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 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 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 ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #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." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 171 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 172 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 173 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 174 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 175 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 176 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 178 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 179 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 180 181 // enumerate supported commands 182 #define X(name, offset, bit) name, 183 enum { 184 SUPPORTED_HCI_COMMANDS 185 SUPPORTED_HCI_COMMANDS_COUNT 186 }; 187 #undef X 188 189 // prototypes 190 #ifdef ENABLE_CLASSIC 191 static void hci_update_scan_enable(void); 192 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 193 static int hci_local_ssp_activated(void); 194 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 195 static bool hci_ssp_supported(hci_connection_t * connection); 196 static void hci_notify_if_sco_can_send_now(void); 197 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 198 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 199 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 200 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 201 static void hci_connection_timestamp(hci_connection_t *connection); 202 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 203 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 204 #endif 205 206 static int hci_power_control_on(void); 207 static void hci_power_control_off(void); 208 static void hci_state_reset(void); 209 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 210 static void hci_emit_transport_packet_sent(void); 211 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 212 static void hci_emit_nr_connections_changed(void); 213 static void hci_emit_hci_open_failed(void); 214 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 215 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 216 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 217 static void hci_run(void); 218 static int hci_is_le_connection(hci_connection_t * connection); 219 220 #ifdef ENABLE_CLASSIC 221 static int hci_have_usb_transport(void); 222 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 223 #endif 224 225 #ifdef ENABLE_BLE 226 #ifdef ENABLE_LE_CENTRAL 227 // called from test/ble_client/advertising_data_parser.c 228 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 229 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 230 static hci_connection_t * gap_get_outgoing_connection(void); 231 static void hci_le_scan_stop(void); 232 static bool hci_run_general_gap_le(void); 233 #endif 234 #ifdef ENABLE_LE_PERIPHERAL 235 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 236 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 237 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 238 #endif /* ENABLE_LE_PERIPHERAL */ 239 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 240 static hci_iso_stream_t * hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id); 241 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 242 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 243 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 244 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 245 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 246 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size); 247 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 248 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 249 static void hci_iso_notify_can_send_now(void); 250 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 251 static void hci_emit_big_terminated(const le_audio_big_t * big); 252 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 253 static void hci_emit_big_sync_stopped(uint8_t big_handle); 254 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 255 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 256 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 257 258 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 259 #endif /* ENABLE_BLE */ 260 261 // the STACK is here 262 #ifndef HAVE_MALLOC 263 static hci_stack_t hci_stack_static; 264 #endif 265 static hci_stack_t * hci_stack = NULL; 266 267 #ifdef ENABLE_CLASSIC 268 // default name 269 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 270 271 // test helper 272 static uint8_t disable_l2cap_timeouts = 0; 273 #endif 274 275 // reset connection state on create and on reconnect 276 // don't overwrite addr, con handle, role 277 static void hci_connection_init(hci_connection_t * conn){ 278 conn->authentication_flags = AUTH_FLAG_NONE; 279 conn->bonding_flags = 0; 280 conn->requested_security_level = LEVEL_0; 281 #ifdef ENABLE_CLASSIC 282 conn->request_role = HCI_ROLE_INVALID; 283 conn->sniff_subrating_max_latency = 0xffff; 284 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 285 conn->link_key_type = INVALID_LINK_KEY; 286 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 287 btstack_run_loop_set_timer_context(&conn->timeout, conn); 288 hci_connection_timestamp(conn); 289 #endif 290 conn->acl_recombination_length = 0; 291 conn->acl_recombination_pos = 0; 292 conn->num_packets_sent = 0; 293 294 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 295 #ifdef ENABLE_BLE 296 conn->le_phy_update_all_phys = 0xff; 297 #endif 298 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 299 conn->le_max_tx_octets = 27; 300 #endif 301 #ifdef ENABLE_CLASSIC_PAIRING_OOB 302 conn->classic_oob_c_192 = NULL; 303 conn->classic_oob_r_192 = NULL; 304 conn->classic_oob_c_256 = NULL; 305 conn->classic_oob_r_256 = NULL; 306 #endif 307 } 308 309 /** 310 * create connection for given address 311 * 312 * @return connection OR NULL, if no memory left 313 */ 314 static hci_connection_t * 315 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 316 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 317 318 hci_connection_t * conn = btstack_memory_hci_connection_get(); 319 if (!conn) return NULL; 320 hci_connection_init(conn); 321 322 bd_addr_copy(conn->address, addr); 323 conn->address_type = addr_type; 324 conn->con_handle = HCI_CON_HANDLE_INVALID; 325 conn->role = role; 326 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 327 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 328 #endif 329 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 330 331 return conn; 332 } 333 334 335 /** 336 * get le connection parameter range 337 * 338 * @return le connection parameter range struct 339 */ 340 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 341 *range = hci_stack->le_connection_parameter_range; 342 } 343 344 /** 345 * set le connection parameter range 346 * 347 */ 348 349 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 350 hci_stack->le_connection_parameter_range = *range; 351 } 352 353 /** 354 * @brief Test if connection parameters are inside in existing rage 355 * @param conn_interval_min (unit: 1.25ms) 356 * @param conn_interval_max (unit: 1.25ms) 357 * @param conn_latency 358 * @param supervision_timeout (unit: 10ms) 359 * @return 1 if included 360 */ 361 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){ 362 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 363 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 364 365 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 366 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 367 368 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 369 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 370 371 return 1; 372 } 373 374 /** 375 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 376 * @note: default: 1 377 * @param max_peripheral_connections 378 */ 379 #ifdef ENABLE_LE_PERIPHERAL 380 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 381 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 382 } 383 #endif 384 385 /** 386 * get hci connections iterator 387 * 388 * @return hci connections iterator 389 */ 390 391 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 392 btstack_linked_list_iterator_init(it, &hci_stack->connections); 393 } 394 395 /** 396 * get connection for a given handle 397 * 398 * @return connection OR NULL, if not found 399 */ 400 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 401 btstack_linked_list_iterator_t it; 402 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 403 while (btstack_linked_list_iterator_has_next(&it)){ 404 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 405 if ( item->con_handle == con_handle ) { 406 return item; 407 } 408 } 409 return NULL; 410 } 411 412 /** 413 * get connection for given address 414 * 415 * @return connection OR NULL, if not found 416 */ 417 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 418 btstack_linked_list_iterator_t it; 419 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 420 while (btstack_linked_list_iterator_has_next(&it)){ 421 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 422 if (connection->address_type != addr_type) continue; 423 if (memcmp(addr, connection->address, 6) != 0) continue; 424 return connection; 425 } 426 return NULL; 427 } 428 429 #ifdef ENABLE_CLASSIC 430 431 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 432 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 433 } 434 435 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 436 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 437 } 438 439 #ifdef ENABLE_SCO_OVER_HCI 440 static int hci_number_sco_connections(void){ 441 int connections = 0; 442 btstack_linked_list_iterator_t it; 443 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 444 while (btstack_linked_list_iterator_has_next(&it)){ 445 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 446 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 447 connections++; 448 } 449 return connections; 450 } 451 #endif 452 453 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 454 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 455 #ifdef HAVE_EMBEDDED_TICK 456 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 457 // connections might be timed out 458 hci_emit_l2cap_check_timeout(connection); 459 } 460 #else 461 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 462 // connections might be timed out 463 hci_emit_l2cap_check_timeout(connection); 464 } 465 #endif 466 } 467 468 static void hci_connection_timestamp(hci_connection_t *connection){ 469 #ifdef HAVE_EMBEDDED_TICK 470 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 471 #else 472 connection->timestamp = btstack_run_loop_get_time_ms(); 473 #endif 474 } 475 476 /** 477 * add authentication flags and reset timer 478 * @note: assumes classic connection 479 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 480 */ 481 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 482 bd_addr_t addr; 483 reverse_bd_addr(bd_addr, addr); 484 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 485 if (conn) { 486 connectionSetAuthenticationFlags(conn, flags); 487 hci_connection_timestamp(conn); 488 } 489 } 490 491 static bool hci_pairing_active(hci_connection_t * hci_connection){ 492 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 493 } 494 495 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 496 if (hci_pairing_active(hci_connection)) return; 497 if (ssp){ 498 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 499 } else { 500 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 501 } 502 // if we are initiator, we have sent an HCI Authenticate Request 503 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 504 505 // if we are responder, use minimal service security level as required level 506 if (!initiator){ 507 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); 508 } 509 510 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 511 512 uint8_t event[12]; 513 event[0] = GAP_EVENT_PAIRING_STARTED; 514 event[1] = 10; 515 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 516 reverse_bd_addr(hci_connection->address, &event[4]); 517 event[10] = (uint8_t) ssp; 518 event[11] = (uint8_t) initiator; 519 hci_emit_event(event, sizeof(event), 1); 520 } 521 522 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 523 hci_connection->requested_security_level = LEVEL_0; 524 if (!hci_pairing_active(hci_connection)) return; 525 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 526 #ifdef ENABLE_CLASSIC_PAIRING_OOB 527 hci_connection->classic_oob_c_192 = NULL; 528 hci_connection->classic_oob_r_192 = NULL; 529 hci_connection->classic_oob_c_256 = NULL; 530 hci_connection->classic_oob_r_256 = NULL; 531 #endif 532 log_info("pairing complete, status %02x", status); 533 534 uint8_t event[11]; 535 event[0] = GAP_EVENT_PAIRING_COMPLETE; 536 event[1] = 9; 537 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 538 reverse_bd_addr(hci_connection->address, &event[4]); 539 event[10] = status; 540 hci_emit_event(event, sizeof(event), 1); 541 542 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 543 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 544 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 545 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 546 hci_connection->bonding_status = status; 547 } 548 } 549 550 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 551 hci_connection_t * conn = hci_connection_for_handle(handle); 552 if (!conn) return false; 553 return hci_pairing_active(conn); 554 } 555 556 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 557 if (!hci_stack->link_key_db) return; 558 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 559 hci_stack->link_key_db->delete_link_key(addr); 560 } 561 562 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 563 if (!hci_stack->link_key_db) return; 564 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 565 hci_stack->link_key_db->put_link_key(addr, link_key, type); 566 } 567 568 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 569 if (!hci_stack->link_key_db) return false; 570 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 571 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 572 return result; 573 } 574 575 void gap_delete_all_link_keys(void){ 576 bd_addr_t addr; 577 link_key_t link_key; 578 link_key_type_t type; 579 btstack_link_key_iterator_t it; 580 int ok = gap_link_key_iterator_init(&it); 581 if (!ok) { 582 log_error("could not initialize iterator"); 583 return; 584 } 585 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 586 gap_drop_link_key_for_bd_addr(addr); 587 } 588 gap_link_key_iterator_done(&it); 589 } 590 591 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 592 if (!hci_stack->link_key_db) return 0; 593 if (!hci_stack->link_key_db->iterator_init) return 0; 594 return hci_stack->link_key_db->iterator_init(it); 595 } 596 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){ 597 if (!hci_stack->link_key_db) return 0; 598 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 599 } 600 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 601 if (!hci_stack->link_key_db) return; 602 hci_stack->link_key_db->iterator_done(it); 603 } 604 #endif 605 606 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 607 switch (address_type){ 608 case BD_ADDR_TYPE_LE_PUBLIC: 609 case BD_ADDR_TYPE_LE_RANDOM: 610 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 611 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 612 return true; 613 default: 614 return false; 615 } 616 } 617 618 static int hci_is_le_connection(hci_connection_t * connection){ 619 return hci_is_le_connection_type(connection->address_type); 620 } 621 622 /** 623 * count connections 624 */ 625 static int nr_hci_connections(void){ 626 int count = 0; 627 btstack_linked_item_t *it; 628 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 629 count++; 630 } 631 return count; 632 } 633 634 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 635 636 unsigned int num_packets_sent_classic = 0; 637 unsigned int num_packets_sent_le = 0; 638 639 btstack_linked_item_t *it; 640 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 641 hci_connection_t * connection = (hci_connection_t *) it; 642 if (hci_is_le_connection(connection)){ 643 num_packets_sent_le += connection->num_packets_sent; 644 } 645 if (connection->address_type == BD_ADDR_TYPE_ACL){ 646 num_packets_sent_classic += connection->num_packets_sent; 647 } 648 } 649 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 650 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 651 int free_slots_le = 0; 652 653 if (free_slots_classic < 0){ 654 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); 655 return 0; 656 } 657 658 if (hci_stack->le_acl_packets_total_num){ 659 // if we have LE slots, they are used 660 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 661 if (free_slots_le < 0){ 662 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); 663 return 0; 664 } 665 } else { 666 // otherwise, classic slots are used for LE, too 667 free_slots_classic -= num_packets_sent_le; 668 if (free_slots_classic < 0){ 669 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); 670 return 0; 671 } 672 } 673 674 switch (address_type){ 675 case BD_ADDR_TYPE_UNKNOWN: 676 log_error("hci_number_free_acl_slots: unknown address type"); 677 return 0; 678 679 case BD_ADDR_TYPE_ACL: 680 return (uint16_t) free_slots_classic; 681 682 default: 683 if (hci_stack->le_acl_packets_total_num > 0){ 684 return (uint16_t) free_slots_le; 685 } 686 return (uint16_t) free_slots_classic; 687 } 688 } 689 690 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 691 // get connection type 692 hci_connection_t * connection = hci_connection_for_handle(con_handle); 693 if (!connection){ 694 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 695 return 0; 696 } 697 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 698 } 699 700 #ifdef ENABLE_CLASSIC 701 static int hci_number_free_sco_slots(void){ 702 unsigned int num_sco_packets_sent = 0; 703 btstack_linked_item_t *it; 704 if (hci_stack->synchronous_flow_control_enabled){ 705 // explicit flow control 706 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 707 hci_connection_t * connection = (hci_connection_t *) it; 708 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 709 num_sco_packets_sent += connection->num_packets_sent; 710 } 711 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 712 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 713 return 0; 714 } 715 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 716 } else { 717 // implicit flow control -- TODO 718 int num_ready = 0; 719 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 720 hci_connection_t * connection = (hci_connection_t *) it; 721 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 722 if (connection->sco_tx_ready == 0) continue; 723 num_ready++; 724 } 725 return num_ready; 726 } 727 } 728 #endif 729 730 // only used to send HCI Host Number Completed Packets 731 static int hci_can_send_comand_packet_transport(void){ 732 if (hci_stack->hci_packet_buffer_reserved) return 0; 733 734 // check for async hci transport implementations 735 if (hci_stack->hci_transport->can_send_packet_now){ 736 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 737 return 0; 738 } 739 } 740 return 1; 741 } 742 743 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 744 bool hci_can_send_command_packet_now(void){ 745 if (hci_can_send_comand_packet_transport() == 0) return false; 746 return hci_stack->num_cmd_packets > 0u; 747 } 748 749 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 750 // check for async hci transport implementations 751 if (!hci_stack->hci_transport->can_send_packet_now) return true; 752 return hci_stack->hci_transport->can_send_packet_now(packet_type); 753 } 754 755 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 756 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 757 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 758 } 759 760 bool hci_can_send_acl_le_packet_now(void){ 761 if (hci_stack->hci_packet_buffer_reserved) return false; 762 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 763 } 764 765 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 766 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 767 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 768 } 769 770 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 771 if (hci_stack->hci_packet_buffer_reserved) return false; 772 return hci_can_send_prepared_acl_packet_now(con_handle); 773 } 774 775 #ifdef ENABLE_CLASSIC 776 bool hci_can_send_acl_classic_packet_now(void){ 777 if (hci_stack->hci_packet_buffer_reserved) return false; 778 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 779 } 780 781 bool hci_can_send_prepared_sco_packet_now(void){ 782 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 783 if (hci_have_usb_transport()){ 784 return hci_stack->sco_can_send_now; 785 } else { 786 return hci_number_free_sco_slots() > 0; 787 } 788 } 789 790 bool hci_can_send_sco_packet_now(void){ 791 if (hci_stack->hci_packet_buffer_reserved) return false; 792 return hci_can_send_prepared_sco_packet_now(); 793 } 794 795 void hci_request_sco_can_send_now_event(void){ 796 hci_stack->sco_waiting_for_can_send_now = 1; 797 hci_notify_if_sco_can_send_now(); 798 } 799 #endif 800 801 // used for internal checks in l2cap.c 802 bool hci_is_packet_buffer_reserved(void){ 803 return hci_stack->hci_packet_buffer_reserved; 804 } 805 806 // reserves outgoing packet buffer. 807 // @return 1 if successful 808 bool hci_reserve_packet_buffer(void){ 809 if (hci_stack->hci_packet_buffer_reserved) { 810 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 811 return false; 812 } 813 hci_stack->hci_packet_buffer_reserved = true; 814 return true; 815 } 816 817 void hci_release_packet_buffer(void){ 818 hci_stack->hci_packet_buffer_reserved = false; 819 } 820 821 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 822 static int hci_transport_synchronous(void){ 823 return hci_stack->hci_transport->can_send_packet_now == NULL; 824 } 825 826 // used for debugging 827 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 828 static void hci_controller_dump_packets(void){ 829 // format: "{handle:04x}:{count:02d} " 830 char summaries[3][7 * 8 + 1]; 831 uint16_t totals[3]; 832 uint8_t index; 833 for (index = 0 ; index < 3 ; index++){ 834 summaries[index][0] = 0; 835 totals[index] = 0; 836 } 837 btstack_linked_item_t *it; 838 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 839 hci_connection_t * connection = (hci_connection_t *) it; 840 switch (connection->address_type){ 841 case BD_ADDR_TYPE_ACL: 842 index = 0; 843 break; 844 case BD_ADDR_TYPE_SCO: 845 index = 2; 846 break; 847 default: 848 index = 1; 849 break; 850 } 851 totals[index] += connection->num_packets_sent; 852 char item_text[10]; 853 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 854 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 855 } 856 for (index = 0 ; index < 3 ; index++){ 857 if (summaries[index][0] == 0){ 858 summaries[index][0] = '-'; 859 summaries[index][1] = 0; 860 } 861 } 862 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]); 863 } 864 #endif 865 866 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 867 868 // 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); 869 870 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 871 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 872 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 873 max_acl_data_packet_length = hci_stack->le_data_packets_length; 874 } 875 876 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 877 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 878 max_acl_data_packet_length = connection->le_max_tx_octets; 879 } 880 #endif 881 882 log_debug("hci_send_acl_packet_fragments entered"); 883 884 uint8_t status = ERROR_CODE_SUCCESS; 885 // multiple packets could be send on a synchronous HCI transport 886 while (true){ 887 888 log_debug("hci_send_acl_packet_fragments loop entered"); 889 890 // get current data 891 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 892 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 893 bool more_fragments = false; 894 895 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 896 if (current_acl_data_packet_length > max_acl_data_packet_length){ 897 more_fragments = true; 898 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 899 } 900 901 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 902 if (acl_header_pos > 0u){ 903 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 904 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 905 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 906 } 907 908 // update header len 909 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 910 911 // count packet 912 connection->num_packets_sent++; 913 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 914 915 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 916 if (more_fragments){ 917 // update start of next fragment to send 918 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 919 } else { 920 // done 921 hci_stack->acl_fragmentation_pos = 0; 922 hci_stack->acl_fragmentation_total_size = 0; 923 } 924 925 // send packet 926 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 927 const int size = current_acl_data_packet_length + 4; 928 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 929 hci_stack->acl_fragmentation_tx_active = 1; 930 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 931 if (err != 0){ 932 // no error from HCI Transport expected 933 status = ERROR_CODE_HARDWARE_FAILURE; 934 } 935 936 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 937 hci_controller_dump_packets(); 938 #endif 939 940 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 941 942 // done yet? 943 if (!more_fragments) break; 944 945 // can send more? 946 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 947 } 948 949 log_debug("hci_send_acl_packet_fragments loop over"); 950 951 // release buffer now for synchronous transport 952 if (hci_transport_synchronous()){ 953 hci_stack->acl_fragmentation_tx_active = 0; 954 hci_release_packet_buffer(); 955 hci_emit_transport_packet_sent(); 956 } 957 958 return status; 959 } 960 961 // pre: caller has reserved the packet buffer 962 uint8_t hci_send_acl_packet_buffer(int size){ 963 btstack_assert(hci_stack->hci_packet_buffer_reserved); 964 965 uint8_t * packet = hci_stack->hci_packet_buffer; 966 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 967 968 hci_connection_t *connection = hci_connection_for_handle( con_handle); 969 if (!connection) { 970 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 971 hci_release_packet_buffer(); 972 hci_emit_transport_packet_sent(); 973 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 974 } 975 976 // check for free places on Bluetooth module 977 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 978 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 979 hci_release_packet_buffer(); 980 hci_emit_transport_packet_sent(); 981 return BTSTACK_ACL_BUFFERS_FULL; 982 } 983 984 #ifdef ENABLE_CLASSIC 985 hci_connection_timestamp(connection); 986 #endif 987 988 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 989 990 // setup data 991 hci_stack->acl_fragmentation_total_size = size; 992 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 993 994 return hci_send_acl_packet_fragments(connection); 995 } 996 997 #ifdef ENABLE_CLASSIC 998 // pre: caller has reserved the packet buffer 999 uint8_t hci_send_sco_packet_buffer(int size){ 1000 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1001 1002 uint8_t * packet = hci_stack->hci_packet_buffer; 1003 1004 // skip checks in loopback mode 1005 if (!hci_stack->loopback_mode){ 1006 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1007 1008 // check for free places on Bluetooth module 1009 if (!hci_can_send_prepared_sco_packet_now()) { 1010 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1011 hci_release_packet_buffer(); 1012 hci_emit_transport_packet_sent(); 1013 return BTSTACK_ACL_BUFFERS_FULL; 1014 } 1015 1016 // track send packet in connection struct 1017 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1018 if (!connection) { 1019 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1020 hci_release_packet_buffer(); 1021 hci_emit_transport_packet_sent(); 1022 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1023 } 1024 1025 if (hci_have_usb_transport()){ 1026 // token used 1027 hci_stack->sco_can_send_now = false; 1028 } else { 1029 if (hci_stack->synchronous_flow_control_enabled){ 1030 connection->num_packets_sent++; 1031 } else { 1032 connection->sco_tx_ready--; 1033 } 1034 } 1035 } 1036 1037 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1038 1039 #ifdef HAVE_SCO_TRANSPORT 1040 hci_stack->sco_transport->send_packet(packet, size); 1041 hci_release_packet_buffer(); 1042 hci_emit_transport_packet_sent(); 1043 1044 return 0; 1045 #else 1046 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1047 if (hci_transport_synchronous()){ 1048 hci_release_packet_buffer(); 1049 hci_emit_transport_packet_sent(); 1050 } 1051 1052 if (err != 0){ 1053 return ERROR_CODE_HARDWARE_FAILURE; 1054 } 1055 return ERROR_CODE_SUCCESS; 1056 #endif 1057 } 1058 #endif 1059 1060 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1061 static uint8_t hci_send_iso_packet_fragments(void){ 1062 1063 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1064 uint8_t status = ERROR_CODE_SUCCESS; 1065 // multiple packets could be send on a synchronous HCI transport 1066 while (true){ 1067 1068 // get current data 1069 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1070 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1071 bool more_fragments = false; 1072 1073 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1074 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1075 more_fragments = true; 1076 current_iso_data_packet_length = max_iso_data_packet_length; 1077 } 1078 1079 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1080 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1081 uint8_t pb_flags; 1082 if (iso_header_pos == 0u){ 1083 // first fragment, keep TS field 1084 pb_flags = more_fragments ? 0x00 : 0x02; 1085 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1086 } else { 1087 // later fragment, drop TS field 1088 pb_flags = more_fragments ? 0x01 : 0x03; 1089 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1090 } 1091 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1092 1093 // update header len 1094 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1095 1096 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1097 if (more_fragments){ 1098 // update start of next fragment to send 1099 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1100 } else { 1101 // done 1102 hci_stack->iso_fragmentation_pos = 0; 1103 hci_stack->iso_fragmentation_total_size = 0; 1104 } 1105 1106 // send packet 1107 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1108 const int size = current_iso_data_packet_length + 4; 1109 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1110 hci_stack->iso_fragmentation_tx_active = true; 1111 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1112 if (err != 0){ 1113 // no error from HCI Transport expected 1114 status = ERROR_CODE_HARDWARE_FAILURE; 1115 } 1116 1117 // done yet? 1118 if (!more_fragments) break; 1119 1120 // can send more? 1121 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1122 } 1123 1124 // release buffer now for synchronous transport 1125 if (hci_transport_synchronous()){ 1126 hci_stack->iso_fragmentation_tx_active = false; 1127 hci_release_packet_buffer(); 1128 hci_emit_transport_packet_sent(); 1129 } 1130 1131 return status; 1132 } 1133 1134 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1135 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1136 1137 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1138 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1139 if (iso_stream == NULL){ 1140 hci_release_packet_buffer(); 1141 hci_iso_notify_can_send_now(); 1142 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1143 } 1144 1145 // TODO: check for space on controller 1146 1147 // skip iso packets if needed 1148 if (iso_stream->num_packets_to_skip > 0){ 1149 iso_stream->num_packets_to_skip--; 1150 // pretend it was processed and trigger next one 1151 hci_release_packet_buffer(); 1152 hci_iso_notify_can_send_now(); 1153 return ERROR_CODE_SUCCESS; 1154 } 1155 1156 // track outgoing packet sent 1157 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1158 iso_stream->num_packets_sent++; 1159 1160 // setup data 1161 hci_stack->iso_fragmentation_total_size = size; 1162 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1163 1164 return hci_send_iso_packet_fragments(); 1165 } 1166 #endif 1167 1168 static void acl_handler(uint8_t *packet, uint16_t size){ 1169 1170 // get info 1171 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1172 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1173 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1174 uint16_t acl_length = READ_ACL_LENGTH(packet); 1175 1176 // ignore non-registered handle 1177 if (!conn){ 1178 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1179 return; 1180 } 1181 1182 // assert packet is complete 1183 if ((acl_length + 4u) != size){ 1184 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1185 return; 1186 } 1187 1188 #ifdef ENABLE_CLASSIC 1189 // update idle timestamp 1190 hci_connection_timestamp(conn); 1191 #endif 1192 1193 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1194 hci_stack->host_completed_packets = 1; 1195 conn->num_packets_completed++; 1196 #endif 1197 1198 // handle different packet types 1199 switch (acl_flags & 0x03u) { 1200 1201 case 0x01: // continuation fragment 1202 1203 // sanity checks 1204 if (conn->acl_recombination_pos == 0u) { 1205 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1206 return; 1207 } 1208 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1209 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1210 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1211 conn->acl_recombination_pos = 0; 1212 return; 1213 } 1214 1215 // append fragment payload (header already stored) 1216 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1217 &packet[4], acl_length); 1218 conn->acl_recombination_pos += acl_length; 1219 1220 // forward complete L2CAP packet if complete. 1221 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1222 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1223 // reset recombination buffer 1224 conn->acl_recombination_length = 0; 1225 conn->acl_recombination_pos = 0; 1226 } 1227 break; 1228 1229 case 0x02: { // first fragment 1230 1231 // sanity check 1232 if (conn->acl_recombination_pos) { 1233 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1234 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1235 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1236 } 1237 conn->acl_recombination_pos = 0; 1238 } 1239 1240 // peek into L2CAP packet! 1241 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1242 1243 // compare fragment size to L2CAP packet size 1244 if (acl_length >= (l2cap_length + 4u)){ 1245 // forward fragment as L2CAP packet 1246 hci_emit_acl_packet(packet, acl_length + 4u); 1247 } else { 1248 1249 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1250 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1251 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1252 return; 1253 } 1254 1255 // store first fragment and tweak acl length for complete package 1256 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1257 packet, acl_length + 4u); 1258 conn->acl_recombination_pos = acl_length + 4u; 1259 conn->acl_recombination_length = l2cap_length; 1260 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1261 } 1262 break; 1263 1264 } 1265 default: 1266 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1267 return; 1268 } 1269 1270 // execute main loop 1271 hci_run(); 1272 } 1273 1274 static void hci_connection_stop_timer(hci_connection_t * conn){ 1275 btstack_run_loop_remove_timer(&conn->timeout); 1276 #ifdef ENABLE_CLASSIC 1277 btstack_run_loop_remove_timer(&conn->timeout_sco); 1278 #endif 1279 } 1280 1281 static void hci_shutdown_connection(hci_connection_t *conn){ 1282 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1283 1284 #ifdef ENABLE_CLASSIC 1285 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1286 bd_addr_type_t addr_type = conn->address_type; 1287 #endif 1288 #ifdef HAVE_SCO_TRANSPORT 1289 hci_con_handle_t con_handle = conn->con_handle; 1290 #endif 1291 #endif 1292 1293 hci_connection_stop_timer(conn); 1294 1295 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1296 btstack_memory_hci_connection_free( conn ); 1297 1298 // now it's gone 1299 hci_emit_nr_connections_changed(); 1300 1301 #ifdef ENABLE_CLASSIC 1302 #ifdef ENABLE_SCO_OVER_HCI 1303 // update SCO 1304 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1305 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1306 } 1307 #endif 1308 #ifdef HAVE_SCO_TRANSPORT 1309 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1310 hci_stack->sco_transport->close(con_handle); 1311 } 1312 #endif 1313 #endif 1314 } 1315 1316 #ifdef ENABLE_CLASSIC 1317 1318 static const uint16_t hci_acl_packet_type_sizes[] = { 1319 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1320 HCI_ACL_DH1_SIZE, 0, 0, 0, 1321 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1322 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1323 }; 1324 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1325 0, // 3 slot packets 1326 1, // 5 slot packets 1327 25, // EDR 2 mpbs 1328 26, // EDR 3 mbps 1329 39, // 3 slot EDR packts 1330 40, // 5 slot EDR packet 1331 }; 1332 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1333 0x0f00, // 3 slot packets 1334 0xf000, // 5 slot packets 1335 0x1102, // EDR 2 mpbs 1336 0x2204, // EDR 3 mbps 1337 0x0300, // 3 slot EDR packts 1338 0x3000, // 5 slot EDR packet 1339 }; 1340 1341 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1342 // enable packet types based on size 1343 uint16_t packet_types = 0; 1344 unsigned int i; 1345 for (i=0;i<16;i++){ 1346 if (hci_acl_packet_type_sizes[i] == 0) continue; 1347 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1348 packet_types |= 1 << i; 1349 } 1350 } 1351 // disable packet types due to missing local supported features 1352 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1353 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1354 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1355 if (feature_set) continue; 1356 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1357 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1358 } 1359 return packet_types; 1360 } 1361 1362 uint16_t hci_usable_acl_packet_types(void){ 1363 // flip bits for "may not be used" 1364 return hci_stack->usable_packet_types_acl ^ 0x3306; 1365 } 1366 1367 static const struct { 1368 uint8_t feature_index; 1369 uint16_t feature_packet_mask; 1370 } hci_sco_packet_type_feature_requirements[] = { 1371 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1372 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1373 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1374 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1375 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1376 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1377 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1378 }; 1379 1380 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1381 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1382 unsigned int i; 1383 // disable packet types due to missing local supported features 1384 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1385 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1386 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1387 if (feature_set) continue; 1388 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_sco_packet_type_feature_requirements[i].feature_packet_mask); 1389 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1390 } 1391 return packet_types; 1392 } 1393 1394 uint16_t hci_usable_sco_packet_types(void){ 1395 return hci_stack->usable_packet_types_sco; 1396 } 1397 1398 #endif 1399 1400 uint8_t* hci_get_outgoing_packet_buffer(void){ 1401 // hci packet buffer is >= acl data packet length 1402 return hci_stack->hci_packet_buffer; 1403 } 1404 1405 uint16_t hci_max_acl_data_packet_length(void){ 1406 return hci_stack->acl_data_packet_length; 1407 } 1408 1409 #ifdef ENABLE_CLASSIC 1410 bool hci_extended_sco_link_supported(void){ 1411 // No. 31, byte 3, bit 7 1412 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1413 } 1414 #endif 1415 1416 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1417 // No. 54, byte 6, bit 6 1418 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1419 } 1420 1421 #ifdef ENABLE_CLASSIC 1422 static int gap_ssp_supported(void){ 1423 // No. 51, byte 6, bit 3 1424 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1425 } 1426 #endif 1427 1428 static int hci_classic_supported(void){ 1429 #ifdef ENABLE_CLASSIC 1430 // No. 37, byte 4, bit 5, = No BR/EDR Support 1431 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1432 #else 1433 return 0; 1434 #endif 1435 } 1436 1437 static int hci_le_supported(void){ 1438 #ifdef ENABLE_BLE 1439 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1440 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1441 #else 1442 return 0; 1443 #endif 1444 } 1445 1446 static bool hci_command_supported(uint8_t command_index){ 1447 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1448 } 1449 1450 #ifdef ENABLE_BLE 1451 1452 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1453 static bool hci_extended_advertising_supported(void){ 1454 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1455 } 1456 #endif 1457 1458 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1459 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1460 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1461 } else { 1462 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1463 } 1464 } 1465 1466 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1467 *addr_type = hci_stack->le_own_addr_type; 1468 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1469 } 1470 1471 #ifdef ENABLE_LE_PERIPHERAL 1472 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1473 *addr_type = hci_stack->le_advertisements_own_addr_type; 1474 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1475 }; 1476 #endif 1477 1478 #ifdef ENABLE_LE_CENTRAL 1479 1480 /** 1481 * @brief Get own addr type and address used for LE connections (Central) 1482 */ 1483 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1484 *addr_type = hci_stack->le_connection_own_addr_type; 1485 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1486 } 1487 1488 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1489 1490 uint16_t offset = 3; 1491 uint8_t num_reports = packet[offset]; 1492 offset += 1; 1493 1494 uint16_t i; 1495 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1496 for (i=0; (i<num_reports) && (offset < size);i++){ 1497 // sanity checks on data_length: 1498 uint8_t data_length = packet[offset + 8]; 1499 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1500 if ((offset + 9u + data_length + 1u) > size) return; 1501 // setup event 1502 uint8_t event_size = 10u + data_length; 1503 uint16_t pos = 0; 1504 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1505 event[pos++] = event_size; 1506 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1507 offset += 8; 1508 pos += 8; 1509 event[pos++] = packet[offset + 1 + data_length]; // rssi 1510 event[pos++] = data_length; 1511 offset++; 1512 (void)memcpy(&event[pos], &packet[offset], data_length); 1513 pos += data_length; 1514 offset += data_length + 1u; // rssi 1515 hci_emit_event(event, pos, 1); 1516 } 1517 } 1518 1519 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1520 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1521 uint16_t offset = 3; 1522 uint8_t num_reports = packet[offset++]; 1523 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1524 uint8_t i; 1525 for (i=0; (i<num_reports) && (offset < size);i++){ 1526 // sanity checks on data_length: 1527 uint16_t data_length = packet[offset + 23]; 1528 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1529 if ((offset + 24u + data_length) > size) return; 1530 uint16_t event_type = little_endian_read_16(packet, offset); 1531 offset += 2; 1532 if ((event_type & 0x10) != 0) { 1533 // setup legacy event 1534 uint8_t legacy_event_type; 1535 switch (event_type){ 1536 case 0b0010011: 1537 // ADV_IND 1538 legacy_event_type = 0; 1539 break; 1540 case 0b0010101: 1541 // ADV_DIRECT_IND 1542 legacy_event_type = 1; 1543 break; 1544 case 0b0010010: 1545 // ADV_SCAN_IND 1546 legacy_event_type = 2; 1547 break; 1548 case 0b0010000: 1549 // ADV_NONCONN_IND 1550 legacy_event_type = 3; 1551 break; 1552 case 0b0011011: 1553 case 0b0011010: 1554 // SCAN_RSP 1555 legacy_event_type = 4; 1556 break; 1557 default: 1558 legacy_event_type = 0; 1559 break; 1560 } 1561 uint16_t pos = 0; 1562 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1563 event[pos++] = 10u + data_length; 1564 event[pos++] = legacy_event_type; 1565 // copy address type + address 1566 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1567 offset += 7; 1568 pos += 7; 1569 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1570 offset += 4; 1571 // copy rssi 1572 event[pos++] = packet[offset++]; 1573 // skip periodic advertising interval and direct address 1574 offset += 9; 1575 // copy data len + data; 1576 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1577 pos += 1 +data_length; 1578 offset += 1+ data_length; 1579 hci_emit_event(event, pos, 1); 1580 } else { 1581 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1582 uint8_t report_len = 24 + data_length; 1583 event[1] = report_len; 1584 little_endian_store_16(event, 2, event_type); 1585 memcpy(&event[4], &packet[offset], report_len); 1586 offset += report_len; 1587 hci_emit_event(event, 2 + report_len, 1); 1588 } 1589 } 1590 } 1591 #endif 1592 1593 #endif 1594 #endif 1595 1596 #ifdef ENABLE_BLE 1597 #ifdef ENABLE_LE_PERIPHERAL 1598 static void hci_update_advertisements_enabled_for_current_roles(void){ 1599 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1600 // get number of active le slave connections 1601 int num_slave_connections = 0; 1602 btstack_linked_list_iterator_t it; 1603 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1604 while (btstack_linked_list_iterator_has_next(&it)){ 1605 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1606 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1607 if (con->state != OPEN) continue; 1608 if (con->role != HCI_ROLE_SLAVE) continue; 1609 if (!hci_is_le_connection(con)) continue; 1610 num_slave_connections++; 1611 } 1612 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1613 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1614 } else { 1615 hci_stack->le_advertisements_enabled_for_current_roles = false; 1616 } 1617 } 1618 #endif 1619 #endif 1620 1621 #ifdef ENABLE_CLASSIC 1622 static void gap_run_set_local_name(void){ 1623 hci_reserve_packet_buffer(); 1624 uint8_t * packet = hci_stack->hci_packet_buffer; 1625 // construct HCI Command and send 1626 uint16_t opcode = hci_write_local_name.opcode; 1627 hci_stack->last_cmd_opcode = opcode; 1628 packet[0] = opcode & 0xff; 1629 packet[1] = opcode >> 8; 1630 packet[2] = DEVICE_NAME_LEN; 1631 memset(&packet[3], 0, DEVICE_NAME_LEN); 1632 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1633 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1634 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1635 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1636 // expand '00:00:00:00:00:00' in name with bd_addr 1637 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1638 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1639 } 1640 1641 static void gap_run_set_eir_data(void){ 1642 hci_reserve_packet_buffer(); 1643 uint8_t * packet = hci_stack->hci_packet_buffer; 1644 // construct HCI Command in-place and send 1645 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1646 hci_stack->last_cmd_opcode = opcode; 1647 uint16_t offset = 0; 1648 packet[offset++] = opcode & 0xff; 1649 packet[offset++] = opcode >> 8; 1650 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1651 packet[offset++] = 0; // FEC not required 1652 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1653 if (hci_stack->eir_data){ 1654 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1655 ad_context_t context; 1656 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1657 uint8_t data_type = ad_iterator_get_data_type(&context); 1658 uint8_t size = ad_iterator_get_data_len(&context); 1659 const uint8_t *data = ad_iterator_get_data(&context); 1660 // copy item 1661 packet[offset++] = size + 1; 1662 packet[offset++] = data_type; 1663 memcpy(&packet[offset], data, size); 1664 // update name item 1665 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1666 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1667 } 1668 offset += size; 1669 } 1670 } else { 1671 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1672 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1673 packet[offset++] = bytes_to_copy + 1; 1674 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1675 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1676 // expand '00:00:00:00:00:00' in name with bd_addr 1677 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1678 } 1679 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1680 } 1681 1682 static void hci_run_gap_tasks_classic(void){ 1683 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1684 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1685 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1686 return; 1687 } 1688 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1689 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1690 gap_run_set_local_name(); 1691 return; 1692 } 1693 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1694 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1695 gap_run_set_eir_data(); 1696 return; 1697 } 1698 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1699 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1700 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1701 return; 1702 } 1703 // write page scan activity 1704 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1705 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1706 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1707 return; 1708 } 1709 // write page scan type 1710 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1711 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1712 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1713 return; 1714 } 1715 // write page timeout 1716 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1717 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1718 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1719 return; 1720 } 1721 // send scan enable 1722 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1723 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1724 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1725 return; 1726 } 1727 // send write scan activity 1728 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1729 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1730 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1731 return; 1732 } 1733 // send write inquiry transmit power level 1734 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1735 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1736 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1737 return; 1738 } 1739 } 1740 #endif 1741 1742 #ifndef HAVE_HOST_CONTROLLER_API 1743 1744 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1745 if (!hci_stack->config) return 0; 1746 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1747 // Limit baud rate for Broadcom chipsets to 3 mbps 1748 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1749 baud_rate = 3000000; 1750 } 1751 return baud_rate; 1752 } 1753 1754 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1755 UNUSED(ds); 1756 1757 switch (hci_stack->substate){ 1758 case HCI_INIT_W4_SEND_RESET: 1759 log_info("Resend HCI Reset"); 1760 hci_stack->substate = HCI_INIT_SEND_RESET; 1761 hci_stack->num_cmd_packets = 1; 1762 hci_run(); 1763 break; 1764 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1765 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1766 if (hci_stack->hci_transport->reset_link){ 1767 hci_stack->hci_transport->reset_link(); 1768 } 1769 1770 /* fall through */ 1771 1772 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1773 log_info("Resend HCI Reset - CSR Warm Boot"); 1774 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1775 hci_stack->num_cmd_packets = 1; 1776 hci_run(); 1777 break; 1778 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1779 if (hci_stack->hci_transport->set_baudrate){ 1780 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1781 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1782 hci_stack->hci_transport->set_baudrate(baud_rate); 1783 } 1784 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1785 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1786 if (hci_stack->hci_transport->reset_link){ 1787 log_info("Link Reset"); 1788 hci_stack->hci_transport->reset_link(); 1789 } 1790 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1791 hci_run(); 1792 } 1793 break; 1794 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1795 // otherwise continue 1796 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1797 hci_send_cmd(&hci_read_local_supported_commands); 1798 break; 1799 default: 1800 break; 1801 } 1802 } 1803 #endif 1804 1805 static void hci_initializing_next_state(void){ 1806 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1807 } 1808 1809 static void hci_init_done(void){ 1810 // done. tell the app 1811 log_info("hci_init_done -> HCI_STATE_WORKING"); 1812 hci_stack->state = HCI_STATE_WORKING; 1813 hci_emit_state(); 1814 } 1815 1816 // assumption: hci_can_send_command_packet_now() == true 1817 static void hci_initializing_run(void){ 1818 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1819 1820 if (!hci_can_send_command_packet_now()) return; 1821 1822 #ifndef HAVE_HOST_CONTROLLER_API 1823 bool need_baud_change = hci_stack->config 1824 && hci_stack->chipset 1825 && hci_stack->chipset->set_baudrate_command 1826 && hci_stack->hci_transport->set_baudrate 1827 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1828 #endif 1829 1830 switch (hci_stack->substate){ 1831 case HCI_INIT_SEND_RESET: 1832 hci_state_reset(); 1833 1834 #ifndef HAVE_HOST_CONTROLLER_API 1835 // prepare reset if command complete not received in 100ms 1836 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1837 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1838 btstack_run_loop_add_timer(&hci_stack->timeout); 1839 #endif 1840 // send command 1841 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1842 hci_send_cmd(&hci_reset); 1843 break; 1844 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1845 hci_send_cmd(&hci_read_local_version_information); 1846 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1847 break; 1848 1849 #ifndef HAVE_HOST_CONTROLLER_API 1850 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1851 hci_state_reset(); 1852 // prepare reset if command complete not received in 100ms 1853 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1854 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1855 btstack_run_loop_add_timer(&hci_stack->timeout); 1856 // send command 1857 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1858 hci_send_cmd(&hci_reset); 1859 break; 1860 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1861 hci_state_reset(); 1862 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1863 hci_send_cmd(&hci_reset); 1864 break; 1865 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1866 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1867 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1868 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1869 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1870 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1871 break; 1872 } 1873 case HCI_INIT_SET_BD_ADDR: 1874 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1875 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1876 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1877 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1878 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1879 break; 1880 case HCI_INIT_SEND_READ_LOCAL_NAME: 1881 #ifdef ENABLE_CLASSIC 1882 hci_send_cmd(&hci_read_local_name); 1883 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1884 break; 1885 #endif 1886 /* fall through */ 1887 1888 case HCI_INIT_SEND_BAUD_CHANGE: 1889 if (need_baud_change) { 1890 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1891 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1892 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1893 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1894 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1895 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1896 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1897 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1898 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1899 btstack_run_loop_add_timer(&hci_stack->timeout); 1900 } 1901 break; 1902 } 1903 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1904 1905 /* fall through */ 1906 1907 case HCI_INIT_CUSTOM_INIT: 1908 case HCI_INIT_CUSTOM_PRE_INIT: 1909 // Custom initialization 1910 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1911 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1912 bool send_cmd = false; 1913 switch (hci_stack->chipset_result){ 1914 case BTSTACK_CHIPSET_VALID_COMMAND: 1915 send_cmd = true; 1916 switch (hci_stack->substate){ 1917 case HCI_INIT_CUSTOM_INIT: 1918 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1919 break; 1920 case HCI_INIT_CUSTOM_PRE_INIT: 1921 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1922 break; 1923 default: 1924 btstack_assert(false); 1925 break; 1926 } 1927 break; 1928 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1929 send_cmd = true; 1930 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1931 log_info("CSR Warm Boot"); 1932 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1933 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1934 btstack_run_loop_add_timer(&hci_stack->timeout); 1935 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1936 && hci_stack->config 1937 && hci_stack->chipset 1938 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1939 && hci_stack->hci_transport->set_baudrate 1940 && hci_transport_uart_get_main_baud_rate()){ 1941 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1942 } else { 1943 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1944 } 1945 break; 1946 default: 1947 break; 1948 } 1949 1950 if (send_cmd){ 1951 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1952 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1953 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1954 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1955 break; 1956 } 1957 log_info("Init script done"); 1958 1959 // Custom Pre-Init complete, start regular init with HCI Reset 1960 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 1961 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1962 hci_send_cmd(&hci_reset); 1963 break; 1964 } 1965 1966 // Init script download on Broadcom chipsets causes: 1967 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1968 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1969 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1970 1971 // - baud rate to reset, restore UART baud rate if needed 1972 if (need_baud_change) { 1973 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1974 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1975 hci_stack->hci_transport->set_baudrate(baud_rate); 1976 } 1977 1978 uint16_t bcm_delay_ms = 300; 1979 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1980 // -> Work around: wait here. 1981 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1982 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1983 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1984 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1985 btstack_run_loop_add_timer(&hci_stack->timeout); 1986 break; 1987 } 1988 } 1989 #endif 1990 /* fall through */ 1991 1992 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1993 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1994 hci_send_cmd(&hci_read_local_supported_commands); 1995 break; 1996 case HCI_INIT_READ_BD_ADDR: 1997 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1998 hci_send_cmd(&hci_read_bd_addr); 1999 break; 2000 case HCI_INIT_READ_BUFFER_SIZE: 2001 // only read buffer size if supported 2002 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2003 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2004 hci_send_cmd(&hci_read_buffer_size); 2005 break; 2006 } 2007 2008 /* fall through */ 2009 2010 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2011 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2012 hci_send_cmd(&hci_read_local_supported_features); 2013 break; 2014 2015 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2016 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2017 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2018 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2019 break; 2020 case HCI_INIT_HOST_BUFFER_SIZE: 2021 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2022 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2023 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2024 break; 2025 #endif 2026 2027 case HCI_INIT_SET_EVENT_MASK: 2028 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2029 if (hci_le_supported()){ 2030 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2031 } else { 2032 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2033 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2034 } 2035 break; 2036 2037 case HCI_INIT_SET_EVENT_MASK_2: 2038 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2039 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2040 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2041 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2042 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2043 // Encryption Change Event v2 - bit 25 2044 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2045 break; 2046 } 2047 2048 #ifdef ENABLE_CLASSIC 2049 /* fall through */ 2050 2051 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2052 if (hci_classic_supported() && gap_ssp_supported()){ 2053 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2054 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2055 break; 2056 } 2057 2058 /* fall through */ 2059 2060 case HCI_INIT_WRITE_INQUIRY_MODE: 2061 if (hci_classic_supported()){ 2062 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2063 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2064 break; 2065 } 2066 2067 /* fall through */ 2068 2069 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2070 // skip write secure connections host support if not supported or disabled 2071 if (hci_classic_supported() && hci_stack->secure_connections_enable 2072 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2073 hci_stack->secure_connections_active = true; 2074 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2075 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2076 break; 2077 } 2078 2079 /* fall through */ 2080 2081 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2082 // skip set min encryption key size 2083 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2084 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2085 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2086 break; 2087 } 2088 2089 #ifdef ENABLE_SCO_OVER_HCI 2090 /* fall through */ 2091 2092 // only sent if ENABLE_SCO_OVER_HCI is defined 2093 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2094 // skip write synchronous flow control if not supported 2095 if (hci_classic_supported() 2096 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2097 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2098 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2099 break; 2100 } 2101 /* fall through */ 2102 2103 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2104 // skip write default erroneous data reporting if not supported 2105 if (hci_classic_supported() 2106 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2107 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2108 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2109 break; 2110 } 2111 #endif 2112 2113 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2114 /* fall through */ 2115 2116 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2117 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2118 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2119 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2120 #ifdef ENABLE_SCO_OVER_HCI 2121 log_info("BCM: Route SCO data via HCI transport"); 2122 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2123 #endif 2124 #ifdef ENABLE_SCO_OVER_PCM 2125 log_info("BCM: Route SCO data via PCM interface"); 2126 #ifdef ENABLE_BCM_PCM_WBS 2127 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2128 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2129 #else 2130 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2131 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2132 #endif 2133 #endif 2134 break; 2135 } 2136 #endif 2137 2138 #ifdef ENABLE_SCO_OVER_PCM 2139 /* fall through */ 2140 2141 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2142 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2143 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2144 log_info("BCM: Config PCM interface for I2S"); 2145 #ifdef ENABLE_BCM_PCM_WBS 2146 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2147 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2148 #else 2149 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2150 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2151 #endif 2152 break; 2153 } 2154 #endif 2155 #endif 2156 2157 #ifdef ENABLE_BLE 2158 /* fall through */ 2159 2160 // LE INIT 2161 case HCI_INIT_LE_READ_BUFFER_SIZE: 2162 if (hci_le_supported()){ 2163 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2164 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2165 hci_send_cmd(&hci_le_read_buffer_size_v2); 2166 } else { 2167 hci_send_cmd(&hci_le_read_buffer_size); 2168 } 2169 break; 2170 } 2171 2172 /* fall through */ 2173 2174 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2175 // skip write le host if not supported (e.g. on LE only EM9301) 2176 if (hci_le_supported() 2177 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2178 // LE Supported Host = 1, Simultaneous Host = 0 2179 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2180 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2181 break; 2182 } 2183 2184 /* fall through */ 2185 2186 case HCI_INIT_LE_SET_EVENT_MASK: 2187 if (hci_le_supported()){ 2188 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2189 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2190 break; 2191 } 2192 #endif 2193 2194 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2195 /* fall through */ 2196 2197 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2198 if (hci_le_supported() 2199 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2200 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2201 hci_send_cmd(&hci_le_read_maximum_data_length); 2202 break; 2203 } 2204 2205 /* fall through */ 2206 2207 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2208 if (hci_le_supported() 2209 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2210 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2211 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2212 break; 2213 } 2214 #endif 2215 2216 #ifdef ENABLE_LE_CENTRAL 2217 /* fall through */ 2218 2219 case HCI_INIT_READ_WHITE_LIST_SIZE: 2220 if (hci_le_supported()){ 2221 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2222 hci_send_cmd(&hci_le_read_white_list_size); 2223 break; 2224 } 2225 2226 #endif 2227 2228 #ifdef ENABLE_LE_PERIPHERAL 2229 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2230 /* fall through */ 2231 2232 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2233 if (hci_extended_advertising_supported()){ 2234 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2235 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2236 break; 2237 } 2238 #endif 2239 #endif 2240 /* fall through */ 2241 2242 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2243 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2244 if (hci_le_supported()) { 2245 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2246 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2247 break; 2248 } 2249 #endif 2250 2251 /* fall through */ 2252 2253 case HCI_INIT_DONE: 2254 hci_stack->substate = HCI_INIT_DONE; 2255 // main init sequence complete 2256 #ifdef ENABLE_CLASSIC 2257 // check if initial Classic GAP Tasks are completed 2258 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2259 hci_run_gap_tasks_classic(); 2260 break; 2261 } 2262 #endif 2263 #ifdef ENABLE_BLE 2264 #ifdef ENABLE_LE_CENTRAL 2265 // check if initial LE GAP Tasks are completed 2266 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2267 hci_run_general_gap_le(); 2268 break; 2269 } 2270 #endif 2271 #endif 2272 hci_init_done(); 2273 break; 2274 2275 default: 2276 return; 2277 } 2278 } 2279 2280 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2281 bool command_completed = false; 2282 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2283 uint16_t opcode = little_endian_read_16(packet,3); 2284 if (opcode == hci_stack->last_cmd_opcode){ 2285 command_completed = true; 2286 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2287 } else { 2288 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2289 } 2290 } 2291 2292 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2293 uint8_t status = packet[2]; 2294 uint16_t opcode = little_endian_read_16(packet,4); 2295 if (opcode == hci_stack->last_cmd_opcode){ 2296 if (status){ 2297 command_completed = true; 2298 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2299 } else { 2300 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2301 } 2302 } else { 2303 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2304 } 2305 } 2306 #ifndef HAVE_HOST_CONTROLLER_API 2307 // Vendor == CSR 2308 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2309 // TODO: track actual command 2310 command_completed = true; 2311 } 2312 2313 // Vendor == Toshiba 2314 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2315 // TODO: track actual command 2316 command_completed = true; 2317 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2318 hci_stack->num_cmd_packets = 1; 2319 } 2320 #endif 2321 2322 return command_completed; 2323 } 2324 2325 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2326 2327 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2328 2329 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2330 2331 #ifndef HAVE_HOST_CONTROLLER_API 2332 2333 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2334 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2335 // 2336 // HCI Reset 2337 // Timeout 100 ms 2338 // HCI Reset 2339 // Command Complete Reset 2340 // HCI Read Local Version Information 2341 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2342 // hang... 2343 // 2344 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2345 if (!command_completed 2346 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2347 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2348 2349 uint16_t opcode = little_endian_read_16(packet,3); 2350 if (opcode == hci_reset.opcode){ 2351 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2352 return; 2353 } 2354 } 2355 2356 // CSR & H5 2357 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2358 if (!command_completed 2359 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2360 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2361 2362 uint16_t opcode = little_endian_read_16(packet,3); 2363 if (opcode == hci_reset.opcode){ 2364 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2365 return; 2366 } 2367 } 2368 2369 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2370 // fix: Correct substate and behave as command below 2371 if (command_completed){ 2372 switch (hci_stack->substate){ 2373 case HCI_INIT_SEND_RESET: 2374 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2375 break; 2376 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2377 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2378 break; 2379 default: 2380 break; 2381 } 2382 } 2383 2384 #endif 2385 2386 if (!command_completed) return; 2387 2388 bool need_baud_change = false; 2389 bool need_addr_change = false; 2390 2391 #ifndef HAVE_HOST_CONTROLLER_API 2392 need_baud_change = hci_stack->config 2393 && hci_stack->chipset 2394 && hci_stack->chipset->set_baudrate_command 2395 && hci_stack->hci_transport->set_baudrate 2396 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2397 2398 need_addr_change = hci_stack->custom_bd_addr_set 2399 && hci_stack->chipset 2400 && hci_stack->chipset->set_bd_addr_command; 2401 #endif 2402 2403 switch(hci_stack->substate){ 2404 2405 #ifndef HAVE_HOST_CONTROLLER_API 2406 case HCI_INIT_SEND_RESET: 2407 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2408 // fix: just correct substate and behave as command below 2409 2410 /* fall through */ 2411 #endif 2412 2413 case HCI_INIT_W4_SEND_RESET: 2414 btstack_run_loop_remove_timer(&hci_stack->timeout); 2415 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2416 return; 2417 2418 #ifndef HAVE_HOST_CONTROLLER_API 2419 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2420 // for STLC2500D, baud rate change already happened. 2421 // for others, baud rate gets changed now 2422 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2423 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2424 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2425 hci_stack->hci_transport->set_baudrate(baud_rate); 2426 } 2427 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2428 return; 2429 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2430 btstack_run_loop_remove_timer(&hci_stack->timeout); 2431 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2432 return; 2433 case HCI_INIT_W4_CUSTOM_INIT: 2434 // repeat custom init 2435 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2436 return; 2437 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2438 // repeat custom init 2439 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2440 return; 2441 #endif 2442 2443 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2444 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2445 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2446 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2447 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2448 return; 2449 } 2450 if (need_addr_change){ 2451 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2452 return; 2453 } 2454 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2455 return; 2456 #ifndef HAVE_HOST_CONTROLLER_API 2457 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2458 if (need_baud_change){ 2459 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2460 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2461 hci_stack->hci_transport->set_baudrate(baud_rate); 2462 } 2463 if (need_addr_change){ 2464 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2465 return; 2466 } 2467 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2468 return; 2469 case HCI_INIT_W4_SET_BD_ADDR: 2470 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2471 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2472 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2473 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2474 return; 2475 } 2476 // skipping st warm boot 2477 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2478 return; 2479 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2480 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2481 return; 2482 #endif 2483 2484 case HCI_INIT_DONE: 2485 // set state if we came here by fall through 2486 hci_stack->substate = HCI_INIT_DONE; 2487 return; 2488 2489 default: 2490 break; 2491 } 2492 hci_initializing_next_state(); 2493 } 2494 2495 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2496 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2497 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2498 // check if we have been aware of the HCI connection 2499 switch (conn->state){ 2500 case SENT_CREATE_CONNECTION: 2501 case RECEIVED_CONNECTION_REQUEST: 2502 case ACCEPTED_CONNECTION_REQUEST: 2503 break; 2504 default: 2505 return; 2506 } 2507 2508 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2509 bd_addr_t bd_address; 2510 (void)memcpy(&bd_address, conn->address, 6); 2511 2512 #ifdef ENABLE_CLASSIC 2513 // cache needed data 2514 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2515 #endif 2516 2517 // connection failed, remove entry 2518 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2519 btstack_memory_hci_connection_free( conn ); 2520 2521 #ifdef ENABLE_CLASSIC 2522 // notify client if dedicated bonding 2523 if (notify_dedicated_bonding_failed){ 2524 log_info("hci notify_dedicated_bonding_failed"); 2525 hci_emit_dedicated_bonding_result(bd_address, status); 2526 } 2527 2528 // if authentication error, also delete link key 2529 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2530 gap_drop_link_key_for_bd_addr(bd_address); 2531 } 2532 #else 2533 UNUSED(status); 2534 #endif 2535 } 2536 2537 #ifdef ENABLE_CLASSIC 2538 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2539 // SSP Controller 2540 if (features[6] & (1 << 3)){ 2541 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2542 } 2543 // eSCO 2544 if (features[3] & (1<<7)){ 2545 conn->remote_supported_features[0] |= 1; 2546 } 2547 // Extended features 2548 if (features[7] & (1<<7)){ 2549 conn->remote_supported_features[0] |= 2; 2550 } 2551 // SCO packet types 2552 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2553 } 2554 2555 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2556 // SSP Host 2557 if (features[0] & (1 << 0)){ 2558 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2559 } 2560 // SC Host 2561 if (features[0] & (1 << 3)){ 2562 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2563 } 2564 } 2565 2566 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2567 // SC Controller 2568 if (features[1] & (1 << 0)){ 2569 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2570 } 2571 } 2572 2573 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2574 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2575 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2576 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2577 if (conn->bonding_flags & BONDING_DEDICATED){ 2578 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2579 } 2580 } 2581 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2582 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2583 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2584 } 2585 2586 #endif 2587 2588 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2589 // handle BT initialization 2590 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2591 hci_initializing_event_handler(packet, size); 2592 } 2593 2594 // help with BT sleep 2595 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2596 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2597 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2598 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2599 hci_initializing_next_state(); 2600 } 2601 } 2602 2603 #ifdef ENABLE_CLASSIC 2604 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2605 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2606 conn->requested_security_level = LEVEL_0; 2607 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2608 hci_emit_security_level(conn->con_handle, security_level); 2609 2610 // dedicated bonding 2611 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2612 conn->bonding_flags &= ~BONDING_DEDICATED; 2613 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2614 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2615 // emit dedicated bonding complete, don't disconnect 2616 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2617 #else 2618 // request disconnect, event is emitted after disconnect 2619 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2620 #endif 2621 } 2622 } 2623 2624 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2625 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2626 conn->encryption_key_size = encryption_key_size; 2627 2628 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2629 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2630 hci_handle_mutual_authentication_completed(conn); 2631 } else { 2632 // otherwise trigger remote feature request and send authentication request 2633 hci_trigger_remote_features_for_connection(conn); 2634 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2635 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2636 } 2637 } 2638 } 2639 #endif 2640 2641 static void hci_store_local_supported_commands(const uint8_t * packet){ 2642 // create mapping table 2643 #define X(name, offset, bit) { offset, bit }, 2644 static struct { 2645 uint8_t byte_offset; 2646 uint8_t bit_position; 2647 } supported_hci_commands_map [] = { 2648 SUPPORTED_HCI_COMMANDS 2649 }; 2650 #undef X 2651 2652 // create names for debug purposes 2653 #ifdef ENABLE_LOG_DEBUG 2654 #define X(name, offset, bit) #name, 2655 static const char * command_names[] = { 2656 SUPPORTED_HCI_COMMANDS 2657 }; 2658 #undef X 2659 #endif 2660 2661 hci_stack->local_supported_commands = 0; 2662 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2663 uint16_t i; 2664 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2665 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2666 #ifdef ENABLE_LOG_DEBUG 2667 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); 2668 #else 2669 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2670 #endif 2671 hci_stack->local_supported_commands |= (1LU << i); 2672 } 2673 } 2674 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2675 } 2676 2677 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2678 UNUSED(size); 2679 2680 uint16_t manufacturer; 2681 #ifdef ENABLE_CLASSIC 2682 hci_con_handle_t handle; 2683 hci_connection_t * conn; 2684 #endif 2685 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2686 uint8_t status; 2687 #endif 2688 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2689 le_audio_cig_t * cig; 2690 #endif 2691 2692 // get num cmd packets - limit to 1 to reduce complexity 2693 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2694 2695 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2696 switch (opcode){ 2697 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2698 if (packet[5]) break; 2699 // terminate, name 248 chars 2700 packet[6+248] = 0; 2701 log_info("local name: %s", &packet[6]); 2702 break; 2703 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2704 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2705 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2706 uint16_t acl_len = little_endian_read_16(packet, 6); 2707 uint16_t sco_len = packet[8]; 2708 2709 // determine usable ACL/SCO payload size 2710 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2711 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2712 2713 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2714 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2715 2716 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2717 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2718 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2719 } 2720 break; 2721 case HCI_OPCODE_HCI_READ_RSSI: 2722 if (packet[5] == ERROR_CODE_SUCCESS){ 2723 uint8_t event[5]; 2724 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2725 event[1] = 3; 2726 (void)memcpy(&event[2], &packet[6], 3); 2727 hci_emit_event(event, sizeof(event), 1); 2728 } 2729 break; 2730 #ifdef ENABLE_BLE 2731 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2732 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2733 hci_stack->le_iso_packets_total_num = packet[11]; 2734 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2735 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2736 2737 /* fall through */ 2738 2739 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2740 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2741 hci_stack->le_acl_packets_total_num = packet[8]; 2742 // determine usable ACL payload size 2743 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2744 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2745 } 2746 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); 2747 break; 2748 #endif 2749 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2750 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2751 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2752 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2753 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); 2754 break; 2755 #endif 2756 #ifdef ENABLE_LE_CENTRAL 2757 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2758 hci_stack->le_whitelist_capacity = packet[6]; 2759 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2760 break; 2761 #endif 2762 #ifdef ENABLE_LE_PERIPHERAL 2763 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2764 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2765 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2766 break; 2767 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2768 if (hci_stack->le_advertising_set_in_current_command != 0) { 2769 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2770 hci_stack->le_advertising_set_in_current_command = 0; 2771 if (advertising_set == NULL) break; 2772 uint8_t adv_status = packet[6]; 2773 uint8_t tx_power = packet[7]; 2774 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 }; 2775 if (adv_status == 0){ 2776 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2777 } 2778 hci_emit_event(event, sizeof(event), 1); 2779 } 2780 break; 2781 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2782 if (hci_stack->le_advertising_set_in_current_command != 0) { 2783 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2784 hci_stack->le_advertising_set_in_current_command = 0; 2785 if (advertising_set == NULL) break; 2786 uint8_t adv_status = packet[5]; 2787 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2788 if (adv_status == 0){ 2789 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2790 } 2791 hci_emit_event(event, sizeof(event), 1); 2792 } 2793 break; 2794 #endif 2795 #endif 2796 case HCI_OPCODE_HCI_READ_BD_ADDR: 2797 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2798 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)); 2799 #ifdef ENABLE_CLASSIC 2800 if (hci_stack->link_key_db){ 2801 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2802 } 2803 #endif 2804 break; 2805 #ifdef ENABLE_CLASSIC 2806 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2807 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2808 break; 2809 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2810 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2811 if (status == ERROR_CODE_SUCCESS) { 2812 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2813 } else { 2814 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2815 } 2816 break; 2817 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2818 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2819 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2820 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2821 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2822 hci_emit_event(event, sizeof(event), 1); 2823 } 2824 break; 2825 #endif 2826 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2827 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2828 2829 #ifdef ENABLE_CLASSIC 2830 // determine usable ACL packet types based on host buffer size and supported features 2831 hci_stack->usable_packet_types_acl = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2832 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2833 // determine usable SCO packet types based on supported features 2834 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2835 &hci_stack->local_supported_features[0]); 2836 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2837 #endif 2838 // Classic/LE 2839 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2840 break; 2841 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2842 manufacturer = little_endian_read_16(packet, 10); 2843 // map Cypress & Infineon to Broadcom 2844 switch (manufacturer){ 2845 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2846 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2847 log_info("Treat Cypress/Infineon as Broadcom"); 2848 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2849 little_endian_store_16(packet, 10, manufacturer); 2850 break; 2851 default: 2852 break; 2853 } 2854 hci_stack->manufacturer = manufacturer; 2855 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2856 break; 2857 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2858 hci_store_local_supported_commands(packet); 2859 break; 2860 #ifdef ENABLE_CLASSIC 2861 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2862 if (packet[5]) return; 2863 hci_stack->synchronous_flow_control_enabled = 1; 2864 break; 2865 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2866 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2867 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2868 conn = hci_connection_for_handle(handle); 2869 if (conn != NULL) { 2870 uint8_t key_size = 0; 2871 if (status == 0){ 2872 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2873 log_info("Handle %04x key Size: %u", handle, key_size); 2874 } else { 2875 key_size = 1; 2876 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2877 } 2878 hci_handle_read_encryption_key_size_complete(conn, key_size); 2879 } 2880 break; 2881 // assert pairing complete event is emitted. 2882 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2883 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2884 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2885 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2886 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2887 // lookup connection by gap pairing addr 2888 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2889 if (conn == NULL) break; 2890 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2891 break; 2892 2893 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2894 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2895 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2896 uint8_t event[67]; 2897 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2898 event[1] = 65; 2899 (void)memset(&event[2], 0, 65); 2900 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2901 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2902 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2903 event[2] = 3; 2904 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2905 } else { 2906 event[2] = 1; 2907 } 2908 } 2909 hci_emit_event(event, sizeof(event), 0); 2910 break; 2911 } 2912 2913 // note: only needed if user does not provide OOB data 2914 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2915 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2916 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2917 if (conn == NULL) break; 2918 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2919 break; 2920 #endif 2921 #endif 2922 #ifdef ENABLE_BLE 2923 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2924 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2925 // lookup CIG 2926 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2927 if (cig != NULL){ 2928 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2929 uint8_t i = 0; 2930 if (status == ERROR_CODE_SUCCESS){ 2931 // assign CIS handles to pre-allocated CIS 2932 btstack_linked_list_iterator_t it; 2933 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2934 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2935 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2936 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2937 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2938 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2939 iso_stream->cis_handle = cis_handle; 2940 cig->cis_con_handles[i] = cis_handle; 2941 i++; 2942 } 2943 } 2944 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2945 hci_emit_cig_created(cig, status); 2946 } else { 2947 hci_emit_cig_created(cig, status); 2948 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2949 } 2950 } 2951 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2952 break; 2953 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2954 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2955 if (status != ERROR_CODE_SUCCESS){ 2956 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2957 } 2958 break; 2959 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2960 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2961 if (status != ERROR_CODE_SUCCESS){ 2962 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2963 } 2964 break; 2965 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2966 // lookup BIG by state 2967 btstack_linked_list_iterator_t it; 2968 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2969 while (btstack_linked_list_iterator_has_next(&it)) { 2970 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2971 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2972 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2973 if (status == ERROR_CODE_SUCCESS){ 2974 big->state_vars.next_bis++; 2975 if (big->state_vars.next_bis == big->num_bis){ 2976 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2977 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2978 } else { 2979 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2980 } 2981 } else { 2982 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2983 big->state_vars.status = status; 2984 } 2985 return; 2986 } 2987 } 2988 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2989 while (btstack_linked_list_iterator_has_next(&it)) { 2990 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2991 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2992 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2993 if (status == ERROR_CODE_SUCCESS){ 2994 big_sync->state_vars.next_bis++; 2995 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2996 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2997 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2998 } else { 2999 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3000 } 3001 } else { 3002 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3003 big_sync->state_vars.status = status; 3004 } 3005 return; 3006 } 3007 } 3008 // Lookup CIS via active group operation 3009 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3010 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3011 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3012 3013 // lookup CIS by state 3014 btstack_linked_list_iterator_t it; 3015 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3016 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 3017 while (btstack_linked_list_iterator_has_next(&it)){ 3018 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3019 handle = iso_stream->cis_handle; 3020 bool emit_cis_created = false; 3021 switch (iso_stream->state){ 3022 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3023 if (status != ERROR_CODE_SUCCESS){ 3024 emit_cis_created = true; 3025 break; 3026 } 3027 if (iso_stream->max_sdu_c_to_p > 0){ 3028 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3029 } else { 3030 emit_cis_created = true; 3031 } 3032 break; 3033 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3034 emit_cis_created = true; 3035 break; 3036 default: 3037 break; 3038 } 3039 if (emit_cis_created){ 3040 hci_cis_handle_created(iso_stream, status); 3041 } 3042 } 3043 } else { 3044 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3045 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3046 if (cig != NULL) { 3047 // emit cis created if all ISO Paths have been created 3048 // assume we are central 3049 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3050 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3051 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3052 // if outgoing has been setup, or incoming was setup but outgoing not required 3053 if ((cis_direction == 1) || (outgoing_needed == false)){ 3054 // lookup iso stream by cig/cis 3055 while (btstack_linked_list_iterator_has_next(&it)) { 3056 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3057 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3058 hci_cis_handle_created(iso_stream, status); 3059 } 3060 } 3061 } 3062 // next state 3063 cig->state_vars.next_cis++; 3064 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3065 } 3066 } 3067 } 3068 break; 3069 } 3070 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3071 // lookup BIG by state 3072 btstack_linked_list_iterator_t it; 3073 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3074 while (btstack_linked_list_iterator_has_next(&it)) { 3075 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3076 uint8_t big_handle = big_sync->big_handle; 3077 switch (big_sync->state){ 3078 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3079 btstack_linked_list_iterator_remove(&it); 3080 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3081 return; 3082 default: 3083 btstack_linked_list_iterator_remove(&it); 3084 hci_emit_big_sync_stopped(big_handle); 3085 return; 3086 } 3087 } 3088 break; 3089 } 3090 #endif 3091 #endif 3092 default: 3093 break; 3094 } 3095 } 3096 3097 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3098 UNUSED(size); 3099 3100 // get num cmd packets - limit to 1 to reduce complexity 3101 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3102 3103 // get opcode and command status 3104 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3105 3106 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3107 uint8_t status = hci_event_command_status_get_status(packet); 3108 #endif 3109 3110 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3111 bd_addr_type_t addr_type; 3112 bd_addr_t addr; 3113 #endif 3114 3115 switch (opcode){ 3116 #ifdef ENABLE_CLASSIC 3117 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3118 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3119 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3120 #endif 3121 #ifdef ENABLE_LE_CENTRAL 3122 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3123 #endif 3124 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3125 addr_type = hci_stack->outgoing_addr_type; 3126 memcpy(addr, hci_stack->outgoing_addr, 6); 3127 3128 // reset outgoing address info 3129 memset(hci_stack->outgoing_addr, 0, 6); 3130 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3131 3132 // on error 3133 if (status != ERROR_CODE_SUCCESS){ 3134 #ifdef ENABLE_LE_CENTRAL 3135 if (hci_is_le_connection_type(addr_type)){ 3136 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3137 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3138 } 3139 #endif 3140 // error => outgoing connection failed 3141 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3142 if (conn != NULL){ 3143 hci_handle_connection_failed(conn, status); 3144 } 3145 } 3146 break; 3147 #endif 3148 #ifdef ENABLE_CLASSIC 3149 case HCI_OPCODE_HCI_INQUIRY: 3150 if (status == ERROR_CODE_SUCCESS) { 3151 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3152 } else { 3153 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3154 } 3155 break; 3156 #endif 3157 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3158 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3159 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3160 if (status == ERROR_CODE_SUCCESS){ 3161 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3162 } else { 3163 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3164 } 3165 break; 3166 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3167 default: 3168 break; 3169 } 3170 } 3171 3172 #ifdef ENABLE_BLE 3173 static void event_handle_le_connection_complete(const uint8_t * packet){ 3174 bd_addr_t addr; 3175 bd_addr_type_t addr_type; 3176 hci_connection_t * conn; 3177 3178 // read fields 3179 uint8_t status = packet[3]; 3180 hci_role_t role = (hci_role_t) packet[6]; 3181 3182 // support different connection complete events 3183 uint16_t conn_interval; 3184 switch (packet[2]){ 3185 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3186 conn_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3187 break; 3188 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3189 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3190 conn_interval = hci_subevent_le_enhanced_connection_complete_v1_get_conn_interval(packet); 3191 break; 3192 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3193 conn_interval = hci_subevent_le_enhanced_connection_complete_v2_get_conn_interval(packet); 3194 break; 3195 #endif 3196 default: 3197 btstack_unreachable(); 3198 return; 3199 } 3200 3201 // Connection management 3202 reverse_bd_addr(&packet[8], addr); 3203 addr_type = (bd_addr_type_t)packet[7]; 3204 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3205 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3206 3207 #ifdef ENABLE_LE_CENTRAL 3208 // handle error: error is reported only to the initiator -> outgoing connection 3209 if (status){ 3210 3211 // handle cancelled outgoing connection 3212 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3213 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3214 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3215 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3216 // reset state 3217 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3218 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3219 // get outgoing connection conn struct for direct connect 3220 conn = gap_get_outgoing_connection(); 3221 } 3222 3223 // outgoing le connection establishment is done 3224 if (conn){ 3225 // remove entry 3226 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3227 btstack_memory_hci_connection_free( conn ); 3228 } 3229 return; 3230 } 3231 #endif 3232 3233 // on success, both hosts receive connection complete event 3234 if (role == HCI_ROLE_MASTER){ 3235 #ifdef ENABLE_LE_CENTRAL 3236 // if we're master on an le connection, it was an outgoing connection and we're done with it 3237 // note: no hci_connection_t object exists yet for connect with whitelist 3238 if (hci_is_le_connection_type(addr_type)){ 3239 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3240 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3241 } 3242 #endif 3243 } else { 3244 #ifdef ENABLE_LE_PERIPHERAL 3245 // if we're slave, it was an incoming connection, advertisements have stopped 3246 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3247 #endif 3248 } 3249 3250 // LE connections are auto-accepted, so just create a connection if there isn't one already 3251 if (!conn){ 3252 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3253 } 3254 3255 // no memory, sorry. 3256 if (!conn){ 3257 return; 3258 } 3259 3260 conn->state = OPEN; 3261 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3262 conn->le_connection_interval = conn_interval; 3263 3264 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3265 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3266 3267 #ifdef ENABLE_LE_PERIPHERAL 3268 if (role == HCI_ROLE_SLAVE){ 3269 hci_update_advertisements_enabled_for_current_roles(); 3270 } 3271 #endif 3272 3273 // init unenhanced att bearer mtu 3274 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3275 conn->att_connection.mtu_exchanged = false; 3276 3277 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3278 3279 // restart timer 3280 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3281 // btstack_run_loop_add_timer(&conn->timeout); 3282 3283 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3284 3285 hci_emit_nr_connections_changed(); 3286 } 3287 #endif 3288 3289 #ifdef ENABLE_CLASSIC 3290 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){ 3291 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3292 // LEVEL_4 is tested by l2cap 3293 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3294 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3295 if (level >= LEVEL_3){ 3296 // MITM not possible without keyboard or display 3297 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3298 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3299 3300 // MITM possible if one side has keyboard and the other has keyboard or display 3301 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3302 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3303 3304 // MITM not possible if one side has only display and other side has no keyboard 3305 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3306 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3307 } 3308 // LEVEL 2 requires SSP, which is a given 3309 return true; 3310 } 3311 3312 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3313 // get requested security level 3314 gap_security_level_t requested_security_level = conn->requested_security_level; 3315 if (hci_stack->gap_secure_connections_only_mode){ 3316 requested_security_level = LEVEL_4; 3317 } 3318 3319 // assess security: LEVEL 4 requires SC 3320 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3321 if ((requested_security_level == LEVEL_4) && 3322 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3323 !hci_remote_sc_enabled(conn)){ 3324 log_info("Level 4 required, but SC not supported -> abort"); 3325 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3326 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3327 return; 3328 } 3329 3330 // assess security based on io capabilities 3331 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3332 // responder: fully validate io caps of both sides as well as OOB data 3333 bool security_possible = false; 3334 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3335 3336 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3337 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3338 // so we merge the OOB data availability 3339 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3340 if (conn->classic_oob_c_192 != NULL){ 3341 have_oob_data |= 1; 3342 } 3343 if (conn->classic_oob_c_256 != NULL){ 3344 have_oob_data |= 2; 3345 } 3346 // for up to Level 3, either P-192 as well as P-256 will do 3347 // 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 3348 // if remote does not SC, we should not receive P-256 data either 3349 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3350 security_possible = true; 3351 } 3352 // for Level 4, P-256 is needed 3353 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3354 security_possible = true; 3355 } 3356 #endif 3357 3358 if (security_possible == false){ 3359 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3360 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3361 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3362 return; 3363 } 3364 } else { 3365 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3366 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3367 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3368 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3369 log_info("Level 3+ required, but no input/output -> abort"); 3370 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3371 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3372 return; 3373 } 3374 #endif 3375 #endif 3376 } 3377 3378 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3379 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3380 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3381 } else { 3382 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3383 } 3384 #endif 3385 } 3386 3387 #endif 3388 3389 static void event_handler(uint8_t *packet, uint16_t size){ 3390 3391 uint16_t event_length = packet[1]; 3392 3393 // assert packet is complete 3394 if (size != (event_length + 2u)){ 3395 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3396 return; 3397 } 3398 3399 hci_con_handle_t handle; 3400 hci_connection_t * conn; 3401 int i; 3402 3403 #ifdef ENABLE_CLASSIC 3404 hci_link_type_t link_type; 3405 bd_addr_t addr; 3406 bd_addr_type_t addr_type; 3407 #endif 3408 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3409 hci_iso_stream_t * iso_stream; 3410 le_audio_big_t * big; 3411 le_audio_big_sync_t * big_sync; 3412 #endif 3413 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3414 btstack_linked_list_iterator_t it; 3415 #endif 3416 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3417 uint8_t advertising_handle; 3418 #endif 3419 3420 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3421 3422 switch (hci_event_packet_get_type(packet)) { 3423 3424 case HCI_EVENT_COMMAND_COMPLETE: 3425 handle_command_complete_event(packet, size); 3426 break; 3427 3428 case HCI_EVENT_COMMAND_STATUS: 3429 handle_command_status_event(packet, size); 3430 break; 3431 3432 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3433 if (size < 3) return; 3434 uint16_t num_handles = packet[2]; 3435 if (size != (3u + num_handles * 4u)) return; 3436 #ifdef ENABLE_CLASSIC 3437 bool notify_sco = false; 3438 #endif 3439 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3440 bool notify_iso = false; 3441 #endif 3442 uint16_t offset = 3; 3443 for (i=0; i<num_handles;i++){ 3444 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3445 offset += 2u; 3446 uint16_t num_packets = little_endian_read_16(packet, offset); 3447 offset += 2u; 3448 3449 conn = hci_connection_for_handle(handle); 3450 if (conn != NULL) { 3451 3452 if (conn->num_packets_sent >= num_packets) { 3453 conn->num_packets_sent -= num_packets; 3454 } else { 3455 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3456 conn->num_packets_sent = 0; 3457 } 3458 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3459 #ifdef ENABLE_CLASSIC 3460 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3461 notify_sco = true; 3462 } 3463 #endif 3464 } 3465 3466 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3467 hci_controller_dump_packets(); 3468 #endif 3469 3470 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3471 if (conn == NULL){ 3472 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3473 if (iso_stream != NULL){ 3474 if (iso_stream->num_packets_sent >= num_packets) { 3475 iso_stream->num_packets_sent -= num_packets; 3476 } else { 3477 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3478 iso_stream->num_packets_sent = 0; 3479 } 3480 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3481 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3482 if (big != NULL){ 3483 big->num_completed_timestamp_current_valid = true; 3484 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3485 } 3486 } 3487 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3488 num_packets, handle, iso_stream->num_packets_sent); 3489 notify_iso = true; 3490 } 3491 } 3492 #endif 3493 } 3494 3495 #ifdef ENABLE_CLASSIC 3496 if (notify_sco){ 3497 hci_notify_if_sco_can_send_now(); 3498 } 3499 #endif 3500 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3501 if (notify_iso){ 3502 hci_iso_notify_can_send_now(); 3503 } 3504 #endif 3505 break; 3506 } 3507 3508 #ifdef ENABLE_CLASSIC 3509 case HCI_EVENT_FLUSH_OCCURRED: 3510 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3511 handle = hci_event_flush_occurred_get_handle(packet); 3512 conn = hci_connection_for_handle(handle); 3513 if (conn) { 3514 log_info("Flush occurred, disconnect 0x%04x", handle); 3515 conn->state = SEND_DISCONNECT; 3516 } 3517 break; 3518 3519 case HCI_EVENT_INQUIRY_COMPLETE: 3520 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3521 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3522 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3523 hci_emit_event(event, sizeof(event), 1); 3524 } 3525 break; 3526 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3527 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3528 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3529 } 3530 break; 3531 case HCI_EVENT_CONNECTION_REQUEST: 3532 reverse_bd_addr(&packet[2], addr); 3533 link_type = (hci_link_type_t) packet[11]; 3534 3535 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3536 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3537 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3538 bd_addr_copy(hci_stack->decline_addr, addr); 3539 break; 3540 } 3541 3542 if (hci_stack->gap_classic_accept_callback != NULL){ 3543 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3544 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3545 bd_addr_copy(hci_stack->decline_addr, addr); 3546 break; 3547 } 3548 } 3549 3550 // TODO: eval COD 8-10 3551 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3552 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3553 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3554 if (!conn) { 3555 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3556 } 3557 if (!conn) { 3558 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3559 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3560 bd_addr_copy(hci_stack->decline_addr, addr); 3561 hci_run(); 3562 // avoid event to higher layer 3563 return; 3564 } 3565 conn->state = RECEIVED_CONNECTION_REQUEST; 3566 // store info about eSCO 3567 if (link_type == HCI_LINK_TYPE_ESCO){ 3568 conn->remote_supported_features[0] |= 1; 3569 } 3570 hci_run(); 3571 break; 3572 3573 case HCI_EVENT_CONNECTION_COMPLETE: 3574 // Connection management 3575 reverse_bd_addr(&packet[5], addr); 3576 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3577 addr_type = BD_ADDR_TYPE_ACL; 3578 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3579 if (conn) { 3580 switch (conn->state){ 3581 // expected states 3582 case ACCEPTED_CONNECTION_REQUEST: 3583 case SENT_CREATE_CONNECTION: 3584 break; 3585 // unexpected state -> ignore 3586 default: 3587 // don't forward event to app 3588 return; 3589 } 3590 if (!packet[2]){ 3591 conn->state = OPEN; 3592 conn->con_handle = little_endian_read_16(packet, 3); 3593 3594 // trigger write supervision timeout if we're master 3595 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3596 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3597 } 3598 3599 // trigger write automatic flush timeout 3600 if (hci_stack->automatic_flush_timeout != 0){ 3601 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3602 } 3603 3604 // restart timer 3605 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3606 btstack_run_loop_add_timer(&conn->timeout); 3607 3608 // trigger remote features for dedicated bonding 3609 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3610 hci_trigger_remote_features_for_connection(conn); 3611 } 3612 3613 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3614 3615 hci_emit_nr_connections_changed(); 3616 } else { 3617 // connection failed 3618 hci_handle_connection_failed(conn, packet[2]); 3619 } 3620 } 3621 break; 3622 3623 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3624 reverse_bd_addr(&packet[5], addr); 3625 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3626 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3627 btstack_assert(conn != NULL); 3628 3629 if (packet[2] != ERROR_CODE_SUCCESS){ 3630 // connection failed, remove entry 3631 hci_handle_connection_failed(conn, packet[2]); 3632 break; 3633 } 3634 3635 conn->state = OPEN; 3636 conn->con_handle = little_endian_read_16(packet, 3); 3637 3638 #ifdef ENABLE_SCO_OVER_HCI 3639 // update SCO 3640 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3641 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3642 } 3643 // trigger can send now 3644 if (hci_have_usb_transport()){ 3645 hci_stack->sco_can_send_now = true; 3646 } 3647 #endif 3648 #ifdef HAVE_SCO_TRANSPORT 3649 // configure sco transport 3650 if (hci_stack->sco_transport != NULL){ 3651 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3652 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3653 } 3654 #endif 3655 break; 3656 3657 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3658 handle = little_endian_read_16(packet, 3); 3659 conn = hci_connection_for_handle(handle); 3660 if (!conn) break; 3661 if (!packet[2]){ 3662 const uint8_t * features = &packet[5]; 3663 hci_handle_remote_features_page_0(conn, features); 3664 3665 // read extended features if possible 3666 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3667 && ((conn->remote_supported_features[0] & 2) != 0)) { 3668 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3669 break; 3670 } 3671 } 3672 hci_handle_remote_features_received(conn); 3673 break; 3674 3675 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3676 handle = little_endian_read_16(packet, 3); 3677 conn = hci_connection_for_handle(handle); 3678 if (!conn) break; 3679 // status = ok, page = 1 3680 if (!packet[2]) { 3681 uint8_t page_number = packet[5]; 3682 uint8_t maximum_page_number = packet[6]; 3683 const uint8_t * features = &packet[7]; 3684 bool done = false; 3685 switch (page_number){ 3686 case 1: 3687 hci_handle_remote_features_page_1(conn, features); 3688 if (maximum_page_number >= 2){ 3689 // get Secure Connections (Controller) from Page 2 if available 3690 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3691 } else { 3692 // otherwise, assume SC (Controller) == SC (Host) 3693 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3694 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3695 } 3696 done = true; 3697 } 3698 break; 3699 case 2: 3700 hci_handle_remote_features_page_2(conn, features); 3701 done = true; 3702 break; 3703 default: 3704 break; 3705 } 3706 if (!done) break; 3707 } 3708 hci_handle_remote_features_received(conn); 3709 break; 3710 3711 case HCI_EVENT_LINK_KEY_REQUEST: 3712 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3713 hci_event_link_key_request_get_bd_addr(packet, addr); 3714 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3715 if (!conn) break; 3716 3717 // lookup link key in db if not cached 3718 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3719 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3720 } 3721 3722 // response sent by hci_run() 3723 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3724 #endif 3725 break; 3726 3727 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3728 hci_event_link_key_request_get_bd_addr(packet, addr); 3729 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3730 if (!conn) break; 3731 3732 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3733 3734 // CVE-2020-26555: ignore NULL link key 3735 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3736 if (btstack_is_null(&packet[8], 16)) break; 3737 3738 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3739 // Change Connection Encryption keeps link key type 3740 if (link_key_type != CHANGED_COMBINATION_KEY){ 3741 conn->link_key_type = link_key_type; 3742 } 3743 3744 // cache link key. link keys stored in little-endian format for legacy reasons 3745 memcpy(&conn->link_key, &packet[8], 16); 3746 3747 // only store link key: 3748 // - if bondable enabled 3749 if (hci_stack->bondable == false) break; 3750 // - if security level sufficient 3751 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3752 // - for SSP, also check if remote side requested bonding as well 3753 if (conn->link_key_type != COMBINATION_KEY){ 3754 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3755 if (!remote_bonding){ 3756 break; 3757 } 3758 } 3759 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3760 break; 3761 } 3762 3763 case HCI_EVENT_PIN_CODE_REQUEST: 3764 hci_event_pin_code_request_get_bd_addr(packet, addr); 3765 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3766 if (!conn) break; 3767 3768 hci_pairing_started(conn, false); 3769 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3770 if (!hci_stack->bondable ){ 3771 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3772 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3773 hci_run(); 3774 return; 3775 } 3776 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3777 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3778 log_info("Level 4 required, but SC not supported -> abort"); 3779 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3780 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3781 hci_run(); 3782 return; 3783 } 3784 break; 3785 3786 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3787 hci_event_io_capability_response_get_bd_addr(packet, addr); 3788 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3789 if (!conn) break; 3790 3791 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3792 hci_pairing_started(conn, true); 3793 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3794 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3795 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3796 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3797 #endif 3798 break; 3799 3800 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3801 hci_event_io_capability_response_get_bd_addr(packet, addr); 3802 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3803 if (!conn) break; 3804 3805 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3806 hci_connection_timestamp(conn); 3807 hci_pairing_started(conn, true); 3808 break; 3809 3810 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3811 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3812 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3813 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3814 if (!conn) break; 3815 3816 hci_connection_timestamp(conn); 3817 3818 hci_pairing_started(conn, true); 3819 3820 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3821 break; 3822 #endif 3823 3824 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3825 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3826 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3827 if (!conn) break; 3828 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3829 if (hci_stack->ssp_auto_accept){ 3830 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3831 }; 3832 } else { 3833 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3834 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3835 // don't forward event to app 3836 hci_run(); 3837 return; 3838 } 3839 break; 3840 3841 case HCI_EVENT_USER_PASSKEY_REQUEST: 3842 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3843 if (hci_stack->ssp_auto_accept){ 3844 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3845 }; 3846 break; 3847 3848 case HCI_EVENT_MODE_CHANGE: 3849 handle = hci_event_mode_change_get_handle(packet); 3850 conn = hci_connection_for_handle(handle); 3851 if (!conn) break; 3852 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3853 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3854 break; 3855 #endif 3856 3857 case HCI_EVENT_ENCRYPTION_CHANGE: 3858 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3859 handle = hci_event_encryption_change_get_connection_handle(packet); 3860 conn = hci_connection_for_handle(handle); 3861 if (!conn) break; 3862 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 3863 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3864 if (encryption_enabled){ 3865 if (hci_is_le_connection(conn)){ 3866 // For LE, we accept connection as encrypted 3867 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3868 } 3869 #ifdef ENABLE_CLASSIC 3870 else { 3871 3872 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3873 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3874 bool connected_uses_aes_ccm = encryption_enabled == 2; 3875 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3876 log_info("SC during pairing, but only E0 now -> abort"); 3877 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3878 break; 3879 } 3880 3881 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3882 if (connected_uses_aes_ccm){ 3883 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3884 } 3885 3886 #ifdef ENABLE_TESTING_SUPPORT 3887 // work around for issue with PTS dongle 3888 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3889 #endif 3890 // validate encryption key size 3891 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3892 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3893 // already got encryption key size 3894 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3895 } else { 3896 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3897 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3898 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3899 } else { 3900 // if not, pretend everything is perfect 3901 hci_handle_read_encryption_key_size_complete(conn, 16); 3902 } 3903 } 3904 } 3905 #endif 3906 } else { 3907 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3908 } 3909 } else { 3910 uint8_t status = hci_event_encryption_change_get_status(packet); 3911 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3912 conn->bonding_flags &= ~BONDING_DEDICATED; 3913 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3914 conn->bonding_status = status; 3915 } 3916 } 3917 3918 break; 3919 3920 #ifdef ENABLE_CLASSIC 3921 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3922 handle = hci_event_authentication_complete_get_connection_handle(packet); 3923 conn = hci_connection_for_handle(handle); 3924 if (!conn) break; 3925 3926 // clear authentication active flag 3927 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3928 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3929 3930 // authenticated only if auth status == 0 3931 if (hci_event_authentication_complete_get_status(packet) == 0){ 3932 // authenticated 3933 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3934 3935 // If not already encrypted, start encryption 3936 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3937 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3938 break; 3939 } 3940 } 3941 3942 // emit updated security level (will be 0 if not authenticated) 3943 hci_handle_mutual_authentication_completed(conn); 3944 break; 3945 3946 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3947 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3948 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3949 if (!conn) break; 3950 3951 // treat successfully paired connection as authenticated 3952 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3953 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3954 } 3955 3956 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3957 break; 3958 #endif 3959 3960 // HCI_EVENT_DISCONNECTION_COMPLETE 3961 // has been split, to first notify stack before shutting connection down 3962 // see end of function, too. 3963 case HCI_EVENT_DISCONNECTION_COMPLETE: 3964 if (packet[2]) break; // status != 0 3965 handle = little_endian_read_16(packet, 3); 3966 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3967 if (hci_stack->acl_fragmentation_total_size > 0u) { 3968 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3969 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3970 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3971 hci_stack->acl_fragmentation_total_size = 0; 3972 hci_stack->acl_fragmentation_pos = 0; 3973 if (release_buffer){ 3974 hci_release_packet_buffer(); 3975 } 3976 } 3977 } 3978 3979 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3980 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3981 if (hci_stack->iso_fragmentation_total_size > 0u) { 3982 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3983 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3984 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3985 hci_stack->iso_fragmentation_total_size = 0; 3986 hci_stack->iso_fragmentation_pos = 0; 3987 if (release_buffer){ 3988 hci_release_packet_buffer(); 3989 } 3990 } 3991 } 3992 3993 // finalize iso stream for CIS handle 3994 iso_stream = hci_iso_stream_for_con_handle(handle); 3995 if (iso_stream != NULL){ 3996 hci_iso_stream_finalize(iso_stream); 3997 break; 3998 } 3999 4000 // finalize iso stream(s) for ACL handle 4001 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4002 while (btstack_linked_list_iterator_has_next(&it)){ 4003 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4004 if (iso_stream->acl_handle == handle ) { 4005 hci_iso_stream_finalize(iso_stream); 4006 } 4007 } 4008 #endif 4009 4010 conn = hci_connection_for_handle(handle); 4011 if (!conn) break; 4012 #ifdef ENABLE_CLASSIC 4013 // pairing failed if it was ongoing 4014 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4015 #endif 4016 4017 // emit dedicatd bonding event 4018 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4019 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4020 } 4021 4022 // mark connection for shutdown, stop timers, reset state 4023 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4024 hci_connection_stop_timer(conn); 4025 hci_connection_init(conn); 4026 4027 #ifdef ENABLE_BLE 4028 #ifdef ENABLE_LE_PERIPHERAL 4029 // re-enable advertisements for le connections if active 4030 if (hci_is_le_connection(conn)){ 4031 hci_update_advertisements_enabled_for_current_roles(); 4032 } 4033 #endif 4034 #endif 4035 break; 4036 4037 case HCI_EVENT_HARDWARE_ERROR: 4038 log_error("Hardware Error: 0x%02x", packet[2]); 4039 if (hci_stack->hardware_error_callback){ 4040 (*hci_stack->hardware_error_callback)(packet[2]); 4041 } else { 4042 // if no special requests, just reboot stack 4043 hci_power_control_off(); 4044 hci_power_control_on(); 4045 } 4046 break; 4047 4048 #ifdef ENABLE_CLASSIC 4049 case HCI_EVENT_ROLE_CHANGE: 4050 if (packet[2]) break; // status != 0 4051 reverse_bd_addr(&packet[3], addr); 4052 addr_type = BD_ADDR_TYPE_ACL; 4053 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4054 if (!conn) break; 4055 conn->role = (hci_role_t) packet[9]; 4056 break; 4057 #endif 4058 4059 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4060 // release packet buffer only for asynchronous transport and if there are not further fragments 4061 if (hci_transport_synchronous()) { 4062 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4063 return; // instead of break: to avoid re-entering hci_run() 4064 } 4065 hci_stack->acl_fragmentation_tx_active = 0; 4066 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4067 hci_stack->iso_fragmentation_tx_active = 0; 4068 if (hci_stack->iso_fragmentation_total_size) break; 4069 #endif 4070 if (hci_stack->acl_fragmentation_total_size) break; 4071 hci_release_packet_buffer(); 4072 4073 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4074 hci_iso_notify_can_send_now(); 4075 #endif 4076 // L2CAP receives this event via the hci_emit_event below 4077 4078 #ifdef ENABLE_CLASSIC 4079 // For SCO, we do the can_send_now_check here 4080 hci_notify_if_sco_can_send_now(); 4081 #endif 4082 break; 4083 4084 #ifdef ENABLE_CLASSIC 4085 case HCI_EVENT_SCO_CAN_SEND_NOW: 4086 // For SCO, we do the can_send_now_check here 4087 hci_stack->sco_can_send_now = true; 4088 hci_notify_if_sco_can_send_now(); 4089 return; 4090 4091 // explode inquriy results for easier consumption 4092 case HCI_EVENT_INQUIRY_RESULT: 4093 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4094 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4095 gap_inquiry_explode(packet, size); 4096 break; 4097 #endif 4098 4099 #ifdef ENABLE_BLE 4100 case HCI_EVENT_LE_META: 4101 switch (packet[2]){ 4102 #ifdef ENABLE_LE_CENTRAL 4103 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4104 if (!hci_stack->le_scanning_enabled) break; 4105 le_handle_advertisement_report(packet, size); 4106 break; 4107 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4108 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4109 if (!hci_stack->le_scanning_enabled) break; 4110 le_handle_extended_advertisement_report(packet, size); 4111 break; 4112 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4113 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4114 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4115 break; 4116 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4117 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4118 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4119 while (btstack_linked_list_iterator_has_next(&it)) { 4120 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4121 if (advertising_set->advertising_handle == advertising_handle){ 4122 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4123 } 4124 } 4125 break; 4126 #endif 4127 #endif 4128 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4129 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4130 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4131 event_handle_le_connection_complete(packet); 4132 break; 4133 4134 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4135 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4136 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4137 conn = hci_connection_for_handle(handle); 4138 if (!conn) break; 4139 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4140 break; 4141 4142 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4143 // connection 4144 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4145 conn = hci_connection_for_handle(handle); 4146 if (conn) { 4147 // read arguments 4148 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4149 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4150 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4151 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4152 4153 // validate against current connection parameter range 4154 le_connection_parameter_range_t existing_range; 4155 gap_get_connection_parameter_range(&existing_range); 4156 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4157 if (update_parameter){ 4158 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4159 conn->le_conn_interval_min = le_conn_interval_min; 4160 conn->le_conn_interval_max = le_conn_interval_max; 4161 conn->le_conn_latency = le_conn_latency; 4162 conn->le_supervision_timeout = le_supervision_timeout; 4163 } else { 4164 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4165 } 4166 } 4167 break; 4168 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4169 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4170 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4171 conn = hci_connection_for_handle(handle); 4172 if (conn) { 4173 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4174 } 4175 break; 4176 #endif 4177 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4178 case HCI_SUBEVENT_LE_CIS_REQUEST: 4179 // incoming CIS request, allocate iso stream object and cache metadata 4180 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4181 hci_subevent_le_cis_request_get_cig_id(packet), 4182 hci_subevent_le_cis_request_get_cis_id(packet)); 4183 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4184 if (iso_stream != NULL){ 4185 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4186 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4187 } 4188 break; 4189 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4190 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4191 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4192 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4193 iso_stream = hci_iso_stream_for_con_handle(handle); 4194 btstack_assert(iso_stream != NULL); 4195 // track SDU 4196 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4197 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4198 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4199 // CIS Accept by Peripheral 4200 if (status == ERROR_CODE_SUCCESS){ 4201 if (iso_stream->max_sdu_p_to_c > 0){ 4202 // we're peripheral and we will send data 4203 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4204 } else { 4205 // we're peripheral and we will only receive data 4206 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4207 } 4208 } else { 4209 hci_cis_handle_created(iso_stream, status); 4210 } 4211 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4212 } else { 4213 // CIG Setup by Central 4214 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4215 btstack_assert(cig != NULL); 4216 // update iso stream state 4217 if (status == ERROR_CODE_SUCCESS){ 4218 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4219 } else { 4220 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4221 } 4222 // update cig state 4223 uint8_t i; 4224 for (i=0;i<cig->num_cis;i++){ 4225 if (cig->cis_con_handles[i] == handle){ 4226 cig->cis_setup_active[i] = false; 4227 if (status == ERROR_CODE_SUCCESS){ 4228 cig->cis_established[i] = true; 4229 } else { 4230 hci_cis_handle_created(iso_stream, status); 4231 } 4232 } 4233 } 4234 4235 // trigger iso path setup if complete 4236 bool cis_setup_active = false; 4237 for (i=0;i<cig->num_cis;i++){ 4238 cis_setup_active |= cig->cis_setup_active[i]; 4239 } 4240 if (cis_setup_active == false){ 4241 cig->state_vars.next_cis = 0; 4242 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4243 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4244 } 4245 } 4246 } 4247 break; 4248 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4249 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4250 big = hci_big_for_handle(packet[4]); 4251 if (big != NULL){ 4252 uint8_t status = packet[3]; 4253 if (status == ERROR_CODE_SUCCESS){ 4254 // store bis_con_handles and trigger iso path setup 4255 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4256 uint8_t i; 4257 for (i=0;i<num_bis;i++){ 4258 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4259 big->bis_con_handles[i] = bis_handle; 4260 // assign bis handle 4261 btstack_linked_list_iterator_t it; 4262 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4263 while (btstack_linked_list_iterator_has_next(&it)){ 4264 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4265 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4266 (iso_stream->group_id == big->big_handle)){ 4267 iso_stream->cis_handle = bis_handle; 4268 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4269 break; 4270 } 4271 } 4272 } 4273 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4274 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4275 big->state_vars.next_bis = 0; 4276 } 4277 } else { 4278 // create BIG failed or has been stopped by us 4279 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4280 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4281 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4282 hci_emit_big_created(big, status); 4283 } else { 4284 hci_emit_big_terminated(big); 4285 } 4286 } 4287 } 4288 break; 4289 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4290 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4291 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4292 if (big != NULL){ 4293 // finalize associated ISO streams 4294 btstack_linked_list_iterator_t it; 4295 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4296 while (btstack_linked_list_iterator_has_next(&it)){ 4297 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4298 if (iso_stream->group_id == big->big_handle){ 4299 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4300 btstack_linked_list_iterator_remove(&it); 4301 btstack_memory_hci_iso_stream_free(iso_stream); 4302 } 4303 } 4304 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4305 switch (big->state){ 4306 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4307 hci_emit_big_created(big, big->state_vars.status); 4308 break; 4309 default: 4310 hci_emit_big_terminated(big); 4311 break; 4312 } 4313 } 4314 break; 4315 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4316 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4317 big_sync = hci_big_sync_for_handle(packet[4]); 4318 if (big_sync != NULL){ 4319 uint8_t status = packet[3]; 4320 uint8_t big_handle = packet[4]; 4321 if (status == ERROR_CODE_SUCCESS){ 4322 // store bis_con_handles and trigger iso path setup 4323 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4324 uint8_t i; 4325 for (i=0;i<num_bis;i++){ 4326 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4327 } 4328 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4329 // trigger iso path setup 4330 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4331 big_sync->state_vars.next_bis = 0; 4332 } 4333 } else { 4334 // create BIG Sync failed or has been stopped by us 4335 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4336 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4337 hci_emit_big_sync_created(big_sync, status); 4338 } else { 4339 hci_emit_big_sync_stopped(big_handle); 4340 } 4341 } 4342 } 4343 break; 4344 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4345 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4346 big_sync = hci_big_sync_for_handle(packet[4]); 4347 if (big_sync != NULL){ 4348 uint8_t big_handle = packet[4]; 4349 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4350 hci_emit_big_sync_stopped(big_handle); 4351 } 4352 break; 4353 #endif 4354 default: 4355 break; 4356 } 4357 break; 4358 #endif 4359 case HCI_EVENT_VENDOR_SPECIFIC: 4360 // Vendor specific commands often create vendor specific event instead of num completed packets 4361 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4362 switch (hci_stack->manufacturer){ 4363 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4364 hci_stack->num_cmd_packets = 1; 4365 break; 4366 default: 4367 break; 4368 } 4369 break; 4370 default: 4371 break; 4372 } 4373 4374 handle_event_for_current_stack_state(packet, size); 4375 4376 // notify upper stack 4377 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4378 4379 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4380 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4381 handle = little_endian_read_16(packet, 3); 4382 hci_connection_t * aConn = hci_connection_for_handle(handle); 4383 // discard connection if app did not trigger a reconnect in the event handler 4384 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4385 hci_shutdown_connection(aConn); 4386 } 4387 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4388 hci_controller_dump_packets(); 4389 #endif 4390 } 4391 4392 // execute main loop 4393 hci_run(); 4394 } 4395 4396 #ifdef ENABLE_CLASSIC 4397 4398 #ifdef ENABLE_SCO_OVER_HCI 4399 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4400 static void sco_schedule_tx(hci_connection_t * conn); 4401 4402 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4403 log_debug("SCO TX Timeout"); 4404 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4405 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4406 if (!conn) return; 4407 4408 // trigger send 4409 conn->sco_tx_ready = 1; 4410 // extra packet if CVSD but SCO buffer is too short 4411 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4412 conn->sco_tx_ready++; 4413 } 4414 hci_notify_if_sco_can_send_now(); 4415 } 4416 4417 4418 #define SCO_TX_AFTER_RX_MS (6) 4419 4420 static void sco_schedule_tx(hci_connection_t * conn){ 4421 4422 uint32_t now = btstack_run_loop_get_time_ms(); 4423 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4424 int time_delta_ms = sco_tx_ms - now; 4425 4426 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4427 4428 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4429 btstack_run_loop_remove_timer(timer); 4430 btstack_run_loop_set_timer(timer, time_delta_ms); 4431 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4432 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4433 btstack_run_loop_add_timer(timer); 4434 } 4435 #endif 4436 4437 static void sco_handler(uint8_t * packet, uint16_t size){ 4438 // lookup connection struct 4439 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4440 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4441 if (!conn) return; 4442 4443 #ifdef ENABLE_SCO_OVER_HCI 4444 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4445 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4446 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4447 packet[2] = 0x3c; 4448 memmove(&packet[3], &packet[23], 63); 4449 size = 63; 4450 } 4451 } 4452 4453 if (hci_have_usb_transport()){ 4454 // Nothing to do 4455 } else { 4456 // 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); 4457 if (hci_stack->synchronous_flow_control_enabled == 0){ 4458 uint32_t now = btstack_run_loop_get_time_ms(); 4459 4460 if (!conn->sco_rx_valid){ 4461 // ignore first 10 packets 4462 conn->sco_rx_count++; 4463 // log_debug("sco rx count %u", conn->sco_rx_count); 4464 if (conn->sco_rx_count == 10) { 4465 // use first timestamp as is and pretent it just started 4466 conn->sco_rx_ms = now; 4467 conn->sco_rx_valid = 1; 4468 conn->sco_rx_count = 0; 4469 sco_schedule_tx(conn); 4470 } 4471 } else { 4472 // track expected arrival timme 4473 conn->sco_rx_count++; 4474 conn->sco_rx_ms += 7; 4475 int delta = (int32_t) (now - conn->sco_rx_ms); 4476 if (delta > 0){ 4477 conn->sco_rx_ms++; 4478 } 4479 // log_debug("sco rx %u", conn->sco_rx_ms); 4480 sco_schedule_tx(conn); 4481 } 4482 } 4483 } 4484 #endif 4485 4486 // deliver to app 4487 if (hci_stack->sco_packet_handler) { 4488 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4489 } 4490 4491 #ifdef HAVE_SCO_TRANSPORT 4492 // We can send one packet for each received packet 4493 conn->sco_tx_ready++; 4494 hci_notify_if_sco_can_send_now(); 4495 #endif 4496 4497 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4498 conn->num_packets_completed++; 4499 hci_stack->host_completed_packets = 1; 4500 hci_run(); 4501 #endif 4502 } 4503 #endif 4504 4505 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4506 hci_dump_packet(packet_type, 1, packet, size); 4507 switch (packet_type) { 4508 case HCI_EVENT_PACKET: 4509 event_handler(packet, size); 4510 break; 4511 case HCI_ACL_DATA_PACKET: 4512 acl_handler(packet, size); 4513 break; 4514 #ifdef ENABLE_CLASSIC 4515 case HCI_SCO_DATA_PACKET: 4516 sco_handler(packet, size); 4517 break; 4518 #endif 4519 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4520 case HCI_ISO_DATA_PACKET: 4521 hci_iso_packet_handler(packet, size); 4522 break; 4523 #endif 4524 default: 4525 break; 4526 } 4527 } 4528 4529 /** 4530 * @brief Add event packet handler. 4531 */ 4532 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4533 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4534 } 4535 4536 /** 4537 * @brief Remove event packet handler. 4538 */ 4539 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4540 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4541 } 4542 4543 /** Register HCI packet handlers */ 4544 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4545 hci_stack->acl_packet_handler = handler; 4546 } 4547 4548 #ifdef ENABLE_CLASSIC 4549 /** 4550 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4551 */ 4552 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4553 hci_stack->sco_packet_handler = handler; 4554 } 4555 #endif 4556 4557 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4558 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4559 hci_stack->iso_packet_handler = handler; 4560 } 4561 #endif 4562 4563 static void hci_state_reset(void){ 4564 // no connections yet 4565 hci_stack->connections = NULL; 4566 4567 // keep discoverable/connectable as this has been requested by the client(s) 4568 // hci_stack->discoverable = 0; 4569 // hci_stack->connectable = 0; 4570 // hci_stack->bondable = 1; 4571 // hci_stack->own_addr_type = 0; 4572 4573 // buffer is free 4574 hci_stack->hci_packet_buffer_reserved = false; 4575 4576 // no pending cmds 4577 hci_stack->decline_reason = 0; 4578 4579 hci_stack->secure_connections_active = false; 4580 4581 #ifdef ENABLE_CLASSIC 4582 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4583 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4584 4585 hci_stack->gap_tasks_classic = 4586 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4587 GAP_TASK_SET_CLASS_OF_DEVICE | 4588 GAP_TASK_SET_LOCAL_NAME | 4589 GAP_TASK_SET_EIR_DATA | 4590 GAP_TASK_WRITE_SCAN_ENABLE | 4591 GAP_TASK_WRITE_PAGE_TIMEOUT; 4592 #endif 4593 4594 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4595 hci_stack->classic_read_local_oob_data = false; 4596 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4597 #endif 4598 4599 // LE 4600 #ifdef ENABLE_BLE 4601 memset(hci_stack->le_random_address, 0, 6); 4602 hci_stack->le_random_address_set = 0; 4603 #endif 4604 #ifdef ENABLE_LE_CENTRAL 4605 hci_stack->le_scanning_active = false; 4606 hci_stack->le_scanning_param_update = true; 4607 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4608 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4609 hci_stack->le_whitelist_capacity = 0; 4610 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4611 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4612 #endif 4613 #endif 4614 #ifdef ENABLE_LE_PERIPHERAL 4615 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4616 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4617 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4618 } 4619 if (hci_stack->le_advertisements_data != NULL){ 4620 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4621 } 4622 #endif 4623 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4624 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4625 #endif 4626 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4627 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4628 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4629 #endif 4630 } 4631 4632 #ifdef ENABLE_CLASSIC 4633 /** 4634 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4635 */ 4636 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4637 // store and open remote device db 4638 hci_stack->link_key_db = link_key_db; 4639 if (hci_stack->link_key_db) { 4640 hci_stack->link_key_db->open(); 4641 } 4642 } 4643 #endif 4644 4645 void hci_init(const hci_transport_t *transport, const void *config){ 4646 4647 #ifdef HAVE_MALLOC 4648 if (!hci_stack) { 4649 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4650 } 4651 #else 4652 hci_stack = &hci_stack_static; 4653 #endif 4654 memset(hci_stack, 0, sizeof(hci_stack_t)); 4655 4656 // reference to use transport layer implementation 4657 hci_stack->hci_transport = transport; 4658 4659 // reference to used config 4660 hci_stack->config = config; 4661 4662 // setup pointer for outgoing packet buffer 4663 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4664 4665 // max acl payload size defined in config.h 4666 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4667 4668 // register packet handlers with transport 4669 transport->register_packet_handler(&packet_handler); 4670 4671 hci_stack->state = HCI_STATE_OFF; 4672 4673 // class of device 4674 hci_stack->class_of_device = 0x007a020c; // Smartphone 4675 4676 // bondable by default 4677 hci_stack->bondable = 1; 4678 4679 #ifdef ENABLE_CLASSIC 4680 // classic name 4681 hci_stack->local_name = default_classic_name; 4682 4683 // Master slave policy 4684 hci_stack->master_slave_policy = 1; 4685 4686 // Allow Role Switch 4687 hci_stack->allow_role_switch = 1; 4688 4689 // Default / minimum security level = 2 4690 hci_stack->gap_security_level = LEVEL_2; 4691 4692 // Default Security Mode 4 4693 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4694 4695 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4696 hci_stack->gap_required_encyrption_key_size = 7; 4697 4698 // Link Supervision Timeout 4699 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4700 4701 #endif 4702 4703 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4704 hci_stack->ssp_enable = 1; 4705 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4706 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4707 hci_stack->ssp_auto_accept = 1; 4708 4709 // Secure Connections: enable (requires support from Controller) 4710 hci_stack->secure_connections_enable = true; 4711 4712 // voice setting - signed 16 bit pcm data with CVSD over the air 4713 hci_stack->sco_voice_setting = 0x60; 4714 4715 #ifdef ENABLE_BLE 4716 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4717 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4718 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4719 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4720 hci_stack->le_connection_latency = 4; // 4 4721 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4722 hci_stack->le_minimum_ce_length = 0; // 0 ms 4723 hci_stack->le_maximum_ce_length = 0; // 0 ms 4724 #endif 4725 4726 #ifdef ENABLE_LE_CENTRAL 4727 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4728 4729 // default LE Scanning 4730 hci_stack->le_scan_type = 0x01; // active 4731 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4732 hci_stack->le_scan_window = 0x30; // 30 ms 4733 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4734 #endif 4735 4736 #ifdef ENABLE_LE_PERIPHERAL 4737 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4738 4739 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4740 hci_stack->le_advertisements_interval_min = 0x0800; 4741 hci_stack->le_advertisements_interval_max = 0x0800; 4742 hci_stack->le_advertisements_type = 0; 4743 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4744 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4745 hci_stack->le_advertisements_channel_map = 0x07; 4746 hci_stack->le_advertisements_filter_policy = 0; 4747 #endif 4748 4749 // connection parameter range used to answer connection parameter update requests in l2cap 4750 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4751 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4752 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4753 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4754 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4755 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4756 4757 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4758 hci_stack->iso_packets_to_queue = 1; 4759 #endif 4760 4761 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4762 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4763 #endif 4764 4765 hci_state_reset(); 4766 } 4767 4768 void hci_deinit(void){ 4769 btstack_run_loop_remove_timer(&hci_stack->timeout); 4770 #ifdef HAVE_MALLOC 4771 if (hci_stack) { 4772 free(hci_stack); 4773 } 4774 #endif 4775 hci_stack = NULL; 4776 4777 #ifdef ENABLE_CLASSIC 4778 disable_l2cap_timeouts = 0; 4779 #endif 4780 } 4781 4782 /** 4783 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4784 */ 4785 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4786 hci_stack->chipset = chipset_driver; 4787 4788 // reset chipset driver - init is also called on power_up 4789 if (hci_stack->chipset && hci_stack->chipset->init){ 4790 hci_stack->chipset->init(hci_stack->config); 4791 } 4792 } 4793 4794 void hci_enable_custom_pre_init(void){ 4795 hci_stack->chipset_pre_init = true; 4796 } 4797 4798 /** 4799 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4800 */ 4801 void hci_set_control(const btstack_control_t *hardware_control){ 4802 // references to used control implementation 4803 hci_stack->control = hardware_control; 4804 // init with transport config 4805 hardware_control->init(hci_stack->config); 4806 } 4807 4808 static void hci_discard_connections(void){ 4809 btstack_linked_list_iterator_t it; 4810 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4811 while (btstack_linked_list_iterator_has_next(&it)){ 4812 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4813 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4814 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4815 hci_shutdown_connection(connection); 4816 } 4817 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4818 while (hci_stack->iso_streams != NULL){ 4819 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4820 } 4821 #endif 4822 } 4823 4824 void hci_close(void){ 4825 4826 #ifdef ENABLE_CLASSIC 4827 // close remote device db 4828 if (hci_stack->link_key_db) { 4829 hci_stack->link_key_db->close(); 4830 } 4831 #endif 4832 4833 hci_discard_connections(); 4834 4835 hci_power_control(HCI_POWER_OFF); 4836 4837 #ifdef HAVE_MALLOC 4838 free(hci_stack); 4839 #endif 4840 hci_stack = NULL; 4841 } 4842 4843 #ifdef HAVE_SCO_TRANSPORT 4844 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4845 hci_stack->sco_transport = sco_transport; 4846 sco_transport->register_packet_handler(&packet_handler); 4847 } 4848 #endif 4849 4850 #ifdef ENABLE_CLASSIC 4851 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4852 // validate ranage and set 4853 if (encryption_key_size < 7) return; 4854 if (encryption_key_size > 16) return; 4855 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4856 } 4857 4858 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4859 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4860 hci_stack->gap_security_mode = security_mode; 4861 return ERROR_CODE_SUCCESS; 4862 } else { 4863 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4864 } 4865 } 4866 4867 gap_security_mode_t gap_get_security_mode(void){ 4868 return hci_stack->gap_security_mode; 4869 } 4870 4871 void gap_set_security_level(gap_security_level_t security_level){ 4872 hci_stack->gap_security_level = security_level; 4873 } 4874 4875 gap_security_level_t gap_get_security_level(void){ 4876 if (hci_stack->gap_secure_connections_only_mode){ 4877 return LEVEL_4; 4878 } 4879 return hci_stack->gap_security_level; 4880 } 4881 4882 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4883 hci_stack->gap_minimal_service_security_level = security_level; 4884 } 4885 4886 void gap_set_secure_connections_only_mode(bool enable){ 4887 hci_stack->gap_secure_connections_only_mode = enable; 4888 } 4889 4890 bool gap_get_secure_connections_only_mode(void){ 4891 return hci_stack->gap_secure_connections_only_mode; 4892 } 4893 #endif 4894 4895 #ifdef ENABLE_CLASSIC 4896 void gap_set_class_of_device(uint32_t class_of_device){ 4897 hci_stack->class_of_device = class_of_device; 4898 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4899 hci_run(); 4900 } 4901 4902 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4903 hci_stack->default_link_policy_settings = default_link_policy_settings; 4904 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4905 hci_run(); 4906 } 4907 4908 void gap_set_allow_role_switch(bool allow_role_switch){ 4909 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4910 } 4911 4912 uint8_t hci_get_allow_role_switch(void){ 4913 return hci_stack->allow_role_switch; 4914 } 4915 4916 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4917 hci_stack->link_supervision_timeout = link_supervision_timeout; 4918 } 4919 4920 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4921 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4922 } 4923 4924 uint16_t hci_automatic_flush_timeout(void){ 4925 return hci_stack->automatic_flush_timeout; 4926 } 4927 4928 void hci_disable_l2cap_timeout_check(void){ 4929 disable_l2cap_timeouts = 1; 4930 } 4931 #endif 4932 4933 #ifndef HAVE_HOST_CONTROLLER_API 4934 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4935 void hci_set_bd_addr(bd_addr_t addr){ 4936 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4937 hci_stack->custom_bd_addr_set = 1; 4938 } 4939 #endif 4940 4941 // State-Module-Driver overview 4942 // state module low-level 4943 // HCI_STATE_OFF off close 4944 // HCI_STATE_INITIALIZING, on open 4945 // HCI_STATE_WORKING, on open 4946 // HCI_STATE_HALTING, on open 4947 // HCI_STATE_SLEEPING, off/sleep close 4948 // HCI_STATE_FALLING_ASLEEP on open 4949 4950 static int hci_power_control_on(void){ 4951 4952 // power on 4953 int err = 0; 4954 if (hci_stack->control && hci_stack->control->on){ 4955 err = (*hci_stack->control->on)(); 4956 } 4957 if (err){ 4958 log_error( "POWER_ON failed"); 4959 hci_emit_hci_open_failed(); 4960 return err; 4961 } 4962 4963 // int chipset driver 4964 if (hci_stack->chipset && hci_stack->chipset->init){ 4965 hci_stack->chipset->init(hci_stack->config); 4966 } 4967 4968 // init transport 4969 if (hci_stack->hci_transport->init){ 4970 hci_stack->hci_transport->init(hci_stack->config); 4971 } 4972 4973 // open transport 4974 err = hci_stack->hci_transport->open(); 4975 if (err){ 4976 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4977 if (hci_stack->control && hci_stack->control->off){ 4978 (*hci_stack->control->off)(); 4979 } 4980 hci_emit_hci_open_failed(); 4981 return err; 4982 } 4983 return 0; 4984 } 4985 4986 static void hci_power_control_off(void){ 4987 4988 log_info("hci_power_control_off"); 4989 4990 // close low-level device 4991 hci_stack->hci_transport->close(); 4992 4993 log_info("hci_power_control_off - hci_transport closed"); 4994 4995 // power off 4996 if (hci_stack->control && hci_stack->control->off){ 4997 (*hci_stack->control->off)(); 4998 } 4999 5000 log_info("hci_power_control_off - control closed"); 5001 5002 hci_stack->state = HCI_STATE_OFF; 5003 } 5004 5005 static void hci_power_control_sleep(void){ 5006 5007 log_info("hci_power_control_sleep"); 5008 5009 #if 0 5010 // don't close serial port during sleep 5011 5012 // close low-level device 5013 hci_stack->hci_transport->close(hci_stack->config); 5014 #endif 5015 5016 // sleep mode 5017 if (hci_stack->control && hci_stack->control->sleep){ 5018 (*hci_stack->control->sleep)(); 5019 } 5020 5021 hci_stack->state = HCI_STATE_SLEEPING; 5022 } 5023 5024 static int hci_power_control_wake(void){ 5025 5026 log_info("hci_power_control_wake"); 5027 5028 // wake on 5029 if (hci_stack->control && hci_stack->control->wake){ 5030 (*hci_stack->control->wake)(); 5031 } 5032 5033 #if 0 5034 // open low-level device 5035 int err = hci_stack->hci_transport->open(hci_stack->config); 5036 if (err){ 5037 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5038 if (hci_stack->control && hci_stack->control->off){ 5039 (*hci_stack->control->off)(); 5040 } 5041 hci_emit_hci_open_failed(); 5042 return err; 5043 } 5044 #endif 5045 5046 return 0; 5047 } 5048 5049 static void hci_power_enter_initializing_state(void){ 5050 // set up state machine 5051 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5052 hci_stack->hci_packet_buffer_reserved = false; 5053 hci_stack->state = HCI_STATE_INITIALIZING; 5054 5055 #ifndef HAVE_HOST_CONTROLLER_API 5056 if (hci_stack->chipset_pre_init) { 5057 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5058 } else 5059 #endif 5060 { 5061 hci_stack->substate = HCI_INIT_SEND_RESET; 5062 } 5063 } 5064 5065 static void hci_power_enter_halting_state(void){ 5066 #ifdef ENABLE_BLE 5067 // drop entries scheduled for removal, mark others for re-adding 5068 btstack_linked_list_iterator_t it; 5069 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5070 while (btstack_linked_list_iterator_has_next(&it)){ 5071 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5072 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5073 btstack_linked_list_iterator_remove(&it); 5074 btstack_memory_whitelist_entry_free(entry); 5075 } else { 5076 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5077 } 5078 } 5079 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5080 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5081 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5082 while (btstack_linked_list_iterator_has_next(&it)){ 5083 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5084 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5085 btstack_linked_list_iterator_remove(&it); 5086 btstack_memory_periodic_advertiser_list_entry_free(entry); 5087 } else { 5088 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5089 continue; 5090 } 5091 } 5092 #endif 5093 #endif 5094 // see hci_run 5095 hci_stack->state = HCI_STATE_HALTING; 5096 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5097 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5098 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5099 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5100 btstack_run_loop_add_timer(&hci_stack->timeout); 5101 } 5102 5103 // returns error 5104 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5105 int err; 5106 switch (power_mode){ 5107 case HCI_POWER_ON: 5108 err = hci_power_control_on(); 5109 if (err != 0) { 5110 log_error("hci_power_control_on() error %d", err); 5111 return err; 5112 } 5113 hci_power_enter_initializing_state(); 5114 break; 5115 case HCI_POWER_OFF: 5116 // do nothing 5117 break; 5118 case HCI_POWER_SLEEP: 5119 // do nothing (with SLEEP == OFF) 5120 break; 5121 default: 5122 btstack_assert(false); 5123 break; 5124 } 5125 return ERROR_CODE_SUCCESS; 5126 } 5127 5128 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5129 switch (power_mode){ 5130 case HCI_POWER_ON: 5131 // do nothing 5132 break; 5133 case HCI_POWER_OFF: 5134 // no connections yet, just turn it off 5135 hci_power_control_off(); 5136 break; 5137 case HCI_POWER_SLEEP: 5138 // no connections yet, just turn it off 5139 hci_power_control_sleep(); 5140 break; 5141 default: 5142 btstack_assert(false); 5143 break; 5144 } 5145 return ERROR_CODE_SUCCESS; 5146 } 5147 5148 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5149 switch (power_mode){ 5150 case HCI_POWER_ON: 5151 // do nothing 5152 break; 5153 case HCI_POWER_OFF: 5154 hci_power_enter_halting_state(); 5155 break; 5156 case HCI_POWER_SLEEP: 5157 // see hci_run 5158 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5159 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5160 break; 5161 default: 5162 btstack_assert(false); 5163 break; 5164 } 5165 return ERROR_CODE_SUCCESS; 5166 } 5167 5168 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5169 switch (power_mode){ 5170 case HCI_POWER_ON: 5171 hci_power_enter_initializing_state(); 5172 break; 5173 case HCI_POWER_OFF: 5174 // do nothing 5175 break; 5176 case HCI_POWER_SLEEP: 5177 // see hci_run 5178 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5179 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5180 break; 5181 default: 5182 btstack_assert(false); 5183 break; 5184 } 5185 return ERROR_CODE_SUCCESS; 5186 } 5187 5188 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5189 switch (power_mode){ 5190 case HCI_POWER_ON: 5191 hci_power_enter_initializing_state(); 5192 break; 5193 case HCI_POWER_OFF: 5194 hci_power_enter_halting_state(); 5195 break; 5196 case HCI_POWER_SLEEP: 5197 // do nothing 5198 break; 5199 default: 5200 btstack_assert(false); 5201 break; 5202 } 5203 return ERROR_CODE_SUCCESS; 5204 } 5205 5206 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5207 int err; 5208 switch (power_mode){ 5209 case HCI_POWER_ON: 5210 err = hci_power_control_wake(); 5211 if (err) return err; 5212 hci_power_enter_initializing_state(); 5213 break; 5214 case HCI_POWER_OFF: 5215 hci_power_enter_halting_state(); 5216 break; 5217 case HCI_POWER_SLEEP: 5218 // do nothing 5219 break; 5220 default: 5221 btstack_assert(false); 5222 break; 5223 } 5224 return ERROR_CODE_SUCCESS; 5225 } 5226 5227 int hci_power_control(HCI_POWER_MODE power_mode){ 5228 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5229 btstack_run_loop_remove_timer(&hci_stack->timeout); 5230 int err = 0; 5231 switch (hci_stack->state){ 5232 case HCI_STATE_OFF: 5233 err = hci_power_control_state_off(power_mode); 5234 break; 5235 case HCI_STATE_INITIALIZING: 5236 err = hci_power_control_state_initializing(power_mode); 5237 break; 5238 case HCI_STATE_WORKING: 5239 err = hci_power_control_state_working(power_mode); 5240 break; 5241 case HCI_STATE_HALTING: 5242 err = hci_power_control_state_halting(power_mode); 5243 break; 5244 case HCI_STATE_FALLING_ASLEEP: 5245 err = hci_power_control_state_falling_asleep(power_mode); 5246 break; 5247 case HCI_STATE_SLEEPING: 5248 err = hci_power_control_state_sleeping(power_mode); 5249 break; 5250 default: 5251 btstack_assert(false); 5252 break; 5253 } 5254 if (err != 0){ 5255 return err; 5256 } 5257 5258 // create internal event 5259 hci_emit_state(); 5260 5261 // trigger next/first action 5262 hci_run(); 5263 5264 return 0; 5265 } 5266 5267 5268 static void hci_halting_run(void) { 5269 5270 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5271 5272 hci_connection_t *connection; 5273 #ifdef ENABLE_BLE 5274 #ifdef ENABLE_LE_PERIPHERAL 5275 bool stop_advertismenets; 5276 #endif 5277 #endif 5278 5279 switch (hci_stack->substate) { 5280 case HCI_HALTING_CLASSIC_STOP: 5281 #ifdef ENABLE_CLASSIC 5282 if (!hci_can_send_command_packet_now()) return; 5283 5284 if (hci_stack->connectable || hci_stack->discoverable){ 5285 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5286 hci_send_cmd(&hci_write_scan_enable, 0); 5287 return; 5288 } 5289 #endif 5290 /* fall through */ 5291 5292 case HCI_HALTING_LE_ADV_STOP: 5293 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5294 5295 #ifdef ENABLE_BLE 5296 #ifdef ENABLE_LE_PERIPHERAL 5297 if (!hci_can_send_command_packet_now()) return; 5298 5299 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5300 5301 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5302 if (hci_extended_advertising_supported()){ 5303 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5304 btstack_linked_list_iterator_t it; 5305 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5306 // stop all periodic advertisements and check if an extended set is active 5307 while (btstack_linked_list_iterator_has_next(&it)){ 5308 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5309 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5310 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5311 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5312 return; 5313 } 5314 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5315 stop_advertismenets = true; 5316 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5317 } 5318 } 5319 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5320 if (stop_advertismenets){ 5321 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5322 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5323 return; 5324 } 5325 } else 5326 #else /* ENABLE_LE_PERIPHERAL */ 5327 { 5328 if (stop_advertismenets) { 5329 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5330 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5331 return; 5332 } 5333 } 5334 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5335 #endif /* ENABLE_LE_PERIPHERAL */ 5336 #endif /* ENABLE_BLE */ 5337 5338 /* fall through */ 5339 5340 case HCI_HALTING_LE_SCAN_STOP: 5341 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5342 if (!hci_can_send_command_packet_now()) return; 5343 5344 #ifdef ENABLE_BLE 5345 #ifdef ENABLE_LE_CENTRAL 5346 if (hci_stack->le_scanning_active){ 5347 hci_le_scan_stop(); 5348 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5349 return; 5350 } 5351 #endif 5352 #endif 5353 5354 /* fall through */ 5355 5356 case HCI_HALTING_DISCONNECT_ALL: 5357 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5358 if (!hci_can_send_command_packet_now()) return; 5359 5360 // close all open connections 5361 connection = (hci_connection_t *) hci_stack->connections; 5362 if (connection) { 5363 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5364 5365 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5366 5367 // check state 5368 switch(connection->state) { 5369 case SENT_DISCONNECT: 5370 case RECEIVED_DISCONNECTION_COMPLETE: 5371 // wait until connection is gone 5372 return; 5373 default: 5374 break; 5375 } 5376 5377 // finally, send the disconnect command 5378 connection->state = SENT_DISCONNECT; 5379 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5380 return; 5381 } 5382 5383 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5384 // stop BIGs and BIG Syncs 5385 if (hci_stack->le_audio_bigs != NULL){ 5386 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5387 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5388 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5389 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5390 return; 5391 } 5392 if (hci_stack->le_audio_big_syncs != NULL){ 5393 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5394 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5395 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5396 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5397 return; 5398 } 5399 #endif 5400 5401 btstack_run_loop_remove_timer(&hci_stack->timeout); 5402 5403 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5404 log_info("HCI_STATE_HALTING: wait 50 ms"); 5405 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5406 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5407 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5408 btstack_run_loop_add_timer(&hci_stack->timeout); 5409 break; 5410 5411 case HCI_HALTING_W4_CLOSE_TIMER: 5412 // keep waiting 5413 break; 5414 5415 case HCI_HALTING_CLOSE: 5416 // close left over connections (that had not been properly closed before) 5417 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5418 hci_discard_connections(); 5419 5420 log_info("HCI_STATE_HALTING, calling off"); 5421 5422 // switch mode 5423 hci_power_control_off(); 5424 5425 log_info("HCI_STATE_HALTING, emitting state"); 5426 hci_emit_state(); 5427 log_info("HCI_STATE_HALTING, done"); 5428 break; 5429 5430 default: 5431 break; 5432 } 5433 }; 5434 5435 static void hci_falling_asleep_run(void){ 5436 hci_connection_t * connection; 5437 switch(hci_stack->substate) { 5438 case HCI_FALLING_ASLEEP_DISCONNECT: 5439 log_info("HCI_STATE_FALLING_ASLEEP"); 5440 // close all open connections 5441 connection = (hci_connection_t *) hci_stack->connections; 5442 if (connection){ 5443 5444 // send disconnect 5445 if (!hci_can_send_command_packet_now()) return; 5446 5447 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5448 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5449 5450 // send disconnected event right away - causes higher layer connections to get closed, too. 5451 hci_shutdown_connection(connection); 5452 return; 5453 } 5454 5455 if (hci_classic_supported()){ 5456 // disable page and inquiry scan 5457 if (!hci_can_send_command_packet_now()) return; 5458 5459 log_info("HCI_STATE_HALTING, disabling inq scans"); 5460 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5461 5462 // continue in next sub state 5463 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5464 break; 5465 } 5466 5467 /* fall through */ 5468 5469 case HCI_FALLING_ASLEEP_COMPLETE: 5470 log_info("HCI_STATE_HALTING, calling sleep"); 5471 // switch mode 5472 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5473 hci_emit_state(); 5474 break; 5475 5476 default: 5477 break; 5478 } 5479 } 5480 5481 #ifdef ENABLE_CLASSIC 5482 5483 static void hci_update_scan_enable(void){ 5484 // 2 = page scan, 1 = inq scan 5485 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5486 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5487 hci_run(); 5488 } 5489 5490 void gap_discoverable_control(uint8_t enable){ 5491 if (enable) enable = 1; // normalize argument 5492 5493 if (hci_stack->discoverable == enable){ 5494 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5495 return; 5496 } 5497 5498 hci_stack->discoverable = enable; 5499 hci_update_scan_enable(); 5500 } 5501 5502 void gap_connectable_control(uint8_t enable){ 5503 if (enable) enable = 1; // normalize argument 5504 5505 // don't emit event 5506 if (hci_stack->connectable == enable) return; 5507 5508 hci_stack->connectable = enable; 5509 hci_update_scan_enable(); 5510 } 5511 #endif 5512 5513 void gap_local_bd_addr(bd_addr_t address_buffer){ 5514 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5515 } 5516 5517 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5518 static void hci_host_num_completed_packets(void){ 5519 5520 // create packet manually as arrays are not supported and num_commands should not get reduced 5521 hci_reserve_packet_buffer(); 5522 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5523 5524 uint16_t size = 0; 5525 uint16_t num_handles = 0; 5526 packet[size++] = 0x35; 5527 packet[size++] = 0x0c; 5528 size++; // skip param len 5529 size++; // skip num handles 5530 5531 // add { handle, packets } entries 5532 btstack_linked_item_t * it; 5533 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5534 hci_connection_t * connection = (hci_connection_t *) it; 5535 if (connection->num_packets_completed){ 5536 little_endian_store_16(packet, size, connection->con_handle); 5537 size += 2; 5538 little_endian_store_16(packet, size, connection->num_packets_completed); 5539 size += 2; 5540 // 5541 num_handles++; 5542 connection->num_packets_completed = 0; 5543 } 5544 } 5545 5546 packet[2] = size - 3; 5547 packet[3] = num_handles; 5548 5549 hci_stack->host_completed_packets = 0; 5550 5551 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5552 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5553 5554 // release packet buffer for synchronous transport implementations 5555 if (hci_transport_synchronous()){ 5556 hci_release_packet_buffer(); 5557 hci_emit_transport_packet_sent(); 5558 } 5559 } 5560 #endif 5561 5562 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5563 UNUSED(ds); 5564 hci_stack->substate = HCI_HALTING_CLOSE; 5565 hci_halting_run(); 5566 } 5567 5568 static bool hci_run_acl_fragments(void){ 5569 if (hci_stack->acl_fragmentation_total_size > 0u) { 5570 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5571 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5572 if (connection) { 5573 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5574 hci_send_acl_packet_fragments(connection); 5575 return true; 5576 } 5577 } else { 5578 // connection gone -> discard further fragments 5579 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5580 hci_stack->acl_fragmentation_total_size = 0; 5581 hci_stack->acl_fragmentation_pos = 0; 5582 } 5583 } 5584 return false; 5585 } 5586 5587 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5588 static bool hci_run_iso_fragments(void){ 5589 if (hci_stack->iso_fragmentation_total_size > 0u) { 5590 // TODO: flow control 5591 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5592 hci_send_iso_packet_fragments(); 5593 return true; 5594 } 5595 } 5596 return false; 5597 } 5598 #endif 5599 5600 #ifdef ENABLE_CLASSIC 5601 5602 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5603 static bool hci_classic_operation_active(void) { 5604 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5605 return true; 5606 } 5607 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5608 return true; 5609 } 5610 btstack_linked_item_t * it; 5611 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5612 hci_connection_t *connection = (hci_connection_t *) it; 5613 switch (connection->state) { 5614 case SENT_CREATE_CONNECTION: 5615 case SENT_CANCEL_CONNECTION: 5616 case SENT_DISCONNECT: 5617 return true; 5618 default: 5619 break; 5620 } 5621 } 5622 return false; 5623 } 5624 #endif 5625 5626 static bool hci_run_general_gap_classic(void){ 5627 5628 // assert stack is working and classic is active 5629 if (hci_classic_supported() == false) return false; 5630 if (hci_stack->state != HCI_STATE_WORKING) return false; 5631 5632 // decline incoming connections 5633 if (hci_stack->decline_reason){ 5634 uint8_t reason = hci_stack->decline_reason; 5635 hci_stack->decline_reason = 0; 5636 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5637 return true; 5638 } 5639 5640 if (hci_stack->gap_tasks_classic != 0){ 5641 hci_run_gap_tasks_classic(); 5642 return true; 5643 } 5644 5645 // start/stop inquiry 5646 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5647 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5648 if (hci_classic_operation_active() == false) 5649 #endif 5650 { 5651 uint8_t duration = hci_stack->inquiry_state; 5652 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5653 if (hci_stack->inquiry_max_period_length != 0){ 5654 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); 5655 } else { 5656 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5657 } 5658 return true; 5659 } 5660 } 5661 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5662 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5663 hci_send_cmd(&hci_inquiry_cancel); 5664 return true; 5665 } 5666 5667 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5668 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5669 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5670 return true; 5671 } 5672 5673 // remote name request 5674 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5675 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5676 if (hci_classic_operation_active() == false) 5677 #endif 5678 { 5679 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5680 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5681 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5682 return true; 5683 } 5684 } 5685 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5686 // Local OOB data 5687 if (hci_stack->classic_read_local_oob_data){ 5688 hci_stack->classic_read_local_oob_data = false; 5689 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5690 hci_send_cmd(&hci_read_local_extended_oob_data); 5691 } else { 5692 hci_send_cmd(&hci_read_local_oob_data); 5693 } 5694 } 5695 #endif 5696 // pairing 5697 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5698 uint8_t state = hci_stack->gap_pairing_state; 5699 uint8_t pin_code[16]; 5700 switch (state){ 5701 case GAP_PAIRING_STATE_SEND_PIN: 5702 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5703 memset(pin_code, 0, 16); 5704 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5705 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5706 break; 5707 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5708 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5709 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5710 break; 5711 case GAP_PAIRING_STATE_SEND_PASSKEY: 5712 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5713 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5714 break; 5715 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5716 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5717 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5718 break; 5719 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5720 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5721 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5722 break; 5723 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5724 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5725 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5726 break; 5727 default: 5728 break; 5729 } 5730 return true; 5731 } 5732 return false; 5733 } 5734 #endif 5735 5736 #ifdef ENABLE_BLE 5737 5738 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5739 static uint8_t hci_le_num_phys(uint8_t phys){ 5740 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5741 btstack_assert(phys); 5742 return num_bits_set[phys]; 5743 } 5744 #endif 5745 5746 #ifdef ENABLE_LE_CENTRAL 5747 static void hci_le_scan_stop(void){ 5748 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5749 if (hci_extended_advertising_supported()) { 5750 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5751 } else 5752 #endif 5753 { 5754 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5755 } 5756 } 5757 5758 static void 5759 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5760 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5761 if (hci_extended_advertising_supported()) { 5762 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5763 uint16_t le_connection_scan_interval[3]; 5764 uint16_t le_connection_scan_window[3]; 5765 uint16_t le_connection_interval_min[3]; 5766 uint16_t le_connection_interval_max[3]; 5767 uint16_t le_connection_latency[3]; 5768 uint16_t le_supervision_timeout[3]; 5769 uint16_t le_minimum_ce_length[3]; 5770 uint16_t le_maximum_ce_length[3]; 5771 5772 uint8_t i; 5773 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5774 for (i=0;i<num_phys;i++){ 5775 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5776 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5777 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5778 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5779 le_connection_latency[i] = hci_stack->le_connection_latency; 5780 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5781 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5782 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5783 } 5784 hci_send_cmd(&hci_le_extended_create_connection, 5785 initiator_filter_policy, 5786 hci_stack->le_connection_own_addr_type, // our addr type: 5787 address_type, // peer address type 5788 address, // peer bd addr 5789 hci_stack->le_connection_phys, // initiating PHY 5790 le_connection_scan_interval, // conn scan interval 5791 le_connection_scan_window, // conn scan windows 5792 le_connection_interval_min, // conn interval min 5793 le_connection_interval_max, // conn interval max 5794 le_connection_latency, // conn latency 5795 le_supervision_timeout, // conn latency 5796 le_minimum_ce_length, // min ce length 5797 le_maximum_ce_length // max ce length 5798 ); 5799 } else 5800 #endif 5801 { 5802 hci_send_cmd(&hci_le_create_connection, 5803 hci_stack->le_connection_scan_interval, // conn scan interval 5804 hci_stack->le_connection_scan_window, // conn scan windows 5805 initiator_filter_policy, // don't use whitelist 5806 address_type, // peer address type 5807 address, // peer bd addr 5808 hci_stack->le_connection_own_addr_type, // our addr type: 5809 hci_stack->le_connection_interval_min, // conn interval min 5810 hci_stack->le_connection_interval_max, // conn interval max 5811 hci_stack->le_connection_latency, // conn latency 5812 hci_stack->le_supervision_timeout, // conn latency 5813 hci_stack->le_minimum_ce_length, // min ce length 5814 hci_stack->le_maximum_ce_length // max ce length 5815 ); 5816 } 5817 } 5818 #endif 5819 5820 #ifdef ENABLE_LE_PERIPHERAL 5821 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5822 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5823 uint8_t operation = 0; 5824 if (pos == 0){ 5825 // first fragment or complete data 5826 operation |= 1; 5827 } 5828 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5829 // last fragment or complete data 5830 operation |= 2; 5831 } 5832 return operation; 5833 } 5834 #endif 5835 #endif 5836 5837 static bool hci_run_general_gap_le(void){ 5838 5839 btstack_linked_list_iterator_t lit; 5840 5841 // Phase 1: collect what to stop 5842 5843 #ifdef ENABLE_LE_CENTRAL 5844 bool scanning_stop = false; 5845 bool connecting_stop = false; 5846 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5847 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5848 bool periodic_sync_stop = false; 5849 #endif 5850 #endif 5851 #endif 5852 5853 #ifdef ENABLE_LE_PERIPHERAL 5854 bool advertising_stop = false; 5855 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5856 le_advertising_set_t * advertising_stop_set = NULL; 5857 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5858 bool periodic_advertising_stop = false; 5859 #endif 5860 #endif 5861 #endif 5862 5863 // check if own address changes 5864 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 5865 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 5866 5867 // check if whitelist needs modification 5868 bool whitelist_modification_pending = false; 5869 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5870 while (btstack_linked_list_iterator_has_next(&lit)){ 5871 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5872 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5873 whitelist_modification_pending = true; 5874 break; 5875 } 5876 } 5877 5878 // check if resolving list needs modification 5879 bool resolving_list_modification_pending = false; 5880 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5881 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5882 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5883 resolving_list_modification_pending = true; 5884 } 5885 #endif 5886 5887 #ifdef ENABLE_LE_CENTRAL 5888 5889 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5890 // check if periodic advertiser list needs modification 5891 bool periodic_list_modification_pending = false; 5892 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5893 while (btstack_linked_list_iterator_has_next(&lit)){ 5894 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5895 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5896 periodic_list_modification_pending = true; 5897 break; 5898 } 5899 } 5900 #endif 5901 5902 // scanning control 5903 if (hci_stack->le_scanning_active) { 5904 // stop if: 5905 // - parameter change required 5906 // - it's disabled 5907 // - whitelist change required but used for scanning 5908 // - resolving list modified 5909 // - own address changes 5910 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5911 if ((hci_stack->le_scanning_param_update) || 5912 !hci_stack->le_scanning_enabled || 5913 (scanning_uses_whitelist && whitelist_modification_pending) || 5914 resolving_list_modification_pending || 5915 random_address_change){ 5916 5917 scanning_stop = true; 5918 } 5919 } 5920 5921 // connecting control 5922 bool connecting_with_whitelist; 5923 switch (hci_stack->le_connecting_state){ 5924 case LE_CONNECTING_DIRECT: 5925 case LE_CONNECTING_WHITELIST: 5926 // stop connecting if: 5927 // - connecting uses white and whitelist modification pending 5928 // - if it got disabled 5929 // - resolving list modified 5930 // - own address changes 5931 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5932 if ((connecting_with_whitelist && whitelist_modification_pending) || 5933 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5934 resolving_list_modification_pending || 5935 random_address_change) { 5936 5937 connecting_stop = true; 5938 } 5939 break; 5940 default: 5941 break; 5942 } 5943 5944 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5945 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5946 // periodic sync control 5947 bool sync_with_advertiser_list; 5948 switch(hci_stack->le_periodic_sync_state){ 5949 case LE_CONNECTING_DIRECT: 5950 case LE_CONNECTING_WHITELIST: 5951 // stop sync if: 5952 // - sync with advertiser list and advertiser list modification pending 5953 // - if it got disabled 5954 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5955 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5956 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5957 periodic_sync_stop = true; 5958 } 5959 break; 5960 default: 5961 break; 5962 } 5963 #endif 5964 #endif 5965 5966 #endif /* ENABLE_LE_CENTRAL */ 5967 5968 #ifdef ENABLE_LE_PERIPHERAL 5969 // le advertisement control 5970 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5971 // stop if: 5972 // - parameter change required 5973 // - random address used in advertising and changes 5974 // - it's disabled 5975 // - whitelist change required but used for advertisement filter policy 5976 // - resolving list modified 5977 // - own address changes 5978 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5979 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5980 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5981 if (advertising_change || 5982 (advertising_uses_random_address && random_address_change) || 5983 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5984 (advertising_uses_whitelist && whitelist_modification_pending) || 5985 resolving_list_modification_pending || 5986 random_address_change) { 5987 5988 advertising_stop = true; 5989 } 5990 } 5991 5992 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5993 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5994 btstack_linked_list_iterator_t it; 5995 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5996 while (btstack_linked_list_iterator_has_next(&it)){ 5997 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5998 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5999 // stop if: 6000 // - parameter change required 6001 // - random address used in connectable advertising and changes 6002 // - it's disabled 6003 // - whitelist change required but used for advertisement filter policy 6004 // - resolving list modified 6005 // - own address changes 6006 // - advertisement set will be removed 6007 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6008 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6009 bool advertising_uses_random_address = 6010 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6011 advertising_connectable; 6012 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6013 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6014 bool advertising_set_random_address_change = 6015 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6016 bool advertising_set_will_be_removed = 6017 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6018 if (advertising_parameter_change || 6019 (advertising_uses_random_address && advertising_set_random_address_change) || 6020 (advertising_enabled == false) || 6021 (advertising_uses_whitelist && whitelist_modification_pending) || 6022 resolving_list_modification_pending || 6023 advertising_set_will_be_removed) { 6024 6025 advertising_stop = true; 6026 advertising_stop_set = advertising_set; 6027 break; 6028 } 6029 } 6030 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6031 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6032 // stop if: 6033 // - it's disabled 6034 // - parameter change required 6035 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6036 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6037 if ((periodic_enabled == false) || periodic_parameter_change){ 6038 periodic_advertising_stop = true; 6039 advertising_stop_set = advertising_set; 6040 } 6041 } 6042 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6043 } 6044 } 6045 #endif 6046 6047 #endif 6048 6049 6050 // Phase 2: stop everything that should be off during modifications 6051 6052 6053 // 2.1 Outgoing connection 6054 #ifdef ENABLE_LE_CENTRAL 6055 if (connecting_stop){ 6056 hci_send_cmd(&hci_le_create_connection_cancel); 6057 return true; 6058 } 6059 #endif 6060 6061 // 2.2 Scanning 6062 #ifdef ENABLE_LE_CENTRAL 6063 if (scanning_stop){ 6064 hci_stack->le_scanning_active = false; 6065 hci_le_scan_stop(); 6066 return true; 6067 } 6068 6069 // 2.3 Periodic Sync 6070 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6071 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6072 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6073 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6074 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6075 return true; 6076 } 6077 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6078 if (periodic_sync_stop){ 6079 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6080 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6081 return true; 6082 } 6083 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6084 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6085 #endif /* ENABLE_LE_CENTRAL */ 6086 6087 // 2.4 Advertising: legacy, extended, periodic 6088 #ifdef ENABLE_LE_PERIPHERAL 6089 if (advertising_stop){ 6090 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6091 if (hci_extended_advertising_supported()) { 6092 uint8_t advertising_stop_handle; 6093 if (advertising_stop_set != NULL){ 6094 advertising_stop_handle = advertising_stop_set->advertising_handle; 6095 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6096 } else { 6097 advertising_stop_handle = 0; 6098 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6099 } 6100 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6101 const uint16_t durations[] = { 0 }; 6102 const uint16_t max_events[] = { 0 }; 6103 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6104 } else 6105 #endif 6106 { 6107 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6108 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6109 } 6110 return true; 6111 } 6112 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6113 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6114 if (periodic_advertising_stop){ 6115 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6116 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6117 return true; 6118 } 6119 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6120 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6121 #endif /* ENABLE_LE_PERIPHERAL */ 6122 6123 6124 // Phase 3: modify 6125 6126 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6127 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6128 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6129 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6130 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6131 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6132 #endif 6133 return true; 6134 } 6135 6136 #ifdef ENABLE_LE_CENTRAL 6137 if (hci_stack->le_scanning_param_update){ 6138 hci_stack->le_scanning_param_update = false; 6139 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6140 if (hci_extended_advertising_supported()){ 6141 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6142 uint8_t scan_types[2]; 6143 uint16_t scan_intervals[2]; 6144 uint16_t scan_windows[2]; 6145 6146 uint8_t i; 6147 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6148 for (i=0;i<num_phys;i++){ 6149 scan_types[i] = hci_stack->le_scan_type; 6150 scan_intervals[i] = hci_stack->le_scan_interval; 6151 scan_windows[i] = hci_stack->le_scan_window; 6152 } 6153 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6154 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6155 } else 6156 #endif 6157 { 6158 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6159 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6160 } 6161 return true; 6162 } 6163 #endif 6164 6165 #ifdef ENABLE_LE_PERIPHERAL 6166 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6167 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6168 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6169 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6170 if (hci_extended_advertising_supported()){ 6171 // map advertisment type to advertising event properties 6172 uint16_t adv_event_properties = 0; 6173 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6174 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6175 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6176 } 6177 hci_stack->le_advertising_set_in_current_command = 0; 6178 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6179 0, 6180 adv_event_properties, 6181 hci_stack->le_advertisements_interval_min, 6182 hci_stack->le_advertisements_interval_max, 6183 hci_stack->le_advertisements_channel_map, 6184 hci_stack->le_advertisements_own_addr_type, 6185 hci_stack->le_advertisements_direct_address_type, 6186 hci_stack->le_advertisements_direct_address, 6187 hci_stack->le_advertisements_filter_policy, 6188 0x7f, // tx power: no preference 6189 0x01, // primary adv phy: LE 1M 6190 0, // secondary adv max skip 6191 0x01, // secondary adv phy 6192 0, // adv sid 6193 0 // scan request notification 6194 ); 6195 } else 6196 #endif 6197 { 6198 hci_send_cmd(&hci_le_set_advertising_parameters, 6199 hci_stack->le_advertisements_interval_min, 6200 hci_stack->le_advertisements_interval_max, 6201 hci_stack->le_advertisements_type, 6202 hci_stack->le_advertisements_own_addr_type, 6203 hci_stack->le_advertisements_direct_address_type, 6204 hci_stack->le_advertisements_direct_address, 6205 hci_stack->le_advertisements_channel_map, 6206 hci_stack->le_advertisements_filter_policy); 6207 } 6208 return true; 6209 } 6210 6211 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6212 // assumption: only set if extended advertising is supported 6213 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6214 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6215 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6216 return true; 6217 } 6218 #endif 6219 6220 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6221 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6222 uint8_t adv_data_clean[31]; 6223 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6224 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6225 hci_stack->le_advertisements_data_len); 6226 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6227 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6228 if (hci_extended_advertising_supported()){ 6229 hci_stack->le_advertising_set_in_current_command = 0; 6230 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6231 } else 6232 #endif 6233 { 6234 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6235 } 6236 return true; 6237 } 6238 6239 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6240 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6241 uint8_t scan_data_clean[31]; 6242 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6243 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6244 hci_stack->le_scan_response_data_len); 6245 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6246 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6247 if (hci_extended_advertising_supported()){ 6248 hci_stack->le_advertising_set_in_current_command = 0; 6249 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6250 } else 6251 #endif 6252 { 6253 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6254 } 6255 return true; 6256 } 6257 6258 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6259 if (hci_extended_advertising_supported()) { 6260 btstack_linked_list_iterator_t it; 6261 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6262 while (btstack_linked_list_iterator_has_next(&it)){ 6263 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6264 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6265 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6266 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6267 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6268 return true; 6269 } 6270 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6271 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6272 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6273 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6274 advertising_set->advertising_handle, 6275 advertising_set->extended_params.advertising_event_properties, 6276 advertising_set->extended_params.primary_advertising_interval_min, 6277 advertising_set->extended_params.primary_advertising_interval_max, 6278 advertising_set->extended_params.primary_advertising_channel_map, 6279 advertising_set->extended_params.own_address_type, 6280 advertising_set->extended_params.peer_address_type, 6281 advertising_set->extended_params.peer_address, 6282 advertising_set->extended_params.advertising_filter_policy, 6283 advertising_set->extended_params.advertising_tx_power, 6284 advertising_set->extended_params.primary_advertising_phy, 6285 advertising_set->extended_params.secondary_advertising_max_skip, 6286 advertising_set->extended_params.secondary_advertising_phy, 6287 advertising_set->extended_params.advertising_sid, 6288 advertising_set->extended_params.scan_request_notification_enable 6289 ); 6290 return true; 6291 } 6292 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6293 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6294 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6295 return true; 6296 } 6297 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6298 uint16_t pos = advertising_set->adv_data_pos; 6299 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6300 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6301 if ((operation & 0x02) != 0){ 6302 // last fragment or complete data 6303 operation |= 2; 6304 advertising_set->adv_data_pos = 0; 6305 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6306 } else { 6307 advertising_set->adv_data_pos += data_to_upload; 6308 } 6309 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6310 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6311 return true; 6312 } 6313 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6314 uint16_t pos = advertising_set->scan_data_pos; 6315 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6316 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6317 if ((operation & 0x02) != 0){ 6318 advertising_set->scan_data_pos = 0; 6319 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6320 } else { 6321 advertising_set->scan_data_pos += data_to_upload; 6322 } 6323 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6324 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6325 return true; 6326 } 6327 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6328 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6329 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6330 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6331 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6332 advertising_set->advertising_handle, 6333 advertising_set->periodic_params.periodic_advertising_interval_min, 6334 advertising_set->periodic_params.periodic_advertising_interval_max, 6335 advertising_set->periodic_params.periodic_advertising_properties); 6336 return true; 6337 } 6338 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6339 uint16_t pos = advertising_set->periodic_data_pos; 6340 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6341 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6342 if ((operation & 0x02) != 0){ 6343 // last fragment or complete data 6344 operation |= 2; 6345 advertising_set->periodic_data_pos = 0; 6346 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6347 } else { 6348 advertising_set->periodic_data_pos += data_to_upload; 6349 } 6350 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6351 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6352 return true; 6353 } 6354 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6355 } 6356 } 6357 #endif 6358 6359 #endif 6360 6361 #ifdef ENABLE_LE_CENTRAL 6362 // if connect with whitelist was active and is not cancelled yet, wait until next time 6363 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6364 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6365 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6366 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6367 #endif 6368 #endif 6369 6370 // LE Whitelist Management 6371 if (whitelist_modification_pending){ 6372 // add/remove entries 6373 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6374 while (btstack_linked_list_iterator_has_next(&lit)){ 6375 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6376 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6377 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6378 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6379 bd_addr_type_t address_type = entry->address_type; 6380 bd_addr_t address; 6381 memcpy(address, entry->address, 6); 6382 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6383 // remove from whitelist if not scheduled for re-addition 6384 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6385 btstack_memory_whitelist_entry_free(entry); 6386 } 6387 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6388 return true; 6389 } 6390 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6391 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6392 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6393 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6394 return true; 6395 } 6396 } 6397 } 6398 6399 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6400 // LE Resolving List Management 6401 if (resolving_list_supported) { 6402 uint16_t i; 6403 switch (hci_stack->le_resolving_list_state) { 6404 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6405 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6406 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6407 return true; 6408 case LE_RESOLVING_LIST_READ_SIZE: 6409 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6410 hci_send_cmd(&hci_le_read_resolving_list_size); 6411 return true; 6412 case LE_RESOLVING_LIST_SEND_CLEAR: 6413 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6414 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6415 sizeof(hci_stack->le_resolving_list_add_entries)); 6416 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6417 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6418 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6419 sizeof(hci_stack->le_resolving_list_remove_entries)); 6420 hci_send_cmd(&hci_le_clear_resolving_list); 6421 return true; 6422 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6423 // first remove old entries 6424 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6425 uint8_t offset = i >> 3; 6426 uint8_t mask = 1 << (i & 7); 6427 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6428 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6429 bd_addr_t peer_identity_addreses; 6430 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6431 sm_key_t peer_irk; 6432 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6433 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6434 6435 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6436 // trigger whitelist entry 'update' (work around for controller bug) 6437 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6438 while (btstack_linked_list_iterator_has_next(&lit)) { 6439 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6440 if (entry->address_type != peer_identity_addr_type) continue; 6441 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6442 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6443 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6444 } 6445 #endif 6446 6447 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6448 peer_identity_addreses); 6449 return true; 6450 } 6451 6452 // then add new entries 6453 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6454 uint8_t offset = i >> 3; 6455 uint8_t mask = 1 << (i & 7); 6456 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6457 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6458 bd_addr_t peer_identity_addreses; 6459 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6460 sm_key_t peer_irk; 6461 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6462 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6463 if (btstack_is_null(peer_irk, 16)) continue; 6464 const uint8_t *local_irk = gap_get_persistent_irk(); 6465 // command uses format specifier 'P' that stores 16-byte value without flip 6466 uint8_t local_irk_flipped[16]; 6467 uint8_t peer_irk_flipped[16]; 6468 reverse_128(local_irk, local_irk_flipped); 6469 reverse_128(peer_irk, peer_irk_flipped); 6470 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6471 peer_irk_flipped, local_irk_flipped); 6472 return true; 6473 } 6474 6475 // finally, set privacy mode 6476 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6477 uint8_t offset = i >> 3; 6478 uint8_t mask = 1 << (i & 7); 6479 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6480 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6481 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6482 // Network Privacy Mode is default 6483 continue; 6484 } 6485 bd_addr_t peer_identity_address; 6486 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6487 sm_key_t peer_irk; 6488 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6489 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6490 if (btstack_is_null(peer_irk, 16)) continue; 6491 // command uses format specifier 'P' that stores 16-byte value without flip 6492 uint8_t peer_irk_flipped[16]; 6493 reverse_128(peer_irk, peer_irk_flipped); 6494 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6495 return true; 6496 } 6497 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6498 break; 6499 6500 default: 6501 break; 6502 } 6503 } 6504 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6505 #endif 6506 6507 #ifdef ENABLE_LE_CENTRAL 6508 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6509 // LE Whitelist Management 6510 if (periodic_list_modification_pending){ 6511 // add/remove entries 6512 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6513 while (btstack_linked_list_iterator_has_next(&lit)){ 6514 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6515 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6516 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6517 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6518 return true; 6519 } 6520 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6521 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6522 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6523 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6524 return true; 6525 } 6526 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6527 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6528 btstack_memory_periodic_advertiser_list_entry_free(entry); 6529 } 6530 } 6531 } 6532 #endif 6533 #endif 6534 6535 #ifdef ENABLE_LE_CENTRAL 6536 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6537 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6538 if (hci_stack->le_past_set_default_params){ 6539 hci_stack->le_past_set_default_params = false; 6540 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6541 hci_stack->le_past_mode, 6542 hci_stack->le_past_skip, 6543 hci_stack->le_past_sync_timeout, 6544 hci_stack->le_past_cte_type); 6545 return true; 6546 } 6547 #endif 6548 #endif 6549 #endif 6550 6551 // post-pone all actions until stack is fully working 6552 if (hci_stack->state != HCI_STATE_WORKING) return false; 6553 6554 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6555 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6556 6557 // Phase 4: restore state 6558 6559 #ifdef ENABLE_LE_CENTRAL 6560 // re-start scanning 6561 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6562 hci_stack->le_scanning_active = true; 6563 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6564 if (hci_extended_advertising_supported()){ 6565 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6566 } else 6567 #endif 6568 { 6569 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6570 } 6571 return true; 6572 } 6573 #endif 6574 6575 #ifdef ENABLE_LE_CENTRAL 6576 // re-start connecting 6577 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6578 bd_addr_t null_addr; 6579 memset(null_addr, 0, 6); 6580 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6581 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6582 hci_send_le_create_connection(1, 0, null_addr); 6583 return true; 6584 } 6585 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6586 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6587 switch(hci_stack->le_periodic_sync_request){ 6588 case LE_CONNECTING_DIRECT: 6589 case LE_CONNECTING_WHITELIST: 6590 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6591 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6592 hci_stack->le_periodic_sync_options, 6593 hci_stack->le_periodic_sync_advertising_sid, 6594 hci_stack->le_periodic_sync_advertiser_address_type, 6595 hci_stack->le_periodic_sync_advertiser_address, 6596 hci_stack->le_periodic_sync_skip, 6597 hci_stack->le_periodic_sync_timeout, 6598 hci_stack->le_periodic_sync_cte_type); 6599 return true; 6600 default: 6601 break; 6602 } 6603 } 6604 #endif 6605 #endif 6606 6607 #ifdef ENABLE_LE_PERIPHERAL 6608 // re-start advertising 6609 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6610 // check if advertisements should be enabled given 6611 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6612 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6613 6614 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6615 if (hci_extended_advertising_supported()){ 6616 const uint8_t advertising_handles[] = { 0 }; 6617 const uint16_t durations[] = { 0 }; 6618 const uint16_t max_events[] = { 0 }; 6619 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6620 } else 6621 #endif 6622 { 6623 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6624 } 6625 return true; 6626 } 6627 6628 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6629 if (hci_extended_advertising_supported()) { 6630 btstack_linked_list_iterator_t it; 6631 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6632 while (btstack_linked_list_iterator_has_next(&it)) { 6633 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6634 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6635 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6636 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6637 const uint16_t durations[] = { advertising_set->enable_timeout }; 6638 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6639 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6640 return true; 6641 } 6642 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6643 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6644 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6645 uint8_t enable = 1; 6646 if (advertising_set->periodic_include_adi){ 6647 enable |= 2; 6648 } 6649 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6650 return true; 6651 } 6652 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6653 } 6654 } 6655 #endif 6656 #endif 6657 6658 return false; 6659 } 6660 6661 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6662 static bool hci_run_iso_tasks(void){ 6663 btstack_linked_list_iterator_t it; 6664 6665 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6666 return false; 6667 } 6668 6669 // BIG 6670 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6671 while (btstack_linked_list_iterator_has_next(&it)){ 6672 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6673 switch (big->state){ 6674 case LE_AUDIO_BIG_STATE_CREATE: 6675 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6676 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6677 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6678 hci_send_cmd(&hci_le_create_big, 6679 big->params->big_handle, 6680 big->params->advertising_handle, 6681 big->params->num_bis, 6682 big->params->sdu_interval_us, 6683 big->params->max_sdu, 6684 big->params->max_transport_latency_ms, 6685 big->params->rtn, 6686 big->params->phy, 6687 big->params->packing, 6688 big->params->framing, 6689 big->params->encryption, 6690 big->params->broadcast_code); 6691 return true; 6692 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6693 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6694 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); 6695 return true; 6696 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6697 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6698 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6699 return true; 6700 case LE_AUDIO_BIG_STATE_TERMINATE: 6701 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6702 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6703 return true; 6704 default: 6705 break; 6706 } 6707 } 6708 6709 // BIG Sync 6710 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6711 while (btstack_linked_list_iterator_has_next(&it)){ 6712 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6713 switch (big_sync->state){ 6714 case LE_AUDIO_BIG_STATE_CREATE: 6715 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6716 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6717 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6718 hci_send_cmd(&hci_le_big_create_sync, 6719 big_sync->params->big_handle, 6720 big_sync->params->sync_handle, 6721 big_sync->params->encryption, 6722 big_sync->params->broadcast_code, 6723 big_sync->params->mse, 6724 big_sync->params->big_sync_timeout_10ms, 6725 big_sync->params->num_bis, 6726 big_sync->params->bis_indices); 6727 return true; 6728 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6729 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6730 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); 6731 return true; 6732 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6733 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6734 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6735 return true; 6736 case LE_AUDIO_BIG_STATE_TERMINATE: 6737 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6738 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6739 return true; 6740 default: 6741 break; 6742 } 6743 } 6744 6745 // CIG 6746 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6747 while (btstack_linked_list_iterator_has_next(&it)) { 6748 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6749 uint8_t i; 6750 // Set CIG Parameters 6751 uint8_t cis_id[MAX_NR_CIS]; 6752 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6753 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6754 uint8_t phy_c_to_p[MAX_NR_CIS]; 6755 uint8_t phy_p_to_c[MAX_NR_CIS]; 6756 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6757 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6758 switch (cig->state) { 6759 case LE_AUDIO_CIG_STATE_CREATE: 6760 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6761 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6762 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6763 le_audio_cig_params_t * params = cig->params; 6764 for (i = 0; i < params->num_cis; i++) { 6765 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6766 cis_id[i] = cis_params->cis_id; 6767 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6768 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6769 phy_c_to_p[i] = cis_params->phy_c_to_p; 6770 phy_p_to_c[i] = cis_params->phy_p_to_c; 6771 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6772 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6773 } 6774 hci_send_cmd(&hci_le_set_cig_parameters, 6775 cig->cig_id, 6776 params->sdu_interval_c_to_p, 6777 params->sdu_interval_p_to_c, 6778 params->worst_case_sca, 6779 params->packing, 6780 params->framing, 6781 params->max_transport_latency_c_to_p, 6782 params->max_transport_latency_p_to_c, 6783 params->num_cis, 6784 cis_id, 6785 max_sdu_c_to_p, 6786 max_sdu_p_to_c, 6787 phy_c_to_p, 6788 phy_p_to_c, 6789 rtn_c_to_p, 6790 rtn_p_to_c 6791 ); 6792 return true; 6793 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6794 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6795 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6796 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6797 for (i=0;i<cig->num_cis;i++){ 6798 cig->cis_setup_active[i] = true; 6799 } 6800 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6801 return true; 6802 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6803 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6804 // find next path to setup 6805 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6806 if (cig->cis_established[cis_index] == false) { 6807 continue; 6808 } 6809 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6810 bool setup = true; 6811 if (cis_direction == 0){ 6812 // 0 - input - host to controller 6813 // we are central => central to peripheral 6814 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6815 } else { 6816 // 1 - output - controller to host 6817 // we are central => peripheral to central 6818 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6819 } 6820 if (setup){ 6821 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6822 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6823 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6824 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, 0, 0, 0, 0, 0, NULL); 6825 return true; 6826 } 6827 cig->state_vars.next_cis++; 6828 } 6829 // emit done 6830 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6831 default: 6832 break; 6833 } 6834 } 6835 6836 // CIS Accept/Reject 6837 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6838 while (btstack_linked_list_iterator_has_next(&it)) { 6839 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6840 hci_con_handle_t con_handle; 6841 switch (iso_stream->state){ 6842 case HCI_ISO_STREAM_W2_ACCEPT: 6843 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6844 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6845 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6846 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 6847 return true; 6848 case HCI_ISO_STREAM_W2_REJECT: 6849 con_handle = iso_stream->cis_handle; 6850 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6851 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6852 hci_iso_stream_finalize(iso_stream); 6853 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6854 return true; 6855 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6856 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6857 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6858 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6859 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 0, 0, 0, 0, 0, 0, 0, NULL); 6860 break; 6861 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6862 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6863 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6864 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6865 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 1, 0, 0, 0, 0, 0, 0, NULL); 6866 break; 6867 default: 6868 break; 6869 } 6870 } 6871 6872 return false; 6873 } 6874 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6875 #endif 6876 6877 static bool hci_run_general_pending_commands(void){ 6878 btstack_linked_item_t * it; 6879 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6880 hci_connection_t * connection = (hci_connection_t *) it; 6881 6882 switch(connection->state){ 6883 case SEND_CREATE_CONNECTION: 6884 switch(connection->address_type){ 6885 #ifdef ENABLE_CLASSIC 6886 case BD_ADDR_TYPE_ACL: 6887 log_info("sending hci_create_connection"); 6888 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6889 break; 6890 #endif 6891 default: 6892 #ifdef ENABLE_BLE 6893 #ifdef ENABLE_LE_CENTRAL 6894 log_info("sending hci_le_create_connection"); 6895 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6896 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6897 hci_send_le_create_connection(0, connection->address_type, connection->address); 6898 connection->state = SENT_CREATE_CONNECTION; 6899 #endif 6900 #endif 6901 break; 6902 } 6903 return true; 6904 6905 #ifdef ENABLE_CLASSIC 6906 case RECEIVED_CONNECTION_REQUEST: 6907 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6908 log_info("sending hci_accept_connection_request"); 6909 connection->state = ACCEPTED_CONNECTION_REQUEST; 6910 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6911 return true; 6912 } 6913 break; 6914 #endif 6915 case SEND_DISCONNECT: 6916 connection->state = SENT_DISCONNECT; 6917 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6918 return true; 6919 6920 default: 6921 break; 6922 } 6923 6924 // no further commands if connection is about to get shut down 6925 if (connection->state == SENT_DISCONNECT) continue; 6926 6927 #ifdef ENABLE_CLASSIC 6928 6929 // Handling link key request requires remote supported features 6930 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6931 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6932 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6933 6934 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6935 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6936 if (have_link_key && security_level_sufficient){ 6937 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6938 } else { 6939 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6940 } 6941 return true; 6942 } 6943 6944 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6945 log_info("denying to pin request"); 6946 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6947 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6948 return true; 6949 } 6950 6951 // security assessment requires remote features 6952 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6953 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6954 hci_ssp_assess_security_on_io_cap_request(connection); 6955 // 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 6956 } 6957 6958 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6959 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6960 // set authentication requirements: 6961 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6962 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6963 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6964 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6965 authreq |= 1; 6966 } 6967 bool bonding = hci_stack->bondable; 6968 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6969 // if we have received IO Cap Response, we're in responder role 6970 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6971 if (bonding && !remote_bonding){ 6972 log_info("Remote not bonding, dropping local flag"); 6973 bonding = false; 6974 } 6975 } 6976 if (bonding){ 6977 if (connection->bonding_flags & BONDING_DEDICATED){ 6978 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6979 } else { 6980 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6981 } 6982 } 6983 uint8_t have_oob_data = 0; 6984 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6985 if (connection->classic_oob_c_192 != NULL){ 6986 have_oob_data |= 1; 6987 } 6988 if (connection->classic_oob_c_256 != NULL){ 6989 have_oob_data |= 2; 6990 } 6991 #endif 6992 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6993 return true; 6994 } 6995 6996 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6997 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6998 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6999 return true; 7000 } 7001 7002 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7003 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7004 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7005 const uint8_t zero[16] = { 0 }; 7006 const uint8_t * r_192 = zero; 7007 const uint8_t * c_192 = zero; 7008 const uint8_t * r_256 = zero; 7009 const uint8_t * c_256 = zero; 7010 // verify P-256 OOB 7011 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7012 c_256 = connection->classic_oob_c_256; 7013 if (connection->classic_oob_r_256 != NULL) { 7014 r_256 = connection->classic_oob_r_256; 7015 } 7016 } 7017 // verify P-192 OOB 7018 if ((connection->classic_oob_c_192 != NULL)) { 7019 c_192 = connection->classic_oob_c_192; 7020 if (connection->classic_oob_r_192 != NULL) { 7021 r_192 = connection->classic_oob_r_192; 7022 } 7023 } 7024 7025 // assess security 7026 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7027 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7028 if (need_level_4 && !can_reach_level_4){ 7029 log_info("Level 4 required, but not possible -> abort"); 7030 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7031 // send oob negative reply 7032 c_256 = NULL; 7033 c_192 = NULL; 7034 } 7035 7036 // Reply 7037 if (c_256 != zero) { 7038 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7039 } else if (c_192 != zero){ 7040 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7041 } else { 7042 hci_stack->classic_oob_con_handle = connection->con_handle; 7043 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7044 } 7045 return true; 7046 } 7047 #endif 7048 7049 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7050 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7051 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7052 return true; 7053 } 7054 7055 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7056 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7057 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7058 return true; 7059 } 7060 7061 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7062 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7063 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7064 return true; 7065 } 7066 7067 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7068 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7069 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7070 connection->state = SENT_DISCONNECT; 7071 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7072 return true; 7073 } 7074 7075 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7076 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7077 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7078 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7079 return true; 7080 } 7081 7082 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7083 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7084 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7085 return true; 7086 } 7087 7088 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7089 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7090 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7091 return true; 7092 } 7093 7094 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7095 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7096 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7097 return true; 7098 } 7099 7100 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7101 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7102 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7103 return true; 7104 } 7105 7106 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7107 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7108 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7109 return true; 7110 } 7111 #endif 7112 7113 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7114 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7115 #ifdef ENABLE_CLASSIC 7116 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7117 #endif 7118 if (connection->state != SENT_DISCONNECT){ 7119 connection->state = SENT_DISCONNECT; 7120 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7121 return true; 7122 } 7123 } 7124 7125 #ifdef ENABLE_CLASSIC 7126 uint16_t sniff_min_interval; 7127 switch (connection->sniff_min_interval){ 7128 case 0: 7129 break; 7130 case 0xffff: 7131 connection->sniff_min_interval = 0; 7132 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7133 return true; 7134 default: 7135 sniff_min_interval = connection->sniff_min_interval; 7136 connection->sniff_min_interval = 0; 7137 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7138 return true; 7139 } 7140 7141 if (connection->sniff_subrating_max_latency != 0xffff){ 7142 uint16_t max_latency = connection->sniff_subrating_max_latency; 7143 connection->sniff_subrating_max_latency = 0; 7144 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7145 return true; 7146 } 7147 7148 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7149 uint8_t service_type = (uint8_t) connection->qos_service_type; 7150 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7151 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); 7152 return true; 7153 } 7154 7155 if (connection->request_role != HCI_ROLE_INVALID){ 7156 hci_role_t role = connection->request_role; 7157 connection->request_role = HCI_ROLE_INVALID; 7158 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7159 return true; 7160 } 7161 #endif 7162 7163 if (connection->gap_connection_tasks != 0){ 7164 #ifdef ENABLE_CLASSIC 7165 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7166 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7167 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7168 return true; 7169 } 7170 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7171 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7172 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7173 return true; 7174 } 7175 #endif 7176 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7177 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7178 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7179 return true; 7180 } 7181 #ifdef ENABLE_BLE 7182 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7183 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7184 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7185 return true; 7186 } 7187 #endif 7188 } 7189 7190 #ifdef ENABLE_BLE 7191 switch (connection->le_con_parameter_update_state){ 7192 // response to L2CAP CON PARAMETER UPDATE REQUEST 7193 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7194 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7195 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7196 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7197 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7198 return true; 7199 case CON_PARAMETER_UPDATE_REPLY: 7200 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7201 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7202 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7203 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7204 return true; 7205 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7206 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7207 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7208 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7209 return true; 7210 default: 7211 break; 7212 } 7213 if (connection->le_phy_update_all_phys != 0xffu){ 7214 uint8_t all_phys = connection->le_phy_update_all_phys; 7215 connection->le_phy_update_all_phys = 0xff; 7216 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); 7217 return true; 7218 } 7219 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7220 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7221 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7222 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7223 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7224 return true; 7225 } 7226 #endif 7227 #endif 7228 } 7229 return false; 7230 } 7231 7232 static void hci_run(void){ 7233 7234 // stack state sub statemachines 7235 switch (hci_stack->state) { 7236 case HCI_STATE_INITIALIZING: 7237 hci_initializing_run(); 7238 break; 7239 case HCI_STATE_HALTING: 7240 hci_halting_run(); 7241 break; 7242 case HCI_STATE_FALLING_ASLEEP: 7243 hci_falling_asleep_run(); 7244 break; 7245 default: 7246 break; 7247 } 7248 7249 // allow to run after initialization to working transition 7250 if (hci_stack->state != HCI_STATE_WORKING){ 7251 return; 7252 } 7253 7254 bool done; 7255 7256 // send continuation fragments first, as they block the prepared packet buffer 7257 done = hci_run_acl_fragments(); 7258 if (done) return; 7259 7260 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7261 done = hci_run_iso_fragments(); 7262 if (done) return; 7263 #endif 7264 7265 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7266 // send host num completed packets next as they don't require num_cmd_packets > 0 7267 if (!hci_can_send_comand_packet_transport()) return; 7268 if (hci_stack->host_completed_packets){ 7269 hci_host_num_completed_packets(); 7270 return; 7271 } 7272 #endif 7273 7274 if (!hci_can_send_command_packet_now()) return; 7275 7276 // global/non-connection oriented commands 7277 7278 7279 #ifdef ENABLE_CLASSIC 7280 // general gap classic 7281 done = hci_run_general_gap_classic(); 7282 if (done) return; 7283 #endif 7284 7285 #ifdef ENABLE_BLE 7286 // general gap le 7287 done = hci_run_general_gap_le(); 7288 if (done) return; 7289 7290 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7291 // ISO related tasks, e.g. BIG create/terminate/sync 7292 done = hci_run_iso_tasks(); 7293 if (done) return; 7294 #endif 7295 #endif 7296 7297 // send pending HCI commands 7298 hci_run_general_pending_commands(); 7299 } 7300 7301 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7302 // house-keeping 7303 7304 #ifdef ENABLE_CLASSIC 7305 bd_addr_t addr; 7306 hci_connection_t * conn; 7307 #endif 7308 #ifdef ENABLE_LE_CENTRAL 7309 uint8_t initiator_filter_policy; 7310 #endif 7311 7312 uint16_t opcode = little_endian_read_16(packet, 0); 7313 switch (opcode) { 7314 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7315 hci_stack->loopback_mode = packet[3]; 7316 break; 7317 7318 #ifdef ENABLE_CLASSIC 7319 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7320 reverse_bd_addr(&packet[3], addr); 7321 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7322 7323 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7324 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7325 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7326 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7327 } 7328 7329 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7330 if (!conn) { 7331 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7332 if (!conn) { 7333 // notify client that alloc failed 7334 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7335 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7336 } 7337 conn->state = SEND_CREATE_CONNECTION; 7338 } 7339 7340 log_info("conn state %u", conn->state); 7341 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7342 switch (conn->state) { 7343 // if connection active exists 7344 case OPEN: 7345 // and OPEN, emit connection complete command 7346 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7347 // packet not sent to controller 7348 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7349 case RECEIVED_DISCONNECTION_COMPLETE: 7350 // create connection triggered in disconnect complete event, let's do it now 7351 break; 7352 case SEND_CREATE_CONNECTION: 7353 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7354 if (hci_classic_operation_active()){ 7355 return ERROR_CODE_SUCCESS; 7356 } 7357 #endif 7358 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7359 break; 7360 default: 7361 // otherwise, just ignore as it is already in the open process 7362 // packet not sent to controller 7363 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7364 } 7365 conn->state = SENT_CREATE_CONNECTION; 7366 7367 // track outgoing connection 7368 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7369 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7370 break; 7371 7372 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7373 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7374 if (conn == NULL) { 7375 // neither SCO nor ACL connection for con handle 7376 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7377 } else { 7378 switch (conn->address_type){ 7379 case BD_ADDR_TYPE_ACL: 7380 // assert SCO connection does not exit 7381 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7382 return ERROR_CODE_COMMAND_DISALLOWED; 7383 } 7384 // allocate connection struct 7385 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7386 HCI_ROLE_MASTER); 7387 if (!conn) { 7388 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7389 } 7390 break; 7391 case BD_ADDR_TYPE_SCO: 7392 // update of existing SCO connection 7393 break; 7394 default: 7395 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7396 } 7397 } 7398 7399 // conn refers to hci connection of type sco now 7400 7401 conn->state = SENT_CREATE_CONNECTION; 7402 7403 // track outgoing connection to handle command status with error 7404 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7405 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7406 7407 // setup_synchronous_connection? Voice setting at offset 22 7408 // TODO: compare to current setting if sco connection already active 7409 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7410 break; 7411 7412 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7413 // get SCO connection 7414 reverse_bd_addr(&packet[3], addr); 7415 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7416 if (conn == NULL){ 7417 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7418 } 7419 7420 conn->state = ACCEPTED_CONNECTION_REQUEST; 7421 7422 // track outgoing connection to handle command status with error 7423 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7424 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7425 7426 // accept_synchronous_connection? Voice setting at offset 18 7427 // TODO: compare to current setting if sco connection already active 7428 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7429 break; 7430 #endif 7431 7432 #ifdef ENABLE_BLE 7433 #ifdef ENABLE_LE_CENTRAL 7434 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7435 // white list used? 7436 initiator_filter_policy = packet[7]; 7437 switch (initiator_filter_policy) { 7438 case 0: 7439 // whitelist not used 7440 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7441 break; 7442 case 1: 7443 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7444 break; 7445 default: 7446 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7447 break; 7448 } 7449 // track outgoing connection 7450 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7451 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7452 break; 7453 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7454 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7455 // white list used? 7456 initiator_filter_policy = packet[3]; 7457 switch (initiator_filter_policy) { 7458 case 0: 7459 // whitelist not used 7460 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7461 break; 7462 case 1: 7463 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7464 break; 7465 default: 7466 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7467 break; 7468 } 7469 // track outgoing connection 7470 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7471 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7472 break; 7473 #endif 7474 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7475 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7476 break; 7477 #endif 7478 #endif /* ENABLE_BLE */ 7479 default: 7480 break; 7481 } 7482 7483 hci_stack->num_cmd_packets--; 7484 7485 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7486 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7487 if (err != 0){ 7488 return ERROR_CODE_HARDWARE_FAILURE; 7489 } 7490 return ERROR_CODE_SUCCESS; 7491 } 7492 7493 // disconnect because of security block 7494 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7495 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7496 if (!connection) return; 7497 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7498 } 7499 7500 7501 // Configure Secure Simple Pairing 7502 7503 #ifdef ENABLE_CLASSIC 7504 7505 // enable will enable SSP during init 7506 void gap_ssp_set_enable(int enable){ 7507 hci_stack->ssp_enable = enable; 7508 } 7509 7510 static int hci_local_ssp_activated(void){ 7511 return gap_ssp_supported() && hci_stack->ssp_enable; 7512 } 7513 7514 // if set, BTstack will respond to io capability request using authentication requirement 7515 void gap_ssp_set_io_capability(int io_capability){ 7516 hci_stack->ssp_io_capability = io_capability; 7517 } 7518 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7519 hci_stack->ssp_authentication_requirement = authentication_requirement; 7520 } 7521 7522 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7523 void gap_ssp_set_auto_accept(int auto_accept){ 7524 hci_stack->ssp_auto_accept = auto_accept; 7525 } 7526 7527 void gap_secure_connections_enable(bool enable){ 7528 hci_stack->secure_connections_enable = enable; 7529 } 7530 bool gap_secure_connections_active(void){ 7531 return hci_stack->secure_connections_active; 7532 } 7533 7534 #endif 7535 7536 // va_list part of hci_send_cmd 7537 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7538 if (!hci_can_send_command_packet_now()){ 7539 log_error("hci_send_cmd called but cannot send packet now"); 7540 return ERROR_CODE_COMMAND_DISALLOWED; 7541 } 7542 7543 // for HCI INITIALIZATION 7544 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7545 hci_stack->last_cmd_opcode = cmd->opcode; 7546 7547 hci_reserve_packet_buffer(); 7548 uint8_t * packet = hci_stack->hci_packet_buffer; 7549 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7550 uint8_t status = hci_send_cmd_packet(packet, size); 7551 7552 // release packet buffer on error or for synchronous transport implementations 7553 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7554 hci_release_packet_buffer(); 7555 hci_emit_transport_packet_sent(); 7556 } 7557 7558 return status; 7559 } 7560 7561 /** 7562 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7563 */ 7564 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7565 va_list argptr; 7566 va_start(argptr, cmd); 7567 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7568 va_end(argptr); 7569 return status; 7570 } 7571 7572 // Create various non-HCI events. 7573 // TODO: generalize, use table similar to hci_create_command 7574 7575 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7576 // dump packet 7577 if (dump) { 7578 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7579 } 7580 7581 // dispatch to all event handlers 7582 btstack_linked_list_iterator_t it; 7583 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7584 while (btstack_linked_list_iterator_has_next(&it)){ 7585 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7586 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7587 } 7588 } 7589 7590 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7591 if (!hci_stack->acl_packet_handler) return; 7592 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7593 } 7594 7595 #ifdef ENABLE_CLASSIC 7596 static void hci_notify_if_sco_can_send_now(void){ 7597 // notify SCO sender if waiting 7598 if (!hci_stack->sco_waiting_for_can_send_now) return; 7599 if (hci_can_send_sco_packet_now()){ 7600 hci_stack->sco_waiting_for_can_send_now = 0; 7601 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7602 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7603 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7604 } 7605 } 7606 7607 // parsing end emitting has been merged to reduce code size 7608 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7609 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7610 7611 uint8_t * eir_data; 7612 ad_context_t context; 7613 const uint8_t * name; 7614 uint8_t name_len; 7615 7616 if (size < 3) return; 7617 7618 int event_type = hci_event_packet_get_type(packet); 7619 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7620 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7621 7622 switch (event_type){ 7623 case HCI_EVENT_INQUIRY_RESULT: 7624 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7625 if (size != (3 + (num_responses * 14))) return; 7626 break; 7627 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7628 if (size != 257) return; 7629 if (num_responses != 1) return; 7630 break; 7631 default: 7632 return; 7633 } 7634 7635 // event[1] is set at the end 7636 int i; 7637 for (i=0; i<num_responses;i++){ 7638 memset(event, 0, sizeof(event)); 7639 event[0] = GAP_EVENT_INQUIRY_RESULT; 7640 uint8_t event_size = 27; // if name is not set by EIR 7641 7642 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7643 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7644 (void)memcpy(&event[9], 7645 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7646 3); // class of device 7647 (void)memcpy(&event[12], 7648 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7649 2); // clock offset 7650 7651 switch (event_type){ 7652 case HCI_EVENT_INQUIRY_RESULT: 7653 // 14,15,16,17 = 0, size 18 7654 break; 7655 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7656 event[14] = 1; 7657 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7658 // 16,17 = 0, size 18 7659 break; 7660 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7661 event[14] = 1; 7662 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7663 // EIR packets only contain a single inquiry response 7664 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7665 name = NULL; 7666 // Iterate over EIR data 7667 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7668 uint8_t data_type = ad_iterator_get_data_type(&context); 7669 uint8_t data_size = ad_iterator_get_data_len(&context); 7670 const uint8_t * data = ad_iterator_get_data(&context); 7671 // Prefer Complete Local Name over Shortened Local Name 7672 switch (data_type){ 7673 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7674 if (name) continue; 7675 /* fall through */ 7676 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7677 name = data; 7678 name_len = data_size; 7679 break; 7680 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7681 if (data_size != 8) break; 7682 event[16] = 1; 7683 memcpy(&event[17], data, 8); 7684 break; 7685 default: 7686 break; 7687 } 7688 } 7689 if (name){ 7690 event[25] = 1; 7691 // truncate name if needed 7692 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7693 event[26] = len; 7694 (void)memcpy(&event[27], name, len); 7695 event_size += len; 7696 } 7697 break; 7698 default: 7699 return; 7700 } 7701 event[1] = event_size - 2; 7702 hci_emit_event(event, event_size, 1); 7703 } 7704 } 7705 #endif 7706 7707 void hci_emit_state(void){ 7708 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7709 uint8_t event[3]; 7710 event[0] = BTSTACK_EVENT_STATE; 7711 event[1] = sizeof(event) - 2u; 7712 event[2] = hci_stack->state; 7713 hci_emit_event(event, sizeof(event), 1); 7714 } 7715 7716 #ifdef ENABLE_CLASSIC 7717 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7718 uint8_t event[13]; 7719 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7720 event[1] = sizeof(event) - 2; 7721 event[2] = status; 7722 little_endian_store_16(event, 3, con_handle); 7723 reverse_bd_addr(address, &event[5]); 7724 event[11] = 1; // ACL connection 7725 event[12] = 0; // encryption disabled 7726 hci_emit_event(event, sizeof(event), 1); 7727 } 7728 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7729 if (disable_l2cap_timeouts) return; 7730 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7731 uint8_t event[4]; 7732 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7733 event[1] = sizeof(event) - 2; 7734 little_endian_store_16(event, 2, conn->con_handle); 7735 hci_emit_event(event, sizeof(event), 1); 7736 } 7737 #endif 7738 7739 #ifdef ENABLE_BLE 7740 #ifdef ENABLE_LE_CENTRAL 7741 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){ 7742 uint8_t event[21]; 7743 event[0] = HCI_EVENT_LE_META; 7744 event[1] = sizeof(event) - 2u; 7745 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7746 event[3] = status; 7747 little_endian_store_16(event, 4, con_handle); 7748 event[6] = 0; // TODO: role 7749 event[7] = address_type; 7750 reverse_bd_addr(address, &event[8]); 7751 little_endian_store_16(event, 14, 0); // interval 7752 little_endian_store_16(event, 16, 0); // latency 7753 little_endian_store_16(event, 18, 0); // supervision timeout 7754 event[20] = 0; // master clock accuracy 7755 hci_emit_event(event, sizeof(event), 1); 7756 } 7757 #endif 7758 #endif 7759 7760 static void hci_emit_transport_packet_sent(void){ 7761 // notify upper stack that it might be possible to send again 7762 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7763 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7764 } 7765 7766 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7767 uint8_t event[6]; 7768 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7769 event[1] = sizeof(event) - 2u; 7770 event[2] = 0; // status = OK 7771 little_endian_store_16(event, 3, con_handle); 7772 event[5] = reason; 7773 hci_emit_event(event, sizeof(event), 1); 7774 } 7775 7776 static void hci_emit_nr_connections_changed(void){ 7777 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7778 uint8_t event[3]; 7779 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7780 event[1] = sizeof(event) - 2u; 7781 event[2] = nr_hci_connections(); 7782 hci_emit_event(event, sizeof(event), 1); 7783 } 7784 7785 static void hci_emit_hci_open_failed(void){ 7786 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7787 uint8_t event[2]; 7788 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7789 event[1] = sizeof(event) - 2u; 7790 hci_emit_event(event, sizeof(event), 1); 7791 } 7792 7793 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7794 log_info("hci_emit_dedicated_bonding_result %u ", status); 7795 uint8_t event[9]; 7796 int pos = 0; 7797 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7798 event[pos++] = sizeof(event) - 2u; 7799 event[pos++] = status; 7800 reverse_bd_addr(address, &event[pos]); 7801 hci_emit_event(event, sizeof(event), 1); 7802 } 7803 7804 7805 #ifdef ENABLE_CLASSIC 7806 7807 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7808 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7809 uint8_t event[5]; 7810 int pos = 0; 7811 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7812 event[pos++] = sizeof(event) - 2; 7813 little_endian_store_16(event, 2, con_handle); 7814 pos += 2; 7815 event[pos++] = level; 7816 hci_emit_event(event, sizeof(event), 1); 7817 } 7818 7819 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7820 if (!connection) return LEVEL_0; 7821 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7822 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7823 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7824 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7825 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7826 // LEVEL 4 always requires 128 bit encrytion key size 7827 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7828 security_level = LEVEL_3; 7829 } 7830 return security_level; 7831 } 7832 7833 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7834 uint8_t event[4]; 7835 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7836 event[1] = sizeof(event) - 2; 7837 event[2] = discoverable; 7838 event[3] = connectable; 7839 hci_emit_event(event, sizeof(event), 1); 7840 } 7841 7842 // query if remote side supports eSCO 7843 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7844 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7845 if (!connection) return false; 7846 return (connection->remote_supported_features[0] & 1) != 0; 7847 } 7848 7849 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 7850 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7851 if (!connection) return 0; 7852 return connection->remote_supported_sco_packets; 7853 } 7854 7855 static bool hci_ssp_supported(hci_connection_t * connection){ 7856 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7857 return (connection->bonding_flags & mask) == mask; 7858 } 7859 7860 // query if remote side supports SSP 7861 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7862 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7863 if (!connection) return false; 7864 return hci_ssp_supported(connection) ? 1 : 0; 7865 } 7866 7867 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7868 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7869 } 7870 7871 /** 7872 * Check if remote supported features query has completed 7873 */ 7874 bool hci_remote_features_available(hci_con_handle_t handle){ 7875 hci_connection_t * connection = hci_connection_for_handle(handle); 7876 if (!connection) return false; 7877 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7878 } 7879 7880 /** 7881 * Trigger remote supported features query 7882 */ 7883 7884 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7885 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7886 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7887 } 7888 } 7889 7890 void hci_remote_features_query(hci_con_handle_t con_handle){ 7891 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7892 if (!connection) return; 7893 hci_trigger_remote_features_for_connection(connection); 7894 hci_run(); 7895 } 7896 7897 // GAP API 7898 /** 7899 * @bbrief enable/disable bonding. default is enabled 7900 * @praram enabled 7901 */ 7902 void gap_set_bondable_mode(int enable){ 7903 hci_stack->bondable = enable ? 1 : 0; 7904 } 7905 /** 7906 * @brief Get bondable mode. 7907 * @return 1 if bondable 7908 */ 7909 int gap_get_bondable_mode(void){ 7910 return hci_stack->bondable; 7911 } 7912 7913 /** 7914 * @brief map link keys to security levels 7915 */ 7916 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7917 switch (link_key_type){ 7918 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7919 return LEVEL_4; 7920 case COMBINATION_KEY: 7921 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7922 return LEVEL_3; 7923 default: 7924 return LEVEL_2; 7925 } 7926 } 7927 7928 /** 7929 * @brief map link keys to secure connection yes/no 7930 */ 7931 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7932 switch (link_key_type){ 7933 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7934 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7935 return true; 7936 default: 7937 return false; 7938 } 7939 } 7940 7941 /** 7942 * @brief map link keys to authenticated 7943 */ 7944 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7945 switch (link_key_type){ 7946 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7947 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7948 return true; 7949 default: 7950 return false; 7951 } 7952 } 7953 7954 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7955 log_info("gap_mitm_protection_required_for_security_level %u", level); 7956 return level > LEVEL_2; 7957 } 7958 7959 /** 7960 * @brief get current security level 7961 */ 7962 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7963 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7964 if (!connection) return LEVEL_0; 7965 return gap_security_level_for_connection(connection); 7966 } 7967 7968 /** 7969 * @brief request connection to device to 7970 * @result GAP_AUTHENTICATION_RESULT 7971 */ 7972 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7973 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7974 if (!connection){ 7975 hci_emit_security_level(con_handle, LEVEL_0); 7976 return; 7977 } 7978 7979 btstack_assert(hci_is_le_connection(connection) == false); 7980 7981 // 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) 7982 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7983 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7984 requested_level = LEVEL_4; 7985 } 7986 7987 gap_security_level_t current_level = gap_security_level(con_handle); 7988 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7989 requested_level, connection->requested_security_level, current_level); 7990 7991 // authentication active if authentication request was sent or planned level > 0 7992 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7993 if (authentication_active){ 7994 // authentication already active 7995 if (connection->requested_security_level < requested_level){ 7996 // increase requested level as new level is higher 7997 // TODO: handle re-authentication when done 7998 connection->requested_security_level = requested_level; 7999 } 8000 } else { 8001 // no request active, notify if security sufficient 8002 if (requested_level <= current_level){ 8003 hci_emit_security_level(con_handle, current_level); 8004 return; 8005 } 8006 8007 // store request 8008 connection->requested_security_level = requested_level; 8009 8010 // start to authenticate connection 8011 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8012 8013 // request remote features if not already active, also trigger hci_run 8014 hci_remote_features_query(con_handle); 8015 } 8016 } 8017 8018 /** 8019 * @brief start dedicated bonding with device. disconnect after bonding 8020 * @param device 8021 * @param request MITM protection 8022 * @result GAP_DEDICATED_BONDING_COMPLETE 8023 */ 8024 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8025 8026 // create connection state machine 8027 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8028 8029 if (!connection){ 8030 return BTSTACK_MEMORY_ALLOC_FAILED; 8031 } 8032 8033 // delete link key 8034 gap_drop_link_key_for_bd_addr(device); 8035 8036 // configure LEVEL_2/3, dedicated bonding 8037 connection->state = SEND_CREATE_CONNECTION; 8038 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8039 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8040 connection->bonding_flags = BONDING_DEDICATED; 8041 8042 hci_run(); 8043 8044 return 0; 8045 } 8046 8047 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8048 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8049 if (connection == NULL){ 8050 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8051 } 8052 if (defer){ 8053 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8054 } else { 8055 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8056 // trigger disconnect 8057 hci_run(); 8058 } 8059 return ERROR_CODE_SUCCESS; 8060 } 8061 8062 void gap_set_local_name(const char * local_name){ 8063 hci_stack->local_name = local_name; 8064 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8065 // also update EIR if not set by user 8066 if (hci_stack->eir_data == NULL){ 8067 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8068 } 8069 hci_run(); 8070 } 8071 #endif 8072 8073 8074 #ifdef ENABLE_BLE 8075 8076 #ifdef ENABLE_LE_CENTRAL 8077 void gap_start_scan(void){ 8078 hci_stack->le_scanning_enabled = true; 8079 hci_run(); 8080 } 8081 8082 void gap_stop_scan(void){ 8083 hci_stack->le_scanning_enabled = false; 8084 hci_run(); 8085 } 8086 8087 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8088 hci_stack->le_scan_type = scan_type; 8089 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8090 hci_stack->le_scan_interval = scan_interval; 8091 hci_stack->le_scan_window = scan_window; 8092 hci_stack->le_scanning_param_update = true; 8093 hci_run(); 8094 } 8095 8096 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8097 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8098 } 8099 8100 void gap_set_scan_duplicate_filter(bool enabled){ 8101 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8102 } 8103 8104 void gap_set_scan_phys(uint8_t phys){ 8105 // LE Coded and LE 1M PHY 8106 hci_stack->le_scan_phys = phys & 0x05; 8107 } 8108 8109 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 8110 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8111 if (!conn){ 8112 // disallow if le connection is already outgoing 8113 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8114 log_error("le connection already active"); 8115 return ERROR_CODE_COMMAND_DISALLOWED; 8116 } 8117 8118 log_info("gap_connect: no connection exists yet, creating context"); 8119 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8120 if (!conn){ 8121 // notify client that alloc failed 8122 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 8123 log_info("gap_connect: failed to alloc hci_connection_t"); 8124 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 8125 } 8126 8127 // set le connecting state 8128 if (hci_is_le_connection_type(addr_type)){ 8129 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8130 } 8131 8132 conn->state = SEND_CREATE_CONNECTION; 8133 log_info("gap_connect: send create connection next"); 8134 hci_run(); 8135 return ERROR_CODE_SUCCESS; 8136 } 8137 8138 if (!hci_is_le_connection(conn) || 8139 (conn->state == SEND_CREATE_CONNECTION) || 8140 (conn->state == SENT_CREATE_CONNECTION)) { 8141 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 8142 log_error("gap_connect: classic connection or connect is already being created"); 8143 return GATT_CLIENT_IN_WRONG_STATE; 8144 } 8145 8146 // check if connection was just disconnected 8147 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8148 log_info("gap_connect: send create connection (again)"); 8149 conn->state = SEND_CREATE_CONNECTION; 8150 hci_run(); 8151 return ERROR_CODE_SUCCESS; 8152 } 8153 8154 log_info("gap_connect: context exists with state %u", conn->state); 8155 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 8156 hci_run(); 8157 return ERROR_CODE_SUCCESS; 8158 } 8159 8160 // @assumption: only a single outgoing LE Connection exists 8161 static hci_connection_t * gap_get_outgoing_connection(void){ 8162 btstack_linked_item_t *it; 8163 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8164 hci_connection_t * conn = (hci_connection_t *) it; 8165 if (!hci_is_le_connection(conn)) continue; 8166 switch (conn->state){ 8167 case SEND_CREATE_CONNECTION: 8168 case SENT_CREATE_CONNECTION: 8169 return conn; 8170 default: 8171 break; 8172 }; 8173 } 8174 return NULL; 8175 } 8176 8177 uint8_t gap_connect_cancel(void){ 8178 hci_connection_t * conn; 8179 switch (hci_stack->le_connecting_request){ 8180 case LE_CONNECTING_IDLE: 8181 break; 8182 case LE_CONNECTING_WHITELIST: 8183 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8184 hci_run(); 8185 break; 8186 case LE_CONNECTING_DIRECT: 8187 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8188 conn = gap_get_outgoing_connection(); 8189 if (conn == NULL){ 8190 hci_run(); 8191 } else { 8192 switch (conn->state){ 8193 case SEND_CREATE_CONNECTION: 8194 // skip sending create connection and emit event instead 8195 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8196 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8197 btstack_memory_hci_connection_free( conn ); 8198 break; 8199 case SENT_CREATE_CONNECTION: 8200 // let hci_run_general_gap_le cancel outgoing connection 8201 hci_run(); 8202 break; 8203 default: 8204 break; 8205 } 8206 } 8207 break; 8208 default: 8209 btstack_unreachable(); 8210 break; 8211 } 8212 return ERROR_CODE_SUCCESS; 8213 } 8214 8215 /** 8216 * @brief Set connection parameters for outgoing connections 8217 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8218 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8219 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8220 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8221 * @param conn_latency, default: 4 8222 * @param supervision_timeout (unit: 10ms), default: 720 ms 8223 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8224 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8225 */ 8226 8227 void gap_set_connection_phys(uint8_t phys){ 8228 // LE Coded, LE 1M, LE 2M PHY 8229 hci_stack->le_connection_phys = phys & 7; 8230 } 8231 8232 #endif 8233 8234 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8235 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8236 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8237 hci_stack->le_connection_scan_interval = conn_scan_interval; 8238 hci_stack->le_connection_scan_window = conn_scan_window; 8239 hci_stack->le_connection_interval_min = conn_interval_min; 8240 hci_stack->le_connection_interval_max = conn_interval_max; 8241 hci_stack->le_connection_latency = conn_latency; 8242 hci_stack->le_supervision_timeout = supervision_timeout; 8243 hci_stack->le_minimum_ce_length = min_ce_length; 8244 hci_stack->le_maximum_ce_length = max_ce_length; 8245 } 8246 8247 /** 8248 * @brief Updates the connection parameters for a given LE connection 8249 * @param handle 8250 * @param conn_interval_min (unit: 1.25ms) 8251 * @param conn_interval_max (unit: 1.25ms) 8252 * @param conn_latency 8253 * @param supervision_timeout (unit: 10ms) 8254 * @return 0 if ok 8255 */ 8256 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8257 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8258 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8259 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8260 connection->le_conn_interval_min = conn_interval_min; 8261 connection->le_conn_interval_max = conn_interval_max; 8262 connection->le_conn_latency = conn_latency; 8263 connection->le_supervision_timeout = supervision_timeout; 8264 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8265 hci_run(); 8266 return 0; 8267 } 8268 8269 /** 8270 * @brief Request an update of the connection parameter for a given LE connection 8271 * @param handle 8272 * @param conn_interval_min (unit: 1.25ms) 8273 * @param conn_interval_max (unit: 1.25ms) 8274 * @param conn_latency 8275 * @param supervision_timeout (unit: 10ms) 8276 * @return 0 if ok 8277 */ 8278 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8279 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8280 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8281 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8282 connection->le_conn_interval_min = conn_interval_min; 8283 connection->le_conn_interval_max = conn_interval_max; 8284 connection->le_conn_latency = conn_latency; 8285 connection->le_supervision_timeout = supervision_timeout; 8286 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8287 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8288 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8289 return 0; 8290 } 8291 8292 #ifdef ENABLE_LE_PERIPHERAL 8293 8294 /** 8295 * @brief Set Advertisement Data 8296 * @param advertising_data_length 8297 * @param advertising_data (max 31 octets) 8298 * @note data is not copied, pointer has to stay valid 8299 */ 8300 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8301 hci_stack->le_advertisements_data_len = advertising_data_length; 8302 hci_stack->le_advertisements_data = advertising_data; 8303 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8304 hci_run(); 8305 } 8306 8307 /** 8308 * @brief Set Scan Response Data 8309 * @param advertising_data_length 8310 * @param advertising_data (max 31 octets) 8311 * @note data is not copied, pointer has to stay valid 8312 */ 8313 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8314 hci_stack->le_scan_response_data_len = scan_response_data_length; 8315 hci_stack->le_scan_response_data = scan_response_data; 8316 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8317 hci_run(); 8318 } 8319 8320 /** 8321 * @brief Set Advertisement Parameters 8322 * @param adv_int_min 8323 * @param adv_int_max 8324 * @param adv_type 8325 * @param direct_address_type 8326 * @param direct_address 8327 * @param channel_map 8328 * @param filter_policy 8329 * 8330 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8331 */ 8332 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8333 uint8_t direct_address_typ, bd_addr_t direct_address, 8334 uint8_t channel_map, uint8_t filter_policy) { 8335 8336 hci_stack->le_advertisements_interval_min = adv_int_min; 8337 hci_stack->le_advertisements_interval_max = adv_int_max; 8338 hci_stack->le_advertisements_type = adv_type; 8339 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8340 hci_stack->le_advertisements_channel_map = channel_map; 8341 hci_stack->le_advertisements_filter_policy = filter_policy; 8342 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8343 6); 8344 8345 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8346 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8347 hci_run(); 8348 } 8349 8350 /** 8351 * @brief Enable/Disable Advertisements 8352 * @param enabled 8353 */ 8354 void gap_advertisements_enable(int enabled){ 8355 if (enabled == 0){ 8356 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8357 } else { 8358 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8359 } 8360 hci_update_advertisements_enabled_for_current_roles(); 8361 hci_run(); 8362 } 8363 8364 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8365 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8366 btstack_linked_list_iterator_t it; 8367 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8368 while (btstack_linked_list_iterator_has_next(&it)){ 8369 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8370 if ( item->advertising_handle == advertising_handle ) { 8371 return item; 8372 } 8373 } 8374 return NULL; 8375 } 8376 8377 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8378 // find free advertisement handle 8379 uint8_t advertisement_handle; 8380 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8381 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8382 } 8383 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8384 // clear 8385 memset(storage, 0, sizeof(le_advertising_set_t)); 8386 // copy params 8387 storage->advertising_handle = advertisement_handle; 8388 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8389 // add to list 8390 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8391 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8392 *out_advertising_handle = advertisement_handle; 8393 // set tasks and start 8394 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8395 hci_run(); 8396 return ERROR_CODE_SUCCESS; 8397 } 8398 8399 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8400 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8401 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8402 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8403 // set tasks and start 8404 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8405 hci_run(); 8406 return ERROR_CODE_SUCCESS; 8407 } 8408 8409 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8410 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8411 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8412 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8413 return ERROR_CODE_SUCCESS; 8414 } 8415 8416 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8417 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8418 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8419 memcpy(advertising_set->random_address, random_address, 6); 8420 // set tasks and start 8421 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8422 hci_run(); 8423 return ERROR_CODE_SUCCESS; 8424 } 8425 8426 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8427 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8428 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8429 advertising_set->adv_data = advertising_data; 8430 advertising_set->adv_data_len = advertising_data_length; 8431 // set tasks and start 8432 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8433 hci_run(); 8434 return ERROR_CODE_SUCCESS; 8435 } 8436 8437 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){ 8438 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8439 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8440 advertising_set->scan_data = scan_response_data; 8441 advertising_set->scan_data_len = scan_response_data_length; 8442 // set tasks and start 8443 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8444 hci_run(); 8445 return ERROR_CODE_SUCCESS; 8446 } 8447 8448 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8449 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8450 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8451 advertising_set->enable_timeout = timeout; 8452 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8453 // set tasks and start 8454 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8455 hci_run(); 8456 return ERROR_CODE_SUCCESS; 8457 } 8458 8459 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8460 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8461 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8462 // set tasks and start 8463 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8464 hci_run(); 8465 return ERROR_CODE_SUCCESS; 8466 } 8467 8468 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8469 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8470 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8471 // set tasks and start 8472 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8473 hci_run(); 8474 return ERROR_CODE_SUCCESS; 8475 } 8476 8477 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8478 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8479 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8480 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8481 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8482 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8483 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8484 // set tasks and start 8485 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8486 hci_run(); 8487 return ERROR_CODE_SUCCESS; 8488 } 8489 8490 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8491 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8492 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8493 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8494 return ERROR_CODE_SUCCESS; 8495 } 8496 8497 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8498 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8499 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8500 advertising_set->periodic_data = periodic_data; 8501 advertising_set->periodic_data_len = periodic_data_length; 8502 // set tasks and start 8503 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8504 hci_run(); 8505 return ERROR_CODE_SUCCESS; 8506 } 8507 8508 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8509 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8510 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8511 // set tasks and start 8512 advertising_set->periodic_include_adi = include_adi; 8513 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8514 hci_run(); 8515 return ERROR_CODE_SUCCESS; 8516 } 8517 8518 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8519 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8520 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8521 // set tasks and start 8522 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8523 hci_run(); 8524 return ERROR_CODE_SUCCESS; 8525 } 8526 8527 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8528 hci_stack->le_past_mode = mode; 8529 hci_stack->le_past_skip = skip; 8530 hci_stack->le_past_sync_timeout = sync_timeout; 8531 hci_stack->le_past_cte_type = cte_type; 8532 hci_stack->le_past_set_default_params = true; 8533 hci_run(); 8534 return ERROR_CODE_SUCCESS; 8535 } 8536 8537 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8538 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8539 if (hci_connection == NULL){ 8540 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8541 } 8542 hci_connection->le_past_sync_handle = sync_handle; 8543 hci_connection->le_past_service_data = service_data; 8544 hci_run(); 8545 return ERROR_CODE_SUCCESS; 8546 } 8547 8548 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8549 8550 #endif 8551 8552 #endif 8553 8554 void hci_le_set_own_address_type(uint8_t own_address_type){ 8555 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8556 if (own_address_type == hci_stack->le_own_addr_type) return; 8557 hci_stack->le_own_addr_type = own_address_type; 8558 8559 #ifdef ENABLE_LE_PERIPHERAL 8560 // update advertisement parameters, too 8561 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8562 hci_run(); 8563 #endif 8564 #ifdef ENABLE_LE_CENTRAL 8565 // note: we don't update scan parameters or modify ongoing connection attempts 8566 #endif 8567 } 8568 8569 void hci_le_random_address_set(const bd_addr_t random_address){ 8570 memcpy(hci_stack->le_random_address, random_address, 6); 8571 hci_stack->le_random_address_set = true; 8572 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8573 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8574 if (hci_extended_advertising_supported()){ 8575 // force advertising set creation for LE Set Advertising Set Random Address 8576 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8577 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8578 } 8579 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8580 } 8581 #endif 8582 hci_run(); 8583 } 8584 8585 #endif 8586 8587 uint8_t gap_disconnect(hci_con_handle_t handle){ 8588 hci_connection_t * conn = hci_connection_for_handle(handle); 8589 if (!conn){ 8590 hci_emit_disconnection_complete(handle, 0); 8591 return 0; 8592 } 8593 // ignore if already disconnected 8594 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8595 return 0; 8596 } 8597 conn->state = SEND_DISCONNECT; 8598 hci_run(); 8599 return 0; 8600 } 8601 8602 int gap_read_rssi(hci_con_handle_t con_handle){ 8603 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8604 if (hci_connection == NULL) return 0; 8605 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8606 hci_run(); 8607 return 1; 8608 } 8609 8610 /** 8611 * @brief Get connection type 8612 * @param con_handle 8613 * @result connection_type 8614 */ 8615 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8616 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8617 if (!conn) return GAP_CONNECTION_INVALID; 8618 switch (conn->address_type){ 8619 case BD_ADDR_TYPE_LE_PUBLIC: 8620 case BD_ADDR_TYPE_LE_RANDOM: 8621 return GAP_CONNECTION_LE; 8622 case BD_ADDR_TYPE_SCO: 8623 return GAP_CONNECTION_SCO; 8624 case BD_ADDR_TYPE_ACL: 8625 return GAP_CONNECTION_ACL; 8626 default: 8627 return GAP_CONNECTION_INVALID; 8628 } 8629 } 8630 8631 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8632 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8633 if (!conn) return HCI_ROLE_INVALID; 8634 return (hci_role_t) conn->role; 8635 } 8636 8637 8638 #ifdef ENABLE_CLASSIC 8639 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8640 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8641 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8642 conn->request_role = role; 8643 hci_run(); 8644 return ERROR_CODE_SUCCESS; 8645 } 8646 #endif 8647 8648 #ifdef ENABLE_BLE 8649 8650 uint8_t gap_le_set_phy(hci_con_handle_t con_handle, uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint16_t phy_options){ 8651 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8652 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8653 8654 conn->le_phy_update_all_phys = all_phys; 8655 conn->le_phy_update_tx_phys = tx_phys; 8656 conn->le_phy_update_rx_phys = rx_phys; 8657 conn->le_phy_update_phy_options = (uint8_t) phy_options; 8658 8659 hci_run(); 8660 8661 return 0; 8662 } 8663 8664 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8665 // check if already in list 8666 btstack_linked_list_iterator_t it; 8667 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8668 while (btstack_linked_list_iterator_has_next(&it)) { 8669 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8670 if (entry->address_type != address_type) { 8671 continue; 8672 } 8673 if (memcmp(entry->address, address, 6) != 0) { 8674 continue; 8675 } 8676 8677 // if already on controller: 8678 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 8679 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 8680 // drop remove request 8681 entry->state = LE_WHITELIST_ON_CONTROLLER; 8682 return ERROR_CODE_SUCCESS; 8683 } else { 8684 // disallow as already on controller 8685 return ERROR_CODE_COMMAND_DISALLOWED; 8686 } 8687 } 8688 8689 // assume scheduled to add 8690 return ERROR_CODE_COMMAND_DISALLOWED; 8691 } 8692 8693 // alloc and add to list 8694 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8695 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8696 entry->address_type = address_type; 8697 (void)memcpy(entry->address, address, 6); 8698 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8699 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8700 return ERROR_CODE_SUCCESS; 8701 } 8702 8703 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8704 btstack_linked_list_iterator_t it; 8705 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8706 while (btstack_linked_list_iterator_has_next(&it)){ 8707 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8708 if (entry->address_type != address_type) { 8709 continue; 8710 } 8711 if (memcmp(entry->address, address, 6) != 0) { 8712 continue; 8713 } 8714 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8715 // remove from controller if already present 8716 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8717 } else { 8718 // directly remove entry from whitelist 8719 btstack_linked_list_iterator_remove(&it); 8720 btstack_memory_whitelist_entry_free(entry); 8721 } 8722 return ERROR_CODE_SUCCESS; 8723 } 8724 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8725 } 8726 8727 static void hci_whitelist_clear(void){ 8728 btstack_linked_list_iterator_t it; 8729 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8730 while (btstack_linked_list_iterator_has_next(&it)){ 8731 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8732 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8733 // remove from controller if already present 8734 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8735 continue; 8736 } 8737 // directly remove entry from whitelist 8738 btstack_linked_list_iterator_remove(&it); 8739 btstack_memory_whitelist_entry_free(entry); 8740 } 8741 } 8742 8743 /** 8744 * @brief Clear Whitelist 8745 * @return 0 if ok 8746 */ 8747 uint8_t gap_whitelist_clear(void){ 8748 hci_whitelist_clear(); 8749 hci_run(); 8750 return ERROR_CODE_SUCCESS; 8751 } 8752 8753 /** 8754 * @brief Add Device to Whitelist 8755 * @param address_typ 8756 * @param address 8757 * @return 0 if ok 8758 */ 8759 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8760 uint8_t status = hci_whitelist_add(address_type, address); 8761 if (status){ 8762 return status; 8763 } 8764 hci_run(); 8765 return ERROR_CODE_SUCCESS; 8766 } 8767 8768 /** 8769 * @brief Remove Device from Whitelist 8770 * @param address_typ 8771 * @param address 8772 * @return 0 if ok 8773 */ 8774 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8775 uint8_t status = hci_whitelist_remove(address_type, address); 8776 if (status){ 8777 return status; 8778 } 8779 hci_run(); 8780 return ERROR_CODE_SUCCESS; 8781 } 8782 8783 #ifdef ENABLE_LE_CENTRAL 8784 /** 8785 * @brief Connect with Whitelist 8786 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8787 * @return - if ok 8788 */ 8789 uint8_t gap_connect_with_whitelist(void){ 8790 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8791 return ERROR_CODE_COMMAND_DISALLOWED; 8792 } 8793 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8794 hci_run(); 8795 return ERROR_CODE_SUCCESS; 8796 } 8797 8798 /** 8799 * @brief Auto Connection Establishment - Start Connecting to device 8800 * @param address_typ 8801 * @param address 8802 * @return 0 if ok 8803 */ 8804 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8805 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8806 return ERROR_CODE_COMMAND_DISALLOWED; 8807 } 8808 8809 uint8_t status = hci_whitelist_add(address_type, address); 8810 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8811 return status; 8812 } 8813 8814 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8815 8816 hci_run(); 8817 return ERROR_CODE_SUCCESS; 8818 } 8819 8820 /** 8821 * @brief Auto Connection Establishment - Stop Connecting to device 8822 * @param address_typ 8823 * @param address 8824 * @return 0 if ok 8825 */ 8826 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8827 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8828 return ERROR_CODE_COMMAND_DISALLOWED; 8829 } 8830 8831 hci_whitelist_remove(address_type, address); 8832 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8833 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8834 } 8835 hci_run(); 8836 return 0; 8837 } 8838 8839 /** 8840 * @brief Auto Connection Establishment - Stop everything 8841 * @note Convenience function to stop all active auto connection attempts 8842 */ 8843 uint8_t gap_auto_connection_stop_all(void){ 8844 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8845 return ERROR_CODE_COMMAND_DISALLOWED; 8846 } 8847 hci_whitelist_clear(); 8848 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8849 hci_run(); 8850 return ERROR_CODE_SUCCESS; 8851 } 8852 8853 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8854 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8855 if (!conn) return 0; 8856 return conn->le_connection_interval; 8857 } 8858 #endif 8859 #endif 8860 8861 #ifdef ENABLE_CLASSIC 8862 /** 8863 * @brief Set Extended Inquiry Response data 8864 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8865 * @note has to be done before stack starts up 8866 */ 8867 void gap_set_extended_inquiry_response(const uint8_t * data){ 8868 hci_stack->eir_data = data; 8869 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8870 hci_run(); 8871 } 8872 8873 /** 8874 * @brief Start GAP Classic Inquiry 8875 * @param duration in 1.28s units 8876 * @return 0 if ok 8877 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8878 */ 8879 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8880 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8881 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8882 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8883 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8884 } 8885 hci_stack->inquiry_state = duration_in_1280ms_units; 8886 hci_stack->inquiry_max_period_length = 0; 8887 hci_stack->inquiry_min_period_length = 0; 8888 hci_run(); 8889 return 0; 8890 } 8891 8892 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8893 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8894 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8895 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8896 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8897 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8898 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8899 8900 hci_stack->inquiry_state = duration; 8901 hci_stack->inquiry_max_period_length = max_period_length; 8902 hci_stack->inquiry_min_period_length = min_period_length; 8903 hci_run(); 8904 return 0; 8905 } 8906 8907 /** 8908 * @brief Stop GAP Classic Inquiry 8909 * @return 0 if ok 8910 */ 8911 int gap_inquiry_stop(void){ 8912 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8913 // emit inquiry complete event, before it even started 8914 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8915 hci_emit_event(event, sizeof(event), 1); 8916 return 0; 8917 } 8918 switch (hci_stack->inquiry_state){ 8919 case GAP_INQUIRY_STATE_ACTIVE: 8920 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8921 hci_run(); 8922 return ERROR_CODE_SUCCESS; 8923 case GAP_INQUIRY_STATE_PERIODIC: 8924 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8925 hci_run(); 8926 return ERROR_CODE_SUCCESS; 8927 default: 8928 return ERROR_CODE_COMMAND_DISALLOWED; 8929 } 8930 } 8931 8932 void gap_inquiry_set_lap(uint32_t lap){ 8933 hci_stack->inquiry_lap = lap; 8934 } 8935 8936 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8937 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8938 hci_stack->inquiry_scan_window = inquiry_scan_window; 8939 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8940 hci_run(); 8941 } 8942 8943 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 8944 { 8945 hci_stack->inquiry_tx_power_level = tx_power; 8946 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 8947 hci_run(); 8948 } 8949 8950 8951 /** 8952 * @brief Remote Name Request 8953 * @param addr 8954 * @param page_scan_repetition_mode 8955 * @param clock_offset only used when bit 15 is set 8956 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8957 */ 8958 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8959 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8960 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8961 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8962 hci_stack->remote_name_clock_offset = clock_offset; 8963 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8964 hci_run(); 8965 return 0; 8966 } 8967 8968 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8969 hci_stack->gap_pairing_state = state; 8970 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8971 hci_run(); 8972 return 0; 8973 } 8974 8975 /** 8976 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8977 * @param addr 8978 * @param pin_data 8979 * @param pin_len 8980 * @return 0 if ok 8981 */ 8982 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8983 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8984 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8985 hci_stack->gap_pairing_pin_len = pin_len; 8986 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8987 } 8988 8989 /** 8990 * @brief Legacy Pairing Pin Code Response 8991 * @param addr 8992 * @param pin 8993 * @return 0 if ok 8994 */ 8995 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8996 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8997 } 8998 8999 /** 9000 * @brief Abort Legacy Pairing 9001 * @param addr 9002 * @param pin 9003 * @return 0 if ok 9004 */ 9005 int gap_pin_code_negative(bd_addr_t addr){ 9006 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9007 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9008 } 9009 9010 /** 9011 * @brief SSP Passkey Response 9012 * @param addr 9013 * @param passkey 9014 * @return 0 if ok 9015 */ 9016 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9017 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9018 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9019 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9020 } 9021 9022 /** 9023 * @brief Abort SSP Passkey Entry/Pairing 9024 * @param addr 9025 * @param pin 9026 * @return 0 if ok 9027 */ 9028 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9029 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9030 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9031 } 9032 9033 /** 9034 * @brief Accept SSP Numeric Comparison 9035 * @param addr 9036 * @param passkey 9037 * @return 0 if ok 9038 */ 9039 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9040 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9041 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9042 } 9043 9044 /** 9045 * @brief Abort SSP Numeric Comparison/Pairing 9046 * @param addr 9047 * @param pin 9048 * @return 0 if ok 9049 */ 9050 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9051 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9052 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9053 } 9054 9055 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9056 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9057 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9058 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9059 connectionSetAuthenticationFlags(conn, flag); 9060 hci_run(); 9061 return ERROR_CODE_SUCCESS; 9062 } 9063 #endif 9064 9065 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9066 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9067 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9068 } 9069 9070 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9071 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9072 } 9073 #endif 9074 9075 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9076 /** 9077 * @brief Report Remote OOB Data 9078 * @param bd_addr 9079 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9080 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9081 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9082 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9083 */ 9084 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){ 9085 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9086 if (connection == NULL) { 9087 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9088 } 9089 connection->classic_oob_c_192 = c_192; 9090 connection->classic_oob_r_192 = r_192; 9091 9092 // ignore P-256 if not supported by us 9093 if (hci_stack->secure_connections_active){ 9094 connection->classic_oob_c_256 = c_256; 9095 connection->classic_oob_r_256 = r_256; 9096 } 9097 9098 return ERROR_CODE_SUCCESS; 9099 } 9100 /** 9101 * @brief Generate new OOB data 9102 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9103 */ 9104 void gap_ssp_generate_oob_data(void){ 9105 hci_stack->classic_read_local_oob_data = true; 9106 hci_run(); 9107 } 9108 9109 #endif 9110 9111 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9112 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9113 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9114 if (connection == NULL) { 9115 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9116 } 9117 9118 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9119 connection->link_key_type = type; 9120 9121 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9122 } 9123 9124 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9125 /** 9126 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9127 * @param inquiry_mode see bluetooth_defines.h 9128 */ 9129 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9130 hci_stack->inquiry_mode = inquiry_mode; 9131 } 9132 9133 /** 9134 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9135 */ 9136 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9137 hci_stack->sco_voice_setting = voice_setting; 9138 } 9139 9140 /** 9141 * @brief Get SCO Voice Setting 9142 * @return current voice setting 9143 */ 9144 uint16_t hci_get_sco_voice_setting(void){ 9145 return hci_stack->sco_voice_setting; 9146 } 9147 9148 static int hci_have_usb_transport(void){ 9149 if (!hci_stack->hci_transport) return 0; 9150 const char * transport_name = hci_stack->hci_transport->name; 9151 if (!transport_name) return 0; 9152 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9153 } 9154 9155 /** @brief Get SCO packet length for current SCO Voice setting 9156 * @note Using SCO packets of the exact length is required for USB transfer 9157 * @return Length of SCO packets in bytes (not audio frames) 9158 */ 9159 uint16_t hci_get_sco_packet_length(void){ 9160 uint16_t sco_packet_length = 0; 9161 9162 #ifdef ENABLE_SCO_OVER_HCI 9163 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9164 int multiplier; 9165 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9166 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9167 multiplier = 2; 9168 } else { 9169 multiplier = 1; 9170 } 9171 9172 9173 if (hci_have_usb_transport()){ 9174 // see Core Spec for H2 USB Transfer. 9175 // 3 byte SCO header + 24 bytes per connection 9176 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 9177 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 9178 } else { 9179 // 3 byte SCO header + SCO packet size over the air (60 bytes) 9180 sco_packet_length = 3 + 60 * multiplier; 9181 // assert that it still fits inside an SCO buffer 9182 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9183 sco_packet_length = 3 + 60; 9184 } 9185 } 9186 #endif 9187 9188 #ifdef HAVE_SCO_TRANSPORT 9189 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9190 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 9191 sco_packet_length = 3 + 60 * multiplier; 9192 #endif 9193 return sco_packet_length; 9194 } 9195 9196 /** 9197 * @brief Sets the master/slave policy 9198 * @param policy (0: attempt to become master, 1: let connecting device decide) 9199 */ 9200 void hci_set_master_slave_policy(uint8_t policy){ 9201 hci_stack->master_slave_policy = policy; 9202 } 9203 9204 #endif 9205 9206 HCI_STATE hci_get_state(void){ 9207 return hci_stack->state; 9208 } 9209 9210 #ifdef ENABLE_CLASSIC 9211 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9212 hci_stack->gap_classic_accept_callback = accept_callback; 9213 } 9214 #endif 9215 9216 /** 9217 * @brief Set callback for Bluetooth Hardware Error 9218 */ 9219 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9220 hci_stack->hardware_error_callback = fn; 9221 } 9222 9223 void hci_disconnect_all(void){ 9224 btstack_linked_list_iterator_t it; 9225 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9226 while (btstack_linked_list_iterator_has_next(&it)){ 9227 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9228 if (con->state == SENT_DISCONNECT) continue; 9229 con->state = SEND_DISCONNECT; 9230 } 9231 hci_run(); 9232 } 9233 9234 uint16_t hci_get_manufacturer(void){ 9235 return hci_stack->manufacturer; 9236 } 9237 9238 #ifdef ENABLE_BLE 9239 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9240 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9241 if (!hci_con) return NULL; 9242 return &hci_con->sm_connection; 9243 } 9244 9245 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9246 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9247 #endif 9248 9249 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9250 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9251 if (hci_connection == NULL) return 0; 9252 if (hci_is_le_connection(hci_connection)){ 9253 #ifdef ENABLE_BLE 9254 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9255 if (sm_conn->sm_connection_encrypted) { 9256 return sm_conn->sm_actual_encryption_key_size; 9257 } 9258 #endif 9259 } else { 9260 #ifdef ENABLE_CLASSIC 9261 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9262 return hci_connection->encryption_key_size; 9263 } 9264 #endif 9265 } 9266 return 0; 9267 } 9268 9269 bool gap_authenticated(hci_con_handle_t con_handle){ 9270 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9271 if (hci_connection == NULL) return false; 9272 9273 switch (hci_connection->address_type){ 9274 #ifdef ENABLE_BLE 9275 case BD_ADDR_TYPE_LE_PUBLIC: 9276 case BD_ADDR_TYPE_LE_RANDOM: 9277 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9278 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9279 #endif 9280 #ifdef ENABLE_CLASSIC 9281 case BD_ADDR_TYPE_SCO: 9282 case BD_ADDR_TYPE_ACL: 9283 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9284 #endif 9285 default: 9286 return false; 9287 } 9288 } 9289 9290 bool gap_secure_connection(hci_con_handle_t con_handle){ 9291 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9292 if (hci_connection == NULL) return 0; 9293 9294 switch (hci_connection->address_type){ 9295 #ifdef ENABLE_BLE 9296 case BD_ADDR_TYPE_LE_PUBLIC: 9297 case BD_ADDR_TYPE_LE_RANDOM: 9298 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9299 return hci_connection->sm_connection.sm_connection_sc != 0; 9300 #endif 9301 #ifdef ENABLE_CLASSIC 9302 case BD_ADDR_TYPE_SCO: 9303 case BD_ADDR_TYPE_ACL: 9304 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9305 #endif 9306 default: 9307 return false; 9308 } 9309 } 9310 9311 bool gap_bonded(hci_con_handle_t con_handle){ 9312 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9313 if (hci_connection == NULL) return 0; 9314 9315 #ifdef ENABLE_CLASSIC 9316 link_key_t link_key; 9317 link_key_type_t link_key_type; 9318 #endif 9319 switch (hci_connection->address_type){ 9320 #ifdef ENABLE_BLE 9321 case BD_ADDR_TYPE_LE_PUBLIC: 9322 case BD_ADDR_TYPE_LE_RANDOM: 9323 return hci_connection->sm_connection.sm_le_db_index >= 0; 9324 #endif 9325 #ifdef ENABLE_CLASSIC 9326 case BD_ADDR_TYPE_SCO: 9327 case BD_ADDR_TYPE_ACL: 9328 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9329 #endif 9330 default: 9331 return false; 9332 } 9333 } 9334 9335 #ifdef ENABLE_BLE 9336 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9337 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9338 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9339 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9340 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9341 return sm_conn->sm_connection_authorization_state; 9342 } 9343 #endif 9344 9345 #ifdef ENABLE_CLASSIC 9346 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){ 9347 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9348 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9349 conn->sniff_min_interval = sniff_min_interval; 9350 conn->sniff_max_interval = sniff_max_interval; 9351 conn->sniff_attempt = sniff_attempt; 9352 conn->sniff_timeout = sniff_timeout; 9353 hci_run(); 9354 return 0; 9355 } 9356 9357 /** 9358 * @brief Exit Sniff mode 9359 * @param con_handle 9360 @ @return 0 if ok 9361 */ 9362 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9363 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9364 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9365 conn->sniff_min_interval = 0xffff; 9366 hci_run(); 9367 return 0; 9368 } 9369 9370 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){ 9371 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9372 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9373 conn->sniff_subrating_max_latency = max_latency; 9374 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9375 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9376 hci_run(); 9377 return ERROR_CODE_SUCCESS; 9378 } 9379 9380 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){ 9381 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9382 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9383 conn->qos_service_type = service_type; 9384 conn->qos_token_rate = token_rate; 9385 conn->qos_peak_bandwidth = peak_bandwidth; 9386 conn->qos_latency = latency; 9387 conn->qos_delay_variation = delay_variation; 9388 hci_run(); 9389 return ERROR_CODE_SUCCESS; 9390 } 9391 9392 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9393 hci_stack->new_page_scan_interval = page_scan_interval; 9394 hci_stack->new_page_scan_window = page_scan_window; 9395 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9396 hci_run(); 9397 } 9398 9399 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9400 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9401 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9402 hci_run(); 9403 } 9404 9405 void gap_set_page_timeout(uint16_t page_timeout){ 9406 hci_stack->page_timeout = page_timeout; 9407 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9408 hci_run(); 9409 } 9410 9411 #endif 9412 9413 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9414 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9415 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9416 if (le_device_db_index >= le_device_db_max_count()) return; 9417 uint8_t offset = le_device_db_index >> 3; 9418 uint8_t mask = 1 << (le_device_db_index & 7); 9419 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9420 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9421 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9422 // note: go back to remove entries, otherwise, a remove + add will skip the add 9423 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9424 } 9425 } 9426 9427 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9428 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9429 if (le_device_db_index >= le_device_db_max_count()) return; 9430 uint8_t offset = le_device_db_index >> 3; 9431 uint8_t mask = 1 << (le_device_db_index & 7); 9432 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9433 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9434 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9435 } 9436 } 9437 9438 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9439 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9440 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9441 } 9442 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9443 // restart le resolving list update 9444 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9445 } 9446 return ERROR_CODE_SUCCESS; 9447 } 9448 9449 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9450 hci_stack->le_privacy_mode = privacy_mode; 9451 } 9452 #endif 9453 9454 #ifdef ENABLE_BLE 9455 #ifdef ENABLE_LE_CENTRAL 9456 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9457 9458 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9459 // check if already in list 9460 btstack_linked_list_iterator_t it; 9461 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9462 while (btstack_linked_list_iterator_has_next(&it)) { 9463 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9464 if (entry->sid != advertising_sid) { 9465 continue; 9466 } 9467 if (entry->address_type != address_type) { 9468 continue; 9469 } 9470 if (memcmp(entry->address, address, 6) != 0) { 9471 continue; 9472 } 9473 // disallow if already scheduled to add 9474 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9475 return ERROR_CODE_COMMAND_DISALLOWED; 9476 } 9477 // still on controller, but scheduled to remove -> re-add 9478 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9479 return ERROR_CODE_SUCCESS; 9480 } 9481 // alloc and add to list 9482 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9483 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9484 entry->sid = advertising_sid; 9485 entry->address_type = address_type; 9486 (void)memcpy(entry->address, address, 6); 9487 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9488 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9489 return ERROR_CODE_SUCCESS; 9490 } 9491 9492 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9493 btstack_linked_list_iterator_t it; 9494 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9495 while (btstack_linked_list_iterator_has_next(&it)){ 9496 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9497 if (entry->sid != advertising_sid) { 9498 continue; 9499 } 9500 if (entry->address_type != address_type) { 9501 continue; 9502 } 9503 if (memcmp(entry->address, address, 6) != 0) { 9504 continue; 9505 } 9506 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9507 // remove from controller if already present 9508 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9509 } else { 9510 // directly remove entry from whitelist 9511 btstack_linked_list_iterator_remove(&it); 9512 btstack_memory_periodic_advertiser_list_entry_free(entry); 9513 } 9514 return ERROR_CODE_SUCCESS; 9515 } 9516 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9517 } 9518 9519 static void hci_periodic_advertiser_list_clear(void){ 9520 btstack_linked_list_iterator_t it; 9521 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9522 while (btstack_linked_list_iterator_has_next(&it)){ 9523 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9524 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9525 // remove from controller if already present 9526 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9527 continue; 9528 } 9529 // directly remove entry from whitelist 9530 btstack_linked_list_iterator_remove(&it); 9531 btstack_memory_periodic_advertiser_list_entry_free(entry); 9532 } 9533 } 9534 9535 uint8_t gap_periodic_advertiser_list_clear(void){ 9536 hci_periodic_advertiser_list_clear(); 9537 hci_run(); 9538 return ERROR_CODE_SUCCESS; 9539 } 9540 9541 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9542 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9543 if (status){ 9544 return status; 9545 } 9546 hci_run(); 9547 return ERROR_CODE_SUCCESS; 9548 } 9549 9550 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9551 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9552 if (status){ 9553 return status; 9554 } 9555 hci_run(); 9556 return ERROR_CODE_SUCCESS; 9557 } 9558 9559 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9560 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9561 // abort if already active 9562 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9563 return ERROR_CODE_COMMAND_DISALLOWED; 9564 } 9565 // store request 9566 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9567 hci_stack->le_periodic_sync_options = options; 9568 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9569 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9570 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9571 hci_stack->le_periodic_sync_skip = skip; 9572 hci_stack->le_periodic_sync_timeout = sync_timeout; 9573 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9574 9575 hci_run(); 9576 return ERROR_CODE_SUCCESS; 9577 } 9578 9579 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9580 // abort if not requested 9581 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9582 return ERROR_CODE_COMMAND_DISALLOWED; 9583 } 9584 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9585 hci_run(); 9586 return ERROR_CODE_SUCCESS; 9587 } 9588 9589 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9590 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9591 return ERROR_CODE_COMMAND_DISALLOWED; 9592 } 9593 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9594 hci_run(); 9595 return ERROR_CODE_SUCCESS; 9596 } 9597 9598 #endif 9599 #endif 9600 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9601 static hci_iso_stream_t * 9602 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9603 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9604 if (iso_stream != NULL){ 9605 iso_stream->iso_type = iso_type; 9606 iso_stream->state = state; 9607 iso_stream->group_id = group_id; 9608 iso_stream->stream_id = stream_id; 9609 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9610 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9611 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9612 } 9613 return iso_stream; 9614 } 9615 9616 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9617 btstack_linked_list_iterator_t it; 9618 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9619 while (btstack_linked_list_iterator_has_next(&it)){ 9620 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9621 if (iso_stream->cis_handle == con_handle ) { 9622 return iso_stream; 9623 } 9624 } 9625 return NULL; 9626 } 9627 9628 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9629 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9630 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9631 btstack_memory_hci_iso_stream_free(iso_stream); 9632 } 9633 9634 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9635 btstack_linked_list_iterator_t it; 9636 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9637 while (btstack_linked_list_iterator_has_next(&it)){ 9638 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9639 if ((iso_stream->group_id == group_id) && 9640 (iso_stream->iso_type == iso_type)){ 9641 btstack_linked_list_iterator_remove(&it); 9642 btstack_memory_hci_iso_stream_free(iso_stream); 9643 } 9644 } 9645 } 9646 9647 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9648 btstack_linked_list_iterator_t it; 9649 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9650 while (btstack_linked_list_iterator_has_next(&it)){ 9651 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9652 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9653 (iso_stream->group_id == group_id)){ 9654 btstack_linked_list_iterator_remove(&it); 9655 btstack_memory_hci_iso_stream_free(iso_stream); 9656 } 9657 } 9658 } 9659 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9660 btstack_linked_list_iterator_t it; 9661 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9662 while (btstack_linked_list_iterator_has_next(&it)){ 9663 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9664 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9665 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9666 } 9667 } 9668 } 9669 9670 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9671 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9672 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9673 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9674 return (sdu_len_offset + 2 + sdu_len) == size; 9675 } 9676 9677 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9678 if (hci_stack->iso_packet_handler == NULL) { 9679 return; 9680 } 9681 if (size < 4) { 9682 return; 9683 } 9684 9685 // parse header 9686 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9687 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9688 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9689 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9690 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9691 9692 // assert packet is complete 9693 if ((iso_data_len + 4u) != size){ 9694 return; 9695 } 9696 9697 if ((pb_flag & 0x01) == 0){ 9698 if (pb_flag == 0x02){ 9699 // The ISO_Data_Load field contains a header and a complete SDU. 9700 if (hci_iso_sdu_complete(packet, size)) { 9701 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9702 } 9703 } else { 9704 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9705 if (iso_stream == NULL){ 9706 return; 9707 } 9708 if (size > HCI_ISO_PAYLOAD_SIZE){ 9709 return; 9710 } 9711 memcpy(iso_stream->reassembly_buffer, packet, size); 9712 // fix pb_flag 9713 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9714 iso_stream->reassembly_pos = size; 9715 } 9716 } else { 9717 // iso_data_load contains continuation or last fragment of an SDU 9718 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9719 if (ts_flag != 0){ 9720 return; 9721 } 9722 // append fragment 9723 if (iso_stream == NULL){ 9724 return; 9725 } 9726 if (iso_stream->reassembly_pos == 0){ 9727 return; 9728 } 9729 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9730 // reset reassembly buffer 9731 iso_stream->reassembly_pos = 0; 9732 return; 9733 } 9734 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9735 iso_stream->reassembly_pos += iso_data_len; 9736 9737 // deliver if last fragment and SDU complete 9738 if (pb_flag == 0x03){ 9739 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9740 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9741 } 9742 iso_stream->reassembly_pos = 0; 9743 } 9744 } 9745 } 9746 9747 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9748 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9749 uint16_t pos = 0; 9750 event[pos++] = HCI_EVENT_META_GAP; 9751 event[pos++] = 4 + (2 * big->num_bis); 9752 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9753 event[pos++] = status; 9754 event[pos++] = big->big_handle; 9755 event[pos++] = big->num_bis; 9756 uint8_t i; 9757 for (i=0;i<big->num_bis;i++){ 9758 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9759 pos += 2; 9760 } 9761 hci_emit_event(event, pos, 0); 9762 } 9763 9764 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9765 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9766 uint16_t pos = 0; 9767 event[pos++] = HCI_EVENT_META_GAP; 9768 event[pos++] = 4 + (2 * cig->num_cis); 9769 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9770 event[pos++] = status; 9771 event[pos++] = cig->cig_id; 9772 event[pos++] = cig->num_cis; 9773 uint8_t i; 9774 for (i=0;i<cig->num_cis;i++){ 9775 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9776 pos += 2; 9777 } 9778 hci_emit_event(event, pos, 0); 9779 } 9780 9781 static void hci_emit_cis_created(uint8_t status, uint8_t cig_id, uint8_t cis_id, hci_con_handle_t cis_con_handle, 9782 hci_con_handle_t acl_con_handle) { 9783 uint8_t event [10]; 9784 uint16_t pos = 0; 9785 event[pos++] = HCI_EVENT_META_GAP; 9786 event[pos++] = 8; 9787 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9788 event[pos++] = status; 9789 event[pos++] = cig_id; 9790 event[pos++] = cis_id; 9791 little_endian_store_16(event, pos, cis_con_handle); 9792 pos += 2; 9793 little_endian_store_16(event, pos, acl_con_handle); 9794 pos += 2; 9795 hci_emit_event(event, pos, 0); 9796 } 9797 9798 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 9799 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 9800 // cache data before finalizing struct 9801 uint8_t cig_id = iso_stream->group_id; 9802 uint8_t cis_id = iso_stream->stream_id; 9803 hci_con_handle_t cis_handle = iso_stream->cis_handle; 9804 hci_con_handle_t acl_handle = iso_stream->acl_handle; 9805 if (status != ERROR_CODE_SUCCESS){ 9806 hci_iso_stream_finalize(iso_stream); 9807 } 9808 hci_emit_cis_created(status, cig_id, cis_id, cis_handle, acl_handle); 9809 } 9810 9811 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9812 uint8_t event [4]; 9813 uint16_t pos = 0; 9814 event[pos++] = HCI_EVENT_META_GAP; 9815 event[pos++] = 2; 9816 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9817 event[pos++] = big->big_handle; 9818 hci_emit_event(event, pos, 0); 9819 } 9820 9821 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9822 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9823 uint16_t pos = 0; 9824 event[pos++] = HCI_EVENT_META_GAP; 9825 event[pos++] = 4; 9826 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9827 event[pos++] = status; 9828 event[pos++] = big_sync->big_handle; 9829 event[pos++] = big_sync->num_bis; 9830 uint8_t i; 9831 for (i=0;i<big_sync->num_bis;i++){ 9832 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9833 pos += 2; 9834 } 9835 hci_emit_event(event, pos, 0); 9836 } 9837 9838 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9839 uint8_t event [4]; 9840 uint16_t pos = 0; 9841 event[pos++] = HCI_EVENT_META_GAP; 9842 event[pos++] = 2; 9843 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9844 event[pos++] = big_handle; 9845 hci_emit_event(event, pos, 0); 9846 } 9847 9848 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9849 uint8_t event[6]; 9850 uint16_t pos = 0; 9851 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9852 event[pos++] = sizeof(event) - 2; 9853 event[pos++] = big->big_handle; 9854 event[pos++] = bis_index; 9855 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9856 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9857 } 9858 9859 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9860 uint8_t event[4]; 9861 uint16_t pos = 0; 9862 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9863 event[pos++] = sizeof(event) - 2; 9864 little_endian_store_16(event, pos, cis_con_handle); 9865 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9866 } 9867 9868 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9869 btstack_linked_list_iterator_t it; 9870 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9871 while (btstack_linked_list_iterator_has_next(&it)){ 9872 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9873 if ( big->big_handle == big_handle ) { 9874 return big; 9875 } 9876 } 9877 return NULL; 9878 } 9879 9880 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9881 btstack_linked_list_iterator_t it; 9882 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9883 while (btstack_linked_list_iterator_has_next(&it)){ 9884 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9885 if ( big_sync->big_handle == big_handle ) { 9886 return big_sync; 9887 } 9888 } 9889 return NULL; 9890 } 9891 9892 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9893 hci_stack->iso_packets_to_queue = num_packets; 9894 } 9895 9896 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9897 btstack_linked_list_iterator_t it; 9898 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9899 while (btstack_linked_list_iterator_has_next(&it)){ 9900 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9901 if ( cig->cig_id == cig_id ) { 9902 return cig; 9903 } 9904 } 9905 return NULL; 9906 } 9907 9908 static void hci_iso_notify_can_send_now(void){ 9909 9910 // BIG 9911 9912 btstack_linked_list_iterator_t it; 9913 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9914 while (btstack_linked_list_iterator_has_next(&it)){ 9915 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9916 // track number completed packet timestamps 9917 if (big->num_completed_timestamp_current_valid){ 9918 big->num_completed_timestamp_current_valid = false; 9919 if (big->num_completed_timestamp_previous_valid){ 9920 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9921 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9922 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9923 big->num_completed_timestamp_previous_ms); 9924 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9925 // to catch up, skip packet on all BIS 9926 uint8_t i; 9927 for (i=0;i<big->num_bis;i++){ 9928 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9929 if (iso_stream){ 9930 iso_stream->num_packets_to_skip++; 9931 } 9932 } 9933 } 9934 } 9935 big->num_completed_timestamp_previous_valid = true; 9936 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9937 } 9938 9939 if (big->can_send_now_requested){ 9940 // check if no outgoing iso packets pending and no can send now have to be emitted 9941 uint8_t i; 9942 bool can_send = true; 9943 uint8_t num_iso_queued_minimum = 0; 9944 for (i=0;i<big->num_bis;i++){ 9945 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9946 if (iso_stream == NULL) continue; 9947 // handle case where individual ISO packet was sent too late: 9948 // for each additionally queued packet, a new one needs to get skipped 9949 if (i==0){ 9950 num_iso_queued_minimum = iso_stream->num_packets_sent; 9951 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 9952 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 9953 iso_stream->num_packets_to_skip += num_packets_to_skip; 9954 iso_stream->num_packets_sent -= num_packets_to_skip; 9955 } 9956 // check if we can send now 9957 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 9958 can_send = false; 9959 break; 9960 } 9961 } 9962 if (can_send){ 9963 // propagate can send now to individual streams 9964 big->can_send_now_requested = false; 9965 for (i=0;i<big->num_bis;i++){ 9966 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9967 iso_stream->emit_ready_to_send = true; 9968 } 9969 } 9970 } 9971 } 9972 9973 if (hci_stack->hci_packet_buffer_reserved) return; 9974 9975 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9976 while (btstack_linked_list_iterator_has_next(&it)){ 9977 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9978 // report bis ready 9979 uint8_t i; 9980 for (i=0;i<big->num_bis;i++){ 9981 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9982 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9983 iso_stream->emit_ready_to_send = false; 9984 hci_emit_bis_can_send_now(big, i); 9985 break; 9986 } 9987 } 9988 } 9989 9990 // CIS 9991 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9992 while (btstack_linked_list_iterator_has_next(&it)) { 9993 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9994 if ((iso_stream->can_send_now_requested) && 9995 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 9996 iso_stream->can_send_now_requested = false; 9997 hci_emit_cis_can_send_now(iso_stream->cis_handle); 9998 } 9999 } 10000 } 10001 10002 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10003 if (hci_big_for_handle(big_params->big_handle) != NULL){ 10004 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10005 } 10006 if (big_params->num_bis == 0){ 10007 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10008 } 10009 if (big_params->num_bis > MAX_NR_BIS){ 10010 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10011 } 10012 10013 // reserve ISO Streams 10014 uint8_t i; 10015 uint8_t status = ERROR_CODE_SUCCESS; 10016 for (i=0;i<big_params->num_bis;i++){ 10017 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_params->big_handle, i); 10018 if (iso_stream == NULL) { 10019 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10020 break; 10021 } 10022 } 10023 10024 // free structs on error 10025 if (status != ERROR_CODE_SUCCESS){ 10026 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 10027 return status; 10028 } 10029 10030 le_audio_big_t * big = storage; 10031 big->big_handle = big_params->big_handle; 10032 big->params = big_params; 10033 big->state = LE_AUDIO_BIG_STATE_CREATE; 10034 big->num_bis = big_params->num_bis; 10035 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10036 10037 hci_run(); 10038 10039 return ERROR_CODE_SUCCESS; 10040 } 10041 10042 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10043 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 10044 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10045 } 10046 if (big_sync_params->num_bis == 0){ 10047 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10048 } 10049 if (big_sync_params->num_bis > MAX_NR_BIS){ 10050 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10051 } 10052 10053 le_audio_big_sync_t * big_sync = storage; 10054 big_sync->big_handle = big_sync_params->big_handle; 10055 big_sync->params = big_sync_params; 10056 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10057 big_sync->num_bis = big_sync_params->num_bis; 10058 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10059 10060 hci_run(); 10061 10062 return ERROR_CODE_SUCCESS; 10063 } 10064 10065 uint8_t gap_big_terminate(uint8_t big_handle){ 10066 le_audio_big_t * big = hci_big_for_handle(big_handle); 10067 if (big == NULL){ 10068 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10069 } 10070 switch (big->state){ 10071 case LE_AUDIO_BIG_STATE_CREATE: 10072 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10073 hci_emit_big_terminated(big); 10074 break; 10075 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10076 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10077 break; 10078 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10079 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10080 case LE_AUDIO_BIG_STATE_ACTIVE: 10081 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10082 hci_run(); 10083 break; 10084 default: 10085 return ERROR_CODE_COMMAND_DISALLOWED; 10086 } 10087 return ERROR_CODE_SUCCESS; 10088 } 10089 10090 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10091 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10092 if (big_sync == NULL){ 10093 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10094 } 10095 switch (big_sync->state){ 10096 case LE_AUDIO_BIG_STATE_CREATE: 10097 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10098 hci_emit_big_sync_stopped(big_handle); 10099 break; 10100 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10101 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10102 break; 10103 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10104 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10105 case LE_AUDIO_BIG_STATE_ACTIVE: 10106 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10107 hci_run(); 10108 break; 10109 default: 10110 return ERROR_CODE_COMMAND_DISALLOWED; 10111 } 10112 return ERROR_CODE_SUCCESS; 10113 } 10114 10115 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10116 le_audio_big_t * big = hci_big_for_handle(big_handle); 10117 if (big == NULL){ 10118 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10119 } 10120 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10121 return ERROR_CODE_COMMAND_DISALLOWED; 10122 } 10123 big->can_send_now_requested = true; 10124 hci_iso_notify_can_send_now(); 10125 return ERROR_CODE_SUCCESS; 10126 } 10127 10128 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10129 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10130 if (iso_stream == NULL){ 10131 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10132 } 10133 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10134 return ERROR_CODE_COMMAND_DISALLOWED; 10135 } 10136 iso_stream->can_send_now_requested = true; 10137 hci_iso_notify_can_send_now(); 10138 return ERROR_CODE_SUCCESS; 10139 } 10140 10141 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10142 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10143 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10144 } 10145 if (cig_params->num_cis == 0){ 10146 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10147 } 10148 if (cig_params->num_cis > MAX_NR_BIS){ 10149 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10150 } 10151 10152 // reserve ISO Streams 10153 uint8_t i; 10154 uint8_t status = ERROR_CODE_SUCCESS; 10155 for (i=0;i<cig_params->num_cis;i++){ 10156 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10157 if (iso_stream == NULL) { 10158 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10159 break; 10160 } 10161 } 10162 10163 // free structs on error 10164 if (status != ERROR_CODE_SUCCESS){ 10165 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10166 return status; 10167 } 10168 10169 le_audio_cig_t * cig = storage; 10170 cig->cig_id = cig_params->cig_id; 10171 cig->num_cis = cig_params->num_cis; 10172 cig->params = cig_params; 10173 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10174 for (i=0;i<cig->num_cis;i++){ 10175 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10176 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10177 cig->cis_setup_active[i] = false; 10178 cig->cis_established[i] = false; 10179 } 10180 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10181 10182 hci_run(); 10183 10184 return ERROR_CODE_SUCCESS; 10185 } 10186 10187 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10188 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10189 if (cig == NULL){ 10190 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10191 } 10192 10193 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10194 return ERROR_CODE_COMMAND_DISALLOWED; 10195 } 10196 10197 // store ACL Connection Handles 10198 uint8_t i; 10199 for (i=0;i<cig->num_cis;i++){ 10200 // check that all con handles exist and store 10201 hci_con_handle_t cis_handle = cis_con_handles[i]; 10202 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10203 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10204 } 10205 uint8_t j; 10206 bool found = false; 10207 for (j=0;j<cig->num_cis;j++){ 10208 if (cig->cis_con_handles[j] == cis_handle){ 10209 cig->acl_con_handles[j] = acl_con_handles[j]; 10210 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10211 btstack_assert(iso_stream != NULL); 10212 iso_stream->acl_handle = acl_con_handles[j]; 10213 found = true; 10214 break; 10215 } 10216 } 10217 if (!found){ 10218 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10219 } 10220 } 10221 10222 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10223 hci_run(); 10224 10225 return ERROR_CODE_SUCCESS; 10226 } 10227 10228 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10229 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10230 if (iso_stream == NULL){ 10231 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10232 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10233 } 10234 10235 // set next state and continue 10236 iso_stream->state = state; 10237 hci_run(); 10238 return ERROR_CODE_SUCCESS; 10239 } 10240 10241 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10242 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10243 } 10244 10245 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10246 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10247 } 10248 10249 10250 #endif 10251 #endif /* ENABLE_BLE */ 10252 10253 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10254 void hci_setup_test_connections_fuzz(void){ 10255 hci_connection_t * conn; 10256 10257 // default address: 66:55:44:33:00:01 10258 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10259 10260 // setup Controller info 10261 hci_stack->num_cmd_packets = 255; 10262 hci_stack->acl_packets_total_num = 255; 10263 10264 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10265 addr[5] = 0x01; 10266 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10267 conn->con_handle = addr[5]; 10268 conn->state = RECEIVED_CONNECTION_REQUEST; 10269 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10270 10271 // setup incoming Classic SCO connection with con handle 0x0002 10272 addr[5] = 0x02; 10273 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10274 conn->con_handle = addr[5]; 10275 conn->state = RECEIVED_CONNECTION_REQUEST; 10276 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10277 10278 // setup ready Classic ACL connection with con handle 0x0003 10279 addr[5] = 0x03; 10280 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10281 conn->con_handle = addr[5]; 10282 conn->state = OPEN; 10283 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10284 10285 // setup ready Classic SCO connection with con handle 0x0004 10286 addr[5] = 0x04; 10287 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10288 conn->con_handle = addr[5]; 10289 conn->state = OPEN; 10290 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10291 10292 // setup ready LE ACL connection with con handle 0x005 and public address 10293 addr[5] = 0x05; 10294 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10295 conn->con_handle = addr[5]; 10296 conn->state = OPEN; 10297 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10298 conn->sm_connection.sm_connection_encrypted = 1; 10299 } 10300 10301 void hci_free_connections_fuzz(void){ 10302 btstack_linked_list_iterator_t it; 10303 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10304 while (btstack_linked_list_iterator_has_next(&it)){ 10305 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10306 btstack_linked_list_iterator_remove(&it); 10307 btstack_memory_hci_connection_free(con); 10308 } 10309 } 10310 void hci_simulate_working_fuzz(void){ 10311 hci_stack->le_scanning_param_update = false; 10312 hci_init_done(); 10313 hci_stack->num_cmd_packets = 255; 10314 } 10315 #endif 10316