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 status, uint8_t cig_id, uint8_t cis_id, hci_con_handle_t cis_con_handle, 257 hci_con_handle_t acl_con_handle); 258 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 259 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 260 #endif /* ENABLE_BLE */ 261 262 // the STACK is here 263 #ifndef HAVE_MALLOC 264 static hci_stack_t hci_stack_static; 265 #endif 266 static hci_stack_t * hci_stack = NULL; 267 268 #ifdef ENABLE_CLASSIC 269 // default name 270 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 271 272 // test helper 273 static uint8_t disable_l2cap_timeouts = 0; 274 #endif 275 276 // reset connection state on create and on reconnect 277 // don't overwrite addr, con handle, role 278 static void hci_connection_init(hci_connection_t * conn){ 279 conn->authentication_flags = AUTH_FLAG_NONE; 280 conn->bonding_flags = 0; 281 conn->requested_security_level = LEVEL_0; 282 #ifdef ENABLE_CLASSIC 283 conn->request_role = HCI_ROLE_INVALID; 284 conn->sniff_subrating_max_latency = 0xffff; 285 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 286 conn->link_key_type = INVALID_LINK_KEY; 287 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 288 btstack_run_loop_set_timer_context(&conn->timeout, conn); 289 hci_connection_timestamp(conn); 290 #endif 291 conn->acl_recombination_length = 0; 292 conn->acl_recombination_pos = 0; 293 conn->num_packets_sent = 0; 294 295 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 296 #ifdef ENABLE_BLE 297 conn->le_phy_update_all_phys = 0xff; 298 #endif 299 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 300 conn->le_max_tx_octets = 27; 301 #endif 302 #ifdef ENABLE_CLASSIC_PAIRING_OOB 303 conn->classic_oob_c_192 = NULL; 304 conn->classic_oob_r_192 = NULL; 305 conn->classic_oob_c_256 = NULL; 306 conn->classic_oob_r_256 = NULL; 307 #endif 308 } 309 310 /** 311 * create connection for given address 312 * 313 * @return connection OR NULL, if no memory left 314 */ 315 static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 316 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 317 318 hci_connection_t * conn = btstack_memory_hci_connection_get(); 319 if (!conn) return NULL; 320 hci_connection_init(conn); 321 322 bd_addr_copy(conn->address, addr); 323 conn->address_type = addr_type; 324 conn->con_handle = HCI_CON_HANDLE_INVALID; 325 conn->role = HCI_ROLE_INVALID; 326 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 327 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 328 #endif 329 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 330 331 return conn; 332 } 333 334 335 /** 336 * get le connection parameter range 337 * 338 * @return le connection parameter range struct 339 */ 340 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 341 *range = hci_stack->le_connection_parameter_range; 342 } 343 344 /** 345 * set le connection parameter range 346 * 347 */ 348 349 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 350 hci_stack->le_connection_parameter_range = *range; 351 } 352 353 /** 354 * @brief Test if connection parameters are inside in existing rage 355 * @param conn_interval_min (unit: 1.25ms) 356 * @param conn_interval_max (unit: 1.25ms) 357 * @param conn_latency 358 * @param supervision_timeout (unit: 10ms) 359 * @return 1 if included 360 */ 361 int gap_connection_parameter_range_included(le_connection_parameter_range_t * existing_range, uint16_t le_conn_interval_min, uint16_t le_conn_interval_max, uint16_t le_conn_latency, uint16_t le_supervision_timeout){ 362 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 363 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 364 365 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 366 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 367 368 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 369 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 370 371 return 1; 372 } 373 374 /** 375 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 376 * @note: default: 1 377 * @param max_peripheral_connections 378 */ 379 #ifdef ENABLE_LE_PERIPHERAL 380 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 381 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 382 } 383 #endif 384 385 /** 386 * get hci connections iterator 387 * 388 * @return hci connections iterator 389 */ 390 391 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 392 btstack_linked_list_iterator_init(it, &hci_stack->connections); 393 } 394 395 /** 396 * get connection for a given handle 397 * 398 * @return connection OR NULL, if not found 399 */ 400 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 401 btstack_linked_list_iterator_t it; 402 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 403 while (btstack_linked_list_iterator_has_next(&it)){ 404 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 405 if ( item->con_handle == con_handle ) { 406 return item; 407 } 408 } 409 return NULL; 410 } 411 412 /** 413 * get connection for given address 414 * 415 * @return connection OR NULL, if not found 416 */ 417 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 418 btstack_linked_list_iterator_t it; 419 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 420 while (btstack_linked_list_iterator_has_next(&it)){ 421 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 422 if (connection->address_type != addr_type) continue; 423 if (memcmp(addr, connection->address, 6) != 0) continue; 424 return connection; 425 } 426 return NULL; 427 } 428 429 #ifdef ENABLE_CLASSIC 430 431 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 432 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 433 } 434 435 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 436 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 437 } 438 439 #ifdef ENABLE_SCO_OVER_HCI 440 static int hci_number_sco_connections(void){ 441 int connections = 0; 442 btstack_linked_list_iterator_t it; 443 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 444 while (btstack_linked_list_iterator_has_next(&it)){ 445 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 446 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 447 connections++; 448 } 449 return connections; 450 } 451 #endif 452 453 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 454 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 455 #ifdef HAVE_EMBEDDED_TICK 456 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 457 // connections might be timed out 458 hci_emit_l2cap_check_timeout(connection); 459 } 460 #else 461 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 462 // connections might be timed out 463 hci_emit_l2cap_check_timeout(connection); 464 } 465 #endif 466 } 467 468 static void hci_connection_timestamp(hci_connection_t *connection){ 469 #ifdef HAVE_EMBEDDED_TICK 470 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 471 #else 472 connection->timestamp = btstack_run_loop_get_time_ms(); 473 #endif 474 } 475 476 /** 477 * add authentication flags and reset timer 478 * @note: assumes classic connection 479 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 480 */ 481 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 482 bd_addr_t addr; 483 reverse_bd_addr(bd_addr, addr); 484 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 485 if (conn) { 486 connectionSetAuthenticationFlags(conn, flags); 487 hci_connection_timestamp(conn); 488 } 489 } 490 491 static bool hci_pairing_active(hci_connection_t * hci_connection){ 492 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 493 } 494 495 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 496 if (hci_pairing_active(hci_connection)) return; 497 if (ssp){ 498 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 499 } else { 500 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 501 } 502 // if we are initiator, we have sent an HCI Authenticate Request 503 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 504 505 // if we are responder, use minimal service security level as required level 506 if (!initiator){ 507 hci_connection->requested_security_level = (gap_security_level_t) btstack_max((uint32_t) hci_connection->requested_security_level, (uint32_t) hci_stack->gap_minimal_service_security_level); 508 } 509 510 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 511 512 uint8_t event[12]; 513 event[0] = GAP_EVENT_PAIRING_STARTED; 514 event[1] = 10; 515 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 516 reverse_bd_addr(hci_connection->address, &event[4]); 517 event[10] = (uint8_t) ssp; 518 event[11] = (uint8_t) initiator; 519 hci_emit_event(event, sizeof(event), 1); 520 } 521 522 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 523 hci_connection->requested_security_level = LEVEL_0; 524 if (!hci_pairing_active(hci_connection)) return; 525 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 526 #ifdef ENABLE_CLASSIC_PAIRING_OOB 527 hci_connection->classic_oob_c_192 = NULL; 528 hci_connection->classic_oob_r_192 = NULL; 529 hci_connection->classic_oob_c_256 = NULL; 530 hci_connection->classic_oob_r_256 = NULL; 531 #endif 532 log_info("pairing complete, status %02x", status); 533 534 uint8_t event[11]; 535 event[0] = GAP_EVENT_PAIRING_COMPLETE; 536 event[1] = 9; 537 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 538 reverse_bd_addr(hci_connection->address, &event[4]); 539 event[10] = status; 540 hci_emit_event(event, sizeof(event), 1); 541 542 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 543 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 544 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 545 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 546 hci_connection->bonding_status = status; 547 } 548 } 549 550 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 551 hci_connection_t * conn = hci_connection_for_handle(handle); 552 if (!conn) return false; 553 return hci_pairing_active(conn); 554 } 555 556 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 557 if (!hci_stack->link_key_db) return; 558 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 559 hci_stack->link_key_db->delete_link_key(addr); 560 } 561 562 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 563 if (!hci_stack->link_key_db) return; 564 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 565 hci_stack->link_key_db->put_link_key(addr, link_key, type); 566 } 567 568 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 569 if (!hci_stack->link_key_db) return false; 570 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 571 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 572 return result; 573 } 574 575 void gap_delete_all_link_keys(void){ 576 bd_addr_t addr; 577 link_key_t link_key; 578 link_key_type_t type; 579 btstack_link_key_iterator_t it; 580 int ok = gap_link_key_iterator_init(&it); 581 if (!ok) { 582 log_error("could not initialize iterator"); 583 return; 584 } 585 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 586 gap_drop_link_key_for_bd_addr(addr); 587 } 588 gap_link_key_iterator_done(&it); 589 } 590 591 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 592 if (!hci_stack->link_key_db) return 0; 593 if (!hci_stack->link_key_db->iterator_init) return 0; 594 return hci_stack->link_key_db->iterator_init(it); 595 } 596 int gap_link_key_iterator_get_next(btstack_link_key_iterator_t * it, bd_addr_t bd_addr, link_key_t link_key, link_key_type_t * type){ 597 if (!hci_stack->link_key_db) return 0; 598 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 599 } 600 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 601 if (!hci_stack->link_key_db) return; 602 hci_stack->link_key_db->iterator_done(it); 603 } 604 #endif 605 606 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 607 switch (address_type){ 608 case BD_ADDR_TYPE_LE_PUBLIC: 609 case BD_ADDR_TYPE_LE_RANDOM: 610 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 611 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 612 return true; 613 default: 614 return false; 615 } 616 } 617 618 static int hci_is_le_connection(hci_connection_t * connection){ 619 return hci_is_le_connection_type(connection->address_type); 620 } 621 622 /** 623 * count connections 624 */ 625 static int nr_hci_connections(void){ 626 int count = 0; 627 btstack_linked_item_t *it; 628 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 629 count++; 630 } 631 return count; 632 } 633 634 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 635 636 unsigned int num_packets_sent_classic = 0; 637 unsigned int num_packets_sent_le = 0; 638 639 btstack_linked_item_t *it; 640 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 641 hci_connection_t * connection = (hci_connection_t *) it; 642 if (hci_is_le_connection(connection)){ 643 num_packets_sent_le += connection->num_packets_sent; 644 } 645 if (connection->address_type == BD_ADDR_TYPE_ACL){ 646 num_packets_sent_classic += connection->num_packets_sent; 647 } 648 } 649 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 650 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 651 int free_slots_le = 0; 652 653 if (free_slots_classic < 0){ 654 log_error("hci_number_free_acl_slots: outgoing classic packets (%u) > total classic packets (%u)", num_packets_sent_classic, hci_stack->acl_packets_total_num); 655 return 0; 656 } 657 658 if (hci_stack->le_acl_packets_total_num){ 659 // if we have LE slots, they are used 660 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 661 if (free_slots_le < 0){ 662 log_error("hci_number_free_acl_slots: outgoing le packets (%u) > total le packets (%u)", num_packets_sent_le, hci_stack->le_acl_packets_total_num); 663 return 0; 664 } 665 } else { 666 // otherwise, classic slots are used for LE, too 667 free_slots_classic -= num_packets_sent_le; 668 if (free_slots_classic < 0){ 669 log_error("hci_number_free_acl_slots: outgoing classic + le packets (%u + %u) > total packets (%u)", num_packets_sent_classic, num_packets_sent_le, hci_stack->acl_packets_total_num); 670 return 0; 671 } 672 } 673 674 switch (address_type){ 675 case BD_ADDR_TYPE_UNKNOWN: 676 log_error("hci_number_free_acl_slots: unknown address type"); 677 return 0; 678 679 case BD_ADDR_TYPE_ACL: 680 return (uint16_t) free_slots_classic; 681 682 default: 683 if (hci_stack->le_acl_packets_total_num > 0){ 684 return (uint16_t) free_slots_le; 685 } 686 return (uint16_t) free_slots_classic; 687 } 688 } 689 690 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 691 // get connection type 692 hci_connection_t * connection = hci_connection_for_handle(con_handle); 693 if (!connection){ 694 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 695 return 0; 696 } 697 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 698 } 699 700 #ifdef ENABLE_CLASSIC 701 static int hci_number_free_sco_slots(void){ 702 unsigned int num_sco_packets_sent = 0; 703 btstack_linked_item_t *it; 704 if (hci_stack->synchronous_flow_control_enabled){ 705 // explicit flow control 706 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 707 hci_connection_t * connection = (hci_connection_t *) it; 708 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 709 num_sco_packets_sent += connection->num_packets_sent; 710 } 711 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 712 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 713 return 0; 714 } 715 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 716 } else { 717 // implicit flow control -- TODO 718 int num_ready = 0; 719 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 720 hci_connection_t * connection = (hci_connection_t *) it; 721 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 722 if (connection->sco_tx_ready == 0) continue; 723 num_ready++; 724 } 725 return num_ready; 726 } 727 } 728 #endif 729 730 // only used to send HCI Host Number Completed Packets 731 static int hci_can_send_comand_packet_transport(void){ 732 if (hci_stack->hci_packet_buffer_reserved) return 0; 733 734 // check for async hci transport implementations 735 if (hci_stack->hci_transport->can_send_packet_now){ 736 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 737 return 0; 738 } 739 } 740 return 1; 741 } 742 743 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 744 bool hci_can_send_command_packet_now(void){ 745 if (hci_can_send_comand_packet_transport() == 0) return false; 746 return hci_stack->num_cmd_packets > 0u; 747 } 748 749 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 750 // check for async hci transport implementations 751 if (!hci_stack->hci_transport->can_send_packet_now) return true; 752 return hci_stack->hci_transport->can_send_packet_now(packet_type); 753 } 754 755 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 756 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 757 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 758 } 759 760 bool hci_can_send_acl_le_packet_now(void){ 761 if (hci_stack->hci_packet_buffer_reserved) return false; 762 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 763 } 764 765 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 766 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 767 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 768 } 769 770 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 771 if (hci_stack->hci_packet_buffer_reserved) return false; 772 return hci_can_send_prepared_acl_packet_now(con_handle); 773 } 774 775 #ifdef ENABLE_CLASSIC 776 bool hci_can_send_acl_classic_packet_now(void){ 777 if (hci_stack->hci_packet_buffer_reserved) return false; 778 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 779 } 780 781 bool hci_can_send_prepared_sco_packet_now(void){ 782 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 783 if (hci_have_usb_transport()){ 784 return hci_stack->sco_can_send_now; 785 } else { 786 return hci_number_free_sco_slots() > 0; 787 } 788 } 789 790 bool hci_can_send_sco_packet_now(void){ 791 if (hci_stack->hci_packet_buffer_reserved) return false; 792 return hci_can_send_prepared_sco_packet_now(); 793 } 794 795 void hci_request_sco_can_send_now_event(void){ 796 hci_stack->sco_waiting_for_can_send_now = 1; 797 hci_notify_if_sco_can_send_now(); 798 } 799 #endif 800 801 // used for internal checks in l2cap.c 802 bool hci_is_packet_buffer_reserved(void){ 803 return hci_stack->hci_packet_buffer_reserved; 804 } 805 806 // reserves outgoing packet buffer. 807 // @return 1 if successful 808 bool hci_reserve_packet_buffer(void){ 809 if (hci_stack->hci_packet_buffer_reserved) { 810 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 811 return false; 812 } 813 hci_stack->hci_packet_buffer_reserved = true; 814 return true; 815 } 816 817 void hci_release_packet_buffer(void){ 818 hci_stack->hci_packet_buffer_reserved = false; 819 } 820 821 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 822 static int hci_transport_synchronous(void){ 823 return hci_stack->hci_transport->can_send_packet_now == NULL; 824 } 825 826 // used for debugging 827 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 828 static void hci_controller_dump_packets(void){ 829 // format: "{handle:04x}:{count:02d} " 830 char summaries[3][7 * 8 + 1]; 831 uint16_t totals[3]; 832 uint8_t index; 833 for (index = 0 ; index < 3 ; index++){ 834 summaries[index][0] = 0; 835 totals[index] = 0; 836 } 837 btstack_linked_item_t *it; 838 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 839 hci_connection_t * connection = (hci_connection_t *) it; 840 switch (connection->address_type){ 841 case BD_ADDR_TYPE_ACL: 842 index = 0; 843 break; 844 case BD_ADDR_TYPE_SCO: 845 index = 2; 846 break; 847 default: 848 index = 1; 849 break; 850 } 851 totals[index] += connection->num_packets_sent; 852 char item_text[10]; 853 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 854 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 855 } 856 for (index = 0 ; index < 3 ; index++){ 857 if (summaries[index][0] == 0){ 858 summaries[index][0] = '-'; 859 summaries[index][1] = 0; 860 } 861 } 862 log_info("Controller ACL BR/EDR: %s total %u / LE: %s total %u / SCO: %s total %u", summaries[0], totals[0], summaries[1], totals[1], summaries[2], totals[2]); 863 } 864 #endif 865 866 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 867 868 // log_info("hci_send_acl_packet_fragments %u/%u (con 0x%04x)", hci_stack->acl_fragmentation_pos, hci_stack->acl_fragmentation_total_size, connection->con_handle); 869 870 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 871 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 872 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 873 max_acl_data_packet_length = hci_stack->le_data_packets_length; 874 } 875 876 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 877 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 878 max_acl_data_packet_length = connection->le_max_tx_octets; 879 } 880 #endif 881 882 log_debug("hci_send_acl_packet_fragments entered"); 883 884 uint8_t status = ERROR_CODE_SUCCESS; 885 // multiple packets could be send on a synchronous HCI transport 886 while (true){ 887 888 log_debug("hci_send_acl_packet_fragments loop entered"); 889 890 // get current data 891 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 892 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 893 bool more_fragments = false; 894 895 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 896 if (current_acl_data_packet_length > max_acl_data_packet_length){ 897 more_fragments = true; 898 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 899 } 900 901 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 902 if (acl_header_pos > 0u){ 903 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 904 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 905 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 906 } 907 908 // update header len 909 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 910 911 // count packet 912 connection->num_packets_sent++; 913 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 914 915 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 916 if (more_fragments){ 917 // update start of next fragment to send 918 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 919 } else { 920 // done 921 hci_stack->acl_fragmentation_pos = 0; 922 hci_stack->acl_fragmentation_total_size = 0; 923 } 924 925 // send packet 926 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 927 const int size = current_acl_data_packet_length + 4; 928 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 929 hci_stack->acl_fragmentation_tx_active = 1; 930 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 931 if (err != 0){ 932 // no error from HCI Transport expected 933 status = ERROR_CODE_HARDWARE_FAILURE; 934 } 935 936 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 937 hci_controller_dump_packets(); 938 #endif 939 940 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 941 942 // done yet? 943 if (!more_fragments) break; 944 945 // can send more? 946 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 947 } 948 949 log_debug("hci_send_acl_packet_fragments loop over"); 950 951 // release buffer now for synchronous transport 952 if (hci_transport_synchronous()){ 953 hci_stack->acl_fragmentation_tx_active = 0; 954 hci_release_packet_buffer(); 955 hci_emit_transport_packet_sent(); 956 } 957 958 return status; 959 } 960 961 // pre: caller has reserved the packet buffer 962 uint8_t hci_send_acl_packet_buffer(int size){ 963 btstack_assert(hci_stack->hci_packet_buffer_reserved); 964 965 uint8_t * packet = hci_stack->hci_packet_buffer; 966 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 967 968 // check for free places on Bluetooth module 969 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 970 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 971 hci_release_packet_buffer(); 972 hci_emit_transport_packet_sent(); 973 return BTSTACK_ACL_BUFFERS_FULL; 974 } 975 976 hci_connection_t *connection = hci_connection_for_handle( con_handle); 977 if (!connection) { 978 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 979 hci_release_packet_buffer(); 980 hci_emit_transport_packet_sent(); 981 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 982 } 983 984 #ifdef ENABLE_CLASSIC 985 hci_connection_timestamp(connection); 986 #endif 987 988 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 989 990 // setup data 991 hci_stack->acl_fragmentation_total_size = size; 992 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 993 994 return hci_send_acl_packet_fragments(connection); 995 } 996 997 #ifdef ENABLE_CLASSIC 998 // pre: caller has reserved the packet buffer 999 uint8_t hci_send_sco_packet_buffer(int size){ 1000 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1001 1002 uint8_t * packet = hci_stack->hci_packet_buffer; 1003 1004 // skip checks in loopback mode 1005 if (!hci_stack->loopback_mode){ 1006 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1007 1008 // check for free places on Bluetooth module 1009 if (!hci_can_send_prepared_sco_packet_now()) { 1010 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1011 hci_release_packet_buffer(); 1012 hci_emit_transport_packet_sent(); 1013 return BTSTACK_ACL_BUFFERS_FULL; 1014 } 1015 1016 // track send packet in connection struct 1017 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1018 if (!connection) { 1019 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1020 hci_release_packet_buffer(); 1021 hci_emit_transport_packet_sent(); 1022 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1023 } 1024 1025 if (hci_have_usb_transport()){ 1026 // token used 1027 hci_stack->sco_can_send_now = false; 1028 } else { 1029 if (hci_stack->synchronous_flow_control_enabled){ 1030 connection->num_packets_sent++; 1031 } else { 1032 connection->sco_tx_ready--; 1033 } 1034 } 1035 } 1036 1037 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1038 1039 #ifdef HAVE_SCO_TRANSPORT 1040 hci_stack->sco_transport->send_packet(packet, size); 1041 hci_release_packet_buffer(); 1042 hci_emit_transport_packet_sent(); 1043 1044 return 0; 1045 #else 1046 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1047 if (hci_transport_synchronous()){ 1048 hci_release_packet_buffer(); 1049 hci_emit_transport_packet_sent(); 1050 } 1051 1052 if (err != 0){ 1053 return ERROR_CODE_HARDWARE_FAILURE; 1054 } 1055 return ERROR_CODE_SUCCESS; 1056 #endif 1057 } 1058 #endif 1059 1060 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1061 static uint8_t hci_send_iso_packet_fragments(void){ 1062 1063 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1064 uint8_t status = ERROR_CODE_SUCCESS; 1065 // multiple packets could be send on a synchronous HCI transport 1066 while (true){ 1067 1068 // get current data 1069 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1070 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1071 bool more_fragments = false; 1072 1073 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1074 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1075 more_fragments = true; 1076 current_iso_data_packet_length = max_iso_data_packet_length; 1077 } 1078 1079 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1080 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1081 uint8_t pb_flags; 1082 if (iso_header_pos == 0u){ 1083 // first fragment, keep TS field 1084 pb_flags = more_fragments ? 0x00 : 0x02; 1085 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1086 } else { 1087 // later fragment, drop TS field 1088 pb_flags = more_fragments ? 0x01 : 0x03; 1089 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1090 } 1091 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1092 1093 // update header len 1094 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1095 1096 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1097 if (more_fragments){ 1098 // update start of next fragment to send 1099 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1100 } else { 1101 // done 1102 hci_stack->iso_fragmentation_pos = 0; 1103 hci_stack->iso_fragmentation_total_size = 0; 1104 } 1105 1106 // send packet 1107 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1108 const int size = current_iso_data_packet_length + 4; 1109 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1110 hci_stack->iso_fragmentation_tx_active = true; 1111 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1112 if (err != 0){ 1113 // no error from HCI Transport expected 1114 status = ERROR_CODE_HARDWARE_FAILURE; 1115 } 1116 1117 // done yet? 1118 if (!more_fragments) break; 1119 1120 // can send more? 1121 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1122 } 1123 1124 // release buffer now for synchronous transport 1125 if (hci_transport_synchronous()){ 1126 hci_stack->iso_fragmentation_tx_active = false; 1127 hci_release_packet_buffer(); 1128 hci_emit_transport_packet_sent(); 1129 } 1130 1131 return status; 1132 } 1133 1134 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1135 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1136 1137 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1138 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1139 if (iso_stream == NULL){ 1140 hci_release_packet_buffer(); 1141 hci_iso_notify_can_send_now(); 1142 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1143 } 1144 1145 // TODO: check for space on controller 1146 1147 // skip iso packets if needed 1148 if (iso_stream->num_packets_to_skip > 0){ 1149 iso_stream->num_packets_to_skip--; 1150 // pretend it was processed and trigger next one 1151 hci_release_packet_buffer(); 1152 hci_iso_notify_can_send_now(); 1153 return ERROR_CODE_SUCCESS; 1154 } 1155 1156 // track outgoing packet sent 1157 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1158 iso_stream->num_packets_sent++; 1159 1160 // setup data 1161 hci_stack->iso_fragmentation_total_size = size; 1162 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1163 1164 return hci_send_iso_packet_fragments(); 1165 } 1166 #endif 1167 1168 static void acl_handler(uint8_t *packet, uint16_t size){ 1169 1170 // get info 1171 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1172 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1173 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1174 uint16_t acl_length = READ_ACL_LENGTH(packet); 1175 1176 // ignore non-registered handle 1177 if (!conn){ 1178 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1179 return; 1180 } 1181 1182 // assert packet is complete 1183 if ((acl_length + 4u) != size){ 1184 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1185 return; 1186 } 1187 1188 #ifdef ENABLE_CLASSIC 1189 // update idle timestamp 1190 hci_connection_timestamp(conn); 1191 #endif 1192 1193 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1194 hci_stack->host_completed_packets = 1; 1195 conn->num_packets_completed++; 1196 #endif 1197 1198 // handle different packet types 1199 switch (acl_flags & 0x03u) { 1200 1201 case 0x01: // continuation fragment 1202 1203 // sanity checks 1204 if (conn->acl_recombination_pos == 0u) { 1205 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1206 return; 1207 } 1208 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1209 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1210 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1211 conn->acl_recombination_pos = 0; 1212 return; 1213 } 1214 1215 // append fragment payload (header already stored) 1216 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1217 &packet[4], acl_length); 1218 conn->acl_recombination_pos += acl_length; 1219 1220 // forward complete L2CAP packet if complete. 1221 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1222 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1223 // reset recombination buffer 1224 conn->acl_recombination_length = 0; 1225 conn->acl_recombination_pos = 0; 1226 } 1227 break; 1228 1229 case 0x02: { // first fragment 1230 1231 // sanity check 1232 if (conn->acl_recombination_pos) { 1233 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1234 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1235 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1236 } 1237 conn->acl_recombination_pos = 0; 1238 } 1239 1240 // peek into L2CAP packet! 1241 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1242 1243 // compare fragment size to L2CAP packet size 1244 if (acl_length >= (l2cap_length + 4u)){ 1245 // forward fragment as L2CAP packet 1246 hci_emit_acl_packet(packet, acl_length + 4u); 1247 } else { 1248 1249 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1250 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1251 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1252 return; 1253 } 1254 1255 // store first fragment and tweak acl length for complete package 1256 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1257 packet, acl_length + 4u); 1258 conn->acl_recombination_pos = acl_length + 4u; 1259 conn->acl_recombination_length = l2cap_length; 1260 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1261 } 1262 break; 1263 1264 } 1265 default: 1266 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1267 return; 1268 } 1269 1270 // execute main loop 1271 hci_run(); 1272 } 1273 1274 static void hci_connection_stop_timer(hci_connection_t * conn){ 1275 btstack_run_loop_remove_timer(&conn->timeout); 1276 #ifdef ENABLE_CLASSIC 1277 btstack_run_loop_remove_timer(&conn->timeout_sco); 1278 #endif 1279 } 1280 1281 static void hci_shutdown_connection(hci_connection_t *conn){ 1282 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1283 1284 #ifdef ENABLE_CLASSIC 1285 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1286 bd_addr_type_t addr_type = conn->address_type; 1287 #endif 1288 #ifdef HAVE_SCO_TRANSPORT 1289 hci_con_handle_t con_handle = conn->con_handle; 1290 #endif 1291 #endif 1292 1293 hci_connection_stop_timer(conn); 1294 1295 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1296 btstack_memory_hci_connection_free( conn ); 1297 1298 // now it's gone 1299 hci_emit_nr_connections_changed(); 1300 1301 #ifdef ENABLE_CLASSIC 1302 #ifdef ENABLE_SCO_OVER_HCI 1303 // update SCO 1304 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1305 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1306 } 1307 #endif 1308 #ifdef HAVE_SCO_TRANSPORT 1309 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1310 hci_stack->sco_transport->close(con_handle); 1311 } 1312 #endif 1313 #endif 1314 } 1315 1316 #ifdef ENABLE_CLASSIC 1317 1318 static const uint16_t packet_type_sizes[] = { 1319 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1320 HCI_ACL_DH1_SIZE, 0, 0, 0, 1321 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1322 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1323 }; 1324 static const uint8_t packet_type_feature_requirement_bit[] = { 1325 0, // 3 slot packets 1326 1, // 5 slot packets 1327 25, // EDR 2 mpbs 1328 26, // EDR 3 mbps 1329 39, // 3 slot EDR packts 1330 40, // 5 slot EDR packet 1331 }; 1332 static const uint16_t packet_type_feature_packet_mask[] = { 1333 0x0f00, // 3 slot packets 1334 0xf000, // 5 slot packets 1335 0x1102, // EDR 2 mpbs 1336 0x2204, // EDR 3 mbps 1337 0x0300, // 3 slot EDR packts 1338 0x3000, // 5 slot EDR packet 1339 }; 1340 1341 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1342 // enable packet types based on size 1343 uint16_t packet_types = 0; 1344 unsigned int i; 1345 for (i=0;i<16;i++){ 1346 if (packet_type_sizes[i] == 0) continue; 1347 if (packet_type_sizes[i] <= buffer_size){ 1348 packet_types |= 1 << i; 1349 } 1350 } 1351 // disable packet types due to missing local supported features 1352 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1353 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1354 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1355 if (feature_set) continue; 1356 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1357 packet_types &= ~packet_type_feature_packet_mask[i]; 1358 } 1359 // flip bits for "may not be used" 1360 packet_types ^= 0x3306; 1361 return packet_types; 1362 } 1363 1364 uint16_t hci_usable_acl_packet_types(void){ 1365 return hci_stack->packet_types; 1366 } 1367 #endif 1368 1369 uint8_t* hci_get_outgoing_packet_buffer(void){ 1370 // hci packet buffer is >= acl data packet length 1371 return hci_stack->hci_packet_buffer; 1372 } 1373 1374 uint16_t hci_max_acl_data_packet_length(void){ 1375 return hci_stack->acl_data_packet_length; 1376 } 1377 1378 #ifdef ENABLE_CLASSIC 1379 bool hci_extended_sco_link_supported(void){ 1380 // No. 31, byte 3, bit 7 1381 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1382 } 1383 #endif 1384 1385 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1386 // No. 54, byte 6, bit 6 1387 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1388 } 1389 1390 #ifdef ENABLE_CLASSIC 1391 static int gap_ssp_supported(void){ 1392 // No. 51, byte 6, bit 3 1393 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1394 } 1395 #endif 1396 1397 static int hci_classic_supported(void){ 1398 #ifdef ENABLE_CLASSIC 1399 // No. 37, byte 4, bit 5, = No BR/EDR Support 1400 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1401 #else 1402 return 0; 1403 #endif 1404 } 1405 1406 static int hci_le_supported(void){ 1407 #ifdef ENABLE_BLE 1408 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1409 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1410 #else 1411 return 0; 1412 #endif 1413 } 1414 1415 static bool hci_command_supported(uint8_t command_index){ 1416 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1417 } 1418 1419 #ifdef ENABLE_BLE 1420 1421 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1422 static bool hci_extended_advertising_supported(void){ 1423 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1424 } 1425 #endif 1426 1427 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1428 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1429 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1430 } else { 1431 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1432 } 1433 } 1434 1435 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1436 *addr_type = hci_stack->le_own_addr_type; 1437 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1438 } 1439 1440 #ifdef ENABLE_LE_PERIPHERAL 1441 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1442 *addr_type = hci_stack->le_advertisements_own_addr_type; 1443 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1444 }; 1445 #endif 1446 1447 #ifdef ENABLE_LE_CENTRAL 1448 1449 /** 1450 * @brief Get own addr type and address used for LE connections (Central) 1451 */ 1452 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1453 *addr_type = hci_stack->le_connection_own_addr_type; 1454 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1455 } 1456 1457 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1458 1459 uint16_t offset = 3; 1460 uint8_t num_reports = packet[offset]; 1461 offset += 1; 1462 1463 uint16_t i; 1464 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1465 for (i=0; (i<num_reports) && (offset < size);i++){ 1466 // sanity checks on data_length: 1467 uint8_t data_length = packet[offset + 8]; 1468 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1469 if ((offset + 9u + data_length + 1u) > size) return; 1470 // setup event 1471 uint8_t event_size = 10u + data_length; 1472 uint16_t pos = 0; 1473 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1474 event[pos++] = event_size; 1475 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1476 offset += 8; 1477 pos += 8; 1478 event[pos++] = packet[offset + 1 + data_length]; // rssi 1479 event[pos++] = data_length; 1480 offset++; 1481 (void)memcpy(&event[pos], &packet[offset], data_length); 1482 pos += data_length; 1483 offset += data_length + 1u; // rssi 1484 hci_emit_event(event, pos, 1); 1485 } 1486 } 1487 1488 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1489 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1490 uint16_t offset = 3; 1491 uint8_t num_reports = packet[offset++]; 1492 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1493 uint8_t i; 1494 for (i=0; (i<num_reports) && (offset < size);i++){ 1495 // sanity checks on data_length: 1496 uint16_t data_length = packet[offset + 23]; 1497 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1498 if ((offset + 24u + data_length) > size) return; 1499 uint16_t event_type = little_endian_read_16(packet, offset); 1500 offset += 2; 1501 if ((event_type & 0x10) != 0) { 1502 // setup legacy event 1503 uint8_t legacy_event_type; 1504 switch (event_type){ 1505 case 0b0010011: 1506 // ADV_IND 1507 legacy_event_type = 0; 1508 break; 1509 case 0b0010101: 1510 // ADV_DIRECT_IND 1511 legacy_event_type = 1; 1512 break; 1513 case 0b0010010: 1514 // ADV_SCAN_IND 1515 legacy_event_type = 2; 1516 break; 1517 case 0b0010000: 1518 // ADV_NONCONN_IND 1519 legacy_event_type = 3; 1520 break; 1521 case 0b0011011: 1522 case 0b0011010: 1523 // SCAN_RSP 1524 legacy_event_type = 4; 1525 break; 1526 default: 1527 legacy_event_type = 0; 1528 break; 1529 } 1530 uint16_t pos = 0; 1531 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1532 event[pos++] = 10u + data_length; 1533 event[pos++] = legacy_event_type; 1534 // copy address type + address 1535 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1536 offset += 7; 1537 pos += 7; 1538 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1539 offset += 4; 1540 // copy rssi 1541 event[pos++] = packet[offset++]; 1542 // skip periodic advertising interval and direct address 1543 offset += 9; 1544 // copy data len + data; 1545 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1546 pos += 1 +data_length; 1547 offset += 1+ data_length; 1548 hci_emit_event(event, pos, 1); 1549 } else { 1550 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1551 uint8_t report_len = 24 + data_length; 1552 event[1] = report_len; 1553 little_endian_store_16(event, 2, event_type); 1554 memcpy(&event[4], &packet[offset], report_len); 1555 offset += report_len; 1556 hci_emit_event(event, 2 + report_len, 1); 1557 } 1558 } 1559 } 1560 #endif 1561 1562 #endif 1563 #endif 1564 1565 #ifdef ENABLE_BLE 1566 #ifdef ENABLE_LE_PERIPHERAL 1567 static void hci_update_advertisements_enabled_for_current_roles(void){ 1568 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1569 // get number of active le slave connections 1570 int num_slave_connections = 0; 1571 btstack_linked_list_iterator_t it; 1572 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1573 while (btstack_linked_list_iterator_has_next(&it)){ 1574 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1575 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1576 if (con->state != OPEN) continue; 1577 if (con->role != HCI_ROLE_SLAVE) continue; 1578 if (!hci_is_le_connection(con)) continue; 1579 num_slave_connections++; 1580 } 1581 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1582 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1583 } else { 1584 hci_stack->le_advertisements_enabled_for_current_roles = false; 1585 } 1586 } 1587 #endif 1588 #endif 1589 1590 #ifdef ENABLE_CLASSIC 1591 static void gap_run_set_local_name(void){ 1592 hci_reserve_packet_buffer(); 1593 uint8_t * packet = hci_stack->hci_packet_buffer; 1594 // construct HCI Command and send 1595 uint16_t opcode = hci_write_local_name.opcode; 1596 hci_stack->last_cmd_opcode = opcode; 1597 packet[0] = opcode & 0xff; 1598 packet[1] = opcode >> 8; 1599 packet[2] = DEVICE_NAME_LEN; 1600 memset(&packet[3], 0, DEVICE_NAME_LEN); 1601 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1602 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1603 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1604 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1605 // expand '00:00:00:00:00:00' in name with bd_addr 1606 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1607 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1608 } 1609 1610 static void gap_run_set_eir_data(void){ 1611 hci_reserve_packet_buffer(); 1612 uint8_t * packet = hci_stack->hci_packet_buffer; 1613 // construct HCI Command in-place and send 1614 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1615 hci_stack->last_cmd_opcode = opcode; 1616 uint16_t offset = 0; 1617 packet[offset++] = opcode & 0xff; 1618 packet[offset++] = opcode >> 8; 1619 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1620 packet[offset++] = 0; // FEC not required 1621 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1622 if (hci_stack->eir_data){ 1623 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1624 ad_context_t context; 1625 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1626 uint8_t data_type = ad_iterator_get_data_type(&context); 1627 uint8_t size = ad_iterator_get_data_len(&context); 1628 const uint8_t *data = ad_iterator_get_data(&context); 1629 // copy item 1630 packet[offset++] = size + 1; 1631 packet[offset++] = data_type; 1632 memcpy(&packet[offset], data, size); 1633 // update name item 1634 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1635 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1636 } 1637 offset += size; 1638 } 1639 } else { 1640 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1641 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1642 packet[offset++] = bytes_to_copy + 1; 1643 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1644 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1645 // expand '00:00:00:00:00:00' in name with bd_addr 1646 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1647 } 1648 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1649 } 1650 1651 static void hci_run_gap_tasks_classic(void){ 1652 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1653 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1654 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1655 return; 1656 } 1657 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1658 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1659 gap_run_set_local_name(); 1660 return; 1661 } 1662 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1663 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1664 gap_run_set_eir_data(); 1665 return; 1666 } 1667 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1668 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1669 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1670 return; 1671 } 1672 // write page scan activity 1673 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1674 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1675 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1676 return; 1677 } 1678 // write page scan type 1679 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1680 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1681 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1682 return; 1683 } 1684 // write page timeout 1685 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1686 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1687 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1688 return; 1689 } 1690 // send scan enable 1691 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1692 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1693 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1694 return; 1695 } 1696 // send write scan activity 1697 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1698 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1699 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1700 return; 1701 } 1702 } 1703 #endif 1704 1705 #ifndef HAVE_HOST_CONTROLLER_API 1706 1707 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1708 if (!hci_stack->config) return 0; 1709 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1710 // Limit baud rate for Broadcom chipsets to 3 mbps 1711 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1712 baud_rate = 3000000; 1713 } 1714 return baud_rate; 1715 } 1716 1717 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1718 UNUSED(ds); 1719 1720 switch (hci_stack->substate){ 1721 case HCI_INIT_W4_SEND_RESET: 1722 log_info("Resend HCI Reset"); 1723 hci_stack->substate = HCI_INIT_SEND_RESET; 1724 hci_stack->num_cmd_packets = 1; 1725 hci_run(); 1726 break; 1727 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1728 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1729 if (hci_stack->hci_transport->reset_link){ 1730 hci_stack->hci_transport->reset_link(); 1731 } 1732 1733 /* fall through */ 1734 1735 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1736 log_info("Resend HCI Reset - CSR Warm Boot"); 1737 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1738 hci_stack->num_cmd_packets = 1; 1739 hci_run(); 1740 break; 1741 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1742 if (hci_stack->hci_transport->set_baudrate){ 1743 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1744 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1745 hci_stack->hci_transport->set_baudrate(baud_rate); 1746 } 1747 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1748 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1749 if (hci_stack->hci_transport->reset_link){ 1750 log_info("Link Reset"); 1751 hci_stack->hci_transport->reset_link(); 1752 } 1753 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1754 hci_run(); 1755 } 1756 break; 1757 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1758 // otherwise continue 1759 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1760 hci_send_cmd(&hci_read_local_supported_commands); 1761 break; 1762 default: 1763 break; 1764 } 1765 } 1766 #endif 1767 1768 static void hci_initializing_next_state(void){ 1769 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1770 } 1771 1772 static void hci_init_done(void){ 1773 // done. tell the app 1774 log_info("hci_init_done -> HCI_STATE_WORKING"); 1775 hci_stack->state = HCI_STATE_WORKING; 1776 hci_emit_state(); 1777 } 1778 1779 // assumption: hci_can_send_command_packet_now() == true 1780 static void hci_initializing_run(void){ 1781 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1782 1783 if (!hci_can_send_command_packet_now()) return; 1784 1785 #ifndef HAVE_HOST_CONTROLLER_API 1786 bool need_baud_change = hci_stack->config 1787 && hci_stack->chipset 1788 && hci_stack->chipset->set_baudrate_command 1789 && hci_stack->hci_transport->set_baudrate 1790 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1791 #endif 1792 1793 switch (hci_stack->substate){ 1794 case HCI_INIT_SEND_RESET: 1795 hci_state_reset(); 1796 1797 #ifndef HAVE_HOST_CONTROLLER_API 1798 // prepare reset if command complete not received in 100ms 1799 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1800 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1801 btstack_run_loop_add_timer(&hci_stack->timeout); 1802 #endif 1803 // send command 1804 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1805 hci_send_cmd(&hci_reset); 1806 break; 1807 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1808 hci_send_cmd(&hci_read_local_version_information); 1809 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1810 break; 1811 1812 #ifndef HAVE_HOST_CONTROLLER_API 1813 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1814 hci_state_reset(); 1815 // prepare reset if command complete not received in 100ms 1816 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1817 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1818 btstack_run_loop_add_timer(&hci_stack->timeout); 1819 // send command 1820 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1821 hci_send_cmd(&hci_reset); 1822 break; 1823 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1824 hci_state_reset(); 1825 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1826 hci_send_cmd(&hci_reset); 1827 break; 1828 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1829 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1830 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1831 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1832 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1833 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1834 break; 1835 } 1836 case HCI_INIT_SET_BD_ADDR: 1837 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1838 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1839 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1840 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1841 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1842 break; 1843 case HCI_INIT_SEND_READ_LOCAL_NAME: 1844 #ifdef ENABLE_CLASSIC 1845 hci_send_cmd(&hci_read_local_name); 1846 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1847 break; 1848 #endif 1849 /* fall through */ 1850 1851 case HCI_INIT_SEND_BAUD_CHANGE: 1852 if (need_baud_change) { 1853 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1854 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1855 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1856 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1857 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1858 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1859 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1860 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1861 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1862 btstack_run_loop_add_timer(&hci_stack->timeout); 1863 } 1864 break; 1865 } 1866 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1867 1868 /* fall through */ 1869 1870 case HCI_INIT_CUSTOM_INIT: 1871 case HCI_INIT_CUSTOM_PRE_INIT: 1872 // Custom initialization 1873 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1874 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1875 bool send_cmd = false; 1876 switch (hci_stack->chipset_result){ 1877 case BTSTACK_CHIPSET_VALID_COMMAND: 1878 send_cmd = true; 1879 switch (hci_stack->substate){ 1880 case HCI_INIT_CUSTOM_INIT: 1881 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1882 break; 1883 case HCI_INIT_CUSTOM_PRE_INIT: 1884 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1885 break; 1886 default: 1887 btstack_assert(false); 1888 break; 1889 } 1890 break; 1891 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1892 send_cmd = true; 1893 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1894 log_info("CSR Warm Boot"); 1895 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1896 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1897 btstack_run_loop_add_timer(&hci_stack->timeout); 1898 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1899 && hci_stack->config 1900 && hci_stack->chipset 1901 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1902 && hci_stack->hci_transport->set_baudrate 1903 && hci_transport_uart_get_main_baud_rate()){ 1904 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1905 } else { 1906 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1907 } 1908 break; 1909 default: 1910 break; 1911 } 1912 1913 if (send_cmd){ 1914 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1915 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1916 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1917 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1918 break; 1919 } 1920 log_info("Init script done"); 1921 1922 // Custom Pre-Init complete, start regular init with HCI Reset 1923 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 1924 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1925 hci_send_cmd(&hci_reset); 1926 break; 1927 } 1928 1929 // Init script download on Broadcom chipsets causes: 1930 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1931 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1932 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1933 1934 // - baud rate to reset, restore UART baud rate if needed 1935 if (need_baud_change) { 1936 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1937 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1938 hci_stack->hci_transport->set_baudrate(baud_rate); 1939 } 1940 1941 uint16_t bcm_delay_ms = 300; 1942 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1943 // -> Work around: wait here. 1944 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1945 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1946 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1947 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1948 btstack_run_loop_add_timer(&hci_stack->timeout); 1949 break; 1950 } 1951 } 1952 #endif 1953 /* fall through */ 1954 1955 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1956 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1957 hci_send_cmd(&hci_read_local_supported_commands); 1958 break; 1959 case HCI_INIT_READ_BD_ADDR: 1960 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1961 hci_send_cmd(&hci_read_bd_addr); 1962 break; 1963 case HCI_INIT_READ_BUFFER_SIZE: 1964 // only read buffer size if supported 1965 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1966 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1967 hci_send_cmd(&hci_read_buffer_size); 1968 break; 1969 } 1970 1971 /* fall through */ 1972 1973 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1974 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1975 hci_send_cmd(&hci_read_local_supported_features); 1976 break; 1977 1978 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1979 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1980 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1981 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1982 break; 1983 case HCI_INIT_HOST_BUFFER_SIZE: 1984 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1985 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1986 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1987 break; 1988 #endif 1989 1990 case HCI_INIT_SET_EVENT_MASK: 1991 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1992 if (hci_le_supported()){ 1993 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1994 } else { 1995 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1996 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1997 } 1998 break; 1999 2000 case HCI_INIT_SET_EVENT_MASK_2: 2001 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2002 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2003 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2004 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2005 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2006 // Encryption Change Event v2 - bit 25 2007 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2008 break; 2009 } 2010 2011 #ifdef ENABLE_CLASSIC 2012 /* fall through */ 2013 2014 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2015 if (hci_classic_supported() && gap_ssp_supported()){ 2016 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2017 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2018 break; 2019 } 2020 2021 /* fall through */ 2022 2023 case HCI_INIT_WRITE_INQUIRY_MODE: 2024 if (hci_classic_supported()){ 2025 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2026 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2027 break; 2028 } 2029 2030 /* fall through */ 2031 2032 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2033 // skip write secure connections host support if not supported or disabled 2034 if (hci_classic_supported() && hci_stack->secure_connections_enable 2035 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2036 hci_stack->secure_connections_active = true; 2037 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2038 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2039 break; 2040 } 2041 2042 /* fall through */ 2043 2044 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2045 // skip set min encryption key size 2046 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2047 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2048 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2049 break; 2050 } 2051 2052 #ifdef ENABLE_SCO_OVER_HCI 2053 /* fall through */ 2054 2055 // only sent if ENABLE_SCO_OVER_HCI is defined 2056 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2057 // skip write synchronous flow control if not supported 2058 if (hci_classic_supported() 2059 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2060 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2061 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2062 break; 2063 } 2064 /* fall through */ 2065 2066 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2067 // skip write default erroneous data reporting if not supported 2068 if (hci_classic_supported() 2069 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2070 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2071 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2072 break; 2073 } 2074 #endif 2075 2076 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2077 /* fall through */ 2078 2079 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2080 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2081 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2082 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2083 #ifdef ENABLE_SCO_OVER_HCI 2084 log_info("BCM: Route SCO data via HCI transport"); 2085 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2086 #endif 2087 #ifdef ENABLE_SCO_OVER_PCM 2088 log_info("BCM: Route SCO data via PCM interface"); 2089 #ifdef ENABLE_BCM_PCM_WBS 2090 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2091 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2092 #else 2093 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2094 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2095 #endif 2096 #endif 2097 break; 2098 } 2099 #endif 2100 2101 #ifdef ENABLE_SCO_OVER_PCM 2102 /* fall through */ 2103 2104 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2105 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2106 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2107 log_info("BCM: Config PCM interface for I2S"); 2108 #ifdef ENABLE_BCM_PCM_WBS 2109 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2110 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2111 #else 2112 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2113 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2114 #endif 2115 break; 2116 } 2117 #endif 2118 #endif 2119 2120 #ifdef ENABLE_BLE 2121 /* fall through */ 2122 2123 // LE INIT 2124 case HCI_INIT_LE_READ_BUFFER_SIZE: 2125 if (hci_le_supported()){ 2126 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2127 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2128 hci_send_cmd(&hci_le_read_buffer_size_v2); 2129 } else { 2130 hci_send_cmd(&hci_le_read_buffer_size); 2131 } 2132 break; 2133 } 2134 2135 /* fall through */ 2136 2137 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2138 // skip write le host if not supported (e.g. on LE only EM9301) 2139 if (hci_le_supported() 2140 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2141 // LE Supported Host = 1, Simultaneous Host = 0 2142 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2143 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2144 break; 2145 } 2146 2147 /* fall through */ 2148 2149 case HCI_INIT_LE_SET_EVENT_MASK: 2150 if (hci_le_supported()){ 2151 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2152 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2153 break; 2154 } 2155 #endif 2156 2157 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2158 /* fall through */ 2159 2160 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2161 if (hci_le_supported() 2162 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2163 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2164 hci_send_cmd(&hci_le_read_maximum_data_length); 2165 break; 2166 } 2167 2168 /* fall through */ 2169 2170 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2171 if (hci_le_supported() 2172 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2173 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2174 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2175 break; 2176 } 2177 #endif 2178 2179 #ifdef ENABLE_LE_CENTRAL 2180 /* fall through */ 2181 2182 case HCI_INIT_READ_WHITE_LIST_SIZE: 2183 if (hci_le_supported()){ 2184 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2185 hci_send_cmd(&hci_le_read_white_list_size); 2186 break; 2187 } 2188 2189 #endif 2190 2191 #ifdef ENABLE_LE_PERIPHERAL 2192 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2193 /* fall through */ 2194 2195 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2196 if (hci_extended_advertising_supported()){ 2197 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2198 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2199 break; 2200 } 2201 #endif 2202 #endif 2203 /* fall through */ 2204 2205 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2206 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2207 if (hci_le_supported()) { 2208 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2209 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2210 break; 2211 } 2212 #endif 2213 2214 /* fall through */ 2215 2216 case HCI_INIT_DONE: 2217 hci_stack->substate = HCI_INIT_DONE; 2218 // main init sequence complete 2219 #ifdef ENABLE_CLASSIC 2220 // check if initial Classic GAP Tasks are completed 2221 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2222 hci_run_gap_tasks_classic(); 2223 break; 2224 } 2225 #endif 2226 #ifdef ENABLE_BLE 2227 #ifdef ENABLE_LE_CENTRAL 2228 // check if initial LE GAP Tasks are completed 2229 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2230 hci_run_general_gap_le(); 2231 break; 2232 } 2233 #endif 2234 #endif 2235 hci_init_done(); 2236 break; 2237 2238 default: 2239 return; 2240 } 2241 } 2242 2243 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2244 bool command_completed = false; 2245 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2246 uint16_t opcode = little_endian_read_16(packet,3); 2247 if (opcode == hci_stack->last_cmd_opcode){ 2248 command_completed = true; 2249 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2250 } else { 2251 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2252 } 2253 } 2254 2255 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2256 uint8_t status = packet[2]; 2257 uint16_t opcode = little_endian_read_16(packet,4); 2258 if (opcode == hci_stack->last_cmd_opcode){ 2259 if (status){ 2260 command_completed = true; 2261 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2262 } else { 2263 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2264 } 2265 } else { 2266 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2267 } 2268 } 2269 #ifndef HAVE_HOST_CONTROLLER_API 2270 // Vendor == CSR 2271 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2272 // TODO: track actual command 2273 command_completed = true; 2274 } 2275 2276 // Vendor == Toshiba 2277 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2278 // TODO: track actual command 2279 command_completed = true; 2280 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2281 hci_stack->num_cmd_packets = 1; 2282 } 2283 #endif 2284 2285 return command_completed; 2286 } 2287 2288 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2289 2290 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2291 2292 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2293 2294 #ifndef HAVE_HOST_CONTROLLER_API 2295 2296 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2297 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2298 // 2299 // HCI Reset 2300 // Timeout 100 ms 2301 // HCI Reset 2302 // Command Complete Reset 2303 // HCI Read Local Version Information 2304 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2305 // hang... 2306 // 2307 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2308 if (!command_completed 2309 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2310 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2311 2312 uint16_t opcode = little_endian_read_16(packet,3); 2313 if (opcode == hci_reset.opcode){ 2314 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2315 return; 2316 } 2317 } 2318 2319 // CSR & H5 2320 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2321 if (!command_completed 2322 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2323 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2324 2325 uint16_t opcode = little_endian_read_16(packet,3); 2326 if (opcode == hci_reset.opcode){ 2327 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2328 return; 2329 } 2330 } 2331 2332 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2333 // fix: Correct substate and behave as command below 2334 if (command_completed){ 2335 switch (hci_stack->substate){ 2336 case HCI_INIT_SEND_RESET: 2337 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2338 break; 2339 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2340 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2341 break; 2342 default: 2343 break; 2344 } 2345 } 2346 2347 #endif 2348 2349 if (!command_completed) return; 2350 2351 bool need_baud_change = false; 2352 bool need_addr_change = false; 2353 2354 #ifndef HAVE_HOST_CONTROLLER_API 2355 need_baud_change = hci_stack->config 2356 && hci_stack->chipset 2357 && hci_stack->chipset->set_baudrate_command 2358 && hci_stack->hci_transport->set_baudrate 2359 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2360 2361 need_addr_change = hci_stack->custom_bd_addr_set 2362 && hci_stack->chipset 2363 && hci_stack->chipset->set_bd_addr_command; 2364 #endif 2365 2366 switch(hci_stack->substate){ 2367 2368 #ifndef HAVE_HOST_CONTROLLER_API 2369 case HCI_INIT_SEND_RESET: 2370 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2371 // fix: just correct substate and behave as command below 2372 2373 /* fall through */ 2374 #endif 2375 2376 case HCI_INIT_W4_SEND_RESET: 2377 btstack_run_loop_remove_timer(&hci_stack->timeout); 2378 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2379 return; 2380 2381 #ifndef HAVE_HOST_CONTROLLER_API 2382 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2383 // for STLC2500D, baud rate change already happened. 2384 // for others, baud rate gets changed now 2385 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2386 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2387 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2388 hci_stack->hci_transport->set_baudrate(baud_rate); 2389 } 2390 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2391 return; 2392 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2393 btstack_run_loop_remove_timer(&hci_stack->timeout); 2394 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2395 return; 2396 case HCI_INIT_W4_CUSTOM_INIT: 2397 // repeat custom init 2398 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2399 return; 2400 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2401 // repeat custom init 2402 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2403 return; 2404 #endif 2405 2406 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2407 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2408 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2409 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2410 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2411 return; 2412 } 2413 if (need_addr_change){ 2414 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2415 return; 2416 } 2417 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2418 return; 2419 #ifndef HAVE_HOST_CONTROLLER_API 2420 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2421 if (need_baud_change){ 2422 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2423 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2424 hci_stack->hci_transport->set_baudrate(baud_rate); 2425 } 2426 if (need_addr_change){ 2427 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2428 return; 2429 } 2430 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2431 return; 2432 case HCI_INIT_W4_SET_BD_ADDR: 2433 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2434 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2435 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2436 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2437 return; 2438 } 2439 // skipping st warm boot 2440 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2441 return; 2442 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2443 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2444 return; 2445 #endif 2446 2447 case HCI_INIT_DONE: 2448 // set state if we came here by fall through 2449 hci_stack->substate = HCI_INIT_DONE; 2450 return; 2451 2452 default: 2453 break; 2454 } 2455 hci_initializing_next_state(); 2456 } 2457 2458 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2459 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2460 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2461 // check if we have been aware of the HCI connection 2462 switch (conn->state){ 2463 case SENT_CREATE_CONNECTION: 2464 case RECEIVED_CONNECTION_REQUEST: 2465 case ACCEPTED_CONNECTION_REQUEST: 2466 break; 2467 default: 2468 return; 2469 } 2470 2471 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2472 bd_addr_t bd_address; 2473 (void)memcpy(&bd_address, conn->address, 6); 2474 2475 #ifdef ENABLE_CLASSIC 2476 // cache needed data 2477 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2478 #endif 2479 2480 // connection failed, remove entry 2481 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2482 btstack_memory_hci_connection_free( conn ); 2483 2484 #ifdef ENABLE_CLASSIC 2485 // notify client if dedicated bonding 2486 if (notify_dedicated_bonding_failed){ 2487 log_info("hci notify_dedicated_bonding_failed"); 2488 hci_emit_dedicated_bonding_result(bd_address, status); 2489 } 2490 2491 // if authentication error, also delete link key 2492 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2493 gap_drop_link_key_for_bd_addr(bd_address); 2494 } 2495 #else 2496 UNUSED(status); 2497 #endif 2498 } 2499 2500 #ifdef ENABLE_CLASSIC 2501 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2502 // SSP Controller 2503 if (features[6] & (1 << 3)){ 2504 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2505 } 2506 // eSCO 2507 if (features[3] & (1<<7)){ 2508 conn->remote_supported_features[0] |= 1; 2509 } 2510 // Extended features 2511 if (features[7] & (1<<7)){ 2512 conn->remote_supported_features[0] |= 2; 2513 } 2514 } 2515 2516 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2517 // SSP Host 2518 if (features[0] & (1 << 0)){ 2519 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2520 } 2521 // SC Host 2522 if (features[0] & (1 << 3)){ 2523 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2524 } 2525 } 2526 2527 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2528 // SC Controller 2529 if (features[1] & (1 << 0)){ 2530 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2531 } 2532 } 2533 2534 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2535 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2536 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2537 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2538 if (conn->bonding_flags & BONDING_DEDICATED){ 2539 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2540 } 2541 } 2542 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2543 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2544 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2545 } 2546 2547 #endif 2548 2549 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2550 // handle BT initialization 2551 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2552 hci_initializing_event_handler(packet, size); 2553 } 2554 2555 // help with BT sleep 2556 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2557 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2558 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2559 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2560 hci_initializing_next_state(); 2561 } 2562 } 2563 2564 #ifdef ENABLE_CLASSIC 2565 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2566 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2567 conn->encryption_key_size = encryption_key_size; 2568 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2569 2570 // trigger disconnect for dedicated bonding, skip emit security level as disconnect is pending 2571 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2572 conn->bonding_flags &= ~BONDING_DEDICATED; 2573 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2574 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2575 return; 2576 } 2577 2578 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2579 conn->requested_security_level = LEVEL_0; 2580 hci_emit_security_level(conn->con_handle, security_level); 2581 return; 2582 } 2583 2584 // Request remote features if not already done 2585 hci_trigger_remote_features_for_connection(conn); 2586 2587 // Request Authentication if not already done 2588 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2589 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2590 } 2591 #endif 2592 2593 static void hci_store_local_supported_commands(const uint8_t * packet){ 2594 // create mapping table 2595 #define X(name, offset, bit) { offset, bit }, 2596 static struct { 2597 uint8_t byte_offset; 2598 uint8_t bit_position; 2599 } supported_hci_commands_map [] = { 2600 SUPPORTED_HCI_COMMANDS 2601 }; 2602 #undef X 2603 2604 // create names for debug purposes 2605 #ifdef ENABLE_LOG_DEBUG 2606 #define X(name, offset, bit) #name, 2607 static const char * command_names[] = { 2608 SUPPORTED_HCI_COMMANDS 2609 }; 2610 #undef X 2611 #endif 2612 2613 hci_stack->local_supported_commands = 0; 2614 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2615 uint16_t i; 2616 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2617 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2618 #ifdef ENABLE_LOG_DEBUG 2619 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); 2620 #else 2621 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2622 #endif 2623 hci_stack->local_supported_commands |= (1LU << i); 2624 } 2625 } 2626 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2627 } 2628 2629 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2630 UNUSED(size); 2631 2632 uint16_t manufacturer; 2633 #ifdef ENABLE_CLASSIC 2634 hci_con_handle_t handle; 2635 hci_connection_t * conn; 2636 #endif 2637 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2638 uint8_t status; 2639 #endif 2640 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2641 le_audio_cig_t * cig; 2642 #endif 2643 2644 // get num cmd packets - limit to 1 to reduce complexity 2645 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2646 2647 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2648 switch (opcode){ 2649 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2650 if (packet[5]) break; 2651 // terminate, name 248 chars 2652 packet[6+248] = 0; 2653 log_info("local name: %s", &packet[6]); 2654 break; 2655 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2656 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2657 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2658 uint16_t acl_len = little_endian_read_16(packet, 6); 2659 uint16_t sco_len = packet[8]; 2660 2661 // determine usable ACL/SCO payload size 2662 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2663 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2664 2665 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2666 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2667 2668 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2669 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2670 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2671 } 2672 break; 2673 case HCI_OPCODE_HCI_READ_RSSI: 2674 if (packet[5] == ERROR_CODE_SUCCESS){ 2675 uint8_t event[5]; 2676 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2677 event[1] = 3; 2678 (void)memcpy(&event[2], &packet[6], 3); 2679 hci_emit_event(event, sizeof(event), 1); 2680 } 2681 break; 2682 #ifdef ENABLE_BLE 2683 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2684 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2685 hci_stack->le_iso_packets_total_num = packet[11]; 2686 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2687 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2688 2689 /* fall through */ 2690 2691 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2692 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2693 hci_stack->le_acl_packets_total_num = packet[8]; 2694 // determine usable ACL payload size 2695 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2696 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2697 } 2698 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); 2699 break; 2700 #endif 2701 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2702 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2703 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2704 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2705 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); 2706 break; 2707 #endif 2708 #ifdef ENABLE_LE_CENTRAL 2709 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2710 hci_stack->le_whitelist_capacity = packet[6]; 2711 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2712 break; 2713 #endif 2714 #ifdef ENABLE_LE_PERIPHERAL 2715 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2716 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2717 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2718 break; 2719 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2720 if (hci_stack->le_advertising_set_in_current_command != 0) { 2721 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2722 hci_stack->le_advertising_set_in_current_command = 0; 2723 if (advertising_set == NULL) break; 2724 uint8_t adv_status = packet[6]; 2725 uint8_t tx_power = packet[7]; 2726 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 }; 2727 if (adv_status == 0){ 2728 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2729 } 2730 hci_emit_event(event, sizeof(event), 1); 2731 } 2732 break; 2733 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2734 if (hci_stack->le_advertising_set_in_current_command != 0) { 2735 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2736 hci_stack->le_advertising_set_in_current_command = 0; 2737 if (advertising_set == NULL) break; 2738 uint8_t adv_status = packet[5]; 2739 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2740 if (adv_status == 0){ 2741 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2742 } 2743 hci_emit_event(event, sizeof(event), 1); 2744 } 2745 break; 2746 #endif 2747 #endif 2748 case HCI_OPCODE_HCI_READ_BD_ADDR: 2749 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2750 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)); 2751 #ifdef ENABLE_CLASSIC 2752 if (hci_stack->link_key_db){ 2753 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2754 } 2755 #endif 2756 break; 2757 #ifdef ENABLE_CLASSIC 2758 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2759 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2760 break; 2761 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2762 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2763 if (status == ERROR_CODE_SUCCESS) { 2764 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2765 } else { 2766 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2767 } 2768 break; 2769 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2770 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2771 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2772 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2773 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2774 hci_emit_event(event, sizeof(event), 1); 2775 } 2776 break; 2777 #endif 2778 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2779 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2780 2781 #ifdef ENABLE_CLASSIC 2782 // determine usable ACL packet types based on host buffer size and supported features 2783 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2784 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2785 #endif 2786 // Classic/LE 2787 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2788 break; 2789 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2790 manufacturer = little_endian_read_16(packet, 10); 2791 // map Cypress & Infineon to Broadcom 2792 switch (manufacturer){ 2793 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2794 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2795 log_info("Treat Cypress/Infineon as Broadcom"); 2796 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2797 little_endian_store_16(packet, 10, manufacturer); 2798 break; 2799 default: 2800 break; 2801 } 2802 hci_stack->manufacturer = manufacturer; 2803 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2804 break; 2805 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2806 hci_store_local_supported_commands(packet); 2807 break; 2808 #ifdef ENABLE_CLASSIC 2809 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2810 if (packet[5]) return; 2811 hci_stack->synchronous_flow_control_enabled = 1; 2812 break; 2813 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2814 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2815 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2816 conn = hci_connection_for_handle(handle); 2817 if (conn != NULL) { 2818 uint8_t key_size = 0; 2819 if (status == 0){ 2820 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2821 log_info("Handle %04x key Size: %u", handle, key_size); 2822 } else { 2823 key_size = 1; 2824 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2825 } 2826 hci_handle_read_encryption_key_size_complete(conn, key_size); 2827 } 2828 break; 2829 // assert pairing complete event is emitted. 2830 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2831 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2832 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2833 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2834 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2835 // lookup connection by gap pairing addr 2836 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2837 if (conn == NULL) break; 2838 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2839 break; 2840 2841 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2842 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2843 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2844 uint8_t event[67]; 2845 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2846 event[1] = 65; 2847 (void)memset(&event[2], 0, 65); 2848 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2849 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2850 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2851 event[2] = 3; 2852 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2853 } else { 2854 event[2] = 1; 2855 } 2856 } 2857 hci_emit_event(event, sizeof(event), 0); 2858 break; 2859 } 2860 2861 // note: only needed if user does not provide OOB data 2862 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2863 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2864 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2865 if (conn == NULL) break; 2866 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2867 break; 2868 #endif 2869 #endif 2870 #ifdef ENABLE_BLE 2871 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2872 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2873 // lookup CIG 2874 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2875 if (cig != NULL){ 2876 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2877 uint8_t i = 0; 2878 if (status == ERROR_CODE_SUCCESS){ 2879 // assign CIS handles to pre-allocated CIS 2880 btstack_linked_list_iterator_t it; 2881 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2882 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2883 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2884 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2885 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2886 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2887 iso_stream->cis_handle = cis_handle; 2888 cig->cis_con_handles[i] = cis_handle; 2889 i++; 2890 } 2891 } 2892 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2893 hci_emit_cig_created(cig, status); 2894 } else { 2895 hci_emit_cig_created(cig, status); 2896 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2897 } 2898 } 2899 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2900 break; 2901 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2902 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2903 if (status != ERROR_CODE_SUCCESS){ 2904 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2905 } 2906 break; 2907 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2908 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2909 if (status != ERROR_CODE_SUCCESS){ 2910 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2911 } 2912 break; 2913 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2914 // lookup BIG by state 2915 btstack_linked_list_iterator_t it; 2916 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2917 while (btstack_linked_list_iterator_has_next(&it)) { 2918 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2919 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2920 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2921 if (status == ERROR_CODE_SUCCESS){ 2922 big->state_vars.next_bis++; 2923 if (big->state_vars.next_bis == big->num_bis){ 2924 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2925 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2926 } else { 2927 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2928 } 2929 } else { 2930 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2931 big->state_vars.status = status; 2932 } 2933 return; 2934 } 2935 } 2936 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2937 while (btstack_linked_list_iterator_has_next(&it)) { 2938 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2939 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2940 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2941 if (status == ERROR_CODE_SUCCESS){ 2942 big_sync->state_vars.next_bis++; 2943 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2944 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2945 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2946 } else { 2947 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2948 } 2949 } else { 2950 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2951 big_sync->state_vars.status = status; 2952 } 2953 return; 2954 } 2955 } 2956 // Lookup CIS via active group operation 2957 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 2958 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 2959 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2960 2961 // lookup CIS by state 2962 btstack_linked_list_iterator_t it; 2963 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2964 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2965 while (btstack_linked_list_iterator_has_next(&it)){ 2966 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2967 handle = iso_stream->cis_handle; 2968 bool emit_cis_created = false; 2969 switch (iso_stream->state){ 2970 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 2971 if (status != ERROR_CODE_SUCCESS){ 2972 emit_cis_created = true; 2973 break; 2974 } 2975 if (iso_stream->max_sdu_c_to_p > 0){ 2976 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 2977 } else { 2978 emit_cis_created = true; 2979 } 2980 break; 2981 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 2982 emit_cis_created = true; 2983 break; 2984 default: 2985 break; 2986 } 2987 if (emit_cis_created){ 2988 // cache data before finalizing struct 2989 uint8_t cig_id = iso_stream->group_id; 2990 uint8_t cis_id = iso_stream->stream_id; 2991 hci_con_handle_t cis_handle = iso_stream->cis_handle; 2992 hci_con_handle_t acl_handle = iso_stream->acl_handle; 2993 if (status != ERROR_CODE_SUCCESS){ 2994 hci_iso_stream_finalize(iso_stream); 2995 } 2996 hci_emit_cis_created(status, cig_id, cis_id, cis_handle, acl_handle); 2997 } 2998 } 2999 } else { 3000 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3001 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3002 if (cig != NULL) { 3003 // emit cis created if all ISO Paths have been created 3004 // assume we are central 3005 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3006 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3007 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3008 // if outgoing has been setup, or incoming was setup but outgoing not required 3009 if ((cis_direction == 1) || (outgoing_needed == false)){ 3010 // lookup iso stream by cig/cis 3011 while (btstack_linked_list_iterator_has_next(&it)) { 3012 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3013 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3014 hci_emit_cis_created(status, iso_stream->group_id, iso_stream->stream_id, iso_stream->cis_handle, iso_stream->acl_handle); 3015 } 3016 } 3017 } 3018 // next state 3019 cig->state_vars.next_cis++; 3020 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3021 } 3022 } 3023 } 3024 break; 3025 } 3026 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3027 // lookup BIG by state 3028 btstack_linked_list_iterator_t it; 3029 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3030 while (btstack_linked_list_iterator_has_next(&it)) { 3031 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3032 uint8_t big_handle = big_sync->big_handle; 3033 switch (big_sync->state){ 3034 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3035 btstack_linked_list_iterator_remove(&it); 3036 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3037 return; 3038 default: 3039 btstack_linked_list_iterator_remove(&it); 3040 hci_emit_big_sync_stopped(big_handle); 3041 return; 3042 } 3043 } 3044 break; 3045 } 3046 #endif 3047 #endif 3048 default: 3049 break; 3050 } 3051 } 3052 3053 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3054 UNUSED(size); 3055 3056 // get num cmd packets - limit to 1 to reduce complexity 3057 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3058 3059 // get opcode and command status 3060 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3061 3062 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3063 uint8_t status = hci_event_command_status_get_status(packet); 3064 #endif 3065 3066 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3067 bd_addr_type_t addr_type; 3068 bd_addr_t addr; 3069 #endif 3070 3071 switch (opcode){ 3072 #ifdef ENABLE_CLASSIC 3073 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3074 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3075 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3076 #endif 3077 #ifdef ENABLE_LE_CENTRAL 3078 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3079 #endif 3080 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3081 addr_type = hci_stack->outgoing_addr_type; 3082 memcpy(addr, hci_stack->outgoing_addr, 6); 3083 3084 // reset outgoing address info 3085 memset(hci_stack->outgoing_addr, 0, 6); 3086 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3087 3088 // on error 3089 if (status != ERROR_CODE_SUCCESS){ 3090 #ifdef ENABLE_LE_CENTRAL 3091 if (hci_is_le_connection_type(addr_type)){ 3092 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3093 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3094 } 3095 #endif 3096 // error => outgoing connection failed 3097 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3098 if (conn != NULL){ 3099 hci_handle_connection_failed(conn, status); 3100 } 3101 } 3102 break; 3103 #endif 3104 #ifdef ENABLE_CLASSIC 3105 case HCI_OPCODE_HCI_INQUIRY: 3106 if (status == ERROR_CODE_SUCCESS) { 3107 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3108 } else { 3109 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3110 } 3111 break; 3112 #endif 3113 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3114 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3115 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3116 if (status == ERROR_CODE_SUCCESS){ 3117 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3118 } else { 3119 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3120 } 3121 break; 3122 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3123 default: 3124 break; 3125 } 3126 } 3127 3128 #ifdef ENABLE_BLE 3129 static void event_handle_le_connection_complete(const uint8_t * packet){ 3130 bd_addr_t addr; 3131 bd_addr_type_t addr_type; 3132 hci_connection_t * conn; 3133 3134 // Connection management 3135 reverse_bd_addr(&packet[8], addr); 3136 addr_type = (bd_addr_type_t)packet[7]; 3137 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 3138 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3139 3140 #ifdef ENABLE_LE_CENTRAL 3141 // handle error: error is reported only to the initiator -> outgoing connection 3142 if (packet[3]){ 3143 3144 // handle cancelled outgoing connection 3145 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3146 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3147 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3148 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3149 // reset state 3150 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3151 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3152 // get outgoing connection conn struct for direct connect 3153 conn = gap_get_outgoing_connection(); 3154 } 3155 3156 // outgoing le connection establishment is done 3157 if (conn){ 3158 // remove entry 3159 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3160 btstack_memory_hci_connection_free( conn ); 3161 } 3162 return; 3163 } 3164 #endif 3165 3166 // on success, both hosts receive connection complete event 3167 if (packet[6] == HCI_ROLE_MASTER){ 3168 #ifdef ENABLE_LE_CENTRAL 3169 // if we're master on an le connection, it was an outgoing connection and we're done with it 3170 // note: no hci_connection_t object exists yet for connect with whitelist 3171 if (hci_is_le_connection_type(addr_type)){ 3172 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3173 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3174 } 3175 #endif 3176 } else { 3177 #ifdef ENABLE_LE_PERIPHERAL 3178 // if we're slave, it was an incoming connection, advertisements have stopped 3179 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3180 #endif 3181 } 3182 3183 // LE connections are auto-accepted, so just create a connection if there isn't one already 3184 if (!conn){ 3185 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3186 } 3187 3188 // no memory, sorry. 3189 if (!conn){ 3190 return; 3191 } 3192 3193 conn->state = OPEN; 3194 conn->role = packet[6]; 3195 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3196 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3197 3198 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3199 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3200 3201 #ifdef ENABLE_LE_PERIPHERAL 3202 if (packet[6] == HCI_ROLE_SLAVE){ 3203 hci_update_advertisements_enabled_for_current_roles(); 3204 } 3205 #endif 3206 3207 // init unenhanced att bearer mtu 3208 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3209 conn->att_connection.mtu_exchanged = false; 3210 3211 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3212 3213 // restart timer 3214 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3215 // btstack_run_loop_add_timer(&conn->timeout); 3216 3217 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3218 3219 hci_emit_nr_connections_changed(); 3220 } 3221 #endif 3222 3223 #ifdef ENABLE_CLASSIC 3224 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){ 3225 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3226 // LEVEL_4 is tested by l2cap 3227 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3228 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3229 if (level >= LEVEL_3){ 3230 // MITM not possible without keyboard or display 3231 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3232 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3233 3234 // MITM possible if one side has keyboard and the other has keyboard or display 3235 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3236 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3237 3238 // MITM not possible if one side has only display and other side has no keyboard 3239 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3240 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3241 } 3242 // LEVEL 2 requires SSP, which is a given 3243 return true; 3244 } 3245 3246 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3247 // get requested security level 3248 gap_security_level_t requested_security_level = conn->requested_security_level; 3249 if (hci_stack->gap_secure_connections_only_mode){ 3250 requested_security_level = LEVEL_4; 3251 } 3252 3253 // assess security: LEVEL 4 requires SC 3254 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3255 if ((requested_security_level == LEVEL_4) && 3256 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3257 !hci_remote_sc_enabled(conn)){ 3258 log_info("Level 4 required, but SC not supported -> abort"); 3259 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3260 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3261 return; 3262 } 3263 3264 // assess security based on io capabilities 3265 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3266 // responder: fully validate io caps of both sides as well as OOB data 3267 bool security_possible = false; 3268 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3269 3270 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3271 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3272 // so we merge the OOB data availability 3273 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3274 if (conn->classic_oob_c_192 != NULL){ 3275 have_oob_data |= 1; 3276 } 3277 if (conn->classic_oob_c_256 != NULL){ 3278 have_oob_data |= 2; 3279 } 3280 // for up to Level 3, either P-192 as well as P-256 will do 3281 // 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 3282 // if remote does not SC, we should not receive P-256 data either 3283 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3284 security_possible = true; 3285 } 3286 // for Level 4, P-256 is needed 3287 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3288 security_possible = true; 3289 } 3290 #endif 3291 3292 if (security_possible == false){ 3293 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3294 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3295 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3296 return; 3297 } 3298 } else { 3299 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3300 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3301 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3302 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3303 log_info("Level 3+ required, but no input/output -> abort"); 3304 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3305 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3306 return; 3307 } 3308 #endif 3309 #endif 3310 } 3311 3312 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3313 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3314 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3315 } else { 3316 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3317 } 3318 #endif 3319 } 3320 3321 #endif 3322 3323 static void event_handler(uint8_t *packet, uint16_t size){ 3324 3325 uint16_t event_length = packet[1]; 3326 3327 // assert packet is complete 3328 if (size != (event_length + 2u)){ 3329 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3330 return; 3331 } 3332 3333 hci_con_handle_t handle; 3334 hci_connection_t * conn; 3335 int i; 3336 3337 #ifdef ENABLE_CLASSIC 3338 hci_link_type_t link_type; 3339 bd_addr_t addr; 3340 bd_addr_type_t addr_type; 3341 #endif 3342 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3343 hci_iso_stream_t * iso_stream; 3344 le_audio_big_t * big; 3345 le_audio_big_sync_t * big_sync; 3346 #endif 3347 3348 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3349 3350 switch (hci_event_packet_get_type(packet)) { 3351 3352 case HCI_EVENT_COMMAND_COMPLETE: 3353 handle_command_complete_event(packet, size); 3354 break; 3355 3356 case HCI_EVENT_COMMAND_STATUS: 3357 handle_command_status_event(packet, size); 3358 break; 3359 3360 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3361 if (size < 3) return; 3362 uint16_t num_handles = packet[2]; 3363 if (size != (3u + num_handles * 4u)) return; 3364 #ifdef ENABLE_CLASSIC 3365 bool notify_sco = false; 3366 #endif 3367 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3368 bool notify_iso = false; 3369 #endif 3370 uint16_t offset = 3; 3371 for (i=0; i<num_handles;i++){ 3372 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3373 offset += 2u; 3374 uint16_t num_packets = little_endian_read_16(packet, offset); 3375 offset += 2u; 3376 3377 conn = hci_connection_for_handle(handle); 3378 if (conn != NULL) { 3379 3380 if (conn->num_packets_sent >= num_packets) { 3381 conn->num_packets_sent -= num_packets; 3382 } else { 3383 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3384 conn->num_packets_sent = 0; 3385 } 3386 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3387 #ifdef ENABLE_CLASSIC 3388 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3389 notify_sco = true; 3390 } 3391 #endif 3392 } 3393 3394 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3395 hci_controller_dump_packets(); 3396 #endif 3397 3398 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3399 if (conn == NULL){ 3400 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3401 if (iso_stream != NULL){ 3402 if (iso_stream->num_packets_sent >= num_packets) { 3403 iso_stream->num_packets_sent -= num_packets; 3404 } else { 3405 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3406 iso_stream->num_packets_sent = 0; 3407 } 3408 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3409 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3410 if (big != NULL){ 3411 big->num_completed_timestamp_current_valid = true; 3412 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3413 } 3414 } 3415 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3416 num_packets, handle, iso_stream->num_packets_sent); 3417 notify_iso = true; 3418 } 3419 } 3420 #endif 3421 } 3422 3423 #ifdef ENABLE_CLASSIC 3424 if (notify_sco){ 3425 hci_notify_if_sco_can_send_now(); 3426 } 3427 #endif 3428 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3429 if (notify_iso){ 3430 hci_iso_notify_can_send_now(); 3431 } 3432 #endif 3433 break; 3434 } 3435 3436 #ifdef ENABLE_CLASSIC 3437 case HCI_EVENT_FLUSH_OCCURRED: 3438 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3439 handle = hci_event_flush_occurred_get_handle(packet); 3440 conn = hci_connection_for_handle(handle); 3441 if (conn) { 3442 log_info("Flush occurred, disconnect 0x%04x", handle); 3443 conn->state = SEND_DISCONNECT; 3444 } 3445 break; 3446 3447 case HCI_EVENT_INQUIRY_COMPLETE: 3448 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3449 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3450 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3451 hci_emit_event(event, sizeof(event), 1); 3452 } 3453 break; 3454 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3455 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3456 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3457 } 3458 break; 3459 case HCI_EVENT_CONNECTION_REQUEST: 3460 reverse_bd_addr(&packet[2], addr); 3461 link_type = (hci_link_type_t) packet[11]; 3462 3463 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3464 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3465 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3466 bd_addr_copy(hci_stack->decline_addr, addr); 3467 break; 3468 } 3469 3470 if (hci_stack->gap_classic_accept_callback != NULL){ 3471 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3472 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3473 bd_addr_copy(hci_stack->decline_addr, addr); 3474 break; 3475 } 3476 } 3477 3478 // TODO: eval COD 8-10 3479 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3480 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3481 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3482 if (!conn) { 3483 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3484 } 3485 if (!conn) { 3486 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3487 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3488 bd_addr_copy(hci_stack->decline_addr, addr); 3489 hci_run(); 3490 // avoid event to higher layer 3491 return; 3492 } 3493 conn->role = HCI_ROLE_SLAVE; 3494 conn->state = RECEIVED_CONNECTION_REQUEST; 3495 // store info about eSCO 3496 if (link_type == HCI_LINK_TYPE_ESCO){ 3497 conn->remote_supported_features[0] |= 1; 3498 } 3499 hci_run(); 3500 break; 3501 3502 case HCI_EVENT_CONNECTION_COMPLETE: 3503 // Connection management 3504 reverse_bd_addr(&packet[5], addr); 3505 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3506 addr_type = BD_ADDR_TYPE_ACL; 3507 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3508 if (conn) { 3509 switch (conn->state){ 3510 // expected states 3511 case ACCEPTED_CONNECTION_REQUEST: 3512 case SENT_CREATE_CONNECTION: 3513 break; 3514 // unexpected state -> ignore 3515 default: 3516 // don't forward event to app 3517 return; 3518 } 3519 if (!packet[2]){ 3520 conn->state = OPEN; 3521 conn->con_handle = little_endian_read_16(packet, 3); 3522 3523 // trigger write supervision timeout if we're master 3524 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3525 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3526 } 3527 3528 // trigger write automatic flush timeout 3529 if (hci_stack->automatic_flush_timeout != 0){ 3530 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3531 } 3532 3533 // restart timer 3534 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3535 btstack_run_loop_add_timer(&conn->timeout); 3536 3537 // trigger remote features for dedicated bonding 3538 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3539 hci_trigger_remote_features_for_connection(conn); 3540 } 3541 3542 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3543 3544 hci_emit_nr_connections_changed(); 3545 } else { 3546 // connection failed 3547 hci_handle_connection_failed(conn, packet[2]); 3548 } 3549 } 3550 break; 3551 3552 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3553 reverse_bd_addr(&packet[5], addr); 3554 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3555 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3556 btstack_assert(conn != NULL); 3557 3558 if (packet[2] != ERROR_CODE_SUCCESS){ 3559 // connection failed, remove entry 3560 hci_handle_connection_failed(conn, packet[2]); 3561 break; 3562 } 3563 3564 conn->state = OPEN; 3565 conn->con_handle = little_endian_read_16(packet, 3); 3566 3567 #ifdef ENABLE_SCO_OVER_HCI 3568 // update SCO 3569 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3570 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3571 } 3572 // trigger can send now 3573 if (hci_have_usb_transport()){ 3574 hci_stack->sco_can_send_now = true; 3575 } 3576 #endif 3577 #ifdef HAVE_SCO_TRANSPORT 3578 // configure sco transport 3579 if (hci_stack->sco_transport != NULL){ 3580 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3581 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3582 } 3583 #endif 3584 break; 3585 3586 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3587 handle = little_endian_read_16(packet, 3); 3588 conn = hci_connection_for_handle(handle); 3589 if (!conn) break; 3590 if (!packet[2]){ 3591 const uint8_t * features = &packet[5]; 3592 hci_handle_remote_features_page_0(conn, features); 3593 3594 // read extended features if possible 3595 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3596 && ((conn->remote_supported_features[0] & 2) != 0)) { 3597 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3598 break; 3599 } 3600 } 3601 hci_handle_remote_features_received(conn); 3602 break; 3603 3604 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3605 handle = little_endian_read_16(packet, 3); 3606 conn = hci_connection_for_handle(handle); 3607 if (!conn) break; 3608 // status = ok, page = 1 3609 if (!packet[2]) { 3610 uint8_t page_number = packet[5]; 3611 uint8_t maximum_page_number = packet[6]; 3612 const uint8_t * features = &packet[7]; 3613 bool done = false; 3614 switch (page_number){ 3615 case 1: 3616 hci_handle_remote_features_page_1(conn, features); 3617 if (maximum_page_number >= 2){ 3618 // get Secure Connections (Controller) from Page 2 if available 3619 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3620 } else { 3621 // otherwise, assume SC (Controller) == SC (Host) 3622 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3623 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3624 } 3625 done = true; 3626 } 3627 break; 3628 case 2: 3629 hci_handle_remote_features_page_2(conn, features); 3630 done = true; 3631 break; 3632 default: 3633 break; 3634 } 3635 if (!done) break; 3636 } 3637 hci_handle_remote_features_received(conn); 3638 break; 3639 3640 case HCI_EVENT_LINK_KEY_REQUEST: 3641 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3642 hci_event_link_key_request_get_bd_addr(packet, addr); 3643 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3644 if (!conn) break; 3645 3646 // lookup link key in db if not cached 3647 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3648 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3649 } 3650 3651 // response sent by hci_run() 3652 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3653 #endif 3654 break; 3655 3656 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3657 hci_event_link_key_request_get_bd_addr(packet, addr); 3658 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3659 if (!conn) break; 3660 3661 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3662 3663 // CVE-2020-26555: ignore NULL link key 3664 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3665 if (btstack_is_null(&packet[8], 16)) break; 3666 3667 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3668 // Change Connection Encryption keeps link key type 3669 if (link_key_type != CHANGED_COMBINATION_KEY){ 3670 conn->link_key_type = link_key_type; 3671 } 3672 3673 // cache link key. link keys stored in little-endian format for legacy reasons 3674 memcpy(&conn->link_key, &packet[8], 16); 3675 3676 // only store link key: 3677 // - if bondable enabled 3678 if (hci_stack->bondable == false) break; 3679 // - if security level sufficient 3680 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3681 // - for SSP, also check if remote side requested bonding as well 3682 if (conn->link_key_type != COMBINATION_KEY){ 3683 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3684 if (!remote_bonding){ 3685 break; 3686 } 3687 } 3688 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3689 break; 3690 } 3691 3692 case HCI_EVENT_PIN_CODE_REQUEST: 3693 hci_event_pin_code_request_get_bd_addr(packet, addr); 3694 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3695 if (!conn) break; 3696 3697 hci_pairing_started(conn, false); 3698 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3699 if (!hci_stack->bondable ){ 3700 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3701 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3702 hci_run(); 3703 return; 3704 } 3705 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3706 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3707 log_info("Level 4 required, but SC not supported -> abort"); 3708 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3709 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3710 hci_run(); 3711 return; 3712 } 3713 break; 3714 3715 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3716 hci_event_io_capability_response_get_bd_addr(packet, addr); 3717 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3718 if (!conn) break; 3719 3720 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3721 hci_pairing_started(conn, true); 3722 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3723 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3724 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3725 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3726 #endif 3727 break; 3728 3729 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3730 hci_event_io_capability_response_get_bd_addr(packet, addr); 3731 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3732 if (!conn) break; 3733 3734 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3735 hci_connection_timestamp(conn); 3736 hci_pairing_started(conn, true); 3737 break; 3738 3739 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3740 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3741 hci_event_remote_oob_data_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 3745 hci_connection_timestamp(conn); 3746 3747 hci_pairing_started(conn, true); 3748 3749 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3750 break; 3751 #endif 3752 3753 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3754 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3755 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3756 if (!conn) break; 3757 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3758 if (hci_stack->ssp_auto_accept){ 3759 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3760 }; 3761 } else { 3762 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3763 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3764 // don't forward event to app 3765 hci_run(); 3766 return; 3767 } 3768 break; 3769 3770 case HCI_EVENT_USER_PASSKEY_REQUEST: 3771 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3772 if (hci_stack->ssp_auto_accept){ 3773 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3774 }; 3775 break; 3776 3777 case HCI_EVENT_MODE_CHANGE: 3778 handle = hci_event_mode_change_get_handle(packet); 3779 conn = hci_connection_for_handle(handle); 3780 if (!conn) break; 3781 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3782 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3783 break; 3784 #endif 3785 3786 case HCI_EVENT_ENCRYPTION_CHANGE: 3787 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3788 handle = hci_event_encryption_change_get_connection_handle(packet); 3789 conn = hci_connection_for_handle(handle); 3790 if (!conn) break; 3791 if (hci_event_encryption_change_get_status(packet) == 0u) { 3792 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3793 if (encryption_enabled){ 3794 if (hci_is_le_connection(conn)){ 3795 // For LE, we accept connection as encrypted 3796 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3797 } 3798 #ifdef ENABLE_CLASSIC 3799 else { 3800 3801 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3802 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3803 bool connected_uses_aes_ccm = encryption_enabled == 2; 3804 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3805 log_info("SC during pairing, but only E0 now -> abort"); 3806 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3807 break; 3808 } 3809 3810 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3811 if (connected_uses_aes_ccm){ 3812 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3813 } 3814 3815 #ifdef ENABLE_TESTING_SUPPORT 3816 // work around for issue with PTS dongle 3817 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3818 #endif 3819 // validate encryption key size 3820 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3821 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3822 // already got encryption key size 3823 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3824 } else { 3825 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3826 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3827 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3828 } else { 3829 // if not, pretend everything is perfect 3830 hci_handle_read_encryption_key_size_complete(conn, 16); 3831 } 3832 } 3833 } 3834 #endif 3835 } else { 3836 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3837 } 3838 } else { 3839 uint8_t status = hci_event_encryption_change_get_status(packet); 3840 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3841 conn->bonding_flags &= ~BONDING_DEDICATED; 3842 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3843 conn->bonding_status = status; 3844 } 3845 } 3846 3847 break; 3848 3849 #ifdef ENABLE_CLASSIC 3850 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3851 handle = hci_event_authentication_complete_get_connection_handle(packet); 3852 conn = hci_connection_for_handle(handle); 3853 if (!conn) break; 3854 3855 // clear authentication active flag 3856 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3857 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3858 3859 // authenticated only if auth status == 0 3860 if (hci_event_authentication_complete_get_status(packet) == 0){ 3861 // authenticated 3862 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3863 3864 // If not already encrypted, start encryption 3865 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3866 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3867 break; 3868 } 3869 } 3870 3871 // emit updated security level 3872 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3873 break; 3874 3875 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3876 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3877 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3878 if (!conn) break; 3879 3880 // treat successfully paired connection as authenticated 3881 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3882 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3883 } 3884 3885 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3886 break; 3887 #endif 3888 3889 // HCI_EVENT_DISCONNECTION_COMPLETE 3890 // has been split, to first notify stack before shutting connection down 3891 // see end of function, too. 3892 case HCI_EVENT_DISCONNECTION_COMPLETE: 3893 if (packet[2]) break; // status != 0 3894 handle = little_endian_read_16(packet, 3); 3895 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3896 if (hci_stack->acl_fragmentation_total_size > 0u) { 3897 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3898 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3899 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3900 hci_stack->acl_fragmentation_total_size = 0; 3901 hci_stack->acl_fragmentation_pos = 0; 3902 if (release_buffer){ 3903 hci_release_packet_buffer(); 3904 } 3905 } 3906 } 3907 3908 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3909 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3910 if (hci_stack->iso_fragmentation_total_size > 0u) { 3911 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3912 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3913 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3914 hci_stack->iso_fragmentation_total_size = 0; 3915 hci_stack->iso_fragmentation_pos = 0; 3916 if (release_buffer){ 3917 hci_release_packet_buffer(); 3918 } 3919 } 3920 } 3921 3922 // finalize iso stream for CIS handle 3923 iso_stream = hci_iso_stream_for_con_handle(handle); 3924 if (iso_stream != NULL){ 3925 hci_iso_stream_finalize(iso_stream); 3926 break; 3927 } 3928 3929 // finalize iso stream(s) for ACL handle 3930 btstack_linked_list_iterator_t it; 3931 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3932 while (btstack_linked_list_iterator_has_next(&it)){ 3933 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3934 if (iso_stream->acl_handle == handle ) { 3935 hci_iso_stream_finalize(iso_stream); 3936 } 3937 } 3938 #endif 3939 3940 conn = hci_connection_for_handle(handle); 3941 if (!conn) break; 3942 #ifdef ENABLE_CLASSIC 3943 // pairing failed if it was ongoing 3944 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3945 #endif 3946 3947 // emit dedicatd bonding event 3948 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3949 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3950 } 3951 3952 // mark connection for shutdown, stop timers, reset state 3953 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3954 hci_connection_stop_timer(conn); 3955 hci_connection_init(conn); 3956 3957 #ifdef ENABLE_BLE 3958 #ifdef ENABLE_LE_PERIPHERAL 3959 // re-enable advertisements for le connections if active 3960 if (hci_is_le_connection(conn)){ 3961 hci_update_advertisements_enabled_for_current_roles(); 3962 } 3963 #endif 3964 #endif 3965 break; 3966 3967 case HCI_EVENT_HARDWARE_ERROR: 3968 log_error("Hardware Error: 0x%02x", packet[2]); 3969 if (hci_stack->hardware_error_callback){ 3970 (*hci_stack->hardware_error_callback)(packet[2]); 3971 } else { 3972 // if no special requests, just reboot stack 3973 hci_power_control_off(); 3974 hci_power_control_on(); 3975 } 3976 break; 3977 3978 #ifdef ENABLE_CLASSIC 3979 case HCI_EVENT_ROLE_CHANGE: 3980 if (packet[2]) break; // status != 0 3981 reverse_bd_addr(&packet[3], addr); 3982 addr_type = BD_ADDR_TYPE_ACL; 3983 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3984 if (!conn) break; 3985 conn->role = packet[9]; 3986 break; 3987 #endif 3988 3989 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3990 // release packet buffer only for asynchronous transport and if there are not further fragments 3991 if (hci_transport_synchronous()) { 3992 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3993 return; // instead of break: to avoid re-entering hci_run() 3994 } 3995 hci_stack->acl_fragmentation_tx_active = 0; 3996 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3997 hci_stack->iso_fragmentation_tx_active = 0; 3998 if (hci_stack->iso_fragmentation_total_size) break; 3999 #endif 4000 if (hci_stack->acl_fragmentation_total_size) break; 4001 hci_release_packet_buffer(); 4002 4003 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4004 hci_iso_notify_can_send_now(); 4005 #endif 4006 // L2CAP receives this event via the hci_emit_event below 4007 4008 #ifdef ENABLE_CLASSIC 4009 // For SCO, we do the can_send_now_check here 4010 hci_notify_if_sco_can_send_now(); 4011 #endif 4012 break; 4013 4014 #ifdef ENABLE_CLASSIC 4015 case HCI_EVENT_SCO_CAN_SEND_NOW: 4016 // For SCO, we do the can_send_now_check here 4017 hci_stack->sco_can_send_now = true; 4018 hci_notify_if_sco_can_send_now(); 4019 return; 4020 4021 // explode inquriy results for easier consumption 4022 case HCI_EVENT_INQUIRY_RESULT: 4023 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4024 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4025 gap_inquiry_explode(packet, size); 4026 break; 4027 #endif 4028 4029 #ifdef ENABLE_BLE 4030 case HCI_EVENT_LE_META: 4031 switch (packet[2]){ 4032 #ifdef ENABLE_LE_CENTRAL 4033 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4034 if (!hci_stack->le_scanning_enabled) break; 4035 le_handle_advertisement_report(packet, size); 4036 break; 4037 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4038 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4039 if (!hci_stack->le_scanning_enabled) break; 4040 le_handle_extended_advertisement_report(packet, size); 4041 break; 4042 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4043 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4044 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4045 break; 4046 #endif 4047 #endif 4048 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4049 event_handle_le_connection_complete(packet); 4050 break; 4051 4052 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4053 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4054 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4055 conn = hci_connection_for_handle(handle); 4056 if (!conn) break; 4057 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4058 break; 4059 4060 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4061 // connection 4062 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4063 conn = hci_connection_for_handle(handle); 4064 if (conn) { 4065 // read arguments 4066 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4067 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4068 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4069 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4070 4071 // validate against current connection parameter range 4072 le_connection_parameter_range_t existing_range; 4073 gap_get_connection_parameter_range(&existing_range); 4074 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4075 if (update_parameter){ 4076 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4077 conn->le_conn_interval_min = le_conn_interval_min; 4078 conn->le_conn_interval_max = le_conn_interval_max; 4079 conn->le_conn_latency = le_conn_latency; 4080 conn->le_supervision_timeout = le_supervision_timeout; 4081 } else { 4082 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4083 } 4084 } 4085 break; 4086 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4087 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4088 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4089 conn = hci_connection_for_handle(handle); 4090 if (conn) { 4091 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4092 } 4093 break; 4094 #endif 4095 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4096 case HCI_SUBEVENT_LE_CIS_REQUEST: 4097 // incoming CIS request, allocate iso stream object and cache metadata 4098 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4099 hci_subevent_le_cis_request_get_cig_id(packet), 4100 hci_subevent_le_cis_request_get_cis_id(packet)); 4101 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4102 if (iso_stream != NULL){ 4103 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4104 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4105 } 4106 break; 4107 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4108 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4109 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4110 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4111 iso_stream = hci_iso_stream_for_con_handle(handle); 4112 btstack_assert(iso_stream != NULL); 4113 // track SDU 4114 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4115 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4116 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4117 // CIS Accept by Peripheral 4118 if (status == ERROR_CODE_SUCCESS){ 4119 if (iso_stream->max_sdu_p_to_c > 0){ 4120 // we're peripheral and we will send data 4121 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4122 } else { 4123 // we're peripheral and we will only receive data 4124 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4125 } 4126 } else { 4127 uint8_t cig_id = iso_stream->group_id; 4128 uint8_t cis_id = iso_stream->stream_id; 4129 uint8_t cis_handle = iso_stream->cis_handle; 4130 hci_con_handle_t acl_handle = iso_stream->acl_handle; 4131 hci_iso_stream_finalize(iso_stream); 4132 hci_emit_cis_created(status, cig_id, cis_id, cis_handle, acl_handle); 4133 } 4134 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4135 } else { 4136 // CIG Setup by Central 4137 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4138 btstack_assert(cig != NULL); 4139 // update iso stream state 4140 if (status == ERROR_CODE_SUCCESS){ 4141 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4142 } else { 4143 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4144 } 4145 // update cig state 4146 uint8_t i; 4147 for (i=0;i<cig->num_cis;i++){ 4148 if (cig->cis_con_handles[i] == handle){ 4149 cig->cis_setup_active[i] = false; 4150 if (status == ERROR_CODE_SUCCESS){ 4151 cig->cis_established[i] = true; 4152 } else { 4153 hci_emit_cis_created(status, iso_stream->group_id, iso_stream->stream_id, iso_stream->cis_handle, iso_stream->acl_handle); 4154 } 4155 } 4156 } 4157 4158 // trigger iso path setup if complete 4159 bool cis_setup_active = false; 4160 for (i=0;i<cig->num_cis;i++){ 4161 cis_setup_active |= cig->cis_setup_active[i]; 4162 } 4163 if (cis_setup_active == false){ 4164 cig->state_vars.next_cis = 0; 4165 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4166 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4167 } 4168 } 4169 } 4170 break; 4171 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4172 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4173 big = hci_big_for_handle(packet[4]); 4174 if (big != NULL){ 4175 uint8_t status = packet[3]; 4176 if (status == ERROR_CODE_SUCCESS){ 4177 // store bis_con_handles and trigger iso path setup 4178 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4179 uint8_t i; 4180 for (i=0;i<num_bis;i++){ 4181 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4182 big->bis_con_handles[i] = bis_handle; 4183 // assign bis handle 4184 btstack_linked_list_iterator_t it; 4185 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4186 while (btstack_linked_list_iterator_has_next(&it)){ 4187 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4188 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4189 (iso_stream->group_id == big->big_handle)){ 4190 iso_stream->cis_handle = bis_handle; 4191 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4192 break; 4193 } 4194 } 4195 } 4196 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4197 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4198 big->state_vars.next_bis = 0; 4199 } 4200 } else { 4201 // create BIG failed or has been stopped by us 4202 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4203 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4204 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4205 hci_emit_big_created(big, status); 4206 } else { 4207 hci_emit_big_terminated(big); 4208 } 4209 } 4210 } 4211 break; 4212 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4213 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4214 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4215 if (big != NULL){ 4216 // finalize associated ISO streams 4217 btstack_linked_list_iterator_t it; 4218 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4219 while (btstack_linked_list_iterator_has_next(&it)){ 4220 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4221 if (iso_stream->group_id == big->big_handle){ 4222 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4223 btstack_linked_list_iterator_remove(&it); 4224 btstack_memory_hci_iso_stream_free(iso_stream); 4225 } 4226 } 4227 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4228 switch (big->state){ 4229 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4230 hci_emit_big_created(big, big->state_vars.status); 4231 break; 4232 default: 4233 hci_emit_big_terminated(big); 4234 break; 4235 } 4236 } 4237 break; 4238 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4239 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4240 big_sync = hci_big_sync_for_handle(packet[4]); 4241 if (big_sync != NULL){ 4242 uint8_t status = packet[3]; 4243 uint8_t big_handle = packet[4]; 4244 if (status == ERROR_CODE_SUCCESS){ 4245 // store bis_con_handles and trigger iso path setup 4246 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4247 uint8_t i; 4248 for (i=0;i<num_bis;i++){ 4249 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4250 } 4251 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4252 // trigger iso path setup 4253 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4254 big_sync->state_vars.next_bis = 0; 4255 } 4256 } else { 4257 // create BIG Sync failed or has been stopped by us 4258 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4259 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4260 hci_emit_big_sync_created(big_sync, status); 4261 } else { 4262 hci_emit_big_sync_stopped(big_handle); 4263 } 4264 } 4265 } 4266 break; 4267 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4268 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4269 big_sync = hci_big_sync_for_handle(packet[4]); 4270 if (big_sync != NULL){ 4271 uint8_t big_handle = packet[4]; 4272 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4273 hci_emit_big_sync_stopped(big_handle); 4274 } 4275 break; 4276 #endif 4277 default: 4278 break; 4279 } 4280 break; 4281 #endif 4282 case HCI_EVENT_VENDOR_SPECIFIC: 4283 // Vendor specific commands often create vendor specific event instead of num completed packets 4284 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4285 switch (hci_stack->manufacturer){ 4286 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4287 hci_stack->num_cmd_packets = 1; 4288 break; 4289 default: 4290 break; 4291 } 4292 break; 4293 default: 4294 break; 4295 } 4296 4297 handle_event_for_current_stack_state(packet, size); 4298 4299 // notify upper stack 4300 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4301 4302 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4303 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4304 handle = little_endian_read_16(packet, 3); 4305 hci_connection_t * aConn = hci_connection_for_handle(handle); 4306 // discard connection if app did not trigger a reconnect in the event handler 4307 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4308 hci_shutdown_connection(aConn); 4309 } 4310 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4311 hci_controller_dump_packets(); 4312 #endif 4313 } 4314 4315 // execute main loop 4316 hci_run(); 4317 } 4318 4319 #ifdef ENABLE_CLASSIC 4320 4321 #ifdef ENABLE_SCO_OVER_HCI 4322 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4323 static void sco_schedule_tx(hci_connection_t * conn); 4324 4325 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4326 log_debug("SCO TX Timeout"); 4327 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4328 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4329 if (!conn) return; 4330 4331 // trigger send 4332 conn->sco_tx_ready = 1; 4333 // extra packet if CVSD but SCO buffer is too short 4334 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4335 conn->sco_tx_ready++; 4336 } 4337 hci_notify_if_sco_can_send_now(); 4338 } 4339 4340 4341 #define SCO_TX_AFTER_RX_MS (6) 4342 4343 static void sco_schedule_tx(hci_connection_t * conn){ 4344 4345 uint32_t now = btstack_run_loop_get_time_ms(); 4346 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4347 int time_delta_ms = sco_tx_ms - now; 4348 4349 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4350 4351 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4352 btstack_run_loop_remove_timer(timer); 4353 btstack_run_loop_set_timer(timer, time_delta_ms); 4354 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4355 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4356 btstack_run_loop_add_timer(timer); 4357 } 4358 #endif 4359 4360 static void sco_handler(uint8_t * packet, uint16_t size){ 4361 // lookup connection struct 4362 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4363 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4364 if (!conn) return; 4365 4366 #ifdef ENABLE_SCO_OVER_HCI 4367 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4368 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4369 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4370 packet[2] = 0x3c; 4371 memmove(&packet[3], &packet[23], 63); 4372 size = 63; 4373 } 4374 } 4375 4376 if (hci_have_usb_transport()){ 4377 // Nothing to do 4378 } else { 4379 // 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); 4380 if (hci_stack->synchronous_flow_control_enabled == 0){ 4381 uint32_t now = btstack_run_loop_get_time_ms(); 4382 4383 if (!conn->sco_rx_valid){ 4384 // ignore first 10 packets 4385 conn->sco_rx_count++; 4386 // log_debug("sco rx count %u", conn->sco_rx_count); 4387 if (conn->sco_rx_count == 10) { 4388 // use first timestamp as is and pretent it just started 4389 conn->sco_rx_ms = now; 4390 conn->sco_rx_valid = 1; 4391 conn->sco_rx_count = 0; 4392 sco_schedule_tx(conn); 4393 } 4394 } else { 4395 // track expected arrival timme 4396 conn->sco_rx_count++; 4397 conn->sco_rx_ms += 7; 4398 int delta = (int32_t) (now - conn->sco_rx_ms); 4399 if (delta > 0){ 4400 conn->sco_rx_ms++; 4401 } 4402 // log_debug("sco rx %u", conn->sco_rx_ms); 4403 sco_schedule_tx(conn); 4404 } 4405 } 4406 } 4407 #endif 4408 4409 // deliver to app 4410 if (hci_stack->sco_packet_handler) { 4411 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4412 } 4413 4414 #ifdef HAVE_SCO_TRANSPORT 4415 // We can send one packet for each received packet 4416 conn->sco_tx_ready++; 4417 hci_notify_if_sco_can_send_now(); 4418 #endif 4419 4420 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4421 conn->num_packets_completed++; 4422 hci_stack->host_completed_packets = 1; 4423 hci_run(); 4424 #endif 4425 } 4426 #endif 4427 4428 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4429 hci_dump_packet(packet_type, 1, packet, size); 4430 switch (packet_type) { 4431 case HCI_EVENT_PACKET: 4432 event_handler(packet, size); 4433 break; 4434 case HCI_ACL_DATA_PACKET: 4435 acl_handler(packet, size); 4436 break; 4437 #ifdef ENABLE_CLASSIC 4438 case HCI_SCO_DATA_PACKET: 4439 sco_handler(packet, size); 4440 break; 4441 #endif 4442 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4443 case HCI_ISO_DATA_PACKET: 4444 hci_iso_packet_handler(packet, size); 4445 break; 4446 #endif 4447 default: 4448 break; 4449 } 4450 } 4451 4452 /** 4453 * @brief Add event packet handler. 4454 */ 4455 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4456 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4457 } 4458 4459 /** 4460 * @brief Remove event packet handler. 4461 */ 4462 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4463 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4464 } 4465 4466 /** Register HCI packet handlers */ 4467 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4468 hci_stack->acl_packet_handler = handler; 4469 } 4470 4471 #ifdef ENABLE_CLASSIC 4472 /** 4473 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4474 */ 4475 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4476 hci_stack->sco_packet_handler = handler; 4477 } 4478 #endif 4479 4480 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4481 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4482 hci_stack->iso_packet_handler = handler; 4483 } 4484 #endif 4485 4486 static void hci_state_reset(void){ 4487 // no connections yet 4488 hci_stack->connections = NULL; 4489 4490 // keep discoverable/connectable as this has been requested by the client(s) 4491 // hci_stack->discoverable = 0; 4492 // hci_stack->connectable = 0; 4493 // hci_stack->bondable = 1; 4494 // hci_stack->own_addr_type = 0; 4495 4496 // buffer is free 4497 hci_stack->hci_packet_buffer_reserved = false; 4498 4499 // no pending cmds 4500 hci_stack->decline_reason = 0; 4501 4502 hci_stack->secure_connections_active = false; 4503 4504 #ifdef ENABLE_CLASSIC 4505 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4506 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4507 4508 hci_stack->gap_tasks_classic = 4509 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4510 GAP_TASK_SET_CLASS_OF_DEVICE | 4511 GAP_TASK_SET_LOCAL_NAME | 4512 GAP_TASK_SET_EIR_DATA | 4513 GAP_TASK_WRITE_SCAN_ENABLE | 4514 GAP_TASK_WRITE_PAGE_TIMEOUT; 4515 #endif 4516 4517 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4518 hci_stack->classic_read_local_oob_data = false; 4519 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4520 #endif 4521 4522 // LE 4523 #ifdef ENABLE_BLE 4524 memset(hci_stack->le_random_address, 0, 6); 4525 hci_stack->le_random_address_set = 0; 4526 #endif 4527 #ifdef ENABLE_LE_CENTRAL 4528 hci_stack->le_scanning_active = false; 4529 hci_stack->le_scanning_param_update = true; 4530 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4531 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4532 hci_stack->le_whitelist_capacity = 0; 4533 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4534 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4535 #endif 4536 #endif 4537 #ifdef ENABLE_LE_PERIPHERAL 4538 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4539 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4540 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4541 } 4542 if (hci_stack->le_advertisements_data != NULL){ 4543 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4544 } 4545 #endif 4546 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4547 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4548 #endif 4549 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4550 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4551 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4552 #endif 4553 } 4554 4555 #ifdef ENABLE_CLASSIC 4556 /** 4557 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4558 */ 4559 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4560 // store and open remote device db 4561 hci_stack->link_key_db = link_key_db; 4562 if (hci_stack->link_key_db) { 4563 hci_stack->link_key_db->open(); 4564 } 4565 } 4566 #endif 4567 4568 void hci_init(const hci_transport_t *transport, const void *config){ 4569 4570 #ifdef HAVE_MALLOC 4571 if (!hci_stack) { 4572 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4573 } 4574 #else 4575 hci_stack = &hci_stack_static; 4576 #endif 4577 memset(hci_stack, 0, sizeof(hci_stack_t)); 4578 4579 // reference to use transport layer implementation 4580 hci_stack->hci_transport = transport; 4581 4582 // reference to used config 4583 hci_stack->config = config; 4584 4585 // setup pointer for outgoing packet buffer 4586 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4587 4588 // max acl payload size defined in config.h 4589 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4590 4591 // register packet handlers with transport 4592 transport->register_packet_handler(&packet_handler); 4593 4594 hci_stack->state = HCI_STATE_OFF; 4595 4596 // class of device 4597 hci_stack->class_of_device = 0x007a020c; // Smartphone 4598 4599 // bondable by default 4600 hci_stack->bondable = 1; 4601 4602 #ifdef ENABLE_CLASSIC 4603 // classic name 4604 hci_stack->local_name = default_classic_name; 4605 4606 // Master slave policy 4607 hci_stack->master_slave_policy = 1; 4608 4609 // Allow Role Switch 4610 hci_stack->allow_role_switch = 1; 4611 4612 // Default / minimum security level = 2 4613 hci_stack->gap_security_level = LEVEL_2; 4614 4615 // Default Security Mode 4 4616 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4617 4618 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4619 hci_stack->gap_required_encyrption_key_size = 7; 4620 4621 // Link Supervision Timeout 4622 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4623 4624 #endif 4625 4626 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4627 hci_stack->ssp_enable = 1; 4628 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4629 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4630 hci_stack->ssp_auto_accept = 1; 4631 4632 // Secure Connections: enable (requires support from Controller) 4633 hci_stack->secure_connections_enable = true; 4634 4635 // voice setting - signed 16 bit pcm data with CVSD over the air 4636 hci_stack->sco_voice_setting = 0x60; 4637 4638 #ifdef ENABLE_LE_CENTRAL 4639 // connection parameter to use for outgoing connections 4640 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4641 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4642 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4643 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4644 hci_stack->le_connection_latency = 4; // 4 4645 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4646 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 4647 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 4648 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4649 4650 // default LE Scanning 4651 hci_stack->le_scan_type = 0x01; // active 4652 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4653 hci_stack->le_scan_window = 0x30; // 30 ms 4654 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4655 #endif 4656 4657 #ifdef ENABLE_LE_PERIPHERAL 4658 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4659 4660 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4661 hci_stack->le_advertisements_interval_min = 0x0800; 4662 hci_stack->le_advertisements_interval_max = 0x0800; 4663 hci_stack->le_advertisements_type = 0; 4664 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4665 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4666 hci_stack->le_advertisements_channel_map = 0x07; 4667 hci_stack->le_advertisements_filter_policy = 0; 4668 #endif 4669 4670 // connection parameter range used to answer connection parameter update requests in l2cap 4671 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4672 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4673 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4674 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4675 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4676 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4677 4678 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4679 hci_stack->iso_packets_to_queue = 1; 4680 #endif 4681 4682 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4683 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4684 #endif 4685 4686 hci_state_reset(); 4687 } 4688 4689 void hci_deinit(void){ 4690 btstack_run_loop_remove_timer(&hci_stack->timeout); 4691 #ifdef HAVE_MALLOC 4692 if (hci_stack) { 4693 free(hci_stack); 4694 } 4695 #endif 4696 hci_stack = NULL; 4697 4698 #ifdef ENABLE_CLASSIC 4699 disable_l2cap_timeouts = 0; 4700 #endif 4701 } 4702 4703 /** 4704 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4705 */ 4706 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4707 hci_stack->chipset = chipset_driver; 4708 4709 // reset chipset driver - init is also called on power_up 4710 if (hci_stack->chipset && hci_stack->chipset->init){ 4711 hci_stack->chipset->init(hci_stack->config); 4712 } 4713 } 4714 4715 void hci_enable_custom_pre_init(void){ 4716 hci_stack->chipset_pre_init = true; 4717 } 4718 4719 /** 4720 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4721 */ 4722 void hci_set_control(const btstack_control_t *hardware_control){ 4723 // references to used control implementation 4724 hci_stack->control = hardware_control; 4725 // init with transport config 4726 hardware_control->init(hci_stack->config); 4727 } 4728 4729 static void hci_discard_connections(void){ 4730 btstack_linked_list_iterator_t it; 4731 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4732 while (btstack_linked_list_iterator_has_next(&it)){ 4733 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4734 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4735 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4736 hci_shutdown_connection(connection); 4737 } 4738 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4739 while (hci_stack->iso_streams != NULL){ 4740 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4741 } 4742 #endif 4743 } 4744 4745 void hci_close(void){ 4746 4747 #ifdef ENABLE_CLASSIC 4748 // close remote device db 4749 if (hci_stack->link_key_db) { 4750 hci_stack->link_key_db->close(); 4751 } 4752 #endif 4753 4754 hci_discard_connections(); 4755 4756 hci_power_control(HCI_POWER_OFF); 4757 4758 #ifdef HAVE_MALLOC 4759 free(hci_stack); 4760 #endif 4761 hci_stack = NULL; 4762 } 4763 4764 #ifdef HAVE_SCO_TRANSPORT 4765 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4766 hci_stack->sco_transport = sco_transport; 4767 sco_transport->register_packet_handler(&packet_handler); 4768 } 4769 #endif 4770 4771 #ifdef ENABLE_CLASSIC 4772 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4773 // validate ranage and set 4774 if (encryption_key_size < 7) return; 4775 if (encryption_key_size > 16) return; 4776 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4777 } 4778 4779 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4780 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4781 hci_stack->gap_security_mode = security_mode; 4782 return ERROR_CODE_SUCCESS; 4783 } else { 4784 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4785 } 4786 } 4787 4788 gap_security_mode_t gap_get_security_mode(void){ 4789 return hci_stack->gap_security_mode; 4790 } 4791 4792 void gap_set_security_level(gap_security_level_t security_level){ 4793 hci_stack->gap_security_level = security_level; 4794 } 4795 4796 gap_security_level_t gap_get_security_level(void){ 4797 if (hci_stack->gap_secure_connections_only_mode){ 4798 return LEVEL_4; 4799 } 4800 return hci_stack->gap_security_level; 4801 } 4802 4803 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4804 hci_stack->gap_minimal_service_security_level = security_level; 4805 } 4806 4807 void gap_set_secure_connections_only_mode(bool enable){ 4808 hci_stack->gap_secure_connections_only_mode = enable; 4809 } 4810 4811 bool gap_get_secure_connections_only_mode(void){ 4812 return hci_stack->gap_secure_connections_only_mode; 4813 } 4814 #endif 4815 4816 #ifdef ENABLE_CLASSIC 4817 void gap_set_class_of_device(uint32_t class_of_device){ 4818 hci_stack->class_of_device = class_of_device; 4819 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4820 hci_run(); 4821 } 4822 4823 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4824 hci_stack->default_link_policy_settings = default_link_policy_settings; 4825 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4826 hci_run(); 4827 } 4828 4829 void gap_set_allow_role_switch(bool allow_role_switch){ 4830 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4831 } 4832 4833 uint8_t hci_get_allow_role_switch(void){ 4834 return hci_stack->allow_role_switch; 4835 } 4836 4837 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4838 hci_stack->link_supervision_timeout = link_supervision_timeout; 4839 } 4840 4841 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4842 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4843 } 4844 4845 uint16_t hci_automatic_flush_timeout(void){ 4846 return hci_stack->automatic_flush_timeout; 4847 } 4848 4849 void hci_disable_l2cap_timeout_check(void){ 4850 disable_l2cap_timeouts = 1; 4851 } 4852 #endif 4853 4854 #ifndef HAVE_HOST_CONTROLLER_API 4855 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4856 void hci_set_bd_addr(bd_addr_t addr){ 4857 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4858 hci_stack->custom_bd_addr_set = 1; 4859 } 4860 #endif 4861 4862 // State-Module-Driver overview 4863 // state module low-level 4864 // HCI_STATE_OFF off close 4865 // HCI_STATE_INITIALIZING, on open 4866 // HCI_STATE_WORKING, on open 4867 // HCI_STATE_HALTING, on open 4868 // HCI_STATE_SLEEPING, off/sleep close 4869 // HCI_STATE_FALLING_ASLEEP on open 4870 4871 static int hci_power_control_on(void){ 4872 4873 // power on 4874 int err = 0; 4875 if (hci_stack->control && hci_stack->control->on){ 4876 err = (*hci_stack->control->on)(); 4877 } 4878 if (err){ 4879 log_error( "POWER_ON failed"); 4880 hci_emit_hci_open_failed(); 4881 return err; 4882 } 4883 4884 // int chipset driver 4885 if (hci_stack->chipset && hci_stack->chipset->init){ 4886 hci_stack->chipset->init(hci_stack->config); 4887 } 4888 4889 // init transport 4890 if (hci_stack->hci_transport->init){ 4891 hci_stack->hci_transport->init(hci_stack->config); 4892 } 4893 4894 // open transport 4895 err = hci_stack->hci_transport->open(); 4896 if (err){ 4897 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4898 if (hci_stack->control && hci_stack->control->off){ 4899 (*hci_stack->control->off)(); 4900 } 4901 hci_emit_hci_open_failed(); 4902 return err; 4903 } 4904 return 0; 4905 } 4906 4907 static void hci_power_control_off(void){ 4908 4909 log_info("hci_power_control_off"); 4910 4911 // close low-level device 4912 hci_stack->hci_transport->close(); 4913 4914 log_info("hci_power_control_off - hci_transport closed"); 4915 4916 // power off 4917 if (hci_stack->control && hci_stack->control->off){ 4918 (*hci_stack->control->off)(); 4919 } 4920 4921 log_info("hci_power_control_off - control closed"); 4922 4923 hci_stack->state = HCI_STATE_OFF; 4924 } 4925 4926 static void hci_power_control_sleep(void){ 4927 4928 log_info("hci_power_control_sleep"); 4929 4930 #if 0 4931 // don't close serial port during sleep 4932 4933 // close low-level device 4934 hci_stack->hci_transport->close(hci_stack->config); 4935 #endif 4936 4937 // sleep mode 4938 if (hci_stack->control && hci_stack->control->sleep){ 4939 (*hci_stack->control->sleep)(); 4940 } 4941 4942 hci_stack->state = HCI_STATE_SLEEPING; 4943 } 4944 4945 static int hci_power_control_wake(void){ 4946 4947 log_info("hci_power_control_wake"); 4948 4949 // wake on 4950 if (hci_stack->control && hci_stack->control->wake){ 4951 (*hci_stack->control->wake)(); 4952 } 4953 4954 #if 0 4955 // open low-level device 4956 int err = hci_stack->hci_transport->open(hci_stack->config); 4957 if (err){ 4958 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4959 if (hci_stack->control && hci_stack->control->off){ 4960 (*hci_stack->control->off)(); 4961 } 4962 hci_emit_hci_open_failed(); 4963 return err; 4964 } 4965 #endif 4966 4967 return 0; 4968 } 4969 4970 static void hci_power_enter_initializing_state(void){ 4971 // set up state machine 4972 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4973 hci_stack->hci_packet_buffer_reserved = false; 4974 hci_stack->state = HCI_STATE_INITIALIZING; 4975 4976 if (hci_stack->chipset_pre_init) { 4977 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 4978 } else { 4979 hci_stack->substate = HCI_INIT_SEND_RESET; 4980 } 4981 } 4982 4983 static void hci_power_enter_halting_state(void){ 4984 #ifdef ENABLE_BLE 4985 // drop entries scheduled for removal, mark others for re-adding 4986 btstack_linked_list_iterator_t it; 4987 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 4988 while (btstack_linked_list_iterator_has_next(&it)){ 4989 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 4990 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 4991 btstack_linked_list_iterator_remove(&it); 4992 btstack_memory_whitelist_entry_free(entry); 4993 } else { 4994 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 4995 } 4996 } 4997 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4998 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 4999 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5000 while (btstack_linked_list_iterator_has_next(&it)){ 5001 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5002 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5003 btstack_linked_list_iterator_remove(&it); 5004 btstack_memory_periodic_advertiser_list_entry_free(entry); 5005 } else { 5006 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5007 continue; 5008 } 5009 } 5010 #endif 5011 #endif 5012 // see hci_run 5013 hci_stack->state = HCI_STATE_HALTING; 5014 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5015 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5016 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5017 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5018 btstack_run_loop_add_timer(&hci_stack->timeout); 5019 } 5020 5021 // returns error 5022 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5023 int err; 5024 switch (power_mode){ 5025 case HCI_POWER_ON: 5026 err = hci_power_control_on(); 5027 if (err != 0) { 5028 log_error("hci_power_control_on() error %d", err); 5029 return err; 5030 } 5031 hci_power_enter_initializing_state(); 5032 break; 5033 case HCI_POWER_OFF: 5034 // do nothing 5035 break; 5036 case HCI_POWER_SLEEP: 5037 // do nothing (with SLEEP == OFF) 5038 break; 5039 default: 5040 btstack_assert(false); 5041 break; 5042 } 5043 return ERROR_CODE_SUCCESS; 5044 } 5045 5046 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5047 switch (power_mode){ 5048 case HCI_POWER_ON: 5049 // do nothing 5050 break; 5051 case HCI_POWER_OFF: 5052 // no connections yet, just turn it off 5053 hci_power_control_off(); 5054 break; 5055 case HCI_POWER_SLEEP: 5056 // no connections yet, just turn it off 5057 hci_power_control_sleep(); 5058 break; 5059 default: 5060 btstack_assert(false); 5061 break; 5062 } 5063 return ERROR_CODE_SUCCESS; 5064 } 5065 5066 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5067 switch (power_mode){ 5068 case HCI_POWER_ON: 5069 // do nothing 5070 break; 5071 case HCI_POWER_OFF: 5072 hci_power_enter_halting_state(); 5073 break; 5074 case HCI_POWER_SLEEP: 5075 // see hci_run 5076 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5077 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5078 break; 5079 default: 5080 btstack_assert(false); 5081 break; 5082 } 5083 return ERROR_CODE_SUCCESS; 5084 } 5085 5086 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5087 switch (power_mode){ 5088 case HCI_POWER_ON: 5089 hci_power_enter_initializing_state(); 5090 break; 5091 case HCI_POWER_OFF: 5092 // do nothing 5093 break; 5094 case HCI_POWER_SLEEP: 5095 // see hci_run 5096 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5097 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5098 break; 5099 default: 5100 btstack_assert(false); 5101 break; 5102 } 5103 return ERROR_CODE_SUCCESS; 5104 } 5105 5106 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5107 switch (power_mode){ 5108 case HCI_POWER_ON: 5109 hci_power_enter_initializing_state(); 5110 break; 5111 case HCI_POWER_OFF: 5112 hci_power_enter_halting_state(); 5113 break; 5114 case HCI_POWER_SLEEP: 5115 // do nothing 5116 break; 5117 default: 5118 btstack_assert(false); 5119 break; 5120 } 5121 return ERROR_CODE_SUCCESS; 5122 } 5123 5124 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5125 int err; 5126 switch (power_mode){ 5127 case HCI_POWER_ON: 5128 err = hci_power_control_wake(); 5129 if (err) return err; 5130 hci_power_enter_initializing_state(); 5131 break; 5132 case HCI_POWER_OFF: 5133 hci_power_enter_halting_state(); 5134 break; 5135 case HCI_POWER_SLEEP: 5136 // do nothing 5137 break; 5138 default: 5139 btstack_assert(false); 5140 break; 5141 } 5142 return ERROR_CODE_SUCCESS; 5143 } 5144 5145 int hci_power_control(HCI_POWER_MODE power_mode){ 5146 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5147 btstack_run_loop_remove_timer(&hci_stack->timeout); 5148 int err = 0; 5149 switch (hci_stack->state){ 5150 case HCI_STATE_OFF: 5151 err = hci_power_control_state_off(power_mode); 5152 break; 5153 case HCI_STATE_INITIALIZING: 5154 err = hci_power_control_state_initializing(power_mode); 5155 break; 5156 case HCI_STATE_WORKING: 5157 err = hci_power_control_state_working(power_mode); 5158 break; 5159 case HCI_STATE_HALTING: 5160 err = hci_power_control_state_halting(power_mode); 5161 break; 5162 case HCI_STATE_FALLING_ASLEEP: 5163 err = hci_power_control_state_falling_asleep(power_mode); 5164 break; 5165 case HCI_STATE_SLEEPING: 5166 err = hci_power_control_state_sleeping(power_mode); 5167 break; 5168 default: 5169 btstack_assert(false); 5170 break; 5171 } 5172 if (err != 0){ 5173 return err; 5174 } 5175 5176 // create internal event 5177 hci_emit_state(); 5178 5179 // trigger next/first action 5180 hci_run(); 5181 5182 return 0; 5183 } 5184 5185 5186 static void hci_halting_run(void) { 5187 5188 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5189 5190 hci_connection_t *connection; 5191 #ifdef ENABLE_BLE 5192 #ifdef ENABLE_LE_PERIPHERAL 5193 bool stop_advertismenets; 5194 #endif 5195 #endif 5196 5197 switch (hci_stack->substate) { 5198 case HCI_HALTING_CLASSIC_STOP: 5199 #ifdef ENABLE_CLASSIC 5200 if (!hci_can_send_command_packet_now()) return; 5201 5202 if (hci_stack->connectable || hci_stack->discoverable){ 5203 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5204 hci_send_cmd(&hci_write_scan_enable, 0); 5205 return; 5206 } 5207 #endif 5208 /* fall through */ 5209 5210 case HCI_HALTING_LE_ADV_STOP: 5211 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5212 5213 #ifdef ENABLE_BLE 5214 #ifdef ENABLE_LE_PERIPHERAL 5215 if (!hci_can_send_command_packet_now()) return; 5216 5217 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5218 5219 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5220 if (hci_extended_advertising_supported()){ 5221 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5222 btstack_linked_list_iterator_t it; 5223 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5224 // stop all periodic advertisements and check if an extended set is active 5225 while (btstack_linked_list_iterator_has_next(&it)){ 5226 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5227 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5228 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5229 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5230 return; 5231 } 5232 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5233 stop_advertismenets = true; 5234 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5235 } 5236 } 5237 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5238 if (stop_advertismenets){ 5239 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5240 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5241 return; 5242 } 5243 } else 5244 #else /* ENABLE_LE_PERIPHERAL */ 5245 { 5246 if (stop_advertismenets) { 5247 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5248 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5249 return; 5250 } 5251 } 5252 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5253 #endif /* ENABLE_LE_PERIPHERAL */ 5254 #endif /* ENABLE_BLE */ 5255 5256 /* fall through */ 5257 5258 case HCI_HALTING_LE_SCAN_STOP: 5259 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5260 if (!hci_can_send_command_packet_now()) return; 5261 5262 #ifdef ENABLE_BLE 5263 #ifdef ENABLE_LE_CENTRAL 5264 if (hci_stack->le_scanning_active){ 5265 hci_le_scan_stop(); 5266 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5267 return; 5268 } 5269 #endif 5270 #endif 5271 5272 /* fall through */ 5273 5274 case HCI_HALTING_DISCONNECT_ALL: 5275 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5276 if (!hci_can_send_command_packet_now()) return; 5277 5278 // close all open connections 5279 connection = (hci_connection_t *) hci_stack->connections; 5280 if (connection) { 5281 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5282 5283 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5284 5285 // check state 5286 switch(connection->state) { 5287 case SENT_DISCONNECT: 5288 case RECEIVED_DISCONNECTION_COMPLETE: 5289 // wait until connection is gone 5290 return; 5291 default: 5292 break; 5293 } 5294 5295 // finally, send the disconnect command 5296 connection->state = SENT_DISCONNECT; 5297 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5298 return; 5299 } 5300 5301 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5302 // stop BIGs and BIG Syncs 5303 if (hci_stack->le_audio_bigs != NULL){ 5304 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5305 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5306 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5307 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5308 return; 5309 } 5310 if (hci_stack->le_audio_big_syncs != NULL){ 5311 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5312 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5313 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5314 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5315 return; 5316 } 5317 #endif 5318 5319 btstack_run_loop_remove_timer(&hci_stack->timeout); 5320 5321 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5322 log_info("HCI_STATE_HALTING: wait 50 ms"); 5323 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5324 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5325 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5326 btstack_run_loop_add_timer(&hci_stack->timeout); 5327 break; 5328 5329 case HCI_HALTING_W4_CLOSE_TIMER: 5330 // keep waiting 5331 break; 5332 5333 case HCI_HALTING_CLOSE: 5334 // close left over connections (that had not been properly closed before) 5335 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5336 hci_discard_connections(); 5337 5338 log_info("HCI_STATE_HALTING, calling off"); 5339 5340 // switch mode 5341 hci_power_control_off(); 5342 5343 log_info("HCI_STATE_HALTING, emitting state"); 5344 hci_emit_state(); 5345 log_info("HCI_STATE_HALTING, done"); 5346 break; 5347 5348 default: 5349 break; 5350 } 5351 }; 5352 5353 static void hci_falling_asleep_run(void){ 5354 hci_connection_t * connection; 5355 switch(hci_stack->substate) { 5356 case HCI_FALLING_ASLEEP_DISCONNECT: 5357 log_info("HCI_STATE_FALLING_ASLEEP"); 5358 // close all open connections 5359 connection = (hci_connection_t *) hci_stack->connections; 5360 if (connection){ 5361 5362 // send disconnect 5363 if (!hci_can_send_command_packet_now()) return; 5364 5365 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5366 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5367 5368 // send disconnected event right away - causes higher layer connections to get closed, too. 5369 hci_shutdown_connection(connection); 5370 return; 5371 } 5372 5373 if (hci_classic_supported()){ 5374 // disable page and inquiry scan 5375 if (!hci_can_send_command_packet_now()) return; 5376 5377 log_info("HCI_STATE_HALTING, disabling inq scans"); 5378 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5379 5380 // continue in next sub state 5381 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5382 break; 5383 } 5384 5385 /* fall through */ 5386 5387 case HCI_FALLING_ASLEEP_COMPLETE: 5388 log_info("HCI_STATE_HALTING, calling sleep"); 5389 // switch mode 5390 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5391 hci_emit_state(); 5392 break; 5393 5394 default: 5395 break; 5396 } 5397 } 5398 5399 #ifdef ENABLE_CLASSIC 5400 5401 static void hci_update_scan_enable(void){ 5402 // 2 = page scan, 1 = inq scan 5403 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5404 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5405 hci_run(); 5406 } 5407 5408 void gap_discoverable_control(uint8_t enable){ 5409 if (enable) enable = 1; // normalize argument 5410 5411 if (hci_stack->discoverable == enable){ 5412 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5413 return; 5414 } 5415 5416 hci_stack->discoverable = enable; 5417 hci_update_scan_enable(); 5418 } 5419 5420 void gap_connectable_control(uint8_t enable){ 5421 if (enable) enable = 1; // normalize argument 5422 5423 // don't emit event 5424 if (hci_stack->connectable == enable) return; 5425 5426 hci_stack->connectable = enable; 5427 hci_update_scan_enable(); 5428 } 5429 #endif 5430 5431 void gap_local_bd_addr(bd_addr_t address_buffer){ 5432 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5433 } 5434 5435 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5436 static void hci_host_num_completed_packets(void){ 5437 5438 // create packet manually as arrays are not supported and num_commands should not get reduced 5439 hci_reserve_packet_buffer(); 5440 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5441 5442 uint16_t size = 0; 5443 uint16_t num_handles = 0; 5444 packet[size++] = 0x35; 5445 packet[size++] = 0x0c; 5446 size++; // skip param len 5447 size++; // skip num handles 5448 5449 // add { handle, packets } entries 5450 btstack_linked_item_t * it; 5451 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5452 hci_connection_t * connection = (hci_connection_t *) it; 5453 if (connection->num_packets_completed){ 5454 little_endian_store_16(packet, size, connection->con_handle); 5455 size += 2; 5456 little_endian_store_16(packet, size, connection->num_packets_completed); 5457 size += 2; 5458 // 5459 num_handles++; 5460 connection->num_packets_completed = 0; 5461 } 5462 } 5463 5464 packet[2] = size - 3; 5465 packet[3] = num_handles; 5466 5467 hci_stack->host_completed_packets = 0; 5468 5469 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5470 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5471 5472 // release packet buffer for synchronous transport implementations 5473 if (hci_transport_synchronous()){ 5474 hci_release_packet_buffer(); 5475 hci_emit_transport_packet_sent(); 5476 } 5477 } 5478 #endif 5479 5480 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5481 UNUSED(ds); 5482 hci_stack->substate = HCI_HALTING_CLOSE; 5483 hci_halting_run(); 5484 } 5485 5486 static bool hci_run_acl_fragments(void){ 5487 if (hci_stack->acl_fragmentation_total_size > 0u) { 5488 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5489 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5490 if (connection) { 5491 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5492 hci_send_acl_packet_fragments(connection); 5493 return true; 5494 } 5495 } else { 5496 // connection gone -> discard further fragments 5497 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5498 hci_stack->acl_fragmentation_total_size = 0; 5499 hci_stack->acl_fragmentation_pos = 0; 5500 } 5501 } 5502 return false; 5503 } 5504 5505 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5506 static bool hci_run_iso_fragments(void){ 5507 if (hci_stack->iso_fragmentation_total_size > 0u) { 5508 // TODO: flow control 5509 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5510 hci_send_iso_packet_fragments(); 5511 return true; 5512 } 5513 } 5514 return false; 5515 } 5516 #endif 5517 5518 #ifdef ENABLE_CLASSIC 5519 5520 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5521 static bool hci_classic_operation_active(void) { 5522 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5523 return true; 5524 } 5525 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5526 return true; 5527 } 5528 btstack_linked_item_t * it; 5529 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5530 hci_connection_t *connection = (hci_connection_t *) it; 5531 switch (connection->state) { 5532 case SENT_CREATE_CONNECTION: 5533 case SENT_CANCEL_CONNECTION: 5534 case SENT_DISCONNECT: 5535 return true; 5536 default: 5537 break; 5538 } 5539 } 5540 return false; 5541 } 5542 #endif 5543 5544 static bool hci_run_general_gap_classic(void){ 5545 5546 // assert stack is working and classic is active 5547 if (hci_classic_supported() == false) return false; 5548 if (hci_stack->state != HCI_STATE_WORKING) return false; 5549 5550 // decline incoming connections 5551 if (hci_stack->decline_reason){ 5552 uint8_t reason = hci_stack->decline_reason; 5553 hci_stack->decline_reason = 0; 5554 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5555 return true; 5556 } 5557 5558 if (hci_stack->gap_tasks_classic != 0){ 5559 hci_run_gap_tasks_classic(); 5560 return true; 5561 } 5562 5563 // start/stop inquiry 5564 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5565 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5566 if (hci_classic_operation_active() == false) 5567 #endif 5568 { 5569 uint8_t duration = hci_stack->inquiry_state; 5570 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5571 if (hci_stack->inquiry_max_period_length != 0){ 5572 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); 5573 } else { 5574 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5575 } 5576 return true; 5577 } 5578 } 5579 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5580 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5581 hci_send_cmd(&hci_inquiry_cancel); 5582 return true; 5583 } 5584 5585 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5586 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5587 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5588 return true; 5589 } 5590 5591 // remote name request 5592 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5593 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5594 if (hci_classic_operation_active() == false) 5595 #endif 5596 { 5597 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5598 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5599 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5600 return true; 5601 } 5602 } 5603 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5604 // Local OOB data 5605 if (hci_stack->classic_read_local_oob_data){ 5606 hci_stack->classic_read_local_oob_data = false; 5607 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5608 hci_send_cmd(&hci_read_local_extended_oob_data); 5609 } else { 5610 hci_send_cmd(&hci_read_local_oob_data); 5611 } 5612 } 5613 #endif 5614 // pairing 5615 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5616 uint8_t state = hci_stack->gap_pairing_state; 5617 uint8_t pin_code[16]; 5618 switch (state){ 5619 case GAP_PAIRING_STATE_SEND_PIN: 5620 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5621 memset(pin_code, 0, 16); 5622 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5623 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5624 break; 5625 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5626 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5627 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5628 break; 5629 case GAP_PAIRING_STATE_SEND_PASSKEY: 5630 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5631 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5632 break; 5633 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5634 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5635 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5636 break; 5637 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5638 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5639 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5640 break; 5641 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5642 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5643 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5644 break; 5645 default: 5646 break; 5647 } 5648 return true; 5649 } 5650 return false; 5651 } 5652 #endif 5653 5654 #ifdef ENABLE_BLE 5655 5656 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5657 static uint8_t hci_le_num_phys(uint8_t phys){ 5658 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5659 btstack_assert(phys); 5660 return num_bits_set[phys]; 5661 } 5662 #endif 5663 5664 #ifdef ENABLE_LE_CENTRAL 5665 static void hci_le_scan_stop(void){ 5666 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5667 if (hci_extended_advertising_supported()) { 5668 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5669 } else 5670 #endif 5671 { 5672 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5673 } 5674 } 5675 5676 static void 5677 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5678 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5679 if (hci_extended_advertising_supported()) { 5680 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5681 uint16_t le_connection_scan_interval[3]; 5682 uint16_t le_connection_scan_window[3]; 5683 uint16_t le_connection_interval_min[3]; 5684 uint16_t le_connection_interval_max[3]; 5685 uint16_t le_connection_latency[3]; 5686 uint16_t le_supervision_timeout[3]; 5687 uint16_t le_minimum_ce_length[3]; 5688 uint16_t le_maximum_ce_length[3]; 5689 5690 uint8_t i; 5691 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5692 for (i=0;i<num_phys;i++){ 5693 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5694 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5695 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5696 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5697 le_connection_latency[i] = hci_stack->le_connection_latency; 5698 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5699 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5700 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5701 } 5702 hci_send_cmd(&hci_le_extended_create_connection, 5703 initiator_filter_policy, 5704 hci_stack->le_connection_own_addr_type, // our addr type: 5705 address_type, // peer address type 5706 address, // peer bd addr 5707 hci_stack->le_connection_phys, // initiating PHY 5708 le_connection_scan_interval, // conn scan interval 5709 le_connection_scan_window, // conn scan windows 5710 le_connection_interval_min, // conn interval min 5711 le_connection_interval_max, // conn interval max 5712 le_connection_latency, // conn latency 5713 le_supervision_timeout, // conn latency 5714 le_minimum_ce_length, // min ce length 5715 le_maximum_ce_length // max ce length 5716 ); 5717 } else 5718 #endif 5719 { 5720 hci_send_cmd(&hci_le_create_connection, 5721 hci_stack->le_connection_scan_interval, // conn scan interval 5722 hci_stack->le_connection_scan_window, // conn scan windows 5723 initiator_filter_policy, // don't use whitelist 5724 address_type, // peer address type 5725 address, // peer bd addr 5726 hci_stack->le_connection_own_addr_type, // our addr type: 5727 hci_stack->le_connection_interval_min, // conn interval min 5728 hci_stack->le_connection_interval_max, // conn interval max 5729 hci_stack->le_connection_latency, // conn latency 5730 hci_stack->le_supervision_timeout, // conn latency 5731 hci_stack->le_minimum_ce_length, // min ce length 5732 hci_stack->le_maximum_ce_length // max ce length 5733 ); 5734 } 5735 } 5736 #endif 5737 5738 #ifdef ENABLE_LE_PERIPHERAL 5739 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5740 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5741 uint8_t operation = 0; 5742 if (pos == 0){ 5743 // first fragment or complete data 5744 operation |= 1; 5745 } 5746 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5747 // last fragment or complete data 5748 operation |= 2; 5749 } 5750 return operation; 5751 } 5752 #endif 5753 #endif 5754 5755 static bool hci_run_general_gap_le(void){ 5756 5757 btstack_linked_list_iterator_t lit; 5758 5759 // Phase 1: collect what to stop 5760 5761 #ifdef ENABLE_LE_CENTRAL 5762 bool scanning_stop = false; 5763 bool connecting_stop = false; 5764 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5765 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5766 bool periodic_sync_stop = false; 5767 #endif 5768 #endif 5769 #endif 5770 5771 #ifdef ENABLE_LE_PERIPHERAL 5772 bool advertising_stop = false; 5773 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5774 le_advertising_set_t * advertising_stop_set = NULL; 5775 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5776 bool periodic_advertising_stop = false; 5777 #endif 5778 #endif 5779 #endif 5780 5781 // check if own address changes 5782 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 5783 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 5784 5785 // check if whitelist needs modification 5786 bool whitelist_modification_pending = false; 5787 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5788 while (btstack_linked_list_iterator_has_next(&lit)){ 5789 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5790 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5791 whitelist_modification_pending = true; 5792 break; 5793 } 5794 } 5795 5796 // check if resolving list needs modification 5797 bool resolving_list_modification_pending = false; 5798 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5799 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5800 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5801 resolving_list_modification_pending = true; 5802 } 5803 #endif 5804 5805 #ifdef ENABLE_LE_CENTRAL 5806 5807 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5808 // check if periodic advertiser list needs modification 5809 bool periodic_list_modification_pending = false; 5810 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5811 while (btstack_linked_list_iterator_has_next(&lit)){ 5812 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5813 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5814 periodic_list_modification_pending = true; 5815 break; 5816 } 5817 } 5818 #endif 5819 5820 // scanning control 5821 if (hci_stack->le_scanning_active) { 5822 // stop if: 5823 // - parameter change required 5824 // - it's disabled 5825 // - whitelist change required but used for scanning 5826 // - resolving list modified 5827 // - own address changes 5828 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5829 if ((hci_stack->le_scanning_param_update) || 5830 !hci_stack->le_scanning_enabled || 5831 (scanning_uses_whitelist && whitelist_modification_pending) || 5832 resolving_list_modification_pending || 5833 random_address_change){ 5834 5835 scanning_stop = true; 5836 } 5837 } 5838 5839 // connecting control 5840 bool connecting_with_whitelist; 5841 switch (hci_stack->le_connecting_state){ 5842 case LE_CONNECTING_DIRECT: 5843 case LE_CONNECTING_WHITELIST: 5844 // stop connecting if: 5845 // - connecting uses white and whitelist modification pending 5846 // - if it got disabled 5847 // - resolving list modified 5848 // - own address changes 5849 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5850 if ((connecting_with_whitelist && whitelist_modification_pending) || 5851 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5852 resolving_list_modification_pending || 5853 random_address_change) { 5854 5855 connecting_stop = true; 5856 } 5857 break; 5858 default: 5859 break; 5860 } 5861 5862 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5863 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5864 // periodic sync control 5865 bool sync_with_advertiser_list; 5866 switch(hci_stack->le_periodic_sync_state){ 5867 case LE_CONNECTING_DIRECT: 5868 case LE_CONNECTING_WHITELIST: 5869 // stop sync if: 5870 // - sync with advertiser list and advertiser list modification pending 5871 // - if it got disabled 5872 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5873 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5874 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5875 periodic_sync_stop = true; 5876 } 5877 break; 5878 default: 5879 break; 5880 } 5881 #endif 5882 #endif 5883 5884 #endif /* ENABLE_LE_CENTRAL */ 5885 5886 #ifdef ENABLE_LE_PERIPHERAL 5887 // le advertisement control 5888 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5889 // stop if: 5890 // - parameter change required 5891 // - random address used in advertising and changes 5892 // - it's disabled 5893 // - whitelist change required but used for advertisement filter policy 5894 // - resolving list modified 5895 // - own address changes 5896 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5897 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5898 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5899 if (advertising_change || 5900 (advertising_uses_random_address && random_address_change) || 5901 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5902 (advertising_uses_whitelist && whitelist_modification_pending) || 5903 resolving_list_modification_pending || 5904 random_address_change) { 5905 5906 advertising_stop = true; 5907 } 5908 } 5909 5910 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5911 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5912 btstack_linked_list_iterator_t it; 5913 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5914 while (btstack_linked_list_iterator_has_next(&it)){ 5915 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5916 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5917 // stop if: 5918 // - parameter change required 5919 // - random address used in connectable advertising and changes 5920 // - it's disabled 5921 // - whitelist change required but used for advertisement filter policy 5922 // - resolving list modified 5923 // - own address changes 5924 // - advertisement set will be removed 5925 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5926 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5927 bool advertising_uses_random_address = 5928 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5929 advertising_connectable; 5930 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5931 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5932 bool advertising_set_random_address_change = 5933 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5934 bool advertising_set_will_be_removed = 5935 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5936 if (advertising_parameter_change || 5937 (advertising_uses_random_address && advertising_set_random_address_change) || 5938 (advertising_enabled == false) || 5939 (advertising_uses_whitelist && whitelist_modification_pending) || 5940 resolving_list_modification_pending || 5941 advertising_set_will_be_removed) { 5942 5943 advertising_stop = true; 5944 advertising_stop_set = advertising_set; 5945 break; 5946 } 5947 } 5948 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5949 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5950 // stop if: 5951 // - it's disabled 5952 // - parameter change required 5953 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5954 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5955 if ((periodic_enabled == false) || periodic_parameter_change){ 5956 periodic_advertising_stop = true; 5957 advertising_stop_set = advertising_set; 5958 } 5959 } 5960 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5961 } 5962 } 5963 #endif 5964 5965 #endif 5966 5967 5968 // Phase 2: stop everything that should be off during modifications 5969 5970 5971 // 2.1 Outgoing connection 5972 #ifdef ENABLE_LE_CENTRAL 5973 if (connecting_stop){ 5974 hci_send_cmd(&hci_le_create_connection_cancel); 5975 return true; 5976 } 5977 #endif 5978 5979 // 2.2 Scanning 5980 #ifdef ENABLE_LE_CENTRAL 5981 if (scanning_stop){ 5982 hci_stack->le_scanning_active = false; 5983 hci_le_scan_stop(); 5984 return true; 5985 } 5986 5987 // 2.3 Periodic Sync 5988 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5989 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5990 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5991 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5992 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5993 return true; 5994 } 5995 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5996 if (periodic_sync_stop){ 5997 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5998 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5999 return true; 6000 } 6001 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6002 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6003 #endif /* ENABLE_LE_CENTRAL */ 6004 6005 // 2.4 Advertising: legacy, extended, periodic 6006 #ifdef ENABLE_LE_PERIPHERAL 6007 if (advertising_stop){ 6008 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6009 if (hci_extended_advertising_supported()) { 6010 uint8_t advertising_stop_handle; 6011 if (advertising_stop_set != NULL){ 6012 advertising_stop_handle = advertising_stop_set->advertising_handle; 6013 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6014 } else { 6015 advertising_stop_handle = 0; 6016 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6017 } 6018 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6019 const uint16_t durations[] = { 0 }; 6020 const uint16_t max_events[] = { 0 }; 6021 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6022 } else 6023 #endif 6024 { 6025 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6026 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6027 } 6028 return true; 6029 } 6030 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6031 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6032 if (periodic_advertising_stop){ 6033 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6034 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6035 return true; 6036 } 6037 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6038 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6039 #endif /* ENABLE_LE_PERIPHERAL */ 6040 6041 6042 // Phase 3: modify 6043 6044 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6045 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6046 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6047 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6048 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6049 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6050 #endif 6051 return true; 6052 } 6053 6054 #ifdef ENABLE_LE_CENTRAL 6055 if (hci_stack->le_scanning_param_update){ 6056 hci_stack->le_scanning_param_update = false; 6057 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6058 if (hci_extended_advertising_supported()){ 6059 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6060 uint8_t scan_types[2]; 6061 uint16_t scan_intervals[2]; 6062 uint16_t scan_windows[2]; 6063 6064 uint8_t i; 6065 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6066 for (i=0;i<num_phys;i++){ 6067 scan_types[i] = hci_stack->le_scan_type; 6068 scan_intervals[i] = hci_stack->le_scan_interval; 6069 scan_windows[i] = hci_stack->le_scan_window; 6070 } 6071 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6072 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6073 } else 6074 #endif 6075 { 6076 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6077 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6078 } 6079 return true; 6080 } 6081 #endif 6082 6083 #ifdef ENABLE_LE_PERIPHERAL 6084 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6085 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6086 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6087 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6088 if (hci_extended_advertising_supported()){ 6089 // map advertisment type to advertising event properties 6090 uint16_t adv_event_properties = 0; 6091 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6092 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6093 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6094 } 6095 hci_stack->le_advertising_set_in_current_command = 0; 6096 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6097 0, 6098 adv_event_properties, 6099 hci_stack->le_advertisements_interval_min, 6100 hci_stack->le_advertisements_interval_max, 6101 hci_stack->le_advertisements_channel_map, 6102 hci_stack->le_advertisements_own_addr_type, 6103 hci_stack->le_advertisements_direct_address_type, 6104 hci_stack->le_advertisements_direct_address, 6105 hci_stack->le_advertisements_filter_policy, 6106 0x7f, // tx power: no preference 6107 0x01, // primary adv phy: LE 1M 6108 0, // secondary adv max skip 6109 0, // secondary adv phy 6110 0, // adv sid 6111 0 // scan request notification 6112 ); 6113 } else 6114 #endif 6115 { 6116 hci_send_cmd(&hci_le_set_advertising_parameters, 6117 hci_stack->le_advertisements_interval_min, 6118 hci_stack->le_advertisements_interval_max, 6119 hci_stack->le_advertisements_type, 6120 hci_stack->le_advertisements_own_addr_type, 6121 hci_stack->le_advertisements_direct_address_type, 6122 hci_stack->le_advertisements_direct_address, 6123 hci_stack->le_advertisements_channel_map, 6124 hci_stack->le_advertisements_filter_policy); 6125 } 6126 return true; 6127 } 6128 6129 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6130 // assumption: only set if extended advertising is supported 6131 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6132 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6133 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6134 return true; 6135 } 6136 #endif 6137 6138 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6139 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6140 uint8_t adv_data_clean[31]; 6141 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6142 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6143 hci_stack->le_advertisements_data_len); 6144 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6145 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6146 if (hci_extended_advertising_supported()){ 6147 hci_stack->le_advertising_set_in_current_command = 0; 6148 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6149 } else 6150 #endif 6151 { 6152 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6153 } 6154 return true; 6155 } 6156 6157 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6158 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6159 uint8_t scan_data_clean[31]; 6160 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6161 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6162 hci_stack->le_scan_response_data_len); 6163 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6164 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6165 if (hci_extended_advertising_supported()){ 6166 hci_stack->le_advertising_set_in_current_command = 0; 6167 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6168 } else 6169 #endif 6170 { 6171 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6172 } 6173 return true; 6174 } 6175 6176 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6177 if (hci_extended_advertising_supported()) { 6178 btstack_linked_list_iterator_t it; 6179 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6180 while (btstack_linked_list_iterator_has_next(&it)){ 6181 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6182 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6183 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6184 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6185 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6186 return true; 6187 } 6188 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6189 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6190 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6191 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6192 advertising_set->advertising_handle, 6193 advertising_set->extended_params.advertising_event_properties, 6194 advertising_set->extended_params.primary_advertising_interval_min, 6195 advertising_set->extended_params.primary_advertising_interval_max, 6196 advertising_set->extended_params.primary_advertising_channel_map, 6197 advertising_set->extended_params.own_address_type, 6198 advertising_set->extended_params.peer_address_type, 6199 advertising_set->extended_params.peer_address, 6200 advertising_set->extended_params.advertising_filter_policy, 6201 advertising_set->extended_params.advertising_tx_power, 6202 advertising_set->extended_params.primary_advertising_phy, 6203 advertising_set->extended_params.secondary_advertising_max_skip, 6204 advertising_set->extended_params.secondary_advertising_phy, 6205 advertising_set->extended_params.advertising_sid, 6206 advertising_set->extended_params.scan_request_notification_enable 6207 ); 6208 return true; 6209 } 6210 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6211 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6212 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6213 return true; 6214 } 6215 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6216 uint16_t pos = advertising_set->adv_data_pos; 6217 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6218 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6219 if ((operation & 0x02) != 0){ 6220 // last fragment or complete data 6221 operation |= 2; 6222 advertising_set->adv_data_pos = 0; 6223 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6224 } else { 6225 advertising_set->adv_data_pos += data_to_upload; 6226 } 6227 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6228 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6229 return true; 6230 } 6231 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6232 uint16_t pos = advertising_set->scan_data_pos; 6233 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6234 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6235 if ((operation & 0x02) != 0){ 6236 advertising_set->scan_data_pos = 0; 6237 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6238 } else { 6239 advertising_set->scan_data_pos += data_to_upload; 6240 } 6241 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6242 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6243 return true; 6244 } 6245 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6246 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6247 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6248 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6249 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6250 advertising_set->advertising_handle, 6251 advertising_set->periodic_params.periodic_advertising_interval_min, 6252 advertising_set->periodic_params.periodic_advertising_interval_max, 6253 advertising_set->periodic_params.periodic_advertising_properties); 6254 return true; 6255 } 6256 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6257 uint16_t pos = advertising_set->periodic_data_pos; 6258 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6259 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6260 if ((operation & 0x02) != 0){ 6261 // last fragment or complete data 6262 operation |= 2; 6263 advertising_set->periodic_data_pos = 0; 6264 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6265 } else { 6266 advertising_set->periodic_data_pos += data_to_upload; 6267 } 6268 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6269 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6270 return true; 6271 } 6272 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6273 } 6274 } 6275 #endif 6276 6277 #endif 6278 6279 #ifdef ENABLE_LE_CENTRAL 6280 // if connect with whitelist was active and is not cancelled yet, wait until next time 6281 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6282 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6283 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6284 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6285 #endif 6286 #endif 6287 6288 // LE Whitelist Management 6289 if (whitelist_modification_pending){ 6290 // add/remove entries 6291 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6292 while (btstack_linked_list_iterator_has_next(&lit)){ 6293 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6294 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6295 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6296 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 6297 return true; 6298 } 6299 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6300 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6301 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6302 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6303 return true; 6304 } 6305 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 6306 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6307 btstack_memory_whitelist_entry_free(entry); 6308 } 6309 } 6310 } 6311 6312 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6313 // LE Resolving List Management 6314 if (resolving_list_supported) { 6315 uint16_t i; 6316 switch (hci_stack->le_resolving_list_state) { 6317 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6318 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6319 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6320 return true; 6321 case LE_RESOLVING_LIST_READ_SIZE: 6322 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6323 hci_send_cmd(&hci_le_read_resolving_list_size); 6324 return true; 6325 case LE_RESOLVING_LIST_SEND_CLEAR: 6326 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6327 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6328 sizeof(hci_stack->le_resolving_list_add_entries)); 6329 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6330 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6331 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6332 sizeof(hci_stack->le_resolving_list_remove_entries)); 6333 hci_send_cmd(&hci_le_clear_resolving_list); 6334 return true; 6335 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6336 // first remove old entries 6337 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6338 uint8_t offset = i >> 3; 6339 uint8_t mask = 1 << (i & 7); 6340 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6341 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6342 bd_addr_t peer_identity_addreses; 6343 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6344 sm_key_t peer_irk; 6345 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6346 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6347 6348 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6349 // trigger whitelist entry 'update' (work around for controller bug) 6350 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6351 while (btstack_linked_list_iterator_has_next(&lit)) { 6352 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6353 if (entry->address_type != peer_identity_addr_type) continue; 6354 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6355 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6356 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6357 } 6358 #endif 6359 6360 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6361 peer_identity_addreses); 6362 return true; 6363 } 6364 6365 // then add new entries 6366 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6367 uint8_t offset = i >> 3; 6368 uint8_t mask = 1 << (i & 7); 6369 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6370 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6371 bd_addr_t peer_identity_addreses; 6372 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6373 sm_key_t peer_irk; 6374 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6375 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6376 if (btstack_is_null(peer_irk, 16)) continue; 6377 const uint8_t *local_irk = gap_get_persistent_irk(); 6378 // command uses format specifier 'P' that stores 16-byte value without flip 6379 uint8_t local_irk_flipped[16]; 6380 uint8_t peer_irk_flipped[16]; 6381 reverse_128(local_irk, local_irk_flipped); 6382 reverse_128(peer_irk, peer_irk_flipped); 6383 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6384 peer_irk_flipped, local_irk_flipped); 6385 return true; 6386 } 6387 6388 // finally, set privacy mode 6389 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6390 uint8_t offset = i >> 3; 6391 uint8_t mask = 1 << (i & 7); 6392 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6393 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6394 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6395 // Network Privacy Mode is default 6396 continue; 6397 } 6398 bd_addr_t peer_identity_address; 6399 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6400 sm_key_t peer_irk; 6401 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6402 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6403 if (btstack_is_null(peer_irk, 16)) continue; 6404 // command uses format specifier 'P' that stores 16-byte value without flip 6405 uint8_t peer_irk_flipped[16]; 6406 reverse_128(peer_irk, peer_irk_flipped); 6407 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6408 return true; 6409 } 6410 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6411 break; 6412 6413 default: 6414 break; 6415 } 6416 } 6417 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6418 #endif 6419 6420 #ifdef ENABLE_LE_CENTRAL 6421 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6422 // LE Whitelist Management 6423 if (periodic_list_modification_pending){ 6424 // add/remove entries 6425 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6426 while (btstack_linked_list_iterator_has_next(&lit)){ 6427 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6428 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6429 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6430 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6431 return true; 6432 } 6433 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6434 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6435 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6436 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6437 return true; 6438 } 6439 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6440 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6441 btstack_memory_periodic_advertiser_list_entry_free(entry); 6442 } 6443 } 6444 } 6445 #endif 6446 #endif 6447 6448 #ifdef ENABLE_LE_CENTRAL 6449 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6450 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6451 if (hci_stack->le_past_set_default_params){ 6452 hci_stack->le_past_set_default_params = false; 6453 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6454 hci_stack->le_past_mode, 6455 hci_stack->le_past_skip, 6456 hci_stack->le_past_sync_timeout, 6457 hci_stack->le_past_cte_type); 6458 return true; 6459 } 6460 #endif 6461 #endif 6462 #endif 6463 6464 // post-pone all actions until stack is fully working 6465 if (hci_stack->state != HCI_STATE_WORKING) return false; 6466 6467 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6468 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6469 6470 // Phase 4: restore state 6471 6472 #ifdef ENABLE_LE_CENTRAL 6473 // re-start scanning 6474 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6475 hci_stack->le_scanning_active = true; 6476 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6477 if (hci_extended_advertising_supported()){ 6478 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6479 } else 6480 #endif 6481 { 6482 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6483 } 6484 return true; 6485 } 6486 #endif 6487 6488 #ifdef ENABLE_LE_CENTRAL 6489 // re-start connecting 6490 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6491 bd_addr_t null_addr; 6492 memset(null_addr, 0, 6); 6493 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6494 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6495 hci_send_le_create_connection(1, 0, null_addr); 6496 return true; 6497 } 6498 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6499 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6500 switch(hci_stack->le_periodic_sync_request){ 6501 case LE_CONNECTING_DIRECT: 6502 case LE_CONNECTING_WHITELIST: 6503 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6504 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6505 hci_stack->le_periodic_sync_options, 6506 hci_stack->le_periodic_sync_advertising_sid, 6507 hci_stack->le_periodic_sync_advertiser_address_type, 6508 hci_stack->le_periodic_sync_advertiser_address, 6509 hci_stack->le_periodic_sync_skip, 6510 hci_stack->le_periodic_sync_timeout, 6511 hci_stack->le_periodic_sync_cte_type); 6512 return true; 6513 default: 6514 break; 6515 } 6516 } 6517 #endif 6518 #endif 6519 6520 #ifdef ENABLE_LE_PERIPHERAL 6521 // re-start advertising 6522 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6523 // check if advertisements should be enabled given 6524 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6525 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6526 6527 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6528 if (hci_extended_advertising_supported()){ 6529 const uint8_t advertising_handles[] = { 0 }; 6530 const uint16_t durations[] = { 0 }; 6531 const uint16_t max_events[] = { 0 }; 6532 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6533 } else 6534 #endif 6535 { 6536 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6537 } 6538 return true; 6539 } 6540 6541 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6542 if (hci_extended_advertising_supported()) { 6543 btstack_linked_list_iterator_t it; 6544 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6545 while (btstack_linked_list_iterator_has_next(&it)) { 6546 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6547 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6548 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6549 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6550 const uint16_t durations[] = { advertising_set->enable_timeout }; 6551 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6552 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6553 return true; 6554 } 6555 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6556 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6557 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6558 uint8_t enable = 1; 6559 if (advertising_set->periodic_include_adi){ 6560 enable |= 2; 6561 } 6562 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6563 return true; 6564 } 6565 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6566 } 6567 } 6568 #endif 6569 #endif 6570 6571 return false; 6572 } 6573 6574 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6575 static bool hci_run_iso_tasks(void){ 6576 btstack_linked_list_iterator_t it; 6577 6578 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6579 return false; 6580 } 6581 6582 // BIG 6583 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6584 while (btstack_linked_list_iterator_has_next(&it)){ 6585 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6586 switch (big->state){ 6587 case LE_AUDIO_BIG_STATE_CREATE: 6588 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6589 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6590 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6591 hci_send_cmd(&hci_le_create_big, 6592 big->params->big_handle, 6593 big->params->advertising_handle, 6594 big->params->num_bis, 6595 big->params->sdu_interval_us, 6596 big->params->max_sdu, 6597 big->params->max_transport_latency_ms, 6598 big->params->rtn, 6599 big->params->phy, 6600 big->params->packing, 6601 big->params->framing, 6602 big->params->encryption, 6603 big->params->broadcast_code); 6604 return true; 6605 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6606 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6607 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); 6608 return true; 6609 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6610 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6611 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6612 return true; 6613 case LE_AUDIO_BIG_STATE_TERMINATE: 6614 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6615 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6616 return true; 6617 default: 6618 break; 6619 } 6620 } 6621 6622 // BIG Sync 6623 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6624 while (btstack_linked_list_iterator_has_next(&it)){ 6625 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6626 switch (big_sync->state){ 6627 case LE_AUDIO_BIG_STATE_CREATE: 6628 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6629 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6630 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6631 hci_send_cmd(&hci_le_big_create_sync, 6632 big_sync->params->big_handle, 6633 big_sync->params->sync_handle, 6634 big_sync->params->encryption, 6635 big_sync->params->broadcast_code, 6636 big_sync->params->mse, 6637 big_sync->params->big_sync_timeout_10ms, 6638 big_sync->params->num_bis, 6639 big_sync->params->bis_indices); 6640 return true; 6641 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6642 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6643 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); 6644 return true; 6645 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6646 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6647 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6648 return true; 6649 case LE_AUDIO_BIG_STATE_TERMINATE: 6650 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6651 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6652 return true; 6653 default: 6654 break; 6655 } 6656 } 6657 6658 // CIG 6659 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6660 while (btstack_linked_list_iterator_has_next(&it)) { 6661 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6662 uint8_t i; 6663 // Set CIG Parameters 6664 uint8_t cis_id[MAX_NR_CIS]; 6665 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6666 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6667 uint8_t phy_c_to_p[MAX_NR_CIS]; 6668 uint8_t phy_p_to_c[MAX_NR_CIS]; 6669 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6670 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6671 switch (cig->state) { 6672 case LE_AUDIO_CIG_STATE_CREATE: 6673 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6674 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6675 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6676 le_audio_cig_params_t * params = cig->params; 6677 for (i = 0; i < params->num_cis; i++) { 6678 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6679 cis_id[i] = cis_params->cis_id; 6680 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6681 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6682 phy_c_to_p[i] = cis_params->phy_c_to_p; 6683 phy_p_to_c[i] = cis_params->phy_p_to_c; 6684 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6685 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6686 } 6687 hci_send_cmd(&hci_le_set_cig_parameters, 6688 cig->cig_id, 6689 params->sdu_interval_c_to_p, 6690 params->sdu_interval_p_to_c, 6691 params->worst_case_sca, 6692 params->packing, 6693 params->framing, 6694 params->max_transport_latency_c_to_p, 6695 params->max_transport_latency_p_to_c, 6696 params->num_cis, 6697 cis_id, 6698 max_sdu_c_to_p, 6699 max_sdu_p_to_c, 6700 phy_c_to_p, 6701 phy_p_to_c, 6702 rtn_c_to_p, 6703 rtn_p_to_c 6704 ); 6705 return true; 6706 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6707 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6708 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6709 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6710 for (i=0;i<cig->num_cis;i++){ 6711 cig->cis_setup_active[i] = true; 6712 } 6713 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6714 return true; 6715 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6716 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6717 // find next path to setup 6718 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6719 if (cig->cis_established[cis_index] == false) { 6720 continue; 6721 } 6722 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6723 bool setup = true; 6724 if (cis_direction == 0){ 6725 // 0 - input - host to controller 6726 // we are central => central to peripheral 6727 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6728 } else { 6729 // 1 - output - controller to host 6730 // we are central => peripheral to central 6731 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6732 } 6733 if (setup){ 6734 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6735 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6736 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6737 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, 0, 0, 0, 0, 0, NULL); 6738 return true; 6739 } 6740 cig->state_vars.next_cis++; 6741 } 6742 // emit done 6743 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6744 default: 6745 break; 6746 } 6747 } 6748 6749 // CIS Accept/Reject 6750 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6751 while (btstack_linked_list_iterator_has_next(&it)) { 6752 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6753 hci_con_handle_t con_handle; 6754 switch (iso_stream->state){ 6755 case HCI_ISO_STREAM_W2_ACCEPT: 6756 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6757 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6758 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6759 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 6760 return true; 6761 case HCI_ISO_STREAM_W2_REJECT: 6762 con_handle = iso_stream->cis_handle; 6763 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6764 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6765 hci_iso_stream_finalize(iso_stream); 6766 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6767 return true; 6768 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6769 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6770 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6771 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6772 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 0, 0, 0, 0, 0, 0, 0, NULL); 6773 break; 6774 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6775 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6776 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6777 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6778 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 1, 0, 0, 0, 0, 0, 0, NULL); 6779 break; 6780 default: 6781 break; 6782 } 6783 } 6784 6785 return false; 6786 } 6787 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6788 #endif 6789 6790 static bool hci_run_general_pending_commands(void){ 6791 btstack_linked_item_t * it; 6792 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6793 hci_connection_t * connection = (hci_connection_t *) it; 6794 6795 switch(connection->state){ 6796 case SEND_CREATE_CONNECTION: 6797 switch(connection->address_type){ 6798 #ifdef ENABLE_CLASSIC 6799 case BD_ADDR_TYPE_ACL: 6800 log_info("sending hci_create_connection"); 6801 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6802 break; 6803 #endif 6804 default: 6805 #ifdef ENABLE_BLE 6806 #ifdef ENABLE_LE_CENTRAL 6807 log_info("sending hci_le_create_connection"); 6808 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6809 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6810 hci_send_le_create_connection(0, connection->address_type, connection->address); 6811 connection->state = SENT_CREATE_CONNECTION; 6812 #endif 6813 #endif 6814 break; 6815 } 6816 return true; 6817 6818 #ifdef ENABLE_CLASSIC 6819 case RECEIVED_CONNECTION_REQUEST: 6820 connection->role = HCI_ROLE_SLAVE; 6821 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6822 log_info("sending hci_accept_connection_request"); 6823 connection->state = ACCEPTED_CONNECTION_REQUEST; 6824 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6825 return true; 6826 } 6827 break; 6828 #endif 6829 case SEND_DISCONNECT: 6830 connection->state = SENT_DISCONNECT; 6831 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6832 return true; 6833 6834 default: 6835 break; 6836 } 6837 6838 // no further commands if connection is about to get shut down 6839 if (connection->state == SENT_DISCONNECT) continue; 6840 6841 #ifdef ENABLE_CLASSIC 6842 6843 // Handling link key request requires remote supported features 6844 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6845 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6846 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6847 6848 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6849 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6850 if (have_link_key && security_level_sufficient){ 6851 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6852 } else { 6853 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6854 } 6855 return true; 6856 } 6857 6858 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6859 log_info("denying to pin request"); 6860 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6861 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6862 return true; 6863 } 6864 6865 // security assessment requires remote features 6866 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6867 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6868 hci_ssp_assess_security_on_io_cap_request(connection); 6869 // 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 6870 } 6871 6872 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6873 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6874 // set authentication requirements: 6875 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6876 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6877 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6878 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6879 authreq |= 1; 6880 } 6881 bool bonding = hci_stack->bondable; 6882 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6883 // if we have received IO Cap Response, we're in responder role 6884 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6885 if (bonding && !remote_bonding){ 6886 log_info("Remote not bonding, dropping local flag"); 6887 bonding = false; 6888 } 6889 } 6890 if (bonding){ 6891 if (connection->bonding_flags & BONDING_DEDICATED){ 6892 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6893 } else { 6894 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6895 } 6896 } 6897 uint8_t have_oob_data = 0; 6898 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6899 if (connection->classic_oob_c_192 != NULL){ 6900 have_oob_data |= 1; 6901 } 6902 if (connection->classic_oob_c_256 != NULL){ 6903 have_oob_data |= 2; 6904 } 6905 #endif 6906 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6907 return true; 6908 } 6909 6910 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6911 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6912 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6913 return true; 6914 } 6915 6916 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6917 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6918 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6919 const uint8_t zero[16] = { 0 }; 6920 const uint8_t * r_192 = zero; 6921 const uint8_t * c_192 = zero; 6922 const uint8_t * r_256 = zero; 6923 const uint8_t * c_256 = zero; 6924 // verify P-256 OOB 6925 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6926 c_256 = connection->classic_oob_c_256; 6927 if (connection->classic_oob_r_256 != NULL) { 6928 r_256 = connection->classic_oob_r_256; 6929 } 6930 } 6931 // verify P-192 OOB 6932 if ((connection->classic_oob_c_192 != NULL)) { 6933 c_192 = connection->classic_oob_c_192; 6934 if (connection->classic_oob_r_192 != NULL) { 6935 r_192 = connection->classic_oob_r_192; 6936 } 6937 } 6938 6939 // assess security 6940 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6941 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6942 if (need_level_4 && !can_reach_level_4){ 6943 log_info("Level 4 required, but not possible -> abort"); 6944 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6945 // send oob negative reply 6946 c_256 = NULL; 6947 c_192 = NULL; 6948 } 6949 6950 // Reply 6951 if (c_256 != zero) { 6952 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6953 } else if (c_192 != zero){ 6954 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6955 } else { 6956 hci_stack->classic_oob_con_handle = connection->con_handle; 6957 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6958 } 6959 return true; 6960 } 6961 #endif 6962 6963 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6964 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6965 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6966 return true; 6967 } 6968 6969 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6970 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6971 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6972 return true; 6973 } 6974 6975 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6976 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6977 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6978 return true; 6979 } 6980 6981 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6982 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6983 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6984 connection->state = SENT_DISCONNECT; 6985 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6986 return true; 6987 } 6988 6989 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6990 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6991 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6992 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6993 return true; 6994 } 6995 6996 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6997 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6998 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6999 return true; 7000 } 7001 7002 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7003 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7004 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7005 return true; 7006 } 7007 7008 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7009 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7010 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7011 return true; 7012 } 7013 7014 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7015 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7016 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7017 return true; 7018 } 7019 7020 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7021 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7022 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7023 return true; 7024 } 7025 #endif 7026 7027 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7028 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7029 #ifdef ENABLE_CLASSIC 7030 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7031 #endif 7032 if (connection->state != SENT_DISCONNECT){ 7033 connection->state = SENT_DISCONNECT; 7034 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7035 return true; 7036 } 7037 } 7038 7039 #ifdef ENABLE_CLASSIC 7040 uint16_t sniff_min_interval; 7041 switch (connection->sniff_min_interval){ 7042 case 0: 7043 break; 7044 case 0xffff: 7045 connection->sniff_min_interval = 0; 7046 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7047 return true; 7048 default: 7049 sniff_min_interval = connection->sniff_min_interval; 7050 connection->sniff_min_interval = 0; 7051 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7052 return true; 7053 } 7054 7055 if (connection->sniff_subrating_max_latency != 0xffff){ 7056 uint16_t max_latency = connection->sniff_subrating_max_latency; 7057 connection->sniff_subrating_max_latency = 0; 7058 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7059 return true; 7060 } 7061 7062 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7063 uint8_t service_type = (uint8_t) connection->qos_service_type; 7064 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7065 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); 7066 return true; 7067 } 7068 7069 if (connection->request_role != HCI_ROLE_INVALID){ 7070 hci_role_t role = connection->request_role; 7071 connection->request_role = HCI_ROLE_INVALID; 7072 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7073 return true; 7074 } 7075 #endif 7076 7077 if (connection->gap_connection_tasks != 0){ 7078 #ifdef ENABLE_CLASSIC 7079 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7080 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7081 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7082 return true; 7083 } 7084 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7085 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7086 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7087 return true; 7088 } 7089 #endif 7090 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7091 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7092 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7093 return true; 7094 } 7095 #ifdef ENABLE_BLE 7096 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7097 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7098 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7099 return true; 7100 } 7101 #endif 7102 } 7103 7104 #ifdef ENABLE_BLE 7105 switch (connection->le_con_parameter_update_state){ 7106 // response to L2CAP CON PARAMETER UPDATE REQUEST 7107 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7108 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7109 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7110 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7111 0x0000, 0xffff); 7112 return true; 7113 case CON_PARAMETER_UPDATE_REPLY: 7114 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7115 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7116 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7117 0x0000, 0xffff); 7118 return true; 7119 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7120 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7121 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7122 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7123 return true; 7124 default: 7125 break; 7126 } 7127 if (connection->le_phy_update_all_phys != 0xffu){ 7128 uint8_t all_phys = connection->le_phy_update_all_phys; 7129 connection->le_phy_update_all_phys = 0xff; 7130 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); 7131 return true; 7132 } 7133 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7134 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7135 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7136 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7137 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7138 return true; 7139 } 7140 #endif 7141 #endif 7142 } 7143 return false; 7144 } 7145 7146 static void hci_run(void){ 7147 7148 // stack state sub statemachines 7149 switch (hci_stack->state) { 7150 case HCI_STATE_INITIALIZING: 7151 hci_initializing_run(); 7152 break; 7153 case HCI_STATE_HALTING: 7154 hci_halting_run(); 7155 break; 7156 case HCI_STATE_FALLING_ASLEEP: 7157 hci_falling_asleep_run(); 7158 break; 7159 default: 7160 break; 7161 } 7162 7163 // allow to run after initialization to working transition 7164 if (hci_stack->state != HCI_STATE_WORKING){ 7165 return; 7166 } 7167 7168 bool done; 7169 7170 // send continuation fragments first, as they block the prepared packet buffer 7171 done = hci_run_acl_fragments(); 7172 if (done) return; 7173 7174 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7175 done = hci_run_iso_fragments(); 7176 if (done) return; 7177 #endif 7178 7179 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7180 // send host num completed packets next as they don't require num_cmd_packets > 0 7181 if (!hci_can_send_comand_packet_transport()) return; 7182 if (hci_stack->host_completed_packets){ 7183 hci_host_num_completed_packets(); 7184 return; 7185 } 7186 #endif 7187 7188 if (!hci_can_send_command_packet_now()) return; 7189 7190 // global/non-connection oriented commands 7191 7192 7193 #ifdef ENABLE_CLASSIC 7194 // general gap classic 7195 done = hci_run_general_gap_classic(); 7196 if (done) return; 7197 #endif 7198 7199 #ifdef ENABLE_BLE 7200 // general gap le 7201 done = hci_run_general_gap_le(); 7202 if (done) return; 7203 7204 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7205 // ISO related tasks, e.g. BIG create/terminate/sync 7206 done = hci_run_iso_tasks(); 7207 if (done) return; 7208 #endif 7209 #endif 7210 7211 // send pending HCI commands 7212 hci_run_general_pending_commands(); 7213 } 7214 7215 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7216 // house-keeping 7217 7218 #ifdef ENABLE_CLASSIC 7219 bd_addr_t addr; 7220 hci_connection_t * conn; 7221 #endif 7222 #ifdef ENABLE_LE_CENTRAL 7223 uint8_t initiator_filter_policy; 7224 #endif 7225 7226 uint16_t opcode = little_endian_read_16(packet, 0); 7227 switch (opcode) { 7228 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7229 hci_stack->loopback_mode = packet[3]; 7230 break; 7231 7232 #ifdef ENABLE_CLASSIC 7233 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7234 reverse_bd_addr(&packet[3], addr); 7235 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7236 7237 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7238 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7239 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7240 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7241 } 7242 7243 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7244 if (!conn) { 7245 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7246 if (!conn) { 7247 // notify client that alloc failed 7248 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7249 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7250 } 7251 conn->state = SEND_CREATE_CONNECTION; 7252 conn->role = HCI_ROLE_MASTER; 7253 } 7254 7255 log_info("conn state %u", conn->state); 7256 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7257 switch (conn->state) { 7258 // if connection active exists 7259 case OPEN: 7260 // and OPEN, emit connection complete command 7261 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7262 // packet not sent to controller 7263 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7264 case RECEIVED_DISCONNECTION_COMPLETE: 7265 // create connection triggered in disconnect complete event, let's do it now 7266 break; 7267 case SEND_CREATE_CONNECTION: 7268 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7269 if (hci_classic_operation_active()){ 7270 return ERROR_CODE_SUCCESS; 7271 } 7272 #endif 7273 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7274 break; 7275 default: 7276 // otherwise, just ignore as it is already in the open process 7277 // packet not sent to controller 7278 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7279 } 7280 conn->state = SENT_CREATE_CONNECTION; 7281 7282 // track outgoing connection 7283 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7284 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7285 break; 7286 7287 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 7288 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7289 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7290 if (conn == NULL) { 7291 // neither SCO nor ACL connection for con handle 7292 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7293 } else { 7294 switch (conn->address_type){ 7295 case BD_ADDR_TYPE_ACL: 7296 // assert SCO connection does not exit 7297 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7298 return ERROR_CODE_COMMAND_DISALLOWED; 7299 } 7300 // allocate connection struct 7301 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO); 7302 if (!conn) { 7303 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7304 } 7305 conn->role = HCI_ROLE_MASTER; 7306 break; 7307 case BD_ADDR_TYPE_SCO: 7308 // update of existing SCO connection 7309 break; 7310 default: 7311 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7312 } 7313 } 7314 7315 // conn refers to hci connection of type sco now 7316 7317 conn->state = SENT_CREATE_CONNECTION; 7318 7319 // track outgoing connection to handle command status with error 7320 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7321 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7322 7323 // setup_synchronous_connection? Voice setting at offset 22 7324 // TODO: compare to current setting if sco connection already active 7325 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7326 break; 7327 7328 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7329 // get SCO connection 7330 reverse_bd_addr(&packet[3], addr); 7331 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7332 if (conn == NULL){ 7333 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7334 } 7335 7336 conn->state = ACCEPTED_CONNECTION_REQUEST; 7337 7338 // track outgoing connection to handle command status with error 7339 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7340 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7341 7342 // accept_synchronous_connection? Voice setting at offset 18 7343 // TODO: compare to current setting if sco connection already active 7344 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7345 break; 7346 #endif 7347 #endif 7348 7349 #ifdef ENABLE_BLE 7350 #ifdef ENABLE_LE_CENTRAL 7351 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7352 // white list used? 7353 initiator_filter_policy = packet[7]; 7354 switch (initiator_filter_policy) { 7355 case 0: 7356 // whitelist not used 7357 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7358 break; 7359 case 1: 7360 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7361 break; 7362 default: 7363 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7364 break; 7365 } 7366 // track outgoing connection 7367 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7368 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7369 break; 7370 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7371 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7372 // white list used? 7373 initiator_filter_policy = packet[3]; 7374 switch (initiator_filter_policy) { 7375 case 0: 7376 // whitelist not used 7377 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7378 break; 7379 case 1: 7380 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7381 break; 7382 default: 7383 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7384 break; 7385 } 7386 // track outgoing connection 7387 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7388 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7389 break; 7390 #endif 7391 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7392 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7393 break; 7394 #endif 7395 #endif /* ENABLE_BLE */ 7396 default: 7397 break; 7398 } 7399 7400 hci_stack->num_cmd_packets--; 7401 7402 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7403 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7404 if (err != 0){ 7405 return ERROR_CODE_HARDWARE_FAILURE; 7406 } 7407 return ERROR_CODE_SUCCESS; 7408 } 7409 7410 // disconnect because of security block 7411 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7412 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7413 if (!connection) return; 7414 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7415 } 7416 7417 7418 // Configure Secure Simple Pairing 7419 7420 #ifdef ENABLE_CLASSIC 7421 7422 // enable will enable SSP during init 7423 void gap_ssp_set_enable(int enable){ 7424 hci_stack->ssp_enable = enable; 7425 } 7426 7427 static int hci_local_ssp_activated(void){ 7428 return gap_ssp_supported() && hci_stack->ssp_enable; 7429 } 7430 7431 // if set, BTstack will respond to io capability request using authentication requirement 7432 void gap_ssp_set_io_capability(int io_capability){ 7433 hci_stack->ssp_io_capability = io_capability; 7434 } 7435 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7436 hci_stack->ssp_authentication_requirement = authentication_requirement; 7437 } 7438 7439 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7440 void gap_ssp_set_auto_accept(int auto_accept){ 7441 hci_stack->ssp_auto_accept = auto_accept; 7442 } 7443 7444 void gap_secure_connections_enable(bool enable){ 7445 hci_stack->secure_connections_enable = enable; 7446 } 7447 bool gap_secure_connections_active(void){ 7448 return hci_stack->secure_connections_active; 7449 } 7450 7451 #endif 7452 7453 // va_list part of hci_send_cmd 7454 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7455 if (!hci_can_send_command_packet_now()){ 7456 log_error("hci_send_cmd called but cannot send packet now"); 7457 return ERROR_CODE_COMMAND_DISALLOWED; 7458 } 7459 7460 // for HCI INITIALIZATION 7461 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7462 hci_stack->last_cmd_opcode = cmd->opcode; 7463 7464 hci_reserve_packet_buffer(); 7465 uint8_t * packet = hci_stack->hci_packet_buffer; 7466 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7467 uint8_t status = hci_send_cmd_packet(packet, size); 7468 7469 // release packet buffer on error or for synchronous transport implementations 7470 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7471 hci_release_packet_buffer(); 7472 hci_emit_transport_packet_sent(); 7473 } 7474 7475 return status; 7476 } 7477 7478 /** 7479 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7480 */ 7481 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7482 va_list argptr; 7483 va_start(argptr, cmd); 7484 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7485 va_end(argptr); 7486 return status; 7487 } 7488 7489 // Create various non-HCI events. 7490 // TODO: generalize, use table similar to hci_create_command 7491 7492 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7493 // dump packet 7494 if (dump) { 7495 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7496 } 7497 7498 // dispatch to all event handlers 7499 btstack_linked_list_iterator_t it; 7500 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7501 while (btstack_linked_list_iterator_has_next(&it)){ 7502 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7503 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7504 } 7505 } 7506 7507 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7508 if (!hci_stack->acl_packet_handler) return; 7509 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7510 } 7511 7512 #ifdef ENABLE_CLASSIC 7513 static void hci_notify_if_sco_can_send_now(void){ 7514 // notify SCO sender if waiting 7515 if (!hci_stack->sco_waiting_for_can_send_now) return; 7516 if (hci_can_send_sco_packet_now()){ 7517 hci_stack->sco_waiting_for_can_send_now = 0; 7518 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7519 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7520 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7521 } 7522 } 7523 7524 // parsing end emitting has been merged to reduce code size 7525 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7526 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7527 7528 uint8_t * eir_data; 7529 ad_context_t context; 7530 const uint8_t * name; 7531 uint8_t name_len; 7532 7533 if (size < 3) return; 7534 7535 int event_type = hci_event_packet_get_type(packet); 7536 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7537 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7538 7539 switch (event_type){ 7540 case HCI_EVENT_INQUIRY_RESULT: 7541 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7542 if (size != (3 + (num_responses * 14))) return; 7543 break; 7544 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7545 if (size != 257) return; 7546 if (num_responses != 1) return; 7547 break; 7548 default: 7549 return; 7550 } 7551 7552 // event[1] is set at the end 7553 int i; 7554 for (i=0; i<num_responses;i++){ 7555 memset(event, 0, sizeof(event)); 7556 event[0] = GAP_EVENT_INQUIRY_RESULT; 7557 uint8_t event_size = 27; // if name is not set by EIR 7558 7559 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7560 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7561 (void)memcpy(&event[9], 7562 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7563 3); // class of device 7564 (void)memcpy(&event[12], 7565 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7566 2); // clock offset 7567 7568 switch (event_type){ 7569 case HCI_EVENT_INQUIRY_RESULT: 7570 // 14,15,16,17 = 0, size 18 7571 break; 7572 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7573 event[14] = 1; 7574 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7575 // 16,17 = 0, size 18 7576 break; 7577 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7578 event[14] = 1; 7579 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7580 // EIR packets only contain a single inquiry response 7581 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7582 name = NULL; 7583 // Iterate over EIR data 7584 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7585 uint8_t data_type = ad_iterator_get_data_type(&context); 7586 uint8_t data_size = ad_iterator_get_data_len(&context); 7587 const uint8_t * data = ad_iterator_get_data(&context); 7588 // Prefer Complete Local Name over Shortened Local Name 7589 switch (data_type){ 7590 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7591 if (name) continue; 7592 /* fall through */ 7593 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7594 name = data; 7595 name_len = data_size; 7596 break; 7597 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7598 if (data_size != 8) break; 7599 event[16] = 1; 7600 memcpy(&event[17], data, 8); 7601 break; 7602 default: 7603 break; 7604 } 7605 } 7606 if (name){ 7607 event[25] = 1; 7608 // truncate name if needed 7609 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7610 event[26] = len; 7611 (void)memcpy(&event[27], name, len); 7612 event_size += len; 7613 } 7614 break; 7615 default: 7616 return; 7617 } 7618 event[1] = event_size - 2; 7619 hci_emit_event(event, event_size, 1); 7620 } 7621 } 7622 #endif 7623 7624 void hci_emit_state(void){ 7625 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7626 uint8_t event[3]; 7627 event[0] = BTSTACK_EVENT_STATE; 7628 event[1] = sizeof(event) - 2u; 7629 event[2] = hci_stack->state; 7630 hci_emit_event(event, sizeof(event), 1); 7631 } 7632 7633 #ifdef ENABLE_CLASSIC 7634 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7635 uint8_t event[13]; 7636 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7637 event[1] = sizeof(event) - 2; 7638 event[2] = status; 7639 little_endian_store_16(event, 3, con_handle); 7640 reverse_bd_addr(address, &event[5]); 7641 event[11] = 1; // ACL connection 7642 event[12] = 0; // encryption disabled 7643 hci_emit_event(event, sizeof(event), 1); 7644 } 7645 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7646 if (disable_l2cap_timeouts) return; 7647 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7648 uint8_t event[4]; 7649 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7650 event[1] = sizeof(event) - 2; 7651 little_endian_store_16(event, 2, conn->con_handle); 7652 hci_emit_event(event, sizeof(event), 1); 7653 } 7654 #endif 7655 7656 #ifdef ENABLE_BLE 7657 #ifdef ENABLE_LE_CENTRAL 7658 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){ 7659 uint8_t event[21]; 7660 event[0] = HCI_EVENT_LE_META; 7661 event[1] = sizeof(event) - 2u; 7662 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7663 event[3] = status; 7664 little_endian_store_16(event, 4, con_handle); 7665 event[6] = 0; // TODO: role 7666 event[7] = address_type; 7667 reverse_bd_addr(address, &event[8]); 7668 little_endian_store_16(event, 14, 0); // interval 7669 little_endian_store_16(event, 16, 0); // latency 7670 little_endian_store_16(event, 18, 0); // supervision timeout 7671 event[20] = 0; // master clock accuracy 7672 hci_emit_event(event, sizeof(event), 1); 7673 } 7674 #endif 7675 #endif 7676 7677 static void hci_emit_transport_packet_sent(void){ 7678 // notify upper stack that it might be possible to send again 7679 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7680 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7681 } 7682 7683 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7684 uint8_t event[6]; 7685 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7686 event[1] = sizeof(event) - 2u; 7687 event[2] = 0; // status = OK 7688 little_endian_store_16(event, 3, con_handle); 7689 event[5] = reason; 7690 hci_emit_event(event, sizeof(event), 1); 7691 } 7692 7693 static void hci_emit_nr_connections_changed(void){ 7694 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7695 uint8_t event[3]; 7696 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7697 event[1] = sizeof(event) - 2u; 7698 event[2] = nr_hci_connections(); 7699 hci_emit_event(event, sizeof(event), 1); 7700 } 7701 7702 static void hci_emit_hci_open_failed(void){ 7703 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7704 uint8_t event[2]; 7705 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7706 event[1] = sizeof(event) - 2u; 7707 hci_emit_event(event, sizeof(event), 1); 7708 } 7709 7710 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7711 log_info("hci_emit_dedicated_bonding_result %u ", status); 7712 uint8_t event[9]; 7713 int pos = 0; 7714 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7715 event[pos++] = sizeof(event) - 2u; 7716 event[pos++] = status; 7717 reverse_bd_addr(address, &event[pos]); 7718 hci_emit_event(event, sizeof(event), 1); 7719 } 7720 7721 7722 #ifdef ENABLE_CLASSIC 7723 7724 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7725 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7726 uint8_t event[5]; 7727 int pos = 0; 7728 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7729 event[pos++] = sizeof(event) - 2; 7730 little_endian_store_16(event, 2, con_handle); 7731 pos += 2; 7732 event[pos++] = level; 7733 hci_emit_event(event, sizeof(event), 1); 7734 } 7735 7736 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7737 if (!connection) return LEVEL_0; 7738 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7739 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7740 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7741 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7742 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7743 // LEVEL 4 always requires 128 bit encrytion key size 7744 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7745 security_level = LEVEL_3; 7746 } 7747 return security_level; 7748 } 7749 7750 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7751 uint8_t event[4]; 7752 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7753 event[1] = sizeof(event) - 2; 7754 event[2] = discoverable; 7755 event[3] = connectable; 7756 hci_emit_event(event, sizeof(event), 1); 7757 } 7758 7759 // query if remote side supports eSCO 7760 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7761 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7762 if (!connection) return false; 7763 return (connection->remote_supported_features[0] & 1) != 0; 7764 } 7765 7766 static bool hci_ssp_supported(hci_connection_t * connection){ 7767 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7768 return (connection->bonding_flags & mask) == mask; 7769 } 7770 7771 // query if remote side supports SSP 7772 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7773 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7774 if (!connection) return false; 7775 return hci_ssp_supported(connection) ? 1 : 0; 7776 } 7777 7778 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7779 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7780 } 7781 7782 /** 7783 * Check if remote supported features query has completed 7784 */ 7785 bool hci_remote_features_available(hci_con_handle_t handle){ 7786 hci_connection_t * connection = hci_connection_for_handle(handle); 7787 if (!connection) return false; 7788 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7789 } 7790 7791 /** 7792 * Trigger remote supported features query 7793 */ 7794 7795 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7796 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7797 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7798 } 7799 } 7800 7801 void hci_remote_features_query(hci_con_handle_t con_handle){ 7802 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7803 if (!connection) return; 7804 hci_trigger_remote_features_for_connection(connection); 7805 hci_run(); 7806 } 7807 7808 // GAP API 7809 /** 7810 * @bbrief enable/disable bonding. default is enabled 7811 * @praram enabled 7812 */ 7813 void gap_set_bondable_mode(int enable){ 7814 hci_stack->bondable = enable ? 1 : 0; 7815 } 7816 /** 7817 * @brief Get bondable mode. 7818 * @return 1 if bondable 7819 */ 7820 int gap_get_bondable_mode(void){ 7821 return hci_stack->bondable; 7822 } 7823 7824 /** 7825 * @brief map link keys to security levels 7826 */ 7827 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7828 switch (link_key_type){ 7829 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7830 return LEVEL_4; 7831 case COMBINATION_KEY: 7832 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7833 return LEVEL_3; 7834 default: 7835 return LEVEL_2; 7836 } 7837 } 7838 7839 /** 7840 * @brief map link keys to secure connection yes/no 7841 */ 7842 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7843 switch (link_key_type){ 7844 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7845 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7846 return true; 7847 default: 7848 return false; 7849 } 7850 } 7851 7852 /** 7853 * @brief map link keys to authenticated 7854 */ 7855 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7856 switch (link_key_type){ 7857 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7858 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7859 return true; 7860 default: 7861 return false; 7862 } 7863 } 7864 7865 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7866 log_info("gap_mitm_protection_required_for_security_level %u", level); 7867 return level > LEVEL_2; 7868 } 7869 7870 /** 7871 * @brief get current security level 7872 */ 7873 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7874 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7875 if (!connection) return LEVEL_0; 7876 return gap_security_level_for_connection(connection); 7877 } 7878 7879 /** 7880 * @brief request connection to device to 7881 * @result GAP_AUTHENTICATION_RESULT 7882 */ 7883 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7884 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7885 if (!connection){ 7886 hci_emit_security_level(con_handle, LEVEL_0); 7887 return; 7888 } 7889 7890 btstack_assert(hci_is_le_connection(connection) == false); 7891 7892 // 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) 7893 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7894 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7895 requested_level = LEVEL_4; 7896 } 7897 7898 gap_security_level_t current_level = gap_security_level(con_handle); 7899 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7900 requested_level, connection->requested_security_level, current_level); 7901 7902 // authentication active if authentication request was sent or planned level > 0 7903 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7904 if (authentication_active){ 7905 // authentication already active 7906 if (connection->requested_security_level < requested_level){ 7907 // increase requested level as new level is higher 7908 // TODO: handle re-authentication when done 7909 connection->requested_security_level = requested_level; 7910 } 7911 } else { 7912 // no request active, notify if security sufficient 7913 if (requested_level <= current_level){ 7914 hci_emit_security_level(con_handle, current_level); 7915 return; 7916 } 7917 7918 // store request 7919 connection->requested_security_level = requested_level; 7920 7921 // start to authenticate connection 7922 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7923 7924 // request remote features if not already active, also trigger hci_run 7925 hci_remote_features_query(con_handle); 7926 } 7927 } 7928 7929 /** 7930 * @brief start dedicated bonding with device. disconnect after bonding 7931 * @param device 7932 * @param request MITM protection 7933 * @result GAP_DEDICATED_BONDING_COMPLETE 7934 */ 7935 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7936 7937 // create connection state machine 7938 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7939 7940 if (!connection){ 7941 return BTSTACK_MEMORY_ALLOC_FAILED; 7942 } 7943 7944 // delete linkn key 7945 gap_drop_link_key_for_bd_addr(device); 7946 7947 // configure LEVEL_2/3, dedicated bonding 7948 connection->state = SEND_CREATE_CONNECTION; 7949 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7950 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7951 connection->bonding_flags = BONDING_DEDICATED; 7952 7953 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7954 7955 // handle: connnection failure (connection complete != ok) 7956 // handle: authentication failure 7957 // handle: disconnect on done 7958 7959 hci_run(); 7960 7961 return 0; 7962 } 7963 7964 void gap_set_local_name(const char * local_name){ 7965 hci_stack->local_name = local_name; 7966 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7967 // also update EIR if not set by user 7968 if (hci_stack->eir_data == NULL){ 7969 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7970 } 7971 hci_run(); 7972 } 7973 #endif 7974 7975 7976 #ifdef ENABLE_BLE 7977 7978 #ifdef ENABLE_LE_CENTRAL 7979 void gap_start_scan(void){ 7980 hci_stack->le_scanning_enabled = true; 7981 hci_run(); 7982 } 7983 7984 void gap_stop_scan(void){ 7985 hci_stack->le_scanning_enabled = false; 7986 hci_run(); 7987 } 7988 7989 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7990 hci_stack->le_scan_type = scan_type; 7991 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7992 hci_stack->le_scan_interval = scan_interval; 7993 hci_stack->le_scan_window = scan_window; 7994 hci_stack->le_scanning_param_update = true; 7995 hci_run(); 7996 } 7997 7998 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7999 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8000 } 8001 8002 void gap_set_scan_duplicate_filter(bool enabled){ 8003 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8004 } 8005 8006 void gap_set_scan_phys(uint8_t phys){ 8007 // LE Coded and LE 1M PHY 8008 hci_stack->le_scan_phys = phys & 0x05; 8009 } 8010 8011 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 8012 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8013 if (!conn){ 8014 // disallow if le connection is already outgoing 8015 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8016 log_error("le connection already active"); 8017 return ERROR_CODE_COMMAND_DISALLOWED; 8018 } 8019 8020 log_info("gap_connect: no connection exists yet, creating context"); 8021 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 8022 if (!conn){ 8023 // notify client that alloc failed 8024 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 8025 log_info("gap_connect: failed to alloc hci_connection_t"); 8026 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 8027 } 8028 8029 // set le connecting state 8030 if (hci_is_le_connection_type(addr_type)){ 8031 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8032 } 8033 8034 conn->state = SEND_CREATE_CONNECTION; 8035 log_info("gap_connect: send create connection next"); 8036 hci_run(); 8037 return ERROR_CODE_SUCCESS; 8038 } 8039 8040 if (!hci_is_le_connection(conn) || 8041 (conn->state == SEND_CREATE_CONNECTION) || 8042 (conn->state == SENT_CREATE_CONNECTION)) { 8043 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 8044 log_error("gap_connect: classic connection or connect is already being created"); 8045 return GATT_CLIENT_IN_WRONG_STATE; 8046 } 8047 8048 // check if connection was just disconnected 8049 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8050 log_info("gap_connect: send create connection (again)"); 8051 conn->state = SEND_CREATE_CONNECTION; 8052 hci_run(); 8053 return ERROR_CODE_SUCCESS; 8054 } 8055 8056 log_info("gap_connect: context exists with state %u", conn->state); 8057 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 8058 hci_run(); 8059 return ERROR_CODE_SUCCESS; 8060 } 8061 8062 // @assumption: only a single outgoing LE Connection exists 8063 static hci_connection_t * gap_get_outgoing_connection(void){ 8064 btstack_linked_item_t *it; 8065 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8066 hci_connection_t * conn = (hci_connection_t *) it; 8067 if (!hci_is_le_connection(conn)) continue; 8068 switch (conn->state){ 8069 case SEND_CREATE_CONNECTION: 8070 case SENT_CREATE_CONNECTION: 8071 return conn; 8072 default: 8073 break; 8074 }; 8075 } 8076 return NULL; 8077 } 8078 8079 uint8_t gap_connect_cancel(void){ 8080 hci_connection_t * conn; 8081 switch (hci_stack->le_connecting_request){ 8082 case LE_CONNECTING_IDLE: 8083 break; 8084 case LE_CONNECTING_WHITELIST: 8085 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8086 hci_run(); 8087 break; 8088 case LE_CONNECTING_DIRECT: 8089 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8090 conn = gap_get_outgoing_connection(); 8091 if (conn == NULL){ 8092 hci_run(); 8093 } else { 8094 switch (conn->state){ 8095 case SEND_CREATE_CONNECTION: 8096 // skip sending create connection and emit event instead 8097 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8098 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8099 btstack_memory_hci_connection_free( conn ); 8100 break; 8101 case SENT_CREATE_CONNECTION: 8102 // let hci_run_general_gap_le cancel outgoing connection 8103 hci_run(); 8104 break; 8105 default: 8106 break; 8107 } 8108 } 8109 break; 8110 default: 8111 btstack_unreachable(); 8112 break; 8113 } 8114 return ERROR_CODE_SUCCESS; 8115 } 8116 8117 /** 8118 * @brief Set connection parameters for outgoing connections 8119 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8120 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8121 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8122 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8123 * @param conn_latency, default: 4 8124 * @param supervision_timeout (unit: 10ms), default: 720 ms 8125 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8126 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8127 */ 8128 8129 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8130 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8131 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8132 hci_stack->le_connection_scan_interval = conn_scan_interval; 8133 hci_stack->le_connection_scan_window = conn_scan_window; 8134 hci_stack->le_connection_interval_min = conn_interval_min; 8135 hci_stack->le_connection_interval_max = conn_interval_max; 8136 hci_stack->le_connection_latency = conn_latency; 8137 hci_stack->le_supervision_timeout = supervision_timeout; 8138 hci_stack->le_minimum_ce_length = min_ce_length; 8139 hci_stack->le_maximum_ce_length = max_ce_length; 8140 } 8141 8142 void gap_set_connection_phys(uint8_t phys){ 8143 // LE Coded, LE 1M, LE 2M PHY 8144 hci_stack->le_connection_phys = phys & 7; 8145 } 8146 8147 #endif 8148 8149 /** 8150 * @brief Updates the connection parameters for a given LE connection 8151 * @param handle 8152 * @param conn_interval_min (unit: 1.25ms) 8153 * @param conn_interval_max (unit: 1.25ms) 8154 * @param conn_latency 8155 * @param supervision_timeout (unit: 10ms) 8156 * @return 0 if ok 8157 */ 8158 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8159 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8160 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8161 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8162 connection->le_conn_interval_min = conn_interval_min; 8163 connection->le_conn_interval_max = conn_interval_max; 8164 connection->le_conn_latency = conn_latency; 8165 connection->le_supervision_timeout = supervision_timeout; 8166 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8167 hci_run(); 8168 return 0; 8169 } 8170 8171 /** 8172 * @brief Request an update of the connection parameter for a given LE connection 8173 * @param handle 8174 * @param conn_interval_min (unit: 1.25ms) 8175 * @param conn_interval_max (unit: 1.25ms) 8176 * @param conn_latency 8177 * @param supervision_timeout (unit: 10ms) 8178 * @return 0 if ok 8179 */ 8180 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8181 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8182 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8183 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8184 connection->le_conn_interval_min = conn_interval_min; 8185 connection->le_conn_interval_max = conn_interval_max; 8186 connection->le_conn_latency = conn_latency; 8187 connection->le_supervision_timeout = supervision_timeout; 8188 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8189 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8190 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8191 return 0; 8192 } 8193 8194 #ifdef ENABLE_LE_PERIPHERAL 8195 8196 /** 8197 * @brief Set Advertisement Data 8198 * @param advertising_data_length 8199 * @param advertising_data (max 31 octets) 8200 * @note data is not copied, pointer has to stay valid 8201 */ 8202 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8203 hci_stack->le_advertisements_data_len = advertising_data_length; 8204 hci_stack->le_advertisements_data = advertising_data; 8205 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8206 hci_run(); 8207 } 8208 8209 /** 8210 * @brief Set Scan Response Data 8211 * @param advertising_data_length 8212 * @param advertising_data (max 31 octets) 8213 * @note data is not copied, pointer has to stay valid 8214 */ 8215 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8216 hci_stack->le_scan_response_data_len = scan_response_data_length; 8217 hci_stack->le_scan_response_data = scan_response_data; 8218 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8219 hci_run(); 8220 } 8221 8222 /** 8223 * @brief Set Advertisement Parameters 8224 * @param adv_int_min 8225 * @param adv_int_max 8226 * @param adv_type 8227 * @param direct_address_type 8228 * @param direct_address 8229 * @param channel_map 8230 * @param filter_policy 8231 * 8232 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8233 */ 8234 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8235 uint8_t direct_address_typ, bd_addr_t direct_address, 8236 uint8_t channel_map, uint8_t filter_policy) { 8237 8238 hci_stack->le_advertisements_interval_min = adv_int_min; 8239 hci_stack->le_advertisements_interval_max = adv_int_max; 8240 hci_stack->le_advertisements_type = adv_type; 8241 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8242 hci_stack->le_advertisements_channel_map = channel_map; 8243 hci_stack->le_advertisements_filter_policy = filter_policy; 8244 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8245 6); 8246 8247 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8248 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8249 hci_run(); 8250 } 8251 8252 /** 8253 * @brief Enable/Disable Advertisements 8254 * @param enabled 8255 */ 8256 void gap_advertisements_enable(int enabled){ 8257 if (enabled == 0){ 8258 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8259 } else { 8260 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8261 } 8262 hci_update_advertisements_enabled_for_current_roles(); 8263 hci_run(); 8264 } 8265 8266 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8267 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8268 btstack_linked_list_iterator_t it; 8269 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8270 while (btstack_linked_list_iterator_has_next(&it)){ 8271 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8272 if ( item->advertising_handle == advertising_handle ) { 8273 return item; 8274 } 8275 } 8276 return NULL; 8277 } 8278 8279 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8280 // find free advertisement handle 8281 uint8_t advertisement_handle; 8282 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8283 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8284 } 8285 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8286 // clear 8287 memset(storage, 0, sizeof(le_advertising_set_t)); 8288 // copy params 8289 storage->advertising_handle = advertisement_handle; 8290 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8291 // add to list 8292 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8293 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8294 *out_advertising_handle = advertisement_handle; 8295 // set tasks and start 8296 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8297 hci_run(); 8298 return ERROR_CODE_SUCCESS; 8299 } 8300 8301 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 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->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8305 // set tasks and start 8306 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8307 hci_run(); 8308 return ERROR_CODE_SUCCESS; 8309 } 8310 8311 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 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 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8315 return ERROR_CODE_SUCCESS; 8316 } 8317 8318 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8319 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8320 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8321 memcpy(advertising_set->random_address, random_address, 6); 8322 // set tasks and start 8323 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8324 hci_run(); 8325 return ERROR_CODE_SUCCESS; 8326 } 8327 8328 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8329 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8330 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8331 advertising_set->adv_data = advertising_data; 8332 advertising_set->adv_data_len = advertising_data_length; 8333 // set tasks and start 8334 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8335 hci_run(); 8336 return ERROR_CODE_SUCCESS; 8337 } 8338 8339 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){ 8340 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8341 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8342 advertising_set->scan_data = scan_response_data; 8343 advertising_set->scan_data_len = scan_response_data_length; 8344 // set tasks and start 8345 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8346 hci_run(); 8347 return ERROR_CODE_SUCCESS; 8348 } 8349 8350 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8351 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8352 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8353 advertising_set->enable_timeout = timeout; 8354 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8355 // set tasks and start 8356 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8357 hci_run(); 8358 return ERROR_CODE_SUCCESS; 8359 } 8360 8361 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8362 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8363 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8364 // set tasks and start 8365 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8366 hci_run(); 8367 return ERROR_CODE_SUCCESS; 8368 } 8369 8370 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8371 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8372 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8373 // set tasks and start 8374 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8375 hci_run(); 8376 return ERROR_CODE_SUCCESS; 8377 } 8378 8379 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8380 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8381 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8382 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8383 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8384 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8385 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8386 // set tasks and start 8387 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8388 hci_run(); 8389 return ERROR_CODE_SUCCESS; 8390 } 8391 8392 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8393 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8394 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8395 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8396 return ERROR_CODE_SUCCESS; 8397 } 8398 8399 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8400 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8401 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8402 advertising_set->periodic_data = periodic_data; 8403 advertising_set->periodic_data_len = periodic_data_length; 8404 // set tasks and start 8405 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8406 hci_run(); 8407 return ERROR_CODE_SUCCESS; 8408 } 8409 8410 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8411 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8412 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8413 // set tasks and start 8414 advertising_set->periodic_include_adi = include_adi; 8415 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8416 hci_run(); 8417 return ERROR_CODE_SUCCESS; 8418 } 8419 8420 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8421 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8422 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8423 // set tasks and start 8424 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8425 hci_run(); 8426 return ERROR_CODE_SUCCESS; 8427 } 8428 8429 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8430 hci_stack->le_past_mode = mode; 8431 hci_stack->le_past_skip = skip; 8432 hci_stack->le_past_sync_timeout = sync_timeout; 8433 hci_stack->le_past_cte_type = cte_type; 8434 hci_stack->le_past_set_default_params = true; 8435 hci_run(); 8436 return ERROR_CODE_SUCCESS; 8437 } 8438 8439 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8440 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8441 if (hci_connection == NULL){ 8442 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8443 } 8444 hci_connection->le_past_sync_handle = sync_handle; 8445 hci_connection->le_past_service_data = service_data; 8446 hci_run(); 8447 return ERROR_CODE_SUCCESS; 8448 } 8449 8450 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8451 8452 #endif 8453 8454 #endif 8455 8456 void hci_le_set_own_address_type(uint8_t own_address_type){ 8457 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8458 if (own_address_type == hci_stack->le_own_addr_type) return; 8459 hci_stack->le_own_addr_type = own_address_type; 8460 8461 #ifdef ENABLE_LE_PERIPHERAL 8462 // update advertisement parameters, too 8463 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8464 hci_run(); 8465 #endif 8466 #ifdef ENABLE_LE_CENTRAL 8467 // note: we don't update scan parameters or modify ongoing connection attempts 8468 #endif 8469 } 8470 8471 void hci_le_random_address_set(const bd_addr_t random_address){ 8472 memcpy(hci_stack->le_random_address, random_address, 6); 8473 hci_stack->le_random_address_set = true; 8474 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8475 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8476 if (hci_extended_advertising_supported()){ 8477 // force advertising set creation for LE Set Advertising Set Random Address 8478 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8479 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8480 } 8481 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8482 } 8483 #endif 8484 hci_run(); 8485 } 8486 8487 #endif 8488 8489 uint8_t gap_disconnect(hci_con_handle_t handle){ 8490 hci_connection_t * conn = hci_connection_for_handle(handle); 8491 if (!conn){ 8492 hci_emit_disconnection_complete(handle, 0); 8493 return 0; 8494 } 8495 // ignore if already disconnected 8496 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8497 return 0; 8498 } 8499 conn->state = SEND_DISCONNECT; 8500 hci_run(); 8501 return 0; 8502 } 8503 8504 int gap_read_rssi(hci_con_handle_t con_handle){ 8505 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8506 if (hci_connection == NULL) return 0; 8507 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8508 hci_run(); 8509 return 1; 8510 } 8511 8512 /** 8513 * @brief Get connection type 8514 * @param con_handle 8515 * @result connection_type 8516 */ 8517 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8518 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8519 if (!conn) return GAP_CONNECTION_INVALID; 8520 switch (conn->address_type){ 8521 case BD_ADDR_TYPE_LE_PUBLIC: 8522 case BD_ADDR_TYPE_LE_RANDOM: 8523 return GAP_CONNECTION_LE; 8524 case BD_ADDR_TYPE_SCO: 8525 return GAP_CONNECTION_SCO; 8526 case BD_ADDR_TYPE_ACL: 8527 return GAP_CONNECTION_ACL; 8528 default: 8529 return GAP_CONNECTION_INVALID; 8530 } 8531 } 8532 8533 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8534 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8535 if (!conn) return HCI_ROLE_INVALID; 8536 return (hci_role_t) conn->role; 8537 } 8538 8539 8540 #ifdef ENABLE_CLASSIC 8541 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8542 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8543 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8544 conn->request_role = role; 8545 hci_run(); 8546 return ERROR_CODE_SUCCESS; 8547 } 8548 #endif 8549 8550 #ifdef ENABLE_BLE 8551 8552 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){ 8553 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8554 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8555 8556 conn->le_phy_update_all_phys = all_phys; 8557 conn->le_phy_update_tx_phys = tx_phys; 8558 conn->le_phy_update_rx_phys = rx_phys; 8559 conn->le_phy_update_phy_options = phy_options; 8560 8561 hci_run(); 8562 8563 return 0; 8564 } 8565 8566 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8567 // check if already in list 8568 btstack_linked_list_iterator_t it; 8569 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8570 while (btstack_linked_list_iterator_has_next(&it)) { 8571 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8572 if (entry->address_type != address_type) { 8573 continue; 8574 } 8575 if (memcmp(entry->address, address, 6) != 0) { 8576 continue; 8577 } 8578 // disallow if already scheduled to add 8579 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 8580 return ERROR_CODE_COMMAND_DISALLOWED; 8581 } 8582 // still on controller, but scheduled to remove -> re-add 8583 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 8584 return ERROR_CODE_SUCCESS; 8585 } 8586 // alloc and add to list 8587 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8588 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8589 entry->address_type = address_type; 8590 (void)memcpy(entry->address, address, 6); 8591 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8592 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8593 return ERROR_CODE_SUCCESS; 8594 } 8595 8596 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8597 btstack_linked_list_iterator_t it; 8598 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8599 while (btstack_linked_list_iterator_has_next(&it)){ 8600 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8601 if (entry->address_type != address_type) { 8602 continue; 8603 } 8604 if (memcmp(entry->address, address, 6) != 0) { 8605 continue; 8606 } 8607 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8608 // remove from controller if already present 8609 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8610 } else { 8611 // directly remove entry from whitelist 8612 btstack_linked_list_iterator_remove(&it); 8613 btstack_memory_whitelist_entry_free(entry); 8614 } 8615 return ERROR_CODE_SUCCESS; 8616 } 8617 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8618 } 8619 8620 static void hci_whitelist_clear(void){ 8621 btstack_linked_list_iterator_t it; 8622 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8623 while (btstack_linked_list_iterator_has_next(&it)){ 8624 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8625 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8626 // remove from controller if already present 8627 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8628 continue; 8629 } 8630 // directly remove entry from whitelist 8631 btstack_linked_list_iterator_remove(&it); 8632 btstack_memory_whitelist_entry_free(entry); 8633 } 8634 } 8635 8636 /** 8637 * @brief Clear Whitelist 8638 * @return 0 if ok 8639 */ 8640 uint8_t gap_whitelist_clear(void){ 8641 hci_whitelist_clear(); 8642 hci_run(); 8643 return ERROR_CODE_SUCCESS; 8644 } 8645 8646 /** 8647 * @brief Add Device to Whitelist 8648 * @param address_typ 8649 * @param address 8650 * @return 0 if ok 8651 */ 8652 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8653 uint8_t status = hci_whitelist_add(address_type, address); 8654 if (status){ 8655 return status; 8656 } 8657 hci_run(); 8658 return ERROR_CODE_SUCCESS; 8659 } 8660 8661 /** 8662 * @brief Remove Device from Whitelist 8663 * @param address_typ 8664 * @param address 8665 * @return 0 if ok 8666 */ 8667 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8668 uint8_t status = hci_whitelist_remove(address_type, address); 8669 if (status){ 8670 return status; 8671 } 8672 hci_run(); 8673 return ERROR_CODE_SUCCESS; 8674 } 8675 8676 #ifdef ENABLE_LE_CENTRAL 8677 /** 8678 * @brief Connect with Whitelist 8679 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8680 * @return - if ok 8681 */ 8682 uint8_t gap_connect_with_whitelist(void){ 8683 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8684 return ERROR_CODE_COMMAND_DISALLOWED; 8685 } 8686 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8687 hci_run(); 8688 return ERROR_CODE_SUCCESS; 8689 } 8690 8691 /** 8692 * @brief Auto Connection Establishment - Start Connecting to device 8693 * @param address_typ 8694 * @param address 8695 * @return 0 if ok 8696 */ 8697 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8698 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8699 return ERROR_CODE_COMMAND_DISALLOWED; 8700 } 8701 8702 uint8_t status = hci_whitelist_add(address_type, address); 8703 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8704 return status; 8705 } 8706 8707 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8708 8709 hci_run(); 8710 return ERROR_CODE_SUCCESS; 8711 } 8712 8713 /** 8714 * @brief Auto Connection Establishment - Stop Connecting to device 8715 * @param address_typ 8716 * @param address 8717 * @return 0 if ok 8718 */ 8719 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8720 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8721 return ERROR_CODE_COMMAND_DISALLOWED; 8722 } 8723 8724 hci_whitelist_remove(address_type, address); 8725 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8726 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8727 } 8728 hci_run(); 8729 return 0; 8730 } 8731 8732 /** 8733 * @brief Auto Connection Establishment - Stop everything 8734 * @note Convenience function to stop all active auto connection attempts 8735 */ 8736 uint8_t gap_auto_connection_stop_all(void){ 8737 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8738 return ERROR_CODE_COMMAND_DISALLOWED; 8739 } 8740 hci_whitelist_clear(); 8741 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8742 hci_run(); 8743 return ERROR_CODE_SUCCESS; 8744 } 8745 8746 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8747 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8748 if (!conn) return 0; 8749 return conn->le_connection_interval; 8750 } 8751 #endif 8752 #endif 8753 8754 #ifdef ENABLE_CLASSIC 8755 /** 8756 * @brief Set Extended Inquiry Response data 8757 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8758 * @note has to be done before stack starts up 8759 */ 8760 void gap_set_extended_inquiry_response(const uint8_t * data){ 8761 hci_stack->eir_data = data; 8762 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8763 hci_run(); 8764 } 8765 8766 /** 8767 * @brief Start GAP Classic Inquiry 8768 * @param duration in 1.28s units 8769 * @return 0 if ok 8770 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8771 */ 8772 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8773 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8774 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8775 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8776 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8777 } 8778 hci_stack->inquiry_state = duration_in_1280ms_units; 8779 hci_stack->inquiry_max_period_length = 0; 8780 hci_stack->inquiry_min_period_length = 0; 8781 hci_run(); 8782 return 0; 8783 } 8784 8785 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8786 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8787 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8788 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8789 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8790 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8791 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8792 8793 hci_stack->inquiry_state = duration; 8794 hci_stack->inquiry_max_period_length = max_period_length; 8795 hci_stack->inquiry_min_period_length = min_period_length; 8796 hci_run(); 8797 return 0; 8798 } 8799 8800 /** 8801 * @brief Stop GAP Classic Inquiry 8802 * @return 0 if ok 8803 */ 8804 int gap_inquiry_stop(void){ 8805 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8806 // emit inquiry complete event, before it even started 8807 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8808 hci_emit_event(event, sizeof(event), 1); 8809 return 0; 8810 } 8811 switch (hci_stack->inquiry_state){ 8812 case GAP_INQUIRY_STATE_ACTIVE: 8813 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8814 hci_run(); 8815 return ERROR_CODE_SUCCESS; 8816 case GAP_INQUIRY_STATE_PERIODIC: 8817 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8818 hci_run(); 8819 return ERROR_CODE_SUCCESS; 8820 default: 8821 return ERROR_CODE_COMMAND_DISALLOWED; 8822 } 8823 } 8824 8825 void gap_inquiry_set_lap(uint32_t lap){ 8826 hci_stack->inquiry_lap = lap; 8827 } 8828 8829 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8830 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8831 hci_stack->inquiry_scan_window = inquiry_scan_window; 8832 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8833 hci_run(); 8834 } 8835 8836 8837 /** 8838 * @brief Remote Name Request 8839 * @param addr 8840 * @param page_scan_repetition_mode 8841 * @param clock_offset only used when bit 15 is set 8842 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8843 */ 8844 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8845 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8846 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8847 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8848 hci_stack->remote_name_clock_offset = clock_offset; 8849 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8850 hci_run(); 8851 return 0; 8852 } 8853 8854 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8855 hci_stack->gap_pairing_state = state; 8856 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8857 hci_run(); 8858 return 0; 8859 } 8860 8861 /** 8862 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8863 * @param addr 8864 * @param pin_data 8865 * @param pin_len 8866 * @return 0 if ok 8867 */ 8868 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8869 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8870 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8871 hci_stack->gap_pairing_pin_len = pin_len; 8872 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8873 } 8874 8875 /** 8876 * @brief Legacy Pairing Pin Code Response 8877 * @param addr 8878 * @param pin 8879 * @return 0 if ok 8880 */ 8881 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8882 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8883 } 8884 8885 /** 8886 * @brief Abort Legacy Pairing 8887 * @param addr 8888 * @param pin 8889 * @return 0 if ok 8890 */ 8891 int gap_pin_code_negative(bd_addr_t addr){ 8892 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8893 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8894 } 8895 8896 /** 8897 * @brief SSP Passkey Response 8898 * @param addr 8899 * @param passkey 8900 * @return 0 if ok 8901 */ 8902 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8903 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8904 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8905 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8906 } 8907 8908 /** 8909 * @brief Abort SSP Passkey Entry/Pairing 8910 * @param addr 8911 * @param pin 8912 * @return 0 if ok 8913 */ 8914 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8915 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8916 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8917 } 8918 8919 /** 8920 * @brief Accept SSP Numeric Comparison 8921 * @param addr 8922 * @param passkey 8923 * @return 0 if ok 8924 */ 8925 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8926 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8927 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8928 } 8929 8930 /** 8931 * @brief Abort SSP Numeric Comparison/Pairing 8932 * @param addr 8933 * @param pin 8934 * @return 0 if ok 8935 */ 8936 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8937 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8938 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8939 } 8940 8941 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8942 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8943 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8944 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8945 connectionSetAuthenticationFlags(conn, flag); 8946 hci_run(); 8947 return ERROR_CODE_SUCCESS; 8948 } 8949 #endif 8950 8951 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8952 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8953 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8954 } 8955 8956 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8957 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8958 } 8959 #endif 8960 8961 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8962 /** 8963 * @brief Report Remote OOB Data 8964 * @param bd_addr 8965 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8966 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8967 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8968 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8969 */ 8970 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){ 8971 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8972 if (connection == NULL) { 8973 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8974 } 8975 connection->classic_oob_c_192 = c_192; 8976 connection->classic_oob_r_192 = r_192; 8977 8978 // ignore P-256 if not supported by us 8979 if (hci_stack->secure_connections_active){ 8980 connection->classic_oob_c_256 = c_256; 8981 connection->classic_oob_r_256 = r_256; 8982 } 8983 8984 return ERROR_CODE_SUCCESS; 8985 } 8986 /** 8987 * @brief Generate new OOB data 8988 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 8989 */ 8990 void gap_ssp_generate_oob_data(void){ 8991 hci_stack->classic_read_local_oob_data = true; 8992 hci_run(); 8993 } 8994 8995 #endif 8996 8997 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 8998 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 8999 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9000 if (connection == NULL) { 9001 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9002 } 9003 9004 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9005 connection->link_key_type = type; 9006 9007 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9008 } 9009 9010 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9011 /** 9012 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9013 * @param inquiry_mode see bluetooth_defines.h 9014 */ 9015 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9016 hci_stack->inquiry_mode = inquiry_mode; 9017 } 9018 9019 /** 9020 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9021 */ 9022 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9023 hci_stack->sco_voice_setting = voice_setting; 9024 } 9025 9026 /** 9027 * @brief Get SCO Voice Setting 9028 * @return current voice setting 9029 */ 9030 uint16_t hci_get_sco_voice_setting(void){ 9031 return hci_stack->sco_voice_setting; 9032 } 9033 9034 static int hci_have_usb_transport(void){ 9035 if (!hci_stack->hci_transport) return 0; 9036 const char * transport_name = hci_stack->hci_transport->name; 9037 if (!transport_name) return 0; 9038 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9039 } 9040 9041 /** @brief Get SCO packet length for current SCO Voice setting 9042 * @note Using SCO packets of the exact length is required for USB transfer 9043 * @return Length of SCO packets in bytes (not audio frames) 9044 */ 9045 uint16_t hci_get_sco_packet_length(void){ 9046 uint16_t sco_packet_length = 0; 9047 9048 #ifdef ENABLE_SCO_OVER_HCI 9049 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9050 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 9051 9052 if (hci_have_usb_transport()){ 9053 // see Core Spec for H2 USB Transfer. 9054 // 3 byte SCO header + 24 bytes per connection 9055 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 9056 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 9057 } else { 9058 // 3 byte SCO header + SCO packet size over the air (60 bytes) 9059 sco_packet_length = 3 + 60 * multiplier; 9060 // assert that it still fits inside an SCO buffer 9061 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9062 sco_packet_length = 3 + 60; 9063 } 9064 } 9065 #endif 9066 9067 #ifdef HAVE_SCO_TRANSPORT 9068 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9069 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 9070 sco_packet_length = 3 + 60 * multiplier; 9071 #endif 9072 return sco_packet_length; 9073 } 9074 9075 /** 9076 * @brief Sets the master/slave policy 9077 * @param policy (0: attempt to become master, 1: let connecting device decide) 9078 */ 9079 void hci_set_master_slave_policy(uint8_t policy){ 9080 hci_stack->master_slave_policy = policy; 9081 } 9082 9083 #endif 9084 9085 HCI_STATE hci_get_state(void){ 9086 return hci_stack->state; 9087 } 9088 9089 #ifdef ENABLE_CLASSIC 9090 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9091 hci_stack->gap_classic_accept_callback = accept_callback; 9092 } 9093 #endif 9094 9095 /** 9096 * @brief Set callback for Bluetooth Hardware Error 9097 */ 9098 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9099 hci_stack->hardware_error_callback = fn; 9100 } 9101 9102 void hci_disconnect_all(void){ 9103 btstack_linked_list_iterator_t it; 9104 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9105 while (btstack_linked_list_iterator_has_next(&it)){ 9106 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9107 if (con->state == SENT_DISCONNECT) continue; 9108 con->state = SEND_DISCONNECT; 9109 } 9110 hci_run(); 9111 } 9112 9113 uint16_t hci_get_manufacturer(void){ 9114 return hci_stack->manufacturer; 9115 } 9116 9117 #ifdef ENABLE_BLE 9118 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9119 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9120 if (!hci_con) return NULL; 9121 return &hci_con->sm_connection; 9122 } 9123 9124 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9125 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9126 #endif 9127 9128 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9129 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9130 if (hci_connection == NULL) return 0; 9131 if (hci_is_le_connection(hci_connection)){ 9132 #ifdef ENABLE_BLE 9133 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9134 if (sm_conn->sm_connection_encrypted) { 9135 return sm_conn->sm_actual_encryption_key_size; 9136 } 9137 #endif 9138 } else { 9139 #ifdef ENABLE_CLASSIC 9140 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9141 return hci_connection->encryption_key_size; 9142 } 9143 #endif 9144 } 9145 return 0; 9146 } 9147 9148 bool gap_authenticated(hci_con_handle_t con_handle){ 9149 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9150 if (hci_connection == NULL) return false; 9151 9152 switch (hci_connection->address_type){ 9153 #ifdef ENABLE_BLE 9154 case BD_ADDR_TYPE_LE_PUBLIC: 9155 case BD_ADDR_TYPE_LE_RANDOM: 9156 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9157 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9158 #endif 9159 #ifdef ENABLE_CLASSIC 9160 case BD_ADDR_TYPE_SCO: 9161 case BD_ADDR_TYPE_ACL: 9162 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9163 #endif 9164 default: 9165 return false; 9166 } 9167 } 9168 9169 bool gap_secure_connection(hci_con_handle_t con_handle){ 9170 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9171 if (hci_connection == NULL) return 0; 9172 9173 switch (hci_connection->address_type){ 9174 #ifdef ENABLE_BLE 9175 case BD_ADDR_TYPE_LE_PUBLIC: 9176 case BD_ADDR_TYPE_LE_RANDOM: 9177 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9178 return hci_connection->sm_connection.sm_connection_sc != 0; 9179 #endif 9180 #ifdef ENABLE_CLASSIC 9181 case BD_ADDR_TYPE_SCO: 9182 case BD_ADDR_TYPE_ACL: 9183 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9184 #endif 9185 default: 9186 return false; 9187 } 9188 } 9189 9190 bool gap_bonded(hci_con_handle_t con_handle){ 9191 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9192 if (hci_connection == NULL) return 0; 9193 9194 #ifdef ENABLE_CLASSIC 9195 link_key_t link_key; 9196 link_key_type_t link_key_type; 9197 #endif 9198 switch (hci_connection->address_type){ 9199 #ifdef ENABLE_BLE 9200 case BD_ADDR_TYPE_LE_PUBLIC: 9201 case BD_ADDR_TYPE_LE_RANDOM: 9202 return hci_connection->sm_connection.sm_le_db_index >= 0; 9203 #endif 9204 #ifdef ENABLE_CLASSIC 9205 case BD_ADDR_TYPE_SCO: 9206 case BD_ADDR_TYPE_ACL: 9207 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9208 #endif 9209 default: 9210 return false; 9211 } 9212 } 9213 9214 #ifdef ENABLE_BLE 9215 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9216 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9217 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9218 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9219 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9220 return sm_conn->sm_connection_authorization_state; 9221 } 9222 #endif 9223 9224 #ifdef ENABLE_CLASSIC 9225 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){ 9226 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9227 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9228 conn->sniff_min_interval = sniff_min_interval; 9229 conn->sniff_max_interval = sniff_max_interval; 9230 conn->sniff_attempt = sniff_attempt; 9231 conn->sniff_timeout = sniff_timeout; 9232 hci_run(); 9233 return 0; 9234 } 9235 9236 /** 9237 * @brief Exit Sniff mode 9238 * @param con_handle 9239 @ @return 0 if ok 9240 */ 9241 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9242 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9243 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9244 conn->sniff_min_interval = 0xffff; 9245 hci_run(); 9246 return 0; 9247 } 9248 9249 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){ 9250 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9251 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9252 conn->sniff_subrating_max_latency = max_latency; 9253 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9254 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9255 hci_run(); 9256 return ERROR_CODE_SUCCESS; 9257 } 9258 9259 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){ 9260 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9261 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9262 conn->qos_service_type = service_type; 9263 conn->qos_token_rate = token_rate; 9264 conn->qos_peak_bandwidth = peak_bandwidth; 9265 conn->qos_latency = latency; 9266 conn->qos_delay_variation = delay_variation; 9267 hci_run(); 9268 return ERROR_CODE_SUCCESS; 9269 } 9270 9271 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9272 hci_stack->new_page_scan_interval = page_scan_interval; 9273 hci_stack->new_page_scan_window = page_scan_window; 9274 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9275 hci_run(); 9276 } 9277 9278 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9279 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9280 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9281 hci_run(); 9282 } 9283 9284 void gap_set_page_timeout(uint16_t page_timeout){ 9285 hci_stack->page_timeout = page_timeout; 9286 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9287 hci_run(); 9288 } 9289 9290 #endif 9291 9292 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9293 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9294 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9295 if (le_device_db_index >= le_device_db_max_count()) return; 9296 uint8_t offset = le_device_db_index >> 3; 9297 uint8_t mask = 1 << (le_device_db_index & 7); 9298 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9299 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9300 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9301 // note: go back to remove entries, otherwise, a remove + add will skip the add 9302 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9303 } 9304 } 9305 9306 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9307 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9308 if (le_device_db_index >= le_device_db_max_count()) return; 9309 uint8_t offset = le_device_db_index >> 3; 9310 uint8_t mask = 1 << (le_device_db_index & 7); 9311 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9312 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9313 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9314 } 9315 } 9316 9317 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9318 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9319 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9320 } 9321 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9322 // restart le resolving list update 9323 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9324 } 9325 return ERROR_CODE_SUCCESS; 9326 } 9327 9328 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9329 hci_stack->le_privacy_mode = privacy_mode; 9330 } 9331 #endif 9332 9333 #ifdef ENABLE_BLE 9334 #ifdef ENABLE_LE_CENTRAL 9335 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9336 9337 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9338 // check if already in list 9339 btstack_linked_list_iterator_t it; 9340 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9341 while (btstack_linked_list_iterator_has_next(&it)) { 9342 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9343 if (entry->sid != advertising_sid) { 9344 continue; 9345 } 9346 if (entry->address_type != address_type) { 9347 continue; 9348 } 9349 if (memcmp(entry->address, address, 6) != 0) { 9350 continue; 9351 } 9352 // disallow if already scheduled to add 9353 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9354 return ERROR_CODE_COMMAND_DISALLOWED; 9355 } 9356 // still on controller, but scheduled to remove -> re-add 9357 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9358 return ERROR_CODE_SUCCESS; 9359 } 9360 // alloc and add to list 9361 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9362 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9363 entry->sid = advertising_sid; 9364 entry->address_type = address_type; 9365 (void)memcpy(entry->address, address, 6); 9366 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9367 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9368 return ERROR_CODE_SUCCESS; 9369 } 9370 9371 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9372 btstack_linked_list_iterator_t it; 9373 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9374 while (btstack_linked_list_iterator_has_next(&it)){ 9375 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9376 if (entry->sid != advertising_sid) { 9377 continue; 9378 } 9379 if (entry->address_type != address_type) { 9380 continue; 9381 } 9382 if (memcmp(entry->address, address, 6) != 0) { 9383 continue; 9384 } 9385 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9386 // remove from controller if already present 9387 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9388 } else { 9389 // directly remove entry from whitelist 9390 btstack_linked_list_iterator_remove(&it); 9391 btstack_memory_periodic_advertiser_list_entry_free(entry); 9392 } 9393 return ERROR_CODE_SUCCESS; 9394 } 9395 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9396 } 9397 9398 static void hci_periodic_advertiser_list_clear(void){ 9399 btstack_linked_list_iterator_t it; 9400 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9401 while (btstack_linked_list_iterator_has_next(&it)){ 9402 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9403 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9404 // remove from controller if already present 9405 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9406 continue; 9407 } 9408 // directly remove entry from whitelist 9409 btstack_linked_list_iterator_remove(&it); 9410 btstack_memory_periodic_advertiser_list_entry_free(entry); 9411 } 9412 } 9413 9414 uint8_t gap_periodic_advertiser_list_clear(void){ 9415 hci_periodic_advertiser_list_clear(); 9416 hci_run(); 9417 return ERROR_CODE_SUCCESS; 9418 } 9419 9420 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9421 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9422 if (status){ 9423 return status; 9424 } 9425 hci_run(); 9426 return ERROR_CODE_SUCCESS; 9427 } 9428 9429 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9430 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9431 if (status){ 9432 return status; 9433 } 9434 hci_run(); 9435 return ERROR_CODE_SUCCESS; 9436 } 9437 9438 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9439 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9440 // abort if already active 9441 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9442 return ERROR_CODE_COMMAND_DISALLOWED; 9443 } 9444 // store request 9445 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9446 hci_stack->le_periodic_sync_options = options; 9447 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9448 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9449 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9450 hci_stack->le_periodic_sync_skip = skip; 9451 hci_stack->le_periodic_sync_timeout = sync_timeout; 9452 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9453 9454 hci_run(); 9455 return ERROR_CODE_SUCCESS; 9456 } 9457 9458 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9459 // abort if not requested 9460 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9461 return ERROR_CODE_COMMAND_DISALLOWED; 9462 } 9463 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9464 hci_run(); 9465 return ERROR_CODE_SUCCESS; 9466 } 9467 9468 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9469 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9470 return ERROR_CODE_COMMAND_DISALLOWED; 9471 } 9472 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9473 hci_run(); 9474 return ERROR_CODE_SUCCESS; 9475 } 9476 9477 #endif 9478 #endif 9479 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9480 static hci_iso_stream_t * 9481 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9482 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9483 if (iso_stream != NULL){ 9484 } else { 9485 iso_stream->iso_type = iso_type; 9486 iso_stream->state = state; 9487 iso_stream->group_id = group_id; 9488 iso_stream->stream_id = stream_id; 9489 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9490 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9491 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9492 } 9493 return iso_stream; 9494 } 9495 9496 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9497 btstack_linked_list_iterator_t it; 9498 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9499 while (btstack_linked_list_iterator_has_next(&it)){ 9500 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9501 if (iso_stream->cis_handle == con_handle ) { 9502 return iso_stream; 9503 } 9504 } 9505 return NULL; 9506 } 9507 9508 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9509 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9510 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9511 btstack_memory_hci_iso_stream_free(iso_stream); 9512 } 9513 9514 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9515 btstack_linked_list_iterator_t it; 9516 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9517 while (btstack_linked_list_iterator_has_next(&it)){ 9518 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9519 if ((iso_stream->group_id == group_id) && 9520 (iso_stream->iso_type == iso_type)){ 9521 btstack_linked_list_iterator_remove(&it); 9522 btstack_memory_hci_iso_stream_free(iso_stream); 9523 } 9524 } 9525 } 9526 9527 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9528 btstack_linked_list_iterator_t it; 9529 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9530 while (btstack_linked_list_iterator_has_next(&it)){ 9531 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9532 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9533 (iso_stream->group_id == group_id)){ 9534 btstack_linked_list_iterator_remove(&it); 9535 btstack_memory_hci_iso_stream_free(iso_stream); 9536 } 9537 } 9538 } 9539 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9540 btstack_linked_list_iterator_t it; 9541 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9542 while (btstack_linked_list_iterator_has_next(&it)){ 9543 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9544 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9545 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9546 } 9547 } 9548 } 9549 9550 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9551 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9552 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9553 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9554 return (sdu_len_offset + 2 + sdu_len) == size; 9555 } 9556 9557 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9558 if (hci_stack->iso_packet_handler == NULL) { 9559 return; 9560 } 9561 if (size < 4) { 9562 return; 9563 } 9564 9565 // parse header 9566 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9567 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9568 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9569 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9570 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9571 9572 // assert packet is complete 9573 if ((iso_data_len + 4u) != size){ 9574 return; 9575 } 9576 9577 if ((pb_flag & 0x01) == 0){ 9578 if (pb_flag == 0x02){ 9579 // The ISO_Data_Load field contains a header and a complete SDU. 9580 if (hci_iso_sdu_complete(packet, size)) { 9581 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9582 } 9583 } else { 9584 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9585 if (iso_stream == NULL){ 9586 return; 9587 } 9588 if (size > HCI_ISO_PAYLOAD_SIZE){ 9589 return; 9590 } 9591 memcpy(iso_stream->reassembly_buffer, packet, size); 9592 // fix pb_flag 9593 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9594 iso_stream->reassembly_pos = size; 9595 } 9596 } else { 9597 // iso_data_load contains continuation or last fragment of an SDU 9598 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9599 if (ts_flag != 0){ 9600 return; 9601 } 9602 // append fragment 9603 if (iso_stream == NULL){ 9604 return; 9605 } 9606 if (iso_stream->reassembly_pos == 0){ 9607 return; 9608 } 9609 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9610 // reset reassembly buffer 9611 iso_stream->reassembly_pos = 0; 9612 return; 9613 } 9614 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9615 iso_stream->reassembly_pos += iso_data_len; 9616 9617 // deliver if last fragment and SDU complete 9618 if (pb_flag == 0x03){ 9619 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9620 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9621 } 9622 iso_stream->reassembly_pos = 0; 9623 } 9624 } 9625 } 9626 9627 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9628 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9629 uint16_t pos = 0; 9630 event[pos++] = HCI_EVENT_META_GAP; 9631 event[pos++] = 4 + (2 * big->num_bis); 9632 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9633 event[pos++] = status; 9634 event[pos++] = big->big_handle; 9635 event[pos++] = big->num_bis; 9636 uint8_t i; 9637 for (i=0;i<big->num_bis;i++){ 9638 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9639 pos += 2; 9640 } 9641 hci_emit_event(event, pos, 0); 9642 } 9643 9644 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9645 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9646 uint16_t pos = 0; 9647 event[pos++] = HCI_EVENT_META_GAP; 9648 event[pos++] = 4 + (2 * cig->num_cis); 9649 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9650 event[pos++] = status; 9651 event[pos++] = cig->cig_id; 9652 event[pos++] = cig->num_cis; 9653 uint8_t i; 9654 for (i=0;i<cig->num_cis;i++){ 9655 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9656 pos += 2; 9657 } 9658 hci_emit_event(event, pos, 0); 9659 } 9660 9661 static void 9662 hci_emit_cis_created(uint8_t status, uint8_t cig_id, uint8_t cis_id, hci_con_handle_t cis_con_handle, 9663 hci_con_handle_t acl_con_handle) { 9664 uint8_t event [7]; 9665 uint16_t pos = 0; 9666 event[pos++] = HCI_EVENT_META_GAP; 9667 event[pos++] = 5; 9668 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9669 event[pos++] = status; 9670 event[pos++] = cig_id; 9671 little_endian_store_16(event, pos, cis_con_handle); 9672 pos += 2; 9673 hci_emit_event(event, pos, 0); 9674 } 9675 9676 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9677 uint8_t event [4]; 9678 uint16_t pos = 0; 9679 event[pos++] = HCI_EVENT_META_GAP; 9680 event[pos++] = 2; 9681 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9682 event[pos++] = big->big_handle; 9683 hci_emit_event(event, pos, 0); 9684 } 9685 9686 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9687 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9688 uint16_t pos = 0; 9689 event[pos++] = HCI_EVENT_META_GAP; 9690 event[pos++] = 4; 9691 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9692 event[pos++] = status; 9693 event[pos++] = big_sync->big_handle; 9694 event[pos++] = big_sync->num_bis; 9695 uint8_t i; 9696 for (i=0;i<big_sync->num_bis;i++){ 9697 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9698 pos += 2; 9699 } 9700 hci_emit_event(event, pos, 0); 9701 } 9702 9703 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9704 uint8_t event [4]; 9705 uint16_t pos = 0; 9706 event[pos++] = HCI_EVENT_META_GAP; 9707 event[pos++] = 2; 9708 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9709 event[pos++] = big_handle; 9710 hci_emit_event(event, pos, 0); 9711 } 9712 9713 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9714 uint8_t event[6]; 9715 uint16_t pos = 0; 9716 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9717 event[pos++] = sizeof(event) - 2; 9718 event[pos++] = big->big_handle; 9719 event[pos++] = bis_index; 9720 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9721 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9722 } 9723 9724 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9725 uint8_t event[4]; 9726 uint16_t pos = 0; 9727 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9728 event[pos++] = sizeof(event) - 2; 9729 little_endian_store_16(event, pos, cis_con_handle); 9730 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9731 } 9732 9733 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9734 btstack_linked_list_iterator_t it; 9735 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9736 while (btstack_linked_list_iterator_has_next(&it)){ 9737 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9738 if ( big->big_handle == big_handle ) { 9739 return big; 9740 } 9741 } 9742 return NULL; 9743 } 9744 9745 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9746 btstack_linked_list_iterator_t it; 9747 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9748 while (btstack_linked_list_iterator_has_next(&it)){ 9749 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9750 if ( big_sync->big_handle == big_handle ) { 9751 return big_sync; 9752 } 9753 } 9754 return NULL; 9755 } 9756 9757 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9758 hci_stack->iso_packets_to_queue = num_packets; 9759 } 9760 9761 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9762 btstack_linked_list_iterator_t it; 9763 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9764 while (btstack_linked_list_iterator_has_next(&it)){ 9765 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9766 if ( cig->cig_id == cig_id ) { 9767 return cig; 9768 } 9769 } 9770 return NULL; 9771 } 9772 9773 static void hci_iso_notify_can_send_now(void){ 9774 9775 // BIG 9776 9777 btstack_linked_list_iterator_t it; 9778 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9779 while (btstack_linked_list_iterator_has_next(&it)){ 9780 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9781 // track number completed packet timestamps 9782 if (big->num_completed_timestamp_current_valid){ 9783 big->num_completed_timestamp_current_valid = false; 9784 if (big->num_completed_timestamp_previous_valid){ 9785 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9786 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9787 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9788 big->num_completed_timestamp_previous_ms); 9789 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9790 // to catch up, skip packet on all BIS 9791 uint8_t i; 9792 for (i=0;i<big->num_bis;i++){ 9793 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9794 if (iso_stream){ 9795 iso_stream->num_packets_to_skip++; 9796 } 9797 } 9798 } 9799 } 9800 big->num_completed_timestamp_previous_valid = true; 9801 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9802 } 9803 9804 if (big->can_send_now_requested){ 9805 // check if no outgoing iso packets pending and no can send now have to be emitted 9806 uint8_t i; 9807 bool can_send = true; 9808 uint8_t num_iso_queued_minimum = 0; 9809 for (i=0;i<big->num_bis;i++){ 9810 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9811 if (iso_stream == NULL) continue; 9812 // handle case where individual ISO packet was sent too late: 9813 // for each additionally queued packet, a new one needs to get skipped 9814 if (i==0){ 9815 num_iso_queued_minimum = iso_stream->num_packets_sent; 9816 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 9817 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 9818 iso_stream->num_packets_to_skip += num_packets_to_skip; 9819 iso_stream->num_packets_sent -= num_packets_to_skip; 9820 } 9821 // check if we can send now 9822 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 9823 can_send = false; 9824 break; 9825 } 9826 } 9827 if (can_send){ 9828 // propagate can send now to individual streams 9829 big->can_send_now_requested = false; 9830 for (i=0;i<big->num_bis;i++){ 9831 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9832 iso_stream->emit_ready_to_send = true; 9833 } 9834 } 9835 } 9836 } 9837 9838 if (hci_stack->hci_packet_buffer_reserved) return; 9839 9840 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9841 while (btstack_linked_list_iterator_has_next(&it)){ 9842 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9843 // report bis ready 9844 uint8_t i; 9845 for (i=0;i<big->num_bis;i++){ 9846 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9847 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9848 iso_stream->emit_ready_to_send = false; 9849 hci_emit_bis_can_send_now(big, i); 9850 break; 9851 } 9852 } 9853 } 9854 9855 // CIS 9856 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9857 while (btstack_linked_list_iterator_has_next(&it)) { 9858 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9859 if ((iso_stream->can_send_now_requested) && 9860 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 9861 iso_stream->can_send_now_requested = false; 9862 hci_emit_cis_can_send_now(iso_stream->cis_handle); 9863 } 9864 } 9865 } 9866 9867 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9868 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9869 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9870 } 9871 if (big_params->num_bis == 0){ 9872 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9873 } 9874 if (big_params->num_bis > MAX_NR_BIS){ 9875 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9876 } 9877 9878 // reserve ISO Streams 9879 uint8_t i; 9880 uint8_t status = ERROR_CODE_SUCCESS; 9881 for (i=0;i<big_params->num_bis;i++){ 9882 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_params->big_handle, i); 9883 if (iso_stream == NULL) { 9884 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 9885 break; 9886 } 9887 } 9888 9889 // free structs on error 9890 if (status != ERROR_CODE_SUCCESS){ 9891 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 9892 return status; 9893 } 9894 9895 le_audio_big_t * big = storage; 9896 big->big_handle = big_params->big_handle; 9897 big->params = big_params; 9898 big->state = LE_AUDIO_BIG_STATE_CREATE; 9899 big->num_bis = big_params->num_bis; 9900 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9901 9902 hci_run(); 9903 9904 return ERROR_CODE_SUCCESS; 9905 } 9906 9907 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9908 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9909 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9910 } 9911 if (big_sync_params->num_bis == 0){ 9912 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9913 } 9914 if (big_sync_params->num_bis > MAX_NR_BIS){ 9915 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9916 } 9917 9918 le_audio_big_sync_t * big_sync = storage; 9919 big_sync->big_handle = big_sync_params->big_handle; 9920 big_sync->params = big_sync_params; 9921 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9922 big_sync->num_bis = big_sync_params->num_bis; 9923 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9924 9925 hci_run(); 9926 9927 return ERROR_CODE_SUCCESS; 9928 } 9929 9930 uint8_t gap_big_terminate(uint8_t big_handle){ 9931 le_audio_big_t * big = hci_big_for_handle(big_handle); 9932 if (big == NULL){ 9933 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9934 } 9935 switch (big->state){ 9936 case LE_AUDIO_BIG_STATE_CREATE: 9937 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9938 hci_emit_big_terminated(big); 9939 break; 9940 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9941 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9942 break; 9943 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9944 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9945 case LE_AUDIO_BIG_STATE_ACTIVE: 9946 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9947 hci_run(); 9948 break; 9949 default: 9950 return ERROR_CODE_COMMAND_DISALLOWED; 9951 } 9952 return ERROR_CODE_SUCCESS; 9953 } 9954 9955 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9956 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9957 if (big_sync == NULL){ 9958 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9959 } 9960 switch (big_sync->state){ 9961 case LE_AUDIO_BIG_STATE_CREATE: 9962 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9963 hci_emit_big_sync_stopped(big_handle); 9964 break; 9965 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9966 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9967 break; 9968 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9969 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9970 case LE_AUDIO_BIG_STATE_ACTIVE: 9971 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 9972 hci_run(); 9973 break; 9974 default: 9975 return ERROR_CODE_COMMAND_DISALLOWED; 9976 } 9977 return ERROR_CODE_SUCCESS; 9978 } 9979 9980 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 9981 le_audio_big_t * big = hci_big_for_handle(big_handle); 9982 if (big == NULL){ 9983 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9984 } 9985 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 9986 return ERROR_CODE_COMMAND_DISALLOWED; 9987 } 9988 big->can_send_now_requested = true; 9989 hci_iso_notify_can_send_now(); 9990 return ERROR_CODE_SUCCESS; 9991 } 9992 9993 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 9994 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 9995 if (iso_stream == NULL){ 9996 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9997 } 9998 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 9999 return ERROR_CODE_COMMAND_DISALLOWED; 10000 } 10001 iso_stream->can_send_now_requested = true; 10002 hci_iso_notify_can_send_now(); 10003 return ERROR_CODE_SUCCESS; 10004 } 10005 10006 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10007 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10008 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10009 } 10010 if (cig_params->num_cis == 0){ 10011 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10012 } 10013 if (cig_params->num_cis > MAX_NR_BIS){ 10014 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10015 } 10016 10017 // reserve ISO Streams 10018 uint8_t i; 10019 uint8_t status = ERROR_CODE_SUCCESS; 10020 for (i=0;i<cig_params->num_cis;i++){ 10021 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10022 if (iso_stream != NULL) { 10023 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10024 break; 10025 } 10026 } 10027 10028 // free structs on error 10029 if (status != ERROR_CODE_SUCCESS){ 10030 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10031 return status; 10032 } 10033 10034 le_audio_cig_t * cig = storage; 10035 cig->cig_id = cig_params->cig_id; 10036 cig->num_cis = cig_params->num_cis; 10037 cig->params = cig_params; 10038 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10039 for (i=0;i<cig->num_cis;i++){ 10040 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10041 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10042 cig->cis_setup_active[i] = false; 10043 cig->cis_established[i] = false; 10044 } 10045 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10046 10047 hci_run(); 10048 10049 return ERROR_CODE_SUCCESS; 10050 } 10051 10052 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10053 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10054 if (cig == NULL){ 10055 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10056 } 10057 10058 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10059 return ERROR_CODE_COMMAND_DISALLOWED; 10060 } 10061 10062 // store ACL Connection Handles 10063 uint8_t i; 10064 for (i=0;i<cig->num_cis;i++){ 10065 // check that all con handles exist and store 10066 hci_con_handle_t cis_handle = cis_con_handles[i]; 10067 uint8_t j; 10068 bool found = false; 10069 for (j=0;j<cig->num_cis;j++){ 10070 if (cig->cis_con_handles[j] == cis_handle){ 10071 cig->acl_con_handles[j] = acl_con_handles[j]; 10072 found = true; 10073 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10074 btstack_assert(iso_stream != NULL); 10075 iso_stream->acl_handle = acl_con_handles[j]; 10076 break; 10077 } 10078 } 10079 if (!found){ 10080 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10081 } 10082 } 10083 10084 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10085 hci_run(); 10086 10087 return ERROR_CODE_SUCCESS; 10088 } 10089 10090 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10091 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10092 if (iso_stream == NULL){ 10093 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10094 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10095 } 10096 10097 // set next state and continue 10098 iso_stream->state = state; 10099 hci_run(); 10100 return ERROR_CODE_SUCCESS; 10101 } 10102 10103 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10104 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10105 } 10106 10107 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10108 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10109 } 10110 10111 10112 #endif 10113 #endif /* ENABLE_BLE */ 10114 10115 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10116 void hci_setup_test_connections_fuzz(void){ 10117 hci_connection_t * conn; 10118 10119 // default address: 66:55:44:33:00:01 10120 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10121 10122 // setup Controller info 10123 hci_stack->num_cmd_packets = 255; 10124 hci_stack->acl_packets_total_num = 255; 10125 10126 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10127 addr[5] = 0x01; 10128 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 10129 conn->con_handle = addr[5]; 10130 conn->role = HCI_ROLE_SLAVE; 10131 conn->state = RECEIVED_CONNECTION_REQUEST; 10132 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10133 10134 // setup incoming Classic SCO connection with con handle 0x0002 10135 addr[5] = 0x02; 10136 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 10137 conn->con_handle = addr[5]; 10138 conn->role = HCI_ROLE_SLAVE; 10139 conn->state = RECEIVED_CONNECTION_REQUEST; 10140 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10141 10142 // setup ready Classic ACL connection with con handle 0x0003 10143 addr[5] = 0x03; 10144 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 10145 conn->con_handle = addr[5]; 10146 conn->role = HCI_ROLE_SLAVE; 10147 conn->state = OPEN; 10148 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10149 10150 // setup ready Classic SCO connection with con handle 0x0004 10151 addr[5] = 0x04; 10152 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 10153 conn->con_handle = addr[5]; 10154 conn->role = HCI_ROLE_SLAVE; 10155 conn->state = OPEN; 10156 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10157 10158 // setup ready LE ACL connection with con handle 0x005 and public address 10159 addr[5] = 0x05; 10160 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 10161 conn->con_handle = addr[5]; 10162 conn->role = HCI_ROLE_SLAVE; 10163 conn->state = OPEN; 10164 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10165 conn->sm_connection.sm_connection_encrypted = 1; 10166 } 10167 10168 void hci_free_connections_fuzz(void){ 10169 btstack_linked_list_iterator_t it; 10170 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10171 while (btstack_linked_list_iterator_has_next(&it)){ 10172 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10173 btstack_linked_list_iterator_remove(&it); 10174 btstack_memory_hci_connection_free(con); 10175 } 10176 } 10177 void hci_simulate_working_fuzz(void){ 10178 hci_stack->le_scanning_param_update = false; 10179 hci_init_done(); 10180 hci_stack->num_cmd_packets = 255; 10181 } 10182 #endif 10183