1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 171 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 172 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 173 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 174 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 175 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 176 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 178 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 179 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 180 181 // enumerate supported commands 182 #define X(name, offset, bit) name, 183 enum { 184 SUPPORTED_HCI_COMMANDS 185 SUPPORTED_HCI_COMMANDS_COUNT 186 }; 187 #undef X 188 189 // prototypes 190 #ifdef ENABLE_CLASSIC 191 static void hci_update_scan_enable(void); 192 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 193 static int hci_local_ssp_activated(void); 194 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 195 static bool hci_ssp_supported(hci_connection_t * connection); 196 static void hci_notify_if_sco_can_send_now(void); 197 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 198 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 199 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 200 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 201 static void hci_connection_timestamp(hci_connection_t *connection); 202 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 203 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 204 #endif 205 206 static int hci_power_control_on(void); 207 static void hci_power_control_off(void); 208 static void hci_state_reset(void); 209 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 210 static void hci_emit_transport_packet_sent(void); 211 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 212 static void hci_emit_nr_connections_changed(void); 213 static void hci_emit_hci_open_failed(void); 214 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 215 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 216 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 217 static void hci_run(void); 218 static int hci_is_le_connection(hci_connection_t * connection); 219 220 #ifdef ENABLE_CLASSIC 221 static int hci_have_usb_transport(void); 222 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 223 #endif 224 225 #ifdef ENABLE_BLE 226 #ifdef ENABLE_LE_CENTRAL 227 // called from test/ble_client/advertising_data_parser.c 228 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 229 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 230 static hci_connection_t * gap_get_outgoing_connection(void); 231 static void hci_le_scan_stop(void); 232 static bool hci_run_general_gap_le(void); 233 #endif 234 #ifdef ENABLE_LE_PERIPHERAL 235 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 236 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 237 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 238 #endif /* ENABLE_LE_PERIPHERAL */ 239 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 240 static hci_iso_stream_t * hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id); 241 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 242 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 243 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 244 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 245 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 246 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size); 247 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 248 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 249 static void hci_iso_notify_can_send_now(void); 250 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 251 static void hci_emit_big_terminated(const le_audio_big_t * big); 252 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 253 static void hci_emit_big_sync_stopped(uint8_t big_handle); 254 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 255 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 256 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 257 258 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 259 #endif /* ENABLE_BLE */ 260 261 // the STACK is here 262 #ifndef HAVE_MALLOC 263 static hci_stack_t hci_stack_static; 264 #endif 265 static hci_stack_t * hci_stack = NULL; 266 267 #ifdef ENABLE_CLASSIC 268 // default name 269 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 270 271 // test helper 272 static uint8_t disable_l2cap_timeouts = 0; 273 #endif 274 275 // reset connection state on create and on reconnect 276 // don't overwrite addr, con handle, role 277 static void hci_connection_init(hci_connection_t * conn){ 278 conn->authentication_flags = AUTH_FLAG_NONE; 279 conn->bonding_flags = 0; 280 conn->requested_security_level = LEVEL_0; 281 #ifdef ENABLE_CLASSIC 282 conn->request_role = HCI_ROLE_INVALID; 283 conn->sniff_subrating_max_latency = 0xffff; 284 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 285 conn->link_key_type = INVALID_LINK_KEY; 286 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 287 btstack_run_loop_set_timer_context(&conn->timeout, conn); 288 hci_connection_timestamp(conn); 289 #endif 290 conn->acl_recombination_length = 0; 291 conn->acl_recombination_pos = 0; 292 conn->num_packets_sent = 0; 293 294 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 295 #ifdef ENABLE_BLE 296 conn->le_phy_update_all_phys = 0xff; 297 #endif 298 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 299 conn->le_max_tx_octets = 27; 300 #endif 301 #ifdef ENABLE_CLASSIC_PAIRING_OOB 302 conn->classic_oob_c_192 = NULL; 303 conn->classic_oob_r_192 = NULL; 304 conn->classic_oob_c_256 = NULL; 305 conn->classic_oob_r_256 = NULL; 306 #endif 307 } 308 309 /** 310 * create connection for given address 311 * 312 * @return connection OR NULL, if no memory left 313 */ 314 static hci_connection_t * 315 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 316 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 317 318 hci_connection_t * conn = btstack_memory_hci_connection_get(); 319 if (!conn) return NULL; 320 hci_connection_init(conn); 321 322 bd_addr_copy(conn->address, addr); 323 conn->address_type = addr_type; 324 conn->con_handle = HCI_CON_HANDLE_INVALID; 325 conn->role = role; 326 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 327 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 328 #endif 329 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 330 331 return conn; 332 } 333 334 335 /** 336 * get le connection parameter range 337 * 338 * @return le connection parameter range struct 339 */ 340 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 341 *range = hci_stack->le_connection_parameter_range; 342 } 343 344 /** 345 * set le connection parameter range 346 * 347 */ 348 349 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 350 hci_stack->le_connection_parameter_range = *range; 351 } 352 353 /** 354 * @brief Test if connection parameters are inside in existing rage 355 * @param conn_interval_min (unit: 1.25ms) 356 * @param conn_interval_max (unit: 1.25ms) 357 * @param conn_latency 358 * @param supervision_timeout (unit: 10ms) 359 * @return 1 if included 360 */ 361 int gap_connection_parameter_range_included(le_connection_parameter_range_t * existing_range, uint16_t le_conn_interval_min, uint16_t le_conn_interval_max, uint16_t le_conn_latency, uint16_t le_supervision_timeout){ 362 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 363 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 364 365 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 366 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 367 368 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 369 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 370 371 return 1; 372 } 373 374 /** 375 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 376 * @note: default: 1 377 * @param max_peripheral_connections 378 */ 379 #ifdef ENABLE_LE_PERIPHERAL 380 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 381 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 382 } 383 #endif 384 385 /** 386 * get hci connections iterator 387 * 388 * @return hci connections iterator 389 */ 390 391 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 392 btstack_linked_list_iterator_init(it, &hci_stack->connections); 393 } 394 395 /** 396 * get connection for a given handle 397 * 398 * @return connection OR NULL, if not found 399 */ 400 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 401 btstack_linked_list_iterator_t it; 402 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 403 while (btstack_linked_list_iterator_has_next(&it)){ 404 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 405 if ( item->con_handle == con_handle ) { 406 return item; 407 } 408 } 409 return NULL; 410 } 411 412 /** 413 * get connection for given address 414 * 415 * @return connection OR NULL, if not found 416 */ 417 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 418 btstack_linked_list_iterator_t it; 419 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 420 while (btstack_linked_list_iterator_has_next(&it)){ 421 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 422 if (connection->address_type != addr_type) continue; 423 if (memcmp(addr, connection->address, 6) != 0) continue; 424 return connection; 425 } 426 return NULL; 427 } 428 429 #ifdef ENABLE_CLASSIC 430 431 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 432 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 433 } 434 435 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 436 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 437 } 438 439 #ifdef ENABLE_SCO_OVER_HCI 440 static int hci_number_sco_connections(void){ 441 int connections = 0; 442 btstack_linked_list_iterator_t it; 443 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 444 while (btstack_linked_list_iterator_has_next(&it)){ 445 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 446 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 447 connections++; 448 } 449 return connections; 450 } 451 #endif 452 453 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 454 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 455 #ifdef HAVE_EMBEDDED_TICK 456 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 457 // connections might be timed out 458 hci_emit_l2cap_check_timeout(connection); 459 } 460 #else 461 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 462 // connections might be timed out 463 hci_emit_l2cap_check_timeout(connection); 464 } 465 #endif 466 } 467 468 static void hci_connection_timestamp(hci_connection_t *connection){ 469 #ifdef HAVE_EMBEDDED_TICK 470 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 471 #else 472 connection->timestamp = btstack_run_loop_get_time_ms(); 473 #endif 474 } 475 476 /** 477 * add authentication flags and reset timer 478 * @note: assumes classic connection 479 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 480 */ 481 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 482 bd_addr_t addr; 483 reverse_bd_addr(bd_addr, addr); 484 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 485 if (conn) { 486 connectionSetAuthenticationFlags(conn, flags); 487 hci_connection_timestamp(conn); 488 } 489 } 490 491 static bool hci_pairing_active(hci_connection_t * hci_connection){ 492 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 493 } 494 495 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 496 if (hci_pairing_active(hci_connection)) return; 497 if (ssp){ 498 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 499 } else { 500 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 501 } 502 // if we are initiator, we have sent an HCI Authenticate Request 503 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 504 505 // if we are responder, use minimal service security level as required level 506 if (!initiator){ 507 hci_connection->requested_security_level = (gap_security_level_t) btstack_max((uint32_t) hci_connection->requested_security_level, (uint32_t) hci_stack->gap_minimal_service_security_level); 508 } 509 510 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 511 512 uint8_t event[12]; 513 event[0] = GAP_EVENT_PAIRING_STARTED; 514 event[1] = 10; 515 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 516 reverse_bd_addr(hci_connection->address, &event[4]); 517 event[10] = (uint8_t) ssp; 518 event[11] = (uint8_t) initiator; 519 hci_emit_event(event, sizeof(event), 1); 520 } 521 522 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 523 hci_connection->requested_security_level = LEVEL_0; 524 if (!hci_pairing_active(hci_connection)) return; 525 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 526 #ifdef ENABLE_CLASSIC_PAIRING_OOB 527 hci_connection->classic_oob_c_192 = NULL; 528 hci_connection->classic_oob_r_192 = NULL; 529 hci_connection->classic_oob_c_256 = NULL; 530 hci_connection->classic_oob_r_256 = NULL; 531 #endif 532 log_info("pairing complete, status %02x", status); 533 534 uint8_t event[11]; 535 event[0] = GAP_EVENT_PAIRING_COMPLETE; 536 event[1] = 9; 537 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 538 reverse_bd_addr(hci_connection->address, &event[4]); 539 event[10] = status; 540 hci_emit_event(event, sizeof(event), 1); 541 542 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 543 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 544 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 545 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 546 hci_connection->bonding_status = status; 547 } 548 } 549 550 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 551 hci_connection_t * conn = hci_connection_for_handle(handle); 552 if (!conn) return false; 553 return hci_pairing_active(conn); 554 } 555 556 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 557 if (!hci_stack->link_key_db) return; 558 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 559 hci_stack->link_key_db->delete_link_key(addr); 560 } 561 562 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 563 if (!hci_stack->link_key_db) return; 564 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 565 hci_stack->link_key_db->put_link_key(addr, link_key, type); 566 } 567 568 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 569 if (!hci_stack->link_key_db) return false; 570 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 571 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 572 return result; 573 } 574 575 void gap_delete_all_link_keys(void){ 576 bd_addr_t addr; 577 link_key_t link_key; 578 link_key_type_t type; 579 btstack_link_key_iterator_t it; 580 int ok = gap_link_key_iterator_init(&it); 581 if (!ok) { 582 log_error("could not initialize iterator"); 583 return; 584 } 585 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 586 gap_drop_link_key_for_bd_addr(addr); 587 } 588 gap_link_key_iterator_done(&it); 589 } 590 591 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 592 if (!hci_stack->link_key_db) return 0; 593 if (!hci_stack->link_key_db->iterator_init) return 0; 594 return hci_stack->link_key_db->iterator_init(it); 595 } 596 int gap_link_key_iterator_get_next(btstack_link_key_iterator_t * it, bd_addr_t bd_addr, link_key_t link_key, link_key_type_t * type){ 597 if (!hci_stack->link_key_db) return 0; 598 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 599 } 600 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 601 if (!hci_stack->link_key_db) return; 602 hci_stack->link_key_db->iterator_done(it); 603 } 604 #endif 605 606 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 607 switch (address_type){ 608 case BD_ADDR_TYPE_LE_PUBLIC: 609 case BD_ADDR_TYPE_LE_RANDOM: 610 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 611 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 612 return true; 613 default: 614 return false; 615 } 616 } 617 618 static int hci_is_le_connection(hci_connection_t * connection){ 619 return hci_is_le_connection_type(connection->address_type); 620 } 621 622 /** 623 * count connections 624 */ 625 static int nr_hci_connections(void){ 626 int count = 0; 627 btstack_linked_item_t *it; 628 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 629 count++; 630 } 631 return count; 632 } 633 634 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 635 636 unsigned int num_packets_sent_classic = 0; 637 unsigned int num_packets_sent_le = 0; 638 639 btstack_linked_item_t *it; 640 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 641 hci_connection_t * connection = (hci_connection_t *) it; 642 if (hci_is_le_connection(connection)){ 643 num_packets_sent_le += connection->num_packets_sent; 644 } 645 if (connection->address_type == BD_ADDR_TYPE_ACL){ 646 num_packets_sent_classic += connection->num_packets_sent; 647 } 648 } 649 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 650 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 651 int free_slots_le = 0; 652 653 if (free_slots_classic < 0){ 654 log_error("hci_number_free_acl_slots: outgoing classic packets (%u) > total classic packets (%u)", num_packets_sent_classic, hci_stack->acl_packets_total_num); 655 return 0; 656 } 657 658 if (hci_stack->le_acl_packets_total_num){ 659 // if we have LE slots, they are used 660 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 661 if (free_slots_le < 0){ 662 log_error("hci_number_free_acl_slots: outgoing le packets (%u) > total le packets (%u)", num_packets_sent_le, hci_stack->le_acl_packets_total_num); 663 return 0; 664 } 665 } else { 666 // otherwise, classic slots are used for LE, too 667 free_slots_classic -= num_packets_sent_le; 668 if (free_slots_classic < 0){ 669 log_error("hci_number_free_acl_slots: outgoing classic + le packets (%u + %u) > total packets (%u)", num_packets_sent_classic, num_packets_sent_le, hci_stack->acl_packets_total_num); 670 return 0; 671 } 672 } 673 674 switch (address_type){ 675 case BD_ADDR_TYPE_UNKNOWN: 676 log_error("hci_number_free_acl_slots: unknown address type"); 677 return 0; 678 679 case BD_ADDR_TYPE_ACL: 680 return (uint16_t) free_slots_classic; 681 682 default: 683 if (hci_stack->le_acl_packets_total_num > 0){ 684 return (uint16_t) free_slots_le; 685 } 686 return (uint16_t) free_slots_classic; 687 } 688 } 689 690 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 691 // get connection type 692 hci_connection_t * connection = hci_connection_for_handle(con_handle); 693 if (!connection){ 694 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 695 return 0; 696 } 697 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 698 } 699 700 #ifdef ENABLE_CLASSIC 701 static int hci_number_free_sco_slots(void){ 702 unsigned int num_sco_packets_sent = 0; 703 btstack_linked_item_t *it; 704 if (hci_stack->synchronous_flow_control_enabled){ 705 // explicit flow control 706 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 707 hci_connection_t * connection = (hci_connection_t *) it; 708 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 709 num_sco_packets_sent += connection->num_packets_sent; 710 } 711 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 712 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 713 return 0; 714 } 715 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 716 } else { 717 // implicit flow control -- TODO 718 int num_ready = 0; 719 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 720 hci_connection_t * connection = (hci_connection_t *) it; 721 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 722 if (connection->sco_tx_ready == 0) continue; 723 num_ready++; 724 } 725 return num_ready; 726 } 727 } 728 #endif 729 730 // only used to send HCI Host Number Completed Packets 731 static int hci_can_send_comand_packet_transport(void){ 732 if (hci_stack->hci_packet_buffer_reserved) return 0; 733 734 // check for async hci transport implementations 735 if (hci_stack->hci_transport->can_send_packet_now){ 736 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 737 return 0; 738 } 739 } 740 return 1; 741 } 742 743 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 744 bool hci_can_send_command_packet_now(void){ 745 if (hci_can_send_comand_packet_transport() == 0) return false; 746 return hci_stack->num_cmd_packets > 0u; 747 } 748 749 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 750 // check for async hci transport implementations 751 if (!hci_stack->hci_transport->can_send_packet_now) return true; 752 return hci_stack->hci_transport->can_send_packet_now(packet_type); 753 } 754 755 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 756 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 757 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 758 } 759 760 bool hci_can_send_acl_le_packet_now(void){ 761 if (hci_stack->hci_packet_buffer_reserved) return false; 762 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 763 } 764 765 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 766 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 767 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 768 } 769 770 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 771 if (hci_stack->hci_packet_buffer_reserved) return false; 772 return hci_can_send_prepared_acl_packet_now(con_handle); 773 } 774 775 #ifdef ENABLE_CLASSIC 776 bool hci_can_send_acl_classic_packet_now(void){ 777 if (hci_stack->hci_packet_buffer_reserved) return false; 778 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 779 } 780 781 bool hci_can_send_prepared_sco_packet_now(void){ 782 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 783 if (hci_have_usb_transport()){ 784 return hci_stack->sco_can_send_now; 785 } else { 786 return hci_number_free_sco_slots() > 0; 787 } 788 } 789 790 bool hci_can_send_sco_packet_now(void){ 791 if (hci_stack->hci_packet_buffer_reserved) return false; 792 return hci_can_send_prepared_sco_packet_now(); 793 } 794 795 void hci_request_sco_can_send_now_event(void){ 796 hci_stack->sco_waiting_for_can_send_now = 1; 797 hci_notify_if_sco_can_send_now(); 798 } 799 #endif 800 801 // used for internal checks in l2cap.c 802 bool hci_is_packet_buffer_reserved(void){ 803 return hci_stack->hci_packet_buffer_reserved; 804 } 805 806 // reserves outgoing packet buffer. 807 // @return 1 if successful 808 bool hci_reserve_packet_buffer(void){ 809 if (hci_stack->hci_packet_buffer_reserved) { 810 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 811 return false; 812 } 813 hci_stack->hci_packet_buffer_reserved = true; 814 return true; 815 } 816 817 void hci_release_packet_buffer(void){ 818 hci_stack->hci_packet_buffer_reserved = false; 819 } 820 821 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 822 static int hci_transport_synchronous(void){ 823 return hci_stack->hci_transport->can_send_packet_now == NULL; 824 } 825 826 // used for debugging 827 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 828 static void hci_controller_dump_packets(void){ 829 // format: "{handle:04x}:{count:02d} " 830 char summaries[3][7 * 8 + 1]; 831 uint16_t totals[3]; 832 uint8_t index; 833 for (index = 0 ; index < 3 ; index++){ 834 summaries[index][0] = 0; 835 totals[index] = 0; 836 } 837 btstack_linked_item_t *it; 838 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 839 hci_connection_t * connection = (hci_connection_t *) it; 840 switch (connection->address_type){ 841 case BD_ADDR_TYPE_ACL: 842 index = 0; 843 break; 844 case BD_ADDR_TYPE_SCO: 845 index = 2; 846 break; 847 default: 848 index = 1; 849 break; 850 } 851 totals[index] += connection->num_packets_sent; 852 char item_text[10]; 853 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 854 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 855 } 856 for (index = 0 ; index < 3 ; index++){ 857 if (summaries[index][0] == 0){ 858 summaries[index][0] = '-'; 859 summaries[index][1] = 0; 860 } 861 } 862 log_info("Controller ACL BR/EDR: %s total %u / LE: %s total %u / SCO: %s total %u", summaries[0], totals[0], summaries[1], totals[1], summaries[2], totals[2]); 863 } 864 #endif 865 866 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 867 868 // log_info("hci_send_acl_packet_fragments %u/%u (con 0x%04x)", hci_stack->acl_fragmentation_pos, hci_stack->acl_fragmentation_total_size, connection->con_handle); 869 870 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 871 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 872 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 873 max_acl_data_packet_length = hci_stack->le_data_packets_length; 874 } 875 876 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 877 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 878 max_acl_data_packet_length = connection->le_max_tx_octets; 879 } 880 #endif 881 882 log_debug("hci_send_acl_packet_fragments entered"); 883 884 uint8_t status = ERROR_CODE_SUCCESS; 885 // multiple packets could be send on a synchronous HCI transport 886 while (true){ 887 888 log_debug("hci_send_acl_packet_fragments loop entered"); 889 890 // get current data 891 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 892 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 893 bool more_fragments = false; 894 895 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 896 if (current_acl_data_packet_length > max_acl_data_packet_length){ 897 more_fragments = true; 898 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 899 } 900 901 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 902 if (acl_header_pos > 0u){ 903 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 904 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 905 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 906 } 907 908 // update header len 909 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 910 911 // count packet 912 connection->num_packets_sent++; 913 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 914 915 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 916 if (more_fragments){ 917 // update start of next fragment to send 918 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 919 } else { 920 // done 921 hci_stack->acl_fragmentation_pos = 0; 922 hci_stack->acl_fragmentation_total_size = 0; 923 } 924 925 // send packet 926 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 927 const int size = current_acl_data_packet_length + 4; 928 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 929 hci_stack->acl_fragmentation_tx_active = 1; 930 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 931 if (err != 0){ 932 // no error from HCI Transport expected 933 status = ERROR_CODE_HARDWARE_FAILURE; 934 } 935 936 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 937 hci_controller_dump_packets(); 938 #endif 939 940 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 941 942 // done yet? 943 if (!more_fragments) break; 944 945 // can send more? 946 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 947 } 948 949 log_debug("hci_send_acl_packet_fragments loop over"); 950 951 // release buffer now for synchronous transport 952 if (hci_transport_synchronous()){ 953 hci_stack->acl_fragmentation_tx_active = 0; 954 hci_release_packet_buffer(); 955 hci_emit_transport_packet_sent(); 956 } 957 958 return status; 959 } 960 961 // pre: caller has reserved the packet buffer 962 uint8_t hci_send_acl_packet_buffer(int size){ 963 btstack_assert(hci_stack->hci_packet_buffer_reserved); 964 965 uint8_t * packet = hci_stack->hci_packet_buffer; 966 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 967 968 hci_connection_t *connection = hci_connection_for_handle( con_handle); 969 if (!connection) { 970 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 971 hci_release_packet_buffer(); 972 hci_emit_transport_packet_sent(); 973 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 974 } 975 976 // check for free places on Bluetooth module 977 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 978 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 979 hci_release_packet_buffer(); 980 hci_emit_transport_packet_sent(); 981 return BTSTACK_ACL_BUFFERS_FULL; 982 } 983 984 #ifdef ENABLE_CLASSIC 985 hci_connection_timestamp(connection); 986 #endif 987 988 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 989 990 // setup data 991 hci_stack->acl_fragmentation_total_size = size; 992 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 993 994 return hci_send_acl_packet_fragments(connection); 995 } 996 997 #ifdef ENABLE_CLASSIC 998 // pre: caller has reserved the packet buffer 999 uint8_t hci_send_sco_packet_buffer(int size){ 1000 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1001 1002 uint8_t * packet = hci_stack->hci_packet_buffer; 1003 1004 // skip checks in loopback mode 1005 if (!hci_stack->loopback_mode){ 1006 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1007 1008 // check for free places on Bluetooth module 1009 if (!hci_can_send_prepared_sco_packet_now()) { 1010 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1011 hci_release_packet_buffer(); 1012 hci_emit_transport_packet_sent(); 1013 return BTSTACK_ACL_BUFFERS_FULL; 1014 } 1015 1016 // track send packet in connection struct 1017 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1018 if (!connection) { 1019 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1020 hci_release_packet_buffer(); 1021 hci_emit_transport_packet_sent(); 1022 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1023 } 1024 1025 if (hci_have_usb_transport()){ 1026 // token used 1027 hci_stack->sco_can_send_now = false; 1028 } else { 1029 if (hci_stack->synchronous_flow_control_enabled){ 1030 connection->num_packets_sent++; 1031 } else { 1032 connection->sco_tx_ready--; 1033 } 1034 } 1035 } 1036 1037 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1038 1039 #ifdef HAVE_SCO_TRANSPORT 1040 hci_stack->sco_transport->send_packet(packet, size); 1041 hci_release_packet_buffer(); 1042 hci_emit_transport_packet_sent(); 1043 1044 return 0; 1045 #else 1046 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1047 if (hci_transport_synchronous()){ 1048 hci_release_packet_buffer(); 1049 hci_emit_transport_packet_sent(); 1050 } 1051 1052 if (err != 0){ 1053 return ERROR_CODE_HARDWARE_FAILURE; 1054 } 1055 return ERROR_CODE_SUCCESS; 1056 #endif 1057 } 1058 #endif 1059 1060 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1061 static uint8_t hci_send_iso_packet_fragments(void){ 1062 1063 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1064 uint8_t status = ERROR_CODE_SUCCESS; 1065 // multiple packets could be send on a synchronous HCI transport 1066 while (true){ 1067 1068 // get current data 1069 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1070 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1071 bool more_fragments = false; 1072 1073 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1074 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1075 more_fragments = true; 1076 current_iso_data_packet_length = max_iso_data_packet_length; 1077 } 1078 1079 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1080 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1081 uint8_t pb_flags; 1082 if (iso_header_pos == 0u){ 1083 // first fragment, keep TS field 1084 pb_flags = more_fragments ? 0x00 : 0x02; 1085 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1086 } else { 1087 // later fragment, drop TS field 1088 pb_flags = more_fragments ? 0x01 : 0x03; 1089 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1090 } 1091 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1092 1093 // update header len 1094 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1095 1096 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1097 if (more_fragments){ 1098 // update start of next fragment to send 1099 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1100 } else { 1101 // done 1102 hci_stack->iso_fragmentation_pos = 0; 1103 hci_stack->iso_fragmentation_total_size = 0; 1104 } 1105 1106 // send packet 1107 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1108 const int size = current_iso_data_packet_length + 4; 1109 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1110 hci_stack->iso_fragmentation_tx_active = true; 1111 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1112 if (err != 0){ 1113 // no error from HCI Transport expected 1114 status = ERROR_CODE_HARDWARE_FAILURE; 1115 } 1116 1117 // done yet? 1118 if (!more_fragments) break; 1119 1120 // can send more? 1121 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1122 } 1123 1124 // release buffer now for synchronous transport 1125 if (hci_transport_synchronous()){ 1126 hci_stack->iso_fragmentation_tx_active = false; 1127 hci_release_packet_buffer(); 1128 hci_emit_transport_packet_sent(); 1129 } 1130 1131 return status; 1132 } 1133 1134 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1135 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1136 1137 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1138 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1139 if (iso_stream == NULL){ 1140 hci_release_packet_buffer(); 1141 hci_iso_notify_can_send_now(); 1142 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1143 } 1144 1145 // TODO: check for space on controller 1146 1147 // skip iso packets if needed 1148 if (iso_stream->num_packets_to_skip > 0){ 1149 iso_stream->num_packets_to_skip--; 1150 // pretend it was processed and trigger next one 1151 hci_release_packet_buffer(); 1152 hci_iso_notify_can_send_now(); 1153 return ERROR_CODE_SUCCESS; 1154 } 1155 1156 // track outgoing packet sent 1157 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1158 iso_stream->num_packets_sent++; 1159 1160 // setup data 1161 hci_stack->iso_fragmentation_total_size = size; 1162 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1163 1164 return hci_send_iso_packet_fragments(); 1165 } 1166 #endif 1167 1168 static void acl_handler(uint8_t *packet, uint16_t size){ 1169 1170 // get info 1171 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1172 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1173 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1174 uint16_t acl_length = READ_ACL_LENGTH(packet); 1175 1176 // ignore non-registered handle 1177 if (!conn){ 1178 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1179 return; 1180 } 1181 1182 // assert packet is complete 1183 if ((acl_length + 4u) != size){ 1184 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1185 return; 1186 } 1187 1188 #ifdef ENABLE_CLASSIC 1189 // update idle timestamp 1190 hci_connection_timestamp(conn); 1191 #endif 1192 1193 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1194 hci_stack->host_completed_packets = 1; 1195 conn->num_packets_completed++; 1196 #endif 1197 1198 // handle different packet types 1199 switch (acl_flags & 0x03u) { 1200 1201 case 0x01: // continuation fragment 1202 1203 // sanity checks 1204 if (conn->acl_recombination_pos == 0u) { 1205 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1206 return; 1207 } 1208 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1209 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1210 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1211 conn->acl_recombination_pos = 0; 1212 return; 1213 } 1214 1215 // append fragment payload (header already stored) 1216 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1217 &packet[4], acl_length); 1218 conn->acl_recombination_pos += acl_length; 1219 1220 // forward complete L2CAP packet if complete. 1221 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1222 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1223 // reset recombination buffer 1224 conn->acl_recombination_length = 0; 1225 conn->acl_recombination_pos = 0; 1226 } 1227 break; 1228 1229 case 0x02: { // first fragment 1230 1231 // sanity check 1232 if (conn->acl_recombination_pos) { 1233 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1234 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1235 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1236 } 1237 conn->acl_recombination_pos = 0; 1238 } 1239 1240 // peek into L2CAP packet! 1241 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1242 1243 // compare fragment size to L2CAP packet size 1244 if (acl_length >= (l2cap_length + 4u)){ 1245 // forward fragment as L2CAP packet 1246 hci_emit_acl_packet(packet, acl_length + 4u); 1247 } else { 1248 1249 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1250 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1251 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1252 return; 1253 } 1254 1255 // store first fragment and tweak acl length for complete package 1256 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1257 packet, acl_length + 4u); 1258 conn->acl_recombination_pos = acl_length + 4u; 1259 conn->acl_recombination_length = l2cap_length; 1260 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1261 } 1262 break; 1263 1264 } 1265 default: 1266 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1267 return; 1268 } 1269 1270 // execute main loop 1271 hci_run(); 1272 } 1273 1274 static void hci_connection_stop_timer(hci_connection_t * conn){ 1275 btstack_run_loop_remove_timer(&conn->timeout); 1276 #ifdef ENABLE_CLASSIC 1277 btstack_run_loop_remove_timer(&conn->timeout_sco); 1278 #endif 1279 } 1280 1281 static void hci_shutdown_connection(hci_connection_t *conn){ 1282 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1283 1284 #ifdef ENABLE_CLASSIC 1285 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1286 bd_addr_type_t addr_type = conn->address_type; 1287 #endif 1288 #ifdef HAVE_SCO_TRANSPORT 1289 hci_con_handle_t con_handle = conn->con_handle; 1290 #endif 1291 #endif 1292 1293 hci_connection_stop_timer(conn); 1294 1295 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1296 btstack_memory_hci_connection_free( conn ); 1297 1298 // now it's gone 1299 hci_emit_nr_connections_changed(); 1300 1301 #ifdef ENABLE_CLASSIC 1302 #ifdef ENABLE_SCO_OVER_HCI 1303 // update SCO 1304 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1305 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1306 } 1307 #endif 1308 #ifdef HAVE_SCO_TRANSPORT 1309 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1310 hci_stack->sco_transport->close(con_handle); 1311 } 1312 #endif 1313 #endif 1314 } 1315 1316 #ifdef ENABLE_CLASSIC 1317 1318 static const uint16_t hci_acl_packet_type_sizes[] = { 1319 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1320 HCI_ACL_DH1_SIZE, 0, 0, 0, 1321 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1322 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1323 }; 1324 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1325 0, // 3 slot packets 1326 1, // 5 slot packets 1327 25, // EDR 2 mpbs 1328 26, // EDR 3 mbps 1329 39, // 3 slot EDR packts 1330 40, // 5 slot EDR packet 1331 }; 1332 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1333 0x0f00, // 3 slot packets 1334 0xf000, // 5 slot packets 1335 0x1102, // EDR 2 mpbs 1336 0x2204, // EDR 3 mbps 1337 0x0300, // 3 slot EDR packts 1338 0x3000, // 5 slot EDR packet 1339 }; 1340 1341 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1342 // enable packet types based on size 1343 uint16_t packet_types = 0; 1344 unsigned int i; 1345 for (i=0;i<16;i++){ 1346 if (hci_acl_packet_type_sizes[i] == 0) continue; 1347 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1348 packet_types |= 1 << i; 1349 } 1350 } 1351 // disable packet types due to missing local supported features 1352 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1353 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1354 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1355 if (feature_set) continue; 1356 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1357 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1358 } 1359 return packet_types; 1360 } 1361 1362 uint16_t hci_usable_acl_packet_types(void){ 1363 // flip bits for "may not be used" 1364 return hci_stack->usable_packet_types_acl ^ 0x3306; 1365 } 1366 1367 static const struct { 1368 uint8_t feature_index; 1369 uint16_t feature_packet_mask; 1370 } hci_sco_packet_type_feature_requirements[] = { 1371 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1372 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1373 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1374 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1375 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1376 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1377 { 47, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_3EV3 }, // 3-slot EDR eSCO packets 1378 }; 1379 1380 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1381 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1382 unsigned int i; 1383 // disable packet types due to missing local supported features 1384 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1385 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1386 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1387 if (feature_set) continue; 1388 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_sco_packet_type_feature_requirements[i].feature_packet_mask); 1389 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1390 } 1391 return packet_types; 1392 } 1393 1394 uint16_t hci_usable_sco_packet_types(void){ 1395 return hci_stack->usable_packet_types_sco; 1396 } 1397 1398 #endif 1399 1400 uint8_t* hci_get_outgoing_packet_buffer(void){ 1401 // hci packet buffer is >= acl data packet length 1402 return hci_stack->hci_packet_buffer; 1403 } 1404 1405 uint16_t hci_max_acl_data_packet_length(void){ 1406 return hci_stack->acl_data_packet_length; 1407 } 1408 1409 #ifdef ENABLE_CLASSIC 1410 bool hci_extended_sco_link_supported(void){ 1411 // No. 31, byte 3, bit 7 1412 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1413 } 1414 #endif 1415 1416 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1417 // No. 54, byte 6, bit 6 1418 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1419 } 1420 1421 #ifdef ENABLE_CLASSIC 1422 static int gap_ssp_supported(void){ 1423 // No. 51, byte 6, bit 3 1424 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1425 } 1426 #endif 1427 1428 static int hci_classic_supported(void){ 1429 #ifdef ENABLE_CLASSIC 1430 // No. 37, byte 4, bit 5, = No BR/EDR Support 1431 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1432 #else 1433 return 0; 1434 #endif 1435 } 1436 1437 static int hci_le_supported(void){ 1438 #ifdef ENABLE_BLE 1439 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1440 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1441 #else 1442 return 0; 1443 #endif 1444 } 1445 1446 static bool hci_command_supported(uint8_t command_index){ 1447 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1448 } 1449 1450 #ifdef ENABLE_BLE 1451 1452 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1453 static bool hci_extended_advertising_supported(void){ 1454 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1455 } 1456 #endif 1457 1458 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1459 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1460 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1461 } else { 1462 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1463 } 1464 } 1465 1466 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1467 *addr_type = hci_stack->le_own_addr_type; 1468 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1469 } 1470 1471 #ifdef ENABLE_LE_PERIPHERAL 1472 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1473 *addr_type = hci_stack->le_advertisements_own_addr_type; 1474 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1475 }; 1476 #endif 1477 1478 #ifdef ENABLE_LE_CENTRAL 1479 1480 /** 1481 * @brief Get own addr type and address used for LE connections (Central) 1482 */ 1483 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1484 *addr_type = hci_stack->le_connection_own_addr_type; 1485 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1486 } 1487 1488 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1489 1490 uint16_t offset = 3; 1491 uint8_t num_reports = packet[offset]; 1492 offset += 1; 1493 1494 uint16_t i; 1495 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1496 for (i=0; (i<num_reports) && (offset < size);i++){ 1497 // sanity checks on data_length: 1498 uint8_t data_length = packet[offset + 8]; 1499 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1500 if ((offset + 9u + data_length + 1u) > size) return; 1501 // setup event 1502 uint8_t event_size = 10u + data_length; 1503 uint16_t pos = 0; 1504 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1505 event[pos++] = event_size; 1506 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1507 offset += 8; 1508 pos += 8; 1509 event[pos++] = packet[offset + 1 + data_length]; // rssi 1510 event[pos++] = data_length; 1511 offset++; 1512 (void)memcpy(&event[pos], &packet[offset], data_length); 1513 pos += data_length; 1514 offset += data_length + 1u; // rssi 1515 hci_emit_event(event, pos, 1); 1516 } 1517 } 1518 1519 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1520 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1521 uint16_t offset = 3; 1522 uint8_t num_reports = packet[offset++]; 1523 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1524 uint8_t i; 1525 for (i=0; (i<num_reports) && (offset < size);i++){ 1526 // sanity checks on data_length: 1527 uint16_t data_length = packet[offset + 23]; 1528 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1529 if ((offset + 24u + data_length) > size) return; 1530 uint16_t event_type = little_endian_read_16(packet, offset); 1531 offset += 2; 1532 if ((event_type & 0x10) != 0) { 1533 // setup legacy event 1534 uint8_t legacy_event_type; 1535 switch (event_type){ 1536 case 0b0010011: 1537 // ADV_IND 1538 legacy_event_type = 0; 1539 break; 1540 case 0b0010101: 1541 // ADV_DIRECT_IND 1542 legacy_event_type = 1; 1543 break; 1544 case 0b0010010: 1545 // ADV_SCAN_IND 1546 legacy_event_type = 2; 1547 break; 1548 case 0b0010000: 1549 // ADV_NONCONN_IND 1550 legacy_event_type = 3; 1551 break; 1552 case 0b0011011: 1553 case 0b0011010: 1554 // SCAN_RSP 1555 legacy_event_type = 4; 1556 break; 1557 default: 1558 legacy_event_type = 0; 1559 break; 1560 } 1561 uint16_t pos = 0; 1562 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1563 event[pos++] = 10u + data_length; 1564 event[pos++] = legacy_event_type; 1565 // copy address type + address 1566 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1567 offset += 7; 1568 pos += 7; 1569 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1570 offset += 4; 1571 // copy rssi 1572 event[pos++] = packet[offset++]; 1573 // skip periodic advertising interval and direct address 1574 offset += 9; 1575 // copy data len + data; 1576 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1577 pos += 1 +data_length; 1578 offset += 1+ data_length; 1579 hci_emit_event(event, pos, 1); 1580 } else { 1581 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1582 uint8_t report_len = 24 + data_length; 1583 event[1] = report_len; 1584 little_endian_store_16(event, 2, event_type); 1585 memcpy(&event[4], &packet[offset], report_len); 1586 offset += report_len; 1587 hci_emit_event(event, 2 + report_len, 1); 1588 } 1589 } 1590 } 1591 #endif 1592 1593 #endif 1594 #endif 1595 1596 #ifdef ENABLE_BLE 1597 #ifdef ENABLE_LE_PERIPHERAL 1598 static void hci_update_advertisements_enabled_for_current_roles(void){ 1599 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1600 // get number of active le slave connections 1601 int num_slave_connections = 0; 1602 btstack_linked_list_iterator_t it; 1603 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1604 while (btstack_linked_list_iterator_has_next(&it)){ 1605 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1606 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1607 if (con->state != OPEN) continue; 1608 if (con->role != HCI_ROLE_SLAVE) continue; 1609 if (!hci_is_le_connection(con)) continue; 1610 num_slave_connections++; 1611 } 1612 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1613 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1614 } else { 1615 hci_stack->le_advertisements_enabled_for_current_roles = false; 1616 } 1617 } 1618 #endif 1619 #endif 1620 1621 #ifdef ENABLE_CLASSIC 1622 static void gap_run_set_local_name(void){ 1623 hci_reserve_packet_buffer(); 1624 uint8_t * packet = hci_stack->hci_packet_buffer; 1625 // construct HCI Command and send 1626 uint16_t opcode = hci_write_local_name.opcode; 1627 hci_stack->last_cmd_opcode = opcode; 1628 packet[0] = opcode & 0xff; 1629 packet[1] = opcode >> 8; 1630 packet[2] = DEVICE_NAME_LEN; 1631 memset(&packet[3], 0, DEVICE_NAME_LEN); 1632 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1633 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1634 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1635 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1636 // expand '00:00:00:00:00:00' in name with bd_addr 1637 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1638 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1639 } 1640 1641 static void gap_run_set_eir_data(void){ 1642 hci_reserve_packet_buffer(); 1643 uint8_t * packet = hci_stack->hci_packet_buffer; 1644 // construct HCI Command in-place and send 1645 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1646 hci_stack->last_cmd_opcode = opcode; 1647 uint16_t offset = 0; 1648 packet[offset++] = opcode & 0xff; 1649 packet[offset++] = opcode >> 8; 1650 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1651 packet[offset++] = 0; // FEC not required 1652 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1653 if (hci_stack->eir_data){ 1654 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1655 ad_context_t context; 1656 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1657 uint8_t data_type = ad_iterator_get_data_type(&context); 1658 uint8_t size = ad_iterator_get_data_len(&context); 1659 const uint8_t *data = ad_iterator_get_data(&context); 1660 // copy item 1661 packet[offset++] = size + 1; 1662 packet[offset++] = data_type; 1663 memcpy(&packet[offset], data, size); 1664 // update name item 1665 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1666 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1667 } 1668 offset += size; 1669 } 1670 } else { 1671 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1672 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1673 packet[offset++] = bytes_to_copy + 1; 1674 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1675 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1676 // expand '00:00:00:00:00:00' in name with bd_addr 1677 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1678 } 1679 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1680 } 1681 1682 static void hci_run_gap_tasks_classic(void){ 1683 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1684 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1685 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1686 return; 1687 } 1688 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1689 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1690 gap_run_set_local_name(); 1691 return; 1692 } 1693 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1694 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1695 gap_run_set_eir_data(); 1696 return; 1697 } 1698 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1699 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1700 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1701 return; 1702 } 1703 // write page scan activity 1704 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1705 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1706 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1707 return; 1708 } 1709 // write page scan type 1710 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1711 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1712 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1713 return; 1714 } 1715 // write page timeout 1716 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1717 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1718 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1719 return; 1720 } 1721 // send scan enable 1722 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1723 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1724 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1725 return; 1726 } 1727 // send write scan activity 1728 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1729 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1730 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1731 return; 1732 } 1733 } 1734 #endif 1735 1736 #ifndef HAVE_HOST_CONTROLLER_API 1737 1738 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1739 if (!hci_stack->config) return 0; 1740 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1741 // Limit baud rate for Broadcom chipsets to 3 mbps 1742 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1743 baud_rate = 3000000; 1744 } 1745 return baud_rate; 1746 } 1747 1748 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1749 UNUSED(ds); 1750 1751 switch (hci_stack->substate){ 1752 case HCI_INIT_W4_SEND_RESET: 1753 log_info("Resend HCI Reset"); 1754 hci_stack->substate = HCI_INIT_SEND_RESET; 1755 hci_stack->num_cmd_packets = 1; 1756 hci_run(); 1757 break; 1758 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1759 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1760 if (hci_stack->hci_transport->reset_link){ 1761 hci_stack->hci_transport->reset_link(); 1762 } 1763 1764 /* fall through */ 1765 1766 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1767 log_info("Resend HCI Reset - CSR Warm Boot"); 1768 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1769 hci_stack->num_cmd_packets = 1; 1770 hci_run(); 1771 break; 1772 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1773 if (hci_stack->hci_transport->set_baudrate){ 1774 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1775 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1776 hci_stack->hci_transport->set_baudrate(baud_rate); 1777 } 1778 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1779 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1780 if (hci_stack->hci_transport->reset_link){ 1781 log_info("Link Reset"); 1782 hci_stack->hci_transport->reset_link(); 1783 } 1784 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1785 hci_run(); 1786 } 1787 break; 1788 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1789 // otherwise continue 1790 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1791 hci_send_cmd(&hci_read_local_supported_commands); 1792 break; 1793 default: 1794 break; 1795 } 1796 } 1797 #endif 1798 1799 static void hci_initializing_next_state(void){ 1800 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1801 } 1802 1803 static void hci_init_done(void){ 1804 // done. tell the app 1805 log_info("hci_init_done -> HCI_STATE_WORKING"); 1806 hci_stack->state = HCI_STATE_WORKING; 1807 hci_emit_state(); 1808 } 1809 1810 // assumption: hci_can_send_command_packet_now() == true 1811 static void hci_initializing_run(void){ 1812 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1813 1814 if (!hci_can_send_command_packet_now()) return; 1815 1816 #ifndef HAVE_HOST_CONTROLLER_API 1817 bool need_baud_change = hci_stack->config 1818 && hci_stack->chipset 1819 && hci_stack->chipset->set_baudrate_command 1820 && hci_stack->hci_transport->set_baudrate 1821 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1822 #endif 1823 1824 switch (hci_stack->substate){ 1825 case HCI_INIT_SEND_RESET: 1826 hci_state_reset(); 1827 1828 #ifndef HAVE_HOST_CONTROLLER_API 1829 // prepare reset if command complete not received in 100ms 1830 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1831 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1832 btstack_run_loop_add_timer(&hci_stack->timeout); 1833 #endif 1834 // send command 1835 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1836 hci_send_cmd(&hci_reset); 1837 break; 1838 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1839 hci_send_cmd(&hci_read_local_version_information); 1840 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1841 break; 1842 1843 #ifndef HAVE_HOST_CONTROLLER_API 1844 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1845 hci_state_reset(); 1846 // prepare reset if command complete not received in 100ms 1847 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1848 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1849 btstack_run_loop_add_timer(&hci_stack->timeout); 1850 // send command 1851 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1852 hci_send_cmd(&hci_reset); 1853 break; 1854 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1855 hci_state_reset(); 1856 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1857 hci_send_cmd(&hci_reset); 1858 break; 1859 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1860 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1861 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1862 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1863 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1864 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1865 break; 1866 } 1867 case HCI_INIT_SET_BD_ADDR: 1868 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1869 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1870 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1871 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1872 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1873 break; 1874 case HCI_INIT_SEND_READ_LOCAL_NAME: 1875 #ifdef ENABLE_CLASSIC 1876 hci_send_cmd(&hci_read_local_name); 1877 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1878 break; 1879 #endif 1880 /* fall through */ 1881 1882 case HCI_INIT_SEND_BAUD_CHANGE: 1883 if (need_baud_change) { 1884 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1885 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1886 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1887 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1888 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1889 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1890 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1891 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1892 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1893 btstack_run_loop_add_timer(&hci_stack->timeout); 1894 } 1895 break; 1896 } 1897 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1898 1899 /* fall through */ 1900 1901 case HCI_INIT_CUSTOM_INIT: 1902 case HCI_INIT_CUSTOM_PRE_INIT: 1903 // Custom initialization 1904 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1905 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1906 bool send_cmd = false; 1907 switch (hci_stack->chipset_result){ 1908 case BTSTACK_CHIPSET_VALID_COMMAND: 1909 send_cmd = true; 1910 switch (hci_stack->substate){ 1911 case HCI_INIT_CUSTOM_INIT: 1912 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1913 break; 1914 case HCI_INIT_CUSTOM_PRE_INIT: 1915 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1916 break; 1917 default: 1918 btstack_assert(false); 1919 break; 1920 } 1921 break; 1922 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1923 send_cmd = true; 1924 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1925 log_info("CSR Warm Boot"); 1926 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1927 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1928 btstack_run_loop_add_timer(&hci_stack->timeout); 1929 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1930 && hci_stack->config 1931 && hci_stack->chipset 1932 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1933 && hci_stack->hci_transport->set_baudrate 1934 && hci_transport_uart_get_main_baud_rate()){ 1935 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1936 } else { 1937 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1938 } 1939 break; 1940 default: 1941 break; 1942 } 1943 1944 if (send_cmd){ 1945 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1946 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1947 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1948 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1949 break; 1950 } 1951 log_info("Init script done"); 1952 1953 // Custom Pre-Init complete, start regular init with HCI Reset 1954 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 1955 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1956 hci_send_cmd(&hci_reset); 1957 break; 1958 } 1959 1960 // Init script download on Broadcom chipsets causes: 1961 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1962 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1963 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1964 1965 // - baud rate to reset, restore UART baud rate if needed 1966 if (need_baud_change) { 1967 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1968 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1969 hci_stack->hci_transport->set_baudrate(baud_rate); 1970 } 1971 1972 uint16_t bcm_delay_ms = 300; 1973 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1974 // -> Work around: wait here. 1975 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1976 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1977 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1978 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1979 btstack_run_loop_add_timer(&hci_stack->timeout); 1980 break; 1981 } 1982 } 1983 #endif 1984 /* fall through */ 1985 1986 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1987 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1988 hci_send_cmd(&hci_read_local_supported_commands); 1989 break; 1990 case HCI_INIT_READ_BD_ADDR: 1991 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1992 hci_send_cmd(&hci_read_bd_addr); 1993 break; 1994 case HCI_INIT_READ_BUFFER_SIZE: 1995 // only read buffer size if supported 1996 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1997 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1998 hci_send_cmd(&hci_read_buffer_size); 1999 break; 2000 } 2001 2002 /* fall through */ 2003 2004 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2005 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2006 hci_send_cmd(&hci_read_local_supported_features); 2007 break; 2008 2009 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2010 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2011 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2012 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2013 break; 2014 case HCI_INIT_HOST_BUFFER_SIZE: 2015 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2016 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2017 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2018 break; 2019 #endif 2020 2021 case HCI_INIT_SET_EVENT_MASK: 2022 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2023 if (hci_le_supported()){ 2024 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2025 } else { 2026 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2027 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2028 } 2029 break; 2030 2031 case HCI_INIT_SET_EVENT_MASK_2: 2032 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2033 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2034 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2035 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2036 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2037 // Encryption Change Event v2 - bit 25 2038 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2039 break; 2040 } 2041 2042 #ifdef ENABLE_CLASSIC 2043 /* fall through */ 2044 2045 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2046 if (hci_classic_supported() && gap_ssp_supported()){ 2047 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2048 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2049 break; 2050 } 2051 2052 /* fall through */ 2053 2054 case HCI_INIT_WRITE_INQUIRY_MODE: 2055 if (hci_classic_supported()){ 2056 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2057 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2058 break; 2059 } 2060 2061 /* fall through */ 2062 2063 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2064 // skip write secure connections host support if not supported or disabled 2065 if (hci_classic_supported() && hci_stack->secure_connections_enable 2066 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2067 hci_stack->secure_connections_active = true; 2068 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2069 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2070 break; 2071 } 2072 2073 /* fall through */ 2074 2075 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2076 // skip set min encryption key size 2077 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2078 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2079 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2080 break; 2081 } 2082 2083 #ifdef ENABLE_SCO_OVER_HCI 2084 /* fall through */ 2085 2086 // only sent if ENABLE_SCO_OVER_HCI is defined 2087 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2088 // skip write synchronous flow control if not supported 2089 if (hci_classic_supported() 2090 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2091 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2092 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2093 break; 2094 } 2095 /* fall through */ 2096 2097 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2098 // skip write default erroneous data reporting if not supported 2099 if (hci_classic_supported() 2100 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2101 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2102 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2103 break; 2104 } 2105 #endif 2106 2107 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2108 /* fall through */ 2109 2110 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2111 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2112 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2113 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2114 #ifdef ENABLE_SCO_OVER_HCI 2115 log_info("BCM: Route SCO data via HCI transport"); 2116 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2117 #endif 2118 #ifdef ENABLE_SCO_OVER_PCM 2119 log_info("BCM: Route SCO data via PCM interface"); 2120 #ifdef ENABLE_BCM_PCM_WBS 2121 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2122 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2123 #else 2124 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2125 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2126 #endif 2127 #endif 2128 break; 2129 } 2130 #endif 2131 2132 #ifdef ENABLE_SCO_OVER_PCM 2133 /* fall through */ 2134 2135 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2136 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2137 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2138 log_info("BCM: Config PCM interface for I2S"); 2139 #ifdef ENABLE_BCM_PCM_WBS 2140 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2141 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2142 #else 2143 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2144 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2145 #endif 2146 break; 2147 } 2148 #endif 2149 #endif 2150 2151 #ifdef ENABLE_BLE 2152 /* fall through */ 2153 2154 // LE INIT 2155 case HCI_INIT_LE_READ_BUFFER_SIZE: 2156 if (hci_le_supported()){ 2157 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2158 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2159 hci_send_cmd(&hci_le_read_buffer_size_v2); 2160 } else { 2161 hci_send_cmd(&hci_le_read_buffer_size); 2162 } 2163 break; 2164 } 2165 2166 /* fall through */ 2167 2168 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2169 // skip write le host if not supported (e.g. on LE only EM9301) 2170 if (hci_le_supported() 2171 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2172 // LE Supported Host = 1, Simultaneous Host = 0 2173 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2174 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2175 break; 2176 } 2177 2178 /* fall through */ 2179 2180 case HCI_INIT_LE_SET_EVENT_MASK: 2181 if (hci_le_supported()){ 2182 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2183 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2184 break; 2185 } 2186 #endif 2187 2188 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2189 /* fall through */ 2190 2191 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2192 if (hci_le_supported() 2193 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2194 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2195 hci_send_cmd(&hci_le_read_maximum_data_length); 2196 break; 2197 } 2198 2199 /* fall through */ 2200 2201 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2202 if (hci_le_supported() 2203 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2204 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2205 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2206 break; 2207 } 2208 #endif 2209 2210 #ifdef ENABLE_LE_CENTRAL 2211 /* fall through */ 2212 2213 case HCI_INIT_READ_WHITE_LIST_SIZE: 2214 if (hci_le_supported()){ 2215 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2216 hci_send_cmd(&hci_le_read_white_list_size); 2217 break; 2218 } 2219 2220 #endif 2221 2222 #ifdef ENABLE_LE_PERIPHERAL 2223 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2224 /* fall through */ 2225 2226 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2227 if (hci_extended_advertising_supported()){ 2228 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2229 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2230 break; 2231 } 2232 #endif 2233 #endif 2234 /* fall through */ 2235 2236 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2237 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2238 if (hci_le_supported()) { 2239 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2240 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2241 break; 2242 } 2243 #endif 2244 2245 /* fall through */ 2246 2247 case HCI_INIT_DONE: 2248 hci_stack->substate = HCI_INIT_DONE; 2249 // main init sequence complete 2250 #ifdef ENABLE_CLASSIC 2251 // check if initial Classic GAP Tasks are completed 2252 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2253 hci_run_gap_tasks_classic(); 2254 break; 2255 } 2256 #endif 2257 #ifdef ENABLE_BLE 2258 #ifdef ENABLE_LE_CENTRAL 2259 // check if initial LE GAP Tasks are completed 2260 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2261 hci_run_general_gap_le(); 2262 break; 2263 } 2264 #endif 2265 #endif 2266 hci_init_done(); 2267 break; 2268 2269 default: 2270 return; 2271 } 2272 } 2273 2274 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2275 bool command_completed = false; 2276 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2277 uint16_t opcode = little_endian_read_16(packet,3); 2278 if (opcode == hci_stack->last_cmd_opcode){ 2279 command_completed = true; 2280 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2281 } else { 2282 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2283 } 2284 } 2285 2286 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2287 uint8_t status = packet[2]; 2288 uint16_t opcode = little_endian_read_16(packet,4); 2289 if (opcode == hci_stack->last_cmd_opcode){ 2290 if (status){ 2291 command_completed = true; 2292 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2293 } else { 2294 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2295 } 2296 } else { 2297 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2298 } 2299 } 2300 #ifndef HAVE_HOST_CONTROLLER_API 2301 // Vendor == CSR 2302 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2303 // TODO: track actual command 2304 command_completed = true; 2305 } 2306 2307 // Vendor == Toshiba 2308 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2309 // TODO: track actual command 2310 command_completed = true; 2311 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2312 hci_stack->num_cmd_packets = 1; 2313 } 2314 #endif 2315 2316 return command_completed; 2317 } 2318 2319 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2320 2321 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2322 2323 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2324 2325 #ifndef HAVE_HOST_CONTROLLER_API 2326 2327 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2328 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2329 // 2330 // HCI Reset 2331 // Timeout 100 ms 2332 // HCI Reset 2333 // Command Complete Reset 2334 // HCI Read Local Version Information 2335 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2336 // hang... 2337 // 2338 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2339 if (!command_completed 2340 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2341 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2342 2343 uint16_t opcode = little_endian_read_16(packet,3); 2344 if (opcode == hci_reset.opcode){ 2345 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2346 return; 2347 } 2348 } 2349 2350 // CSR & H5 2351 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2352 if (!command_completed 2353 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2354 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2355 2356 uint16_t opcode = little_endian_read_16(packet,3); 2357 if (opcode == hci_reset.opcode){ 2358 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2359 return; 2360 } 2361 } 2362 2363 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2364 // fix: Correct substate and behave as command below 2365 if (command_completed){ 2366 switch (hci_stack->substate){ 2367 case HCI_INIT_SEND_RESET: 2368 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2369 break; 2370 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2371 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2372 break; 2373 default: 2374 break; 2375 } 2376 } 2377 2378 #endif 2379 2380 if (!command_completed) return; 2381 2382 bool need_baud_change = false; 2383 bool need_addr_change = false; 2384 2385 #ifndef HAVE_HOST_CONTROLLER_API 2386 need_baud_change = hci_stack->config 2387 && hci_stack->chipset 2388 && hci_stack->chipset->set_baudrate_command 2389 && hci_stack->hci_transport->set_baudrate 2390 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2391 2392 need_addr_change = hci_stack->custom_bd_addr_set 2393 && hci_stack->chipset 2394 && hci_stack->chipset->set_bd_addr_command; 2395 #endif 2396 2397 switch(hci_stack->substate){ 2398 2399 #ifndef HAVE_HOST_CONTROLLER_API 2400 case HCI_INIT_SEND_RESET: 2401 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2402 // fix: just correct substate and behave as command below 2403 2404 /* fall through */ 2405 #endif 2406 2407 case HCI_INIT_W4_SEND_RESET: 2408 btstack_run_loop_remove_timer(&hci_stack->timeout); 2409 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2410 return; 2411 2412 #ifndef HAVE_HOST_CONTROLLER_API 2413 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2414 // for STLC2500D, baud rate change already happened. 2415 // for others, baud rate gets changed now 2416 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2417 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2418 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2419 hci_stack->hci_transport->set_baudrate(baud_rate); 2420 } 2421 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2422 return; 2423 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2424 btstack_run_loop_remove_timer(&hci_stack->timeout); 2425 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2426 return; 2427 case HCI_INIT_W4_CUSTOM_INIT: 2428 // repeat custom init 2429 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2430 return; 2431 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2432 // repeat custom init 2433 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2434 return; 2435 #endif 2436 2437 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2438 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2439 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2440 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2441 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2442 return; 2443 } 2444 if (need_addr_change){ 2445 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2446 return; 2447 } 2448 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2449 return; 2450 #ifndef HAVE_HOST_CONTROLLER_API 2451 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2452 if (need_baud_change){ 2453 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2454 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2455 hci_stack->hci_transport->set_baudrate(baud_rate); 2456 } 2457 if (need_addr_change){ 2458 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2459 return; 2460 } 2461 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2462 return; 2463 case HCI_INIT_W4_SET_BD_ADDR: 2464 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2465 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2466 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2467 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2468 return; 2469 } 2470 // skipping st warm boot 2471 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2472 return; 2473 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2474 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2475 return; 2476 #endif 2477 2478 case HCI_INIT_DONE: 2479 // set state if we came here by fall through 2480 hci_stack->substate = HCI_INIT_DONE; 2481 return; 2482 2483 default: 2484 break; 2485 } 2486 hci_initializing_next_state(); 2487 } 2488 2489 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2490 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2491 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2492 // check if we have been aware of the HCI connection 2493 switch (conn->state){ 2494 case SENT_CREATE_CONNECTION: 2495 case RECEIVED_CONNECTION_REQUEST: 2496 case ACCEPTED_CONNECTION_REQUEST: 2497 break; 2498 default: 2499 return; 2500 } 2501 2502 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2503 bd_addr_t bd_address; 2504 (void)memcpy(&bd_address, conn->address, 6); 2505 2506 #ifdef ENABLE_CLASSIC 2507 // cache needed data 2508 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2509 #endif 2510 2511 // connection failed, remove entry 2512 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2513 btstack_memory_hci_connection_free( conn ); 2514 2515 #ifdef ENABLE_CLASSIC 2516 // notify client if dedicated bonding 2517 if (notify_dedicated_bonding_failed){ 2518 log_info("hci notify_dedicated_bonding_failed"); 2519 hci_emit_dedicated_bonding_result(bd_address, status); 2520 } 2521 2522 // if authentication error, also delete link key 2523 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2524 gap_drop_link_key_for_bd_addr(bd_address); 2525 } 2526 #else 2527 UNUSED(status); 2528 #endif 2529 } 2530 2531 #ifdef ENABLE_CLASSIC 2532 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2533 // SSP Controller 2534 if (features[6] & (1 << 3)){ 2535 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2536 } 2537 // eSCO 2538 if (features[3] & (1<<7)){ 2539 conn->remote_supported_features[0] |= 1; 2540 } 2541 // Extended features 2542 if (features[7] & (1<<7)){ 2543 conn->remote_supported_features[0] |= 2; 2544 } 2545 } 2546 2547 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2548 // SSP Host 2549 if (features[0] & (1 << 0)){ 2550 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2551 } 2552 // SC Host 2553 if (features[0] & (1 << 3)){ 2554 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2555 } 2556 } 2557 2558 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2559 // SC Controller 2560 if (features[1] & (1 << 0)){ 2561 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2562 } 2563 } 2564 2565 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2566 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2567 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2568 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2569 if (conn->bonding_flags & BONDING_DEDICATED){ 2570 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2571 } 2572 } 2573 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2574 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2575 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2576 } 2577 2578 #endif 2579 2580 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2581 // handle BT initialization 2582 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2583 hci_initializing_event_handler(packet, size); 2584 } 2585 2586 // help with BT sleep 2587 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2588 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2589 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2590 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2591 hci_initializing_next_state(); 2592 } 2593 } 2594 2595 #ifdef ENABLE_CLASSIC 2596 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2597 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2598 conn->requested_security_level = LEVEL_0; 2599 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2600 hci_emit_security_level(conn->con_handle, security_level); 2601 2602 // dedicated bonding 2603 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2604 conn->bonding_flags &= ~BONDING_DEDICATED; 2605 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2606 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2607 // emit dedicated bonding complete, don't disconnect 2608 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2609 #else 2610 // request disconnect, event is emitted after disconnect 2611 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2612 #endif 2613 } 2614 } 2615 2616 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2617 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2618 conn->encryption_key_size = encryption_key_size; 2619 2620 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2621 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2622 hci_handle_mutual_authentication_completed(conn); 2623 } else { 2624 // otherwise trigger remote feature request and send authentication request 2625 hci_trigger_remote_features_for_connection(conn); 2626 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2627 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2628 } 2629 } 2630 } 2631 #endif 2632 2633 static void hci_store_local_supported_commands(const uint8_t * packet){ 2634 // create mapping table 2635 #define X(name, offset, bit) { offset, bit }, 2636 static struct { 2637 uint8_t byte_offset; 2638 uint8_t bit_position; 2639 } supported_hci_commands_map [] = { 2640 SUPPORTED_HCI_COMMANDS 2641 }; 2642 #undef X 2643 2644 // create names for debug purposes 2645 #ifdef ENABLE_LOG_DEBUG 2646 #define X(name, offset, bit) #name, 2647 static const char * command_names[] = { 2648 SUPPORTED_HCI_COMMANDS 2649 }; 2650 #undef X 2651 #endif 2652 2653 hci_stack->local_supported_commands = 0; 2654 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2655 uint16_t i; 2656 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2657 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2658 #ifdef ENABLE_LOG_DEBUG 2659 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); 2660 #else 2661 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2662 #endif 2663 hci_stack->local_supported_commands |= (1LU << i); 2664 } 2665 } 2666 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2667 } 2668 2669 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2670 UNUSED(size); 2671 2672 uint16_t manufacturer; 2673 #ifdef ENABLE_CLASSIC 2674 hci_con_handle_t handle; 2675 hci_connection_t * conn; 2676 #endif 2677 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2678 uint8_t status; 2679 #endif 2680 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2681 le_audio_cig_t * cig; 2682 #endif 2683 2684 // get num cmd packets - limit to 1 to reduce complexity 2685 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2686 2687 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2688 switch (opcode){ 2689 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2690 if (packet[5]) break; 2691 // terminate, name 248 chars 2692 packet[6+248] = 0; 2693 log_info("local name: %s", &packet[6]); 2694 break; 2695 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2696 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2697 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2698 uint16_t acl_len = little_endian_read_16(packet, 6); 2699 uint16_t sco_len = packet[8]; 2700 2701 // determine usable ACL/SCO payload size 2702 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2703 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2704 2705 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2706 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2707 2708 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2709 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2710 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2711 } 2712 break; 2713 case HCI_OPCODE_HCI_READ_RSSI: 2714 if (packet[5] == ERROR_CODE_SUCCESS){ 2715 uint8_t event[5]; 2716 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2717 event[1] = 3; 2718 (void)memcpy(&event[2], &packet[6], 3); 2719 hci_emit_event(event, sizeof(event), 1); 2720 } 2721 break; 2722 #ifdef ENABLE_BLE 2723 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2724 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2725 hci_stack->le_iso_packets_total_num = packet[11]; 2726 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2727 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2728 2729 /* fall through */ 2730 2731 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2732 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2733 hci_stack->le_acl_packets_total_num = packet[8]; 2734 // determine usable ACL payload size 2735 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2736 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2737 } 2738 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); 2739 break; 2740 #endif 2741 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2742 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2743 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2744 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2745 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); 2746 break; 2747 #endif 2748 #ifdef ENABLE_LE_CENTRAL 2749 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2750 hci_stack->le_whitelist_capacity = packet[6]; 2751 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2752 break; 2753 #endif 2754 #ifdef ENABLE_LE_PERIPHERAL 2755 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2756 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2757 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2758 break; 2759 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2760 if (hci_stack->le_advertising_set_in_current_command != 0) { 2761 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2762 hci_stack->le_advertising_set_in_current_command = 0; 2763 if (advertising_set == NULL) break; 2764 uint8_t adv_status = packet[6]; 2765 uint8_t tx_power = packet[7]; 2766 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 }; 2767 if (adv_status == 0){ 2768 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2769 } 2770 hci_emit_event(event, sizeof(event), 1); 2771 } 2772 break; 2773 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2774 if (hci_stack->le_advertising_set_in_current_command != 0) { 2775 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2776 hci_stack->le_advertising_set_in_current_command = 0; 2777 if (advertising_set == NULL) break; 2778 uint8_t adv_status = packet[5]; 2779 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2780 if (adv_status == 0){ 2781 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2782 } 2783 hci_emit_event(event, sizeof(event), 1); 2784 } 2785 break; 2786 #endif 2787 #endif 2788 case HCI_OPCODE_HCI_READ_BD_ADDR: 2789 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2790 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)); 2791 #ifdef ENABLE_CLASSIC 2792 if (hci_stack->link_key_db){ 2793 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2794 } 2795 #endif 2796 break; 2797 #ifdef ENABLE_CLASSIC 2798 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2799 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2800 break; 2801 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2802 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2803 if (status == ERROR_CODE_SUCCESS) { 2804 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2805 } else { 2806 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2807 } 2808 break; 2809 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2810 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2811 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2812 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2813 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2814 hci_emit_event(event, sizeof(event), 1); 2815 } 2816 break; 2817 #endif 2818 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2819 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2820 2821 #ifdef ENABLE_CLASSIC 2822 // determine usable ACL packet types based on host buffer size and supported features 2823 hci_stack->usable_packet_types_acl = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2824 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2825 // determine usable SCO packet types based on supported features 2826 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2827 &hci_stack->local_supported_features[0]); 2828 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2829 #endif 2830 // Classic/LE 2831 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2832 break; 2833 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2834 manufacturer = little_endian_read_16(packet, 10); 2835 // map Cypress & Infineon to Broadcom 2836 switch (manufacturer){ 2837 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2838 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2839 log_info("Treat Cypress/Infineon as Broadcom"); 2840 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2841 little_endian_store_16(packet, 10, manufacturer); 2842 break; 2843 default: 2844 break; 2845 } 2846 hci_stack->manufacturer = manufacturer; 2847 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2848 break; 2849 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2850 hci_store_local_supported_commands(packet); 2851 break; 2852 #ifdef ENABLE_CLASSIC 2853 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2854 if (packet[5]) return; 2855 hci_stack->synchronous_flow_control_enabled = 1; 2856 break; 2857 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2858 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2859 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2860 conn = hci_connection_for_handle(handle); 2861 if (conn != NULL) { 2862 uint8_t key_size = 0; 2863 if (status == 0){ 2864 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2865 log_info("Handle %04x key Size: %u", handle, key_size); 2866 } else { 2867 key_size = 1; 2868 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2869 } 2870 hci_handle_read_encryption_key_size_complete(conn, key_size); 2871 } 2872 break; 2873 // assert pairing complete event is emitted. 2874 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2875 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2876 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2877 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2878 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2879 // lookup connection by gap pairing addr 2880 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2881 if (conn == NULL) break; 2882 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2883 break; 2884 2885 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2886 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2887 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2888 uint8_t event[67]; 2889 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2890 event[1] = 65; 2891 (void)memset(&event[2], 0, 65); 2892 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2893 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2894 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2895 event[2] = 3; 2896 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2897 } else { 2898 event[2] = 1; 2899 } 2900 } 2901 hci_emit_event(event, sizeof(event), 0); 2902 break; 2903 } 2904 2905 // note: only needed if user does not provide OOB data 2906 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2907 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2908 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2909 if (conn == NULL) break; 2910 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2911 break; 2912 #endif 2913 #endif 2914 #ifdef ENABLE_BLE 2915 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2916 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2917 // lookup CIG 2918 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2919 if (cig != NULL){ 2920 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2921 uint8_t i = 0; 2922 if (status == ERROR_CODE_SUCCESS){ 2923 // assign CIS handles to pre-allocated CIS 2924 btstack_linked_list_iterator_t it; 2925 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2926 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2927 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2928 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2929 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2930 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2931 iso_stream->cis_handle = cis_handle; 2932 cig->cis_con_handles[i] = cis_handle; 2933 i++; 2934 } 2935 } 2936 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2937 hci_emit_cig_created(cig, status); 2938 } else { 2939 hci_emit_cig_created(cig, status); 2940 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2941 } 2942 } 2943 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2944 break; 2945 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2946 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2947 if (status != ERROR_CODE_SUCCESS){ 2948 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2949 } 2950 break; 2951 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2952 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2953 if (status != ERROR_CODE_SUCCESS){ 2954 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2955 } 2956 break; 2957 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2958 // lookup BIG by state 2959 btstack_linked_list_iterator_t it; 2960 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2961 while (btstack_linked_list_iterator_has_next(&it)) { 2962 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2963 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2964 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2965 if (status == ERROR_CODE_SUCCESS){ 2966 big->state_vars.next_bis++; 2967 if (big->state_vars.next_bis == big->num_bis){ 2968 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2969 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2970 } else { 2971 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2972 } 2973 } else { 2974 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2975 big->state_vars.status = status; 2976 } 2977 return; 2978 } 2979 } 2980 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2981 while (btstack_linked_list_iterator_has_next(&it)) { 2982 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2983 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2984 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2985 if (status == ERROR_CODE_SUCCESS){ 2986 big_sync->state_vars.next_bis++; 2987 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2988 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2989 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2990 } else { 2991 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2992 } 2993 } else { 2994 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2995 big_sync->state_vars.status = status; 2996 } 2997 return; 2998 } 2999 } 3000 // Lookup CIS via active group operation 3001 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3002 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3003 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3004 3005 // lookup CIS by state 3006 btstack_linked_list_iterator_t it; 3007 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3008 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 3009 while (btstack_linked_list_iterator_has_next(&it)){ 3010 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3011 handle = iso_stream->cis_handle; 3012 bool emit_cis_created = false; 3013 switch (iso_stream->state){ 3014 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3015 if (status != ERROR_CODE_SUCCESS){ 3016 emit_cis_created = true; 3017 break; 3018 } 3019 if (iso_stream->max_sdu_c_to_p > 0){ 3020 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 3021 } else { 3022 emit_cis_created = true; 3023 } 3024 break; 3025 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3026 emit_cis_created = true; 3027 break; 3028 default: 3029 break; 3030 } 3031 if (emit_cis_created){ 3032 hci_cis_handle_created(iso_stream, status); 3033 } 3034 } 3035 } else { 3036 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3037 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3038 if (cig != NULL) { 3039 // emit cis created if all ISO Paths have been created 3040 // assume we are central 3041 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3042 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3043 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3044 // if outgoing has been setup, or incoming was setup but outgoing not required 3045 if ((cis_direction == 1) || (outgoing_needed == false)){ 3046 // lookup iso stream by cig/cis 3047 while (btstack_linked_list_iterator_has_next(&it)) { 3048 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3049 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3050 hci_cis_handle_created(iso_stream, status); 3051 } 3052 } 3053 } 3054 // next state 3055 cig->state_vars.next_cis++; 3056 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3057 } 3058 } 3059 } 3060 break; 3061 } 3062 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3063 // lookup BIG by state 3064 btstack_linked_list_iterator_t it; 3065 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3066 while (btstack_linked_list_iterator_has_next(&it)) { 3067 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3068 uint8_t big_handle = big_sync->big_handle; 3069 switch (big_sync->state){ 3070 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3071 btstack_linked_list_iterator_remove(&it); 3072 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3073 return; 3074 default: 3075 btstack_linked_list_iterator_remove(&it); 3076 hci_emit_big_sync_stopped(big_handle); 3077 return; 3078 } 3079 } 3080 break; 3081 } 3082 #endif 3083 #endif 3084 default: 3085 break; 3086 } 3087 } 3088 3089 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3090 UNUSED(size); 3091 3092 // get num cmd packets - limit to 1 to reduce complexity 3093 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3094 3095 // get opcode and command status 3096 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3097 3098 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3099 uint8_t status = hci_event_command_status_get_status(packet); 3100 #endif 3101 3102 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3103 bd_addr_type_t addr_type; 3104 bd_addr_t addr; 3105 #endif 3106 3107 switch (opcode){ 3108 #ifdef ENABLE_CLASSIC 3109 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3110 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3111 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3112 #endif 3113 #ifdef ENABLE_LE_CENTRAL 3114 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3115 #endif 3116 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3117 addr_type = hci_stack->outgoing_addr_type; 3118 memcpy(addr, hci_stack->outgoing_addr, 6); 3119 3120 // reset outgoing address info 3121 memset(hci_stack->outgoing_addr, 0, 6); 3122 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3123 3124 // on error 3125 if (status != ERROR_CODE_SUCCESS){ 3126 #ifdef ENABLE_LE_CENTRAL 3127 if (hci_is_le_connection_type(addr_type)){ 3128 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3129 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3130 } 3131 #endif 3132 // error => outgoing connection failed 3133 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3134 if (conn != NULL){ 3135 hci_handle_connection_failed(conn, status); 3136 } 3137 } 3138 break; 3139 #endif 3140 #ifdef ENABLE_CLASSIC 3141 case HCI_OPCODE_HCI_INQUIRY: 3142 if (status == ERROR_CODE_SUCCESS) { 3143 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3144 } else { 3145 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3146 } 3147 break; 3148 #endif 3149 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3150 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3151 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3152 if (status == ERROR_CODE_SUCCESS){ 3153 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3154 } else { 3155 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3156 } 3157 break; 3158 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3159 default: 3160 break; 3161 } 3162 } 3163 3164 #ifdef ENABLE_BLE 3165 static void event_handle_le_connection_complete(const uint8_t * packet){ 3166 bd_addr_t addr; 3167 bd_addr_type_t addr_type; 3168 hci_connection_t * conn; 3169 3170 // read fields 3171 uint8_t status = packet[3]; 3172 hci_role_t role = (hci_role_t) packet[6]; 3173 3174 // support different connection complete events 3175 uint16_t conn_interval; 3176 switch (packet[2]){ 3177 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3178 conn_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3179 break; 3180 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3181 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3182 conn_interval = hci_subevent_le_enhanced_connection_complete_v1_get_conn_interval(packet); 3183 break; 3184 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3185 conn_interval = hci_subevent_le_enhanced_connection_complete_v2_get_conn_interval(packet); 3186 break; 3187 #endif 3188 default: 3189 btstack_unreachable(); 3190 return; 3191 } 3192 3193 // Connection management 3194 reverse_bd_addr(&packet[8], addr); 3195 addr_type = (bd_addr_type_t)packet[7]; 3196 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3197 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3198 3199 #ifdef ENABLE_LE_CENTRAL 3200 // handle error: error is reported only to the initiator -> outgoing connection 3201 if (status){ 3202 3203 // handle cancelled outgoing connection 3204 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3205 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3206 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3207 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3208 // reset state 3209 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3210 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3211 // get outgoing connection conn struct for direct connect 3212 conn = gap_get_outgoing_connection(); 3213 } 3214 3215 // outgoing le connection establishment is done 3216 if (conn){ 3217 // remove entry 3218 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3219 btstack_memory_hci_connection_free( conn ); 3220 } 3221 return; 3222 } 3223 #endif 3224 3225 // on success, both hosts receive connection complete event 3226 if (role == HCI_ROLE_MASTER){ 3227 #ifdef ENABLE_LE_CENTRAL 3228 // if we're master on an le connection, it was an outgoing connection and we're done with it 3229 // note: no hci_connection_t object exists yet for connect with whitelist 3230 if (hci_is_le_connection_type(addr_type)){ 3231 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3232 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3233 } 3234 #endif 3235 } else { 3236 #ifdef ENABLE_LE_PERIPHERAL 3237 // if we're slave, it was an incoming connection, advertisements have stopped 3238 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3239 #endif 3240 } 3241 3242 // LE connections are auto-accepted, so just create a connection if there isn't one already 3243 if (!conn){ 3244 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3245 } 3246 3247 // no memory, sorry. 3248 if (!conn){ 3249 return; 3250 } 3251 3252 conn->state = OPEN; 3253 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3254 conn->le_connection_interval = conn_interval; 3255 3256 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3257 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3258 3259 #ifdef ENABLE_LE_PERIPHERAL 3260 if (role == HCI_ROLE_SLAVE){ 3261 hci_update_advertisements_enabled_for_current_roles(); 3262 } 3263 #endif 3264 3265 // init unenhanced att bearer mtu 3266 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3267 conn->att_connection.mtu_exchanged = false; 3268 3269 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3270 3271 // restart timer 3272 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3273 // btstack_run_loop_add_timer(&conn->timeout); 3274 3275 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3276 3277 hci_emit_nr_connections_changed(); 3278 } 3279 #endif 3280 3281 #ifdef ENABLE_CLASSIC 3282 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){ 3283 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3284 // LEVEL_4 is tested by l2cap 3285 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3286 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3287 if (level >= LEVEL_3){ 3288 // MITM not possible without keyboard or display 3289 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3290 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3291 3292 // MITM possible if one side has keyboard and the other has keyboard or display 3293 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3294 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3295 3296 // MITM not possible if one side has only display and other side has no keyboard 3297 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3298 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3299 } 3300 // LEVEL 2 requires SSP, which is a given 3301 return true; 3302 } 3303 3304 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3305 // get requested security level 3306 gap_security_level_t requested_security_level = conn->requested_security_level; 3307 if (hci_stack->gap_secure_connections_only_mode){ 3308 requested_security_level = LEVEL_4; 3309 } 3310 3311 // assess security: LEVEL 4 requires SC 3312 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3313 if ((requested_security_level == LEVEL_4) && 3314 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3315 !hci_remote_sc_enabled(conn)){ 3316 log_info("Level 4 required, but SC not supported -> abort"); 3317 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3318 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3319 return; 3320 } 3321 3322 // assess security based on io capabilities 3323 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3324 // responder: fully validate io caps of both sides as well as OOB data 3325 bool security_possible = false; 3326 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3327 3328 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3329 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3330 // so we merge the OOB data availability 3331 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3332 if (conn->classic_oob_c_192 != NULL){ 3333 have_oob_data |= 1; 3334 } 3335 if (conn->classic_oob_c_256 != NULL){ 3336 have_oob_data |= 2; 3337 } 3338 // for up to Level 3, either P-192 as well as P-256 will do 3339 // 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 3340 // if remote does not SC, we should not receive P-256 data either 3341 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3342 security_possible = true; 3343 } 3344 // for Level 4, P-256 is needed 3345 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3346 security_possible = true; 3347 } 3348 #endif 3349 3350 if (security_possible == false){ 3351 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3352 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3353 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3354 return; 3355 } 3356 } else { 3357 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3358 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3359 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3360 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3361 log_info("Level 3+ required, but no input/output -> abort"); 3362 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3363 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3364 return; 3365 } 3366 #endif 3367 #endif 3368 } 3369 3370 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3371 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3372 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3373 } else { 3374 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3375 } 3376 #endif 3377 } 3378 3379 #endif 3380 3381 static void event_handler(uint8_t *packet, uint16_t size){ 3382 3383 uint16_t event_length = packet[1]; 3384 3385 // assert packet is complete 3386 if (size != (event_length + 2u)){ 3387 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3388 return; 3389 } 3390 3391 hci_con_handle_t handle; 3392 hci_connection_t * conn; 3393 int i; 3394 3395 #ifdef ENABLE_CLASSIC 3396 hci_link_type_t link_type; 3397 bd_addr_t addr; 3398 bd_addr_type_t addr_type; 3399 #endif 3400 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3401 hci_iso_stream_t * iso_stream; 3402 le_audio_big_t * big; 3403 le_audio_big_sync_t * big_sync; 3404 #endif 3405 3406 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3407 3408 switch (hci_event_packet_get_type(packet)) { 3409 3410 case HCI_EVENT_COMMAND_COMPLETE: 3411 handle_command_complete_event(packet, size); 3412 break; 3413 3414 case HCI_EVENT_COMMAND_STATUS: 3415 handle_command_status_event(packet, size); 3416 break; 3417 3418 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3419 if (size < 3) return; 3420 uint16_t num_handles = packet[2]; 3421 if (size != (3u + num_handles * 4u)) return; 3422 #ifdef ENABLE_CLASSIC 3423 bool notify_sco = false; 3424 #endif 3425 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3426 bool notify_iso = false; 3427 #endif 3428 uint16_t offset = 3; 3429 for (i=0; i<num_handles;i++){ 3430 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3431 offset += 2u; 3432 uint16_t num_packets = little_endian_read_16(packet, offset); 3433 offset += 2u; 3434 3435 conn = hci_connection_for_handle(handle); 3436 if (conn != NULL) { 3437 3438 if (conn->num_packets_sent >= num_packets) { 3439 conn->num_packets_sent -= num_packets; 3440 } else { 3441 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3442 conn->num_packets_sent = 0; 3443 } 3444 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3445 #ifdef ENABLE_CLASSIC 3446 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3447 notify_sco = true; 3448 } 3449 #endif 3450 } 3451 3452 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3453 hci_controller_dump_packets(); 3454 #endif 3455 3456 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3457 if (conn == NULL){ 3458 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3459 if (iso_stream != NULL){ 3460 if (iso_stream->num_packets_sent >= num_packets) { 3461 iso_stream->num_packets_sent -= num_packets; 3462 } else { 3463 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3464 iso_stream->num_packets_sent = 0; 3465 } 3466 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3467 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3468 if (big != NULL){ 3469 big->num_completed_timestamp_current_valid = true; 3470 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3471 } 3472 } 3473 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3474 num_packets, handle, iso_stream->num_packets_sent); 3475 notify_iso = true; 3476 } 3477 } 3478 #endif 3479 } 3480 3481 #ifdef ENABLE_CLASSIC 3482 if (notify_sco){ 3483 hci_notify_if_sco_can_send_now(); 3484 } 3485 #endif 3486 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3487 if (notify_iso){ 3488 hci_iso_notify_can_send_now(); 3489 } 3490 #endif 3491 break; 3492 } 3493 3494 #ifdef ENABLE_CLASSIC 3495 case HCI_EVENT_FLUSH_OCCURRED: 3496 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3497 handle = hci_event_flush_occurred_get_handle(packet); 3498 conn = hci_connection_for_handle(handle); 3499 if (conn) { 3500 log_info("Flush occurred, disconnect 0x%04x", handle); 3501 conn->state = SEND_DISCONNECT; 3502 } 3503 break; 3504 3505 case HCI_EVENT_INQUIRY_COMPLETE: 3506 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3507 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3508 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3509 hci_emit_event(event, sizeof(event), 1); 3510 } 3511 break; 3512 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3513 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3514 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3515 } 3516 break; 3517 case HCI_EVENT_CONNECTION_REQUEST: 3518 reverse_bd_addr(&packet[2], addr); 3519 link_type = (hci_link_type_t) packet[11]; 3520 3521 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3522 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3523 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3524 bd_addr_copy(hci_stack->decline_addr, addr); 3525 break; 3526 } 3527 3528 if (hci_stack->gap_classic_accept_callback != NULL){ 3529 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3530 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3531 bd_addr_copy(hci_stack->decline_addr, addr); 3532 break; 3533 } 3534 } 3535 3536 // TODO: eval COD 8-10 3537 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3538 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3539 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3540 if (!conn) { 3541 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3542 } 3543 if (!conn) { 3544 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3545 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3546 bd_addr_copy(hci_stack->decline_addr, addr); 3547 hci_run(); 3548 // avoid event to higher layer 3549 return; 3550 } 3551 conn->state = RECEIVED_CONNECTION_REQUEST; 3552 // store info about eSCO 3553 if (link_type == HCI_LINK_TYPE_ESCO){ 3554 conn->remote_supported_features[0] |= 1; 3555 } 3556 hci_run(); 3557 break; 3558 3559 case HCI_EVENT_CONNECTION_COMPLETE: 3560 // Connection management 3561 reverse_bd_addr(&packet[5], addr); 3562 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3563 addr_type = BD_ADDR_TYPE_ACL; 3564 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3565 if (conn) { 3566 switch (conn->state){ 3567 // expected states 3568 case ACCEPTED_CONNECTION_REQUEST: 3569 case SENT_CREATE_CONNECTION: 3570 break; 3571 // unexpected state -> ignore 3572 default: 3573 // don't forward event to app 3574 return; 3575 } 3576 if (!packet[2]){ 3577 conn->state = OPEN; 3578 conn->con_handle = little_endian_read_16(packet, 3); 3579 3580 // trigger write supervision timeout if we're master 3581 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3582 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3583 } 3584 3585 // trigger write automatic flush timeout 3586 if (hci_stack->automatic_flush_timeout != 0){ 3587 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3588 } 3589 3590 // restart timer 3591 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3592 btstack_run_loop_add_timer(&conn->timeout); 3593 3594 // trigger remote features for dedicated bonding 3595 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3596 hci_trigger_remote_features_for_connection(conn); 3597 } 3598 3599 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3600 3601 hci_emit_nr_connections_changed(); 3602 } else { 3603 // connection failed 3604 hci_handle_connection_failed(conn, packet[2]); 3605 } 3606 } 3607 break; 3608 3609 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3610 reverse_bd_addr(&packet[5], addr); 3611 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3612 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3613 btstack_assert(conn != NULL); 3614 3615 if (packet[2] != ERROR_CODE_SUCCESS){ 3616 // connection failed, remove entry 3617 hci_handle_connection_failed(conn, packet[2]); 3618 break; 3619 } 3620 3621 conn->state = OPEN; 3622 conn->con_handle = little_endian_read_16(packet, 3); 3623 3624 #ifdef ENABLE_SCO_OVER_HCI 3625 // update SCO 3626 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3627 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3628 } 3629 // trigger can send now 3630 if (hci_have_usb_transport()){ 3631 hci_stack->sco_can_send_now = true; 3632 } 3633 #endif 3634 #ifdef HAVE_SCO_TRANSPORT 3635 // configure sco transport 3636 if (hci_stack->sco_transport != NULL){ 3637 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3638 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3639 } 3640 #endif 3641 break; 3642 3643 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3644 handle = little_endian_read_16(packet, 3); 3645 conn = hci_connection_for_handle(handle); 3646 if (!conn) break; 3647 if (!packet[2]){ 3648 const uint8_t * features = &packet[5]; 3649 hci_handle_remote_features_page_0(conn, features); 3650 3651 // read extended features if possible 3652 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3653 && ((conn->remote_supported_features[0] & 2) != 0)) { 3654 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3655 break; 3656 } 3657 } 3658 hci_handle_remote_features_received(conn); 3659 break; 3660 3661 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3662 handle = little_endian_read_16(packet, 3); 3663 conn = hci_connection_for_handle(handle); 3664 if (!conn) break; 3665 // status = ok, page = 1 3666 if (!packet[2]) { 3667 uint8_t page_number = packet[5]; 3668 uint8_t maximum_page_number = packet[6]; 3669 const uint8_t * features = &packet[7]; 3670 bool done = false; 3671 switch (page_number){ 3672 case 1: 3673 hci_handle_remote_features_page_1(conn, features); 3674 if (maximum_page_number >= 2){ 3675 // get Secure Connections (Controller) from Page 2 if available 3676 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3677 } else { 3678 // otherwise, assume SC (Controller) == SC (Host) 3679 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3680 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3681 } 3682 done = true; 3683 } 3684 break; 3685 case 2: 3686 hci_handle_remote_features_page_2(conn, features); 3687 done = true; 3688 break; 3689 default: 3690 break; 3691 } 3692 if (!done) break; 3693 } 3694 hci_handle_remote_features_received(conn); 3695 break; 3696 3697 case HCI_EVENT_LINK_KEY_REQUEST: 3698 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3699 hci_event_link_key_request_get_bd_addr(packet, addr); 3700 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3701 if (!conn) break; 3702 3703 // lookup link key in db if not cached 3704 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3705 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3706 } 3707 3708 // response sent by hci_run() 3709 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3710 #endif 3711 break; 3712 3713 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3714 hci_event_link_key_request_get_bd_addr(packet, addr); 3715 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3716 if (!conn) break; 3717 3718 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3719 3720 // CVE-2020-26555: ignore NULL link key 3721 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3722 if (btstack_is_null(&packet[8], 16)) break; 3723 3724 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3725 // Change Connection Encryption keeps link key type 3726 if (link_key_type != CHANGED_COMBINATION_KEY){ 3727 conn->link_key_type = link_key_type; 3728 } 3729 3730 // cache link key. link keys stored in little-endian format for legacy reasons 3731 memcpy(&conn->link_key, &packet[8], 16); 3732 3733 // only store link key: 3734 // - if bondable enabled 3735 if (hci_stack->bondable == false) break; 3736 // - if security level sufficient 3737 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3738 // - for SSP, also check if remote side requested bonding as well 3739 if (conn->link_key_type != COMBINATION_KEY){ 3740 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3741 if (!remote_bonding){ 3742 break; 3743 } 3744 } 3745 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3746 break; 3747 } 3748 3749 case HCI_EVENT_PIN_CODE_REQUEST: 3750 hci_event_pin_code_request_get_bd_addr(packet, addr); 3751 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3752 if (!conn) break; 3753 3754 hci_pairing_started(conn, false); 3755 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3756 if (!hci_stack->bondable ){ 3757 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3758 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3759 hci_run(); 3760 return; 3761 } 3762 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3763 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3764 log_info("Level 4 required, but SC not supported -> abort"); 3765 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3766 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3767 hci_run(); 3768 return; 3769 } 3770 break; 3771 3772 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3773 hci_event_io_capability_response_get_bd_addr(packet, addr); 3774 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3775 if (!conn) break; 3776 3777 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3778 hci_pairing_started(conn, true); 3779 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3780 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3781 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3782 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3783 #endif 3784 break; 3785 3786 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3787 hci_event_io_capability_response_get_bd_addr(packet, addr); 3788 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3789 if (!conn) break; 3790 3791 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3792 hci_connection_timestamp(conn); 3793 hci_pairing_started(conn, true); 3794 break; 3795 3796 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3797 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3798 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3799 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3800 if (!conn) break; 3801 3802 hci_connection_timestamp(conn); 3803 3804 hci_pairing_started(conn, true); 3805 3806 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3807 break; 3808 #endif 3809 3810 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3811 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3812 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3813 if (!conn) break; 3814 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3815 if (hci_stack->ssp_auto_accept){ 3816 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3817 }; 3818 } else { 3819 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3820 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3821 // don't forward event to app 3822 hci_run(); 3823 return; 3824 } 3825 break; 3826 3827 case HCI_EVENT_USER_PASSKEY_REQUEST: 3828 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3829 if (hci_stack->ssp_auto_accept){ 3830 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3831 }; 3832 break; 3833 3834 case HCI_EVENT_MODE_CHANGE: 3835 handle = hci_event_mode_change_get_handle(packet); 3836 conn = hci_connection_for_handle(handle); 3837 if (!conn) break; 3838 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3839 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3840 break; 3841 #endif 3842 3843 case HCI_EVENT_ENCRYPTION_CHANGE: 3844 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3845 handle = hci_event_encryption_change_get_connection_handle(packet); 3846 conn = hci_connection_for_handle(handle); 3847 if (!conn) break; 3848 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 3849 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3850 if (encryption_enabled){ 3851 if (hci_is_le_connection(conn)){ 3852 // For LE, we accept connection as encrypted 3853 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3854 } 3855 #ifdef ENABLE_CLASSIC 3856 else { 3857 3858 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3859 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3860 bool connected_uses_aes_ccm = encryption_enabled == 2; 3861 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3862 log_info("SC during pairing, but only E0 now -> abort"); 3863 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3864 break; 3865 } 3866 3867 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3868 if (connected_uses_aes_ccm){ 3869 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3870 } 3871 3872 #ifdef ENABLE_TESTING_SUPPORT 3873 // work around for issue with PTS dongle 3874 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3875 #endif 3876 // validate encryption key size 3877 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3878 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3879 // already got encryption key size 3880 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3881 } else { 3882 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3883 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3884 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3885 } else { 3886 // if not, pretend everything is perfect 3887 hci_handle_read_encryption_key_size_complete(conn, 16); 3888 } 3889 } 3890 } 3891 #endif 3892 } else { 3893 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3894 } 3895 } else { 3896 uint8_t status = hci_event_encryption_change_get_status(packet); 3897 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3898 conn->bonding_flags &= ~BONDING_DEDICATED; 3899 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3900 conn->bonding_status = status; 3901 } 3902 } 3903 3904 break; 3905 3906 #ifdef ENABLE_CLASSIC 3907 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3908 handle = hci_event_authentication_complete_get_connection_handle(packet); 3909 conn = hci_connection_for_handle(handle); 3910 if (!conn) break; 3911 3912 // clear authentication active flag 3913 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3914 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3915 3916 // authenticated only if auth status == 0 3917 if (hci_event_authentication_complete_get_status(packet) == 0){ 3918 // authenticated 3919 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3920 3921 // If not already encrypted, start encryption 3922 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3923 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3924 break; 3925 } 3926 } 3927 3928 // emit updated security level (will be 0 if not authenticated) 3929 hci_handle_mutual_authentication_completed(conn); 3930 break; 3931 3932 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3933 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3934 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3935 if (!conn) break; 3936 3937 // treat successfully paired connection as authenticated 3938 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3939 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3940 } 3941 3942 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3943 break; 3944 #endif 3945 3946 // HCI_EVENT_DISCONNECTION_COMPLETE 3947 // has been split, to first notify stack before shutting connection down 3948 // see end of function, too. 3949 case HCI_EVENT_DISCONNECTION_COMPLETE: 3950 if (packet[2]) break; // status != 0 3951 handle = little_endian_read_16(packet, 3); 3952 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3953 if (hci_stack->acl_fragmentation_total_size > 0u) { 3954 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3955 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3956 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3957 hci_stack->acl_fragmentation_total_size = 0; 3958 hci_stack->acl_fragmentation_pos = 0; 3959 if (release_buffer){ 3960 hci_release_packet_buffer(); 3961 } 3962 } 3963 } 3964 3965 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3966 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3967 if (hci_stack->iso_fragmentation_total_size > 0u) { 3968 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3969 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3970 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3971 hci_stack->iso_fragmentation_total_size = 0; 3972 hci_stack->iso_fragmentation_pos = 0; 3973 if (release_buffer){ 3974 hci_release_packet_buffer(); 3975 } 3976 } 3977 } 3978 3979 // finalize iso stream for CIS handle 3980 iso_stream = hci_iso_stream_for_con_handle(handle); 3981 if (iso_stream != NULL){ 3982 hci_iso_stream_finalize(iso_stream); 3983 break; 3984 } 3985 3986 // finalize iso stream(s) for ACL handle 3987 btstack_linked_list_iterator_t it; 3988 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3989 while (btstack_linked_list_iterator_has_next(&it)){ 3990 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3991 if (iso_stream->acl_handle == handle ) { 3992 hci_iso_stream_finalize(iso_stream); 3993 } 3994 } 3995 #endif 3996 3997 conn = hci_connection_for_handle(handle); 3998 if (!conn) break; 3999 #ifdef ENABLE_CLASSIC 4000 // pairing failed if it was ongoing 4001 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4002 #endif 4003 4004 // emit dedicatd bonding event 4005 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4006 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4007 } 4008 4009 // mark connection for shutdown, stop timers, reset state 4010 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4011 hci_connection_stop_timer(conn); 4012 hci_connection_init(conn); 4013 4014 #ifdef ENABLE_BLE 4015 #ifdef ENABLE_LE_PERIPHERAL 4016 // re-enable advertisements for le connections if active 4017 if (hci_is_le_connection(conn)){ 4018 hci_update_advertisements_enabled_for_current_roles(); 4019 } 4020 #endif 4021 #endif 4022 break; 4023 4024 case HCI_EVENT_HARDWARE_ERROR: 4025 log_error("Hardware Error: 0x%02x", packet[2]); 4026 if (hci_stack->hardware_error_callback){ 4027 (*hci_stack->hardware_error_callback)(packet[2]); 4028 } else { 4029 // if no special requests, just reboot stack 4030 hci_power_control_off(); 4031 hci_power_control_on(); 4032 } 4033 break; 4034 4035 #ifdef ENABLE_CLASSIC 4036 case HCI_EVENT_ROLE_CHANGE: 4037 if (packet[2]) break; // status != 0 4038 reverse_bd_addr(&packet[3], addr); 4039 addr_type = BD_ADDR_TYPE_ACL; 4040 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4041 if (!conn) break; 4042 conn->role = (hci_role_t) packet[9]; 4043 break; 4044 #endif 4045 4046 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4047 // release packet buffer only for asynchronous transport and if there are not further fragments 4048 if (hci_transport_synchronous()) { 4049 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4050 return; // instead of break: to avoid re-entering hci_run() 4051 } 4052 hci_stack->acl_fragmentation_tx_active = 0; 4053 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4054 hci_stack->iso_fragmentation_tx_active = 0; 4055 if (hci_stack->iso_fragmentation_total_size) break; 4056 #endif 4057 if (hci_stack->acl_fragmentation_total_size) break; 4058 hci_release_packet_buffer(); 4059 4060 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4061 hci_iso_notify_can_send_now(); 4062 #endif 4063 // L2CAP receives this event via the hci_emit_event below 4064 4065 #ifdef ENABLE_CLASSIC 4066 // For SCO, we do the can_send_now_check here 4067 hci_notify_if_sco_can_send_now(); 4068 #endif 4069 break; 4070 4071 #ifdef ENABLE_CLASSIC 4072 case HCI_EVENT_SCO_CAN_SEND_NOW: 4073 // For SCO, we do the can_send_now_check here 4074 hci_stack->sco_can_send_now = true; 4075 hci_notify_if_sco_can_send_now(); 4076 return; 4077 4078 // explode inquriy results for easier consumption 4079 case HCI_EVENT_INQUIRY_RESULT: 4080 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4081 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4082 gap_inquiry_explode(packet, size); 4083 break; 4084 #endif 4085 4086 #ifdef ENABLE_BLE 4087 case HCI_EVENT_LE_META: 4088 switch (packet[2]){ 4089 #ifdef ENABLE_LE_CENTRAL 4090 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4091 if (!hci_stack->le_scanning_enabled) break; 4092 le_handle_advertisement_report(packet, size); 4093 break; 4094 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4095 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4096 if (!hci_stack->le_scanning_enabled) break; 4097 le_handle_extended_advertisement_report(packet, size); 4098 break; 4099 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4100 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4101 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4102 break; 4103 #endif 4104 #endif 4105 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4106 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4107 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4108 event_handle_le_connection_complete(packet); 4109 break; 4110 4111 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4112 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4113 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4114 conn = hci_connection_for_handle(handle); 4115 if (!conn) break; 4116 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4117 break; 4118 4119 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4120 // connection 4121 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4122 conn = hci_connection_for_handle(handle); 4123 if (conn) { 4124 // read arguments 4125 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4126 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4127 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4128 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4129 4130 // validate against current connection parameter range 4131 le_connection_parameter_range_t existing_range; 4132 gap_get_connection_parameter_range(&existing_range); 4133 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4134 if (update_parameter){ 4135 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4136 conn->le_conn_interval_min = le_conn_interval_min; 4137 conn->le_conn_interval_max = le_conn_interval_max; 4138 conn->le_conn_latency = le_conn_latency; 4139 conn->le_supervision_timeout = le_supervision_timeout; 4140 } else { 4141 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4142 } 4143 } 4144 break; 4145 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4146 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4147 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4148 conn = hci_connection_for_handle(handle); 4149 if (conn) { 4150 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4151 } 4152 break; 4153 #endif 4154 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4155 case HCI_SUBEVENT_LE_CIS_REQUEST: 4156 // incoming CIS request, allocate iso stream object and cache metadata 4157 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4158 hci_subevent_le_cis_request_get_cig_id(packet), 4159 hci_subevent_le_cis_request_get_cis_id(packet)); 4160 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4161 if (iso_stream != NULL){ 4162 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4163 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4164 } 4165 break; 4166 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4167 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4168 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4169 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4170 iso_stream = hci_iso_stream_for_con_handle(handle); 4171 btstack_assert(iso_stream != NULL); 4172 // track SDU 4173 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4174 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4175 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4176 // CIS Accept by Peripheral 4177 if (status == ERROR_CODE_SUCCESS){ 4178 if (iso_stream->max_sdu_p_to_c > 0){ 4179 // we're peripheral and we will send data 4180 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4181 } else { 4182 // we're peripheral and we will only receive data 4183 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4184 } 4185 } else { 4186 hci_cis_handle_created(iso_stream, status); 4187 } 4188 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4189 } else { 4190 // CIG Setup by Central 4191 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4192 btstack_assert(cig != NULL); 4193 // update iso stream state 4194 if (status == ERROR_CODE_SUCCESS){ 4195 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4196 } else { 4197 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4198 } 4199 // update cig state 4200 uint8_t i; 4201 for (i=0;i<cig->num_cis;i++){ 4202 if (cig->cis_con_handles[i] == handle){ 4203 cig->cis_setup_active[i] = false; 4204 if (status == ERROR_CODE_SUCCESS){ 4205 cig->cis_established[i] = true; 4206 } else { 4207 hci_cis_handle_created(iso_stream, status); 4208 } 4209 } 4210 } 4211 4212 // trigger iso path setup if complete 4213 bool cis_setup_active = false; 4214 for (i=0;i<cig->num_cis;i++){ 4215 cis_setup_active |= cig->cis_setup_active[i]; 4216 } 4217 if (cis_setup_active == false){ 4218 cig->state_vars.next_cis = 0; 4219 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4220 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4221 } 4222 } 4223 } 4224 break; 4225 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4226 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4227 big = hci_big_for_handle(packet[4]); 4228 if (big != NULL){ 4229 uint8_t status = packet[3]; 4230 if (status == ERROR_CODE_SUCCESS){ 4231 // store bis_con_handles and trigger iso path setup 4232 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4233 uint8_t i; 4234 for (i=0;i<num_bis;i++){ 4235 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4236 big->bis_con_handles[i] = bis_handle; 4237 // assign bis handle 4238 btstack_linked_list_iterator_t it; 4239 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4240 while (btstack_linked_list_iterator_has_next(&it)){ 4241 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4242 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4243 (iso_stream->group_id == big->big_handle)){ 4244 iso_stream->cis_handle = bis_handle; 4245 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4246 break; 4247 } 4248 } 4249 } 4250 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4251 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4252 big->state_vars.next_bis = 0; 4253 } 4254 } else { 4255 // create BIG failed or has been stopped by us 4256 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4257 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4258 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4259 hci_emit_big_created(big, status); 4260 } else { 4261 hci_emit_big_terminated(big); 4262 } 4263 } 4264 } 4265 break; 4266 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4267 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4268 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4269 if (big != NULL){ 4270 // finalize associated ISO streams 4271 btstack_linked_list_iterator_t it; 4272 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4273 while (btstack_linked_list_iterator_has_next(&it)){ 4274 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4275 if (iso_stream->group_id == big->big_handle){ 4276 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4277 btstack_linked_list_iterator_remove(&it); 4278 btstack_memory_hci_iso_stream_free(iso_stream); 4279 } 4280 } 4281 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4282 switch (big->state){ 4283 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4284 hci_emit_big_created(big, big->state_vars.status); 4285 break; 4286 default: 4287 hci_emit_big_terminated(big); 4288 break; 4289 } 4290 } 4291 break; 4292 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4293 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4294 big_sync = hci_big_sync_for_handle(packet[4]); 4295 if (big_sync != NULL){ 4296 uint8_t status = packet[3]; 4297 uint8_t big_handle = packet[4]; 4298 if (status == ERROR_CODE_SUCCESS){ 4299 // store bis_con_handles and trigger iso path setup 4300 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4301 uint8_t i; 4302 for (i=0;i<num_bis;i++){ 4303 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4304 } 4305 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4306 // trigger iso path setup 4307 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4308 big_sync->state_vars.next_bis = 0; 4309 } 4310 } else { 4311 // create BIG Sync failed or has been stopped by us 4312 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4313 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4314 hci_emit_big_sync_created(big_sync, status); 4315 } else { 4316 hci_emit_big_sync_stopped(big_handle); 4317 } 4318 } 4319 } 4320 break; 4321 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4322 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4323 big_sync = hci_big_sync_for_handle(packet[4]); 4324 if (big_sync != NULL){ 4325 uint8_t big_handle = packet[4]; 4326 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4327 hci_emit_big_sync_stopped(big_handle); 4328 } 4329 break; 4330 #endif 4331 default: 4332 break; 4333 } 4334 break; 4335 #endif 4336 case HCI_EVENT_VENDOR_SPECIFIC: 4337 // Vendor specific commands often create vendor specific event instead of num completed packets 4338 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4339 switch (hci_stack->manufacturer){ 4340 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4341 hci_stack->num_cmd_packets = 1; 4342 break; 4343 default: 4344 break; 4345 } 4346 break; 4347 default: 4348 break; 4349 } 4350 4351 handle_event_for_current_stack_state(packet, size); 4352 4353 // notify upper stack 4354 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4355 4356 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4357 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4358 handle = little_endian_read_16(packet, 3); 4359 hci_connection_t * aConn = hci_connection_for_handle(handle); 4360 // discard connection if app did not trigger a reconnect in the event handler 4361 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4362 hci_shutdown_connection(aConn); 4363 } 4364 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4365 hci_controller_dump_packets(); 4366 #endif 4367 } 4368 4369 // execute main loop 4370 hci_run(); 4371 } 4372 4373 #ifdef ENABLE_CLASSIC 4374 4375 #ifdef ENABLE_SCO_OVER_HCI 4376 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4377 static void sco_schedule_tx(hci_connection_t * conn); 4378 4379 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4380 log_debug("SCO TX Timeout"); 4381 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4382 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4383 if (!conn) return; 4384 4385 // trigger send 4386 conn->sco_tx_ready = 1; 4387 // extra packet if CVSD but SCO buffer is too short 4388 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4389 conn->sco_tx_ready++; 4390 } 4391 hci_notify_if_sco_can_send_now(); 4392 } 4393 4394 4395 #define SCO_TX_AFTER_RX_MS (6) 4396 4397 static void sco_schedule_tx(hci_connection_t * conn){ 4398 4399 uint32_t now = btstack_run_loop_get_time_ms(); 4400 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4401 int time_delta_ms = sco_tx_ms - now; 4402 4403 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4404 4405 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4406 btstack_run_loop_remove_timer(timer); 4407 btstack_run_loop_set_timer(timer, time_delta_ms); 4408 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4409 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4410 btstack_run_loop_add_timer(timer); 4411 } 4412 #endif 4413 4414 static void sco_handler(uint8_t * packet, uint16_t size){ 4415 // lookup connection struct 4416 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4417 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4418 if (!conn) return; 4419 4420 #ifdef ENABLE_SCO_OVER_HCI 4421 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4422 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4423 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4424 packet[2] = 0x3c; 4425 memmove(&packet[3], &packet[23], 63); 4426 size = 63; 4427 } 4428 } 4429 4430 if (hci_have_usb_transport()){ 4431 // Nothing to do 4432 } else { 4433 // 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); 4434 if (hci_stack->synchronous_flow_control_enabled == 0){ 4435 uint32_t now = btstack_run_loop_get_time_ms(); 4436 4437 if (!conn->sco_rx_valid){ 4438 // ignore first 10 packets 4439 conn->sco_rx_count++; 4440 // log_debug("sco rx count %u", conn->sco_rx_count); 4441 if (conn->sco_rx_count == 10) { 4442 // use first timestamp as is and pretent it just started 4443 conn->sco_rx_ms = now; 4444 conn->sco_rx_valid = 1; 4445 conn->sco_rx_count = 0; 4446 sco_schedule_tx(conn); 4447 } 4448 } else { 4449 // track expected arrival timme 4450 conn->sco_rx_count++; 4451 conn->sco_rx_ms += 7; 4452 int delta = (int32_t) (now - conn->sco_rx_ms); 4453 if (delta > 0){ 4454 conn->sco_rx_ms++; 4455 } 4456 // log_debug("sco rx %u", conn->sco_rx_ms); 4457 sco_schedule_tx(conn); 4458 } 4459 } 4460 } 4461 #endif 4462 4463 // deliver to app 4464 if (hci_stack->sco_packet_handler) { 4465 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4466 } 4467 4468 #ifdef HAVE_SCO_TRANSPORT 4469 // We can send one packet for each received packet 4470 conn->sco_tx_ready++; 4471 hci_notify_if_sco_can_send_now(); 4472 #endif 4473 4474 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4475 conn->num_packets_completed++; 4476 hci_stack->host_completed_packets = 1; 4477 hci_run(); 4478 #endif 4479 } 4480 #endif 4481 4482 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4483 hci_dump_packet(packet_type, 1, packet, size); 4484 switch (packet_type) { 4485 case HCI_EVENT_PACKET: 4486 event_handler(packet, size); 4487 break; 4488 case HCI_ACL_DATA_PACKET: 4489 acl_handler(packet, size); 4490 break; 4491 #ifdef ENABLE_CLASSIC 4492 case HCI_SCO_DATA_PACKET: 4493 sco_handler(packet, size); 4494 break; 4495 #endif 4496 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4497 case HCI_ISO_DATA_PACKET: 4498 hci_iso_packet_handler(packet, size); 4499 break; 4500 #endif 4501 default: 4502 break; 4503 } 4504 } 4505 4506 /** 4507 * @brief Add event packet handler. 4508 */ 4509 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4510 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4511 } 4512 4513 /** 4514 * @brief Remove event packet handler. 4515 */ 4516 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4517 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4518 } 4519 4520 /** Register HCI packet handlers */ 4521 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4522 hci_stack->acl_packet_handler = handler; 4523 } 4524 4525 #ifdef ENABLE_CLASSIC 4526 /** 4527 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4528 */ 4529 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4530 hci_stack->sco_packet_handler = handler; 4531 } 4532 #endif 4533 4534 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4535 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4536 hci_stack->iso_packet_handler = handler; 4537 } 4538 #endif 4539 4540 static void hci_state_reset(void){ 4541 // no connections yet 4542 hci_stack->connections = NULL; 4543 4544 // keep discoverable/connectable as this has been requested by the client(s) 4545 // hci_stack->discoverable = 0; 4546 // hci_stack->connectable = 0; 4547 // hci_stack->bondable = 1; 4548 // hci_stack->own_addr_type = 0; 4549 4550 // buffer is free 4551 hci_stack->hci_packet_buffer_reserved = false; 4552 4553 // no pending cmds 4554 hci_stack->decline_reason = 0; 4555 4556 hci_stack->secure_connections_active = false; 4557 4558 #ifdef ENABLE_CLASSIC 4559 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4560 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4561 4562 hci_stack->gap_tasks_classic = 4563 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4564 GAP_TASK_SET_CLASS_OF_DEVICE | 4565 GAP_TASK_SET_LOCAL_NAME | 4566 GAP_TASK_SET_EIR_DATA | 4567 GAP_TASK_WRITE_SCAN_ENABLE | 4568 GAP_TASK_WRITE_PAGE_TIMEOUT; 4569 #endif 4570 4571 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4572 hci_stack->classic_read_local_oob_data = false; 4573 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4574 #endif 4575 4576 // LE 4577 #ifdef ENABLE_BLE 4578 memset(hci_stack->le_random_address, 0, 6); 4579 hci_stack->le_random_address_set = 0; 4580 #endif 4581 #ifdef ENABLE_LE_CENTRAL 4582 hci_stack->le_scanning_active = false; 4583 hci_stack->le_scanning_param_update = true; 4584 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4585 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4586 hci_stack->le_whitelist_capacity = 0; 4587 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4588 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4589 #endif 4590 #endif 4591 #ifdef ENABLE_LE_PERIPHERAL 4592 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4593 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4594 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4595 } 4596 if (hci_stack->le_advertisements_data != NULL){ 4597 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4598 } 4599 #endif 4600 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4601 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4602 #endif 4603 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4604 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4605 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4606 #endif 4607 } 4608 4609 #ifdef ENABLE_CLASSIC 4610 /** 4611 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4612 */ 4613 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4614 // store and open remote device db 4615 hci_stack->link_key_db = link_key_db; 4616 if (hci_stack->link_key_db) { 4617 hci_stack->link_key_db->open(); 4618 } 4619 } 4620 #endif 4621 4622 void hci_init(const hci_transport_t *transport, const void *config){ 4623 4624 #ifdef HAVE_MALLOC 4625 if (!hci_stack) { 4626 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4627 } 4628 #else 4629 hci_stack = &hci_stack_static; 4630 #endif 4631 memset(hci_stack, 0, sizeof(hci_stack_t)); 4632 4633 // reference to use transport layer implementation 4634 hci_stack->hci_transport = transport; 4635 4636 // reference to used config 4637 hci_stack->config = config; 4638 4639 // setup pointer for outgoing packet buffer 4640 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4641 4642 // max acl payload size defined in config.h 4643 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4644 4645 // register packet handlers with transport 4646 transport->register_packet_handler(&packet_handler); 4647 4648 hci_stack->state = HCI_STATE_OFF; 4649 4650 // class of device 4651 hci_stack->class_of_device = 0x007a020c; // Smartphone 4652 4653 // bondable by default 4654 hci_stack->bondable = 1; 4655 4656 #ifdef ENABLE_CLASSIC 4657 // classic name 4658 hci_stack->local_name = default_classic_name; 4659 4660 // Master slave policy 4661 hci_stack->master_slave_policy = 1; 4662 4663 // Allow Role Switch 4664 hci_stack->allow_role_switch = 1; 4665 4666 // Default / minimum security level = 2 4667 hci_stack->gap_security_level = LEVEL_2; 4668 4669 // Default Security Mode 4 4670 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4671 4672 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4673 hci_stack->gap_required_encyrption_key_size = 7; 4674 4675 // Link Supervision Timeout 4676 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4677 4678 #endif 4679 4680 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4681 hci_stack->ssp_enable = 1; 4682 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4683 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4684 hci_stack->ssp_auto_accept = 1; 4685 4686 // Secure Connections: enable (requires support from Controller) 4687 hci_stack->secure_connections_enable = true; 4688 4689 // voice setting - signed 16 bit pcm data with CVSD over the air 4690 hci_stack->sco_voice_setting = 0x60; 4691 4692 #ifdef ENABLE_BLE 4693 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4694 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4695 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4696 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4697 hci_stack->le_connection_latency = 4; // 4 4698 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4699 hci_stack->le_minimum_ce_length = 0; // 0 ms 4700 hci_stack->le_maximum_ce_length = 0; // 0 ms 4701 #endif 4702 4703 #ifdef ENABLE_LE_CENTRAL 4704 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4705 4706 // default LE Scanning 4707 hci_stack->le_scan_type = 0x01; // active 4708 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4709 hci_stack->le_scan_window = 0x30; // 30 ms 4710 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4711 #endif 4712 4713 #ifdef ENABLE_LE_PERIPHERAL 4714 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4715 4716 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4717 hci_stack->le_advertisements_interval_min = 0x0800; 4718 hci_stack->le_advertisements_interval_max = 0x0800; 4719 hci_stack->le_advertisements_type = 0; 4720 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4721 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4722 hci_stack->le_advertisements_channel_map = 0x07; 4723 hci_stack->le_advertisements_filter_policy = 0; 4724 #endif 4725 4726 // connection parameter range used to answer connection parameter update requests in l2cap 4727 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4728 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4729 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4730 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4731 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4732 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4733 4734 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4735 hci_stack->iso_packets_to_queue = 1; 4736 #endif 4737 4738 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4739 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4740 #endif 4741 4742 hci_state_reset(); 4743 } 4744 4745 void hci_deinit(void){ 4746 btstack_run_loop_remove_timer(&hci_stack->timeout); 4747 #ifdef HAVE_MALLOC 4748 if (hci_stack) { 4749 free(hci_stack); 4750 } 4751 #endif 4752 hci_stack = NULL; 4753 4754 #ifdef ENABLE_CLASSIC 4755 disable_l2cap_timeouts = 0; 4756 #endif 4757 } 4758 4759 /** 4760 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4761 */ 4762 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4763 hci_stack->chipset = chipset_driver; 4764 4765 // reset chipset driver - init is also called on power_up 4766 if (hci_stack->chipset && hci_stack->chipset->init){ 4767 hci_stack->chipset->init(hci_stack->config); 4768 } 4769 } 4770 4771 void hci_enable_custom_pre_init(void){ 4772 hci_stack->chipset_pre_init = true; 4773 } 4774 4775 /** 4776 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4777 */ 4778 void hci_set_control(const btstack_control_t *hardware_control){ 4779 // references to used control implementation 4780 hci_stack->control = hardware_control; 4781 // init with transport config 4782 hardware_control->init(hci_stack->config); 4783 } 4784 4785 static void hci_discard_connections(void){ 4786 btstack_linked_list_iterator_t it; 4787 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4788 while (btstack_linked_list_iterator_has_next(&it)){ 4789 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4790 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4791 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4792 hci_shutdown_connection(connection); 4793 } 4794 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4795 while (hci_stack->iso_streams != NULL){ 4796 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4797 } 4798 #endif 4799 } 4800 4801 void hci_close(void){ 4802 4803 #ifdef ENABLE_CLASSIC 4804 // close remote device db 4805 if (hci_stack->link_key_db) { 4806 hci_stack->link_key_db->close(); 4807 } 4808 #endif 4809 4810 hci_discard_connections(); 4811 4812 hci_power_control(HCI_POWER_OFF); 4813 4814 #ifdef HAVE_MALLOC 4815 free(hci_stack); 4816 #endif 4817 hci_stack = NULL; 4818 } 4819 4820 #ifdef HAVE_SCO_TRANSPORT 4821 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4822 hci_stack->sco_transport = sco_transport; 4823 sco_transport->register_packet_handler(&packet_handler); 4824 } 4825 #endif 4826 4827 #ifdef ENABLE_CLASSIC 4828 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4829 // validate ranage and set 4830 if (encryption_key_size < 7) return; 4831 if (encryption_key_size > 16) return; 4832 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4833 } 4834 4835 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4836 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4837 hci_stack->gap_security_mode = security_mode; 4838 return ERROR_CODE_SUCCESS; 4839 } else { 4840 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4841 } 4842 } 4843 4844 gap_security_mode_t gap_get_security_mode(void){ 4845 return hci_stack->gap_security_mode; 4846 } 4847 4848 void gap_set_security_level(gap_security_level_t security_level){ 4849 hci_stack->gap_security_level = security_level; 4850 } 4851 4852 gap_security_level_t gap_get_security_level(void){ 4853 if (hci_stack->gap_secure_connections_only_mode){ 4854 return LEVEL_4; 4855 } 4856 return hci_stack->gap_security_level; 4857 } 4858 4859 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4860 hci_stack->gap_minimal_service_security_level = security_level; 4861 } 4862 4863 void gap_set_secure_connections_only_mode(bool enable){ 4864 hci_stack->gap_secure_connections_only_mode = enable; 4865 } 4866 4867 bool gap_get_secure_connections_only_mode(void){ 4868 return hci_stack->gap_secure_connections_only_mode; 4869 } 4870 #endif 4871 4872 #ifdef ENABLE_CLASSIC 4873 void gap_set_class_of_device(uint32_t class_of_device){ 4874 hci_stack->class_of_device = class_of_device; 4875 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4876 hci_run(); 4877 } 4878 4879 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4880 hci_stack->default_link_policy_settings = default_link_policy_settings; 4881 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4882 hci_run(); 4883 } 4884 4885 void gap_set_allow_role_switch(bool allow_role_switch){ 4886 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4887 } 4888 4889 uint8_t hci_get_allow_role_switch(void){ 4890 return hci_stack->allow_role_switch; 4891 } 4892 4893 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4894 hci_stack->link_supervision_timeout = link_supervision_timeout; 4895 } 4896 4897 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4898 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4899 } 4900 4901 uint16_t hci_automatic_flush_timeout(void){ 4902 return hci_stack->automatic_flush_timeout; 4903 } 4904 4905 void hci_disable_l2cap_timeout_check(void){ 4906 disable_l2cap_timeouts = 1; 4907 } 4908 #endif 4909 4910 #ifndef HAVE_HOST_CONTROLLER_API 4911 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4912 void hci_set_bd_addr(bd_addr_t addr){ 4913 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4914 hci_stack->custom_bd_addr_set = 1; 4915 } 4916 #endif 4917 4918 // State-Module-Driver overview 4919 // state module low-level 4920 // HCI_STATE_OFF off close 4921 // HCI_STATE_INITIALIZING, on open 4922 // HCI_STATE_WORKING, on open 4923 // HCI_STATE_HALTING, on open 4924 // HCI_STATE_SLEEPING, off/sleep close 4925 // HCI_STATE_FALLING_ASLEEP on open 4926 4927 static int hci_power_control_on(void){ 4928 4929 // power on 4930 int err = 0; 4931 if (hci_stack->control && hci_stack->control->on){ 4932 err = (*hci_stack->control->on)(); 4933 } 4934 if (err){ 4935 log_error( "POWER_ON failed"); 4936 hci_emit_hci_open_failed(); 4937 return err; 4938 } 4939 4940 // int chipset driver 4941 if (hci_stack->chipset && hci_stack->chipset->init){ 4942 hci_stack->chipset->init(hci_stack->config); 4943 } 4944 4945 // init transport 4946 if (hci_stack->hci_transport->init){ 4947 hci_stack->hci_transport->init(hci_stack->config); 4948 } 4949 4950 // open transport 4951 err = hci_stack->hci_transport->open(); 4952 if (err){ 4953 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4954 if (hci_stack->control && hci_stack->control->off){ 4955 (*hci_stack->control->off)(); 4956 } 4957 hci_emit_hci_open_failed(); 4958 return err; 4959 } 4960 return 0; 4961 } 4962 4963 static void hci_power_control_off(void){ 4964 4965 log_info("hci_power_control_off"); 4966 4967 // close low-level device 4968 hci_stack->hci_transport->close(); 4969 4970 log_info("hci_power_control_off - hci_transport closed"); 4971 4972 // power off 4973 if (hci_stack->control && hci_stack->control->off){ 4974 (*hci_stack->control->off)(); 4975 } 4976 4977 log_info("hci_power_control_off - control closed"); 4978 4979 hci_stack->state = HCI_STATE_OFF; 4980 } 4981 4982 static void hci_power_control_sleep(void){ 4983 4984 log_info("hci_power_control_sleep"); 4985 4986 #if 0 4987 // don't close serial port during sleep 4988 4989 // close low-level device 4990 hci_stack->hci_transport->close(hci_stack->config); 4991 #endif 4992 4993 // sleep mode 4994 if (hci_stack->control && hci_stack->control->sleep){ 4995 (*hci_stack->control->sleep)(); 4996 } 4997 4998 hci_stack->state = HCI_STATE_SLEEPING; 4999 } 5000 5001 static int hci_power_control_wake(void){ 5002 5003 log_info("hci_power_control_wake"); 5004 5005 // wake on 5006 if (hci_stack->control && hci_stack->control->wake){ 5007 (*hci_stack->control->wake)(); 5008 } 5009 5010 #if 0 5011 // open low-level device 5012 int err = hci_stack->hci_transport->open(hci_stack->config); 5013 if (err){ 5014 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5015 if (hci_stack->control && hci_stack->control->off){ 5016 (*hci_stack->control->off)(); 5017 } 5018 hci_emit_hci_open_failed(); 5019 return err; 5020 } 5021 #endif 5022 5023 return 0; 5024 } 5025 5026 static void hci_power_enter_initializing_state(void){ 5027 // set up state machine 5028 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5029 hci_stack->hci_packet_buffer_reserved = false; 5030 hci_stack->state = HCI_STATE_INITIALIZING; 5031 5032 #ifndef HAVE_HOST_CONTROLLER_API 5033 if (hci_stack->chipset_pre_init) { 5034 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5035 } else 5036 #endif 5037 { 5038 hci_stack->substate = HCI_INIT_SEND_RESET; 5039 } 5040 } 5041 5042 static void hci_power_enter_halting_state(void){ 5043 #ifdef ENABLE_BLE 5044 // drop entries scheduled for removal, mark others for re-adding 5045 btstack_linked_list_iterator_t it; 5046 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5047 while (btstack_linked_list_iterator_has_next(&it)){ 5048 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5049 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5050 btstack_linked_list_iterator_remove(&it); 5051 btstack_memory_whitelist_entry_free(entry); 5052 } else { 5053 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5054 } 5055 } 5056 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5057 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5058 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5059 while (btstack_linked_list_iterator_has_next(&it)){ 5060 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5061 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5062 btstack_linked_list_iterator_remove(&it); 5063 btstack_memory_periodic_advertiser_list_entry_free(entry); 5064 } else { 5065 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5066 continue; 5067 } 5068 } 5069 #endif 5070 #endif 5071 // see hci_run 5072 hci_stack->state = HCI_STATE_HALTING; 5073 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5074 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5075 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5076 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5077 btstack_run_loop_add_timer(&hci_stack->timeout); 5078 } 5079 5080 // returns error 5081 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5082 int err; 5083 switch (power_mode){ 5084 case HCI_POWER_ON: 5085 err = hci_power_control_on(); 5086 if (err != 0) { 5087 log_error("hci_power_control_on() error %d", err); 5088 return err; 5089 } 5090 hci_power_enter_initializing_state(); 5091 break; 5092 case HCI_POWER_OFF: 5093 // do nothing 5094 break; 5095 case HCI_POWER_SLEEP: 5096 // do nothing (with SLEEP == OFF) 5097 break; 5098 default: 5099 btstack_assert(false); 5100 break; 5101 } 5102 return ERROR_CODE_SUCCESS; 5103 } 5104 5105 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5106 switch (power_mode){ 5107 case HCI_POWER_ON: 5108 // do nothing 5109 break; 5110 case HCI_POWER_OFF: 5111 // no connections yet, just turn it off 5112 hci_power_control_off(); 5113 break; 5114 case HCI_POWER_SLEEP: 5115 // no connections yet, just turn it off 5116 hci_power_control_sleep(); 5117 break; 5118 default: 5119 btstack_assert(false); 5120 break; 5121 } 5122 return ERROR_CODE_SUCCESS; 5123 } 5124 5125 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5126 switch (power_mode){ 5127 case HCI_POWER_ON: 5128 // do nothing 5129 break; 5130 case HCI_POWER_OFF: 5131 hci_power_enter_halting_state(); 5132 break; 5133 case HCI_POWER_SLEEP: 5134 // see hci_run 5135 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5136 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5137 break; 5138 default: 5139 btstack_assert(false); 5140 break; 5141 } 5142 return ERROR_CODE_SUCCESS; 5143 } 5144 5145 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5146 switch (power_mode){ 5147 case HCI_POWER_ON: 5148 hci_power_enter_initializing_state(); 5149 break; 5150 case HCI_POWER_OFF: 5151 // do nothing 5152 break; 5153 case HCI_POWER_SLEEP: 5154 // see hci_run 5155 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5156 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5157 break; 5158 default: 5159 btstack_assert(false); 5160 break; 5161 } 5162 return ERROR_CODE_SUCCESS; 5163 } 5164 5165 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5166 switch (power_mode){ 5167 case HCI_POWER_ON: 5168 hci_power_enter_initializing_state(); 5169 break; 5170 case HCI_POWER_OFF: 5171 hci_power_enter_halting_state(); 5172 break; 5173 case HCI_POWER_SLEEP: 5174 // do nothing 5175 break; 5176 default: 5177 btstack_assert(false); 5178 break; 5179 } 5180 return ERROR_CODE_SUCCESS; 5181 } 5182 5183 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5184 int err; 5185 switch (power_mode){ 5186 case HCI_POWER_ON: 5187 err = hci_power_control_wake(); 5188 if (err) return err; 5189 hci_power_enter_initializing_state(); 5190 break; 5191 case HCI_POWER_OFF: 5192 hci_power_enter_halting_state(); 5193 break; 5194 case HCI_POWER_SLEEP: 5195 // do nothing 5196 break; 5197 default: 5198 btstack_assert(false); 5199 break; 5200 } 5201 return ERROR_CODE_SUCCESS; 5202 } 5203 5204 int hci_power_control(HCI_POWER_MODE power_mode){ 5205 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5206 btstack_run_loop_remove_timer(&hci_stack->timeout); 5207 int err = 0; 5208 switch (hci_stack->state){ 5209 case HCI_STATE_OFF: 5210 err = hci_power_control_state_off(power_mode); 5211 break; 5212 case HCI_STATE_INITIALIZING: 5213 err = hci_power_control_state_initializing(power_mode); 5214 break; 5215 case HCI_STATE_WORKING: 5216 err = hci_power_control_state_working(power_mode); 5217 break; 5218 case HCI_STATE_HALTING: 5219 err = hci_power_control_state_halting(power_mode); 5220 break; 5221 case HCI_STATE_FALLING_ASLEEP: 5222 err = hci_power_control_state_falling_asleep(power_mode); 5223 break; 5224 case HCI_STATE_SLEEPING: 5225 err = hci_power_control_state_sleeping(power_mode); 5226 break; 5227 default: 5228 btstack_assert(false); 5229 break; 5230 } 5231 if (err != 0){ 5232 return err; 5233 } 5234 5235 // create internal event 5236 hci_emit_state(); 5237 5238 // trigger next/first action 5239 hci_run(); 5240 5241 return 0; 5242 } 5243 5244 5245 static void hci_halting_run(void) { 5246 5247 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5248 5249 hci_connection_t *connection; 5250 #ifdef ENABLE_BLE 5251 #ifdef ENABLE_LE_PERIPHERAL 5252 bool stop_advertismenets; 5253 #endif 5254 #endif 5255 5256 switch (hci_stack->substate) { 5257 case HCI_HALTING_CLASSIC_STOP: 5258 #ifdef ENABLE_CLASSIC 5259 if (!hci_can_send_command_packet_now()) return; 5260 5261 if (hci_stack->connectable || hci_stack->discoverable){ 5262 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5263 hci_send_cmd(&hci_write_scan_enable, 0); 5264 return; 5265 } 5266 #endif 5267 /* fall through */ 5268 5269 case HCI_HALTING_LE_ADV_STOP: 5270 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5271 5272 #ifdef ENABLE_BLE 5273 #ifdef ENABLE_LE_PERIPHERAL 5274 if (!hci_can_send_command_packet_now()) return; 5275 5276 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5277 5278 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5279 if (hci_extended_advertising_supported()){ 5280 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5281 btstack_linked_list_iterator_t it; 5282 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5283 // stop all periodic advertisements and check if an extended set is active 5284 while (btstack_linked_list_iterator_has_next(&it)){ 5285 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5286 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5287 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5288 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5289 return; 5290 } 5291 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5292 stop_advertismenets = true; 5293 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5294 } 5295 } 5296 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5297 if (stop_advertismenets){ 5298 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5299 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5300 return; 5301 } 5302 } else 5303 #else /* ENABLE_LE_PERIPHERAL */ 5304 { 5305 if (stop_advertismenets) { 5306 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5307 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5308 return; 5309 } 5310 } 5311 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5312 #endif /* ENABLE_LE_PERIPHERAL */ 5313 #endif /* ENABLE_BLE */ 5314 5315 /* fall through */ 5316 5317 case HCI_HALTING_LE_SCAN_STOP: 5318 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5319 if (!hci_can_send_command_packet_now()) return; 5320 5321 #ifdef ENABLE_BLE 5322 #ifdef ENABLE_LE_CENTRAL 5323 if (hci_stack->le_scanning_active){ 5324 hci_le_scan_stop(); 5325 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5326 return; 5327 } 5328 #endif 5329 #endif 5330 5331 /* fall through */ 5332 5333 case HCI_HALTING_DISCONNECT_ALL: 5334 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5335 if (!hci_can_send_command_packet_now()) return; 5336 5337 // close all open connections 5338 connection = (hci_connection_t *) hci_stack->connections; 5339 if (connection) { 5340 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5341 5342 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5343 5344 // check state 5345 switch(connection->state) { 5346 case SENT_DISCONNECT: 5347 case RECEIVED_DISCONNECTION_COMPLETE: 5348 // wait until connection is gone 5349 return; 5350 default: 5351 break; 5352 } 5353 5354 // finally, send the disconnect command 5355 connection->state = SENT_DISCONNECT; 5356 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5357 return; 5358 } 5359 5360 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5361 // stop BIGs and BIG Syncs 5362 if (hci_stack->le_audio_bigs != NULL){ 5363 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5364 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5365 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5366 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5367 return; 5368 } 5369 if (hci_stack->le_audio_big_syncs != NULL){ 5370 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5371 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5372 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5373 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5374 return; 5375 } 5376 #endif 5377 5378 btstack_run_loop_remove_timer(&hci_stack->timeout); 5379 5380 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5381 log_info("HCI_STATE_HALTING: wait 50 ms"); 5382 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5383 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5384 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5385 btstack_run_loop_add_timer(&hci_stack->timeout); 5386 break; 5387 5388 case HCI_HALTING_W4_CLOSE_TIMER: 5389 // keep waiting 5390 break; 5391 5392 case HCI_HALTING_CLOSE: 5393 // close left over connections (that had not been properly closed before) 5394 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5395 hci_discard_connections(); 5396 5397 log_info("HCI_STATE_HALTING, calling off"); 5398 5399 // switch mode 5400 hci_power_control_off(); 5401 5402 log_info("HCI_STATE_HALTING, emitting state"); 5403 hci_emit_state(); 5404 log_info("HCI_STATE_HALTING, done"); 5405 break; 5406 5407 default: 5408 break; 5409 } 5410 }; 5411 5412 static void hci_falling_asleep_run(void){ 5413 hci_connection_t * connection; 5414 switch(hci_stack->substate) { 5415 case HCI_FALLING_ASLEEP_DISCONNECT: 5416 log_info("HCI_STATE_FALLING_ASLEEP"); 5417 // close all open connections 5418 connection = (hci_connection_t *) hci_stack->connections; 5419 if (connection){ 5420 5421 // send disconnect 5422 if (!hci_can_send_command_packet_now()) return; 5423 5424 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5425 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5426 5427 // send disconnected event right away - causes higher layer connections to get closed, too. 5428 hci_shutdown_connection(connection); 5429 return; 5430 } 5431 5432 if (hci_classic_supported()){ 5433 // disable page and inquiry scan 5434 if (!hci_can_send_command_packet_now()) return; 5435 5436 log_info("HCI_STATE_HALTING, disabling inq scans"); 5437 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5438 5439 // continue in next sub state 5440 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5441 break; 5442 } 5443 5444 /* fall through */ 5445 5446 case HCI_FALLING_ASLEEP_COMPLETE: 5447 log_info("HCI_STATE_HALTING, calling sleep"); 5448 // switch mode 5449 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5450 hci_emit_state(); 5451 break; 5452 5453 default: 5454 break; 5455 } 5456 } 5457 5458 #ifdef ENABLE_CLASSIC 5459 5460 static void hci_update_scan_enable(void){ 5461 // 2 = page scan, 1 = inq scan 5462 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5463 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5464 hci_run(); 5465 } 5466 5467 void gap_discoverable_control(uint8_t enable){ 5468 if (enable) enable = 1; // normalize argument 5469 5470 if (hci_stack->discoverable == enable){ 5471 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5472 return; 5473 } 5474 5475 hci_stack->discoverable = enable; 5476 hci_update_scan_enable(); 5477 } 5478 5479 void gap_connectable_control(uint8_t enable){ 5480 if (enable) enable = 1; // normalize argument 5481 5482 // don't emit event 5483 if (hci_stack->connectable == enable) return; 5484 5485 hci_stack->connectable = enable; 5486 hci_update_scan_enable(); 5487 } 5488 #endif 5489 5490 void gap_local_bd_addr(bd_addr_t address_buffer){ 5491 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5492 } 5493 5494 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5495 static void hci_host_num_completed_packets(void){ 5496 5497 // create packet manually as arrays are not supported and num_commands should not get reduced 5498 hci_reserve_packet_buffer(); 5499 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5500 5501 uint16_t size = 0; 5502 uint16_t num_handles = 0; 5503 packet[size++] = 0x35; 5504 packet[size++] = 0x0c; 5505 size++; // skip param len 5506 size++; // skip num handles 5507 5508 // add { handle, packets } entries 5509 btstack_linked_item_t * it; 5510 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5511 hci_connection_t * connection = (hci_connection_t *) it; 5512 if (connection->num_packets_completed){ 5513 little_endian_store_16(packet, size, connection->con_handle); 5514 size += 2; 5515 little_endian_store_16(packet, size, connection->num_packets_completed); 5516 size += 2; 5517 // 5518 num_handles++; 5519 connection->num_packets_completed = 0; 5520 } 5521 } 5522 5523 packet[2] = size - 3; 5524 packet[3] = num_handles; 5525 5526 hci_stack->host_completed_packets = 0; 5527 5528 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5529 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5530 5531 // release packet buffer for synchronous transport implementations 5532 if (hci_transport_synchronous()){ 5533 hci_release_packet_buffer(); 5534 hci_emit_transport_packet_sent(); 5535 } 5536 } 5537 #endif 5538 5539 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5540 UNUSED(ds); 5541 hci_stack->substate = HCI_HALTING_CLOSE; 5542 hci_halting_run(); 5543 } 5544 5545 static bool hci_run_acl_fragments(void){ 5546 if (hci_stack->acl_fragmentation_total_size > 0u) { 5547 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5548 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5549 if (connection) { 5550 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5551 hci_send_acl_packet_fragments(connection); 5552 return true; 5553 } 5554 } else { 5555 // connection gone -> discard further fragments 5556 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5557 hci_stack->acl_fragmentation_total_size = 0; 5558 hci_stack->acl_fragmentation_pos = 0; 5559 } 5560 } 5561 return false; 5562 } 5563 5564 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5565 static bool hci_run_iso_fragments(void){ 5566 if (hci_stack->iso_fragmentation_total_size > 0u) { 5567 // TODO: flow control 5568 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5569 hci_send_iso_packet_fragments(); 5570 return true; 5571 } 5572 } 5573 return false; 5574 } 5575 #endif 5576 5577 #ifdef ENABLE_CLASSIC 5578 5579 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5580 static bool hci_classic_operation_active(void) { 5581 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5582 return true; 5583 } 5584 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5585 return true; 5586 } 5587 btstack_linked_item_t * it; 5588 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5589 hci_connection_t *connection = (hci_connection_t *) it; 5590 switch (connection->state) { 5591 case SENT_CREATE_CONNECTION: 5592 case SENT_CANCEL_CONNECTION: 5593 case SENT_DISCONNECT: 5594 return true; 5595 default: 5596 break; 5597 } 5598 } 5599 return false; 5600 } 5601 #endif 5602 5603 static bool hci_run_general_gap_classic(void){ 5604 5605 // assert stack is working and classic is active 5606 if (hci_classic_supported() == false) return false; 5607 if (hci_stack->state != HCI_STATE_WORKING) return false; 5608 5609 // decline incoming connections 5610 if (hci_stack->decline_reason){ 5611 uint8_t reason = hci_stack->decline_reason; 5612 hci_stack->decline_reason = 0; 5613 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5614 return true; 5615 } 5616 5617 if (hci_stack->gap_tasks_classic != 0){ 5618 hci_run_gap_tasks_classic(); 5619 return true; 5620 } 5621 5622 // start/stop inquiry 5623 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5624 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5625 if (hci_classic_operation_active() == false) 5626 #endif 5627 { 5628 uint8_t duration = hci_stack->inquiry_state; 5629 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5630 if (hci_stack->inquiry_max_period_length != 0){ 5631 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); 5632 } else { 5633 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5634 } 5635 return true; 5636 } 5637 } 5638 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5639 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5640 hci_send_cmd(&hci_inquiry_cancel); 5641 return true; 5642 } 5643 5644 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5645 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5646 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5647 return true; 5648 } 5649 5650 // remote name request 5651 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5652 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5653 if (hci_classic_operation_active() == false) 5654 #endif 5655 { 5656 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5657 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5658 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5659 return true; 5660 } 5661 } 5662 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5663 // Local OOB data 5664 if (hci_stack->classic_read_local_oob_data){ 5665 hci_stack->classic_read_local_oob_data = false; 5666 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5667 hci_send_cmd(&hci_read_local_extended_oob_data); 5668 } else { 5669 hci_send_cmd(&hci_read_local_oob_data); 5670 } 5671 } 5672 #endif 5673 // pairing 5674 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5675 uint8_t state = hci_stack->gap_pairing_state; 5676 uint8_t pin_code[16]; 5677 switch (state){ 5678 case GAP_PAIRING_STATE_SEND_PIN: 5679 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5680 memset(pin_code, 0, 16); 5681 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5682 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5683 break; 5684 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5685 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5686 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5687 break; 5688 case GAP_PAIRING_STATE_SEND_PASSKEY: 5689 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5690 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5691 break; 5692 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5693 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5694 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5695 break; 5696 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5697 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5698 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5699 break; 5700 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5701 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5702 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5703 break; 5704 default: 5705 break; 5706 } 5707 return true; 5708 } 5709 return false; 5710 } 5711 #endif 5712 5713 #ifdef ENABLE_BLE 5714 5715 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5716 static uint8_t hci_le_num_phys(uint8_t phys){ 5717 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5718 btstack_assert(phys); 5719 return num_bits_set[phys]; 5720 } 5721 #endif 5722 5723 #ifdef ENABLE_LE_CENTRAL 5724 static void hci_le_scan_stop(void){ 5725 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5726 if (hci_extended_advertising_supported()) { 5727 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5728 } else 5729 #endif 5730 { 5731 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5732 } 5733 } 5734 5735 static void 5736 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5737 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5738 if (hci_extended_advertising_supported()) { 5739 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5740 uint16_t le_connection_scan_interval[3]; 5741 uint16_t le_connection_scan_window[3]; 5742 uint16_t le_connection_interval_min[3]; 5743 uint16_t le_connection_interval_max[3]; 5744 uint16_t le_connection_latency[3]; 5745 uint16_t le_supervision_timeout[3]; 5746 uint16_t le_minimum_ce_length[3]; 5747 uint16_t le_maximum_ce_length[3]; 5748 5749 uint8_t i; 5750 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5751 for (i=0;i<num_phys;i++){ 5752 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5753 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5754 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5755 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5756 le_connection_latency[i] = hci_stack->le_connection_latency; 5757 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5758 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5759 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5760 } 5761 hci_send_cmd(&hci_le_extended_create_connection, 5762 initiator_filter_policy, 5763 hci_stack->le_connection_own_addr_type, // our addr type: 5764 address_type, // peer address type 5765 address, // peer bd addr 5766 hci_stack->le_connection_phys, // initiating PHY 5767 le_connection_scan_interval, // conn scan interval 5768 le_connection_scan_window, // conn scan windows 5769 le_connection_interval_min, // conn interval min 5770 le_connection_interval_max, // conn interval max 5771 le_connection_latency, // conn latency 5772 le_supervision_timeout, // conn latency 5773 le_minimum_ce_length, // min ce length 5774 le_maximum_ce_length // max ce length 5775 ); 5776 } else 5777 #endif 5778 { 5779 hci_send_cmd(&hci_le_create_connection, 5780 hci_stack->le_connection_scan_interval, // conn scan interval 5781 hci_stack->le_connection_scan_window, // conn scan windows 5782 initiator_filter_policy, // don't use whitelist 5783 address_type, // peer address type 5784 address, // peer bd addr 5785 hci_stack->le_connection_own_addr_type, // our addr type: 5786 hci_stack->le_connection_interval_min, // conn interval min 5787 hci_stack->le_connection_interval_max, // conn interval max 5788 hci_stack->le_connection_latency, // conn latency 5789 hci_stack->le_supervision_timeout, // conn latency 5790 hci_stack->le_minimum_ce_length, // min ce length 5791 hci_stack->le_maximum_ce_length // max ce length 5792 ); 5793 } 5794 } 5795 #endif 5796 5797 #ifdef ENABLE_LE_PERIPHERAL 5798 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5799 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5800 uint8_t operation = 0; 5801 if (pos == 0){ 5802 // first fragment or complete data 5803 operation |= 1; 5804 } 5805 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5806 // last fragment or complete data 5807 operation |= 2; 5808 } 5809 return operation; 5810 } 5811 #endif 5812 #endif 5813 5814 static bool hci_run_general_gap_le(void){ 5815 5816 btstack_linked_list_iterator_t lit; 5817 5818 // Phase 1: collect what to stop 5819 5820 #ifdef ENABLE_LE_CENTRAL 5821 bool scanning_stop = false; 5822 bool connecting_stop = false; 5823 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5824 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5825 bool periodic_sync_stop = false; 5826 #endif 5827 #endif 5828 #endif 5829 5830 #ifdef ENABLE_LE_PERIPHERAL 5831 bool advertising_stop = false; 5832 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5833 le_advertising_set_t * advertising_stop_set = NULL; 5834 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5835 bool periodic_advertising_stop = false; 5836 #endif 5837 #endif 5838 #endif 5839 5840 // check if own address changes 5841 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 5842 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 5843 5844 // check if whitelist needs modification 5845 bool whitelist_modification_pending = false; 5846 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5847 while (btstack_linked_list_iterator_has_next(&lit)){ 5848 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5849 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5850 whitelist_modification_pending = true; 5851 break; 5852 } 5853 } 5854 5855 // check if resolving list needs modification 5856 bool resolving_list_modification_pending = false; 5857 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5858 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5859 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5860 resolving_list_modification_pending = true; 5861 } 5862 #endif 5863 5864 #ifdef ENABLE_LE_CENTRAL 5865 5866 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5867 // check if periodic advertiser list needs modification 5868 bool periodic_list_modification_pending = false; 5869 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5870 while (btstack_linked_list_iterator_has_next(&lit)){ 5871 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5872 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5873 periodic_list_modification_pending = true; 5874 break; 5875 } 5876 } 5877 #endif 5878 5879 // scanning control 5880 if (hci_stack->le_scanning_active) { 5881 // stop if: 5882 // - parameter change required 5883 // - it's disabled 5884 // - whitelist change required but used for scanning 5885 // - resolving list modified 5886 // - own address changes 5887 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5888 if ((hci_stack->le_scanning_param_update) || 5889 !hci_stack->le_scanning_enabled || 5890 (scanning_uses_whitelist && whitelist_modification_pending) || 5891 resolving_list_modification_pending || 5892 random_address_change){ 5893 5894 scanning_stop = true; 5895 } 5896 } 5897 5898 // connecting control 5899 bool connecting_with_whitelist; 5900 switch (hci_stack->le_connecting_state){ 5901 case LE_CONNECTING_DIRECT: 5902 case LE_CONNECTING_WHITELIST: 5903 // stop connecting if: 5904 // - connecting uses white and whitelist modification pending 5905 // - if it got disabled 5906 // - resolving list modified 5907 // - own address changes 5908 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5909 if ((connecting_with_whitelist && whitelist_modification_pending) || 5910 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5911 resolving_list_modification_pending || 5912 random_address_change) { 5913 5914 connecting_stop = true; 5915 } 5916 break; 5917 default: 5918 break; 5919 } 5920 5921 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5922 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5923 // periodic sync control 5924 bool sync_with_advertiser_list; 5925 switch(hci_stack->le_periodic_sync_state){ 5926 case LE_CONNECTING_DIRECT: 5927 case LE_CONNECTING_WHITELIST: 5928 // stop sync if: 5929 // - sync with advertiser list and advertiser list modification pending 5930 // - if it got disabled 5931 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5932 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5933 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5934 periodic_sync_stop = true; 5935 } 5936 break; 5937 default: 5938 break; 5939 } 5940 #endif 5941 #endif 5942 5943 #endif /* ENABLE_LE_CENTRAL */ 5944 5945 #ifdef ENABLE_LE_PERIPHERAL 5946 // le advertisement control 5947 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5948 // stop if: 5949 // - parameter change required 5950 // - random address used in advertising and changes 5951 // - it's disabled 5952 // - whitelist change required but used for advertisement filter policy 5953 // - resolving list modified 5954 // - own address changes 5955 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5956 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5957 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5958 if (advertising_change || 5959 (advertising_uses_random_address && random_address_change) || 5960 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5961 (advertising_uses_whitelist && whitelist_modification_pending) || 5962 resolving_list_modification_pending || 5963 random_address_change) { 5964 5965 advertising_stop = true; 5966 } 5967 } 5968 5969 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5970 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5971 btstack_linked_list_iterator_t it; 5972 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5973 while (btstack_linked_list_iterator_has_next(&it)){ 5974 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5975 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5976 // stop if: 5977 // - parameter change required 5978 // - random address used in connectable advertising and changes 5979 // - it's disabled 5980 // - whitelist change required but used for advertisement filter policy 5981 // - resolving list modified 5982 // - own address changes 5983 // - advertisement set will be removed 5984 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5985 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5986 bool advertising_uses_random_address = 5987 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5988 advertising_connectable; 5989 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5990 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5991 bool advertising_set_random_address_change = 5992 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5993 bool advertising_set_will_be_removed = 5994 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5995 if (advertising_parameter_change || 5996 (advertising_uses_random_address && advertising_set_random_address_change) || 5997 (advertising_enabled == false) || 5998 (advertising_uses_whitelist && whitelist_modification_pending) || 5999 resolving_list_modification_pending || 6000 advertising_set_will_be_removed) { 6001 6002 advertising_stop = true; 6003 advertising_stop_set = advertising_set; 6004 break; 6005 } 6006 } 6007 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6008 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6009 // stop if: 6010 // - it's disabled 6011 // - parameter change required 6012 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6013 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6014 if ((periodic_enabled == false) || periodic_parameter_change){ 6015 periodic_advertising_stop = true; 6016 advertising_stop_set = advertising_set; 6017 } 6018 } 6019 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6020 } 6021 } 6022 #endif 6023 6024 #endif 6025 6026 6027 // Phase 2: stop everything that should be off during modifications 6028 6029 6030 // 2.1 Outgoing connection 6031 #ifdef ENABLE_LE_CENTRAL 6032 if (connecting_stop){ 6033 hci_send_cmd(&hci_le_create_connection_cancel); 6034 return true; 6035 } 6036 #endif 6037 6038 // 2.2 Scanning 6039 #ifdef ENABLE_LE_CENTRAL 6040 if (scanning_stop){ 6041 hci_stack->le_scanning_active = false; 6042 hci_le_scan_stop(); 6043 return true; 6044 } 6045 6046 // 2.3 Periodic Sync 6047 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6048 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6049 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6050 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6051 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6052 return true; 6053 } 6054 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6055 if (periodic_sync_stop){ 6056 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6057 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6058 return true; 6059 } 6060 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6061 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6062 #endif /* ENABLE_LE_CENTRAL */ 6063 6064 // 2.4 Advertising: legacy, extended, periodic 6065 #ifdef ENABLE_LE_PERIPHERAL 6066 if (advertising_stop){ 6067 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6068 if (hci_extended_advertising_supported()) { 6069 uint8_t advertising_stop_handle; 6070 if (advertising_stop_set != NULL){ 6071 advertising_stop_handle = advertising_stop_set->advertising_handle; 6072 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6073 } else { 6074 advertising_stop_handle = 0; 6075 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6076 } 6077 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6078 const uint16_t durations[] = { 0 }; 6079 const uint16_t max_events[] = { 0 }; 6080 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6081 } else 6082 #endif 6083 { 6084 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6085 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6086 } 6087 return true; 6088 } 6089 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6090 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6091 if (periodic_advertising_stop){ 6092 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6093 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6094 return true; 6095 } 6096 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6097 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6098 #endif /* ENABLE_LE_PERIPHERAL */ 6099 6100 6101 // Phase 3: modify 6102 6103 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6104 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6105 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6106 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6107 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6108 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6109 #endif 6110 return true; 6111 } 6112 6113 #ifdef ENABLE_LE_CENTRAL 6114 if (hci_stack->le_scanning_param_update){ 6115 hci_stack->le_scanning_param_update = false; 6116 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6117 if (hci_extended_advertising_supported()){ 6118 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6119 uint8_t scan_types[2]; 6120 uint16_t scan_intervals[2]; 6121 uint16_t scan_windows[2]; 6122 6123 uint8_t i; 6124 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6125 for (i=0;i<num_phys;i++){ 6126 scan_types[i] = hci_stack->le_scan_type; 6127 scan_intervals[i] = hci_stack->le_scan_interval; 6128 scan_windows[i] = hci_stack->le_scan_window; 6129 } 6130 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6131 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6132 } else 6133 #endif 6134 { 6135 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6136 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6137 } 6138 return true; 6139 } 6140 #endif 6141 6142 #ifdef ENABLE_LE_PERIPHERAL 6143 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6144 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6145 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6146 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6147 if (hci_extended_advertising_supported()){ 6148 // map advertisment type to advertising event properties 6149 uint16_t adv_event_properties = 0; 6150 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6151 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6152 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6153 } 6154 hci_stack->le_advertising_set_in_current_command = 0; 6155 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6156 0, 6157 adv_event_properties, 6158 hci_stack->le_advertisements_interval_min, 6159 hci_stack->le_advertisements_interval_max, 6160 hci_stack->le_advertisements_channel_map, 6161 hci_stack->le_advertisements_own_addr_type, 6162 hci_stack->le_advertisements_direct_address_type, 6163 hci_stack->le_advertisements_direct_address, 6164 hci_stack->le_advertisements_filter_policy, 6165 0x7f, // tx power: no preference 6166 0x01, // primary adv phy: LE 1M 6167 0, // secondary adv max skip 6168 0, // secondary adv phy 6169 0, // adv sid 6170 0 // scan request notification 6171 ); 6172 } else 6173 #endif 6174 { 6175 hci_send_cmd(&hci_le_set_advertising_parameters, 6176 hci_stack->le_advertisements_interval_min, 6177 hci_stack->le_advertisements_interval_max, 6178 hci_stack->le_advertisements_type, 6179 hci_stack->le_advertisements_own_addr_type, 6180 hci_stack->le_advertisements_direct_address_type, 6181 hci_stack->le_advertisements_direct_address, 6182 hci_stack->le_advertisements_channel_map, 6183 hci_stack->le_advertisements_filter_policy); 6184 } 6185 return true; 6186 } 6187 6188 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6189 // assumption: only set if extended advertising is supported 6190 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6191 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6192 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6193 return true; 6194 } 6195 #endif 6196 6197 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6198 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6199 uint8_t adv_data_clean[31]; 6200 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6201 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6202 hci_stack->le_advertisements_data_len); 6203 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6204 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6205 if (hci_extended_advertising_supported()){ 6206 hci_stack->le_advertising_set_in_current_command = 0; 6207 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6208 } else 6209 #endif 6210 { 6211 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6212 } 6213 return true; 6214 } 6215 6216 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6217 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6218 uint8_t scan_data_clean[31]; 6219 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6220 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6221 hci_stack->le_scan_response_data_len); 6222 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6223 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6224 if (hci_extended_advertising_supported()){ 6225 hci_stack->le_advertising_set_in_current_command = 0; 6226 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6227 } else 6228 #endif 6229 { 6230 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6231 } 6232 return true; 6233 } 6234 6235 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6236 if (hci_extended_advertising_supported()) { 6237 btstack_linked_list_iterator_t it; 6238 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6239 while (btstack_linked_list_iterator_has_next(&it)){ 6240 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6241 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6242 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6243 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6244 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6245 return true; 6246 } 6247 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6248 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6249 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6250 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6251 advertising_set->advertising_handle, 6252 advertising_set->extended_params.advertising_event_properties, 6253 advertising_set->extended_params.primary_advertising_interval_min, 6254 advertising_set->extended_params.primary_advertising_interval_max, 6255 advertising_set->extended_params.primary_advertising_channel_map, 6256 advertising_set->extended_params.own_address_type, 6257 advertising_set->extended_params.peer_address_type, 6258 advertising_set->extended_params.peer_address, 6259 advertising_set->extended_params.advertising_filter_policy, 6260 advertising_set->extended_params.advertising_tx_power, 6261 advertising_set->extended_params.primary_advertising_phy, 6262 advertising_set->extended_params.secondary_advertising_max_skip, 6263 advertising_set->extended_params.secondary_advertising_phy, 6264 advertising_set->extended_params.advertising_sid, 6265 advertising_set->extended_params.scan_request_notification_enable 6266 ); 6267 return true; 6268 } 6269 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6270 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6271 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6272 return true; 6273 } 6274 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6275 uint16_t pos = advertising_set->adv_data_pos; 6276 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6277 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6278 if ((operation & 0x02) != 0){ 6279 // last fragment or complete data 6280 operation |= 2; 6281 advertising_set->adv_data_pos = 0; 6282 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6283 } else { 6284 advertising_set->adv_data_pos += data_to_upload; 6285 } 6286 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6287 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6288 return true; 6289 } 6290 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6291 uint16_t pos = advertising_set->scan_data_pos; 6292 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6293 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6294 if ((operation & 0x02) != 0){ 6295 advertising_set->scan_data_pos = 0; 6296 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6297 } else { 6298 advertising_set->scan_data_pos += data_to_upload; 6299 } 6300 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6301 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6302 return true; 6303 } 6304 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6305 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6306 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6307 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6308 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6309 advertising_set->advertising_handle, 6310 advertising_set->periodic_params.periodic_advertising_interval_min, 6311 advertising_set->periodic_params.periodic_advertising_interval_max, 6312 advertising_set->periodic_params.periodic_advertising_properties); 6313 return true; 6314 } 6315 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6316 uint16_t pos = advertising_set->periodic_data_pos; 6317 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6318 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6319 if ((operation & 0x02) != 0){ 6320 // last fragment or complete data 6321 operation |= 2; 6322 advertising_set->periodic_data_pos = 0; 6323 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6324 } else { 6325 advertising_set->periodic_data_pos += data_to_upload; 6326 } 6327 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6328 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6329 return true; 6330 } 6331 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6332 } 6333 } 6334 #endif 6335 6336 #endif 6337 6338 #ifdef ENABLE_LE_CENTRAL 6339 // if connect with whitelist was active and is not cancelled yet, wait until next time 6340 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6341 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6342 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6343 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6344 #endif 6345 #endif 6346 6347 // LE Whitelist Management 6348 if (whitelist_modification_pending){ 6349 // add/remove entries 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->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6354 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6355 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 6356 return true; 6357 } 6358 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6359 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6360 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6361 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6362 return true; 6363 } 6364 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 6365 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6366 btstack_memory_whitelist_entry_free(entry); 6367 } 6368 } 6369 } 6370 6371 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6372 // LE Resolving List Management 6373 if (resolving_list_supported) { 6374 uint16_t i; 6375 switch (hci_stack->le_resolving_list_state) { 6376 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6377 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6378 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6379 return true; 6380 case LE_RESOLVING_LIST_READ_SIZE: 6381 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6382 hci_send_cmd(&hci_le_read_resolving_list_size); 6383 return true; 6384 case LE_RESOLVING_LIST_SEND_CLEAR: 6385 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6386 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6387 sizeof(hci_stack->le_resolving_list_add_entries)); 6388 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6389 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6390 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6391 sizeof(hci_stack->le_resolving_list_remove_entries)); 6392 hci_send_cmd(&hci_le_clear_resolving_list); 6393 return true; 6394 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6395 // first remove old entries 6396 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6397 uint8_t offset = i >> 3; 6398 uint8_t mask = 1 << (i & 7); 6399 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6400 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6401 bd_addr_t peer_identity_addreses; 6402 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6403 sm_key_t peer_irk; 6404 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6405 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6406 6407 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6408 // trigger whitelist entry 'update' (work around for controller bug) 6409 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6410 while (btstack_linked_list_iterator_has_next(&lit)) { 6411 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6412 if (entry->address_type != peer_identity_addr_type) continue; 6413 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6414 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6415 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6416 } 6417 #endif 6418 6419 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6420 peer_identity_addreses); 6421 return true; 6422 } 6423 6424 // then add new entries 6425 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6426 uint8_t offset = i >> 3; 6427 uint8_t mask = 1 << (i & 7); 6428 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6429 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6430 bd_addr_t peer_identity_addreses; 6431 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6432 sm_key_t peer_irk; 6433 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6434 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6435 if (btstack_is_null(peer_irk, 16)) continue; 6436 const uint8_t *local_irk = gap_get_persistent_irk(); 6437 // command uses format specifier 'P' that stores 16-byte value without flip 6438 uint8_t local_irk_flipped[16]; 6439 uint8_t peer_irk_flipped[16]; 6440 reverse_128(local_irk, local_irk_flipped); 6441 reverse_128(peer_irk, peer_irk_flipped); 6442 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6443 peer_irk_flipped, local_irk_flipped); 6444 return true; 6445 } 6446 6447 // finally, set privacy mode 6448 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6449 uint8_t offset = i >> 3; 6450 uint8_t mask = 1 << (i & 7); 6451 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6452 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6453 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6454 // Network Privacy Mode is default 6455 continue; 6456 } 6457 bd_addr_t peer_identity_address; 6458 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6459 sm_key_t peer_irk; 6460 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6461 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6462 if (btstack_is_null(peer_irk, 16)) continue; 6463 // command uses format specifier 'P' that stores 16-byte value without flip 6464 uint8_t peer_irk_flipped[16]; 6465 reverse_128(peer_irk, peer_irk_flipped); 6466 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6467 return true; 6468 } 6469 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6470 break; 6471 6472 default: 6473 break; 6474 } 6475 } 6476 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6477 #endif 6478 6479 #ifdef ENABLE_LE_CENTRAL 6480 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6481 // LE Whitelist Management 6482 if (periodic_list_modification_pending){ 6483 // add/remove entries 6484 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6485 while (btstack_linked_list_iterator_has_next(&lit)){ 6486 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6487 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6488 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6489 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6490 return true; 6491 } 6492 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6493 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6494 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6495 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6496 return true; 6497 } 6498 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6499 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6500 btstack_memory_periodic_advertiser_list_entry_free(entry); 6501 } 6502 } 6503 } 6504 #endif 6505 #endif 6506 6507 #ifdef ENABLE_LE_CENTRAL 6508 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6509 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6510 if (hci_stack->le_past_set_default_params){ 6511 hci_stack->le_past_set_default_params = false; 6512 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6513 hci_stack->le_past_mode, 6514 hci_stack->le_past_skip, 6515 hci_stack->le_past_sync_timeout, 6516 hci_stack->le_past_cte_type); 6517 return true; 6518 } 6519 #endif 6520 #endif 6521 #endif 6522 6523 // post-pone all actions until stack is fully working 6524 if (hci_stack->state != HCI_STATE_WORKING) return false; 6525 6526 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6527 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6528 6529 // Phase 4: restore state 6530 6531 #ifdef ENABLE_LE_CENTRAL 6532 // re-start scanning 6533 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6534 hci_stack->le_scanning_active = true; 6535 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6536 if (hci_extended_advertising_supported()){ 6537 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6538 } else 6539 #endif 6540 { 6541 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6542 } 6543 return true; 6544 } 6545 #endif 6546 6547 #ifdef ENABLE_LE_CENTRAL 6548 // re-start connecting 6549 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6550 bd_addr_t null_addr; 6551 memset(null_addr, 0, 6); 6552 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6553 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6554 hci_send_le_create_connection(1, 0, null_addr); 6555 return true; 6556 } 6557 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6558 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6559 switch(hci_stack->le_periodic_sync_request){ 6560 case LE_CONNECTING_DIRECT: 6561 case LE_CONNECTING_WHITELIST: 6562 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6563 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6564 hci_stack->le_periodic_sync_options, 6565 hci_stack->le_periodic_sync_advertising_sid, 6566 hci_stack->le_periodic_sync_advertiser_address_type, 6567 hci_stack->le_periodic_sync_advertiser_address, 6568 hci_stack->le_periodic_sync_skip, 6569 hci_stack->le_periodic_sync_timeout, 6570 hci_stack->le_periodic_sync_cte_type); 6571 return true; 6572 default: 6573 break; 6574 } 6575 } 6576 #endif 6577 #endif 6578 6579 #ifdef ENABLE_LE_PERIPHERAL 6580 // re-start advertising 6581 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6582 // check if advertisements should be enabled given 6583 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6584 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6585 6586 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6587 if (hci_extended_advertising_supported()){ 6588 const uint8_t advertising_handles[] = { 0 }; 6589 const uint16_t durations[] = { 0 }; 6590 const uint16_t max_events[] = { 0 }; 6591 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6592 } else 6593 #endif 6594 { 6595 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6596 } 6597 return true; 6598 } 6599 6600 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6601 if (hci_extended_advertising_supported()) { 6602 btstack_linked_list_iterator_t it; 6603 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6604 while (btstack_linked_list_iterator_has_next(&it)) { 6605 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6606 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6607 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6608 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6609 const uint16_t durations[] = { advertising_set->enable_timeout }; 6610 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6611 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6612 return true; 6613 } 6614 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6615 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6616 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6617 uint8_t enable = 1; 6618 if (advertising_set->periodic_include_adi){ 6619 enable |= 2; 6620 } 6621 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6622 return true; 6623 } 6624 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6625 } 6626 } 6627 #endif 6628 #endif 6629 6630 return false; 6631 } 6632 6633 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6634 static bool hci_run_iso_tasks(void){ 6635 btstack_linked_list_iterator_t it; 6636 6637 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6638 return false; 6639 } 6640 6641 // BIG 6642 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6643 while (btstack_linked_list_iterator_has_next(&it)){ 6644 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6645 switch (big->state){ 6646 case LE_AUDIO_BIG_STATE_CREATE: 6647 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6648 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6649 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6650 hci_send_cmd(&hci_le_create_big, 6651 big->params->big_handle, 6652 big->params->advertising_handle, 6653 big->params->num_bis, 6654 big->params->sdu_interval_us, 6655 big->params->max_sdu, 6656 big->params->max_transport_latency_ms, 6657 big->params->rtn, 6658 big->params->phy, 6659 big->params->packing, 6660 big->params->framing, 6661 big->params->encryption, 6662 big->params->broadcast_code); 6663 return true; 6664 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6665 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6666 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); 6667 return true; 6668 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6669 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6670 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6671 return true; 6672 case LE_AUDIO_BIG_STATE_TERMINATE: 6673 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6674 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6675 return true; 6676 default: 6677 break; 6678 } 6679 } 6680 6681 // BIG Sync 6682 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6683 while (btstack_linked_list_iterator_has_next(&it)){ 6684 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6685 switch (big_sync->state){ 6686 case LE_AUDIO_BIG_STATE_CREATE: 6687 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6688 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6689 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6690 hci_send_cmd(&hci_le_big_create_sync, 6691 big_sync->params->big_handle, 6692 big_sync->params->sync_handle, 6693 big_sync->params->encryption, 6694 big_sync->params->broadcast_code, 6695 big_sync->params->mse, 6696 big_sync->params->big_sync_timeout_10ms, 6697 big_sync->params->num_bis, 6698 big_sync->params->bis_indices); 6699 return true; 6700 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6701 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6702 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); 6703 return true; 6704 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6705 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6706 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6707 return true; 6708 case LE_AUDIO_BIG_STATE_TERMINATE: 6709 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6710 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6711 return true; 6712 default: 6713 break; 6714 } 6715 } 6716 6717 // CIG 6718 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6719 while (btstack_linked_list_iterator_has_next(&it)) { 6720 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6721 uint8_t i; 6722 // Set CIG Parameters 6723 uint8_t cis_id[MAX_NR_CIS]; 6724 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6725 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6726 uint8_t phy_c_to_p[MAX_NR_CIS]; 6727 uint8_t phy_p_to_c[MAX_NR_CIS]; 6728 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6729 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6730 switch (cig->state) { 6731 case LE_AUDIO_CIG_STATE_CREATE: 6732 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6733 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6734 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6735 le_audio_cig_params_t * params = cig->params; 6736 for (i = 0; i < params->num_cis; i++) { 6737 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6738 cis_id[i] = cis_params->cis_id; 6739 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6740 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6741 phy_c_to_p[i] = cis_params->phy_c_to_p; 6742 phy_p_to_c[i] = cis_params->phy_p_to_c; 6743 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6744 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6745 } 6746 hci_send_cmd(&hci_le_set_cig_parameters, 6747 cig->cig_id, 6748 params->sdu_interval_c_to_p, 6749 params->sdu_interval_p_to_c, 6750 params->worst_case_sca, 6751 params->packing, 6752 params->framing, 6753 params->max_transport_latency_c_to_p, 6754 params->max_transport_latency_p_to_c, 6755 params->num_cis, 6756 cis_id, 6757 max_sdu_c_to_p, 6758 max_sdu_p_to_c, 6759 phy_c_to_p, 6760 phy_p_to_c, 6761 rtn_c_to_p, 6762 rtn_p_to_c 6763 ); 6764 return true; 6765 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6766 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6767 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6768 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6769 for (i=0;i<cig->num_cis;i++){ 6770 cig->cis_setup_active[i] = true; 6771 } 6772 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6773 return true; 6774 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6775 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6776 // find next path to setup 6777 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6778 if (cig->cis_established[cis_index] == false) { 6779 continue; 6780 } 6781 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6782 bool setup = true; 6783 if (cis_direction == 0){ 6784 // 0 - input - host to controller 6785 // we are central => central to peripheral 6786 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6787 } else { 6788 // 1 - output - controller to host 6789 // we are central => peripheral to central 6790 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6791 } 6792 if (setup){ 6793 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6794 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6795 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6796 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, 0, 0, 0, 0, 0, NULL); 6797 return true; 6798 } 6799 cig->state_vars.next_cis++; 6800 } 6801 // emit done 6802 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6803 default: 6804 break; 6805 } 6806 } 6807 6808 // CIS Accept/Reject 6809 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6810 while (btstack_linked_list_iterator_has_next(&it)) { 6811 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6812 hci_con_handle_t con_handle; 6813 switch (iso_stream->state){ 6814 case HCI_ISO_STREAM_W2_ACCEPT: 6815 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6816 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6817 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6818 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 6819 return true; 6820 case HCI_ISO_STREAM_W2_REJECT: 6821 con_handle = iso_stream->cis_handle; 6822 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6823 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6824 hci_iso_stream_finalize(iso_stream); 6825 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6826 return true; 6827 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6828 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6829 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6830 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6831 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 0, 0, 0, 0, 0, 0, 0, NULL); 6832 break; 6833 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6834 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6835 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6836 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6837 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 1, 0, 0, 0, 0, 0, 0, NULL); 6838 break; 6839 default: 6840 break; 6841 } 6842 } 6843 6844 return false; 6845 } 6846 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6847 #endif 6848 6849 static bool hci_run_general_pending_commands(void){ 6850 btstack_linked_item_t * it; 6851 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6852 hci_connection_t * connection = (hci_connection_t *) it; 6853 6854 switch(connection->state){ 6855 case SEND_CREATE_CONNECTION: 6856 switch(connection->address_type){ 6857 #ifdef ENABLE_CLASSIC 6858 case BD_ADDR_TYPE_ACL: 6859 log_info("sending hci_create_connection"); 6860 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6861 break; 6862 #endif 6863 default: 6864 #ifdef ENABLE_BLE 6865 #ifdef ENABLE_LE_CENTRAL 6866 log_info("sending hci_le_create_connection"); 6867 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6868 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6869 hci_send_le_create_connection(0, connection->address_type, connection->address); 6870 connection->state = SENT_CREATE_CONNECTION; 6871 #endif 6872 #endif 6873 break; 6874 } 6875 return true; 6876 6877 #ifdef ENABLE_CLASSIC 6878 case RECEIVED_CONNECTION_REQUEST: 6879 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6880 log_info("sending hci_accept_connection_request"); 6881 connection->state = ACCEPTED_CONNECTION_REQUEST; 6882 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6883 return true; 6884 } 6885 break; 6886 #endif 6887 case SEND_DISCONNECT: 6888 connection->state = SENT_DISCONNECT; 6889 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6890 return true; 6891 6892 default: 6893 break; 6894 } 6895 6896 // no further commands if connection is about to get shut down 6897 if (connection->state == SENT_DISCONNECT) continue; 6898 6899 #ifdef ENABLE_CLASSIC 6900 6901 // Handling link key request requires remote supported features 6902 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6903 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6904 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6905 6906 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6907 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6908 if (have_link_key && security_level_sufficient){ 6909 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6910 } else { 6911 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6912 } 6913 return true; 6914 } 6915 6916 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6917 log_info("denying to pin request"); 6918 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6919 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6920 return true; 6921 } 6922 6923 // security assessment requires remote features 6924 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6925 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6926 hci_ssp_assess_security_on_io_cap_request(connection); 6927 // 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 6928 } 6929 6930 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6931 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6932 // set authentication requirements: 6933 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6934 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6935 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6936 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6937 authreq |= 1; 6938 } 6939 bool bonding = hci_stack->bondable; 6940 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6941 // if we have received IO Cap Response, we're in responder role 6942 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6943 if (bonding && !remote_bonding){ 6944 log_info("Remote not bonding, dropping local flag"); 6945 bonding = false; 6946 } 6947 } 6948 if (bonding){ 6949 if (connection->bonding_flags & BONDING_DEDICATED){ 6950 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6951 } else { 6952 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6953 } 6954 } 6955 uint8_t have_oob_data = 0; 6956 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6957 if (connection->classic_oob_c_192 != NULL){ 6958 have_oob_data |= 1; 6959 } 6960 if (connection->classic_oob_c_256 != NULL){ 6961 have_oob_data |= 2; 6962 } 6963 #endif 6964 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6965 return true; 6966 } 6967 6968 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6969 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6970 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6971 return true; 6972 } 6973 6974 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6975 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6976 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6977 const uint8_t zero[16] = { 0 }; 6978 const uint8_t * r_192 = zero; 6979 const uint8_t * c_192 = zero; 6980 const uint8_t * r_256 = zero; 6981 const uint8_t * c_256 = zero; 6982 // verify P-256 OOB 6983 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6984 c_256 = connection->classic_oob_c_256; 6985 if (connection->classic_oob_r_256 != NULL) { 6986 r_256 = connection->classic_oob_r_256; 6987 } 6988 } 6989 // verify P-192 OOB 6990 if ((connection->classic_oob_c_192 != NULL)) { 6991 c_192 = connection->classic_oob_c_192; 6992 if (connection->classic_oob_r_192 != NULL) { 6993 r_192 = connection->classic_oob_r_192; 6994 } 6995 } 6996 6997 // assess security 6998 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6999 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7000 if (need_level_4 && !can_reach_level_4){ 7001 log_info("Level 4 required, but not possible -> abort"); 7002 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7003 // send oob negative reply 7004 c_256 = NULL; 7005 c_192 = NULL; 7006 } 7007 7008 // Reply 7009 if (c_256 != zero) { 7010 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7011 } else if (c_192 != zero){ 7012 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7013 } else { 7014 hci_stack->classic_oob_con_handle = connection->con_handle; 7015 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7016 } 7017 return true; 7018 } 7019 #endif 7020 7021 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7022 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7023 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7024 return true; 7025 } 7026 7027 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7028 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7029 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7030 return true; 7031 } 7032 7033 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7034 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7035 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7036 return true; 7037 } 7038 7039 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7040 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7041 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7042 connection->state = SENT_DISCONNECT; 7043 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7044 return true; 7045 } 7046 7047 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7048 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7049 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7050 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7051 return true; 7052 } 7053 7054 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7055 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7056 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7057 return true; 7058 } 7059 7060 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7061 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7062 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7063 return true; 7064 } 7065 7066 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7067 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7068 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7069 return true; 7070 } 7071 7072 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7073 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7074 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7075 return true; 7076 } 7077 7078 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7079 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7080 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7081 return true; 7082 } 7083 #endif 7084 7085 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7086 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7087 #ifdef ENABLE_CLASSIC 7088 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7089 #endif 7090 if (connection->state != SENT_DISCONNECT){ 7091 connection->state = SENT_DISCONNECT; 7092 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7093 return true; 7094 } 7095 } 7096 7097 #ifdef ENABLE_CLASSIC 7098 uint16_t sniff_min_interval; 7099 switch (connection->sniff_min_interval){ 7100 case 0: 7101 break; 7102 case 0xffff: 7103 connection->sniff_min_interval = 0; 7104 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7105 return true; 7106 default: 7107 sniff_min_interval = connection->sniff_min_interval; 7108 connection->sniff_min_interval = 0; 7109 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7110 return true; 7111 } 7112 7113 if (connection->sniff_subrating_max_latency != 0xffff){ 7114 uint16_t max_latency = connection->sniff_subrating_max_latency; 7115 connection->sniff_subrating_max_latency = 0; 7116 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7117 return true; 7118 } 7119 7120 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7121 uint8_t service_type = (uint8_t) connection->qos_service_type; 7122 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7123 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); 7124 return true; 7125 } 7126 7127 if (connection->request_role != HCI_ROLE_INVALID){ 7128 hci_role_t role = connection->request_role; 7129 connection->request_role = HCI_ROLE_INVALID; 7130 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7131 return true; 7132 } 7133 #endif 7134 7135 if (connection->gap_connection_tasks != 0){ 7136 #ifdef ENABLE_CLASSIC 7137 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7138 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7139 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7140 return true; 7141 } 7142 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7143 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7144 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7145 return true; 7146 } 7147 #endif 7148 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7149 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7150 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7151 return true; 7152 } 7153 #ifdef ENABLE_BLE 7154 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7155 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7156 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7157 return true; 7158 } 7159 #endif 7160 } 7161 7162 #ifdef ENABLE_BLE 7163 switch (connection->le_con_parameter_update_state){ 7164 // response to L2CAP CON PARAMETER UPDATE REQUEST 7165 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7166 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7167 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7168 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7169 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7170 return true; 7171 case CON_PARAMETER_UPDATE_REPLY: 7172 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7173 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7174 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7175 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7176 return true; 7177 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7178 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7179 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7180 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7181 return true; 7182 default: 7183 break; 7184 } 7185 if (connection->le_phy_update_all_phys != 0xffu){ 7186 uint8_t all_phys = connection->le_phy_update_all_phys; 7187 connection->le_phy_update_all_phys = 0xff; 7188 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); 7189 return true; 7190 } 7191 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7192 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7193 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7194 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7195 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7196 return true; 7197 } 7198 #endif 7199 #endif 7200 } 7201 return false; 7202 } 7203 7204 static void hci_run(void){ 7205 7206 // stack state sub statemachines 7207 switch (hci_stack->state) { 7208 case HCI_STATE_INITIALIZING: 7209 hci_initializing_run(); 7210 break; 7211 case HCI_STATE_HALTING: 7212 hci_halting_run(); 7213 break; 7214 case HCI_STATE_FALLING_ASLEEP: 7215 hci_falling_asleep_run(); 7216 break; 7217 default: 7218 break; 7219 } 7220 7221 // allow to run after initialization to working transition 7222 if (hci_stack->state != HCI_STATE_WORKING){ 7223 return; 7224 } 7225 7226 bool done; 7227 7228 // send continuation fragments first, as they block the prepared packet buffer 7229 done = hci_run_acl_fragments(); 7230 if (done) return; 7231 7232 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7233 done = hci_run_iso_fragments(); 7234 if (done) return; 7235 #endif 7236 7237 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7238 // send host num completed packets next as they don't require num_cmd_packets > 0 7239 if (!hci_can_send_comand_packet_transport()) return; 7240 if (hci_stack->host_completed_packets){ 7241 hci_host_num_completed_packets(); 7242 return; 7243 } 7244 #endif 7245 7246 if (!hci_can_send_command_packet_now()) return; 7247 7248 // global/non-connection oriented commands 7249 7250 7251 #ifdef ENABLE_CLASSIC 7252 // general gap classic 7253 done = hci_run_general_gap_classic(); 7254 if (done) return; 7255 #endif 7256 7257 #ifdef ENABLE_BLE 7258 // general gap le 7259 done = hci_run_general_gap_le(); 7260 if (done) return; 7261 7262 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7263 // ISO related tasks, e.g. BIG create/terminate/sync 7264 done = hci_run_iso_tasks(); 7265 if (done) return; 7266 #endif 7267 #endif 7268 7269 // send pending HCI commands 7270 hci_run_general_pending_commands(); 7271 } 7272 7273 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7274 // house-keeping 7275 7276 #ifdef ENABLE_CLASSIC 7277 bd_addr_t addr; 7278 hci_connection_t * conn; 7279 #endif 7280 #ifdef ENABLE_LE_CENTRAL 7281 uint8_t initiator_filter_policy; 7282 #endif 7283 7284 uint16_t opcode = little_endian_read_16(packet, 0); 7285 switch (opcode) { 7286 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7287 hci_stack->loopback_mode = packet[3]; 7288 break; 7289 7290 #ifdef ENABLE_CLASSIC 7291 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7292 reverse_bd_addr(&packet[3], addr); 7293 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7294 7295 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7296 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7297 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7298 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7299 } 7300 7301 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7302 if (!conn) { 7303 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7304 if (!conn) { 7305 // notify client that alloc failed 7306 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7307 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7308 } 7309 conn->state = SEND_CREATE_CONNECTION; 7310 } 7311 7312 log_info("conn state %u", conn->state); 7313 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7314 switch (conn->state) { 7315 // if connection active exists 7316 case OPEN: 7317 // and OPEN, emit connection complete command 7318 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7319 // packet not sent to controller 7320 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7321 case RECEIVED_DISCONNECTION_COMPLETE: 7322 // create connection triggered in disconnect complete event, let's do it now 7323 break; 7324 case SEND_CREATE_CONNECTION: 7325 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7326 if (hci_classic_operation_active()){ 7327 return ERROR_CODE_SUCCESS; 7328 } 7329 #endif 7330 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7331 break; 7332 default: 7333 // otherwise, just ignore as it is already in the open process 7334 // packet not sent to controller 7335 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7336 } 7337 conn->state = SENT_CREATE_CONNECTION; 7338 7339 // track outgoing connection 7340 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7341 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7342 break; 7343 7344 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 7345 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7346 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7347 if (conn == NULL) { 7348 // neither SCO nor ACL connection for con handle 7349 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7350 } else { 7351 switch (conn->address_type){ 7352 case BD_ADDR_TYPE_ACL: 7353 // assert SCO connection does not exit 7354 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7355 return ERROR_CODE_COMMAND_DISALLOWED; 7356 } 7357 // allocate connection struct 7358 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7359 HCI_ROLE_MASTER); 7360 if (!conn) { 7361 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7362 } 7363 break; 7364 case BD_ADDR_TYPE_SCO: 7365 // update of existing SCO connection 7366 break; 7367 default: 7368 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7369 } 7370 } 7371 7372 // conn refers to hci connection of type sco now 7373 7374 conn->state = SENT_CREATE_CONNECTION; 7375 7376 // track outgoing connection to handle command status with error 7377 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7378 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7379 7380 // setup_synchronous_connection? Voice setting at offset 22 7381 // TODO: compare to current setting if sco connection already active 7382 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7383 break; 7384 7385 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7386 // get SCO connection 7387 reverse_bd_addr(&packet[3], addr); 7388 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7389 if (conn == NULL){ 7390 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7391 } 7392 7393 conn->state = ACCEPTED_CONNECTION_REQUEST; 7394 7395 // track outgoing connection to handle command status with error 7396 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7397 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7398 7399 // accept_synchronous_connection? Voice setting at offset 18 7400 // TODO: compare to current setting if sco connection already active 7401 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7402 break; 7403 #endif 7404 #endif 7405 7406 #ifdef ENABLE_BLE 7407 #ifdef ENABLE_LE_CENTRAL 7408 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7409 // white list used? 7410 initiator_filter_policy = packet[7]; 7411 switch (initiator_filter_policy) { 7412 case 0: 7413 // whitelist not used 7414 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7415 break; 7416 case 1: 7417 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7418 break; 7419 default: 7420 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7421 break; 7422 } 7423 // track outgoing connection 7424 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7425 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7426 break; 7427 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7428 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7429 // white list used? 7430 initiator_filter_policy = packet[3]; 7431 switch (initiator_filter_policy) { 7432 case 0: 7433 // whitelist not used 7434 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7435 break; 7436 case 1: 7437 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7438 break; 7439 default: 7440 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7441 break; 7442 } 7443 // track outgoing connection 7444 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7445 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7446 break; 7447 #endif 7448 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7449 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7450 break; 7451 #endif 7452 #endif /* ENABLE_BLE */ 7453 default: 7454 break; 7455 } 7456 7457 hci_stack->num_cmd_packets--; 7458 7459 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7460 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7461 if (err != 0){ 7462 return ERROR_CODE_HARDWARE_FAILURE; 7463 } 7464 return ERROR_CODE_SUCCESS; 7465 } 7466 7467 // disconnect because of security block 7468 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7469 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7470 if (!connection) return; 7471 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7472 } 7473 7474 7475 // Configure Secure Simple Pairing 7476 7477 #ifdef ENABLE_CLASSIC 7478 7479 // enable will enable SSP during init 7480 void gap_ssp_set_enable(int enable){ 7481 hci_stack->ssp_enable = enable; 7482 } 7483 7484 static int hci_local_ssp_activated(void){ 7485 return gap_ssp_supported() && hci_stack->ssp_enable; 7486 } 7487 7488 // if set, BTstack will respond to io capability request using authentication requirement 7489 void gap_ssp_set_io_capability(int io_capability){ 7490 hci_stack->ssp_io_capability = io_capability; 7491 } 7492 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7493 hci_stack->ssp_authentication_requirement = authentication_requirement; 7494 } 7495 7496 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7497 void gap_ssp_set_auto_accept(int auto_accept){ 7498 hci_stack->ssp_auto_accept = auto_accept; 7499 } 7500 7501 void gap_secure_connections_enable(bool enable){ 7502 hci_stack->secure_connections_enable = enable; 7503 } 7504 bool gap_secure_connections_active(void){ 7505 return hci_stack->secure_connections_active; 7506 } 7507 7508 #endif 7509 7510 // va_list part of hci_send_cmd 7511 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7512 if (!hci_can_send_command_packet_now()){ 7513 log_error("hci_send_cmd called but cannot send packet now"); 7514 return ERROR_CODE_COMMAND_DISALLOWED; 7515 } 7516 7517 // for HCI INITIALIZATION 7518 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7519 hci_stack->last_cmd_opcode = cmd->opcode; 7520 7521 hci_reserve_packet_buffer(); 7522 uint8_t * packet = hci_stack->hci_packet_buffer; 7523 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7524 uint8_t status = hci_send_cmd_packet(packet, size); 7525 7526 // release packet buffer on error or for synchronous transport implementations 7527 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7528 hci_release_packet_buffer(); 7529 hci_emit_transport_packet_sent(); 7530 } 7531 7532 return status; 7533 } 7534 7535 /** 7536 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7537 */ 7538 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7539 va_list argptr; 7540 va_start(argptr, cmd); 7541 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7542 va_end(argptr); 7543 return status; 7544 } 7545 7546 // Create various non-HCI events. 7547 // TODO: generalize, use table similar to hci_create_command 7548 7549 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7550 // dump packet 7551 if (dump) { 7552 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7553 } 7554 7555 // dispatch to all event handlers 7556 btstack_linked_list_iterator_t it; 7557 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7558 while (btstack_linked_list_iterator_has_next(&it)){ 7559 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7560 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7561 } 7562 } 7563 7564 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7565 if (!hci_stack->acl_packet_handler) return; 7566 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7567 } 7568 7569 #ifdef ENABLE_CLASSIC 7570 static void hci_notify_if_sco_can_send_now(void){ 7571 // notify SCO sender if waiting 7572 if (!hci_stack->sco_waiting_for_can_send_now) return; 7573 if (hci_can_send_sco_packet_now()){ 7574 hci_stack->sco_waiting_for_can_send_now = 0; 7575 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7576 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7577 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7578 } 7579 } 7580 7581 // parsing end emitting has been merged to reduce code size 7582 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7583 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7584 7585 uint8_t * eir_data; 7586 ad_context_t context; 7587 const uint8_t * name; 7588 uint8_t name_len; 7589 7590 if (size < 3) return; 7591 7592 int event_type = hci_event_packet_get_type(packet); 7593 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7594 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7595 7596 switch (event_type){ 7597 case HCI_EVENT_INQUIRY_RESULT: 7598 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7599 if (size != (3 + (num_responses * 14))) return; 7600 break; 7601 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7602 if (size != 257) return; 7603 if (num_responses != 1) return; 7604 break; 7605 default: 7606 return; 7607 } 7608 7609 // event[1] is set at the end 7610 int i; 7611 for (i=0; i<num_responses;i++){ 7612 memset(event, 0, sizeof(event)); 7613 event[0] = GAP_EVENT_INQUIRY_RESULT; 7614 uint8_t event_size = 27; // if name is not set by EIR 7615 7616 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7617 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7618 (void)memcpy(&event[9], 7619 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7620 3); // class of device 7621 (void)memcpy(&event[12], 7622 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7623 2); // clock offset 7624 7625 switch (event_type){ 7626 case HCI_EVENT_INQUIRY_RESULT: 7627 // 14,15,16,17 = 0, size 18 7628 break; 7629 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7630 event[14] = 1; 7631 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7632 // 16,17 = 0, size 18 7633 break; 7634 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7635 event[14] = 1; 7636 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7637 // EIR packets only contain a single inquiry response 7638 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7639 name = NULL; 7640 // Iterate over EIR data 7641 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7642 uint8_t data_type = ad_iterator_get_data_type(&context); 7643 uint8_t data_size = ad_iterator_get_data_len(&context); 7644 const uint8_t * data = ad_iterator_get_data(&context); 7645 // Prefer Complete Local Name over Shortened Local Name 7646 switch (data_type){ 7647 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7648 if (name) continue; 7649 /* fall through */ 7650 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7651 name = data; 7652 name_len = data_size; 7653 break; 7654 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7655 if (data_size != 8) break; 7656 event[16] = 1; 7657 memcpy(&event[17], data, 8); 7658 break; 7659 default: 7660 break; 7661 } 7662 } 7663 if (name){ 7664 event[25] = 1; 7665 // truncate name if needed 7666 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7667 event[26] = len; 7668 (void)memcpy(&event[27], name, len); 7669 event_size += len; 7670 } 7671 break; 7672 default: 7673 return; 7674 } 7675 event[1] = event_size - 2; 7676 hci_emit_event(event, event_size, 1); 7677 } 7678 } 7679 #endif 7680 7681 void hci_emit_state(void){ 7682 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7683 uint8_t event[3]; 7684 event[0] = BTSTACK_EVENT_STATE; 7685 event[1] = sizeof(event) - 2u; 7686 event[2] = hci_stack->state; 7687 hci_emit_event(event, sizeof(event), 1); 7688 } 7689 7690 #ifdef ENABLE_CLASSIC 7691 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7692 uint8_t event[13]; 7693 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7694 event[1] = sizeof(event) - 2; 7695 event[2] = status; 7696 little_endian_store_16(event, 3, con_handle); 7697 reverse_bd_addr(address, &event[5]); 7698 event[11] = 1; // ACL connection 7699 event[12] = 0; // encryption disabled 7700 hci_emit_event(event, sizeof(event), 1); 7701 } 7702 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7703 if (disable_l2cap_timeouts) return; 7704 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7705 uint8_t event[4]; 7706 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7707 event[1] = sizeof(event) - 2; 7708 little_endian_store_16(event, 2, conn->con_handle); 7709 hci_emit_event(event, sizeof(event), 1); 7710 } 7711 #endif 7712 7713 #ifdef ENABLE_BLE 7714 #ifdef ENABLE_LE_CENTRAL 7715 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){ 7716 uint8_t event[21]; 7717 event[0] = HCI_EVENT_LE_META; 7718 event[1] = sizeof(event) - 2u; 7719 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7720 event[3] = status; 7721 little_endian_store_16(event, 4, con_handle); 7722 event[6] = 0; // TODO: role 7723 event[7] = address_type; 7724 reverse_bd_addr(address, &event[8]); 7725 little_endian_store_16(event, 14, 0); // interval 7726 little_endian_store_16(event, 16, 0); // latency 7727 little_endian_store_16(event, 18, 0); // supervision timeout 7728 event[20] = 0; // master clock accuracy 7729 hci_emit_event(event, sizeof(event), 1); 7730 } 7731 #endif 7732 #endif 7733 7734 static void hci_emit_transport_packet_sent(void){ 7735 // notify upper stack that it might be possible to send again 7736 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7737 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7738 } 7739 7740 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7741 uint8_t event[6]; 7742 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7743 event[1] = sizeof(event) - 2u; 7744 event[2] = 0; // status = OK 7745 little_endian_store_16(event, 3, con_handle); 7746 event[5] = reason; 7747 hci_emit_event(event, sizeof(event), 1); 7748 } 7749 7750 static void hci_emit_nr_connections_changed(void){ 7751 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7752 uint8_t event[3]; 7753 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7754 event[1] = sizeof(event) - 2u; 7755 event[2] = nr_hci_connections(); 7756 hci_emit_event(event, sizeof(event), 1); 7757 } 7758 7759 static void hci_emit_hci_open_failed(void){ 7760 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7761 uint8_t event[2]; 7762 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7763 event[1] = sizeof(event) - 2u; 7764 hci_emit_event(event, sizeof(event), 1); 7765 } 7766 7767 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7768 log_info("hci_emit_dedicated_bonding_result %u ", status); 7769 uint8_t event[9]; 7770 int pos = 0; 7771 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7772 event[pos++] = sizeof(event) - 2u; 7773 event[pos++] = status; 7774 reverse_bd_addr(address, &event[pos]); 7775 hci_emit_event(event, sizeof(event), 1); 7776 } 7777 7778 7779 #ifdef ENABLE_CLASSIC 7780 7781 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7782 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7783 uint8_t event[5]; 7784 int pos = 0; 7785 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7786 event[pos++] = sizeof(event) - 2; 7787 little_endian_store_16(event, 2, con_handle); 7788 pos += 2; 7789 event[pos++] = level; 7790 hci_emit_event(event, sizeof(event), 1); 7791 } 7792 7793 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7794 if (!connection) return LEVEL_0; 7795 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7796 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7797 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7798 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7799 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7800 // LEVEL 4 always requires 128 bit encrytion key size 7801 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7802 security_level = LEVEL_3; 7803 } 7804 return security_level; 7805 } 7806 7807 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7808 uint8_t event[4]; 7809 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7810 event[1] = sizeof(event) - 2; 7811 event[2] = discoverable; 7812 event[3] = connectable; 7813 hci_emit_event(event, sizeof(event), 1); 7814 } 7815 7816 // query if remote side supports eSCO 7817 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7818 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7819 if (!connection) return false; 7820 return (connection->remote_supported_features[0] & 1) != 0; 7821 } 7822 7823 static bool hci_ssp_supported(hci_connection_t * connection){ 7824 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7825 return (connection->bonding_flags & mask) == mask; 7826 } 7827 7828 // query if remote side supports SSP 7829 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7830 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7831 if (!connection) return false; 7832 return hci_ssp_supported(connection) ? 1 : 0; 7833 } 7834 7835 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7836 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7837 } 7838 7839 /** 7840 * Check if remote supported features query has completed 7841 */ 7842 bool hci_remote_features_available(hci_con_handle_t handle){ 7843 hci_connection_t * connection = hci_connection_for_handle(handle); 7844 if (!connection) return false; 7845 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7846 } 7847 7848 /** 7849 * Trigger remote supported features query 7850 */ 7851 7852 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7853 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7854 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7855 } 7856 } 7857 7858 void hci_remote_features_query(hci_con_handle_t con_handle){ 7859 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7860 if (!connection) return; 7861 hci_trigger_remote_features_for_connection(connection); 7862 hci_run(); 7863 } 7864 7865 // GAP API 7866 /** 7867 * @bbrief enable/disable bonding. default is enabled 7868 * @praram enabled 7869 */ 7870 void gap_set_bondable_mode(int enable){ 7871 hci_stack->bondable = enable ? 1 : 0; 7872 } 7873 /** 7874 * @brief Get bondable mode. 7875 * @return 1 if bondable 7876 */ 7877 int gap_get_bondable_mode(void){ 7878 return hci_stack->bondable; 7879 } 7880 7881 /** 7882 * @brief map link keys to security levels 7883 */ 7884 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7885 switch (link_key_type){ 7886 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7887 return LEVEL_4; 7888 case COMBINATION_KEY: 7889 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7890 return LEVEL_3; 7891 default: 7892 return LEVEL_2; 7893 } 7894 } 7895 7896 /** 7897 * @brief map link keys to secure connection yes/no 7898 */ 7899 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7900 switch (link_key_type){ 7901 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7902 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7903 return true; 7904 default: 7905 return false; 7906 } 7907 } 7908 7909 /** 7910 * @brief map link keys to authenticated 7911 */ 7912 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7913 switch (link_key_type){ 7914 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7915 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7916 return true; 7917 default: 7918 return false; 7919 } 7920 } 7921 7922 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7923 log_info("gap_mitm_protection_required_for_security_level %u", level); 7924 return level > LEVEL_2; 7925 } 7926 7927 /** 7928 * @brief get current security level 7929 */ 7930 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7931 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7932 if (!connection) return LEVEL_0; 7933 return gap_security_level_for_connection(connection); 7934 } 7935 7936 /** 7937 * @brief request connection to device to 7938 * @result GAP_AUTHENTICATION_RESULT 7939 */ 7940 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7941 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7942 if (!connection){ 7943 hci_emit_security_level(con_handle, LEVEL_0); 7944 return; 7945 } 7946 7947 btstack_assert(hci_is_le_connection(connection) == false); 7948 7949 // 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) 7950 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7951 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7952 requested_level = LEVEL_4; 7953 } 7954 7955 gap_security_level_t current_level = gap_security_level(con_handle); 7956 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7957 requested_level, connection->requested_security_level, current_level); 7958 7959 // authentication active if authentication request was sent or planned level > 0 7960 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7961 if (authentication_active){ 7962 // authentication already active 7963 if (connection->requested_security_level < requested_level){ 7964 // increase requested level as new level is higher 7965 // TODO: handle re-authentication when done 7966 connection->requested_security_level = requested_level; 7967 } 7968 } else { 7969 // no request active, notify if security sufficient 7970 if (requested_level <= current_level){ 7971 hci_emit_security_level(con_handle, current_level); 7972 return; 7973 } 7974 7975 // store request 7976 connection->requested_security_level = requested_level; 7977 7978 // start to authenticate connection 7979 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7980 7981 // request remote features if not already active, also trigger hci_run 7982 hci_remote_features_query(con_handle); 7983 } 7984 } 7985 7986 /** 7987 * @brief start dedicated bonding with device. disconnect after bonding 7988 * @param device 7989 * @param request MITM protection 7990 * @result GAP_DEDICATED_BONDING_COMPLETE 7991 */ 7992 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7993 7994 // create connection state machine 7995 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7996 7997 if (!connection){ 7998 return BTSTACK_MEMORY_ALLOC_FAILED; 7999 } 8000 8001 // delete link key 8002 gap_drop_link_key_for_bd_addr(device); 8003 8004 // configure LEVEL_2/3, dedicated bonding 8005 connection->state = SEND_CREATE_CONNECTION; 8006 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8007 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8008 connection->bonding_flags = BONDING_DEDICATED; 8009 8010 hci_run(); 8011 8012 return 0; 8013 } 8014 8015 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8016 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8017 if (connection == NULL){ 8018 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8019 } 8020 if (defer){ 8021 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8022 } else { 8023 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8024 // trigger disconnect 8025 hci_run(); 8026 } 8027 return ERROR_CODE_SUCCESS; 8028 } 8029 8030 void gap_set_local_name(const char * local_name){ 8031 hci_stack->local_name = local_name; 8032 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8033 // also update EIR if not set by user 8034 if (hci_stack->eir_data == NULL){ 8035 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8036 } 8037 hci_run(); 8038 } 8039 #endif 8040 8041 8042 #ifdef ENABLE_BLE 8043 8044 #ifdef ENABLE_LE_CENTRAL 8045 void gap_start_scan(void){ 8046 hci_stack->le_scanning_enabled = true; 8047 hci_run(); 8048 } 8049 8050 void gap_stop_scan(void){ 8051 hci_stack->le_scanning_enabled = false; 8052 hci_run(); 8053 } 8054 8055 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8056 hci_stack->le_scan_type = scan_type; 8057 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8058 hci_stack->le_scan_interval = scan_interval; 8059 hci_stack->le_scan_window = scan_window; 8060 hci_stack->le_scanning_param_update = true; 8061 hci_run(); 8062 } 8063 8064 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8065 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8066 } 8067 8068 void gap_set_scan_duplicate_filter(bool enabled){ 8069 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8070 } 8071 8072 void gap_set_scan_phys(uint8_t phys){ 8073 // LE Coded and LE 1M PHY 8074 hci_stack->le_scan_phys = phys & 0x05; 8075 } 8076 8077 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 8078 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8079 if (!conn){ 8080 // disallow if le connection is already outgoing 8081 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8082 log_error("le connection already active"); 8083 return ERROR_CODE_COMMAND_DISALLOWED; 8084 } 8085 8086 log_info("gap_connect: no connection exists yet, creating context"); 8087 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8088 if (!conn){ 8089 // notify client that alloc failed 8090 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 8091 log_info("gap_connect: failed to alloc hci_connection_t"); 8092 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 8093 } 8094 8095 // set le connecting state 8096 if (hci_is_le_connection_type(addr_type)){ 8097 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8098 } 8099 8100 conn->state = SEND_CREATE_CONNECTION; 8101 log_info("gap_connect: send create connection next"); 8102 hci_run(); 8103 return ERROR_CODE_SUCCESS; 8104 } 8105 8106 if (!hci_is_le_connection(conn) || 8107 (conn->state == SEND_CREATE_CONNECTION) || 8108 (conn->state == SENT_CREATE_CONNECTION)) { 8109 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 8110 log_error("gap_connect: classic connection or connect is already being created"); 8111 return GATT_CLIENT_IN_WRONG_STATE; 8112 } 8113 8114 // check if connection was just disconnected 8115 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8116 log_info("gap_connect: send create connection (again)"); 8117 conn->state = SEND_CREATE_CONNECTION; 8118 hci_run(); 8119 return ERROR_CODE_SUCCESS; 8120 } 8121 8122 log_info("gap_connect: context exists with state %u", conn->state); 8123 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 8124 hci_run(); 8125 return ERROR_CODE_SUCCESS; 8126 } 8127 8128 // @assumption: only a single outgoing LE Connection exists 8129 static hci_connection_t * gap_get_outgoing_connection(void){ 8130 btstack_linked_item_t *it; 8131 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8132 hci_connection_t * conn = (hci_connection_t *) it; 8133 if (!hci_is_le_connection(conn)) continue; 8134 switch (conn->state){ 8135 case SEND_CREATE_CONNECTION: 8136 case SENT_CREATE_CONNECTION: 8137 return conn; 8138 default: 8139 break; 8140 }; 8141 } 8142 return NULL; 8143 } 8144 8145 uint8_t gap_connect_cancel(void){ 8146 hci_connection_t * conn; 8147 switch (hci_stack->le_connecting_request){ 8148 case LE_CONNECTING_IDLE: 8149 break; 8150 case LE_CONNECTING_WHITELIST: 8151 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8152 hci_run(); 8153 break; 8154 case LE_CONNECTING_DIRECT: 8155 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8156 conn = gap_get_outgoing_connection(); 8157 if (conn == NULL){ 8158 hci_run(); 8159 } else { 8160 switch (conn->state){ 8161 case SEND_CREATE_CONNECTION: 8162 // skip sending create connection and emit event instead 8163 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8164 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8165 btstack_memory_hci_connection_free( conn ); 8166 break; 8167 case SENT_CREATE_CONNECTION: 8168 // let hci_run_general_gap_le cancel outgoing connection 8169 hci_run(); 8170 break; 8171 default: 8172 break; 8173 } 8174 } 8175 break; 8176 default: 8177 btstack_unreachable(); 8178 break; 8179 } 8180 return ERROR_CODE_SUCCESS; 8181 } 8182 8183 /** 8184 * @brief Set connection parameters for outgoing connections 8185 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8186 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8187 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8188 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8189 * @param conn_latency, default: 4 8190 * @param supervision_timeout (unit: 10ms), default: 720 ms 8191 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8192 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8193 */ 8194 8195 void gap_set_connection_phys(uint8_t phys){ 8196 // LE Coded, LE 1M, LE 2M PHY 8197 hci_stack->le_connection_phys = phys & 7; 8198 } 8199 8200 #endif 8201 8202 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8203 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8204 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8205 hci_stack->le_connection_scan_interval = conn_scan_interval; 8206 hci_stack->le_connection_scan_window = conn_scan_window; 8207 hci_stack->le_connection_interval_min = conn_interval_min; 8208 hci_stack->le_connection_interval_max = conn_interval_max; 8209 hci_stack->le_connection_latency = conn_latency; 8210 hci_stack->le_supervision_timeout = supervision_timeout; 8211 hci_stack->le_minimum_ce_length = min_ce_length; 8212 hci_stack->le_maximum_ce_length = max_ce_length; 8213 } 8214 8215 /** 8216 * @brief Updates the connection parameters for a given LE connection 8217 * @param handle 8218 * @param conn_interval_min (unit: 1.25ms) 8219 * @param conn_interval_max (unit: 1.25ms) 8220 * @param conn_latency 8221 * @param supervision_timeout (unit: 10ms) 8222 * @return 0 if ok 8223 */ 8224 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8225 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8226 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8227 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8228 connection->le_conn_interval_min = conn_interval_min; 8229 connection->le_conn_interval_max = conn_interval_max; 8230 connection->le_conn_latency = conn_latency; 8231 connection->le_supervision_timeout = supervision_timeout; 8232 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8233 hci_run(); 8234 return 0; 8235 } 8236 8237 /** 8238 * @brief Request an update of the connection parameter for a given LE connection 8239 * @param handle 8240 * @param conn_interval_min (unit: 1.25ms) 8241 * @param conn_interval_max (unit: 1.25ms) 8242 * @param conn_latency 8243 * @param supervision_timeout (unit: 10ms) 8244 * @return 0 if ok 8245 */ 8246 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8247 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8248 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8249 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8250 connection->le_conn_interval_min = conn_interval_min; 8251 connection->le_conn_interval_max = conn_interval_max; 8252 connection->le_conn_latency = conn_latency; 8253 connection->le_supervision_timeout = supervision_timeout; 8254 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8255 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8256 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8257 return 0; 8258 } 8259 8260 #ifdef ENABLE_LE_PERIPHERAL 8261 8262 /** 8263 * @brief Set Advertisement Data 8264 * @param advertising_data_length 8265 * @param advertising_data (max 31 octets) 8266 * @note data is not copied, pointer has to stay valid 8267 */ 8268 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8269 hci_stack->le_advertisements_data_len = advertising_data_length; 8270 hci_stack->le_advertisements_data = advertising_data; 8271 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8272 hci_run(); 8273 } 8274 8275 /** 8276 * @brief Set Scan Response Data 8277 * @param advertising_data_length 8278 * @param advertising_data (max 31 octets) 8279 * @note data is not copied, pointer has to stay valid 8280 */ 8281 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8282 hci_stack->le_scan_response_data_len = scan_response_data_length; 8283 hci_stack->le_scan_response_data = scan_response_data; 8284 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8285 hci_run(); 8286 } 8287 8288 /** 8289 * @brief Set Advertisement Parameters 8290 * @param adv_int_min 8291 * @param adv_int_max 8292 * @param adv_type 8293 * @param direct_address_type 8294 * @param direct_address 8295 * @param channel_map 8296 * @param filter_policy 8297 * 8298 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8299 */ 8300 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8301 uint8_t direct_address_typ, bd_addr_t direct_address, 8302 uint8_t channel_map, uint8_t filter_policy) { 8303 8304 hci_stack->le_advertisements_interval_min = adv_int_min; 8305 hci_stack->le_advertisements_interval_max = adv_int_max; 8306 hci_stack->le_advertisements_type = adv_type; 8307 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8308 hci_stack->le_advertisements_channel_map = channel_map; 8309 hci_stack->le_advertisements_filter_policy = filter_policy; 8310 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8311 6); 8312 8313 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8314 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8315 hci_run(); 8316 } 8317 8318 /** 8319 * @brief Enable/Disable Advertisements 8320 * @param enabled 8321 */ 8322 void gap_advertisements_enable(int enabled){ 8323 if (enabled == 0){ 8324 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8325 } else { 8326 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8327 } 8328 hci_update_advertisements_enabled_for_current_roles(); 8329 hci_run(); 8330 } 8331 8332 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8333 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8334 btstack_linked_list_iterator_t it; 8335 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8336 while (btstack_linked_list_iterator_has_next(&it)){ 8337 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8338 if ( item->advertising_handle == advertising_handle ) { 8339 return item; 8340 } 8341 } 8342 return NULL; 8343 } 8344 8345 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8346 // find free advertisement handle 8347 uint8_t advertisement_handle; 8348 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8349 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8350 } 8351 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8352 // clear 8353 memset(storage, 0, sizeof(le_advertising_set_t)); 8354 // copy params 8355 storage->advertising_handle = advertisement_handle; 8356 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8357 // add to list 8358 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8359 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8360 *out_advertising_handle = advertisement_handle; 8361 // set tasks and start 8362 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8363 hci_run(); 8364 return ERROR_CODE_SUCCESS; 8365 } 8366 8367 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8368 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8369 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8370 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8371 // set tasks and start 8372 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8373 hci_run(); 8374 return ERROR_CODE_SUCCESS; 8375 } 8376 8377 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8378 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8379 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8380 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8381 return ERROR_CODE_SUCCESS; 8382 } 8383 8384 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8385 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8386 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8387 memcpy(advertising_set->random_address, random_address, 6); 8388 // set tasks and start 8389 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8390 hci_run(); 8391 return ERROR_CODE_SUCCESS; 8392 } 8393 8394 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8395 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8396 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8397 advertising_set->adv_data = advertising_data; 8398 advertising_set->adv_data_len = advertising_data_length; 8399 // set tasks and start 8400 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8401 hci_run(); 8402 return ERROR_CODE_SUCCESS; 8403 } 8404 8405 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){ 8406 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8407 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8408 advertising_set->scan_data = scan_response_data; 8409 advertising_set->scan_data_len = scan_response_data_length; 8410 // set tasks and start 8411 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8412 hci_run(); 8413 return ERROR_CODE_SUCCESS; 8414 } 8415 8416 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8417 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8418 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8419 advertising_set->enable_timeout = timeout; 8420 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8421 // set tasks and start 8422 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8423 hci_run(); 8424 return ERROR_CODE_SUCCESS; 8425 } 8426 8427 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8428 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8429 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8430 // set tasks and start 8431 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8432 hci_run(); 8433 return ERROR_CODE_SUCCESS; 8434 } 8435 8436 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8437 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8438 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8439 // set tasks and start 8440 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8441 hci_run(); 8442 return ERROR_CODE_SUCCESS; 8443 } 8444 8445 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8446 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8447 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8448 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8449 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8450 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8451 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8452 // set tasks and start 8453 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8454 hci_run(); 8455 return ERROR_CODE_SUCCESS; 8456 } 8457 8458 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8459 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8460 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8461 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8462 return ERROR_CODE_SUCCESS; 8463 } 8464 8465 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8466 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8467 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8468 advertising_set->periodic_data = periodic_data; 8469 advertising_set->periodic_data_len = periodic_data_length; 8470 // set tasks and start 8471 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8472 hci_run(); 8473 return ERROR_CODE_SUCCESS; 8474 } 8475 8476 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8477 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8478 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8479 // set tasks and start 8480 advertising_set->periodic_include_adi = include_adi; 8481 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8482 hci_run(); 8483 return ERROR_CODE_SUCCESS; 8484 } 8485 8486 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8487 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8488 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8489 // set tasks and start 8490 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8491 hci_run(); 8492 return ERROR_CODE_SUCCESS; 8493 } 8494 8495 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8496 hci_stack->le_past_mode = mode; 8497 hci_stack->le_past_skip = skip; 8498 hci_stack->le_past_sync_timeout = sync_timeout; 8499 hci_stack->le_past_cte_type = cte_type; 8500 hci_stack->le_past_set_default_params = true; 8501 hci_run(); 8502 return ERROR_CODE_SUCCESS; 8503 } 8504 8505 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8506 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8507 if (hci_connection == NULL){ 8508 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8509 } 8510 hci_connection->le_past_sync_handle = sync_handle; 8511 hci_connection->le_past_service_data = service_data; 8512 hci_run(); 8513 return ERROR_CODE_SUCCESS; 8514 } 8515 8516 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8517 8518 #endif 8519 8520 #endif 8521 8522 void hci_le_set_own_address_type(uint8_t own_address_type){ 8523 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8524 if (own_address_type == hci_stack->le_own_addr_type) return; 8525 hci_stack->le_own_addr_type = own_address_type; 8526 8527 #ifdef ENABLE_LE_PERIPHERAL 8528 // update advertisement parameters, too 8529 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8530 hci_run(); 8531 #endif 8532 #ifdef ENABLE_LE_CENTRAL 8533 // note: we don't update scan parameters or modify ongoing connection attempts 8534 #endif 8535 } 8536 8537 void hci_le_random_address_set(const bd_addr_t random_address){ 8538 memcpy(hci_stack->le_random_address, random_address, 6); 8539 hci_stack->le_random_address_set = true; 8540 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8541 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8542 if (hci_extended_advertising_supported()){ 8543 // force advertising set creation for LE Set Advertising Set Random Address 8544 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8545 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8546 } 8547 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8548 } 8549 #endif 8550 hci_run(); 8551 } 8552 8553 #endif 8554 8555 uint8_t gap_disconnect(hci_con_handle_t handle){ 8556 hci_connection_t * conn = hci_connection_for_handle(handle); 8557 if (!conn){ 8558 hci_emit_disconnection_complete(handle, 0); 8559 return 0; 8560 } 8561 // ignore if already disconnected 8562 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8563 return 0; 8564 } 8565 conn->state = SEND_DISCONNECT; 8566 hci_run(); 8567 return 0; 8568 } 8569 8570 int gap_read_rssi(hci_con_handle_t con_handle){ 8571 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8572 if (hci_connection == NULL) return 0; 8573 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8574 hci_run(); 8575 return 1; 8576 } 8577 8578 /** 8579 * @brief Get connection type 8580 * @param con_handle 8581 * @result connection_type 8582 */ 8583 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8584 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8585 if (!conn) return GAP_CONNECTION_INVALID; 8586 switch (conn->address_type){ 8587 case BD_ADDR_TYPE_LE_PUBLIC: 8588 case BD_ADDR_TYPE_LE_RANDOM: 8589 return GAP_CONNECTION_LE; 8590 case BD_ADDR_TYPE_SCO: 8591 return GAP_CONNECTION_SCO; 8592 case BD_ADDR_TYPE_ACL: 8593 return GAP_CONNECTION_ACL; 8594 default: 8595 return GAP_CONNECTION_INVALID; 8596 } 8597 } 8598 8599 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8600 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8601 if (!conn) return HCI_ROLE_INVALID; 8602 return (hci_role_t) conn->role; 8603 } 8604 8605 8606 #ifdef ENABLE_CLASSIC 8607 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8608 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8609 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8610 conn->request_role = role; 8611 hci_run(); 8612 return ERROR_CODE_SUCCESS; 8613 } 8614 #endif 8615 8616 #ifdef ENABLE_BLE 8617 8618 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){ 8619 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8620 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8621 8622 conn->le_phy_update_all_phys = all_phys; 8623 conn->le_phy_update_tx_phys = tx_phys; 8624 conn->le_phy_update_rx_phys = rx_phys; 8625 conn->le_phy_update_phy_options = phy_options; 8626 8627 hci_run(); 8628 8629 return 0; 8630 } 8631 8632 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8633 // check if already in list 8634 btstack_linked_list_iterator_t it; 8635 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8636 while (btstack_linked_list_iterator_has_next(&it)) { 8637 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8638 if (entry->address_type != address_type) { 8639 continue; 8640 } 8641 if (memcmp(entry->address, address, 6) != 0) { 8642 continue; 8643 } 8644 8645 // if already on controller: 8646 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 8647 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 8648 // drop remove request 8649 entry->state = LE_WHITELIST_ON_CONTROLLER; 8650 return ERROR_CODE_SUCCESS; 8651 } else { 8652 // disallow as already on controller 8653 return ERROR_CODE_COMMAND_DISALLOWED; 8654 } 8655 } 8656 8657 // assume scheduled to add 8658 return ERROR_CODE_COMMAND_DISALLOWED; 8659 } 8660 8661 // alloc and add to list 8662 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8663 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8664 entry->address_type = address_type; 8665 (void)memcpy(entry->address, address, 6); 8666 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8667 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8668 return ERROR_CODE_SUCCESS; 8669 } 8670 8671 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8672 btstack_linked_list_iterator_t it; 8673 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8674 while (btstack_linked_list_iterator_has_next(&it)){ 8675 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8676 if (entry->address_type != address_type) { 8677 continue; 8678 } 8679 if (memcmp(entry->address, address, 6) != 0) { 8680 continue; 8681 } 8682 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8683 // remove from controller if already present 8684 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8685 } else { 8686 // directly remove entry from whitelist 8687 btstack_linked_list_iterator_remove(&it); 8688 btstack_memory_whitelist_entry_free(entry); 8689 } 8690 return ERROR_CODE_SUCCESS; 8691 } 8692 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8693 } 8694 8695 static void hci_whitelist_clear(void){ 8696 btstack_linked_list_iterator_t it; 8697 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8698 while (btstack_linked_list_iterator_has_next(&it)){ 8699 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8700 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8701 // remove from controller if already present 8702 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8703 continue; 8704 } 8705 // directly remove entry from whitelist 8706 btstack_linked_list_iterator_remove(&it); 8707 btstack_memory_whitelist_entry_free(entry); 8708 } 8709 } 8710 8711 /** 8712 * @brief Clear Whitelist 8713 * @return 0 if ok 8714 */ 8715 uint8_t gap_whitelist_clear(void){ 8716 hci_whitelist_clear(); 8717 hci_run(); 8718 return ERROR_CODE_SUCCESS; 8719 } 8720 8721 /** 8722 * @brief Add Device to Whitelist 8723 * @param address_typ 8724 * @param address 8725 * @return 0 if ok 8726 */ 8727 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8728 uint8_t status = hci_whitelist_add(address_type, address); 8729 if (status){ 8730 return status; 8731 } 8732 hci_run(); 8733 return ERROR_CODE_SUCCESS; 8734 } 8735 8736 /** 8737 * @brief Remove Device from Whitelist 8738 * @param address_typ 8739 * @param address 8740 * @return 0 if ok 8741 */ 8742 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8743 uint8_t status = hci_whitelist_remove(address_type, address); 8744 if (status){ 8745 return status; 8746 } 8747 hci_run(); 8748 return ERROR_CODE_SUCCESS; 8749 } 8750 8751 #ifdef ENABLE_LE_CENTRAL 8752 /** 8753 * @brief Connect with Whitelist 8754 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8755 * @return - if ok 8756 */ 8757 uint8_t gap_connect_with_whitelist(void){ 8758 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8759 return ERROR_CODE_COMMAND_DISALLOWED; 8760 } 8761 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8762 hci_run(); 8763 return ERROR_CODE_SUCCESS; 8764 } 8765 8766 /** 8767 * @brief Auto Connection Establishment - Start Connecting to device 8768 * @param address_typ 8769 * @param address 8770 * @return 0 if ok 8771 */ 8772 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8773 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8774 return ERROR_CODE_COMMAND_DISALLOWED; 8775 } 8776 8777 uint8_t status = hci_whitelist_add(address_type, address); 8778 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8779 return status; 8780 } 8781 8782 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8783 8784 hci_run(); 8785 return ERROR_CODE_SUCCESS; 8786 } 8787 8788 /** 8789 * @brief Auto Connection Establishment - Stop Connecting to device 8790 * @param address_typ 8791 * @param address 8792 * @return 0 if ok 8793 */ 8794 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8795 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8796 return ERROR_CODE_COMMAND_DISALLOWED; 8797 } 8798 8799 hci_whitelist_remove(address_type, address); 8800 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8801 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8802 } 8803 hci_run(); 8804 return 0; 8805 } 8806 8807 /** 8808 * @brief Auto Connection Establishment - Stop everything 8809 * @note Convenience function to stop all active auto connection attempts 8810 */ 8811 uint8_t gap_auto_connection_stop_all(void){ 8812 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8813 return ERROR_CODE_COMMAND_DISALLOWED; 8814 } 8815 hci_whitelist_clear(); 8816 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8817 hci_run(); 8818 return ERROR_CODE_SUCCESS; 8819 } 8820 8821 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8822 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8823 if (!conn) return 0; 8824 return conn->le_connection_interval; 8825 } 8826 #endif 8827 #endif 8828 8829 #ifdef ENABLE_CLASSIC 8830 /** 8831 * @brief Set Extended Inquiry Response data 8832 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8833 * @note has to be done before stack starts up 8834 */ 8835 void gap_set_extended_inquiry_response(const uint8_t * data){ 8836 hci_stack->eir_data = data; 8837 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8838 hci_run(); 8839 } 8840 8841 /** 8842 * @brief Start GAP Classic Inquiry 8843 * @param duration in 1.28s units 8844 * @return 0 if ok 8845 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8846 */ 8847 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8848 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8849 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8850 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8851 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8852 } 8853 hci_stack->inquiry_state = duration_in_1280ms_units; 8854 hci_stack->inquiry_max_period_length = 0; 8855 hci_stack->inquiry_min_period_length = 0; 8856 hci_run(); 8857 return 0; 8858 } 8859 8860 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8861 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8862 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8863 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8864 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8865 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8866 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8867 8868 hci_stack->inquiry_state = duration; 8869 hci_stack->inquiry_max_period_length = max_period_length; 8870 hci_stack->inquiry_min_period_length = min_period_length; 8871 hci_run(); 8872 return 0; 8873 } 8874 8875 /** 8876 * @brief Stop GAP Classic Inquiry 8877 * @return 0 if ok 8878 */ 8879 int gap_inquiry_stop(void){ 8880 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8881 // emit inquiry complete event, before it even started 8882 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8883 hci_emit_event(event, sizeof(event), 1); 8884 return 0; 8885 } 8886 switch (hci_stack->inquiry_state){ 8887 case GAP_INQUIRY_STATE_ACTIVE: 8888 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8889 hci_run(); 8890 return ERROR_CODE_SUCCESS; 8891 case GAP_INQUIRY_STATE_PERIODIC: 8892 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8893 hci_run(); 8894 return ERROR_CODE_SUCCESS; 8895 default: 8896 return ERROR_CODE_COMMAND_DISALLOWED; 8897 } 8898 } 8899 8900 void gap_inquiry_set_lap(uint32_t lap){ 8901 hci_stack->inquiry_lap = lap; 8902 } 8903 8904 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8905 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8906 hci_stack->inquiry_scan_window = inquiry_scan_window; 8907 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8908 hci_run(); 8909 } 8910 8911 8912 /** 8913 * @brief Remote Name Request 8914 * @param addr 8915 * @param page_scan_repetition_mode 8916 * @param clock_offset only used when bit 15 is set 8917 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8918 */ 8919 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8920 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8921 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8922 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8923 hci_stack->remote_name_clock_offset = clock_offset; 8924 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8925 hci_run(); 8926 return 0; 8927 } 8928 8929 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8930 hci_stack->gap_pairing_state = state; 8931 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8932 hci_run(); 8933 return 0; 8934 } 8935 8936 /** 8937 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8938 * @param addr 8939 * @param pin_data 8940 * @param pin_len 8941 * @return 0 if ok 8942 */ 8943 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8944 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8945 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8946 hci_stack->gap_pairing_pin_len = pin_len; 8947 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8948 } 8949 8950 /** 8951 * @brief Legacy Pairing Pin Code Response 8952 * @param addr 8953 * @param pin 8954 * @return 0 if ok 8955 */ 8956 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8957 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8958 } 8959 8960 /** 8961 * @brief Abort Legacy Pairing 8962 * @param addr 8963 * @param pin 8964 * @return 0 if ok 8965 */ 8966 int gap_pin_code_negative(bd_addr_t addr){ 8967 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8968 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8969 } 8970 8971 /** 8972 * @brief SSP Passkey Response 8973 * @param addr 8974 * @param passkey 8975 * @return 0 if ok 8976 */ 8977 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8978 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8979 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8980 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8981 } 8982 8983 /** 8984 * @brief Abort SSP Passkey Entry/Pairing 8985 * @param addr 8986 * @param pin 8987 * @return 0 if ok 8988 */ 8989 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8990 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8991 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8992 } 8993 8994 /** 8995 * @brief Accept SSP Numeric Comparison 8996 * @param addr 8997 * @param passkey 8998 * @return 0 if ok 8999 */ 9000 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9001 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9002 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9003 } 9004 9005 /** 9006 * @brief Abort SSP Numeric Comparison/Pairing 9007 * @param addr 9008 * @param pin 9009 * @return 0 if ok 9010 */ 9011 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9012 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9013 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9014 } 9015 9016 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9017 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9018 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9019 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9020 connectionSetAuthenticationFlags(conn, flag); 9021 hci_run(); 9022 return ERROR_CODE_SUCCESS; 9023 } 9024 #endif 9025 9026 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9027 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9028 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9029 } 9030 9031 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9032 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9033 } 9034 #endif 9035 9036 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9037 /** 9038 * @brief Report Remote OOB Data 9039 * @param bd_addr 9040 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9041 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9042 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9043 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9044 */ 9045 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){ 9046 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9047 if (connection == NULL) { 9048 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9049 } 9050 connection->classic_oob_c_192 = c_192; 9051 connection->classic_oob_r_192 = r_192; 9052 9053 // ignore P-256 if not supported by us 9054 if (hci_stack->secure_connections_active){ 9055 connection->classic_oob_c_256 = c_256; 9056 connection->classic_oob_r_256 = r_256; 9057 } 9058 9059 return ERROR_CODE_SUCCESS; 9060 } 9061 /** 9062 * @brief Generate new OOB data 9063 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9064 */ 9065 void gap_ssp_generate_oob_data(void){ 9066 hci_stack->classic_read_local_oob_data = true; 9067 hci_run(); 9068 } 9069 9070 #endif 9071 9072 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9073 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9074 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9075 if (connection == NULL) { 9076 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9077 } 9078 9079 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9080 connection->link_key_type = type; 9081 9082 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9083 } 9084 9085 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9086 /** 9087 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9088 * @param inquiry_mode see bluetooth_defines.h 9089 */ 9090 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9091 hci_stack->inquiry_mode = inquiry_mode; 9092 } 9093 9094 /** 9095 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9096 */ 9097 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9098 hci_stack->sco_voice_setting = voice_setting; 9099 } 9100 9101 /** 9102 * @brief Get SCO Voice Setting 9103 * @return current voice setting 9104 */ 9105 uint16_t hci_get_sco_voice_setting(void){ 9106 return hci_stack->sco_voice_setting; 9107 } 9108 9109 static int hci_have_usb_transport(void){ 9110 if (!hci_stack->hci_transport) return 0; 9111 const char * transport_name = hci_stack->hci_transport->name; 9112 if (!transport_name) return 0; 9113 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9114 } 9115 9116 /** @brief Get SCO packet length for current SCO Voice setting 9117 * @note Using SCO packets of the exact length is required for USB transfer 9118 * @return Length of SCO packets in bytes (not audio frames) 9119 */ 9120 uint16_t hci_get_sco_packet_length(void){ 9121 uint16_t sco_packet_length = 0; 9122 9123 #ifdef ENABLE_SCO_OVER_HCI 9124 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9125 int multiplier; 9126 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9127 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9128 multiplier = 2; 9129 } else { 9130 multiplier = 1; 9131 } 9132 9133 9134 if (hci_have_usb_transport()){ 9135 // see Core Spec for H2 USB Transfer. 9136 // 3 byte SCO header + 24 bytes per connection 9137 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 9138 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 9139 } else { 9140 // 3 byte SCO header + SCO packet size over the air (60 bytes) 9141 sco_packet_length = 3 + 60 * multiplier; 9142 // assert that it still fits inside an SCO buffer 9143 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9144 sco_packet_length = 3 + 60; 9145 } 9146 } 9147 #endif 9148 9149 #ifdef HAVE_SCO_TRANSPORT 9150 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9151 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 9152 sco_packet_length = 3 + 60 * multiplier; 9153 #endif 9154 return sco_packet_length; 9155 } 9156 9157 /** 9158 * @brief Sets the master/slave policy 9159 * @param policy (0: attempt to become master, 1: let connecting device decide) 9160 */ 9161 void hci_set_master_slave_policy(uint8_t policy){ 9162 hci_stack->master_slave_policy = policy; 9163 } 9164 9165 #endif 9166 9167 HCI_STATE hci_get_state(void){ 9168 return hci_stack->state; 9169 } 9170 9171 #ifdef ENABLE_CLASSIC 9172 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9173 hci_stack->gap_classic_accept_callback = accept_callback; 9174 } 9175 #endif 9176 9177 /** 9178 * @brief Set callback for Bluetooth Hardware Error 9179 */ 9180 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9181 hci_stack->hardware_error_callback = fn; 9182 } 9183 9184 void hci_disconnect_all(void){ 9185 btstack_linked_list_iterator_t it; 9186 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9187 while (btstack_linked_list_iterator_has_next(&it)){ 9188 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9189 if (con->state == SENT_DISCONNECT) continue; 9190 con->state = SEND_DISCONNECT; 9191 } 9192 hci_run(); 9193 } 9194 9195 uint16_t hci_get_manufacturer(void){ 9196 return hci_stack->manufacturer; 9197 } 9198 9199 #ifdef ENABLE_BLE 9200 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9201 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9202 if (!hci_con) return NULL; 9203 return &hci_con->sm_connection; 9204 } 9205 9206 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9207 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9208 #endif 9209 9210 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9211 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9212 if (hci_connection == NULL) return 0; 9213 if (hci_is_le_connection(hci_connection)){ 9214 #ifdef ENABLE_BLE 9215 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9216 if (sm_conn->sm_connection_encrypted) { 9217 return sm_conn->sm_actual_encryption_key_size; 9218 } 9219 #endif 9220 } else { 9221 #ifdef ENABLE_CLASSIC 9222 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9223 return hci_connection->encryption_key_size; 9224 } 9225 #endif 9226 } 9227 return 0; 9228 } 9229 9230 bool gap_authenticated(hci_con_handle_t con_handle){ 9231 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9232 if (hci_connection == NULL) return false; 9233 9234 switch (hci_connection->address_type){ 9235 #ifdef ENABLE_BLE 9236 case BD_ADDR_TYPE_LE_PUBLIC: 9237 case BD_ADDR_TYPE_LE_RANDOM: 9238 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9239 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9240 #endif 9241 #ifdef ENABLE_CLASSIC 9242 case BD_ADDR_TYPE_SCO: 9243 case BD_ADDR_TYPE_ACL: 9244 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9245 #endif 9246 default: 9247 return false; 9248 } 9249 } 9250 9251 bool gap_secure_connection(hci_con_handle_t con_handle){ 9252 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9253 if (hci_connection == NULL) return 0; 9254 9255 switch (hci_connection->address_type){ 9256 #ifdef ENABLE_BLE 9257 case BD_ADDR_TYPE_LE_PUBLIC: 9258 case BD_ADDR_TYPE_LE_RANDOM: 9259 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9260 return hci_connection->sm_connection.sm_connection_sc != 0; 9261 #endif 9262 #ifdef ENABLE_CLASSIC 9263 case BD_ADDR_TYPE_SCO: 9264 case BD_ADDR_TYPE_ACL: 9265 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9266 #endif 9267 default: 9268 return false; 9269 } 9270 } 9271 9272 bool gap_bonded(hci_con_handle_t con_handle){ 9273 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9274 if (hci_connection == NULL) return 0; 9275 9276 #ifdef ENABLE_CLASSIC 9277 link_key_t link_key; 9278 link_key_type_t link_key_type; 9279 #endif 9280 switch (hci_connection->address_type){ 9281 #ifdef ENABLE_BLE 9282 case BD_ADDR_TYPE_LE_PUBLIC: 9283 case BD_ADDR_TYPE_LE_RANDOM: 9284 return hci_connection->sm_connection.sm_le_db_index >= 0; 9285 #endif 9286 #ifdef ENABLE_CLASSIC 9287 case BD_ADDR_TYPE_SCO: 9288 case BD_ADDR_TYPE_ACL: 9289 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9290 #endif 9291 default: 9292 return false; 9293 } 9294 } 9295 9296 #ifdef ENABLE_BLE 9297 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9298 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9299 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9300 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9301 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9302 return sm_conn->sm_connection_authorization_state; 9303 } 9304 #endif 9305 9306 #ifdef ENABLE_CLASSIC 9307 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){ 9308 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9309 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9310 conn->sniff_min_interval = sniff_min_interval; 9311 conn->sniff_max_interval = sniff_max_interval; 9312 conn->sniff_attempt = sniff_attempt; 9313 conn->sniff_timeout = sniff_timeout; 9314 hci_run(); 9315 return 0; 9316 } 9317 9318 /** 9319 * @brief Exit Sniff mode 9320 * @param con_handle 9321 @ @return 0 if ok 9322 */ 9323 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9324 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9325 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9326 conn->sniff_min_interval = 0xffff; 9327 hci_run(); 9328 return 0; 9329 } 9330 9331 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){ 9332 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9333 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9334 conn->sniff_subrating_max_latency = max_latency; 9335 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9336 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9337 hci_run(); 9338 return ERROR_CODE_SUCCESS; 9339 } 9340 9341 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){ 9342 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9343 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9344 conn->qos_service_type = service_type; 9345 conn->qos_token_rate = token_rate; 9346 conn->qos_peak_bandwidth = peak_bandwidth; 9347 conn->qos_latency = latency; 9348 conn->qos_delay_variation = delay_variation; 9349 hci_run(); 9350 return ERROR_CODE_SUCCESS; 9351 } 9352 9353 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9354 hci_stack->new_page_scan_interval = page_scan_interval; 9355 hci_stack->new_page_scan_window = page_scan_window; 9356 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9357 hci_run(); 9358 } 9359 9360 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9361 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9362 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9363 hci_run(); 9364 } 9365 9366 void gap_set_page_timeout(uint16_t page_timeout){ 9367 hci_stack->page_timeout = page_timeout; 9368 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9369 hci_run(); 9370 } 9371 9372 #endif 9373 9374 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9375 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9376 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9377 if (le_device_db_index >= le_device_db_max_count()) return; 9378 uint8_t offset = le_device_db_index >> 3; 9379 uint8_t mask = 1 << (le_device_db_index & 7); 9380 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9381 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9382 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9383 // note: go back to remove entries, otherwise, a remove + add will skip the add 9384 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9385 } 9386 } 9387 9388 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9389 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9390 if (le_device_db_index >= le_device_db_max_count()) return; 9391 uint8_t offset = le_device_db_index >> 3; 9392 uint8_t mask = 1 << (le_device_db_index & 7); 9393 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9394 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9395 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9396 } 9397 } 9398 9399 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9400 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9401 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9402 } 9403 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9404 // restart le resolving list update 9405 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9406 } 9407 return ERROR_CODE_SUCCESS; 9408 } 9409 9410 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9411 hci_stack->le_privacy_mode = privacy_mode; 9412 } 9413 #endif 9414 9415 #ifdef ENABLE_BLE 9416 #ifdef ENABLE_LE_CENTRAL 9417 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9418 9419 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9420 // check if already in list 9421 btstack_linked_list_iterator_t it; 9422 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9423 while (btstack_linked_list_iterator_has_next(&it)) { 9424 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9425 if (entry->sid != advertising_sid) { 9426 continue; 9427 } 9428 if (entry->address_type != address_type) { 9429 continue; 9430 } 9431 if (memcmp(entry->address, address, 6) != 0) { 9432 continue; 9433 } 9434 // disallow if already scheduled to add 9435 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9436 return ERROR_CODE_COMMAND_DISALLOWED; 9437 } 9438 // still on controller, but scheduled to remove -> re-add 9439 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9440 return ERROR_CODE_SUCCESS; 9441 } 9442 // alloc and add to list 9443 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9444 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9445 entry->sid = advertising_sid; 9446 entry->address_type = address_type; 9447 (void)memcpy(entry->address, address, 6); 9448 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9449 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9450 return ERROR_CODE_SUCCESS; 9451 } 9452 9453 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9454 btstack_linked_list_iterator_t it; 9455 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9456 while (btstack_linked_list_iterator_has_next(&it)){ 9457 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9458 if (entry->sid != advertising_sid) { 9459 continue; 9460 } 9461 if (entry->address_type != address_type) { 9462 continue; 9463 } 9464 if (memcmp(entry->address, address, 6) != 0) { 9465 continue; 9466 } 9467 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9468 // remove from controller if already present 9469 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9470 } else { 9471 // directly remove entry from whitelist 9472 btstack_linked_list_iterator_remove(&it); 9473 btstack_memory_periodic_advertiser_list_entry_free(entry); 9474 } 9475 return ERROR_CODE_SUCCESS; 9476 } 9477 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9478 } 9479 9480 static void hci_periodic_advertiser_list_clear(void){ 9481 btstack_linked_list_iterator_t it; 9482 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9483 while (btstack_linked_list_iterator_has_next(&it)){ 9484 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9485 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9486 // remove from controller if already present 9487 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9488 continue; 9489 } 9490 // directly remove entry from whitelist 9491 btstack_linked_list_iterator_remove(&it); 9492 btstack_memory_periodic_advertiser_list_entry_free(entry); 9493 } 9494 } 9495 9496 uint8_t gap_periodic_advertiser_list_clear(void){ 9497 hci_periodic_advertiser_list_clear(); 9498 hci_run(); 9499 return ERROR_CODE_SUCCESS; 9500 } 9501 9502 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9503 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9504 if (status){ 9505 return status; 9506 } 9507 hci_run(); 9508 return ERROR_CODE_SUCCESS; 9509 } 9510 9511 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9512 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9513 if (status){ 9514 return status; 9515 } 9516 hci_run(); 9517 return ERROR_CODE_SUCCESS; 9518 } 9519 9520 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9521 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9522 // abort if already active 9523 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9524 return ERROR_CODE_COMMAND_DISALLOWED; 9525 } 9526 // store request 9527 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9528 hci_stack->le_periodic_sync_options = options; 9529 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9530 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9531 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9532 hci_stack->le_periodic_sync_skip = skip; 9533 hci_stack->le_periodic_sync_timeout = sync_timeout; 9534 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9535 9536 hci_run(); 9537 return ERROR_CODE_SUCCESS; 9538 } 9539 9540 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9541 // abort if not requested 9542 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9543 return ERROR_CODE_COMMAND_DISALLOWED; 9544 } 9545 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9546 hci_run(); 9547 return ERROR_CODE_SUCCESS; 9548 } 9549 9550 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9551 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9552 return ERROR_CODE_COMMAND_DISALLOWED; 9553 } 9554 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9555 hci_run(); 9556 return ERROR_CODE_SUCCESS; 9557 } 9558 9559 #endif 9560 #endif 9561 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9562 static hci_iso_stream_t * 9563 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9564 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9565 if (iso_stream != NULL){ 9566 iso_stream->iso_type = iso_type; 9567 iso_stream->state = state; 9568 iso_stream->group_id = group_id; 9569 iso_stream->stream_id = stream_id; 9570 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9571 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9572 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9573 } 9574 return iso_stream; 9575 } 9576 9577 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9578 btstack_linked_list_iterator_t it; 9579 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9580 while (btstack_linked_list_iterator_has_next(&it)){ 9581 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9582 if (iso_stream->cis_handle == con_handle ) { 9583 return iso_stream; 9584 } 9585 } 9586 return NULL; 9587 } 9588 9589 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9590 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9591 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9592 btstack_memory_hci_iso_stream_free(iso_stream); 9593 } 9594 9595 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9596 btstack_linked_list_iterator_t it; 9597 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9598 while (btstack_linked_list_iterator_has_next(&it)){ 9599 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9600 if ((iso_stream->group_id == group_id) && 9601 (iso_stream->iso_type == iso_type)){ 9602 btstack_linked_list_iterator_remove(&it); 9603 btstack_memory_hci_iso_stream_free(iso_stream); 9604 } 9605 } 9606 } 9607 9608 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9609 btstack_linked_list_iterator_t it; 9610 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9611 while (btstack_linked_list_iterator_has_next(&it)){ 9612 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9613 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9614 (iso_stream->group_id == group_id)){ 9615 btstack_linked_list_iterator_remove(&it); 9616 btstack_memory_hci_iso_stream_free(iso_stream); 9617 } 9618 } 9619 } 9620 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9621 btstack_linked_list_iterator_t it; 9622 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9623 while (btstack_linked_list_iterator_has_next(&it)){ 9624 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9625 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9626 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9627 } 9628 } 9629 } 9630 9631 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9632 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9633 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9634 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9635 return (sdu_len_offset + 2 + sdu_len) == size; 9636 } 9637 9638 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9639 if (hci_stack->iso_packet_handler == NULL) { 9640 return; 9641 } 9642 if (size < 4) { 9643 return; 9644 } 9645 9646 // parse header 9647 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9648 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9649 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9650 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9651 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9652 9653 // assert packet is complete 9654 if ((iso_data_len + 4u) != size){ 9655 return; 9656 } 9657 9658 if ((pb_flag & 0x01) == 0){ 9659 if (pb_flag == 0x02){ 9660 // The ISO_Data_Load field contains a header and a complete SDU. 9661 if (hci_iso_sdu_complete(packet, size)) { 9662 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9663 } 9664 } else { 9665 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9666 if (iso_stream == NULL){ 9667 return; 9668 } 9669 if (size > HCI_ISO_PAYLOAD_SIZE){ 9670 return; 9671 } 9672 memcpy(iso_stream->reassembly_buffer, packet, size); 9673 // fix pb_flag 9674 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9675 iso_stream->reassembly_pos = size; 9676 } 9677 } else { 9678 // iso_data_load contains continuation or last fragment of an SDU 9679 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9680 if (ts_flag != 0){ 9681 return; 9682 } 9683 // append fragment 9684 if (iso_stream == NULL){ 9685 return; 9686 } 9687 if (iso_stream->reassembly_pos == 0){ 9688 return; 9689 } 9690 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9691 // reset reassembly buffer 9692 iso_stream->reassembly_pos = 0; 9693 return; 9694 } 9695 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9696 iso_stream->reassembly_pos += iso_data_len; 9697 9698 // deliver if last fragment and SDU complete 9699 if (pb_flag == 0x03){ 9700 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9701 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9702 } 9703 iso_stream->reassembly_pos = 0; 9704 } 9705 } 9706 } 9707 9708 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9709 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9710 uint16_t pos = 0; 9711 event[pos++] = HCI_EVENT_META_GAP; 9712 event[pos++] = 4 + (2 * big->num_bis); 9713 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9714 event[pos++] = status; 9715 event[pos++] = big->big_handle; 9716 event[pos++] = big->num_bis; 9717 uint8_t i; 9718 for (i=0;i<big->num_bis;i++){ 9719 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9720 pos += 2; 9721 } 9722 hci_emit_event(event, pos, 0); 9723 } 9724 9725 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9726 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9727 uint16_t pos = 0; 9728 event[pos++] = HCI_EVENT_META_GAP; 9729 event[pos++] = 4 + (2 * cig->num_cis); 9730 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9731 event[pos++] = status; 9732 event[pos++] = cig->cig_id; 9733 event[pos++] = cig->num_cis; 9734 uint8_t i; 9735 for (i=0;i<cig->num_cis;i++){ 9736 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9737 pos += 2; 9738 } 9739 hci_emit_event(event, pos, 0); 9740 } 9741 9742 static void hci_emit_cis_created(uint8_t status, uint8_t cig_id, uint8_t cis_id, hci_con_handle_t cis_con_handle, 9743 hci_con_handle_t acl_con_handle) { 9744 uint8_t event [10]; 9745 uint16_t pos = 0; 9746 event[pos++] = HCI_EVENT_META_GAP; 9747 event[pos++] = 8; 9748 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9749 event[pos++] = status; 9750 event[pos++] = cig_id; 9751 event[pos++] = cis_id; 9752 little_endian_store_16(event, pos, cis_con_handle); 9753 pos += 2; 9754 little_endian_store_16(event, pos, acl_con_handle); 9755 pos += 2; 9756 hci_emit_event(event, pos, 0); 9757 } 9758 9759 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 9760 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 9761 // cache data before finalizing struct 9762 uint8_t cig_id = iso_stream->group_id; 9763 uint8_t cis_id = iso_stream->stream_id; 9764 hci_con_handle_t cis_handle = iso_stream->cis_handle; 9765 hci_con_handle_t acl_handle = iso_stream->acl_handle; 9766 if (status != ERROR_CODE_SUCCESS){ 9767 hci_iso_stream_finalize(iso_stream); 9768 } 9769 hci_emit_cis_created(status, cig_id, cis_id, cis_handle, acl_handle); 9770 } 9771 9772 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9773 uint8_t event [4]; 9774 uint16_t pos = 0; 9775 event[pos++] = HCI_EVENT_META_GAP; 9776 event[pos++] = 2; 9777 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9778 event[pos++] = big->big_handle; 9779 hci_emit_event(event, pos, 0); 9780 } 9781 9782 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9783 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9784 uint16_t pos = 0; 9785 event[pos++] = HCI_EVENT_META_GAP; 9786 event[pos++] = 4; 9787 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9788 event[pos++] = status; 9789 event[pos++] = big_sync->big_handle; 9790 event[pos++] = big_sync->num_bis; 9791 uint8_t i; 9792 for (i=0;i<big_sync->num_bis;i++){ 9793 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9794 pos += 2; 9795 } 9796 hci_emit_event(event, pos, 0); 9797 } 9798 9799 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9800 uint8_t event [4]; 9801 uint16_t pos = 0; 9802 event[pos++] = HCI_EVENT_META_GAP; 9803 event[pos++] = 2; 9804 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9805 event[pos++] = big_handle; 9806 hci_emit_event(event, pos, 0); 9807 } 9808 9809 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9810 uint8_t event[6]; 9811 uint16_t pos = 0; 9812 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9813 event[pos++] = sizeof(event) - 2; 9814 event[pos++] = big->big_handle; 9815 event[pos++] = bis_index; 9816 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9817 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9818 } 9819 9820 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9821 uint8_t event[4]; 9822 uint16_t pos = 0; 9823 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9824 event[pos++] = sizeof(event) - 2; 9825 little_endian_store_16(event, pos, cis_con_handle); 9826 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9827 } 9828 9829 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9830 btstack_linked_list_iterator_t it; 9831 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9832 while (btstack_linked_list_iterator_has_next(&it)){ 9833 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9834 if ( big->big_handle == big_handle ) { 9835 return big; 9836 } 9837 } 9838 return NULL; 9839 } 9840 9841 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9842 btstack_linked_list_iterator_t it; 9843 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9844 while (btstack_linked_list_iterator_has_next(&it)){ 9845 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9846 if ( big_sync->big_handle == big_handle ) { 9847 return big_sync; 9848 } 9849 } 9850 return NULL; 9851 } 9852 9853 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9854 hci_stack->iso_packets_to_queue = num_packets; 9855 } 9856 9857 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9858 btstack_linked_list_iterator_t it; 9859 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9860 while (btstack_linked_list_iterator_has_next(&it)){ 9861 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9862 if ( cig->cig_id == cig_id ) { 9863 return cig; 9864 } 9865 } 9866 return NULL; 9867 } 9868 9869 static void hci_iso_notify_can_send_now(void){ 9870 9871 // BIG 9872 9873 btstack_linked_list_iterator_t it; 9874 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9875 while (btstack_linked_list_iterator_has_next(&it)){ 9876 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9877 // track number completed packet timestamps 9878 if (big->num_completed_timestamp_current_valid){ 9879 big->num_completed_timestamp_current_valid = false; 9880 if (big->num_completed_timestamp_previous_valid){ 9881 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9882 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9883 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9884 big->num_completed_timestamp_previous_ms); 9885 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9886 // to catch up, skip packet on all BIS 9887 uint8_t i; 9888 for (i=0;i<big->num_bis;i++){ 9889 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9890 if (iso_stream){ 9891 iso_stream->num_packets_to_skip++; 9892 } 9893 } 9894 } 9895 } 9896 big->num_completed_timestamp_previous_valid = true; 9897 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9898 } 9899 9900 if (big->can_send_now_requested){ 9901 // check if no outgoing iso packets pending and no can send now have to be emitted 9902 uint8_t i; 9903 bool can_send = true; 9904 uint8_t num_iso_queued_minimum = 0; 9905 for (i=0;i<big->num_bis;i++){ 9906 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9907 if (iso_stream == NULL) continue; 9908 // handle case where individual ISO packet was sent too late: 9909 // for each additionally queued packet, a new one needs to get skipped 9910 if (i==0){ 9911 num_iso_queued_minimum = iso_stream->num_packets_sent; 9912 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 9913 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 9914 iso_stream->num_packets_to_skip += num_packets_to_skip; 9915 iso_stream->num_packets_sent -= num_packets_to_skip; 9916 } 9917 // check if we can send now 9918 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 9919 can_send = false; 9920 break; 9921 } 9922 } 9923 if (can_send){ 9924 // propagate can send now to individual streams 9925 big->can_send_now_requested = false; 9926 for (i=0;i<big->num_bis;i++){ 9927 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9928 iso_stream->emit_ready_to_send = true; 9929 } 9930 } 9931 } 9932 } 9933 9934 if (hci_stack->hci_packet_buffer_reserved) return; 9935 9936 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9937 while (btstack_linked_list_iterator_has_next(&it)){ 9938 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9939 // report bis ready 9940 uint8_t i; 9941 for (i=0;i<big->num_bis;i++){ 9942 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9943 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9944 iso_stream->emit_ready_to_send = false; 9945 hci_emit_bis_can_send_now(big, i); 9946 break; 9947 } 9948 } 9949 } 9950 9951 // CIS 9952 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9953 while (btstack_linked_list_iterator_has_next(&it)) { 9954 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9955 if ((iso_stream->can_send_now_requested) && 9956 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 9957 iso_stream->can_send_now_requested = false; 9958 hci_emit_cis_can_send_now(iso_stream->cis_handle); 9959 } 9960 } 9961 } 9962 9963 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9964 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9965 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9966 } 9967 if (big_params->num_bis == 0){ 9968 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9969 } 9970 if (big_params->num_bis > MAX_NR_BIS){ 9971 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9972 } 9973 9974 // reserve ISO Streams 9975 uint8_t i; 9976 uint8_t status = ERROR_CODE_SUCCESS; 9977 for (i=0;i<big_params->num_bis;i++){ 9978 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_params->big_handle, i); 9979 if (iso_stream == NULL) { 9980 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 9981 break; 9982 } 9983 } 9984 9985 // free structs on error 9986 if (status != ERROR_CODE_SUCCESS){ 9987 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 9988 return status; 9989 } 9990 9991 le_audio_big_t * big = storage; 9992 big->big_handle = big_params->big_handle; 9993 big->params = big_params; 9994 big->state = LE_AUDIO_BIG_STATE_CREATE; 9995 big->num_bis = big_params->num_bis; 9996 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9997 9998 hci_run(); 9999 10000 return ERROR_CODE_SUCCESS; 10001 } 10002 10003 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10004 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 10005 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10006 } 10007 if (big_sync_params->num_bis == 0){ 10008 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10009 } 10010 if (big_sync_params->num_bis > MAX_NR_BIS){ 10011 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10012 } 10013 10014 le_audio_big_sync_t * big_sync = storage; 10015 big_sync->big_handle = big_sync_params->big_handle; 10016 big_sync->params = big_sync_params; 10017 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10018 big_sync->num_bis = big_sync_params->num_bis; 10019 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10020 10021 hci_run(); 10022 10023 return ERROR_CODE_SUCCESS; 10024 } 10025 10026 uint8_t gap_big_terminate(uint8_t big_handle){ 10027 le_audio_big_t * big = hci_big_for_handle(big_handle); 10028 if (big == NULL){ 10029 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10030 } 10031 switch (big->state){ 10032 case LE_AUDIO_BIG_STATE_CREATE: 10033 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10034 hci_emit_big_terminated(big); 10035 break; 10036 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10037 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10038 break; 10039 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10040 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10041 case LE_AUDIO_BIG_STATE_ACTIVE: 10042 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10043 hci_run(); 10044 break; 10045 default: 10046 return ERROR_CODE_COMMAND_DISALLOWED; 10047 } 10048 return ERROR_CODE_SUCCESS; 10049 } 10050 10051 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10052 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10053 if (big_sync == NULL){ 10054 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10055 } 10056 switch (big_sync->state){ 10057 case LE_AUDIO_BIG_STATE_CREATE: 10058 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10059 hci_emit_big_sync_stopped(big_handle); 10060 break; 10061 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10062 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10063 break; 10064 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10065 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10066 case LE_AUDIO_BIG_STATE_ACTIVE: 10067 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10068 hci_run(); 10069 break; 10070 default: 10071 return ERROR_CODE_COMMAND_DISALLOWED; 10072 } 10073 return ERROR_CODE_SUCCESS; 10074 } 10075 10076 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10077 le_audio_big_t * big = hci_big_for_handle(big_handle); 10078 if (big == NULL){ 10079 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10080 } 10081 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10082 return ERROR_CODE_COMMAND_DISALLOWED; 10083 } 10084 big->can_send_now_requested = true; 10085 hci_iso_notify_can_send_now(); 10086 return ERROR_CODE_SUCCESS; 10087 } 10088 10089 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10090 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10091 if (iso_stream == NULL){ 10092 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10093 } 10094 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10095 return ERROR_CODE_COMMAND_DISALLOWED; 10096 } 10097 iso_stream->can_send_now_requested = true; 10098 hci_iso_notify_can_send_now(); 10099 return ERROR_CODE_SUCCESS; 10100 } 10101 10102 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10103 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10104 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10105 } 10106 if (cig_params->num_cis == 0){ 10107 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10108 } 10109 if (cig_params->num_cis > MAX_NR_BIS){ 10110 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10111 } 10112 10113 // reserve ISO Streams 10114 uint8_t i; 10115 uint8_t status = ERROR_CODE_SUCCESS; 10116 for (i=0;i<cig_params->num_cis;i++){ 10117 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10118 if (iso_stream == NULL) { 10119 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10120 break; 10121 } 10122 } 10123 10124 // free structs on error 10125 if (status != ERROR_CODE_SUCCESS){ 10126 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10127 return status; 10128 } 10129 10130 le_audio_cig_t * cig = storage; 10131 cig->cig_id = cig_params->cig_id; 10132 cig->num_cis = cig_params->num_cis; 10133 cig->params = cig_params; 10134 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10135 for (i=0;i<cig->num_cis;i++){ 10136 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10137 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10138 cig->cis_setup_active[i] = false; 10139 cig->cis_established[i] = false; 10140 } 10141 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10142 10143 hci_run(); 10144 10145 return ERROR_CODE_SUCCESS; 10146 } 10147 10148 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10149 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10150 if (cig == NULL){ 10151 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10152 } 10153 10154 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10155 return ERROR_CODE_COMMAND_DISALLOWED; 10156 } 10157 10158 // store ACL Connection Handles 10159 uint8_t i; 10160 for (i=0;i<cig->num_cis;i++){ 10161 // check that all con handles exist and store 10162 hci_con_handle_t cis_handle = cis_con_handles[i]; 10163 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10164 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10165 } 10166 uint8_t j; 10167 bool found = false; 10168 for (j=0;j<cig->num_cis;j++){ 10169 if (cig->cis_con_handles[j] == cis_handle){ 10170 cig->acl_con_handles[j] = acl_con_handles[j]; 10171 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10172 btstack_assert(iso_stream != NULL); 10173 iso_stream->acl_handle = acl_con_handles[j]; 10174 found = true; 10175 break; 10176 } 10177 } 10178 if (!found){ 10179 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10180 } 10181 } 10182 10183 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10184 hci_run(); 10185 10186 return ERROR_CODE_SUCCESS; 10187 } 10188 10189 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10190 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10191 if (iso_stream == NULL){ 10192 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10193 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10194 } 10195 10196 // set next state and continue 10197 iso_stream->state = state; 10198 hci_run(); 10199 return ERROR_CODE_SUCCESS; 10200 } 10201 10202 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10203 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10204 } 10205 10206 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10207 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10208 } 10209 10210 10211 #endif 10212 #endif /* ENABLE_BLE */ 10213 10214 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10215 void hci_setup_test_connections_fuzz(void){ 10216 hci_connection_t * conn; 10217 10218 // default address: 66:55:44:33:00:01 10219 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10220 10221 // setup Controller info 10222 hci_stack->num_cmd_packets = 255; 10223 hci_stack->acl_packets_total_num = 255; 10224 10225 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10226 addr[5] = 0x01; 10227 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10228 conn->con_handle = addr[5]; 10229 conn->state = RECEIVED_CONNECTION_REQUEST; 10230 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10231 10232 // setup incoming Classic SCO connection with con handle 0x0002 10233 addr[5] = 0x02; 10234 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10235 conn->con_handle = addr[5]; 10236 conn->state = RECEIVED_CONNECTION_REQUEST; 10237 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10238 10239 // setup ready Classic ACL connection with con handle 0x0003 10240 addr[5] = 0x03; 10241 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10242 conn->con_handle = addr[5]; 10243 conn->state = OPEN; 10244 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10245 10246 // setup ready Classic SCO connection with con handle 0x0004 10247 addr[5] = 0x04; 10248 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10249 conn->con_handle = addr[5]; 10250 conn->state = OPEN; 10251 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10252 10253 // setup ready LE ACL connection with con handle 0x005 and public address 10254 addr[5] = 0x05; 10255 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10256 conn->con_handle = addr[5]; 10257 conn->state = OPEN; 10258 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10259 conn->sm_connection.sm_connection_encrypted = 1; 10260 } 10261 10262 void hci_free_connections_fuzz(void){ 10263 btstack_linked_list_iterator_t it; 10264 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10265 while (btstack_linked_list_iterator_has_next(&it)){ 10266 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10267 btstack_linked_list_iterator_remove(&it); 10268 btstack_memory_hci_connection_free(con); 10269 } 10270 } 10271 void hci_simulate_working_fuzz(void){ 10272 hci_stack->le_scanning_param_update = false; 10273 hci_init_done(); 10274 hci_stack->num_cmd_packets = 255; 10275 } 10276 #endif 10277