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 256 hci_emit_cis_created(uint8_t cig_id, hci_con_handle_t cis_con_handle, uint8_t status); 257 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 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 * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 315 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 316 317 hci_connection_t * conn = btstack_memory_hci_connection_get(); 318 if (!conn) return NULL; 319 hci_connection_init(conn); 320 321 bd_addr_copy(conn->address, addr); 322 conn->address_type = addr_type; 323 conn->con_handle = HCI_CON_HANDLE_INVALID; 324 conn->role = HCI_ROLE_INVALID; 325 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 326 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 327 #endif 328 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 329 330 return conn; 331 } 332 333 334 /** 335 * get le connection parameter range 336 * 337 * @return le connection parameter range struct 338 */ 339 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 340 *range = hci_stack->le_connection_parameter_range; 341 } 342 343 /** 344 * set le connection parameter range 345 * 346 */ 347 348 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 349 hci_stack->le_connection_parameter_range = *range; 350 } 351 352 /** 353 * @brief Test if connection parameters are inside in existing rage 354 * @param conn_interval_min (unit: 1.25ms) 355 * @param conn_interval_max (unit: 1.25ms) 356 * @param conn_latency 357 * @param supervision_timeout (unit: 10ms) 358 * @return 1 if included 359 */ 360 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){ 361 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 362 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 363 364 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 365 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 366 367 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 368 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 369 370 return 1; 371 } 372 373 /** 374 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 375 * @note: default: 1 376 * @param max_peripheral_connections 377 */ 378 #ifdef ENABLE_LE_PERIPHERAL 379 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 380 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 381 } 382 #endif 383 384 /** 385 * get hci connections iterator 386 * 387 * @return hci connections iterator 388 */ 389 390 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 391 btstack_linked_list_iterator_init(it, &hci_stack->connections); 392 } 393 394 /** 395 * get connection for a given handle 396 * 397 * @return connection OR NULL, if not found 398 */ 399 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 400 btstack_linked_list_iterator_t it; 401 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 402 while (btstack_linked_list_iterator_has_next(&it)){ 403 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 404 if ( item->con_handle == con_handle ) { 405 return item; 406 } 407 } 408 return NULL; 409 } 410 411 /** 412 * get connection for given address 413 * 414 * @return connection OR NULL, if not found 415 */ 416 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 417 btstack_linked_list_iterator_t it; 418 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 419 while (btstack_linked_list_iterator_has_next(&it)){ 420 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 421 if (connection->address_type != addr_type) continue; 422 if (memcmp(addr, connection->address, 6) != 0) continue; 423 return connection; 424 } 425 return NULL; 426 } 427 428 #ifdef ENABLE_CLASSIC 429 430 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 431 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 432 } 433 434 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 435 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 436 } 437 438 #ifdef ENABLE_SCO_OVER_HCI 439 static int hci_number_sco_connections(void){ 440 int connections = 0; 441 btstack_linked_list_iterator_t it; 442 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 443 while (btstack_linked_list_iterator_has_next(&it)){ 444 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 445 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 446 connections++; 447 } 448 return connections; 449 } 450 #endif 451 452 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 453 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 454 #ifdef HAVE_EMBEDDED_TICK 455 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 456 // connections might be timed out 457 hci_emit_l2cap_check_timeout(connection); 458 } 459 #else 460 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 461 // connections might be timed out 462 hci_emit_l2cap_check_timeout(connection); 463 } 464 #endif 465 } 466 467 static void hci_connection_timestamp(hci_connection_t *connection){ 468 #ifdef HAVE_EMBEDDED_TICK 469 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 470 #else 471 connection->timestamp = btstack_run_loop_get_time_ms(); 472 #endif 473 } 474 475 /** 476 * add authentication flags and reset timer 477 * @note: assumes classic connection 478 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 479 */ 480 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 481 bd_addr_t addr; 482 reverse_bd_addr(bd_addr, addr); 483 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 484 if (conn) { 485 connectionSetAuthenticationFlags(conn, flags); 486 hci_connection_timestamp(conn); 487 } 488 } 489 490 static bool hci_pairing_active(hci_connection_t * hci_connection){ 491 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 492 } 493 494 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 495 if (hci_pairing_active(hci_connection)) return; 496 if (ssp){ 497 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 498 } else { 499 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 500 } 501 // if we are initiator, we have sent an HCI Authenticate Request 502 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 503 504 // if we are responder, use minimal service security level as required level 505 if (!initiator){ 506 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); 507 } 508 509 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 510 511 uint8_t event[12]; 512 event[0] = GAP_EVENT_PAIRING_STARTED; 513 event[1] = 10; 514 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 515 reverse_bd_addr(hci_connection->address, &event[4]); 516 event[10] = (uint8_t) ssp; 517 event[11] = (uint8_t) initiator; 518 hci_emit_event(event, sizeof(event), 1); 519 } 520 521 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 522 hci_connection->requested_security_level = LEVEL_0; 523 if (!hci_pairing_active(hci_connection)) return; 524 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 525 #ifdef ENABLE_CLASSIC_PAIRING_OOB 526 hci_connection->classic_oob_c_192 = NULL; 527 hci_connection->classic_oob_r_192 = NULL; 528 hci_connection->classic_oob_c_256 = NULL; 529 hci_connection->classic_oob_r_256 = NULL; 530 #endif 531 log_info("pairing complete, status %02x", status); 532 533 uint8_t event[11]; 534 event[0] = GAP_EVENT_PAIRING_COMPLETE; 535 event[1] = 9; 536 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 537 reverse_bd_addr(hci_connection->address, &event[4]); 538 event[10] = status; 539 hci_emit_event(event, sizeof(event), 1); 540 541 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 542 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 543 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 544 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 545 hci_connection->bonding_status = status; 546 } 547 } 548 549 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 550 hci_connection_t * conn = hci_connection_for_handle(handle); 551 if (!conn) return false; 552 return hci_pairing_active(conn); 553 } 554 555 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 556 if (!hci_stack->link_key_db) return; 557 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 558 hci_stack->link_key_db->delete_link_key(addr); 559 } 560 561 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 562 if (!hci_stack->link_key_db) return; 563 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 564 hci_stack->link_key_db->put_link_key(addr, link_key, type); 565 } 566 567 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 568 if (!hci_stack->link_key_db) return false; 569 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 570 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 571 return result; 572 } 573 574 void gap_delete_all_link_keys(void){ 575 bd_addr_t addr; 576 link_key_t link_key; 577 link_key_type_t type; 578 btstack_link_key_iterator_t it; 579 int ok = gap_link_key_iterator_init(&it); 580 if (!ok) { 581 log_error("could not initialize iterator"); 582 return; 583 } 584 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 585 gap_drop_link_key_for_bd_addr(addr); 586 } 587 gap_link_key_iterator_done(&it); 588 } 589 590 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 591 if (!hci_stack->link_key_db) return 0; 592 if (!hci_stack->link_key_db->iterator_init) return 0; 593 return hci_stack->link_key_db->iterator_init(it); 594 } 595 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){ 596 if (!hci_stack->link_key_db) return 0; 597 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 598 } 599 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 600 if (!hci_stack->link_key_db) return; 601 hci_stack->link_key_db->iterator_done(it); 602 } 603 #endif 604 605 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 606 switch (address_type){ 607 case BD_ADDR_TYPE_LE_PUBLIC: 608 case BD_ADDR_TYPE_LE_RANDOM: 609 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 610 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 611 return true; 612 default: 613 return false; 614 } 615 } 616 617 static int hci_is_le_connection(hci_connection_t * connection){ 618 return hci_is_le_connection_type(connection->address_type); 619 } 620 621 /** 622 * count connections 623 */ 624 static int nr_hci_connections(void){ 625 int count = 0; 626 btstack_linked_item_t *it; 627 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 628 count++; 629 } 630 return count; 631 } 632 633 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 634 635 unsigned int num_packets_sent_classic = 0; 636 unsigned int num_packets_sent_le = 0; 637 638 btstack_linked_item_t *it; 639 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 640 hci_connection_t * connection = (hci_connection_t *) it; 641 if (hci_is_le_connection(connection)){ 642 num_packets_sent_le += connection->num_packets_sent; 643 } 644 if (connection->address_type == BD_ADDR_TYPE_ACL){ 645 num_packets_sent_classic += connection->num_packets_sent; 646 } 647 } 648 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 649 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 650 int free_slots_le = 0; 651 652 if (free_slots_classic < 0){ 653 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); 654 return 0; 655 } 656 657 if (hci_stack->le_acl_packets_total_num){ 658 // if we have LE slots, they are used 659 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 660 if (free_slots_le < 0){ 661 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); 662 return 0; 663 } 664 } else { 665 // otherwise, classic slots are used for LE, too 666 free_slots_classic -= num_packets_sent_le; 667 if (free_slots_classic < 0){ 668 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); 669 return 0; 670 } 671 } 672 673 switch (address_type){ 674 case BD_ADDR_TYPE_UNKNOWN: 675 log_error("hci_number_free_acl_slots: unknown address type"); 676 return 0; 677 678 case BD_ADDR_TYPE_ACL: 679 return (uint16_t) free_slots_classic; 680 681 default: 682 if (hci_stack->le_acl_packets_total_num > 0){ 683 return (uint16_t) free_slots_le; 684 } 685 return (uint16_t) free_slots_classic; 686 } 687 } 688 689 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 690 // get connection type 691 hci_connection_t * connection = hci_connection_for_handle(con_handle); 692 if (!connection){ 693 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 694 return 0; 695 } 696 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 697 } 698 699 #ifdef ENABLE_CLASSIC 700 static int hci_number_free_sco_slots(void){ 701 unsigned int num_sco_packets_sent = 0; 702 btstack_linked_item_t *it; 703 if (hci_stack->synchronous_flow_control_enabled){ 704 // explicit flow control 705 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 706 hci_connection_t * connection = (hci_connection_t *) it; 707 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 708 num_sco_packets_sent += connection->num_packets_sent; 709 } 710 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 711 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 712 return 0; 713 } 714 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 715 } else { 716 // implicit flow control -- TODO 717 int num_ready = 0; 718 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 719 hci_connection_t * connection = (hci_connection_t *) it; 720 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 721 if (connection->sco_tx_ready == 0) continue; 722 num_ready++; 723 } 724 return num_ready; 725 } 726 } 727 #endif 728 729 // only used to send HCI Host Number Completed Packets 730 static int hci_can_send_comand_packet_transport(void){ 731 if (hci_stack->hci_packet_buffer_reserved) return 0; 732 733 // check for async hci transport implementations 734 if (hci_stack->hci_transport->can_send_packet_now){ 735 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 736 return 0; 737 } 738 } 739 return 1; 740 } 741 742 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 743 bool hci_can_send_command_packet_now(void){ 744 if (hci_can_send_comand_packet_transport() == 0) return false; 745 return hci_stack->num_cmd_packets > 0u; 746 } 747 748 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 749 // check for async hci transport implementations 750 if (!hci_stack->hci_transport->can_send_packet_now) return true; 751 return hci_stack->hci_transport->can_send_packet_now(packet_type); 752 } 753 754 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 755 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 756 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 757 } 758 759 bool hci_can_send_acl_le_packet_now(void){ 760 if (hci_stack->hci_packet_buffer_reserved) return false; 761 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 762 } 763 764 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 765 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 766 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 767 } 768 769 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 770 if (hci_stack->hci_packet_buffer_reserved) return false; 771 return hci_can_send_prepared_acl_packet_now(con_handle); 772 } 773 774 #ifdef ENABLE_CLASSIC 775 bool hci_can_send_acl_classic_packet_now(void){ 776 if (hci_stack->hci_packet_buffer_reserved) return false; 777 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 778 } 779 780 bool hci_can_send_prepared_sco_packet_now(void){ 781 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 782 if (hci_have_usb_transport()){ 783 return hci_stack->sco_can_send_now; 784 } else { 785 return hci_number_free_sco_slots() > 0; 786 } 787 } 788 789 bool hci_can_send_sco_packet_now(void){ 790 if (hci_stack->hci_packet_buffer_reserved) return false; 791 return hci_can_send_prepared_sco_packet_now(); 792 } 793 794 void hci_request_sco_can_send_now_event(void){ 795 hci_stack->sco_waiting_for_can_send_now = 1; 796 hci_notify_if_sco_can_send_now(); 797 } 798 #endif 799 800 // used for internal checks in l2cap.c 801 bool hci_is_packet_buffer_reserved(void){ 802 return hci_stack->hci_packet_buffer_reserved; 803 } 804 805 // reserves outgoing packet buffer. 806 // @return 1 if successful 807 bool hci_reserve_packet_buffer(void){ 808 if (hci_stack->hci_packet_buffer_reserved) { 809 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 810 return false; 811 } 812 hci_stack->hci_packet_buffer_reserved = true; 813 return true; 814 } 815 816 void hci_release_packet_buffer(void){ 817 hci_stack->hci_packet_buffer_reserved = false; 818 } 819 820 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 821 static int hci_transport_synchronous(void){ 822 return hci_stack->hci_transport->can_send_packet_now == NULL; 823 } 824 825 // used for debugging 826 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 827 static void hci_controller_dump_packets(void){ 828 // format: "{handle:04x}:{count:02d} " 829 char summaries[3][7 * 8 + 1]; 830 uint16_t totals[3]; 831 uint8_t index; 832 for (index = 0 ; index < 3 ; index++){ 833 summaries[index][0] = 0; 834 totals[index] = 0; 835 } 836 btstack_linked_item_t *it; 837 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 838 hci_connection_t * connection = (hci_connection_t *) it; 839 switch (connection->address_type){ 840 case BD_ADDR_TYPE_ACL: 841 index = 0; 842 break; 843 case BD_ADDR_TYPE_SCO: 844 index = 2; 845 break; 846 default: 847 index = 1; 848 break; 849 } 850 totals[index] += connection->num_packets_sent; 851 char item_text[10]; 852 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 853 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 854 } 855 for (index = 0 ; index < 3 ; index++){ 856 if (summaries[index][0] == 0){ 857 summaries[index][0] = '-'; 858 summaries[index][1] = 0; 859 } 860 } 861 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]); 862 } 863 #endif 864 865 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 866 867 // 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); 868 869 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 870 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 871 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 872 max_acl_data_packet_length = hci_stack->le_data_packets_length; 873 } 874 875 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 876 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 877 max_acl_data_packet_length = connection->le_max_tx_octets; 878 } 879 #endif 880 881 log_debug("hci_send_acl_packet_fragments entered"); 882 883 uint8_t status = ERROR_CODE_SUCCESS; 884 // multiple packets could be send on a synchronous HCI transport 885 while (true){ 886 887 log_debug("hci_send_acl_packet_fragments loop entered"); 888 889 // get current data 890 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 891 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 892 bool more_fragments = false; 893 894 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 895 if (current_acl_data_packet_length > max_acl_data_packet_length){ 896 more_fragments = true; 897 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 898 } 899 900 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 901 if (acl_header_pos > 0u){ 902 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 903 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 904 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 905 } 906 907 // update header len 908 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 909 910 // count packet 911 connection->num_packets_sent++; 912 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 913 914 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 915 if (more_fragments){ 916 // update start of next fragment to send 917 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 918 } else { 919 // done 920 hci_stack->acl_fragmentation_pos = 0; 921 hci_stack->acl_fragmentation_total_size = 0; 922 } 923 924 // send packet 925 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 926 const int size = current_acl_data_packet_length + 4; 927 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 928 hci_stack->acl_fragmentation_tx_active = 1; 929 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 930 if (err != 0){ 931 // no error from HCI Transport expected 932 status = ERROR_CODE_HARDWARE_FAILURE; 933 } 934 935 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 936 hci_controller_dump_packets(); 937 #endif 938 939 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 940 941 // done yet? 942 if (!more_fragments) break; 943 944 // can send more? 945 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 946 } 947 948 log_debug("hci_send_acl_packet_fragments loop over"); 949 950 // release buffer now for synchronous transport 951 if (hci_transport_synchronous()){ 952 hci_stack->acl_fragmentation_tx_active = 0; 953 hci_release_packet_buffer(); 954 hci_emit_transport_packet_sent(); 955 } 956 957 return status; 958 } 959 960 // pre: caller has reserved the packet buffer 961 uint8_t hci_send_acl_packet_buffer(int size){ 962 btstack_assert(hci_stack->hci_packet_buffer_reserved); 963 964 uint8_t * packet = hci_stack->hci_packet_buffer; 965 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 966 967 // check for free places on Bluetooth module 968 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 969 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 970 hci_release_packet_buffer(); 971 hci_emit_transport_packet_sent(); 972 return BTSTACK_ACL_BUFFERS_FULL; 973 } 974 975 hci_connection_t *connection = hci_connection_for_handle( con_handle); 976 if (!connection) { 977 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 978 hci_release_packet_buffer(); 979 hci_emit_transport_packet_sent(); 980 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 981 } 982 983 #ifdef ENABLE_CLASSIC 984 hci_connection_timestamp(connection); 985 #endif 986 987 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 988 989 // setup data 990 hci_stack->acl_fragmentation_total_size = size; 991 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 992 993 return hci_send_acl_packet_fragments(connection); 994 } 995 996 #ifdef ENABLE_CLASSIC 997 // pre: caller has reserved the packet buffer 998 uint8_t hci_send_sco_packet_buffer(int size){ 999 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1000 1001 uint8_t * packet = hci_stack->hci_packet_buffer; 1002 1003 // skip checks in loopback mode 1004 if (!hci_stack->loopback_mode){ 1005 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1006 1007 // check for free places on Bluetooth module 1008 if (!hci_can_send_prepared_sco_packet_now()) { 1009 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1010 hci_release_packet_buffer(); 1011 hci_emit_transport_packet_sent(); 1012 return BTSTACK_ACL_BUFFERS_FULL; 1013 } 1014 1015 // track send packet in connection struct 1016 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1017 if (!connection) { 1018 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1019 hci_release_packet_buffer(); 1020 hci_emit_transport_packet_sent(); 1021 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1022 } 1023 1024 if (hci_have_usb_transport()){ 1025 // token used 1026 hci_stack->sco_can_send_now = false; 1027 } else { 1028 if (hci_stack->synchronous_flow_control_enabled){ 1029 connection->num_packets_sent++; 1030 } else { 1031 connection->sco_tx_ready--; 1032 } 1033 } 1034 } 1035 1036 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1037 1038 #ifdef HAVE_SCO_TRANSPORT 1039 hci_stack->sco_transport->send_packet(packet, size); 1040 hci_release_packet_buffer(); 1041 hci_emit_transport_packet_sent(); 1042 1043 return 0; 1044 #else 1045 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1046 if (hci_transport_synchronous()){ 1047 hci_release_packet_buffer(); 1048 hci_emit_transport_packet_sent(); 1049 } 1050 1051 if (err != 0){ 1052 return ERROR_CODE_HARDWARE_FAILURE; 1053 } 1054 return ERROR_CODE_SUCCESS; 1055 #endif 1056 } 1057 #endif 1058 1059 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1060 static uint8_t hci_send_iso_packet_fragments(void){ 1061 1062 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1063 uint8_t status = ERROR_CODE_SUCCESS; 1064 // multiple packets could be send on a synchronous HCI transport 1065 while (true){ 1066 1067 // get current data 1068 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1069 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1070 bool more_fragments = false; 1071 1072 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1073 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1074 more_fragments = true; 1075 current_iso_data_packet_length = max_iso_data_packet_length; 1076 } 1077 1078 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1079 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1080 uint8_t pb_flags; 1081 if (iso_header_pos == 0u){ 1082 // first fragment, keep TS field 1083 pb_flags = more_fragments ? 0x00 : 0x02; 1084 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1085 } else { 1086 // later fragment, drop TS field 1087 pb_flags = more_fragments ? 0x01 : 0x03; 1088 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1089 } 1090 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1091 1092 // update header len 1093 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1094 1095 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1096 if (more_fragments){ 1097 // update start of next fragment to send 1098 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1099 } else { 1100 // done 1101 hci_stack->iso_fragmentation_pos = 0; 1102 hci_stack->iso_fragmentation_total_size = 0; 1103 } 1104 1105 // send packet 1106 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1107 const int size = current_iso_data_packet_length + 4; 1108 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1109 hci_stack->iso_fragmentation_tx_active = true; 1110 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1111 if (err != 0){ 1112 // no error from HCI Transport expected 1113 status = ERROR_CODE_HARDWARE_FAILURE; 1114 } 1115 1116 // done yet? 1117 if (!more_fragments) break; 1118 1119 // can send more? 1120 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1121 } 1122 1123 // release buffer now for synchronous transport 1124 if (hci_transport_synchronous()){ 1125 hci_stack->iso_fragmentation_tx_active = false; 1126 hci_release_packet_buffer(); 1127 hci_emit_transport_packet_sent(); 1128 } 1129 1130 return status; 1131 } 1132 1133 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1134 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1135 1136 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1137 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1138 if (iso_stream == NULL){ 1139 hci_release_packet_buffer(); 1140 hci_iso_notify_can_send_now(); 1141 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1142 } 1143 1144 // TODO: check for space on controller 1145 1146 // skip iso packets if needed 1147 if (iso_stream->num_packets_to_skip > 0){ 1148 iso_stream->num_packets_to_skip--; 1149 // pretend it was processed and trigger next one 1150 hci_release_packet_buffer(); 1151 hci_iso_notify_can_send_now(); 1152 return ERROR_CODE_SUCCESS; 1153 } 1154 1155 // track outgoing packet sent 1156 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1157 iso_stream->num_packets_sent++; 1158 1159 // setup data 1160 hci_stack->iso_fragmentation_total_size = size; 1161 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1162 1163 return hci_send_iso_packet_fragments(); 1164 } 1165 #endif 1166 1167 static void acl_handler(uint8_t *packet, uint16_t size){ 1168 1169 // get info 1170 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1171 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1172 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1173 uint16_t acl_length = READ_ACL_LENGTH(packet); 1174 1175 // ignore non-registered handle 1176 if (!conn){ 1177 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1178 return; 1179 } 1180 1181 // assert packet is complete 1182 if ((acl_length + 4u) != size){ 1183 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1184 return; 1185 } 1186 1187 #ifdef ENABLE_CLASSIC 1188 // update idle timestamp 1189 hci_connection_timestamp(conn); 1190 #endif 1191 1192 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1193 hci_stack->host_completed_packets = 1; 1194 conn->num_packets_completed++; 1195 #endif 1196 1197 // handle different packet types 1198 switch (acl_flags & 0x03u) { 1199 1200 case 0x01: // continuation fragment 1201 1202 // sanity checks 1203 if (conn->acl_recombination_pos == 0u) { 1204 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1205 return; 1206 } 1207 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1208 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1209 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1210 conn->acl_recombination_pos = 0; 1211 return; 1212 } 1213 1214 // append fragment payload (header already stored) 1215 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1216 &packet[4], acl_length); 1217 conn->acl_recombination_pos += acl_length; 1218 1219 // forward complete L2CAP packet if complete. 1220 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1221 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1222 // reset recombination buffer 1223 conn->acl_recombination_length = 0; 1224 conn->acl_recombination_pos = 0; 1225 } 1226 break; 1227 1228 case 0x02: { // first fragment 1229 1230 // sanity check 1231 if (conn->acl_recombination_pos) { 1232 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1233 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1234 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1235 } 1236 conn->acl_recombination_pos = 0; 1237 } 1238 1239 // peek into L2CAP packet! 1240 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1241 1242 // compare fragment size to L2CAP packet size 1243 if (acl_length >= (l2cap_length + 4u)){ 1244 // forward fragment as L2CAP packet 1245 hci_emit_acl_packet(packet, acl_length + 4u); 1246 } else { 1247 1248 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1249 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1250 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1251 return; 1252 } 1253 1254 // store first fragment and tweak acl length for complete package 1255 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1256 packet, acl_length + 4u); 1257 conn->acl_recombination_pos = acl_length + 4u; 1258 conn->acl_recombination_length = l2cap_length; 1259 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1260 } 1261 break; 1262 1263 } 1264 default: 1265 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1266 return; 1267 } 1268 1269 // execute main loop 1270 hci_run(); 1271 } 1272 1273 static void hci_connection_stop_timer(hci_connection_t * conn){ 1274 btstack_run_loop_remove_timer(&conn->timeout); 1275 #ifdef ENABLE_CLASSIC 1276 btstack_run_loop_remove_timer(&conn->timeout_sco); 1277 #endif 1278 } 1279 1280 static void hci_shutdown_connection(hci_connection_t *conn){ 1281 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1282 1283 #ifdef ENABLE_CLASSIC 1284 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1285 bd_addr_type_t addr_type = conn->address_type; 1286 #endif 1287 #ifdef HAVE_SCO_TRANSPORT 1288 hci_con_handle_t con_handle = conn->con_handle; 1289 #endif 1290 #endif 1291 1292 hci_connection_stop_timer(conn); 1293 1294 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1295 btstack_memory_hci_connection_free( conn ); 1296 1297 // now it's gone 1298 hci_emit_nr_connections_changed(); 1299 1300 #ifdef ENABLE_CLASSIC 1301 #ifdef ENABLE_SCO_OVER_HCI 1302 // update SCO 1303 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1304 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1305 } 1306 #endif 1307 #ifdef HAVE_SCO_TRANSPORT 1308 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1309 hci_stack->sco_transport->close(con_handle); 1310 } 1311 #endif 1312 #endif 1313 } 1314 1315 #ifdef ENABLE_CLASSIC 1316 1317 static const uint16_t packet_type_sizes[] = { 1318 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1319 HCI_ACL_DH1_SIZE, 0, 0, 0, 1320 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1321 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1322 }; 1323 static const uint8_t packet_type_feature_requirement_bit[] = { 1324 0, // 3 slot packets 1325 1, // 5 slot packets 1326 25, // EDR 2 mpbs 1327 26, // EDR 3 mbps 1328 39, // 3 slot EDR packts 1329 40, // 5 slot EDR packet 1330 }; 1331 static const uint16_t packet_type_feature_packet_mask[] = { 1332 0x0f00, // 3 slot packets 1333 0xf000, // 5 slot packets 1334 0x1102, // EDR 2 mpbs 1335 0x2204, // EDR 3 mbps 1336 0x0300, // 3 slot EDR packts 1337 0x3000, // 5 slot EDR packet 1338 }; 1339 1340 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1341 // enable packet types based on size 1342 uint16_t packet_types = 0; 1343 unsigned int i; 1344 for (i=0;i<16;i++){ 1345 if (packet_type_sizes[i] == 0) continue; 1346 if (packet_type_sizes[i] <= buffer_size){ 1347 packet_types |= 1 << i; 1348 } 1349 } 1350 // disable packet types due to missing local supported features 1351 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1352 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1353 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1354 if (feature_set) continue; 1355 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1356 packet_types &= ~packet_type_feature_packet_mask[i]; 1357 } 1358 // flip bits for "may not be used" 1359 packet_types ^= 0x3306; 1360 return packet_types; 1361 } 1362 1363 uint16_t hci_usable_acl_packet_types(void){ 1364 return hci_stack->packet_types; 1365 } 1366 #endif 1367 1368 uint8_t* hci_get_outgoing_packet_buffer(void){ 1369 // hci packet buffer is >= acl data packet length 1370 return hci_stack->hci_packet_buffer; 1371 } 1372 1373 uint16_t hci_max_acl_data_packet_length(void){ 1374 return hci_stack->acl_data_packet_length; 1375 } 1376 1377 #ifdef ENABLE_CLASSIC 1378 bool hci_extended_sco_link_supported(void){ 1379 // No. 31, byte 3, bit 7 1380 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1381 } 1382 #endif 1383 1384 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1385 // No. 54, byte 6, bit 6 1386 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1387 } 1388 1389 #ifdef ENABLE_CLASSIC 1390 static int gap_ssp_supported(void){ 1391 // No. 51, byte 6, bit 3 1392 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1393 } 1394 #endif 1395 1396 static int hci_classic_supported(void){ 1397 #ifdef ENABLE_CLASSIC 1398 // No. 37, byte 4, bit 5, = No BR/EDR Support 1399 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1400 #else 1401 return 0; 1402 #endif 1403 } 1404 1405 static int hci_le_supported(void){ 1406 #ifdef ENABLE_BLE 1407 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1408 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1409 #else 1410 return 0; 1411 #endif 1412 } 1413 1414 static bool hci_command_supported(uint8_t command_index){ 1415 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1416 } 1417 1418 #ifdef ENABLE_BLE 1419 1420 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1421 static bool hci_extended_advertising_supported(void){ 1422 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1423 } 1424 #endif 1425 1426 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1427 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1428 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1429 } else { 1430 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1431 } 1432 } 1433 1434 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1435 *addr_type = hci_stack->le_own_addr_type; 1436 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1437 } 1438 1439 #ifdef ENABLE_LE_PERIPHERAL 1440 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1441 *addr_type = hci_stack->le_advertisements_own_addr_type; 1442 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1443 }; 1444 #endif 1445 1446 #ifdef ENABLE_LE_CENTRAL 1447 1448 /** 1449 * @brief Get own addr type and address used for LE connections (Central) 1450 */ 1451 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1452 *addr_type = hci_stack->le_connection_own_addr_type; 1453 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1454 } 1455 1456 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1457 1458 uint16_t offset = 3; 1459 uint8_t num_reports = packet[offset]; 1460 offset += 1; 1461 1462 uint16_t i; 1463 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1464 for (i=0; (i<num_reports) && (offset < size);i++){ 1465 // sanity checks on data_length: 1466 uint8_t data_length = packet[offset + 8]; 1467 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1468 if ((offset + 9u + data_length + 1u) > size) return; 1469 // setup event 1470 uint8_t event_size = 10u + data_length; 1471 uint16_t pos = 0; 1472 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1473 event[pos++] = event_size; 1474 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1475 offset += 8; 1476 pos += 8; 1477 event[pos++] = packet[offset + 1 + data_length]; // rssi 1478 event[pos++] = data_length; 1479 offset++; 1480 (void)memcpy(&event[pos], &packet[offset], data_length); 1481 pos += data_length; 1482 offset += data_length + 1u; // rssi 1483 hci_emit_event(event, pos, 1); 1484 } 1485 } 1486 1487 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1488 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1489 uint16_t offset = 3; 1490 uint8_t num_reports = packet[offset++]; 1491 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1492 uint8_t i; 1493 for (i=0; (i<num_reports) && (offset < size);i++){ 1494 // sanity checks on data_length: 1495 uint16_t data_length = packet[offset + 23]; 1496 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1497 if ((offset + 24u + data_length) > size) return; 1498 uint16_t event_type = little_endian_read_16(packet, offset); 1499 offset += 2; 1500 if ((event_type & 0x10) != 0) { 1501 // setup legacy event 1502 uint8_t legacy_event_type; 1503 switch (event_type){ 1504 case 0b0010011: 1505 // ADV_IND 1506 legacy_event_type = 0; 1507 break; 1508 case 0b0010101: 1509 // ADV_DIRECT_IND 1510 legacy_event_type = 1; 1511 break; 1512 case 0b0010010: 1513 // ADV_SCAN_IND 1514 legacy_event_type = 2; 1515 break; 1516 case 0b0010000: 1517 // ADV_NONCONN_IND 1518 legacy_event_type = 3; 1519 break; 1520 case 0b0011011: 1521 case 0b0011010: 1522 // SCAN_RSP 1523 legacy_event_type = 4; 1524 break; 1525 default: 1526 legacy_event_type = 0; 1527 break; 1528 } 1529 uint16_t pos = 0; 1530 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1531 event[pos++] = 10u + data_length; 1532 event[pos++] = legacy_event_type; 1533 // copy address type + address 1534 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1535 offset += 7; 1536 pos += 7; 1537 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1538 offset += 4; 1539 // copy rssi 1540 event[pos++] = packet[offset++]; 1541 // skip periodic advertising interval and direct address 1542 offset += 9; 1543 // copy data len + data; 1544 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1545 pos += 1 +data_length; 1546 offset += 1+ data_length; 1547 hci_emit_event(event, pos, 1); 1548 } else { 1549 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1550 uint8_t report_len = 24 + data_length; 1551 event[1] = report_len; 1552 little_endian_store_16(event, 2, event_type); 1553 memcpy(&event[4], &packet[offset], report_len); 1554 offset += report_len; 1555 hci_emit_event(event, 2 + report_len, 1); 1556 } 1557 } 1558 } 1559 #endif 1560 1561 #endif 1562 #endif 1563 1564 #ifdef ENABLE_BLE 1565 #ifdef ENABLE_LE_PERIPHERAL 1566 static void hci_update_advertisements_enabled_for_current_roles(void){ 1567 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1568 // get number of active le slave connections 1569 int num_slave_connections = 0; 1570 btstack_linked_list_iterator_t it; 1571 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1572 while (btstack_linked_list_iterator_has_next(&it)){ 1573 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1574 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1575 if (con->state != OPEN) continue; 1576 if (con->role != HCI_ROLE_SLAVE) continue; 1577 if (!hci_is_le_connection(con)) continue; 1578 num_slave_connections++; 1579 } 1580 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1581 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1582 } else { 1583 hci_stack->le_advertisements_enabled_for_current_roles = false; 1584 } 1585 } 1586 #endif 1587 #endif 1588 1589 #ifdef ENABLE_CLASSIC 1590 static void gap_run_set_local_name(void){ 1591 hci_reserve_packet_buffer(); 1592 uint8_t * packet = hci_stack->hci_packet_buffer; 1593 // construct HCI Command and send 1594 uint16_t opcode = hci_write_local_name.opcode; 1595 hci_stack->last_cmd_opcode = opcode; 1596 packet[0] = opcode & 0xff; 1597 packet[1] = opcode >> 8; 1598 packet[2] = DEVICE_NAME_LEN; 1599 memset(&packet[3], 0, DEVICE_NAME_LEN); 1600 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1601 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1602 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1603 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1604 // expand '00:00:00:00:00:00' in name with bd_addr 1605 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1606 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1607 } 1608 1609 static void gap_run_set_eir_data(void){ 1610 hci_reserve_packet_buffer(); 1611 uint8_t * packet = hci_stack->hci_packet_buffer; 1612 // construct HCI Command in-place and send 1613 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1614 hci_stack->last_cmd_opcode = opcode; 1615 uint16_t offset = 0; 1616 packet[offset++] = opcode & 0xff; 1617 packet[offset++] = opcode >> 8; 1618 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1619 packet[offset++] = 0; // FEC not required 1620 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1621 if (hci_stack->eir_data){ 1622 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1623 ad_context_t context; 1624 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1625 uint8_t data_type = ad_iterator_get_data_type(&context); 1626 uint8_t size = ad_iterator_get_data_len(&context); 1627 const uint8_t *data = ad_iterator_get_data(&context); 1628 // copy item 1629 packet[offset++] = size + 1; 1630 packet[offset++] = data_type; 1631 memcpy(&packet[offset], data, size); 1632 // update name item 1633 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1634 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1635 } 1636 offset += size; 1637 } 1638 } else { 1639 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1640 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1641 packet[offset++] = bytes_to_copy + 1; 1642 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1643 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1644 // expand '00:00:00:00:00:00' in name with bd_addr 1645 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1646 } 1647 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1648 } 1649 1650 static void hci_run_gap_tasks_classic(void){ 1651 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1652 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1653 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1654 return; 1655 } 1656 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1657 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1658 gap_run_set_local_name(); 1659 return; 1660 } 1661 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1662 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1663 gap_run_set_eir_data(); 1664 return; 1665 } 1666 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1667 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1668 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1669 return; 1670 } 1671 // write page scan activity 1672 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1673 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1674 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1675 return; 1676 } 1677 // write page scan type 1678 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1679 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1680 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1681 return; 1682 } 1683 // write page timeout 1684 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1685 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1686 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1687 return; 1688 } 1689 // send scan enable 1690 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1691 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1692 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1693 return; 1694 } 1695 // send write scan activity 1696 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1697 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1698 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1699 return; 1700 } 1701 } 1702 #endif 1703 1704 #ifndef HAVE_HOST_CONTROLLER_API 1705 1706 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1707 if (!hci_stack->config) return 0; 1708 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1709 // Limit baud rate for Broadcom chipsets to 3 mbps 1710 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1711 baud_rate = 3000000; 1712 } 1713 return baud_rate; 1714 } 1715 1716 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1717 UNUSED(ds); 1718 1719 switch (hci_stack->substate){ 1720 case HCI_INIT_W4_SEND_RESET: 1721 log_info("Resend HCI Reset"); 1722 hci_stack->substate = HCI_INIT_SEND_RESET; 1723 hci_stack->num_cmd_packets = 1; 1724 hci_run(); 1725 break; 1726 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1727 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1728 if (hci_stack->hci_transport->reset_link){ 1729 hci_stack->hci_transport->reset_link(); 1730 } 1731 1732 /* fall through */ 1733 1734 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1735 log_info("Resend HCI Reset - CSR Warm Boot"); 1736 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1737 hci_stack->num_cmd_packets = 1; 1738 hci_run(); 1739 break; 1740 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1741 if (hci_stack->hci_transport->set_baudrate){ 1742 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1743 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1744 hci_stack->hci_transport->set_baudrate(baud_rate); 1745 } 1746 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1747 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1748 if (hci_stack->hci_transport->reset_link){ 1749 log_info("Link Reset"); 1750 hci_stack->hci_transport->reset_link(); 1751 } 1752 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1753 hci_run(); 1754 } 1755 break; 1756 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1757 // otherwise continue 1758 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1759 hci_send_cmd(&hci_read_local_supported_commands); 1760 break; 1761 default: 1762 break; 1763 } 1764 } 1765 #endif 1766 1767 static void hci_initializing_next_state(void){ 1768 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1769 } 1770 1771 static void hci_init_done(void){ 1772 // done. tell the app 1773 log_info("hci_init_done -> HCI_STATE_WORKING"); 1774 hci_stack->state = HCI_STATE_WORKING; 1775 hci_emit_state(); 1776 } 1777 1778 // assumption: hci_can_send_command_packet_now() == true 1779 static void hci_initializing_run(void){ 1780 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1781 1782 if (!hci_can_send_command_packet_now()) return; 1783 1784 #ifndef HAVE_HOST_CONTROLLER_API 1785 bool need_baud_change = hci_stack->config 1786 && hci_stack->chipset 1787 && hci_stack->chipset->set_baudrate_command 1788 && hci_stack->hci_transport->set_baudrate 1789 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1790 #endif 1791 1792 switch (hci_stack->substate){ 1793 case HCI_INIT_SEND_RESET: 1794 hci_state_reset(); 1795 1796 #ifndef HAVE_HOST_CONTROLLER_API 1797 // prepare reset if command complete not received in 100ms 1798 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1799 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1800 btstack_run_loop_add_timer(&hci_stack->timeout); 1801 #endif 1802 // send command 1803 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1804 hci_send_cmd(&hci_reset); 1805 break; 1806 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1807 hci_send_cmd(&hci_read_local_version_information); 1808 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1809 break; 1810 1811 #ifndef HAVE_HOST_CONTROLLER_API 1812 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1813 hci_state_reset(); 1814 // prepare reset if command complete not received in 100ms 1815 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1816 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1817 btstack_run_loop_add_timer(&hci_stack->timeout); 1818 // send command 1819 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1820 hci_send_cmd(&hci_reset); 1821 break; 1822 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1823 hci_state_reset(); 1824 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1825 hci_send_cmd(&hci_reset); 1826 break; 1827 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1828 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1829 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1830 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1831 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1832 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1833 break; 1834 } 1835 case HCI_INIT_SET_BD_ADDR: 1836 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1837 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1838 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1839 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1840 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1841 break; 1842 case HCI_INIT_SEND_READ_LOCAL_NAME: 1843 #ifdef ENABLE_CLASSIC 1844 hci_send_cmd(&hci_read_local_name); 1845 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1846 break; 1847 #endif 1848 /* fall through */ 1849 1850 case HCI_INIT_SEND_BAUD_CHANGE: 1851 if (need_baud_change) { 1852 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1853 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1854 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1855 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1856 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1857 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1858 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1859 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1860 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1861 btstack_run_loop_add_timer(&hci_stack->timeout); 1862 } 1863 break; 1864 } 1865 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1866 1867 /* fall through */ 1868 1869 case HCI_INIT_CUSTOM_INIT: 1870 case HCI_INIT_CUSTOM_PRE_INIT: 1871 // Custom initialization 1872 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1873 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1874 bool send_cmd = false; 1875 switch (hci_stack->chipset_result){ 1876 case BTSTACK_CHIPSET_VALID_COMMAND: 1877 send_cmd = true; 1878 switch (hci_stack->substate){ 1879 case HCI_INIT_CUSTOM_INIT: 1880 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1881 break; 1882 case HCI_INIT_CUSTOM_PRE_INIT: 1883 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1884 break; 1885 default: 1886 btstack_assert(false); 1887 break; 1888 } 1889 break; 1890 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1891 send_cmd = true; 1892 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1893 log_info("CSR Warm Boot"); 1894 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1895 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1896 btstack_run_loop_add_timer(&hci_stack->timeout); 1897 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1898 && hci_stack->config 1899 && hci_stack->chipset 1900 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1901 && hci_stack->hci_transport->set_baudrate 1902 && hci_transport_uart_get_main_baud_rate()){ 1903 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1904 } else { 1905 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1906 } 1907 break; 1908 default: 1909 break; 1910 } 1911 1912 if (send_cmd){ 1913 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1914 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1915 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1916 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1917 break; 1918 } 1919 log_info("Init script done"); 1920 1921 // Custom Pre-Init complete, start regular init with HCI Reset 1922 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 1923 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1924 hci_send_cmd(&hci_reset); 1925 break; 1926 } 1927 1928 // Init script download on Broadcom chipsets causes: 1929 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1930 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1931 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1932 1933 // - baud rate to reset, restore UART baud rate if needed 1934 if (need_baud_change) { 1935 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1936 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1937 hci_stack->hci_transport->set_baudrate(baud_rate); 1938 } 1939 1940 uint16_t bcm_delay_ms = 300; 1941 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1942 // -> Work around: wait here. 1943 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1944 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1945 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1946 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1947 btstack_run_loop_add_timer(&hci_stack->timeout); 1948 break; 1949 } 1950 } 1951 #endif 1952 /* fall through */ 1953 1954 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1955 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1956 hci_send_cmd(&hci_read_local_supported_commands); 1957 break; 1958 case HCI_INIT_READ_BD_ADDR: 1959 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1960 hci_send_cmd(&hci_read_bd_addr); 1961 break; 1962 case HCI_INIT_READ_BUFFER_SIZE: 1963 // only read buffer size if supported 1964 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1965 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1966 hci_send_cmd(&hci_read_buffer_size); 1967 break; 1968 } 1969 1970 /* fall through */ 1971 1972 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1973 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1974 hci_send_cmd(&hci_read_local_supported_features); 1975 break; 1976 1977 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1978 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1979 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1980 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1981 break; 1982 case HCI_INIT_HOST_BUFFER_SIZE: 1983 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1984 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1985 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1986 break; 1987 #endif 1988 1989 case HCI_INIT_SET_EVENT_MASK: 1990 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1991 if (hci_le_supported()){ 1992 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1993 } else { 1994 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1995 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1996 } 1997 break; 1998 1999 case HCI_INIT_SET_EVENT_MASK_2: 2000 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2001 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2002 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2003 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2004 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2005 // Encryption Change Event v2 - bit 25 2006 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2007 break; 2008 } 2009 2010 #ifdef ENABLE_CLASSIC 2011 /* fall through */ 2012 2013 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2014 if (hci_classic_supported() && gap_ssp_supported()){ 2015 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2016 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2017 break; 2018 } 2019 2020 /* fall through */ 2021 2022 case HCI_INIT_WRITE_INQUIRY_MODE: 2023 if (hci_classic_supported()){ 2024 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2025 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2026 break; 2027 } 2028 2029 /* fall through */ 2030 2031 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2032 // skip write secure connections host support if not supported or disabled 2033 if (hci_classic_supported() && hci_stack->secure_connections_enable 2034 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2035 hci_stack->secure_connections_active = true; 2036 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2037 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2038 break; 2039 } 2040 2041 /* fall through */ 2042 2043 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2044 // skip set min encryption key size 2045 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2046 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2047 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2048 break; 2049 } 2050 2051 #ifdef ENABLE_SCO_OVER_HCI 2052 /* fall through */ 2053 2054 // only sent if ENABLE_SCO_OVER_HCI is defined 2055 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2056 // skip write synchronous flow control if not supported 2057 if (hci_classic_supported() 2058 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2059 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2060 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2061 break; 2062 } 2063 /* fall through */ 2064 2065 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2066 // skip write default erroneous data reporting if not supported 2067 if (hci_classic_supported() 2068 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2069 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2070 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2071 break; 2072 } 2073 #endif 2074 2075 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2076 /* fall through */ 2077 2078 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2079 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2080 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2081 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2082 #ifdef ENABLE_SCO_OVER_HCI 2083 log_info("BCM: Route SCO data via HCI transport"); 2084 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2085 #endif 2086 #ifdef ENABLE_SCO_OVER_PCM 2087 log_info("BCM: Route SCO data via PCM interface"); 2088 #ifdef ENABLE_BCM_PCM_WBS 2089 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2090 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2091 #else 2092 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2093 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2094 #endif 2095 #endif 2096 break; 2097 } 2098 #endif 2099 2100 #ifdef ENABLE_SCO_OVER_PCM 2101 /* fall through */ 2102 2103 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2104 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2105 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2106 log_info("BCM: Config PCM interface for I2S"); 2107 #ifdef ENABLE_BCM_PCM_WBS 2108 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2109 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2110 #else 2111 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2112 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2113 #endif 2114 break; 2115 } 2116 #endif 2117 #endif 2118 2119 #ifdef ENABLE_BLE 2120 /* fall through */ 2121 2122 // LE INIT 2123 case HCI_INIT_LE_READ_BUFFER_SIZE: 2124 if (hci_le_supported()){ 2125 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2126 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2127 hci_send_cmd(&hci_le_read_buffer_size_v2); 2128 } else { 2129 hci_send_cmd(&hci_le_read_buffer_size); 2130 } 2131 break; 2132 } 2133 2134 /* fall through */ 2135 2136 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2137 // skip write le host if not supported (e.g. on LE only EM9301) 2138 if (hci_le_supported() 2139 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2140 // LE Supported Host = 1, Simultaneous Host = 0 2141 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2142 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2143 break; 2144 } 2145 2146 /* fall through */ 2147 2148 case HCI_INIT_LE_SET_EVENT_MASK: 2149 if (hci_le_supported()){ 2150 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2151 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2152 break; 2153 } 2154 #endif 2155 2156 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2157 /* fall through */ 2158 2159 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2160 if (hci_le_supported() 2161 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2162 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2163 hci_send_cmd(&hci_le_read_maximum_data_length); 2164 break; 2165 } 2166 2167 /* fall through */ 2168 2169 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2170 if (hci_le_supported() 2171 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2172 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2173 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2174 break; 2175 } 2176 #endif 2177 2178 #ifdef ENABLE_LE_CENTRAL 2179 /* fall through */ 2180 2181 case HCI_INIT_READ_WHITE_LIST_SIZE: 2182 if (hci_le_supported()){ 2183 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2184 hci_send_cmd(&hci_le_read_white_list_size); 2185 break; 2186 } 2187 2188 #endif 2189 2190 #ifdef ENABLE_LE_PERIPHERAL 2191 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2192 /* fall through */ 2193 2194 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2195 if (hci_extended_advertising_supported()){ 2196 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2197 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2198 break; 2199 } 2200 #endif 2201 #endif 2202 /* fall through */ 2203 2204 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2205 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2206 if (hci_le_supported()) { 2207 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2208 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2209 break; 2210 } 2211 #endif 2212 2213 /* fall through */ 2214 2215 case HCI_INIT_DONE: 2216 hci_stack->substate = HCI_INIT_DONE; 2217 // main init sequence complete 2218 #ifdef ENABLE_CLASSIC 2219 // check if initial Classic GAP Tasks are completed 2220 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2221 hci_run_gap_tasks_classic(); 2222 break; 2223 } 2224 #endif 2225 #ifdef ENABLE_BLE 2226 #ifdef ENABLE_LE_CENTRAL 2227 // check if initial LE GAP Tasks are completed 2228 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2229 hci_run_general_gap_le(); 2230 break; 2231 } 2232 #endif 2233 #endif 2234 hci_init_done(); 2235 break; 2236 2237 default: 2238 return; 2239 } 2240 } 2241 2242 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2243 bool command_completed = false; 2244 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2245 uint16_t opcode = little_endian_read_16(packet,3); 2246 if (opcode == hci_stack->last_cmd_opcode){ 2247 command_completed = true; 2248 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2249 } else { 2250 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2251 } 2252 } 2253 2254 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2255 uint8_t status = packet[2]; 2256 uint16_t opcode = little_endian_read_16(packet,4); 2257 if (opcode == hci_stack->last_cmd_opcode){ 2258 if (status){ 2259 command_completed = true; 2260 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2261 } else { 2262 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2263 } 2264 } else { 2265 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2266 } 2267 } 2268 #ifndef HAVE_HOST_CONTROLLER_API 2269 // Vendor == CSR 2270 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2271 // TODO: track actual command 2272 command_completed = true; 2273 } 2274 2275 // Vendor == Toshiba 2276 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2277 // TODO: track actual command 2278 command_completed = true; 2279 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2280 hci_stack->num_cmd_packets = 1; 2281 } 2282 #endif 2283 2284 return command_completed; 2285 } 2286 2287 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2288 2289 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2290 2291 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2292 2293 #ifndef HAVE_HOST_CONTROLLER_API 2294 2295 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2296 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2297 // 2298 // HCI Reset 2299 // Timeout 100 ms 2300 // HCI Reset 2301 // Command Complete Reset 2302 // HCI Read Local Version Information 2303 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2304 // hang... 2305 // 2306 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2307 if (!command_completed 2308 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2309 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2310 2311 uint16_t opcode = little_endian_read_16(packet,3); 2312 if (opcode == hci_reset.opcode){ 2313 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2314 return; 2315 } 2316 } 2317 2318 // CSR & H5 2319 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2320 if (!command_completed 2321 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2322 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2323 2324 uint16_t opcode = little_endian_read_16(packet,3); 2325 if (opcode == hci_reset.opcode){ 2326 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2327 return; 2328 } 2329 } 2330 2331 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2332 // fix: Correct substate and behave as command below 2333 if (command_completed){ 2334 switch (hci_stack->substate){ 2335 case HCI_INIT_SEND_RESET: 2336 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2337 break; 2338 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2339 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2340 break; 2341 default: 2342 break; 2343 } 2344 } 2345 2346 #endif 2347 2348 if (!command_completed) return; 2349 2350 bool need_baud_change = false; 2351 bool need_addr_change = false; 2352 2353 #ifndef HAVE_HOST_CONTROLLER_API 2354 need_baud_change = hci_stack->config 2355 && hci_stack->chipset 2356 && hci_stack->chipset->set_baudrate_command 2357 && hci_stack->hci_transport->set_baudrate 2358 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2359 2360 need_addr_change = hci_stack->custom_bd_addr_set 2361 && hci_stack->chipset 2362 && hci_stack->chipset->set_bd_addr_command; 2363 #endif 2364 2365 switch(hci_stack->substate){ 2366 2367 #ifndef HAVE_HOST_CONTROLLER_API 2368 case HCI_INIT_SEND_RESET: 2369 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2370 // fix: just correct substate and behave as command below 2371 2372 /* fall through */ 2373 #endif 2374 2375 case HCI_INIT_W4_SEND_RESET: 2376 btstack_run_loop_remove_timer(&hci_stack->timeout); 2377 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2378 return; 2379 2380 #ifndef HAVE_HOST_CONTROLLER_API 2381 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2382 // for STLC2500D, baud rate change already happened. 2383 // for others, baud rate gets changed now 2384 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2385 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2386 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2387 hci_stack->hci_transport->set_baudrate(baud_rate); 2388 } 2389 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2390 return; 2391 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2392 btstack_run_loop_remove_timer(&hci_stack->timeout); 2393 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2394 return; 2395 case HCI_INIT_W4_CUSTOM_INIT: 2396 // repeat custom init 2397 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2398 return; 2399 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2400 // repeat custom init 2401 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2402 return; 2403 #endif 2404 2405 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2406 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2407 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2408 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2409 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2410 return; 2411 } 2412 if (need_addr_change){ 2413 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2414 return; 2415 } 2416 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2417 return; 2418 #ifndef HAVE_HOST_CONTROLLER_API 2419 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2420 if (need_baud_change){ 2421 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2422 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2423 hci_stack->hci_transport->set_baudrate(baud_rate); 2424 } 2425 if (need_addr_change){ 2426 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2427 return; 2428 } 2429 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2430 return; 2431 case HCI_INIT_W4_SET_BD_ADDR: 2432 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2433 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2434 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2435 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2436 return; 2437 } 2438 // skipping st warm boot 2439 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2440 return; 2441 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2442 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2443 return; 2444 #endif 2445 2446 case HCI_INIT_DONE: 2447 // set state if we came here by fall through 2448 hci_stack->substate = HCI_INIT_DONE; 2449 return; 2450 2451 default: 2452 break; 2453 } 2454 hci_initializing_next_state(); 2455 } 2456 2457 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2458 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2459 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2460 // check if we have been aware of the HCI connection 2461 switch (conn->state){ 2462 case SENT_CREATE_CONNECTION: 2463 case RECEIVED_CONNECTION_REQUEST: 2464 case ACCEPTED_CONNECTION_REQUEST: 2465 break; 2466 default: 2467 return; 2468 } 2469 2470 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2471 bd_addr_t bd_address; 2472 (void)memcpy(&bd_address, conn->address, 6); 2473 2474 #ifdef ENABLE_CLASSIC 2475 // cache needed data 2476 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2477 #endif 2478 2479 // connection failed, remove entry 2480 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2481 btstack_memory_hci_connection_free( conn ); 2482 2483 #ifdef ENABLE_CLASSIC 2484 // notify client if dedicated bonding 2485 if (notify_dedicated_bonding_failed){ 2486 log_info("hci notify_dedicated_bonding_failed"); 2487 hci_emit_dedicated_bonding_result(bd_address, status); 2488 } 2489 2490 // if authentication error, also delete link key 2491 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2492 gap_drop_link_key_for_bd_addr(bd_address); 2493 } 2494 #else 2495 UNUSED(status); 2496 #endif 2497 } 2498 2499 #ifdef ENABLE_CLASSIC 2500 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2501 // SSP Controller 2502 if (features[6] & (1 << 3)){ 2503 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2504 } 2505 // eSCO 2506 if (features[3] & (1<<7)){ 2507 conn->remote_supported_features[0] |= 1; 2508 } 2509 // Extended features 2510 if (features[7] & (1<<7)){ 2511 conn->remote_supported_features[0] |= 2; 2512 } 2513 } 2514 2515 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2516 // SSP Host 2517 if (features[0] & (1 << 0)){ 2518 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2519 } 2520 // SC Host 2521 if (features[0] & (1 << 3)){ 2522 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2523 } 2524 } 2525 2526 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2527 // SC Controller 2528 if (features[1] & (1 << 0)){ 2529 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2530 } 2531 } 2532 2533 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2534 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2535 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2536 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2537 if (conn->bonding_flags & BONDING_DEDICATED){ 2538 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2539 } 2540 } 2541 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2542 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2543 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2544 } 2545 2546 #endif 2547 2548 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2549 // handle BT initialization 2550 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2551 hci_initializing_event_handler(packet, size); 2552 } 2553 2554 // help with BT sleep 2555 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2556 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2557 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2558 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2559 hci_initializing_next_state(); 2560 } 2561 } 2562 2563 #ifdef ENABLE_CLASSIC 2564 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2565 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2566 conn->encryption_key_size = encryption_key_size; 2567 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2568 2569 // trigger disconnect for dedicated bonding, skip emit security level as disconnect is pending 2570 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2571 conn->bonding_flags &= ~BONDING_DEDICATED; 2572 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2573 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2574 return; 2575 } 2576 2577 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2578 conn->requested_security_level = LEVEL_0; 2579 hci_emit_security_level(conn->con_handle, security_level); 2580 return; 2581 } 2582 2583 // Request remote features if not already done 2584 hci_trigger_remote_features_for_connection(conn); 2585 2586 // Request Authentication if not already done 2587 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2588 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2589 } 2590 #endif 2591 2592 static void hci_store_local_supported_commands(const uint8_t * packet){ 2593 // create mapping table 2594 #define X(name, offset, bit) { offset, bit }, 2595 static struct { 2596 uint8_t byte_offset; 2597 uint8_t bit_position; 2598 } supported_hci_commands_map [] = { 2599 SUPPORTED_HCI_COMMANDS 2600 }; 2601 #undef X 2602 2603 // create names for debug purposes 2604 #ifdef ENABLE_LOG_DEBUG 2605 #define X(name, offset, bit) #name, 2606 static const char * command_names[] = { 2607 SUPPORTED_HCI_COMMANDS 2608 }; 2609 #undef X 2610 #endif 2611 2612 hci_stack->local_supported_commands = 0; 2613 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2614 uint16_t i; 2615 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2616 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2617 #ifdef ENABLE_LOG_DEBUG 2618 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); 2619 #else 2620 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2621 #endif 2622 hci_stack->local_supported_commands |= (1LU << i); 2623 } 2624 } 2625 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2626 } 2627 2628 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2629 UNUSED(size); 2630 2631 uint16_t manufacturer; 2632 #ifdef ENABLE_CLASSIC 2633 hci_con_handle_t handle; 2634 hci_connection_t * conn; 2635 #endif 2636 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2637 uint8_t status; 2638 #endif 2639 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2640 le_audio_cig_t * cig; 2641 #endif 2642 2643 // get num cmd packets - limit to 1 to reduce complexity 2644 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2645 2646 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2647 switch (opcode){ 2648 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2649 if (packet[5]) break; 2650 // terminate, name 248 chars 2651 packet[6+248] = 0; 2652 log_info("local name: %s", &packet[6]); 2653 break; 2654 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2655 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2656 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2657 uint16_t acl_len = little_endian_read_16(packet, 6); 2658 uint16_t sco_len = packet[8]; 2659 2660 // determine usable ACL/SCO payload size 2661 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2662 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2663 2664 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2665 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2666 2667 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2668 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2669 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2670 } 2671 break; 2672 case HCI_OPCODE_HCI_READ_RSSI: 2673 if (packet[5] == ERROR_CODE_SUCCESS){ 2674 uint8_t event[5]; 2675 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2676 event[1] = 3; 2677 (void)memcpy(&event[2], &packet[6], 3); 2678 hci_emit_event(event, sizeof(event), 1); 2679 } 2680 break; 2681 #ifdef ENABLE_BLE 2682 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2683 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2684 hci_stack->le_iso_packets_total_num = packet[11]; 2685 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2686 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2687 2688 /* fall through */ 2689 2690 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2691 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2692 hci_stack->le_acl_packets_total_num = packet[8]; 2693 // determine usable ACL payload size 2694 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2695 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2696 } 2697 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); 2698 break; 2699 #endif 2700 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2701 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2702 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2703 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2704 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); 2705 break; 2706 #endif 2707 #ifdef ENABLE_LE_CENTRAL 2708 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2709 hci_stack->le_whitelist_capacity = packet[6]; 2710 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2711 break; 2712 #endif 2713 #ifdef ENABLE_LE_PERIPHERAL 2714 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2715 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2716 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2717 break; 2718 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2719 if (hci_stack->le_advertising_set_in_current_command != 0) { 2720 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2721 hci_stack->le_advertising_set_in_current_command = 0; 2722 if (advertising_set == NULL) break; 2723 uint8_t adv_status = packet[6]; 2724 uint8_t tx_power = packet[7]; 2725 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 }; 2726 if (adv_status == 0){ 2727 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2728 } 2729 hci_emit_event(event, sizeof(event), 1); 2730 } 2731 break; 2732 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2733 if (hci_stack->le_advertising_set_in_current_command != 0) { 2734 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2735 hci_stack->le_advertising_set_in_current_command = 0; 2736 if (advertising_set == NULL) break; 2737 uint8_t adv_status = packet[5]; 2738 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2739 if (adv_status == 0){ 2740 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2741 } 2742 hci_emit_event(event, sizeof(event), 1); 2743 } 2744 break; 2745 #endif 2746 #endif 2747 case HCI_OPCODE_HCI_READ_BD_ADDR: 2748 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2749 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)); 2750 #ifdef ENABLE_CLASSIC 2751 if (hci_stack->link_key_db){ 2752 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2753 } 2754 #endif 2755 break; 2756 #ifdef ENABLE_CLASSIC 2757 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2758 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2759 break; 2760 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2761 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2762 if (status == ERROR_CODE_SUCCESS) { 2763 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2764 } else { 2765 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2766 } 2767 break; 2768 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2769 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2770 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2771 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2772 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2773 hci_emit_event(event, sizeof(event), 1); 2774 } 2775 break; 2776 #endif 2777 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2778 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2779 2780 #ifdef ENABLE_CLASSIC 2781 // determine usable ACL packet types based on host buffer size and supported features 2782 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2783 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2784 #endif 2785 // Classic/LE 2786 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2787 break; 2788 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2789 manufacturer = little_endian_read_16(packet, 10); 2790 // map Cypress & Infineon to Broadcom 2791 switch (manufacturer){ 2792 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2793 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2794 log_info("Treat Cypress/Infineon as Broadcom"); 2795 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2796 little_endian_store_16(packet, 10, manufacturer); 2797 break; 2798 default: 2799 break; 2800 } 2801 hci_stack->manufacturer = manufacturer; 2802 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2803 break; 2804 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2805 hci_store_local_supported_commands(packet); 2806 break; 2807 #ifdef ENABLE_CLASSIC 2808 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2809 if (packet[5]) return; 2810 hci_stack->synchronous_flow_control_enabled = 1; 2811 break; 2812 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2813 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2814 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2815 conn = hci_connection_for_handle(handle); 2816 if (conn != NULL) { 2817 uint8_t key_size = 0; 2818 if (status == 0){ 2819 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2820 log_info("Handle %04x key Size: %u", handle, key_size); 2821 } else { 2822 key_size = 1; 2823 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2824 } 2825 hci_handle_read_encryption_key_size_complete(conn, key_size); 2826 } 2827 break; 2828 // assert pairing complete event is emitted. 2829 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2830 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2831 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2832 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2833 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2834 // lookup connection by gap pairing addr 2835 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2836 if (conn == NULL) break; 2837 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2838 break; 2839 2840 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2841 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2842 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2843 uint8_t event[67]; 2844 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2845 event[1] = 65; 2846 (void)memset(&event[2], 0, 65); 2847 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2848 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2849 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2850 event[2] = 3; 2851 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2852 } else { 2853 event[2] = 1; 2854 } 2855 } 2856 hci_emit_event(event, sizeof(event), 0); 2857 break; 2858 } 2859 2860 // note: only needed if user does not provide OOB data 2861 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2862 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2863 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2864 if (conn == NULL) break; 2865 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2866 break; 2867 #endif 2868 #endif 2869 #ifdef ENABLE_BLE 2870 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2871 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2872 // lookup CIG 2873 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2874 if (cig != NULL){ 2875 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2876 uint8_t i = 0; 2877 if (status == ERROR_CODE_SUCCESS){ 2878 // assign CIS handles to pre-allocated CIS 2879 btstack_linked_list_iterator_t it; 2880 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2881 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2882 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2883 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2884 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2885 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2886 iso_stream->cis_handle = cis_handle; 2887 cig->cis_con_handles[i] = cis_handle; 2888 i++; 2889 } 2890 } 2891 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2892 hci_emit_cig_created(cig, status); 2893 } else { 2894 hci_emit_cig_created(cig, status); 2895 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2896 } 2897 } 2898 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2899 break; 2900 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2901 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2902 if (status != ERROR_CODE_SUCCESS){ 2903 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2904 } 2905 break; 2906 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2907 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2908 if (status != ERROR_CODE_SUCCESS){ 2909 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2910 } 2911 break; 2912 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2913 // lookup BIG by state 2914 btstack_linked_list_iterator_t it; 2915 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2916 while (btstack_linked_list_iterator_has_next(&it)) { 2917 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2918 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2919 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2920 if (status == ERROR_CODE_SUCCESS){ 2921 big->state_vars.next_bis++; 2922 if (big->state_vars.next_bis == big->num_bis){ 2923 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2924 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2925 } else { 2926 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2927 } 2928 } else { 2929 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2930 big->state_vars.status = status; 2931 } 2932 return; 2933 } 2934 } 2935 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2936 while (btstack_linked_list_iterator_has_next(&it)) { 2937 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2938 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2939 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2940 if (status == ERROR_CODE_SUCCESS){ 2941 big_sync->state_vars.next_bis++; 2942 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2943 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2944 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2945 } else { 2946 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2947 } 2948 } else { 2949 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2950 big_sync->state_vars.status = status; 2951 } 2952 return; 2953 } 2954 } 2955 // Lookup CIS via active group operation 2956 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 2957 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 2958 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2959 2960 // lookup CIS by state 2961 btstack_linked_list_iterator_t it; 2962 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2963 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2964 while (btstack_linked_list_iterator_has_next(&it)){ 2965 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2966 handle = iso_stream->cis_handle; 2967 switch (iso_stream->state){ 2968 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 2969 if (status != ERROR_CODE_SUCCESS){ 2970 hci_iso_stream_finalize(iso_stream); 2971 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, status); 2972 break; 2973 } 2974 if (iso_stream->max_sdu_c_to_p > 0){ 2975 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 2976 } else { 2977 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, ERROR_CODE_SUCCESS); 2978 } 2979 break; 2980 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 2981 if (status != ERROR_CODE_SUCCESS){ 2982 hci_iso_stream_finalize(iso_stream); 2983 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, status); 2984 break; 2985 } 2986 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, ERROR_CODE_SUCCESS); 2987 break; 2988 default: 2989 break; 2990 } 2991 } 2992 } else { 2993 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2994 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2995 if (cig != NULL) { 2996 // emit cis created if all ISO Paths have been created 2997 // assume we are central 2998 uint8_t cis_index = cig->state_vars.next_cis >> 1; 2999 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3000 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3001 // if outgoing has been setup, or incoming was setup but outgoing not required 3002 if ((cis_direction == 1) || (outgoing_needed == false)){ 3003 hci_emit_cis_created(cig->cig_id, cig->cis_con_handles[cis_index], status); 3004 } 3005 // next state 3006 cig->state_vars.next_cis++; 3007 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3008 } 3009 } 3010 } 3011 break; 3012 } 3013 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3014 // lookup BIG by state 3015 btstack_linked_list_iterator_t it; 3016 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3017 while (btstack_linked_list_iterator_has_next(&it)) { 3018 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3019 uint8_t big_handle = big_sync->big_handle; 3020 switch (big_sync->state){ 3021 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3022 btstack_linked_list_iterator_remove(&it); 3023 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3024 return; 3025 default: 3026 btstack_linked_list_iterator_remove(&it); 3027 hci_emit_big_sync_stopped(big_handle); 3028 return; 3029 } 3030 } 3031 break; 3032 } 3033 #endif 3034 #endif 3035 default: 3036 break; 3037 } 3038 } 3039 3040 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3041 UNUSED(size); 3042 3043 // get num cmd packets - limit to 1 to reduce complexity 3044 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3045 3046 // get opcode and command status 3047 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3048 3049 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3050 uint8_t status = hci_event_command_status_get_status(packet); 3051 #endif 3052 3053 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3054 bd_addr_type_t addr_type; 3055 bd_addr_t addr; 3056 #endif 3057 3058 switch (opcode){ 3059 #ifdef ENABLE_CLASSIC 3060 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3061 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3062 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3063 #endif 3064 #ifdef ENABLE_LE_CENTRAL 3065 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3066 #endif 3067 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3068 addr_type = hci_stack->outgoing_addr_type; 3069 memcpy(addr, hci_stack->outgoing_addr, 6); 3070 3071 // reset outgoing address info 3072 memset(hci_stack->outgoing_addr, 0, 6); 3073 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3074 3075 // on error 3076 if (status != ERROR_CODE_SUCCESS){ 3077 #ifdef ENABLE_LE_CENTRAL 3078 if (hci_is_le_connection_type(addr_type)){ 3079 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3080 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3081 } 3082 #endif 3083 // error => outgoing connection failed 3084 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3085 if (conn != NULL){ 3086 hci_handle_connection_failed(conn, status); 3087 } 3088 } 3089 break; 3090 #endif 3091 #ifdef ENABLE_CLASSIC 3092 case HCI_OPCODE_HCI_INQUIRY: 3093 if (status == ERROR_CODE_SUCCESS) { 3094 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3095 } else { 3096 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3097 } 3098 break; 3099 #endif 3100 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3101 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3102 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3103 if (status == ERROR_CODE_SUCCESS){ 3104 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3105 } else { 3106 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3107 } 3108 break; 3109 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3110 default: 3111 break; 3112 } 3113 } 3114 3115 #ifdef ENABLE_BLE 3116 static void event_handle_le_connection_complete(const uint8_t * packet){ 3117 bd_addr_t addr; 3118 bd_addr_type_t addr_type; 3119 hci_connection_t * conn; 3120 3121 // Connection management 3122 reverse_bd_addr(&packet[8], addr); 3123 addr_type = (bd_addr_type_t)packet[7]; 3124 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 3125 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3126 3127 #ifdef ENABLE_LE_CENTRAL 3128 // handle error: error is reported only to the initiator -> outgoing connection 3129 if (packet[3]){ 3130 3131 // handle cancelled outgoing connection 3132 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3133 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3134 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3135 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3136 // reset state 3137 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3138 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3139 // get outgoing connection conn struct for direct connect 3140 conn = gap_get_outgoing_connection(); 3141 } 3142 3143 // outgoing le connection establishment is done 3144 if (conn){ 3145 // remove entry 3146 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3147 btstack_memory_hci_connection_free( conn ); 3148 } 3149 return; 3150 } 3151 #endif 3152 3153 // on success, both hosts receive connection complete event 3154 if (packet[6] == HCI_ROLE_MASTER){ 3155 #ifdef ENABLE_LE_CENTRAL 3156 // if we're master on an le connection, it was an outgoing connection and we're done with it 3157 // note: no hci_connection_t object exists yet for connect with whitelist 3158 if (hci_is_le_connection_type(addr_type)){ 3159 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3160 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3161 } 3162 #endif 3163 } else { 3164 #ifdef ENABLE_LE_PERIPHERAL 3165 // if we're slave, it was an incoming connection, advertisements have stopped 3166 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3167 #endif 3168 } 3169 3170 // LE connections are auto-accepted, so just create a connection if there isn't one already 3171 if (!conn){ 3172 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3173 } 3174 3175 // no memory, sorry. 3176 if (!conn){ 3177 return; 3178 } 3179 3180 conn->state = OPEN; 3181 conn->role = packet[6]; 3182 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3183 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3184 3185 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3186 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3187 3188 #ifdef ENABLE_LE_PERIPHERAL 3189 if (packet[6] == HCI_ROLE_SLAVE){ 3190 hci_update_advertisements_enabled_for_current_roles(); 3191 } 3192 #endif 3193 3194 // init unenhanced att bearer mtu 3195 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3196 conn->att_connection.mtu_exchanged = false; 3197 3198 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3199 3200 // restart timer 3201 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3202 // btstack_run_loop_add_timer(&conn->timeout); 3203 3204 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3205 3206 hci_emit_nr_connections_changed(); 3207 } 3208 #endif 3209 3210 #ifdef ENABLE_CLASSIC 3211 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){ 3212 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3213 // LEVEL_4 is tested by l2cap 3214 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3215 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3216 if (level >= LEVEL_3){ 3217 // MITM not possible without keyboard or display 3218 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3219 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3220 3221 // MITM possible if one side has keyboard and the other has keyboard or display 3222 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3223 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3224 3225 // MITM not possible if one side has only display and other side has no keyboard 3226 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3227 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3228 } 3229 // LEVEL 2 requires SSP, which is a given 3230 return true; 3231 } 3232 3233 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3234 // get requested security level 3235 gap_security_level_t requested_security_level = conn->requested_security_level; 3236 if (hci_stack->gap_secure_connections_only_mode){ 3237 requested_security_level = LEVEL_4; 3238 } 3239 3240 // assess security: LEVEL 4 requires SC 3241 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3242 if ((requested_security_level == LEVEL_4) && 3243 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3244 !hci_remote_sc_enabled(conn)){ 3245 log_info("Level 4 required, but SC not supported -> abort"); 3246 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3247 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3248 return; 3249 } 3250 3251 // assess security based on io capabilities 3252 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3253 // responder: fully validate io caps of both sides as well as OOB data 3254 bool security_possible = false; 3255 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3256 3257 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3258 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3259 // so we merge the OOB data availability 3260 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3261 if (conn->classic_oob_c_192 != NULL){ 3262 have_oob_data |= 1; 3263 } 3264 if (conn->classic_oob_c_256 != NULL){ 3265 have_oob_data |= 2; 3266 } 3267 // for up to Level 3, either P-192 as well as P-256 will do 3268 // 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 3269 // if remote does not SC, we should not receive P-256 data either 3270 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3271 security_possible = true; 3272 } 3273 // for Level 4, P-256 is needed 3274 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3275 security_possible = true; 3276 } 3277 #endif 3278 3279 if (security_possible == false){ 3280 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3281 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3282 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3283 return; 3284 } 3285 } else { 3286 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3287 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3288 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3289 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3290 log_info("Level 3+ required, but no input/output -> abort"); 3291 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3292 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3293 return; 3294 } 3295 #endif 3296 #endif 3297 } 3298 3299 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3300 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3301 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3302 } else { 3303 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3304 } 3305 #endif 3306 } 3307 3308 #endif 3309 3310 static void event_handler(uint8_t *packet, uint16_t size){ 3311 3312 uint16_t event_length = packet[1]; 3313 3314 // assert packet is complete 3315 if (size != (event_length + 2u)){ 3316 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3317 return; 3318 } 3319 3320 hci_con_handle_t handle; 3321 hci_connection_t * conn; 3322 int i; 3323 3324 #ifdef ENABLE_CLASSIC 3325 hci_link_type_t link_type; 3326 bd_addr_t addr; 3327 bd_addr_type_t addr_type; 3328 #endif 3329 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3330 hci_iso_stream_t * iso_stream; 3331 le_audio_big_t * big; 3332 le_audio_big_sync_t * big_sync; 3333 #endif 3334 3335 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3336 3337 switch (hci_event_packet_get_type(packet)) { 3338 3339 case HCI_EVENT_COMMAND_COMPLETE: 3340 handle_command_complete_event(packet, size); 3341 break; 3342 3343 case HCI_EVENT_COMMAND_STATUS: 3344 handle_command_status_event(packet, size); 3345 break; 3346 3347 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3348 if (size < 3) return; 3349 uint16_t num_handles = packet[2]; 3350 if (size != (3u + num_handles * 4u)) return; 3351 #ifdef ENABLE_CLASSIC 3352 bool notify_sco = false; 3353 #endif 3354 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3355 bool notify_iso = false; 3356 #endif 3357 uint16_t offset = 3; 3358 for (i=0; i<num_handles;i++){ 3359 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3360 offset += 2u; 3361 uint16_t num_packets = little_endian_read_16(packet, offset); 3362 offset += 2u; 3363 3364 conn = hci_connection_for_handle(handle); 3365 if (conn != NULL) { 3366 3367 if (conn->num_packets_sent >= num_packets) { 3368 conn->num_packets_sent -= num_packets; 3369 } else { 3370 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3371 conn->num_packets_sent = 0; 3372 } 3373 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3374 #ifdef ENABLE_CLASSIC 3375 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3376 notify_sco = true; 3377 } 3378 #endif 3379 } 3380 3381 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3382 hci_controller_dump_packets(); 3383 #endif 3384 3385 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3386 if (conn == NULL){ 3387 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3388 if (iso_stream != NULL){ 3389 if (iso_stream->num_packets_sent >= num_packets) { 3390 iso_stream->num_packets_sent -= num_packets; 3391 } else { 3392 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3393 iso_stream->num_packets_sent = 0; 3394 } 3395 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3396 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3397 if (big != NULL){ 3398 big->num_completed_timestamp_current_valid = true; 3399 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3400 } 3401 } 3402 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3403 num_packets, handle, iso_stream->num_packets_sent); 3404 notify_iso = true; 3405 } 3406 } 3407 #endif 3408 } 3409 3410 #ifdef ENABLE_CLASSIC 3411 if (notify_sco){ 3412 hci_notify_if_sco_can_send_now(); 3413 } 3414 #endif 3415 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3416 if (notify_iso){ 3417 hci_iso_notify_can_send_now(); 3418 } 3419 #endif 3420 break; 3421 } 3422 3423 #ifdef ENABLE_CLASSIC 3424 case HCI_EVENT_FLUSH_OCCURRED: 3425 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3426 handle = hci_event_flush_occurred_get_handle(packet); 3427 conn = hci_connection_for_handle(handle); 3428 if (conn) { 3429 log_info("Flush occurred, disconnect 0x%04x", handle); 3430 conn->state = SEND_DISCONNECT; 3431 } 3432 break; 3433 3434 case HCI_EVENT_INQUIRY_COMPLETE: 3435 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3436 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3437 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3438 hci_emit_event(event, sizeof(event), 1); 3439 } 3440 break; 3441 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3442 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3443 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3444 } 3445 break; 3446 case HCI_EVENT_CONNECTION_REQUEST: 3447 reverse_bd_addr(&packet[2], addr); 3448 link_type = (hci_link_type_t) packet[11]; 3449 3450 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3451 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3452 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3453 bd_addr_copy(hci_stack->decline_addr, addr); 3454 break; 3455 } 3456 3457 if (hci_stack->gap_classic_accept_callback != NULL){ 3458 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3459 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3460 bd_addr_copy(hci_stack->decline_addr, addr); 3461 break; 3462 } 3463 } 3464 3465 // TODO: eval COD 8-10 3466 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3467 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3468 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3469 if (!conn) { 3470 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3471 } 3472 if (!conn) { 3473 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3474 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3475 bd_addr_copy(hci_stack->decline_addr, addr); 3476 hci_run(); 3477 // avoid event to higher layer 3478 return; 3479 } 3480 conn->role = HCI_ROLE_SLAVE; 3481 conn->state = RECEIVED_CONNECTION_REQUEST; 3482 // store info about eSCO 3483 if (link_type == HCI_LINK_TYPE_ESCO){ 3484 conn->remote_supported_features[0] |= 1; 3485 } 3486 hci_run(); 3487 break; 3488 3489 case HCI_EVENT_CONNECTION_COMPLETE: 3490 // Connection management 3491 reverse_bd_addr(&packet[5], addr); 3492 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3493 addr_type = BD_ADDR_TYPE_ACL; 3494 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3495 if (conn) { 3496 switch (conn->state){ 3497 // expected states 3498 case ACCEPTED_CONNECTION_REQUEST: 3499 case SENT_CREATE_CONNECTION: 3500 break; 3501 // unexpected state -> ignore 3502 default: 3503 // don't forward event to app 3504 return; 3505 } 3506 if (!packet[2]){ 3507 conn->state = OPEN; 3508 conn->con_handle = little_endian_read_16(packet, 3); 3509 3510 // trigger write supervision timeout if we're master 3511 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3512 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3513 } 3514 3515 // trigger write automatic flush timeout 3516 if (hci_stack->automatic_flush_timeout != 0){ 3517 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3518 } 3519 3520 // restart timer 3521 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3522 btstack_run_loop_add_timer(&conn->timeout); 3523 3524 // trigger remote features for dedicated bonding 3525 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3526 hci_trigger_remote_features_for_connection(conn); 3527 } 3528 3529 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3530 3531 hci_emit_nr_connections_changed(); 3532 } else { 3533 // connection failed 3534 hci_handle_connection_failed(conn, packet[2]); 3535 } 3536 } 3537 break; 3538 3539 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3540 reverse_bd_addr(&packet[5], addr); 3541 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3542 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3543 btstack_assert(conn != NULL); 3544 3545 if (packet[2] != ERROR_CODE_SUCCESS){ 3546 // connection failed, remove entry 3547 hci_handle_connection_failed(conn, packet[2]); 3548 break; 3549 } 3550 3551 conn->state = OPEN; 3552 conn->con_handle = little_endian_read_16(packet, 3); 3553 3554 #ifdef ENABLE_SCO_OVER_HCI 3555 // update SCO 3556 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3557 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3558 } 3559 // trigger can send now 3560 if (hci_have_usb_transport()){ 3561 hci_stack->sco_can_send_now = true; 3562 } 3563 #endif 3564 #ifdef HAVE_SCO_TRANSPORT 3565 // configure sco transport 3566 if (hci_stack->sco_transport != NULL){ 3567 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3568 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3569 } 3570 #endif 3571 break; 3572 3573 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3574 handle = little_endian_read_16(packet, 3); 3575 conn = hci_connection_for_handle(handle); 3576 if (!conn) break; 3577 if (!packet[2]){ 3578 const uint8_t * features = &packet[5]; 3579 hci_handle_remote_features_page_0(conn, features); 3580 3581 // read extended features if possible 3582 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3583 && ((conn->remote_supported_features[0] & 2) != 0)) { 3584 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3585 break; 3586 } 3587 } 3588 hci_handle_remote_features_received(conn); 3589 break; 3590 3591 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3592 handle = little_endian_read_16(packet, 3); 3593 conn = hci_connection_for_handle(handle); 3594 if (!conn) break; 3595 // status = ok, page = 1 3596 if (!packet[2]) { 3597 uint8_t page_number = packet[5]; 3598 uint8_t maximum_page_number = packet[6]; 3599 const uint8_t * features = &packet[7]; 3600 bool done = false; 3601 switch (page_number){ 3602 case 1: 3603 hci_handle_remote_features_page_1(conn, features); 3604 if (maximum_page_number >= 2){ 3605 // get Secure Connections (Controller) from Page 2 if available 3606 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3607 } else { 3608 // otherwise, assume SC (Controller) == SC (Host) 3609 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3610 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3611 } 3612 done = true; 3613 } 3614 break; 3615 case 2: 3616 hci_handle_remote_features_page_2(conn, features); 3617 done = true; 3618 break; 3619 default: 3620 break; 3621 } 3622 if (!done) break; 3623 } 3624 hci_handle_remote_features_received(conn); 3625 break; 3626 3627 case HCI_EVENT_LINK_KEY_REQUEST: 3628 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3629 hci_event_link_key_request_get_bd_addr(packet, addr); 3630 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3631 if (!conn) break; 3632 3633 // lookup link key in db if not cached 3634 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3635 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3636 } 3637 3638 // response sent by hci_run() 3639 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3640 #endif 3641 break; 3642 3643 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3644 hci_event_link_key_request_get_bd_addr(packet, addr); 3645 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3646 if (!conn) break; 3647 3648 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3649 3650 // CVE-2020-26555: ignore NULL link key 3651 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3652 if (btstack_is_null(&packet[8], 16)) break; 3653 3654 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3655 // Change Connection Encryption keeps link key type 3656 if (link_key_type != CHANGED_COMBINATION_KEY){ 3657 conn->link_key_type = link_key_type; 3658 } 3659 3660 // cache link key. link keys stored in little-endian format for legacy reasons 3661 memcpy(&conn->link_key, &packet[8], 16); 3662 3663 // only store link key: 3664 // - if bondable enabled 3665 if (hci_stack->bondable == false) break; 3666 // - if security level sufficient 3667 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3668 // - for SSP, also check if remote side requested bonding as well 3669 if (conn->link_key_type != COMBINATION_KEY){ 3670 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3671 if (!remote_bonding){ 3672 break; 3673 } 3674 } 3675 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3676 break; 3677 } 3678 3679 case HCI_EVENT_PIN_CODE_REQUEST: 3680 hci_event_pin_code_request_get_bd_addr(packet, addr); 3681 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3682 if (!conn) break; 3683 3684 hci_pairing_started(conn, false); 3685 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3686 if (!hci_stack->bondable ){ 3687 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3688 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3689 hci_run(); 3690 return; 3691 } 3692 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3693 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3694 log_info("Level 4 required, but SC not supported -> abort"); 3695 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3696 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3697 hci_run(); 3698 return; 3699 } 3700 break; 3701 3702 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3703 hci_event_io_capability_response_get_bd_addr(packet, addr); 3704 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3705 if (!conn) break; 3706 3707 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3708 hci_pairing_started(conn, true); 3709 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3710 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3711 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3712 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3713 #endif 3714 break; 3715 3716 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3717 hci_event_io_capability_response_get_bd_addr(packet, addr); 3718 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3719 if (!conn) break; 3720 3721 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3722 hci_connection_timestamp(conn); 3723 hci_pairing_started(conn, true); 3724 break; 3725 3726 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3727 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3728 hci_event_remote_oob_data_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_connection_timestamp(conn); 3733 3734 hci_pairing_started(conn, true); 3735 3736 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3737 break; 3738 #endif 3739 3740 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3741 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3742 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3743 if (!conn) break; 3744 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3745 if (hci_stack->ssp_auto_accept){ 3746 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3747 }; 3748 } else { 3749 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3750 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3751 // don't forward event to app 3752 hci_run(); 3753 return; 3754 } 3755 break; 3756 3757 case HCI_EVENT_USER_PASSKEY_REQUEST: 3758 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3759 if (hci_stack->ssp_auto_accept){ 3760 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3761 }; 3762 break; 3763 3764 case HCI_EVENT_MODE_CHANGE: 3765 handle = hci_event_mode_change_get_handle(packet); 3766 conn = hci_connection_for_handle(handle); 3767 if (!conn) break; 3768 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3769 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3770 break; 3771 #endif 3772 3773 case HCI_EVENT_ENCRYPTION_CHANGE: 3774 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3775 handle = hci_event_encryption_change_get_connection_handle(packet); 3776 conn = hci_connection_for_handle(handle); 3777 if (!conn) break; 3778 if (hci_event_encryption_change_get_status(packet) == 0u) { 3779 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3780 if (encryption_enabled){ 3781 if (hci_is_le_connection(conn)){ 3782 // For LE, we accept connection as encrypted 3783 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3784 } 3785 #ifdef ENABLE_CLASSIC 3786 else { 3787 3788 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3789 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3790 bool connected_uses_aes_ccm = encryption_enabled == 2; 3791 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3792 log_info("SC during pairing, but only E0 now -> abort"); 3793 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3794 break; 3795 } 3796 3797 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3798 if (connected_uses_aes_ccm){ 3799 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3800 } 3801 3802 #ifdef ENABLE_TESTING_SUPPORT 3803 // work around for issue with PTS dongle 3804 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3805 #endif 3806 // validate encryption key size 3807 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3808 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3809 // already got encryption key size 3810 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3811 } else { 3812 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3813 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3814 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3815 } else { 3816 // if not, pretend everything is perfect 3817 hci_handle_read_encryption_key_size_complete(conn, 16); 3818 } 3819 } 3820 } 3821 #endif 3822 } else { 3823 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3824 } 3825 } else { 3826 uint8_t status = hci_event_encryption_change_get_status(packet); 3827 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3828 conn->bonding_flags &= ~BONDING_DEDICATED; 3829 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3830 conn->bonding_status = status; 3831 } 3832 } 3833 3834 break; 3835 3836 #ifdef ENABLE_CLASSIC 3837 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3838 handle = hci_event_authentication_complete_get_connection_handle(packet); 3839 conn = hci_connection_for_handle(handle); 3840 if (!conn) break; 3841 3842 // clear authentication active flag 3843 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3844 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3845 3846 // authenticated only if auth status == 0 3847 if (hci_event_authentication_complete_get_status(packet) == 0){ 3848 // authenticated 3849 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3850 3851 // If not already encrypted, start encryption 3852 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3853 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3854 break; 3855 } 3856 } 3857 3858 // emit updated security level 3859 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3860 break; 3861 3862 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3863 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3864 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3865 if (!conn) break; 3866 3867 // treat successfully paired connection as authenticated 3868 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3869 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3870 } 3871 3872 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3873 break; 3874 #endif 3875 3876 // HCI_EVENT_DISCONNECTION_COMPLETE 3877 // has been split, to first notify stack before shutting connection down 3878 // see end of function, too. 3879 case HCI_EVENT_DISCONNECTION_COMPLETE: 3880 if (packet[2]) break; // status != 0 3881 handle = little_endian_read_16(packet, 3); 3882 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3883 if (hci_stack->acl_fragmentation_total_size > 0u) { 3884 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3885 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3886 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3887 hci_stack->acl_fragmentation_total_size = 0; 3888 hci_stack->acl_fragmentation_pos = 0; 3889 if (release_buffer){ 3890 hci_release_packet_buffer(); 3891 } 3892 } 3893 } 3894 3895 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3896 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3897 if (hci_stack->iso_fragmentation_total_size > 0u) { 3898 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3899 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3900 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3901 hci_stack->iso_fragmentation_total_size = 0; 3902 hci_stack->iso_fragmentation_pos = 0; 3903 if (release_buffer){ 3904 hci_release_packet_buffer(); 3905 } 3906 } 3907 } 3908 3909 // finalize iso stream for CIS handle 3910 iso_stream = hci_iso_stream_for_con_handle(handle); 3911 if (iso_stream != NULL){ 3912 hci_iso_stream_finalize(iso_stream); 3913 break; 3914 } 3915 3916 // finalize iso stream(s) for ACL handle 3917 btstack_linked_list_iterator_t it; 3918 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3919 while (btstack_linked_list_iterator_has_next(&it)){ 3920 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3921 if (iso_stream->acl_handle == handle ) { 3922 hci_iso_stream_finalize(iso_stream); 3923 } 3924 } 3925 #endif 3926 3927 conn = hci_connection_for_handle(handle); 3928 if (!conn) break; 3929 #ifdef ENABLE_CLASSIC 3930 // pairing failed if it was ongoing 3931 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3932 #endif 3933 3934 // emit dedicatd bonding event 3935 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3936 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3937 } 3938 3939 // mark connection for shutdown, stop timers, reset state 3940 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3941 hci_connection_stop_timer(conn); 3942 hci_connection_init(conn); 3943 3944 #ifdef ENABLE_BLE 3945 #ifdef ENABLE_LE_PERIPHERAL 3946 // re-enable advertisements for le connections if active 3947 if (hci_is_le_connection(conn)){ 3948 hci_update_advertisements_enabled_for_current_roles(); 3949 } 3950 #endif 3951 #endif 3952 break; 3953 3954 case HCI_EVENT_HARDWARE_ERROR: 3955 log_error("Hardware Error: 0x%02x", packet[2]); 3956 if (hci_stack->hardware_error_callback){ 3957 (*hci_stack->hardware_error_callback)(packet[2]); 3958 } else { 3959 // if no special requests, just reboot stack 3960 hci_power_control_off(); 3961 hci_power_control_on(); 3962 } 3963 break; 3964 3965 #ifdef ENABLE_CLASSIC 3966 case HCI_EVENT_ROLE_CHANGE: 3967 if (packet[2]) break; // status != 0 3968 reverse_bd_addr(&packet[3], addr); 3969 addr_type = BD_ADDR_TYPE_ACL; 3970 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3971 if (!conn) break; 3972 conn->role = packet[9]; 3973 break; 3974 #endif 3975 3976 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3977 // release packet buffer only for asynchronous transport and if there are not further fragments 3978 if (hci_transport_synchronous()) { 3979 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3980 return; // instead of break: to avoid re-entering hci_run() 3981 } 3982 hci_stack->acl_fragmentation_tx_active = 0; 3983 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3984 hci_stack->iso_fragmentation_tx_active = 0; 3985 if (hci_stack->iso_fragmentation_total_size) break; 3986 #endif 3987 if (hci_stack->acl_fragmentation_total_size) break; 3988 hci_release_packet_buffer(); 3989 3990 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3991 hci_iso_notify_can_send_now(); 3992 #endif 3993 // L2CAP receives this event via the hci_emit_event below 3994 3995 #ifdef ENABLE_CLASSIC 3996 // For SCO, we do the can_send_now_check here 3997 hci_notify_if_sco_can_send_now(); 3998 #endif 3999 break; 4000 4001 #ifdef ENABLE_CLASSIC 4002 case HCI_EVENT_SCO_CAN_SEND_NOW: 4003 // For SCO, we do the can_send_now_check here 4004 hci_stack->sco_can_send_now = true; 4005 hci_notify_if_sco_can_send_now(); 4006 return; 4007 4008 // explode inquriy results for easier consumption 4009 case HCI_EVENT_INQUIRY_RESULT: 4010 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4011 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4012 gap_inquiry_explode(packet, size); 4013 break; 4014 #endif 4015 4016 #ifdef ENABLE_BLE 4017 case HCI_EVENT_LE_META: 4018 switch (packet[2]){ 4019 #ifdef ENABLE_LE_CENTRAL 4020 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4021 if (!hci_stack->le_scanning_enabled) break; 4022 le_handle_advertisement_report(packet, size); 4023 break; 4024 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4025 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4026 if (!hci_stack->le_scanning_enabled) break; 4027 le_handle_extended_advertisement_report(packet, size); 4028 break; 4029 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4030 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4031 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4032 break; 4033 #endif 4034 #endif 4035 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4036 event_handle_le_connection_complete(packet); 4037 break; 4038 4039 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4040 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4041 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4042 conn = hci_connection_for_handle(handle); 4043 if (!conn) break; 4044 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4045 break; 4046 4047 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4048 // connection 4049 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4050 conn = hci_connection_for_handle(handle); 4051 if (conn) { 4052 // read arguments 4053 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4054 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4055 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4056 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4057 4058 // validate against current connection parameter range 4059 le_connection_parameter_range_t existing_range; 4060 gap_get_connection_parameter_range(&existing_range); 4061 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4062 if (update_parameter){ 4063 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4064 conn->le_conn_interval_min = le_conn_interval_min; 4065 conn->le_conn_interval_max = le_conn_interval_max; 4066 conn->le_conn_latency = le_conn_latency; 4067 conn->le_supervision_timeout = le_supervision_timeout; 4068 } else { 4069 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4070 } 4071 } 4072 break; 4073 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4074 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4075 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4076 conn = hci_connection_for_handle(handle); 4077 if (conn) { 4078 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4079 } 4080 break; 4081 #endif 4082 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4083 case HCI_SUBEVENT_LE_CIS_REQUEST: 4084 // incoming CIS request, allocate iso stream object and cache metadata 4085 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4086 hci_subevent_le_cis_request_get_cig_id(packet), 4087 hci_subevent_le_cis_request_get_cis_id(packet)); 4088 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4089 if (iso_stream != NULL){ 4090 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4091 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4092 } 4093 break; 4094 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4095 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4096 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4097 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4098 iso_stream = hci_iso_stream_for_con_handle(handle); 4099 btstack_assert(iso_stream != NULL); 4100 // track SDU 4101 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4102 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4103 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4104 // CIS Accept by Peripheral 4105 if (status == ERROR_CODE_SUCCESS){ 4106 if (iso_stream->max_sdu_p_to_c > 0){ 4107 // we're peripheral and we will send data 4108 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4109 } else { 4110 // we're peripheral and we will only receive data 4111 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4112 } 4113 } else { 4114 hci_iso_stream_finalize(iso_stream); 4115 hci_emit_cis_created(HCI_ISO_GROUP_ID_INVALID, handle, status); 4116 } 4117 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4118 } else { 4119 // CIG Setup by Central 4120 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4121 btstack_assert(cig != NULL); 4122 // update iso stream state 4123 if (status == ERROR_CODE_SUCCESS){ 4124 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4125 } else { 4126 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4127 } 4128 // update cig state 4129 uint8_t i; 4130 for (i=0;i<cig->num_cis;i++){ 4131 if (cig->cis_con_handles[i] == handle){ 4132 cig->cis_setup_active[i] = false; 4133 if (status == ERROR_CODE_SUCCESS){ 4134 cig->cis_established[i] = true; 4135 } else { 4136 hci_emit_cis_created(cig->cig_id, handle, status); 4137 } 4138 } 4139 } 4140 4141 // trigger iso path setup if complete 4142 bool cis_setup_active = false; 4143 for (i=0;i<cig->num_cis;i++){ 4144 cis_setup_active |= cig->cis_setup_active[i]; 4145 } 4146 if (cis_setup_active == false){ 4147 cig->state_vars.next_cis = 0; 4148 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4149 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4150 } 4151 } 4152 } 4153 break; 4154 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4155 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4156 big = hci_big_for_handle(packet[4]); 4157 if (big != NULL){ 4158 uint8_t status = packet[3]; 4159 if (status == ERROR_CODE_SUCCESS){ 4160 // store bis_con_handles and trigger iso path setup 4161 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4162 uint8_t i; 4163 for (i=0;i<num_bis;i++){ 4164 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4165 big->bis_con_handles[i] = bis_handle; 4166 // assign bis handle 4167 btstack_linked_list_iterator_t it; 4168 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4169 while (btstack_linked_list_iterator_has_next(&it)){ 4170 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4171 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4172 (iso_stream->group_id == big->big_handle)){ 4173 iso_stream->cis_handle = bis_handle; 4174 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4175 break; 4176 } 4177 } 4178 } 4179 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4180 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4181 big->state_vars.next_bis = 0; 4182 } 4183 } else { 4184 // create BIG failed or has been stopped by us 4185 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4186 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4187 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4188 hci_emit_big_created(big, status); 4189 } else { 4190 hci_emit_big_terminated(big); 4191 } 4192 } 4193 } 4194 break; 4195 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4196 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4197 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4198 if (big != NULL){ 4199 // finalize associated ISO streams 4200 btstack_linked_list_iterator_t it; 4201 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4202 while (btstack_linked_list_iterator_has_next(&it)){ 4203 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4204 if (iso_stream->group_id == big->big_handle){ 4205 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4206 btstack_linked_list_iterator_remove(&it); 4207 btstack_memory_hci_iso_stream_free(iso_stream); 4208 } 4209 } 4210 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4211 switch (big->state){ 4212 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4213 hci_emit_big_created(big, big->state_vars.status); 4214 break; 4215 default: 4216 hci_emit_big_terminated(big); 4217 break; 4218 } 4219 } 4220 break; 4221 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4222 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4223 big_sync = hci_big_sync_for_handle(packet[4]); 4224 if (big_sync != NULL){ 4225 uint8_t status = packet[3]; 4226 uint8_t big_handle = packet[4]; 4227 if (status == ERROR_CODE_SUCCESS){ 4228 // store bis_con_handles and trigger iso path setup 4229 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4230 uint8_t i; 4231 for (i=0;i<num_bis;i++){ 4232 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4233 } 4234 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4235 // trigger iso path setup 4236 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4237 big_sync->state_vars.next_bis = 0; 4238 } 4239 } else { 4240 // create BIG Sync failed or has been stopped by us 4241 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4242 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4243 hci_emit_big_sync_created(big_sync, status); 4244 } else { 4245 hci_emit_big_sync_stopped(big_handle); 4246 } 4247 } 4248 } 4249 break; 4250 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4251 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4252 big_sync = hci_big_sync_for_handle(packet[4]); 4253 if (big_sync != NULL){ 4254 uint8_t big_handle = packet[4]; 4255 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4256 hci_emit_big_sync_stopped(big_handle); 4257 } 4258 break; 4259 #endif 4260 default: 4261 break; 4262 } 4263 break; 4264 #endif 4265 case HCI_EVENT_VENDOR_SPECIFIC: 4266 // Vendor specific commands often create vendor specific event instead of num completed packets 4267 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4268 switch (hci_stack->manufacturer){ 4269 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4270 hci_stack->num_cmd_packets = 1; 4271 break; 4272 default: 4273 break; 4274 } 4275 break; 4276 default: 4277 break; 4278 } 4279 4280 handle_event_for_current_stack_state(packet, size); 4281 4282 // notify upper stack 4283 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4284 4285 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4286 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4287 handle = little_endian_read_16(packet, 3); 4288 hci_connection_t * aConn = hci_connection_for_handle(handle); 4289 // discard connection if app did not trigger a reconnect in the event handler 4290 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4291 hci_shutdown_connection(aConn); 4292 } 4293 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4294 hci_controller_dump_packets(); 4295 #endif 4296 } 4297 4298 // execute main loop 4299 hci_run(); 4300 } 4301 4302 #ifdef ENABLE_CLASSIC 4303 4304 #ifdef ENABLE_SCO_OVER_HCI 4305 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4306 static void sco_schedule_tx(hci_connection_t * conn); 4307 4308 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4309 log_debug("SCO TX Timeout"); 4310 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4311 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4312 if (!conn) return; 4313 4314 // trigger send 4315 conn->sco_tx_ready = 1; 4316 // extra packet if CVSD but SCO buffer is too short 4317 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4318 conn->sco_tx_ready++; 4319 } 4320 hci_notify_if_sco_can_send_now(); 4321 } 4322 4323 4324 #define SCO_TX_AFTER_RX_MS (6) 4325 4326 static void sco_schedule_tx(hci_connection_t * conn){ 4327 4328 uint32_t now = btstack_run_loop_get_time_ms(); 4329 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4330 int time_delta_ms = sco_tx_ms - now; 4331 4332 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4333 4334 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4335 btstack_run_loop_remove_timer(timer); 4336 btstack_run_loop_set_timer(timer, time_delta_ms); 4337 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4338 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4339 btstack_run_loop_add_timer(timer); 4340 } 4341 #endif 4342 4343 static void sco_handler(uint8_t * packet, uint16_t size){ 4344 // lookup connection struct 4345 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4346 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4347 if (!conn) return; 4348 4349 #ifdef ENABLE_SCO_OVER_HCI 4350 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4351 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4352 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4353 packet[2] = 0x3c; 4354 memmove(&packet[3], &packet[23], 63); 4355 size = 63; 4356 } 4357 } 4358 4359 if (hci_have_usb_transport()){ 4360 // Nothing to do 4361 } else { 4362 // 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); 4363 if (hci_stack->synchronous_flow_control_enabled == 0){ 4364 uint32_t now = btstack_run_loop_get_time_ms(); 4365 4366 if (!conn->sco_rx_valid){ 4367 // ignore first 10 packets 4368 conn->sco_rx_count++; 4369 // log_debug("sco rx count %u", conn->sco_rx_count); 4370 if (conn->sco_rx_count == 10) { 4371 // use first timestamp as is and pretent it just started 4372 conn->sco_rx_ms = now; 4373 conn->sco_rx_valid = 1; 4374 conn->sco_rx_count = 0; 4375 sco_schedule_tx(conn); 4376 } 4377 } else { 4378 // track expected arrival timme 4379 conn->sco_rx_count++; 4380 conn->sco_rx_ms += 7; 4381 int delta = (int32_t) (now - conn->sco_rx_ms); 4382 if (delta > 0){ 4383 conn->sco_rx_ms++; 4384 } 4385 // log_debug("sco rx %u", conn->sco_rx_ms); 4386 sco_schedule_tx(conn); 4387 } 4388 } 4389 } 4390 #endif 4391 4392 // deliver to app 4393 if (hci_stack->sco_packet_handler) { 4394 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4395 } 4396 4397 #ifdef HAVE_SCO_TRANSPORT 4398 // We can send one packet for each received packet 4399 conn->sco_tx_ready++; 4400 hci_notify_if_sco_can_send_now(); 4401 #endif 4402 4403 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4404 conn->num_packets_completed++; 4405 hci_stack->host_completed_packets = 1; 4406 hci_run(); 4407 #endif 4408 } 4409 #endif 4410 4411 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4412 hci_dump_packet(packet_type, 1, packet, size); 4413 switch (packet_type) { 4414 case HCI_EVENT_PACKET: 4415 event_handler(packet, size); 4416 break; 4417 case HCI_ACL_DATA_PACKET: 4418 acl_handler(packet, size); 4419 break; 4420 #ifdef ENABLE_CLASSIC 4421 case HCI_SCO_DATA_PACKET: 4422 sco_handler(packet, size); 4423 break; 4424 #endif 4425 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4426 case HCI_ISO_DATA_PACKET: 4427 hci_iso_packet_handler(packet, size); 4428 break; 4429 #endif 4430 default: 4431 break; 4432 } 4433 } 4434 4435 /** 4436 * @brief Add event packet handler. 4437 */ 4438 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4439 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4440 } 4441 4442 /** 4443 * @brief Remove event packet handler. 4444 */ 4445 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4446 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4447 } 4448 4449 /** Register HCI packet handlers */ 4450 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4451 hci_stack->acl_packet_handler = handler; 4452 } 4453 4454 #ifdef ENABLE_CLASSIC 4455 /** 4456 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4457 */ 4458 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4459 hci_stack->sco_packet_handler = handler; 4460 } 4461 #endif 4462 4463 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4464 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4465 hci_stack->iso_packet_handler = handler; 4466 } 4467 #endif 4468 4469 static void hci_state_reset(void){ 4470 // no connections yet 4471 hci_stack->connections = NULL; 4472 4473 // keep discoverable/connectable as this has been requested by the client(s) 4474 // hci_stack->discoverable = 0; 4475 // hci_stack->connectable = 0; 4476 // hci_stack->bondable = 1; 4477 // hci_stack->own_addr_type = 0; 4478 4479 // buffer is free 4480 hci_stack->hci_packet_buffer_reserved = false; 4481 4482 // no pending cmds 4483 hci_stack->decline_reason = 0; 4484 4485 hci_stack->secure_connections_active = false; 4486 4487 #ifdef ENABLE_CLASSIC 4488 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4489 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4490 4491 hci_stack->gap_tasks_classic = 4492 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4493 GAP_TASK_SET_CLASS_OF_DEVICE | 4494 GAP_TASK_SET_LOCAL_NAME | 4495 GAP_TASK_SET_EIR_DATA | 4496 GAP_TASK_WRITE_SCAN_ENABLE | 4497 GAP_TASK_WRITE_PAGE_TIMEOUT; 4498 #endif 4499 4500 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4501 hci_stack->classic_read_local_oob_data = false; 4502 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4503 #endif 4504 4505 // LE 4506 #ifdef ENABLE_BLE 4507 memset(hci_stack->le_random_address, 0, 6); 4508 hci_stack->le_random_address_set = 0; 4509 #endif 4510 #ifdef ENABLE_LE_CENTRAL 4511 hci_stack->le_scanning_active = false; 4512 hci_stack->le_scanning_param_update = true; 4513 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4514 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4515 hci_stack->le_whitelist_capacity = 0; 4516 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4517 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4518 #endif 4519 #endif 4520 #ifdef ENABLE_LE_PERIPHERAL 4521 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4522 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4523 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4524 } 4525 if (hci_stack->le_advertisements_data != NULL){ 4526 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4527 } 4528 #endif 4529 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4530 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4531 #endif 4532 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4533 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4534 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4535 #endif 4536 } 4537 4538 #ifdef ENABLE_CLASSIC 4539 /** 4540 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4541 */ 4542 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4543 // store and open remote device db 4544 hci_stack->link_key_db = link_key_db; 4545 if (hci_stack->link_key_db) { 4546 hci_stack->link_key_db->open(); 4547 } 4548 } 4549 #endif 4550 4551 void hci_init(const hci_transport_t *transport, const void *config){ 4552 4553 #ifdef HAVE_MALLOC 4554 if (!hci_stack) { 4555 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4556 } 4557 #else 4558 hci_stack = &hci_stack_static; 4559 #endif 4560 memset(hci_stack, 0, sizeof(hci_stack_t)); 4561 4562 // reference to use transport layer implementation 4563 hci_stack->hci_transport = transport; 4564 4565 // reference to used config 4566 hci_stack->config = config; 4567 4568 // setup pointer for outgoing packet buffer 4569 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4570 4571 // max acl payload size defined in config.h 4572 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4573 4574 // register packet handlers with transport 4575 transport->register_packet_handler(&packet_handler); 4576 4577 hci_stack->state = HCI_STATE_OFF; 4578 4579 // class of device 4580 hci_stack->class_of_device = 0x007a020c; // Smartphone 4581 4582 // bondable by default 4583 hci_stack->bondable = 1; 4584 4585 #ifdef ENABLE_CLASSIC 4586 // classic name 4587 hci_stack->local_name = default_classic_name; 4588 4589 // Master slave policy 4590 hci_stack->master_slave_policy = 1; 4591 4592 // Allow Role Switch 4593 hci_stack->allow_role_switch = 1; 4594 4595 // Default / minimum security level = 2 4596 hci_stack->gap_security_level = LEVEL_2; 4597 4598 // Default Security Mode 4 4599 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4600 4601 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4602 hci_stack->gap_required_encyrption_key_size = 7; 4603 4604 // Link Supervision Timeout 4605 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4606 4607 #endif 4608 4609 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4610 hci_stack->ssp_enable = 1; 4611 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4612 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4613 hci_stack->ssp_auto_accept = 1; 4614 4615 // Secure Connections: enable (requires support from Controller) 4616 hci_stack->secure_connections_enable = true; 4617 4618 // voice setting - signed 16 bit pcm data with CVSD over the air 4619 hci_stack->sco_voice_setting = 0x60; 4620 4621 #ifdef ENABLE_LE_CENTRAL 4622 // connection parameter to use for outgoing connections 4623 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4624 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4625 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4626 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4627 hci_stack->le_connection_latency = 4; // 4 4628 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4629 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 4630 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 4631 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4632 4633 // default LE Scanning 4634 hci_stack->le_scan_type = 0x01; // active 4635 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4636 hci_stack->le_scan_window = 0x30; // 30 ms 4637 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4638 #endif 4639 4640 #ifdef ENABLE_LE_PERIPHERAL 4641 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4642 4643 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4644 hci_stack->le_advertisements_interval_min = 0x0800; 4645 hci_stack->le_advertisements_interval_max = 0x0800; 4646 hci_stack->le_advertisements_type = 0; 4647 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4648 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4649 hci_stack->le_advertisements_channel_map = 0x07; 4650 hci_stack->le_advertisements_filter_policy = 0; 4651 #endif 4652 4653 // connection parameter range used to answer connection parameter update requests in l2cap 4654 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4655 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4656 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4657 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4658 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4659 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4660 4661 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4662 hci_stack->iso_packets_to_queue = 1; 4663 #endif 4664 4665 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4666 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4667 #endif 4668 4669 hci_state_reset(); 4670 } 4671 4672 void hci_deinit(void){ 4673 btstack_run_loop_remove_timer(&hci_stack->timeout); 4674 #ifdef HAVE_MALLOC 4675 if (hci_stack) { 4676 free(hci_stack); 4677 } 4678 #endif 4679 hci_stack = NULL; 4680 4681 #ifdef ENABLE_CLASSIC 4682 disable_l2cap_timeouts = 0; 4683 #endif 4684 } 4685 4686 /** 4687 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4688 */ 4689 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4690 hci_stack->chipset = chipset_driver; 4691 4692 // reset chipset driver - init is also called on power_up 4693 if (hci_stack->chipset && hci_stack->chipset->init){ 4694 hci_stack->chipset->init(hci_stack->config); 4695 } 4696 } 4697 4698 void hci_enable_custom_pre_init(void){ 4699 hci_stack->chipset_pre_init = true; 4700 } 4701 4702 /** 4703 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4704 */ 4705 void hci_set_control(const btstack_control_t *hardware_control){ 4706 // references to used control implementation 4707 hci_stack->control = hardware_control; 4708 // init with transport config 4709 hardware_control->init(hci_stack->config); 4710 } 4711 4712 static void hci_discard_connections(void){ 4713 btstack_linked_list_iterator_t it; 4714 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4715 while (btstack_linked_list_iterator_has_next(&it)){ 4716 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4717 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4718 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4719 hci_shutdown_connection(connection); 4720 } 4721 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4722 while (hci_stack->iso_streams != NULL){ 4723 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4724 } 4725 #endif 4726 } 4727 4728 void hci_close(void){ 4729 4730 #ifdef ENABLE_CLASSIC 4731 // close remote device db 4732 if (hci_stack->link_key_db) { 4733 hci_stack->link_key_db->close(); 4734 } 4735 #endif 4736 4737 hci_discard_connections(); 4738 4739 hci_power_control(HCI_POWER_OFF); 4740 4741 #ifdef HAVE_MALLOC 4742 free(hci_stack); 4743 #endif 4744 hci_stack = NULL; 4745 } 4746 4747 #ifdef HAVE_SCO_TRANSPORT 4748 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4749 hci_stack->sco_transport = sco_transport; 4750 sco_transport->register_packet_handler(&packet_handler); 4751 } 4752 #endif 4753 4754 #ifdef ENABLE_CLASSIC 4755 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4756 // validate ranage and set 4757 if (encryption_key_size < 7) return; 4758 if (encryption_key_size > 16) return; 4759 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4760 } 4761 4762 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4763 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4764 hci_stack->gap_security_mode = security_mode; 4765 return ERROR_CODE_SUCCESS; 4766 } else { 4767 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4768 } 4769 } 4770 4771 gap_security_mode_t gap_get_security_mode(void){ 4772 return hci_stack->gap_security_mode; 4773 } 4774 4775 void gap_set_security_level(gap_security_level_t security_level){ 4776 hci_stack->gap_security_level = security_level; 4777 } 4778 4779 gap_security_level_t gap_get_security_level(void){ 4780 if (hci_stack->gap_secure_connections_only_mode){ 4781 return LEVEL_4; 4782 } 4783 return hci_stack->gap_security_level; 4784 } 4785 4786 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4787 hci_stack->gap_minimal_service_security_level = security_level; 4788 } 4789 4790 void gap_set_secure_connections_only_mode(bool enable){ 4791 hci_stack->gap_secure_connections_only_mode = enable; 4792 } 4793 4794 bool gap_get_secure_connections_only_mode(void){ 4795 return hci_stack->gap_secure_connections_only_mode; 4796 } 4797 #endif 4798 4799 #ifdef ENABLE_CLASSIC 4800 void gap_set_class_of_device(uint32_t class_of_device){ 4801 hci_stack->class_of_device = class_of_device; 4802 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4803 hci_run(); 4804 } 4805 4806 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4807 hci_stack->default_link_policy_settings = default_link_policy_settings; 4808 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4809 hci_run(); 4810 } 4811 4812 void gap_set_allow_role_switch(bool allow_role_switch){ 4813 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4814 } 4815 4816 uint8_t hci_get_allow_role_switch(void){ 4817 return hci_stack->allow_role_switch; 4818 } 4819 4820 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4821 hci_stack->link_supervision_timeout = link_supervision_timeout; 4822 } 4823 4824 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4825 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4826 } 4827 4828 uint16_t hci_automatic_flush_timeout(void){ 4829 return hci_stack->automatic_flush_timeout; 4830 } 4831 4832 void hci_disable_l2cap_timeout_check(void){ 4833 disable_l2cap_timeouts = 1; 4834 } 4835 #endif 4836 4837 #ifndef HAVE_HOST_CONTROLLER_API 4838 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4839 void hci_set_bd_addr(bd_addr_t addr){ 4840 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4841 hci_stack->custom_bd_addr_set = 1; 4842 } 4843 #endif 4844 4845 // State-Module-Driver overview 4846 // state module low-level 4847 // HCI_STATE_OFF off close 4848 // HCI_STATE_INITIALIZING, on open 4849 // HCI_STATE_WORKING, on open 4850 // HCI_STATE_HALTING, on open 4851 // HCI_STATE_SLEEPING, off/sleep close 4852 // HCI_STATE_FALLING_ASLEEP on open 4853 4854 static int hci_power_control_on(void){ 4855 4856 // power on 4857 int err = 0; 4858 if (hci_stack->control && hci_stack->control->on){ 4859 err = (*hci_stack->control->on)(); 4860 } 4861 if (err){ 4862 log_error( "POWER_ON failed"); 4863 hci_emit_hci_open_failed(); 4864 return err; 4865 } 4866 4867 // int chipset driver 4868 if (hci_stack->chipset && hci_stack->chipset->init){ 4869 hci_stack->chipset->init(hci_stack->config); 4870 } 4871 4872 // init transport 4873 if (hci_stack->hci_transport->init){ 4874 hci_stack->hci_transport->init(hci_stack->config); 4875 } 4876 4877 // open transport 4878 err = hci_stack->hci_transport->open(); 4879 if (err){ 4880 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4881 if (hci_stack->control && hci_stack->control->off){ 4882 (*hci_stack->control->off)(); 4883 } 4884 hci_emit_hci_open_failed(); 4885 return err; 4886 } 4887 return 0; 4888 } 4889 4890 static void hci_power_control_off(void){ 4891 4892 log_info("hci_power_control_off"); 4893 4894 // close low-level device 4895 hci_stack->hci_transport->close(); 4896 4897 log_info("hci_power_control_off - hci_transport closed"); 4898 4899 // power off 4900 if (hci_stack->control && hci_stack->control->off){ 4901 (*hci_stack->control->off)(); 4902 } 4903 4904 log_info("hci_power_control_off - control closed"); 4905 4906 hci_stack->state = HCI_STATE_OFF; 4907 } 4908 4909 static void hci_power_control_sleep(void){ 4910 4911 log_info("hci_power_control_sleep"); 4912 4913 #if 0 4914 // don't close serial port during sleep 4915 4916 // close low-level device 4917 hci_stack->hci_transport->close(hci_stack->config); 4918 #endif 4919 4920 // sleep mode 4921 if (hci_stack->control && hci_stack->control->sleep){ 4922 (*hci_stack->control->sleep)(); 4923 } 4924 4925 hci_stack->state = HCI_STATE_SLEEPING; 4926 } 4927 4928 static int hci_power_control_wake(void){ 4929 4930 log_info("hci_power_control_wake"); 4931 4932 // wake on 4933 if (hci_stack->control && hci_stack->control->wake){ 4934 (*hci_stack->control->wake)(); 4935 } 4936 4937 #if 0 4938 // open low-level device 4939 int err = hci_stack->hci_transport->open(hci_stack->config); 4940 if (err){ 4941 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4942 if (hci_stack->control && hci_stack->control->off){ 4943 (*hci_stack->control->off)(); 4944 } 4945 hci_emit_hci_open_failed(); 4946 return err; 4947 } 4948 #endif 4949 4950 return 0; 4951 } 4952 4953 static void hci_power_enter_initializing_state(void){ 4954 // set up state machine 4955 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4956 hci_stack->hci_packet_buffer_reserved = false; 4957 hci_stack->state = HCI_STATE_INITIALIZING; 4958 4959 if (hci_stack->chipset_pre_init) { 4960 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 4961 } else { 4962 hci_stack->substate = HCI_INIT_SEND_RESET; 4963 } 4964 } 4965 4966 static void hci_power_enter_halting_state(void){ 4967 #ifdef ENABLE_BLE 4968 // drop entries scheduled for removal, mark others for re-adding 4969 btstack_linked_list_iterator_t it; 4970 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 4971 while (btstack_linked_list_iterator_has_next(&it)){ 4972 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 4973 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 4974 btstack_linked_list_iterator_remove(&it); 4975 btstack_memory_whitelist_entry_free(entry); 4976 } else { 4977 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 4978 } 4979 } 4980 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4981 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 4982 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 4983 while (btstack_linked_list_iterator_has_next(&it)){ 4984 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 4985 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 4986 btstack_linked_list_iterator_remove(&it); 4987 btstack_memory_periodic_advertiser_list_entry_free(entry); 4988 } else { 4989 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 4990 continue; 4991 } 4992 } 4993 #endif 4994 #endif 4995 // see hci_run 4996 hci_stack->state = HCI_STATE_HALTING; 4997 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4998 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4999 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5000 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5001 btstack_run_loop_add_timer(&hci_stack->timeout); 5002 } 5003 5004 // returns error 5005 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5006 int err; 5007 switch (power_mode){ 5008 case HCI_POWER_ON: 5009 err = hci_power_control_on(); 5010 if (err != 0) { 5011 log_error("hci_power_control_on() error %d", err); 5012 return err; 5013 } 5014 hci_power_enter_initializing_state(); 5015 break; 5016 case HCI_POWER_OFF: 5017 // do nothing 5018 break; 5019 case HCI_POWER_SLEEP: 5020 // do nothing (with SLEEP == OFF) 5021 break; 5022 default: 5023 btstack_assert(false); 5024 break; 5025 } 5026 return ERROR_CODE_SUCCESS; 5027 } 5028 5029 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5030 switch (power_mode){ 5031 case HCI_POWER_ON: 5032 // do nothing 5033 break; 5034 case HCI_POWER_OFF: 5035 // no connections yet, just turn it off 5036 hci_power_control_off(); 5037 break; 5038 case HCI_POWER_SLEEP: 5039 // no connections yet, just turn it off 5040 hci_power_control_sleep(); 5041 break; 5042 default: 5043 btstack_assert(false); 5044 break; 5045 } 5046 return ERROR_CODE_SUCCESS; 5047 } 5048 5049 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5050 switch (power_mode){ 5051 case HCI_POWER_ON: 5052 // do nothing 5053 break; 5054 case HCI_POWER_OFF: 5055 hci_power_enter_halting_state(); 5056 break; 5057 case HCI_POWER_SLEEP: 5058 // see hci_run 5059 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5060 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5061 break; 5062 default: 5063 btstack_assert(false); 5064 break; 5065 } 5066 return ERROR_CODE_SUCCESS; 5067 } 5068 5069 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5070 switch (power_mode){ 5071 case HCI_POWER_ON: 5072 hci_power_enter_initializing_state(); 5073 break; 5074 case HCI_POWER_OFF: 5075 // do nothing 5076 break; 5077 case HCI_POWER_SLEEP: 5078 // see hci_run 5079 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5080 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5081 break; 5082 default: 5083 btstack_assert(false); 5084 break; 5085 } 5086 return ERROR_CODE_SUCCESS; 5087 } 5088 5089 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5090 switch (power_mode){ 5091 case HCI_POWER_ON: 5092 hci_power_enter_initializing_state(); 5093 break; 5094 case HCI_POWER_OFF: 5095 hci_power_enter_halting_state(); 5096 break; 5097 case HCI_POWER_SLEEP: 5098 // do nothing 5099 break; 5100 default: 5101 btstack_assert(false); 5102 break; 5103 } 5104 return ERROR_CODE_SUCCESS; 5105 } 5106 5107 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5108 int err; 5109 switch (power_mode){ 5110 case HCI_POWER_ON: 5111 err = hci_power_control_wake(); 5112 if (err) return err; 5113 hci_power_enter_initializing_state(); 5114 break; 5115 case HCI_POWER_OFF: 5116 hci_power_enter_halting_state(); 5117 break; 5118 case HCI_POWER_SLEEP: 5119 // do nothing 5120 break; 5121 default: 5122 btstack_assert(false); 5123 break; 5124 } 5125 return ERROR_CODE_SUCCESS; 5126 } 5127 5128 int hci_power_control(HCI_POWER_MODE power_mode){ 5129 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5130 btstack_run_loop_remove_timer(&hci_stack->timeout); 5131 int err = 0; 5132 switch (hci_stack->state){ 5133 case HCI_STATE_OFF: 5134 err = hci_power_control_state_off(power_mode); 5135 break; 5136 case HCI_STATE_INITIALIZING: 5137 err = hci_power_control_state_initializing(power_mode); 5138 break; 5139 case HCI_STATE_WORKING: 5140 err = hci_power_control_state_working(power_mode); 5141 break; 5142 case HCI_STATE_HALTING: 5143 err = hci_power_control_state_halting(power_mode); 5144 break; 5145 case HCI_STATE_FALLING_ASLEEP: 5146 err = hci_power_control_state_falling_asleep(power_mode); 5147 break; 5148 case HCI_STATE_SLEEPING: 5149 err = hci_power_control_state_sleeping(power_mode); 5150 break; 5151 default: 5152 btstack_assert(false); 5153 break; 5154 } 5155 if (err != 0){ 5156 return err; 5157 } 5158 5159 // create internal event 5160 hci_emit_state(); 5161 5162 // trigger next/first action 5163 hci_run(); 5164 5165 return 0; 5166 } 5167 5168 5169 static void hci_halting_run(void) { 5170 5171 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5172 5173 hci_connection_t *connection; 5174 #ifdef ENABLE_BLE 5175 #ifdef ENABLE_LE_PERIPHERAL 5176 bool stop_advertismenets; 5177 #endif 5178 #endif 5179 5180 switch (hci_stack->substate) { 5181 case HCI_HALTING_CLASSIC_STOP: 5182 #ifdef ENABLE_CLASSIC 5183 if (!hci_can_send_command_packet_now()) return; 5184 5185 if (hci_stack->connectable || hci_stack->discoverable){ 5186 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5187 hci_send_cmd(&hci_write_scan_enable, 0); 5188 return; 5189 } 5190 #endif 5191 /* fall through */ 5192 5193 case HCI_HALTING_LE_ADV_STOP: 5194 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5195 5196 #ifdef ENABLE_BLE 5197 #ifdef ENABLE_LE_PERIPHERAL 5198 if (!hci_can_send_command_packet_now()) return; 5199 5200 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5201 5202 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5203 if (hci_extended_advertising_supported()){ 5204 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5205 btstack_linked_list_iterator_t it; 5206 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5207 // stop all periodic advertisements and check if an extended set is active 5208 while (btstack_linked_list_iterator_has_next(&it)){ 5209 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5210 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5211 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5212 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5213 return; 5214 } 5215 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5216 stop_advertismenets = true; 5217 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5218 } 5219 } 5220 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5221 if (stop_advertismenets){ 5222 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5223 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5224 return; 5225 } 5226 } else 5227 #else /* ENABLE_LE_PERIPHERAL */ 5228 { 5229 if (stop_advertismenets) { 5230 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5231 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5232 return; 5233 } 5234 } 5235 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5236 #endif /* ENABLE_LE_PERIPHERAL */ 5237 #endif /* ENABLE_BLE */ 5238 5239 /* fall through */ 5240 5241 case HCI_HALTING_LE_SCAN_STOP: 5242 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5243 if (!hci_can_send_command_packet_now()) return; 5244 5245 #ifdef ENABLE_BLE 5246 #ifdef ENABLE_LE_CENTRAL 5247 if (hci_stack->le_scanning_active){ 5248 hci_le_scan_stop(); 5249 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5250 return; 5251 } 5252 #endif 5253 #endif 5254 5255 /* fall through */ 5256 5257 case HCI_HALTING_DISCONNECT_ALL: 5258 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5259 if (!hci_can_send_command_packet_now()) return; 5260 5261 // close all open connections 5262 connection = (hci_connection_t *) hci_stack->connections; 5263 if (connection) { 5264 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5265 5266 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5267 5268 // check state 5269 switch(connection->state) { 5270 case SENT_DISCONNECT: 5271 case RECEIVED_DISCONNECTION_COMPLETE: 5272 // wait until connection is gone 5273 return; 5274 default: 5275 break; 5276 } 5277 5278 // finally, send the disconnect command 5279 connection->state = SENT_DISCONNECT; 5280 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5281 return; 5282 } 5283 5284 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5285 // stop BIGs and BIG Syncs 5286 if (hci_stack->le_audio_bigs != NULL){ 5287 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5288 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5289 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5290 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5291 return; 5292 } 5293 if (hci_stack->le_audio_big_syncs != NULL){ 5294 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5295 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5296 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5297 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5298 return; 5299 } 5300 #endif 5301 5302 btstack_run_loop_remove_timer(&hci_stack->timeout); 5303 5304 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5305 log_info("HCI_STATE_HALTING: wait 50 ms"); 5306 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5307 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5308 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5309 btstack_run_loop_add_timer(&hci_stack->timeout); 5310 break; 5311 5312 case HCI_HALTING_W4_CLOSE_TIMER: 5313 // keep waiting 5314 break; 5315 5316 case HCI_HALTING_CLOSE: 5317 // close left over connections (that had not been properly closed before) 5318 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5319 hci_discard_connections(); 5320 5321 log_info("HCI_STATE_HALTING, calling off"); 5322 5323 // switch mode 5324 hci_power_control_off(); 5325 5326 log_info("HCI_STATE_HALTING, emitting state"); 5327 hci_emit_state(); 5328 log_info("HCI_STATE_HALTING, done"); 5329 break; 5330 5331 default: 5332 break; 5333 } 5334 }; 5335 5336 static void hci_falling_asleep_run(void){ 5337 hci_connection_t * connection; 5338 switch(hci_stack->substate) { 5339 case HCI_FALLING_ASLEEP_DISCONNECT: 5340 log_info("HCI_STATE_FALLING_ASLEEP"); 5341 // close all open connections 5342 connection = (hci_connection_t *) hci_stack->connections; 5343 if (connection){ 5344 5345 // send disconnect 5346 if (!hci_can_send_command_packet_now()) return; 5347 5348 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5349 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5350 5351 // send disconnected event right away - causes higher layer connections to get closed, too. 5352 hci_shutdown_connection(connection); 5353 return; 5354 } 5355 5356 if (hci_classic_supported()){ 5357 // disable page and inquiry scan 5358 if (!hci_can_send_command_packet_now()) return; 5359 5360 log_info("HCI_STATE_HALTING, disabling inq scans"); 5361 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5362 5363 // continue in next sub state 5364 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5365 break; 5366 } 5367 5368 /* fall through */ 5369 5370 case HCI_FALLING_ASLEEP_COMPLETE: 5371 log_info("HCI_STATE_HALTING, calling sleep"); 5372 // switch mode 5373 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5374 hci_emit_state(); 5375 break; 5376 5377 default: 5378 break; 5379 } 5380 } 5381 5382 #ifdef ENABLE_CLASSIC 5383 5384 static void hci_update_scan_enable(void){ 5385 // 2 = page scan, 1 = inq scan 5386 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5387 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5388 hci_run(); 5389 } 5390 5391 void gap_discoverable_control(uint8_t enable){ 5392 if (enable) enable = 1; // normalize argument 5393 5394 if (hci_stack->discoverable == enable){ 5395 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5396 return; 5397 } 5398 5399 hci_stack->discoverable = enable; 5400 hci_update_scan_enable(); 5401 } 5402 5403 void gap_connectable_control(uint8_t enable){ 5404 if (enable) enable = 1; // normalize argument 5405 5406 // don't emit event 5407 if (hci_stack->connectable == enable) return; 5408 5409 hci_stack->connectable = enable; 5410 hci_update_scan_enable(); 5411 } 5412 #endif 5413 5414 void gap_local_bd_addr(bd_addr_t address_buffer){ 5415 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5416 } 5417 5418 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5419 static void hci_host_num_completed_packets(void){ 5420 5421 // create packet manually as arrays are not supported and num_commands should not get reduced 5422 hci_reserve_packet_buffer(); 5423 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5424 5425 uint16_t size = 0; 5426 uint16_t num_handles = 0; 5427 packet[size++] = 0x35; 5428 packet[size++] = 0x0c; 5429 size++; // skip param len 5430 size++; // skip num handles 5431 5432 // add { handle, packets } entries 5433 btstack_linked_item_t * it; 5434 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5435 hci_connection_t * connection = (hci_connection_t *) it; 5436 if (connection->num_packets_completed){ 5437 little_endian_store_16(packet, size, connection->con_handle); 5438 size += 2; 5439 little_endian_store_16(packet, size, connection->num_packets_completed); 5440 size += 2; 5441 // 5442 num_handles++; 5443 connection->num_packets_completed = 0; 5444 } 5445 } 5446 5447 packet[2] = size - 3; 5448 packet[3] = num_handles; 5449 5450 hci_stack->host_completed_packets = 0; 5451 5452 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5453 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5454 5455 // release packet buffer for synchronous transport implementations 5456 if (hci_transport_synchronous()){ 5457 hci_release_packet_buffer(); 5458 hci_emit_transport_packet_sent(); 5459 } 5460 } 5461 #endif 5462 5463 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5464 UNUSED(ds); 5465 hci_stack->substate = HCI_HALTING_CLOSE; 5466 hci_halting_run(); 5467 } 5468 5469 static bool hci_run_acl_fragments(void){ 5470 if (hci_stack->acl_fragmentation_total_size > 0u) { 5471 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5472 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5473 if (connection) { 5474 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5475 hci_send_acl_packet_fragments(connection); 5476 return true; 5477 } 5478 } else { 5479 // connection gone -> discard further fragments 5480 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5481 hci_stack->acl_fragmentation_total_size = 0; 5482 hci_stack->acl_fragmentation_pos = 0; 5483 } 5484 } 5485 return false; 5486 } 5487 5488 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5489 static bool hci_run_iso_fragments(void){ 5490 if (hci_stack->iso_fragmentation_total_size > 0u) { 5491 // TODO: flow control 5492 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5493 hci_send_iso_packet_fragments(); 5494 return true; 5495 } 5496 } 5497 return false; 5498 } 5499 #endif 5500 5501 #ifdef ENABLE_CLASSIC 5502 5503 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5504 static bool hci_classic_operation_active(void) { 5505 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5506 return true; 5507 } 5508 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5509 return true; 5510 } 5511 btstack_linked_item_t * it; 5512 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5513 hci_connection_t *connection = (hci_connection_t *) it; 5514 switch (connection->state) { 5515 case SENT_CREATE_CONNECTION: 5516 case SENT_CANCEL_CONNECTION: 5517 case SENT_DISCONNECT: 5518 return true; 5519 default: 5520 break; 5521 } 5522 } 5523 return false; 5524 } 5525 #endif 5526 5527 static bool hci_run_general_gap_classic(void){ 5528 5529 // assert stack is working and classic is active 5530 if (hci_classic_supported() == false) return false; 5531 if (hci_stack->state != HCI_STATE_WORKING) return false; 5532 5533 // decline incoming connections 5534 if (hci_stack->decline_reason){ 5535 uint8_t reason = hci_stack->decline_reason; 5536 hci_stack->decline_reason = 0; 5537 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5538 return true; 5539 } 5540 5541 if (hci_stack->gap_tasks_classic != 0){ 5542 hci_run_gap_tasks_classic(); 5543 return true; 5544 } 5545 5546 // start/stop inquiry 5547 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5548 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5549 if (hci_classic_operation_active() == false) 5550 #endif 5551 { 5552 uint8_t duration = hci_stack->inquiry_state; 5553 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5554 if (hci_stack->inquiry_max_period_length != 0){ 5555 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); 5556 } else { 5557 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5558 } 5559 return true; 5560 } 5561 } 5562 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5563 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5564 hci_send_cmd(&hci_inquiry_cancel); 5565 return true; 5566 } 5567 5568 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5569 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5570 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5571 return true; 5572 } 5573 5574 // remote name request 5575 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5576 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5577 if (hci_classic_operation_active() == false) 5578 #endif 5579 { 5580 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5581 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5582 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5583 return true; 5584 } 5585 } 5586 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5587 // Local OOB data 5588 if (hci_stack->classic_read_local_oob_data){ 5589 hci_stack->classic_read_local_oob_data = false; 5590 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5591 hci_send_cmd(&hci_read_local_extended_oob_data); 5592 } else { 5593 hci_send_cmd(&hci_read_local_oob_data); 5594 } 5595 } 5596 #endif 5597 // pairing 5598 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5599 uint8_t state = hci_stack->gap_pairing_state; 5600 uint8_t pin_code[16]; 5601 switch (state){ 5602 case GAP_PAIRING_STATE_SEND_PIN: 5603 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5604 memset(pin_code, 0, 16); 5605 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5606 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5607 break; 5608 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5609 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5610 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5611 break; 5612 case GAP_PAIRING_STATE_SEND_PASSKEY: 5613 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5614 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5615 break; 5616 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5617 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5618 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5619 break; 5620 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5621 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5622 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5623 break; 5624 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5625 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5626 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5627 break; 5628 default: 5629 break; 5630 } 5631 return true; 5632 } 5633 return false; 5634 } 5635 #endif 5636 5637 #ifdef ENABLE_BLE 5638 5639 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5640 static uint8_t hci_le_num_phys(uint8_t phys){ 5641 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5642 btstack_assert(phys); 5643 return num_bits_set[phys]; 5644 } 5645 #endif 5646 5647 #ifdef ENABLE_LE_CENTRAL 5648 static void hci_le_scan_stop(void){ 5649 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5650 if (hci_extended_advertising_supported()) { 5651 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5652 } else 5653 #endif 5654 { 5655 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5656 } 5657 } 5658 5659 static void 5660 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5661 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5662 if (hci_extended_advertising_supported()) { 5663 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5664 uint16_t le_connection_scan_interval[3]; 5665 uint16_t le_connection_scan_window[3]; 5666 uint16_t le_connection_interval_min[3]; 5667 uint16_t le_connection_interval_max[3]; 5668 uint16_t le_connection_latency[3]; 5669 uint16_t le_supervision_timeout[3]; 5670 uint16_t le_minimum_ce_length[3]; 5671 uint16_t le_maximum_ce_length[3]; 5672 5673 uint8_t i; 5674 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5675 for (i=0;i<num_phys;i++){ 5676 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5677 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5678 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5679 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5680 le_connection_latency[i] = hci_stack->le_connection_latency; 5681 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5682 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5683 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5684 } 5685 hci_send_cmd(&hci_le_extended_create_connection, 5686 initiator_filter_policy, 5687 hci_stack->le_connection_own_addr_type, // our addr type: 5688 address_type, // peer address type 5689 address, // peer bd addr 5690 hci_stack->le_connection_phys, // initiating PHY 5691 le_connection_scan_interval, // conn scan interval 5692 le_connection_scan_window, // conn scan windows 5693 le_connection_interval_min, // conn interval min 5694 le_connection_interval_max, // conn interval max 5695 le_connection_latency, // conn latency 5696 le_supervision_timeout, // conn latency 5697 le_minimum_ce_length, // min ce length 5698 le_maximum_ce_length // max ce length 5699 ); 5700 } else 5701 #endif 5702 { 5703 hci_send_cmd(&hci_le_create_connection, 5704 hci_stack->le_connection_scan_interval, // conn scan interval 5705 hci_stack->le_connection_scan_window, // conn scan windows 5706 initiator_filter_policy, // don't use whitelist 5707 address_type, // peer address type 5708 address, // peer bd addr 5709 hci_stack->le_connection_own_addr_type, // our addr type: 5710 hci_stack->le_connection_interval_min, // conn interval min 5711 hci_stack->le_connection_interval_max, // conn interval max 5712 hci_stack->le_connection_latency, // conn latency 5713 hci_stack->le_supervision_timeout, // conn latency 5714 hci_stack->le_minimum_ce_length, // min ce length 5715 hci_stack->le_maximum_ce_length // max ce length 5716 ); 5717 } 5718 } 5719 #endif 5720 5721 #ifdef ENABLE_LE_PERIPHERAL 5722 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5723 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5724 uint8_t operation = 0; 5725 if (pos == 0){ 5726 // first fragment or complete data 5727 operation |= 1; 5728 } 5729 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5730 // last fragment or complete data 5731 operation |= 2; 5732 } 5733 return operation; 5734 } 5735 #endif 5736 #endif 5737 5738 static bool hci_run_general_gap_le(void){ 5739 5740 btstack_linked_list_iterator_t lit; 5741 5742 // Phase 1: collect what to stop 5743 5744 #ifdef ENABLE_LE_CENTRAL 5745 bool scanning_stop = false; 5746 bool connecting_stop = false; 5747 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5748 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5749 bool periodic_sync_stop = false; 5750 #endif 5751 #endif 5752 #endif 5753 5754 #ifdef ENABLE_LE_PERIPHERAL 5755 bool advertising_stop = false; 5756 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5757 le_advertising_set_t * advertising_stop_set = NULL; 5758 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5759 bool periodic_advertising_stop = false; 5760 #endif 5761 #endif 5762 #endif 5763 5764 // check if own address changes 5765 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 5766 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 5767 5768 // check if whitelist needs modification 5769 bool whitelist_modification_pending = false; 5770 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5771 while (btstack_linked_list_iterator_has_next(&lit)){ 5772 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5773 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5774 whitelist_modification_pending = true; 5775 break; 5776 } 5777 } 5778 5779 // check if resolving list needs modification 5780 bool resolving_list_modification_pending = false; 5781 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5782 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5783 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5784 resolving_list_modification_pending = true; 5785 } 5786 #endif 5787 5788 #ifdef ENABLE_LE_CENTRAL 5789 5790 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5791 // check if periodic advertiser list needs modification 5792 bool periodic_list_modification_pending = false; 5793 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5794 while (btstack_linked_list_iterator_has_next(&lit)){ 5795 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5796 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5797 periodic_list_modification_pending = true; 5798 break; 5799 } 5800 } 5801 #endif 5802 5803 // scanning control 5804 if (hci_stack->le_scanning_active) { 5805 // stop if: 5806 // - parameter change required 5807 // - it's disabled 5808 // - whitelist change required but used for scanning 5809 // - resolving list modified 5810 // - own address changes 5811 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5812 if ((hci_stack->le_scanning_param_update) || 5813 !hci_stack->le_scanning_enabled || 5814 (scanning_uses_whitelist && whitelist_modification_pending) || 5815 resolving_list_modification_pending || 5816 random_address_change){ 5817 5818 scanning_stop = true; 5819 } 5820 } 5821 5822 // connecting control 5823 bool connecting_with_whitelist; 5824 switch (hci_stack->le_connecting_state){ 5825 case LE_CONNECTING_DIRECT: 5826 case LE_CONNECTING_WHITELIST: 5827 // stop connecting if: 5828 // - connecting uses white and whitelist modification pending 5829 // - if it got disabled 5830 // - resolving list modified 5831 // - own address changes 5832 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5833 if ((connecting_with_whitelist && whitelist_modification_pending) || 5834 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5835 resolving_list_modification_pending || 5836 random_address_change) { 5837 5838 connecting_stop = true; 5839 } 5840 break; 5841 default: 5842 break; 5843 } 5844 5845 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5846 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5847 // periodic sync control 5848 bool sync_with_advertiser_list; 5849 switch(hci_stack->le_periodic_sync_state){ 5850 case LE_CONNECTING_DIRECT: 5851 case LE_CONNECTING_WHITELIST: 5852 // stop sync if: 5853 // - sync with advertiser list and advertiser list modification pending 5854 // - if it got disabled 5855 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5856 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5857 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5858 periodic_sync_stop = true; 5859 } 5860 break; 5861 default: 5862 break; 5863 } 5864 #endif 5865 #endif 5866 5867 #endif /* ENABLE_LE_CENTRAL */ 5868 5869 #ifdef ENABLE_LE_PERIPHERAL 5870 // le advertisement control 5871 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5872 // stop if: 5873 // - parameter change required 5874 // - random address used in advertising and changes 5875 // - it's disabled 5876 // - whitelist change required but used for advertisement filter policy 5877 // - resolving list modified 5878 // - own address changes 5879 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5880 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5881 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5882 if (advertising_change || 5883 (advertising_uses_random_address && random_address_change) || 5884 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5885 (advertising_uses_whitelist && whitelist_modification_pending) || 5886 resolving_list_modification_pending || 5887 random_address_change) { 5888 5889 advertising_stop = true; 5890 } 5891 } 5892 5893 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5894 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5895 btstack_linked_list_iterator_t it; 5896 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5897 while (btstack_linked_list_iterator_has_next(&it)){ 5898 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5899 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5900 // stop if: 5901 // - parameter change required 5902 // - random address used in connectable advertising and changes 5903 // - it's disabled 5904 // - whitelist change required but used for advertisement filter policy 5905 // - resolving list modified 5906 // - own address changes 5907 // - advertisement set will be removed 5908 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5909 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5910 bool advertising_uses_random_address = 5911 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5912 advertising_connectable; 5913 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5914 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5915 bool advertising_set_random_address_change = 5916 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5917 bool advertising_set_will_be_removed = 5918 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5919 if (advertising_parameter_change || 5920 (advertising_uses_random_address && advertising_set_random_address_change) || 5921 (advertising_enabled == false) || 5922 (advertising_uses_whitelist && whitelist_modification_pending) || 5923 resolving_list_modification_pending || 5924 advertising_set_will_be_removed) { 5925 5926 advertising_stop = true; 5927 advertising_stop_set = advertising_set; 5928 break; 5929 } 5930 } 5931 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5932 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5933 // stop if: 5934 // - it's disabled 5935 // - parameter change required 5936 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5937 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5938 if ((periodic_enabled == false) || periodic_parameter_change){ 5939 periodic_advertising_stop = true; 5940 advertising_stop_set = advertising_set; 5941 } 5942 } 5943 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5944 } 5945 } 5946 #endif 5947 5948 #endif 5949 5950 5951 // Phase 2: stop everything that should be off during modifications 5952 5953 5954 // 2.1 Outgoing connection 5955 #ifdef ENABLE_LE_CENTRAL 5956 if (connecting_stop){ 5957 hci_send_cmd(&hci_le_create_connection_cancel); 5958 return true; 5959 } 5960 #endif 5961 5962 // 2.2 Scanning 5963 #ifdef ENABLE_LE_CENTRAL 5964 if (scanning_stop){ 5965 hci_stack->le_scanning_active = false; 5966 hci_le_scan_stop(); 5967 return true; 5968 } 5969 5970 // 2.3 Periodic Sync 5971 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5972 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5973 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5974 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5975 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5976 return true; 5977 } 5978 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5979 if (periodic_sync_stop){ 5980 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5981 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5982 return true; 5983 } 5984 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5985 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5986 #endif /* ENABLE_LE_CENTRAL */ 5987 5988 // 2.4 Advertising: legacy, extended, periodic 5989 #ifdef ENABLE_LE_PERIPHERAL 5990 if (advertising_stop){ 5991 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5992 if (hci_extended_advertising_supported()) { 5993 uint8_t advertising_stop_handle; 5994 if (advertising_stop_set != NULL){ 5995 advertising_stop_handle = advertising_stop_set->advertising_handle; 5996 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5997 } else { 5998 advertising_stop_handle = 0; 5999 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6000 } 6001 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6002 const uint16_t durations[] = { 0 }; 6003 const uint16_t max_events[] = { 0 }; 6004 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6005 } else 6006 #endif 6007 { 6008 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6009 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6010 } 6011 return true; 6012 } 6013 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6014 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6015 if (periodic_advertising_stop){ 6016 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6017 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6018 return true; 6019 } 6020 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6021 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6022 #endif /* ENABLE_LE_PERIPHERAL */ 6023 6024 6025 // Phase 3: modify 6026 6027 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6028 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6029 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6030 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6031 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6032 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6033 #endif 6034 return true; 6035 } 6036 6037 #ifdef ENABLE_LE_CENTRAL 6038 if (hci_stack->le_scanning_param_update){ 6039 hci_stack->le_scanning_param_update = false; 6040 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6041 if (hci_extended_advertising_supported()){ 6042 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6043 uint8_t scan_types[2]; 6044 uint16_t scan_intervals[2]; 6045 uint16_t scan_windows[2]; 6046 6047 uint8_t i; 6048 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6049 for (i=0;i<num_phys;i++){ 6050 scan_types[i] = hci_stack->le_scan_type; 6051 scan_intervals[i] = hci_stack->le_scan_interval; 6052 scan_windows[i] = hci_stack->le_scan_window; 6053 } 6054 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6055 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6056 } else 6057 #endif 6058 { 6059 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6060 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6061 } 6062 return true; 6063 } 6064 #endif 6065 6066 #ifdef ENABLE_LE_PERIPHERAL 6067 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6068 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6069 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6070 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6071 if (hci_extended_advertising_supported()){ 6072 // map advertisment type to advertising event properties 6073 uint16_t adv_event_properties = 0; 6074 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6075 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6076 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6077 } 6078 hci_stack->le_advertising_set_in_current_command = 0; 6079 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6080 0, 6081 adv_event_properties, 6082 hci_stack->le_advertisements_interval_min, 6083 hci_stack->le_advertisements_interval_max, 6084 hci_stack->le_advertisements_channel_map, 6085 hci_stack->le_advertisements_own_addr_type, 6086 hci_stack->le_advertisements_direct_address_type, 6087 hci_stack->le_advertisements_direct_address, 6088 hci_stack->le_advertisements_filter_policy, 6089 0x7f, // tx power: no preference 6090 0x01, // primary adv phy: LE 1M 6091 0, // secondary adv max skip 6092 0, // secondary adv phy 6093 0, // adv sid 6094 0 // scan request notification 6095 ); 6096 } else 6097 #endif 6098 { 6099 hci_send_cmd(&hci_le_set_advertising_parameters, 6100 hci_stack->le_advertisements_interval_min, 6101 hci_stack->le_advertisements_interval_max, 6102 hci_stack->le_advertisements_type, 6103 hci_stack->le_advertisements_own_addr_type, 6104 hci_stack->le_advertisements_direct_address_type, 6105 hci_stack->le_advertisements_direct_address, 6106 hci_stack->le_advertisements_channel_map, 6107 hci_stack->le_advertisements_filter_policy); 6108 } 6109 return true; 6110 } 6111 6112 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6113 // assumption: only set if extended advertising is supported 6114 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6115 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6116 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6117 return true; 6118 } 6119 #endif 6120 6121 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6122 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6123 uint8_t adv_data_clean[31]; 6124 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6125 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6126 hci_stack->le_advertisements_data_len); 6127 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6128 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6129 if (hci_extended_advertising_supported()){ 6130 hci_stack->le_advertising_set_in_current_command = 0; 6131 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6132 } else 6133 #endif 6134 { 6135 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6136 } 6137 return true; 6138 } 6139 6140 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6141 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6142 uint8_t scan_data_clean[31]; 6143 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6144 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6145 hci_stack->le_scan_response_data_len); 6146 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6147 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6148 if (hci_extended_advertising_supported()){ 6149 hci_stack->le_advertising_set_in_current_command = 0; 6150 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6151 } else 6152 #endif 6153 { 6154 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6155 } 6156 return true; 6157 } 6158 6159 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6160 if (hci_extended_advertising_supported()) { 6161 btstack_linked_list_iterator_t it; 6162 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6163 while (btstack_linked_list_iterator_has_next(&it)){ 6164 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6165 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6166 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6167 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6168 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6169 return true; 6170 } 6171 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6172 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6173 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6174 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6175 advertising_set->advertising_handle, 6176 advertising_set->extended_params.advertising_event_properties, 6177 advertising_set->extended_params.primary_advertising_interval_min, 6178 advertising_set->extended_params.primary_advertising_interval_max, 6179 advertising_set->extended_params.primary_advertising_channel_map, 6180 advertising_set->extended_params.own_address_type, 6181 advertising_set->extended_params.peer_address_type, 6182 advertising_set->extended_params.peer_address, 6183 advertising_set->extended_params.advertising_filter_policy, 6184 advertising_set->extended_params.advertising_tx_power, 6185 advertising_set->extended_params.primary_advertising_phy, 6186 advertising_set->extended_params.secondary_advertising_max_skip, 6187 advertising_set->extended_params.secondary_advertising_phy, 6188 advertising_set->extended_params.advertising_sid, 6189 advertising_set->extended_params.scan_request_notification_enable 6190 ); 6191 return true; 6192 } 6193 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6194 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6195 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6196 return true; 6197 } 6198 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6199 uint16_t pos = advertising_set->adv_data_pos; 6200 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6201 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6202 if ((operation & 0x02) != 0){ 6203 // last fragment or complete data 6204 operation |= 2; 6205 advertising_set->adv_data_pos = 0; 6206 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6207 } else { 6208 advertising_set->adv_data_pos += data_to_upload; 6209 } 6210 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6211 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6212 return true; 6213 } 6214 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6215 uint16_t pos = advertising_set->scan_data_pos; 6216 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6217 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6218 if ((operation & 0x02) != 0){ 6219 advertising_set->scan_data_pos = 0; 6220 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6221 } else { 6222 advertising_set->scan_data_pos += data_to_upload; 6223 } 6224 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6225 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6226 return true; 6227 } 6228 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6229 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6230 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6231 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6232 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6233 advertising_set->advertising_handle, 6234 advertising_set->periodic_params.periodic_advertising_interval_min, 6235 advertising_set->periodic_params.periodic_advertising_interval_max, 6236 advertising_set->periodic_params.periodic_advertising_properties); 6237 return true; 6238 } 6239 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6240 uint16_t pos = advertising_set->periodic_data_pos; 6241 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6242 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6243 if ((operation & 0x02) != 0){ 6244 // last fragment or complete data 6245 operation |= 2; 6246 advertising_set->periodic_data_pos = 0; 6247 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6248 } else { 6249 advertising_set->periodic_data_pos += data_to_upload; 6250 } 6251 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6252 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6253 return true; 6254 } 6255 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6256 } 6257 } 6258 #endif 6259 6260 #endif 6261 6262 #ifdef ENABLE_LE_CENTRAL 6263 // if connect with whitelist was active and is not cancelled yet, wait until next time 6264 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6265 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6266 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6267 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6268 #endif 6269 #endif 6270 6271 // LE Whitelist Management 6272 if (whitelist_modification_pending){ 6273 // add/remove entries 6274 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6275 while (btstack_linked_list_iterator_has_next(&lit)){ 6276 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6277 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6278 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6279 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 6280 return true; 6281 } 6282 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6283 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6284 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6285 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6286 return true; 6287 } 6288 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 6289 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6290 btstack_memory_whitelist_entry_free(entry); 6291 } 6292 } 6293 } 6294 6295 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6296 // LE Resolving List Management 6297 if (resolving_list_supported) { 6298 uint16_t i; 6299 switch (hci_stack->le_resolving_list_state) { 6300 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6301 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6302 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6303 return true; 6304 case LE_RESOLVING_LIST_READ_SIZE: 6305 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6306 hci_send_cmd(&hci_le_read_resolving_list_size); 6307 return true; 6308 case LE_RESOLVING_LIST_SEND_CLEAR: 6309 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6310 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6311 sizeof(hci_stack->le_resolving_list_add_entries)); 6312 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6313 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6314 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6315 sizeof(hci_stack->le_resolving_list_remove_entries)); 6316 hci_send_cmd(&hci_le_clear_resolving_list); 6317 return true; 6318 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6319 // first remove old entries 6320 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6321 uint8_t offset = i >> 3; 6322 uint8_t mask = 1 << (i & 7); 6323 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6324 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6325 bd_addr_t peer_identity_addreses; 6326 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6327 sm_key_t peer_irk; 6328 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6329 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6330 6331 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6332 // trigger whitelist entry 'update' (work around for controller bug) 6333 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6334 while (btstack_linked_list_iterator_has_next(&lit)) { 6335 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6336 if (entry->address_type != peer_identity_addr_type) continue; 6337 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6338 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6339 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6340 } 6341 #endif 6342 6343 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6344 peer_identity_addreses); 6345 return true; 6346 } 6347 6348 // then add new entries 6349 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6350 uint8_t offset = i >> 3; 6351 uint8_t mask = 1 << (i & 7); 6352 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6353 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6354 bd_addr_t peer_identity_addreses; 6355 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6356 sm_key_t peer_irk; 6357 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6358 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6359 if (btstack_is_null(peer_irk, 16)) continue; 6360 const uint8_t *local_irk = gap_get_persistent_irk(); 6361 // command uses format specifier 'P' that stores 16-byte value without flip 6362 uint8_t local_irk_flipped[16]; 6363 uint8_t peer_irk_flipped[16]; 6364 reverse_128(local_irk, local_irk_flipped); 6365 reverse_128(peer_irk, peer_irk_flipped); 6366 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6367 peer_irk_flipped, local_irk_flipped); 6368 return true; 6369 } 6370 6371 // finally, set privacy mode 6372 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6373 uint8_t offset = i >> 3; 6374 uint8_t mask = 1 << (i & 7); 6375 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6376 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6377 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6378 // Network Privacy Mode is default 6379 continue; 6380 } 6381 bd_addr_t peer_identity_address; 6382 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6383 sm_key_t peer_irk; 6384 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6385 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6386 if (btstack_is_null(peer_irk, 16)) continue; 6387 // command uses format specifier 'P' that stores 16-byte value without flip 6388 uint8_t peer_irk_flipped[16]; 6389 reverse_128(peer_irk, peer_irk_flipped); 6390 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6391 return true; 6392 } 6393 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6394 break; 6395 6396 default: 6397 break; 6398 } 6399 } 6400 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6401 #endif 6402 6403 #ifdef ENABLE_LE_CENTRAL 6404 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6405 // LE Whitelist Management 6406 if (periodic_list_modification_pending){ 6407 // add/remove entries 6408 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6409 while (btstack_linked_list_iterator_has_next(&lit)){ 6410 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6411 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6412 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6413 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6414 return true; 6415 } 6416 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6417 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6418 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6419 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6420 return true; 6421 } 6422 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6423 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6424 btstack_memory_periodic_advertiser_list_entry_free(entry); 6425 } 6426 } 6427 } 6428 #endif 6429 #endif 6430 6431 #ifdef ENABLE_LE_CENTRAL 6432 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6433 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6434 if (hci_stack->le_past_set_default_params){ 6435 hci_stack->le_past_set_default_params = false; 6436 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6437 hci_stack->le_past_mode, 6438 hci_stack->le_past_skip, 6439 hci_stack->le_past_sync_timeout, 6440 hci_stack->le_past_cte_type); 6441 return true; 6442 } 6443 #endif 6444 #endif 6445 #endif 6446 6447 // post-pone all actions until stack is fully working 6448 if (hci_stack->state != HCI_STATE_WORKING) return false; 6449 6450 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6451 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6452 6453 // Phase 4: restore state 6454 6455 #ifdef ENABLE_LE_CENTRAL 6456 // re-start scanning 6457 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6458 hci_stack->le_scanning_active = true; 6459 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6460 if (hci_extended_advertising_supported()){ 6461 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6462 } else 6463 #endif 6464 { 6465 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6466 } 6467 return true; 6468 } 6469 #endif 6470 6471 #ifdef ENABLE_LE_CENTRAL 6472 // re-start connecting 6473 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6474 bd_addr_t null_addr; 6475 memset(null_addr, 0, 6); 6476 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6477 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6478 hci_send_le_create_connection(1, 0, null_addr); 6479 return true; 6480 } 6481 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6482 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6483 switch(hci_stack->le_periodic_sync_request){ 6484 case LE_CONNECTING_DIRECT: 6485 case LE_CONNECTING_WHITELIST: 6486 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6487 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6488 hci_stack->le_periodic_sync_options, 6489 hci_stack->le_periodic_sync_advertising_sid, 6490 hci_stack->le_periodic_sync_advertiser_address_type, 6491 hci_stack->le_periodic_sync_advertiser_address, 6492 hci_stack->le_periodic_sync_skip, 6493 hci_stack->le_periodic_sync_timeout, 6494 hci_stack->le_periodic_sync_cte_type); 6495 return true; 6496 default: 6497 break; 6498 } 6499 } 6500 #endif 6501 #endif 6502 6503 #ifdef ENABLE_LE_PERIPHERAL 6504 // re-start advertising 6505 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6506 // check if advertisements should be enabled given 6507 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6508 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6509 6510 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6511 if (hci_extended_advertising_supported()){ 6512 const uint8_t advertising_handles[] = { 0 }; 6513 const uint16_t durations[] = { 0 }; 6514 const uint16_t max_events[] = { 0 }; 6515 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6516 } else 6517 #endif 6518 { 6519 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6520 } 6521 return true; 6522 } 6523 6524 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6525 if (hci_extended_advertising_supported()) { 6526 btstack_linked_list_iterator_t it; 6527 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6528 while (btstack_linked_list_iterator_has_next(&it)) { 6529 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6530 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6531 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6532 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6533 const uint16_t durations[] = { advertising_set->enable_timeout }; 6534 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6535 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6536 return true; 6537 } 6538 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6539 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6540 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6541 uint8_t enable = 1; 6542 if (advertising_set->periodic_include_adi){ 6543 enable |= 2; 6544 } 6545 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6546 return true; 6547 } 6548 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6549 } 6550 } 6551 #endif 6552 #endif 6553 6554 return false; 6555 } 6556 6557 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6558 static bool hci_run_iso_tasks(void){ 6559 btstack_linked_list_iterator_t it; 6560 6561 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6562 return false; 6563 } 6564 6565 // BIG 6566 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6567 while (btstack_linked_list_iterator_has_next(&it)){ 6568 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6569 switch (big->state){ 6570 case LE_AUDIO_BIG_STATE_CREATE: 6571 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6572 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6573 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6574 hci_send_cmd(&hci_le_create_big, 6575 big->params->big_handle, 6576 big->params->advertising_handle, 6577 big->params->num_bis, 6578 big->params->sdu_interval_us, 6579 big->params->max_sdu, 6580 big->params->max_transport_latency_ms, 6581 big->params->rtn, 6582 big->params->phy, 6583 big->params->packing, 6584 big->params->framing, 6585 big->params->encryption, 6586 big->params->broadcast_code); 6587 return true; 6588 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6589 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6590 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); 6591 return true; 6592 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6593 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6594 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6595 return true; 6596 case LE_AUDIO_BIG_STATE_TERMINATE: 6597 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6598 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6599 return true; 6600 default: 6601 break; 6602 } 6603 } 6604 6605 // BIG Sync 6606 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6607 while (btstack_linked_list_iterator_has_next(&it)){ 6608 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6609 switch (big_sync->state){ 6610 case LE_AUDIO_BIG_STATE_CREATE: 6611 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6612 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6613 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6614 hci_send_cmd(&hci_le_big_create_sync, 6615 big_sync->params->big_handle, 6616 big_sync->params->sync_handle, 6617 big_sync->params->encryption, 6618 big_sync->params->broadcast_code, 6619 big_sync->params->mse, 6620 big_sync->params->big_sync_timeout_10ms, 6621 big_sync->params->num_bis, 6622 big_sync->params->bis_indices); 6623 return true; 6624 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6625 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6626 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); 6627 return true; 6628 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6629 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6630 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6631 return true; 6632 case LE_AUDIO_BIG_STATE_TERMINATE: 6633 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6634 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6635 return true; 6636 default: 6637 break; 6638 } 6639 } 6640 6641 // CIG 6642 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6643 while (btstack_linked_list_iterator_has_next(&it)) { 6644 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6645 uint8_t i; 6646 // Set CIG Parameters 6647 uint8_t cis_id[MAX_NR_CIS]; 6648 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6649 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6650 uint8_t phy_c_to_p[MAX_NR_CIS]; 6651 uint8_t phy_p_to_c[MAX_NR_CIS]; 6652 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6653 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6654 switch (cig->state) { 6655 case LE_AUDIO_CIG_STATE_CREATE: 6656 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6657 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6658 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6659 le_audio_cig_params_t * params = cig->params; 6660 for (i = 0; i < params->num_cis; i++) { 6661 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6662 cis_id[i] = cis_params->cis_id; 6663 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6664 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6665 phy_c_to_p[i] = cis_params->phy_c_to_p; 6666 phy_p_to_c[i] = cis_params->phy_p_to_c; 6667 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6668 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6669 } 6670 hci_send_cmd(&hci_le_set_cig_parameters, 6671 cig->cig_id, 6672 params->sdu_interval_c_to_p, 6673 params->sdu_interval_p_to_c, 6674 params->worst_case_sca, 6675 params->packing, 6676 params->framing, 6677 params->max_transport_latency_c_to_p, 6678 params->max_transport_latency_p_to_c, 6679 params->num_cis, 6680 cis_id, 6681 max_sdu_c_to_p, 6682 max_sdu_p_to_c, 6683 phy_c_to_p, 6684 phy_p_to_c, 6685 rtn_c_to_p, 6686 rtn_p_to_c 6687 ); 6688 return true; 6689 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6690 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6691 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6692 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6693 for (i=0;i<cig->num_cis;i++){ 6694 cig->cis_setup_active[i] = true; 6695 } 6696 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6697 return true; 6698 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6699 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6700 // find next path to setup 6701 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6702 if (cig->cis_established[cis_index] == false) { 6703 continue; 6704 } 6705 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6706 bool setup = true; 6707 if (cis_direction == 0){ 6708 // 0 - input - host to controller 6709 // we are central => central to peripheral 6710 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6711 } else { 6712 // 1 - output - controller to host 6713 // we are central => peripheral to central 6714 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6715 } 6716 if (setup){ 6717 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6718 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6719 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6720 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, 0, 0, 0, 0, 0, NULL); 6721 return true; 6722 } 6723 cig->state_vars.next_cis++; 6724 } 6725 // emit done 6726 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6727 default: 6728 break; 6729 } 6730 } 6731 6732 // CIS Accept/Reject 6733 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6734 while (btstack_linked_list_iterator_has_next(&it)) { 6735 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6736 hci_con_handle_t con_handle; 6737 switch (iso_stream->state){ 6738 case HCI_ISO_STREAM_W2_ACCEPT: 6739 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6740 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6741 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6742 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 6743 return true; 6744 case HCI_ISO_STREAM_W2_REJECT: 6745 con_handle = iso_stream->cis_handle; 6746 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6747 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6748 hci_iso_stream_finalize(iso_stream); 6749 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6750 return true; 6751 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6752 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6753 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6754 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6755 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 0, 0, 0, 0, 0, 0, 0, NULL); 6756 break; 6757 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6758 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6759 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6760 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6761 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 1, 0, 0, 0, 0, 0, 0, NULL); 6762 break; 6763 default: 6764 break; 6765 } 6766 } 6767 6768 return false; 6769 } 6770 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6771 #endif 6772 6773 static bool hci_run_general_pending_commands(void){ 6774 btstack_linked_item_t * it; 6775 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6776 hci_connection_t * connection = (hci_connection_t *) it; 6777 6778 switch(connection->state){ 6779 case SEND_CREATE_CONNECTION: 6780 switch(connection->address_type){ 6781 #ifdef ENABLE_CLASSIC 6782 case BD_ADDR_TYPE_ACL: 6783 log_info("sending hci_create_connection"); 6784 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6785 break; 6786 #endif 6787 default: 6788 #ifdef ENABLE_BLE 6789 #ifdef ENABLE_LE_CENTRAL 6790 log_info("sending hci_le_create_connection"); 6791 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6792 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6793 hci_send_le_create_connection(0, connection->address_type, connection->address); 6794 connection->state = SENT_CREATE_CONNECTION; 6795 #endif 6796 #endif 6797 break; 6798 } 6799 return true; 6800 6801 #ifdef ENABLE_CLASSIC 6802 case RECEIVED_CONNECTION_REQUEST: 6803 connection->role = HCI_ROLE_SLAVE; 6804 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6805 log_info("sending hci_accept_connection_request"); 6806 connection->state = ACCEPTED_CONNECTION_REQUEST; 6807 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6808 return true; 6809 } 6810 break; 6811 #endif 6812 case SEND_DISCONNECT: 6813 connection->state = SENT_DISCONNECT; 6814 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6815 return true; 6816 6817 default: 6818 break; 6819 } 6820 6821 // no further commands if connection is about to get shut down 6822 if (connection->state == SENT_DISCONNECT) continue; 6823 6824 #ifdef ENABLE_CLASSIC 6825 6826 // Handling link key request requires remote supported features 6827 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6828 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6829 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6830 6831 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6832 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6833 if (have_link_key && security_level_sufficient){ 6834 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6835 } else { 6836 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6837 } 6838 return true; 6839 } 6840 6841 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6842 log_info("denying to pin request"); 6843 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6844 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6845 return true; 6846 } 6847 6848 // security assessment requires remote features 6849 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6850 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6851 hci_ssp_assess_security_on_io_cap_request(connection); 6852 // 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 6853 } 6854 6855 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6856 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6857 // set authentication requirements: 6858 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6859 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6860 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6861 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6862 authreq |= 1; 6863 } 6864 bool bonding = hci_stack->bondable; 6865 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6866 // if we have received IO Cap Response, we're in responder role 6867 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6868 if (bonding && !remote_bonding){ 6869 log_info("Remote not bonding, dropping local flag"); 6870 bonding = false; 6871 } 6872 } 6873 if (bonding){ 6874 if (connection->bonding_flags & BONDING_DEDICATED){ 6875 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6876 } else { 6877 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6878 } 6879 } 6880 uint8_t have_oob_data = 0; 6881 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6882 if (connection->classic_oob_c_192 != NULL){ 6883 have_oob_data |= 1; 6884 } 6885 if (connection->classic_oob_c_256 != NULL){ 6886 have_oob_data |= 2; 6887 } 6888 #endif 6889 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6890 return true; 6891 } 6892 6893 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6894 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6895 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6896 return true; 6897 } 6898 6899 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6900 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6901 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6902 const uint8_t zero[16] = { 0 }; 6903 const uint8_t * r_192 = zero; 6904 const uint8_t * c_192 = zero; 6905 const uint8_t * r_256 = zero; 6906 const uint8_t * c_256 = zero; 6907 // verify P-256 OOB 6908 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6909 c_256 = connection->classic_oob_c_256; 6910 if (connection->classic_oob_r_256 != NULL) { 6911 r_256 = connection->classic_oob_r_256; 6912 } 6913 } 6914 // verify P-192 OOB 6915 if ((connection->classic_oob_c_192 != NULL)) { 6916 c_192 = connection->classic_oob_c_192; 6917 if (connection->classic_oob_r_192 != NULL) { 6918 r_192 = connection->classic_oob_r_192; 6919 } 6920 } 6921 6922 // assess security 6923 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6924 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6925 if (need_level_4 && !can_reach_level_4){ 6926 log_info("Level 4 required, but not possible -> abort"); 6927 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6928 // send oob negative reply 6929 c_256 = NULL; 6930 c_192 = NULL; 6931 } 6932 6933 // Reply 6934 if (c_256 != zero) { 6935 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6936 } else if (c_192 != zero){ 6937 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6938 } else { 6939 hci_stack->classic_oob_con_handle = connection->con_handle; 6940 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6941 } 6942 return true; 6943 } 6944 #endif 6945 6946 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6947 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6948 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6949 return true; 6950 } 6951 6952 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6953 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6954 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6955 return true; 6956 } 6957 6958 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6959 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6960 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6961 return true; 6962 } 6963 6964 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6965 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6966 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6967 connection->state = SENT_DISCONNECT; 6968 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6969 return true; 6970 } 6971 6972 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6973 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6974 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6975 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6976 return true; 6977 } 6978 6979 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6980 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6981 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6982 return true; 6983 } 6984 6985 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 6986 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 6987 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 6988 return true; 6989 } 6990 6991 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 6992 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6993 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 6994 return true; 6995 } 6996 6997 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 6998 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 6999 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7000 return true; 7001 } 7002 7003 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7004 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7005 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7006 return true; 7007 } 7008 #endif 7009 7010 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7011 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7012 #ifdef ENABLE_CLASSIC 7013 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7014 #endif 7015 if (connection->state != SENT_DISCONNECT){ 7016 connection->state = SENT_DISCONNECT; 7017 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7018 return true; 7019 } 7020 } 7021 7022 #ifdef ENABLE_CLASSIC 7023 uint16_t sniff_min_interval; 7024 switch (connection->sniff_min_interval){ 7025 case 0: 7026 break; 7027 case 0xffff: 7028 connection->sniff_min_interval = 0; 7029 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7030 return true; 7031 default: 7032 sniff_min_interval = connection->sniff_min_interval; 7033 connection->sniff_min_interval = 0; 7034 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7035 return true; 7036 } 7037 7038 if (connection->sniff_subrating_max_latency != 0xffff){ 7039 uint16_t max_latency = connection->sniff_subrating_max_latency; 7040 connection->sniff_subrating_max_latency = 0; 7041 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7042 return true; 7043 } 7044 7045 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7046 uint8_t service_type = (uint8_t) connection->qos_service_type; 7047 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7048 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); 7049 return true; 7050 } 7051 7052 if (connection->request_role != HCI_ROLE_INVALID){ 7053 hci_role_t role = connection->request_role; 7054 connection->request_role = HCI_ROLE_INVALID; 7055 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7056 return true; 7057 } 7058 #endif 7059 7060 if (connection->gap_connection_tasks != 0){ 7061 #ifdef ENABLE_CLASSIC 7062 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7063 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7064 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7065 return true; 7066 } 7067 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7068 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7069 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7070 return true; 7071 } 7072 #endif 7073 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7074 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7075 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7076 return true; 7077 } 7078 #ifdef ENABLE_BLE 7079 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7080 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7081 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7082 return true; 7083 } 7084 #endif 7085 } 7086 7087 #ifdef ENABLE_BLE 7088 switch (connection->le_con_parameter_update_state){ 7089 // response to L2CAP CON PARAMETER UPDATE REQUEST 7090 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7091 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7092 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7093 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7094 0x0000, 0xffff); 7095 return true; 7096 case CON_PARAMETER_UPDATE_REPLY: 7097 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7098 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7099 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7100 0x0000, 0xffff); 7101 return true; 7102 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7103 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7104 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7105 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7106 return true; 7107 default: 7108 break; 7109 } 7110 if (connection->le_phy_update_all_phys != 0xffu){ 7111 uint8_t all_phys = connection->le_phy_update_all_phys; 7112 connection->le_phy_update_all_phys = 0xff; 7113 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); 7114 return true; 7115 } 7116 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7117 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7118 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7119 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7120 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7121 return true; 7122 } 7123 #endif 7124 #endif 7125 } 7126 return false; 7127 } 7128 7129 static void hci_run(void){ 7130 7131 // stack state sub statemachines 7132 switch (hci_stack->state) { 7133 case HCI_STATE_INITIALIZING: 7134 hci_initializing_run(); 7135 break; 7136 case HCI_STATE_HALTING: 7137 hci_halting_run(); 7138 break; 7139 case HCI_STATE_FALLING_ASLEEP: 7140 hci_falling_asleep_run(); 7141 break; 7142 default: 7143 break; 7144 } 7145 7146 // allow to run after initialization to working transition 7147 if (hci_stack->state != HCI_STATE_WORKING){ 7148 return; 7149 } 7150 7151 bool done; 7152 7153 // send continuation fragments first, as they block the prepared packet buffer 7154 done = hci_run_acl_fragments(); 7155 if (done) return; 7156 7157 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7158 done = hci_run_iso_fragments(); 7159 if (done) return; 7160 #endif 7161 7162 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7163 // send host num completed packets next as they don't require num_cmd_packets > 0 7164 if (!hci_can_send_comand_packet_transport()) return; 7165 if (hci_stack->host_completed_packets){ 7166 hci_host_num_completed_packets(); 7167 return; 7168 } 7169 #endif 7170 7171 if (!hci_can_send_command_packet_now()) return; 7172 7173 // global/non-connection oriented commands 7174 7175 7176 #ifdef ENABLE_CLASSIC 7177 // general gap classic 7178 done = hci_run_general_gap_classic(); 7179 if (done) return; 7180 #endif 7181 7182 #ifdef ENABLE_BLE 7183 // general gap le 7184 done = hci_run_general_gap_le(); 7185 if (done) return; 7186 7187 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7188 // ISO related tasks, e.g. BIG create/terminate/sync 7189 done = hci_run_iso_tasks(); 7190 if (done) return; 7191 #endif 7192 #endif 7193 7194 // send pending HCI commands 7195 hci_run_general_pending_commands(); 7196 } 7197 7198 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7199 // house-keeping 7200 7201 #ifdef ENABLE_CLASSIC 7202 bd_addr_t addr; 7203 hci_connection_t * conn; 7204 #endif 7205 #ifdef ENABLE_LE_CENTRAL 7206 uint8_t initiator_filter_policy; 7207 #endif 7208 7209 uint16_t opcode = little_endian_read_16(packet, 0); 7210 switch (opcode) { 7211 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7212 hci_stack->loopback_mode = packet[3]; 7213 break; 7214 7215 #ifdef ENABLE_CLASSIC 7216 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7217 reverse_bd_addr(&packet[3], addr); 7218 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7219 7220 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7221 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7222 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7223 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7224 } 7225 7226 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7227 if (!conn) { 7228 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7229 if (!conn) { 7230 // notify client that alloc failed 7231 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7232 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7233 } 7234 conn->state = SEND_CREATE_CONNECTION; 7235 conn->role = HCI_ROLE_MASTER; 7236 } 7237 7238 log_info("conn state %u", conn->state); 7239 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7240 switch (conn->state) { 7241 // if connection active exists 7242 case OPEN: 7243 // and OPEN, emit connection complete command 7244 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7245 // packet not sent to controller 7246 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7247 case RECEIVED_DISCONNECTION_COMPLETE: 7248 // create connection triggered in disconnect complete event, let's do it now 7249 break; 7250 case SEND_CREATE_CONNECTION: 7251 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7252 if (hci_classic_operation_active()){ 7253 return ERROR_CODE_SUCCESS; 7254 } 7255 #endif 7256 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7257 break; 7258 default: 7259 // otherwise, just ignore as it is already in the open process 7260 // packet not sent to controller 7261 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7262 } 7263 conn->state = SENT_CREATE_CONNECTION; 7264 7265 // track outgoing connection 7266 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7267 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7268 break; 7269 7270 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 7271 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7272 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7273 if (conn == NULL) { 7274 // neither SCO nor ACL connection for con handle 7275 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7276 } else { 7277 switch (conn->address_type){ 7278 case BD_ADDR_TYPE_ACL: 7279 // assert SCO connection does not exit 7280 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7281 return ERROR_CODE_COMMAND_DISALLOWED; 7282 } 7283 // allocate connection struct 7284 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO); 7285 if (!conn) { 7286 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7287 } 7288 conn->role = HCI_ROLE_MASTER; 7289 break; 7290 case BD_ADDR_TYPE_SCO: 7291 // update of existing SCO connection 7292 break; 7293 default: 7294 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7295 } 7296 } 7297 7298 // conn refers to hci connection of type sco now 7299 7300 conn->state = SENT_CREATE_CONNECTION; 7301 7302 // track outgoing connection to handle command status with error 7303 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7304 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7305 7306 // setup_synchronous_connection? Voice setting at offset 22 7307 // TODO: compare to current setting if sco connection already active 7308 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7309 break; 7310 7311 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7312 // get SCO connection 7313 reverse_bd_addr(&packet[3], addr); 7314 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7315 if (conn == NULL){ 7316 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7317 } 7318 7319 conn->state = ACCEPTED_CONNECTION_REQUEST; 7320 7321 // track outgoing connection to handle command status with error 7322 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7323 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7324 7325 // accept_synchronous_connection? Voice setting at offset 18 7326 // TODO: compare to current setting if sco connection already active 7327 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7328 break; 7329 #endif 7330 #endif 7331 7332 #ifdef ENABLE_BLE 7333 #ifdef ENABLE_LE_CENTRAL 7334 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7335 // white list used? 7336 initiator_filter_policy = packet[7]; 7337 switch (initiator_filter_policy) { 7338 case 0: 7339 // whitelist not used 7340 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7341 break; 7342 case 1: 7343 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7344 break; 7345 default: 7346 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7347 break; 7348 } 7349 // track outgoing connection 7350 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7351 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7352 break; 7353 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7354 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7355 // white list used? 7356 initiator_filter_policy = packet[3]; 7357 switch (initiator_filter_policy) { 7358 case 0: 7359 // whitelist not used 7360 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7361 break; 7362 case 1: 7363 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7364 break; 7365 default: 7366 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7367 break; 7368 } 7369 // track outgoing connection 7370 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7371 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7372 break; 7373 #endif 7374 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7375 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7376 break; 7377 #endif 7378 #endif /* ENABLE_BLE */ 7379 default: 7380 break; 7381 } 7382 7383 hci_stack->num_cmd_packets--; 7384 7385 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7386 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7387 if (err != 0){ 7388 return ERROR_CODE_HARDWARE_FAILURE; 7389 } 7390 return ERROR_CODE_SUCCESS; 7391 } 7392 7393 // disconnect because of security block 7394 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7395 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7396 if (!connection) return; 7397 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7398 } 7399 7400 7401 // Configure Secure Simple Pairing 7402 7403 #ifdef ENABLE_CLASSIC 7404 7405 // enable will enable SSP during init 7406 void gap_ssp_set_enable(int enable){ 7407 hci_stack->ssp_enable = enable; 7408 } 7409 7410 static int hci_local_ssp_activated(void){ 7411 return gap_ssp_supported() && hci_stack->ssp_enable; 7412 } 7413 7414 // if set, BTstack will respond to io capability request using authentication requirement 7415 void gap_ssp_set_io_capability(int io_capability){ 7416 hci_stack->ssp_io_capability = io_capability; 7417 } 7418 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7419 hci_stack->ssp_authentication_requirement = authentication_requirement; 7420 } 7421 7422 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7423 void gap_ssp_set_auto_accept(int auto_accept){ 7424 hci_stack->ssp_auto_accept = auto_accept; 7425 } 7426 7427 void gap_secure_connections_enable(bool enable){ 7428 hci_stack->secure_connections_enable = enable; 7429 } 7430 bool gap_secure_connections_active(void){ 7431 return hci_stack->secure_connections_active; 7432 } 7433 7434 #endif 7435 7436 // va_list part of hci_send_cmd 7437 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7438 if (!hci_can_send_command_packet_now()){ 7439 log_error("hci_send_cmd called but cannot send packet now"); 7440 return ERROR_CODE_COMMAND_DISALLOWED; 7441 } 7442 7443 // for HCI INITIALIZATION 7444 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7445 hci_stack->last_cmd_opcode = cmd->opcode; 7446 7447 hci_reserve_packet_buffer(); 7448 uint8_t * packet = hci_stack->hci_packet_buffer; 7449 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7450 uint8_t status = hci_send_cmd_packet(packet, size); 7451 7452 // release packet buffer on error or for synchronous transport implementations 7453 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7454 hci_release_packet_buffer(); 7455 hci_emit_transport_packet_sent(); 7456 } 7457 7458 return status; 7459 } 7460 7461 /** 7462 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7463 */ 7464 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7465 va_list argptr; 7466 va_start(argptr, cmd); 7467 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7468 va_end(argptr); 7469 return status; 7470 } 7471 7472 // Create various non-HCI events. 7473 // TODO: generalize, use table similar to hci_create_command 7474 7475 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7476 // dump packet 7477 if (dump) { 7478 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7479 } 7480 7481 // dispatch to all event handlers 7482 btstack_linked_list_iterator_t it; 7483 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7484 while (btstack_linked_list_iterator_has_next(&it)){ 7485 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7486 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7487 } 7488 } 7489 7490 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7491 if (!hci_stack->acl_packet_handler) return; 7492 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7493 } 7494 7495 #ifdef ENABLE_CLASSIC 7496 static void hci_notify_if_sco_can_send_now(void){ 7497 // notify SCO sender if waiting 7498 if (!hci_stack->sco_waiting_for_can_send_now) return; 7499 if (hci_can_send_sco_packet_now()){ 7500 hci_stack->sco_waiting_for_can_send_now = 0; 7501 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7502 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7503 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7504 } 7505 } 7506 7507 // parsing end emitting has been merged to reduce code size 7508 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7509 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7510 7511 uint8_t * eir_data; 7512 ad_context_t context; 7513 const uint8_t * name; 7514 uint8_t name_len; 7515 7516 if (size < 3) return; 7517 7518 int event_type = hci_event_packet_get_type(packet); 7519 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7520 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7521 7522 switch (event_type){ 7523 case HCI_EVENT_INQUIRY_RESULT: 7524 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7525 if (size != (3 + (num_responses * 14))) return; 7526 break; 7527 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7528 if (size != 257) return; 7529 if (num_responses != 1) return; 7530 break; 7531 default: 7532 return; 7533 } 7534 7535 // event[1] is set at the end 7536 int i; 7537 for (i=0; i<num_responses;i++){ 7538 memset(event, 0, sizeof(event)); 7539 event[0] = GAP_EVENT_INQUIRY_RESULT; 7540 uint8_t event_size = 27; // if name is not set by EIR 7541 7542 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7543 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7544 (void)memcpy(&event[9], 7545 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7546 3); // class of device 7547 (void)memcpy(&event[12], 7548 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7549 2); // clock offset 7550 7551 switch (event_type){ 7552 case HCI_EVENT_INQUIRY_RESULT: 7553 // 14,15,16,17 = 0, size 18 7554 break; 7555 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7556 event[14] = 1; 7557 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7558 // 16,17 = 0, size 18 7559 break; 7560 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7561 event[14] = 1; 7562 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7563 // EIR packets only contain a single inquiry response 7564 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7565 name = NULL; 7566 // Iterate over EIR data 7567 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7568 uint8_t data_type = ad_iterator_get_data_type(&context); 7569 uint8_t data_size = ad_iterator_get_data_len(&context); 7570 const uint8_t * data = ad_iterator_get_data(&context); 7571 // Prefer Complete Local Name over Shortened Local Name 7572 switch (data_type){ 7573 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7574 if (name) continue; 7575 /* fall through */ 7576 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7577 name = data; 7578 name_len = data_size; 7579 break; 7580 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7581 if (data_size != 8) break; 7582 event[16] = 1; 7583 memcpy(&event[17], data, 8); 7584 break; 7585 default: 7586 break; 7587 } 7588 } 7589 if (name){ 7590 event[25] = 1; 7591 // truncate name if needed 7592 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7593 event[26] = len; 7594 (void)memcpy(&event[27], name, len); 7595 event_size += len; 7596 } 7597 break; 7598 default: 7599 return; 7600 } 7601 event[1] = event_size - 2; 7602 hci_emit_event(event, event_size, 1); 7603 } 7604 } 7605 #endif 7606 7607 void hci_emit_state(void){ 7608 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7609 uint8_t event[3]; 7610 event[0] = BTSTACK_EVENT_STATE; 7611 event[1] = sizeof(event) - 2u; 7612 event[2] = hci_stack->state; 7613 hci_emit_event(event, sizeof(event), 1); 7614 } 7615 7616 #ifdef ENABLE_CLASSIC 7617 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7618 uint8_t event[13]; 7619 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7620 event[1] = sizeof(event) - 2; 7621 event[2] = status; 7622 little_endian_store_16(event, 3, con_handle); 7623 reverse_bd_addr(address, &event[5]); 7624 event[11] = 1; // ACL connection 7625 event[12] = 0; // encryption disabled 7626 hci_emit_event(event, sizeof(event), 1); 7627 } 7628 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7629 if (disable_l2cap_timeouts) return; 7630 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7631 uint8_t event[4]; 7632 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7633 event[1] = sizeof(event) - 2; 7634 little_endian_store_16(event, 2, conn->con_handle); 7635 hci_emit_event(event, sizeof(event), 1); 7636 } 7637 #endif 7638 7639 #ifdef ENABLE_BLE 7640 #ifdef ENABLE_LE_CENTRAL 7641 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){ 7642 uint8_t event[21]; 7643 event[0] = HCI_EVENT_LE_META; 7644 event[1] = sizeof(event) - 2u; 7645 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7646 event[3] = status; 7647 little_endian_store_16(event, 4, con_handle); 7648 event[6] = 0; // TODO: role 7649 event[7] = address_type; 7650 reverse_bd_addr(address, &event[8]); 7651 little_endian_store_16(event, 14, 0); // interval 7652 little_endian_store_16(event, 16, 0); // latency 7653 little_endian_store_16(event, 18, 0); // supervision timeout 7654 event[20] = 0; // master clock accuracy 7655 hci_emit_event(event, sizeof(event), 1); 7656 } 7657 #endif 7658 #endif 7659 7660 static void hci_emit_transport_packet_sent(void){ 7661 // notify upper stack that it might be possible to send again 7662 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7663 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7664 } 7665 7666 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7667 uint8_t event[6]; 7668 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7669 event[1] = sizeof(event) - 2u; 7670 event[2] = 0; // status = OK 7671 little_endian_store_16(event, 3, con_handle); 7672 event[5] = reason; 7673 hci_emit_event(event, sizeof(event), 1); 7674 } 7675 7676 static void hci_emit_nr_connections_changed(void){ 7677 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7678 uint8_t event[3]; 7679 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7680 event[1] = sizeof(event) - 2u; 7681 event[2] = nr_hci_connections(); 7682 hci_emit_event(event, sizeof(event), 1); 7683 } 7684 7685 static void hci_emit_hci_open_failed(void){ 7686 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7687 uint8_t event[2]; 7688 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7689 event[1] = sizeof(event) - 2u; 7690 hci_emit_event(event, sizeof(event), 1); 7691 } 7692 7693 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7694 log_info("hci_emit_dedicated_bonding_result %u ", status); 7695 uint8_t event[9]; 7696 int pos = 0; 7697 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7698 event[pos++] = sizeof(event) - 2u; 7699 event[pos++] = status; 7700 reverse_bd_addr(address, &event[pos]); 7701 hci_emit_event(event, sizeof(event), 1); 7702 } 7703 7704 7705 #ifdef ENABLE_CLASSIC 7706 7707 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7708 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7709 uint8_t event[5]; 7710 int pos = 0; 7711 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7712 event[pos++] = sizeof(event) - 2; 7713 little_endian_store_16(event, 2, con_handle); 7714 pos += 2; 7715 event[pos++] = level; 7716 hci_emit_event(event, sizeof(event), 1); 7717 } 7718 7719 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7720 if (!connection) return LEVEL_0; 7721 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7722 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7723 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7724 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7725 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7726 // LEVEL 4 always requires 128 bit encrytion key size 7727 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7728 security_level = LEVEL_3; 7729 } 7730 return security_level; 7731 } 7732 7733 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7734 uint8_t event[4]; 7735 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7736 event[1] = sizeof(event) - 2; 7737 event[2] = discoverable; 7738 event[3] = connectable; 7739 hci_emit_event(event, sizeof(event), 1); 7740 } 7741 7742 // query if remote side supports eSCO 7743 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7744 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7745 if (!connection) return false; 7746 return (connection->remote_supported_features[0] & 1) != 0; 7747 } 7748 7749 static bool hci_ssp_supported(hci_connection_t * connection){ 7750 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7751 return (connection->bonding_flags & mask) == mask; 7752 } 7753 7754 // query if remote side supports SSP 7755 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7756 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7757 if (!connection) return false; 7758 return hci_ssp_supported(connection) ? 1 : 0; 7759 } 7760 7761 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7762 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7763 } 7764 7765 /** 7766 * Check if remote supported features query has completed 7767 */ 7768 bool hci_remote_features_available(hci_con_handle_t handle){ 7769 hci_connection_t * connection = hci_connection_for_handle(handle); 7770 if (!connection) return false; 7771 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7772 } 7773 7774 /** 7775 * Trigger remote supported features query 7776 */ 7777 7778 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7779 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7780 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7781 } 7782 } 7783 7784 void hci_remote_features_query(hci_con_handle_t con_handle){ 7785 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7786 if (!connection) return; 7787 hci_trigger_remote_features_for_connection(connection); 7788 hci_run(); 7789 } 7790 7791 // GAP API 7792 /** 7793 * @bbrief enable/disable bonding. default is enabled 7794 * @praram enabled 7795 */ 7796 void gap_set_bondable_mode(int enable){ 7797 hci_stack->bondable = enable ? 1 : 0; 7798 } 7799 /** 7800 * @brief Get bondable mode. 7801 * @return 1 if bondable 7802 */ 7803 int gap_get_bondable_mode(void){ 7804 return hci_stack->bondable; 7805 } 7806 7807 /** 7808 * @brief map link keys to security levels 7809 */ 7810 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7811 switch (link_key_type){ 7812 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7813 return LEVEL_4; 7814 case COMBINATION_KEY: 7815 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7816 return LEVEL_3; 7817 default: 7818 return LEVEL_2; 7819 } 7820 } 7821 7822 /** 7823 * @brief map link keys to secure connection yes/no 7824 */ 7825 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7826 switch (link_key_type){ 7827 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7828 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7829 return true; 7830 default: 7831 return false; 7832 } 7833 } 7834 7835 /** 7836 * @brief map link keys to authenticated 7837 */ 7838 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7839 switch (link_key_type){ 7840 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7841 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7842 return true; 7843 default: 7844 return false; 7845 } 7846 } 7847 7848 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7849 log_info("gap_mitm_protection_required_for_security_level %u", level); 7850 return level > LEVEL_2; 7851 } 7852 7853 /** 7854 * @brief get current security level 7855 */ 7856 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7857 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7858 if (!connection) return LEVEL_0; 7859 return gap_security_level_for_connection(connection); 7860 } 7861 7862 /** 7863 * @brief request connection to device to 7864 * @result GAP_AUTHENTICATION_RESULT 7865 */ 7866 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7867 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7868 if (!connection){ 7869 hci_emit_security_level(con_handle, LEVEL_0); 7870 return; 7871 } 7872 7873 btstack_assert(hci_is_le_connection(connection) == false); 7874 7875 // 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) 7876 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7877 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7878 requested_level = LEVEL_4; 7879 } 7880 7881 gap_security_level_t current_level = gap_security_level(con_handle); 7882 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7883 requested_level, connection->requested_security_level, current_level); 7884 7885 // authentication active if authentication request was sent or planned level > 0 7886 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7887 if (authentication_active){ 7888 // authentication already active 7889 if (connection->requested_security_level < requested_level){ 7890 // increase requested level as new level is higher 7891 // TODO: handle re-authentication when done 7892 connection->requested_security_level = requested_level; 7893 } 7894 } else { 7895 // no request active, notify if security sufficient 7896 if (requested_level <= current_level){ 7897 hci_emit_security_level(con_handle, current_level); 7898 return; 7899 } 7900 7901 // store request 7902 connection->requested_security_level = requested_level; 7903 7904 // start to authenticate connection 7905 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7906 7907 // request remote features if not already active, also trigger hci_run 7908 hci_remote_features_query(con_handle); 7909 } 7910 } 7911 7912 /** 7913 * @brief start dedicated bonding with device. disconnect after bonding 7914 * @param device 7915 * @param request MITM protection 7916 * @result GAP_DEDICATED_BONDING_COMPLETE 7917 */ 7918 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7919 7920 // create connection state machine 7921 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7922 7923 if (!connection){ 7924 return BTSTACK_MEMORY_ALLOC_FAILED; 7925 } 7926 7927 // delete linkn key 7928 gap_drop_link_key_for_bd_addr(device); 7929 7930 // configure LEVEL_2/3, dedicated bonding 7931 connection->state = SEND_CREATE_CONNECTION; 7932 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7933 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7934 connection->bonding_flags = BONDING_DEDICATED; 7935 7936 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7937 7938 // handle: connnection failure (connection complete != ok) 7939 // handle: authentication failure 7940 // handle: disconnect on done 7941 7942 hci_run(); 7943 7944 return 0; 7945 } 7946 7947 void gap_set_local_name(const char * local_name){ 7948 hci_stack->local_name = local_name; 7949 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7950 // also update EIR if not set by user 7951 if (hci_stack->eir_data == NULL){ 7952 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7953 } 7954 hci_run(); 7955 } 7956 #endif 7957 7958 7959 #ifdef ENABLE_BLE 7960 7961 #ifdef ENABLE_LE_CENTRAL 7962 void gap_start_scan(void){ 7963 hci_stack->le_scanning_enabled = true; 7964 hci_run(); 7965 } 7966 7967 void gap_stop_scan(void){ 7968 hci_stack->le_scanning_enabled = false; 7969 hci_run(); 7970 } 7971 7972 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7973 hci_stack->le_scan_type = scan_type; 7974 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7975 hci_stack->le_scan_interval = scan_interval; 7976 hci_stack->le_scan_window = scan_window; 7977 hci_stack->le_scanning_param_update = true; 7978 hci_run(); 7979 } 7980 7981 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7982 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 7983 } 7984 7985 void gap_set_scan_duplicate_filter(bool enabled){ 7986 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 7987 } 7988 7989 void gap_set_scan_phys(uint8_t phys){ 7990 // LE Coded and LE 1M PHY 7991 hci_stack->le_scan_phys = phys & 0x05; 7992 } 7993 7994 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 7995 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 7996 if (!conn){ 7997 // disallow if le connection is already outgoing 7998 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7999 log_error("le connection already active"); 8000 return ERROR_CODE_COMMAND_DISALLOWED; 8001 } 8002 8003 log_info("gap_connect: no connection exists yet, creating context"); 8004 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 8005 if (!conn){ 8006 // notify client that alloc failed 8007 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 8008 log_info("gap_connect: failed to alloc hci_connection_t"); 8009 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 8010 } 8011 8012 // set le connecting state 8013 if (hci_is_le_connection_type(addr_type)){ 8014 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8015 } 8016 8017 conn->state = SEND_CREATE_CONNECTION; 8018 log_info("gap_connect: send create connection next"); 8019 hci_run(); 8020 return ERROR_CODE_SUCCESS; 8021 } 8022 8023 if (!hci_is_le_connection(conn) || 8024 (conn->state == SEND_CREATE_CONNECTION) || 8025 (conn->state == SENT_CREATE_CONNECTION)) { 8026 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 8027 log_error("gap_connect: classic connection or connect is already being created"); 8028 return GATT_CLIENT_IN_WRONG_STATE; 8029 } 8030 8031 // check if connection was just disconnected 8032 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8033 log_info("gap_connect: send create connection (again)"); 8034 conn->state = SEND_CREATE_CONNECTION; 8035 hci_run(); 8036 return ERROR_CODE_SUCCESS; 8037 } 8038 8039 log_info("gap_connect: context exists with state %u", conn->state); 8040 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 8041 hci_run(); 8042 return ERROR_CODE_SUCCESS; 8043 } 8044 8045 // @assumption: only a single outgoing LE Connection exists 8046 static hci_connection_t * gap_get_outgoing_connection(void){ 8047 btstack_linked_item_t *it; 8048 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8049 hci_connection_t * conn = (hci_connection_t *) it; 8050 if (!hci_is_le_connection(conn)) continue; 8051 switch (conn->state){ 8052 case SEND_CREATE_CONNECTION: 8053 case SENT_CREATE_CONNECTION: 8054 return conn; 8055 default: 8056 break; 8057 }; 8058 } 8059 return NULL; 8060 } 8061 8062 uint8_t gap_connect_cancel(void){ 8063 hci_connection_t * conn; 8064 switch (hci_stack->le_connecting_request){ 8065 case LE_CONNECTING_IDLE: 8066 break; 8067 case LE_CONNECTING_WHITELIST: 8068 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8069 hci_run(); 8070 break; 8071 case LE_CONNECTING_DIRECT: 8072 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8073 conn = gap_get_outgoing_connection(); 8074 if (conn == NULL){ 8075 hci_run(); 8076 } else { 8077 switch (conn->state){ 8078 case SEND_CREATE_CONNECTION: 8079 // skip sending create connection and emit event instead 8080 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8081 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8082 btstack_memory_hci_connection_free( conn ); 8083 break; 8084 case SENT_CREATE_CONNECTION: 8085 // let hci_run_general_gap_le cancel outgoing connection 8086 hci_run(); 8087 break; 8088 default: 8089 break; 8090 } 8091 } 8092 break; 8093 default: 8094 btstack_unreachable(); 8095 break; 8096 } 8097 return ERROR_CODE_SUCCESS; 8098 } 8099 8100 /** 8101 * @brief Set connection parameters for outgoing connections 8102 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8103 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8104 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8105 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8106 * @param conn_latency, default: 4 8107 * @param supervision_timeout (unit: 10ms), default: 720 ms 8108 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8109 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8110 */ 8111 8112 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8113 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8114 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8115 hci_stack->le_connection_scan_interval = conn_scan_interval; 8116 hci_stack->le_connection_scan_window = conn_scan_window; 8117 hci_stack->le_connection_interval_min = conn_interval_min; 8118 hci_stack->le_connection_interval_max = conn_interval_max; 8119 hci_stack->le_connection_latency = conn_latency; 8120 hci_stack->le_supervision_timeout = supervision_timeout; 8121 hci_stack->le_minimum_ce_length = min_ce_length; 8122 hci_stack->le_maximum_ce_length = max_ce_length; 8123 } 8124 8125 void gap_set_connection_phys(uint8_t phys){ 8126 // LE Coded, LE 1M, LE 2M PHY 8127 hci_stack->le_connection_phys = phys & 7; 8128 } 8129 8130 #endif 8131 8132 /** 8133 * @brief Updates the connection parameters for a given LE connection 8134 * @param handle 8135 * @param conn_interval_min (unit: 1.25ms) 8136 * @param conn_interval_max (unit: 1.25ms) 8137 * @param conn_latency 8138 * @param supervision_timeout (unit: 10ms) 8139 * @return 0 if ok 8140 */ 8141 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8142 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8143 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8144 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8145 connection->le_conn_interval_min = conn_interval_min; 8146 connection->le_conn_interval_max = conn_interval_max; 8147 connection->le_conn_latency = conn_latency; 8148 connection->le_supervision_timeout = supervision_timeout; 8149 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8150 hci_run(); 8151 return 0; 8152 } 8153 8154 /** 8155 * @brief Request an update of the connection parameter for a given LE connection 8156 * @param handle 8157 * @param conn_interval_min (unit: 1.25ms) 8158 * @param conn_interval_max (unit: 1.25ms) 8159 * @param conn_latency 8160 * @param supervision_timeout (unit: 10ms) 8161 * @return 0 if ok 8162 */ 8163 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8164 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8165 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8166 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8167 connection->le_conn_interval_min = conn_interval_min; 8168 connection->le_conn_interval_max = conn_interval_max; 8169 connection->le_conn_latency = conn_latency; 8170 connection->le_supervision_timeout = supervision_timeout; 8171 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8172 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8173 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8174 return 0; 8175 } 8176 8177 #ifdef ENABLE_LE_PERIPHERAL 8178 8179 /** 8180 * @brief Set Advertisement Data 8181 * @param advertising_data_length 8182 * @param advertising_data (max 31 octets) 8183 * @note data is not copied, pointer has to stay valid 8184 */ 8185 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8186 hci_stack->le_advertisements_data_len = advertising_data_length; 8187 hci_stack->le_advertisements_data = advertising_data; 8188 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8189 hci_run(); 8190 } 8191 8192 /** 8193 * @brief Set Scan Response Data 8194 * @param advertising_data_length 8195 * @param advertising_data (max 31 octets) 8196 * @note data is not copied, pointer has to stay valid 8197 */ 8198 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8199 hci_stack->le_scan_response_data_len = scan_response_data_length; 8200 hci_stack->le_scan_response_data = scan_response_data; 8201 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8202 hci_run(); 8203 } 8204 8205 /** 8206 * @brief Set Advertisement Parameters 8207 * @param adv_int_min 8208 * @param adv_int_max 8209 * @param adv_type 8210 * @param direct_address_type 8211 * @param direct_address 8212 * @param channel_map 8213 * @param filter_policy 8214 * 8215 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8216 */ 8217 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8218 uint8_t direct_address_typ, bd_addr_t direct_address, 8219 uint8_t channel_map, uint8_t filter_policy) { 8220 8221 hci_stack->le_advertisements_interval_min = adv_int_min; 8222 hci_stack->le_advertisements_interval_max = adv_int_max; 8223 hci_stack->le_advertisements_type = adv_type; 8224 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8225 hci_stack->le_advertisements_channel_map = channel_map; 8226 hci_stack->le_advertisements_filter_policy = filter_policy; 8227 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8228 6); 8229 8230 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8231 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8232 hci_run(); 8233 } 8234 8235 /** 8236 * @brief Enable/Disable Advertisements 8237 * @param enabled 8238 */ 8239 void gap_advertisements_enable(int enabled){ 8240 if (enabled == 0){ 8241 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8242 } else { 8243 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8244 } 8245 hci_update_advertisements_enabled_for_current_roles(); 8246 hci_run(); 8247 } 8248 8249 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8250 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8251 btstack_linked_list_iterator_t it; 8252 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8253 while (btstack_linked_list_iterator_has_next(&it)){ 8254 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8255 if ( item->advertising_handle == advertising_handle ) { 8256 return item; 8257 } 8258 } 8259 return NULL; 8260 } 8261 8262 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8263 // find free advertisement handle 8264 uint8_t advertisement_handle; 8265 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8266 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8267 } 8268 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8269 // clear 8270 memset(storage, 0, sizeof(le_advertising_set_t)); 8271 // copy params 8272 storage->advertising_handle = advertisement_handle; 8273 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8274 // add to list 8275 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8276 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8277 *out_advertising_handle = advertisement_handle; 8278 // set tasks and start 8279 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8280 hci_run(); 8281 return ERROR_CODE_SUCCESS; 8282 } 8283 8284 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8285 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8286 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8287 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8288 // set tasks and start 8289 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8290 hci_run(); 8291 return ERROR_CODE_SUCCESS; 8292 } 8293 8294 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8295 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8296 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8297 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8298 return ERROR_CODE_SUCCESS; 8299 } 8300 8301 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8302 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8303 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8304 memcpy(advertising_set->random_address, random_address, 6); 8305 // set tasks and start 8306 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8307 hci_run(); 8308 return ERROR_CODE_SUCCESS; 8309 } 8310 8311 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8312 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8313 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8314 advertising_set->adv_data = advertising_data; 8315 advertising_set->adv_data_len = advertising_data_length; 8316 // set tasks and start 8317 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8318 hci_run(); 8319 return ERROR_CODE_SUCCESS; 8320 } 8321 8322 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){ 8323 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8324 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8325 advertising_set->scan_data = scan_response_data; 8326 advertising_set->scan_data_len = scan_response_data_length; 8327 // set tasks and start 8328 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8329 hci_run(); 8330 return ERROR_CODE_SUCCESS; 8331 } 8332 8333 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8334 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8335 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8336 advertising_set->enable_timeout = timeout; 8337 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8338 // set tasks and start 8339 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8340 hci_run(); 8341 return ERROR_CODE_SUCCESS; 8342 } 8343 8344 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8345 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8346 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8347 // set tasks and start 8348 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8349 hci_run(); 8350 return ERROR_CODE_SUCCESS; 8351 } 8352 8353 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8354 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8355 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8356 // set tasks and start 8357 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8358 hci_run(); 8359 return ERROR_CODE_SUCCESS; 8360 } 8361 8362 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8363 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8364 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8365 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8366 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8367 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8368 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8369 // set tasks and start 8370 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8371 hci_run(); 8372 return ERROR_CODE_SUCCESS; 8373 } 8374 8375 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8376 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8377 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8378 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8379 return ERROR_CODE_SUCCESS; 8380 } 8381 8382 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8383 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8384 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8385 advertising_set->periodic_data = periodic_data; 8386 advertising_set->periodic_data_len = periodic_data_length; 8387 // set tasks and start 8388 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8389 hci_run(); 8390 return ERROR_CODE_SUCCESS; 8391 } 8392 8393 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8394 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8395 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8396 // set tasks and start 8397 advertising_set->periodic_include_adi = include_adi; 8398 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8399 hci_run(); 8400 return ERROR_CODE_SUCCESS; 8401 } 8402 8403 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8404 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8405 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8406 // set tasks and start 8407 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8408 hci_run(); 8409 return ERROR_CODE_SUCCESS; 8410 } 8411 8412 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8413 hci_stack->le_past_mode = mode; 8414 hci_stack->le_past_skip = skip; 8415 hci_stack->le_past_sync_timeout = sync_timeout; 8416 hci_stack->le_past_cte_type = cte_type; 8417 hci_stack->le_past_set_default_params = true; 8418 hci_run(); 8419 return ERROR_CODE_SUCCESS; 8420 } 8421 8422 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8423 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8424 if (hci_connection == NULL){ 8425 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8426 } 8427 hci_connection->le_past_sync_handle = sync_handle; 8428 hci_connection->le_past_service_data = service_data; 8429 hci_run(); 8430 return ERROR_CODE_SUCCESS; 8431 } 8432 8433 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8434 8435 #endif 8436 8437 #endif 8438 8439 void hci_le_set_own_address_type(uint8_t own_address_type){ 8440 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8441 if (own_address_type == hci_stack->le_own_addr_type) return; 8442 hci_stack->le_own_addr_type = own_address_type; 8443 8444 #ifdef ENABLE_LE_PERIPHERAL 8445 // update advertisement parameters, too 8446 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8447 hci_run(); 8448 #endif 8449 #ifdef ENABLE_LE_CENTRAL 8450 // note: we don't update scan parameters or modify ongoing connection attempts 8451 #endif 8452 } 8453 8454 void hci_le_random_address_set(const bd_addr_t random_address){ 8455 memcpy(hci_stack->le_random_address, random_address, 6); 8456 hci_stack->le_random_address_set = true; 8457 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8458 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8459 if (hci_extended_advertising_supported()){ 8460 // force advertising set creation for LE Set Advertising Set Random Address 8461 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8462 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8463 } 8464 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8465 } 8466 #endif 8467 hci_run(); 8468 } 8469 8470 #endif 8471 8472 uint8_t gap_disconnect(hci_con_handle_t handle){ 8473 hci_connection_t * conn = hci_connection_for_handle(handle); 8474 if (!conn){ 8475 hci_emit_disconnection_complete(handle, 0); 8476 return 0; 8477 } 8478 // ignore if already disconnected 8479 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8480 return 0; 8481 } 8482 conn->state = SEND_DISCONNECT; 8483 hci_run(); 8484 return 0; 8485 } 8486 8487 int gap_read_rssi(hci_con_handle_t con_handle){ 8488 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8489 if (hci_connection == NULL) return 0; 8490 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8491 hci_run(); 8492 return 1; 8493 } 8494 8495 /** 8496 * @brief Get connection type 8497 * @param con_handle 8498 * @result connection_type 8499 */ 8500 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8501 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8502 if (!conn) return GAP_CONNECTION_INVALID; 8503 switch (conn->address_type){ 8504 case BD_ADDR_TYPE_LE_PUBLIC: 8505 case BD_ADDR_TYPE_LE_RANDOM: 8506 return GAP_CONNECTION_LE; 8507 case BD_ADDR_TYPE_SCO: 8508 return GAP_CONNECTION_SCO; 8509 case BD_ADDR_TYPE_ACL: 8510 return GAP_CONNECTION_ACL; 8511 default: 8512 return GAP_CONNECTION_INVALID; 8513 } 8514 } 8515 8516 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8517 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8518 if (!conn) return HCI_ROLE_INVALID; 8519 return (hci_role_t) conn->role; 8520 } 8521 8522 8523 #ifdef ENABLE_CLASSIC 8524 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8525 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8526 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8527 conn->request_role = role; 8528 hci_run(); 8529 return ERROR_CODE_SUCCESS; 8530 } 8531 #endif 8532 8533 #ifdef ENABLE_BLE 8534 8535 uint8_t gap_le_set_phy(hci_con_handle_t con_handle, uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint8_t phy_options){ 8536 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8537 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8538 8539 conn->le_phy_update_all_phys = all_phys; 8540 conn->le_phy_update_tx_phys = tx_phys; 8541 conn->le_phy_update_rx_phys = rx_phys; 8542 conn->le_phy_update_phy_options = phy_options; 8543 8544 hci_run(); 8545 8546 return 0; 8547 } 8548 8549 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8550 // check if already in list 8551 btstack_linked_list_iterator_t it; 8552 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8553 while (btstack_linked_list_iterator_has_next(&it)) { 8554 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8555 if (entry->address_type != address_type) { 8556 continue; 8557 } 8558 if (memcmp(entry->address, address, 6) != 0) { 8559 continue; 8560 } 8561 // disallow if already scheduled to add 8562 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 8563 return ERROR_CODE_COMMAND_DISALLOWED; 8564 } 8565 // still on controller, but scheduled to remove -> re-add 8566 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 8567 return ERROR_CODE_SUCCESS; 8568 } 8569 // alloc and add to list 8570 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8571 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8572 entry->address_type = address_type; 8573 (void)memcpy(entry->address, address, 6); 8574 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8575 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8576 return ERROR_CODE_SUCCESS; 8577 } 8578 8579 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8580 btstack_linked_list_iterator_t it; 8581 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8582 while (btstack_linked_list_iterator_has_next(&it)){ 8583 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8584 if (entry->address_type != address_type) { 8585 continue; 8586 } 8587 if (memcmp(entry->address, address, 6) != 0) { 8588 continue; 8589 } 8590 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8591 // remove from controller if already present 8592 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8593 } else { 8594 // directly remove entry from whitelist 8595 btstack_linked_list_iterator_remove(&it); 8596 btstack_memory_whitelist_entry_free(entry); 8597 } 8598 return ERROR_CODE_SUCCESS; 8599 } 8600 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8601 } 8602 8603 static void hci_whitelist_clear(void){ 8604 btstack_linked_list_iterator_t it; 8605 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8606 while (btstack_linked_list_iterator_has_next(&it)){ 8607 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8608 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8609 // remove from controller if already present 8610 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8611 continue; 8612 } 8613 // directly remove entry from whitelist 8614 btstack_linked_list_iterator_remove(&it); 8615 btstack_memory_whitelist_entry_free(entry); 8616 } 8617 } 8618 8619 /** 8620 * @brief Clear Whitelist 8621 * @return 0 if ok 8622 */ 8623 uint8_t gap_whitelist_clear(void){ 8624 hci_whitelist_clear(); 8625 hci_run(); 8626 return ERROR_CODE_SUCCESS; 8627 } 8628 8629 /** 8630 * @brief Add Device to Whitelist 8631 * @param address_typ 8632 * @param address 8633 * @return 0 if ok 8634 */ 8635 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8636 uint8_t status = hci_whitelist_add(address_type, address); 8637 if (status){ 8638 return status; 8639 } 8640 hci_run(); 8641 return ERROR_CODE_SUCCESS; 8642 } 8643 8644 /** 8645 * @brief Remove Device from Whitelist 8646 * @param address_typ 8647 * @param address 8648 * @return 0 if ok 8649 */ 8650 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8651 uint8_t status = hci_whitelist_remove(address_type, address); 8652 if (status){ 8653 return status; 8654 } 8655 hci_run(); 8656 return ERROR_CODE_SUCCESS; 8657 } 8658 8659 #ifdef ENABLE_LE_CENTRAL 8660 /** 8661 * @brief Connect with Whitelist 8662 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8663 * @return - if ok 8664 */ 8665 uint8_t gap_connect_with_whitelist(void){ 8666 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8667 return ERROR_CODE_COMMAND_DISALLOWED; 8668 } 8669 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8670 hci_run(); 8671 return ERROR_CODE_SUCCESS; 8672 } 8673 8674 /** 8675 * @brief Auto Connection Establishment - Start Connecting to device 8676 * @param address_typ 8677 * @param address 8678 * @return 0 if ok 8679 */ 8680 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8681 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8682 return ERROR_CODE_COMMAND_DISALLOWED; 8683 } 8684 8685 uint8_t status = hci_whitelist_add(address_type, address); 8686 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8687 return status; 8688 } 8689 8690 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8691 8692 hci_run(); 8693 return ERROR_CODE_SUCCESS; 8694 } 8695 8696 /** 8697 * @brief Auto Connection Establishment - Stop Connecting to device 8698 * @param address_typ 8699 * @param address 8700 * @return 0 if ok 8701 */ 8702 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8703 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8704 return ERROR_CODE_COMMAND_DISALLOWED; 8705 } 8706 8707 hci_whitelist_remove(address_type, address); 8708 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8709 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8710 } 8711 hci_run(); 8712 return 0; 8713 } 8714 8715 /** 8716 * @brief Auto Connection Establishment - Stop everything 8717 * @note Convenience function to stop all active auto connection attempts 8718 */ 8719 uint8_t gap_auto_connection_stop_all(void){ 8720 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8721 return ERROR_CODE_COMMAND_DISALLOWED; 8722 } 8723 hci_whitelist_clear(); 8724 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8725 hci_run(); 8726 return ERROR_CODE_SUCCESS; 8727 } 8728 8729 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8730 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8731 if (!conn) return 0; 8732 return conn->le_connection_interval; 8733 } 8734 #endif 8735 #endif 8736 8737 #ifdef ENABLE_CLASSIC 8738 /** 8739 * @brief Set Extended Inquiry Response data 8740 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8741 * @note has to be done before stack starts up 8742 */ 8743 void gap_set_extended_inquiry_response(const uint8_t * data){ 8744 hci_stack->eir_data = data; 8745 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8746 hci_run(); 8747 } 8748 8749 /** 8750 * @brief Start GAP Classic Inquiry 8751 * @param duration in 1.28s units 8752 * @return 0 if ok 8753 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8754 */ 8755 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8756 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8757 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8758 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8759 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8760 } 8761 hci_stack->inquiry_state = duration_in_1280ms_units; 8762 hci_stack->inquiry_max_period_length = 0; 8763 hci_stack->inquiry_min_period_length = 0; 8764 hci_run(); 8765 return 0; 8766 } 8767 8768 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8769 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8770 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8771 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8772 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8773 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8774 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8775 8776 hci_stack->inquiry_state = duration; 8777 hci_stack->inquiry_max_period_length = max_period_length; 8778 hci_stack->inquiry_min_period_length = min_period_length; 8779 hci_run(); 8780 return 0; 8781 } 8782 8783 /** 8784 * @brief Stop GAP Classic Inquiry 8785 * @return 0 if ok 8786 */ 8787 int gap_inquiry_stop(void){ 8788 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8789 // emit inquiry complete event, before it even started 8790 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8791 hci_emit_event(event, sizeof(event), 1); 8792 return 0; 8793 } 8794 switch (hci_stack->inquiry_state){ 8795 case GAP_INQUIRY_STATE_ACTIVE: 8796 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8797 hci_run(); 8798 return ERROR_CODE_SUCCESS; 8799 case GAP_INQUIRY_STATE_PERIODIC: 8800 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8801 hci_run(); 8802 return ERROR_CODE_SUCCESS; 8803 default: 8804 return ERROR_CODE_COMMAND_DISALLOWED; 8805 } 8806 } 8807 8808 void gap_inquiry_set_lap(uint32_t lap){ 8809 hci_stack->inquiry_lap = lap; 8810 } 8811 8812 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8813 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8814 hci_stack->inquiry_scan_window = inquiry_scan_window; 8815 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8816 hci_run(); 8817 } 8818 8819 8820 /** 8821 * @brief Remote Name Request 8822 * @param addr 8823 * @param page_scan_repetition_mode 8824 * @param clock_offset only used when bit 15 is set 8825 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8826 */ 8827 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8828 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8829 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8830 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8831 hci_stack->remote_name_clock_offset = clock_offset; 8832 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8833 hci_run(); 8834 return 0; 8835 } 8836 8837 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8838 hci_stack->gap_pairing_state = state; 8839 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8840 hci_run(); 8841 return 0; 8842 } 8843 8844 /** 8845 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8846 * @param addr 8847 * @param pin_data 8848 * @param pin_len 8849 * @return 0 if ok 8850 */ 8851 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8852 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8853 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8854 hci_stack->gap_pairing_pin_len = pin_len; 8855 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8856 } 8857 8858 /** 8859 * @brief Legacy Pairing Pin Code Response 8860 * @param addr 8861 * @param pin 8862 * @return 0 if ok 8863 */ 8864 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8865 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8866 } 8867 8868 /** 8869 * @brief Abort Legacy Pairing 8870 * @param addr 8871 * @param pin 8872 * @return 0 if ok 8873 */ 8874 int gap_pin_code_negative(bd_addr_t addr){ 8875 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8876 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8877 } 8878 8879 /** 8880 * @brief SSP Passkey Response 8881 * @param addr 8882 * @param passkey 8883 * @return 0 if ok 8884 */ 8885 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8886 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8887 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8888 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8889 } 8890 8891 /** 8892 * @brief Abort SSP Passkey Entry/Pairing 8893 * @param addr 8894 * @param pin 8895 * @return 0 if ok 8896 */ 8897 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8898 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8899 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8900 } 8901 8902 /** 8903 * @brief Accept SSP Numeric Comparison 8904 * @param addr 8905 * @param passkey 8906 * @return 0 if ok 8907 */ 8908 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8909 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8910 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8911 } 8912 8913 /** 8914 * @brief Abort SSP Numeric Comparison/Pairing 8915 * @param addr 8916 * @param pin 8917 * @return 0 if ok 8918 */ 8919 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8920 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8921 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8922 } 8923 8924 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8925 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8926 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8927 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8928 connectionSetAuthenticationFlags(conn, flag); 8929 hci_run(); 8930 return ERROR_CODE_SUCCESS; 8931 } 8932 #endif 8933 8934 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8935 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8936 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8937 } 8938 8939 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8940 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8941 } 8942 #endif 8943 8944 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8945 /** 8946 * @brief Report Remote OOB Data 8947 * @param bd_addr 8948 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8949 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8950 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8951 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8952 */ 8953 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){ 8954 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8955 if (connection == NULL) { 8956 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8957 } 8958 connection->classic_oob_c_192 = c_192; 8959 connection->classic_oob_r_192 = r_192; 8960 8961 // ignore P-256 if not supported by us 8962 if (hci_stack->secure_connections_active){ 8963 connection->classic_oob_c_256 = c_256; 8964 connection->classic_oob_r_256 = r_256; 8965 } 8966 8967 return ERROR_CODE_SUCCESS; 8968 } 8969 /** 8970 * @brief Generate new OOB data 8971 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 8972 */ 8973 void gap_ssp_generate_oob_data(void){ 8974 hci_stack->classic_read_local_oob_data = true; 8975 hci_run(); 8976 } 8977 8978 #endif 8979 8980 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 8981 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 8982 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8983 if (connection == NULL) { 8984 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8985 } 8986 8987 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 8988 connection->link_key_type = type; 8989 8990 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 8991 } 8992 8993 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 8994 /** 8995 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 8996 * @param inquiry_mode see bluetooth_defines.h 8997 */ 8998 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 8999 hci_stack->inquiry_mode = inquiry_mode; 9000 } 9001 9002 /** 9003 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9004 */ 9005 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9006 hci_stack->sco_voice_setting = voice_setting; 9007 } 9008 9009 /** 9010 * @brief Get SCO Voice Setting 9011 * @return current voice setting 9012 */ 9013 uint16_t hci_get_sco_voice_setting(void){ 9014 return hci_stack->sco_voice_setting; 9015 } 9016 9017 static int hci_have_usb_transport(void){ 9018 if (!hci_stack->hci_transport) return 0; 9019 const char * transport_name = hci_stack->hci_transport->name; 9020 if (!transport_name) return 0; 9021 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9022 } 9023 9024 /** @brief Get SCO packet length for current SCO Voice setting 9025 * @note Using SCO packets of the exact length is required for USB transfer 9026 * @return Length of SCO packets in bytes (not audio frames) 9027 */ 9028 uint16_t hci_get_sco_packet_length(void){ 9029 uint16_t sco_packet_length = 0; 9030 9031 #ifdef ENABLE_SCO_OVER_HCI 9032 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9033 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 9034 9035 if (hci_have_usb_transport()){ 9036 // see Core Spec for H2 USB Transfer. 9037 // 3 byte SCO header + 24 bytes per connection 9038 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 9039 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 9040 } else { 9041 // 3 byte SCO header + SCO packet size over the air (60 bytes) 9042 sco_packet_length = 3 + 60 * multiplier; 9043 // assert that it still fits inside an SCO buffer 9044 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9045 sco_packet_length = 3 + 60; 9046 } 9047 } 9048 #endif 9049 9050 #ifdef HAVE_SCO_TRANSPORT 9051 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9052 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 9053 sco_packet_length = 3 + 60 * multiplier; 9054 #endif 9055 return sco_packet_length; 9056 } 9057 9058 /** 9059 * @brief Sets the master/slave policy 9060 * @param policy (0: attempt to become master, 1: let connecting device decide) 9061 */ 9062 void hci_set_master_slave_policy(uint8_t policy){ 9063 hci_stack->master_slave_policy = policy; 9064 } 9065 9066 #endif 9067 9068 HCI_STATE hci_get_state(void){ 9069 return hci_stack->state; 9070 } 9071 9072 #ifdef ENABLE_CLASSIC 9073 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9074 hci_stack->gap_classic_accept_callback = accept_callback; 9075 } 9076 #endif 9077 9078 /** 9079 * @brief Set callback for Bluetooth Hardware Error 9080 */ 9081 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9082 hci_stack->hardware_error_callback = fn; 9083 } 9084 9085 void hci_disconnect_all(void){ 9086 btstack_linked_list_iterator_t it; 9087 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9088 while (btstack_linked_list_iterator_has_next(&it)){ 9089 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9090 if (con->state == SENT_DISCONNECT) continue; 9091 con->state = SEND_DISCONNECT; 9092 } 9093 hci_run(); 9094 } 9095 9096 uint16_t hci_get_manufacturer(void){ 9097 return hci_stack->manufacturer; 9098 } 9099 9100 #ifdef ENABLE_BLE 9101 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9102 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9103 if (!hci_con) return NULL; 9104 return &hci_con->sm_connection; 9105 } 9106 9107 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9108 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9109 #endif 9110 9111 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9112 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9113 if (hci_connection == NULL) return 0; 9114 if (hci_is_le_connection(hci_connection)){ 9115 #ifdef ENABLE_BLE 9116 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9117 if (sm_conn->sm_connection_encrypted) { 9118 return sm_conn->sm_actual_encryption_key_size; 9119 } 9120 #endif 9121 } else { 9122 #ifdef ENABLE_CLASSIC 9123 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9124 return hci_connection->encryption_key_size; 9125 } 9126 #endif 9127 } 9128 return 0; 9129 } 9130 9131 bool gap_authenticated(hci_con_handle_t con_handle){ 9132 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9133 if (hci_connection == NULL) return false; 9134 9135 switch (hci_connection->address_type){ 9136 #ifdef ENABLE_BLE 9137 case BD_ADDR_TYPE_LE_PUBLIC: 9138 case BD_ADDR_TYPE_LE_RANDOM: 9139 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9140 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9141 #endif 9142 #ifdef ENABLE_CLASSIC 9143 case BD_ADDR_TYPE_SCO: 9144 case BD_ADDR_TYPE_ACL: 9145 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9146 #endif 9147 default: 9148 return false; 9149 } 9150 } 9151 9152 bool gap_secure_connection(hci_con_handle_t con_handle){ 9153 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9154 if (hci_connection == NULL) return 0; 9155 9156 switch (hci_connection->address_type){ 9157 #ifdef ENABLE_BLE 9158 case BD_ADDR_TYPE_LE_PUBLIC: 9159 case BD_ADDR_TYPE_LE_RANDOM: 9160 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9161 return hci_connection->sm_connection.sm_connection_sc != 0; 9162 #endif 9163 #ifdef ENABLE_CLASSIC 9164 case BD_ADDR_TYPE_SCO: 9165 case BD_ADDR_TYPE_ACL: 9166 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9167 #endif 9168 default: 9169 return false; 9170 } 9171 } 9172 9173 bool gap_bonded(hci_con_handle_t con_handle){ 9174 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9175 if (hci_connection == NULL) return 0; 9176 9177 #ifdef ENABLE_CLASSIC 9178 link_key_t link_key; 9179 link_key_type_t link_key_type; 9180 #endif 9181 switch (hci_connection->address_type){ 9182 #ifdef ENABLE_BLE 9183 case BD_ADDR_TYPE_LE_PUBLIC: 9184 case BD_ADDR_TYPE_LE_RANDOM: 9185 return hci_connection->sm_connection.sm_le_db_index >= 0; 9186 #endif 9187 #ifdef ENABLE_CLASSIC 9188 case BD_ADDR_TYPE_SCO: 9189 case BD_ADDR_TYPE_ACL: 9190 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9191 #endif 9192 default: 9193 return false; 9194 } 9195 } 9196 9197 #ifdef ENABLE_BLE 9198 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9199 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9200 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9201 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9202 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9203 return sm_conn->sm_connection_authorization_state; 9204 } 9205 #endif 9206 9207 #ifdef ENABLE_CLASSIC 9208 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){ 9209 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9210 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9211 conn->sniff_min_interval = sniff_min_interval; 9212 conn->sniff_max_interval = sniff_max_interval; 9213 conn->sniff_attempt = sniff_attempt; 9214 conn->sniff_timeout = sniff_timeout; 9215 hci_run(); 9216 return 0; 9217 } 9218 9219 /** 9220 * @brief Exit Sniff mode 9221 * @param con_handle 9222 @ @return 0 if ok 9223 */ 9224 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9225 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9226 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9227 conn->sniff_min_interval = 0xffff; 9228 hci_run(); 9229 return 0; 9230 } 9231 9232 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){ 9233 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9234 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9235 conn->sniff_subrating_max_latency = max_latency; 9236 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9237 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9238 hci_run(); 9239 return ERROR_CODE_SUCCESS; 9240 } 9241 9242 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){ 9243 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9244 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9245 conn->qos_service_type = service_type; 9246 conn->qos_token_rate = token_rate; 9247 conn->qos_peak_bandwidth = peak_bandwidth; 9248 conn->qos_latency = latency; 9249 conn->qos_delay_variation = delay_variation; 9250 hci_run(); 9251 return ERROR_CODE_SUCCESS; 9252 } 9253 9254 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9255 hci_stack->new_page_scan_interval = page_scan_interval; 9256 hci_stack->new_page_scan_window = page_scan_window; 9257 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9258 hci_run(); 9259 } 9260 9261 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9262 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9263 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9264 hci_run(); 9265 } 9266 9267 void gap_set_page_timeout(uint16_t page_timeout){ 9268 hci_stack->page_timeout = page_timeout; 9269 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9270 hci_run(); 9271 } 9272 9273 #endif 9274 9275 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9276 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9277 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9278 if (le_device_db_index >= le_device_db_max_count()) return; 9279 uint8_t offset = le_device_db_index >> 3; 9280 uint8_t mask = 1 << (le_device_db_index & 7); 9281 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9282 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9283 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9284 // note: go back to remove entries, otherwise, a remove + add will skip the add 9285 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9286 } 9287 } 9288 9289 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9290 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9291 if (le_device_db_index >= le_device_db_max_count()) return; 9292 uint8_t offset = le_device_db_index >> 3; 9293 uint8_t mask = 1 << (le_device_db_index & 7); 9294 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9295 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9296 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9297 } 9298 } 9299 9300 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9301 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9302 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9303 } 9304 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9305 // restart le resolving list update 9306 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9307 } 9308 return ERROR_CODE_SUCCESS; 9309 } 9310 9311 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9312 hci_stack->le_privacy_mode = privacy_mode; 9313 } 9314 #endif 9315 9316 #ifdef ENABLE_BLE 9317 #ifdef ENABLE_LE_CENTRAL 9318 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9319 9320 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9321 // check if already in list 9322 btstack_linked_list_iterator_t it; 9323 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9324 while (btstack_linked_list_iterator_has_next(&it)) { 9325 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9326 if (entry->sid != advertising_sid) { 9327 continue; 9328 } 9329 if (entry->address_type != address_type) { 9330 continue; 9331 } 9332 if (memcmp(entry->address, address, 6) != 0) { 9333 continue; 9334 } 9335 // disallow if already scheduled to add 9336 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9337 return ERROR_CODE_COMMAND_DISALLOWED; 9338 } 9339 // still on controller, but scheduled to remove -> re-add 9340 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9341 return ERROR_CODE_SUCCESS; 9342 } 9343 // alloc and add to list 9344 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9345 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9346 entry->sid = advertising_sid; 9347 entry->address_type = address_type; 9348 (void)memcpy(entry->address, address, 6); 9349 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9350 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9351 return ERROR_CODE_SUCCESS; 9352 } 9353 9354 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9355 btstack_linked_list_iterator_t it; 9356 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9357 while (btstack_linked_list_iterator_has_next(&it)){ 9358 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9359 if (entry->sid != advertising_sid) { 9360 continue; 9361 } 9362 if (entry->address_type != address_type) { 9363 continue; 9364 } 9365 if (memcmp(entry->address, address, 6) != 0) { 9366 continue; 9367 } 9368 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9369 // remove from controller if already present 9370 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9371 } else { 9372 // directly remove entry from whitelist 9373 btstack_linked_list_iterator_remove(&it); 9374 btstack_memory_periodic_advertiser_list_entry_free(entry); 9375 } 9376 return ERROR_CODE_SUCCESS; 9377 } 9378 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9379 } 9380 9381 static void hci_periodic_advertiser_list_clear(void){ 9382 btstack_linked_list_iterator_t it; 9383 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9384 while (btstack_linked_list_iterator_has_next(&it)){ 9385 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9386 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9387 // remove from controller if already present 9388 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9389 continue; 9390 } 9391 // directly remove entry from whitelist 9392 btstack_linked_list_iterator_remove(&it); 9393 btstack_memory_periodic_advertiser_list_entry_free(entry); 9394 } 9395 } 9396 9397 uint8_t gap_periodic_advertiser_list_clear(void){ 9398 hci_periodic_advertiser_list_clear(); 9399 hci_run(); 9400 return ERROR_CODE_SUCCESS; 9401 } 9402 9403 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9404 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9405 if (status){ 9406 return status; 9407 } 9408 hci_run(); 9409 return ERROR_CODE_SUCCESS; 9410 } 9411 9412 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9413 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9414 if (status){ 9415 return status; 9416 } 9417 hci_run(); 9418 return ERROR_CODE_SUCCESS; 9419 } 9420 9421 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9422 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9423 // abort if already active 9424 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9425 return ERROR_CODE_COMMAND_DISALLOWED; 9426 } 9427 // store request 9428 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9429 hci_stack->le_periodic_sync_options = options; 9430 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9431 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9432 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9433 hci_stack->le_periodic_sync_skip = skip; 9434 hci_stack->le_periodic_sync_timeout = sync_timeout; 9435 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9436 9437 hci_run(); 9438 return ERROR_CODE_SUCCESS; 9439 } 9440 9441 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9442 // abort if not requested 9443 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9444 return ERROR_CODE_COMMAND_DISALLOWED; 9445 } 9446 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9447 hci_run(); 9448 return ERROR_CODE_SUCCESS; 9449 } 9450 9451 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9452 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9453 return ERROR_CODE_COMMAND_DISALLOWED; 9454 } 9455 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9456 hci_run(); 9457 return ERROR_CODE_SUCCESS; 9458 } 9459 9460 #endif 9461 #endif 9462 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9463 static hci_iso_stream_t * 9464 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9465 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9466 if (iso_stream != NULL){ 9467 } else { 9468 iso_stream->iso_type = iso_type; 9469 iso_stream->state = state; 9470 iso_stream->group_id = group_id; 9471 iso_stream->stream_id = stream_id; 9472 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9473 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9474 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9475 } 9476 return iso_stream; 9477 } 9478 9479 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9480 btstack_linked_list_iterator_t it; 9481 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9482 while (btstack_linked_list_iterator_has_next(&it)){ 9483 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9484 if (iso_stream->cis_handle == con_handle ) { 9485 return iso_stream; 9486 } 9487 } 9488 return NULL; 9489 } 9490 9491 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9492 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9493 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9494 btstack_memory_hci_iso_stream_free(iso_stream); 9495 } 9496 9497 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9498 btstack_linked_list_iterator_t it; 9499 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9500 while (btstack_linked_list_iterator_has_next(&it)){ 9501 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9502 if ((iso_stream->group_id == group_id) && 9503 (iso_stream->iso_type == iso_type)){ 9504 btstack_linked_list_iterator_remove(&it); 9505 btstack_memory_hci_iso_stream_free(iso_stream); 9506 } 9507 } 9508 } 9509 9510 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9511 btstack_linked_list_iterator_t it; 9512 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9513 while (btstack_linked_list_iterator_has_next(&it)){ 9514 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9515 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9516 (iso_stream->group_id == group_id)){ 9517 btstack_linked_list_iterator_remove(&it); 9518 btstack_memory_hci_iso_stream_free(iso_stream); 9519 } 9520 } 9521 } 9522 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9523 btstack_linked_list_iterator_t it; 9524 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9525 while (btstack_linked_list_iterator_has_next(&it)){ 9526 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9527 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9528 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9529 } 9530 } 9531 } 9532 9533 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9534 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9535 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9536 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9537 return (sdu_len_offset + 2 + sdu_len) == size; 9538 } 9539 9540 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9541 if (hci_stack->iso_packet_handler == NULL) { 9542 return; 9543 } 9544 if (size < 4) { 9545 return; 9546 } 9547 9548 // parse header 9549 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9550 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9551 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9552 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9553 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9554 9555 // assert packet is complete 9556 if ((iso_data_len + 4u) != size){ 9557 return; 9558 } 9559 9560 if ((pb_flag & 0x01) == 0){ 9561 if (pb_flag == 0x02){ 9562 // The ISO_Data_Load field contains a header and a complete SDU. 9563 if (hci_iso_sdu_complete(packet, size)) { 9564 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9565 } 9566 } else { 9567 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9568 if (iso_stream == NULL){ 9569 return; 9570 } 9571 if (size > HCI_ISO_PAYLOAD_SIZE){ 9572 return; 9573 } 9574 memcpy(iso_stream->reassembly_buffer, packet, size); 9575 // fix pb_flag 9576 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9577 iso_stream->reassembly_pos = size; 9578 } 9579 } else { 9580 // iso_data_load contains continuation or last fragment of an SDU 9581 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9582 if (ts_flag != 0){ 9583 return; 9584 } 9585 // append fragment 9586 if (iso_stream == NULL){ 9587 return; 9588 } 9589 if (iso_stream->reassembly_pos == 0){ 9590 return; 9591 } 9592 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9593 // reset reassembly buffer 9594 iso_stream->reassembly_pos = 0; 9595 return; 9596 } 9597 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9598 iso_stream->reassembly_pos += iso_data_len; 9599 9600 // deliver if last fragment and SDU complete 9601 if (pb_flag == 0x03){ 9602 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9603 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9604 } 9605 iso_stream->reassembly_pos = 0; 9606 } 9607 } 9608 } 9609 9610 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9611 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9612 uint16_t pos = 0; 9613 event[pos++] = HCI_EVENT_META_GAP; 9614 event[pos++] = 4 + (2 * big->num_bis); 9615 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9616 event[pos++] = status; 9617 event[pos++] = big->big_handle; 9618 event[pos++] = big->num_bis; 9619 uint8_t i; 9620 for (i=0;i<big->num_bis;i++){ 9621 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9622 pos += 2; 9623 } 9624 hci_emit_event(event, pos, 0); 9625 } 9626 9627 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9628 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9629 uint16_t pos = 0; 9630 event[pos++] = HCI_EVENT_META_GAP; 9631 event[pos++] = 4 + (2 * cig->num_cis); 9632 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9633 event[pos++] = status; 9634 event[pos++] = cig->cig_id; 9635 event[pos++] = cig->num_cis; 9636 uint8_t i; 9637 for (i=0;i<cig->num_cis;i++){ 9638 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9639 pos += 2; 9640 } 9641 hci_emit_event(event, pos, 0); 9642 } 9643 9644 static void 9645 hci_emit_cis_created(uint8_t cig_id, hci_con_handle_t cis_con_handle, uint8_t status) { 9646 uint8_t event [7]; 9647 uint16_t pos = 0; 9648 event[pos++] = HCI_EVENT_META_GAP; 9649 event[pos++] = 5; 9650 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9651 event[pos++] = status; 9652 event[pos++] = cig_id; 9653 little_endian_store_16(event, pos, cis_con_handle); 9654 pos += 2; 9655 hci_emit_event(event, pos, 0); 9656 } 9657 9658 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9659 uint8_t event [4]; 9660 uint16_t pos = 0; 9661 event[pos++] = HCI_EVENT_META_GAP; 9662 event[pos++] = 2; 9663 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9664 event[pos++] = big->big_handle; 9665 hci_emit_event(event, pos, 0); 9666 } 9667 9668 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9669 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9670 uint16_t pos = 0; 9671 event[pos++] = HCI_EVENT_META_GAP; 9672 event[pos++] = 4; 9673 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9674 event[pos++] = status; 9675 event[pos++] = big_sync->big_handle; 9676 event[pos++] = big_sync->num_bis; 9677 uint8_t i; 9678 for (i=0;i<big_sync->num_bis;i++){ 9679 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9680 pos += 2; 9681 } 9682 hci_emit_event(event, pos, 0); 9683 } 9684 9685 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9686 uint8_t event [4]; 9687 uint16_t pos = 0; 9688 event[pos++] = HCI_EVENT_META_GAP; 9689 event[pos++] = 2; 9690 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9691 event[pos++] = big_handle; 9692 hci_emit_event(event, pos, 0); 9693 } 9694 9695 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9696 uint8_t event[6]; 9697 uint16_t pos = 0; 9698 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9699 event[pos++] = sizeof(event) - 2; 9700 event[pos++] = big->big_handle; 9701 event[pos++] = bis_index; 9702 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9703 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9704 } 9705 9706 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9707 uint8_t event[4]; 9708 uint16_t pos = 0; 9709 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9710 event[pos++] = sizeof(event) - 2; 9711 little_endian_store_16(event, pos, cis_con_handle); 9712 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9713 } 9714 9715 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9716 btstack_linked_list_iterator_t it; 9717 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9718 while (btstack_linked_list_iterator_has_next(&it)){ 9719 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9720 if ( big->big_handle == big_handle ) { 9721 return big; 9722 } 9723 } 9724 return NULL; 9725 } 9726 9727 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9728 btstack_linked_list_iterator_t it; 9729 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9730 while (btstack_linked_list_iterator_has_next(&it)){ 9731 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9732 if ( big_sync->big_handle == big_handle ) { 9733 return big_sync; 9734 } 9735 } 9736 return NULL; 9737 } 9738 9739 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9740 hci_stack->iso_packets_to_queue = num_packets; 9741 } 9742 9743 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9744 btstack_linked_list_iterator_t it; 9745 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9746 while (btstack_linked_list_iterator_has_next(&it)){ 9747 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9748 if ( cig->cig_id == cig_id ) { 9749 return cig; 9750 } 9751 } 9752 return NULL; 9753 } 9754 9755 static void hci_iso_notify_can_send_now(void){ 9756 9757 // BIG 9758 9759 btstack_linked_list_iterator_t it; 9760 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9761 while (btstack_linked_list_iterator_has_next(&it)){ 9762 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9763 // track number completed packet timestamps 9764 if (big->num_completed_timestamp_current_valid){ 9765 big->num_completed_timestamp_current_valid = false; 9766 if (big->num_completed_timestamp_previous_valid){ 9767 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9768 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9769 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9770 big->num_completed_timestamp_previous_ms); 9771 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9772 // to catch up, skip packet on all BIS 9773 uint8_t i; 9774 for (i=0;i<big->num_bis;i++){ 9775 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9776 if (iso_stream){ 9777 iso_stream->num_packets_to_skip++; 9778 } 9779 } 9780 } 9781 } 9782 big->num_completed_timestamp_previous_valid = true; 9783 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9784 } 9785 9786 if (big->can_send_now_requested){ 9787 // check if no outgoing iso packets pending and no can send now have to be emitted 9788 uint8_t i; 9789 bool can_send = true; 9790 uint8_t num_iso_queued_minimum = 0; 9791 for (i=0;i<big->num_bis;i++){ 9792 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9793 if (iso_stream == NULL) continue; 9794 // handle case where individual ISO packet was sent too late: 9795 // for each additionally queued packet, a new one needs to get skipped 9796 if (i==0){ 9797 num_iso_queued_minimum = iso_stream->num_packets_sent; 9798 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 9799 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 9800 iso_stream->num_packets_to_skip += num_packets_to_skip; 9801 iso_stream->num_packets_sent -= num_packets_to_skip; 9802 } 9803 // check if we can send now 9804 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 9805 can_send = false; 9806 break; 9807 } 9808 } 9809 if (can_send){ 9810 // propagate can send now to individual streams 9811 big->can_send_now_requested = false; 9812 for (i=0;i<big->num_bis;i++){ 9813 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9814 iso_stream->emit_ready_to_send = true; 9815 } 9816 } 9817 } 9818 } 9819 9820 if (hci_stack->hci_packet_buffer_reserved) return; 9821 9822 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9823 while (btstack_linked_list_iterator_has_next(&it)){ 9824 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9825 // report bis ready 9826 uint8_t i; 9827 for (i=0;i<big->num_bis;i++){ 9828 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9829 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9830 iso_stream->emit_ready_to_send = false; 9831 hci_emit_bis_can_send_now(big, i); 9832 break; 9833 } 9834 } 9835 } 9836 9837 // CIS 9838 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9839 while (btstack_linked_list_iterator_has_next(&it)) { 9840 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9841 if ((iso_stream->can_send_now_requested) && 9842 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 9843 iso_stream->can_send_now_requested = false; 9844 hci_emit_cis_can_send_now(iso_stream->cis_handle); 9845 } 9846 } 9847 } 9848 9849 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9850 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9851 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9852 } 9853 if (big_params->num_bis == 0){ 9854 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9855 } 9856 if (big_params->num_bis > MAX_NR_BIS){ 9857 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9858 } 9859 9860 // reserve ISO Streams 9861 uint8_t i; 9862 uint8_t status = ERROR_CODE_SUCCESS; 9863 for (i=0;i<big_params->num_bis;i++){ 9864 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_params->big_handle, i); 9865 if (iso_stream == NULL) { 9866 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 9867 break; 9868 } 9869 } 9870 9871 // free structs on error 9872 if (status != ERROR_CODE_SUCCESS){ 9873 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 9874 return status; 9875 } 9876 9877 le_audio_big_t * big = storage; 9878 big->big_handle = big_params->big_handle; 9879 big->params = big_params; 9880 big->state = LE_AUDIO_BIG_STATE_CREATE; 9881 big->num_bis = big_params->num_bis; 9882 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9883 9884 hci_run(); 9885 9886 return ERROR_CODE_SUCCESS; 9887 } 9888 9889 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9890 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9891 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9892 } 9893 if (big_sync_params->num_bis == 0){ 9894 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9895 } 9896 if (big_sync_params->num_bis > MAX_NR_BIS){ 9897 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9898 } 9899 9900 le_audio_big_sync_t * big_sync = storage; 9901 big_sync->big_handle = big_sync_params->big_handle; 9902 big_sync->params = big_sync_params; 9903 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9904 big_sync->num_bis = big_sync_params->num_bis; 9905 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9906 9907 hci_run(); 9908 9909 return ERROR_CODE_SUCCESS; 9910 } 9911 9912 uint8_t gap_big_terminate(uint8_t big_handle){ 9913 le_audio_big_t * big = hci_big_for_handle(big_handle); 9914 if (big == NULL){ 9915 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9916 } 9917 switch (big->state){ 9918 case LE_AUDIO_BIG_STATE_CREATE: 9919 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9920 hci_emit_big_terminated(big); 9921 break; 9922 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9923 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9924 break; 9925 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9926 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9927 case LE_AUDIO_BIG_STATE_ACTIVE: 9928 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9929 hci_run(); 9930 break; 9931 default: 9932 return ERROR_CODE_COMMAND_DISALLOWED; 9933 } 9934 return ERROR_CODE_SUCCESS; 9935 } 9936 9937 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9938 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9939 if (big_sync == NULL){ 9940 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9941 } 9942 switch (big_sync->state){ 9943 case LE_AUDIO_BIG_STATE_CREATE: 9944 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9945 hci_emit_big_sync_stopped(big_handle); 9946 break; 9947 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9948 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9949 break; 9950 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9951 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9952 case LE_AUDIO_BIG_STATE_ACTIVE: 9953 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 9954 hci_run(); 9955 break; 9956 default: 9957 return ERROR_CODE_COMMAND_DISALLOWED; 9958 } 9959 return ERROR_CODE_SUCCESS; 9960 } 9961 9962 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 9963 le_audio_big_t * big = hci_big_for_handle(big_handle); 9964 if (big == NULL){ 9965 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9966 } 9967 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 9968 return ERROR_CODE_COMMAND_DISALLOWED; 9969 } 9970 big->can_send_now_requested = true; 9971 hci_iso_notify_can_send_now(); 9972 return ERROR_CODE_SUCCESS; 9973 } 9974 9975 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 9976 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 9977 if (iso_stream == NULL){ 9978 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9979 } 9980 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 9981 return ERROR_CODE_COMMAND_DISALLOWED; 9982 } 9983 iso_stream->can_send_now_requested = true; 9984 hci_iso_notify_can_send_now(); 9985 return ERROR_CODE_SUCCESS; 9986 } 9987 9988 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 9989 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 9990 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9991 } 9992 if (cig_params->num_cis == 0){ 9993 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9994 } 9995 if (cig_params->num_cis > MAX_NR_BIS){ 9996 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9997 } 9998 9999 // reserve ISO Streams 10000 uint8_t i; 10001 uint8_t status = ERROR_CODE_SUCCESS; 10002 for (i=0;i<cig_params->num_cis;i++){ 10003 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10004 if (iso_stream != NULL) { 10005 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10006 break; 10007 } 10008 } 10009 10010 // free structs on error 10011 if (status != ERROR_CODE_SUCCESS){ 10012 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10013 return status; 10014 } 10015 10016 le_audio_cig_t * cig = storage; 10017 cig->cig_id = cig_params->cig_id; 10018 cig->num_cis = cig_params->num_cis; 10019 cig->params = cig_params; 10020 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10021 for (i=0;i<cig->num_cis;i++){ 10022 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10023 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10024 cig->cis_setup_active[i] = false; 10025 cig->cis_established[i] = false; 10026 } 10027 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10028 10029 hci_run(); 10030 10031 return ERROR_CODE_SUCCESS; 10032 } 10033 10034 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10035 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10036 if (cig == NULL){ 10037 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10038 } 10039 10040 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10041 return ERROR_CODE_COMMAND_DISALLOWED; 10042 } 10043 10044 // store ACL Connection Handles 10045 uint8_t i; 10046 for (i=0;i<cig->num_cis;i++){ 10047 // check that all con handles exit 10048 hci_con_handle_t cis_handle = cis_con_handles[i]; 10049 uint8_t j; 10050 bool found = false; 10051 for (j=0;j<cig->num_cis;j++){ 10052 if (cig->cis_con_handles[j] == cis_handle){ 10053 cig->acl_con_handles[j] = acl_con_handles[j]; 10054 found = true; 10055 break; 10056 } 10057 } 10058 if (!found){ 10059 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10060 } 10061 } 10062 10063 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10064 hci_run(); 10065 10066 return ERROR_CODE_SUCCESS; 10067 } 10068 10069 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10070 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10071 if (iso_stream == NULL){ 10072 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10073 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10074 } 10075 10076 // set next state and continue 10077 iso_stream->state = state; 10078 hci_run(); 10079 return ERROR_CODE_SUCCESS; 10080 } 10081 10082 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10083 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10084 } 10085 10086 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10087 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10088 } 10089 10090 10091 #endif 10092 #endif /* ENABLE_BLE */ 10093 10094 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10095 void hci_setup_test_connections_fuzz(void){ 10096 hci_connection_t * conn; 10097 10098 // default address: 66:55:44:33:00:01 10099 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10100 10101 // setup Controller info 10102 hci_stack->num_cmd_packets = 255; 10103 hci_stack->acl_packets_total_num = 255; 10104 10105 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10106 addr[5] = 0x01; 10107 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 10108 conn->con_handle = addr[5]; 10109 conn->role = HCI_ROLE_SLAVE; 10110 conn->state = RECEIVED_CONNECTION_REQUEST; 10111 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10112 10113 // setup incoming Classic SCO connection with con handle 0x0002 10114 addr[5] = 0x02; 10115 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 10116 conn->con_handle = addr[5]; 10117 conn->role = HCI_ROLE_SLAVE; 10118 conn->state = RECEIVED_CONNECTION_REQUEST; 10119 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10120 10121 // setup ready Classic ACL connection with con handle 0x0003 10122 addr[5] = 0x03; 10123 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 10124 conn->con_handle = addr[5]; 10125 conn->role = HCI_ROLE_SLAVE; 10126 conn->state = OPEN; 10127 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10128 10129 // setup ready Classic SCO connection with con handle 0x0004 10130 addr[5] = 0x04; 10131 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 10132 conn->con_handle = addr[5]; 10133 conn->role = HCI_ROLE_SLAVE; 10134 conn->state = OPEN; 10135 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10136 10137 // setup ready LE ACL connection with con handle 0x005 and public address 10138 addr[5] = 0x05; 10139 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 10140 conn->con_handle = addr[5]; 10141 conn->role = HCI_ROLE_SLAVE; 10142 conn->state = OPEN; 10143 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10144 conn->sm_connection.sm_connection_encrypted = 1; 10145 } 10146 10147 void hci_free_connections_fuzz(void){ 10148 btstack_linked_list_iterator_t it; 10149 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10150 while (btstack_linked_list_iterator_has_next(&it)){ 10151 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10152 btstack_linked_list_iterator_remove(&it); 10153 btstack_memory_hci_connection_free(con); 10154 } 10155 } 10156 void hci_simulate_working_fuzz(void){ 10157 hci_stack->le_scanning_param_update = false; 10158 hci_init_done(); 10159 hci_stack->num_cmd_packets = 255; 10160 } 10161 #endif 10162