1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 104 #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." 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 109 #endif 110 111 #define HCI_CONNECTION_TIMEOUT_MS 10000 112 113 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 114 #define HCI_RESET_RESEND_TIMEOUT_MS 200 115 #endif 116 117 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 118 #ifndef GAP_INQUIRY_MAX_NAME_LEN 119 #define GAP_INQUIRY_MAX_NAME_LEN 32 120 #endif 121 122 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 123 #define GAP_INQUIRY_DURATION_MIN 0x01 124 #define GAP_INQUIRY_DURATION_MAX 0x30 125 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 126 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 127 #define GAP_INQUIRY_STATE_IDLE 0x00 128 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 129 #define GAP_INQUIRY_STATE_ACTIVE 0x81 130 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 131 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 132 #define GAP_INQUIRY_STATE_PERIODIC 0x84 133 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 134 135 // GAP Remote Name Request 136 #define GAP_REMOTE_NAME_STATE_IDLE 0 137 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 138 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 139 140 // GAP Pairing 141 #define GAP_PAIRING_STATE_IDLE 0 142 #define GAP_PAIRING_STATE_SEND_PIN 1 143 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 144 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 145 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 146 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 147 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 148 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 149 150 // 151 // compact storage of relevant supported HCI Commands. 152 // X-Macro below provides enumeration and mapping table into the supported 153 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 154 // 155 156 // format: command name, byte offset, bit nr in 64-byte supported commands 157 // currently stored in 32-bit variable 158 #define SUPPORTED_HCI_COMMANDS \ 159 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 160 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 161 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 162 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 163 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 164 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 165 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 166 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 167 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 168 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 169 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 170 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 171 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 172 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 173 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 174 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 175 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 176 177 // enumerate supported commands 178 #define X(name, offset, bit) name, 179 enum { 180 SUPPORTED_HCI_COMMANDS 181 SUPPORTED_HCI_COMMANDS_COUNT 182 }; 183 #undef X 184 185 // prototypes 186 #ifdef ENABLE_CLASSIC 187 static void hci_update_scan_enable(void); 188 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 189 static int hci_local_ssp_activated(void); 190 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 191 static bool hci_ssp_supported(hci_connection_t * connection); 192 static void hci_notify_if_sco_can_send_now(void); 193 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 194 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 195 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 196 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 197 static void hci_connection_timestamp(hci_connection_t *connection); 198 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 199 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 200 #endif 201 202 static int hci_power_control_on(void); 203 static void hci_power_control_off(void); 204 static void hci_state_reset(void); 205 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 206 static void hci_emit_transport_packet_sent(void); 207 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 208 static void hci_emit_nr_connections_changed(void); 209 static void hci_emit_hci_open_failed(void); 210 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 211 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 212 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 213 static void hci_run(void); 214 static int hci_is_le_connection(hci_connection_t * connection); 215 216 #ifdef ENABLE_CLASSIC 217 static int hci_have_usb_transport(void); 218 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 219 #endif 220 221 #ifdef ENABLE_BLE 222 static void hci_whitelist_free(void); 223 #ifdef ENABLE_LE_CENTRAL 224 // called from test/ble_client/advertising_data_parser.c 225 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 226 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 227 static hci_connection_t * gap_get_outgoing_connection(void); 228 static void hci_le_scan_stop(void); 229 static bool hci_run_general_gap_le(void); 230 #endif 231 #ifdef ENABLE_LE_PERIPHERAL 232 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 233 static void hci_periodic_advertiser_list_free(void); 234 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 235 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 236 #endif /* ENABLE_LE_PERIPHERAL */ 237 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 238 static uint8_t hci_iso_stream_create(hci_iso_type_t iso_type, hci_con_handle_t con_handle, uint8_t group_id, 239 hci_iso_stream_state_t state); 240 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 241 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 242 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 243 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 244 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 245 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size); 246 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 247 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 248 static void hci_iso_notify_can_send_now(void); 249 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 250 static void hci_emit_big_terminated(const le_audio_big_t * big); 251 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 252 static void hci_emit_big_sync_stopped(uint8_t big_handle); 253 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 254 static void 255 hci_emit_cis_created(uint8_t cig_id, hci_con_handle_t cis_con_handle, uint8_t status); 256 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 257 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 258 #endif /* ENABLE_BLE */ 259 260 // the STACK is here 261 #ifndef HAVE_MALLOC 262 static hci_stack_t hci_stack_static; 263 #endif 264 static hci_stack_t * hci_stack = NULL; 265 266 #ifdef ENABLE_CLASSIC 267 // default name 268 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 269 270 // test helper 271 static uint8_t disable_l2cap_timeouts = 0; 272 #endif 273 274 // reset connection state on create and on reconnect 275 // don't overwrite addr, con handle, role 276 static void hci_connection_init(hci_connection_t * conn){ 277 conn->authentication_flags = AUTH_FLAG_NONE; 278 conn->bonding_flags = 0; 279 conn->requested_security_level = LEVEL_0; 280 #ifdef ENABLE_CLASSIC 281 conn->request_role = HCI_ROLE_INVALID; 282 conn->sniff_subrating_max_latency = 0xffff; 283 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 284 conn->link_key_type = INVALID_LINK_KEY; 285 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 286 btstack_run_loop_set_timer_context(&conn->timeout, conn); 287 hci_connection_timestamp(conn); 288 #endif 289 conn->acl_recombination_length = 0; 290 conn->acl_recombination_pos = 0; 291 conn->num_packets_sent = 0; 292 293 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 294 #ifdef ENABLE_BLE 295 conn->le_phy_update_all_phys = 0xff; 296 #endif 297 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 298 conn->le_max_tx_octets = 27; 299 #endif 300 #ifdef ENABLE_CLASSIC_PAIRING_OOB 301 conn->classic_oob_c_192 = NULL; 302 conn->classic_oob_r_192 = NULL; 303 conn->classic_oob_c_256 = NULL; 304 conn->classic_oob_r_256 = NULL; 305 #endif 306 } 307 308 /** 309 * create connection for given address 310 * 311 * @return connection OR NULL, if no memory left 312 */ 313 static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 314 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 315 316 hci_connection_t * conn = btstack_memory_hci_connection_get(); 317 if (!conn) return NULL; 318 hci_connection_init(conn); 319 320 bd_addr_copy(conn->address, addr); 321 conn->address_type = addr_type; 322 conn->con_handle = HCI_CON_HANDLE_INVALID; 323 conn->role = HCI_ROLE_INVALID; 324 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 325 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 326 #endif 327 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 328 329 return conn; 330 } 331 332 333 /** 334 * get le connection parameter range 335 * 336 * @return le connection parameter range struct 337 */ 338 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 339 *range = hci_stack->le_connection_parameter_range; 340 } 341 342 /** 343 * set le connection parameter range 344 * 345 */ 346 347 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 348 hci_stack->le_connection_parameter_range = *range; 349 } 350 351 /** 352 * @brief Test if connection parameters are inside in existing rage 353 * @param conn_interval_min (unit: 1.25ms) 354 * @param conn_interval_max (unit: 1.25ms) 355 * @param conn_latency 356 * @param supervision_timeout (unit: 10ms) 357 * @return 1 if included 358 */ 359 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){ 360 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 361 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 362 363 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 364 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 365 366 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 367 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 368 369 return 1; 370 } 371 372 /** 373 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 374 * @note: default: 1 375 * @param max_peripheral_connections 376 */ 377 #ifdef ENABLE_LE_PERIPHERAL 378 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 379 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 380 } 381 #endif 382 383 /** 384 * get hci connections iterator 385 * 386 * @return hci connections iterator 387 */ 388 389 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 390 btstack_linked_list_iterator_init(it, &hci_stack->connections); 391 } 392 393 /** 394 * get connection for a given handle 395 * 396 * @return connection OR NULL, if not found 397 */ 398 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 399 btstack_linked_list_iterator_t it; 400 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 401 while (btstack_linked_list_iterator_has_next(&it)){ 402 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 403 if ( item->con_handle == con_handle ) { 404 return item; 405 } 406 } 407 return NULL; 408 } 409 410 /** 411 * get connection for given address 412 * 413 * @return connection OR NULL, if not found 414 */ 415 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 416 btstack_linked_list_iterator_t it; 417 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 418 while (btstack_linked_list_iterator_has_next(&it)){ 419 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 420 if (connection->address_type != addr_type) continue; 421 if (memcmp(addr, connection->address, 6) != 0) continue; 422 return connection; 423 } 424 return NULL; 425 } 426 427 #ifdef ENABLE_CLASSIC 428 429 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 430 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 431 } 432 433 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 434 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 435 } 436 437 #ifdef ENABLE_SCO_OVER_HCI 438 static int hci_number_sco_connections(void){ 439 int connections = 0; 440 btstack_linked_list_iterator_t it; 441 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 442 while (btstack_linked_list_iterator_has_next(&it)){ 443 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 444 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 445 connections++; 446 } 447 return connections; 448 } 449 #endif 450 451 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 452 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 453 #ifdef HAVE_EMBEDDED_TICK 454 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 455 // connections might be timed out 456 hci_emit_l2cap_check_timeout(connection); 457 } 458 #else 459 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 460 // connections might be timed out 461 hci_emit_l2cap_check_timeout(connection); 462 } 463 #endif 464 } 465 466 static void hci_connection_timestamp(hci_connection_t *connection){ 467 #ifdef HAVE_EMBEDDED_TICK 468 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 469 #else 470 connection->timestamp = btstack_run_loop_get_time_ms(); 471 #endif 472 } 473 474 /** 475 * add authentication flags and reset timer 476 * @note: assumes classic connection 477 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 478 */ 479 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 480 bd_addr_t addr; 481 reverse_bd_addr(bd_addr, addr); 482 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 483 if (conn) { 484 connectionSetAuthenticationFlags(conn, flags); 485 hci_connection_timestamp(conn); 486 } 487 } 488 489 static bool hci_pairing_active(hci_connection_t * hci_connection){ 490 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 491 } 492 493 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 494 if (hci_pairing_active(hci_connection)) return; 495 if (ssp){ 496 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 497 } else { 498 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 499 } 500 // if we are initiator, we have sent an HCI Authenticate Request 501 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 502 503 // if we are responder, use minimal service security level as required level 504 if (!initiator){ 505 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); 506 } 507 508 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 509 510 uint8_t event[12]; 511 event[0] = GAP_EVENT_PAIRING_STARTED; 512 event[1] = 10; 513 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 514 reverse_bd_addr(hci_connection->address, &event[4]); 515 event[10] = (uint8_t) ssp; 516 event[11] = (uint8_t) initiator; 517 hci_emit_event(event, sizeof(event), 1); 518 } 519 520 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 521 hci_connection->requested_security_level = LEVEL_0; 522 if (!hci_pairing_active(hci_connection)) return; 523 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 524 #ifdef ENABLE_CLASSIC_PAIRING_OOB 525 hci_connection->classic_oob_c_192 = NULL; 526 hci_connection->classic_oob_r_192 = NULL; 527 hci_connection->classic_oob_c_256 = NULL; 528 hci_connection->classic_oob_r_256 = NULL; 529 #endif 530 log_info("pairing complete, status %02x", status); 531 532 uint8_t event[11]; 533 event[0] = GAP_EVENT_PAIRING_COMPLETE; 534 event[1] = 9; 535 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 536 reverse_bd_addr(hci_connection->address, &event[4]); 537 event[10] = status; 538 hci_emit_event(event, sizeof(event), 1); 539 540 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 541 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 542 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 543 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 544 hci_connection->bonding_status = status; 545 } 546 } 547 548 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 549 hci_connection_t * conn = hci_connection_for_handle(handle); 550 if (!conn) return false; 551 return hci_pairing_active(conn); 552 } 553 554 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 555 if (!hci_stack->link_key_db) return; 556 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 557 hci_stack->link_key_db->delete_link_key(addr); 558 } 559 560 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 561 if (!hci_stack->link_key_db) return; 562 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 563 hci_stack->link_key_db->put_link_key(addr, link_key, type); 564 } 565 566 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 567 if (!hci_stack->link_key_db) return false; 568 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 569 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 570 return result; 571 } 572 573 void gap_delete_all_link_keys(void){ 574 bd_addr_t addr; 575 link_key_t link_key; 576 link_key_type_t type; 577 btstack_link_key_iterator_t it; 578 int ok = gap_link_key_iterator_init(&it); 579 if (!ok) { 580 log_error("could not initialize iterator"); 581 return; 582 } 583 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 584 gap_drop_link_key_for_bd_addr(addr); 585 } 586 gap_link_key_iterator_done(&it); 587 } 588 589 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 590 if (!hci_stack->link_key_db) return 0; 591 if (!hci_stack->link_key_db->iterator_init) return 0; 592 return hci_stack->link_key_db->iterator_init(it); 593 } 594 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){ 595 if (!hci_stack->link_key_db) return 0; 596 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 597 } 598 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 599 if (!hci_stack->link_key_db) return; 600 hci_stack->link_key_db->iterator_done(it); 601 } 602 #endif 603 604 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 605 switch (address_type){ 606 case BD_ADDR_TYPE_LE_PUBLIC: 607 case BD_ADDR_TYPE_LE_RANDOM: 608 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_PUBLIC: 609 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_RANDOM: 610 return true; 611 default: 612 return false; 613 } 614 } 615 616 static int hci_is_le_connection(hci_connection_t * connection){ 617 return hci_is_le_connection_type(connection->address_type); 618 } 619 620 /** 621 * count connections 622 */ 623 static int nr_hci_connections(void){ 624 int count = 0; 625 btstack_linked_item_t *it; 626 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 627 count++; 628 } 629 return count; 630 } 631 632 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 633 634 unsigned int num_packets_sent_classic = 0; 635 unsigned int num_packets_sent_le = 0; 636 637 btstack_linked_item_t *it; 638 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 639 hci_connection_t * connection = (hci_connection_t *) it; 640 if (hci_is_le_connection(connection)){ 641 num_packets_sent_le += connection->num_packets_sent; 642 } 643 if (connection->address_type == BD_ADDR_TYPE_ACL){ 644 num_packets_sent_classic += connection->num_packets_sent; 645 } 646 } 647 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 648 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 649 int free_slots_le = 0; 650 651 if (free_slots_classic < 0){ 652 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); 653 return 0; 654 } 655 656 if (hci_stack->le_acl_packets_total_num){ 657 // if we have LE slots, they are used 658 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 659 if (free_slots_le < 0){ 660 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); 661 return 0; 662 } 663 } else { 664 // otherwise, classic slots are used for LE, too 665 free_slots_classic -= num_packets_sent_le; 666 if (free_slots_classic < 0){ 667 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); 668 return 0; 669 } 670 } 671 672 switch (address_type){ 673 case BD_ADDR_TYPE_UNKNOWN: 674 log_error("hci_number_free_acl_slots: unknown address type"); 675 return 0; 676 677 case BD_ADDR_TYPE_ACL: 678 return (uint16_t) free_slots_classic; 679 680 default: 681 if (hci_stack->le_acl_packets_total_num > 0){ 682 return (uint16_t) free_slots_le; 683 } 684 return (uint16_t) free_slots_classic; 685 } 686 } 687 688 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 689 // get connection type 690 hci_connection_t * connection = hci_connection_for_handle(con_handle); 691 if (!connection){ 692 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 693 return 0; 694 } 695 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 696 } 697 698 #ifdef ENABLE_CLASSIC 699 static int hci_number_free_sco_slots(void){ 700 unsigned int num_sco_packets_sent = 0; 701 btstack_linked_item_t *it; 702 if (hci_stack->synchronous_flow_control_enabled){ 703 // explicit flow control 704 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 705 hci_connection_t * connection = (hci_connection_t *) it; 706 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 707 num_sco_packets_sent += connection->num_packets_sent; 708 } 709 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 710 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 711 return 0; 712 } 713 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 714 } else { 715 // implicit flow control -- TODO 716 int num_ready = 0; 717 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 718 hci_connection_t * connection = (hci_connection_t *) it; 719 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 720 if (connection->sco_tx_ready == 0) continue; 721 num_ready++; 722 } 723 return num_ready; 724 } 725 } 726 #endif 727 728 // only used to send HCI Host Number Completed Packets 729 static int hci_can_send_comand_packet_transport(void){ 730 if (hci_stack->hci_packet_buffer_reserved) return 0; 731 732 // check for async hci transport implementations 733 if (hci_stack->hci_transport->can_send_packet_now){ 734 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 735 return 0; 736 } 737 } 738 return 1; 739 } 740 741 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 742 bool hci_can_send_command_packet_now(void){ 743 if (hci_can_send_comand_packet_transport() == 0) return false; 744 return hci_stack->num_cmd_packets > 0u; 745 } 746 747 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 748 // check for async hci transport implementations 749 if (!hci_stack->hci_transport->can_send_packet_now) return true; 750 return hci_stack->hci_transport->can_send_packet_now(packet_type); 751 } 752 753 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 754 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 755 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 756 } 757 758 bool hci_can_send_acl_le_packet_now(void){ 759 if (hci_stack->hci_packet_buffer_reserved) return false; 760 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 761 } 762 763 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 764 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 765 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 766 } 767 768 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 769 if (hci_stack->hci_packet_buffer_reserved) return false; 770 return hci_can_send_prepared_acl_packet_now(con_handle); 771 } 772 773 #ifdef ENABLE_CLASSIC 774 bool hci_can_send_acl_classic_packet_now(void){ 775 if (hci_stack->hci_packet_buffer_reserved) return false; 776 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 777 } 778 779 bool hci_can_send_prepared_sco_packet_now(void){ 780 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 781 if (hci_have_usb_transport()){ 782 return hci_stack->sco_can_send_now; 783 } else { 784 return hci_number_free_sco_slots() > 0; 785 } 786 } 787 788 bool hci_can_send_sco_packet_now(void){ 789 if (hci_stack->hci_packet_buffer_reserved) return false; 790 return hci_can_send_prepared_sco_packet_now(); 791 } 792 793 void hci_request_sco_can_send_now_event(void){ 794 hci_stack->sco_waiting_for_can_send_now = 1; 795 hci_notify_if_sco_can_send_now(); 796 } 797 #endif 798 799 // used for internal checks in l2cap.c 800 bool hci_is_packet_buffer_reserved(void){ 801 return hci_stack->hci_packet_buffer_reserved; 802 } 803 804 // reserves outgoing packet buffer. 805 // @return 1 if successful 806 bool hci_reserve_packet_buffer(void){ 807 if (hci_stack->hci_packet_buffer_reserved) { 808 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 809 return false; 810 } 811 hci_stack->hci_packet_buffer_reserved = true; 812 return true; 813 } 814 815 void hci_release_packet_buffer(void){ 816 hci_stack->hci_packet_buffer_reserved = false; 817 } 818 819 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 820 static int hci_transport_synchronous(void){ 821 return hci_stack->hci_transport->can_send_packet_now == NULL; 822 } 823 824 // used for debugging 825 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 826 static void hci_controller_dump_packets(void){ 827 // format: "{handle:04x}:{count:02d} " 828 char summaries[3][7 * 8 + 1]; 829 uint16_t totals[3]; 830 uint8_t index; 831 for (index = 0 ; index < 3 ; index++){ 832 summaries[index][0] = 0; 833 totals[index] = 0; 834 } 835 btstack_linked_item_t *it; 836 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 837 hci_connection_t * connection = (hci_connection_t *) it; 838 switch (connection->address_type){ 839 case BD_ADDR_TYPE_ACL: 840 index = 0; 841 break; 842 case BD_ADDR_TYPE_SCO: 843 index = 2; 844 break; 845 default: 846 index = 1; 847 break; 848 } 849 totals[index] += connection->num_packets_sent; 850 char item_text[10]; 851 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 852 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 853 } 854 for (index = 0 ; index < 3 ; index++){ 855 if (summaries[index][0] == 0){ 856 summaries[index][0] = '-'; 857 summaries[index][1] = 0; 858 } 859 } 860 log_info("Controller ACL BR/EDR: %s total %u / LE: %s total %u / SCO: %s total %u", summaries[0], totals[0], summaries[1], totals[1], summaries[2], totals[2]); 861 } 862 #endif 863 864 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 865 866 // 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); 867 868 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 869 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 870 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 871 max_acl_data_packet_length = hci_stack->le_data_packets_length; 872 } 873 874 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 875 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 876 max_acl_data_packet_length = connection->le_max_tx_octets; 877 } 878 #endif 879 880 log_debug("hci_send_acl_packet_fragments entered"); 881 882 uint8_t status = ERROR_CODE_SUCCESS; 883 // multiple packets could be send on a synchronous HCI transport 884 while (true){ 885 886 log_debug("hci_send_acl_packet_fragments loop entered"); 887 888 // get current data 889 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 890 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 891 bool more_fragments = false; 892 893 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 894 if (current_acl_data_packet_length > max_acl_data_packet_length){ 895 more_fragments = true; 896 current_acl_data_packet_length = max_acl_data_packet_length; 897 } 898 899 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 900 if (acl_header_pos > 0u){ 901 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 902 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 903 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 904 } 905 906 // update header len 907 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 908 909 // count packet 910 connection->num_packets_sent++; 911 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 912 913 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 914 if (more_fragments){ 915 // update start of next fragment to send 916 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 917 } else { 918 // done 919 hci_stack->acl_fragmentation_pos = 0; 920 hci_stack->acl_fragmentation_total_size = 0; 921 } 922 923 // send packet 924 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 925 const int size = current_acl_data_packet_length + 4; 926 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 927 hci_stack->acl_fragmentation_tx_active = 1; 928 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 929 if (err != 0){ 930 // no error from HCI Transport expected 931 status = ERROR_CODE_HARDWARE_FAILURE; 932 } 933 934 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 935 hci_controller_dump_packets(); 936 #endif 937 938 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 939 940 // done yet? 941 if (!more_fragments) break; 942 943 // can send more? 944 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 945 } 946 947 log_debug("hci_send_acl_packet_fragments loop over"); 948 949 // release buffer now for synchronous transport 950 if (hci_transport_synchronous()){ 951 hci_stack->acl_fragmentation_tx_active = 0; 952 hci_release_packet_buffer(); 953 hci_emit_transport_packet_sent(); 954 } 955 956 return status; 957 } 958 959 // pre: caller has reserved the packet buffer 960 uint8_t hci_send_acl_packet_buffer(int size){ 961 btstack_assert(hci_stack->hci_packet_buffer_reserved); 962 963 uint8_t * packet = hci_stack->hci_packet_buffer; 964 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 965 966 // check for free places on Bluetooth module 967 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 968 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 969 hci_release_packet_buffer(); 970 hci_emit_transport_packet_sent(); 971 return BTSTACK_ACL_BUFFERS_FULL; 972 } 973 974 hci_connection_t *connection = hci_connection_for_handle( con_handle); 975 if (!connection) { 976 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 977 hci_release_packet_buffer(); 978 hci_emit_transport_packet_sent(); 979 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 980 } 981 982 #ifdef ENABLE_CLASSIC 983 hci_connection_timestamp(connection); 984 #endif 985 986 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 987 988 // setup data 989 hci_stack->acl_fragmentation_total_size = size; 990 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 991 992 return hci_send_acl_packet_fragments(connection); 993 } 994 995 #ifdef ENABLE_CLASSIC 996 // pre: caller has reserved the packet buffer 997 uint8_t hci_send_sco_packet_buffer(int size){ 998 btstack_assert(hci_stack->hci_packet_buffer_reserved); 999 1000 uint8_t * packet = hci_stack->hci_packet_buffer; 1001 1002 // skip checks in loopback mode 1003 if (!hci_stack->loopback_mode){ 1004 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1005 1006 // check for free places on Bluetooth module 1007 if (!hci_can_send_prepared_sco_packet_now()) { 1008 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1009 hci_release_packet_buffer(); 1010 hci_emit_transport_packet_sent(); 1011 return BTSTACK_ACL_BUFFERS_FULL; 1012 } 1013 1014 // track send packet in connection struct 1015 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1016 if (!connection) { 1017 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1018 hci_release_packet_buffer(); 1019 hci_emit_transport_packet_sent(); 1020 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1021 } 1022 1023 if (hci_have_usb_transport()){ 1024 // token used 1025 hci_stack->sco_can_send_now = false; 1026 } else { 1027 if (hci_stack->synchronous_flow_control_enabled){ 1028 connection->num_packets_sent++; 1029 } else { 1030 connection->sco_tx_ready--; 1031 } 1032 } 1033 } 1034 1035 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1036 1037 #ifdef HAVE_SCO_TRANSPORT 1038 hci_stack->sco_transport->send_packet(packet, size); 1039 hci_release_packet_buffer(); 1040 hci_emit_transport_packet_sent(); 1041 1042 return 0; 1043 #else 1044 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1045 if (hci_transport_synchronous()){ 1046 hci_release_packet_buffer(); 1047 hci_emit_transport_packet_sent(); 1048 } 1049 1050 if (err != 0){ 1051 return ERROR_CODE_HARDWARE_FAILURE; 1052 } 1053 return ERROR_CODE_SUCCESS; 1054 #endif 1055 } 1056 #endif 1057 1058 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1059 static uint8_t hci_send_iso_packet_fragments(void){ 1060 1061 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1062 uint8_t status = ERROR_CODE_SUCCESS; 1063 // multiple packets could be send on a synchronous HCI transport 1064 while (true){ 1065 1066 // get current data 1067 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1068 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1069 bool more_fragments = false; 1070 1071 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1072 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1073 more_fragments = true; 1074 current_iso_data_packet_length = max_iso_data_packet_length; 1075 } 1076 1077 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1078 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1079 uint8_t pb_flags; 1080 if (iso_header_pos == 0u){ 1081 // first fragment, keep TS field 1082 pb_flags = more_fragments ? 0x00 : 0x02; 1083 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1084 } else { 1085 // later fragment, drop TS field 1086 pb_flags = more_fragments ? 0x01 : 0x03; 1087 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1088 } 1089 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1090 1091 // update header len 1092 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1093 1094 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1095 if (more_fragments){ 1096 // update start of next fragment to send 1097 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1098 } else { 1099 // done 1100 hci_stack->iso_fragmentation_pos = 0; 1101 hci_stack->iso_fragmentation_total_size = 0; 1102 } 1103 1104 // send packet 1105 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1106 const int size = current_iso_data_packet_length + 4; 1107 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1108 hci_stack->iso_fragmentation_tx_active = true; 1109 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1110 if (err != 0){ 1111 // no error from HCI Transport expected 1112 status = ERROR_CODE_HARDWARE_FAILURE; 1113 } 1114 1115 // done yet? 1116 if (!more_fragments) break; 1117 1118 // can send more? 1119 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1120 } 1121 1122 // release buffer now for synchronous transport 1123 if (hci_transport_synchronous()){ 1124 hci_stack->iso_fragmentation_tx_active = false; 1125 hci_release_packet_buffer(); 1126 hci_emit_transport_packet_sent(); 1127 } 1128 1129 return status; 1130 } 1131 1132 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1133 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1134 1135 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1136 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1137 if (iso_stream == NULL){ 1138 hci_release_packet_buffer(); 1139 hci_iso_notify_can_send_now(); 1140 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1141 } 1142 1143 // TODO: check for space on controller 1144 1145 // skip iso packets if needed 1146 if (iso_stream->num_packets_to_skip > 0){ 1147 iso_stream->num_packets_to_skip--; 1148 // pretend it was processed and trigger next one 1149 hci_release_packet_buffer(); 1150 hci_iso_notify_can_send_now(); 1151 return ERROR_CODE_SUCCESS; 1152 } 1153 1154 // track outgoing packet sent 1155 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1156 iso_stream->num_packets_sent++; 1157 1158 // setup data 1159 hci_stack->iso_fragmentation_total_size = size; 1160 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1161 1162 return hci_send_iso_packet_fragments(); 1163 } 1164 #endif 1165 1166 static void acl_handler(uint8_t *packet, uint16_t size){ 1167 1168 // get info 1169 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1170 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1171 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1172 uint16_t acl_length = READ_ACL_LENGTH(packet); 1173 1174 // ignore non-registered handle 1175 if (!conn){ 1176 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1177 return; 1178 } 1179 1180 // assert packet is complete 1181 if ((acl_length + 4u) != size){ 1182 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1183 return; 1184 } 1185 1186 #ifdef ENABLE_CLASSIC 1187 // update idle timestamp 1188 hci_connection_timestamp(conn); 1189 #endif 1190 1191 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1192 hci_stack->host_completed_packets = 1; 1193 conn->num_packets_completed++; 1194 #endif 1195 1196 // handle different packet types 1197 switch (acl_flags & 0x03u) { 1198 1199 case 0x01: // continuation fragment 1200 1201 // sanity checks 1202 if (conn->acl_recombination_pos == 0u) { 1203 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1204 return; 1205 } 1206 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1207 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1208 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1209 conn->acl_recombination_pos = 0; 1210 return; 1211 } 1212 1213 // append fragment payload (header already stored) 1214 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1215 &packet[4], acl_length); 1216 conn->acl_recombination_pos += acl_length; 1217 1218 // forward complete L2CAP packet if complete. 1219 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1220 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1221 // reset recombination buffer 1222 conn->acl_recombination_length = 0; 1223 conn->acl_recombination_pos = 0; 1224 } 1225 break; 1226 1227 case 0x02: { // first fragment 1228 1229 // sanity check 1230 if (conn->acl_recombination_pos) { 1231 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1232 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1233 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1234 } 1235 conn->acl_recombination_pos = 0; 1236 } 1237 1238 // peek into L2CAP packet! 1239 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1240 1241 // compare fragment size to L2CAP packet size 1242 if (acl_length >= (l2cap_length + 4u)){ 1243 // forward fragment as L2CAP packet 1244 hci_emit_acl_packet(packet, acl_length + 4u); 1245 } else { 1246 1247 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1248 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1249 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1250 return; 1251 } 1252 1253 // store first fragment and tweak acl length for complete package 1254 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1255 packet, acl_length + 4u); 1256 conn->acl_recombination_pos = acl_length + 4u; 1257 conn->acl_recombination_length = l2cap_length; 1258 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1259 } 1260 break; 1261 1262 } 1263 default: 1264 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1265 return; 1266 } 1267 1268 // execute main loop 1269 hci_run(); 1270 } 1271 1272 static void hci_connection_stop_timer(hci_connection_t * conn){ 1273 btstack_run_loop_remove_timer(&conn->timeout); 1274 #ifdef ENABLE_CLASSIC 1275 btstack_run_loop_remove_timer(&conn->timeout_sco); 1276 #endif 1277 } 1278 1279 static void hci_shutdown_connection(hci_connection_t *conn){ 1280 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1281 1282 #ifdef ENABLE_CLASSIC 1283 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1284 bd_addr_type_t addr_type = conn->address_type; 1285 #endif 1286 #ifdef HAVE_SCO_TRANSPORT 1287 hci_con_handle_t con_handle = conn->con_handle; 1288 #endif 1289 #endif 1290 1291 hci_connection_stop_timer(conn); 1292 1293 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1294 btstack_memory_hci_connection_free( conn ); 1295 1296 // now it's gone 1297 hci_emit_nr_connections_changed(); 1298 1299 #ifdef ENABLE_CLASSIC 1300 #ifdef ENABLE_SCO_OVER_HCI 1301 // update SCO 1302 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1303 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1304 } 1305 #endif 1306 #ifdef HAVE_SCO_TRANSPORT 1307 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1308 hci_stack->sco_transport->close(con_handle); 1309 } 1310 #endif 1311 #endif 1312 } 1313 1314 #ifdef ENABLE_CLASSIC 1315 1316 static const uint16_t packet_type_sizes[] = { 1317 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1318 HCI_ACL_DH1_SIZE, 0, 0, 0, 1319 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1320 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1321 }; 1322 static const uint8_t packet_type_feature_requirement_bit[] = { 1323 0, // 3 slot packets 1324 1, // 5 slot packets 1325 25, // EDR 2 mpbs 1326 26, // EDR 3 mbps 1327 39, // 3 slot EDR packts 1328 40, // 5 slot EDR packet 1329 }; 1330 static const uint16_t packet_type_feature_packet_mask[] = { 1331 0x0f00, // 3 slot packets 1332 0xf000, // 5 slot packets 1333 0x1102, // EDR 2 mpbs 1334 0x2204, // EDR 3 mbps 1335 0x0300, // 3 slot EDR packts 1336 0x3000, // 5 slot EDR packet 1337 }; 1338 1339 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1340 // enable packet types based on size 1341 uint16_t packet_types = 0; 1342 unsigned int i; 1343 for (i=0;i<16;i++){ 1344 if (packet_type_sizes[i] == 0) continue; 1345 if (packet_type_sizes[i] <= buffer_size){ 1346 packet_types |= 1 << i; 1347 } 1348 } 1349 // disable packet types due to missing local supported features 1350 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1351 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1352 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1353 if (feature_set) continue; 1354 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1355 packet_types &= ~packet_type_feature_packet_mask[i]; 1356 } 1357 // flip bits for "may not be used" 1358 packet_types ^= 0x3306; 1359 return packet_types; 1360 } 1361 1362 uint16_t hci_usable_acl_packet_types(void){ 1363 return hci_stack->packet_types; 1364 } 1365 #endif 1366 1367 uint8_t* hci_get_outgoing_packet_buffer(void){ 1368 // hci packet buffer is >= acl data packet length 1369 return hci_stack->hci_packet_buffer; 1370 } 1371 1372 uint16_t hci_max_acl_data_packet_length(void){ 1373 return hci_stack->acl_data_packet_length; 1374 } 1375 1376 #ifdef ENABLE_CLASSIC 1377 bool hci_extended_sco_link_supported(void){ 1378 // No. 31, byte 3, bit 7 1379 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1380 } 1381 #endif 1382 1383 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1384 // No. 54, byte 6, bit 6 1385 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1386 } 1387 1388 #ifdef ENABLE_CLASSIC 1389 static int gap_ssp_supported(void){ 1390 // No. 51, byte 6, bit 3 1391 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1392 } 1393 #endif 1394 1395 static int hci_classic_supported(void){ 1396 #ifdef ENABLE_CLASSIC 1397 // No. 37, byte 4, bit 5, = No BR/EDR Support 1398 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1399 #else 1400 return 0; 1401 #endif 1402 } 1403 1404 static int hci_le_supported(void){ 1405 #ifdef ENABLE_BLE 1406 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1407 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1408 #else 1409 return 0; 1410 #endif 1411 } 1412 1413 static bool hci_command_supported(uint8_t command_index){ 1414 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1415 } 1416 1417 #ifdef ENABLE_BLE 1418 1419 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1420 static bool hci_extended_advertising_supported(void){ 1421 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1422 } 1423 #endif 1424 1425 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1426 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1427 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1428 } else { 1429 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1430 } 1431 } 1432 1433 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1434 *addr_type = hci_stack->le_own_addr_type; 1435 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1436 } 1437 1438 #ifdef ENABLE_LE_PERIPHERAL 1439 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1440 *addr_type = hci_stack->le_advertisements_own_addr_type; 1441 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1442 }; 1443 #endif 1444 1445 #ifdef ENABLE_LE_CENTRAL 1446 1447 /** 1448 * @brief Get own addr type and address used for LE connections (Central) 1449 */ 1450 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1451 *addr_type = hci_stack->le_connection_own_addr_type; 1452 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1453 } 1454 1455 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1456 1457 uint16_t offset = 3; 1458 uint8_t num_reports = packet[offset]; 1459 offset += 1; 1460 1461 uint16_t i; 1462 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1463 for (i=0; (i<num_reports) && (offset < size);i++){ 1464 // sanity checks on data_length: 1465 uint8_t data_length = packet[offset + 8]; 1466 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1467 if ((offset + 9u + data_length + 1u) > size) return; 1468 // setup event 1469 uint8_t event_size = 10u + data_length; 1470 uint16_t pos = 0; 1471 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1472 event[pos++] = event_size; 1473 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1474 offset += 8; 1475 pos += 8; 1476 event[pos++] = packet[offset + 1 + data_length]; // rssi 1477 event[pos++] = data_length; 1478 offset++; 1479 (void)memcpy(&event[pos], &packet[offset], data_length); 1480 pos += data_length; 1481 offset += data_length + 1u; // rssi 1482 hci_emit_event(event, pos, 1); 1483 } 1484 } 1485 1486 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1487 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1488 uint16_t offset = 3; 1489 uint8_t num_reports = packet[offset++]; 1490 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1491 uint8_t i; 1492 for (i=0; (i<num_reports) && (offset < size);i++){ 1493 // sanity checks on data_length: 1494 uint16_t data_length = packet[offset + 23]; 1495 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1496 if ((offset + 24u + data_length) > size) return; 1497 uint16_t event_type = little_endian_read_16(packet, offset); 1498 offset += 2; 1499 if ((event_type & 0x10) != 0) { 1500 // setup legacy event 1501 uint8_t legacy_event_type; 1502 switch (event_type){ 1503 case 0b0010011: 1504 // ADV_IND 1505 legacy_event_type = 0; 1506 break; 1507 case 0b0010101: 1508 // ADV_DIRECT_IND 1509 legacy_event_type = 1; 1510 break; 1511 case 0b0010010: 1512 // ADV_SCAN_IND 1513 legacy_event_type = 2; 1514 break; 1515 case 0b0010000: 1516 // ADV_NONCONN_IND 1517 legacy_event_type = 3; 1518 break; 1519 case 0b0011011: 1520 case 0b0011010: 1521 // SCAN_RSP 1522 legacy_event_type = 4; 1523 break; 1524 default: 1525 legacy_event_type = 0; 1526 break; 1527 } 1528 uint16_t pos = 0; 1529 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1530 event[pos++] = 10u + data_length; 1531 event[pos++] = legacy_event_type; 1532 // copy address type + address 1533 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1534 offset += 7; 1535 pos += 7; 1536 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1537 offset += 4; 1538 // copy rssi 1539 event[pos++] = packet[offset++]; 1540 // skip periodic advertising interval and direct address 1541 offset += 9; 1542 // copy data len + data; 1543 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1544 pos += 1 +data_length; 1545 offset += 1+ data_length; 1546 hci_emit_event(event, pos, 1); 1547 } else { 1548 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1549 uint8_t report_len = 24 + data_length; 1550 event[1] = report_len; 1551 little_endian_store_16(event, 2, event_type); 1552 memcpy(&event[4], &packet[offset], report_len); 1553 offset += report_len; 1554 hci_emit_event(event, 2 + report_len, 1); 1555 } 1556 } 1557 } 1558 #endif 1559 1560 #endif 1561 #endif 1562 1563 #ifdef ENABLE_BLE 1564 #ifdef ENABLE_LE_PERIPHERAL 1565 static void hci_update_advertisements_enabled_for_current_roles(void){ 1566 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1567 // get number of active le slave connections 1568 int num_slave_connections = 0; 1569 btstack_linked_list_iterator_t it; 1570 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1571 while (btstack_linked_list_iterator_has_next(&it)){ 1572 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1573 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1574 if (con->state != OPEN) continue; 1575 if (con->role != HCI_ROLE_SLAVE) continue; 1576 if (!hci_is_le_connection(con)) continue; 1577 num_slave_connections++; 1578 } 1579 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1580 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1581 } else { 1582 hci_stack->le_advertisements_enabled_for_current_roles = false; 1583 } 1584 } 1585 #endif 1586 #endif 1587 1588 #ifdef ENABLE_CLASSIC 1589 static void gap_run_set_local_name(void){ 1590 hci_reserve_packet_buffer(); 1591 uint8_t * packet = hci_stack->hci_packet_buffer; 1592 // construct HCI Command and send 1593 uint16_t opcode = hci_write_local_name.opcode; 1594 hci_stack->last_cmd_opcode = opcode; 1595 packet[0] = opcode & 0xff; 1596 packet[1] = opcode >> 8; 1597 packet[2] = DEVICE_NAME_LEN; 1598 memset(&packet[3], 0, DEVICE_NAME_LEN); 1599 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1600 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1601 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1602 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1603 // expand '00:00:00:00:00:00' in name with bd_addr 1604 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1605 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1606 } 1607 1608 static void gap_run_set_eir_data(void){ 1609 hci_reserve_packet_buffer(); 1610 uint8_t * packet = hci_stack->hci_packet_buffer; 1611 // construct HCI Command in-place and send 1612 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1613 hci_stack->last_cmd_opcode = opcode; 1614 uint16_t offset = 0; 1615 packet[offset++] = opcode & 0xff; 1616 packet[offset++] = opcode >> 8; 1617 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1618 packet[offset++] = 0; // FEC not required 1619 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1620 if (hci_stack->eir_data){ 1621 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1622 ad_context_t context; 1623 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1624 uint8_t data_type = ad_iterator_get_data_type(&context); 1625 uint8_t size = ad_iterator_get_data_len(&context); 1626 const uint8_t *data = ad_iterator_get_data(&context); 1627 // copy item 1628 packet[offset++] = size + 1; 1629 packet[offset++] = data_type; 1630 memcpy(&packet[offset], data, size); 1631 // update name item 1632 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1633 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1634 } 1635 offset += size; 1636 } 1637 } else { 1638 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1639 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1640 packet[offset++] = bytes_to_copy + 1; 1641 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1642 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1643 // expand '00:00:00:00:00:00' in name with bd_addr 1644 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1645 } 1646 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1647 } 1648 1649 static void hci_run_gap_tasks_classic(void){ 1650 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1651 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1652 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1653 return; 1654 } 1655 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1656 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1657 gap_run_set_local_name(); 1658 return; 1659 } 1660 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1661 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1662 gap_run_set_eir_data(); 1663 return; 1664 } 1665 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1666 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1667 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1668 return; 1669 } 1670 // write page scan activity 1671 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1672 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1673 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1674 return; 1675 } 1676 // write page scan type 1677 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1678 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1679 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1680 return; 1681 } 1682 // write page timeout 1683 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1684 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1685 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1686 return; 1687 } 1688 // send scan enable 1689 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1690 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1691 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1692 return; 1693 } 1694 // send write scan activity 1695 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1696 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1697 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1698 return; 1699 } 1700 } 1701 #endif 1702 1703 #ifndef HAVE_HOST_CONTROLLER_API 1704 1705 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1706 if (!hci_stack->config) return 0; 1707 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1708 // Limit baud rate for Broadcom chipsets to 3 mbps 1709 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1710 baud_rate = 3000000; 1711 } 1712 return baud_rate; 1713 } 1714 1715 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1716 UNUSED(ds); 1717 1718 switch (hci_stack->substate){ 1719 case HCI_INIT_W4_SEND_RESET: 1720 log_info("Resend HCI Reset"); 1721 hci_stack->substate = HCI_INIT_SEND_RESET; 1722 hci_stack->num_cmd_packets = 1; 1723 hci_run(); 1724 break; 1725 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1726 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1727 if (hci_stack->hci_transport->reset_link){ 1728 hci_stack->hci_transport->reset_link(); 1729 } 1730 1731 /* fall through */ 1732 1733 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1734 log_info("Resend HCI Reset - CSR Warm Boot"); 1735 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1736 hci_stack->num_cmd_packets = 1; 1737 hci_run(); 1738 break; 1739 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1740 if (hci_stack->hci_transport->set_baudrate){ 1741 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1742 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1743 hci_stack->hci_transport->set_baudrate(baud_rate); 1744 } 1745 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1746 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1747 if (hci_stack->hci_transport->reset_link){ 1748 log_info("Link Reset"); 1749 hci_stack->hci_transport->reset_link(); 1750 } 1751 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1752 hci_run(); 1753 } 1754 break; 1755 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1756 // otherwise continue 1757 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1758 hci_send_cmd(&hci_read_local_supported_commands); 1759 break; 1760 default: 1761 break; 1762 } 1763 } 1764 #endif 1765 1766 static void hci_initializing_next_state(void){ 1767 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1768 } 1769 1770 static void hci_init_done(void){ 1771 // done. tell the app 1772 log_info("hci_init_done -> HCI_STATE_WORKING"); 1773 hci_stack->state = HCI_STATE_WORKING; 1774 hci_emit_state(); 1775 } 1776 1777 // assumption: hci_can_send_command_packet_now() == true 1778 static void hci_initializing_run(void){ 1779 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1780 1781 if (!hci_can_send_command_packet_now()) return; 1782 1783 #ifndef HAVE_HOST_CONTROLLER_API 1784 bool need_baud_change = hci_stack->config 1785 && hci_stack->chipset 1786 && hci_stack->chipset->set_baudrate_command 1787 && hci_stack->hci_transport->set_baudrate 1788 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1789 #endif 1790 1791 switch (hci_stack->substate){ 1792 case HCI_INIT_SEND_RESET: 1793 hci_state_reset(); 1794 1795 #ifndef HAVE_HOST_CONTROLLER_API 1796 // prepare reset if command complete not received in 100ms 1797 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1798 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1799 btstack_run_loop_add_timer(&hci_stack->timeout); 1800 #endif 1801 // send command 1802 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1803 hci_send_cmd(&hci_reset); 1804 break; 1805 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1806 hci_send_cmd(&hci_read_local_version_information); 1807 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1808 break; 1809 1810 #ifndef HAVE_HOST_CONTROLLER_API 1811 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1812 hci_state_reset(); 1813 // prepare reset if command complete not received in 100ms 1814 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1815 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1816 btstack_run_loop_add_timer(&hci_stack->timeout); 1817 // send command 1818 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1819 hci_send_cmd(&hci_reset); 1820 break; 1821 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1822 hci_state_reset(); 1823 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1824 hci_send_cmd(&hci_reset); 1825 break; 1826 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1827 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1828 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1829 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1830 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1831 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1832 break; 1833 } 1834 case HCI_INIT_SET_BD_ADDR: 1835 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1836 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1837 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1838 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1839 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1840 break; 1841 case HCI_INIT_SEND_READ_LOCAL_NAME: 1842 #ifdef ENABLE_CLASSIC 1843 hci_send_cmd(&hci_read_local_name); 1844 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1845 break; 1846 #endif 1847 /* fall through */ 1848 1849 case HCI_INIT_SEND_BAUD_CHANGE: 1850 if (need_baud_change) { 1851 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1852 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1853 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1854 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1855 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1856 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1857 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1858 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1859 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1860 btstack_run_loop_add_timer(&hci_stack->timeout); 1861 } 1862 break; 1863 } 1864 1865 /* fall through */ 1866 1867 case HCI_INIT_CUSTOM_INIT: 1868 // Custom initialization 1869 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1870 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1871 bool send_cmd = false; 1872 switch (hci_stack->chipset_result){ 1873 case BTSTACK_CHIPSET_VALID_COMMAND: 1874 send_cmd = true; 1875 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1876 break; 1877 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1878 send_cmd = true; 1879 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1880 log_info("CSR Warm Boot"); 1881 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1882 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1883 btstack_run_loop_add_timer(&hci_stack->timeout); 1884 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1885 && hci_stack->config 1886 && hci_stack->chipset 1887 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1888 && hci_stack->hci_transport->set_baudrate 1889 && hci_transport_uart_get_main_baud_rate()){ 1890 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1891 } else { 1892 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1893 } 1894 break; 1895 default: 1896 break; 1897 } 1898 1899 if (send_cmd){ 1900 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1901 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1902 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1903 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1904 break; 1905 } 1906 log_info("Init script done"); 1907 1908 // Init script download on Broadcom chipsets causes: 1909 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1910 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1911 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1912 1913 // - baud rate to reset, restore UART baud rate if needed 1914 if (need_baud_change) { 1915 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1916 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1917 hci_stack->hci_transport->set_baudrate(baud_rate); 1918 } 1919 1920 uint16_t bcm_delay_ms = 300; 1921 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1922 // -> Work around: wait here. 1923 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1924 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1925 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1926 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1927 btstack_run_loop_add_timer(&hci_stack->timeout); 1928 break; 1929 } 1930 } 1931 #endif 1932 /* fall through */ 1933 1934 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1935 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1936 hci_send_cmd(&hci_read_local_supported_commands); 1937 break; 1938 case HCI_INIT_READ_BD_ADDR: 1939 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1940 hci_send_cmd(&hci_read_bd_addr); 1941 break; 1942 case HCI_INIT_READ_BUFFER_SIZE: 1943 // only read buffer size if supported 1944 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1945 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1946 hci_send_cmd(&hci_read_buffer_size); 1947 break; 1948 } 1949 1950 /* fall through */ 1951 1952 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1953 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1954 hci_send_cmd(&hci_read_local_supported_features); 1955 break; 1956 1957 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1958 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1959 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1960 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1961 break; 1962 case HCI_INIT_HOST_BUFFER_SIZE: 1963 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1964 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1965 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1966 break; 1967 #endif 1968 1969 case HCI_INIT_SET_EVENT_MASK: 1970 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1971 if (hci_le_supported()){ 1972 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1973 } else { 1974 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1975 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1976 } 1977 break; 1978 1979 case HCI_INIT_SET_EVENT_MASK_2: 1980 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 1981 // setting Event Mask 2 causes Controller to drop Encryption Change events. 1982 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 1983 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 1984 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 1985 // Encryption Change Event v2 - bit 25 1986 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 1987 break; 1988 } 1989 1990 #ifdef ENABLE_CLASSIC 1991 /* fall through */ 1992 1993 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 1994 if (hci_classic_supported() && gap_ssp_supported()){ 1995 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 1996 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 1997 break; 1998 } 1999 2000 /* fall through */ 2001 2002 case HCI_INIT_WRITE_INQUIRY_MODE: 2003 if (hci_classic_supported()){ 2004 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2005 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2006 break; 2007 } 2008 2009 /* fall through */ 2010 2011 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2012 // skip write secure connections host support if not supported or disabled 2013 if (hci_classic_supported() && hci_stack->secure_connections_enable 2014 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2015 hci_stack->secure_connections_active = true; 2016 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2017 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2018 break; 2019 } 2020 2021 /* fall through */ 2022 2023 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2024 // skip set min encryption key size 2025 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2026 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2027 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2028 break; 2029 } 2030 2031 #ifdef ENABLE_SCO_OVER_HCI 2032 /* fall through */ 2033 2034 // only sent if ENABLE_SCO_OVER_HCI is defined 2035 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2036 // skip write synchronous flow control if not supported 2037 if (hci_classic_supported() 2038 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2039 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2040 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2041 break; 2042 } 2043 /* fall through */ 2044 2045 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2046 // skip write default erroneous data reporting if not supported 2047 if (hci_classic_supported() 2048 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2049 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2050 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2051 break; 2052 } 2053 #endif 2054 2055 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2056 /* fall through */ 2057 2058 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2059 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2060 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2061 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2062 #ifdef ENABLE_SCO_OVER_HCI 2063 log_info("BCM: Route SCO data via HCI transport"); 2064 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2065 #endif 2066 #ifdef ENABLE_SCO_OVER_PCM 2067 log_info("BCM: Route SCO data via PCM interface"); 2068 #ifdef ENABLE_BCM_PCM_WBS 2069 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2070 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2071 #else 2072 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2073 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2074 #endif 2075 #endif 2076 break; 2077 } 2078 #endif 2079 2080 #ifdef ENABLE_SCO_OVER_PCM 2081 /* fall through */ 2082 2083 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2084 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2085 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2086 log_info("BCM: Config PCM interface for I2S"); 2087 #ifdef ENABLE_BCM_PCM_WBS 2088 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2089 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2090 #else 2091 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2092 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2093 #endif 2094 break; 2095 } 2096 #endif 2097 #endif 2098 2099 #ifdef ENABLE_BLE 2100 /* fall through */ 2101 2102 // LE INIT 2103 case HCI_INIT_LE_READ_BUFFER_SIZE: 2104 if (hci_le_supported()){ 2105 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2106 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2107 hci_send_cmd(&hci_le_read_buffer_size_v2); 2108 } else { 2109 hci_send_cmd(&hci_le_read_buffer_size); 2110 } 2111 break; 2112 } 2113 2114 /* fall through */ 2115 2116 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2117 // skip write le host if not supported (e.g. on LE only EM9301) 2118 if (hci_le_supported() 2119 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2120 // LE Supported Host = 1, Simultaneous Host = 0 2121 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2122 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2123 break; 2124 } 2125 2126 /* fall through */ 2127 2128 case HCI_INIT_LE_SET_EVENT_MASK: 2129 if (hci_le_supported()){ 2130 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2131 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2132 break; 2133 } 2134 #endif 2135 2136 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2137 /* fall through */ 2138 2139 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2140 if (hci_le_supported() 2141 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2142 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2143 hci_send_cmd(&hci_le_read_maximum_data_length); 2144 break; 2145 } 2146 2147 /* fall through */ 2148 2149 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2150 if (hci_le_supported() 2151 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2152 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2153 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2154 break; 2155 } 2156 #endif 2157 2158 #ifdef ENABLE_LE_CENTRAL 2159 /* fall through */ 2160 2161 case HCI_INIT_READ_WHITE_LIST_SIZE: 2162 if (hci_le_supported()){ 2163 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2164 hci_send_cmd(&hci_le_read_white_list_size); 2165 break; 2166 } 2167 2168 #endif 2169 2170 #ifdef ENABLE_LE_PERIPHERAL 2171 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2172 /* fall through */ 2173 2174 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2175 if (hci_extended_advertising_supported()){ 2176 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2177 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2178 break; 2179 } 2180 #endif 2181 #endif 2182 /* fall through */ 2183 2184 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2185 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2186 if (hci_le_supported()) { 2187 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2188 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2189 break; 2190 } 2191 #endif 2192 2193 /* fall through */ 2194 2195 case HCI_INIT_DONE: 2196 hci_stack->substate = HCI_INIT_DONE; 2197 // main init sequence complete 2198 #ifdef ENABLE_CLASSIC 2199 // check if initial Classic GAP Tasks are completed 2200 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2201 hci_run_gap_tasks_classic(); 2202 break; 2203 } 2204 #endif 2205 #ifdef ENABLE_BLE 2206 #ifdef ENABLE_LE_CENTRAL 2207 // check if initial LE GAP Tasks are completed 2208 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2209 hci_run_general_gap_le(); 2210 break; 2211 } 2212 #endif 2213 #endif 2214 hci_init_done(); 2215 break; 2216 2217 default: 2218 return; 2219 } 2220 } 2221 2222 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2223 bool command_completed = false; 2224 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2225 uint16_t opcode = little_endian_read_16(packet,3); 2226 if (opcode == hci_stack->last_cmd_opcode){ 2227 command_completed = true; 2228 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2229 } else { 2230 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2231 } 2232 } 2233 2234 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2235 uint8_t status = packet[2]; 2236 uint16_t opcode = little_endian_read_16(packet,4); 2237 if (opcode == hci_stack->last_cmd_opcode){ 2238 if (status){ 2239 command_completed = true; 2240 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2241 } else { 2242 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2243 } 2244 } else { 2245 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2246 } 2247 } 2248 #ifndef HAVE_HOST_CONTROLLER_API 2249 // Vendor == CSR 2250 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2251 // TODO: track actual command 2252 command_completed = true; 2253 } 2254 2255 // Vendor == Toshiba 2256 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2257 // TODO: track actual command 2258 command_completed = true; 2259 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2260 hci_stack->num_cmd_packets = 1; 2261 } 2262 #endif 2263 2264 return command_completed; 2265 } 2266 2267 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2268 2269 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2270 2271 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2272 2273 #ifndef HAVE_HOST_CONTROLLER_API 2274 2275 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2276 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2277 // 2278 // HCI Reset 2279 // Timeout 100 ms 2280 // HCI Reset 2281 // Command Complete Reset 2282 // HCI Read Local Version Information 2283 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2284 // hang... 2285 // 2286 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2287 if (!command_completed 2288 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2289 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2290 2291 uint16_t opcode = little_endian_read_16(packet,3); 2292 if (opcode == hci_reset.opcode){ 2293 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2294 return; 2295 } 2296 } 2297 2298 // CSR & H5 2299 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2300 if (!command_completed 2301 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2302 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2303 2304 uint16_t opcode = little_endian_read_16(packet,3); 2305 if (opcode == hci_reset.opcode){ 2306 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2307 return; 2308 } 2309 } 2310 2311 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2312 // fix: Correct substate and behave as command below 2313 if (command_completed){ 2314 switch (hci_stack->substate){ 2315 case HCI_INIT_SEND_RESET: 2316 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2317 break; 2318 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2319 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2320 break; 2321 default: 2322 break; 2323 } 2324 } 2325 2326 #endif 2327 2328 if (!command_completed) return; 2329 2330 bool need_baud_change = false; 2331 bool need_addr_change = false; 2332 2333 #ifndef HAVE_HOST_CONTROLLER_API 2334 need_baud_change = hci_stack->config 2335 && hci_stack->chipset 2336 && hci_stack->chipset->set_baudrate_command 2337 && hci_stack->hci_transport->set_baudrate 2338 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2339 2340 need_addr_change = hci_stack->custom_bd_addr_set 2341 && hci_stack->chipset 2342 && hci_stack->chipset->set_bd_addr_command; 2343 #endif 2344 2345 switch(hci_stack->substate){ 2346 2347 #ifndef HAVE_HOST_CONTROLLER_API 2348 case HCI_INIT_SEND_RESET: 2349 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2350 // fix: just correct substate and behave as command below 2351 2352 /* fall through */ 2353 #endif 2354 2355 case HCI_INIT_W4_SEND_RESET: 2356 btstack_run_loop_remove_timer(&hci_stack->timeout); 2357 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2358 return; 2359 2360 #ifndef HAVE_HOST_CONTROLLER_API 2361 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2362 // for STLC2500D, baud rate change already happened. 2363 // for others, baud rate gets changed now 2364 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2365 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2366 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2367 hci_stack->hci_transport->set_baudrate(baud_rate); 2368 } 2369 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2370 return; 2371 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2372 btstack_run_loop_remove_timer(&hci_stack->timeout); 2373 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2374 return; 2375 case HCI_INIT_W4_CUSTOM_INIT: 2376 // repeat custom init 2377 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2378 return; 2379 #endif 2380 2381 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2382 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2383 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2384 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2385 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2386 return; 2387 } 2388 if (need_addr_change){ 2389 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2390 return; 2391 } 2392 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2393 return; 2394 #ifndef HAVE_HOST_CONTROLLER_API 2395 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2396 if (need_baud_change){ 2397 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2398 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2399 hci_stack->hci_transport->set_baudrate(baud_rate); 2400 } 2401 if (need_addr_change){ 2402 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2403 return; 2404 } 2405 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2406 return; 2407 case HCI_INIT_W4_SET_BD_ADDR: 2408 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2409 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2410 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2411 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2412 return; 2413 } 2414 // skipping st warm boot 2415 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2416 return; 2417 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2418 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2419 return; 2420 #endif 2421 2422 case HCI_INIT_DONE: 2423 // set state if we came here by fall through 2424 hci_stack->substate = HCI_INIT_DONE; 2425 return; 2426 2427 default: 2428 break; 2429 } 2430 hci_initializing_next_state(); 2431 } 2432 2433 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2434 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2435 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2436 // check if we have been aware of the HCI connection 2437 switch (conn->state){ 2438 case SENT_CREATE_CONNECTION: 2439 case RECEIVED_CONNECTION_REQUEST: 2440 break; 2441 default: 2442 return; 2443 } 2444 2445 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2446 bd_addr_t bd_address; 2447 (void)memcpy(&bd_address, conn->address, 6); 2448 2449 #ifdef ENABLE_CLASSIC 2450 // cache needed data 2451 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2452 #endif 2453 2454 // connection failed, remove entry 2455 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2456 btstack_memory_hci_connection_free( conn ); 2457 2458 #ifdef ENABLE_CLASSIC 2459 // notify client if dedicated bonding 2460 if (notify_dedicated_bonding_failed){ 2461 log_info("hci notify_dedicated_bonding_failed"); 2462 hci_emit_dedicated_bonding_result(bd_address, status); 2463 } 2464 2465 // if authentication error, also delete link key 2466 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2467 gap_drop_link_key_for_bd_addr(bd_address); 2468 } 2469 #else 2470 UNUSED(status); 2471 #endif 2472 } 2473 2474 #ifdef ENABLE_CLASSIC 2475 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2476 // SSP Controller 2477 if (features[6] & (1 << 3)){ 2478 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2479 } 2480 // eSCO 2481 if (features[3] & (1<<7)){ 2482 conn->remote_supported_features[0] |= 1; 2483 } 2484 // Extended features 2485 if (features[7] & (1<<7)){ 2486 conn->remote_supported_features[0] |= 2; 2487 } 2488 } 2489 2490 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2491 // SSP Host 2492 if (features[0] & (1 << 0)){ 2493 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2494 } 2495 // SC Host 2496 if (features[0] & (1 << 3)){ 2497 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2498 } 2499 } 2500 2501 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2502 // SC Controller 2503 if (features[1] & (1 << 0)){ 2504 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2505 } 2506 } 2507 2508 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2509 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2510 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2511 log_info("Remote features %02x, bonding flags %x", conn->remote_supported_features[0], conn->bonding_flags); 2512 if (conn->bonding_flags & BONDING_DEDICATED){ 2513 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2514 } 2515 } 2516 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2517 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2518 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2519 } 2520 2521 #endif 2522 2523 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2524 // handle BT initialization 2525 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2526 hci_initializing_event_handler(packet, size); 2527 } 2528 2529 // help with BT sleep 2530 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2531 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2532 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2533 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2534 hci_initializing_next_state(); 2535 } 2536 } 2537 2538 #ifdef ENABLE_CLASSIC 2539 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2540 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2541 conn->encryption_key_size = encryption_key_size; 2542 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2543 2544 // trigger disconnect for dedicated bonding, skip emit security level as disconnect is pending 2545 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2546 conn->bonding_flags &= ~BONDING_DEDICATED; 2547 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2548 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2549 return; 2550 } 2551 2552 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2553 conn->requested_security_level = LEVEL_0; 2554 hci_emit_security_level(conn->con_handle, security_level); 2555 return; 2556 } 2557 2558 // Request remote features if not already done 2559 hci_trigger_remote_features_for_connection(conn); 2560 2561 // Request Authentication if not already done 2562 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2563 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2564 } 2565 #endif 2566 2567 static void hci_store_local_supported_commands(const uint8_t * packet){ 2568 // create mapping table 2569 #define X(name, offset, bit) { offset, bit }, 2570 static struct { 2571 uint8_t byte_offset; 2572 uint8_t bit_position; 2573 } supported_hci_commands_map [] = { 2574 SUPPORTED_HCI_COMMANDS 2575 }; 2576 #undef X 2577 2578 // create names for debug purposes 2579 #ifdef ENABLE_LOG_DEBUG 2580 #define X(name, offset, bit) #name, 2581 static const char * command_names[] = { 2582 SUPPORTED_HCI_COMMANDS 2583 }; 2584 #undef X 2585 #endif 2586 2587 hci_stack->local_supported_commands = 0; 2588 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2589 uint16_t i; 2590 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2591 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2592 #ifdef ENABLE_LOG_DEBUG 2593 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); 2594 #else 2595 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2596 #endif 2597 hci_stack->local_supported_commands |= (1LU << i); 2598 } 2599 } 2600 log_info("Local supported commands summary %04x", hci_stack->local_supported_commands); 2601 } 2602 2603 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2604 UNUSED(size); 2605 2606 uint16_t manufacturer; 2607 #ifdef ENABLE_CLASSIC 2608 hci_con_handle_t handle; 2609 hci_connection_t * conn; 2610 #endif 2611 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2612 uint8_t status; 2613 #endif 2614 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2615 le_audio_cig_t * cig; 2616 #endif 2617 2618 // get num cmd packets - limit to 1 to reduce complexity 2619 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2620 2621 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2622 switch (opcode){ 2623 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2624 if (packet[5]) break; 2625 // terminate, name 248 chars 2626 packet[6+248] = 0; 2627 log_info("local name: %s", &packet[6]); 2628 break; 2629 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2630 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2631 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2632 uint16_t acl_len = little_endian_read_16(packet, 6); 2633 uint16_t sco_len = packet[8]; 2634 2635 // determine usable ACL/SCO payload size 2636 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2637 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2638 2639 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2640 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2641 2642 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2643 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2644 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2645 } 2646 break; 2647 case HCI_OPCODE_HCI_READ_RSSI: 2648 if (packet[5] == ERROR_CODE_SUCCESS){ 2649 uint8_t event[5]; 2650 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2651 event[1] = 3; 2652 (void)memcpy(&event[2], &packet[6], 3); 2653 hci_emit_event(event, sizeof(event), 1); 2654 } 2655 break; 2656 #ifdef ENABLE_BLE 2657 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2658 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2659 hci_stack->le_iso_packets_total_num = packet[11]; 2660 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2661 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2662 2663 /* fall through */ 2664 2665 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2666 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2667 hci_stack->le_acl_packets_total_num = packet[8]; 2668 // determine usable ACL payload size 2669 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2670 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2671 } 2672 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); 2673 break; 2674 #endif 2675 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2676 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2677 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2678 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2679 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); 2680 break; 2681 #endif 2682 #ifdef ENABLE_LE_CENTRAL 2683 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2684 hci_stack->le_whitelist_capacity = packet[6]; 2685 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2686 break; 2687 #endif 2688 #ifdef ENABLE_LE_PERIPHERAL 2689 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2690 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2691 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2692 break; 2693 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2694 if (hci_stack->le_advertising_set_in_current_command != 0) { 2695 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2696 hci_stack->le_advertising_set_in_current_command = 0; 2697 if (advertising_set == NULL) break; 2698 uint8_t adv_status = packet[6]; 2699 uint8_t tx_power = packet[7]; 2700 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 }; 2701 if (adv_status == 0){ 2702 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2703 } 2704 hci_emit_event(event, sizeof(event), 1); 2705 } 2706 break; 2707 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2708 if (hci_stack->le_advertising_set_in_current_command != 0) { 2709 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2710 hci_stack->le_advertising_set_in_current_command = 0; 2711 if (advertising_set == NULL) break; 2712 uint8_t adv_status = packet[5]; 2713 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2714 if (adv_status == 0){ 2715 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2716 } 2717 hci_emit_event(event, sizeof(event), 1); 2718 } 2719 break; 2720 #endif 2721 #endif 2722 case HCI_OPCODE_HCI_READ_BD_ADDR: 2723 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2724 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)); 2725 #ifdef ENABLE_CLASSIC 2726 if (hci_stack->link_key_db){ 2727 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2728 } 2729 #endif 2730 break; 2731 #ifdef ENABLE_CLASSIC 2732 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2733 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2734 break; 2735 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2736 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2737 if (status == ERROR_CODE_SUCCESS) { 2738 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2739 } else { 2740 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2741 } 2742 break; 2743 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2744 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2745 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2746 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2747 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2748 hci_emit_event(event, sizeof(event), 1); 2749 } 2750 break; 2751 #endif 2752 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2753 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2754 2755 #ifdef ENABLE_CLASSIC 2756 // determine usable ACL packet types based on host buffer size and supported features 2757 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2758 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2759 #endif 2760 // Classic/LE 2761 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2762 break; 2763 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2764 manufacturer = little_endian_read_16(packet, 10); 2765 // map Cypress to Broadcom 2766 if (manufacturer == BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR){ 2767 log_info("Treat Cypress as Broadcom"); 2768 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2769 little_endian_store_16(packet, 10, manufacturer); 2770 } 2771 hci_stack->manufacturer = manufacturer; 2772 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2773 break; 2774 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2775 hci_store_local_supported_commands(packet); 2776 break; 2777 #ifdef ENABLE_CLASSIC 2778 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2779 if (packet[5]) return; 2780 hci_stack->synchronous_flow_control_enabled = 1; 2781 break; 2782 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2783 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2784 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2785 conn = hci_connection_for_handle(handle); 2786 if (conn != NULL) { 2787 uint8_t key_size = 0; 2788 if (status == 0){ 2789 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2790 log_info("Handle %04x key Size: %u", handle, key_size); 2791 } else { 2792 key_size = 1; 2793 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2794 } 2795 hci_handle_read_encryption_key_size_complete(conn, key_size); 2796 } 2797 break; 2798 // assert pairing complete event is emitted. 2799 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2800 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2801 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2802 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2803 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2804 // lookup connection by gap pairing addr 2805 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2806 if (conn == NULL) break; 2807 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2808 break; 2809 2810 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2811 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2812 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2813 uint8_t event[67]; 2814 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2815 event[1] = 65; 2816 (void)memset(&event[2], 0, 65); 2817 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2818 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2819 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2820 event[2] = 3; 2821 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2822 } else { 2823 event[2] = 1; 2824 } 2825 } 2826 hci_emit_event(event, sizeof(event), 0); 2827 break; 2828 } 2829 2830 // note: only needed if user does not provide OOB data 2831 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2832 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2833 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2834 if (conn == NULL) break; 2835 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2836 break; 2837 #endif 2838 #endif 2839 #ifdef ENABLE_BLE 2840 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2841 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2842 // lookup CIG 2843 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2844 if (cig != NULL){ 2845 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2846 uint8_t i = 0; 2847 if (status == ERROR_CODE_SUCCESS){ 2848 // assign CIS handles to pre-allocated CIS 2849 btstack_linked_list_iterator_t it; 2850 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2851 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2852 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2853 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2854 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2855 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2856 iso_stream->con_handle = cis_handle; 2857 cig->cis_con_handles[i] = cis_handle; 2858 i++; 2859 } 2860 } 2861 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2862 hci_emit_cig_created(cig, status); 2863 } else { 2864 hci_emit_cig_created(cig, status); 2865 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2866 } 2867 } 2868 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2869 break; 2870 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2871 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2872 if (status != ERROR_CODE_SUCCESS){ 2873 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2874 } 2875 break; 2876 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2877 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2878 if (status != ERROR_CODE_SUCCESS){ 2879 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2880 } 2881 break; 2882 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2883 // lookup BIG by state 2884 btstack_linked_list_iterator_t it; 2885 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2886 while (btstack_linked_list_iterator_has_next(&it)) { 2887 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2888 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2889 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2890 if (status == ERROR_CODE_SUCCESS){ 2891 big->state_vars.next_bis++; 2892 if (big->state_vars.next_bis == big->num_bis){ 2893 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2894 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2895 } else { 2896 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2897 } 2898 } else { 2899 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2900 big->state_vars.status = status; 2901 } 2902 return; 2903 } 2904 } 2905 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2906 while (btstack_linked_list_iterator_has_next(&it)) { 2907 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2908 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2909 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2910 if (status == ERROR_CODE_SUCCESS){ 2911 big_sync->state_vars.next_bis++; 2912 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2913 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2914 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2915 } else { 2916 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2917 } 2918 } else { 2919 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2920 big_sync->state_vars.status = status; 2921 } 2922 return; 2923 } 2924 } 2925 // Lookup CIS via active group operation 2926 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 2927 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 2928 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2929 2930 // lookup CIS by state 2931 btstack_linked_list_iterator_t it; 2932 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2933 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2934 while (btstack_linked_list_iterator_has_next(&it)){ 2935 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2936 handle = iso_stream->con_handle; 2937 switch (iso_stream->state){ 2938 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 2939 if (status != ERROR_CODE_SUCCESS){ 2940 hci_iso_stream_finalize(iso_stream); 2941 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, status); 2942 break; 2943 } 2944 if (iso_stream->max_sdu_c_to_p > 0){ 2945 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 2946 } else { 2947 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, ERROR_CODE_SUCCESS); 2948 } 2949 break; 2950 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 2951 if (status != ERROR_CODE_SUCCESS){ 2952 hci_iso_stream_finalize(iso_stream); 2953 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, status); 2954 break; 2955 } 2956 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, ERROR_CODE_SUCCESS); 2957 break; 2958 default: 2959 break; 2960 } 2961 } 2962 } else { 2963 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2964 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2965 if (cig != NULL) { 2966 // emit cis created if all ISO Paths have been created 2967 // assume we are central 2968 uint8_t cis_index = cig->state_vars.next_cis >> 1; 2969 uint8_t cis_direction = cig->state_vars.next_cis & 1; 2970 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 2971 // if outgoing has been setup, or incoming was setup but outgoing not required 2972 if ((cis_direction == 1) || (outgoing_needed == false)){ 2973 hci_emit_cis_created(cig->cig_id, cig->cis_con_handles[cis_index], status); 2974 } 2975 // next state 2976 cig->state_vars.next_cis++; 2977 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 2978 } 2979 } 2980 } 2981 break; 2982 } 2983 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 2984 // lookup BIG by state 2985 btstack_linked_list_iterator_t it; 2986 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2987 while (btstack_linked_list_iterator_has_next(&it)) { 2988 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2989 uint8_t big_handle = big_sync->big_handle; 2990 switch (big_sync->state){ 2991 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 2992 btstack_linked_list_iterator_remove(&it); 2993 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 2994 return; 2995 default: 2996 btstack_linked_list_iterator_remove(&it); 2997 hci_emit_big_sync_stopped(big_handle); 2998 return; 2999 } 3000 } 3001 break; 3002 } 3003 #endif 3004 #endif 3005 default: 3006 break; 3007 } 3008 } 3009 3010 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3011 UNUSED(size); 3012 3013 // get num cmd packets - limit to 1 to reduce complexity 3014 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3015 3016 // get opcode and command status 3017 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3018 3019 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3020 uint8_t status = hci_event_command_status_get_status(packet); 3021 #endif 3022 3023 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3024 bd_addr_type_t addr_type; 3025 #endif 3026 3027 switch (opcode){ 3028 #ifdef ENABLE_CLASSIC 3029 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3030 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3031 #endif 3032 #ifdef ENABLE_LE_CENTRAL 3033 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3034 #endif 3035 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3036 addr_type = hci_stack->outgoing_addr_type; 3037 3038 // reset outgoing address info 3039 memset(hci_stack->outgoing_addr, 0, 6); 3040 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3041 3042 // on error 3043 if (status != ERROR_CODE_SUCCESS){ 3044 #ifdef ENABLE_LE_CENTRAL 3045 if (hci_is_le_connection_type(addr_type)){ 3046 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3047 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3048 } 3049 #endif 3050 // error => outgoing connection failed 3051 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(hci_stack->outgoing_addr, addr_type); 3052 if (conn != NULL){ 3053 hci_handle_connection_failed(conn, status); 3054 } 3055 } 3056 break; 3057 #endif 3058 #ifdef ENABLE_CLASSIC 3059 case HCI_OPCODE_HCI_INQUIRY: 3060 if (status == ERROR_CODE_SUCCESS) { 3061 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3062 } else { 3063 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3064 } 3065 break; 3066 #endif 3067 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3068 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3069 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3070 if (status == ERROR_CODE_SUCCESS){ 3071 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3072 } else { 3073 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3074 } 3075 break; 3076 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3077 default: 3078 break; 3079 } 3080 } 3081 3082 #ifdef ENABLE_BLE 3083 static void event_handle_le_connection_complete(const uint8_t * packet){ 3084 bd_addr_t addr; 3085 bd_addr_type_t addr_type; 3086 hci_connection_t * conn; 3087 3088 // Connection management 3089 reverse_bd_addr(&packet[8], addr); 3090 addr_type = (bd_addr_type_t)packet[7]; 3091 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 3092 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3093 3094 #ifdef ENABLE_LE_CENTRAL 3095 // handle error: error is reported only to the initiator -> outgoing connection 3096 if (packet[3]){ 3097 3098 // handle cancelled outgoing connection 3099 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3100 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3101 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3102 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3103 // reset state 3104 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3105 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3106 // get outgoing connection conn struct for direct connect 3107 conn = gap_get_outgoing_connection(); 3108 } 3109 3110 // outgoing le connection establishment is done 3111 if (conn){ 3112 // remove entry 3113 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3114 btstack_memory_hci_connection_free( conn ); 3115 } 3116 return; 3117 } 3118 #endif 3119 3120 // on success, both hosts receive connection complete event 3121 if (packet[6] == HCI_ROLE_MASTER){ 3122 #ifdef ENABLE_LE_CENTRAL 3123 // if we're master on an le connection, it was an outgoing connection and we're done with it 3124 // note: no hci_connection_t object exists yet for connect with whitelist 3125 if (hci_is_le_connection_type(addr_type)){ 3126 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3127 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3128 } 3129 #endif 3130 } else { 3131 #ifdef ENABLE_LE_PERIPHERAL 3132 // if we're slave, it was an incoming connection, advertisements have stopped 3133 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3134 #endif 3135 } 3136 3137 // LE connections are auto-accepted, so just create a connection if there isn't one already 3138 if (!conn){ 3139 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3140 } 3141 3142 // no memory, sorry. 3143 if (!conn){ 3144 return; 3145 } 3146 3147 conn->state = OPEN; 3148 conn->role = packet[6]; 3149 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3150 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3151 3152 #ifdef ENABLE_LE_PERIPHERAL 3153 if (packet[6] == HCI_ROLE_SLAVE){ 3154 hci_update_advertisements_enabled_for_current_roles(); 3155 } 3156 #endif 3157 3158 // init unenhanced att bearer mtu 3159 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3160 conn->att_connection.mtu_exchanged = false; 3161 3162 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3163 3164 // restart timer 3165 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3166 // btstack_run_loop_add_timer(&conn->timeout); 3167 3168 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3169 3170 hci_emit_nr_connections_changed(); 3171 } 3172 #endif 3173 3174 #ifdef ENABLE_CLASSIC 3175 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){ 3176 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3177 // LEVEL_4 is tested by l2cap 3178 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3179 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3180 if (level >= LEVEL_3){ 3181 // MITM not possible without keyboard or display 3182 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3183 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3184 3185 // MITM possible if one side has keyboard and the other has keyboard or display 3186 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3187 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3188 3189 // MITM not possible if one side has only display and other side has no keyboard 3190 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3191 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3192 } 3193 // LEVEL 2 requires SSP, which is a given 3194 return true; 3195 } 3196 3197 static bool btstack_is_null(uint8_t * data, uint16_t size){ 3198 uint16_t i; 3199 for (i=0; i < size ; i++){ 3200 if (data[i] != 0) { 3201 return false; 3202 } 3203 } 3204 return true; 3205 } 3206 3207 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3208 // get requested security level 3209 gap_security_level_t requested_security_level = conn->requested_security_level; 3210 if (hci_stack->gap_secure_connections_only_mode){ 3211 requested_security_level = LEVEL_4; 3212 } 3213 3214 // assess security: LEVEL 4 requires SC 3215 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3216 if ((requested_security_level == LEVEL_4) && 3217 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3218 !hci_remote_sc_enabled(conn)){ 3219 log_info("Level 4 required, but SC not supported -> abort"); 3220 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3221 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3222 return; 3223 } 3224 3225 // assess security based on io capabilities 3226 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3227 // responder: fully validate io caps of both sides as well as OOB data 3228 bool security_possible = false; 3229 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3230 3231 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3232 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3233 // so we merge the OOB data availability 3234 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3235 if (conn->classic_oob_c_192 != NULL){ 3236 have_oob_data |= 1; 3237 } 3238 if (conn->classic_oob_c_256 != NULL){ 3239 have_oob_data |= 2; 3240 } 3241 // for up to Level 3, either P-192 as well as P-256 will do 3242 // 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 3243 // if remote does not SC, we should not receive P-256 data either 3244 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3245 security_possible = true; 3246 } 3247 // for Level 4, P-256 is needed 3248 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3249 security_possible = true; 3250 } 3251 #endif 3252 3253 if (security_possible == false){ 3254 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3255 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3256 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3257 return; 3258 } 3259 } else { 3260 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3261 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3262 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3263 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3264 log_info("Level 3+ required, but no input/output -> abort"); 3265 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3266 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3267 return; 3268 } 3269 #endif 3270 #endif 3271 } 3272 3273 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3274 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3275 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3276 } else { 3277 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3278 } 3279 #endif 3280 } 3281 3282 #endif 3283 3284 static void event_handler(uint8_t *packet, uint16_t size){ 3285 3286 uint16_t event_length = packet[1]; 3287 3288 // assert packet is complete 3289 if (size != (event_length + 2u)){ 3290 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3291 return; 3292 } 3293 3294 hci_con_handle_t handle; 3295 hci_connection_t * conn; 3296 int i; 3297 3298 #ifdef ENABLE_CLASSIC 3299 hci_link_type_t link_type; 3300 bd_addr_t addr; 3301 bd_addr_type_t addr_type; 3302 #endif 3303 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3304 hci_iso_stream_t * iso_stream; 3305 le_audio_big_t * big; 3306 le_audio_big_sync_t * big_sync; 3307 #endif 3308 3309 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3310 3311 switch (hci_event_packet_get_type(packet)) { 3312 3313 case HCI_EVENT_COMMAND_COMPLETE: 3314 handle_command_complete_event(packet, size); 3315 break; 3316 3317 case HCI_EVENT_COMMAND_STATUS: 3318 handle_command_status_event(packet, size); 3319 break; 3320 3321 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3322 if (size < 3) return; 3323 uint16_t num_handles = packet[2]; 3324 if (size != (3u + num_handles * 4u)) return; 3325 #ifdef ENABLE_CLASSIC 3326 bool notify_sco = false; 3327 #endif 3328 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3329 bool notify_iso = false; 3330 #endif 3331 uint16_t offset = 3; 3332 for (i=0; i<num_handles;i++){ 3333 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3334 offset += 2u; 3335 uint16_t num_packets = little_endian_read_16(packet, offset); 3336 offset += 2u; 3337 3338 conn = hci_connection_for_handle(handle); 3339 if (conn != NULL) { 3340 3341 if (conn->num_packets_sent >= num_packets) { 3342 conn->num_packets_sent -= num_packets; 3343 } else { 3344 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3345 conn->num_packets_sent = 0; 3346 } 3347 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3348 #ifdef ENABLE_CLASSIC 3349 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3350 notify_sco = true; 3351 } 3352 #endif 3353 } 3354 3355 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3356 hci_controller_dump_packets(); 3357 #endif 3358 3359 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3360 if (conn == NULL){ 3361 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3362 if (iso_stream != NULL){ 3363 if (iso_stream->num_packets_sent >= num_packets) { 3364 iso_stream->num_packets_sent -= num_packets; 3365 } else { 3366 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3367 iso_stream->num_packets_sent = 0; 3368 } 3369 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3370 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3371 if (big != NULL){ 3372 big->num_completed_timestamp_current_valid = true; 3373 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3374 } 3375 } 3376 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3377 num_packets, handle, iso_stream->num_packets_sent); 3378 notify_iso = true; 3379 } 3380 } 3381 #endif 3382 } 3383 3384 #ifdef ENABLE_CLASSIC 3385 if (notify_sco){ 3386 hci_notify_if_sco_can_send_now(); 3387 } 3388 #endif 3389 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3390 if (notify_iso){ 3391 hci_iso_notify_can_send_now(); 3392 } 3393 #endif 3394 break; 3395 } 3396 3397 #ifdef ENABLE_CLASSIC 3398 case HCI_EVENT_FLUSH_OCCURRED: 3399 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3400 handle = hci_event_flush_occurred_get_handle(packet); 3401 conn = hci_connection_for_handle(handle); 3402 if (conn) { 3403 log_info("Flush occurred, disconnect 0x%04x", handle); 3404 conn->state = SEND_DISCONNECT; 3405 } 3406 break; 3407 3408 case HCI_EVENT_INQUIRY_COMPLETE: 3409 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3410 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3411 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3412 hci_emit_event(event, sizeof(event), 1); 3413 } 3414 break; 3415 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3416 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3417 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3418 } 3419 break; 3420 case HCI_EVENT_CONNECTION_REQUEST: 3421 reverse_bd_addr(&packet[2], addr); 3422 link_type = (hci_link_type_t) packet[11]; 3423 3424 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3425 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3426 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3427 bd_addr_copy(hci_stack->decline_addr, addr); 3428 break; 3429 } 3430 3431 if (hci_stack->gap_classic_accept_callback != NULL){ 3432 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3433 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3434 bd_addr_copy(hci_stack->decline_addr, addr); 3435 break; 3436 } 3437 } 3438 3439 // TODO: eval COD 8-10 3440 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3441 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3442 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3443 if (!conn) { 3444 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3445 } 3446 if (!conn) { 3447 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3448 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3449 bd_addr_copy(hci_stack->decline_addr, addr); 3450 hci_run(); 3451 // avoid event to higher layer 3452 return; 3453 } 3454 conn->role = HCI_ROLE_SLAVE; 3455 conn->state = RECEIVED_CONNECTION_REQUEST; 3456 // store info about eSCO 3457 if (link_type == HCI_LINK_TYPE_ESCO){ 3458 conn->remote_supported_features[0] |= 1; 3459 } 3460 hci_run(); 3461 break; 3462 3463 case HCI_EVENT_CONNECTION_COMPLETE: 3464 // Connection management 3465 reverse_bd_addr(&packet[5], addr); 3466 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3467 addr_type = BD_ADDR_TYPE_ACL; 3468 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3469 if (conn) { 3470 if (!packet[2]){ 3471 conn->state = OPEN; 3472 conn->con_handle = little_endian_read_16(packet, 3); 3473 3474 // trigger write supervision timeout if we're master 3475 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3476 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3477 } 3478 3479 // trigger write automatic flush timeout 3480 if (hci_stack->automatic_flush_timeout != 0){ 3481 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3482 } 3483 3484 // restart timer 3485 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3486 btstack_run_loop_add_timer(&conn->timeout); 3487 3488 // trigger remote features for dedicated bonding 3489 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3490 hci_trigger_remote_features_for_connection(conn); 3491 } 3492 3493 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3494 3495 hci_emit_nr_connections_changed(); 3496 } else { 3497 // connection failed 3498 hci_handle_connection_failed(conn, packet[2]); 3499 } 3500 } 3501 break; 3502 3503 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3504 reverse_bd_addr(&packet[5], addr); 3505 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3506 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3507 if (packet[2]){ 3508 // connection failed 3509 if (conn){ 3510 hci_handle_connection_failed(conn, packet[2]); 3511 } 3512 break; 3513 } 3514 if (!conn) { 3515 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3516 } 3517 if (!conn) { 3518 break; 3519 } 3520 conn->state = OPEN; 3521 conn->con_handle = little_endian_read_16(packet, 3); 3522 3523 #ifdef ENABLE_SCO_OVER_HCI 3524 // update SCO 3525 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3526 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3527 } 3528 // trigger can send now 3529 if (hci_have_usb_transport()){ 3530 hci_stack->sco_can_send_now = true; 3531 } 3532 #endif 3533 #ifdef HAVE_SCO_TRANSPORT 3534 // configure sco transport 3535 if (hci_stack->sco_transport != NULL){ 3536 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3537 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3538 } 3539 #endif 3540 break; 3541 3542 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3543 handle = little_endian_read_16(packet, 3); 3544 conn = hci_connection_for_handle(handle); 3545 if (!conn) break; 3546 if (!packet[2]){ 3547 const uint8_t * features = &packet[5]; 3548 hci_handle_remote_features_page_0(conn, features); 3549 3550 // read extended features if possible 3551 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3552 && ((conn->remote_supported_features[0] & 2) != 0)) { 3553 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3554 break; 3555 } 3556 } 3557 hci_handle_remote_features_received(conn); 3558 break; 3559 3560 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3561 handle = little_endian_read_16(packet, 3); 3562 conn = hci_connection_for_handle(handle); 3563 if (!conn) break; 3564 // status = ok, page = 1 3565 if (!packet[2]) { 3566 uint8_t page_number = packet[5]; 3567 uint8_t maximum_page_number = packet[6]; 3568 const uint8_t * features = &packet[7]; 3569 bool done = false; 3570 switch (page_number){ 3571 case 1: 3572 hci_handle_remote_features_page_1(conn, features); 3573 if (maximum_page_number >= 2){ 3574 // get Secure Connections (Controller) from Page 2 if available 3575 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3576 } else { 3577 // otherwise, assume SC (Controller) == SC (Host) 3578 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3579 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3580 } 3581 done = true; 3582 } 3583 break; 3584 case 2: 3585 hci_handle_remote_features_page_2(conn, features); 3586 done = true; 3587 break; 3588 default: 3589 break; 3590 } 3591 if (!done) break; 3592 } 3593 hci_handle_remote_features_received(conn); 3594 break; 3595 3596 case HCI_EVENT_LINK_KEY_REQUEST: 3597 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3598 hci_event_link_key_request_get_bd_addr(packet, addr); 3599 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3600 if (!conn) break; 3601 3602 // lookup link key in db if not cached 3603 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3604 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3605 } 3606 3607 // response sent by hci_run() 3608 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3609 #endif 3610 break; 3611 3612 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3613 hci_event_link_key_request_get_bd_addr(packet, addr); 3614 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3615 if (!conn) break; 3616 3617 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3618 3619 // CVE-2020-26555: ignore NULL link key 3620 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3621 if (btstack_is_null(&packet[8], 16)) break; 3622 3623 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3624 // Change Connection Encryption keeps link key type 3625 if (link_key_type != CHANGED_COMBINATION_KEY){ 3626 conn->link_key_type = link_key_type; 3627 } 3628 3629 // cache link key. link keys stored in little-endian format for legacy reasons 3630 memcpy(&conn->link_key, &packet[8], 16); 3631 3632 // only store link key: 3633 // - if bondable enabled 3634 if (hci_stack->bondable == false) break; 3635 // - if security level sufficient 3636 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3637 // - for SSP, also check if remote side requested bonding as well 3638 if (conn->link_key_type != COMBINATION_KEY){ 3639 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3640 if (!remote_bonding){ 3641 break; 3642 } 3643 } 3644 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3645 break; 3646 } 3647 3648 case HCI_EVENT_PIN_CODE_REQUEST: 3649 hci_event_pin_code_request_get_bd_addr(packet, addr); 3650 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3651 if (!conn) break; 3652 3653 hci_pairing_started(conn, false); 3654 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3655 if (!hci_stack->bondable ){ 3656 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3657 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3658 hci_run(); 3659 return; 3660 } 3661 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3662 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3663 log_info("Level 4 required, but SC not supported -> abort"); 3664 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3665 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3666 hci_run(); 3667 return; 3668 } 3669 break; 3670 3671 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3672 hci_event_io_capability_response_get_bd_addr(packet, addr); 3673 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3674 if (!conn) break; 3675 3676 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3677 hci_pairing_started(conn, true); 3678 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3679 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3680 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3681 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3682 #endif 3683 break; 3684 3685 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3686 hci_event_io_capability_response_get_bd_addr(packet, addr); 3687 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3688 if (!conn) break; 3689 3690 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3691 hci_connection_timestamp(conn); 3692 hci_pairing_started(conn, true); 3693 break; 3694 3695 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3696 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3697 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3698 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3699 if (!conn) break; 3700 3701 hci_connection_timestamp(conn); 3702 3703 hci_pairing_started(conn, true); 3704 3705 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3706 break; 3707 #endif 3708 3709 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3710 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3711 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3712 if (!conn) break; 3713 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3714 if (hci_stack->ssp_auto_accept){ 3715 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3716 }; 3717 } else { 3718 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3719 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3720 // don't forward event to app 3721 hci_run(); 3722 return; 3723 } 3724 break; 3725 3726 case HCI_EVENT_USER_PASSKEY_REQUEST: 3727 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3728 if (hci_stack->ssp_auto_accept){ 3729 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3730 }; 3731 break; 3732 3733 case HCI_EVENT_MODE_CHANGE: 3734 handle = hci_event_mode_change_get_handle(packet); 3735 conn = hci_connection_for_handle(handle); 3736 if (!conn) break; 3737 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3738 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3739 break; 3740 #endif 3741 3742 case HCI_EVENT_ENCRYPTION_CHANGE: 3743 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3744 handle = hci_event_encryption_change_get_connection_handle(packet); 3745 conn = hci_connection_for_handle(handle); 3746 if (!conn) break; 3747 if (hci_event_encryption_change_get_status(packet) == 0u) { 3748 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3749 if (encryption_enabled){ 3750 if (hci_is_le_connection(conn)){ 3751 // For LE, we accept connection as encrypted 3752 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3753 } 3754 #ifdef ENABLE_CLASSIC 3755 else { 3756 3757 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3758 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3759 bool connected_uses_aes_ccm = encryption_enabled == 2; 3760 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3761 log_info("SC during pairing, but only E0 now -> abort"); 3762 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3763 break; 3764 } 3765 3766 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3767 if (connected_uses_aes_ccm){ 3768 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3769 } 3770 3771 #ifdef ENABLE_TESTING_SUPPORT 3772 // work around for issue with PTS dongle 3773 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3774 #endif 3775 // validate encryption key size 3776 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3777 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3778 // already got encryption key size 3779 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3780 } else { 3781 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3782 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3783 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3784 } else { 3785 // if not, pretend everything is perfect 3786 hci_handle_read_encryption_key_size_complete(conn, 16); 3787 } 3788 } 3789 } 3790 #endif 3791 } else { 3792 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3793 } 3794 } else { 3795 uint8_t status = hci_event_encryption_change_get_status(packet); 3796 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3797 conn->bonding_flags &= ~BONDING_DEDICATED; 3798 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3799 conn->bonding_status = status; 3800 } 3801 } 3802 3803 break; 3804 3805 #ifdef ENABLE_CLASSIC 3806 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3807 handle = hci_event_authentication_complete_get_connection_handle(packet); 3808 conn = hci_connection_for_handle(handle); 3809 if (!conn) break; 3810 3811 // clear authentication active flag 3812 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3813 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3814 3815 // authenticated only if auth status == 0 3816 if (hci_event_authentication_complete_get_status(packet) == 0){ 3817 // authenticated 3818 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3819 3820 // If not already encrypted, start encryption 3821 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3822 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3823 break; 3824 } 3825 } 3826 3827 // emit updated security level 3828 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3829 break; 3830 3831 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3832 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3833 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3834 if (!conn) break; 3835 3836 // treat successfully paired connection as authenticated 3837 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3838 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3839 } 3840 3841 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3842 break; 3843 #endif 3844 3845 // HCI_EVENT_DISCONNECTION_COMPLETE 3846 // has been split, to first notify stack before shutting connection down 3847 // see end of function, too. 3848 case HCI_EVENT_DISCONNECTION_COMPLETE: 3849 if (packet[2]) break; // status != 0 3850 handle = little_endian_read_16(packet, 3); 3851 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3852 if (hci_stack->acl_fragmentation_total_size > 0u) { 3853 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3854 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3855 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3856 hci_stack->acl_fragmentation_total_size = 0; 3857 hci_stack->acl_fragmentation_pos = 0; 3858 if (release_buffer){ 3859 hci_release_packet_buffer(); 3860 } 3861 } 3862 } 3863 3864 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3865 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3866 if (hci_stack->iso_fragmentation_total_size > 0u) { 3867 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3868 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3869 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3870 hci_stack->iso_fragmentation_total_size = 0; 3871 hci_stack->iso_fragmentation_pos = 0; 3872 if (release_buffer){ 3873 hci_release_packet_buffer(); 3874 } 3875 } 3876 } 3877 3878 // finalize iso stream if handle matches 3879 iso_stream = hci_iso_stream_for_con_handle(handle); 3880 if (iso_stream != NULL){ 3881 hci_iso_stream_finalize(iso_stream); 3882 break; 3883 } 3884 #endif 3885 3886 conn = hci_connection_for_handle(handle); 3887 if (!conn) break; 3888 #ifdef ENABLE_CLASSIC 3889 // pairing failed if it was ongoing 3890 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3891 #endif 3892 3893 // emit dedicatd bonding event 3894 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3895 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3896 } 3897 3898 // mark connection for shutdown, stop timers, reset state 3899 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3900 hci_connection_stop_timer(conn); 3901 hci_connection_init(conn); 3902 3903 #ifdef ENABLE_BLE 3904 #ifdef ENABLE_LE_PERIPHERAL 3905 // re-enable advertisements for le connections if active 3906 if (hci_is_le_connection(conn)){ 3907 hci_update_advertisements_enabled_for_current_roles(); 3908 } 3909 #endif 3910 #endif 3911 break; 3912 3913 case HCI_EVENT_HARDWARE_ERROR: 3914 log_error("Hardware Error: 0x%02x", packet[2]); 3915 if (hci_stack->hardware_error_callback){ 3916 (*hci_stack->hardware_error_callback)(packet[2]); 3917 } else { 3918 // if no special requests, just reboot stack 3919 hci_power_control_off(); 3920 hci_power_control_on(); 3921 } 3922 break; 3923 3924 #ifdef ENABLE_CLASSIC 3925 case HCI_EVENT_ROLE_CHANGE: 3926 if (packet[2]) break; // status != 0 3927 reverse_bd_addr(&packet[3], addr); 3928 addr_type = BD_ADDR_TYPE_ACL; 3929 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3930 if (!conn) break; 3931 conn->role = packet[9]; 3932 break; 3933 #endif 3934 3935 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3936 // release packet buffer only for asynchronous transport and if there are not further fragments 3937 if (hci_transport_synchronous()) { 3938 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3939 return; // instead of break: to avoid re-entering hci_run() 3940 } 3941 hci_stack->acl_fragmentation_tx_active = 0; 3942 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3943 hci_stack->iso_fragmentation_tx_active = 0; 3944 if (hci_stack->iso_fragmentation_total_size) break; 3945 #endif 3946 if (hci_stack->acl_fragmentation_total_size) break; 3947 hci_release_packet_buffer(); 3948 3949 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3950 hci_iso_notify_can_send_now(); 3951 #endif 3952 // L2CAP receives this event via the hci_emit_event below 3953 3954 #ifdef ENABLE_CLASSIC 3955 // For SCO, we do the can_send_now_check here 3956 hci_notify_if_sco_can_send_now(); 3957 #endif 3958 break; 3959 3960 #ifdef ENABLE_CLASSIC 3961 case HCI_EVENT_SCO_CAN_SEND_NOW: 3962 // For SCO, we do the can_send_now_check here 3963 hci_stack->sco_can_send_now = true; 3964 hci_notify_if_sco_can_send_now(); 3965 return; 3966 3967 // explode inquriy results for easier consumption 3968 case HCI_EVENT_INQUIRY_RESULT: 3969 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 3970 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 3971 gap_inquiry_explode(packet, size); 3972 break; 3973 #endif 3974 3975 #ifdef ENABLE_BLE 3976 case HCI_EVENT_LE_META: 3977 switch (packet[2]){ 3978 #ifdef ENABLE_LE_CENTRAL 3979 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 3980 if (!hci_stack->le_scanning_enabled) break; 3981 le_handle_advertisement_report(packet, size); 3982 break; 3983 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3984 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 3985 if (!hci_stack->le_scanning_enabled) break; 3986 le_handle_extended_advertisement_report(packet, size); 3987 break; 3988 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 3989 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 3990 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 3991 break; 3992 #endif 3993 #endif 3994 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3995 event_handle_le_connection_complete(packet); 3996 break; 3997 3998 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 3999 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4000 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4001 conn = hci_connection_for_handle(handle); 4002 if (!conn) break; 4003 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4004 break; 4005 4006 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4007 // connection 4008 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4009 conn = hci_connection_for_handle(handle); 4010 if (conn) { 4011 // read arguments 4012 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4013 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4014 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4015 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4016 4017 // validate against current connection parameter range 4018 le_connection_parameter_range_t existing_range; 4019 gap_get_connection_parameter_range(&existing_range); 4020 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4021 if (update_parameter){ 4022 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4023 conn->le_conn_interval_min = le_conn_interval_min; 4024 conn->le_conn_interval_max = le_conn_interval_max; 4025 conn->le_conn_latency = le_conn_latency; 4026 conn->le_supervision_timeout = le_supervision_timeout; 4027 } else { 4028 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4029 } 4030 } 4031 break; 4032 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4033 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4034 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4035 conn = hci_connection_for_handle(handle); 4036 if (conn) { 4037 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4038 } 4039 break; 4040 #endif 4041 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4042 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4043 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4044 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4045 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4046 iso_stream = hci_iso_stream_for_con_handle(handle); 4047 btstack_assert(iso_stream != NULL); 4048 // track SDU 4049 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4050 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4051 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4052 // CIS Accept by Peripheral 4053 if (status == ERROR_CODE_SUCCESS){ 4054 if (iso_stream->max_sdu_p_to_c > 0){ 4055 // we're peripheral and we will send data 4056 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4057 } else { 4058 // we're peripheral and we will only receive data 4059 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4060 } 4061 } else { 4062 hci_iso_stream_finalize(iso_stream); 4063 hci_emit_cis_created(HCI_ISO_GROUP_ID_INVALID, handle, status); 4064 } 4065 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4066 } else { 4067 // CIG Setup by Central 4068 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4069 btstack_assert(cig != NULL); 4070 // update iso stream state 4071 if (status == ERROR_CODE_SUCCESS){ 4072 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4073 } else { 4074 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4075 } 4076 // update cig state 4077 uint8_t i; 4078 for (i=0;i<cig->num_cis;i++){ 4079 if (cig->cis_con_handles[i] == handle){ 4080 cig->cis_setup_active[i] = false; 4081 if (status == ERROR_CODE_SUCCESS){ 4082 cig->cis_setup_active[i] = false; 4083 cig->cis_established[i] = true; 4084 } else { 4085 hci_emit_cis_created(cig->cig_id, handle, status); 4086 } 4087 } 4088 } 4089 4090 // trigger iso path setup if complete 4091 bool setup_active = false; 4092 for (i=0;i<cig->num_cis;i++){ 4093 setup_active |= cig->cis_setup_active[i]; 4094 } 4095 if (setup_active == false){ 4096 cig->state_vars.next_cis = 0; 4097 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4098 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4099 } 4100 } 4101 } 4102 break; 4103 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4104 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4105 big = hci_big_for_handle(packet[4]); 4106 if (big != NULL){ 4107 uint8_t status = packet[3]; 4108 if (status == ERROR_CODE_SUCCESS){ 4109 // store bis_con_handles and trigger iso path setup 4110 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4111 uint8_t i; 4112 for (i=0;i<num_bis;i++){ 4113 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4114 big->bis_con_handles[i] = bis_handle; 4115 // assign bis handle 4116 btstack_linked_list_iterator_t it; 4117 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4118 while (btstack_linked_list_iterator_has_next(&it)){ 4119 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4120 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4121 (iso_stream->group_id == big->big_handle)){ 4122 iso_stream->con_handle = bis_handle; 4123 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4124 break; 4125 } 4126 } 4127 } 4128 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4129 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4130 big->state_vars.next_bis = 0; 4131 } 4132 } else { 4133 // create BIG failed or has been stopped by us 4134 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4135 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4136 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4137 hci_emit_big_created(big, status); 4138 } else { 4139 hci_emit_big_terminated(big); 4140 } 4141 } 4142 } 4143 break; 4144 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4145 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4146 if (big != NULL){ 4147 // finalize associated ISO streams 4148 btstack_linked_list_iterator_t it; 4149 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4150 while (btstack_linked_list_iterator_has_next(&it)){ 4151 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4152 if (iso_stream->group_id == big->big_handle){ 4153 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->con_handle); 4154 btstack_linked_list_iterator_remove(&it); 4155 btstack_memory_hci_iso_stream_free(iso_stream); 4156 } 4157 } 4158 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4159 switch (big->state){ 4160 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4161 hci_emit_big_created(big, big->state_vars.status); 4162 break; 4163 default: 4164 hci_emit_big_terminated(big); 4165 break; 4166 } 4167 } 4168 break; 4169 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4170 big_sync = hci_big_sync_for_handle(packet[4]); 4171 if (big_sync != NULL){ 4172 uint8_t status = packet[3]; 4173 uint8_t big_handle = packet[4]; 4174 if (status == ERROR_CODE_SUCCESS){ 4175 // store bis_con_handles and trigger iso path setup 4176 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4177 uint8_t i; 4178 for (i=0;i<num_bis;i++){ 4179 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4180 } 4181 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4182 // trigger iso path setup 4183 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4184 big_sync->state_vars.next_bis = 0; 4185 } 4186 } else { 4187 // create BIG Sync failed or has been stopped by us 4188 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4189 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4190 hci_emit_big_sync_created(big_sync, status); 4191 } else { 4192 hci_emit_big_sync_stopped(big_handle); 4193 } 4194 } 4195 } 4196 break; 4197 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4198 big_sync = hci_big_sync_for_handle(packet[4]); 4199 if (big_sync != NULL){ 4200 uint8_t big_handle = packet[4]; 4201 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4202 hci_emit_big_sync_stopped(big_handle); 4203 } 4204 break; 4205 #endif 4206 default: 4207 break; 4208 } 4209 break; 4210 #endif 4211 case HCI_EVENT_VENDOR_SPECIFIC: 4212 // Vendor specific commands often create vendor specific event instead of num completed packets 4213 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4214 switch (hci_stack->manufacturer){ 4215 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4216 hci_stack->num_cmd_packets = 1; 4217 break; 4218 default: 4219 break; 4220 } 4221 break; 4222 default: 4223 break; 4224 } 4225 4226 handle_event_for_current_stack_state(packet, size); 4227 4228 // notify upper stack 4229 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4230 4231 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4232 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4233 handle = little_endian_read_16(packet, 3); 4234 hci_connection_t * aConn = hci_connection_for_handle(handle); 4235 // discard connection if app did not trigger a reconnect in the event handler 4236 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4237 hci_shutdown_connection(aConn); 4238 } 4239 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4240 hci_controller_dump_packets(); 4241 #endif 4242 } 4243 4244 // execute main loop 4245 hci_run(); 4246 } 4247 4248 #ifdef ENABLE_CLASSIC 4249 4250 #ifdef ENABLE_SCO_OVER_HCI 4251 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4252 static void sco_schedule_tx(hci_connection_t * conn); 4253 4254 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4255 log_debug("SCO TX Timeout"); 4256 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4257 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4258 if (!conn) return; 4259 4260 // trigger send 4261 conn->sco_tx_ready = 1; 4262 // extra packet if CVSD but SCO buffer is too short 4263 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4264 conn->sco_tx_ready++; 4265 } 4266 hci_notify_if_sco_can_send_now(); 4267 } 4268 4269 4270 #define SCO_TX_AFTER_RX_MS (6) 4271 4272 static void sco_schedule_tx(hci_connection_t * conn){ 4273 4274 uint32_t now = btstack_run_loop_get_time_ms(); 4275 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4276 int time_delta_ms = sco_tx_ms - now; 4277 4278 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4279 4280 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4281 btstack_run_loop_remove_timer(timer); 4282 btstack_run_loop_set_timer(timer, time_delta_ms); 4283 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4284 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4285 btstack_run_loop_add_timer(timer); 4286 } 4287 #endif 4288 4289 static void sco_handler(uint8_t * packet, uint16_t size){ 4290 // lookup connection struct 4291 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4292 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4293 if (!conn) return; 4294 4295 #ifdef ENABLE_SCO_OVER_HCI 4296 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4297 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4298 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4299 packet[2] = 0x3c; 4300 memmove(&packet[3], &packet[23], 63); 4301 size = 63; 4302 } 4303 } 4304 4305 if (hci_have_usb_transport()){ 4306 // Nothing to do 4307 } else { 4308 // 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); 4309 if (hci_stack->synchronous_flow_control_enabled == 0){ 4310 uint32_t now = btstack_run_loop_get_time_ms(); 4311 4312 if (!conn->sco_rx_valid){ 4313 // ignore first 10 packets 4314 conn->sco_rx_count++; 4315 // log_debug("sco rx count %u", conn->sco_rx_count); 4316 if (conn->sco_rx_count == 10) { 4317 // use first timestamp as is and pretent it just started 4318 conn->sco_rx_ms = now; 4319 conn->sco_rx_valid = 1; 4320 conn->sco_rx_count = 0; 4321 sco_schedule_tx(conn); 4322 } 4323 } else { 4324 // track expected arrival timme 4325 conn->sco_rx_count++; 4326 conn->sco_rx_ms += 7; 4327 int delta = (int32_t) (now - conn->sco_rx_ms); 4328 if (delta > 0){ 4329 conn->sco_rx_ms++; 4330 } 4331 // log_debug("sco rx %u", conn->sco_rx_ms); 4332 sco_schedule_tx(conn); 4333 } 4334 } 4335 } 4336 #endif 4337 4338 // deliver to app 4339 if (hci_stack->sco_packet_handler) { 4340 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4341 } 4342 4343 #ifdef HAVE_SCO_TRANSPORT 4344 // We can send one packet for each received packet 4345 conn->sco_tx_ready++; 4346 hci_notify_if_sco_can_send_now(); 4347 #endif 4348 4349 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4350 conn->num_packets_completed++; 4351 hci_stack->host_completed_packets = 1; 4352 hci_run(); 4353 #endif 4354 } 4355 #endif 4356 4357 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4358 hci_dump_packet(packet_type, 1, packet, size); 4359 switch (packet_type) { 4360 case HCI_EVENT_PACKET: 4361 event_handler(packet, size); 4362 break; 4363 case HCI_ACL_DATA_PACKET: 4364 acl_handler(packet, size); 4365 break; 4366 #ifdef ENABLE_CLASSIC 4367 case HCI_SCO_DATA_PACKET: 4368 sco_handler(packet, size); 4369 break; 4370 #endif 4371 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4372 case HCI_ISO_DATA_PACKET: 4373 hci_iso_packet_handler(packet, size); 4374 break; 4375 #endif 4376 default: 4377 break; 4378 } 4379 } 4380 4381 /** 4382 * @brief Add event packet handler. 4383 */ 4384 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4385 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4386 } 4387 4388 /** 4389 * @brief Remove event packet handler. 4390 */ 4391 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4392 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4393 } 4394 4395 /** Register HCI packet handlers */ 4396 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4397 hci_stack->acl_packet_handler = handler; 4398 } 4399 4400 #ifdef ENABLE_CLASSIC 4401 /** 4402 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4403 */ 4404 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4405 hci_stack->sco_packet_handler = handler; 4406 } 4407 #endif 4408 4409 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4410 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4411 hci_stack->iso_packet_handler = handler; 4412 } 4413 #endif 4414 4415 static void hci_state_reset(void){ 4416 // no connections yet 4417 hci_stack->connections = NULL; 4418 4419 // keep discoverable/connectable as this has been requested by the client(s) 4420 // hci_stack->discoverable = 0; 4421 // hci_stack->connectable = 0; 4422 // hci_stack->bondable = 1; 4423 // hci_stack->own_addr_type = 0; 4424 4425 // buffer is free 4426 hci_stack->hci_packet_buffer_reserved = false; 4427 4428 // no pending cmds 4429 hci_stack->decline_reason = 0; 4430 4431 hci_stack->secure_connections_active = false; 4432 4433 #ifdef ENABLE_CLASSIC 4434 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4435 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4436 4437 hci_stack->gap_tasks_classic = 4438 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4439 GAP_TASK_SET_CLASS_OF_DEVICE | 4440 GAP_TASK_SET_LOCAL_NAME | 4441 GAP_TASK_SET_EIR_DATA | 4442 GAP_TASK_WRITE_SCAN_ENABLE | 4443 GAP_TASK_WRITE_PAGE_TIMEOUT; 4444 #endif 4445 4446 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4447 hci_stack->classic_read_local_oob_data = false; 4448 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4449 #endif 4450 4451 // LE 4452 #ifdef ENABLE_BLE 4453 memset(hci_stack->le_random_address, 0, 6); 4454 hci_stack->le_random_address_set = 0; 4455 #endif 4456 #ifdef ENABLE_LE_CENTRAL 4457 hci_stack->le_scanning_active = false; 4458 hci_stack->le_scanning_param_update = true; 4459 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4460 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4461 hci_stack->le_whitelist_capacity = 0; 4462 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4463 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4464 #endif 4465 #endif 4466 #ifdef ENABLE_LE_PERIPHERAL 4467 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4468 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4469 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4470 } 4471 if (hci_stack->le_advertisements_data != NULL){ 4472 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4473 } 4474 #endif 4475 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4476 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4477 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4478 #endif 4479 } 4480 4481 #ifdef ENABLE_CLASSIC 4482 /** 4483 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4484 */ 4485 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4486 // store and open remote device db 4487 hci_stack->link_key_db = link_key_db; 4488 if (hci_stack->link_key_db) { 4489 hci_stack->link_key_db->open(); 4490 } 4491 } 4492 #endif 4493 4494 void hci_init(const hci_transport_t *transport, const void *config){ 4495 4496 #ifdef HAVE_MALLOC 4497 if (!hci_stack) { 4498 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4499 } 4500 #else 4501 hci_stack = &hci_stack_static; 4502 #endif 4503 memset(hci_stack, 0, sizeof(hci_stack_t)); 4504 4505 // reference to use transport layer implementation 4506 hci_stack->hci_transport = transport; 4507 4508 // reference to used config 4509 hci_stack->config = config; 4510 4511 // setup pointer for outgoing packet buffer 4512 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4513 4514 // max acl payload size defined in config.h 4515 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4516 4517 // register packet handlers with transport 4518 transport->register_packet_handler(&packet_handler); 4519 4520 hci_stack->state = HCI_STATE_OFF; 4521 4522 // class of device 4523 hci_stack->class_of_device = 0x007a020c; // Smartphone 4524 4525 // bondable by default 4526 hci_stack->bondable = 1; 4527 4528 #ifdef ENABLE_CLASSIC 4529 // classic name 4530 hci_stack->local_name = default_classic_name; 4531 4532 // Master slave policy 4533 hci_stack->master_slave_policy = 1; 4534 4535 // Allow Role Switch 4536 hci_stack->allow_role_switch = 1; 4537 4538 // Default / minimum security level = 2 4539 hci_stack->gap_security_level = LEVEL_2; 4540 4541 // Default Security Mode 4 4542 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4543 4544 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4545 hci_stack->gap_required_encyrption_key_size = 7; 4546 4547 // Link Supervision Timeout 4548 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4549 4550 #endif 4551 4552 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4553 hci_stack->ssp_enable = 1; 4554 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4555 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4556 hci_stack->ssp_auto_accept = 1; 4557 4558 // Secure Connections: enable (requires support from Controller) 4559 hci_stack->secure_connections_enable = true; 4560 4561 // voice setting - signed 16 bit pcm data with CVSD over the air 4562 hci_stack->sco_voice_setting = 0x60; 4563 4564 #ifdef ENABLE_LE_CENTRAL 4565 // connection parameter to use for outgoing connections 4566 hci_stack->le_connection_scan_interval = 0x0060; // 60ms 4567 hci_stack->le_connection_scan_window = 0x0030; // 30ms 4568 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4569 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4570 hci_stack->le_connection_latency = 4; // 4 4571 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4572 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 4573 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 4574 4575 // default LE Scanning 4576 hci_stack->le_scan_type = 0x1; // active 4577 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4578 hci_stack->le_scan_window = 0x30; // 30 ms 4579 #endif 4580 4581 #ifdef ENABLE_LE_PERIPHERAL 4582 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4583 #endif 4584 4585 // connection parameter range used to answer connection parameter update requests in l2cap 4586 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4587 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4588 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4589 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4590 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4591 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4592 4593 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4594 hci_stack->iso_packets_to_queue = 1; 4595 #endif 4596 4597 hci_state_reset(); 4598 } 4599 4600 void hci_deinit(void){ 4601 btstack_run_loop_remove_timer(&hci_stack->timeout); 4602 #ifdef HAVE_MALLOC 4603 if (hci_stack) { 4604 free(hci_stack); 4605 } 4606 #endif 4607 hci_stack = NULL; 4608 4609 #ifdef ENABLE_CLASSIC 4610 disable_l2cap_timeouts = 0; 4611 #endif 4612 } 4613 4614 /** 4615 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4616 */ 4617 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4618 hci_stack->chipset = chipset_driver; 4619 4620 // reset chipset driver - init is also called on power_up 4621 if (hci_stack->chipset && hci_stack->chipset->init){ 4622 hci_stack->chipset->init(hci_stack->config); 4623 } 4624 } 4625 4626 /** 4627 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4628 */ 4629 void hci_set_control(const btstack_control_t *hardware_control){ 4630 // references to used control implementation 4631 hci_stack->control = hardware_control; 4632 // init with transport config 4633 hardware_control->init(hci_stack->config); 4634 } 4635 4636 static void hci_discard_connections(void){ 4637 btstack_linked_list_iterator_t it; 4638 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4639 while (btstack_linked_list_iterator_has_next(&it)){ 4640 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4641 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4642 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4643 hci_shutdown_connection(connection); 4644 } 4645 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4646 while (hci_stack->iso_streams != NULL){ 4647 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4648 } 4649 #endif 4650 } 4651 4652 void hci_close(void){ 4653 4654 #ifdef ENABLE_CLASSIC 4655 // close remote device db 4656 if (hci_stack->link_key_db) { 4657 hci_stack->link_key_db->close(); 4658 } 4659 #endif 4660 4661 hci_discard_connections(); 4662 4663 hci_power_control(HCI_POWER_OFF); 4664 4665 #ifdef HAVE_MALLOC 4666 free(hci_stack); 4667 #endif 4668 hci_stack = NULL; 4669 } 4670 4671 #ifdef HAVE_SCO_TRANSPORT 4672 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4673 hci_stack->sco_transport = sco_transport; 4674 sco_transport->register_packet_handler(&packet_handler); 4675 } 4676 #endif 4677 4678 #ifdef ENABLE_CLASSIC 4679 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4680 // validate ranage and set 4681 if (encryption_key_size < 7) return; 4682 if (encryption_key_size > 16) return; 4683 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4684 } 4685 4686 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4687 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4688 hci_stack->gap_security_mode = security_mode; 4689 return ERROR_CODE_SUCCESS; 4690 } else { 4691 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4692 } 4693 } 4694 4695 gap_security_mode_t gap_get_security_mode(void){ 4696 return hci_stack->gap_security_mode; 4697 } 4698 4699 void gap_set_security_level(gap_security_level_t security_level){ 4700 hci_stack->gap_security_level = security_level; 4701 } 4702 4703 gap_security_level_t gap_get_security_level(void){ 4704 if (hci_stack->gap_secure_connections_only_mode){ 4705 return LEVEL_4; 4706 } 4707 return hci_stack->gap_security_level; 4708 } 4709 4710 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4711 hci_stack->gap_minimal_service_security_level = security_level; 4712 } 4713 4714 void gap_set_secure_connections_only_mode(bool enable){ 4715 hci_stack->gap_secure_connections_only_mode = enable; 4716 } 4717 4718 bool gap_get_secure_connections_only_mode(void){ 4719 return hci_stack->gap_secure_connections_only_mode; 4720 } 4721 #endif 4722 4723 #ifdef ENABLE_CLASSIC 4724 void gap_set_class_of_device(uint32_t class_of_device){ 4725 hci_stack->class_of_device = class_of_device; 4726 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4727 hci_run(); 4728 } 4729 4730 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4731 hci_stack->default_link_policy_settings = default_link_policy_settings; 4732 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4733 hci_run(); 4734 } 4735 4736 void gap_set_allow_role_switch(bool allow_role_switch){ 4737 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4738 } 4739 4740 uint8_t hci_get_allow_role_switch(void){ 4741 return hci_stack->allow_role_switch; 4742 } 4743 4744 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4745 hci_stack->link_supervision_timeout = link_supervision_timeout; 4746 } 4747 4748 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4749 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4750 } 4751 4752 uint16_t hci_automatic_flush_timeout(void){ 4753 return hci_stack->automatic_flush_timeout; 4754 } 4755 4756 void hci_disable_l2cap_timeout_check(void){ 4757 disable_l2cap_timeouts = 1; 4758 } 4759 #endif 4760 4761 #ifndef HAVE_HOST_CONTROLLER_API 4762 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4763 void hci_set_bd_addr(bd_addr_t addr){ 4764 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4765 hci_stack->custom_bd_addr_set = 1; 4766 } 4767 #endif 4768 4769 // State-Module-Driver overview 4770 // state module low-level 4771 // HCI_STATE_OFF off close 4772 // HCI_STATE_INITIALIZING, on open 4773 // HCI_STATE_WORKING, on open 4774 // HCI_STATE_HALTING, on open 4775 // HCI_STATE_SLEEPING, off/sleep close 4776 // HCI_STATE_FALLING_ASLEEP on open 4777 4778 static int hci_power_control_on(void){ 4779 4780 // power on 4781 int err = 0; 4782 if (hci_stack->control && hci_stack->control->on){ 4783 err = (*hci_stack->control->on)(); 4784 } 4785 if (err){ 4786 log_error( "POWER_ON failed"); 4787 hci_emit_hci_open_failed(); 4788 return err; 4789 } 4790 4791 // int chipset driver 4792 if (hci_stack->chipset && hci_stack->chipset->init){ 4793 hci_stack->chipset->init(hci_stack->config); 4794 } 4795 4796 // init transport 4797 if (hci_stack->hci_transport->init){ 4798 hci_stack->hci_transport->init(hci_stack->config); 4799 } 4800 4801 // open transport 4802 err = hci_stack->hci_transport->open(); 4803 if (err){ 4804 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4805 if (hci_stack->control && hci_stack->control->off){ 4806 (*hci_stack->control->off)(); 4807 } 4808 hci_emit_hci_open_failed(); 4809 return err; 4810 } 4811 return 0; 4812 } 4813 4814 static void hci_power_control_off(void){ 4815 4816 log_info("hci_power_control_off"); 4817 4818 // close low-level device 4819 hci_stack->hci_transport->close(); 4820 4821 log_info("hci_power_control_off - hci_transport closed"); 4822 4823 // power off 4824 if (hci_stack->control && hci_stack->control->off){ 4825 (*hci_stack->control->off)(); 4826 } 4827 4828 log_info("hci_power_control_off - control closed"); 4829 4830 hci_stack->state = HCI_STATE_OFF; 4831 } 4832 4833 static void hci_power_control_sleep(void){ 4834 4835 log_info("hci_power_control_sleep"); 4836 4837 #if 0 4838 // don't close serial port during sleep 4839 4840 // close low-level device 4841 hci_stack->hci_transport->close(hci_stack->config); 4842 #endif 4843 4844 // sleep mode 4845 if (hci_stack->control && hci_stack->control->sleep){ 4846 (*hci_stack->control->sleep)(); 4847 } 4848 4849 hci_stack->state = HCI_STATE_SLEEPING; 4850 } 4851 4852 static int hci_power_control_wake(void){ 4853 4854 log_info("hci_power_control_wake"); 4855 4856 // wake on 4857 if (hci_stack->control && hci_stack->control->wake){ 4858 (*hci_stack->control->wake)(); 4859 } 4860 4861 #if 0 4862 // open low-level device 4863 int err = hci_stack->hci_transport->open(hci_stack->config); 4864 if (err){ 4865 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4866 if (hci_stack->control && hci_stack->control->off){ 4867 (*hci_stack->control->off)(); 4868 } 4869 hci_emit_hci_open_failed(); 4870 return err; 4871 } 4872 #endif 4873 4874 return 0; 4875 } 4876 4877 static void hci_power_enter_initializing_state(void){ 4878 // set up state machine 4879 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4880 hci_stack->hci_packet_buffer_reserved = false; 4881 hci_stack->state = HCI_STATE_INITIALIZING; 4882 hci_stack->substate = HCI_INIT_SEND_RESET; 4883 } 4884 4885 static void hci_power_enter_halting_state(void){ 4886 #ifdef ENABLE_BLE 4887 hci_whitelist_free(); 4888 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4889 hci_periodic_advertiser_list_free(); 4890 #endif 4891 #endif 4892 // see hci_run 4893 hci_stack->state = HCI_STATE_HALTING; 4894 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4895 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4896 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4897 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4898 btstack_run_loop_add_timer(&hci_stack->timeout); 4899 } 4900 4901 // returns error 4902 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4903 int err; 4904 switch (power_mode){ 4905 case HCI_POWER_ON: 4906 err = hci_power_control_on(); 4907 if (err != 0) { 4908 log_error("hci_power_control_on() error %d", err); 4909 return err; 4910 } 4911 hci_power_enter_initializing_state(); 4912 break; 4913 case HCI_POWER_OFF: 4914 // do nothing 4915 break; 4916 case HCI_POWER_SLEEP: 4917 // do nothing (with SLEEP == OFF) 4918 break; 4919 default: 4920 btstack_assert(false); 4921 break; 4922 } 4923 return ERROR_CODE_SUCCESS; 4924 } 4925 4926 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 4927 switch (power_mode){ 4928 case HCI_POWER_ON: 4929 // do nothing 4930 break; 4931 case HCI_POWER_OFF: 4932 // no connections yet, just turn it off 4933 hci_power_control_off(); 4934 break; 4935 case HCI_POWER_SLEEP: 4936 // no connections yet, just turn it off 4937 hci_power_control_sleep(); 4938 break; 4939 default: 4940 btstack_assert(false); 4941 break; 4942 } 4943 return ERROR_CODE_SUCCESS; 4944 } 4945 4946 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 4947 switch (power_mode){ 4948 case HCI_POWER_ON: 4949 // do nothing 4950 break; 4951 case HCI_POWER_OFF: 4952 hci_power_enter_halting_state(); 4953 break; 4954 case HCI_POWER_SLEEP: 4955 // see hci_run 4956 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4957 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4958 break; 4959 default: 4960 btstack_assert(false); 4961 break; 4962 } 4963 return ERROR_CODE_SUCCESS; 4964 } 4965 4966 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 4967 switch (power_mode){ 4968 case HCI_POWER_ON: 4969 hci_power_enter_initializing_state(); 4970 break; 4971 case HCI_POWER_OFF: 4972 // do nothing 4973 break; 4974 case HCI_POWER_SLEEP: 4975 // see hci_run 4976 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4977 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4978 break; 4979 default: 4980 btstack_assert(false); 4981 break; 4982 } 4983 return ERROR_CODE_SUCCESS; 4984 } 4985 4986 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 4987 switch (power_mode){ 4988 case HCI_POWER_ON: 4989 hci_power_enter_initializing_state(); 4990 break; 4991 case HCI_POWER_OFF: 4992 hci_power_enter_halting_state(); 4993 break; 4994 case HCI_POWER_SLEEP: 4995 // do nothing 4996 break; 4997 default: 4998 btstack_assert(false); 4999 break; 5000 } 5001 return ERROR_CODE_SUCCESS; 5002 } 5003 5004 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5005 int err; 5006 switch (power_mode){ 5007 case HCI_POWER_ON: 5008 err = hci_power_control_wake(); 5009 if (err) return err; 5010 hci_power_enter_initializing_state(); 5011 break; 5012 case HCI_POWER_OFF: 5013 hci_power_enter_halting_state(); 5014 break; 5015 case HCI_POWER_SLEEP: 5016 // do nothing 5017 break; 5018 default: 5019 btstack_assert(false); 5020 break; 5021 } 5022 return ERROR_CODE_SUCCESS; 5023 } 5024 5025 int hci_power_control(HCI_POWER_MODE power_mode){ 5026 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5027 btstack_run_loop_remove_timer(&hci_stack->timeout); 5028 int err = 0; 5029 switch (hci_stack->state){ 5030 case HCI_STATE_OFF: 5031 err = hci_power_control_state_off(power_mode); 5032 break; 5033 case HCI_STATE_INITIALIZING: 5034 err = hci_power_control_state_initializing(power_mode); 5035 break; 5036 case HCI_STATE_WORKING: 5037 err = hci_power_control_state_working(power_mode); 5038 break; 5039 case HCI_STATE_HALTING: 5040 err = hci_power_control_state_halting(power_mode); 5041 break; 5042 case HCI_STATE_FALLING_ASLEEP: 5043 err = hci_power_control_state_falling_asleep(power_mode); 5044 break; 5045 case HCI_STATE_SLEEPING: 5046 err = hci_power_control_state_sleeping(power_mode); 5047 break; 5048 default: 5049 btstack_assert(false); 5050 break; 5051 } 5052 if (err != 0){ 5053 return err; 5054 } 5055 5056 // create internal event 5057 hci_emit_state(); 5058 5059 // trigger next/first action 5060 hci_run(); 5061 5062 return 0; 5063 } 5064 5065 5066 static void hci_halting_run(void) { 5067 5068 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5069 5070 hci_connection_t *connection; 5071 #ifdef ENABLE_BLE 5072 #ifdef ENABLE_LE_PERIPHERAL 5073 bool stop_advertismenets; 5074 #endif 5075 #endif 5076 5077 switch (hci_stack->substate) { 5078 case HCI_HALTING_CLASSIC_STOP: 5079 #ifdef ENABLE_CLASSIC 5080 if (!hci_can_send_command_packet_now()) return; 5081 5082 if (hci_stack->connectable || hci_stack->discoverable){ 5083 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5084 hci_send_cmd(&hci_write_scan_enable, 0); 5085 return; 5086 } 5087 #endif 5088 /* fall through */ 5089 5090 case HCI_HALTING_LE_ADV_STOP: 5091 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5092 5093 #ifdef ENABLE_BLE 5094 #ifdef ENABLE_LE_PERIPHERAL 5095 if (!hci_can_send_command_packet_now()) return; 5096 5097 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5098 5099 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5100 if (hci_extended_advertising_supported()){ 5101 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5102 btstack_linked_list_iterator_t it; 5103 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5104 // stop all periodic advertisements and check if an extended set is active 5105 while (btstack_linked_list_iterator_has_next(&it)){ 5106 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5107 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5108 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5109 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5110 return; 5111 } 5112 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5113 stop_advertismenets = true; 5114 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5115 } 5116 } 5117 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5118 if (stop_advertismenets){ 5119 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5120 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5121 return; 5122 } 5123 } 5124 else 5125 #else /* ENABLE_LE_PERIPHERAL */ 5126 { 5127 if (stop_advertismenets) { 5128 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5129 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5130 return; 5131 } 5132 } 5133 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5134 #endif /* ENABLE_LE_PERIPHERAL */ 5135 #endif /* ENABLE_BLE */ 5136 5137 /* fall through */ 5138 5139 case HCI_HALTING_LE_SCAN_STOP: 5140 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5141 if (!hci_can_send_command_packet_now()) return; 5142 5143 #ifdef ENABLE_BLE 5144 #ifdef ENABLE_LE_CENTRAL 5145 if (hci_stack->le_scanning_active){ 5146 hci_le_scan_stop(); 5147 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5148 return; 5149 } 5150 #endif 5151 #endif 5152 5153 /* fall through */ 5154 5155 case HCI_HALTING_DISCONNECT_ALL: 5156 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5157 if (!hci_can_send_command_packet_now()) return; 5158 5159 // close all open connections 5160 connection = (hci_connection_t *) hci_stack->connections; 5161 if (connection) { 5162 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5163 5164 // check state 5165 if (connection->state == SENT_DISCONNECT) return; 5166 connection->state = SENT_DISCONNECT; 5167 5168 log_info("HCI_STATE_HALTING, connection %p, handle %u", connection, con_handle); 5169 5170 // finally, send the disconnect command 5171 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5172 return; 5173 } 5174 5175 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5176 // stop BIGs and BIG Syncs 5177 if (hci_stack->le_audio_bigs != NULL){ 5178 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5179 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5180 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5181 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5182 return; 5183 } 5184 if (hci_stack->le_audio_big_syncs != NULL){ 5185 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5186 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5187 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5188 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5189 return; 5190 } 5191 #endif 5192 5193 btstack_run_loop_remove_timer(&hci_stack->timeout); 5194 5195 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5196 log_info("HCI_STATE_HALTING: wait 50 ms"); 5197 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5198 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5199 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5200 btstack_run_loop_add_timer(&hci_stack->timeout); 5201 break; 5202 5203 case HCI_HALTING_CLOSE: 5204 // close left over connections (that had not been properly closed before) 5205 hci_discard_connections(); 5206 5207 log_info("HCI_STATE_HALTING, calling off"); 5208 5209 // switch mode 5210 hci_power_control_off(); 5211 5212 log_info("HCI_STATE_HALTING, emitting state"); 5213 hci_emit_state(); 5214 log_info("HCI_STATE_HALTING, done"); 5215 break; 5216 5217 case HCI_HALTING_W4_CLOSE_TIMER: 5218 // keep waiting 5219 5220 break; 5221 default: 5222 break; 5223 } 5224 }; 5225 5226 static void hci_falling_asleep_run(void){ 5227 hci_connection_t * connection; 5228 switch(hci_stack->substate) { 5229 case HCI_FALLING_ASLEEP_DISCONNECT: 5230 log_info("HCI_STATE_FALLING_ASLEEP"); 5231 // close all open connections 5232 connection = (hci_connection_t *) hci_stack->connections; 5233 if (connection){ 5234 5235 // send disconnect 5236 if (!hci_can_send_command_packet_now()) return; 5237 5238 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5239 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5240 5241 // send disconnected event right away - causes higher layer connections to get closed, too. 5242 hci_shutdown_connection(connection); 5243 return; 5244 } 5245 5246 if (hci_classic_supported()){ 5247 // disable page and inquiry scan 5248 if (!hci_can_send_command_packet_now()) return; 5249 5250 log_info("HCI_STATE_HALTING, disabling inq scans"); 5251 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5252 5253 // continue in next sub state 5254 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5255 break; 5256 } 5257 5258 /* fall through */ 5259 5260 case HCI_FALLING_ASLEEP_COMPLETE: 5261 log_info("HCI_STATE_HALTING, calling sleep"); 5262 // switch mode 5263 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5264 hci_emit_state(); 5265 break; 5266 5267 default: 5268 break; 5269 } 5270 } 5271 5272 #ifdef ENABLE_CLASSIC 5273 5274 static void hci_update_scan_enable(void){ 5275 // 2 = page scan, 1 = inq scan 5276 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5277 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5278 hci_run(); 5279 } 5280 5281 void gap_discoverable_control(uint8_t enable){ 5282 if (enable) enable = 1; // normalize argument 5283 5284 if (hci_stack->discoverable == enable){ 5285 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5286 return; 5287 } 5288 5289 hci_stack->discoverable = enable; 5290 hci_update_scan_enable(); 5291 } 5292 5293 void gap_connectable_control(uint8_t enable){ 5294 if (enable) enable = 1; // normalize argument 5295 5296 // don't emit event 5297 if (hci_stack->connectable == enable) return; 5298 5299 hci_stack->connectable = enable; 5300 hci_update_scan_enable(); 5301 } 5302 #endif 5303 5304 void gap_local_bd_addr(bd_addr_t address_buffer){ 5305 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5306 } 5307 5308 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5309 static void hci_host_num_completed_packets(void){ 5310 5311 // create packet manually as arrays are not supported and num_commands should not get reduced 5312 hci_reserve_packet_buffer(); 5313 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5314 5315 uint16_t size = 0; 5316 uint16_t num_handles = 0; 5317 packet[size++] = 0x35; 5318 packet[size++] = 0x0c; 5319 size++; // skip param len 5320 size++; // skip num handles 5321 5322 // add { handle, packets } entries 5323 btstack_linked_item_t * it; 5324 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5325 hci_connection_t * connection = (hci_connection_t *) it; 5326 if (connection->num_packets_completed){ 5327 little_endian_store_16(packet, size, connection->con_handle); 5328 size += 2; 5329 little_endian_store_16(packet, size, connection->num_packets_completed); 5330 size += 2; 5331 // 5332 num_handles++; 5333 connection->num_packets_completed = 0; 5334 } 5335 } 5336 5337 packet[2] = size - 3; 5338 packet[3] = num_handles; 5339 5340 hci_stack->host_completed_packets = 0; 5341 5342 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5343 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5344 5345 // release packet buffer for synchronous transport implementations 5346 if (hci_transport_synchronous()){ 5347 hci_release_packet_buffer(); 5348 hci_emit_transport_packet_sent(); 5349 } 5350 } 5351 #endif 5352 5353 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5354 UNUSED(ds); 5355 hci_stack->substate = HCI_HALTING_CLOSE; 5356 // allow packet handlers to defer final shutdown 5357 hci_emit_state(); 5358 hci_run(); 5359 } 5360 5361 static bool hci_run_acl_fragments(void){ 5362 if (hci_stack->acl_fragmentation_total_size > 0u) { 5363 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5364 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5365 if (connection) { 5366 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5367 hci_send_acl_packet_fragments(connection); 5368 return true; 5369 } 5370 } else { 5371 // connection gone -> discard further fragments 5372 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5373 hci_stack->acl_fragmentation_total_size = 0; 5374 hci_stack->acl_fragmentation_pos = 0; 5375 } 5376 } 5377 return false; 5378 } 5379 5380 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5381 static bool hci_run_iso_fragments(void){ 5382 if (hci_stack->iso_fragmentation_total_size > 0u) { 5383 // TODO: flow control 5384 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5385 hci_send_iso_packet_fragments(); 5386 return true; 5387 } 5388 } 5389 return false; 5390 } 5391 #endif 5392 5393 #ifdef ENABLE_CLASSIC 5394 5395 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5396 static bool hci_classic_operation_active(void) { 5397 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5398 return true; 5399 } 5400 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5401 return true; 5402 } 5403 btstack_linked_item_t * it; 5404 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5405 hci_connection_t *connection = (hci_connection_t *) it; 5406 switch (connection->state) { 5407 case SENT_CREATE_CONNECTION: 5408 case SENT_CANCEL_CONNECTION: 5409 case SENT_DISCONNECT: 5410 return true; 5411 default: 5412 break; 5413 } 5414 } 5415 return false; 5416 } 5417 #endif 5418 5419 static bool hci_run_general_gap_classic(void){ 5420 5421 // assert stack is working and classic is active 5422 if (hci_classic_supported() == false) return false; 5423 if (hci_stack->state != HCI_STATE_WORKING) return false; 5424 5425 // decline incoming connections 5426 if (hci_stack->decline_reason){ 5427 uint8_t reason = hci_stack->decline_reason; 5428 hci_stack->decline_reason = 0; 5429 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5430 return true; 5431 } 5432 5433 if (hci_stack->gap_tasks_classic != 0){ 5434 hci_run_gap_tasks_classic(); 5435 return true; 5436 } 5437 5438 // start/stop inquiry 5439 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5440 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5441 if (hci_classic_operation_active() == false) 5442 #endif 5443 { 5444 uint8_t duration = hci_stack->inquiry_state; 5445 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5446 if (hci_stack->inquiry_max_period_length != 0){ 5447 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); 5448 } else { 5449 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5450 } 5451 return true; 5452 } 5453 } 5454 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5455 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5456 hci_send_cmd(&hci_inquiry_cancel); 5457 return true; 5458 } 5459 5460 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5461 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5462 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5463 return true; 5464 } 5465 5466 // remote name request 5467 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5468 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5469 if (hci_classic_operation_active() == false) 5470 #endif 5471 { 5472 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5473 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5474 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5475 return true; 5476 } 5477 } 5478 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5479 // Local OOB data 5480 if (hci_stack->classic_read_local_oob_data){ 5481 hci_stack->classic_read_local_oob_data = false; 5482 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5483 hci_send_cmd(&hci_read_local_extended_oob_data); 5484 } else { 5485 hci_send_cmd(&hci_read_local_oob_data); 5486 } 5487 } 5488 #endif 5489 // pairing 5490 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5491 uint8_t state = hci_stack->gap_pairing_state; 5492 uint8_t pin_code[16]; 5493 switch (state){ 5494 case GAP_PAIRING_STATE_SEND_PIN: 5495 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5496 memset(pin_code, 0, 16); 5497 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5498 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5499 break; 5500 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5501 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5502 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5503 break; 5504 case GAP_PAIRING_STATE_SEND_PASSKEY: 5505 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5506 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5507 break; 5508 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5509 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5510 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5511 break; 5512 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5513 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5514 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5515 break; 5516 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5517 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5518 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5519 break; 5520 default: 5521 break; 5522 } 5523 return true; 5524 } 5525 return false; 5526 } 5527 #endif 5528 5529 #ifdef ENABLE_BLE 5530 5531 #ifdef ENABLE_LE_CENTRAL 5532 static void hci_le_scan_stop(void){ 5533 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5534 if (hci_extended_advertising_supported()) { 5535 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5536 } else 5537 #endif 5538 { 5539 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5540 } 5541 } 5542 #endif 5543 5544 #ifdef ENABLE_LE_PERIPHERAL 5545 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5546 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5547 uint8_t operation = 0; 5548 if (pos == 0){ 5549 // first fragment or complete data 5550 operation |= 1; 5551 } 5552 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5553 // last fragment or complete data 5554 operation |= 2; 5555 } 5556 return operation; 5557 } 5558 #endif 5559 #endif 5560 5561 static bool hci_run_general_gap_le(void){ 5562 5563 btstack_linked_list_iterator_t lit; 5564 5565 // Phase 1: collect what to stop 5566 5567 #ifdef ENABLE_LE_CENTRAL 5568 bool scanning_stop = false; 5569 bool connecting_stop = false; 5570 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5571 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5572 bool periodic_sync_stop = false; 5573 #endif 5574 #endif 5575 #endif 5576 5577 #ifdef ENABLE_LE_PERIPHERAL 5578 bool advertising_stop = false; 5579 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5580 le_advertising_set_t * advertising_stop_set = NULL; 5581 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5582 bool periodic_advertising_stop = false; 5583 #endif 5584 #endif 5585 #endif 5586 5587 // check if own address changes 5588 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5589 5590 // check if whitelist needs modification 5591 bool whitelist_modification_pending = false; 5592 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5593 while (btstack_linked_list_iterator_has_next(&lit)){ 5594 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5595 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5596 whitelist_modification_pending = true; 5597 break; 5598 } 5599 } 5600 5601 // check if resolving list needs modification 5602 bool resolving_list_modification_pending = false; 5603 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5604 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5605 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5606 resolving_list_modification_pending = true; 5607 } 5608 #endif 5609 5610 #ifdef ENABLE_LE_CENTRAL 5611 5612 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5613 // check if periodic advertiser list needs modification 5614 bool periodic_list_modification_pending = false; 5615 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5616 while (btstack_linked_list_iterator_has_next(&lit)){ 5617 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5618 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5619 periodic_list_modification_pending = true; 5620 break; 5621 } 5622 } 5623 #endif 5624 5625 // scanning control 5626 if (hci_stack->le_scanning_active) { 5627 // stop if: 5628 // - parameter change required 5629 // - it's disabled 5630 // - whitelist change required but used for scanning 5631 // - resolving list modified 5632 // - own address changes 5633 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5634 if ((hci_stack->le_scanning_param_update) || 5635 !hci_stack->le_scanning_enabled || 5636 (scanning_uses_whitelist && whitelist_modification_pending) || 5637 resolving_list_modification_pending || 5638 random_address_change){ 5639 5640 scanning_stop = true; 5641 } 5642 } 5643 5644 // connecting control 5645 bool connecting_with_whitelist; 5646 switch (hci_stack->le_connecting_state){ 5647 case LE_CONNECTING_DIRECT: 5648 case LE_CONNECTING_WHITELIST: 5649 // stop connecting if: 5650 // - connecting uses white and whitelist modification pending 5651 // - if it got disabled 5652 // - resolving list modified 5653 // - own address changes 5654 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5655 if ((connecting_with_whitelist && whitelist_modification_pending) || 5656 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5657 resolving_list_modification_pending || 5658 random_address_change) { 5659 5660 connecting_stop = true; 5661 } 5662 break; 5663 default: 5664 break; 5665 } 5666 5667 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5668 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5669 // periodic sync control 5670 bool sync_with_advertiser_list; 5671 switch(hci_stack->le_periodic_sync_state){ 5672 case LE_CONNECTING_DIRECT: 5673 case LE_CONNECTING_WHITELIST: 5674 // stop sync if: 5675 // - sync with advertiser list and advertiser list modification pending 5676 // - if it got disabled 5677 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5678 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5679 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5680 periodic_sync_stop = true; 5681 } 5682 break; 5683 default: 5684 break; 5685 } 5686 #endif 5687 #endif 5688 5689 #endif /* ENABLE_LE_CENTRAL */ 5690 5691 #ifdef ENABLE_LE_PERIPHERAL 5692 // le advertisement control 5693 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5694 // stop if: 5695 // - parameter change required 5696 // - random address used in advertising and changes 5697 // - it's disabled 5698 // - whitelist change required but used for advertisement filter policy 5699 // - resolving list modified 5700 // - own address changes 5701 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5702 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5703 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5704 if (advertising_change || 5705 (advertising_uses_random_address && random_address_change) || 5706 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5707 (advertising_uses_whitelist && whitelist_modification_pending) || 5708 resolving_list_modification_pending || 5709 random_address_change) { 5710 5711 advertising_stop = true; 5712 } 5713 } 5714 5715 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5716 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5717 btstack_linked_list_iterator_t it; 5718 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5719 while (btstack_linked_list_iterator_has_next(&it)){ 5720 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5721 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5722 // stop if: 5723 // - parameter change required 5724 // - random address used in connectable advertising and changes 5725 // - it's disabled 5726 // - whitelist change required but used for advertisement filter policy 5727 // - resolving list modified 5728 // - own address changes 5729 // - advertisement set will be removed 5730 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5731 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5732 bool advertising_uses_random_address = 5733 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5734 advertising_connectable; 5735 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5736 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5737 bool advertising_set_random_address_change = 5738 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5739 bool advertising_set_will_be_removed = 5740 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5741 if (advertising_parameter_change || 5742 (advertising_uses_random_address && advertising_set_random_address_change) || 5743 (advertising_enabled == false) || 5744 (advertising_uses_whitelist && whitelist_modification_pending) || 5745 resolving_list_modification_pending || 5746 advertising_set_will_be_removed) { 5747 5748 advertising_stop = true; 5749 advertising_stop_set = advertising_set; 5750 break; 5751 } 5752 } 5753 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5754 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5755 // stop if: 5756 // - it's disabled 5757 // - parameter change required 5758 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5759 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5760 if ((periodic_enabled == false) || periodic_parameter_change){ 5761 periodic_advertising_stop = true; 5762 advertising_stop_set = advertising_set; 5763 } 5764 } 5765 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5766 } 5767 } 5768 #endif 5769 5770 #endif 5771 5772 5773 // Phase 2: stop everything that should be off during modifications 5774 5775 5776 // 2.1 Outgoing connection 5777 #ifdef ENABLE_LE_CENTRAL 5778 if (connecting_stop){ 5779 hci_send_cmd(&hci_le_create_connection_cancel); 5780 return true; 5781 } 5782 #endif 5783 5784 // 2.2 Scanning 5785 #ifdef ENABLE_LE_CENTRAL 5786 if (scanning_stop){ 5787 hci_stack->le_scanning_active = false; 5788 hci_le_scan_stop(); 5789 return true; 5790 } 5791 5792 // 2.3 Periodic Sync 5793 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5794 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5795 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5796 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5797 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5798 return true; 5799 } 5800 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5801 if (periodic_sync_stop){ 5802 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5803 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5804 return true; 5805 } 5806 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5807 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5808 #endif /* ENABLE_LE_CENTRAL */ 5809 5810 // 2.4 Advertising: legacy, extended, periodic 5811 #ifdef ENABLE_LE_PERIPHERAL 5812 if (advertising_stop){ 5813 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5814 if (hci_extended_advertising_supported()) { 5815 uint8_t advertising_stop_handle; 5816 if (advertising_stop_set != NULL){ 5817 advertising_stop_handle = advertising_stop_set->advertising_handle; 5818 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5819 } else { 5820 advertising_stop_handle = 0; 5821 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5822 } 5823 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5824 const uint16_t durations[] = { 0 }; 5825 const uint16_t max_events[] = { 0 }; 5826 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5827 } else 5828 #endif 5829 { 5830 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5831 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5832 } 5833 return true; 5834 } 5835 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5836 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5837 if (periodic_advertising_stop){ 5838 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5839 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5840 return true; 5841 } 5842 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5843 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5844 #endif /* ENABLE_LE_PERIPHERAL */ 5845 5846 5847 // Phase 3: modify 5848 5849 if (random_address_change){ 5850 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5851 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5852 if (hci_extended_advertising_supported()) { 5853 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5854 } 5855 #endif 5856 { 5857 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5858 } 5859 return true; 5860 } 5861 5862 #ifdef ENABLE_LE_CENTRAL 5863 if (hci_stack->le_scanning_param_update){ 5864 hci_stack->le_scanning_param_update = false; 5865 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5866 if (hci_extended_advertising_supported()){ 5867 // prepare arrays for all PHYs 5868 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5869 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5870 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5871 uint8_t scanning_phys = 1; // LE 1M PHY 5872 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5873 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5874 } else 5875 #endif 5876 { 5877 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5878 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5879 } 5880 return true; 5881 } 5882 #endif 5883 5884 #ifdef ENABLE_LE_PERIPHERAL 5885 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5886 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5887 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5888 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5889 if (hci_extended_advertising_supported()){ 5890 // map advertisment type to advertising event properties 5891 uint16_t adv_event_properties = 0; 5892 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 5893 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 5894 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 5895 } 5896 hci_stack->le_advertising_set_in_current_command = 0; 5897 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5898 0, 5899 adv_event_properties, 5900 hci_stack->le_advertisements_interval_min, 5901 hci_stack->le_advertisements_interval_max, 5902 hci_stack->le_advertisements_channel_map, 5903 hci_stack->le_advertisements_own_addr_type, 5904 hci_stack->le_advertisements_direct_address_type, 5905 hci_stack->le_advertisements_direct_address, 5906 hci_stack->le_advertisements_filter_policy, 5907 0x7f, // tx power: no preference 5908 0x01, // primary adv phy: LE 1M 5909 0, // secondary adv max skip 5910 0, // secondary adv phy 5911 0, // adv sid 5912 0 // scan request notification 5913 ); 5914 } 5915 #endif 5916 { 5917 hci_send_cmd(&hci_le_set_advertising_parameters, 5918 hci_stack->le_advertisements_interval_min, 5919 hci_stack->le_advertisements_interval_max, 5920 hci_stack->le_advertisements_type, 5921 hci_stack->le_advertisements_own_addr_type, 5922 hci_stack->le_advertisements_direct_address_type, 5923 hci_stack->le_advertisements_direct_address, 5924 hci_stack->le_advertisements_channel_map, 5925 hci_stack->le_advertisements_filter_policy); 5926 } 5927 return true; 5928 } 5929 5930 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 5931 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5932 uint8_t adv_data_clean[31]; 5933 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 5934 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 5935 hci_stack->le_advertisements_data_len); 5936 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 5937 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5938 if (hci_extended_advertising_supported()){ 5939 hci_stack->le_advertising_set_in_current_command = 0; 5940 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 5941 } else 5942 #endif 5943 { 5944 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 5945 } 5946 return true; 5947 } 5948 5949 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 5950 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5951 uint8_t scan_data_clean[31]; 5952 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 5953 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 5954 hci_stack->le_scan_response_data_len); 5955 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 5956 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5957 if (hci_extended_advertising_supported()){ 5958 hci_stack->le_advertising_set_in_current_command = 0; 5959 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 5960 } else 5961 #endif 5962 { 5963 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 5964 } 5965 return true; 5966 } 5967 5968 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5969 if (hci_extended_advertising_supported()) { 5970 btstack_linked_list_iterator_t it; 5971 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5972 while (btstack_linked_list_iterator_has_next(&it)){ 5973 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5974 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 5975 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 5976 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5977 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 5978 return true; 5979 } 5980 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 5981 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5982 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 5983 return true; 5984 } 5985 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 5986 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5987 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5988 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5989 advertising_set->advertising_handle, 5990 advertising_set->extended_params.advertising_event_properties, 5991 advertising_set->extended_params.primary_advertising_interval_min, 5992 advertising_set->extended_params.primary_advertising_interval_max, 5993 advertising_set->extended_params.primary_advertising_channel_map, 5994 advertising_set->extended_params.own_address_type, 5995 advertising_set->extended_params.peer_address_type, 5996 advertising_set->extended_params.peer_address, 5997 advertising_set->extended_params.advertising_filter_policy, 5998 advertising_set->extended_params.advertising_tx_power, 5999 advertising_set->extended_params.primary_advertising_phy, 6000 advertising_set->extended_params.secondary_advertising_max_skip, 6001 advertising_set->extended_params.secondary_advertising_phy, 6002 advertising_set->extended_params.advertising_sid, 6003 advertising_set->extended_params.scan_request_notification_enable 6004 ); 6005 return true; 6006 } 6007 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6008 uint16_t pos = advertising_set->adv_data_pos; 6009 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6010 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6011 if ((operation & 0x02) != 0){ 6012 // last fragment or complete data 6013 operation |= 2; 6014 advertising_set->adv_data_pos = 0; 6015 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6016 } else { 6017 advertising_set->adv_data_pos += data_to_upload; 6018 } 6019 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6020 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6021 return true; 6022 } 6023 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6024 uint16_t pos = advertising_set->scan_data_pos; 6025 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6026 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6027 if ((operation & 0x02) != 0){ 6028 advertising_set->scan_data_pos = 0; 6029 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6030 } else { 6031 advertising_set->scan_data_pos += data_to_upload; 6032 } 6033 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6034 hci_send_cmd(&hci_le_set_extended_scan_response_data, operation, 0x03, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6035 return true; 6036 } 6037 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6038 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6039 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6040 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6041 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6042 advertising_set->advertising_handle, 6043 advertising_set->periodic_params.periodic_advertising_interval_min, 6044 advertising_set->periodic_params.periodic_advertising_interval_max, 6045 advertising_set->periodic_params.periodic_advertising_properties); 6046 return true; 6047 } 6048 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6049 uint16_t pos = advertising_set->periodic_data_pos; 6050 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6051 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6052 if ((operation & 0x02) != 0){ 6053 // last fragment or complete data 6054 operation |= 2; 6055 advertising_set->periodic_data_pos = 0; 6056 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6057 } else { 6058 advertising_set->periodic_data_pos += data_to_upload; 6059 } 6060 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6061 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6062 return true; 6063 } 6064 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6065 } 6066 } 6067 #endif 6068 6069 #endif 6070 6071 #ifdef ENABLE_LE_CENTRAL 6072 // if connect with whitelist was active and is not cancelled yet, wait until next time 6073 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6074 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6075 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6076 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6077 #endif 6078 #endif 6079 6080 // LE Whitelist Management 6081 if (whitelist_modification_pending){ 6082 // add/remove entries 6083 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6084 while (btstack_linked_list_iterator_has_next(&lit)){ 6085 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6086 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6087 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6088 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 6089 return true; 6090 } 6091 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6092 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6093 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6094 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6095 return true; 6096 } 6097 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 6098 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6099 btstack_memory_whitelist_entry_free(entry); 6100 } 6101 } 6102 } 6103 6104 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6105 // LE Resolving List Management 6106 if (resolving_list_supported) { 6107 uint16_t i; 6108 switch (hci_stack->le_resolving_list_state) { 6109 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6110 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6111 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6112 return true; 6113 case LE_RESOLVING_LIST_READ_SIZE: 6114 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6115 hci_send_cmd(&hci_le_read_resolving_list_size); 6116 return true; 6117 case LE_RESOLVING_LIST_SEND_CLEAR: 6118 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 6119 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6120 sizeof(hci_stack->le_resolving_list_add_entries)); 6121 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6122 sizeof(hci_stack->le_resolving_list_remove_entries)); 6123 hci_send_cmd(&hci_le_clear_resolving_list); 6124 return true; 6125 case LE_RESOLVING_LIST_REMOVE_ENTRIES: 6126 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6127 uint8_t offset = i >> 3; 6128 uint8_t mask = 1 << (i & 7); 6129 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6130 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6131 bd_addr_t peer_identity_addreses; 6132 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6133 sm_key_t peer_irk; 6134 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6135 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6136 6137 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6138 // trigger whitelist entry 'update' (work around for controller bug) 6139 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6140 while (btstack_linked_list_iterator_has_next(&lit)) { 6141 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6142 if (entry->address_type != peer_identity_addr_type) continue; 6143 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6144 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6145 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6146 } 6147 #endif 6148 6149 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6150 peer_identity_addreses); 6151 return true; 6152 } 6153 6154 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_ADD_ENTRIES; 6155 6156 /* fall through */ 6157 6158 case LE_RESOLVING_LIST_ADD_ENTRIES: 6159 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6160 uint8_t offset = i >> 3; 6161 uint8_t mask = 1 << (i & 7); 6162 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6163 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6164 bd_addr_t peer_identity_addreses; 6165 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6166 sm_key_t peer_irk; 6167 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6168 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6169 if (btstack_is_null(peer_irk, 16)) continue; 6170 const uint8_t *local_irk = gap_get_persistent_irk(); 6171 // command uses format specifier 'P' that stores 16-byte value without flip 6172 uint8_t local_irk_flipped[16]; 6173 uint8_t peer_irk_flipped[16]; 6174 reverse_128(local_irk, local_irk_flipped); 6175 reverse_128(peer_irk, peer_irk_flipped); 6176 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6177 peer_irk_flipped, local_irk_flipped); 6178 return true; 6179 } 6180 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6181 break; 6182 6183 default: 6184 break; 6185 } 6186 } 6187 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6188 #endif 6189 6190 #ifdef ENABLE_LE_CENTRAL 6191 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6192 // LE Whitelist Management 6193 if (periodic_list_modification_pending){ 6194 // add/remove entries 6195 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6196 while (btstack_linked_list_iterator_has_next(&lit)){ 6197 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6198 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6199 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6200 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6201 return true; 6202 } 6203 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6204 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6205 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6206 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6207 return true; 6208 } 6209 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6210 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6211 btstack_memory_periodic_advertiser_list_entry_free(entry); 6212 } 6213 } 6214 } 6215 #endif 6216 #endif 6217 6218 #ifdef ENABLE_LE_CENTRAL 6219 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6220 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6221 if (hci_stack->le_past_set_default_params){ 6222 hci_stack->le_past_set_default_params = false; 6223 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6224 hci_stack->le_past_mode, 6225 hci_stack->le_past_skip, 6226 hci_stack->le_past_sync_timeout, 6227 hci_stack->le_past_cte_type); 6228 return true; 6229 } 6230 #endif 6231 #endif 6232 #endif 6233 6234 // post-pone all actions until stack is fully working 6235 if (hci_stack->state != HCI_STATE_WORKING) return false; 6236 6237 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6238 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6239 6240 // Phase 4: restore state 6241 6242 #ifdef ENABLE_LE_CENTRAL 6243 // re-start scanning 6244 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6245 hci_stack->le_scanning_active = true; 6246 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6247 if (hci_extended_advertising_supported()){ 6248 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6249 } else 6250 #endif 6251 { 6252 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6253 } 6254 return true; 6255 } 6256 #endif 6257 6258 #ifdef ENABLE_LE_CENTRAL 6259 // re-start connecting 6260 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6261 bd_addr_t null_addr; 6262 memset(null_addr, 0, 6); 6263 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6264 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6265 hci_send_cmd(&hci_le_create_connection, 6266 hci_stack->le_connection_scan_interval, // scan interval: 60 ms 6267 hci_stack->le_connection_scan_window, // scan interval: 30 ms 6268 1, // use whitelist 6269 0, // peer address type 6270 null_addr, // peer bd addr 6271 hci_stack->le_connection_own_addr_type, // our addr type: 6272 hci_stack->le_connection_interval_min, // conn interval min 6273 hci_stack->le_connection_interval_max, // conn interval max 6274 hci_stack->le_connection_latency, // conn latency 6275 hci_stack->le_supervision_timeout, // conn latency 6276 hci_stack->le_minimum_ce_length, // min ce length 6277 hci_stack->le_maximum_ce_length // max ce length 6278 ); 6279 return true; 6280 } 6281 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6282 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6283 switch(hci_stack->le_periodic_sync_request){ 6284 case LE_CONNECTING_DIRECT: 6285 case LE_CONNECTING_WHITELIST: 6286 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6287 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6288 hci_stack->le_periodic_sync_options, 6289 hci_stack->le_periodic_sync_advertising_sid, 6290 hci_stack->le_periodic_sync_advertiser_address_type, 6291 hci_stack->le_periodic_sync_advertiser_address, 6292 hci_stack->le_periodic_sync_skip, 6293 hci_stack->le_periodic_sync_timeout, 6294 hci_stack->le_periodic_sync_cte_type); 6295 return true; 6296 default: 6297 break; 6298 } 6299 } 6300 #endif 6301 #endif 6302 6303 #ifdef ENABLE_LE_PERIPHERAL 6304 // re-start advertising 6305 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6306 // check if advertisements should be enabled given 6307 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6308 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6309 6310 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6311 if (hci_extended_advertising_supported()){ 6312 const uint8_t advertising_handles[] = { 0 }; 6313 const uint16_t durations[] = { 0 }; 6314 const uint16_t max_events[] = { 0 }; 6315 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6316 } else 6317 #endif 6318 { 6319 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6320 } 6321 return true; 6322 } 6323 6324 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6325 if (hci_extended_advertising_supported()) { 6326 btstack_linked_list_iterator_t it; 6327 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6328 while (btstack_linked_list_iterator_has_next(&it)) { 6329 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6330 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6331 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6332 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6333 const uint16_t durations[] = { advertising_set->enable_timeout }; 6334 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6335 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6336 return true; 6337 } 6338 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6339 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6340 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6341 uint8_t enable = 1; 6342 if (advertising_set->periodic_include_adi){ 6343 enable |= 2; 6344 } 6345 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6346 return true; 6347 } 6348 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6349 } 6350 } 6351 #endif 6352 #endif 6353 6354 return false; 6355 } 6356 6357 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6358 static bool hci_run_iso_tasks(void){ 6359 btstack_linked_list_iterator_t it; 6360 6361 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6362 return false; 6363 } 6364 6365 // BIG 6366 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6367 while (btstack_linked_list_iterator_has_next(&it)){ 6368 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6369 switch (big->state){ 6370 case LE_AUDIO_BIG_STATE_CREATE: 6371 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6372 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6373 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6374 hci_send_cmd(&hci_le_create_big, 6375 big->params->big_handle, 6376 big->params->advertising_handle, 6377 big->params->num_bis, 6378 big->params->sdu_interval_us, 6379 big->params->max_sdu, 6380 big->params->max_transport_latency_ms, 6381 big->params->rtn, 6382 big->params->phy, 6383 big->params->packing, 6384 big->params->framing, 6385 big->params->encryption, 6386 big->params->broadcast_code); 6387 return true; 6388 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6389 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6390 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); 6391 return true; 6392 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6393 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6394 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6395 return true; 6396 case LE_AUDIO_BIG_STATE_TERMINATE: 6397 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6398 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6399 return true; 6400 default: 6401 break; 6402 } 6403 } 6404 6405 // BIG Sync 6406 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6407 while (btstack_linked_list_iterator_has_next(&it)){ 6408 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6409 switch (big_sync->state){ 6410 case LE_AUDIO_BIG_STATE_CREATE: 6411 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6412 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6413 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6414 hci_send_cmd(&hci_le_big_create_sync, 6415 big_sync->params->big_handle, 6416 big_sync->params->sync_handle, 6417 big_sync->params->encryption, 6418 big_sync->params->broadcast_code, 6419 big_sync->params->mse, 6420 big_sync->params->big_sync_timeout_10ms, 6421 big_sync->params->num_bis, 6422 big_sync->params->bis_indices); 6423 return true; 6424 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6425 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6426 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); 6427 return true; 6428 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6429 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6430 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6431 return true; 6432 case LE_AUDIO_BIG_STATE_TERMINATE: 6433 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6434 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6435 return true; 6436 default: 6437 break; 6438 } 6439 } 6440 6441 // CIG 6442 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6443 while (btstack_linked_list_iterator_has_next(&it)) { 6444 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6445 uint8_t i; 6446 // Set CIG Parameters 6447 uint8_t cis_id[MAX_NR_CIS]; 6448 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6449 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6450 uint8_t phy_c_to_p[MAX_NR_CIS]; 6451 uint8_t phy_p_to_c[MAX_NR_CIS]; 6452 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6453 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6454 switch (cig->state) { 6455 case LE_AUDIO_CIG_STATE_CREATE: 6456 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6457 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6458 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6459 le_audio_cig_params_t * params = cig->params; 6460 for (i = 0; i < params->num_cis; i++) { 6461 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6462 cis_id[i] = cis_params->cis_id; 6463 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6464 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6465 phy_c_to_p[i] = cis_params->phy_c_to_p; 6466 phy_p_to_c[i] = cis_params->phy_p_to_c; 6467 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6468 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6469 } 6470 hci_send_cmd(&hci_le_set_cig_parameters, 6471 cig->cig_id, 6472 params->sdu_interval_c_to_p, 6473 params->sdu_interval_p_to_c, 6474 params->worst_case_sca, 6475 params->packing, 6476 params->framing, 6477 params->max_transport_latency_c_to_p, 6478 params->max_transport_latency_p_to_c, 6479 params->num_cis, 6480 cis_id, 6481 max_sdu_c_to_p, 6482 max_sdu_p_to_c, 6483 phy_c_to_p, 6484 phy_p_to_c, 6485 rtn_c_to_p, 6486 rtn_p_to_c 6487 ); 6488 return true; 6489 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6490 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6491 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6492 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6493 for (i=0;i<cig->num_cis;i++){ 6494 cig->cis_setup_active[i] = true; 6495 } 6496 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6497 return true; 6498 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6499 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6500 // find next path to setup 6501 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6502 if (cig->cis_established[cis_index] == false) { 6503 continue; 6504 } 6505 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6506 bool setup = true; 6507 if (cis_direction == 0){ 6508 // 0 - input - host to controller 6509 // we are central => central to peripheral 6510 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6511 } else { 6512 // 1 - output - controller to host 6513 // we are central => peripheral to central 6514 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6515 } 6516 if (setup){ 6517 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6518 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6519 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6520 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, 0, 0, 0, 0, 0, NULL); 6521 return true; 6522 } 6523 cig->state_vars.next_cis++; 6524 } 6525 // emit done 6526 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6527 default: 6528 break; 6529 } 6530 } 6531 6532 // CIS Accept/Reject 6533 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6534 while (btstack_linked_list_iterator_has_next(&it)) { 6535 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6536 hci_con_handle_t con_handle; 6537 switch (iso_stream->state){ 6538 case HCI_ISO_STREAM_W2_ACCEPT: 6539 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6540 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6541 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6542 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->con_handle); 6543 return true; 6544 case HCI_ISO_STREAM_W2_REJECT: 6545 con_handle = iso_stream->con_handle; 6546 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6547 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6548 hci_iso_stream_finalize(iso_stream); 6549 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6550 return true; 6551 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6552 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6553 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6554 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6555 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->con_handle, 0, 0, 0, 0, 0, 0, 0, NULL); 6556 break; 6557 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6558 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6559 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6560 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6561 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->con_handle, 1, 0, 0, 0, 0, 0, 0, NULL); 6562 break; 6563 default: 6564 break; 6565 } 6566 } 6567 6568 return false; 6569 } 6570 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6571 #endif 6572 6573 static bool hci_run_general_pending_commands(void){ 6574 btstack_linked_item_t * it; 6575 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6576 hci_connection_t * connection = (hci_connection_t *) it; 6577 6578 switch(connection->state){ 6579 case SEND_CREATE_CONNECTION: 6580 switch(connection->address_type){ 6581 #ifdef ENABLE_CLASSIC 6582 case BD_ADDR_TYPE_ACL: 6583 log_info("sending hci_create_connection"); 6584 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6585 break; 6586 #endif 6587 default: 6588 #ifdef ENABLE_BLE 6589 #ifdef ENABLE_LE_CENTRAL 6590 log_info("sending hci_le_create_connection"); 6591 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6592 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6593 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6594 if (hci_extended_advertising_supported()) { 6595 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 6596 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 6597 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 6598 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 6599 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 6600 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 6601 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 6602 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 6603 hci_send_cmd(&hci_le_extended_create_connection, 6604 0, // don't use whitelist 6605 hci_stack->le_connection_own_addr_type, // our addr type: 6606 connection->address_type, // peer address type 6607 connection->address, // peer bd addr 6608 1, // initiating PHY - 1M 6609 le_connection_scan_interval, // conn scan interval 6610 le_connection_scan_window, // conn scan windows 6611 le_connection_interval_min, // conn interval min 6612 le_connection_interval_max, // conn interval max 6613 le_connection_latency, // conn latency 6614 le_supervision_timeout, // conn latency 6615 le_minimum_ce_length, // min ce length 6616 le_maximum_ce_length // max ce length 6617 ); } 6618 else 6619 #endif 6620 { 6621 hci_send_cmd(&hci_le_create_connection, 6622 hci_stack->le_connection_scan_interval, // conn scan interval 6623 hci_stack->le_connection_scan_window, // conn scan windows 6624 0, // don't use whitelist 6625 connection->address_type, // peer address type 6626 connection->address, // peer bd addr 6627 hci_stack->le_connection_own_addr_type, // our addr type: 6628 hci_stack->le_connection_interval_min, // conn interval min 6629 hci_stack->le_connection_interval_max, // conn interval max 6630 hci_stack->le_connection_latency, // conn latency 6631 hci_stack->le_supervision_timeout, // conn latency 6632 hci_stack->le_minimum_ce_length, // min ce length 6633 hci_stack->le_maximum_ce_length // max ce length 6634 ); 6635 } 6636 connection->state = SENT_CREATE_CONNECTION; 6637 #endif 6638 #endif 6639 break; 6640 } 6641 return true; 6642 6643 #ifdef ENABLE_CLASSIC 6644 case RECEIVED_CONNECTION_REQUEST: 6645 connection->role = HCI_ROLE_SLAVE; 6646 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6647 log_info("sending hci_accept_connection_request"); 6648 connection->state = ACCEPTED_CONNECTION_REQUEST; 6649 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6650 return true; 6651 } 6652 break; 6653 #endif 6654 case SEND_DISCONNECT: 6655 connection->state = SENT_DISCONNECT; 6656 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6657 return true; 6658 6659 default: 6660 break; 6661 } 6662 6663 // no further commands if connection is about to get shut down 6664 if (connection->state == SENT_DISCONNECT) continue; 6665 6666 #ifdef ENABLE_CLASSIC 6667 6668 // Handling link key request requires remote supported features 6669 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6670 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6671 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6672 6673 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6674 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6675 if (have_link_key && security_level_sufficient){ 6676 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6677 } else { 6678 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6679 } 6680 return true; 6681 } 6682 6683 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6684 log_info("denying to pin request"); 6685 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6686 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6687 return true; 6688 } 6689 6690 // security assessment requires remote features 6691 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6692 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6693 hci_ssp_assess_security_on_io_cap_request(connection); 6694 // 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 6695 } 6696 6697 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6698 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6699 // set authentication requirements: 6700 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6701 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6702 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6703 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6704 authreq |= 1; 6705 } 6706 bool bonding = hci_stack->bondable; 6707 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6708 // if we have received IO Cap Response, we're in responder role 6709 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6710 if (bonding && !remote_bonding){ 6711 log_info("Remote not bonding, dropping local flag"); 6712 bonding = false; 6713 } 6714 } 6715 if (bonding){ 6716 if (connection->bonding_flags & BONDING_DEDICATED){ 6717 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6718 } else { 6719 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6720 } 6721 } 6722 uint8_t have_oob_data = 0; 6723 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6724 if (connection->classic_oob_c_192 != NULL){ 6725 have_oob_data |= 1; 6726 } 6727 if (connection->classic_oob_c_256 != NULL){ 6728 have_oob_data |= 2; 6729 } 6730 #endif 6731 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6732 return true; 6733 } 6734 6735 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6736 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6737 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6738 return true; 6739 } 6740 6741 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6742 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6743 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6744 const uint8_t zero[16] = { 0 }; 6745 const uint8_t * r_192 = zero; 6746 const uint8_t * c_192 = zero; 6747 const uint8_t * r_256 = zero; 6748 const uint8_t * c_256 = zero; 6749 // verify P-256 OOB 6750 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6751 c_256 = connection->classic_oob_c_256; 6752 if (connection->classic_oob_r_256 != NULL) { 6753 r_256 = connection->classic_oob_r_256; 6754 } 6755 } 6756 // verify P-192 OOB 6757 if ((connection->classic_oob_c_192 != NULL)) { 6758 c_192 = connection->classic_oob_c_192; 6759 if (connection->classic_oob_r_192 != NULL) { 6760 r_192 = connection->classic_oob_r_192; 6761 } 6762 } 6763 6764 // assess security 6765 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6766 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6767 if (need_level_4 && !can_reach_level_4){ 6768 log_info("Level 4 required, but not possible -> abort"); 6769 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6770 // send oob negative reply 6771 c_256 = NULL; 6772 c_192 = NULL; 6773 } 6774 6775 // Reply 6776 if (c_256 != zero) { 6777 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6778 } else if (c_192 != zero){ 6779 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6780 } else { 6781 hci_stack->classic_oob_con_handle = connection->con_handle; 6782 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6783 } 6784 return true; 6785 } 6786 #endif 6787 6788 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6789 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6790 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6791 return true; 6792 } 6793 6794 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6795 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6796 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6797 return true; 6798 } 6799 6800 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6801 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6802 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6803 return true; 6804 } 6805 6806 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6807 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6808 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6809 connection->state = SENT_DISCONNECT; 6810 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6811 return true; 6812 } 6813 6814 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6815 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6816 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6817 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6818 return true; 6819 } 6820 6821 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6822 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6823 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6824 return true; 6825 } 6826 6827 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 6828 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 6829 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 6830 return true; 6831 } 6832 6833 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 6834 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6835 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 6836 return true; 6837 } 6838 6839 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 6840 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 6841 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 6842 return true; 6843 } 6844 6845 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 6846 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 6847 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 6848 return true; 6849 } 6850 #endif 6851 6852 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 6853 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 6854 #ifdef ENABLE_CLASSIC 6855 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 6856 #endif 6857 if (connection->state != SENT_DISCONNECT){ 6858 connection->state = SENT_DISCONNECT; 6859 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 6860 return true; 6861 } 6862 } 6863 6864 #ifdef ENABLE_CLASSIC 6865 uint16_t sniff_min_interval; 6866 switch (connection->sniff_min_interval){ 6867 case 0: 6868 break; 6869 case 0xffff: 6870 connection->sniff_min_interval = 0; 6871 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 6872 return true; 6873 default: 6874 sniff_min_interval = connection->sniff_min_interval; 6875 connection->sniff_min_interval = 0; 6876 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 6877 return true; 6878 } 6879 6880 if (connection->sniff_subrating_max_latency != 0xffff){ 6881 uint16_t max_latency = connection->sniff_subrating_max_latency; 6882 connection->sniff_subrating_max_latency = 0; 6883 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 6884 return true; 6885 } 6886 6887 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 6888 uint8_t service_type = (uint8_t) connection->qos_service_type; 6889 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 6890 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); 6891 return true; 6892 } 6893 6894 if (connection->request_role != HCI_ROLE_INVALID){ 6895 hci_role_t role = connection->request_role; 6896 connection->request_role = HCI_ROLE_INVALID; 6897 hci_send_cmd(&hci_switch_role_command, connection->address, role); 6898 return true; 6899 } 6900 #endif 6901 6902 if (connection->gap_connection_tasks != 0){ 6903 #ifdef ENABLE_CLASSIC 6904 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6905 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6906 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6907 return true; 6908 } 6909 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6910 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6911 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6912 return true; 6913 } 6914 #endif 6915 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6916 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6917 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6918 return true; 6919 } 6920 } 6921 6922 #ifdef ENABLE_BLE 6923 switch (connection->le_con_parameter_update_state){ 6924 // response to L2CAP CON PARAMETER UPDATE REQUEST 6925 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 6926 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6927 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 6928 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6929 0x0000, 0xffff); 6930 return true; 6931 case CON_PARAMETER_UPDATE_REPLY: 6932 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6933 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 6934 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6935 0x0000, 0xffff); 6936 return true; 6937 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 6938 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6939 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 6940 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 6941 return true; 6942 default: 6943 break; 6944 } 6945 if (connection->le_phy_update_all_phys != 0xffu){ 6946 uint8_t all_phys = connection->le_phy_update_all_phys; 6947 connection->le_phy_update_all_phys = 0xff; 6948 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); 6949 return true; 6950 } 6951 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6952 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 6953 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 6954 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 6955 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 6956 return true; 6957 } 6958 #endif 6959 #endif 6960 } 6961 return false; 6962 } 6963 6964 static void hci_run(void){ 6965 6966 // stack state sub statemachines 6967 switch (hci_stack->state) { 6968 case HCI_STATE_INITIALIZING: 6969 hci_initializing_run(); 6970 break; 6971 case HCI_STATE_HALTING: 6972 hci_halting_run(); 6973 break; 6974 case HCI_STATE_FALLING_ASLEEP: 6975 hci_falling_asleep_run(); 6976 break; 6977 default: 6978 break; 6979 } 6980 6981 // allow to run after initialization to working transition 6982 if (hci_stack->state != HCI_STATE_WORKING){ 6983 return; 6984 } 6985 6986 bool done; 6987 6988 // send continuation fragments first, as they block the prepared packet buffer 6989 done = hci_run_acl_fragments(); 6990 if (done) return; 6991 6992 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6993 done = hci_run_iso_fragments(); 6994 if (done) return; 6995 #endif 6996 6997 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 6998 // send host num completed packets next as they don't require num_cmd_packets > 0 6999 if (!hci_can_send_comand_packet_transport()) return; 7000 if (hci_stack->host_completed_packets){ 7001 hci_host_num_completed_packets(); 7002 return; 7003 } 7004 #endif 7005 7006 if (!hci_can_send_command_packet_now()) return; 7007 7008 // global/non-connection oriented commands 7009 7010 7011 #ifdef ENABLE_CLASSIC 7012 // general gap classic 7013 done = hci_run_general_gap_classic(); 7014 if (done) return; 7015 #endif 7016 7017 #ifdef ENABLE_BLE 7018 // general gap le 7019 done = hci_run_general_gap_le(); 7020 if (done) return; 7021 7022 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7023 // ISO related tasks, e.g. BIG create/terminate/sync 7024 done = hci_run_iso_tasks(); 7025 if (done) return; 7026 #endif 7027 #endif 7028 7029 // send pending HCI commands 7030 hci_run_general_pending_commands(); 7031 } 7032 7033 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7034 // house-keeping 7035 7036 #ifdef ENABLE_CLASSIC 7037 bd_addr_t addr; 7038 hci_connection_t * conn; 7039 #endif 7040 #ifdef ENABLE_LE_CENTRAL 7041 uint8_t initiator_filter_policy; 7042 #endif 7043 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7044 uint8_t i; 7045 uint8_t num_cis; 7046 hci_con_handle_t cis_handle; 7047 uint8_t status; 7048 #endif 7049 7050 uint16_t opcode = little_endian_read_16(packet, 0); 7051 switch (opcode) { 7052 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7053 hci_stack->loopback_mode = packet[3]; 7054 break; 7055 7056 #ifdef ENABLE_CLASSIC 7057 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7058 reverse_bd_addr(&packet[3], addr); 7059 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7060 7061 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7062 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7063 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7064 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7065 } 7066 7067 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7068 if (!conn) { 7069 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7070 if (!conn) { 7071 // notify client that alloc failed 7072 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7073 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7074 } 7075 conn->state = SEND_CREATE_CONNECTION; 7076 conn->role = HCI_ROLE_MASTER; 7077 } 7078 7079 log_info("conn state %u", conn->state); 7080 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7081 switch (conn->state) { 7082 // if connection active exists 7083 case OPEN: 7084 // and OPEN, emit connection complete command 7085 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7086 // packet not sent to controller 7087 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7088 case RECEIVED_DISCONNECTION_COMPLETE: 7089 // create connection triggered in disconnect complete event, let's do it now 7090 break; 7091 case SEND_CREATE_CONNECTION: 7092 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7093 if (hci_classic_operation_active()){ 7094 return ERROR_CODE_SUCCESS; 7095 } 7096 #endif 7097 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7098 break; 7099 default: 7100 // otherwise, just ignore as it is already in the open process 7101 // packet not sent to controller 7102 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7103 } 7104 conn->state = SENT_CREATE_CONNECTION; 7105 7106 // track outgoing connection 7107 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7108 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7109 break; 7110 7111 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 7112 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7113 // setup_synchronous_connection? Voice setting at offset 22 7114 // TODO: compare to current setting if sco connection already active 7115 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7116 break; 7117 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7118 // accept_synchronous_connection? Voice setting at offset 18 7119 // TODO: compare to current setting if sco connection already active 7120 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7121 // track outgoing connection 7122 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7123 reverse_bd_addr(&packet[3], hci_stack->outgoing_addr); 7124 break; 7125 #endif 7126 #endif 7127 7128 #ifdef ENABLE_BLE 7129 #ifdef ENABLE_LE_CENTRAL 7130 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7131 // white list used? 7132 initiator_filter_policy = packet[7]; 7133 switch (initiator_filter_policy) { 7134 case 0: 7135 // whitelist not used 7136 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7137 break; 7138 case 1: 7139 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7140 break; 7141 default: 7142 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7143 break; 7144 } 7145 // track outgoing connection 7146 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer addres type 7147 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7148 break; 7149 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7150 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7151 break; 7152 #endif 7153 #endif /* ENABLE_BLE */ 7154 default: 7155 break; 7156 } 7157 7158 hci_stack->num_cmd_packets--; 7159 7160 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7161 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7162 if (err != 0){ 7163 return ERROR_CODE_HARDWARE_FAILURE; 7164 } 7165 return ERROR_CODE_SUCCESS; 7166 } 7167 7168 // disconnect because of security block 7169 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7170 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7171 if (!connection) return; 7172 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7173 } 7174 7175 7176 // Configure Secure Simple Pairing 7177 7178 #ifdef ENABLE_CLASSIC 7179 7180 // enable will enable SSP during init 7181 void gap_ssp_set_enable(int enable){ 7182 hci_stack->ssp_enable = enable; 7183 } 7184 7185 static int hci_local_ssp_activated(void){ 7186 return gap_ssp_supported() && hci_stack->ssp_enable; 7187 } 7188 7189 // if set, BTstack will respond to io capability request using authentication requirement 7190 void gap_ssp_set_io_capability(int io_capability){ 7191 hci_stack->ssp_io_capability = io_capability; 7192 } 7193 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7194 hci_stack->ssp_authentication_requirement = authentication_requirement; 7195 } 7196 7197 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7198 void gap_ssp_set_auto_accept(int auto_accept){ 7199 hci_stack->ssp_auto_accept = auto_accept; 7200 } 7201 7202 void gap_secure_connections_enable(bool enable){ 7203 hci_stack->secure_connections_enable = enable; 7204 } 7205 bool gap_secure_connections_active(void){ 7206 return hci_stack->secure_connections_active; 7207 } 7208 7209 #endif 7210 7211 // va_list part of hci_send_cmd 7212 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7213 if (!hci_can_send_command_packet_now()){ 7214 log_error("hci_send_cmd called but cannot send packet now"); 7215 return ERROR_CODE_COMMAND_DISALLOWED; 7216 } 7217 7218 // for HCI INITIALIZATION 7219 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7220 hci_stack->last_cmd_opcode = cmd->opcode; 7221 7222 hci_reserve_packet_buffer(); 7223 uint8_t * packet = hci_stack->hci_packet_buffer; 7224 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7225 uint8_t status = hci_send_cmd_packet(packet, size); 7226 7227 // release packet buffer on error or for synchronous transport implementations 7228 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7229 hci_release_packet_buffer(); 7230 hci_emit_transport_packet_sent(); 7231 } 7232 7233 return status; 7234 } 7235 7236 /** 7237 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7238 */ 7239 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7240 va_list argptr; 7241 va_start(argptr, cmd); 7242 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7243 va_end(argptr); 7244 return status; 7245 } 7246 7247 // Create various non-HCI events. 7248 // TODO: generalize, use table similar to hci_create_command 7249 7250 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7251 // dump packet 7252 if (dump) { 7253 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7254 } 7255 7256 // dispatch to all event handlers 7257 btstack_linked_list_iterator_t it; 7258 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7259 while (btstack_linked_list_iterator_has_next(&it)){ 7260 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7261 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7262 } 7263 } 7264 7265 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7266 if (!hci_stack->acl_packet_handler) return; 7267 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7268 } 7269 7270 #ifdef ENABLE_CLASSIC 7271 static void hci_notify_if_sco_can_send_now(void){ 7272 // notify SCO sender if waiting 7273 if (!hci_stack->sco_waiting_for_can_send_now) return; 7274 if (hci_can_send_sco_packet_now()){ 7275 hci_stack->sco_waiting_for_can_send_now = 0; 7276 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7277 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7278 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7279 } 7280 } 7281 7282 // parsing end emitting has been merged to reduce code size 7283 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7284 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7285 7286 uint8_t * eir_data; 7287 ad_context_t context; 7288 const uint8_t * name; 7289 uint8_t name_len; 7290 7291 if (size < 3) return; 7292 7293 int event_type = hci_event_packet_get_type(packet); 7294 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7295 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7296 7297 switch (event_type){ 7298 case HCI_EVENT_INQUIRY_RESULT: 7299 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7300 if (size != (3 + (num_responses * 14))) return; 7301 break; 7302 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7303 if (size != 257) return; 7304 if (num_responses != 1) return; 7305 break; 7306 default: 7307 return; 7308 } 7309 7310 // event[1] is set at the end 7311 int i; 7312 for (i=0; i<num_responses;i++){ 7313 memset(event, 0, sizeof(event)); 7314 event[0] = GAP_EVENT_INQUIRY_RESULT; 7315 uint8_t event_size = 27; // if name is not set by EIR 7316 7317 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7318 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7319 (void)memcpy(&event[9], 7320 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7321 3); // class of device 7322 (void)memcpy(&event[12], 7323 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7324 2); // clock offset 7325 7326 switch (event_type){ 7327 case HCI_EVENT_INQUIRY_RESULT: 7328 // 14,15,16,17 = 0, size 18 7329 break; 7330 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7331 event[14] = 1; 7332 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7333 // 16,17 = 0, size 18 7334 break; 7335 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7336 event[14] = 1; 7337 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7338 // EIR packets only contain a single inquiry response 7339 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7340 name = NULL; 7341 // Iterate over EIR data 7342 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7343 uint8_t data_type = ad_iterator_get_data_type(&context); 7344 uint8_t data_size = ad_iterator_get_data_len(&context); 7345 const uint8_t * data = ad_iterator_get_data(&context); 7346 // Prefer Complete Local Name over Shortened Local Name 7347 switch (data_type){ 7348 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7349 if (name) continue; 7350 /* fall through */ 7351 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7352 name = data; 7353 name_len = data_size; 7354 break; 7355 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7356 if (data_size != 8) break; 7357 event[16] = 1; 7358 memcpy(&event[17], data, 8); 7359 break; 7360 default: 7361 break; 7362 } 7363 } 7364 if (name){ 7365 event[25] = 1; 7366 // truncate name if needed 7367 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7368 event[26] = len; 7369 (void)memcpy(&event[27], name, len); 7370 event_size += len; 7371 } 7372 break; 7373 default: 7374 return; 7375 } 7376 event[1] = event_size - 2; 7377 hci_emit_event(event, event_size, 1); 7378 } 7379 } 7380 #endif 7381 7382 void hci_emit_state(void){ 7383 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7384 uint8_t event[3]; 7385 event[0] = BTSTACK_EVENT_STATE; 7386 event[1] = sizeof(event) - 2u; 7387 event[2] = hci_stack->state; 7388 hci_emit_event(event, sizeof(event), 1); 7389 } 7390 7391 #ifdef ENABLE_CLASSIC 7392 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7393 uint8_t event[13]; 7394 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7395 event[1] = sizeof(event) - 2; 7396 event[2] = status; 7397 little_endian_store_16(event, 3, con_handle); 7398 reverse_bd_addr(address, &event[5]); 7399 event[11] = 1; // ACL connection 7400 event[12] = 0; // encryption disabled 7401 hci_emit_event(event, sizeof(event), 1); 7402 } 7403 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7404 if (disable_l2cap_timeouts) return; 7405 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7406 uint8_t event[4]; 7407 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7408 event[1] = sizeof(event) - 2; 7409 little_endian_store_16(event, 2, conn->con_handle); 7410 hci_emit_event(event, sizeof(event), 1); 7411 } 7412 #endif 7413 7414 #ifdef ENABLE_BLE 7415 #ifdef ENABLE_LE_CENTRAL 7416 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){ 7417 uint8_t event[21]; 7418 event[0] = HCI_EVENT_LE_META; 7419 event[1] = sizeof(event) - 2u; 7420 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7421 event[3] = status; 7422 little_endian_store_16(event, 4, con_handle); 7423 event[6] = 0; // TODO: role 7424 event[7] = address_type; 7425 reverse_bd_addr(address, &event[8]); 7426 little_endian_store_16(event, 14, 0); // interval 7427 little_endian_store_16(event, 16, 0); // latency 7428 little_endian_store_16(event, 18, 0); // supervision timeout 7429 event[20] = 0; // master clock accuracy 7430 hci_emit_event(event, sizeof(event), 1); 7431 } 7432 #endif 7433 #endif 7434 7435 static void hci_emit_transport_packet_sent(void){ 7436 // notify upper stack that it might be possible to send again 7437 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7438 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7439 } 7440 7441 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7442 uint8_t event[6]; 7443 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7444 event[1] = sizeof(event) - 2u; 7445 event[2] = 0; // status = OK 7446 little_endian_store_16(event, 3, con_handle); 7447 event[5] = reason; 7448 hci_emit_event(event, sizeof(event), 1); 7449 } 7450 7451 static void hci_emit_nr_connections_changed(void){ 7452 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7453 uint8_t event[3]; 7454 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7455 event[1] = sizeof(event) - 2u; 7456 event[2] = nr_hci_connections(); 7457 hci_emit_event(event, sizeof(event), 1); 7458 } 7459 7460 static void hci_emit_hci_open_failed(void){ 7461 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7462 uint8_t event[2]; 7463 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7464 event[1] = sizeof(event) - 2u; 7465 hci_emit_event(event, sizeof(event), 1); 7466 } 7467 7468 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7469 log_info("hci_emit_dedicated_bonding_result %u ", status); 7470 uint8_t event[9]; 7471 int pos = 0; 7472 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7473 event[pos++] = sizeof(event) - 2u; 7474 event[pos++] = status; 7475 reverse_bd_addr(address, &event[pos]); 7476 hci_emit_event(event, sizeof(event), 1); 7477 } 7478 7479 7480 #ifdef ENABLE_CLASSIC 7481 7482 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7483 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7484 uint8_t event[5]; 7485 int pos = 0; 7486 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7487 event[pos++] = sizeof(event) - 2; 7488 little_endian_store_16(event, 2, con_handle); 7489 pos += 2; 7490 event[pos++] = level; 7491 hci_emit_event(event, sizeof(event), 1); 7492 } 7493 7494 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7495 if (!connection) return LEVEL_0; 7496 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7497 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7498 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7499 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7500 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7501 // LEVEL 4 always requires 128 bit encrytion key size 7502 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7503 security_level = LEVEL_3; 7504 } 7505 return security_level; 7506 } 7507 7508 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7509 uint8_t event[4]; 7510 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7511 event[1] = sizeof(event) - 2; 7512 event[2] = discoverable; 7513 event[3] = connectable; 7514 hci_emit_event(event, sizeof(event), 1); 7515 } 7516 7517 // query if remote side supports eSCO 7518 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7519 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7520 if (!connection) return false; 7521 return (connection->remote_supported_features[0] & 1) != 0; 7522 } 7523 7524 static bool hci_ssp_supported(hci_connection_t * connection){ 7525 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7526 return (connection->bonding_flags & mask) == mask; 7527 } 7528 7529 // query if remote side supports SSP 7530 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7531 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7532 if (!connection) return false; 7533 return hci_ssp_supported(connection) ? 1 : 0; 7534 } 7535 7536 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7537 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7538 } 7539 7540 /** 7541 * Check if remote supported features query has completed 7542 */ 7543 bool hci_remote_features_available(hci_con_handle_t handle){ 7544 hci_connection_t * connection = hci_connection_for_handle(handle); 7545 if (!connection) return false; 7546 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7547 } 7548 7549 /** 7550 * Trigger remote supported features query 7551 */ 7552 7553 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7554 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7555 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7556 } 7557 } 7558 7559 void hci_remote_features_query(hci_con_handle_t con_handle){ 7560 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7561 if (!connection) return; 7562 hci_trigger_remote_features_for_connection(connection); 7563 hci_run(); 7564 } 7565 7566 // GAP API 7567 /** 7568 * @bbrief enable/disable bonding. default is enabled 7569 * @praram enabled 7570 */ 7571 void gap_set_bondable_mode(int enable){ 7572 hci_stack->bondable = enable ? 1 : 0; 7573 } 7574 /** 7575 * @brief Get bondable mode. 7576 * @return 1 if bondable 7577 */ 7578 int gap_get_bondable_mode(void){ 7579 return hci_stack->bondable; 7580 } 7581 7582 /** 7583 * @brief map link keys to security levels 7584 */ 7585 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7586 switch (link_key_type){ 7587 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7588 return LEVEL_4; 7589 case COMBINATION_KEY: 7590 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7591 return LEVEL_3; 7592 default: 7593 return LEVEL_2; 7594 } 7595 } 7596 7597 /** 7598 * @brief map link keys to secure connection yes/no 7599 */ 7600 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7601 switch (link_key_type){ 7602 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7603 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7604 return true; 7605 default: 7606 return false; 7607 } 7608 } 7609 7610 /** 7611 * @brief map link keys to authenticated 7612 */ 7613 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7614 switch (link_key_type){ 7615 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7616 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7617 return true; 7618 default: 7619 return false; 7620 } 7621 } 7622 7623 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7624 log_info("gap_mitm_protection_required_for_security_level %u", level); 7625 return level > LEVEL_2; 7626 } 7627 7628 /** 7629 * @brief get current security level 7630 */ 7631 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7632 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7633 if (!connection) return LEVEL_0; 7634 return gap_security_level_for_connection(connection); 7635 } 7636 7637 /** 7638 * @brief request connection to device to 7639 * @result GAP_AUTHENTICATION_RESULT 7640 */ 7641 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7642 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7643 if (!connection){ 7644 hci_emit_security_level(con_handle, LEVEL_0); 7645 return; 7646 } 7647 7648 btstack_assert(hci_is_le_connection(connection) == false); 7649 7650 // 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) 7651 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7652 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7653 requested_level = LEVEL_4; 7654 } 7655 7656 gap_security_level_t current_level = gap_security_level(con_handle); 7657 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7658 requested_level, connection->requested_security_level, current_level); 7659 7660 // authentication active if authentication request was sent or planned level > 0 7661 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7662 if (authentication_active){ 7663 // authentication already active 7664 if (connection->requested_security_level < requested_level){ 7665 // increase requested level as new level is higher 7666 // TODO: handle re-authentication when done 7667 connection->requested_security_level = requested_level; 7668 } 7669 } else { 7670 // no request active, notify if security sufficient 7671 if (requested_level <= current_level){ 7672 hci_emit_security_level(con_handle, current_level); 7673 return; 7674 } 7675 7676 // store request 7677 connection->requested_security_level = requested_level; 7678 7679 // start to authenticate connection 7680 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7681 7682 // request remote features if not already active, also trigger hci_run 7683 hci_remote_features_query(con_handle); 7684 } 7685 } 7686 7687 /** 7688 * @brief start dedicated bonding with device. disconnect after bonding 7689 * @param device 7690 * @param request MITM protection 7691 * @result GAP_DEDICATED_BONDING_COMPLETE 7692 */ 7693 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7694 7695 // create connection state machine 7696 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7697 7698 if (!connection){ 7699 return BTSTACK_MEMORY_ALLOC_FAILED; 7700 } 7701 7702 // delete linkn key 7703 gap_drop_link_key_for_bd_addr(device); 7704 7705 // configure LEVEL_2/3, dedicated bonding 7706 connection->state = SEND_CREATE_CONNECTION; 7707 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7708 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7709 connection->bonding_flags = BONDING_DEDICATED; 7710 7711 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7712 7713 // handle: connnection failure (connection complete != ok) 7714 // handle: authentication failure 7715 // handle: disconnect on done 7716 7717 hci_run(); 7718 7719 return 0; 7720 } 7721 7722 void gap_set_local_name(const char * local_name){ 7723 hci_stack->local_name = local_name; 7724 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7725 // also update EIR if not set by user 7726 if (hci_stack->eir_data == NULL){ 7727 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7728 } 7729 hci_run(); 7730 } 7731 #endif 7732 7733 7734 #ifdef ENABLE_BLE 7735 7736 #ifdef ENABLE_LE_CENTRAL 7737 void gap_start_scan(void){ 7738 hci_stack->le_scanning_enabled = true; 7739 hci_run(); 7740 } 7741 7742 void gap_stop_scan(void){ 7743 hci_stack->le_scanning_enabled = false; 7744 hci_run(); 7745 } 7746 7747 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7748 hci_stack->le_scan_type = scan_type; 7749 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7750 hci_stack->le_scan_interval = scan_interval; 7751 hci_stack->le_scan_window = scan_window; 7752 hci_stack->le_scanning_param_update = true; 7753 hci_run(); 7754 } 7755 7756 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7757 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 7758 } 7759 7760 void gap_set_scan_duplicate_filter(bool enabled){ 7761 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 7762 } 7763 7764 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 7765 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 7766 if (!conn){ 7767 // disallow if le connection is already outgoing 7768 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7769 log_error("le connection already active"); 7770 return ERROR_CODE_COMMAND_DISALLOWED; 7771 } 7772 7773 log_info("gap_connect: no connection exists yet, creating context"); 7774 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 7775 if (!conn){ 7776 // notify client that alloc failed 7777 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7778 log_info("gap_connect: failed to alloc hci_connection_t"); 7779 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 7780 } 7781 7782 // set le connecting state 7783 if (hci_is_le_connection_type(addr_type)){ 7784 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 7785 } 7786 7787 conn->state = SEND_CREATE_CONNECTION; 7788 log_info("gap_connect: send create connection next"); 7789 hci_run(); 7790 return ERROR_CODE_SUCCESS; 7791 } 7792 7793 if (!hci_is_le_connection(conn) || 7794 (conn->state == SEND_CREATE_CONNECTION) || 7795 (conn->state == SENT_CREATE_CONNECTION)) { 7796 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 7797 log_error("gap_connect: classic connection or connect is already being created"); 7798 return GATT_CLIENT_IN_WRONG_STATE; 7799 } 7800 7801 // check if connection was just disconnected 7802 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7803 log_info("gap_connect: send create connection (again)"); 7804 conn->state = SEND_CREATE_CONNECTION; 7805 hci_run(); 7806 return ERROR_CODE_SUCCESS; 7807 } 7808 7809 log_info("gap_connect: context exists with state %u", conn->state); 7810 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 7811 hci_run(); 7812 return ERROR_CODE_SUCCESS; 7813 } 7814 7815 // @assumption: only a single outgoing LE Connection exists 7816 static hci_connection_t * gap_get_outgoing_connection(void){ 7817 btstack_linked_item_t *it; 7818 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7819 hci_connection_t * conn = (hci_connection_t *) it; 7820 if (!hci_is_le_connection(conn)) continue; 7821 switch (conn->state){ 7822 case SEND_CREATE_CONNECTION: 7823 case SENT_CREATE_CONNECTION: 7824 return conn; 7825 default: 7826 break; 7827 }; 7828 } 7829 return NULL; 7830 } 7831 7832 uint8_t gap_connect_cancel(void){ 7833 hci_connection_t * conn; 7834 switch (hci_stack->le_connecting_request){ 7835 case LE_CONNECTING_IDLE: 7836 break; 7837 case LE_CONNECTING_WHITELIST: 7838 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7839 hci_run(); 7840 break; 7841 case LE_CONNECTING_DIRECT: 7842 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7843 conn = gap_get_outgoing_connection(); 7844 if (conn == NULL){ 7845 hci_run(); 7846 } else { 7847 switch (conn->state){ 7848 case SEND_CREATE_CONNECTION: 7849 // skip sending create connection and emit event instead 7850 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 7851 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 7852 btstack_memory_hci_connection_free( conn ); 7853 break; 7854 case SENT_CREATE_CONNECTION: 7855 // let hci_run_general_gap_le cancel outgoing connection 7856 hci_run(); 7857 break; 7858 default: 7859 break; 7860 } 7861 } 7862 break; 7863 default: 7864 btstack_unreachable(); 7865 break; 7866 } 7867 return ERROR_CODE_SUCCESS; 7868 } 7869 7870 /** 7871 * @brief Set connection parameters for outgoing connections 7872 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 7873 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 7874 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 7875 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 7876 * @param conn_latency, default: 4 7877 * @param supervision_timeout (unit: 10ms), default: 720 ms 7878 * @param min_ce_length (unit: 0.625ms), default: 10 ms 7879 * @param max_ce_length (unit: 0.625ms), default: 30 ms 7880 */ 7881 7882 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 7883 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 7884 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 7885 hci_stack->le_connection_scan_interval = conn_scan_interval; 7886 hci_stack->le_connection_scan_window = conn_scan_window; 7887 hci_stack->le_connection_interval_min = conn_interval_min; 7888 hci_stack->le_connection_interval_max = conn_interval_max; 7889 hci_stack->le_connection_latency = conn_latency; 7890 hci_stack->le_supervision_timeout = supervision_timeout; 7891 hci_stack->le_minimum_ce_length = min_ce_length; 7892 hci_stack->le_maximum_ce_length = max_ce_length; 7893 } 7894 #endif 7895 7896 /** 7897 * @brief Updates the connection parameters for a given LE connection 7898 * @param handle 7899 * @param conn_interval_min (unit: 1.25ms) 7900 * @param conn_interval_max (unit: 1.25ms) 7901 * @param conn_latency 7902 * @param supervision_timeout (unit: 10ms) 7903 * @return 0 if ok 7904 */ 7905 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7906 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7907 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7908 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7909 connection->le_conn_interval_min = conn_interval_min; 7910 connection->le_conn_interval_max = conn_interval_max; 7911 connection->le_conn_latency = conn_latency; 7912 connection->le_supervision_timeout = supervision_timeout; 7913 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 7914 hci_run(); 7915 return 0; 7916 } 7917 7918 /** 7919 * @brief Request an update of the connection parameter for a given LE connection 7920 * @param handle 7921 * @param conn_interval_min (unit: 1.25ms) 7922 * @param conn_interval_max (unit: 1.25ms) 7923 * @param conn_latency 7924 * @param supervision_timeout (unit: 10ms) 7925 * @return 0 if ok 7926 */ 7927 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7928 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7929 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7930 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7931 connection->le_conn_interval_min = conn_interval_min; 7932 connection->le_conn_interval_max = conn_interval_max; 7933 connection->le_conn_latency = conn_latency; 7934 connection->le_supervision_timeout = supervision_timeout; 7935 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 7936 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 7937 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 7938 return 0; 7939 } 7940 7941 #ifdef ENABLE_LE_PERIPHERAL 7942 7943 /** 7944 * @brief Set Advertisement Data 7945 * @param advertising_data_length 7946 * @param advertising_data (max 31 octets) 7947 * @note data is not copied, pointer has to stay valid 7948 */ 7949 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 7950 hci_stack->le_advertisements_data_len = advertising_data_length; 7951 hci_stack->le_advertisements_data = advertising_data; 7952 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7953 hci_run(); 7954 } 7955 7956 /** 7957 * @brief Set Scan Response Data 7958 * @param advertising_data_length 7959 * @param advertising_data (max 31 octets) 7960 * @note data is not copied, pointer has to stay valid 7961 */ 7962 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 7963 hci_stack->le_scan_response_data_len = scan_response_data_length; 7964 hci_stack->le_scan_response_data = scan_response_data; 7965 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7966 hci_run(); 7967 } 7968 7969 /** 7970 * @brief Set Advertisement Parameters 7971 * @param adv_int_min 7972 * @param adv_int_max 7973 * @param adv_type 7974 * @param direct_address_type 7975 * @param direct_address 7976 * @param channel_map 7977 * @param filter_policy 7978 * 7979 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 7980 */ 7981 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 7982 uint8_t direct_address_typ, bd_addr_t direct_address, 7983 uint8_t channel_map, uint8_t filter_policy) { 7984 7985 hci_stack->le_advertisements_interval_min = adv_int_min; 7986 hci_stack->le_advertisements_interval_max = adv_int_max; 7987 hci_stack->le_advertisements_type = adv_type; 7988 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 7989 hci_stack->le_advertisements_channel_map = channel_map; 7990 hci_stack->le_advertisements_filter_policy = filter_policy; 7991 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 7992 6); 7993 7994 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7995 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 7996 hci_run(); 7997 } 7998 7999 /** 8000 * @brief Enable/Disable Advertisements 8001 * @param enabled 8002 */ 8003 void gap_advertisements_enable(int enabled){ 8004 if (enabled == 0){ 8005 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8006 } else { 8007 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8008 } 8009 hci_update_advertisements_enabled_for_current_roles(); 8010 hci_run(); 8011 } 8012 8013 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8014 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8015 btstack_linked_list_iterator_t it; 8016 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8017 while (btstack_linked_list_iterator_has_next(&it)){ 8018 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8019 if ( item->advertising_handle == advertising_handle ) { 8020 return item; 8021 } 8022 } 8023 return NULL; 8024 } 8025 8026 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8027 // find free advertisement handle 8028 uint8_t advertisement_handle; 8029 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8030 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8031 } 8032 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8033 // clear 8034 memset(storage, 0, sizeof(le_advertising_set_t)); 8035 // copy params 8036 storage->advertising_handle = advertisement_handle; 8037 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8038 // add to list 8039 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8040 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8041 *out_advertising_handle = advertisement_handle; 8042 // set tasks and start 8043 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8044 hci_run(); 8045 return ERROR_CODE_SUCCESS; 8046 } 8047 8048 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8049 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8050 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8051 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8052 // set tasks and start 8053 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8054 hci_run(); 8055 return ERROR_CODE_SUCCESS; 8056 } 8057 8058 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8059 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8060 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8061 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8062 return ERROR_CODE_SUCCESS; 8063 } 8064 8065 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8066 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8067 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8068 memcpy(advertising_set->random_address, random_address, 6); 8069 // set tasks and start 8070 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8071 hci_run(); 8072 return ERROR_CODE_SUCCESS; 8073 } 8074 8075 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8076 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8077 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8078 advertising_set->adv_data = advertising_data; 8079 advertising_set->adv_data_len = advertising_data_length; 8080 // set tasks and start 8081 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8082 hci_run(); 8083 return ERROR_CODE_SUCCESS; 8084 } 8085 8086 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){ 8087 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8088 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8089 advertising_set->scan_data = scan_response_data; 8090 advertising_set->scan_data_len = scan_response_data_length; 8091 // set tasks and start 8092 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8093 hci_run(); 8094 return ERROR_CODE_SUCCESS; 8095 } 8096 8097 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8098 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8099 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8100 advertising_set->enable_timeout = timeout; 8101 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8102 // set tasks and start 8103 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8104 hci_run(); 8105 return ERROR_CODE_SUCCESS; 8106 } 8107 8108 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8109 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8110 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8111 // set tasks and start 8112 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8113 hci_run(); 8114 return ERROR_CODE_SUCCESS; 8115 } 8116 8117 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8118 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8119 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8120 // set tasks and start 8121 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8122 hci_run(); 8123 return ERROR_CODE_SUCCESS; 8124 } 8125 8126 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8127 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8128 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8129 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8130 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8131 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8132 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8133 // set tasks and start 8134 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8135 hci_run(); 8136 return ERROR_CODE_SUCCESS; 8137 } 8138 8139 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8140 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8141 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8142 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8143 return ERROR_CODE_SUCCESS; 8144 } 8145 8146 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8147 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8148 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8149 advertising_set->periodic_data = periodic_data; 8150 advertising_set->periodic_data_len = periodic_data_length; 8151 // set tasks and start 8152 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8153 hci_run(); 8154 return ERROR_CODE_SUCCESS; 8155 } 8156 8157 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8158 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8159 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8160 // set tasks and start 8161 advertising_set->periodic_include_adi = include_adi; 8162 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8163 hci_run(); 8164 return ERROR_CODE_SUCCESS; 8165 } 8166 8167 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8168 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8169 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8170 // set tasks and start 8171 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8172 hci_run(); 8173 return ERROR_CODE_SUCCESS; 8174 } 8175 8176 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8177 hci_stack->le_past_mode = mode; 8178 hci_stack->le_past_skip = skip; 8179 hci_stack->le_past_sync_timeout = sync_timeout; 8180 hci_stack->le_past_cte_type = cte_type; 8181 hci_stack->le_past_set_default_params = true; 8182 hci_run(); 8183 return ERROR_CODE_SUCCESS; 8184 } 8185 8186 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8187 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8188 if (hci_connection == NULL){ 8189 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8190 } 8191 hci_connection->le_past_sync_handle = sync_handle; 8192 hci_connection->le_past_service_data = service_data; 8193 hci_run(); 8194 return ERROR_CODE_SUCCESS; 8195 } 8196 8197 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8198 8199 #endif 8200 8201 #endif 8202 8203 void hci_le_set_own_address_type(uint8_t own_address_type){ 8204 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8205 if (own_address_type == hci_stack->le_own_addr_type) return; 8206 hci_stack->le_own_addr_type = own_address_type; 8207 8208 #ifdef ENABLE_LE_PERIPHERAL 8209 // update advertisement parameters, too 8210 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8211 hci_run(); 8212 #endif 8213 #ifdef ENABLE_LE_CENTRAL 8214 // note: we don't update scan parameters or modify ongoing connection attempts 8215 #endif 8216 } 8217 8218 void hci_le_random_address_set(const bd_addr_t random_address){ 8219 memcpy(hci_stack->le_random_address, random_address, 6); 8220 hci_stack->le_random_address_set = true; 8221 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8222 hci_run(); 8223 } 8224 8225 #endif 8226 8227 uint8_t gap_disconnect(hci_con_handle_t handle){ 8228 hci_connection_t * conn = hci_connection_for_handle(handle); 8229 if (!conn){ 8230 hci_emit_disconnection_complete(handle, 0); 8231 return 0; 8232 } 8233 // ignore if already disconnected 8234 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8235 return 0; 8236 } 8237 conn->state = SEND_DISCONNECT; 8238 hci_run(); 8239 return 0; 8240 } 8241 8242 int gap_read_rssi(hci_con_handle_t con_handle){ 8243 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8244 if (hci_connection == NULL) return 0; 8245 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8246 hci_run(); 8247 return 1; 8248 } 8249 8250 /** 8251 * @brief Get connection type 8252 * @param con_handle 8253 * @result connection_type 8254 */ 8255 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8256 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8257 if (!conn) return GAP_CONNECTION_INVALID; 8258 switch (conn->address_type){ 8259 case BD_ADDR_TYPE_LE_PUBLIC: 8260 case BD_ADDR_TYPE_LE_RANDOM: 8261 return GAP_CONNECTION_LE; 8262 case BD_ADDR_TYPE_SCO: 8263 return GAP_CONNECTION_SCO; 8264 case BD_ADDR_TYPE_ACL: 8265 return GAP_CONNECTION_ACL; 8266 default: 8267 return GAP_CONNECTION_INVALID; 8268 } 8269 } 8270 8271 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8272 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8273 if (!conn) return HCI_ROLE_INVALID; 8274 return (hci_role_t) conn->role; 8275 } 8276 8277 8278 #ifdef ENABLE_CLASSIC 8279 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8280 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8281 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8282 conn->request_role = role; 8283 hci_run(); 8284 return ERROR_CODE_SUCCESS; 8285 } 8286 #endif 8287 8288 #ifdef ENABLE_BLE 8289 8290 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){ 8291 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8292 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8293 8294 conn->le_phy_update_all_phys = all_phys; 8295 conn->le_phy_update_tx_phys = tx_phys; 8296 conn->le_phy_update_rx_phys = rx_phys; 8297 conn->le_phy_update_phy_options = phy_options; 8298 8299 hci_run(); 8300 8301 return 0; 8302 } 8303 8304 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8305 // check if already in list 8306 btstack_linked_list_iterator_t it; 8307 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8308 while (btstack_linked_list_iterator_has_next(&it)) { 8309 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8310 if (entry->address_type != address_type) { 8311 continue; 8312 } 8313 if (memcmp(entry->address, address, 6) != 0) { 8314 continue; 8315 } 8316 // disallow if already scheduled to add 8317 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 8318 return ERROR_CODE_COMMAND_DISALLOWED; 8319 } 8320 // still on controller, but scheduled to remove -> re-add 8321 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 8322 return ERROR_CODE_SUCCESS; 8323 } 8324 // alloc and add to list 8325 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8326 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8327 entry->address_type = address_type; 8328 (void)memcpy(entry->address, address, 6); 8329 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8330 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8331 return ERROR_CODE_SUCCESS; 8332 } 8333 8334 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8335 btstack_linked_list_iterator_t it; 8336 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8337 while (btstack_linked_list_iterator_has_next(&it)){ 8338 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8339 if (entry->address_type != address_type) { 8340 continue; 8341 } 8342 if (memcmp(entry->address, address, 6) != 0) { 8343 continue; 8344 } 8345 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8346 // remove from controller if already present 8347 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8348 } else { 8349 // directly remove entry from whitelist 8350 btstack_linked_list_iterator_remove(&it); 8351 btstack_memory_whitelist_entry_free(entry); 8352 } 8353 return ERROR_CODE_SUCCESS; 8354 } 8355 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8356 } 8357 8358 static void hci_whitelist_clear(void){ 8359 btstack_linked_list_iterator_t it; 8360 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8361 while (btstack_linked_list_iterator_has_next(&it)){ 8362 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8363 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8364 // remove from controller if already present 8365 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8366 continue; 8367 } 8368 // directly remove entry from whitelist 8369 btstack_linked_list_iterator_remove(&it); 8370 btstack_memory_whitelist_entry_free(entry); 8371 } 8372 } 8373 8374 // free all entries unconditionally 8375 static void hci_whitelist_free(void){ 8376 btstack_linked_list_iterator_t lit; 8377 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 8378 while (btstack_linked_list_iterator_has_next(&lit)){ 8379 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 8380 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 8381 btstack_memory_whitelist_entry_free(entry); 8382 } 8383 } 8384 8385 /** 8386 * @brief Clear Whitelist 8387 * @return 0 if ok 8388 */ 8389 uint8_t gap_whitelist_clear(void){ 8390 hci_whitelist_clear(); 8391 hci_run(); 8392 return ERROR_CODE_SUCCESS; 8393 } 8394 8395 /** 8396 * @brief Add Device to Whitelist 8397 * @param address_typ 8398 * @param address 8399 * @return 0 if ok 8400 */ 8401 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8402 uint8_t status = hci_whitelist_add(address_type, address); 8403 if (status){ 8404 return status; 8405 } 8406 hci_run(); 8407 return ERROR_CODE_SUCCESS; 8408 } 8409 8410 /** 8411 * @brief Remove Device from Whitelist 8412 * @param address_typ 8413 * @param address 8414 * @return 0 if ok 8415 */ 8416 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8417 uint8_t status = hci_whitelist_remove(address_type, address); 8418 if (status){ 8419 return status; 8420 } 8421 hci_run(); 8422 return ERROR_CODE_SUCCESS; 8423 } 8424 8425 #ifdef ENABLE_LE_CENTRAL 8426 /** 8427 * @brief Connect with Whitelist 8428 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8429 * @return - if ok 8430 */ 8431 uint8_t gap_connect_with_whitelist(void){ 8432 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8433 return ERROR_CODE_COMMAND_DISALLOWED; 8434 } 8435 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8436 hci_run(); 8437 return ERROR_CODE_SUCCESS; 8438 } 8439 8440 /** 8441 * @brief Auto Connection Establishment - Start Connecting to device 8442 * @param address_typ 8443 * @param address 8444 * @return 0 if ok 8445 */ 8446 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8447 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8448 return ERROR_CODE_COMMAND_DISALLOWED; 8449 } 8450 8451 uint8_t status = hci_whitelist_add(address_type, address); 8452 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8453 return status; 8454 } 8455 8456 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8457 8458 hci_run(); 8459 return ERROR_CODE_SUCCESS; 8460 } 8461 8462 /** 8463 * @brief Auto Connection Establishment - Stop Connecting to device 8464 * @param address_typ 8465 * @param address 8466 * @return 0 if ok 8467 */ 8468 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8469 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8470 return ERROR_CODE_COMMAND_DISALLOWED; 8471 } 8472 8473 hci_whitelist_remove(address_type, address); 8474 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8475 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8476 } 8477 hci_run(); 8478 return 0; 8479 } 8480 8481 /** 8482 * @brief Auto Connection Establishment - Stop everything 8483 * @note Convenience function to stop all active auto connection attempts 8484 */ 8485 uint8_t gap_auto_connection_stop_all(void){ 8486 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8487 return ERROR_CODE_COMMAND_DISALLOWED; 8488 } 8489 hci_whitelist_clear(); 8490 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8491 hci_run(); 8492 return ERROR_CODE_SUCCESS; 8493 } 8494 8495 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8496 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8497 if (!conn) return 0; 8498 return conn->le_connection_interval; 8499 } 8500 #endif 8501 #endif 8502 8503 #ifdef ENABLE_CLASSIC 8504 /** 8505 * @brief Set Extended Inquiry Response data 8506 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8507 * @note has to be done before stack starts up 8508 */ 8509 void gap_set_extended_inquiry_response(const uint8_t * data){ 8510 hci_stack->eir_data = data; 8511 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8512 hci_run(); 8513 } 8514 8515 /** 8516 * @brief Start GAP Classic Inquiry 8517 * @param duration in 1.28s units 8518 * @return 0 if ok 8519 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8520 */ 8521 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8522 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8523 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8524 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8525 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8526 } 8527 hci_stack->inquiry_state = duration_in_1280ms_units; 8528 hci_stack->inquiry_max_period_length = 0; 8529 hci_stack->inquiry_min_period_length = 0; 8530 hci_run(); 8531 return 0; 8532 } 8533 8534 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8535 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8536 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8537 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8538 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8539 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8540 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8541 8542 hci_stack->inquiry_state = duration; 8543 hci_stack->inquiry_max_period_length = max_period_length; 8544 hci_stack->inquiry_min_period_length = min_period_length; 8545 hci_run(); 8546 return 0; 8547 } 8548 8549 /** 8550 * @brief Stop GAP Classic Inquiry 8551 * @return 0 if ok 8552 */ 8553 int gap_inquiry_stop(void){ 8554 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8555 // emit inquiry complete event, before it even started 8556 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8557 hci_emit_event(event, sizeof(event), 1); 8558 return 0; 8559 } 8560 switch (hci_stack->inquiry_state){ 8561 case GAP_INQUIRY_STATE_ACTIVE: 8562 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8563 hci_run(); 8564 return ERROR_CODE_SUCCESS; 8565 case GAP_INQUIRY_STATE_PERIODIC: 8566 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8567 hci_run(); 8568 return ERROR_CODE_SUCCESS; 8569 default: 8570 return ERROR_CODE_COMMAND_DISALLOWED; 8571 } 8572 } 8573 8574 void gap_inquiry_set_lap(uint32_t lap){ 8575 hci_stack->inquiry_lap = lap; 8576 } 8577 8578 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8579 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8580 hci_stack->inquiry_scan_window = inquiry_scan_window; 8581 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8582 hci_run(); 8583 } 8584 8585 8586 /** 8587 * @brief Remote Name Request 8588 * @param addr 8589 * @param page_scan_repetition_mode 8590 * @param clock_offset only used when bit 15 is set 8591 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8592 */ 8593 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8594 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8595 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8596 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8597 hci_stack->remote_name_clock_offset = clock_offset; 8598 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8599 hci_run(); 8600 return 0; 8601 } 8602 8603 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8604 hci_stack->gap_pairing_state = state; 8605 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8606 hci_run(); 8607 return 0; 8608 } 8609 8610 /** 8611 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8612 * @param addr 8613 * @param pin_data 8614 * @param pin_len 8615 * @return 0 if ok 8616 */ 8617 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8618 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8619 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8620 hci_stack->gap_pairing_pin_len = pin_len; 8621 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8622 } 8623 8624 /** 8625 * @brief Legacy Pairing Pin Code Response 8626 * @param addr 8627 * @param pin 8628 * @return 0 if ok 8629 */ 8630 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8631 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8632 } 8633 8634 /** 8635 * @brief Abort Legacy Pairing 8636 * @param addr 8637 * @param pin 8638 * @return 0 if ok 8639 */ 8640 int gap_pin_code_negative(bd_addr_t addr){ 8641 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8642 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8643 } 8644 8645 /** 8646 * @brief SSP Passkey Response 8647 * @param addr 8648 * @param passkey 8649 * @return 0 if ok 8650 */ 8651 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8652 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8653 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8654 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8655 } 8656 8657 /** 8658 * @brief Abort SSP Passkey Entry/Pairing 8659 * @param addr 8660 * @param pin 8661 * @return 0 if ok 8662 */ 8663 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8664 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8665 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8666 } 8667 8668 /** 8669 * @brief Accept SSP Numeric Comparison 8670 * @param addr 8671 * @param passkey 8672 * @return 0 if ok 8673 */ 8674 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8675 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8676 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8677 } 8678 8679 /** 8680 * @brief Abort SSP Numeric Comparison/Pairing 8681 * @param addr 8682 * @param pin 8683 * @return 0 if ok 8684 */ 8685 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8686 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8687 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8688 } 8689 8690 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8691 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8692 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8693 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8694 connectionSetAuthenticationFlags(conn, flag); 8695 hci_run(); 8696 return ERROR_CODE_SUCCESS; 8697 } 8698 #endif 8699 8700 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8701 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8702 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8703 } 8704 8705 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8706 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8707 } 8708 #endif 8709 8710 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8711 /** 8712 * @brief Report Remote OOB Data 8713 * @param bd_addr 8714 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8715 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8716 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8717 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8718 */ 8719 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){ 8720 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8721 if (connection == NULL) { 8722 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8723 } 8724 connection->classic_oob_c_192 = c_192; 8725 connection->classic_oob_r_192 = r_192; 8726 8727 // ignore P-256 if not supported by us 8728 if (hci_stack->secure_connections_active){ 8729 connection->classic_oob_c_256 = c_256; 8730 connection->classic_oob_r_256 = r_256; 8731 } 8732 8733 return ERROR_CODE_SUCCESS; 8734 } 8735 /** 8736 * @brief Generate new OOB data 8737 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 8738 */ 8739 void gap_ssp_generate_oob_data(void){ 8740 hci_stack->classic_read_local_oob_data = true; 8741 hci_run(); 8742 } 8743 8744 #endif 8745 8746 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 8747 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 8748 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8749 if (connection == NULL) { 8750 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8751 } 8752 8753 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 8754 connection->link_key_type = type; 8755 8756 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 8757 } 8758 8759 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 8760 /** 8761 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 8762 * @param inquiry_mode see bluetooth_defines.h 8763 */ 8764 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 8765 hci_stack->inquiry_mode = inquiry_mode; 8766 } 8767 8768 /** 8769 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 8770 */ 8771 void hci_set_sco_voice_setting(uint16_t voice_setting){ 8772 hci_stack->sco_voice_setting = voice_setting; 8773 } 8774 8775 /** 8776 * @brief Get SCO Voice Setting 8777 * @return current voice setting 8778 */ 8779 uint16_t hci_get_sco_voice_setting(void){ 8780 return hci_stack->sco_voice_setting; 8781 } 8782 8783 static int hci_have_usb_transport(void){ 8784 if (!hci_stack->hci_transport) return 0; 8785 const char * transport_name = hci_stack->hci_transport->name; 8786 if (!transport_name) return 0; 8787 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 8788 } 8789 8790 /** @brief Get SCO packet length for current SCO Voice setting 8791 * @note Using SCO packets of the exact length is required for USB transfer 8792 * @return Length of SCO packets in bytes (not audio frames) 8793 */ 8794 uint16_t hci_get_sco_packet_length(void){ 8795 uint16_t sco_packet_length = 0; 8796 8797 #ifdef ENABLE_SCO_OVER_HCI 8798 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8799 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8800 8801 if (hci_have_usb_transport()){ 8802 // see Core Spec for H2 USB Transfer. 8803 // 3 byte SCO header + 24 bytes per connection 8804 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 8805 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 8806 } else { 8807 // 3 byte SCO header + SCO packet size over the air (60 bytes) 8808 sco_packet_length = 3 + 60 * multiplier; 8809 // assert that it still fits inside an SCO buffer 8810 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 8811 sco_packet_length = 3 + 60; 8812 } 8813 } 8814 #endif 8815 8816 #ifdef HAVE_SCO_TRANSPORT 8817 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8818 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8819 sco_packet_length = 3 + 60 * multiplier; 8820 #endif 8821 return sco_packet_length; 8822 } 8823 8824 /** 8825 * @brief Sets the master/slave policy 8826 * @param policy (0: attempt to become master, 1: let connecting device decide) 8827 */ 8828 void hci_set_master_slave_policy(uint8_t policy){ 8829 hci_stack->master_slave_policy = policy; 8830 } 8831 8832 #endif 8833 8834 HCI_STATE hci_get_state(void){ 8835 return hci_stack->state; 8836 } 8837 8838 #ifdef ENABLE_CLASSIC 8839 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 8840 hci_stack->gap_classic_accept_callback = accept_callback; 8841 } 8842 #endif 8843 8844 /** 8845 * @brief Set callback for Bluetooth Hardware Error 8846 */ 8847 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 8848 hci_stack->hardware_error_callback = fn; 8849 } 8850 8851 void hci_disconnect_all(void){ 8852 btstack_linked_list_iterator_t it; 8853 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8854 while (btstack_linked_list_iterator_has_next(&it)){ 8855 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8856 if (con->state == SENT_DISCONNECT) continue; 8857 con->state = SEND_DISCONNECT; 8858 } 8859 hci_run(); 8860 } 8861 8862 uint16_t hci_get_manufacturer(void){ 8863 return hci_stack->manufacturer; 8864 } 8865 8866 #ifdef ENABLE_BLE 8867 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 8868 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 8869 if (!hci_con) return NULL; 8870 return &hci_con->sm_connection; 8871 } 8872 8873 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 8874 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 8875 #endif 8876 8877 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 8878 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8879 if (hci_connection == NULL) return 0; 8880 if (hci_is_le_connection(hci_connection)){ 8881 #ifdef ENABLE_BLE 8882 sm_connection_t * sm_conn = &hci_connection->sm_connection; 8883 if (sm_conn->sm_connection_encrypted) { 8884 return sm_conn->sm_actual_encryption_key_size; 8885 } 8886 #endif 8887 } else { 8888 #ifdef ENABLE_CLASSIC 8889 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 8890 return hci_connection->encryption_key_size; 8891 } 8892 #endif 8893 } 8894 return 0; 8895 } 8896 8897 bool gap_authenticated(hci_con_handle_t con_handle){ 8898 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8899 if (hci_connection == NULL) return false; 8900 8901 switch (hci_connection->address_type){ 8902 #ifdef ENABLE_BLE 8903 case BD_ADDR_TYPE_LE_PUBLIC: 8904 case BD_ADDR_TYPE_LE_RANDOM: 8905 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 8906 return hci_connection->sm_connection.sm_connection_authenticated != 0; 8907 #endif 8908 #ifdef ENABLE_CLASSIC 8909 case BD_ADDR_TYPE_SCO: 8910 case BD_ADDR_TYPE_ACL: 8911 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 8912 #endif 8913 default: 8914 return false; 8915 } 8916 } 8917 8918 bool gap_secure_connection(hci_con_handle_t con_handle){ 8919 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8920 if (hci_connection == NULL) return 0; 8921 8922 switch (hci_connection->address_type){ 8923 #ifdef ENABLE_BLE 8924 case BD_ADDR_TYPE_LE_PUBLIC: 8925 case BD_ADDR_TYPE_LE_RANDOM: 8926 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 8927 return hci_connection->sm_connection.sm_connection_sc != 0; 8928 #endif 8929 #ifdef ENABLE_CLASSIC 8930 case BD_ADDR_TYPE_SCO: 8931 case BD_ADDR_TYPE_ACL: 8932 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 8933 #endif 8934 default: 8935 return false; 8936 } 8937 } 8938 8939 bool gap_bonded(hci_con_handle_t con_handle){ 8940 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8941 if (hci_connection == NULL) return 0; 8942 8943 #ifdef ENABLE_CLASSIC 8944 link_key_t link_key; 8945 link_key_type_t link_key_type; 8946 #endif 8947 switch (hci_connection->address_type){ 8948 #ifdef ENABLE_BLE 8949 case BD_ADDR_TYPE_LE_PUBLIC: 8950 case BD_ADDR_TYPE_LE_RANDOM: 8951 return hci_connection->sm_connection.sm_le_db_index >= 0; 8952 #endif 8953 #ifdef ENABLE_CLASSIC 8954 case BD_ADDR_TYPE_SCO: 8955 case BD_ADDR_TYPE_ACL: 8956 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 8957 #endif 8958 default: 8959 return false; 8960 } 8961 } 8962 8963 #ifdef ENABLE_BLE 8964 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 8965 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 8966 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 8967 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 8968 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 8969 return sm_conn->sm_connection_authorization_state; 8970 } 8971 #endif 8972 8973 #ifdef ENABLE_CLASSIC 8974 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){ 8975 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8976 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8977 conn->sniff_min_interval = sniff_min_interval; 8978 conn->sniff_max_interval = sniff_max_interval; 8979 conn->sniff_attempt = sniff_attempt; 8980 conn->sniff_timeout = sniff_timeout; 8981 hci_run(); 8982 return 0; 8983 } 8984 8985 /** 8986 * @brief Exit Sniff mode 8987 * @param con_handle 8988 @ @return 0 if ok 8989 */ 8990 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 8991 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8992 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8993 conn->sniff_min_interval = 0xffff; 8994 hci_run(); 8995 return 0; 8996 } 8997 8998 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){ 8999 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9000 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9001 conn->sniff_subrating_max_latency = max_latency; 9002 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9003 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9004 hci_run(); 9005 return ERROR_CODE_SUCCESS; 9006 } 9007 9008 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){ 9009 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9010 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9011 conn->qos_service_type = service_type; 9012 conn->qos_token_rate = token_rate; 9013 conn->qos_peak_bandwidth = peak_bandwidth; 9014 conn->qos_latency = latency; 9015 conn->qos_delay_variation = delay_variation; 9016 hci_run(); 9017 return ERROR_CODE_SUCCESS; 9018 } 9019 9020 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9021 hci_stack->new_page_scan_interval = page_scan_interval; 9022 hci_stack->new_page_scan_window = page_scan_window; 9023 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9024 hci_run(); 9025 } 9026 9027 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9028 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9029 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9030 hci_run(); 9031 } 9032 9033 void gap_set_page_timeout(uint16_t page_timeout){ 9034 hci_stack->page_timeout = page_timeout; 9035 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9036 hci_run(); 9037 } 9038 9039 #endif 9040 9041 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9042 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9043 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9044 if (le_device_db_index >= le_device_db_max_count()) return; 9045 uint8_t offset = le_device_db_index >> 3; 9046 uint8_t mask = 1 << (le_device_db_index & 7); 9047 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9048 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9049 // note: go back to remove entries, otherwise, a remove + add will skip the add 9050 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 9051 } 9052 } 9053 9054 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9055 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9056 if (le_device_db_index >= le_device_db_max_count()) return; 9057 uint8_t offset = le_device_db_index >> 3; 9058 uint8_t mask = 1 << (le_device_db_index & 7); 9059 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9060 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9061 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 9062 } 9063 } 9064 9065 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9066 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9067 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9068 } 9069 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9070 // restart le resolving list update 9071 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9072 } 9073 return ERROR_CODE_SUCCESS; 9074 } 9075 #endif 9076 9077 #ifdef ENABLE_BLE 9078 #ifdef ENABLE_LE_CENTRAL 9079 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9080 9081 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9082 // check if already in list 9083 btstack_linked_list_iterator_t it; 9084 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9085 while (btstack_linked_list_iterator_has_next(&it)) { 9086 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9087 if (entry->sid != advertising_sid) { 9088 continue; 9089 } 9090 if (entry->address_type != address_type) { 9091 continue; 9092 } 9093 if (memcmp(entry->address, address, 6) != 0) { 9094 continue; 9095 } 9096 // disallow if already scheduled to add 9097 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9098 return ERROR_CODE_COMMAND_DISALLOWED; 9099 } 9100 // still on controller, but scheduled to remove -> re-add 9101 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9102 return ERROR_CODE_SUCCESS; 9103 } 9104 // alloc and add to list 9105 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9106 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9107 entry->sid = advertising_sid; 9108 entry->address_type = address_type; 9109 (void)memcpy(entry->address, address, 6); 9110 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9111 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9112 return ERROR_CODE_SUCCESS; 9113 } 9114 9115 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9116 btstack_linked_list_iterator_t it; 9117 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9118 while (btstack_linked_list_iterator_has_next(&it)){ 9119 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9120 if (entry->sid != advertising_sid) { 9121 continue; 9122 } 9123 if (entry->address_type != address_type) { 9124 continue; 9125 } 9126 if (memcmp(entry->address, address, 6) != 0) { 9127 continue; 9128 } 9129 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9130 // remove from controller if already present 9131 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9132 } else { 9133 // directly remove entry from whitelist 9134 btstack_linked_list_iterator_remove(&it); 9135 btstack_memory_periodic_advertiser_list_entry_free(entry); 9136 } 9137 return ERROR_CODE_SUCCESS; 9138 } 9139 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9140 } 9141 9142 static void hci_periodic_advertiser_list_clear(void){ 9143 btstack_linked_list_iterator_t it; 9144 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9145 while (btstack_linked_list_iterator_has_next(&it)){ 9146 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9147 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9148 // remove from controller if already present 9149 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9150 continue; 9151 } 9152 // directly remove entry from whitelist 9153 btstack_linked_list_iterator_remove(&it); 9154 btstack_memory_periodic_advertiser_list_entry_free(entry); 9155 } 9156 } 9157 9158 // free all entries unconditionally 9159 static void hci_periodic_advertiser_list_free(void){ 9160 btstack_linked_list_iterator_t lit; 9161 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 9162 while (btstack_linked_list_iterator_has_next(&lit)){ 9163 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 9164 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 9165 btstack_memory_periodic_advertiser_list_entry_free(entry); 9166 } 9167 } 9168 9169 uint8_t gap_periodic_advertiser_list_clear(void){ 9170 hci_periodic_advertiser_list_clear(); 9171 hci_run(); 9172 return ERROR_CODE_SUCCESS; 9173 } 9174 9175 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9176 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9177 if (status){ 9178 return status; 9179 } 9180 hci_run(); 9181 return ERROR_CODE_SUCCESS; 9182 } 9183 9184 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9185 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9186 if (status){ 9187 return status; 9188 } 9189 hci_run(); 9190 return ERROR_CODE_SUCCESS; 9191 } 9192 9193 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9194 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9195 // abort if already active 9196 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9197 return ERROR_CODE_COMMAND_DISALLOWED; 9198 } 9199 // store request 9200 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9201 hci_stack->le_periodic_sync_options = options; 9202 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9203 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9204 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9205 hci_stack->le_periodic_sync_skip = skip; 9206 hci_stack->le_periodic_sync_timeout = sync_timeout; 9207 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9208 9209 hci_run(); 9210 return ERROR_CODE_SUCCESS; 9211 } 9212 9213 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9214 // abort if not requested 9215 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9216 return ERROR_CODE_COMMAND_DISALLOWED; 9217 } 9218 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9219 hci_run(); 9220 return ERROR_CODE_SUCCESS; 9221 } 9222 9223 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9224 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9225 return ERROR_CODE_COMMAND_DISALLOWED; 9226 } 9227 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9228 hci_run(); 9229 return ERROR_CODE_SUCCESS; 9230 } 9231 9232 #endif 9233 #endif 9234 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9235 static uint8_t hci_iso_stream_create(hci_iso_type_t iso_type, hci_con_handle_t con_handle, uint8_t group_id, 9236 hci_iso_stream_state_t state) { 9237 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9238 if (iso_stream == NULL){ 9239 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 9240 } else { 9241 iso_stream->iso_type = iso_type; 9242 iso_stream->state = state; 9243 iso_stream->con_handle = con_handle; 9244 iso_stream->group_id = group_id; 9245 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9246 return ERROR_CODE_SUCCESS; 9247 } 9248 } 9249 9250 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9251 btstack_linked_list_iterator_t it; 9252 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9253 while (btstack_linked_list_iterator_has_next(&it)){ 9254 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9255 if (iso_stream->con_handle == con_handle ) { 9256 return iso_stream; 9257 } 9258 } 9259 return NULL; 9260 } 9261 9262 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9263 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->con_handle, iso_stream->group_id); 9264 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9265 btstack_memory_hci_iso_stream_free(iso_stream); 9266 } 9267 9268 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9269 btstack_linked_list_iterator_t it; 9270 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9271 while (btstack_linked_list_iterator_has_next(&it)){ 9272 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9273 if ((iso_stream->group_id == group_id) && 9274 (iso_stream->iso_type == iso_type)){ 9275 btstack_linked_list_iterator_remove(&it); 9276 btstack_memory_hci_iso_stream_free(iso_stream); 9277 } 9278 } 9279 } 9280 9281 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9282 btstack_linked_list_iterator_t it; 9283 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9284 while (btstack_linked_list_iterator_has_next(&it)){ 9285 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9286 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9287 (iso_stream->group_id == group_id)){ 9288 btstack_linked_list_iterator_remove(&it); 9289 btstack_memory_hci_iso_stream_free(iso_stream); 9290 } 9291 } 9292 } 9293 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9294 btstack_linked_list_iterator_t it; 9295 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9296 while (btstack_linked_list_iterator_has_next(&it)){ 9297 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9298 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9299 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9300 } 9301 } 9302 } 9303 9304 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9305 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9306 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9307 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9308 return (sdu_len_offset + 2 + sdu_len) == size; 9309 } 9310 9311 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9312 if (hci_stack->iso_packet_handler == NULL) { 9313 return; 9314 } 9315 if (size < 4) { 9316 return; 9317 } 9318 9319 // parse header 9320 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9321 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9322 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9323 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9324 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9325 9326 // assert packet is complete 9327 if ((iso_data_len + 4u) != size){ 9328 return; 9329 } 9330 9331 if ((pb_flag & 0x01) == 0){ 9332 if (pb_flag == 0x02){ 9333 // The ISO_Data_Load field contains a header and a complete SDU. 9334 if (hci_iso_sdu_complete(packet, size)) { 9335 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9336 } 9337 } else { 9338 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9339 if (iso_stream == NULL){ 9340 return; 9341 } 9342 if (size > HCI_ISO_PAYLOAD_SIZE){ 9343 return; 9344 } 9345 memcpy(iso_stream->reassembly_buffer, packet, size); 9346 // fix pb_flag 9347 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9348 iso_stream->reassembly_pos = size; 9349 } 9350 } else { 9351 // iso_data_load contains continuation or last fragment of an SDU 9352 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9353 if (ts_flag != 0){ 9354 return; 9355 } 9356 // append fragment 9357 if (iso_stream == NULL){ 9358 return; 9359 } 9360 if (iso_stream->reassembly_pos == 0){ 9361 return; 9362 } 9363 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9364 // reset reassembly buffer 9365 iso_stream->reassembly_pos = 0; 9366 return; 9367 } 9368 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9369 iso_stream->reassembly_pos += iso_data_len; 9370 9371 // deliver if last fragment and SDU complete 9372 if (pb_flag == 0x03){ 9373 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9374 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9375 } 9376 iso_stream->reassembly_pos = 0; 9377 } 9378 } 9379 } 9380 9381 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9382 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9383 uint16_t pos = 0; 9384 event[pos++] = HCI_EVENT_META_GAP; 9385 event[pos++] = 4 + (2 * big->num_bis); 9386 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9387 event[pos++] = status; 9388 event[pos++] = big->big_handle; 9389 event[pos++] = big->num_bis; 9390 uint8_t i; 9391 for (i=0;i<big->num_bis;i++){ 9392 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9393 pos += 2; 9394 } 9395 hci_emit_event(event, pos, 0); 9396 } 9397 9398 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9399 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9400 uint16_t pos = 0; 9401 event[pos++] = HCI_EVENT_META_GAP; 9402 event[pos++] = 4 + (2 * cig->num_cis); 9403 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9404 event[pos++] = status; 9405 event[pos++] = cig->cig_id; 9406 event[pos++] = cig->num_cis; 9407 uint8_t i; 9408 for (i=0;i<cig->num_cis;i++){ 9409 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9410 pos += 2; 9411 } 9412 hci_emit_event(event, pos, 0); 9413 } 9414 9415 static void 9416 hci_emit_cis_created(uint8_t cig_id, hci_con_handle_t cis_con_handle, uint8_t status) { 9417 uint8_t event [7]; 9418 uint16_t pos = 0; 9419 event[pos++] = HCI_EVENT_META_GAP; 9420 event[pos++] = 5; 9421 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9422 event[pos++] = status; 9423 event[pos++] = cig_id; 9424 little_endian_store_16(event, pos, cis_con_handle); 9425 pos += 2; 9426 hci_emit_event(event, pos, 0); 9427 } 9428 9429 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9430 uint8_t event [4]; 9431 uint16_t pos = 0; 9432 event[pos++] = HCI_EVENT_META_GAP; 9433 event[pos++] = 2; 9434 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9435 event[pos++] = big->big_handle; 9436 hci_emit_event(event, pos, 0); 9437 } 9438 9439 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9440 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9441 uint16_t pos = 0; 9442 event[pos++] = HCI_EVENT_META_GAP; 9443 event[pos++] = 4; 9444 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9445 event[pos++] = status; 9446 event[pos++] = big_sync->big_handle; 9447 event[pos++] = big_sync->num_bis; 9448 uint8_t i; 9449 for (i=0;i<big_sync->num_bis;i++){ 9450 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9451 pos += 2; 9452 } 9453 hci_emit_event(event, pos, 0); 9454 } 9455 9456 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9457 uint8_t event [4]; 9458 uint16_t pos = 0; 9459 event[pos++] = HCI_EVENT_META_GAP; 9460 event[pos++] = 2; 9461 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9462 event[pos++] = big_handle; 9463 hci_emit_event(event, pos, 0); 9464 } 9465 9466 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9467 uint8_t event[6]; 9468 uint16_t pos = 0; 9469 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9470 event[pos++] = sizeof(event) - 2; 9471 event[pos++] = big->big_handle; 9472 event[pos++] = bis_index; 9473 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9474 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9475 } 9476 9477 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9478 uint8_t event[4]; 9479 uint16_t pos = 0; 9480 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9481 event[pos++] = sizeof(event) - 2; 9482 little_endian_store_16(event, pos, cis_con_handle); 9483 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9484 } 9485 9486 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9487 btstack_linked_list_iterator_t it; 9488 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9489 while (btstack_linked_list_iterator_has_next(&it)){ 9490 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9491 if ( big->big_handle == big_handle ) { 9492 return big; 9493 } 9494 } 9495 return NULL; 9496 } 9497 9498 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9499 btstack_linked_list_iterator_t it; 9500 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9501 while (btstack_linked_list_iterator_has_next(&it)){ 9502 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9503 if ( big_sync->big_handle == big_handle ) { 9504 return big_sync; 9505 } 9506 } 9507 return NULL; 9508 } 9509 9510 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9511 hci_stack->iso_packets_to_queue = num_packets; 9512 } 9513 9514 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9515 btstack_linked_list_iterator_t it; 9516 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9517 while (btstack_linked_list_iterator_has_next(&it)){ 9518 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9519 if ( cig->cig_id == cig_id ) { 9520 return cig; 9521 } 9522 } 9523 return NULL; 9524 } 9525 9526 static void hci_iso_notify_can_send_now(void){ 9527 9528 // BIG 9529 9530 btstack_linked_list_iterator_t it; 9531 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9532 while (btstack_linked_list_iterator_has_next(&it)){ 9533 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9534 // track number completed packet timestamps 9535 if (big->num_completed_timestamp_current_valid){ 9536 big->num_completed_timestamp_current_valid = false; 9537 if (big->num_completed_timestamp_previous_valid){ 9538 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9539 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9540 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9541 big->num_completed_timestamp_previous_ms); 9542 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9543 // to catch up, skip packet on all BIS 9544 uint8_t i; 9545 for (i=0;i<big->num_bis;i++){ 9546 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9547 if (iso_stream){ 9548 iso_stream->num_packets_to_skip++; 9549 } 9550 } 9551 } 9552 } 9553 big->num_completed_timestamp_previous_valid = true; 9554 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9555 } 9556 9557 if (big->can_send_now_requested){ 9558 // check if no outgoing iso packets pending and no can send now have to be emitted 9559 uint8_t i; 9560 bool can_send = true; 9561 uint8_t num_iso_queued_minimum = 0; 9562 for (i=0;i<big->num_bis;i++){ 9563 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9564 if (iso_stream == NULL) continue; 9565 // handle case where individual ISO packet was sent too late: 9566 // for each additionally queued packet, a new one needs to get skipped 9567 if (i==0){ 9568 num_iso_queued_minimum = iso_stream->num_packets_sent; 9569 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 9570 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 9571 iso_stream->num_packets_to_skip += num_packets_to_skip; 9572 iso_stream->num_packets_sent -= num_packets_to_skip; 9573 } 9574 // check if we can send now 9575 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 9576 can_send = false; 9577 break; 9578 } 9579 } 9580 if (can_send){ 9581 // propagate can send now to individual streams 9582 big->can_send_now_requested = false; 9583 for (i=0;i<big->num_bis;i++){ 9584 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9585 iso_stream->emit_ready_to_send = true; 9586 } 9587 } 9588 } 9589 } 9590 9591 if (hci_stack->hci_packet_buffer_reserved) return; 9592 9593 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9594 while (btstack_linked_list_iterator_has_next(&it)){ 9595 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9596 // report bis ready 9597 uint8_t i; 9598 for (i=0;i<big->num_bis;i++){ 9599 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9600 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9601 iso_stream->emit_ready_to_send = false; 9602 hci_emit_bis_can_send_now(big, i); 9603 break; 9604 } 9605 } 9606 } 9607 9608 // CIS 9609 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9610 while (btstack_linked_list_iterator_has_next(&it)) { 9611 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9612 if ((iso_stream->can_send_now_requested) && 9613 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 9614 iso_stream->can_send_now_requested = false; 9615 hci_emit_cis_can_send_now(iso_stream->con_handle); 9616 } 9617 } 9618 } 9619 9620 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9621 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9622 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9623 } 9624 if (big_params->num_bis == 0){ 9625 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9626 } 9627 if (big_params->num_bis > MAX_NR_BIS){ 9628 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9629 } 9630 9631 // reserve ISO Streams 9632 uint8_t i; 9633 uint8_t status = ERROR_CODE_SUCCESS; 9634 for (i=0;i<big_params->num_bis;i++){ 9635 status = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_CON_HANDLE_INVALID, big_params->big_handle, 9636 HCI_ISO_STREAM_STATE_REQUESTED); 9637 if (status != ERROR_CODE_SUCCESS) { 9638 break; 9639 } 9640 } 9641 9642 // free structs on error 9643 if (status != ERROR_CODE_SUCCESS){ 9644 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 9645 return status; 9646 } 9647 9648 le_audio_big_t * big = storage; 9649 big->big_handle = big_params->big_handle; 9650 big->params = big_params; 9651 big->state = LE_AUDIO_BIG_STATE_CREATE; 9652 big->num_bis = big_params->num_bis; 9653 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9654 9655 hci_run(); 9656 9657 return ERROR_CODE_SUCCESS; 9658 } 9659 9660 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9661 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9662 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9663 } 9664 if (big_sync_params->num_bis == 0){ 9665 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9666 } 9667 if (big_sync_params->num_bis > MAX_NR_BIS){ 9668 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9669 } 9670 9671 le_audio_big_sync_t * big_sync = storage; 9672 big_sync->big_handle = big_sync_params->big_handle; 9673 big_sync->params = big_sync_params; 9674 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9675 big_sync->num_bis = big_sync_params->num_bis; 9676 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9677 9678 hci_run(); 9679 9680 return ERROR_CODE_SUCCESS; 9681 } 9682 9683 uint8_t gap_big_terminate(uint8_t big_handle){ 9684 le_audio_big_t * big = hci_big_for_handle(big_handle); 9685 if (big == NULL){ 9686 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9687 } 9688 switch (big->state){ 9689 case LE_AUDIO_BIG_STATE_CREATE: 9690 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9691 hci_emit_big_terminated(big); 9692 break; 9693 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9694 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9695 break; 9696 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9697 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9698 case LE_AUDIO_BIG_STATE_ACTIVE: 9699 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9700 hci_run(); 9701 break; 9702 default: 9703 return ERROR_CODE_COMMAND_DISALLOWED; 9704 } 9705 return ERROR_CODE_SUCCESS; 9706 } 9707 9708 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9709 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9710 if (big_sync == NULL){ 9711 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9712 } 9713 switch (big_sync->state){ 9714 case LE_AUDIO_BIG_STATE_CREATE: 9715 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9716 hci_emit_big_sync_stopped(big_handle); 9717 break; 9718 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9719 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9720 break; 9721 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9722 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9723 case LE_AUDIO_BIG_STATE_ACTIVE: 9724 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 9725 hci_run(); 9726 break; 9727 default: 9728 return ERROR_CODE_COMMAND_DISALLOWED; 9729 } 9730 return ERROR_CODE_SUCCESS; 9731 } 9732 9733 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 9734 le_audio_big_t * big = hci_big_for_handle(big_handle); 9735 if (big == NULL){ 9736 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9737 } 9738 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 9739 return ERROR_CODE_COMMAND_DISALLOWED; 9740 } 9741 big->can_send_now_requested = true; 9742 hci_iso_notify_can_send_now(); 9743 return ERROR_CODE_SUCCESS; 9744 } 9745 9746 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 9747 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 9748 if (iso_stream == NULL){ 9749 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9750 } 9751 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 9752 return ERROR_CODE_COMMAND_DISALLOWED; 9753 } 9754 iso_stream->can_send_now_requested = true; 9755 hci_iso_notify_can_send_now(); 9756 return ERROR_CODE_SUCCESS; 9757 } 9758 9759 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 9760 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 9761 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9762 } 9763 if (cig_params->num_cis == 0){ 9764 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9765 } 9766 if (cig_params->num_cis > MAX_NR_BIS){ 9767 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9768 } 9769 9770 // reserve ISO Streams 9771 uint8_t i; 9772 uint8_t status = ERROR_CODE_SUCCESS; 9773 for (i=0;i<cig_params->num_cis;i++){ 9774 status = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_CON_HANDLE_INVALID, cig_params->cig_id, 9775 HCI_ISO_STREAM_STATE_REQUESTED); 9776 if (status != ERROR_CODE_SUCCESS) { 9777 break; 9778 } 9779 } 9780 9781 // free structs on error 9782 if (status != ERROR_CODE_SUCCESS){ 9783 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 9784 return status; 9785 } 9786 9787 le_audio_cig_t * cig = storage; 9788 cig->cig_id = cig_params->cig_id; 9789 cig->num_cis = cig_params->num_cis; 9790 cig->params = cig_params; 9791 cig->state = LE_AUDIO_CIG_STATE_CREATE; 9792 for (i=0;i<cig->num_cis;i++){ 9793 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 9794 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 9795 } 9796 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 9797 9798 hci_run(); 9799 9800 return ERROR_CODE_SUCCESS; 9801 } 9802 9803 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 9804 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 9805 if (cig == NULL){ 9806 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9807 } 9808 9809 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 9810 return ERROR_CODE_COMMAND_DISALLOWED; 9811 } 9812 9813 // store ACL Connection Handles 9814 uint8_t i; 9815 for (i=0;i<cig->num_cis;i++){ 9816 // check that all con handles exit 9817 hci_con_handle_t cis_handle = cis_con_handles[i]; 9818 uint8_t j; 9819 bool found = false; 9820 for (j=0;j<cig->num_cis;j++){ 9821 if (cig->cis_con_handles[j] == cis_handle){ 9822 cig->acl_con_handles[j] = acl_con_handles[j]; 9823 found = true; 9824 break; 9825 } 9826 } 9827 if (!found){ 9828 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9829 } 9830 } 9831 9832 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 9833 hci_run(); 9834 9835 return ERROR_CODE_SUCCESS; 9836 } 9837 9838 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_con_handle, hci_iso_stream_state_t state){ 9839 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 9840 if (iso_stream != NULL){ 9841 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9842 } 9843 9844 uint8_t status = hci_iso_stream_create(HCI_ISO_TYPE_CIS, cis_con_handle, 9845 HCI_ISO_GROUP_ID_INVALID, state); 9846 if (status == ERROR_CODE_SUCCESS){ 9847 return status; 9848 } 9849 9850 hci_run(); 9851 return ERROR_CODE_SUCCESS; 9852 } 9853 9854 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 9855 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 9856 } 9857 9858 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 9859 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 9860 } 9861 9862 9863 #endif 9864 #endif /* ENABLE_BLE */ 9865 9866 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 9867 void hci_setup_test_connections_fuzz(void){ 9868 hci_connection_t * conn; 9869 9870 // default address: 66:55:44:33:00:01 9871 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 9872 9873 // setup Controller info 9874 hci_stack->num_cmd_packets = 255; 9875 hci_stack->acl_packets_total_num = 255; 9876 9877 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 9878 addr[5] = 0x01; 9879 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9880 conn->con_handle = addr[5]; 9881 conn->role = HCI_ROLE_SLAVE; 9882 conn->state = RECEIVED_CONNECTION_REQUEST; 9883 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9884 9885 // setup incoming Classic SCO connection with con handle 0x0002 9886 addr[5] = 0x02; 9887 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9888 conn->con_handle = addr[5]; 9889 conn->role = HCI_ROLE_SLAVE; 9890 conn->state = RECEIVED_CONNECTION_REQUEST; 9891 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9892 9893 // setup ready Classic ACL connection with con handle 0x0003 9894 addr[5] = 0x03; 9895 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9896 conn->con_handle = addr[5]; 9897 conn->role = HCI_ROLE_SLAVE; 9898 conn->state = OPEN; 9899 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9900 9901 // setup ready Classic SCO connection with con handle 0x0004 9902 addr[5] = 0x04; 9903 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9904 conn->con_handle = addr[5]; 9905 conn->role = HCI_ROLE_SLAVE; 9906 conn->state = OPEN; 9907 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9908 9909 // setup ready LE ACL connection with con handle 0x005 and public address 9910 addr[5] = 0x05; 9911 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 9912 conn->con_handle = addr[5]; 9913 conn->role = HCI_ROLE_SLAVE; 9914 conn->state = OPEN; 9915 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9916 conn->sm_connection.sm_connection_encrypted = 1; 9917 } 9918 9919 void hci_free_connections_fuzz(void){ 9920 btstack_linked_list_iterator_t it; 9921 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9922 while (btstack_linked_list_iterator_has_next(&it)){ 9923 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9924 btstack_linked_list_iterator_remove(&it); 9925 btstack_memory_hci_connection_free(con); 9926 } 9927 } 9928 void hci_simulate_working_fuzz(void){ 9929 hci_stack->le_scanning_param_update = false; 9930 hci_init_done(); 9931 hci_stack->num_cmd_packets = 255; 9932 } 9933 #endif 9934