0){ 5153 hci_run_gap_tasks_classic(); 5154 return true; 5155 } 5156 5157 // start/stop inquiry 5158 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5159 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5160 if (hci_classic_operation_active() == false) 5161 #endif 5162 { 5163 uint8_t duration = hci_stack->inquiry_state; 5164 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5165 if (hci_stack->inquiry_max_period_length != 0){ 5166 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); 5167 } else { 5168 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5169 } 5170 return true; 5171 } 5172 } 5173 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5174 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5175 hci_send_cmd(&hci_inquiry_cancel); 5176 return true; 5177 } 5178 5179 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5180 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5181 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5182 return true; 5183 } 5184 5185 // remote name request 5186 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5187 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5188 if (hci_classic_operation_active() == false) 5189 #endif 5190 { 5191 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5192 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5193 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5194 return true; 5195 } 5196 } 5197 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5198 // Local OOB data 5199 if (hci_stack->classic_read_local_oob_data){ 5200 hci_stack->classic_read_local_oob_data = false; 5201 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5202 hci_send_cmd(&hci_read_local_extended_oob_data); 5203 } else { 5204 hci_send_cmd(&hci_read_local_oob_data); 5205 } 5206 } 5207 #endif 5208 // pairing 5209 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5210 uint8_t state = hci_stack->gap_pairing_state; 5211 uint8_t pin_code[16]; 5212 switch (state){ 5213 case GAP_PAIRING_STATE_SEND_PIN: 5214 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5215 memset(pin_code, 0, 16); 5216 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5217 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5218 break; 5219 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5220 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5221 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5222 break; 5223 case GAP_PAIRING_STATE_SEND_PASSKEY: 5224 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5225 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5226 break; 5227 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5228 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5229 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5230 break; 5231 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5232 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5233 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5234 break; 5235 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5236 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5237 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5238 break; 5239 default: 5240 break; 5241 } 5242 return true; 5243 } 5244 return false; 5245 } 5246 #endif 5247 5248 #ifdef ENABLE_BLE 5249 5250 #ifdef ENABLE_LE_CENTRAL 5251 static void hci_le_scan_stop(void){ 5252 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5253 if (hci_extended_advertising_supported()) { 5254 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5255 } else 5256 #endif 5257 { 5258 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5259 } 5260 } 5261 #endif 5262 5263 #ifdef ENABLE_LE_PERIPHERAL 5264 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5265 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5266 uint8_t operation = 0; 5267 if (pos == 0){ 5268 // first fragment or complete data 5269 operation |= 1; 5270 } 5271 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5272 // last fragment or complete data 5273 operation |= 2; 5274 } 5275 return operation; 5276 } 5277 #endif 5278 #endif 5279 5280 static bool hci_run_general_gap_le(void){ 5281 5282 btstack_linked_list_iterator_t lit; 5283 5284 // Phase 1: collect what to stop 5285 5286 #ifdef ENABLE_LE_CENTRAL 5287 bool scanning_stop = false; 5288 bool connecting_stop = false; 5289 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5290 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5291 bool periodic_sync_stop = false; 5292 #endif 5293 #endif 5294 #endif 5295 5296 #ifdef ENABLE_LE_PERIPHERAL 5297 bool advertising_stop = false; 5298 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5299 le_advertising_set_t * advertising_stop_set = NULL; 5300 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5301 bool periodic_advertising_stop = false; 5302 #endif 5303 #endif 5304 #endif 5305 5306 // check if own address changes 5307 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5308 5309 // check if whitelist needs modification 5310 bool whitelist_modification_pending = false; 5311 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5312 while (btstack_linked_list_iterator_has_next(&lit)){ 5313 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5314 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5315 whitelist_modification_pending = true; 5316 break; 5317 } 5318 } 5319 5320 // check if resolving list needs modification 5321 bool resolving_list_modification_pending = false; 5322 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5323 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5324 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5325 resolving_list_modification_pending = true; 5326 } 5327 #endif 5328 5329 #ifdef ENABLE_LE_CENTRAL 5330 5331 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5332 // check if periodic advertiser list needs modification 5333 bool periodic_list_modification_pending = false; 5334 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5335 while (btstack_linked_list_iterator_has_next(&lit)){ 5336 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5337 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5338 periodic_list_modification_pending = true; 5339 break; 5340 } 5341 } 5342 #endif 5343 5344 // scanning control 5345 if (hci_stack->le_scanning_active) { 5346 // stop if: 5347 // - parameter change required 5348 // - it's disabled 5349 // - whitelist change required but used for scanning 5350 // - resolving list modified 5351 // - own address changes 5352 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5353 if ((hci_stack->le_scanning_param_update) || 5354 !hci_stack->le_scanning_enabled || 5355 (scanning_uses_whitelist && whitelist_modification_pending) || 5356 resolving_list_modification_pending || 5357 random_address_change){ 5358 5359 scanning_stop = true; 5360 } 5361 } 5362 5363 // connecting control 5364 bool connecting_with_whitelist; 5365 switch (hci_stack->le_connecting_state){ 5366 case LE_CONNECTING_DIRECT: 5367 case LE_CONNECTING_WHITELIST: 5368 // stop connecting if: 5369 // - connecting uses white and whitelist modification pending 5370 // - if it got disabled 5371 // - resolving list modified 5372 // - own address changes 5373 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5374 if ((connecting_with_whitelist && whitelist_modification_pending) || 5375 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5376 resolving_list_modification_pending || 5377 random_address_change) { 5378 5379 connecting_stop = true; 5380 } 5381 break; 5382 default: 5383 break; 5384 } 5385 5386 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5387 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5388 // periodic sync control 5389 bool sync_with_advertiser_list; 5390 switch(hci_stack->le_periodic_sync_state){ 5391 case LE_CONNECTING_DIRECT: 5392 case LE_CONNECTING_WHITELIST: 5393 // stop sync if: 5394 // - sync with advertiser list and advertiser list modification pending 5395 // - if it got disabled 5396 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5397 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5398 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5399 periodic_sync_stop = true; 5400 } 5401 break; 5402 default: 5403 break; 5404 } 5405 #endif 5406 #endif 5407 5408 #endif /* ENABLE_LE_CENTRAL */ 5409 5410 #ifdef ENABLE_LE_PERIPHERAL 5411 // le advertisement control 5412 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5413 // stop if: 5414 // - parameter change required 5415 // - random address used in advertising and changes 5416 // - it's disabled 5417 // - whitelist change required but used for advertisement filter policy 5418 // - resolving list modified 5419 // - own address changes 5420 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5421 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5422 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5423 if (advertising_change || 5424 (advertising_uses_random_address && random_address_change) || 5425 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5426 (advertising_uses_whitelist && whitelist_modification_pending) || 5427 resolving_list_modification_pending || 5428 random_address_change) { 5429 5430 advertising_stop = true; 5431 } 5432 } 5433 5434 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5435 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5436 btstack_linked_list_iterator_t it; 5437 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5438 while (btstack_linked_list_iterator_has_next(&it)){ 5439 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5440 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5441 // stop if: 5442 // - parameter change required 5443 // - random address used in connectable advertising and changes 5444 // - it's disabled 5445 // - whitelist change required but used for advertisement filter policy 5446 // - resolving list modified 5447 // - own address changes 5448 // - advertisement set will be removed 5449 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5450 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5451 bool advertising_uses_random_address = 5452 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5453 advertising_connectable; 5454 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5455 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5456 bool advertising_set_random_address_change = 5457 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5458 bool advertising_set_will_be_removed = 5459 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5460 if (advertising_parameter_change || 5461 (advertising_uses_random_address && advertising_set_random_address_change) || 5462 (advertising_enabled == false) || 5463 (advertising_uses_whitelist && whitelist_modification_pending) || 5464 resolving_list_modification_pending || 5465 advertising_set_will_be_removed) { 5466 5467 advertising_stop = true; 5468 advertising_stop_set = advertising_set; 5469 break; 5470 } 5471 } 5472 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5473 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5474 // stop if: 5475 // - it's disabled 5476 // - parameter change required 5477 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5478 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5479 if ((periodic_enabled == false) || periodic_parameter_change){ 5480 periodic_advertising_stop = true; 5481 advertising_stop_set = advertising_set; 5482 } 5483 } 5484 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5485 } 5486 } 5487 #endif 5488 5489 #endif 5490 5491 5492 // Phase 2: stop everything that should be off during modifications 5493 5494 5495 // 2.1 Outgoing connection 5496 #ifdef ENABLE_LE_CENTRAL 5497 if (connecting_stop){ 5498 hci_send_cmd(&hci_le_create_connection_cancel); 5499 return true; 5500 } 5501 #endif 5502 5503 // 2.2 Scanning 5504 #ifdef ENABLE_LE_CENTRAL 5505 if (scanning_stop){ 5506 hci_stack->le_scanning_active = false; 5507 hci_le_scan_stop(); 5508 return true; 5509 } 5510 5511 // 2.3 Periodic Sync 5512 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5513 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5514 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5515 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5516 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5517 return true; 5518 } 5519 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5520 if (periodic_sync_stop){ 5521 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5522 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5523 return true; 5524 } 5525 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5526 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5527 #endif /* ENABLE_LE_CENTRAL */ 5528 5529 // 2.4 Advertising: legacy, extended, periodic 5530 #ifdef ENABLE_LE_PERIPHERAL 5531 if (advertising_stop){ 5532 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5533 if (hci_extended_advertising_supported()) { 5534 uint8_t advertising_stop_handle; 5535 if (advertising_stop_set != NULL){ 5536 advertising_stop_handle = advertising_stop_set->advertising_handle; 5537 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5538 } else { 5539 advertising_stop_handle = 0; 5540 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5541 } 5542 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5543 const uint16_t durations[] = { 0 }; 5544 const uint16_t max_events[] = { 0 }; 5545 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5546 } else 5547 #endif 5548 { 5549 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5550 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5551 } 5552 return true; 5553 } 5554 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5555 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5556 if (periodic_advertising_stop){ 5557 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5558 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5559 return true; 5560 } 5561 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5562 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5563 #endif /* ENABLE_LE_PERIPHERAL */ 5564 5565 5566 // Phase 3: modify 5567 5568 if (random_address_change){ 5569 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5570 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5571 if (hci_extended_advertising_supported()) { 5572 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5573 } 5574 #endif 5575 { 5576 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5577 } 5578 return true; 5579 } 5580 5581 #ifdef ENABLE_LE_CENTRAL 5582 if (hci_stack->le_scanning_param_update){ 5583 hci_stack->le_scanning_param_update = false; 5584 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5585 if (hci_extended_advertising_supported()){ 5586 // prepare arrays for all PHYs 5587 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5588 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5589 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5590 uint8_t scanning_phys = 1; // LE 1M PHY 5591 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5592 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5593 } else 5594 #endif 5595 { 5596 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5597 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5598 } 5599 return true; 5600 } 5601 #endif 5602 5603 #ifdef ENABLE_LE_PERIPHERAL 5604 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5605 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5606 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5607 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5608 if (hci_extended_advertising_supported()){ 5609 // map advertisment type to advertising event properties 5610 uint16_t adv_event_properties = 0; 5611 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 5612 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 5613 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 5614 } 5615 hci_stack->le_advertising_set_in_current_command = 0; 5616 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5617 0, 5618 adv_event_properties, 5619 hci_stack->le_advertisements_interval_min, 5620 hci_stack->le_advertisements_interval_max, 5621 hci_stack->le_advertisements_channel_map, 5622 hci_stack->le_advertisements_own_addr_type, 5623 hci_stack->le_advertisements_direct_address_type, 5624 hci_stack->le_advertisements_direct_address, 5625 hci_stack->le_advertisements_filter_policy, 5626 0x7f, // tx power: no preference 5627 0x01, // primary adv phy: LE 1M 5628 0, // secondary adv max skip 5629 0, // secondary adv phy 5630 0, // adv sid 5631 0 // scan request notification 5632 ); 5633 } 5634 #endif 5635 { 5636 hci_send_cmd(&hci_le_set_advertising_parameters, 5637 hci_stack->le_advertisements_interval_min, 5638 hci_stack->le_advertisements_interval_max, 5639 hci_stack->le_advertisements_type, 5640 hci_stack->le_advertisements_own_addr_type, 5641 hci_stack->le_advertisements_direct_address_type, 5642 hci_stack->le_advertisements_direct_address, 5643 hci_stack->le_advertisements_channel_map, 5644 hci_stack->le_advertisements_filter_policy); 5645 } 5646 return true; 5647 } 5648 5649 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 5650 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5651 uint8_t adv_data_clean[31]; 5652 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 5653 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 5654 hci_stack->le_advertisements_data_len); 5655 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 5656 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5657 if (hci_extended_advertising_supported()){ 5658 hci_stack->le_advertising_set_in_current_command = 0; 5659 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 5660 } else 5661 #endif 5662 { 5663 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 5664 } 5665 return true; 5666 } 5667 5668 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 5669 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5670 uint8_t scan_data_clean[31]; 5671 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 5672 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 5673 hci_stack->le_scan_response_data_len); 5674 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 5675 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5676 if (hci_extended_advertising_supported()){ 5677 hci_stack->le_advertising_set_in_current_command = 0; 5678 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 5679 } else 5680 #endif 5681 { 5682 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 5683 } 5684 return true; 5685 } 5686 5687 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5688 if (hci_extended_advertising_supported()) { 5689 btstack_linked_list_iterator_t it; 5690 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5691 while (btstack_linked_list_iterator_has_next(&it)){ 5692 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5693 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 5694 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 5695 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5696 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 5697 return true; 5698 } 5699 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 5700 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5701 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 5702 return true; 5703 } 5704 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 5705 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5706 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5707 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5708 advertising_set->advertising_handle, 5709 advertising_set->extended_params.advertising_event_properties, 5710 advertising_set->extended_params.primary_advertising_interval_min, 5711 advertising_set->extended_params.primary_advertising_interval_max, 5712 advertising_set->extended_params.primary_advertising_channel_map, 5713 advertising_set->extended_params.own_address_type, 5714 advertising_set->extended_params.peer_address_type, 5715 advertising_set->extended_params.peer_address, 5716 advertising_set->extended_params.advertising_filter_policy, 5717 advertising_set->extended_params.advertising_tx_power, 5718 advertising_set->extended_params.primary_advertising_phy, 5719 advertising_set->extended_params.secondary_advertising_max_skip, 5720 advertising_set->extended_params.secondary_advertising_phy, 5721 advertising_set->extended_params.advertising_sid, 5722 advertising_set->extended_params.scan_request_notification_enable 5723 ); 5724 return true; 5725 } 5726 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 5727 uint16_t pos = advertising_set->adv_data_pos; 5728 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 5729 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5730 if ((operation & 0x02) != 0){ 5731 // last fragment or complete data 5732 operation |= 2; 5733 advertising_set->adv_data_pos = 0; 5734 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5735 } else { 5736 advertising_set->adv_data_pos += data_to_upload; 5737 } 5738 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5739 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 5740 return true; 5741 } 5742 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 5743 uint16_t pos = advertising_set->scan_data_pos; 5744 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 5745 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5746 if ((operation & 0x02) != 0){ 5747 advertising_set->scan_data_pos = 0; 5748 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5749 } else { 5750 advertising_set->scan_data_pos += data_to_upload; 5751 } 5752 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5753 hci_send_cmd(&hci_le_set_extended_scan_response_data, operation, 0x03, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 5754 return true; 5755 } 5756 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5757 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 5758 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 5759 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5760 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 5761 advertising_set->advertising_handle, 5762 advertising_set->periodic_params.periodic_advertising_interval_min, 5763 advertising_set->periodic_params.periodic_advertising_interval_max, 5764 advertising_set->periodic_params.periodic_advertising_properties); 5765 return true; 5766 } 5767 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 5768 uint16_t pos = advertising_set->periodic_data_pos; 5769 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 5770 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5771 if ((operation & 0x02) != 0){ 5772 // last fragment or complete data 5773 operation |= 2; 5774 advertising_set->periodic_data_pos = 0; 5775 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 5776 } else { 5777 advertising_set->periodic_data_pos += data_to_upload; 5778 } 5779 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5780 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 5781 return true; 5782 } 5783 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5784 } 5785 } 5786 #endif 5787 5788 #endif 5789 5790 #ifdef ENABLE_LE_CENTRAL 5791 // if connect with whitelist was active and is not cancelled yet, wait until next time 5792 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 5793 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5794 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 5795 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 5796 #endif 5797 #endif 5798 5799 // LE Whitelist Management 5800 if (whitelist_modification_pending){ 5801 // add/remove entries 5802 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5803 while (btstack_linked_list_iterator_has_next(&lit)){ 5804 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5805 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5806 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 5807 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 5808 return true; 5809 } 5810 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 5811 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 5812 entry->state |= LE_WHITELIST_ON_CONTROLLER; 5813 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 5814 return true; 5815 } 5816 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 5817 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 5818 btstack_memory_whitelist_entry_free(entry); 5819 } 5820 } 5821 } 5822 5823 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5824 // LE Resolving List Management 5825 if (resolving_list_supported) { 5826 uint16_t i; 5827 switch (hci_stack->le_resolving_list_state) { 5828 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 5829 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 5830 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 5831 return true; 5832 case LE_RESOLVING_LIST_READ_SIZE: 5833 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 5834 hci_send_cmd(&hci_le_read_resolving_list_size); 5835 return true; 5836 case LE_RESOLVING_LIST_SEND_CLEAR: 5837 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 5838 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 5839 sizeof(hci_stack->le_resolving_list_add_entries)); 5840 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 5841 sizeof(hci_stack->le_resolving_list_remove_entries)); 5842 hci_send_cmd(&hci_le_clear_resolving_list); 5843 return true; 5844 case LE_RESOLVING_LIST_REMOVE_ENTRIES: 5845 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5846 uint8_t offset = i >> 3; 5847 uint8_t mask = 1 << (i & 7); 5848 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 5849 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 5850 bd_addr_t peer_identity_addreses; 5851 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5852 sm_key_t peer_irk; 5853 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5854 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5855 5856 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 5857 // trigger whitelist entry 'update' (work around for controller bug) 5858 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5859 while (btstack_linked_list_iterator_has_next(&lit)) { 5860 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 5861 if (entry->address_type != peer_identity_addr_type) continue; 5862 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 5863 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 5864 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 5865 } 5866 #endif 5867 5868 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 5869 peer_identity_addreses); 5870 return true; 5871 } 5872 5873 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_ADD_ENTRIES; 5874 5875 /* fall through */ 5876 5877 case LE_RESOLVING_LIST_ADD_ENTRIES: 5878 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5879 uint8_t offset = i >> 3; 5880 uint8_t mask = 1 << (i & 7); 5881 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 5882 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 5883 bd_addr_t peer_identity_addreses; 5884 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5885 sm_key_t peer_irk; 5886 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5887 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5888 const uint8_t *local_irk = gap_get_persistent_irk(); 5889 // command uses format specifier 'P' that stores 16-byte value without flip 5890 uint8_t local_irk_flipped[16]; 5891 uint8_t peer_irk_flipped[16]; 5892 reverse_128(local_irk, local_irk_flipped); 5893 reverse_128(peer_irk, peer_irk_flipped); 5894 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 5895 peer_irk_flipped, local_irk_flipped); 5896 return true; 5897 } 5898 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5899 break; 5900 5901 default: 5902 break; 5903 } 5904 } 5905 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5906 #endif 5907 5908 #ifdef ENABLE_LE_CENTRAL 5909 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5910 // LE Whitelist Management 5911 if (periodic_list_modification_pending){ 5912 // add/remove entries 5913 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5914 while (btstack_linked_list_iterator_has_next(&lit)){ 5915 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5916 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 5917 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5918 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 5919 return true; 5920 } 5921 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 5922 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5923 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 5924 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 5925 return true; 5926 } 5927 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 5928 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 5929 btstack_memory_periodic_advertiser_list_entry_free(entry); 5930 } 5931 } 5932 } 5933 #endif 5934 #endif 5935 5936 // post-pone all actions until stack is fully working 5937 if (hci_stack->state != HCI_STATE_WORKING) return false; 5938 5939 // advertisements, active scanning, and creating connections requires random address to be set if using private address 5940 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 5941 5942 // Phase 4: restore state 5943 5944 #ifdef ENABLE_LE_CENTRAL 5945 // re-start scanning 5946 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 5947 hci_stack->le_scanning_active = true; 5948 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5949 if (hci_extended_advertising_supported()){ 5950 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, 0, 0, 0); 5951 } else 5952 #endif 5953 { 5954 hci_send_cmd(&hci_le_set_scan_enable, 1, 0); 5955 } 5956 return true; 5957 } 5958 #endif 5959 5960 #ifdef ENABLE_LE_CENTRAL 5961 // re-start connecting 5962 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 5963 bd_addr_t null_addr; 5964 memset(null_addr, 0, 6); 5965 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 5966 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 5967 hci_send_cmd(&hci_le_create_connection, 5968 hci_stack->le_connection_scan_interval, // scan interval: 60 ms 5969 hci_stack->le_connection_scan_window, // scan interval: 30 ms 5970 1, // use whitelist 5971 0, // peer address type 5972 null_addr, // peer bd addr 5973 hci_stack->le_connection_own_addr_type, // our addr type: 5974 hci_stack->le_connection_interval_min, // conn interval min 5975 hci_stack->le_connection_interval_max, // conn interval max 5976 hci_stack->le_connection_latency, // conn latency 5977 hci_stack->le_supervision_timeout, // conn latency 5978 hci_stack->le_minimum_ce_length, // min ce length 5979 hci_stack->le_maximum_ce_length // max ce length 5980 ); 5981 return true; 5982 } 5983 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5984 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 5985 switch(hci_stack->le_periodic_sync_request){ 5986 case LE_CONNECTING_DIRECT: 5987 case LE_CONNECTING_WHITELIST: 5988 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 5989 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 5990 hci_stack->le_periodic_sync_options, 5991 hci_stack->le_periodic_sync_advertising_sid, 5992 hci_stack->le_periodic_sync_advertiser_address_type, 5993 hci_stack->le_periodic_sync_advertiser_address, 5994 hci_stack->le_periodic_sync_skip, 5995 hci_stack->le_periodic_sync_timeout, 5996 hci_stack->le_periodic_sync_cte_type); 5997 return true; 5998 default: 5999 break; 6000 } 6001 } 6002 #endif 6003 #endif 6004 6005 #ifdef ENABLE_LE_PERIPHERAL 6006 // re-start advertising 6007 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6008 // check if advertisements should be enabled given 6009 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6010 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6011 6012 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6013 if (hci_extended_advertising_supported()){ 6014 const uint8_t advertising_handles[] = { 0 }; 6015 const uint16_t durations[] = { 0 }; 6016 const uint16_t max_events[] = { 0 }; 6017 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6018 } else 6019 #endif 6020 { 6021 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6022 } 6023 return true; 6024 } 6025 6026 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6027 if (hci_extended_advertising_supported()) { 6028 btstack_linked_list_iterator_t it; 6029 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6030 while (btstack_linked_list_iterator_has_next(&it)) { 6031 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6032 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6033 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6034 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6035 const uint16_t durations[] = { advertising_set->enable_timeout }; 6036 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6037 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6038 return true; 6039 } 6040 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6041 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6042 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6043 uint8_t enable = 1; 6044 if (advertising_set->periodic_include_adi){ 6045 enable |= 2; 6046 } 6047 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6048 return true; 6049 } 6050 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6051 } 6052 } 6053 #endif 6054 #endif 6055 6056 return false; 6057 } 6058 6059 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6060 static bool hci_run_iso_tasks(void){ 6061 btstack_linked_list_iterator_t it; 6062 6063 // BIG 6064 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6065 while (btstack_linked_list_iterator_has_next(&it)){ 6066 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6067 switch (big->state){ 6068 case LE_AUDIO_BIG_STATE_CREATE: 6069 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6070 hci_send_cmd(&hci_le_create_big, 6071 big->params->big_handle, 6072 big->params->advertising_handle, 6073 big->params->num_bis, 6074 big->params->sdu_interval_us, 6075 big->params->max_sdu, 6076 big->params->max_transport_latency_ms, 6077 big->params->rtn, 6078 big->params->phy, 6079 big->params->packing, 6080 big->params->framing, 6081 big->params->encryption, 6082 big->params->broadcast_code); 6083 return true; 6084 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6085 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6086 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); 6087 return true; 6088 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6089 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6090 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6091 break; 6092 case LE_AUDIO_BIG_STATE_TERMINATE: 6093 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6094 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6095 return true; 6096 default: 6097 break; 6098 } 6099 } 6100 6101 // BIG Sync 6102 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6103 while (btstack_linked_list_iterator_has_next(&it)){ 6104 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6105 switch (big_sync->state){ 6106 case LE_AUDIO_BIG_STATE_CREATE: 6107 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6108 hci_send_cmd(&hci_le_big_create_sync, 6109 big_sync->params->big_handle, 6110 big_sync->params->sync_handle, 6111 big_sync->params->encryption, 6112 big_sync->params->broadcast_code, 6113 big_sync->params->mse, 6114 big_sync->params->big_sync_timeout_10ms, 6115 big_sync->params->num_bis, 6116 big_sync->params->bis_indices); 6117 return true; 6118 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6119 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6120 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); 6121 return true; 6122 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6123 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6124 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6125 break; 6126 case LE_AUDIO_BIG_STATE_TERMINATE: 6127 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6128 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6129 return true; 6130 default: 6131 break; 6132 } 6133 } 6134 6135 return false; 6136 } 6137 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6138 #endif 6139 6140 static bool hci_run_general_pending_commands(void){ 6141 btstack_linked_item_t * it; 6142 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6143 hci_connection_t * connection = (hci_connection_t *) it; 6144 6145 switch(connection->state){ 6146 case SEND_CREATE_CONNECTION: 6147 switch(connection->address_type){ 6148 #ifdef ENABLE_CLASSIC 6149 case BD_ADDR_TYPE_ACL: 6150 log_info("sending hci_create_connection"); 6151 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6152 break; 6153 #endif 6154 default: 6155 #ifdef ENABLE_BLE 6156 #ifdef ENABLE_LE_CENTRAL 6157 log_info("sending hci_le_create_connection"); 6158 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6159 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6160 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6161 if (hci_extended_advertising_supported()) { 6162 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 6163 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 6164 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 6165 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 6166 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 6167 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 6168 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 6169 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 6170 hci_send_cmd(&hci_le_extended_create_connection, 6171 0, // don't use whitelist 6172 hci_stack->le_connection_own_addr_type, // our addr type: 6173 connection->address_type, // peer address type 6174 connection->address, // peer bd addr 6175 1, // initiating PHY - 1M 6176 le_connection_scan_interval, // conn scan interval 6177 le_connection_scan_window, // conn scan windows 6178 le_connection_interval_min, // conn interval min 6179 le_connection_interval_max, // conn interval max 6180 le_connection_latency, // conn latency 6181 le_supervision_timeout, // conn latency 6182 le_minimum_ce_length, // min ce length 6183 le_maximum_ce_length // max ce length 6184 ); } 6185 else 6186 #endif 6187 { 6188 hci_send_cmd(&hci_le_create_connection, 6189 hci_stack->le_connection_scan_interval, // conn scan interval 6190 hci_stack->le_connection_scan_window, // conn scan windows 6191 0, // don't use whitelist 6192 connection->address_type, // peer address type 6193 connection->address, // peer bd addr 6194 hci_stack->le_connection_own_addr_type, // our addr type: 6195 hci_stack->le_connection_interval_min, // conn interval min 6196 hci_stack->le_connection_interval_max, // conn interval max 6197 hci_stack->le_connection_latency, // conn latency 6198 hci_stack->le_supervision_timeout, // conn latency 6199 hci_stack->le_minimum_ce_length, // min ce length 6200 hci_stack->le_maximum_ce_length // max ce length 6201 ); 6202 } 6203 connection->state = SENT_CREATE_CONNECTION; 6204 #endif 6205 #endif 6206 break; 6207 } 6208 return true; 6209 6210 #ifdef ENABLE_CLASSIC 6211 case RECEIVED_CONNECTION_REQUEST: 6212 connection->role = HCI_ROLE_SLAVE; 6213 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6214 log_info("sending hci_accept_connection_request"); 6215 connection->state = ACCEPTED_CONNECTION_REQUEST; 6216 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6217 return true; 6218 } 6219 break; 6220 #endif 6221 6222 #ifdef ENABLE_BLE 6223 #ifdef ENABLE_LE_CENTRAL 6224 case SEND_CANCEL_CONNECTION: 6225 connection->state = SENT_CANCEL_CONNECTION; 6226 hci_send_cmd(&hci_le_create_connection_cancel); 6227 return true; 6228 #endif 6229 #endif 6230 case SEND_DISCONNECT: 6231 connection->state = SENT_DISCONNECT; 6232 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6233 return true; 6234 6235 default: 6236 break; 6237 } 6238 6239 // no further commands if connection is about to get shut down 6240 if (connection->state == SENT_DISCONNECT) continue; 6241 6242 #ifdef ENABLE_CLASSIC 6243 6244 // Handling link key request requires remote supported features 6245 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6246 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6247 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6248 6249 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6250 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6251 if (have_link_key && security_level_sufficient){ 6252 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6253 } else { 6254 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6255 } 6256 return true; 6257 } 6258 6259 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6260 log_info("denying to pin request"); 6261 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6262 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6263 return true; 6264 } 6265 6266 // security assessment requires remote features 6267 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6268 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6269 hci_ssp_assess_security_on_io_cap_request(connection); 6270 // 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 6271 } 6272 6273 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6274 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6275 // set authentication requirements: 6276 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6277 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6278 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6279 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6280 authreq |= 1; 6281 } 6282 bool bonding = hci_stack->bondable; 6283 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6284 // if we have received IO Cap Response, we're in responder role 6285 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6286 if (bonding && !remote_bonding){ 6287 log_info("Remote not bonding, dropping local flag"); 6288 bonding = false; 6289 } 6290 } 6291 if (bonding){ 6292 if (connection->bonding_flags & BONDING_DEDICATED){ 6293 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6294 } else { 6295 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6296 } 6297 } 6298 uint8_t have_oob_data = 0; 6299 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6300 if (connection->classic_oob_c_192 != NULL){ 6301 have_oob_data |= 1; 6302 } 6303 if (connection->classic_oob_c_256 != NULL){ 6304 have_oob_data |= 2; 6305 } 6306 #endif 6307 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6308 return true; 6309 } 6310 6311 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6312 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6313 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6314 return true; 6315 } 6316 6317 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6318 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6319 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6320 const uint8_t zero[16] = { 0 }; 6321 const uint8_t * r_192 = zero; 6322 const uint8_t * c_192 = zero; 6323 const uint8_t * r_256 = zero; 6324 const uint8_t * c_256 = zero; 6325 // verify P-256 OOB 6326 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6327 c_256 = connection->classic_oob_c_256; 6328 if (connection->classic_oob_r_256 != NULL) { 6329 r_256 = connection->classic_oob_r_256; 6330 } 6331 } 6332 // verify P-192 OOB 6333 if ((connection->classic_oob_c_192 != NULL)) { 6334 c_192 = connection->classic_oob_c_192; 6335 if (connection->classic_oob_r_192 != NULL) { 6336 r_192 = connection->classic_oob_r_192; 6337 } 6338 } 6339 6340 // assess security 6341 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6342 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6343 if (need_level_4 && !can_reach_level_4){ 6344 log_info("Level 4 required, but not possible -> abort"); 6345 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6346 // send oob negative reply 6347 c_256 = NULL; 6348 c_192 = NULL; 6349 } 6350 6351 // Reply 6352 if (c_256 != zero) { 6353 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6354 } else if (c_192 != zero){ 6355 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6356 } else { 6357 hci_stack->classic_oob_con_handle = connection->con_handle; 6358 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6359 } 6360 return true; 6361 } 6362 #endif 6363 6364 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6365 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6366 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6367 return true; 6368 } 6369 6370 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6371 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6372 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6373 return true; 6374 } 6375 6376 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6377 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6378 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6379 return true; 6380 } 6381 6382 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6383 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6384 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6385 connection->state = SENT_DISCONNECT; 6386 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6387 return true; 6388 } 6389 6390 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6391 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6392 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6393 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6394 return true; 6395 } 6396 6397 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6398 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6399 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6400 return true; 6401 } 6402 6403 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 6404 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 6405 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 6406 return true; 6407 } 6408 6409 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 6410 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6411 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 6412 return true; 6413 } 6414 6415 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 6416 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 6417 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 6418 return true; 6419 } 6420 6421 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 6422 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 6423 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 6424 return true; 6425 } 6426 #endif 6427 6428 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 6429 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 6430 #ifdef ENABLE_CLASSIC 6431 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 6432 #endif 6433 if (connection->state != SENT_DISCONNECT){ 6434 connection->state = SENT_DISCONNECT; 6435 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 6436 return true; 6437 } 6438 } 6439 6440 #ifdef ENABLE_CLASSIC 6441 uint16_t sniff_min_interval; 6442 switch (connection->sniff_min_interval){ 6443 case 0: 6444 break; 6445 case 0xffff: 6446 connection->sniff_min_interval = 0; 6447 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 6448 return true; 6449 default: 6450 sniff_min_interval = connection->sniff_min_interval; 6451 connection->sniff_min_interval = 0; 6452 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 6453 return true; 6454 } 6455 6456 if (connection->sniff_subrating_max_latency != 0xffff){ 6457 uint16_t max_latency = connection->sniff_subrating_max_latency; 6458 connection->sniff_subrating_max_latency = 0; 6459 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 6460 return true; 6461 } 6462 6463 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 6464 uint8_t service_type = (uint8_t) connection->qos_service_type; 6465 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 6466 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); 6467 return true; 6468 } 6469 6470 if (connection->request_role != HCI_ROLE_INVALID){ 6471 hci_role_t role = connection->request_role; 6472 connection->request_role = HCI_ROLE_INVALID; 6473 hci_send_cmd(&hci_switch_role_command, connection->address, role); 6474 return true; 6475 } 6476 #endif 6477 6478 if (connection->gap_connection_tasks != 0){ 6479 #ifdef ENABLE_CLASSIC 6480 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6481 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6482 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6483 return true; 6484 } 6485 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6486 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6487 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6488 return true; 6489 } 6490 #endif 6491 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6492 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6493 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6494 return true; 6495 } 6496 } 6497 6498 #ifdef ENABLE_BLE 6499 switch (connection->le_con_parameter_update_state){ 6500 // response to L2CAP CON PARAMETER UPDATE REQUEST 6501 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 6502 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6503 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 6504 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6505 0x0000, 0xffff); 6506 return true; 6507 case CON_PARAMETER_UPDATE_REPLY: 6508 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6509 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 6510 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6511 0x0000, 0xffff); 6512 return true; 6513 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 6514 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6515 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 6516 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 6517 return true; 6518 default: 6519 break; 6520 } 6521 if (connection->le_phy_update_all_phys != 0xffu){ 6522 uint8_t all_phys = connection->le_phy_update_all_phys; 6523 connection->le_phy_update_all_phys = 0xff; 6524 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); 6525 return true; 6526 } 6527 #endif 6528 } 6529 return false; 6530 } 6531 6532 static void hci_run(void){ 6533 6534 // stack state sub statemachines 6535 switch (hci_stack->state) { 6536 case HCI_STATE_INITIALIZING: 6537 hci_initializing_run(); 6538 break; 6539 case HCI_STATE_HALTING: 6540 hci_halting_run(); 6541 break; 6542 case HCI_STATE_FALLING_ASLEEP: 6543 hci_falling_asleep_run(); 6544 break; 6545 default: 6546 break; 6547 } 6548 6549 // allow to run after initialization to working transition 6550 if (hci_stack->state != HCI_STATE_WORKING){ 6551 return; 6552 } 6553 6554 bool done; 6555 6556 // send continuation fragments first, as they block the prepared packet buffer 6557 done = hci_run_acl_fragments(); 6558 if (done) return; 6559 6560 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6561 done = hci_run_iso_fragments(); 6562 if (done) return; 6563 #endif 6564 6565 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 6566 // send host num completed packets next as they don't require num_cmd_packets > 0 6567 if (!hci_can_send_comand_packet_transport()) return; 6568 if (hci_stack->host_completed_packets){ 6569 hci_host_num_completed_packets(); 6570 return; 6571 } 6572 #endif 6573 6574 if (!hci_can_send_command_packet_now()) return; 6575 6576 // global/non-connection oriented commands 6577 6578 6579 #ifdef ENABLE_CLASSIC 6580 // general gap classic 6581 done = hci_run_general_gap_classic(); 6582 if (done) return; 6583 #endif 6584 6585 #ifdef ENABLE_BLE 6586 // general gap le 6587 done = hci_run_general_gap_le(); 6588 if (done) return; 6589 6590 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6591 // ISO related tasks, e.g. BIG create/terminate/sync 6592 done = hci_run_iso_tasks(); 6593 if (done) return; 6594 #endif 6595 #endif 6596 6597 // send pending HCI commands 6598 hci_run_general_pending_commands(); 6599 } 6600 6601 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 6602 // house-keeping 6603 6604 #ifdef ENABLE_CLASSIC 6605 bd_addr_t addr; 6606 hci_connection_t * conn; 6607 #endif 6608 #ifdef ENABLE_LE_CENTRAL 6609 uint8_t initiator_filter_policy; 6610 #endif 6611 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6612 uint8_t i; 6613 uint8_t num_cis; 6614 hci_con_handle_t cis_handle; 6615 uint8_t status; 6616 #endif 6617 6618 uint16_t opcode = little_endian_read_16(packet, 0); 6619 switch (opcode) { 6620 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 6621 hci_stack->loopback_mode = packet[3]; 6622 break; 6623 6624 #ifdef ENABLE_CLASSIC 6625 case HCI_OPCODE_HCI_CREATE_CONNECTION: 6626 reverse_bd_addr(&packet[3], addr); 6627 log_info("Create_connection to %s", bd_addr_to_str(addr)); 6628 6629 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 6630 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 6631 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 6632 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 6633 } 6634 6635 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6636 if (!conn) { 6637 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6638 if (!conn) { 6639 // notify client that alloc failed 6640 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 6641 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 6642 } 6643 conn->state = SEND_CREATE_CONNECTION; 6644 conn->role = HCI_ROLE_MASTER; 6645 } 6646 6647 log_info("conn state %u", conn->state); 6648 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 6649 switch (conn->state) { 6650 // if connection active exists 6651 case OPEN: 6652 // and OPEN, emit connection complete command 6653 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 6654 // packet not sent to controller 6655 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6656 case RECEIVED_DISCONNECTION_COMPLETE: 6657 // create connection triggered in disconnect complete event, let's do it now 6658 break; 6659 case SEND_CREATE_CONNECTION: 6660 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 6661 if (hci_classic_operation_active()){ 6662 return ERROR_CODE_SUCCESS; 6663 } 6664 #endif 6665 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 6666 break; 6667 default: 6668 // otherwise, just ignore as it is already in the open process 6669 // packet not sent to controller 6670 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6671 } 6672 conn->state = SENT_CREATE_CONNECTION; 6673 6674 // track outgoing connection 6675 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 6676 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 6677 break; 6678 6679 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 6680 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 6681 // setup_synchronous_connection? Voice setting at offset 22 6682 // TODO: compare to current setting if sco connection already active 6683 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 6684 break; 6685 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 6686 // accept_synchronous_connection? Voice setting at offset 18 6687 // TODO: compare to current setting if sco connection already active 6688 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 6689 // track outgoing connection 6690 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 6691 reverse_bd_addr(&packet[3], hci_stack->outgoing_addr); 6692 break; 6693 #endif 6694 #endif 6695 6696 #ifdef ENABLE_BLE 6697 #ifdef ENABLE_LE_CENTRAL 6698 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 6699 // white list used? 6700 initiator_filter_policy = packet[7]; 6701 switch (initiator_filter_policy) { 6702 case 0: 6703 // whitelist not used 6704 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 6705 break; 6706 case 1: 6707 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 6708 break; 6709 default: 6710 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 6711 break; 6712 } 6713 // track outgoing connection 6714 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer addres type 6715 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 6716 break; 6717 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 6718 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 6719 break; 6720 #endif 6721 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6722 #ifdef ENABLE_LE_CENTRAL 6723 case HCI_OPCODE_HCI_LE_CREATE_CIS: 6724 status = ERROR_CODE_SUCCESS; 6725 num_cis = packet[3]; 6726 // setup hci_iso_streams 6727 for (i=0;i<num_cis;i++){ 6728 cis_handle = (hci_con_handle_t) little_endian_read_16(packet, 4 + (4 * i)); 6729 status = hci_iso_stream_create(cis_handle, 0xff); 6730 if (status != ERROR_CODE_SUCCESS) { 6731 break; 6732 } 6733 } 6734 // free structs on error 6735 if (status != ERROR_CODE_SUCCESS){ 6736 hci_iso_stream_requested_finalize(0xff); 6737 return status; 6738 } 6739 break; 6740 #endif /* ENABLE_LE_CENTRAL */ 6741 #ifdef ENABLE_LE_PERIPHERAL 6742 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 6743 cis_handle = (hci_con_handle_t) little_endian_read_16(packet, 3); 6744 status = hci_iso_stream_create(cis_handle, 0xff); 6745 if (status != ERROR_CODE_SUCCESS){ 6746 return status; 6747 } 6748 break; 6749 #endif /* ENABLE_LE_PERIPHERAL */ 6750 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6751 #endif /* ENABLE_BLE */ 6752 default: 6753 break; 6754 } 6755 6756 hci_stack->num_cmd_packets--; 6757 6758 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 6759 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 6760 if (err != 0){ 6761 return ERROR_CODE_HARDWARE_FAILURE; 6762 } 6763 return ERROR_CODE_SUCCESS; 6764 } 6765 6766 // disconnect because of security block 6767 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 6768 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6769 if (!connection) return; 6770 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 6771 } 6772 6773 6774 // Configure Secure Simple Pairing 6775 6776 #ifdef ENABLE_CLASSIC 6777 6778 // enable will enable SSP during init 6779 void gap_ssp_set_enable(int enable){ 6780 hci_stack->ssp_enable = enable; 6781 } 6782 6783 static int hci_local_ssp_activated(void){ 6784 return gap_ssp_supported() && hci_stack->ssp_enable; 6785 } 6786 6787 // if set, BTstack will respond to io capability request using authentication requirement 6788 void gap_ssp_set_io_capability(int io_capability){ 6789 hci_stack->ssp_io_capability = io_capability; 6790 } 6791 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 6792 hci_stack->ssp_authentication_requirement = authentication_requirement; 6793 } 6794 6795 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 6796 void gap_ssp_set_auto_accept(int auto_accept){ 6797 hci_stack->ssp_auto_accept = auto_accept; 6798 } 6799 6800 void gap_secure_connections_enable(bool enable){ 6801 hci_stack->secure_connections_enable = enable; 6802 } 6803 bool gap_secure_connections_active(void){ 6804 return hci_stack->secure_connections_active; 6805 } 6806 6807 #endif 6808 6809 // va_list part of hci_send_cmd 6810 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 6811 if (!hci_can_send_command_packet_now()){ 6812 log_error("hci_send_cmd called but cannot send packet now"); 6813 return ERROR_CODE_COMMAND_DISALLOWED; 6814 } 6815 6816 // for HCI INITIALIZATION 6817 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 6818 hci_stack->last_cmd_opcode = cmd->opcode; 6819 6820 hci_reserve_packet_buffer(); 6821 uint8_t * packet = hci_stack->hci_packet_buffer; 6822 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 6823 uint8_t status = hci_send_cmd_packet(packet, size); 6824 6825 // release packet buffer on error or for synchronous transport implementations 6826 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 6827 hci_release_packet_buffer(); 6828 hci_emit_transport_packet_sent(); 6829 } 6830 6831 return status; 6832 } 6833 6834 /** 6835 * pre: numcmds >= 0 - it's allowed to send a command to the controller 6836 */ 6837 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 6838 va_list argptr; 6839 va_start(argptr, cmd); 6840 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 6841 va_end(argptr); 6842 return status; 6843 } 6844 6845 // Create various non-HCI events. 6846 // TODO: generalize, use table similar to hci_create_command 6847 6848 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 6849 // dump packet 6850 if (dump) { 6851 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 6852 } 6853 6854 // dispatch to all event handlers 6855 btstack_linked_list_iterator_t it; 6856 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 6857 while (btstack_linked_list_iterator_has_next(&it)){ 6858 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 6859 entry->callback(HCI_EVENT_PACKET, 0, event, size); 6860 } 6861 } 6862 6863 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 6864 if (!hci_stack->acl_packet_handler) return; 6865 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 6866 } 6867 6868 #ifdef ENABLE_CLASSIC 6869 static void hci_notify_if_sco_can_send_now(void){ 6870 // notify SCO sender if waiting 6871 if (!hci_stack->sco_waiting_for_can_send_now) return; 6872 if (hci_can_send_sco_packet_now()){ 6873 hci_stack->sco_waiting_for_can_send_now = 0; 6874 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 6875 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 6876 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 6877 } 6878 } 6879 6880 // parsing end emitting has been merged to reduce code size 6881 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 6882 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 6883 6884 uint8_t * eir_data; 6885 ad_context_t context; 6886 const uint8_t * name; 6887 uint8_t name_len; 6888 6889 if (size < 3) return; 6890 6891 int event_type = hci_event_packet_get_type(packet); 6892 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 6893 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 6894 6895 switch (event_type){ 6896 case HCI_EVENT_INQUIRY_RESULT: 6897 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6898 if (size != (3 + (num_responses * 14))) return; 6899 break; 6900 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 6901 if (size != 257) return; 6902 if (num_responses != 1) return; 6903 break; 6904 default: 6905 return; 6906 } 6907 6908 // event[1] is set at the end 6909 int i; 6910 for (i=0; i<num_responses;i++){ 6911 memset(event, 0, sizeof(event)); 6912 event[0] = GAP_EVENT_INQUIRY_RESULT; 6913 uint8_t event_size = 27; // if name is not set by EIR 6914 6915 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 6916 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 6917 (void)memcpy(&event[9], 6918 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 6919 3); // class of device 6920 (void)memcpy(&event[12], 6921 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 6922 2); // clock offset 6923 6924 switch (event_type){ 6925 case HCI_EVENT_INQUIRY_RESULT: 6926 // 14,15,16,17 = 0, size 18 6927 break; 6928 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6929 event[14] = 1; 6930 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 6931 // 16,17 = 0, size 18 6932 break; 6933 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 6934 event[14] = 1; 6935 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 6936 // EIR packets only contain a single inquiry response 6937 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 6938 name = NULL; 6939 // Iterate over EIR data 6940 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 6941 uint8_t data_type = ad_iterator_get_data_type(&context); 6942 uint8_t data_size = ad_iterator_get_data_len(&context); 6943 const uint8_t * data = ad_iterator_get_data(&context); 6944 // Prefer Complete Local Name over Shortened Local Name 6945 switch (data_type){ 6946 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 6947 if (name) continue; 6948 /* fall through */ 6949 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 6950 name = data; 6951 name_len = data_size; 6952 break; 6953 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 6954 if (data_size != 8) break; 6955 event[16] = 1; 6956 memcpy(&event[17], data, 8); 6957 break; 6958 default: 6959 break; 6960 } 6961 } 6962 if (name){ 6963 event[25] = 1; 6964 // truncate name if needed 6965 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 6966 event[26] = len; 6967 (void)memcpy(&event[27], name, len); 6968 event_size += len; 6969 } 6970 break; 6971 default: 6972 return; 6973 } 6974 event[1] = event_size - 2; 6975 hci_emit_event(event, event_size, 1); 6976 } 6977 } 6978 #endif 6979 6980 void hci_emit_state(void){ 6981 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 6982 uint8_t event[3]; 6983 event[0] = BTSTACK_EVENT_STATE; 6984 event[1] = sizeof(event) - 2u; 6985 event[2] = hci_stack->state; 6986 hci_emit_event(event, sizeof(event), 1); 6987 } 6988 6989 #ifdef ENABLE_CLASSIC 6990 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 6991 uint8_t event[13]; 6992 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 6993 event[1] = sizeof(event) - 2; 6994 event[2] = status; 6995 little_endian_store_16(event, 3, con_handle); 6996 reverse_bd_addr(address, &event[5]); 6997 event[11] = 1; // ACL connection 6998 event[12] = 0; // encryption disabled 6999 hci_emit_event(event, sizeof(event), 1); 7000 } 7001 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7002 if (disable_l2cap_timeouts) return; 7003 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7004 uint8_t event[4]; 7005 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7006 event[1] = sizeof(event) - 2; 7007 little_endian_store_16(event, 2, conn->con_handle); 7008 hci_emit_event(event, sizeof(event), 1); 7009 } 7010 #endif 7011 7012 #ifdef ENABLE_BLE 7013 #ifdef ENABLE_LE_CENTRAL 7014 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){ 7015 uint8_t event[21]; 7016 event[0] = HCI_EVENT_LE_META; 7017 event[1] = sizeof(event) - 2u; 7018 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7019 event[3] = status; 7020 little_endian_store_16(event, 4, con_handle); 7021 event[6] = 0; // TODO: role 7022 event[7] = address_type; 7023 reverse_bd_addr(address, &event[8]); 7024 little_endian_store_16(event, 14, 0); // interval 7025 little_endian_store_16(event, 16, 0); // latency 7026 little_endian_store_16(event, 18, 0); // supervision timeout 7027 event[20] = 0; // master clock accuracy 7028 hci_emit_event(event, sizeof(event), 1); 7029 } 7030 #endif 7031 #endif 7032 7033 static void hci_emit_transport_packet_sent(void){ 7034 // notify upper stack that it might be possible to send again 7035 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7036 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7037 } 7038 7039 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7040 uint8_t event[6]; 7041 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7042 event[1] = sizeof(event) - 2u; 7043 event[2] = 0; // status = OK 7044 little_endian_store_16(event, 3, con_handle); 7045 event[5] = reason; 7046 hci_emit_event(event, sizeof(event), 1); 7047 } 7048 7049 static void hci_emit_nr_connections_changed(void){ 7050 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7051 uint8_t event[3]; 7052 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7053 event[1] = sizeof(event) - 2u; 7054 event[2] = nr_hci_connections(); 7055 hci_emit_event(event, sizeof(event), 1); 7056 } 7057 7058 static void hci_emit_hci_open_failed(void){ 7059 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7060 uint8_t event[2]; 7061 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7062 event[1] = sizeof(event) - 2u; 7063 hci_emit_event(event, sizeof(event), 1); 7064 } 7065 7066 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7067 log_info("hci_emit_dedicated_bonding_result %u ", status); 7068 uint8_t event[9]; 7069 int pos = 0; 7070 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7071 event[pos++] = sizeof(event) - 2u; 7072 event[pos++] = status; 7073 reverse_bd_addr(address, &event[pos]); 7074 hci_emit_event(event, sizeof(event), 1); 7075 } 7076 7077 7078 #ifdef ENABLE_CLASSIC 7079 7080 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7081 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7082 uint8_t event[5]; 7083 int pos = 0; 7084 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7085 event[pos++] = sizeof(event) - 2; 7086 little_endian_store_16(event, 2, con_handle); 7087 pos += 2; 7088 event[pos++] = level; 7089 hci_emit_event(event, sizeof(event), 1); 7090 } 7091 7092 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7093 if (!connection) return LEVEL_0; 7094 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7095 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7096 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7097 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7098 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7099 // LEVEL 4 always requires 128 bit encrytion key size 7100 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7101 security_level = LEVEL_3; 7102 } 7103 return security_level; 7104 } 7105 7106 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7107 uint8_t event[4]; 7108 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7109 event[1] = sizeof(event) - 2; 7110 event[2] = discoverable; 7111 event[3] = connectable; 7112 hci_emit_event(event, sizeof(event), 1); 7113 } 7114 7115 // query if remote side supports eSCO 7116 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7117 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7118 if (!connection) return false; 7119 return (connection->remote_supported_features[0] & 1) != 0; 7120 } 7121 7122 static bool hci_ssp_supported(hci_connection_t * connection){ 7123 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7124 return (connection->bonding_flags & mask) == mask; 7125 } 7126 7127 // query if remote side supports SSP 7128 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7129 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7130 if (!connection) return false; 7131 return hci_ssp_supported(connection) ? 1 : 0; 7132 } 7133 7134 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7135 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7136 } 7137 7138 /** 7139 * Check if remote supported features query has completed 7140 */ 7141 bool hci_remote_features_available(hci_con_handle_t handle){ 7142 hci_connection_t * connection = hci_connection_for_handle(handle); 7143 if (!connection) return false; 7144 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7145 } 7146 7147 /** 7148 * Trigger remote supported features query 7149 */ 7150 7151 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7152 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7153 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7154 } 7155 } 7156 7157 void hci_remote_features_query(hci_con_handle_t con_handle){ 7158 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7159 if (!connection) return; 7160 hci_trigger_remote_features_for_connection(connection); 7161 hci_run(); 7162 } 7163 7164 // GAP API 7165 /** 7166 * @bbrief enable/disable bonding. default is enabled 7167 * @praram enabled 7168 */ 7169 void gap_set_bondable_mode(int enable){ 7170 hci_stack->bondable = enable ? 1 : 0; 7171 } 7172 /** 7173 * @brief Get bondable mode. 7174 * @return 1 if bondable 7175 */ 7176 int gap_get_bondable_mode(void){ 7177 return hci_stack->bondable; 7178 } 7179 7180 /** 7181 * @brief map link keys to security levels 7182 */ 7183 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7184 switch (link_key_type){ 7185 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7186 return LEVEL_4; 7187 case COMBINATION_KEY: 7188 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7189 return LEVEL_3; 7190 default: 7191 return LEVEL_2; 7192 } 7193 } 7194 7195 /** 7196 * @brief map link keys to secure connection yes/no 7197 */ 7198 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7199 switch (link_key_type){ 7200 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7201 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7202 return true; 7203 default: 7204 return false; 7205 } 7206 } 7207 7208 /** 7209 * @brief map link keys to authenticated 7210 */ 7211 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7212 switch (link_key_type){ 7213 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7214 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7215 return true; 7216 default: 7217 return false; 7218 } 7219 } 7220 7221 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7222 log_info("gap_mitm_protection_required_for_security_level %u", level); 7223 return level > LEVEL_2; 7224 } 7225 7226 /** 7227 * @brief get current security level 7228 */ 7229 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7230 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7231 if (!connection) return LEVEL_0; 7232 return gap_security_level_for_connection(connection); 7233 } 7234 7235 /** 7236 * @brief request connection to device to 7237 * @result GAP_AUTHENTICATION_RESULT 7238 */ 7239 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7240 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7241 if (!connection){ 7242 hci_emit_security_level(con_handle, LEVEL_0); 7243 return; 7244 } 7245 7246 btstack_assert(hci_is_le_connection(connection) == false); 7247 7248 // 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) 7249 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7250 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7251 requested_level = LEVEL_4; 7252 } 7253 7254 gap_security_level_t current_level = gap_security_level(con_handle); 7255 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7256 requested_level, connection->requested_security_level, current_level); 7257 7258 // authentication active if authentication request was sent or planned level > 0 7259 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7260 if (authentication_active){ 7261 // authentication already active 7262 if (connection->requested_security_level < requested_level){ 7263 // increase requested level as new level is higher 7264 // TODO: handle re-authentication when done 7265 connection->requested_security_level = requested_level; 7266 } 7267 } else { 7268 // no request active, notify if security sufficient 7269 if (requested_level <= current_level){ 7270 hci_emit_security_level(con_handle, current_level); 7271 return; 7272 } 7273 7274 // store request 7275 connection->requested_security_level = requested_level; 7276 7277 // start to authenticate connection 7278 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7279 7280 // request remote features if not already active, also trigger hci_run 7281 hci_remote_features_query(con_handle); 7282 } 7283 } 7284 7285 /** 7286 * @brief start dedicated bonding with device. disconnect after bonding 7287 * @param device 7288 * @param request MITM protection 7289 * @result GAP_DEDICATED_BONDING_COMPLETE 7290 */ 7291 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7292 7293 // create connection state machine 7294 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7295 7296 if (!connection){ 7297 return BTSTACK_MEMORY_ALLOC_FAILED; 7298 } 7299 7300 // delete linkn key 7301 gap_drop_link_key_for_bd_addr(device); 7302 7303 // configure LEVEL_2/3, dedicated bonding 7304 connection->state = SEND_CREATE_CONNECTION; 7305 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7306 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7307 connection->bonding_flags = BONDING_DEDICATED; 7308 7309 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7310 7311 // handle: connnection failure (connection complete != ok) 7312 // handle: authentication failure 7313 // handle: disconnect on done 7314 7315 hci_run(); 7316 7317 return 0; 7318 } 7319 7320 void gap_set_local_name(const char * local_name){ 7321 hci_stack->local_name = local_name; 7322 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7323 // also update EIR if not set by user 7324 if (hci_stack->eir_data == NULL){ 7325 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7326 } 7327 hci_run(); 7328 } 7329 #endif 7330 7331 7332 #ifdef ENABLE_BLE 7333 7334 #ifdef ENABLE_LE_CENTRAL 7335 void gap_start_scan(void){ 7336 hci_stack->le_scanning_enabled = true; 7337 hci_run(); 7338 } 7339 7340 void gap_stop_scan(void){ 7341 hci_stack->le_scanning_enabled = false; 7342 hci_run(); 7343 } 7344 7345 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7346 hci_stack->le_scan_type = scan_type; 7347 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7348 hci_stack->le_scan_interval = scan_interval; 7349 hci_stack->le_scan_window = scan_window; 7350 hci_stack->le_scanning_param_update = true; 7351 hci_run(); 7352 } 7353 7354 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7355 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 7356 } 7357 7358 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 7359 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 7360 if (!conn){ 7361 // disallow if le connection is already outgoing 7362 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7363 log_error("le connection already active"); 7364 return ERROR_CODE_COMMAND_DISALLOWED; 7365 } 7366 7367 log_info("gap_connect: no connection exists yet, creating context"); 7368 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 7369 if (!conn){ 7370 // notify client that alloc failed 7371 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7372 log_info("gap_connect: failed to alloc hci_connection_t"); 7373 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 7374 } 7375 7376 // set le connecting state 7377 if (hci_is_le_connection_type(addr_type)){ 7378 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 7379 } 7380 7381 conn->state = SEND_CREATE_CONNECTION; 7382 log_info("gap_connect: send create connection next"); 7383 hci_run(); 7384 return ERROR_CODE_SUCCESS; 7385 } 7386 7387 if (!hci_is_le_connection(conn) || 7388 (conn->state == SEND_CREATE_CONNECTION) || 7389 (conn->state == SENT_CREATE_CONNECTION)) { 7390 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 7391 log_error("gap_connect: classic connection or connect is already being created"); 7392 return GATT_CLIENT_IN_WRONG_STATE; 7393 } 7394 7395 // check if connection was just disconnected 7396 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7397 log_info("gap_connect: send create connection (again)"); 7398 conn->state = SEND_CREATE_CONNECTION; 7399 hci_run(); 7400 return ERROR_CODE_SUCCESS; 7401 } 7402 7403 log_info("gap_connect: context exists with state %u", conn->state); 7404 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 7405 hci_run(); 7406 return ERROR_CODE_SUCCESS; 7407 } 7408 7409 // @assumption: only a single outgoing LE Connection exists 7410 static hci_connection_t * gap_get_outgoing_connection(void){ 7411 btstack_linked_item_t *it; 7412 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7413 hci_connection_t * conn = (hci_connection_t *) it; 7414 if (!hci_is_le_connection(conn)) continue; 7415 switch (conn->state){ 7416 case SEND_CREATE_CONNECTION: 7417 case SENT_CREATE_CONNECTION: 7418 case SENT_CANCEL_CONNECTION: 7419 return conn; 7420 default: 7421 break; 7422 }; 7423 } 7424 return NULL; 7425 } 7426 7427 uint8_t gap_connect_cancel(void){ 7428 hci_connection_t * conn; 7429 switch (hci_stack->le_connecting_request){ 7430 case LE_CONNECTING_IDLE: 7431 break; 7432 case LE_CONNECTING_WHITELIST: 7433 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7434 hci_run(); 7435 break; 7436 case LE_CONNECTING_DIRECT: 7437 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7438 conn = gap_get_outgoing_connection(); 7439 if (conn == NULL){ 7440 hci_run(); 7441 } else { 7442 switch (conn->state){ 7443 case SEND_CREATE_CONNECTION: 7444 // skip sending create connection and emit event instead 7445 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 7446 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 7447 btstack_memory_hci_connection_free( conn ); 7448 break; 7449 case SENT_CREATE_CONNECTION: 7450 // request to send cancel connection 7451 conn->state = SEND_CANCEL_CONNECTION; 7452 hci_run(); 7453 break; 7454 default: 7455 break; 7456 } 7457 } 7458 break; 7459 default: 7460 btstack_unreachable(); 7461 break; 7462 } 7463 return ERROR_CODE_SUCCESS; 7464 } 7465 7466 /** 7467 * @brief Set connection parameters for outgoing connections 7468 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 7469 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 7470 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 7471 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 7472 * @param conn_latency, default: 4 7473 * @param supervision_timeout (unit: 10ms), default: 720 ms 7474 * @param min_ce_length (unit: 0.625ms), default: 10 ms 7475 * @param max_ce_length (unit: 0.625ms), default: 30 ms 7476 */ 7477 7478 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 7479 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 7480 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 7481 hci_stack->le_connection_scan_interval = conn_scan_interval; 7482 hci_stack->le_connection_scan_window = conn_scan_window; 7483 hci_stack->le_connection_interval_min = conn_interval_min; 7484 hci_stack->le_connection_interval_max = conn_interval_max; 7485 hci_stack->le_connection_latency = conn_latency; 7486 hci_stack->le_supervision_timeout = supervision_timeout; 7487 hci_stack->le_minimum_ce_length = min_ce_length; 7488 hci_stack->le_maximum_ce_length = max_ce_length; 7489 } 7490 #endif 7491 7492 /** 7493 * @brief Updates the connection parameters for a given LE connection 7494 * @param handle 7495 * @param conn_interval_min (unit: 1.25ms) 7496 * @param conn_interval_max (unit: 1.25ms) 7497 * @param conn_latency 7498 * @param supervision_timeout (unit: 10ms) 7499 * @return 0 if ok 7500 */ 7501 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7502 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7503 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7504 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7505 connection->le_conn_interval_min = conn_interval_min; 7506 connection->le_conn_interval_max = conn_interval_max; 7507 connection->le_conn_latency = conn_latency; 7508 connection->le_supervision_timeout = supervision_timeout; 7509 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 7510 hci_run(); 7511 return 0; 7512 } 7513 7514 /** 7515 * @brief Request an update of the connection parameter for a given LE connection 7516 * @param handle 7517 * @param conn_interval_min (unit: 1.25ms) 7518 * @param conn_interval_max (unit: 1.25ms) 7519 * @param conn_latency 7520 * @param supervision_timeout (unit: 10ms) 7521 * @return 0 if ok 7522 */ 7523 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7524 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7525 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7526 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7527 connection->le_conn_interval_min = conn_interval_min; 7528 connection->le_conn_interval_max = conn_interval_max; 7529 connection->le_conn_latency = conn_latency; 7530 connection->le_supervision_timeout = supervision_timeout; 7531 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 7532 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 7533 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 7534 return 0; 7535 } 7536 7537 #ifdef ENABLE_LE_PERIPHERAL 7538 7539 /** 7540 * @brief Set Advertisement Data 7541 * @param advertising_data_length 7542 * @param advertising_data (max 31 octets) 7543 * @note data is not copied, pointer has to stay valid 7544 */ 7545 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 7546 hci_stack->le_advertisements_data_len = advertising_data_length; 7547 hci_stack->le_advertisements_data = advertising_data; 7548 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7549 hci_run(); 7550 } 7551 7552 /** 7553 * @brief Set Scan Response Data 7554 * @param advertising_data_length 7555 * @param advertising_data (max 31 octets) 7556 * @note data is not copied, pointer has to stay valid 7557 */ 7558 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 7559 hci_stack->le_scan_response_data_len = scan_response_data_length; 7560 hci_stack->le_scan_response_data = scan_response_data; 7561 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7562 hci_run(); 7563 } 7564 7565 /** 7566 * @brief Set Advertisement Parameters 7567 * @param adv_int_min 7568 * @param adv_int_max 7569 * @param adv_type 7570 * @param direct_address_type 7571 * @param direct_address 7572 * @param channel_map 7573 * @param filter_policy 7574 * 7575 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 7576 */ 7577 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 7578 uint8_t direct_address_typ, bd_addr_t direct_address, 7579 uint8_t channel_map, uint8_t filter_policy) { 7580 7581 hci_stack->le_advertisements_interval_min = adv_int_min; 7582 hci_stack->le_advertisements_interval_max = adv_int_max; 7583 hci_stack->le_advertisements_type = adv_type; 7584 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 7585 hci_stack->le_advertisements_channel_map = channel_map; 7586 hci_stack->le_advertisements_filter_policy = filter_policy; 7587 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 7588 6); 7589 7590 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7591 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 7592 hci_run(); 7593 } 7594 7595 /** 7596 * @brief Enable/Disable Advertisements 7597 * @param enabled 7598 */ 7599 void gap_advertisements_enable(int enabled){ 7600 if (enabled == 0){ 7601 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7602 } else { 7603 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 7604 } 7605 hci_update_advertisements_enabled_for_current_roles(); 7606 hci_run(); 7607 } 7608 7609 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7610 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 7611 btstack_linked_list_iterator_t it; 7612 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 7613 while (btstack_linked_list_iterator_has_next(&it)){ 7614 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 7615 if ( item->advertising_handle == advertising_handle ) { 7616 return item; 7617 } 7618 } 7619 return NULL; 7620 } 7621 7622 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 7623 // find free advertisement handle 7624 uint8_t advertisement_handle; 7625 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 7626 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 7627 } 7628 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7629 // clear 7630 memset(storage, 0, sizeof(le_advertising_set_t)); 7631 // copy params 7632 storage->advertising_handle = advertisement_handle; 7633 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7634 // add to list 7635 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 7636 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7637 *out_advertising_handle = advertisement_handle; 7638 // set tasks and start 7639 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7640 hci_run(); 7641 return ERROR_CODE_SUCCESS; 7642 } 7643 7644 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 7645 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7646 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7647 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7648 // set tasks and start 7649 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7650 hci_run(); 7651 return ERROR_CODE_SUCCESS; 7652 } 7653 7654 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 7655 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7656 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7657 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 7658 return ERROR_CODE_SUCCESS; 7659 } 7660 7661 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 7662 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7663 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7664 memcpy(advertising_set->random_address, random_address, 6); 7665 // set tasks and start 7666 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7667 hci_run(); 7668 return ERROR_CODE_SUCCESS; 7669 } 7670 7671 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 7672 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7673 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7674 advertising_set->adv_data = advertising_data; 7675 advertising_set->adv_data_len = advertising_data_length; 7676 // set tasks and start 7677 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7678 hci_run(); 7679 return ERROR_CODE_SUCCESS; 7680 } 7681 7682 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){ 7683 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7684 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7685 advertising_set->scan_data = scan_response_data; 7686 advertising_set->scan_data_len = scan_response_data_length; 7687 // set tasks and start 7688 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7689 hci_run(); 7690 return ERROR_CODE_SUCCESS; 7691 } 7692 7693 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 7694 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7695 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7696 advertising_set->enable_timeout = timeout; 7697 advertising_set->enable_max_scan_events = num_extended_advertising_events; 7698 // set tasks and start 7699 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 7700 hci_run(); 7701 return ERROR_CODE_SUCCESS; 7702 } 7703 7704 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 7705 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7706 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7707 // set tasks and start 7708 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7709 hci_run(); 7710 return ERROR_CODE_SUCCESS; 7711 } 7712 7713 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 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 // set tasks and start 7717 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 7718 hci_run(); 7719 return ERROR_CODE_SUCCESS; 7720 } 7721 7722 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7723 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_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 // periodic advertising requires neither connectable, scannable, legacy or anonymous 7727 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7728 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 7729 // set tasks and start 7730 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 7731 hci_run(); 7732 return ERROR_CODE_SUCCESS; 7733 } 7734 7735 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 7736 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7737 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7738 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 7739 return ERROR_CODE_SUCCESS; 7740 } 7741 7742 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 7743 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7744 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7745 advertising_set->periodic_data = periodic_data; 7746 advertising_set->periodic_data_len = periodic_data_length; 7747 // set tasks and start 7748 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 7749 hci_run(); 7750 return ERROR_CODE_SUCCESS; 7751 } 7752 7753 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 7754 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7755 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7756 // set tasks and start 7757 advertising_set->periodic_include_adi = include_adi; 7758 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7759 hci_run(); 7760 return ERROR_CODE_SUCCESS; 7761 } 7762 7763 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 7764 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7765 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7766 // set tasks and start 7767 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7768 hci_run(); 7769 return ERROR_CODE_SUCCESS; 7770 } 7771 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 7772 7773 #endif 7774 7775 #endif 7776 7777 void hci_le_set_own_address_type(uint8_t own_address_type){ 7778 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 7779 if (own_address_type == hci_stack->le_own_addr_type) return; 7780 hci_stack->le_own_addr_type = own_address_type; 7781 7782 #ifdef ENABLE_LE_PERIPHERAL 7783 // update advertisement parameters, too 7784 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7785 hci_run(); 7786 #endif 7787 #ifdef ENABLE_LE_CENTRAL 7788 // note: we don't update scan parameters or modify ongoing connection attempts 7789 #endif 7790 } 7791 7792 void hci_le_random_address_set(const bd_addr_t random_address){ 7793 memcpy(hci_stack->le_random_address, random_address, 6); 7794 hci_stack->le_random_address_set = true; 7795 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7796 hci_run(); 7797 } 7798 7799 #endif 7800 7801 uint8_t gap_disconnect(hci_con_handle_t handle){ 7802 hci_connection_t * conn = hci_connection_for_handle(handle); 7803 if (!conn){ 7804 hci_emit_disconnection_complete(handle, 0); 7805 return 0; 7806 } 7807 // ignore if already disconnected 7808 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7809 return 0; 7810 } 7811 conn->state = SEND_DISCONNECT; 7812 hci_run(); 7813 return 0; 7814 } 7815 7816 int gap_read_rssi(hci_con_handle_t con_handle){ 7817 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7818 if (hci_connection == NULL) return 0; 7819 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 7820 hci_run(); 7821 return 1; 7822 } 7823 7824 /** 7825 * @brief Get connection type 7826 * @param con_handle 7827 * @result connection_type 7828 */ 7829 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 7830 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7831 if (!conn) return GAP_CONNECTION_INVALID; 7832 switch (conn->address_type){ 7833 case BD_ADDR_TYPE_LE_PUBLIC: 7834 case BD_ADDR_TYPE_LE_RANDOM: 7835 return GAP_CONNECTION_LE; 7836 case BD_ADDR_TYPE_SCO: 7837 return GAP_CONNECTION_SCO; 7838 case BD_ADDR_TYPE_ACL: 7839 return GAP_CONNECTION_ACL; 7840 default: 7841 return GAP_CONNECTION_INVALID; 7842 } 7843 } 7844 7845 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 7846 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7847 if (!conn) return HCI_ROLE_INVALID; 7848 return (hci_role_t) conn->role; 7849 } 7850 7851 7852 #ifdef ENABLE_CLASSIC 7853 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 7854 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7855 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7856 conn->request_role = role; 7857 hci_run(); 7858 return ERROR_CODE_SUCCESS; 7859 } 7860 #endif 7861 7862 #ifdef ENABLE_BLE 7863 7864 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){ 7865 hci_connection_t * conn = hci_connection_for_handle(con_handle); 7866 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7867 7868 conn->le_phy_update_all_phys = all_phys; 7869 conn->le_phy_update_tx_phys = tx_phys; 7870 conn->le_phy_update_rx_phys = rx_phys; 7871 conn->le_phy_update_phy_options = phy_options; 7872 7873 hci_run(); 7874 7875 return 0; 7876 } 7877 7878 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 7879 // check if already in list 7880 btstack_linked_list_iterator_t it; 7881 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7882 while (btstack_linked_list_iterator_has_next(&it)) { 7883 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 7884 if (entry->address_type != address_type) { 7885 continue; 7886 } 7887 if (memcmp(entry->address, address, 6) != 0) { 7888 continue; 7889 } 7890 // disallow if already scheduled to add 7891 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 7892 return ERROR_CODE_COMMAND_DISALLOWED; 7893 } 7894 // still on controller, but scheduled to remove -> re-add 7895 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 7896 return ERROR_CODE_SUCCESS; 7897 } 7898 // alloc and add to list 7899 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 7900 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 7901 entry->address_type = address_type; 7902 (void)memcpy(entry->address, address, 6); 7903 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 7904 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 7905 return ERROR_CODE_SUCCESS; 7906 } 7907 7908 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 7909 btstack_linked_list_iterator_t it; 7910 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7911 while (btstack_linked_list_iterator_has_next(&it)){ 7912 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 7913 if (entry->address_type != address_type) { 7914 continue; 7915 } 7916 if (memcmp(entry->address, address, 6) != 0) { 7917 continue; 7918 } 7919 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 7920 // remove from controller if already present 7921 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 7922 } else { 7923 // directly remove entry from whitelist 7924 btstack_linked_list_iterator_remove(&it); 7925 btstack_memory_whitelist_entry_free(entry); 7926 } 7927 return ERROR_CODE_SUCCESS; 7928 } 7929 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7930 } 7931 7932 static void hci_whitelist_clear(void){ 7933 btstack_linked_list_iterator_t it; 7934 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7935 while (btstack_linked_list_iterator_has_next(&it)){ 7936 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 7937 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 7938 // remove from controller if already present 7939 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 7940 continue; 7941 } 7942 // directly remove entry from whitelist 7943 btstack_linked_list_iterator_remove(&it); 7944 btstack_memory_whitelist_entry_free(entry); 7945 } 7946 } 7947 7948 // free all entries unconditionally 7949 static void hci_whitelist_free(void){ 7950 btstack_linked_list_iterator_t lit; 7951 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 7952 while (btstack_linked_list_iterator_has_next(&lit)){ 7953 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 7954 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 7955 btstack_memory_whitelist_entry_free(entry); 7956 } 7957 } 7958 7959 /** 7960 * @brief Clear Whitelist 7961 * @return 0 if ok 7962 */ 7963 uint8_t gap_whitelist_clear(void){ 7964 hci_whitelist_clear(); 7965 hci_run(); 7966 return ERROR_CODE_SUCCESS; 7967 } 7968 7969 /** 7970 * @brief Add Device to Whitelist 7971 * @param address_typ 7972 * @param address 7973 * @return 0 if ok 7974 */ 7975 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 7976 uint8_t status = hci_whitelist_add(address_type, address); 7977 if (status){ 7978 return status; 7979 } 7980 hci_run(); 7981 return ERROR_CODE_SUCCESS; 7982 } 7983 7984 /** 7985 * @brief Remove Device from Whitelist 7986 * @param address_typ 7987 * @param address 7988 * @return 0 if ok 7989 */ 7990 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 7991 uint8_t status = hci_whitelist_remove(address_type, address); 7992 if (status){ 7993 return status; 7994 } 7995 hci_run(); 7996 return ERROR_CODE_SUCCESS; 7997 } 7998 7999 #ifdef ENABLE_LE_CENTRAL 8000 /** 8001 * @brief Connect with Whitelist 8002 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8003 * @return - if ok 8004 */ 8005 uint8_t gap_connect_with_whitelist(void){ 8006 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8007 return ERROR_CODE_COMMAND_DISALLOWED; 8008 } 8009 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8010 hci_run(); 8011 return ERROR_CODE_SUCCESS; 8012 } 8013 8014 /** 8015 * @brief Auto Connection Establishment - Start Connecting to device 8016 * @param address_typ 8017 * @param address 8018 * @return 0 if ok 8019 */ 8020 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8021 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8022 return ERROR_CODE_COMMAND_DISALLOWED; 8023 } 8024 8025 uint8_t status = hci_whitelist_add(address_type, address); 8026 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8027 return status; 8028 } 8029 8030 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8031 8032 hci_run(); 8033 return ERROR_CODE_SUCCESS; 8034 } 8035 8036 /** 8037 * @brief Auto Connection Establishment - Stop Connecting to device 8038 * @param address_typ 8039 * @param address 8040 * @return 0 if ok 8041 */ 8042 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8043 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8044 return ERROR_CODE_COMMAND_DISALLOWED; 8045 } 8046 8047 hci_whitelist_remove(address_type, address); 8048 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8049 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8050 } 8051 hci_run(); 8052 return 0; 8053 } 8054 8055 /** 8056 * @brief Auto Connection Establishment - Stop everything 8057 * @note Convenience function to stop all active auto connection attempts 8058 */ 8059 uint8_t gap_auto_connection_stop_all(void){ 8060 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8061 return ERROR_CODE_COMMAND_DISALLOWED; 8062 } 8063 hci_whitelist_clear(); 8064 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8065 hci_run(); 8066 return ERROR_CODE_SUCCESS; 8067 } 8068 8069 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8070 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8071 if (!conn) return 0; 8072 return conn->le_connection_interval; 8073 } 8074 #endif 8075 #endif 8076 8077 #ifdef ENABLE_CLASSIC 8078 /** 8079 * @brief Set Extended Inquiry Response data 8080 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8081 * @note has to be done before stack starts up 8082 */ 8083 void gap_set_extended_inquiry_response(const uint8_t * data){ 8084 hci_stack->eir_data = data; 8085 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8086 hci_run(); 8087 } 8088 8089 /** 8090 * @brief Start GAP Classic Inquiry 8091 * @param duration in 1.28s units 8092 * @return 0 if ok 8093 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8094 */ 8095 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8096 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8097 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8098 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8099 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8100 } 8101 hci_stack->inquiry_state = duration_in_1280ms_units; 8102 hci_stack->inquiry_max_period_length = 0; 8103 hci_stack->inquiry_min_period_length = 0; 8104 hci_run(); 8105 return 0; 8106 } 8107 8108 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8109 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8110 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8111 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8112 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8113 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8114 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8115 8116 hci_stack->inquiry_state = duration; 8117 hci_stack->inquiry_max_period_length = max_period_length; 8118 hci_stack->inquiry_min_period_length = min_period_length; 8119 hci_run(); 8120 return 0; 8121 } 8122 8123 /** 8124 * @brief Stop GAP Classic Inquiry 8125 * @return 0 if ok 8126 */ 8127 int gap_inquiry_stop(void){ 8128 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8129 // emit inquiry complete event, before it even started 8130 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8131 hci_emit_event(event, sizeof(event), 1); 8132 return 0; 8133 } 8134 switch (hci_stack->inquiry_state){ 8135 case GAP_INQUIRY_STATE_ACTIVE: 8136 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8137 hci_run(); 8138 return ERROR_CODE_SUCCESS; 8139 case GAP_INQUIRY_STATE_PERIODIC: 8140 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8141 hci_run(); 8142 return ERROR_CODE_SUCCESS; 8143 default: 8144 return ERROR_CODE_COMMAND_DISALLOWED; 8145 } 8146 } 8147 8148 void gap_inquiry_set_lap(uint32_t lap){ 8149 hci_stack->inquiry_lap = lap; 8150 } 8151 8152 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8153 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8154 hci_stack->inquiry_scan_window = inquiry_scan_window; 8155 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8156 hci_run(); 8157 } 8158 8159 8160 /** 8161 * @brief Remote Name Request 8162 * @param addr 8163 * @param page_scan_repetition_mode 8164 * @param clock_offset only used when bit 15 is set 8165 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8166 */ 8167 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8168 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8169 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8170 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8171 hci_stack->remote_name_clock_offset = clock_offset; 8172 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8173 hci_run(); 8174 return 0; 8175 } 8176 8177 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8178 hci_stack->gap_pairing_state = state; 8179 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8180 hci_run(); 8181 return 0; 8182 } 8183 8184 /** 8185 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8186 * @param addr 8187 * @param pin_data 8188 * @param pin_len 8189 * @return 0 if ok 8190 */ 8191 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8192 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8193 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8194 hci_stack->gap_pairing_pin_len = pin_len; 8195 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8196 } 8197 8198 /** 8199 * @brief Legacy Pairing Pin Code Response 8200 * @param addr 8201 * @param pin 8202 * @return 0 if ok 8203 */ 8204 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8205 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8206 } 8207 8208 /** 8209 * @brief Abort Legacy Pairing 8210 * @param addr 8211 * @param pin 8212 * @return 0 if ok 8213 */ 8214 int gap_pin_code_negative(bd_addr_t addr){ 8215 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8216 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8217 } 8218 8219 /** 8220 * @brief SSP Passkey Response 8221 * @param addr 8222 * @param passkey 8223 * @return 0 if ok 8224 */ 8225 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8226 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8227 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8228 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8229 } 8230 8231 /** 8232 * @brief Abort SSP Passkey Entry/Pairing 8233 * @param addr 8234 * @param pin 8235 * @return 0 if ok 8236 */ 8237 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8238 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8239 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8240 } 8241 8242 /** 8243 * @brief Accept SSP Numeric Comparison 8244 * @param addr 8245 * @param passkey 8246 * @return 0 if ok 8247 */ 8248 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8249 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8250 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8251 } 8252 8253 /** 8254 * @brief Abort SSP Numeric Comparison/Pairing 8255 * @param addr 8256 * @param pin 8257 * @return 0 if ok 8258 */ 8259 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8260 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8261 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8262 } 8263 8264 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8265 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8266 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8267 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8268 connectionSetAuthenticationFlags(conn, flag); 8269 hci_run(); 8270 return ERROR_CODE_SUCCESS; 8271 } 8272 #endif 8273 8274 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8275 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8276 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8277 } 8278 8279 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8280 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8281 } 8282 #endif 8283 8284 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8285 /** 8286 * @brief Report Remote OOB Data 8287 * @param bd_addr 8288 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8289 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8290 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8291 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8292 */ 8293 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){ 8294 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8295 if (connection == NULL) { 8296 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8297 } 8298 connection->classic_oob_c_192 = c_192; 8299 connection->classic_oob_r_192 = r_192; 8300 8301 // ignore P-256 if not supported by us 8302 if (hci_stack->secure_connections_active){ 8303 connection->classic_oob_c_256 = c_256; 8304 connection->classic_oob_r_256 = r_256; 8305 } 8306 8307 return ERROR_CODE_SUCCESS; 8308 } 8309 /** 8310 * @brief Generate new OOB data 8311 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 8312 */ 8313 void gap_ssp_generate_oob_data(void){ 8314 hci_stack->classic_read_local_oob_data = true; 8315 hci_run(); 8316 } 8317 8318 #endif 8319 8320 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 8321 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 8322 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8323 if (connection == NULL) { 8324 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8325 } 8326 8327 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 8328 connection->link_key_type = type; 8329 8330 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 8331 } 8332 8333 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 8334 /** 8335 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 8336 * @param inquiry_mode see bluetooth_defines.h 8337 */ 8338 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 8339 hci_stack->inquiry_mode = inquiry_mode; 8340 } 8341 8342 /** 8343 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 8344 */ 8345 void hci_set_sco_voice_setting(uint16_t voice_setting){ 8346 hci_stack->sco_voice_setting = voice_setting; 8347 } 8348 8349 /** 8350 * @brief Get SCO Voice Setting 8351 * @return current voice setting 8352 */ 8353 uint16_t hci_get_sco_voice_setting(void){ 8354 return hci_stack->sco_voice_setting; 8355 } 8356 8357 static int hci_have_usb_transport(void){ 8358 if (!hci_stack->hci_transport) return 0; 8359 const char * transport_name = hci_stack->hci_transport->name; 8360 if (!transport_name) return 0; 8361 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 8362 } 8363 8364 /** @brief Get SCO packet length for current SCO Voice setting 8365 * @note Using SCO packets of the exact length is required for USB transfer 8366 * @return Length of SCO packets in bytes (not audio frames) 8367 */ 8368 uint16_t hci_get_sco_packet_length(void){ 8369 uint16_t sco_packet_length = 0; 8370 8371 #ifdef ENABLE_SCO_OVER_HCI 8372 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8373 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8374 8375 if (hci_have_usb_transport()){ 8376 // see Core Spec for H2 USB Transfer. 8377 // 3 byte SCO header + 24 bytes per connection 8378 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 8379 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 8380 } else { 8381 // 3 byte SCO header + SCO packet size over the air (60 bytes) 8382 sco_packet_length = 3 + 60 * multiplier; 8383 // assert that it still fits inside an SCO buffer 8384 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 8385 sco_packet_length = 3 + 60; 8386 } 8387 } 8388 #endif 8389 8390 #ifdef HAVE_SCO_TRANSPORT 8391 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8392 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8393 sco_packet_length = 3 + 60 * multiplier; 8394 #endif 8395 return sco_packet_length; 8396 } 8397 8398 /** 8399 * @brief Sets the master/slave policy 8400 * @param policy (0: attempt to become master, 1: let connecting device decide) 8401 */ 8402 void hci_set_master_slave_policy(uint8_t policy){ 8403 hci_stack->master_slave_policy = policy; 8404 } 8405 8406 #endif 8407 8408 HCI_STATE hci_get_state(void){ 8409 return hci_stack->state; 8410 } 8411 8412 #ifdef ENABLE_CLASSIC 8413 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 8414 hci_stack->gap_classic_accept_callback = accept_callback; 8415 } 8416 #endif 8417 8418 /** 8419 * @brief Set callback for Bluetooth Hardware Error 8420 */ 8421 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 8422 hci_stack->hardware_error_callback = fn; 8423 } 8424 8425 void hci_disconnect_all(void){ 8426 btstack_linked_list_iterator_t it; 8427 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8428 while (btstack_linked_list_iterator_has_next(&it)){ 8429 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8430 if (con->state == SENT_DISCONNECT) continue; 8431 con->state = SEND_DISCONNECT; 8432 } 8433 hci_run(); 8434 } 8435 8436 uint16_t hci_get_manufacturer(void){ 8437 return hci_stack->manufacturer; 8438 } 8439 8440 #ifdef ENABLE_BLE 8441 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 8442 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 8443 if (!hci_con) return NULL; 8444 return &hci_con->sm_connection; 8445 } 8446 8447 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 8448 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 8449 #endif 8450 8451 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 8452 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8453 if (hci_connection == NULL) return 0; 8454 if (hci_is_le_connection(hci_connection)){ 8455 #ifdef ENABLE_BLE 8456 sm_connection_t * sm_conn = &hci_connection->sm_connection; 8457 if (sm_conn->sm_connection_encrypted) { 8458 return sm_conn->sm_actual_encryption_key_size; 8459 } 8460 #endif 8461 } else { 8462 #ifdef ENABLE_CLASSIC 8463 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 8464 return hci_connection->encryption_key_size; 8465 } 8466 #endif 8467 } 8468 return 0; 8469 } 8470 8471 bool gap_authenticated(hci_con_handle_t con_handle){ 8472 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8473 if (hci_connection == NULL) return false; 8474 8475 switch (hci_connection->address_type){ 8476 #ifdef ENABLE_BLE 8477 case BD_ADDR_TYPE_LE_PUBLIC: 8478 case BD_ADDR_TYPE_LE_RANDOM: 8479 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 8480 return hci_connection->sm_connection.sm_connection_authenticated != 0; 8481 #endif 8482 #ifdef ENABLE_CLASSIC 8483 case BD_ADDR_TYPE_SCO: 8484 case BD_ADDR_TYPE_ACL: 8485 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 8486 #endif 8487 default: 8488 return false; 8489 } 8490 } 8491 8492 bool gap_secure_connection(hci_con_handle_t con_handle){ 8493 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8494 if (hci_connection == NULL) return 0; 8495 8496 switch (hci_connection->address_type){ 8497 #ifdef ENABLE_BLE 8498 case BD_ADDR_TYPE_LE_PUBLIC: 8499 case BD_ADDR_TYPE_LE_RANDOM: 8500 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 8501 return hci_connection->sm_connection.sm_connection_sc != 0; 8502 #endif 8503 #ifdef ENABLE_CLASSIC 8504 case BD_ADDR_TYPE_SCO: 8505 case BD_ADDR_TYPE_ACL: 8506 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 8507 #endif 8508 default: 8509 return false; 8510 } 8511 } 8512 8513 bool gap_bonded(hci_con_handle_t con_handle){ 8514 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8515 if (hci_connection == NULL) return 0; 8516 8517 #ifdef ENABLE_CLASSIC 8518 link_key_t link_key; 8519 link_key_type_t link_key_type; 8520 #endif 8521 switch (hci_connection->address_type){ 8522 #ifdef ENABLE_BLE 8523 case BD_ADDR_TYPE_LE_PUBLIC: 8524 case BD_ADDR_TYPE_LE_RANDOM: 8525 return hci_connection->sm_connection.sm_le_db_index >= 0; 8526 #endif 8527 #ifdef ENABLE_CLASSIC 8528 case BD_ADDR_TYPE_SCO: 8529 case BD_ADDR_TYPE_ACL: 8530 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 8531 #endif 8532 default: 8533 return false; 8534 } 8535 } 8536 8537 #ifdef ENABLE_BLE 8538 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 8539 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 8540 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 8541 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 8542 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 8543 return sm_conn->sm_connection_authorization_state; 8544 } 8545 #endif 8546 8547 #ifdef ENABLE_CLASSIC 8548 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){ 8549 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8550 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8551 conn->sniff_min_interval = sniff_min_interval; 8552 conn->sniff_max_interval = sniff_max_interval; 8553 conn->sniff_attempt = sniff_attempt; 8554 conn->sniff_timeout = sniff_timeout; 8555 hci_run(); 8556 return 0; 8557 } 8558 8559 /** 8560 * @brief Exit Sniff mode 8561 * @param con_handle 8562 @ @return 0 if ok 8563 */ 8564 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 8565 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8566 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8567 conn->sniff_min_interval = 0xffff; 8568 hci_run(); 8569 return 0; 8570 } 8571 8572 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){ 8573 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8574 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8575 conn->sniff_subrating_max_latency = max_latency; 8576 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 8577 conn->sniff_subrating_min_local_timeout = min_local_timeout; 8578 hci_run(); 8579 return ERROR_CODE_SUCCESS; 8580 } 8581 8582 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){ 8583 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8584 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8585 conn->qos_service_type = service_type; 8586 conn->qos_token_rate = token_rate; 8587 conn->qos_peak_bandwidth = peak_bandwidth; 8588 conn->qos_latency = latency; 8589 conn->qos_delay_variation = delay_variation; 8590 hci_run(); 8591 return ERROR_CODE_SUCCESS; 8592 } 8593 8594 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 8595 hci_stack->new_page_scan_interval = page_scan_interval; 8596 hci_stack->new_page_scan_window = page_scan_window; 8597 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 8598 hci_run(); 8599 } 8600 8601 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 8602 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 8603 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 8604 hci_run(); 8605 } 8606 8607 void gap_set_page_timeout(uint16_t page_timeout){ 8608 hci_stack->page_timeout = page_timeout; 8609 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 8610 hci_run(); 8611 } 8612 8613 #endif 8614 8615 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 8616 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 8617 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8618 if (le_device_db_index >= le_device_db_max_count()) return; 8619 uint8_t offset = le_device_db_index >> 3; 8620 uint8_t mask = 1 << (le_device_db_index & 7); 8621 hci_stack->le_resolving_list_add_entries[offset] |= mask; 8622 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8623 // note: go back to remove entries, otherwise, a remove + add will skip the add 8624 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8625 } 8626 } 8627 8628 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 8629 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8630 if (le_device_db_index >= le_device_db_max_count()) return; 8631 uint8_t offset = le_device_db_index >> 3; 8632 uint8_t mask = 1 << (le_device_db_index & 7); 8633 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 8634 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8635 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8636 } 8637 } 8638 8639 uint8_t gap_load_resolving_list_from_le_device_db(void){ 8640 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 8641 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 8642 } 8643 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 8644 // restart le resolving list update 8645 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 8646 } 8647 return ERROR_CODE_SUCCESS; 8648 } 8649 #endif 8650 8651 #ifdef ENABLE_BLE 8652 #ifdef ENABLE_LE_CENTRAL 8653 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8654 8655 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8656 // check if already in list 8657 btstack_linked_list_iterator_t it; 8658 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8659 while (btstack_linked_list_iterator_has_next(&it)) { 8660 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 8661 if (entry->sid != advertising_sid) { 8662 continue; 8663 } 8664 if (entry->address_type != address_type) { 8665 continue; 8666 } 8667 if (memcmp(entry->address, address, 6) != 0) { 8668 continue; 8669 } 8670 // disallow if already scheduled to add 8671 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 8672 return ERROR_CODE_COMMAND_DISALLOWED; 8673 } 8674 // still on controller, but scheduled to remove -> re-add 8675 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8676 return ERROR_CODE_SUCCESS; 8677 } 8678 // alloc and add to list 8679 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 8680 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8681 entry->sid = advertising_sid; 8682 entry->address_type = address_type; 8683 (void)memcpy(entry->address, address, 6); 8684 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8685 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 8686 return ERROR_CODE_SUCCESS; 8687 } 8688 8689 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8690 btstack_linked_list_iterator_t it; 8691 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8692 while (btstack_linked_list_iterator_has_next(&it)){ 8693 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8694 if (entry->sid != advertising_sid) { 8695 continue; 8696 } 8697 if (entry->address_type != address_type) { 8698 continue; 8699 } 8700 if (memcmp(entry->address, address, 6) != 0) { 8701 continue; 8702 } 8703 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8704 // remove from controller if already present 8705 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8706 } else { 8707 // directly remove entry from whitelist 8708 btstack_linked_list_iterator_remove(&it); 8709 btstack_memory_periodic_advertiser_list_entry_free(entry); 8710 } 8711 return ERROR_CODE_SUCCESS; 8712 } 8713 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8714 } 8715 8716 static void hci_periodic_advertiser_list_clear(void){ 8717 btstack_linked_list_iterator_t it; 8718 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8719 while (btstack_linked_list_iterator_has_next(&it)){ 8720 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8721 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8722 // remove from controller if already present 8723 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8724 continue; 8725 } 8726 // directly remove entry from whitelist 8727 btstack_linked_list_iterator_remove(&it); 8728 btstack_memory_periodic_advertiser_list_entry_free(entry); 8729 } 8730 } 8731 8732 // free all entries unconditionally 8733 static void hci_periodic_advertiser_list_free(void){ 8734 btstack_linked_list_iterator_t lit; 8735 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 8736 while (btstack_linked_list_iterator_has_next(&lit)){ 8737 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 8738 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 8739 btstack_memory_periodic_advertiser_list_entry_free(entry); 8740 } 8741 } 8742 8743 uint8_t gap_periodic_advertiser_list_clear(void){ 8744 hci_periodic_advertiser_list_clear(); 8745 hci_run(); 8746 return ERROR_CODE_SUCCESS; 8747 } 8748 8749 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8750 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 8751 if (status){ 8752 return status; 8753 } 8754 hci_run(); 8755 return ERROR_CODE_SUCCESS; 8756 } 8757 8758 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8759 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 8760 if (status){ 8761 return status; 8762 } 8763 hci_run(); 8764 return ERROR_CODE_SUCCESS; 8765 } 8766 8767 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 8768 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 8769 // abort if already active 8770 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 8771 return ERROR_CODE_COMMAND_DISALLOWED; 8772 } 8773 // store request 8774 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 8775 hci_stack->le_periodic_sync_options = options; 8776 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 8777 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 8778 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 8779 hci_stack->le_periodic_sync_skip = skip; 8780 hci_stack->le_periodic_sync_timeout = sync_timeout; 8781 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 8782 8783 hci_run(); 8784 return ERROR_CODE_SUCCESS; 8785 } 8786 8787 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 8788 // abort if not requested 8789 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 8790 return ERROR_CODE_COMMAND_DISALLOWED; 8791 } 8792 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 8793 hci_run(); 8794 return ERROR_CODE_SUCCESS; 8795 } 8796 8797 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 8798 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 8799 return ERROR_CODE_COMMAND_DISALLOWED; 8800 } 8801 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 8802 hci_run(); 8803 return ERROR_CODE_SUCCESS; 8804 } 8805 8806 #endif 8807 #endif 8808 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 8809 static uint8_t hci_iso_stream_create(hci_con_handle_t con_handle, uint8_t big_handle) { 8810 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 8811 if (iso_stream == NULL){ 8812 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8813 } else { 8814 iso_stream->state = HCI_ISO_STREAM_STATE_REQUESTED; 8815 iso_stream->con_handle = con_handle; 8816 iso_stream->big_handle = big_handle; 8817 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 8818 return ERROR_CODE_SUCCESS; 8819 } 8820 } 8821 8822 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 8823 btstack_linked_list_iterator_t it; 8824 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8825 while (btstack_linked_list_iterator_has_next(&it)){ 8826 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8827 if (iso_stream->con_handle == con_handle ) { 8828 return iso_stream; 8829 } 8830 } 8831 return NULL; 8832 } 8833 8834 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 8835 log_info("hci_iso_stream_finalize con_handle 0x%04x, big_handle 0x%02x", iso_stream->con_handle, iso_stream->big_handle); 8836 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 8837 btstack_memory_hci_iso_stream_free(iso_stream); 8838 } 8839 8840 static void hci_iso_stream_requested_finalize(uint8_t big_handle) { 8841 btstack_linked_list_iterator_t it; 8842 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8843 while (btstack_linked_list_iterator_has_next(&it)){ 8844 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8845 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 8846 (iso_stream->big_handle == big_handle)){ 8847 btstack_linked_list_iterator_remove(&it); 8848 btstack_memory_hci_iso_stream_free(iso_stream); 8849 } 8850 } 8851 } 8852 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 8853 btstack_linked_list_iterator_t it; 8854 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8855 while (btstack_linked_list_iterator_has_next(&it)){ 8856 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8857 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 8858 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 8859 } 8860 } 8861 } 8862 8863 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 8864 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 8865 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 8866 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 8867 return (sdu_len_offset + 2 + sdu_len) == size; 8868 } 8869 8870 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 8871 if (hci_stack->iso_packet_handler == NULL) { 8872 return; 8873 } 8874 if (size < 4) { 8875 return; 8876 } 8877 8878 // parse header 8879 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 8880 uint16_t iso_data_len = little_endian_read_16(packet, 2); 8881 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 8882 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 8883 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 8884 8885 // assert packet is complete 8886 if ((iso_data_len + 4u) != size){ 8887 return; 8888 } 8889 8890 if ((pb_flag & 0x01) == 0){ 8891 if (pb_flag == 0x02){ 8892 // The ISO_Data_Load field contains a header and a complete SDU. 8893 if (hci_iso_sdu_complete(packet, size)) { 8894 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 8895 } 8896 } else { 8897 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 8898 if (iso_stream == NULL){ 8899 return; 8900 } 8901 if (size > HCI_ISO_PAYLOAD_SIZE){ 8902 return; 8903 } 8904 memcpy(iso_stream->reassembly_buffer, packet, size); 8905 // fix pb_flag 8906 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 8907 iso_stream->reassembly_pos = size; 8908 } 8909 } else { 8910 // iso_data_load contains continuation or last fragment of an SDU 8911 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 8912 if (ts_flag != 0){ 8913 return; 8914 } 8915 // append fragment 8916 if (iso_stream == NULL){ 8917 return; 8918 } 8919 if (iso_stream->reassembly_pos == 0){ 8920 return; 8921 } 8922 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 8923 // reset reassembly buffer 8924 iso_stream->reassembly_pos = 0; 8925 return; 8926 } 8927 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 8928 iso_stream->reassembly_pos += iso_data_len; 8929 8930 // deliver if last fragment and SDU complete 8931 if (pb_flag == 0x03){ 8932 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 8933 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 8934 } 8935 iso_stream->reassembly_pos = 0; 8936 } 8937 } 8938 } 8939 8940 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 8941 uint8_t event [6 + (MAX_NR_BIS * 2)]; 8942 uint16_t pos = 0; 8943 event[pos++] = HCI_EVENT_META_GAP; 8944 event[pos++] = 4 + (2 * big->num_bis); 8945 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 8946 event[pos++] = status; 8947 event[pos++] = big->big_handle; 8948 event[pos++] = big->num_bis; 8949 uint8_t i; 8950 for (i=0;i<big->num_bis;i++){ 8951 little_endian_store_16(event, pos, big->bis_con_handles[i]); 8952 pos += 2; 8953 } 8954 hci_emit_event(event, pos, 0); 8955 } 8956 8957 static void hci_emit_big_terminated(const le_audio_big_t * big){ 8958 uint8_t event [4]; 8959 uint16_t pos = 0; 8960 event[pos++] = HCI_EVENT_META_GAP; 8961 event[pos++] = 2; 8962 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 8963 event[pos++] = big->big_handle; 8964 hci_emit_event(event, pos, 0); 8965 } 8966 8967 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 8968 uint8_t event [6 + (MAX_NR_BIS * 2)]; 8969 uint16_t pos = 0; 8970 event[pos++] = HCI_EVENT_META_GAP; 8971 event[pos++] = 4; 8972 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 8973 event[pos++] = status; 8974 event[pos++] = big_sync->big_handle; 8975 event[pos++] = big_sync->num_bis; 8976 uint8_t i; 8977 for (i=0;i<big_sync->num_bis;i++){ 8978 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 8979 pos += 2; 8980 } 8981 hci_emit_event(event, pos, 0); 8982 } 8983 8984 static void hci_emit_big_sync_stopped(const le_audio_big_sync_t * big_sync){ 8985 uint8_t event [4]; 8986 uint16_t pos = 0; 8987 event[pos++] = HCI_EVENT_META_GAP; 8988 event[pos++] = 2; 8989 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 8990 event[pos++] = big_sync->big_handle; 8991 hci_emit_event(event, pos, 0); 8992 } 8993 8994 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 8995 uint8_t event[6]; 8996 uint16_t pos = 0; 8997 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 8998 event[pos++] = sizeof(event) - 2; 8999 event[pos++] = big->big_handle; 9000 event[pos++] = bis_index; 9001 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9002 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9003 } 9004 9005 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9006 btstack_linked_list_iterator_t it; 9007 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9008 while (btstack_linked_list_iterator_has_next(&it)){ 9009 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9010 if ( big->big_handle == big_handle ) { 9011 return big; 9012 } 9013 } 9014 return NULL; 9015 } 9016 9017 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9018 btstack_linked_list_iterator_t it; 9019 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9020 while (btstack_linked_list_iterator_has_next(&it)){ 9021 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9022 if ( big_sync->big_handle == big_handle ) { 9023 return big_sync; 9024 } 9025 } 9026 return NULL; 9027 } 9028 9029 static void hci_iso_notify_can_send_now(void){ 9030 btstack_linked_list_iterator_t it; 9031 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9032 while (btstack_linked_list_iterator_has_next(&it)){ 9033 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9034 if (big->can_send_now_requested){ 9035 // check if no outgoing iso packets pending 9036 uint8_t i; 9037 bool can_send = true; 9038 for (i=0;i<big->num_bis;i++){ 9039 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9040 if ((iso_stream == NULL) || (iso_stream->num_packets_sent > 0)){ 9041 can_send = false; 9042 break; 9043 } 9044 } 9045 if (can_send){ 9046 // propagate can send now to individual streams 9047 big->can_send_now_requested = false; 9048 for (i=0;i<big->num_bis;i++){ 9049 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9050 iso_stream->emit_ready_to_send = true; 9051 } 9052 } 9053 } 9054 } 9055 9056 if (hci_stack->hci_packet_buffer_reserved) return; 9057 9058 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9059 while (btstack_linked_list_iterator_has_next(&it)){ 9060 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9061 // report bis ready 9062 uint8_t i; 9063 bool can_send = true; 9064 for (i=0;i<big->num_bis;i++){ 9065 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9066 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9067 iso_stream->emit_ready_to_send = false; 9068 hci_emit_bis_can_send_now(big, i); 9069 break; 9070 } 9071 } 9072 } 9073 } 9074 9075 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9076 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9077 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9078 } 9079 if (big_params->num_bis == 0){ 9080 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9081 } 9082 if (big_params->num_bis > MAX_NR_BIS){ 9083 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9084 } 9085 9086 // reserve ISO Streams 9087 uint8_t i; 9088 uint8_t status = ERROR_CODE_SUCCESS; 9089 for (i=0;i<big_params->num_bis;i++){ 9090 status = hci_iso_stream_create(HCI_CON_HANDLE_INVALID, big_params->big_handle); 9091 if (status != ERROR_CODE_SUCCESS) { 9092 break; 9093 } 9094 } 9095 9096 // free structs on error 9097 if (status != ERROR_CODE_SUCCESS){ 9098 hci_iso_stream_requested_finalize(big_params->big_handle); 9099 return status; 9100 } 9101 9102 le_audio_big_t * big = storage; 9103 big->big_handle = big_params->big_handle; 9104 big->params = big_params; 9105 big->state = LE_AUDIO_BIG_STATE_CREATE; 9106 big->num_bis = big_params->num_bis; 9107 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9108 9109 hci_run(); 9110 9111 return ERROR_CODE_SUCCESS; 9112 } 9113 9114 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9115 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9116 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9117 } 9118 if (big_sync_params->num_bis == 0){ 9119 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9120 } 9121 if (big_sync_params->num_bis > MAX_NR_BIS){ 9122 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9123 } 9124 9125 le_audio_big_sync_t * big_sync = storage; 9126 big_sync->big_handle = big_sync_params->big_handle; 9127 big_sync->params = big_sync_params; 9128 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9129 big_sync->num_bis = big_sync_params->num_bis; 9130 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9131 9132 hci_run(); 9133 9134 return ERROR_CODE_SUCCESS; 9135 } 9136 9137 uint8_t gap_big_terminate(uint8_t big_handle){ 9138 le_audio_big_t * big = hci_big_for_handle(big_handle); 9139 if (big == NULL){ 9140 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9141 } 9142 switch (big->state){ 9143 case LE_AUDIO_BIG_STATE_CREATE: 9144 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9145 hci_emit_big_terminated(big); 9146 break; 9147 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9148 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9149 break; 9150 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9151 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9152 case LE_AUDIO_BIG_STATE_ACTIVE: 9153 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9154 hci_run(); 9155 break; 9156 default: 9157 return ERROR_CODE_COMMAND_DISALLOWED; 9158 } 9159 return ERROR_CODE_SUCCESS; 9160 } 9161 9162 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9163 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9164 if (big_sync == NULL){ 9165 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9166 } 9167 switch (big_sync->state){ 9168 case LE_AUDIO_BIG_STATE_CREATE: 9169 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9170 hci_emit_big_sync_stopped(big_sync); 9171 break; 9172 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9173 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9174 break; 9175 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9176 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9177 case LE_AUDIO_BIG_STATE_ACTIVE: 9178 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 9179 hci_run(); 9180 break; 9181 default: 9182 return ERROR_CODE_COMMAND_DISALLOWED; 9183 } 9184 return ERROR_CODE_SUCCESS; 9185 } 9186 9187 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 9188 le_audio_big_t * big = hci_big_for_handle(big_handle); 9189 if (big == NULL){ 9190 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9191 } 9192 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 9193 return ERROR_CODE_COMMAND_DISALLOWED; 9194 } 9195 big->can_send_now_requested = true; 9196 hci_iso_notify_can_send_now(); 9197 return ERROR_CODE_SUCCESS; 9198 } 9199 #endif 9200 #endif /* ENABLE_BLE */ 9201 9202 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 9203 void hci_setup_test_connections_fuzz(void){ 9204 hci_connection_t * conn; 9205 9206 // default address: 66:55:44:33:00:01 9207 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 9208 9209 // setup Controller info 9210 hci_stack->num_cmd_packets = 255; 9211 hci_stack->acl_packets_total_num = 255; 9212 9213 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 9214 addr[5] = 0x01; 9215 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9216 conn->con_handle = addr[5]; 9217 conn->role = HCI_ROLE_SLAVE; 9218 conn->state = RECEIVED_CONNECTION_REQUEST; 9219 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9220 9221 // setup incoming Classic SCO connection with con handle 0x0002 9222 addr[5] = 0x02; 9223 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9224 conn->con_handle = addr[5]; 9225 conn->role = HCI_ROLE_SLAVE; 9226 conn->state = RECEIVED_CONNECTION_REQUEST; 9227 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9228 9229 // setup ready Classic ACL connection with con handle 0x0003 9230 addr[5] = 0x03; 9231 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9232 conn->con_handle = addr[5]; 9233 conn->role = HCI_ROLE_SLAVE; 9234 conn->state = OPEN; 9235 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9236 9237 // setup ready Classic SCO connection with con handle 0x0004 9238 addr[5] = 0x04; 9239 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9240 conn->con_handle = addr[5]; 9241 conn->role = HCI_ROLE_SLAVE; 9242 conn->state = OPEN; 9243 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9244 9245 // setup ready LE ACL connection with con handle 0x005 and public address 9246 addr[5] = 0x05; 9247 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 9248 conn->con_handle = addr[5]; 9249 conn->role = HCI_ROLE_SLAVE; 9250 conn->state = OPEN; 9251 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9252 conn->sm_connection.sm_connection_encrypted = 1; 9253 } 9254 9255 void hci_free_connections_fuzz(void){ 9256 btstack_linked_list_iterator_t it; 9257 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9258 while (btstack_linked_list_iterator_has_next(&it)){ 9259 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9260 btstack_linked_list_iterator_remove(&it); 9261 btstack_memory_hci_connection_free(con); 9262 } 9263 } 9264 void hci_simulate_working_fuzz(void){ 9265 hci_stack->le_scanning_param_update = false; 9266 hci_init_done(); 9267 hci_stack->num_cmd_packets = 255; 9268 } 9269 #endif 9270