1 /* 2 BlueZ - Bluetooth protocol stack for Linux 3 4 Copyright (C) 2010 Nokia Corporation 5 Copyright (C) 2011-2012 Intel Corporation 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License version 2 as 9 published by the Free Software Foundation; 10 11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. 14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY 15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 22 SOFTWARE IS DISCLAIMED. 23 */ 24 25 /* Bluetooth HCI Management interface */ 26 27 #include <linux/module.h> 28 #include <asm/unaligned.h> 29 30 #include <net/bluetooth/bluetooth.h> 31 #include <net/bluetooth/hci_core.h> 32 #include <net/bluetooth/hci_sock.h> 33 #include <net/bluetooth/l2cap.h> 34 #include <net/bluetooth/mgmt.h> 35 36 #include "hci_request.h" 37 #include "smp.h" 38 #include "mgmt_util.h" 39 40 #define MGMT_VERSION 1 41 #define MGMT_REVISION 10 42 43 static const u16 mgmt_commands[] = { 44 MGMT_OP_READ_INDEX_LIST, 45 MGMT_OP_READ_INFO, 46 MGMT_OP_SET_POWERED, 47 MGMT_OP_SET_DISCOVERABLE, 48 MGMT_OP_SET_CONNECTABLE, 49 MGMT_OP_SET_FAST_CONNECTABLE, 50 MGMT_OP_SET_BONDABLE, 51 MGMT_OP_SET_LINK_SECURITY, 52 MGMT_OP_SET_SSP, 53 MGMT_OP_SET_HS, 54 MGMT_OP_SET_LE, 55 MGMT_OP_SET_DEV_CLASS, 56 MGMT_OP_SET_LOCAL_NAME, 57 MGMT_OP_ADD_UUID, 58 MGMT_OP_REMOVE_UUID, 59 MGMT_OP_LOAD_LINK_KEYS, 60 MGMT_OP_LOAD_LONG_TERM_KEYS, 61 MGMT_OP_DISCONNECT, 62 MGMT_OP_GET_CONNECTIONS, 63 MGMT_OP_PIN_CODE_REPLY, 64 MGMT_OP_PIN_CODE_NEG_REPLY, 65 MGMT_OP_SET_IO_CAPABILITY, 66 MGMT_OP_PAIR_DEVICE, 67 MGMT_OP_CANCEL_PAIR_DEVICE, 68 MGMT_OP_UNPAIR_DEVICE, 69 MGMT_OP_USER_CONFIRM_REPLY, 70 MGMT_OP_USER_CONFIRM_NEG_REPLY, 71 MGMT_OP_USER_PASSKEY_REPLY, 72 MGMT_OP_USER_PASSKEY_NEG_REPLY, 73 MGMT_OP_READ_LOCAL_OOB_DATA, 74 MGMT_OP_ADD_REMOTE_OOB_DATA, 75 MGMT_OP_REMOVE_REMOTE_OOB_DATA, 76 MGMT_OP_START_DISCOVERY, 77 MGMT_OP_STOP_DISCOVERY, 78 MGMT_OP_CONFIRM_NAME, 79 MGMT_OP_BLOCK_DEVICE, 80 MGMT_OP_UNBLOCK_DEVICE, 81 MGMT_OP_SET_DEVICE_ID, 82 MGMT_OP_SET_ADVERTISING, 83 MGMT_OP_SET_BREDR, 84 MGMT_OP_SET_STATIC_ADDRESS, 85 MGMT_OP_SET_SCAN_PARAMS, 86 MGMT_OP_SET_SECURE_CONN, 87 MGMT_OP_SET_DEBUG_KEYS, 88 MGMT_OP_SET_PRIVACY, 89 MGMT_OP_LOAD_IRKS, 90 MGMT_OP_GET_CONN_INFO, 91 MGMT_OP_GET_CLOCK_INFO, 92 MGMT_OP_ADD_DEVICE, 93 MGMT_OP_REMOVE_DEVICE, 94 MGMT_OP_LOAD_CONN_PARAM, 95 MGMT_OP_READ_UNCONF_INDEX_LIST, 96 MGMT_OP_READ_CONFIG_INFO, 97 MGMT_OP_SET_EXTERNAL_CONFIG, 98 MGMT_OP_SET_PUBLIC_ADDRESS, 99 MGMT_OP_START_SERVICE_DISCOVERY, 100 MGMT_OP_READ_LOCAL_OOB_EXT_DATA, 101 MGMT_OP_READ_EXT_INDEX_LIST, 102 MGMT_OP_READ_ADV_FEATURES, 103 MGMT_OP_ADD_ADVERTISING, 104 MGMT_OP_REMOVE_ADVERTISING, 105 }; 106 107 static const u16 mgmt_events[] = { 108 MGMT_EV_CONTROLLER_ERROR, 109 MGMT_EV_INDEX_ADDED, 110 MGMT_EV_INDEX_REMOVED, 111 MGMT_EV_NEW_SETTINGS, 112 MGMT_EV_CLASS_OF_DEV_CHANGED, 113 MGMT_EV_LOCAL_NAME_CHANGED, 114 MGMT_EV_NEW_LINK_KEY, 115 MGMT_EV_NEW_LONG_TERM_KEY, 116 MGMT_EV_DEVICE_CONNECTED, 117 MGMT_EV_DEVICE_DISCONNECTED, 118 MGMT_EV_CONNECT_FAILED, 119 MGMT_EV_PIN_CODE_REQUEST, 120 MGMT_EV_USER_CONFIRM_REQUEST, 121 MGMT_EV_USER_PASSKEY_REQUEST, 122 MGMT_EV_AUTH_FAILED, 123 MGMT_EV_DEVICE_FOUND, 124 MGMT_EV_DISCOVERING, 125 MGMT_EV_DEVICE_BLOCKED, 126 MGMT_EV_DEVICE_UNBLOCKED, 127 MGMT_EV_DEVICE_UNPAIRED, 128 MGMT_EV_PASSKEY_NOTIFY, 129 MGMT_EV_NEW_IRK, 130 MGMT_EV_NEW_CSRK, 131 MGMT_EV_DEVICE_ADDED, 132 MGMT_EV_DEVICE_REMOVED, 133 MGMT_EV_NEW_CONN_PARAM, 134 MGMT_EV_UNCONF_INDEX_ADDED, 135 MGMT_EV_UNCONF_INDEX_REMOVED, 136 MGMT_EV_NEW_CONFIG_OPTIONS, 137 MGMT_EV_EXT_INDEX_ADDED, 138 MGMT_EV_EXT_INDEX_REMOVED, 139 MGMT_EV_LOCAL_OOB_DATA_UPDATED, 140 MGMT_EV_ADVERTISING_ADDED, 141 MGMT_EV_ADVERTISING_REMOVED, 142 }; 143 144 static const u16 mgmt_untrusted_commands[] = { 145 MGMT_OP_READ_INDEX_LIST, 146 MGMT_OP_READ_INFO, 147 MGMT_OP_READ_UNCONF_INDEX_LIST, 148 MGMT_OP_READ_CONFIG_INFO, 149 MGMT_OP_READ_EXT_INDEX_LIST, 150 }; 151 152 static const u16 mgmt_untrusted_events[] = { 153 MGMT_EV_INDEX_ADDED, 154 MGMT_EV_INDEX_REMOVED, 155 MGMT_EV_NEW_SETTINGS, 156 MGMT_EV_CLASS_OF_DEV_CHANGED, 157 MGMT_EV_LOCAL_NAME_CHANGED, 158 MGMT_EV_UNCONF_INDEX_ADDED, 159 MGMT_EV_UNCONF_INDEX_REMOVED, 160 MGMT_EV_NEW_CONFIG_OPTIONS, 161 MGMT_EV_EXT_INDEX_ADDED, 162 MGMT_EV_EXT_INDEX_REMOVED, 163 }; 164 165 #define CACHE_TIMEOUT msecs_to_jiffies(2 * 1000) 166 167 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \ 168 "\x00\x00\x00\x00\x00\x00\x00\x00" 169 170 /* HCI to MGMT error code conversion table */ 171 static u8 mgmt_status_table[] = { 172 MGMT_STATUS_SUCCESS, 173 MGMT_STATUS_UNKNOWN_COMMAND, /* Unknown Command */ 174 MGMT_STATUS_NOT_CONNECTED, /* No Connection */ 175 MGMT_STATUS_FAILED, /* Hardware Failure */ 176 MGMT_STATUS_CONNECT_FAILED, /* Page Timeout */ 177 MGMT_STATUS_AUTH_FAILED, /* Authentication Failed */ 178 MGMT_STATUS_AUTH_FAILED, /* PIN or Key Missing */ 179 MGMT_STATUS_NO_RESOURCES, /* Memory Full */ 180 MGMT_STATUS_TIMEOUT, /* Connection Timeout */ 181 MGMT_STATUS_NO_RESOURCES, /* Max Number of Connections */ 182 MGMT_STATUS_NO_RESOURCES, /* Max Number of SCO Connections */ 183 MGMT_STATUS_ALREADY_CONNECTED, /* ACL Connection Exists */ 184 MGMT_STATUS_BUSY, /* Command Disallowed */ 185 MGMT_STATUS_NO_RESOURCES, /* Rejected Limited Resources */ 186 MGMT_STATUS_REJECTED, /* Rejected Security */ 187 MGMT_STATUS_REJECTED, /* Rejected Personal */ 188 MGMT_STATUS_TIMEOUT, /* Host Timeout */ 189 MGMT_STATUS_NOT_SUPPORTED, /* Unsupported Feature */ 190 MGMT_STATUS_INVALID_PARAMS, /* Invalid Parameters */ 191 MGMT_STATUS_DISCONNECTED, /* OE User Ended Connection */ 192 MGMT_STATUS_NO_RESOURCES, /* OE Low Resources */ 193 MGMT_STATUS_DISCONNECTED, /* OE Power Off */ 194 MGMT_STATUS_DISCONNECTED, /* Connection Terminated */ 195 MGMT_STATUS_BUSY, /* Repeated Attempts */ 196 MGMT_STATUS_REJECTED, /* Pairing Not Allowed */ 197 MGMT_STATUS_FAILED, /* Unknown LMP PDU */ 198 MGMT_STATUS_NOT_SUPPORTED, /* Unsupported Remote Feature */ 199 MGMT_STATUS_REJECTED, /* SCO Offset Rejected */ 200 MGMT_STATUS_REJECTED, /* SCO Interval Rejected */ 201 MGMT_STATUS_REJECTED, /* Air Mode Rejected */ 202 MGMT_STATUS_INVALID_PARAMS, /* Invalid LMP Parameters */ 203 MGMT_STATUS_FAILED, /* Unspecified Error */ 204 MGMT_STATUS_NOT_SUPPORTED, /* Unsupported LMP Parameter Value */ 205 MGMT_STATUS_FAILED, /* Role Change Not Allowed */ 206 MGMT_STATUS_TIMEOUT, /* LMP Response Timeout */ 207 MGMT_STATUS_FAILED, /* LMP Error Transaction Collision */ 208 MGMT_STATUS_FAILED, /* LMP PDU Not Allowed */ 209 MGMT_STATUS_REJECTED, /* Encryption Mode Not Accepted */ 210 MGMT_STATUS_FAILED, /* Unit Link Key Used */ 211 MGMT_STATUS_NOT_SUPPORTED, /* QoS Not Supported */ 212 MGMT_STATUS_TIMEOUT, /* Instant Passed */ 213 MGMT_STATUS_NOT_SUPPORTED, /* Pairing Not Supported */ 214 MGMT_STATUS_FAILED, /* Transaction Collision */ 215 MGMT_STATUS_INVALID_PARAMS, /* Unacceptable Parameter */ 216 MGMT_STATUS_REJECTED, /* QoS Rejected */ 217 MGMT_STATUS_NOT_SUPPORTED, /* Classification Not Supported */ 218 MGMT_STATUS_REJECTED, /* Insufficient Security */ 219 MGMT_STATUS_INVALID_PARAMS, /* Parameter Out Of Range */ 220 MGMT_STATUS_BUSY, /* Role Switch Pending */ 221 MGMT_STATUS_FAILED, /* Slot Violation */ 222 MGMT_STATUS_FAILED, /* Role Switch Failed */ 223 MGMT_STATUS_INVALID_PARAMS, /* EIR Too Large */ 224 MGMT_STATUS_NOT_SUPPORTED, /* Simple Pairing Not Supported */ 225 MGMT_STATUS_BUSY, /* Host Busy Pairing */ 226 MGMT_STATUS_REJECTED, /* Rejected, No Suitable Channel */ 227 MGMT_STATUS_BUSY, /* Controller Busy */ 228 MGMT_STATUS_INVALID_PARAMS, /* Unsuitable Connection Interval */ 229 MGMT_STATUS_TIMEOUT, /* Directed Advertising Timeout */ 230 MGMT_STATUS_AUTH_FAILED, /* Terminated Due to MIC Failure */ 231 MGMT_STATUS_CONNECT_FAILED, /* Connection Establishment Failed */ 232 MGMT_STATUS_CONNECT_FAILED, /* MAC Connection Failed */ 233 }; 234 235 static u8 mgmt_status(u8 hci_status) 236 { 237 if (hci_status < ARRAY_SIZE(mgmt_status_table)) 238 return mgmt_status_table[hci_status]; 239 240 return MGMT_STATUS_FAILED; 241 } 242 243 static int mgmt_index_event(u16 event, struct hci_dev *hdev, void *data, 244 u16 len, int flag) 245 { 246 return mgmt_send_event(event, hdev, HCI_CHANNEL_CONTROL, data, len, 247 flag, NULL); 248 } 249 250 static int mgmt_limited_event(u16 event, struct hci_dev *hdev, void *data, 251 u16 len, int flag, struct sock *skip_sk) 252 { 253 return mgmt_send_event(event, hdev, HCI_CHANNEL_CONTROL, data, len, 254 flag, skip_sk); 255 } 256 257 static int mgmt_generic_event(u16 event, struct hci_dev *hdev, void *data, 258 u16 len, struct sock *skip_sk) 259 { 260 return mgmt_send_event(event, hdev, HCI_CHANNEL_CONTROL, data, len, 261 HCI_MGMT_GENERIC_EVENTS, skip_sk); 262 } 263 264 static int mgmt_event(u16 event, struct hci_dev *hdev, void *data, u16 len, 265 struct sock *skip_sk) 266 { 267 return mgmt_send_event(event, hdev, HCI_CHANNEL_CONTROL, data, len, 268 HCI_SOCK_TRUSTED, skip_sk); 269 } 270 271 static int read_version(struct sock *sk, struct hci_dev *hdev, void *data, 272 u16 data_len) 273 { 274 struct mgmt_rp_read_version rp; 275 276 BT_DBG("sock %p", sk); 277 278 rp.version = MGMT_VERSION; 279 rp.revision = cpu_to_le16(MGMT_REVISION); 280 281 return mgmt_cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_VERSION, 0, 282 &rp, sizeof(rp)); 283 } 284 285 static int read_commands(struct sock *sk, struct hci_dev *hdev, void *data, 286 u16 data_len) 287 { 288 struct mgmt_rp_read_commands *rp; 289 u16 num_commands, num_events; 290 size_t rp_size; 291 int i, err; 292 293 BT_DBG("sock %p", sk); 294 295 if (hci_sock_test_flag(sk, HCI_SOCK_TRUSTED)) { 296 num_commands = ARRAY_SIZE(mgmt_commands); 297 num_events = ARRAY_SIZE(mgmt_events); 298 } else { 299 num_commands = ARRAY_SIZE(mgmt_untrusted_commands); 300 num_events = ARRAY_SIZE(mgmt_untrusted_events); 301 } 302 303 rp_size = sizeof(*rp) + ((num_commands + num_events) * sizeof(u16)); 304 305 rp = kmalloc(rp_size, GFP_KERNEL); 306 if (!rp) 307 return -ENOMEM; 308 309 rp->num_commands = cpu_to_le16(num_commands); 310 rp->num_events = cpu_to_le16(num_events); 311 312 if (hci_sock_test_flag(sk, HCI_SOCK_TRUSTED)) { 313 __le16 *opcode = rp->opcodes; 314 315 for (i = 0; i < num_commands; i++, opcode++) 316 put_unaligned_le16(mgmt_commands[i], opcode); 317 318 for (i = 0; i < num_events; i++, opcode++) 319 put_unaligned_le16(mgmt_events[i], opcode); 320 } else { 321 __le16 *opcode = rp->opcodes; 322 323 for (i = 0; i < num_commands; i++, opcode++) 324 put_unaligned_le16(mgmt_untrusted_commands[i], opcode); 325 326 for (i = 0; i < num_events; i++, opcode++) 327 put_unaligned_le16(mgmt_untrusted_events[i], opcode); 328 } 329 330 err = mgmt_cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_COMMANDS, 0, 331 rp, rp_size); 332 kfree(rp); 333 334 return err; 335 } 336 337 static int read_index_list(struct sock *sk, struct hci_dev *hdev, void *data, 338 u16 data_len) 339 { 340 struct mgmt_rp_read_index_list *rp; 341 struct hci_dev *d; 342 size_t rp_len; 343 u16 count; 344 int err; 345 346 BT_DBG("sock %p", sk); 347 348 read_lock(&hci_dev_list_lock); 349 350 count = 0; 351 list_for_each_entry(d, &hci_dev_list, list) { 352 if (d->dev_type == HCI_BREDR && 353 !hci_dev_test_flag(d, HCI_UNCONFIGURED)) 354 count++; 355 } 356 357 rp_len = sizeof(*rp) + (2 * count); 358 rp = kmalloc(rp_len, GFP_ATOMIC); 359 if (!rp) { 360 read_unlock(&hci_dev_list_lock); 361 return -ENOMEM; 362 } 363 364 count = 0; 365 list_for_each_entry(d, &hci_dev_list, list) { 366 if (hci_dev_test_flag(d, HCI_SETUP) || 367 hci_dev_test_flag(d, HCI_CONFIG) || 368 hci_dev_test_flag(d, HCI_USER_CHANNEL)) 369 continue; 370 371 /* Devices marked as raw-only are neither configured 372 * nor unconfigured controllers. 373 */ 374 if (test_bit(HCI_QUIRK_RAW_DEVICE, &d->quirks)) 375 continue; 376 377 if (d->dev_type == HCI_BREDR && 378 !hci_dev_test_flag(d, HCI_UNCONFIGURED)) { 379 rp->index[count++] = cpu_to_le16(d->id); 380 BT_DBG("Added hci%u", d->id); 381 } 382 } 383 384 rp->num_controllers = cpu_to_le16(count); 385 rp_len = sizeof(*rp) + (2 * count); 386 387 read_unlock(&hci_dev_list_lock); 388 389 err = mgmt_cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_INDEX_LIST, 390 0, rp, rp_len); 391 392 kfree(rp); 393 394 return err; 395 } 396 397 static int read_unconf_index_list(struct sock *sk, struct hci_dev *hdev, 398 void *data, u16 data_len) 399 { 400 struct mgmt_rp_read_unconf_index_list *rp; 401 struct hci_dev *d; 402 size_t rp_len; 403 u16 count; 404 int err; 405 406 BT_DBG("sock %p", sk); 407 408 read_lock(&hci_dev_list_lock); 409 410 count = 0; 411 list_for_each_entry(d, &hci_dev_list, list) { 412 if (d->dev_type == HCI_BREDR && 413 hci_dev_test_flag(d, HCI_UNCONFIGURED)) 414 count++; 415 } 416 417 rp_len = sizeof(*rp) + (2 * count); 418 rp = kmalloc(rp_len, GFP_ATOMIC); 419 if (!rp) { 420 read_unlock(&hci_dev_list_lock); 421 return -ENOMEM; 422 } 423 424 count = 0; 425 list_for_each_entry(d, &hci_dev_list, list) { 426 if (hci_dev_test_flag(d, HCI_SETUP) || 427 hci_dev_test_flag(d, HCI_CONFIG) || 428 hci_dev_test_flag(d, HCI_USER_CHANNEL)) 429 continue; 430 431 /* Devices marked as raw-only are neither configured 432 * nor unconfigured controllers. 433 */ 434 if (test_bit(HCI_QUIRK_RAW_DEVICE, &d->quirks)) 435 continue; 436 437 if (d->dev_type == HCI_BREDR && 438 hci_dev_test_flag(d, HCI_UNCONFIGURED)) { 439 rp->index[count++] = cpu_to_le16(d->id); 440 BT_DBG("Added hci%u", d->id); 441 } 442 } 443 444 rp->num_controllers = cpu_to_le16(count); 445 rp_len = sizeof(*rp) + (2 * count); 446 447 read_unlock(&hci_dev_list_lock); 448 449 err = mgmt_cmd_complete(sk, MGMT_INDEX_NONE, 450 MGMT_OP_READ_UNCONF_INDEX_LIST, 0, rp, rp_len); 451 452 kfree(rp); 453 454 return err; 455 } 456 457 static int read_ext_index_list(struct sock *sk, struct hci_dev *hdev, 458 void *data, u16 data_len) 459 { 460 struct mgmt_rp_read_ext_index_list *rp; 461 struct hci_dev *d; 462 size_t rp_len; 463 u16 count; 464 int err; 465 466 BT_DBG("sock %p", sk); 467 468 read_lock(&hci_dev_list_lock); 469 470 count = 0; 471 list_for_each_entry(d, &hci_dev_list, list) { 472 if (d->dev_type == HCI_BREDR || d->dev_type == HCI_AMP) 473 count++; 474 } 475 476 rp_len = sizeof(*rp) + (sizeof(rp->entry[0]) * count); 477 rp = kmalloc(rp_len, GFP_ATOMIC); 478 if (!rp) { 479 read_unlock(&hci_dev_list_lock); 480 return -ENOMEM; 481 } 482 483 count = 0; 484 list_for_each_entry(d, &hci_dev_list, list) { 485 if (hci_dev_test_flag(d, HCI_SETUP) || 486 hci_dev_test_flag(d, HCI_CONFIG) || 487 hci_dev_test_flag(d, HCI_USER_CHANNEL)) 488 continue; 489 490 /* Devices marked as raw-only are neither configured 491 * nor unconfigured controllers. 492 */ 493 if (test_bit(HCI_QUIRK_RAW_DEVICE, &d->quirks)) 494 continue; 495 496 if (d->dev_type == HCI_BREDR) { 497 if (hci_dev_test_flag(d, HCI_UNCONFIGURED)) 498 rp->entry[count].type = 0x01; 499 else 500 rp->entry[count].type = 0x00; 501 } else if (d->dev_type == HCI_AMP) { 502 rp->entry[count].type = 0x02; 503 } else { 504 continue; 505 } 506 507 rp->entry[count].bus = d->bus; 508 rp->entry[count++].index = cpu_to_le16(d->id); 509 BT_DBG("Added hci%u", d->id); 510 } 511 512 rp->num_controllers = cpu_to_le16(count); 513 rp_len = sizeof(*rp) + (sizeof(rp->entry[0]) * count); 514 515 read_unlock(&hci_dev_list_lock); 516 517 /* If this command is called at least once, then all the 518 * default index and unconfigured index events are disabled 519 * and from now on only extended index events are used. 520 */ 521 hci_sock_set_flag(sk, HCI_MGMT_EXT_INDEX_EVENTS); 522 hci_sock_clear_flag(sk, HCI_MGMT_INDEX_EVENTS); 523 hci_sock_clear_flag(sk, HCI_MGMT_UNCONF_INDEX_EVENTS); 524 525 err = mgmt_cmd_complete(sk, MGMT_INDEX_NONE, 526 MGMT_OP_READ_EXT_INDEX_LIST, 0, rp, rp_len); 527 528 kfree(rp); 529 530 return err; 531 } 532 533 static bool is_configured(struct hci_dev *hdev) 534 { 535 if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) && 536 !hci_dev_test_flag(hdev, HCI_EXT_CONFIGURED)) 537 return false; 538 539 if (test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks) && 540 !bacmp(&hdev->public_addr, BDADDR_ANY)) 541 return false; 542 543 return true; 544 } 545 546 static __le32 get_missing_options(struct hci_dev *hdev) 547 { 548 u32 options = 0; 549 550 if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) && 551 !hci_dev_test_flag(hdev, HCI_EXT_CONFIGURED)) 552 options |= MGMT_OPTION_EXTERNAL_CONFIG; 553 554 if (test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks) && 555 !bacmp(&hdev->public_addr, BDADDR_ANY)) 556 options |= MGMT_OPTION_PUBLIC_ADDRESS; 557 558 return cpu_to_le32(options); 559 } 560 561 static int new_options(struct hci_dev *hdev, struct sock *skip) 562 { 563 __le32 options = get_missing_options(hdev); 564 565 return mgmt_generic_event(MGMT_EV_NEW_CONFIG_OPTIONS, hdev, &options, 566 sizeof(options), skip); 567 } 568 569 static int send_options_rsp(struct sock *sk, u16 opcode, struct hci_dev *hdev) 570 { 571 __le32 options = get_missing_options(hdev); 572 573 return mgmt_cmd_complete(sk, hdev->id, opcode, 0, &options, 574 sizeof(options)); 575 } 576 577 static int read_config_info(struct sock *sk, struct hci_dev *hdev, 578 void *data, u16 data_len) 579 { 580 struct mgmt_rp_read_config_info rp; 581 u32 options = 0; 582 583 BT_DBG("sock %p %s", sk, hdev->name); 584 585 hci_dev_lock(hdev); 586 587 memset(&rp, 0, sizeof(rp)); 588 rp.manufacturer = cpu_to_le16(hdev->manufacturer); 589 590 if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks)) 591 options |= MGMT_OPTION_EXTERNAL_CONFIG; 592 593 if (hdev->set_bdaddr) 594 options |= MGMT_OPTION_PUBLIC_ADDRESS; 595 596 rp.supported_options = cpu_to_le32(options); 597 rp.missing_options = get_missing_options(hdev); 598 599 hci_dev_unlock(hdev); 600 601 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_CONFIG_INFO, 0, 602 &rp, sizeof(rp)); 603 } 604 605 static u32 get_supported_settings(struct hci_dev *hdev) 606 { 607 u32 settings = 0; 608 609 settings |= MGMT_SETTING_POWERED; 610 settings |= MGMT_SETTING_BONDABLE; 611 settings |= MGMT_SETTING_DEBUG_KEYS; 612 settings |= MGMT_SETTING_CONNECTABLE; 613 settings |= MGMT_SETTING_DISCOVERABLE; 614 615 if (lmp_bredr_capable(hdev)) { 616 if (hdev->hci_ver >= BLUETOOTH_VER_1_2) 617 settings |= MGMT_SETTING_FAST_CONNECTABLE; 618 settings |= MGMT_SETTING_BREDR; 619 settings |= MGMT_SETTING_LINK_SECURITY; 620 621 if (lmp_ssp_capable(hdev)) { 622 settings |= MGMT_SETTING_SSP; 623 settings |= MGMT_SETTING_HS; 624 } 625 626 if (lmp_sc_capable(hdev)) 627 settings |= MGMT_SETTING_SECURE_CONN; 628 } 629 630 if (lmp_le_capable(hdev)) { 631 settings |= MGMT_SETTING_LE; 632 settings |= MGMT_SETTING_ADVERTISING; 633 settings |= MGMT_SETTING_SECURE_CONN; 634 settings |= MGMT_SETTING_PRIVACY; 635 settings |= MGMT_SETTING_STATIC_ADDRESS; 636 } 637 638 if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) || 639 hdev->set_bdaddr) 640 settings |= MGMT_SETTING_CONFIGURATION; 641 642 return settings; 643 } 644 645 static u32 get_current_settings(struct hci_dev *hdev) 646 { 647 u32 settings = 0; 648 649 if (hdev_is_powered(hdev)) 650 settings |= MGMT_SETTING_POWERED; 651 652 if (hci_dev_test_flag(hdev, HCI_CONNECTABLE)) 653 settings |= MGMT_SETTING_CONNECTABLE; 654 655 if (hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE)) 656 settings |= MGMT_SETTING_FAST_CONNECTABLE; 657 658 if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE)) 659 settings |= MGMT_SETTING_DISCOVERABLE; 660 661 if (hci_dev_test_flag(hdev, HCI_BONDABLE)) 662 settings |= MGMT_SETTING_BONDABLE; 663 664 if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) 665 settings |= MGMT_SETTING_BREDR; 666 667 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) 668 settings |= MGMT_SETTING_LE; 669 670 if (hci_dev_test_flag(hdev, HCI_LINK_SECURITY)) 671 settings |= MGMT_SETTING_LINK_SECURITY; 672 673 if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) 674 settings |= MGMT_SETTING_SSP; 675 676 if (hci_dev_test_flag(hdev, HCI_HS_ENABLED)) 677 settings |= MGMT_SETTING_HS; 678 679 if (hci_dev_test_flag(hdev, HCI_ADVERTISING)) 680 settings |= MGMT_SETTING_ADVERTISING; 681 682 if (hci_dev_test_flag(hdev, HCI_SC_ENABLED)) 683 settings |= MGMT_SETTING_SECURE_CONN; 684 685 if (hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) 686 settings |= MGMT_SETTING_DEBUG_KEYS; 687 688 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) 689 settings |= MGMT_SETTING_PRIVACY; 690 691 /* The current setting for static address has two purposes. The 692 * first is to indicate if the static address will be used and 693 * the second is to indicate if it is actually set. 694 * 695 * This means if the static address is not configured, this flag 696 * will never be set. If the address is configured, then if the 697 * address is actually used decides if the flag is set or not. 698 * 699 * For single mode LE only controllers and dual-mode controllers 700 * with BR/EDR disabled, the existence of the static address will 701 * be evaluated. 702 */ 703 if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) || 704 !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) || 705 !bacmp(&hdev->bdaddr, BDADDR_ANY)) { 706 if (bacmp(&hdev->static_addr, BDADDR_ANY)) 707 settings |= MGMT_SETTING_STATIC_ADDRESS; 708 } 709 710 return settings; 711 } 712 713 #define PNP_INFO_SVCLASS_ID 0x1200 714 715 static u8 *create_uuid16_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len) 716 { 717 u8 *ptr = data, *uuids_start = NULL; 718 struct bt_uuid *uuid; 719 720 if (len < 4) 721 return ptr; 722 723 list_for_each_entry(uuid, &hdev->uuids, list) { 724 u16 uuid16; 725 726 if (uuid->size != 16) 727 continue; 728 729 uuid16 = get_unaligned_le16(&uuid->uuid[12]); 730 if (uuid16 < 0x1100) 731 continue; 732 733 if (uuid16 == PNP_INFO_SVCLASS_ID) 734 continue; 735 736 if (!uuids_start) { 737 uuids_start = ptr; 738 uuids_start[0] = 1; 739 uuids_start[1] = EIR_UUID16_ALL; 740 ptr += 2; 741 } 742 743 /* Stop if not enough space to put next UUID */ 744 if ((ptr - data) + sizeof(u16) > len) { 745 uuids_start[1] = EIR_UUID16_SOME; 746 break; 747 } 748 749 *ptr++ = (uuid16 & 0x00ff); 750 *ptr++ = (uuid16 & 0xff00) >> 8; 751 uuids_start[0] += sizeof(uuid16); 752 } 753 754 return ptr; 755 } 756 757 static u8 *create_uuid32_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len) 758 { 759 u8 *ptr = data, *uuids_start = NULL; 760 struct bt_uuid *uuid; 761 762 if (len < 6) 763 return ptr; 764 765 list_for_each_entry(uuid, &hdev->uuids, list) { 766 if (uuid->size != 32) 767 continue; 768 769 if (!uuids_start) { 770 uuids_start = ptr; 771 uuids_start[0] = 1; 772 uuids_start[1] = EIR_UUID32_ALL; 773 ptr += 2; 774 } 775 776 /* Stop if not enough space to put next UUID */ 777 if ((ptr - data) + sizeof(u32) > len) { 778 uuids_start[1] = EIR_UUID32_SOME; 779 break; 780 } 781 782 memcpy(ptr, &uuid->uuid[12], sizeof(u32)); 783 ptr += sizeof(u32); 784 uuids_start[0] += sizeof(u32); 785 } 786 787 return ptr; 788 } 789 790 static u8 *create_uuid128_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len) 791 { 792 u8 *ptr = data, *uuids_start = NULL; 793 struct bt_uuid *uuid; 794 795 if (len < 18) 796 return ptr; 797 798 list_for_each_entry(uuid, &hdev->uuids, list) { 799 if (uuid->size != 128) 800 continue; 801 802 if (!uuids_start) { 803 uuids_start = ptr; 804 uuids_start[0] = 1; 805 uuids_start[1] = EIR_UUID128_ALL; 806 ptr += 2; 807 } 808 809 /* Stop if not enough space to put next UUID */ 810 if ((ptr - data) + 16 > len) { 811 uuids_start[1] = EIR_UUID128_SOME; 812 break; 813 } 814 815 memcpy(ptr, uuid->uuid, 16); 816 ptr += 16; 817 uuids_start[0] += 16; 818 } 819 820 return ptr; 821 } 822 823 static struct mgmt_pending_cmd *pending_find(u16 opcode, struct hci_dev *hdev) 824 { 825 return mgmt_pending_find(HCI_CHANNEL_CONTROL, opcode, hdev); 826 } 827 828 static struct mgmt_pending_cmd *pending_find_data(u16 opcode, 829 struct hci_dev *hdev, 830 const void *data) 831 { 832 return mgmt_pending_find_data(HCI_CHANNEL_CONTROL, opcode, hdev, data); 833 } 834 835 static u8 get_current_adv_instance(struct hci_dev *hdev) 836 { 837 /* The "Set Advertising" setting supersedes the "Add Advertising" 838 * setting. Here we set the advertising data based on which 839 * setting was set. When neither apply, default to the global settings, 840 * represented by instance "0". 841 */ 842 if (hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) && 843 !hci_dev_test_flag(hdev, HCI_ADVERTISING)) 844 return hdev->cur_adv_instance; 845 846 return 0x00; 847 } 848 849 static u8 create_default_scan_rsp_data(struct hci_dev *hdev, u8 *ptr) 850 { 851 u8 ad_len = 0; 852 size_t name_len; 853 854 name_len = strlen(hdev->dev_name); 855 if (name_len > 0) { 856 size_t max_len = HCI_MAX_AD_LENGTH - ad_len - 2; 857 858 if (name_len > max_len) { 859 name_len = max_len; 860 ptr[1] = EIR_NAME_SHORT; 861 } else 862 ptr[1] = EIR_NAME_COMPLETE; 863 864 ptr[0] = name_len + 1; 865 866 memcpy(ptr + 2, hdev->dev_name, name_len); 867 868 ad_len += (name_len + 2); 869 ptr += (name_len + 2); 870 } 871 872 return ad_len; 873 } 874 875 static u8 create_instance_scan_rsp_data(struct hci_dev *hdev, u8 instance, 876 u8 *ptr) 877 { 878 struct adv_info *adv_instance; 879 880 adv_instance = hci_find_adv_instance(hdev, instance); 881 if (!adv_instance) 882 return 0; 883 884 /* TODO: Set the appropriate entries based on advertising instance flags 885 * here once flags other than 0 are supported. 886 */ 887 memcpy(ptr, adv_instance->scan_rsp_data, 888 adv_instance->scan_rsp_len); 889 890 return adv_instance->scan_rsp_len; 891 } 892 893 static void update_inst_scan_rsp_data(struct hci_request *req, u8 instance) 894 { 895 struct hci_dev *hdev = req->hdev; 896 struct hci_cp_le_set_scan_rsp_data cp; 897 u8 len; 898 899 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED)) 900 return; 901 902 memset(&cp, 0, sizeof(cp)); 903 904 if (instance) 905 len = create_instance_scan_rsp_data(hdev, instance, cp.data); 906 else 907 len = create_default_scan_rsp_data(hdev, cp.data); 908 909 if (hdev->scan_rsp_data_len == len && 910 !memcmp(cp.data, hdev->scan_rsp_data, len)) 911 return; 912 913 memcpy(hdev->scan_rsp_data, cp.data, sizeof(cp.data)); 914 hdev->scan_rsp_data_len = len; 915 916 cp.length = len; 917 918 hci_req_add(req, HCI_OP_LE_SET_SCAN_RSP_DATA, sizeof(cp), &cp); 919 } 920 921 static void update_scan_rsp_data(struct hci_request *req) 922 { 923 update_inst_scan_rsp_data(req, get_current_adv_instance(req->hdev)); 924 } 925 926 static u8 get_adv_discov_flags(struct hci_dev *hdev) 927 { 928 struct mgmt_pending_cmd *cmd; 929 930 /* If there's a pending mgmt command the flags will not yet have 931 * their final values, so check for this first. 932 */ 933 cmd = pending_find(MGMT_OP_SET_DISCOVERABLE, hdev); 934 if (cmd) { 935 struct mgmt_mode *cp = cmd->param; 936 if (cp->val == 0x01) 937 return LE_AD_GENERAL; 938 else if (cp->val == 0x02) 939 return LE_AD_LIMITED; 940 } else { 941 if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) 942 return LE_AD_LIMITED; 943 else if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE)) 944 return LE_AD_GENERAL; 945 } 946 947 return 0; 948 } 949 950 static bool get_connectable(struct hci_dev *hdev) 951 { 952 struct mgmt_pending_cmd *cmd; 953 954 /* If there's a pending mgmt command the flag will not yet have 955 * it's final value, so check for this first. 956 */ 957 cmd = pending_find(MGMT_OP_SET_CONNECTABLE, hdev); 958 if (cmd) { 959 struct mgmt_mode *cp = cmd->param; 960 961 return cp->val; 962 } 963 964 return hci_dev_test_flag(hdev, HCI_CONNECTABLE); 965 } 966 967 static u32 get_adv_instance_flags(struct hci_dev *hdev, u8 instance) 968 { 969 u32 flags; 970 struct adv_info *adv_instance; 971 972 if (instance == 0x00) { 973 /* Instance 0 always manages the "Tx Power" and "Flags" 974 * fields 975 */ 976 flags = MGMT_ADV_FLAG_TX_POWER | MGMT_ADV_FLAG_MANAGED_FLAGS; 977 978 /* For instance 0, the HCI_ADVERTISING_CONNECTABLE setting 979 * corresponds to the "connectable" instance flag. 980 */ 981 if (hci_dev_test_flag(hdev, HCI_ADVERTISING_CONNECTABLE)) 982 flags |= MGMT_ADV_FLAG_CONNECTABLE; 983 984 return flags; 985 } 986 987 adv_instance = hci_find_adv_instance(hdev, instance); 988 989 /* Return 0 when we got an invalid instance identifier. */ 990 if (!adv_instance) 991 return 0; 992 993 return adv_instance->flags; 994 } 995 996 static u8 get_cur_adv_instance_scan_rsp_len(struct hci_dev *hdev) 997 { 998 u8 instance = get_current_adv_instance(hdev); 999 struct adv_info *adv_instance; 1000 1001 /* Ignore instance 0 */ 1002 if (instance == 0x00) 1003 return 0; 1004 1005 adv_instance = hci_find_adv_instance(hdev, instance); 1006 if (!adv_instance) 1007 return 0; 1008 1009 /* TODO: Take into account the "appearance" and "local-name" flags here. 1010 * These are currently being ignored as they are not supported. 1011 */ 1012 return adv_instance->scan_rsp_len; 1013 } 1014 1015 static u8 create_instance_adv_data(struct hci_dev *hdev, u8 instance, u8 *ptr) 1016 { 1017 struct adv_info *adv_instance = NULL; 1018 u8 ad_len = 0, flags = 0; 1019 u32 instance_flags; 1020 1021 /* Return 0 when the current instance identifier is invalid. */ 1022 if (instance) { 1023 adv_instance = hci_find_adv_instance(hdev, instance); 1024 if (!adv_instance) 1025 return 0; 1026 } 1027 1028 instance_flags = get_adv_instance_flags(hdev, instance); 1029 1030 /* The Add Advertising command allows userspace to set both the general 1031 * and limited discoverable flags. 1032 */ 1033 if (instance_flags & MGMT_ADV_FLAG_DISCOV) 1034 flags |= LE_AD_GENERAL; 1035 1036 if (instance_flags & MGMT_ADV_FLAG_LIMITED_DISCOV) 1037 flags |= LE_AD_LIMITED; 1038 1039 if (flags || (instance_flags & MGMT_ADV_FLAG_MANAGED_FLAGS)) { 1040 /* If a discovery flag wasn't provided, simply use the global 1041 * settings. 1042 */ 1043 if (!flags) 1044 flags |= get_adv_discov_flags(hdev); 1045 1046 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) 1047 flags |= LE_AD_NO_BREDR; 1048 1049 /* If flags would still be empty, then there is no need to 1050 * include the "Flags" AD field". 1051 */ 1052 if (flags) { 1053 ptr[0] = 0x02; 1054 ptr[1] = EIR_FLAGS; 1055 ptr[2] = flags; 1056 1057 ad_len += 3; 1058 ptr += 3; 1059 } 1060 } 1061 1062 if (adv_instance) { 1063 memcpy(ptr, adv_instance->adv_data, 1064 adv_instance->adv_data_len); 1065 ad_len += adv_instance->adv_data_len; 1066 ptr += adv_instance->adv_data_len; 1067 } 1068 1069 /* Provide Tx Power only if we can provide a valid value for it */ 1070 if (hdev->adv_tx_power != HCI_TX_POWER_INVALID && 1071 (instance_flags & MGMT_ADV_FLAG_TX_POWER)) { 1072 ptr[0] = 0x02; 1073 ptr[1] = EIR_TX_POWER; 1074 ptr[2] = (u8)hdev->adv_tx_power; 1075 1076 ad_len += 3; 1077 ptr += 3; 1078 } 1079 1080 return ad_len; 1081 } 1082 1083 static void update_inst_adv_data(struct hci_request *req, u8 instance) 1084 { 1085 struct hci_dev *hdev = req->hdev; 1086 struct hci_cp_le_set_adv_data cp; 1087 u8 len; 1088 1089 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED)) 1090 return; 1091 1092 memset(&cp, 0, sizeof(cp)); 1093 1094 len = create_instance_adv_data(hdev, instance, cp.data); 1095 1096 /* There's nothing to do if the data hasn't changed */ 1097 if (hdev->adv_data_len == len && 1098 memcmp(cp.data, hdev->adv_data, len) == 0) 1099 return; 1100 1101 memcpy(hdev->adv_data, cp.data, sizeof(cp.data)); 1102 hdev->adv_data_len = len; 1103 1104 cp.length = len; 1105 1106 hci_req_add(req, HCI_OP_LE_SET_ADV_DATA, sizeof(cp), &cp); 1107 } 1108 1109 static void update_adv_data(struct hci_request *req) 1110 { 1111 update_inst_adv_data(req, get_current_adv_instance(req->hdev)); 1112 } 1113 1114 int mgmt_update_adv_data(struct hci_dev *hdev) 1115 { 1116 struct hci_request req; 1117 1118 hci_req_init(&req, hdev); 1119 update_adv_data(&req); 1120 1121 return hci_req_run(&req, NULL); 1122 } 1123 1124 static void create_eir(struct hci_dev *hdev, u8 *data) 1125 { 1126 u8 *ptr = data; 1127 size_t name_len; 1128 1129 name_len = strlen(hdev->dev_name); 1130 1131 if (name_len > 0) { 1132 /* EIR Data type */ 1133 if (name_len > 48) { 1134 name_len = 48; 1135 ptr[1] = EIR_NAME_SHORT; 1136 } else 1137 ptr[1] = EIR_NAME_COMPLETE; 1138 1139 /* EIR Data length */ 1140 ptr[0] = name_len + 1; 1141 1142 memcpy(ptr + 2, hdev->dev_name, name_len); 1143 1144 ptr += (name_len + 2); 1145 } 1146 1147 if (hdev->inq_tx_power != HCI_TX_POWER_INVALID) { 1148 ptr[0] = 2; 1149 ptr[1] = EIR_TX_POWER; 1150 ptr[2] = (u8) hdev->inq_tx_power; 1151 1152 ptr += 3; 1153 } 1154 1155 if (hdev->devid_source > 0) { 1156 ptr[0] = 9; 1157 ptr[1] = EIR_DEVICE_ID; 1158 1159 put_unaligned_le16(hdev->devid_source, ptr + 2); 1160 put_unaligned_le16(hdev->devid_vendor, ptr + 4); 1161 put_unaligned_le16(hdev->devid_product, ptr + 6); 1162 put_unaligned_le16(hdev->devid_version, ptr + 8); 1163 1164 ptr += 10; 1165 } 1166 1167 ptr = create_uuid16_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data)); 1168 ptr = create_uuid32_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data)); 1169 ptr = create_uuid128_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data)); 1170 } 1171 1172 static void update_eir(struct hci_request *req) 1173 { 1174 struct hci_dev *hdev = req->hdev; 1175 struct hci_cp_write_eir cp; 1176 1177 if (!hdev_is_powered(hdev)) 1178 return; 1179 1180 if (!lmp_ext_inq_capable(hdev)) 1181 return; 1182 1183 if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) 1184 return; 1185 1186 if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE)) 1187 return; 1188 1189 memset(&cp, 0, sizeof(cp)); 1190 1191 create_eir(hdev, cp.data); 1192 1193 if (memcmp(cp.data, hdev->eir, sizeof(cp.data)) == 0) 1194 return; 1195 1196 memcpy(hdev->eir, cp.data, sizeof(cp.data)); 1197 1198 hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); 1199 } 1200 1201 static u8 get_service_classes(struct hci_dev *hdev) 1202 { 1203 struct bt_uuid *uuid; 1204 u8 val = 0; 1205 1206 list_for_each_entry(uuid, &hdev->uuids, list) 1207 val |= uuid->svc_hint; 1208 1209 return val; 1210 } 1211 1212 static void update_class(struct hci_request *req) 1213 { 1214 struct hci_dev *hdev = req->hdev; 1215 u8 cod[3]; 1216 1217 BT_DBG("%s", hdev->name); 1218 1219 if (!hdev_is_powered(hdev)) 1220 return; 1221 1222 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) 1223 return; 1224 1225 if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE)) 1226 return; 1227 1228 cod[0] = hdev->minor_class; 1229 cod[1] = hdev->major_class; 1230 cod[2] = get_service_classes(hdev); 1231 1232 if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) 1233 cod[1] |= 0x20; 1234 1235 if (memcmp(cod, hdev->dev_class, 3) == 0) 1236 return; 1237 1238 hci_req_add(req, HCI_OP_WRITE_CLASS_OF_DEV, sizeof(cod), cod); 1239 } 1240 1241 static void disable_advertising(struct hci_request *req) 1242 { 1243 u8 enable = 0x00; 1244 1245 hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable); 1246 } 1247 1248 static void enable_advertising(struct hci_request *req) 1249 { 1250 struct hci_dev *hdev = req->hdev; 1251 struct hci_cp_le_set_adv_param cp; 1252 u8 own_addr_type, enable = 0x01; 1253 bool connectable; 1254 u8 instance; 1255 u32 flags; 1256 1257 if (hci_conn_num(hdev, LE_LINK) > 0) 1258 return; 1259 1260 if (hci_dev_test_flag(hdev, HCI_LE_ADV)) 1261 disable_advertising(req); 1262 1263 /* Clear the HCI_LE_ADV bit temporarily so that the 1264 * hci_update_random_address knows that it's safe to go ahead 1265 * and write a new random address. The flag will be set back on 1266 * as soon as the SET_ADV_ENABLE HCI command completes. 1267 */ 1268 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1269 1270 instance = get_current_adv_instance(hdev); 1271 flags = get_adv_instance_flags(hdev, instance); 1272 1273 /* If the "connectable" instance flag was not set, then choose between 1274 * ADV_IND and ADV_NONCONN_IND based on the global connectable setting. 1275 */ 1276 connectable = (flags & MGMT_ADV_FLAG_CONNECTABLE) || 1277 get_connectable(hdev); 1278 1279 /* Set require_privacy to true only when non-connectable 1280 * advertising is used. In that case it is fine to use a 1281 * non-resolvable private address. 1282 */ 1283 if (hci_update_random_address(req, !connectable, &own_addr_type) < 0) 1284 return; 1285 1286 memset(&cp, 0, sizeof(cp)); 1287 cp.min_interval = cpu_to_le16(hdev->le_adv_min_interval); 1288 cp.max_interval = cpu_to_le16(hdev->le_adv_max_interval); 1289 1290 if (connectable) 1291 cp.type = LE_ADV_IND; 1292 else if (get_cur_adv_instance_scan_rsp_len(hdev)) 1293 cp.type = LE_ADV_SCAN_IND; 1294 else 1295 cp.type = LE_ADV_NONCONN_IND; 1296 1297 cp.own_address_type = own_addr_type; 1298 cp.channel_map = hdev->le_adv_channel_map; 1299 1300 hci_req_add(req, HCI_OP_LE_SET_ADV_PARAM, sizeof(cp), &cp); 1301 1302 hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable); 1303 } 1304 1305 static void service_cache_off(struct work_struct *work) 1306 { 1307 struct hci_dev *hdev = container_of(work, struct hci_dev, 1308 service_cache.work); 1309 struct hci_request req; 1310 1311 if (!hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE)) 1312 return; 1313 1314 hci_req_init(&req, hdev); 1315 1316 hci_dev_lock(hdev); 1317 1318 update_eir(&req); 1319 update_class(&req); 1320 1321 hci_dev_unlock(hdev); 1322 1323 hci_req_run(&req, NULL); 1324 } 1325 1326 static void rpa_expired(struct work_struct *work) 1327 { 1328 struct hci_dev *hdev = container_of(work, struct hci_dev, 1329 rpa_expired.work); 1330 struct hci_request req; 1331 1332 BT_DBG(""); 1333 1334 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); 1335 1336 if (!hci_dev_test_flag(hdev, HCI_ADVERTISING)) 1337 return; 1338 1339 /* The generation of a new RPA and programming it into the 1340 * controller happens in the enable_advertising() function. 1341 */ 1342 hci_req_init(&req, hdev); 1343 enable_advertising(&req); 1344 hci_req_run(&req, NULL); 1345 } 1346 1347 static void mgmt_init_hdev(struct sock *sk, struct hci_dev *hdev) 1348 { 1349 if (hci_dev_test_and_set_flag(hdev, HCI_MGMT)) 1350 return; 1351 1352 INIT_DELAYED_WORK(&hdev->service_cache, service_cache_off); 1353 INIT_DELAYED_WORK(&hdev->rpa_expired, rpa_expired); 1354 1355 /* Non-mgmt controlled devices get this bit set 1356 * implicitly so that pairing works for them, however 1357 * for mgmt we require user-space to explicitly enable 1358 * it 1359 */ 1360 hci_dev_clear_flag(hdev, HCI_BONDABLE); 1361 } 1362 1363 static int read_controller_info(struct sock *sk, struct hci_dev *hdev, 1364 void *data, u16 data_len) 1365 { 1366 struct mgmt_rp_read_info rp; 1367 1368 BT_DBG("sock %p %s", sk, hdev->name); 1369 1370 hci_dev_lock(hdev); 1371 1372 memset(&rp, 0, sizeof(rp)); 1373 1374 bacpy(&rp.bdaddr, &hdev->bdaddr); 1375 1376 rp.version = hdev->hci_ver; 1377 rp.manufacturer = cpu_to_le16(hdev->manufacturer); 1378 1379 rp.supported_settings = cpu_to_le32(get_supported_settings(hdev)); 1380 rp.current_settings = cpu_to_le32(get_current_settings(hdev)); 1381 1382 memcpy(rp.dev_class, hdev->dev_class, 3); 1383 1384 memcpy(rp.name, hdev->dev_name, sizeof(hdev->dev_name)); 1385 memcpy(rp.short_name, hdev->short_name, sizeof(hdev->short_name)); 1386 1387 hci_dev_unlock(hdev); 1388 1389 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_INFO, 0, &rp, 1390 sizeof(rp)); 1391 } 1392 1393 static int send_settings_rsp(struct sock *sk, u16 opcode, struct hci_dev *hdev) 1394 { 1395 __le32 settings = cpu_to_le32(get_current_settings(hdev)); 1396 1397 return mgmt_cmd_complete(sk, hdev->id, opcode, 0, &settings, 1398 sizeof(settings)); 1399 } 1400 1401 static void clean_up_hci_complete(struct hci_dev *hdev, u8 status, u16 opcode) 1402 { 1403 BT_DBG("%s status 0x%02x", hdev->name, status); 1404 1405 if (hci_conn_count(hdev) == 0) { 1406 cancel_delayed_work(&hdev->power_off); 1407 queue_work(hdev->req_workqueue, &hdev->power_off.work); 1408 } 1409 } 1410 1411 static bool hci_stop_discovery(struct hci_request *req) 1412 { 1413 struct hci_dev *hdev = req->hdev; 1414 struct hci_cp_remote_name_req_cancel cp; 1415 struct inquiry_entry *e; 1416 1417 switch (hdev->discovery.state) { 1418 case DISCOVERY_FINDING: 1419 if (test_bit(HCI_INQUIRY, &hdev->flags)) 1420 hci_req_add(req, HCI_OP_INQUIRY_CANCEL, 0, NULL); 1421 1422 if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) { 1423 cancel_delayed_work(&hdev->le_scan_disable); 1424 hci_req_add_le_scan_disable(req); 1425 } 1426 1427 return true; 1428 1429 case DISCOVERY_RESOLVING: 1430 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, 1431 NAME_PENDING); 1432 if (!e) 1433 break; 1434 1435 bacpy(&cp.bdaddr, &e->data.bdaddr); 1436 hci_req_add(req, HCI_OP_REMOTE_NAME_REQ_CANCEL, sizeof(cp), 1437 &cp); 1438 1439 return true; 1440 1441 default: 1442 /* Passive scanning */ 1443 if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) { 1444 hci_req_add_le_scan_disable(req); 1445 return true; 1446 } 1447 1448 break; 1449 } 1450 1451 return false; 1452 } 1453 1454 static void advertising_added(struct sock *sk, struct hci_dev *hdev, 1455 u8 instance) 1456 { 1457 struct mgmt_ev_advertising_added ev; 1458 1459 ev.instance = instance; 1460 1461 mgmt_event(MGMT_EV_ADVERTISING_ADDED, hdev, &ev, sizeof(ev), sk); 1462 } 1463 1464 static void advertising_removed(struct sock *sk, struct hci_dev *hdev, 1465 u8 instance) 1466 { 1467 struct mgmt_ev_advertising_removed ev; 1468 1469 ev.instance = instance; 1470 1471 mgmt_event(MGMT_EV_ADVERTISING_REMOVED, hdev, &ev, sizeof(ev), sk); 1472 } 1473 1474 static int schedule_adv_instance(struct hci_request *req, u8 instance, 1475 bool force) { 1476 struct hci_dev *hdev = req->hdev; 1477 struct adv_info *adv_instance = NULL; 1478 u16 timeout; 1479 1480 if (hci_dev_test_flag(hdev, HCI_ADVERTISING) || 1481 !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE)) 1482 return -EPERM; 1483 1484 if (hdev->adv_instance_timeout) 1485 return -EBUSY; 1486 1487 adv_instance = hci_find_adv_instance(hdev, instance); 1488 if (!adv_instance) 1489 return -ENOENT; 1490 1491 /* A zero timeout means unlimited advertising. As long as there is 1492 * only one instance, duration should be ignored. We still set a timeout 1493 * in case further instances are being added later on. 1494 * 1495 * If the remaining lifetime of the instance is more than the duration 1496 * then the timeout corresponds to the duration, otherwise it will be 1497 * reduced to the remaining instance lifetime. 1498 */ 1499 if (adv_instance->timeout == 0 || 1500 adv_instance->duration <= adv_instance->remaining_time) 1501 timeout = adv_instance->duration; 1502 else 1503 timeout = adv_instance->remaining_time; 1504 1505 /* The remaining time is being reduced unless the instance is being 1506 * advertised without time limit. 1507 */ 1508 if (adv_instance->timeout) 1509 adv_instance->remaining_time = 1510 adv_instance->remaining_time - timeout; 1511 1512 hdev->adv_instance_timeout = timeout; 1513 queue_delayed_work(hdev->workqueue, 1514 &hdev->adv_instance_expire, 1515 msecs_to_jiffies(timeout * 1000)); 1516 1517 /* If we're just re-scheduling the same instance again then do not 1518 * execute any HCI commands. This happens when a single instance is 1519 * being advertised. 1520 */ 1521 if (!force && hdev->cur_adv_instance == instance && 1522 hci_dev_test_flag(hdev, HCI_LE_ADV)) 1523 return 0; 1524 1525 hdev->cur_adv_instance = instance; 1526 update_adv_data(req); 1527 update_scan_rsp_data(req); 1528 enable_advertising(req); 1529 1530 return 0; 1531 } 1532 1533 static void cancel_adv_timeout(struct hci_dev *hdev) 1534 { 1535 if (hdev->adv_instance_timeout) { 1536 hdev->adv_instance_timeout = 0; 1537 cancel_delayed_work(&hdev->adv_instance_expire); 1538 } 1539 } 1540 1541 /* For a single instance: 1542 * - force == true: The instance will be removed even when its remaining 1543 * lifetime is not zero. 1544 * - force == false: the instance will be deactivated but kept stored unless 1545 * the remaining lifetime is zero. 1546 * 1547 * For instance == 0x00: 1548 * - force == true: All instances will be removed regardless of their timeout 1549 * setting. 1550 * - force == false: Only instances that have a timeout will be removed. 1551 */ 1552 static void clear_adv_instance(struct hci_dev *hdev, struct hci_request *req, 1553 u8 instance, bool force) 1554 { 1555 struct adv_info *adv_instance, *n, *next_instance = NULL; 1556 int err; 1557 u8 rem_inst; 1558 1559 /* Cancel any timeout concerning the removed instance(s). */ 1560 if (!instance || hdev->cur_adv_instance == instance) 1561 cancel_adv_timeout(hdev); 1562 1563 /* Get the next instance to advertise BEFORE we remove 1564 * the current one. This can be the same instance again 1565 * if there is only one instance. 1566 */ 1567 if (instance && hdev->cur_adv_instance == instance) 1568 next_instance = hci_get_next_instance(hdev, instance); 1569 1570 if (instance == 0x00) { 1571 list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, 1572 list) { 1573 if (!(force || adv_instance->timeout)) 1574 continue; 1575 1576 rem_inst = adv_instance->instance; 1577 err = hci_remove_adv_instance(hdev, rem_inst); 1578 if (!err) 1579 advertising_removed(NULL, hdev, rem_inst); 1580 } 1581 hdev->cur_adv_instance = 0x00; 1582 } else { 1583 adv_instance = hci_find_adv_instance(hdev, instance); 1584 1585 if (force || (adv_instance && adv_instance->timeout && 1586 !adv_instance->remaining_time)) { 1587 /* Don't advertise a removed instance. */ 1588 if (next_instance && 1589 next_instance->instance == instance) 1590 next_instance = NULL; 1591 1592 err = hci_remove_adv_instance(hdev, instance); 1593 if (!err) 1594 advertising_removed(NULL, hdev, instance); 1595 } 1596 } 1597 1598 if (list_empty(&hdev->adv_instances)) { 1599 hdev->cur_adv_instance = 0x00; 1600 hci_dev_clear_flag(hdev, HCI_ADVERTISING_INSTANCE); 1601 } 1602 1603 if (!req || !hdev_is_powered(hdev) || 1604 hci_dev_test_flag(hdev, HCI_ADVERTISING)) 1605 return; 1606 1607 if (next_instance) 1608 schedule_adv_instance(req, next_instance->instance, false); 1609 } 1610 1611 static int clean_up_hci_state(struct hci_dev *hdev) 1612 { 1613 struct hci_request req; 1614 struct hci_conn *conn; 1615 bool discov_stopped; 1616 int err; 1617 1618 hci_req_init(&req, hdev); 1619 1620 if (test_bit(HCI_ISCAN, &hdev->flags) || 1621 test_bit(HCI_PSCAN, &hdev->flags)) { 1622 u8 scan = 0x00; 1623 hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); 1624 } 1625 1626 clear_adv_instance(hdev, NULL, 0x00, false); 1627 1628 if (hci_dev_test_flag(hdev, HCI_LE_ADV)) 1629 disable_advertising(&req); 1630 1631 discov_stopped = hci_stop_discovery(&req); 1632 1633 list_for_each_entry(conn, &hdev->conn_hash.list, list) { 1634 struct hci_cp_disconnect dc; 1635 struct hci_cp_reject_conn_req rej; 1636 1637 switch (conn->state) { 1638 case BT_CONNECTED: 1639 case BT_CONFIG: 1640 dc.handle = cpu_to_le16(conn->handle); 1641 dc.reason = 0x15; /* Terminated due to Power Off */ 1642 hci_req_add(&req, HCI_OP_DISCONNECT, sizeof(dc), &dc); 1643 break; 1644 case BT_CONNECT: 1645 if (conn->type == LE_LINK) 1646 hci_req_add(&req, HCI_OP_LE_CREATE_CONN_CANCEL, 1647 0, NULL); 1648 else if (conn->type == ACL_LINK) 1649 hci_req_add(&req, HCI_OP_CREATE_CONN_CANCEL, 1650 6, &conn->dst); 1651 break; 1652 case BT_CONNECT2: 1653 bacpy(&rej.bdaddr, &conn->dst); 1654 rej.reason = 0x15; /* Terminated due to Power Off */ 1655 if (conn->type == ACL_LINK) 1656 hci_req_add(&req, HCI_OP_REJECT_CONN_REQ, 1657 sizeof(rej), &rej); 1658 else if (conn->type == SCO_LINK) 1659 hci_req_add(&req, HCI_OP_REJECT_SYNC_CONN_REQ, 1660 sizeof(rej), &rej); 1661 break; 1662 } 1663 } 1664 1665 err = hci_req_run(&req, clean_up_hci_complete); 1666 if (!err && discov_stopped) 1667 hci_discovery_set_state(hdev, DISCOVERY_STOPPING); 1668 1669 return err; 1670 } 1671 1672 static int set_powered(struct sock *sk, struct hci_dev *hdev, void *data, 1673 u16 len) 1674 { 1675 struct mgmt_mode *cp = data; 1676 struct mgmt_pending_cmd *cmd; 1677 int err; 1678 1679 BT_DBG("request for %s", hdev->name); 1680 1681 if (cp->val != 0x00 && cp->val != 0x01) 1682 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_POWERED, 1683 MGMT_STATUS_INVALID_PARAMS); 1684 1685 hci_dev_lock(hdev); 1686 1687 if (pending_find(MGMT_OP_SET_POWERED, hdev)) { 1688 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_POWERED, 1689 MGMT_STATUS_BUSY); 1690 goto failed; 1691 } 1692 1693 if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) { 1694 cancel_delayed_work(&hdev->power_off); 1695 1696 if (cp->val) { 1697 mgmt_pending_add(sk, MGMT_OP_SET_POWERED, hdev, 1698 data, len); 1699 err = mgmt_powered(hdev, 1); 1700 goto failed; 1701 } 1702 } 1703 1704 if (!!cp->val == hdev_is_powered(hdev)) { 1705 err = send_settings_rsp(sk, MGMT_OP_SET_POWERED, hdev); 1706 goto failed; 1707 } 1708 1709 cmd = mgmt_pending_add(sk, MGMT_OP_SET_POWERED, hdev, data, len); 1710 if (!cmd) { 1711 err = -ENOMEM; 1712 goto failed; 1713 } 1714 1715 if (cp->val) { 1716 queue_work(hdev->req_workqueue, &hdev->power_on); 1717 err = 0; 1718 } else { 1719 /* Disconnect connections, stop scans, etc */ 1720 err = clean_up_hci_state(hdev); 1721 if (!err) 1722 queue_delayed_work(hdev->req_workqueue, &hdev->power_off, 1723 HCI_POWER_OFF_TIMEOUT); 1724 1725 /* ENODATA means there were no HCI commands queued */ 1726 if (err == -ENODATA) { 1727 cancel_delayed_work(&hdev->power_off); 1728 queue_work(hdev->req_workqueue, &hdev->power_off.work); 1729 err = 0; 1730 } 1731 } 1732 1733 failed: 1734 hci_dev_unlock(hdev); 1735 return err; 1736 } 1737 1738 static int new_settings(struct hci_dev *hdev, struct sock *skip) 1739 { 1740 __le32 ev = cpu_to_le32(get_current_settings(hdev)); 1741 1742 return mgmt_generic_event(MGMT_EV_NEW_SETTINGS, hdev, &ev, 1743 sizeof(ev), skip); 1744 } 1745 1746 int mgmt_new_settings(struct hci_dev *hdev) 1747 { 1748 return new_settings(hdev, NULL); 1749 } 1750 1751 struct cmd_lookup { 1752 struct sock *sk; 1753 struct hci_dev *hdev; 1754 u8 mgmt_status; 1755 }; 1756 1757 static void settings_rsp(struct mgmt_pending_cmd *cmd, void *data) 1758 { 1759 struct cmd_lookup *match = data; 1760 1761 send_settings_rsp(cmd->sk, cmd->opcode, match->hdev); 1762 1763 list_del(&cmd->list); 1764 1765 if (match->sk == NULL) { 1766 match->sk = cmd->sk; 1767 sock_hold(match->sk); 1768 } 1769 1770 mgmt_pending_free(cmd); 1771 } 1772 1773 static void cmd_status_rsp(struct mgmt_pending_cmd *cmd, void *data) 1774 { 1775 u8 *status = data; 1776 1777 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, *status); 1778 mgmt_pending_remove(cmd); 1779 } 1780 1781 static void cmd_complete_rsp(struct mgmt_pending_cmd *cmd, void *data) 1782 { 1783 if (cmd->cmd_complete) { 1784 u8 *status = data; 1785 1786 cmd->cmd_complete(cmd, *status); 1787 mgmt_pending_remove(cmd); 1788 1789 return; 1790 } 1791 1792 cmd_status_rsp(cmd, data); 1793 } 1794 1795 static int generic_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status) 1796 { 1797 return mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status, 1798 cmd->param, cmd->param_len); 1799 } 1800 1801 static int addr_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status) 1802 { 1803 return mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status, 1804 cmd->param, sizeof(struct mgmt_addr_info)); 1805 } 1806 1807 static u8 mgmt_bredr_support(struct hci_dev *hdev) 1808 { 1809 if (!lmp_bredr_capable(hdev)) 1810 return MGMT_STATUS_NOT_SUPPORTED; 1811 else if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) 1812 return MGMT_STATUS_REJECTED; 1813 else 1814 return MGMT_STATUS_SUCCESS; 1815 } 1816 1817 static u8 mgmt_le_support(struct hci_dev *hdev) 1818 { 1819 if (!lmp_le_capable(hdev)) 1820 return MGMT_STATUS_NOT_SUPPORTED; 1821 else if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED)) 1822 return MGMT_STATUS_REJECTED; 1823 else 1824 return MGMT_STATUS_SUCCESS; 1825 } 1826 1827 static void set_discoverable_complete(struct hci_dev *hdev, u8 status, 1828 u16 opcode) 1829 { 1830 struct mgmt_pending_cmd *cmd; 1831 struct mgmt_mode *cp; 1832 struct hci_request req; 1833 bool changed; 1834 1835 BT_DBG("status 0x%02x", status); 1836 1837 hci_dev_lock(hdev); 1838 1839 cmd = pending_find(MGMT_OP_SET_DISCOVERABLE, hdev); 1840 if (!cmd) 1841 goto unlock; 1842 1843 if (status) { 1844 u8 mgmt_err = mgmt_status(status); 1845 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, mgmt_err); 1846 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); 1847 goto remove_cmd; 1848 } 1849 1850 cp = cmd->param; 1851 if (cp->val) { 1852 changed = !hci_dev_test_and_set_flag(hdev, HCI_DISCOVERABLE); 1853 1854 if (hdev->discov_timeout > 0) { 1855 int to = msecs_to_jiffies(hdev->discov_timeout * 1000); 1856 queue_delayed_work(hdev->workqueue, &hdev->discov_off, 1857 to); 1858 } 1859 } else { 1860 changed = hci_dev_test_and_clear_flag(hdev, HCI_DISCOVERABLE); 1861 } 1862 1863 send_settings_rsp(cmd->sk, MGMT_OP_SET_DISCOVERABLE, hdev); 1864 1865 if (changed) 1866 new_settings(hdev, cmd->sk); 1867 1868 /* When the discoverable mode gets changed, make sure 1869 * that class of device has the limited discoverable 1870 * bit correctly set. Also update page scan based on whitelist 1871 * entries. 1872 */ 1873 hci_req_init(&req, hdev); 1874 __hci_update_page_scan(&req); 1875 update_class(&req); 1876 hci_req_run(&req, NULL); 1877 1878 remove_cmd: 1879 mgmt_pending_remove(cmd); 1880 1881 unlock: 1882 hci_dev_unlock(hdev); 1883 } 1884 1885 static int set_discoverable(struct sock *sk, struct hci_dev *hdev, void *data, 1886 u16 len) 1887 { 1888 struct mgmt_cp_set_discoverable *cp = data; 1889 struct mgmt_pending_cmd *cmd; 1890 struct hci_request req; 1891 u16 timeout; 1892 u8 scan; 1893 int err; 1894 1895 BT_DBG("request for %s", hdev->name); 1896 1897 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED) && 1898 !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) 1899 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE, 1900 MGMT_STATUS_REJECTED); 1901 1902 if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02) 1903 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE, 1904 MGMT_STATUS_INVALID_PARAMS); 1905 1906 timeout = __le16_to_cpu(cp->timeout); 1907 1908 /* Disabling discoverable requires that no timeout is set, 1909 * and enabling limited discoverable requires a timeout. 1910 */ 1911 if ((cp->val == 0x00 && timeout > 0) || 1912 (cp->val == 0x02 && timeout == 0)) 1913 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE, 1914 MGMT_STATUS_INVALID_PARAMS); 1915 1916 hci_dev_lock(hdev); 1917 1918 if (!hdev_is_powered(hdev) && timeout > 0) { 1919 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE, 1920 MGMT_STATUS_NOT_POWERED); 1921 goto failed; 1922 } 1923 1924 if (pending_find(MGMT_OP_SET_DISCOVERABLE, hdev) || 1925 pending_find(MGMT_OP_SET_CONNECTABLE, hdev)) { 1926 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE, 1927 MGMT_STATUS_BUSY); 1928 goto failed; 1929 } 1930 1931 if (!hci_dev_test_flag(hdev, HCI_CONNECTABLE)) { 1932 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE, 1933 MGMT_STATUS_REJECTED); 1934 goto failed; 1935 } 1936 1937 if (!hdev_is_powered(hdev)) { 1938 bool changed = false; 1939 1940 /* Setting limited discoverable when powered off is 1941 * not a valid operation since it requires a timeout 1942 * and so no need to check HCI_LIMITED_DISCOVERABLE. 1943 */ 1944 if (!!cp->val != hci_dev_test_flag(hdev, HCI_DISCOVERABLE)) { 1945 hci_dev_change_flag(hdev, HCI_DISCOVERABLE); 1946 changed = true; 1947 } 1948 1949 err = send_settings_rsp(sk, MGMT_OP_SET_DISCOVERABLE, hdev); 1950 if (err < 0) 1951 goto failed; 1952 1953 if (changed) 1954 err = new_settings(hdev, sk); 1955 1956 goto failed; 1957 } 1958 1959 /* If the current mode is the same, then just update the timeout 1960 * value with the new value. And if only the timeout gets updated, 1961 * then no need for any HCI transactions. 1962 */ 1963 if (!!cp->val == hci_dev_test_flag(hdev, HCI_DISCOVERABLE) && 1964 (cp->val == 0x02) == hci_dev_test_flag(hdev, 1965 HCI_LIMITED_DISCOVERABLE)) { 1966 cancel_delayed_work(&hdev->discov_off); 1967 hdev->discov_timeout = timeout; 1968 1969 if (cp->val && hdev->discov_timeout > 0) { 1970 int to = msecs_to_jiffies(hdev->discov_timeout * 1000); 1971 queue_delayed_work(hdev->workqueue, &hdev->discov_off, 1972 to); 1973 } 1974 1975 err = send_settings_rsp(sk, MGMT_OP_SET_DISCOVERABLE, hdev); 1976 goto failed; 1977 } 1978 1979 cmd = mgmt_pending_add(sk, MGMT_OP_SET_DISCOVERABLE, hdev, data, len); 1980 if (!cmd) { 1981 err = -ENOMEM; 1982 goto failed; 1983 } 1984 1985 /* Cancel any potential discoverable timeout that might be 1986 * still active and store new timeout value. The arming of 1987 * the timeout happens in the complete handler. 1988 */ 1989 cancel_delayed_work(&hdev->discov_off); 1990 hdev->discov_timeout = timeout; 1991 1992 /* Limited discoverable mode */ 1993 if (cp->val == 0x02) 1994 hci_dev_set_flag(hdev, HCI_LIMITED_DISCOVERABLE); 1995 else 1996 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); 1997 1998 hci_req_init(&req, hdev); 1999 2000 /* The procedure for LE-only controllers is much simpler - just 2001 * update the advertising data. 2002 */ 2003 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) 2004 goto update_ad; 2005 2006 scan = SCAN_PAGE; 2007 2008 if (cp->val) { 2009 struct hci_cp_write_current_iac_lap hci_cp; 2010 2011 if (cp->val == 0x02) { 2012 /* Limited discoverable mode */ 2013 hci_cp.num_iac = min_t(u8, hdev->num_iac, 2); 2014 hci_cp.iac_lap[0] = 0x00; /* LIAC */ 2015 hci_cp.iac_lap[1] = 0x8b; 2016 hci_cp.iac_lap[2] = 0x9e; 2017 hci_cp.iac_lap[3] = 0x33; /* GIAC */ 2018 hci_cp.iac_lap[4] = 0x8b; 2019 hci_cp.iac_lap[5] = 0x9e; 2020 } else { 2021 /* General discoverable mode */ 2022 hci_cp.num_iac = 1; 2023 hci_cp.iac_lap[0] = 0x33; /* GIAC */ 2024 hci_cp.iac_lap[1] = 0x8b; 2025 hci_cp.iac_lap[2] = 0x9e; 2026 } 2027 2028 hci_req_add(&req, HCI_OP_WRITE_CURRENT_IAC_LAP, 2029 (hci_cp.num_iac * 3) + 1, &hci_cp); 2030 2031 scan |= SCAN_INQUIRY; 2032 } else { 2033 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); 2034 } 2035 2036 hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan); 2037 2038 update_ad: 2039 update_adv_data(&req); 2040 2041 err = hci_req_run(&req, set_discoverable_complete); 2042 if (err < 0) 2043 mgmt_pending_remove(cmd); 2044 2045 failed: 2046 hci_dev_unlock(hdev); 2047 return err; 2048 } 2049 2050 static void write_fast_connectable(struct hci_request *req, bool enable) 2051 { 2052 struct hci_dev *hdev = req->hdev; 2053 struct hci_cp_write_page_scan_activity acp; 2054 u8 type; 2055 2056 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) 2057 return; 2058 2059 if (hdev->hci_ver < BLUETOOTH_VER_1_2) 2060 return; 2061 2062 if (enable) { 2063 type = PAGE_SCAN_TYPE_INTERLACED; 2064 2065 /* 160 msec page scan interval */ 2066 acp.interval = cpu_to_le16(0x0100); 2067 } else { 2068 type = PAGE_SCAN_TYPE_STANDARD; /* default */ 2069 2070 /* default 1.28 sec page scan */ 2071 acp.interval = cpu_to_le16(0x0800); 2072 } 2073 2074 acp.window = cpu_to_le16(0x0012); 2075 2076 if (__cpu_to_le16(hdev->page_scan_interval) != acp.interval || 2077 __cpu_to_le16(hdev->page_scan_window) != acp.window) 2078 hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, 2079 sizeof(acp), &acp); 2080 2081 if (hdev->page_scan_type != type) 2082 hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_TYPE, 1, &type); 2083 } 2084 2085 static void set_connectable_complete(struct hci_dev *hdev, u8 status, 2086 u16 opcode) 2087 { 2088 struct mgmt_pending_cmd *cmd; 2089 struct mgmt_mode *cp; 2090 bool conn_changed, discov_changed; 2091 2092 BT_DBG("status 0x%02x", status); 2093 2094 hci_dev_lock(hdev); 2095 2096 cmd = pending_find(MGMT_OP_SET_CONNECTABLE, hdev); 2097 if (!cmd) 2098 goto unlock; 2099 2100 if (status) { 2101 u8 mgmt_err = mgmt_status(status); 2102 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, mgmt_err); 2103 goto remove_cmd; 2104 } 2105 2106 cp = cmd->param; 2107 if (cp->val) { 2108 conn_changed = !hci_dev_test_and_set_flag(hdev, 2109 HCI_CONNECTABLE); 2110 discov_changed = false; 2111 } else { 2112 conn_changed = hci_dev_test_and_clear_flag(hdev, 2113 HCI_CONNECTABLE); 2114 discov_changed = hci_dev_test_and_clear_flag(hdev, 2115 HCI_DISCOVERABLE); 2116 } 2117 2118 send_settings_rsp(cmd->sk, MGMT_OP_SET_CONNECTABLE, hdev); 2119 2120 if (conn_changed || discov_changed) { 2121 new_settings(hdev, cmd->sk); 2122 hci_update_page_scan(hdev); 2123 if (discov_changed) 2124 mgmt_update_adv_data(hdev); 2125 hci_update_background_scan(hdev); 2126 } 2127 2128 remove_cmd: 2129 mgmt_pending_remove(cmd); 2130 2131 unlock: 2132 hci_dev_unlock(hdev); 2133 } 2134 2135 static int set_connectable_update_settings(struct hci_dev *hdev, 2136 struct sock *sk, u8 val) 2137 { 2138 bool changed = false; 2139 int err; 2140 2141 if (!!val != hci_dev_test_flag(hdev, HCI_CONNECTABLE)) 2142 changed = true; 2143 2144 if (val) { 2145 hci_dev_set_flag(hdev, HCI_CONNECTABLE); 2146 } else { 2147 hci_dev_clear_flag(hdev, HCI_CONNECTABLE); 2148 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); 2149 } 2150 2151 err = send_settings_rsp(sk, MGMT_OP_SET_CONNECTABLE, hdev); 2152 if (err < 0) 2153 return err; 2154 2155 if (changed) { 2156 hci_update_page_scan(hdev); 2157 hci_update_background_scan(hdev); 2158 return new_settings(hdev, sk); 2159 } 2160 2161 return 0; 2162 } 2163 2164 static int set_connectable(struct sock *sk, struct hci_dev *hdev, void *data, 2165 u16 len) 2166 { 2167 struct mgmt_mode *cp = data; 2168 struct mgmt_pending_cmd *cmd; 2169 struct hci_request req; 2170 u8 scan; 2171 int err; 2172 2173 BT_DBG("request for %s", hdev->name); 2174 2175 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED) && 2176 !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) 2177 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_CONNECTABLE, 2178 MGMT_STATUS_REJECTED); 2179 2180 if (cp->val != 0x00 && cp->val != 0x01) 2181 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_CONNECTABLE, 2182 MGMT_STATUS_INVALID_PARAMS); 2183 2184 hci_dev_lock(hdev); 2185 2186 if (!hdev_is_powered(hdev)) { 2187 err = set_connectable_update_settings(hdev, sk, cp->val); 2188 goto failed; 2189 } 2190 2191 if (pending_find(MGMT_OP_SET_DISCOVERABLE, hdev) || 2192 pending_find(MGMT_OP_SET_CONNECTABLE, hdev)) { 2193 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_CONNECTABLE, 2194 MGMT_STATUS_BUSY); 2195 goto failed; 2196 } 2197 2198 cmd = mgmt_pending_add(sk, MGMT_OP_SET_CONNECTABLE, hdev, data, len); 2199 if (!cmd) { 2200 err = -ENOMEM; 2201 goto failed; 2202 } 2203 2204 hci_req_init(&req, hdev); 2205 2206 /* If BR/EDR is not enabled and we disable advertising as a 2207 * by-product of disabling connectable, we need to update the 2208 * advertising flags. 2209 */ 2210 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { 2211 if (!cp->val) { 2212 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); 2213 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); 2214 } 2215 update_adv_data(&req); 2216 } else if (cp->val != test_bit(HCI_PSCAN, &hdev->flags)) { 2217 if (cp->val) { 2218 scan = SCAN_PAGE; 2219 } else { 2220 /* If we don't have any whitelist entries just 2221 * disable all scanning. If there are entries 2222 * and we had both page and inquiry scanning 2223 * enabled then fall back to only page scanning. 2224 * Otherwise no changes are needed. 2225 */ 2226 if (list_empty(&hdev->whitelist)) 2227 scan = SCAN_DISABLED; 2228 else if (test_bit(HCI_ISCAN, &hdev->flags)) 2229 scan = SCAN_PAGE; 2230 else 2231 goto no_scan_update; 2232 2233 if (test_bit(HCI_ISCAN, &hdev->flags) && 2234 hdev->discov_timeout > 0) 2235 cancel_delayed_work(&hdev->discov_off); 2236 } 2237 2238 hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); 2239 } 2240 2241 no_scan_update: 2242 /* Update the advertising parameters if necessary */ 2243 if (hci_dev_test_flag(hdev, HCI_ADVERTISING) || 2244 hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE)) 2245 enable_advertising(&req); 2246 2247 err = hci_req_run(&req, set_connectable_complete); 2248 if (err < 0) { 2249 mgmt_pending_remove(cmd); 2250 if (err == -ENODATA) 2251 err = set_connectable_update_settings(hdev, sk, 2252 cp->val); 2253 goto failed; 2254 } 2255 2256 failed: 2257 hci_dev_unlock(hdev); 2258 return err; 2259 } 2260 2261 static int set_bondable(struct sock *sk, struct hci_dev *hdev, void *data, 2262 u16 len) 2263 { 2264 struct mgmt_mode *cp = data; 2265 bool changed; 2266 int err; 2267 2268 BT_DBG("request for %s", hdev->name); 2269 2270 if (cp->val != 0x00 && cp->val != 0x01) 2271 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BONDABLE, 2272 MGMT_STATUS_INVALID_PARAMS); 2273 2274 hci_dev_lock(hdev); 2275 2276 if (cp->val) 2277 changed = !hci_dev_test_and_set_flag(hdev, HCI_BONDABLE); 2278 else 2279 changed = hci_dev_test_and_clear_flag(hdev, HCI_BONDABLE); 2280 2281 err = send_settings_rsp(sk, MGMT_OP_SET_BONDABLE, hdev); 2282 if (err < 0) 2283 goto unlock; 2284 2285 if (changed) 2286 err = new_settings(hdev, sk); 2287 2288 unlock: 2289 hci_dev_unlock(hdev); 2290 return err; 2291 } 2292 2293 static int set_link_security(struct sock *sk, struct hci_dev *hdev, void *data, 2294 u16 len) 2295 { 2296 struct mgmt_mode *cp = data; 2297 struct mgmt_pending_cmd *cmd; 2298 u8 val, status; 2299 int err; 2300 2301 BT_DBG("request for %s", hdev->name); 2302 2303 status = mgmt_bredr_support(hdev); 2304 if (status) 2305 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LINK_SECURITY, 2306 status); 2307 2308 if (cp->val != 0x00 && cp->val != 0x01) 2309 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LINK_SECURITY, 2310 MGMT_STATUS_INVALID_PARAMS); 2311 2312 hci_dev_lock(hdev); 2313 2314 if (!hdev_is_powered(hdev)) { 2315 bool changed = false; 2316 2317 if (!!cp->val != hci_dev_test_flag(hdev, HCI_LINK_SECURITY)) { 2318 hci_dev_change_flag(hdev, HCI_LINK_SECURITY); 2319 changed = true; 2320 } 2321 2322 err = send_settings_rsp(sk, MGMT_OP_SET_LINK_SECURITY, hdev); 2323 if (err < 0) 2324 goto failed; 2325 2326 if (changed) 2327 err = new_settings(hdev, sk); 2328 2329 goto failed; 2330 } 2331 2332 if (pending_find(MGMT_OP_SET_LINK_SECURITY, hdev)) { 2333 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LINK_SECURITY, 2334 MGMT_STATUS_BUSY); 2335 goto failed; 2336 } 2337 2338 val = !!cp->val; 2339 2340 if (test_bit(HCI_AUTH, &hdev->flags) == val) { 2341 err = send_settings_rsp(sk, MGMT_OP_SET_LINK_SECURITY, hdev); 2342 goto failed; 2343 } 2344 2345 cmd = mgmt_pending_add(sk, MGMT_OP_SET_LINK_SECURITY, hdev, data, len); 2346 if (!cmd) { 2347 err = -ENOMEM; 2348 goto failed; 2349 } 2350 2351 err = hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, sizeof(val), &val); 2352 if (err < 0) { 2353 mgmt_pending_remove(cmd); 2354 goto failed; 2355 } 2356 2357 failed: 2358 hci_dev_unlock(hdev); 2359 return err; 2360 } 2361 2362 static int set_ssp(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) 2363 { 2364 struct mgmt_mode *cp = data; 2365 struct mgmt_pending_cmd *cmd; 2366 u8 status; 2367 int err; 2368 2369 BT_DBG("request for %s", hdev->name); 2370 2371 status = mgmt_bredr_support(hdev); 2372 if (status) 2373 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SSP, status); 2374 2375 if (!lmp_ssp_capable(hdev)) 2376 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SSP, 2377 MGMT_STATUS_NOT_SUPPORTED); 2378 2379 if (cp->val != 0x00 && cp->val != 0x01) 2380 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SSP, 2381 MGMT_STATUS_INVALID_PARAMS); 2382 2383 hci_dev_lock(hdev); 2384 2385 if (!hdev_is_powered(hdev)) { 2386 bool changed; 2387 2388 if (cp->val) { 2389 changed = !hci_dev_test_and_set_flag(hdev, 2390 HCI_SSP_ENABLED); 2391 } else { 2392 changed = hci_dev_test_and_clear_flag(hdev, 2393 HCI_SSP_ENABLED); 2394 if (!changed) 2395 changed = hci_dev_test_and_clear_flag(hdev, 2396 HCI_HS_ENABLED); 2397 else 2398 hci_dev_clear_flag(hdev, HCI_HS_ENABLED); 2399 } 2400 2401 err = send_settings_rsp(sk, MGMT_OP_SET_SSP, hdev); 2402 if (err < 0) 2403 goto failed; 2404 2405 if (changed) 2406 err = new_settings(hdev, sk); 2407 2408 goto failed; 2409 } 2410 2411 if (pending_find(MGMT_OP_SET_SSP, hdev)) { 2412 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SSP, 2413 MGMT_STATUS_BUSY); 2414 goto failed; 2415 } 2416 2417 if (!!cp->val == hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { 2418 err = send_settings_rsp(sk, MGMT_OP_SET_SSP, hdev); 2419 goto failed; 2420 } 2421 2422 cmd = mgmt_pending_add(sk, MGMT_OP_SET_SSP, hdev, data, len); 2423 if (!cmd) { 2424 err = -ENOMEM; 2425 goto failed; 2426 } 2427 2428 if (!cp->val && hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS)) 2429 hci_send_cmd(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE, 2430 sizeof(cp->val), &cp->val); 2431 2432 err = hci_send_cmd(hdev, HCI_OP_WRITE_SSP_MODE, 1, &cp->val); 2433 if (err < 0) { 2434 mgmt_pending_remove(cmd); 2435 goto failed; 2436 } 2437 2438 failed: 2439 hci_dev_unlock(hdev); 2440 return err; 2441 } 2442 2443 static int set_hs(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) 2444 { 2445 struct mgmt_mode *cp = data; 2446 bool changed; 2447 u8 status; 2448 int err; 2449 2450 BT_DBG("request for %s", hdev->name); 2451 2452 status = mgmt_bredr_support(hdev); 2453 if (status) 2454 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS, status); 2455 2456 if (!lmp_ssp_capable(hdev)) 2457 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS, 2458 MGMT_STATUS_NOT_SUPPORTED); 2459 2460 if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) 2461 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS, 2462 MGMT_STATUS_REJECTED); 2463 2464 if (cp->val != 0x00 && cp->val != 0x01) 2465 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS, 2466 MGMT_STATUS_INVALID_PARAMS); 2467 2468 hci_dev_lock(hdev); 2469 2470 if (pending_find(MGMT_OP_SET_SSP, hdev)) { 2471 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS, 2472 MGMT_STATUS_BUSY); 2473 goto unlock; 2474 } 2475 2476 if (cp->val) { 2477 changed = !hci_dev_test_and_set_flag(hdev, HCI_HS_ENABLED); 2478 } else { 2479 if (hdev_is_powered(hdev)) { 2480 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS, 2481 MGMT_STATUS_REJECTED); 2482 goto unlock; 2483 } 2484 2485 changed = hci_dev_test_and_clear_flag(hdev, HCI_HS_ENABLED); 2486 } 2487 2488 err = send_settings_rsp(sk, MGMT_OP_SET_HS, hdev); 2489 if (err < 0) 2490 goto unlock; 2491 2492 if (changed) 2493 err = new_settings(hdev, sk); 2494 2495 unlock: 2496 hci_dev_unlock(hdev); 2497 return err; 2498 } 2499 2500 static void le_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode) 2501 { 2502 struct cmd_lookup match = { NULL, hdev }; 2503 2504 hci_dev_lock(hdev); 2505 2506 if (status) { 2507 u8 mgmt_err = mgmt_status(status); 2508 2509 mgmt_pending_foreach(MGMT_OP_SET_LE, hdev, cmd_status_rsp, 2510 &mgmt_err); 2511 goto unlock; 2512 } 2513 2514 mgmt_pending_foreach(MGMT_OP_SET_LE, hdev, settings_rsp, &match); 2515 2516 new_settings(hdev, match.sk); 2517 2518 if (match.sk) 2519 sock_put(match.sk); 2520 2521 /* Make sure the controller has a good default for 2522 * advertising data. Restrict the update to when LE 2523 * has actually been enabled. During power on, the 2524 * update in powered_update_hci will take care of it. 2525 */ 2526 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { 2527 struct hci_request req; 2528 2529 hci_req_init(&req, hdev); 2530 update_adv_data(&req); 2531 update_scan_rsp_data(&req); 2532 __hci_update_background_scan(&req); 2533 hci_req_run(&req, NULL); 2534 } 2535 2536 unlock: 2537 hci_dev_unlock(hdev); 2538 } 2539 2540 static int set_le(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) 2541 { 2542 struct mgmt_mode *cp = data; 2543 struct hci_cp_write_le_host_supported hci_cp; 2544 struct mgmt_pending_cmd *cmd; 2545 struct hci_request req; 2546 int err; 2547 u8 val, enabled; 2548 2549 BT_DBG("request for %s", hdev->name); 2550 2551 if (!lmp_le_capable(hdev)) 2552 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LE, 2553 MGMT_STATUS_NOT_SUPPORTED); 2554 2555 if (cp->val != 0x00 && cp->val != 0x01) 2556 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LE, 2557 MGMT_STATUS_INVALID_PARAMS); 2558 2559 /* Bluetooth single mode LE only controllers or dual-mode 2560 * controllers configured as LE only devices, do not allow 2561 * switching LE off. These have either LE enabled explicitly 2562 * or BR/EDR has been previously switched off. 2563 * 2564 * When trying to enable an already enabled LE, then gracefully 2565 * send a positive response. Trying to disable it however will 2566 * result into rejection. 2567 */ 2568 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { 2569 if (cp->val == 0x01) 2570 return send_settings_rsp(sk, MGMT_OP_SET_LE, hdev); 2571 2572 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LE, 2573 MGMT_STATUS_REJECTED); 2574 } 2575 2576 hci_dev_lock(hdev); 2577 2578 val = !!cp->val; 2579 enabled = lmp_host_le_capable(hdev); 2580 2581 if (!val) 2582 clear_adv_instance(hdev, NULL, 0x00, true); 2583 2584 if (!hdev_is_powered(hdev) || val == enabled) { 2585 bool changed = false; 2586 2587 if (val != hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { 2588 hci_dev_change_flag(hdev, HCI_LE_ENABLED); 2589 changed = true; 2590 } 2591 2592 if (!val && hci_dev_test_flag(hdev, HCI_ADVERTISING)) { 2593 hci_dev_clear_flag(hdev, HCI_ADVERTISING); 2594 changed = true; 2595 } 2596 2597 err = send_settings_rsp(sk, MGMT_OP_SET_LE, hdev); 2598 if (err < 0) 2599 goto unlock; 2600 2601 if (changed) 2602 err = new_settings(hdev, sk); 2603 2604 goto unlock; 2605 } 2606 2607 if (pending_find(MGMT_OP_SET_LE, hdev) || 2608 pending_find(MGMT_OP_SET_ADVERTISING, hdev)) { 2609 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LE, 2610 MGMT_STATUS_BUSY); 2611 goto unlock; 2612 } 2613 2614 cmd = mgmt_pending_add(sk, MGMT_OP_SET_LE, hdev, data, len); 2615 if (!cmd) { 2616 err = -ENOMEM; 2617 goto unlock; 2618 } 2619 2620 hci_req_init(&req, hdev); 2621 2622 memset(&hci_cp, 0, sizeof(hci_cp)); 2623 2624 if (val) { 2625 hci_cp.le = val; 2626 hci_cp.simul = 0x00; 2627 } else { 2628 if (hci_dev_test_flag(hdev, HCI_LE_ADV)) 2629 disable_advertising(&req); 2630 } 2631 2632 hci_req_add(&req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(hci_cp), 2633 &hci_cp); 2634 2635 err = hci_req_run(&req, le_enable_complete); 2636 if (err < 0) 2637 mgmt_pending_remove(cmd); 2638 2639 unlock: 2640 hci_dev_unlock(hdev); 2641 return err; 2642 } 2643 2644 /* This is a helper function to test for pending mgmt commands that can 2645 * cause CoD or EIR HCI commands. We can only allow one such pending 2646 * mgmt command at a time since otherwise we cannot easily track what 2647 * the current values are, will be, and based on that calculate if a new 2648 * HCI command needs to be sent and if yes with what value. 2649 */ 2650 static bool pending_eir_or_class(struct hci_dev *hdev) 2651 { 2652 struct mgmt_pending_cmd *cmd; 2653 2654 list_for_each_entry(cmd, &hdev->mgmt_pending, list) { 2655 switch (cmd->opcode) { 2656 case MGMT_OP_ADD_UUID: 2657 case MGMT_OP_REMOVE_UUID: 2658 case MGMT_OP_SET_DEV_CLASS: 2659 case MGMT_OP_SET_POWERED: 2660 return true; 2661 } 2662 } 2663 2664 return false; 2665 } 2666 2667 static const u8 bluetooth_base_uuid[] = { 2668 0xfb, 0x34, 0x9b, 0x5f, 0x80, 0x00, 0x00, 0x80, 2669 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 2670 }; 2671 2672 static u8 get_uuid_size(const u8 *uuid) 2673 { 2674 u32 val; 2675 2676 if (memcmp(uuid, bluetooth_base_uuid, 12)) 2677 return 128; 2678 2679 val = get_unaligned_le32(&uuid[12]); 2680 if (val > 0xffff) 2681 return 32; 2682 2683 return 16; 2684 } 2685 2686 static void mgmt_class_complete(struct hci_dev *hdev, u16 mgmt_op, u8 status) 2687 { 2688 struct mgmt_pending_cmd *cmd; 2689 2690 hci_dev_lock(hdev); 2691 2692 cmd = pending_find(mgmt_op, hdev); 2693 if (!cmd) 2694 goto unlock; 2695 2696 mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, 2697 mgmt_status(status), hdev->dev_class, 3); 2698 2699 mgmt_pending_remove(cmd); 2700 2701 unlock: 2702 hci_dev_unlock(hdev); 2703 } 2704 2705 static void add_uuid_complete(struct hci_dev *hdev, u8 status, u16 opcode) 2706 { 2707 BT_DBG("status 0x%02x", status); 2708 2709 mgmt_class_complete(hdev, MGMT_OP_ADD_UUID, status); 2710 } 2711 2712 static int add_uuid(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) 2713 { 2714 struct mgmt_cp_add_uuid *cp = data; 2715 struct mgmt_pending_cmd *cmd; 2716 struct hci_request req; 2717 struct bt_uuid *uuid; 2718 int err; 2719 2720 BT_DBG("request for %s", hdev->name); 2721 2722 hci_dev_lock(hdev); 2723 2724 if (pending_eir_or_class(hdev)) { 2725 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_UUID, 2726 MGMT_STATUS_BUSY); 2727 goto failed; 2728 } 2729 2730 uuid = kmalloc(sizeof(*uuid), GFP_KERNEL); 2731 if (!uuid) { 2732 err = -ENOMEM; 2733 goto failed; 2734 } 2735 2736 memcpy(uuid->uuid, cp->uuid, 16); 2737 uuid->svc_hint = cp->svc_hint; 2738 uuid->size = get_uuid_size(cp->uuid); 2739 2740 list_add_tail(&uuid->list, &hdev->uuids); 2741 2742 hci_req_init(&req, hdev); 2743 2744 update_class(&req); 2745 update_eir(&req); 2746 2747 err = hci_req_run(&req, add_uuid_complete); 2748 if (err < 0) { 2749 if (err != -ENODATA) 2750 goto failed; 2751 2752 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_UUID, 0, 2753 hdev->dev_class, 3); 2754 goto failed; 2755 } 2756 2757 cmd = mgmt_pending_add(sk, MGMT_OP_ADD_UUID, hdev, data, len); 2758 if (!cmd) { 2759 err = -ENOMEM; 2760 goto failed; 2761 } 2762 2763 err = 0; 2764 2765 failed: 2766 hci_dev_unlock(hdev); 2767 return err; 2768 } 2769 2770 static bool enable_service_cache(struct hci_dev *hdev) 2771 { 2772 if (!hdev_is_powered(hdev)) 2773 return false; 2774 2775 if (!hci_dev_test_and_set_flag(hdev, HCI_SERVICE_CACHE)) { 2776 queue_delayed_work(hdev->workqueue, &hdev->service_cache, 2777 CACHE_TIMEOUT); 2778 return true; 2779 } 2780 2781 return false; 2782 } 2783 2784 static void remove_uuid_complete(struct hci_dev *hdev, u8 status, u16 opcode) 2785 { 2786 BT_DBG("status 0x%02x", status); 2787 2788 mgmt_class_complete(hdev, MGMT_OP_REMOVE_UUID, status); 2789 } 2790 2791 static int remove_uuid(struct sock *sk, struct hci_dev *hdev, void *data, 2792 u16 len) 2793 { 2794 struct mgmt_cp_remove_uuid *cp = data; 2795 struct mgmt_pending_cmd *cmd; 2796 struct bt_uuid *match, *tmp; 2797 u8 bt_uuid_any[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; 2798 struct hci_request req; 2799 int err, found; 2800 2801 BT_DBG("request for %s", hdev->name); 2802 2803 hci_dev_lock(hdev); 2804 2805 if (pending_eir_or_class(hdev)) { 2806 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_UUID, 2807 MGMT_STATUS_BUSY); 2808 goto unlock; 2809 } 2810 2811 if (memcmp(cp->uuid, bt_uuid_any, 16) == 0) { 2812 hci_uuids_clear(hdev); 2813 2814 if (enable_service_cache(hdev)) { 2815 err = mgmt_cmd_complete(sk, hdev->id, 2816 MGMT_OP_REMOVE_UUID, 2817 0, hdev->dev_class, 3); 2818 goto unlock; 2819 } 2820 2821 goto update_class; 2822 } 2823 2824 found = 0; 2825 2826 list_for_each_entry_safe(match, tmp, &hdev->uuids, list) { 2827 if (memcmp(match->uuid, cp->uuid, 16) != 0) 2828 continue; 2829 2830 list_del(&match->list); 2831 kfree(match); 2832 found++; 2833 } 2834 2835 if (found == 0) { 2836 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_UUID, 2837 MGMT_STATUS_INVALID_PARAMS); 2838 goto unlock; 2839 } 2840 2841 update_class: 2842 hci_req_init(&req, hdev); 2843 2844 update_class(&req); 2845 update_eir(&req); 2846 2847 err = hci_req_run(&req, remove_uuid_complete); 2848 if (err < 0) { 2849 if (err != -ENODATA) 2850 goto unlock; 2851 2852 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_UUID, 0, 2853 hdev->dev_class, 3); 2854 goto unlock; 2855 } 2856 2857 cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_UUID, hdev, data, len); 2858 if (!cmd) { 2859 err = -ENOMEM; 2860 goto unlock; 2861 } 2862 2863 err = 0; 2864 2865 unlock: 2866 hci_dev_unlock(hdev); 2867 return err; 2868 } 2869 2870 static void set_class_complete(struct hci_dev *hdev, u8 status, u16 opcode) 2871 { 2872 BT_DBG("status 0x%02x", status); 2873 2874 mgmt_class_complete(hdev, MGMT_OP_SET_DEV_CLASS, status); 2875 } 2876 2877 static int set_dev_class(struct sock *sk, struct hci_dev *hdev, void *data, 2878 u16 len) 2879 { 2880 struct mgmt_cp_set_dev_class *cp = data; 2881 struct mgmt_pending_cmd *cmd; 2882 struct hci_request req; 2883 int err; 2884 2885 BT_DBG("request for %s", hdev->name); 2886 2887 if (!lmp_bredr_capable(hdev)) 2888 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, 2889 MGMT_STATUS_NOT_SUPPORTED); 2890 2891 hci_dev_lock(hdev); 2892 2893 if (pending_eir_or_class(hdev)) { 2894 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, 2895 MGMT_STATUS_BUSY); 2896 goto unlock; 2897 } 2898 2899 if ((cp->minor & 0x03) != 0 || (cp->major & 0xe0) != 0) { 2900 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, 2901 MGMT_STATUS_INVALID_PARAMS); 2902 goto unlock; 2903 } 2904 2905 hdev->major_class = cp->major; 2906 hdev->minor_class = cp->minor; 2907 2908 if (!hdev_is_powered(hdev)) { 2909 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, 0, 2910 hdev->dev_class, 3); 2911 goto unlock; 2912 } 2913 2914 hci_req_init(&req, hdev); 2915 2916 if (hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE)) { 2917 hci_dev_unlock(hdev); 2918 cancel_delayed_work_sync(&hdev->service_cache); 2919 hci_dev_lock(hdev); 2920 update_eir(&req); 2921 } 2922 2923 update_class(&req); 2924 2925 err = hci_req_run(&req, set_class_complete); 2926 if (err < 0) { 2927 if (err != -ENODATA) 2928 goto unlock; 2929 2930 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, 0, 2931 hdev->dev_class, 3); 2932 goto unlock; 2933 } 2934 2935 cmd = mgmt_pending_add(sk, MGMT_OP_SET_DEV_CLASS, hdev, data, len); 2936 if (!cmd) { 2937 err = -ENOMEM; 2938 goto unlock; 2939 } 2940 2941 err = 0; 2942 2943 unlock: 2944 hci_dev_unlock(hdev); 2945 return err; 2946 } 2947 2948 static int load_link_keys(struct sock *sk, struct hci_dev *hdev, void *data, 2949 u16 len) 2950 { 2951 struct mgmt_cp_load_link_keys *cp = data; 2952 const u16 max_key_count = ((U16_MAX - sizeof(*cp)) / 2953 sizeof(struct mgmt_link_key_info)); 2954 u16 key_count, expected_len; 2955 bool changed; 2956 int i; 2957 2958 BT_DBG("request for %s", hdev->name); 2959 2960 if (!lmp_bredr_capable(hdev)) 2961 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS, 2962 MGMT_STATUS_NOT_SUPPORTED); 2963 2964 key_count = __le16_to_cpu(cp->key_count); 2965 if (key_count > max_key_count) { 2966 BT_ERR("load_link_keys: too big key_count value %u", 2967 key_count); 2968 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS, 2969 MGMT_STATUS_INVALID_PARAMS); 2970 } 2971 2972 expected_len = sizeof(*cp) + key_count * 2973 sizeof(struct mgmt_link_key_info); 2974 if (expected_len != len) { 2975 BT_ERR("load_link_keys: expected %u bytes, got %u bytes", 2976 expected_len, len); 2977 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS, 2978 MGMT_STATUS_INVALID_PARAMS); 2979 } 2980 2981 if (cp->debug_keys != 0x00 && cp->debug_keys != 0x01) 2982 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS, 2983 MGMT_STATUS_INVALID_PARAMS); 2984 2985 BT_DBG("%s debug_keys %u key_count %u", hdev->name, cp->debug_keys, 2986 key_count); 2987 2988 for (i = 0; i < key_count; i++) { 2989 struct mgmt_link_key_info *key = &cp->keys[i]; 2990 2991 if (key->addr.type != BDADDR_BREDR || key->type > 0x08) 2992 return mgmt_cmd_status(sk, hdev->id, 2993 MGMT_OP_LOAD_LINK_KEYS, 2994 MGMT_STATUS_INVALID_PARAMS); 2995 } 2996 2997 hci_dev_lock(hdev); 2998 2999 hci_link_keys_clear(hdev); 3000 3001 if (cp->debug_keys) 3002 changed = !hci_dev_test_and_set_flag(hdev, HCI_KEEP_DEBUG_KEYS); 3003 else 3004 changed = hci_dev_test_and_clear_flag(hdev, 3005 HCI_KEEP_DEBUG_KEYS); 3006 3007 if (changed) 3008 new_settings(hdev, NULL); 3009 3010 for (i = 0; i < key_count; i++) { 3011 struct mgmt_link_key_info *key = &cp->keys[i]; 3012 3013 /* Always ignore debug keys and require a new pairing if 3014 * the user wants to use them. 3015 */ 3016 if (key->type == HCI_LK_DEBUG_COMBINATION) 3017 continue; 3018 3019 hci_add_link_key(hdev, NULL, &key->addr.bdaddr, key->val, 3020 key->type, key->pin_len, NULL); 3021 } 3022 3023 mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS, 0, NULL, 0); 3024 3025 hci_dev_unlock(hdev); 3026 3027 return 0; 3028 } 3029 3030 static int device_unpaired(struct hci_dev *hdev, bdaddr_t *bdaddr, 3031 u8 addr_type, struct sock *skip_sk) 3032 { 3033 struct mgmt_ev_device_unpaired ev; 3034 3035 bacpy(&ev.addr.bdaddr, bdaddr); 3036 ev.addr.type = addr_type; 3037 3038 return mgmt_event(MGMT_EV_DEVICE_UNPAIRED, hdev, &ev, sizeof(ev), 3039 skip_sk); 3040 } 3041 3042 static int unpair_device(struct sock *sk, struct hci_dev *hdev, void *data, 3043 u16 len) 3044 { 3045 struct mgmt_cp_unpair_device *cp = data; 3046 struct mgmt_rp_unpair_device rp; 3047 struct hci_cp_disconnect dc; 3048 struct mgmt_pending_cmd *cmd; 3049 struct hci_conn *conn; 3050 int err; 3051 3052 memset(&rp, 0, sizeof(rp)); 3053 bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr); 3054 rp.addr.type = cp->addr.type; 3055 3056 if (!bdaddr_type_is_valid(cp->addr.type)) 3057 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE, 3058 MGMT_STATUS_INVALID_PARAMS, 3059 &rp, sizeof(rp)); 3060 3061 if (cp->disconnect != 0x00 && cp->disconnect != 0x01) 3062 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE, 3063 MGMT_STATUS_INVALID_PARAMS, 3064 &rp, sizeof(rp)); 3065 3066 hci_dev_lock(hdev); 3067 3068 if (!hdev_is_powered(hdev)) { 3069 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE, 3070 MGMT_STATUS_NOT_POWERED, &rp, 3071 sizeof(rp)); 3072 goto unlock; 3073 } 3074 3075 if (cp->addr.type == BDADDR_BREDR) { 3076 /* If disconnection is requested, then look up the 3077 * connection. If the remote device is connected, it 3078 * will be later used to terminate the link. 3079 * 3080 * Setting it to NULL explicitly will cause no 3081 * termination of the link. 3082 */ 3083 if (cp->disconnect) 3084 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, 3085 &cp->addr.bdaddr); 3086 else 3087 conn = NULL; 3088 3089 err = hci_remove_link_key(hdev, &cp->addr.bdaddr); 3090 } else { 3091 u8 addr_type; 3092 3093 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, 3094 &cp->addr.bdaddr); 3095 if (conn) { 3096 /* Defer clearing up the connection parameters 3097 * until closing to give a chance of keeping 3098 * them if a repairing happens. 3099 */ 3100 set_bit(HCI_CONN_PARAM_REMOVAL_PEND, &conn->flags); 3101 3102 /* If disconnection is not requested, then 3103 * clear the connection variable so that the 3104 * link is not terminated. 3105 */ 3106 if (!cp->disconnect) 3107 conn = NULL; 3108 } 3109 3110 if (cp->addr.type == BDADDR_LE_PUBLIC) 3111 addr_type = ADDR_LE_DEV_PUBLIC; 3112 else 3113 addr_type = ADDR_LE_DEV_RANDOM; 3114 3115 hci_remove_irk(hdev, &cp->addr.bdaddr, addr_type); 3116 3117 err = hci_remove_ltk(hdev, &cp->addr.bdaddr, addr_type); 3118 } 3119 3120 if (err < 0) { 3121 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE, 3122 MGMT_STATUS_NOT_PAIRED, &rp, 3123 sizeof(rp)); 3124 goto unlock; 3125 } 3126 3127 /* If the connection variable is set, then termination of the 3128 * link is requested. 3129 */ 3130 if (!conn) { 3131 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE, 0, 3132 &rp, sizeof(rp)); 3133 device_unpaired(hdev, &cp->addr.bdaddr, cp->addr.type, sk); 3134 goto unlock; 3135 } 3136 3137 cmd = mgmt_pending_add(sk, MGMT_OP_UNPAIR_DEVICE, hdev, cp, 3138 sizeof(*cp)); 3139 if (!cmd) { 3140 err = -ENOMEM; 3141 goto unlock; 3142 } 3143 3144 cmd->cmd_complete = addr_cmd_complete; 3145 3146 dc.handle = cpu_to_le16(conn->handle); 3147 dc.reason = 0x13; /* Remote User Terminated Connection */ 3148 err = hci_send_cmd(hdev, HCI_OP_DISCONNECT, sizeof(dc), &dc); 3149 if (err < 0) 3150 mgmt_pending_remove(cmd); 3151 3152 unlock: 3153 hci_dev_unlock(hdev); 3154 return err; 3155 } 3156 3157 static int disconnect(struct sock *sk, struct hci_dev *hdev, void *data, 3158 u16 len) 3159 { 3160 struct mgmt_cp_disconnect *cp = data; 3161 struct mgmt_rp_disconnect rp; 3162 struct mgmt_pending_cmd *cmd; 3163 struct hci_conn *conn; 3164 int err; 3165 3166 BT_DBG(""); 3167 3168 memset(&rp, 0, sizeof(rp)); 3169 bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr); 3170 rp.addr.type = cp->addr.type; 3171 3172 if (!bdaddr_type_is_valid(cp->addr.type)) 3173 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT, 3174 MGMT_STATUS_INVALID_PARAMS, 3175 &rp, sizeof(rp)); 3176 3177 hci_dev_lock(hdev); 3178 3179 if (!test_bit(HCI_UP, &hdev->flags)) { 3180 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT, 3181 MGMT_STATUS_NOT_POWERED, &rp, 3182 sizeof(rp)); 3183 goto failed; 3184 } 3185 3186 if (pending_find(MGMT_OP_DISCONNECT, hdev)) { 3187 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT, 3188 MGMT_STATUS_BUSY, &rp, sizeof(rp)); 3189 goto failed; 3190 } 3191 3192 if (cp->addr.type == BDADDR_BREDR) 3193 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, 3194 &cp->addr.bdaddr); 3195 else 3196 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &cp->addr.bdaddr); 3197 3198 if (!conn || conn->state == BT_OPEN || conn->state == BT_CLOSED) { 3199 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT, 3200 MGMT_STATUS_NOT_CONNECTED, &rp, 3201 sizeof(rp)); 3202 goto failed; 3203 } 3204 3205 cmd = mgmt_pending_add(sk, MGMT_OP_DISCONNECT, hdev, data, len); 3206 if (!cmd) { 3207 err = -ENOMEM; 3208 goto failed; 3209 } 3210 3211 cmd->cmd_complete = generic_cmd_complete; 3212 3213 err = hci_disconnect(conn, HCI_ERROR_REMOTE_USER_TERM); 3214 if (err < 0) 3215 mgmt_pending_remove(cmd); 3216 3217 failed: 3218 hci_dev_unlock(hdev); 3219 return err; 3220 } 3221 3222 static u8 link_to_bdaddr(u8 link_type, u8 addr_type) 3223 { 3224 switch (link_type) { 3225 case LE_LINK: 3226 switch (addr_type) { 3227 case ADDR_LE_DEV_PUBLIC: 3228 return BDADDR_LE_PUBLIC; 3229 3230 default: 3231 /* Fallback to LE Random address type */ 3232 return BDADDR_LE_RANDOM; 3233 } 3234 3235 default: 3236 /* Fallback to BR/EDR type */ 3237 return BDADDR_BREDR; 3238 } 3239 } 3240 3241 static int get_connections(struct sock *sk, struct hci_dev *hdev, void *data, 3242 u16 data_len) 3243 { 3244 struct mgmt_rp_get_connections *rp; 3245 struct hci_conn *c; 3246 size_t rp_len; 3247 int err; 3248 u16 i; 3249 3250 BT_DBG(""); 3251 3252 hci_dev_lock(hdev); 3253 3254 if (!hdev_is_powered(hdev)) { 3255 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_GET_CONNECTIONS, 3256 MGMT_STATUS_NOT_POWERED); 3257 goto unlock; 3258 } 3259 3260 i = 0; 3261 list_for_each_entry(c, &hdev->conn_hash.list, list) { 3262 if (test_bit(HCI_CONN_MGMT_CONNECTED, &c->flags)) 3263 i++; 3264 } 3265 3266 rp_len = sizeof(*rp) + (i * sizeof(struct mgmt_addr_info)); 3267 rp = kmalloc(rp_len, GFP_KERNEL); 3268 if (!rp) { 3269 err = -ENOMEM; 3270 goto unlock; 3271 } 3272 3273 i = 0; 3274 list_for_each_entry(c, &hdev->conn_hash.list, list) { 3275 if (!test_bit(HCI_CONN_MGMT_CONNECTED, &c->flags)) 3276 continue; 3277 bacpy(&rp->addr[i].bdaddr, &c->dst); 3278 rp->addr[i].type = link_to_bdaddr(c->type, c->dst_type); 3279 if (c->type == SCO_LINK || c->type == ESCO_LINK) 3280 continue; 3281 i++; 3282 } 3283 3284 rp->conn_count = cpu_to_le16(i); 3285 3286 /* Recalculate length in case of filtered SCO connections, etc */ 3287 rp_len = sizeof(*rp) + (i * sizeof(struct mgmt_addr_info)); 3288 3289 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONNECTIONS, 0, rp, 3290 rp_len); 3291 3292 kfree(rp); 3293 3294 unlock: 3295 hci_dev_unlock(hdev); 3296 return err; 3297 } 3298 3299 static int send_pin_code_neg_reply(struct sock *sk, struct hci_dev *hdev, 3300 struct mgmt_cp_pin_code_neg_reply *cp) 3301 { 3302 struct mgmt_pending_cmd *cmd; 3303 int err; 3304 3305 cmd = mgmt_pending_add(sk, MGMT_OP_PIN_CODE_NEG_REPLY, hdev, cp, 3306 sizeof(*cp)); 3307 if (!cmd) 3308 return -ENOMEM; 3309 3310 err = hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY, 3311 sizeof(cp->addr.bdaddr), &cp->addr.bdaddr); 3312 if (err < 0) 3313 mgmt_pending_remove(cmd); 3314 3315 return err; 3316 } 3317 3318 static int pin_code_reply(struct sock *sk, struct hci_dev *hdev, void *data, 3319 u16 len) 3320 { 3321 struct hci_conn *conn; 3322 struct mgmt_cp_pin_code_reply *cp = data; 3323 struct hci_cp_pin_code_reply reply; 3324 struct mgmt_pending_cmd *cmd; 3325 int err; 3326 3327 BT_DBG(""); 3328 3329 hci_dev_lock(hdev); 3330 3331 if (!hdev_is_powered(hdev)) { 3332 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_PIN_CODE_REPLY, 3333 MGMT_STATUS_NOT_POWERED); 3334 goto failed; 3335 } 3336 3337 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->addr.bdaddr); 3338 if (!conn) { 3339 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_PIN_CODE_REPLY, 3340 MGMT_STATUS_NOT_CONNECTED); 3341 goto failed; 3342 } 3343 3344 if (conn->pending_sec_level == BT_SECURITY_HIGH && cp->pin_len != 16) { 3345 struct mgmt_cp_pin_code_neg_reply ncp; 3346 3347 memcpy(&ncp.addr, &cp->addr, sizeof(ncp.addr)); 3348 3349 BT_ERR("PIN code is not 16 bytes long"); 3350 3351 err = send_pin_code_neg_reply(sk, hdev, &ncp); 3352 if (err >= 0) 3353 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_PIN_CODE_REPLY, 3354 MGMT_STATUS_INVALID_PARAMS); 3355 3356 goto failed; 3357 } 3358 3359 cmd = mgmt_pending_add(sk, MGMT_OP_PIN_CODE_REPLY, hdev, data, len); 3360 if (!cmd) { 3361 err = -ENOMEM; 3362 goto failed; 3363 } 3364 3365 cmd->cmd_complete = addr_cmd_complete; 3366 3367 bacpy(&reply.bdaddr, &cp->addr.bdaddr); 3368 reply.pin_len = cp->pin_len; 3369 memcpy(reply.pin_code, cp->pin_code, sizeof(reply.pin_code)); 3370 3371 err = hci_send_cmd(hdev, HCI_OP_PIN_CODE_REPLY, sizeof(reply), &reply); 3372 if (err < 0) 3373 mgmt_pending_remove(cmd); 3374 3375 failed: 3376 hci_dev_unlock(hdev); 3377 return err; 3378 } 3379 3380 static int set_io_capability(struct sock *sk, struct hci_dev *hdev, void *data, 3381 u16 len) 3382 { 3383 struct mgmt_cp_set_io_capability *cp = data; 3384 3385 BT_DBG(""); 3386 3387 if (cp->io_capability > SMP_IO_KEYBOARD_DISPLAY) 3388 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_IO_CAPABILITY, 3389 MGMT_STATUS_INVALID_PARAMS, NULL, 0); 3390 3391 hci_dev_lock(hdev); 3392 3393 hdev->io_capability = cp->io_capability; 3394 3395 BT_DBG("%s IO capability set to 0x%02x", hdev->name, 3396 hdev->io_capability); 3397 3398 hci_dev_unlock(hdev); 3399 3400 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_IO_CAPABILITY, 0, 3401 NULL, 0); 3402 } 3403 3404 static struct mgmt_pending_cmd *find_pairing(struct hci_conn *conn) 3405 { 3406 struct hci_dev *hdev = conn->hdev; 3407 struct mgmt_pending_cmd *cmd; 3408 3409 list_for_each_entry(cmd, &hdev->mgmt_pending, list) { 3410 if (cmd->opcode != MGMT_OP_PAIR_DEVICE) 3411 continue; 3412 3413 if (cmd->user_data != conn) 3414 continue; 3415 3416 return cmd; 3417 } 3418 3419 return NULL; 3420 } 3421 3422 static int pairing_complete(struct mgmt_pending_cmd *cmd, u8 status) 3423 { 3424 struct mgmt_rp_pair_device rp; 3425 struct hci_conn *conn = cmd->user_data; 3426 int err; 3427 3428 bacpy(&rp.addr.bdaddr, &conn->dst); 3429 rp.addr.type = link_to_bdaddr(conn->type, conn->dst_type); 3430 3431 err = mgmt_cmd_complete(cmd->sk, cmd->index, MGMT_OP_PAIR_DEVICE, 3432 status, &rp, sizeof(rp)); 3433 3434 /* So we don't get further callbacks for this connection */ 3435 conn->connect_cfm_cb = NULL; 3436 conn->security_cfm_cb = NULL; 3437 conn->disconn_cfm_cb = NULL; 3438 3439 hci_conn_drop(conn); 3440 3441 /* The device is paired so there is no need to remove 3442 * its connection parameters anymore. 3443 */ 3444 clear_bit(HCI_CONN_PARAM_REMOVAL_PEND, &conn->flags); 3445 3446 hci_conn_put(conn); 3447 3448 return err; 3449 } 3450 3451 void mgmt_smp_complete(struct hci_conn *conn, bool complete) 3452 { 3453 u8 status = complete ? MGMT_STATUS_SUCCESS : MGMT_STATUS_FAILED; 3454 struct mgmt_pending_cmd *cmd; 3455 3456 cmd = find_pairing(conn); 3457 if (cmd) { 3458 cmd->cmd_complete(cmd, status); 3459 mgmt_pending_remove(cmd); 3460 } 3461 } 3462 3463 static void pairing_complete_cb(struct hci_conn *conn, u8 status) 3464 { 3465 struct mgmt_pending_cmd *cmd; 3466 3467 BT_DBG("status %u", status); 3468 3469 cmd = find_pairing(conn); 3470 if (!cmd) { 3471 BT_DBG("Unable to find a pending command"); 3472 return; 3473 } 3474 3475 cmd->cmd_complete(cmd, mgmt_status(status)); 3476 mgmt_pending_remove(cmd); 3477 } 3478 3479 static void le_pairing_complete_cb(struct hci_conn *conn, u8 status) 3480 { 3481 struct mgmt_pending_cmd *cmd; 3482 3483 BT_DBG("status %u", status); 3484 3485 if (!status) 3486 return; 3487 3488 cmd = find_pairing(conn); 3489 if (!cmd) { 3490 BT_DBG("Unable to find a pending command"); 3491 return; 3492 } 3493 3494 cmd->cmd_complete(cmd, mgmt_status(status)); 3495 mgmt_pending_remove(cmd); 3496 } 3497 3498 static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data, 3499 u16 len) 3500 { 3501 struct mgmt_cp_pair_device *cp = data; 3502 struct mgmt_rp_pair_device rp; 3503 struct mgmt_pending_cmd *cmd; 3504 u8 sec_level, auth_type; 3505 struct hci_conn *conn; 3506 int err; 3507 3508 BT_DBG(""); 3509 3510 memset(&rp, 0, sizeof(rp)); 3511 bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr); 3512 rp.addr.type = cp->addr.type; 3513 3514 if (!bdaddr_type_is_valid(cp->addr.type)) 3515 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE, 3516 MGMT_STATUS_INVALID_PARAMS, 3517 &rp, sizeof(rp)); 3518 3519 if (cp->io_cap > SMP_IO_KEYBOARD_DISPLAY) 3520 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE, 3521 MGMT_STATUS_INVALID_PARAMS, 3522 &rp, sizeof(rp)); 3523 3524 hci_dev_lock(hdev); 3525 3526 if (!hdev_is_powered(hdev)) { 3527 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE, 3528 MGMT_STATUS_NOT_POWERED, &rp, 3529 sizeof(rp)); 3530 goto unlock; 3531 } 3532 3533 if (hci_bdaddr_is_paired(hdev, &cp->addr.bdaddr, cp->addr.type)) { 3534 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE, 3535 MGMT_STATUS_ALREADY_PAIRED, &rp, 3536 sizeof(rp)); 3537 goto unlock; 3538 } 3539 3540 sec_level = BT_SECURITY_MEDIUM; 3541 auth_type = HCI_AT_DEDICATED_BONDING; 3542 3543 if (cp->addr.type == BDADDR_BREDR) { 3544 conn = hci_connect_acl(hdev, &cp->addr.bdaddr, sec_level, 3545 auth_type); 3546 } else { 3547 u8 addr_type; 3548 struct hci_conn_params *p; 3549 3550 /* Convert from L2CAP channel address type to HCI address type 3551 */ 3552 if (cp->addr.type == BDADDR_LE_PUBLIC) 3553 addr_type = ADDR_LE_DEV_PUBLIC; 3554 else 3555 addr_type = ADDR_LE_DEV_RANDOM; 3556 3557 /* When pairing a new device, it is expected to remember 3558 * this device for future connections. Adding the connection 3559 * parameter information ahead of time allows tracking 3560 * of the slave preferred values and will speed up any 3561 * further connection establishment. 3562 * 3563 * If connection parameters already exist, then they 3564 * will be kept and this function does nothing. 3565 */ 3566 p = hci_conn_params_add(hdev, &cp->addr.bdaddr, addr_type); 3567 3568 if (p->auto_connect == HCI_AUTO_CONN_EXPLICIT) 3569 p->auto_connect = HCI_AUTO_CONN_DISABLED; 3570 3571 conn = hci_connect_le_scan(hdev, &cp->addr.bdaddr, 3572 addr_type, sec_level, 3573 HCI_LE_CONN_TIMEOUT, 3574 HCI_ROLE_MASTER); 3575 } 3576 3577 if (IS_ERR(conn)) { 3578 int status; 3579 3580 if (PTR_ERR(conn) == -EBUSY) 3581 status = MGMT_STATUS_BUSY; 3582 else if (PTR_ERR(conn) == -EOPNOTSUPP) 3583 status = MGMT_STATUS_NOT_SUPPORTED; 3584 else if (PTR_ERR(conn) == -ECONNREFUSED) 3585 status = MGMT_STATUS_REJECTED; 3586 else 3587 status = MGMT_STATUS_CONNECT_FAILED; 3588 3589 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE, 3590 status, &rp, sizeof(rp)); 3591 goto unlock; 3592 } 3593 3594 if (conn->connect_cfm_cb) { 3595 hci_conn_drop(conn); 3596 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE, 3597 MGMT_STATUS_BUSY, &rp, sizeof(rp)); 3598 goto unlock; 3599 } 3600 3601 cmd = mgmt_pending_add(sk, MGMT_OP_PAIR_DEVICE, hdev, data, len); 3602 if (!cmd) { 3603 err = -ENOMEM; 3604 hci_conn_drop(conn); 3605 goto unlock; 3606 } 3607 3608 cmd->cmd_complete = pairing_complete; 3609 3610 /* For LE, just connecting isn't a proof that the pairing finished */ 3611 if (cp->addr.type == BDADDR_BREDR) { 3612 conn->connect_cfm_cb = pairing_complete_cb; 3613 conn->security_cfm_cb = pairing_complete_cb; 3614 conn->disconn_cfm_cb = pairing_complete_cb; 3615 } else { 3616 conn->connect_cfm_cb = le_pairing_complete_cb; 3617 conn->security_cfm_cb = le_pairing_complete_cb; 3618 conn->disconn_cfm_cb = le_pairing_complete_cb; 3619 } 3620 3621 conn->io_capability = cp->io_cap; 3622 cmd->user_data = hci_conn_get(conn); 3623 3624 if ((conn->state == BT_CONNECTED || conn->state == BT_CONFIG) && 3625 hci_conn_security(conn, sec_level, auth_type, true)) { 3626 cmd->cmd_complete(cmd, 0); 3627 mgmt_pending_remove(cmd); 3628 } 3629 3630 err = 0; 3631 3632 unlock: 3633 hci_dev_unlock(hdev); 3634 return err; 3635 } 3636 3637 static int cancel_pair_device(struct sock *sk, struct hci_dev *hdev, void *data, 3638 u16 len) 3639 { 3640 struct mgmt_addr_info *addr = data; 3641 struct mgmt_pending_cmd *cmd; 3642 struct hci_conn *conn; 3643 int err; 3644 3645 BT_DBG(""); 3646 3647 hci_dev_lock(hdev); 3648 3649 if (!hdev_is_powered(hdev)) { 3650 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE, 3651 MGMT_STATUS_NOT_POWERED); 3652 goto unlock; 3653 } 3654 3655 cmd = pending_find(MGMT_OP_PAIR_DEVICE, hdev); 3656 if (!cmd) { 3657 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE, 3658 MGMT_STATUS_INVALID_PARAMS); 3659 goto unlock; 3660 } 3661 3662 conn = cmd->user_data; 3663 3664 if (bacmp(&addr->bdaddr, &conn->dst) != 0) { 3665 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE, 3666 MGMT_STATUS_INVALID_PARAMS); 3667 goto unlock; 3668 } 3669 3670 cmd->cmd_complete(cmd, MGMT_STATUS_CANCELLED); 3671 mgmt_pending_remove(cmd); 3672 3673 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE, 0, 3674 addr, sizeof(*addr)); 3675 unlock: 3676 hci_dev_unlock(hdev); 3677 return err; 3678 } 3679 3680 static int user_pairing_resp(struct sock *sk, struct hci_dev *hdev, 3681 struct mgmt_addr_info *addr, u16 mgmt_op, 3682 u16 hci_op, __le32 passkey) 3683 { 3684 struct mgmt_pending_cmd *cmd; 3685 struct hci_conn *conn; 3686 int err; 3687 3688 hci_dev_lock(hdev); 3689 3690 if (!hdev_is_powered(hdev)) { 3691 err = mgmt_cmd_complete(sk, hdev->id, mgmt_op, 3692 MGMT_STATUS_NOT_POWERED, addr, 3693 sizeof(*addr)); 3694 goto done; 3695 } 3696 3697 if (addr->type == BDADDR_BREDR) 3698 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &addr->bdaddr); 3699 else 3700 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &addr->bdaddr); 3701 3702 if (!conn) { 3703 err = mgmt_cmd_complete(sk, hdev->id, mgmt_op, 3704 MGMT_STATUS_NOT_CONNECTED, addr, 3705 sizeof(*addr)); 3706 goto done; 3707 } 3708 3709 if (addr->type == BDADDR_LE_PUBLIC || addr->type == BDADDR_LE_RANDOM) { 3710 err = smp_user_confirm_reply(conn, mgmt_op, passkey); 3711 if (!err) 3712 err = mgmt_cmd_complete(sk, hdev->id, mgmt_op, 3713 MGMT_STATUS_SUCCESS, addr, 3714 sizeof(*addr)); 3715 else 3716 err = mgmt_cmd_complete(sk, hdev->id, mgmt_op, 3717 MGMT_STATUS_FAILED, addr, 3718 sizeof(*addr)); 3719 3720 goto done; 3721 } 3722 3723 cmd = mgmt_pending_add(sk, mgmt_op, hdev, addr, sizeof(*addr)); 3724 if (!cmd) { 3725 err = -ENOMEM; 3726 goto done; 3727 } 3728 3729 cmd->cmd_complete = addr_cmd_complete; 3730 3731 /* Continue with pairing via HCI */ 3732 if (hci_op == HCI_OP_USER_PASSKEY_REPLY) { 3733 struct hci_cp_user_passkey_reply cp; 3734 3735 bacpy(&cp.bdaddr, &addr->bdaddr); 3736 cp.passkey = passkey; 3737 err = hci_send_cmd(hdev, hci_op, sizeof(cp), &cp); 3738 } else 3739 err = hci_send_cmd(hdev, hci_op, sizeof(addr->bdaddr), 3740 &addr->bdaddr); 3741 3742 if (err < 0) 3743 mgmt_pending_remove(cmd); 3744 3745 done: 3746 hci_dev_unlock(hdev); 3747 return err; 3748 } 3749 3750 static int pin_code_neg_reply(struct sock *sk, struct hci_dev *hdev, 3751 void *data, u16 len) 3752 { 3753 struct mgmt_cp_pin_code_neg_reply *cp = data; 3754 3755 BT_DBG(""); 3756 3757 return user_pairing_resp(sk, hdev, &cp->addr, 3758 MGMT_OP_PIN_CODE_NEG_REPLY, 3759 HCI_OP_PIN_CODE_NEG_REPLY, 0); 3760 } 3761 3762 static int user_confirm_reply(struct sock *sk, struct hci_dev *hdev, void *data, 3763 u16 len) 3764 { 3765 struct mgmt_cp_user_confirm_reply *cp = data; 3766 3767 BT_DBG(""); 3768 3769 if (len != sizeof(*cp)) 3770 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_USER_CONFIRM_REPLY, 3771 MGMT_STATUS_INVALID_PARAMS); 3772 3773 return user_pairing_resp(sk, hdev, &cp->addr, 3774 MGMT_OP_USER_CONFIRM_REPLY, 3775 HCI_OP_USER_CONFIRM_REPLY, 0); 3776 } 3777 3778 static int user_confirm_neg_reply(struct sock *sk, struct hci_dev *hdev, 3779 void *data, u16 len) 3780 { 3781 struct mgmt_cp_user_confirm_neg_reply *cp = data; 3782 3783 BT_DBG(""); 3784 3785 return user_pairing_resp(sk, hdev, &cp->addr, 3786 MGMT_OP_USER_CONFIRM_NEG_REPLY, 3787 HCI_OP_USER_CONFIRM_NEG_REPLY, 0); 3788 } 3789 3790 static int user_passkey_reply(struct sock *sk, struct hci_dev *hdev, void *data, 3791 u16 len) 3792 { 3793 struct mgmt_cp_user_passkey_reply *cp = data; 3794 3795 BT_DBG(""); 3796 3797 return user_pairing_resp(sk, hdev, &cp->addr, 3798 MGMT_OP_USER_PASSKEY_REPLY, 3799 HCI_OP_USER_PASSKEY_REPLY, cp->passkey); 3800 } 3801 3802 static int user_passkey_neg_reply(struct sock *sk, struct hci_dev *hdev, 3803 void *data, u16 len) 3804 { 3805 struct mgmt_cp_user_passkey_neg_reply *cp = data; 3806 3807 BT_DBG(""); 3808 3809 return user_pairing_resp(sk, hdev, &cp->addr, 3810 MGMT_OP_USER_PASSKEY_NEG_REPLY, 3811 HCI_OP_USER_PASSKEY_NEG_REPLY, 0); 3812 } 3813 3814 static void update_name(struct hci_request *req) 3815 { 3816 struct hci_dev *hdev = req->hdev; 3817 struct hci_cp_write_local_name cp; 3818 3819 memcpy(cp.name, hdev->dev_name, sizeof(cp.name)); 3820 3821 hci_req_add(req, HCI_OP_WRITE_LOCAL_NAME, sizeof(cp), &cp); 3822 } 3823 3824 static void set_name_complete(struct hci_dev *hdev, u8 status, u16 opcode) 3825 { 3826 struct mgmt_cp_set_local_name *cp; 3827 struct mgmt_pending_cmd *cmd; 3828 3829 BT_DBG("status 0x%02x", status); 3830 3831 hci_dev_lock(hdev); 3832 3833 cmd = pending_find(MGMT_OP_SET_LOCAL_NAME, hdev); 3834 if (!cmd) 3835 goto unlock; 3836 3837 cp = cmd->param; 3838 3839 if (status) 3840 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 3841 mgmt_status(status)); 3842 else 3843 mgmt_cmd_complete(cmd->sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0, 3844 cp, sizeof(*cp)); 3845 3846 mgmt_pending_remove(cmd); 3847 3848 unlock: 3849 hci_dev_unlock(hdev); 3850 } 3851 3852 static int set_local_name(struct sock *sk, struct hci_dev *hdev, void *data, 3853 u16 len) 3854 { 3855 struct mgmt_cp_set_local_name *cp = data; 3856 struct mgmt_pending_cmd *cmd; 3857 struct hci_request req; 3858 int err; 3859 3860 BT_DBG(""); 3861 3862 hci_dev_lock(hdev); 3863 3864 /* If the old values are the same as the new ones just return a 3865 * direct command complete event. 3866 */ 3867 if (!memcmp(hdev->dev_name, cp->name, sizeof(hdev->dev_name)) && 3868 !memcmp(hdev->short_name, cp->short_name, 3869 sizeof(hdev->short_name))) { 3870 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0, 3871 data, len); 3872 goto failed; 3873 } 3874 3875 memcpy(hdev->short_name, cp->short_name, sizeof(hdev->short_name)); 3876 3877 if (!hdev_is_powered(hdev)) { 3878 memcpy(hdev->dev_name, cp->name, sizeof(hdev->dev_name)); 3879 3880 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0, 3881 data, len); 3882 if (err < 0) 3883 goto failed; 3884 3885 err = mgmt_generic_event(MGMT_EV_LOCAL_NAME_CHANGED, hdev, 3886 data, len, sk); 3887 3888 goto failed; 3889 } 3890 3891 cmd = mgmt_pending_add(sk, MGMT_OP_SET_LOCAL_NAME, hdev, data, len); 3892 if (!cmd) { 3893 err = -ENOMEM; 3894 goto failed; 3895 } 3896 3897 memcpy(hdev->dev_name, cp->name, sizeof(hdev->dev_name)); 3898 3899 hci_req_init(&req, hdev); 3900 3901 if (lmp_bredr_capable(hdev)) { 3902 update_name(&req); 3903 update_eir(&req); 3904 } 3905 3906 /* The name is stored in the scan response data and so 3907 * no need to udpate the advertising data here. 3908 */ 3909 if (lmp_le_capable(hdev)) 3910 update_scan_rsp_data(&req); 3911 3912 err = hci_req_run(&req, set_name_complete); 3913 if (err < 0) 3914 mgmt_pending_remove(cmd); 3915 3916 failed: 3917 hci_dev_unlock(hdev); 3918 return err; 3919 } 3920 3921 static void read_local_oob_data_complete(struct hci_dev *hdev, u8 status, 3922 u16 opcode, struct sk_buff *skb) 3923 { 3924 struct mgmt_rp_read_local_oob_data mgmt_rp; 3925 size_t rp_size = sizeof(mgmt_rp); 3926 struct mgmt_pending_cmd *cmd; 3927 3928 BT_DBG("%s status %u", hdev->name, status); 3929 3930 cmd = pending_find(MGMT_OP_READ_LOCAL_OOB_DATA, hdev); 3931 if (!cmd) 3932 return; 3933 3934 if (status || !skb) { 3935 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA, 3936 status ? mgmt_status(status) : MGMT_STATUS_FAILED); 3937 goto remove; 3938 } 3939 3940 memset(&mgmt_rp, 0, sizeof(mgmt_rp)); 3941 3942 if (opcode == HCI_OP_READ_LOCAL_OOB_DATA) { 3943 struct hci_rp_read_local_oob_data *rp = (void *) skb->data; 3944 3945 if (skb->len < sizeof(*rp)) { 3946 mgmt_cmd_status(cmd->sk, hdev->id, 3947 MGMT_OP_READ_LOCAL_OOB_DATA, 3948 MGMT_STATUS_FAILED); 3949 goto remove; 3950 } 3951 3952 memcpy(mgmt_rp.hash192, rp->hash, sizeof(rp->hash)); 3953 memcpy(mgmt_rp.rand192, rp->rand, sizeof(rp->rand)); 3954 3955 rp_size -= sizeof(mgmt_rp.hash256) + sizeof(mgmt_rp.rand256); 3956 } else { 3957 struct hci_rp_read_local_oob_ext_data *rp = (void *) skb->data; 3958 3959 if (skb->len < sizeof(*rp)) { 3960 mgmt_cmd_status(cmd->sk, hdev->id, 3961 MGMT_OP_READ_LOCAL_OOB_DATA, 3962 MGMT_STATUS_FAILED); 3963 goto remove; 3964 } 3965 3966 memcpy(mgmt_rp.hash192, rp->hash192, sizeof(rp->hash192)); 3967 memcpy(mgmt_rp.rand192, rp->rand192, sizeof(rp->rand192)); 3968 3969 memcpy(mgmt_rp.hash256, rp->hash256, sizeof(rp->hash256)); 3970 memcpy(mgmt_rp.rand256, rp->rand256, sizeof(rp->rand256)); 3971 } 3972 3973 mgmt_cmd_complete(cmd->sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA, 3974 MGMT_STATUS_SUCCESS, &mgmt_rp, rp_size); 3975 3976 remove: 3977 mgmt_pending_remove(cmd); 3978 } 3979 3980 static int read_local_oob_data(struct sock *sk, struct hci_dev *hdev, 3981 void *data, u16 data_len) 3982 { 3983 struct mgmt_pending_cmd *cmd; 3984 struct hci_request req; 3985 int err; 3986 3987 BT_DBG("%s", hdev->name); 3988 3989 hci_dev_lock(hdev); 3990 3991 if (!hdev_is_powered(hdev)) { 3992 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA, 3993 MGMT_STATUS_NOT_POWERED); 3994 goto unlock; 3995 } 3996 3997 if (!lmp_ssp_capable(hdev)) { 3998 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA, 3999 MGMT_STATUS_NOT_SUPPORTED); 4000 goto unlock; 4001 } 4002 4003 if (pending_find(MGMT_OP_READ_LOCAL_OOB_DATA, hdev)) { 4004 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA, 4005 MGMT_STATUS_BUSY); 4006 goto unlock; 4007 } 4008 4009 cmd = mgmt_pending_add(sk, MGMT_OP_READ_LOCAL_OOB_DATA, hdev, NULL, 0); 4010 if (!cmd) { 4011 err = -ENOMEM; 4012 goto unlock; 4013 } 4014 4015 hci_req_init(&req, hdev); 4016 4017 if (bredr_sc_enabled(hdev)) 4018 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_EXT_DATA, 0, NULL); 4019 else 4020 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_DATA, 0, NULL); 4021 4022 err = hci_req_run_skb(&req, read_local_oob_data_complete); 4023 if (err < 0) 4024 mgmt_pending_remove(cmd); 4025 4026 unlock: 4027 hci_dev_unlock(hdev); 4028 return err; 4029 } 4030 4031 static int add_remote_oob_data(struct sock *sk, struct hci_dev *hdev, 4032 void *data, u16 len) 4033 { 4034 struct mgmt_addr_info *addr = data; 4035 int err; 4036 4037 BT_DBG("%s ", hdev->name); 4038 4039 if (!bdaddr_type_is_valid(addr->type)) 4040 return mgmt_cmd_complete(sk, hdev->id, 4041 MGMT_OP_ADD_REMOTE_OOB_DATA, 4042 MGMT_STATUS_INVALID_PARAMS, 4043 addr, sizeof(*addr)); 4044 4045 hci_dev_lock(hdev); 4046 4047 if (len == MGMT_ADD_REMOTE_OOB_DATA_SIZE) { 4048 struct mgmt_cp_add_remote_oob_data *cp = data; 4049 u8 status; 4050 4051 if (cp->addr.type != BDADDR_BREDR) { 4052 err = mgmt_cmd_complete(sk, hdev->id, 4053 MGMT_OP_ADD_REMOTE_OOB_DATA, 4054 MGMT_STATUS_INVALID_PARAMS, 4055 &cp->addr, sizeof(cp->addr)); 4056 goto unlock; 4057 } 4058 4059 err = hci_add_remote_oob_data(hdev, &cp->addr.bdaddr, 4060 cp->addr.type, cp->hash, 4061 cp->rand, NULL, NULL); 4062 if (err < 0) 4063 status = MGMT_STATUS_FAILED; 4064 else 4065 status = MGMT_STATUS_SUCCESS; 4066 4067 err = mgmt_cmd_complete(sk, hdev->id, 4068 MGMT_OP_ADD_REMOTE_OOB_DATA, status, 4069 &cp->addr, sizeof(cp->addr)); 4070 } else if (len == MGMT_ADD_REMOTE_OOB_EXT_DATA_SIZE) { 4071 struct mgmt_cp_add_remote_oob_ext_data *cp = data; 4072 u8 *rand192, *hash192, *rand256, *hash256; 4073 u8 status; 4074 4075 if (bdaddr_type_is_le(cp->addr.type)) { 4076 /* Enforce zero-valued 192-bit parameters as 4077 * long as legacy SMP OOB isn't implemented. 4078 */ 4079 if (memcmp(cp->rand192, ZERO_KEY, 16) || 4080 memcmp(cp->hash192, ZERO_KEY, 16)) { 4081 err = mgmt_cmd_complete(sk, hdev->id, 4082 MGMT_OP_ADD_REMOTE_OOB_DATA, 4083 MGMT_STATUS_INVALID_PARAMS, 4084 addr, sizeof(*addr)); 4085 goto unlock; 4086 } 4087 4088 rand192 = NULL; 4089 hash192 = NULL; 4090 } else { 4091 /* In case one of the P-192 values is set to zero, 4092 * then just disable OOB data for P-192. 4093 */ 4094 if (!memcmp(cp->rand192, ZERO_KEY, 16) || 4095 !memcmp(cp->hash192, ZERO_KEY, 16)) { 4096 rand192 = NULL; 4097 hash192 = NULL; 4098 } else { 4099 rand192 = cp->rand192; 4100 hash192 = cp->hash192; 4101 } 4102 } 4103 4104 /* In case one of the P-256 values is set to zero, then just 4105 * disable OOB data for P-256. 4106 */ 4107 if (!memcmp(cp->rand256, ZERO_KEY, 16) || 4108 !memcmp(cp->hash256, ZERO_KEY, 16)) { 4109 rand256 = NULL; 4110 hash256 = NULL; 4111 } else { 4112 rand256 = cp->rand256; 4113 hash256 = cp->hash256; 4114 } 4115 4116 err = hci_add_remote_oob_data(hdev, &cp->addr.bdaddr, 4117 cp->addr.type, hash192, rand192, 4118 hash256, rand256); 4119 if (err < 0) 4120 status = MGMT_STATUS_FAILED; 4121 else 4122 status = MGMT_STATUS_SUCCESS; 4123 4124 err = mgmt_cmd_complete(sk, hdev->id, 4125 MGMT_OP_ADD_REMOTE_OOB_DATA, 4126 status, &cp->addr, sizeof(cp->addr)); 4127 } else { 4128 BT_ERR("add_remote_oob_data: invalid length of %u bytes", len); 4129 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_REMOTE_OOB_DATA, 4130 MGMT_STATUS_INVALID_PARAMS); 4131 } 4132 4133 unlock: 4134 hci_dev_unlock(hdev); 4135 return err; 4136 } 4137 4138 static int remove_remote_oob_data(struct sock *sk, struct hci_dev *hdev, 4139 void *data, u16 len) 4140 { 4141 struct mgmt_cp_remove_remote_oob_data *cp = data; 4142 u8 status; 4143 int err; 4144 4145 BT_DBG("%s", hdev->name); 4146 4147 if (cp->addr.type != BDADDR_BREDR) 4148 return mgmt_cmd_complete(sk, hdev->id, 4149 MGMT_OP_REMOVE_REMOTE_OOB_DATA, 4150 MGMT_STATUS_INVALID_PARAMS, 4151 &cp->addr, sizeof(cp->addr)); 4152 4153 hci_dev_lock(hdev); 4154 4155 if (!bacmp(&cp->addr.bdaddr, BDADDR_ANY)) { 4156 hci_remote_oob_data_clear(hdev); 4157 status = MGMT_STATUS_SUCCESS; 4158 goto done; 4159 } 4160 4161 err = hci_remove_remote_oob_data(hdev, &cp->addr.bdaddr, cp->addr.type); 4162 if (err < 0) 4163 status = MGMT_STATUS_INVALID_PARAMS; 4164 else 4165 status = MGMT_STATUS_SUCCESS; 4166 4167 done: 4168 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_REMOTE_OOB_DATA, 4169 status, &cp->addr, sizeof(cp->addr)); 4170 4171 hci_dev_unlock(hdev); 4172 return err; 4173 } 4174 4175 static bool trigger_bredr_inquiry(struct hci_request *req, u8 *status) 4176 { 4177 struct hci_dev *hdev = req->hdev; 4178 struct hci_cp_inquiry cp; 4179 /* General inquiry access code (GIAC) */ 4180 u8 lap[3] = { 0x33, 0x8b, 0x9e }; 4181 4182 *status = mgmt_bredr_support(hdev); 4183 if (*status) 4184 return false; 4185 4186 if (hci_dev_test_flag(hdev, HCI_INQUIRY)) { 4187 *status = MGMT_STATUS_BUSY; 4188 return false; 4189 } 4190 4191 hci_inquiry_cache_flush(hdev); 4192 4193 memset(&cp, 0, sizeof(cp)); 4194 memcpy(&cp.lap, lap, sizeof(cp.lap)); 4195 cp.length = DISCOV_BREDR_INQUIRY_LEN; 4196 4197 hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); 4198 4199 return true; 4200 } 4201 4202 static bool trigger_le_scan(struct hci_request *req, u16 interval, u8 *status) 4203 { 4204 struct hci_dev *hdev = req->hdev; 4205 struct hci_cp_le_set_scan_param param_cp; 4206 struct hci_cp_le_set_scan_enable enable_cp; 4207 u8 own_addr_type; 4208 int err; 4209 4210 *status = mgmt_le_support(hdev); 4211 if (*status) 4212 return false; 4213 4214 if (hci_dev_test_flag(hdev, HCI_LE_ADV)) { 4215 /* Don't let discovery abort an outgoing connection attempt 4216 * that's using directed advertising. 4217 */ 4218 if (hci_lookup_le_connect(hdev)) { 4219 *status = MGMT_STATUS_REJECTED; 4220 return false; 4221 } 4222 4223 cancel_adv_timeout(hdev); 4224 disable_advertising(req); 4225 } 4226 4227 /* If controller is scanning, it means the background scanning is 4228 * running. Thus, we should temporarily stop it in order to set the 4229 * discovery scanning parameters. 4230 */ 4231 if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) 4232 hci_req_add_le_scan_disable(req); 4233 4234 /* All active scans will be done with either a resolvable private 4235 * address (when privacy feature has been enabled) or non-resolvable 4236 * private address. 4237 */ 4238 err = hci_update_random_address(req, true, &own_addr_type); 4239 if (err < 0) { 4240 *status = MGMT_STATUS_FAILED; 4241 return false; 4242 } 4243 4244 memset(¶m_cp, 0, sizeof(param_cp)); 4245 param_cp.type = LE_SCAN_ACTIVE; 4246 param_cp.interval = cpu_to_le16(interval); 4247 param_cp.window = cpu_to_le16(DISCOV_LE_SCAN_WIN); 4248 param_cp.own_address_type = own_addr_type; 4249 4250 hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp), 4251 ¶m_cp); 4252 4253 memset(&enable_cp, 0, sizeof(enable_cp)); 4254 enable_cp.enable = LE_SCAN_ENABLE; 4255 enable_cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE; 4256 4257 hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp), 4258 &enable_cp); 4259 4260 return true; 4261 } 4262 4263 static bool trigger_discovery(struct hci_request *req, u8 *status) 4264 { 4265 struct hci_dev *hdev = req->hdev; 4266 4267 switch (hdev->discovery.type) { 4268 case DISCOV_TYPE_BREDR: 4269 if (!trigger_bredr_inquiry(req, status)) 4270 return false; 4271 break; 4272 4273 case DISCOV_TYPE_INTERLEAVED: 4274 if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, 4275 &hdev->quirks)) { 4276 /* During simultaneous discovery, we double LE scan 4277 * interval. We must leave some time for the controller 4278 * to do BR/EDR inquiry. 4279 */ 4280 if (!trigger_le_scan(req, DISCOV_LE_SCAN_INT * 2, 4281 status)) 4282 return false; 4283 4284 if (!trigger_bredr_inquiry(req, status)) 4285 return false; 4286 4287 return true; 4288 } 4289 4290 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { 4291 *status = MGMT_STATUS_NOT_SUPPORTED; 4292 return false; 4293 } 4294 /* fall through */ 4295 4296 case DISCOV_TYPE_LE: 4297 if (!trigger_le_scan(req, DISCOV_LE_SCAN_INT, status)) 4298 return false; 4299 break; 4300 4301 default: 4302 *status = MGMT_STATUS_INVALID_PARAMS; 4303 return false; 4304 } 4305 4306 return true; 4307 } 4308 4309 static void start_discovery_complete(struct hci_dev *hdev, u8 status, 4310 u16 opcode) 4311 { 4312 struct mgmt_pending_cmd *cmd; 4313 unsigned long timeout; 4314 4315 BT_DBG("status %d", status); 4316 4317 hci_dev_lock(hdev); 4318 4319 cmd = pending_find(MGMT_OP_START_DISCOVERY, hdev); 4320 if (!cmd) 4321 cmd = pending_find(MGMT_OP_START_SERVICE_DISCOVERY, hdev); 4322 4323 if (cmd) { 4324 cmd->cmd_complete(cmd, mgmt_status(status)); 4325 mgmt_pending_remove(cmd); 4326 } 4327 4328 if (status) { 4329 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 4330 goto unlock; 4331 } 4332 4333 hci_discovery_set_state(hdev, DISCOVERY_FINDING); 4334 4335 /* If the scan involves LE scan, pick proper timeout to schedule 4336 * hdev->le_scan_disable that will stop it. 4337 */ 4338 switch (hdev->discovery.type) { 4339 case DISCOV_TYPE_LE: 4340 timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT); 4341 break; 4342 case DISCOV_TYPE_INTERLEAVED: 4343 /* When running simultaneous discovery, the LE scanning time 4344 * should occupy the whole discovery time sine BR/EDR inquiry 4345 * and LE scanning are scheduled by the controller. 4346 * 4347 * For interleaving discovery in comparison, BR/EDR inquiry 4348 * and LE scanning are done sequentially with separate 4349 * timeouts. 4350 */ 4351 if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 4352 timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT); 4353 else 4354 timeout = msecs_to_jiffies(hdev->discov_interleaved_timeout); 4355 break; 4356 case DISCOV_TYPE_BREDR: 4357 timeout = 0; 4358 break; 4359 default: 4360 BT_ERR("Invalid discovery type %d", hdev->discovery.type); 4361 timeout = 0; 4362 break; 4363 } 4364 4365 if (timeout) { 4366 /* When service discovery is used and the controller has 4367 * a strict duplicate filter, it is important to remember 4368 * the start and duration of the scan. This is required 4369 * for restarting scanning during the discovery phase. 4370 */ 4371 if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, 4372 &hdev->quirks) && 4373 hdev->discovery.result_filtering) { 4374 hdev->discovery.scan_start = jiffies; 4375 hdev->discovery.scan_duration = timeout; 4376 } 4377 4378 queue_delayed_work(hdev->workqueue, 4379 &hdev->le_scan_disable, timeout); 4380 } 4381 4382 unlock: 4383 hci_dev_unlock(hdev); 4384 } 4385 4386 static int start_discovery(struct sock *sk, struct hci_dev *hdev, 4387 void *data, u16 len) 4388 { 4389 struct mgmt_cp_start_discovery *cp = data; 4390 struct mgmt_pending_cmd *cmd; 4391 struct hci_request req; 4392 u8 status; 4393 int err; 4394 4395 BT_DBG("%s", hdev->name); 4396 4397 hci_dev_lock(hdev); 4398 4399 if (!hdev_is_powered(hdev)) { 4400 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY, 4401 MGMT_STATUS_NOT_POWERED, 4402 &cp->type, sizeof(cp->type)); 4403 goto failed; 4404 } 4405 4406 if (hdev->discovery.state != DISCOVERY_STOPPED || 4407 hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) { 4408 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY, 4409 MGMT_STATUS_BUSY, &cp->type, 4410 sizeof(cp->type)); 4411 goto failed; 4412 } 4413 4414 cmd = mgmt_pending_add(sk, MGMT_OP_START_DISCOVERY, hdev, data, len); 4415 if (!cmd) { 4416 err = -ENOMEM; 4417 goto failed; 4418 } 4419 4420 cmd->cmd_complete = generic_cmd_complete; 4421 4422 /* Clear the discovery filter first to free any previously 4423 * allocated memory for the UUID list. 4424 */ 4425 hci_discovery_filter_clear(hdev); 4426 4427 hdev->discovery.type = cp->type; 4428 hdev->discovery.report_invalid_rssi = false; 4429 4430 hci_req_init(&req, hdev); 4431 4432 if (!trigger_discovery(&req, &status)) { 4433 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY, 4434 status, &cp->type, sizeof(cp->type)); 4435 mgmt_pending_remove(cmd); 4436 goto failed; 4437 } 4438 4439 err = hci_req_run(&req, start_discovery_complete); 4440 if (err < 0) { 4441 mgmt_pending_remove(cmd); 4442 goto failed; 4443 } 4444 4445 hci_discovery_set_state(hdev, DISCOVERY_STARTING); 4446 4447 failed: 4448 hci_dev_unlock(hdev); 4449 return err; 4450 } 4451 4452 static int service_discovery_cmd_complete(struct mgmt_pending_cmd *cmd, 4453 u8 status) 4454 { 4455 return mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status, 4456 cmd->param, 1); 4457 } 4458 4459 static int start_service_discovery(struct sock *sk, struct hci_dev *hdev, 4460 void *data, u16 len) 4461 { 4462 struct mgmt_cp_start_service_discovery *cp = data; 4463 struct mgmt_pending_cmd *cmd; 4464 struct hci_request req; 4465 const u16 max_uuid_count = ((U16_MAX - sizeof(*cp)) / 16); 4466 u16 uuid_count, expected_len; 4467 u8 status; 4468 int err; 4469 4470 BT_DBG("%s", hdev->name); 4471 4472 hci_dev_lock(hdev); 4473 4474 if (!hdev_is_powered(hdev)) { 4475 err = mgmt_cmd_complete(sk, hdev->id, 4476 MGMT_OP_START_SERVICE_DISCOVERY, 4477 MGMT_STATUS_NOT_POWERED, 4478 &cp->type, sizeof(cp->type)); 4479 goto failed; 4480 } 4481 4482 if (hdev->discovery.state != DISCOVERY_STOPPED || 4483 hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) { 4484 err = mgmt_cmd_complete(sk, hdev->id, 4485 MGMT_OP_START_SERVICE_DISCOVERY, 4486 MGMT_STATUS_BUSY, &cp->type, 4487 sizeof(cp->type)); 4488 goto failed; 4489 } 4490 4491 uuid_count = __le16_to_cpu(cp->uuid_count); 4492 if (uuid_count > max_uuid_count) { 4493 BT_ERR("service_discovery: too big uuid_count value %u", 4494 uuid_count); 4495 err = mgmt_cmd_complete(sk, hdev->id, 4496 MGMT_OP_START_SERVICE_DISCOVERY, 4497 MGMT_STATUS_INVALID_PARAMS, &cp->type, 4498 sizeof(cp->type)); 4499 goto failed; 4500 } 4501 4502 expected_len = sizeof(*cp) + uuid_count * 16; 4503 if (expected_len != len) { 4504 BT_ERR("service_discovery: expected %u bytes, got %u bytes", 4505 expected_len, len); 4506 err = mgmt_cmd_complete(sk, hdev->id, 4507 MGMT_OP_START_SERVICE_DISCOVERY, 4508 MGMT_STATUS_INVALID_PARAMS, &cp->type, 4509 sizeof(cp->type)); 4510 goto failed; 4511 } 4512 4513 cmd = mgmt_pending_add(sk, MGMT_OP_START_SERVICE_DISCOVERY, 4514 hdev, data, len); 4515 if (!cmd) { 4516 err = -ENOMEM; 4517 goto failed; 4518 } 4519 4520 cmd->cmd_complete = service_discovery_cmd_complete; 4521 4522 /* Clear the discovery filter first to free any previously 4523 * allocated memory for the UUID list. 4524 */ 4525 hci_discovery_filter_clear(hdev); 4526 4527 hdev->discovery.result_filtering = true; 4528 hdev->discovery.type = cp->type; 4529 hdev->discovery.rssi = cp->rssi; 4530 hdev->discovery.uuid_count = uuid_count; 4531 4532 if (uuid_count > 0) { 4533 hdev->discovery.uuids = kmemdup(cp->uuids, uuid_count * 16, 4534 GFP_KERNEL); 4535 if (!hdev->discovery.uuids) { 4536 err = mgmt_cmd_complete(sk, hdev->id, 4537 MGMT_OP_START_SERVICE_DISCOVERY, 4538 MGMT_STATUS_FAILED, 4539 &cp->type, sizeof(cp->type)); 4540 mgmt_pending_remove(cmd); 4541 goto failed; 4542 } 4543 } 4544 4545 hci_req_init(&req, hdev); 4546 4547 if (!trigger_discovery(&req, &status)) { 4548 err = mgmt_cmd_complete(sk, hdev->id, 4549 MGMT_OP_START_SERVICE_DISCOVERY, 4550 status, &cp->type, sizeof(cp->type)); 4551 mgmt_pending_remove(cmd); 4552 goto failed; 4553 } 4554 4555 err = hci_req_run(&req, start_discovery_complete); 4556 if (err < 0) { 4557 mgmt_pending_remove(cmd); 4558 goto failed; 4559 } 4560 4561 hci_discovery_set_state(hdev, DISCOVERY_STARTING); 4562 4563 failed: 4564 hci_dev_unlock(hdev); 4565 return err; 4566 } 4567 4568 static void stop_discovery_complete(struct hci_dev *hdev, u8 status, u16 opcode) 4569 { 4570 struct mgmt_pending_cmd *cmd; 4571 4572 BT_DBG("status %d", status); 4573 4574 hci_dev_lock(hdev); 4575 4576 cmd = pending_find(MGMT_OP_STOP_DISCOVERY, hdev); 4577 if (cmd) { 4578 cmd->cmd_complete(cmd, mgmt_status(status)); 4579 mgmt_pending_remove(cmd); 4580 } 4581 4582 if (!status) 4583 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 4584 4585 hci_dev_unlock(hdev); 4586 } 4587 4588 static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data, 4589 u16 len) 4590 { 4591 struct mgmt_cp_stop_discovery *mgmt_cp = data; 4592 struct mgmt_pending_cmd *cmd; 4593 struct hci_request req; 4594 int err; 4595 4596 BT_DBG("%s", hdev->name); 4597 4598 hci_dev_lock(hdev); 4599 4600 if (!hci_discovery_active(hdev)) { 4601 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY, 4602 MGMT_STATUS_REJECTED, &mgmt_cp->type, 4603 sizeof(mgmt_cp->type)); 4604 goto unlock; 4605 } 4606 4607 if (hdev->discovery.type != mgmt_cp->type) { 4608 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY, 4609 MGMT_STATUS_INVALID_PARAMS, 4610 &mgmt_cp->type, sizeof(mgmt_cp->type)); 4611 goto unlock; 4612 } 4613 4614 cmd = mgmt_pending_add(sk, MGMT_OP_STOP_DISCOVERY, hdev, data, len); 4615 if (!cmd) { 4616 err = -ENOMEM; 4617 goto unlock; 4618 } 4619 4620 cmd->cmd_complete = generic_cmd_complete; 4621 4622 hci_req_init(&req, hdev); 4623 4624 hci_stop_discovery(&req); 4625 4626 err = hci_req_run(&req, stop_discovery_complete); 4627 if (!err) { 4628 hci_discovery_set_state(hdev, DISCOVERY_STOPPING); 4629 goto unlock; 4630 } 4631 4632 mgmt_pending_remove(cmd); 4633 4634 /* If no HCI commands were sent we're done */ 4635 if (err == -ENODATA) { 4636 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY, 0, 4637 &mgmt_cp->type, sizeof(mgmt_cp->type)); 4638 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 4639 } 4640 4641 unlock: 4642 hci_dev_unlock(hdev); 4643 return err; 4644 } 4645 4646 static int confirm_name(struct sock *sk, struct hci_dev *hdev, void *data, 4647 u16 len) 4648 { 4649 struct mgmt_cp_confirm_name *cp = data; 4650 struct inquiry_entry *e; 4651 int err; 4652 4653 BT_DBG("%s", hdev->name); 4654 4655 hci_dev_lock(hdev); 4656 4657 if (!hci_discovery_active(hdev)) { 4658 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME, 4659 MGMT_STATUS_FAILED, &cp->addr, 4660 sizeof(cp->addr)); 4661 goto failed; 4662 } 4663 4664 e = hci_inquiry_cache_lookup_unknown(hdev, &cp->addr.bdaddr); 4665 if (!e) { 4666 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME, 4667 MGMT_STATUS_INVALID_PARAMS, &cp->addr, 4668 sizeof(cp->addr)); 4669 goto failed; 4670 } 4671 4672 if (cp->name_known) { 4673 e->name_state = NAME_KNOWN; 4674 list_del(&e->list); 4675 } else { 4676 e->name_state = NAME_NEEDED; 4677 hci_inquiry_cache_update_resolve(hdev, e); 4678 } 4679 4680 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME, 0, 4681 &cp->addr, sizeof(cp->addr)); 4682 4683 failed: 4684 hci_dev_unlock(hdev); 4685 return err; 4686 } 4687 4688 static int block_device(struct sock *sk, struct hci_dev *hdev, void *data, 4689 u16 len) 4690 { 4691 struct mgmt_cp_block_device *cp = data; 4692 u8 status; 4693 int err; 4694 4695 BT_DBG("%s", hdev->name); 4696 4697 if (!bdaddr_type_is_valid(cp->addr.type)) 4698 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_BLOCK_DEVICE, 4699 MGMT_STATUS_INVALID_PARAMS, 4700 &cp->addr, sizeof(cp->addr)); 4701 4702 hci_dev_lock(hdev); 4703 4704 err = hci_bdaddr_list_add(&hdev->blacklist, &cp->addr.bdaddr, 4705 cp->addr.type); 4706 if (err < 0) { 4707 status = MGMT_STATUS_FAILED; 4708 goto done; 4709 } 4710 4711 mgmt_event(MGMT_EV_DEVICE_BLOCKED, hdev, &cp->addr, sizeof(cp->addr), 4712 sk); 4713 status = MGMT_STATUS_SUCCESS; 4714 4715 done: 4716 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_BLOCK_DEVICE, status, 4717 &cp->addr, sizeof(cp->addr)); 4718 4719 hci_dev_unlock(hdev); 4720 4721 return err; 4722 } 4723 4724 static int unblock_device(struct sock *sk, struct hci_dev *hdev, void *data, 4725 u16 len) 4726 { 4727 struct mgmt_cp_unblock_device *cp = data; 4728 u8 status; 4729 int err; 4730 4731 BT_DBG("%s", hdev->name); 4732 4733 if (!bdaddr_type_is_valid(cp->addr.type)) 4734 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNBLOCK_DEVICE, 4735 MGMT_STATUS_INVALID_PARAMS, 4736 &cp->addr, sizeof(cp->addr)); 4737 4738 hci_dev_lock(hdev); 4739 4740 err = hci_bdaddr_list_del(&hdev->blacklist, &cp->addr.bdaddr, 4741 cp->addr.type); 4742 if (err < 0) { 4743 status = MGMT_STATUS_INVALID_PARAMS; 4744 goto done; 4745 } 4746 4747 mgmt_event(MGMT_EV_DEVICE_UNBLOCKED, hdev, &cp->addr, sizeof(cp->addr), 4748 sk); 4749 status = MGMT_STATUS_SUCCESS; 4750 4751 done: 4752 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNBLOCK_DEVICE, status, 4753 &cp->addr, sizeof(cp->addr)); 4754 4755 hci_dev_unlock(hdev); 4756 4757 return err; 4758 } 4759 4760 static int set_device_id(struct sock *sk, struct hci_dev *hdev, void *data, 4761 u16 len) 4762 { 4763 struct mgmt_cp_set_device_id *cp = data; 4764 struct hci_request req; 4765 int err; 4766 __u16 source; 4767 4768 BT_DBG("%s", hdev->name); 4769 4770 source = __le16_to_cpu(cp->source); 4771 4772 if (source > 0x0002) 4773 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEVICE_ID, 4774 MGMT_STATUS_INVALID_PARAMS); 4775 4776 hci_dev_lock(hdev); 4777 4778 hdev->devid_source = source; 4779 hdev->devid_vendor = __le16_to_cpu(cp->vendor); 4780 hdev->devid_product = __le16_to_cpu(cp->product); 4781 hdev->devid_version = __le16_to_cpu(cp->version); 4782 4783 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_DEVICE_ID, 0, 4784 NULL, 0); 4785 4786 hci_req_init(&req, hdev); 4787 update_eir(&req); 4788 hci_req_run(&req, NULL); 4789 4790 hci_dev_unlock(hdev); 4791 4792 return err; 4793 } 4794 4795 static void enable_advertising_instance(struct hci_dev *hdev, u8 status, 4796 u16 opcode) 4797 { 4798 BT_DBG("status %d", status); 4799 } 4800 4801 static void set_advertising_complete(struct hci_dev *hdev, u8 status, 4802 u16 opcode) 4803 { 4804 struct cmd_lookup match = { NULL, hdev }; 4805 struct hci_request req; 4806 u8 instance; 4807 struct adv_info *adv_instance; 4808 int err; 4809 4810 hci_dev_lock(hdev); 4811 4812 if (status) { 4813 u8 mgmt_err = mgmt_status(status); 4814 4815 mgmt_pending_foreach(MGMT_OP_SET_ADVERTISING, hdev, 4816 cmd_status_rsp, &mgmt_err); 4817 goto unlock; 4818 } 4819 4820 if (hci_dev_test_flag(hdev, HCI_LE_ADV)) 4821 hci_dev_set_flag(hdev, HCI_ADVERTISING); 4822 else 4823 hci_dev_clear_flag(hdev, HCI_ADVERTISING); 4824 4825 mgmt_pending_foreach(MGMT_OP_SET_ADVERTISING, hdev, settings_rsp, 4826 &match); 4827 4828 new_settings(hdev, match.sk); 4829 4830 if (match.sk) 4831 sock_put(match.sk); 4832 4833 /* If "Set Advertising" was just disabled and instance advertising was 4834 * set up earlier, then re-enable multi-instance advertising. 4835 */ 4836 if (hci_dev_test_flag(hdev, HCI_ADVERTISING) || 4837 !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) || 4838 list_empty(&hdev->adv_instances)) 4839 goto unlock; 4840 4841 instance = hdev->cur_adv_instance; 4842 if (!instance) { 4843 adv_instance = list_first_entry_or_null(&hdev->adv_instances, 4844 struct adv_info, list); 4845 if (!adv_instance) 4846 goto unlock; 4847 4848 instance = adv_instance->instance; 4849 } 4850 4851 hci_req_init(&req, hdev); 4852 4853 err = schedule_adv_instance(&req, instance, true); 4854 4855 if (!err) 4856 err = hci_req_run(&req, enable_advertising_instance); 4857 4858 if (err) 4859 BT_ERR("Failed to re-configure advertising"); 4860 4861 unlock: 4862 hci_dev_unlock(hdev); 4863 } 4864 4865 static int set_advertising(struct sock *sk, struct hci_dev *hdev, void *data, 4866 u16 len) 4867 { 4868 struct mgmt_mode *cp = data; 4869 struct mgmt_pending_cmd *cmd; 4870 struct hci_request req; 4871 u8 val, status; 4872 int err; 4873 4874 BT_DBG("request for %s", hdev->name); 4875 4876 status = mgmt_le_support(hdev); 4877 if (status) 4878 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING, 4879 status); 4880 4881 if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02) 4882 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING, 4883 MGMT_STATUS_INVALID_PARAMS); 4884 4885 hci_dev_lock(hdev); 4886 4887 val = !!cp->val; 4888 4889 /* The following conditions are ones which mean that we should 4890 * not do any HCI communication but directly send a mgmt 4891 * response to user space (after toggling the flag if 4892 * necessary). 4893 */ 4894 if (!hdev_is_powered(hdev) || 4895 (val == hci_dev_test_flag(hdev, HCI_ADVERTISING) && 4896 (cp->val == 0x02) == hci_dev_test_flag(hdev, HCI_ADVERTISING_CONNECTABLE)) || 4897 hci_conn_num(hdev, LE_LINK) > 0 || 4898 (hci_dev_test_flag(hdev, HCI_LE_SCAN) && 4899 hdev->le_scan_type == LE_SCAN_ACTIVE)) { 4900 bool changed; 4901 4902 if (cp->val) { 4903 changed = !hci_dev_test_and_set_flag(hdev, HCI_ADVERTISING); 4904 if (cp->val == 0x02) 4905 hci_dev_set_flag(hdev, HCI_ADVERTISING_CONNECTABLE); 4906 else 4907 hci_dev_clear_flag(hdev, HCI_ADVERTISING_CONNECTABLE); 4908 } else { 4909 changed = hci_dev_test_and_clear_flag(hdev, HCI_ADVERTISING); 4910 hci_dev_clear_flag(hdev, HCI_ADVERTISING_CONNECTABLE); 4911 } 4912 4913 err = send_settings_rsp(sk, MGMT_OP_SET_ADVERTISING, hdev); 4914 if (err < 0) 4915 goto unlock; 4916 4917 if (changed) 4918 err = new_settings(hdev, sk); 4919 4920 goto unlock; 4921 } 4922 4923 if (pending_find(MGMT_OP_SET_ADVERTISING, hdev) || 4924 pending_find(MGMT_OP_SET_LE, hdev)) { 4925 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING, 4926 MGMT_STATUS_BUSY); 4927 goto unlock; 4928 } 4929 4930 cmd = mgmt_pending_add(sk, MGMT_OP_SET_ADVERTISING, hdev, data, len); 4931 if (!cmd) { 4932 err = -ENOMEM; 4933 goto unlock; 4934 } 4935 4936 hci_req_init(&req, hdev); 4937 4938 if (cp->val == 0x02) 4939 hci_dev_set_flag(hdev, HCI_ADVERTISING_CONNECTABLE); 4940 else 4941 hci_dev_clear_flag(hdev, HCI_ADVERTISING_CONNECTABLE); 4942 4943 cancel_adv_timeout(hdev); 4944 4945 if (val) { 4946 /* Switch to instance "0" for the Set Advertising setting. 4947 * We cannot use update_[adv|scan_rsp]_data() here as the 4948 * HCI_ADVERTISING flag is not yet set. 4949 */ 4950 update_inst_adv_data(&req, 0x00); 4951 update_inst_scan_rsp_data(&req, 0x00); 4952 enable_advertising(&req); 4953 } else { 4954 disable_advertising(&req); 4955 } 4956 4957 err = hci_req_run(&req, set_advertising_complete); 4958 if (err < 0) 4959 mgmt_pending_remove(cmd); 4960 4961 unlock: 4962 hci_dev_unlock(hdev); 4963 return err; 4964 } 4965 4966 static int set_static_address(struct sock *sk, struct hci_dev *hdev, 4967 void *data, u16 len) 4968 { 4969 struct mgmt_cp_set_static_address *cp = data; 4970 int err; 4971 4972 BT_DBG("%s", hdev->name); 4973 4974 if (!lmp_le_capable(hdev)) 4975 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_STATIC_ADDRESS, 4976 MGMT_STATUS_NOT_SUPPORTED); 4977 4978 if (hdev_is_powered(hdev)) 4979 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_STATIC_ADDRESS, 4980 MGMT_STATUS_REJECTED); 4981 4982 if (bacmp(&cp->bdaddr, BDADDR_ANY)) { 4983 if (!bacmp(&cp->bdaddr, BDADDR_NONE)) 4984 return mgmt_cmd_status(sk, hdev->id, 4985 MGMT_OP_SET_STATIC_ADDRESS, 4986 MGMT_STATUS_INVALID_PARAMS); 4987 4988 /* Two most significant bits shall be set */ 4989 if ((cp->bdaddr.b[5] & 0xc0) != 0xc0) 4990 return mgmt_cmd_status(sk, hdev->id, 4991 MGMT_OP_SET_STATIC_ADDRESS, 4992 MGMT_STATUS_INVALID_PARAMS); 4993 } 4994 4995 hci_dev_lock(hdev); 4996 4997 bacpy(&hdev->static_addr, &cp->bdaddr); 4998 4999 err = send_settings_rsp(sk, MGMT_OP_SET_STATIC_ADDRESS, hdev); 5000 if (err < 0) 5001 goto unlock; 5002 5003 err = new_settings(hdev, sk); 5004 5005 unlock: 5006 hci_dev_unlock(hdev); 5007 return err; 5008 } 5009 5010 static int set_scan_params(struct sock *sk, struct hci_dev *hdev, 5011 void *data, u16 len) 5012 { 5013 struct mgmt_cp_set_scan_params *cp = data; 5014 __u16 interval, window; 5015 int err; 5016 5017 BT_DBG("%s", hdev->name); 5018 5019 if (!lmp_le_capable(hdev)) 5020 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, 5021 MGMT_STATUS_NOT_SUPPORTED); 5022 5023 interval = __le16_to_cpu(cp->interval); 5024 5025 if (interval < 0x0004 || interval > 0x4000) 5026 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, 5027 MGMT_STATUS_INVALID_PARAMS); 5028 5029 window = __le16_to_cpu(cp->window); 5030 5031 if (window < 0x0004 || window > 0x4000) 5032 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, 5033 MGMT_STATUS_INVALID_PARAMS); 5034 5035 if (window > interval) 5036 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, 5037 MGMT_STATUS_INVALID_PARAMS); 5038 5039 hci_dev_lock(hdev); 5040 5041 hdev->le_scan_interval = interval; 5042 hdev->le_scan_window = window; 5043 5044 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, 0, 5045 NULL, 0); 5046 5047 /* If background scan is running, restart it so new parameters are 5048 * loaded. 5049 */ 5050 if (hci_dev_test_flag(hdev, HCI_LE_SCAN) && 5051 hdev->discovery.state == DISCOVERY_STOPPED) { 5052 struct hci_request req; 5053 5054 hci_req_init(&req, hdev); 5055 5056 hci_req_add_le_scan_disable(&req); 5057 hci_req_add_le_passive_scan(&req); 5058 5059 hci_req_run(&req, NULL); 5060 } 5061 5062 hci_dev_unlock(hdev); 5063 5064 return err; 5065 } 5066 5067 static void fast_connectable_complete(struct hci_dev *hdev, u8 status, 5068 u16 opcode) 5069 { 5070 struct mgmt_pending_cmd *cmd; 5071 5072 BT_DBG("status 0x%02x", status); 5073 5074 hci_dev_lock(hdev); 5075 5076 cmd = pending_find(MGMT_OP_SET_FAST_CONNECTABLE, hdev); 5077 if (!cmd) 5078 goto unlock; 5079 5080 if (status) { 5081 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE, 5082 mgmt_status(status)); 5083 } else { 5084 struct mgmt_mode *cp = cmd->param; 5085 5086 if (cp->val) 5087 hci_dev_set_flag(hdev, HCI_FAST_CONNECTABLE); 5088 else 5089 hci_dev_clear_flag(hdev, HCI_FAST_CONNECTABLE); 5090 5091 send_settings_rsp(cmd->sk, MGMT_OP_SET_FAST_CONNECTABLE, hdev); 5092 new_settings(hdev, cmd->sk); 5093 } 5094 5095 mgmt_pending_remove(cmd); 5096 5097 unlock: 5098 hci_dev_unlock(hdev); 5099 } 5100 5101 static int set_fast_connectable(struct sock *sk, struct hci_dev *hdev, 5102 void *data, u16 len) 5103 { 5104 struct mgmt_mode *cp = data; 5105 struct mgmt_pending_cmd *cmd; 5106 struct hci_request req; 5107 int err; 5108 5109 BT_DBG("%s", hdev->name); 5110 5111 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) || 5112 hdev->hci_ver < BLUETOOTH_VER_1_2) 5113 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE, 5114 MGMT_STATUS_NOT_SUPPORTED); 5115 5116 if (cp->val != 0x00 && cp->val != 0x01) 5117 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE, 5118 MGMT_STATUS_INVALID_PARAMS); 5119 5120 hci_dev_lock(hdev); 5121 5122 if (pending_find(MGMT_OP_SET_FAST_CONNECTABLE, hdev)) { 5123 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE, 5124 MGMT_STATUS_BUSY); 5125 goto unlock; 5126 } 5127 5128 if (!!cp->val == hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE)) { 5129 err = send_settings_rsp(sk, MGMT_OP_SET_FAST_CONNECTABLE, 5130 hdev); 5131 goto unlock; 5132 } 5133 5134 if (!hdev_is_powered(hdev)) { 5135 hci_dev_change_flag(hdev, HCI_FAST_CONNECTABLE); 5136 err = send_settings_rsp(sk, MGMT_OP_SET_FAST_CONNECTABLE, 5137 hdev); 5138 new_settings(hdev, sk); 5139 goto unlock; 5140 } 5141 5142 cmd = mgmt_pending_add(sk, MGMT_OP_SET_FAST_CONNECTABLE, hdev, 5143 data, len); 5144 if (!cmd) { 5145 err = -ENOMEM; 5146 goto unlock; 5147 } 5148 5149 hci_req_init(&req, hdev); 5150 5151 write_fast_connectable(&req, cp->val); 5152 5153 err = hci_req_run(&req, fast_connectable_complete); 5154 if (err < 0) { 5155 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE, 5156 MGMT_STATUS_FAILED); 5157 mgmt_pending_remove(cmd); 5158 } 5159 5160 unlock: 5161 hci_dev_unlock(hdev); 5162 5163 return err; 5164 } 5165 5166 static void set_bredr_complete(struct hci_dev *hdev, u8 status, u16 opcode) 5167 { 5168 struct mgmt_pending_cmd *cmd; 5169 5170 BT_DBG("status 0x%02x", status); 5171 5172 hci_dev_lock(hdev); 5173 5174 cmd = pending_find(MGMT_OP_SET_BREDR, hdev); 5175 if (!cmd) 5176 goto unlock; 5177 5178 if (status) { 5179 u8 mgmt_err = mgmt_status(status); 5180 5181 /* We need to restore the flag if related HCI commands 5182 * failed. 5183 */ 5184 hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED); 5185 5186 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, mgmt_err); 5187 } else { 5188 send_settings_rsp(cmd->sk, MGMT_OP_SET_BREDR, hdev); 5189 new_settings(hdev, cmd->sk); 5190 } 5191 5192 mgmt_pending_remove(cmd); 5193 5194 unlock: 5195 hci_dev_unlock(hdev); 5196 } 5197 5198 static int set_bredr(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) 5199 { 5200 struct mgmt_mode *cp = data; 5201 struct mgmt_pending_cmd *cmd; 5202 struct hci_request req; 5203 int err; 5204 5205 BT_DBG("request for %s", hdev->name); 5206 5207 if (!lmp_bredr_capable(hdev) || !lmp_le_capable(hdev)) 5208 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR, 5209 MGMT_STATUS_NOT_SUPPORTED); 5210 5211 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED)) 5212 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR, 5213 MGMT_STATUS_REJECTED); 5214 5215 if (cp->val != 0x00 && cp->val != 0x01) 5216 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR, 5217 MGMT_STATUS_INVALID_PARAMS); 5218 5219 hci_dev_lock(hdev); 5220 5221 if (cp->val == hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { 5222 err = send_settings_rsp(sk, MGMT_OP_SET_BREDR, hdev); 5223 goto unlock; 5224 } 5225 5226 if (!hdev_is_powered(hdev)) { 5227 if (!cp->val) { 5228 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); 5229 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED); 5230 hci_dev_clear_flag(hdev, HCI_LINK_SECURITY); 5231 hci_dev_clear_flag(hdev, HCI_FAST_CONNECTABLE); 5232 hci_dev_clear_flag(hdev, HCI_HS_ENABLED); 5233 } 5234 5235 hci_dev_change_flag(hdev, HCI_BREDR_ENABLED); 5236 5237 err = send_settings_rsp(sk, MGMT_OP_SET_BREDR, hdev); 5238 if (err < 0) 5239 goto unlock; 5240 5241 err = new_settings(hdev, sk); 5242 goto unlock; 5243 } 5244 5245 /* Reject disabling when powered on */ 5246 if (!cp->val) { 5247 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR, 5248 MGMT_STATUS_REJECTED); 5249 goto unlock; 5250 } else { 5251 /* When configuring a dual-mode controller to operate 5252 * with LE only and using a static address, then switching 5253 * BR/EDR back on is not allowed. 5254 * 5255 * Dual-mode controllers shall operate with the public 5256 * address as its identity address for BR/EDR and LE. So 5257 * reject the attempt to create an invalid configuration. 5258 * 5259 * The same restrictions applies when secure connections 5260 * has been enabled. For BR/EDR this is a controller feature 5261 * while for LE it is a host stack feature. This means that 5262 * switching BR/EDR back on when secure connections has been 5263 * enabled is not a supported transaction. 5264 */ 5265 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && 5266 (bacmp(&hdev->static_addr, BDADDR_ANY) || 5267 hci_dev_test_flag(hdev, HCI_SC_ENABLED))) { 5268 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR, 5269 MGMT_STATUS_REJECTED); 5270 goto unlock; 5271 } 5272 } 5273 5274 if (pending_find(MGMT_OP_SET_BREDR, hdev)) { 5275 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR, 5276 MGMT_STATUS_BUSY); 5277 goto unlock; 5278 } 5279 5280 cmd = mgmt_pending_add(sk, MGMT_OP_SET_BREDR, hdev, data, len); 5281 if (!cmd) { 5282 err = -ENOMEM; 5283 goto unlock; 5284 } 5285 5286 /* We need to flip the bit already here so that update_adv_data 5287 * generates the correct flags. 5288 */ 5289 hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); 5290 5291 hci_req_init(&req, hdev); 5292 5293 write_fast_connectable(&req, false); 5294 __hci_update_page_scan(&req); 5295 5296 /* Since only the advertising data flags will change, there 5297 * is no need to update the scan response data. 5298 */ 5299 update_adv_data(&req); 5300 5301 err = hci_req_run(&req, set_bredr_complete); 5302 if (err < 0) 5303 mgmt_pending_remove(cmd); 5304 5305 unlock: 5306 hci_dev_unlock(hdev); 5307 return err; 5308 } 5309 5310 static void sc_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode) 5311 { 5312 struct mgmt_pending_cmd *cmd; 5313 struct mgmt_mode *cp; 5314 5315 BT_DBG("%s status %u", hdev->name, status); 5316 5317 hci_dev_lock(hdev); 5318 5319 cmd = pending_find(MGMT_OP_SET_SECURE_CONN, hdev); 5320 if (!cmd) 5321 goto unlock; 5322 5323 if (status) { 5324 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, 5325 mgmt_status(status)); 5326 goto remove; 5327 } 5328 5329 cp = cmd->param; 5330 5331 switch (cp->val) { 5332 case 0x00: 5333 hci_dev_clear_flag(hdev, HCI_SC_ENABLED); 5334 hci_dev_clear_flag(hdev, HCI_SC_ONLY); 5335 break; 5336 case 0x01: 5337 hci_dev_set_flag(hdev, HCI_SC_ENABLED); 5338 hci_dev_clear_flag(hdev, HCI_SC_ONLY); 5339 break; 5340 case 0x02: 5341 hci_dev_set_flag(hdev, HCI_SC_ENABLED); 5342 hci_dev_set_flag(hdev, HCI_SC_ONLY); 5343 break; 5344 } 5345 5346 send_settings_rsp(cmd->sk, MGMT_OP_SET_SECURE_CONN, hdev); 5347 new_settings(hdev, cmd->sk); 5348 5349 remove: 5350 mgmt_pending_remove(cmd); 5351 unlock: 5352 hci_dev_unlock(hdev); 5353 } 5354 5355 static int set_secure_conn(struct sock *sk, struct hci_dev *hdev, 5356 void *data, u16 len) 5357 { 5358 struct mgmt_mode *cp = data; 5359 struct mgmt_pending_cmd *cmd; 5360 struct hci_request req; 5361 u8 val; 5362 int err; 5363 5364 BT_DBG("request for %s", hdev->name); 5365 5366 if (!lmp_sc_capable(hdev) && 5367 !hci_dev_test_flag(hdev, HCI_LE_ENABLED)) 5368 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN, 5369 MGMT_STATUS_NOT_SUPPORTED); 5370 5371 if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && 5372 lmp_sc_capable(hdev) && 5373 !hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) 5374 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN, 5375 MGMT_STATUS_REJECTED); 5376 5377 if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02) 5378 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN, 5379 MGMT_STATUS_INVALID_PARAMS); 5380 5381 hci_dev_lock(hdev); 5382 5383 if (!hdev_is_powered(hdev) || !lmp_sc_capable(hdev) || 5384 !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { 5385 bool changed; 5386 5387 if (cp->val) { 5388 changed = !hci_dev_test_and_set_flag(hdev, 5389 HCI_SC_ENABLED); 5390 if (cp->val == 0x02) 5391 hci_dev_set_flag(hdev, HCI_SC_ONLY); 5392 else 5393 hci_dev_clear_flag(hdev, HCI_SC_ONLY); 5394 } else { 5395 changed = hci_dev_test_and_clear_flag(hdev, 5396 HCI_SC_ENABLED); 5397 hci_dev_clear_flag(hdev, HCI_SC_ONLY); 5398 } 5399 5400 err = send_settings_rsp(sk, MGMT_OP_SET_SECURE_CONN, hdev); 5401 if (err < 0) 5402 goto failed; 5403 5404 if (changed) 5405 err = new_settings(hdev, sk); 5406 5407 goto failed; 5408 } 5409 5410 if (pending_find(MGMT_OP_SET_SECURE_CONN, hdev)) { 5411 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN, 5412 MGMT_STATUS_BUSY); 5413 goto failed; 5414 } 5415 5416 val = !!cp->val; 5417 5418 if (val == hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 5419 (cp->val == 0x02) == hci_dev_test_flag(hdev, HCI_SC_ONLY)) { 5420 err = send_settings_rsp(sk, MGMT_OP_SET_SECURE_CONN, hdev); 5421 goto failed; 5422 } 5423 5424 cmd = mgmt_pending_add(sk, MGMT_OP_SET_SECURE_CONN, hdev, data, len); 5425 if (!cmd) { 5426 err = -ENOMEM; 5427 goto failed; 5428 } 5429 5430 hci_req_init(&req, hdev); 5431 hci_req_add(&req, HCI_OP_WRITE_SC_SUPPORT, 1, &val); 5432 err = hci_req_run(&req, sc_enable_complete); 5433 if (err < 0) { 5434 mgmt_pending_remove(cmd); 5435 goto failed; 5436 } 5437 5438 failed: 5439 hci_dev_unlock(hdev); 5440 return err; 5441 } 5442 5443 static int set_debug_keys(struct sock *sk, struct hci_dev *hdev, 5444 void *data, u16 len) 5445 { 5446 struct mgmt_mode *cp = data; 5447 bool changed, use_changed; 5448 int err; 5449 5450 BT_DBG("request for %s", hdev->name); 5451 5452 if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02) 5453 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEBUG_KEYS, 5454 MGMT_STATUS_INVALID_PARAMS); 5455 5456 hci_dev_lock(hdev); 5457 5458 if (cp->val) 5459 changed = !hci_dev_test_and_set_flag(hdev, HCI_KEEP_DEBUG_KEYS); 5460 else 5461 changed = hci_dev_test_and_clear_flag(hdev, 5462 HCI_KEEP_DEBUG_KEYS); 5463 5464 if (cp->val == 0x02) 5465 use_changed = !hci_dev_test_and_set_flag(hdev, 5466 HCI_USE_DEBUG_KEYS); 5467 else 5468 use_changed = hci_dev_test_and_clear_flag(hdev, 5469 HCI_USE_DEBUG_KEYS); 5470 5471 if (hdev_is_powered(hdev) && use_changed && 5472 hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { 5473 u8 mode = (cp->val == 0x02) ? 0x01 : 0x00; 5474 hci_send_cmd(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE, 5475 sizeof(mode), &mode); 5476 } 5477 5478 err = send_settings_rsp(sk, MGMT_OP_SET_DEBUG_KEYS, hdev); 5479 if (err < 0) 5480 goto unlock; 5481 5482 if (changed) 5483 err = new_settings(hdev, sk); 5484 5485 unlock: 5486 hci_dev_unlock(hdev); 5487 return err; 5488 } 5489 5490 static int set_privacy(struct sock *sk, struct hci_dev *hdev, void *cp_data, 5491 u16 len) 5492 { 5493 struct mgmt_cp_set_privacy *cp = cp_data; 5494 bool changed; 5495 int err; 5496 5497 BT_DBG("request for %s", hdev->name); 5498 5499 if (!lmp_le_capable(hdev)) 5500 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY, 5501 MGMT_STATUS_NOT_SUPPORTED); 5502 5503 if (cp->privacy != 0x00 && cp->privacy != 0x01) 5504 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY, 5505 MGMT_STATUS_INVALID_PARAMS); 5506 5507 if (hdev_is_powered(hdev)) 5508 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY, 5509 MGMT_STATUS_REJECTED); 5510 5511 hci_dev_lock(hdev); 5512 5513 /* If user space supports this command it is also expected to 5514 * handle IRKs. Therefore, set the HCI_RPA_RESOLVING flag. 5515 */ 5516 hci_dev_set_flag(hdev, HCI_RPA_RESOLVING); 5517 5518 if (cp->privacy) { 5519 changed = !hci_dev_test_and_set_flag(hdev, HCI_PRIVACY); 5520 memcpy(hdev->irk, cp->irk, sizeof(hdev->irk)); 5521 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); 5522 } else { 5523 changed = hci_dev_test_and_clear_flag(hdev, HCI_PRIVACY); 5524 memset(hdev->irk, 0, sizeof(hdev->irk)); 5525 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED); 5526 } 5527 5528 err = send_settings_rsp(sk, MGMT_OP_SET_PRIVACY, hdev); 5529 if (err < 0) 5530 goto unlock; 5531 5532 if (changed) 5533 err = new_settings(hdev, sk); 5534 5535 unlock: 5536 hci_dev_unlock(hdev); 5537 return err; 5538 } 5539 5540 static bool irk_is_valid(struct mgmt_irk_info *irk) 5541 { 5542 switch (irk->addr.type) { 5543 case BDADDR_LE_PUBLIC: 5544 return true; 5545 5546 case BDADDR_LE_RANDOM: 5547 /* Two most significant bits shall be set */ 5548 if ((irk->addr.bdaddr.b[5] & 0xc0) != 0xc0) 5549 return false; 5550 return true; 5551 } 5552 5553 return false; 5554 } 5555 5556 static int load_irks(struct sock *sk, struct hci_dev *hdev, void *cp_data, 5557 u16 len) 5558 { 5559 struct mgmt_cp_load_irks *cp = cp_data; 5560 const u16 max_irk_count = ((U16_MAX - sizeof(*cp)) / 5561 sizeof(struct mgmt_irk_info)); 5562 u16 irk_count, expected_len; 5563 int i, err; 5564 5565 BT_DBG("request for %s", hdev->name); 5566 5567 if (!lmp_le_capable(hdev)) 5568 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS, 5569 MGMT_STATUS_NOT_SUPPORTED); 5570 5571 irk_count = __le16_to_cpu(cp->irk_count); 5572 if (irk_count > max_irk_count) { 5573 BT_ERR("load_irks: too big irk_count value %u", irk_count); 5574 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS, 5575 MGMT_STATUS_INVALID_PARAMS); 5576 } 5577 5578 expected_len = sizeof(*cp) + irk_count * sizeof(struct mgmt_irk_info); 5579 if (expected_len != len) { 5580 BT_ERR("load_irks: expected %u bytes, got %u bytes", 5581 expected_len, len); 5582 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS, 5583 MGMT_STATUS_INVALID_PARAMS); 5584 } 5585 5586 BT_DBG("%s irk_count %u", hdev->name, irk_count); 5587 5588 for (i = 0; i < irk_count; i++) { 5589 struct mgmt_irk_info *key = &cp->irks[i]; 5590 5591 if (!irk_is_valid(key)) 5592 return mgmt_cmd_status(sk, hdev->id, 5593 MGMT_OP_LOAD_IRKS, 5594 MGMT_STATUS_INVALID_PARAMS); 5595 } 5596 5597 hci_dev_lock(hdev); 5598 5599 hci_smp_irks_clear(hdev); 5600 5601 for (i = 0; i < irk_count; i++) { 5602 struct mgmt_irk_info *irk = &cp->irks[i]; 5603 u8 addr_type; 5604 5605 if (irk->addr.type == BDADDR_LE_PUBLIC) 5606 addr_type = ADDR_LE_DEV_PUBLIC; 5607 else 5608 addr_type = ADDR_LE_DEV_RANDOM; 5609 5610 hci_add_irk(hdev, &irk->addr.bdaddr, addr_type, irk->val, 5611 BDADDR_ANY); 5612 } 5613 5614 hci_dev_set_flag(hdev, HCI_RPA_RESOLVING); 5615 5616 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_IRKS, 0, NULL, 0); 5617 5618 hci_dev_unlock(hdev); 5619 5620 return err; 5621 } 5622 5623 static bool ltk_is_valid(struct mgmt_ltk_info *key) 5624 { 5625 if (key->master != 0x00 && key->master != 0x01) 5626 return false; 5627 5628 switch (key->addr.type) { 5629 case BDADDR_LE_PUBLIC: 5630 return true; 5631 5632 case BDADDR_LE_RANDOM: 5633 /* Two most significant bits shall be set */ 5634 if ((key->addr.bdaddr.b[5] & 0xc0) != 0xc0) 5635 return false; 5636 return true; 5637 } 5638 5639 return false; 5640 } 5641 5642 static int load_long_term_keys(struct sock *sk, struct hci_dev *hdev, 5643 void *cp_data, u16 len) 5644 { 5645 struct mgmt_cp_load_long_term_keys *cp = cp_data; 5646 const u16 max_key_count = ((U16_MAX - sizeof(*cp)) / 5647 sizeof(struct mgmt_ltk_info)); 5648 u16 key_count, expected_len; 5649 int i, err; 5650 5651 BT_DBG("request for %s", hdev->name); 5652 5653 if (!lmp_le_capable(hdev)) 5654 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS, 5655 MGMT_STATUS_NOT_SUPPORTED); 5656 5657 key_count = __le16_to_cpu(cp->key_count); 5658 if (key_count > max_key_count) { 5659 BT_ERR("load_ltks: too big key_count value %u", key_count); 5660 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS, 5661 MGMT_STATUS_INVALID_PARAMS); 5662 } 5663 5664 expected_len = sizeof(*cp) + key_count * 5665 sizeof(struct mgmt_ltk_info); 5666 if (expected_len != len) { 5667 BT_ERR("load_keys: expected %u bytes, got %u bytes", 5668 expected_len, len); 5669 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS, 5670 MGMT_STATUS_INVALID_PARAMS); 5671 } 5672 5673 BT_DBG("%s key_count %u", hdev->name, key_count); 5674 5675 for (i = 0; i < key_count; i++) { 5676 struct mgmt_ltk_info *key = &cp->keys[i]; 5677 5678 if (!ltk_is_valid(key)) 5679 return mgmt_cmd_status(sk, hdev->id, 5680 MGMT_OP_LOAD_LONG_TERM_KEYS, 5681 MGMT_STATUS_INVALID_PARAMS); 5682 } 5683 5684 hci_dev_lock(hdev); 5685 5686 hci_smp_ltks_clear(hdev); 5687 5688 for (i = 0; i < key_count; i++) { 5689 struct mgmt_ltk_info *key = &cp->keys[i]; 5690 u8 type, addr_type, authenticated; 5691 5692 if (key->addr.type == BDADDR_LE_PUBLIC) 5693 addr_type = ADDR_LE_DEV_PUBLIC; 5694 else 5695 addr_type = ADDR_LE_DEV_RANDOM; 5696 5697 switch (key->type) { 5698 case MGMT_LTK_UNAUTHENTICATED: 5699 authenticated = 0x00; 5700 type = key->master ? SMP_LTK : SMP_LTK_SLAVE; 5701 break; 5702 case MGMT_LTK_AUTHENTICATED: 5703 authenticated = 0x01; 5704 type = key->master ? SMP_LTK : SMP_LTK_SLAVE; 5705 break; 5706 case MGMT_LTK_P256_UNAUTH: 5707 authenticated = 0x00; 5708 type = SMP_LTK_P256; 5709 break; 5710 case MGMT_LTK_P256_AUTH: 5711 authenticated = 0x01; 5712 type = SMP_LTK_P256; 5713 break; 5714 case MGMT_LTK_P256_DEBUG: 5715 authenticated = 0x00; 5716 type = SMP_LTK_P256_DEBUG; 5717 default: 5718 continue; 5719 } 5720 5721 hci_add_ltk(hdev, &key->addr.bdaddr, addr_type, type, 5722 authenticated, key->val, key->enc_size, key->ediv, 5723 key->rand); 5724 } 5725 5726 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS, 0, 5727 NULL, 0); 5728 5729 hci_dev_unlock(hdev); 5730 5731 return err; 5732 } 5733 5734 static int conn_info_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status) 5735 { 5736 struct hci_conn *conn = cmd->user_data; 5737 struct mgmt_rp_get_conn_info rp; 5738 int err; 5739 5740 memcpy(&rp.addr, cmd->param, sizeof(rp.addr)); 5741 5742 if (status == MGMT_STATUS_SUCCESS) { 5743 rp.rssi = conn->rssi; 5744 rp.tx_power = conn->tx_power; 5745 rp.max_tx_power = conn->max_tx_power; 5746 } else { 5747 rp.rssi = HCI_RSSI_INVALID; 5748 rp.tx_power = HCI_TX_POWER_INVALID; 5749 rp.max_tx_power = HCI_TX_POWER_INVALID; 5750 } 5751 5752 err = mgmt_cmd_complete(cmd->sk, cmd->index, MGMT_OP_GET_CONN_INFO, 5753 status, &rp, sizeof(rp)); 5754 5755 hci_conn_drop(conn); 5756 hci_conn_put(conn); 5757 5758 return err; 5759 } 5760 5761 static void conn_info_refresh_complete(struct hci_dev *hdev, u8 hci_status, 5762 u16 opcode) 5763 { 5764 struct hci_cp_read_rssi *cp; 5765 struct mgmt_pending_cmd *cmd; 5766 struct hci_conn *conn; 5767 u16 handle; 5768 u8 status; 5769 5770 BT_DBG("status 0x%02x", hci_status); 5771 5772 hci_dev_lock(hdev); 5773 5774 /* Commands sent in request are either Read RSSI or Read Transmit Power 5775 * Level so we check which one was last sent to retrieve connection 5776 * handle. Both commands have handle as first parameter so it's safe to 5777 * cast data on the same command struct. 5778 * 5779 * First command sent is always Read RSSI and we fail only if it fails. 5780 * In other case we simply override error to indicate success as we 5781 * already remembered if TX power value is actually valid. 5782 */ 5783 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_RSSI); 5784 if (!cp) { 5785 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER); 5786 status = MGMT_STATUS_SUCCESS; 5787 } else { 5788 status = mgmt_status(hci_status); 5789 } 5790 5791 if (!cp) { 5792 BT_ERR("invalid sent_cmd in conn_info response"); 5793 goto unlock; 5794 } 5795 5796 handle = __le16_to_cpu(cp->handle); 5797 conn = hci_conn_hash_lookup_handle(hdev, handle); 5798 if (!conn) { 5799 BT_ERR("unknown handle (%d) in conn_info response", handle); 5800 goto unlock; 5801 } 5802 5803 cmd = pending_find_data(MGMT_OP_GET_CONN_INFO, hdev, conn); 5804 if (!cmd) 5805 goto unlock; 5806 5807 cmd->cmd_complete(cmd, status); 5808 mgmt_pending_remove(cmd); 5809 5810 unlock: 5811 hci_dev_unlock(hdev); 5812 } 5813 5814 static int get_conn_info(struct sock *sk, struct hci_dev *hdev, void *data, 5815 u16 len) 5816 { 5817 struct mgmt_cp_get_conn_info *cp = data; 5818 struct mgmt_rp_get_conn_info rp; 5819 struct hci_conn *conn; 5820 unsigned long conn_info_age; 5821 int err = 0; 5822 5823 BT_DBG("%s", hdev->name); 5824 5825 memset(&rp, 0, sizeof(rp)); 5826 bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr); 5827 rp.addr.type = cp->addr.type; 5828 5829 if (!bdaddr_type_is_valid(cp->addr.type)) 5830 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO, 5831 MGMT_STATUS_INVALID_PARAMS, 5832 &rp, sizeof(rp)); 5833 5834 hci_dev_lock(hdev); 5835 5836 if (!hdev_is_powered(hdev)) { 5837 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO, 5838 MGMT_STATUS_NOT_POWERED, &rp, 5839 sizeof(rp)); 5840 goto unlock; 5841 } 5842 5843 if (cp->addr.type == BDADDR_BREDR) 5844 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, 5845 &cp->addr.bdaddr); 5846 else 5847 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &cp->addr.bdaddr); 5848 5849 if (!conn || conn->state != BT_CONNECTED) { 5850 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO, 5851 MGMT_STATUS_NOT_CONNECTED, &rp, 5852 sizeof(rp)); 5853 goto unlock; 5854 } 5855 5856 if (pending_find_data(MGMT_OP_GET_CONN_INFO, hdev, conn)) { 5857 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO, 5858 MGMT_STATUS_BUSY, &rp, sizeof(rp)); 5859 goto unlock; 5860 } 5861 5862 /* To avoid client trying to guess when to poll again for information we 5863 * calculate conn info age as random value between min/max set in hdev. 5864 */ 5865 conn_info_age = hdev->conn_info_min_age + 5866 prandom_u32_max(hdev->conn_info_max_age - 5867 hdev->conn_info_min_age); 5868 5869 /* Query controller to refresh cached values if they are too old or were 5870 * never read. 5871 */ 5872 if (time_after(jiffies, conn->conn_info_timestamp + 5873 msecs_to_jiffies(conn_info_age)) || 5874 !conn->conn_info_timestamp) { 5875 struct hci_request req; 5876 struct hci_cp_read_tx_power req_txp_cp; 5877 struct hci_cp_read_rssi req_rssi_cp; 5878 struct mgmt_pending_cmd *cmd; 5879 5880 hci_req_init(&req, hdev); 5881 req_rssi_cp.handle = cpu_to_le16(conn->handle); 5882 hci_req_add(&req, HCI_OP_READ_RSSI, sizeof(req_rssi_cp), 5883 &req_rssi_cp); 5884 5885 /* For LE links TX power does not change thus we don't need to 5886 * query for it once value is known. 5887 */ 5888 if (!bdaddr_type_is_le(cp->addr.type) || 5889 conn->tx_power == HCI_TX_POWER_INVALID) { 5890 req_txp_cp.handle = cpu_to_le16(conn->handle); 5891 req_txp_cp.type = 0x00; 5892 hci_req_add(&req, HCI_OP_READ_TX_POWER, 5893 sizeof(req_txp_cp), &req_txp_cp); 5894 } 5895 5896 /* Max TX power needs to be read only once per connection */ 5897 if (conn->max_tx_power == HCI_TX_POWER_INVALID) { 5898 req_txp_cp.handle = cpu_to_le16(conn->handle); 5899 req_txp_cp.type = 0x01; 5900 hci_req_add(&req, HCI_OP_READ_TX_POWER, 5901 sizeof(req_txp_cp), &req_txp_cp); 5902 } 5903 5904 err = hci_req_run(&req, conn_info_refresh_complete); 5905 if (err < 0) 5906 goto unlock; 5907 5908 cmd = mgmt_pending_add(sk, MGMT_OP_GET_CONN_INFO, hdev, 5909 data, len); 5910 if (!cmd) { 5911 err = -ENOMEM; 5912 goto unlock; 5913 } 5914 5915 hci_conn_hold(conn); 5916 cmd->user_data = hci_conn_get(conn); 5917 cmd->cmd_complete = conn_info_cmd_complete; 5918 5919 conn->conn_info_timestamp = jiffies; 5920 } else { 5921 /* Cache is valid, just reply with values cached in hci_conn */ 5922 rp.rssi = conn->rssi; 5923 rp.tx_power = conn->tx_power; 5924 rp.max_tx_power = conn->max_tx_power; 5925 5926 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO, 5927 MGMT_STATUS_SUCCESS, &rp, sizeof(rp)); 5928 } 5929 5930 unlock: 5931 hci_dev_unlock(hdev); 5932 return err; 5933 } 5934 5935 static int clock_info_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status) 5936 { 5937 struct hci_conn *conn = cmd->user_data; 5938 struct mgmt_rp_get_clock_info rp; 5939 struct hci_dev *hdev; 5940 int err; 5941 5942 memset(&rp, 0, sizeof(rp)); 5943 memcpy(&rp.addr, &cmd->param, sizeof(rp.addr)); 5944 5945 if (status) 5946 goto complete; 5947 5948 hdev = hci_dev_get(cmd->index); 5949 if (hdev) { 5950 rp.local_clock = cpu_to_le32(hdev->clock); 5951 hci_dev_put(hdev); 5952 } 5953 5954 if (conn) { 5955 rp.piconet_clock = cpu_to_le32(conn->clock); 5956 rp.accuracy = cpu_to_le16(conn->clock_accuracy); 5957 } 5958 5959 complete: 5960 err = mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status, &rp, 5961 sizeof(rp)); 5962 5963 if (conn) { 5964 hci_conn_drop(conn); 5965 hci_conn_put(conn); 5966 } 5967 5968 return err; 5969 } 5970 5971 static void get_clock_info_complete(struct hci_dev *hdev, u8 status, u16 opcode) 5972 { 5973 struct hci_cp_read_clock *hci_cp; 5974 struct mgmt_pending_cmd *cmd; 5975 struct hci_conn *conn; 5976 5977 BT_DBG("%s status %u", hdev->name, status); 5978 5979 hci_dev_lock(hdev); 5980 5981 hci_cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK); 5982 if (!hci_cp) 5983 goto unlock; 5984 5985 if (hci_cp->which) { 5986 u16 handle = __le16_to_cpu(hci_cp->handle); 5987 conn = hci_conn_hash_lookup_handle(hdev, handle); 5988 } else { 5989 conn = NULL; 5990 } 5991 5992 cmd = pending_find_data(MGMT_OP_GET_CLOCK_INFO, hdev, conn); 5993 if (!cmd) 5994 goto unlock; 5995 5996 cmd->cmd_complete(cmd, mgmt_status(status)); 5997 mgmt_pending_remove(cmd); 5998 5999 unlock: 6000 hci_dev_unlock(hdev); 6001 } 6002 6003 static int get_clock_info(struct sock *sk, struct hci_dev *hdev, void *data, 6004 u16 len) 6005 { 6006 struct mgmt_cp_get_clock_info *cp = data; 6007 struct mgmt_rp_get_clock_info rp; 6008 struct hci_cp_read_clock hci_cp; 6009 struct mgmt_pending_cmd *cmd; 6010 struct hci_request req; 6011 struct hci_conn *conn; 6012 int err; 6013 6014 BT_DBG("%s", hdev->name); 6015 6016 memset(&rp, 0, sizeof(rp)); 6017 bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr); 6018 rp.addr.type = cp->addr.type; 6019 6020 if (cp->addr.type != BDADDR_BREDR) 6021 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CLOCK_INFO, 6022 MGMT_STATUS_INVALID_PARAMS, 6023 &rp, sizeof(rp)); 6024 6025 hci_dev_lock(hdev); 6026 6027 if (!hdev_is_powered(hdev)) { 6028 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CLOCK_INFO, 6029 MGMT_STATUS_NOT_POWERED, &rp, 6030 sizeof(rp)); 6031 goto unlock; 6032 } 6033 6034 if (bacmp(&cp->addr.bdaddr, BDADDR_ANY)) { 6035 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, 6036 &cp->addr.bdaddr); 6037 if (!conn || conn->state != BT_CONNECTED) { 6038 err = mgmt_cmd_complete(sk, hdev->id, 6039 MGMT_OP_GET_CLOCK_INFO, 6040 MGMT_STATUS_NOT_CONNECTED, 6041 &rp, sizeof(rp)); 6042 goto unlock; 6043 } 6044 } else { 6045 conn = NULL; 6046 } 6047 6048 cmd = mgmt_pending_add(sk, MGMT_OP_GET_CLOCK_INFO, hdev, data, len); 6049 if (!cmd) { 6050 err = -ENOMEM; 6051 goto unlock; 6052 } 6053 6054 cmd->cmd_complete = clock_info_cmd_complete; 6055 6056 hci_req_init(&req, hdev); 6057 6058 memset(&hci_cp, 0, sizeof(hci_cp)); 6059 hci_req_add(&req, HCI_OP_READ_CLOCK, sizeof(hci_cp), &hci_cp); 6060 6061 if (conn) { 6062 hci_conn_hold(conn); 6063 cmd->user_data = hci_conn_get(conn); 6064 6065 hci_cp.handle = cpu_to_le16(conn->handle); 6066 hci_cp.which = 0x01; /* Piconet clock */ 6067 hci_req_add(&req, HCI_OP_READ_CLOCK, sizeof(hci_cp), &hci_cp); 6068 } 6069 6070 err = hci_req_run(&req, get_clock_info_complete); 6071 if (err < 0) 6072 mgmt_pending_remove(cmd); 6073 6074 unlock: 6075 hci_dev_unlock(hdev); 6076 return err; 6077 } 6078 6079 static bool is_connected(struct hci_dev *hdev, bdaddr_t *addr, u8 type) 6080 { 6081 struct hci_conn *conn; 6082 6083 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, addr); 6084 if (!conn) 6085 return false; 6086 6087 if (conn->dst_type != type) 6088 return false; 6089 6090 if (conn->state != BT_CONNECTED) 6091 return false; 6092 6093 return true; 6094 } 6095 6096 /* This function requires the caller holds hdev->lock */ 6097 static int hci_conn_params_set(struct hci_request *req, bdaddr_t *addr, 6098 u8 addr_type, u8 auto_connect) 6099 { 6100 struct hci_dev *hdev = req->hdev; 6101 struct hci_conn_params *params; 6102 6103 params = hci_conn_params_add(hdev, addr, addr_type); 6104 if (!params) 6105 return -EIO; 6106 6107 if (params->auto_connect == auto_connect) 6108 return 0; 6109 6110 list_del_init(¶ms->action); 6111 6112 switch (auto_connect) { 6113 case HCI_AUTO_CONN_DISABLED: 6114 case HCI_AUTO_CONN_LINK_LOSS: 6115 /* If auto connect is being disabled when we're trying to 6116 * connect to device, keep connecting. 6117 */ 6118 if (params->explicit_connect) 6119 list_add(¶ms->action, &hdev->pend_le_conns); 6120 6121 __hci_update_background_scan(req); 6122 break; 6123 case HCI_AUTO_CONN_REPORT: 6124 if (params->explicit_connect) 6125 list_add(¶ms->action, &hdev->pend_le_conns); 6126 else 6127 list_add(¶ms->action, &hdev->pend_le_reports); 6128 __hci_update_background_scan(req); 6129 break; 6130 case HCI_AUTO_CONN_DIRECT: 6131 case HCI_AUTO_CONN_ALWAYS: 6132 if (!is_connected(hdev, addr, addr_type)) { 6133 list_add(¶ms->action, &hdev->pend_le_conns); 6134 /* If we are in scan phase of connecting, we were 6135 * already added to pend_le_conns and scanning. 6136 */ 6137 if (params->auto_connect != HCI_AUTO_CONN_EXPLICIT) 6138 __hci_update_background_scan(req); 6139 } 6140 break; 6141 } 6142 6143 params->auto_connect = auto_connect; 6144 6145 BT_DBG("addr %pMR (type %u) auto_connect %u", addr, addr_type, 6146 auto_connect); 6147 6148 return 0; 6149 } 6150 6151 static void device_added(struct sock *sk, struct hci_dev *hdev, 6152 bdaddr_t *bdaddr, u8 type, u8 action) 6153 { 6154 struct mgmt_ev_device_added ev; 6155 6156 bacpy(&ev.addr.bdaddr, bdaddr); 6157 ev.addr.type = type; 6158 ev.action = action; 6159 6160 mgmt_event(MGMT_EV_DEVICE_ADDED, hdev, &ev, sizeof(ev), sk); 6161 } 6162 6163 static void add_device_complete(struct hci_dev *hdev, u8 status, u16 opcode) 6164 { 6165 struct mgmt_pending_cmd *cmd; 6166 6167 BT_DBG("status 0x%02x", status); 6168 6169 hci_dev_lock(hdev); 6170 6171 cmd = pending_find(MGMT_OP_ADD_DEVICE, hdev); 6172 if (!cmd) 6173 goto unlock; 6174 6175 cmd->cmd_complete(cmd, mgmt_status(status)); 6176 mgmt_pending_remove(cmd); 6177 6178 unlock: 6179 hci_dev_unlock(hdev); 6180 } 6181 6182 static int add_device(struct sock *sk, struct hci_dev *hdev, 6183 void *data, u16 len) 6184 { 6185 struct mgmt_cp_add_device *cp = data; 6186 struct mgmt_pending_cmd *cmd; 6187 struct hci_request req; 6188 u8 auto_conn, addr_type; 6189 int err; 6190 6191 BT_DBG("%s", hdev->name); 6192 6193 if (!bdaddr_type_is_valid(cp->addr.type) || 6194 !bacmp(&cp->addr.bdaddr, BDADDR_ANY)) 6195 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_DEVICE, 6196 MGMT_STATUS_INVALID_PARAMS, 6197 &cp->addr, sizeof(cp->addr)); 6198 6199 if (cp->action != 0x00 && cp->action != 0x01 && cp->action != 0x02) 6200 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_DEVICE, 6201 MGMT_STATUS_INVALID_PARAMS, 6202 &cp->addr, sizeof(cp->addr)); 6203 6204 hci_req_init(&req, hdev); 6205 6206 hci_dev_lock(hdev); 6207 6208 cmd = mgmt_pending_add(sk, MGMT_OP_ADD_DEVICE, hdev, data, len); 6209 if (!cmd) { 6210 err = -ENOMEM; 6211 goto unlock; 6212 } 6213 6214 cmd->cmd_complete = addr_cmd_complete; 6215 6216 if (cp->addr.type == BDADDR_BREDR) { 6217 /* Only incoming connections action is supported for now */ 6218 if (cp->action != 0x01) { 6219 err = cmd->cmd_complete(cmd, 6220 MGMT_STATUS_INVALID_PARAMS); 6221 mgmt_pending_remove(cmd); 6222 goto unlock; 6223 } 6224 6225 err = hci_bdaddr_list_add(&hdev->whitelist, &cp->addr.bdaddr, 6226 cp->addr.type); 6227 if (err) 6228 goto unlock; 6229 6230 __hci_update_page_scan(&req); 6231 6232 goto added; 6233 } 6234 6235 if (cp->addr.type == BDADDR_LE_PUBLIC) 6236 addr_type = ADDR_LE_DEV_PUBLIC; 6237 else 6238 addr_type = ADDR_LE_DEV_RANDOM; 6239 6240 if (cp->action == 0x02) 6241 auto_conn = HCI_AUTO_CONN_ALWAYS; 6242 else if (cp->action == 0x01) 6243 auto_conn = HCI_AUTO_CONN_DIRECT; 6244 else 6245 auto_conn = HCI_AUTO_CONN_REPORT; 6246 6247 /* Kernel internally uses conn_params with resolvable private 6248 * address, but Add Device allows only identity addresses. 6249 * Make sure it is enforced before calling 6250 * hci_conn_params_lookup. 6251 */ 6252 if (!hci_is_identity_address(&cp->addr.bdaddr, addr_type)) { 6253 err = cmd->cmd_complete(cmd, MGMT_STATUS_INVALID_PARAMS); 6254 mgmt_pending_remove(cmd); 6255 goto unlock; 6256 } 6257 6258 /* If the connection parameters don't exist for this device, 6259 * they will be created and configured with defaults. 6260 */ 6261 if (hci_conn_params_set(&req, &cp->addr.bdaddr, addr_type, 6262 auto_conn) < 0) { 6263 err = cmd->cmd_complete(cmd, MGMT_STATUS_FAILED); 6264 mgmt_pending_remove(cmd); 6265 goto unlock; 6266 } 6267 6268 added: 6269 device_added(sk, hdev, &cp->addr.bdaddr, cp->addr.type, cp->action); 6270 6271 err = hci_req_run(&req, add_device_complete); 6272 if (err < 0) { 6273 /* ENODATA means no HCI commands were needed (e.g. if 6274 * the adapter is powered off). 6275 */ 6276 if (err == -ENODATA) 6277 err = cmd->cmd_complete(cmd, MGMT_STATUS_SUCCESS); 6278 mgmt_pending_remove(cmd); 6279 } 6280 6281 unlock: 6282 hci_dev_unlock(hdev); 6283 return err; 6284 } 6285 6286 static void device_removed(struct sock *sk, struct hci_dev *hdev, 6287 bdaddr_t *bdaddr, u8 type) 6288 { 6289 struct mgmt_ev_device_removed ev; 6290 6291 bacpy(&ev.addr.bdaddr, bdaddr); 6292 ev.addr.type = type; 6293 6294 mgmt_event(MGMT_EV_DEVICE_REMOVED, hdev, &ev, sizeof(ev), sk); 6295 } 6296 6297 static void remove_device_complete(struct hci_dev *hdev, u8 status, u16 opcode) 6298 { 6299 struct mgmt_pending_cmd *cmd; 6300 6301 BT_DBG("status 0x%02x", status); 6302 6303 hci_dev_lock(hdev); 6304 6305 cmd = pending_find(MGMT_OP_REMOVE_DEVICE, hdev); 6306 if (!cmd) 6307 goto unlock; 6308 6309 cmd->cmd_complete(cmd, mgmt_status(status)); 6310 mgmt_pending_remove(cmd); 6311 6312 unlock: 6313 hci_dev_unlock(hdev); 6314 } 6315 6316 static int remove_device(struct sock *sk, struct hci_dev *hdev, 6317 void *data, u16 len) 6318 { 6319 struct mgmt_cp_remove_device *cp = data; 6320 struct mgmt_pending_cmd *cmd; 6321 struct hci_request req; 6322 int err; 6323 6324 BT_DBG("%s", hdev->name); 6325 6326 hci_req_init(&req, hdev); 6327 6328 hci_dev_lock(hdev); 6329 6330 cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_DEVICE, hdev, data, len); 6331 if (!cmd) { 6332 err = -ENOMEM; 6333 goto unlock; 6334 } 6335 6336 cmd->cmd_complete = addr_cmd_complete; 6337 6338 if (bacmp(&cp->addr.bdaddr, BDADDR_ANY)) { 6339 struct hci_conn_params *params; 6340 u8 addr_type; 6341 6342 if (!bdaddr_type_is_valid(cp->addr.type)) { 6343 err = cmd->cmd_complete(cmd, 6344 MGMT_STATUS_INVALID_PARAMS); 6345 mgmt_pending_remove(cmd); 6346 goto unlock; 6347 } 6348 6349 if (cp->addr.type == BDADDR_BREDR) { 6350 err = hci_bdaddr_list_del(&hdev->whitelist, 6351 &cp->addr.bdaddr, 6352 cp->addr.type); 6353 if (err) { 6354 err = cmd->cmd_complete(cmd, 6355 MGMT_STATUS_INVALID_PARAMS); 6356 mgmt_pending_remove(cmd); 6357 goto unlock; 6358 } 6359 6360 __hci_update_page_scan(&req); 6361 6362 device_removed(sk, hdev, &cp->addr.bdaddr, 6363 cp->addr.type); 6364 goto complete; 6365 } 6366 6367 if (cp->addr.type == BDADDR_LE_PUBLIC) 6368 addr_type = ADDR_LE_DEV_PUBLIC; 6369 else 6370 addr_type = ADDR_LE_DEV_RANDOM; 6371 6372 /* Kernel internally uses conn_params with resolvable private 6373 * address, but Remove Device allows only identity addresses. 6374 * Make sure it is enforced before calling 6375 * hci_conn_params_lookup. 6376 */ 6377 if (!hci_is_identity_address(&cp->addr.bdaddr, addr_type)) { 6378 err = cmd->cmd_complete(cmd, 6379 MGMT_STATUS_INVALID_PARAMS); 6380 mgmt_pending_remove(cmd); 6381 goto unlock; 6382 } 6383 6384 params = hci_conn_params_lookup(hdev, &cp->addr.bdaddr, 6385 addr_type); 6386 if (!params) { 6387 err = cmd->cmd_complete(cmd, 6388 MGMT_STATUS_INVALID_PARAMS); 6389 mgmt_pending_remove(cmd); 6390 goto unlock; 6391 } 6392 6393 if (params->auto_connect == HCI_AUTO_CONN_DISABLED || 6394 params->auto_connect == HCI_AUTO_CONN_EXPLICIT) { 6395 err = cmd->cmd_complete(cmd, 6396 MGMT_STATUS_INVALID_PARAMS); 6397 mgmt_pending_remove(cmd); 6398 goto unlock; 6399 } 6400 6401 list_del(¶ms->action); 6402 list_del(¶ms->list); 6403 kfree(params); 6404 __hci_update_background_scan(&req); 6405 6406 device_removed(sk, hdev, &cp->addr.bdaddr, cp->addr.type); 6407 } else { 6408 struct hci_conn_params *p, *tmp; 6409 struct bdaddr_list *b, *btmp; 6410 6411 if (cp->addr.type) { 6412 err = cmd->cmd_complete(cmd, 6413 MGMT_STATUS_INVALID_PARAMS); 6414 mgmt_pending_remove(cmd); 6415 goto unlock; 6416 } 6417 6418 list_for_each_entry_safe(b, btmp, &hdev->whitelist, list) { 6419 device_removed(sk, hdev, &b->bdaddr, b->bdaddr_type); 6420 list_del(&b->list); 6421 kfree(b); 6422 } 6423 6424 __hci_update_page_scan(&req); 6425 6426 list_for_each_entry_safe(p, tmp, &hdev->le_conn_params, list) { 6427 if (p->auto_connect == HCI_AUTO_CONN_DISABLED) 6428 continue; 6429 device_removed(sk, hdev, &p->addr, p->addr_type); 6430 if (p->explicit_connect) { 6431 p->auto_connect = HCI_AUTO_CONN_EXPLICIT; 6432 continue; 6433 } 6434 list_del(&p->action); 6435 list_del(&p->list); 6436 kfree(p); 6437 } 6438 6439 BT_DBG("All LE connection parameters were removed"); 6440 6441 __hci_update_background_scan(&req); 6442 } 6443 6444 complete: 6445 err = hci_req_run(&req, remove_device_complete); 6446 if (err < 0) { 6447 /* ENODATA means no HCI commands were needed (e.g. if 6448 * the adapter is powered off). 6449 */ 6450 if (err == -ENODATA) 6451 err = cmd->cmd_complete(cmd, MGMT_STATUS_SUCCESS); 6452 mgmt_pending_remove(cmd); 6453 } 6454 6455 unlock: 6456 hci_dev_unlock(hdev); 6457 return err; 6458 } 6459 6460 static int load_conn_param(struct sock *sk, struct hci_dev *hdev, void *data, 6461 u16 len) 6462 { 6463 struct mgmt_cp_load_conn_param *cp = data; 6464 const u16 max_param_count = ((U16_MAX - sizeof(*cp)) / 6465 sizeof(struct mgmt_conn_param)); 6466 u16 param_count, expected_len; 6467 int i; 6468 6469 if (!lmp_le_capable(hdev)) 6470 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM, 6471 MGMT_STATUS_NOT_SUPPORTED); 6472 6473 param_count = __le16_to_cpu(cp->param_count); 6474 if (param_count > max_param_count) { 6475 BT_ERR("load_conn_param: too big param_count value %u", 6476 param_count); 6477 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM, 6478 MGMT_STATUS_INVALID_PARAMS); 6479 } 6480 6481 expected_len = sizeof(*cp) + param_count * 6482 sizeof(struct mgmt_conn_param); 6483 if (expected_len != len) { 6484 BT_ERR("load_conn_param: expected %u bytes, got %u bytes", 6485 expected_len, len); 6486 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM, 6487 MGMT_STATUS_INVALID_PARAMS); 6488 } 6489 6490 BT_DBG("%s param_count %u", hdev->name, param_count); 6491 6492 hci_dev_lock(hdev); 6493 6494 hci_conn_params_clear_disabled(hdev); 6495 6496 for (i = 0; i < param_count; i++) { 6497 struct mgmt_conn_param *param = &cp->params[i]; 6498 struct hci_conn_params *hci_param; 6499 u16 min, max, latency, timeout; 6500 u8 addr_type; 6501 6502 BT_DBG("Adding %pMR (type %u)", ¶m->addr.bdaddr, 6503 param->addr.type); 6504 6505 if (param->addr.type == BDADDR_LE_PUBLIC) { 6506 addr_type = ADDR_LE_DEV_PUBLIC; 6507 } else if (param->addr.type == BDADDR_LE_RANDOM) { 6508 addr_type = ADDR_LE_DEV_RANDOM; 6509 } else { 6510 BT_ERR("Ignoring invalid connection parameters"); 6511 continue; 6512 } 6513 6514 min = le16_to_cpu(param->min_interval); 6515 max = le16_to_cpu(param->max_interval); 6516 latency = le16_to_cpu(param->latency); 6517 timeout = le16_to_cpu(param->timeout); 6518 6519 BT_DBG("min 0x%04x max 0x%04x latency 0x%04x timeout 0x%04x", 6520 min, max, latency, timeout); 6521 6522 if (hci_check_conn_params(min, max, latency, timeout) < 0) { 6523 BT_ERR("Ignoring invalid connection parameters"); 6524 continue; 6525 } 6526 6527 hci_param = hci_conn_params_add(hdev, ¶m->addr.bdaddr, 6528 addr_type); 6529 if (!hci_param) { 6530 BT_ERR("Failed to add connection parameters"); 6531 continue; 6532 } 6533 6534 hci_param->conn_min_interval = min; 6535 hci_param->conn_max_interval = max; 6536 hci_param->conn_latency = latency; 6537 hci_param->supervision_timeout = timeout; 6538 } 6539 6540 hci_dev_unlock(hdev); 6541 6542 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM, 0, 6543 NULL, 0); 6544 } 6545 6546 static int set_external_config(struct sock *sk, struct hci_dev *hdev, 6547 void *data, u16 len) 6548 { 6549 struct mgmt_cp_set_external_config *cp = data; 6550 bool changed; 6551 int err; 6552 6553 BT_DBG("%s", hdev->name); 6554 6555 if (hdev_is_powered(hdev)) 6556 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG, 6557 MGMT_STATUS_REJECTED); 6558 6559 if (cp->config != 0x00 && cp->config != 0x01) 6560 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG, 6561 MGMT_STATUS_INVALID_PARAMS); 6562 6563 if (!test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks)) 6564 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG, 6565 MGMT_STATUS_NOT_SUPPORTED); 6566 6567 hci_dev_lock(hdev); 6568 6569 if (cp->config) 6570 changed = !hci_dev_test_and_set_flag(hdev, HCI_EXT_CONFIGURED); 6571 else 6572 changed = hci_dev_test_and_clear_flag(hdev, HCI_EXT_CONFIGURED); 6573 6574 err = send_options_rsp(sk, MGMT_OP_SET_EXTERNAL_CONFIG, hdev); 6575 if (err < 0) 6576 goto unlock; 6577 6578 if (!changed) 6579 goto unlock; 6580 6581 err = new_options(hdev, sk); 6582 6583 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) == is_configured(hdev)) { 6584 mgmt_index_removed(hdev); 6585 6586 if (hci_dev_test_and_change_flag(hdev, HCI_UNCONFIGURED)) { 6587 hci_dev_set_flag(hdev, HCI_CONFIG); 6588 hci_dev_set_flag(hdev, HCI_AUTO_OFF); 6589 6590 queue_work(hdev->req_workqueue, &hdev->power_on); 6591 } else { 6592 set_bit(HCI_RAW, &hdev->flags); 6593 mgmt_index_added(hdev); 6594 } 6595 } 6596 6597 unlock: 6598 hci_dev_unlock(hdev); 6599 return err; 6600 } 6601 6602 static int set_public_address(struct sock *sk, struct hci_dev *hdev, 6603 void *data, u16 len) 6604 { 6605 struct mgmt_cp_set_public_address *cp = data; 6606 bool changed; 6607 int err; 6608 6609 BT_DBG("%s", hdev->name); 6610 6611 if (hdev_is_powered(hdev)) 6612 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS, 6613 MGMT_STATUS_REJECTED); 6614 6615 if (!bacmp(&cp->bdaddr, BDADDR_ANY)) 6616 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS, 6617 MGMT_STATUS_INVALID_PARAMS); 6618 6619 if (!hdev->set_bdaddr) 6620 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS, 6621 MGMT_STATUS_NOT_SUPPORTED); 6622 6623 hci_dev_lock(hdev); 6624 6625 changed = !!bacmp(&hdev->public_addr, &cp->bdaddr); 6626 bacpy(&hdev->public_addr, &cp->bdaddr); 6627 6628 err = send_options_rsp(sk, MGMT_OP_SET_PUBLIC_ADDRESS, hdev); 6629 if (err < 0) 6630 goto unlock; 6631 6632 if (!changed) 6633 goto unlock; 6634 6635 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) 6636 err = new_options(hdev, sk); 6637 6638 if (is_configured(hdev)) { 6639 mgmt_index_removed(hdev); 6640 6641 hci_dev_clear_flag(hdev, HCI_UNCONFIGURED); 6642 6643 hci_dev_set_flag(hdev, HCI_CONFIG); 6644 hci_dev_set_flag(hdev, HCI_AUTO_OFF); 6645 6646 queue_work(hdev->req_workqueue, &hdev->power_on); 6647 } 6648 6649 unlock: 6650 hci_dev_unlock(hdev); 6651 return err; 6652 } 6653 6654 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data, 6655 u8 data_len) 6656 { 6657 eir[eir_len++] = sizeof(type) + data_len; 6658 eir[eir_len++] = type; 6659 memcpy(&eir[eir_len], data, data_len); 6660 eir_len += data_len; 6661 6662 return eir_len; 6663 } 6664 6665 static void read_local_oob_ext_data_complete(struct hci_dev *hdev, u8 status, 6666 u16 opcode, struct sk_buff *skb) 6667 { 6668 const struct mgmt_cp_read_local_oob_ext_data *mgmt_cp; 6669 struct mgmt_rp_read_local_oob_ext_data *mgmt_rp; 6670 u8 *h192, *r192, *h256, *r256; 6671 struct mgmt_pending_cmd *cmd; 6672 u16 eir_len; 6673 int err; 6674 6675 BT_DBG("%s status %u", hdev->name, status); 6676 6677 cmd = pending_find(MGMT_OP_READ_LOCAL_OOB_EXT_DATA, hdev); 6678 if (!cmd) 6679 return; 6680 6681 mgmt_cp = cmd->param; 6682 6683 if (status) { 6684 status = mgmt_status(status); 6685 eir_len = 0; 6686 6687 h192 = NULL; 6688 r192 = NULL; 6689 h256 = NULL; 6690 r256 = NULL; 6691 } else if (opcode == HCI_OP_READ_LOCAL_OOB_DATA) { 6692 struct hci_rp_read_local_oob_data *rp; 6693 6694 if (skb->len != sizeof(*rp)) { 6695 status = MGMT_STATUS_FAILED; 6696 eir_len = 0; 6697 } else { 6698 status = MGMT_STATUS_SUCCESS; 6699 rp = (void *)skb->data; 6700 6701 eir_len = 5 + 18 + 18; 6702 h192 = rp->hash; 6703 r192 = rp->rand; 6704 h256 = NULL; 6705 r256 = NULL; 6706 } 6707 } else { 6708 struct hci_rp_read_local_oob_ext_data *rp; 6709 6710 if (skb->len != sizeof(*rp)) { 6711 status = MGMT_STATUS_FAILED; 6712 eir_len = 0; 6713 } else { 6714 status = MGMT_STATUS_SUCCESS; 6715 rp = (void *)skb->data; 6716 6717 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) { 6718 eir_len = 5 + 18 + 18; 6719 h192 = NULL; 6720 r192 = NULL; 6721 } else { 6722 eir_len = 5 + 18 + 18 + 18 + 18; 6723 h192 = rp->hash192; 6724 r192 = rp->rand192; 6725 } 6726 6727 h256 = rp->hash256; 6728 r256 = rp->rand256; 6729 } 6730 } 6731 6732 mgmt_rp = kmalloc(sizeof(*mgmt_rp) + eir_len, GFP_KERNEL); 6733 if (!mgmt_rp) 6734 goto done; 6735 6736 if (status) 6737 goto send_rsp; 6738 6739 eir_len = eir_append_data(mgmt_rp->eir, 0, EIR_CLASS_OF_DEV, 6740 hdev->dev_class, 3); 6741 6742 if (h192 && r192) { 6743 eir_len = eir_append_data(mgmt_rp->eir, eir_len, 6744 EIR_SSP_HASH_C192, h192, 16); 6745 eir_len = eir_append_data(mgmt_rp->eir, eir_len, 6746 EIR_SSP_RAND_R192, r192, 16); 6747 } 6748 6749 if (h256 && r256) { 6750 eir_len = eir_append_data(mgmt_rp->eir, eir_len, 6751 EIR_SSP_HASH_C256, h256, 16); 6752 eir_len = eir_append_data(mgmt_rp->eir, eir_len, 6753 EIR_SSP_RAND_R256, r256, 16); 6754 } 6755 6756 send_rsp: 6757 mgmt_rp->type = mgmt_cp->type; 6758 mgmt_rp->eir_len = cpu_to_le16(eir_len); 6759 6760 err = mgmt_cmd_complete(cmd->sk, hdev->id, 6761 MGMT_OP_READ_LOCAL_OOB_EXT_DATA, status, 6762 mgmt_rp, sizeof(*mgmt_rp) + eir_len); 6763 if (err < 0 || status) 6764 goto done; 6765 6766 hci_sock_set_flag(cmd->sk, HCI_MGMT_OOB_DATA_EVENTS); 6767 6768 err = mgmt_limited_event(MGMT_EV_LOCAL_OOB_DATA_UPDATED, hdev, 6769 mgmt_rp, sizeof(*mgmt_rp) + eir_len, 6770 HCI_MGMT_OOB_DATA_EVENTS, cmd->sk); 6771 done: 6772 kfree(mgmt_rp); 6773 mgmt_pending_remove(cmd); 6774 } 6775 6776 static int read_local_ssp_oob_req(struct hci_dev *hdev, struct sock *sk, 6777 struct mgmt_cp_read_local_oob_ext_data *cp) 6778 { 6779 struct mgmt_pending_cmd *cmd; 6780 struct hci_request req; 6781 int err; 6782 6783 cmd = mgmt_pending_add(sk, MGMT_OP_READ_LOCAL_OOB_EXT_DATA, hdev, 6784 cp, sizeof(*cp)); 6785 if (!cmd) 6786 return -ENOMEM; 6787 6788 hci_req_init(&req, hdev); 6789 6790 if (bredr_sc_enabled(hdev)) 6791 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_EXT_DATA, 0, NULL); 6792 else 6793 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_DATA, 0, NULL); 6794 6795 err = hci_req_run_skb(&req, read_local_oob_ext_data_complete); 6796 if (err < 0) { 6797 mgmt_pending_remove(cmd); 6798 return err; 6799 } 6800 6801 return 0; 6802 } 6803 6804 static int read_local_oob_ext_data(struct sock *sk, struct hci_dev *hdev, 6805 void *data, u16 data_len) 6806 { 6807 struct mgmt_cp_read_local_oob_ext_data *cp = data; 6808 struct mgmt_rp_read_local_oob_ext_data *rp; 6809 size_t rp_len; 6810 u16 eir_len; 6811 u8 status, flags, role, addr[7], hash[16], rand[16]; 6812 int err; 6813 6814 BT_DBG("%s", hdev->name); 6815 6816 if (hdev_is_powered(hdev)) { 6817 switch (cp->type) { 6818 case BIT(BDADDR_BREDR): 6819 status = mgmt_bredr_support(hdev); 6820 if (status) 6821 eir_len = 0; 6822 else 6823 eir_len = 5; 6824 break; 6825 case (BIT(BDADDR_LE_PUBLIC) | BIT(BDADDR_LE_RANDOM)): 6826 status = mgmt_le_support(hdev); 6827 if (status) 6828 eir_len = 0; 6829 else 6830 eir_len = 9 + 3 + 18 + 18 + 3; 6831 break; 6832 default: 6833 status = MGMT_STATUS_INVALID_PARAMS; 6834 eir_len = 0; 6835 break; 6836 } 6837 } else { 6838 status = MGMT_STATUS_NOT_POWERED; 6839 eir_len = 0; 6840 } 6841 6842 rp_len = sizeof(*rp) + eir_len; 6843 rp = kmalloc(rp_len, GFP_ATOMIC); 6844 if (!rp) 6845 return -ENOMEM; 6846 6847 if (status) 6848 goto complete; 6849 6850 hci_dev_lock(hdev); 6851 6852 eir_len = 0; 6853 switch (cp->type) { 6854 case BIT(BDADDR_BREDR): 6855 if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { 6856 err = read_local_ssp_oob_req(hdev, sk, cp); 6857 hci_dev_unlock(hdev); 6858 if (!err) 6859 goto done; 6860 6861 status = MGMT_STATUS_FAILED; 6862 goto complete; 6863 } else { 6864 eir_len = eir_append_data(rp->eir, eir_len, 6865 EIR_CLASS_OF_DEV, 6866 hdev->dev_class, 3); 6867 } 6868 break; 6869 case (BIT(BDADDR_LE_PUBLIC) | BIT(BDADDR_LE_RANDOM)): 6870 if (hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 6871 smp_generate_oob(hdev, hash, rand) < 0) { 6872 hci_dev_unlock(hdev); 6873 status = MGMT_STATUS_FAILED; 6874 goto complete; 6875 } 6876 6877 /* This should return the active RPA, but since the RPA 6878 * is only programmed on demand, it is really hard to fill 6879 * this in at the moment. For now disallow retrieving 6880 * local out-of-band data when privacy is in use. 6881 * 6882 * Returning the identity address will not help here since 6883 * pairing happens before the identity resolving key is 6884 * known and thus the connection establishment happens 6885 * based on the RPA and not the identity address. 6886 */ 6887 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { 6888 hci_dev_unlock(hdev); 6889 status = MGMT_STATUS_REJECTED; 6890 goto complete; 6891 } 6892 6893 if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) || 6894 !bacmp(&hdev->bdaddr, BDADDR_ANY) || 6895 (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && 6896 bacmp(&hdev->static_addr, BDADDR_ANY))) { 6897 memcpy(addr, &hdev->static_addr, 6); 6898 addr[6] = 0x01; 6899 } else { 6900 memcpy(addr, &hdev->bdaddr, 6); 6901 addr[6] = 0x00; 6902 } 6903 6904 eir_len = eir_append_data(rp->eir, eir_len, EIR_LE_BDADDR, 6905 addr, sizeof(addr)); 6906 6907 if (hci_dev_test_flag(hdev, HCI_ADVERTISING)) 6908 role = 0x02; 6909 else 6910 role = 0x01; 6911 6912 eir_len = eir_append_data(rp->eir, eir_len, EIR_LE_ROLE, 6913 &role, sizeof(role)); 6914 6915 if (hci_dev_test_flag(hdev, HCI_SC_ENABLED)) { 6916 eir_len = eir_append_data(rp->eir, eir_len, 6917 EIR_LE_SC_CONFIRM, 6918 hash, sizeof(hash)); 6919 6920 eir_len = eir_append_data(rp->eir, eir_len, 6921 EIR_LE_SC_RANDOM, 6922 rand, sizeof(rand)); 6923 } 6924 6925 flags = get_adv_discov_flags(hdev); 6926 6927 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) 6928 flags |= LE_AD_NO_BREDR; 6929 6930 eir_len = eir_append_data(rp->eir, eir_len, EIR_FLAGS, 6931 &flags, sizeof(flags)); 6932 break; 6933 } 6934 6935 hci_dev_unlock(hdev); 6936 6937 hci_sock_set_flag(sk, HCI_MGMT_OOB_DATA_EVENTS); 6938 6939 status = MGMT_STATUS_SUCCESS; 6940 6941 complete: 6942 rp->type = cp->type; 6943 rp->eir_len = cpu_to_le16(eir_len); 6944 6945 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_EXT_DATA, 6946 status, rp, sizeof(*rp) + eir_len); 6947 if (err < 0 || status) 6948 goto done; 6949 6950 err = mgmt_limited_event(MGMT_EV_LOCAL_OOB_DATA_UPDATED, hdev, 6951 rp, sizeof(*rp) + eir_len, 6952 HCI_MGMT_OOB_DATA_EVENTS, sk); 6953 6954 done: 6955 kfree(rp); 6956 6957 return err; 6958 } 6959 6960 static u32 get_supported_adv_flags(struct hci_dev *hdev) 6961 { 6962 u32 flags = 0; 6963 6964 flags |= MGMT_ADV_FLAG_CONNECTABLE; 6965 flags |= MGMT_ADV_FLAG_DISCOV; 6966 flags |= MGMT_ADV_FLAG_LIMITED_DISCOV; 6967 flags |= MGMT_ADV_FLAG_MANAGED_FLAGS; 6968 6969 if (hdev->adv_tx_power != HCI_TX_POWER_INVALID) 6970 flags |= MGMT_ADV_FLAG_TX_POWER; 6971 6972 return flags; 6973 } 6974 6975 static int read_adv_features(struct sock *sk, struct hci_dev *hdev, 6976 void *data, u16 data_len) 6977 { 6978 struct mgmt_rp_read_adv_features *rp; 6979 size_t rp_len; 6980 int err, i; 6981 bool instance; 6982 struct adv_info *adv_instance; 6983 u32 supported_flags; 6984 6985 BT_DBG("%s", hdev->name); 6986 6987 if (!lmp_le_capable(hdev)) 6988 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_ADV_FEATURES, 6989 MGMT_STATUS_REJECTED); 6990 6991 hci_dev_lock(hdev); 6992 6993 rp_len = sizeof(*rp); 6994 6995 instance = hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE); 6996 if (instance) 6997 rp_len += hdev->adv_instance_cnt; 6998 6999 rp = kmalloc(rp_len, GFP_ATOMIC); 7000 if (!rp) { 7001 hci_dev_unlock(hdev); 7002 return -ENOMEM; 7003 } 7004 7005 supported_flags = get_supported_adv_flags(hdev); 7006 7007 rp->supported_flags = cpu_to_le32(supported_flags); 7008 rp->max_adv_data_len = HCI_MAX_AD_LENGTH; 7009 rp->max_scan_rsp_len = HCI_MAX_AD_LENGTH; 7010 rp->max_instances = HCI_MAX_ADV_INSTANCES; 7011 7012 if (instance) { 7013 i = 0; 7014 list_for_each_entry(adv_instance, &hdev->adv_instances, list) { 7015 if (i >= hdev->adv_instance_cnt) 7016 break; 7017 7018 rp->instance[i] = adv_instance->instance; 7019 i++; 7020 } 7021 rp->num_instances = hdev->adv_instance_cnt; 7022 } else { 7023 rp->num_instances = 0; 7024 } 7025 7026 hci_dev_unlock(hdev); 7027 7028 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_ADV_FEATURES, 7029 MGMT_STATUS_SUCCESS, rp, rp_len); 7030 7031 kfree(rp); 7032 7033 return err; 7034 } 7035 7036 static bool tlv_data_is_valid(struct hci_dev *hdev, u32 adv_flags, u8 *data, 7037 u8 len, bool is_adv_data) 7038 { 7039 u8 max_len = HCI_MAX_AD_LENGTH; 7040 int i, cur_len; 7041 bool flags_managed = false; 7042 bool tx_power_managed = false; 7043 u32 flags_params = MGMT_ADV_FLAG_DISCOV | MGMT_ADV_FLAG_LIMITED_DISCOV | 7044 MGMT_ADV_FLAG_MANAGED_FLAGS; 7045 7046 if (is_adv_data && (adv_flags & flags_params)) { 7047 flags_managed = true; 7048 max_len -= 3; 7049 } 7050 7051 if (is_adv_data && (adv_flags & MGMT_ADV_FLAG_TX_POWER)) { 7052 tx_power_managed = true; 7053 max_len -= 3; 7054 } 7055 7056 if (len > max_len) 7057 return false; 7058 7059 /* Make sure that the data is correctly formatted. */ 7060 for (i = 0, cur_len = 0; i < len; i += (cur_len + 1)) { 7061 cur_len = data[i]; 7062 7063 if (flags_managed && data[i + 1] == EIR_FLAGS) 7064 return false; 7065 7066 if (tx_power_managed && data[i + 1] == EIR_TX_POWER) 7067 return false; 7068 7069 /* If the current field length would exceed the total data 7070 * length, then it's invalid. 7071 */ 7072 if (i + cur_len >= len) 7073 return false; 7074 } 7075 7076 return true; 7077 } 7078 7079 static void add_advertising_complete(struct hci_dev *hdev, u8 status, 7080 u16 opcode) 7081 { 7082 struct mgmt_pending_cmd *cmd; 7083 struct mgmt_cp_add_advertising *cp; 7084 struct mgmt_rp_add_advertising rp; 7085 struct adv_info *adv_instance, *n; 7086 u8 instance; 7087 7088 BT_DBG("status %d", status); 7089 7090 hci_dev_lock(hdev); 7091 7092 cmd = pending_find(MGMT_OP_ADD_ADVERTISING, hdev); 7093 7094 if (status) 7095 hci_dev_clear_flag(hdev, HCI_ADVERTISING_INSTANCE); 7096 7097 list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) { 7098 if (!adv_instance->pending) 7099 continue; 7100 7101 if (!status) { 7102 adv_instance->pending = false; 7103 continue; 7104 } 7105 7106 instance = adv_instance->instance; 7107 7108 if (hdev->cur_adv_instance == instance) 7109 cancel_adv_timeout(hdev); 7110 7111 hci_remove_adv_instance(hdev, instance); 7112 advertising_removed(cmd ? cmd->sk : NULL, hdev, instance); 7113 } 7114 7115 if (!cmd) 7116 goto unlock; 7117 7118 cp = cmd->param; 7119 rp.instance = cp->instance; 7120 7121 if (status) 7122 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, 7123 mgmt_status(status)); 7124 else 7125 mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, 7126 mgmt_status(status), &rp, sizeof(rp)); 7127 7128 mgmt_pending_remove(cmd); 7129 7130 unlock: 7131 hci_dev_unlock(hdev); 7132 } 7133 7134 void mgmt_adv_timeout_expired(struct hci_dev *hdev) 7135 { 7136 u8 instance; 7137 struct hci_request req; 7138 7139 hdev->adv_instance_timeout = 0; 7140 7141 instance = get_current_adv_instance(hdev); 7142 if (instance == 0x00) 7143 return; 7144 7145 hci_dev_lock(hdev); 7146 hci_req_init(&req, hdev); 7147 7148 clear_adv_instance(hdev, &req, instance, false); 7149 7150 if (list_empty(&hdev->adv_instances)) 7151 disable_advertising(&req); 7152 7153 if (!skb_queue_empty(&req.cmd_q)) 7154 hci_req_run(&req, NULL); 7155 7156 hci_dev_unlock(hdev); 7157 } 7158 7159 static int add_advertising(struct sock *sk, struct hci_dev *hdev, 7160 void *data, u16 data_len) 7161 { 7162 struct mgmt_cp_add_advertising *cp = data; 7163 struct mgmt_rp_add_advertising rp; 7164 u32 flags; 7165 u32 supported_flags; 7166 u8 status; 7167 u16 timeout, duration; 7168 unsigned int prev_instance_cnt = hdev->adv_instance_cnt; 7169 u8 schedule_instance = 0; 7170 struct adv_info *next_instance; 7171 int err; 7172 struct mgmt_pending_cmd *cmd; 7173 struct hci_request req; 7174 7175 BT_DBG("%s", hdev->name); 7176 7177 status = mgmt_le_support(hdev); 7178 if (status) 7179 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING, 7180 status); 7181 7182 flags = __le32_to_cpu(cp->flags); 7183 timeout = __le16_to_cpu(cp->timeout); 7184 duration = __le16_to_cpu(cp->duration); 7185 7186 /* The current implementation only supports a subset of the specified 7187 * flags. 7188 */ 7189 supported_flags = get_supported_adv_flags(hdev); 7190 if (flags & ~supported_flags) 7191 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING, 7192 MGMT_STATUS_INVALID_PARAMS); 7193 7194 hci_dev_lock(hdev); 7195 7196 if (timeout && !hdev_is_powered(hdev)) { 7197 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING, 7198 MGMT_STATUS_REJECTED); 7199 goto unlock; 7200 } 7201 7202 if (pending_find(MGMT_OP_ADD_ADVERTISING, hdev) || 7203 pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev) || 7204 pending_find(MGMT_OP_SET_LE, hdev)) { 7205 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING, 7206 MGMT_STATUS_BUSY); 7207 goto unlock; 7208 } 7209 7210 if (!tlv_data_is_valid(hdev, flags, cp->data, cp->adv_data_len, true) || 7211 !tlv_data_is_valid(hdev, flags, cp->data + cp->adv_data_len, 7212 cp->scan_rsp_len, false)) { 7213 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING, 7214 MGMT_STATUS_INVALID_PARAMS); 7215 goto unlock; 7216 } 7217 7218 err = hci_add_adv_instance(hdev, cp->instance, flags, 7219 cp->adv_data_len, cp->data, 7220 cp->scan_rsp_len, 7221 cp->data + cp->adv_data_len, 7222 timeout, duration); 7223 if (err < 0) { 7224 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING, 7225 MGMT_STATUS_FAILED); 7226 goto unlock; 7227 } 7228 7229 /* Only trigger an advertising added event if a new instance was 7230 * actually added. 7231 */ 7232 if (hdev->adv_instance_cnt > prev_instance_cnt) 7233 advertising_added(sk, hdev, cp->instance); 7234 7235 hci_dev_set_flag(hdev, HCI_ADVERTISING_INSTANCE); 7236 7237 if (hdev->cur_adv_instance == cp->instance) { 7238 /* If the currently advertised instance is being changed then 7239 * cancel the current advertising and schedule the next 7240 * instance. If there is only one instance then the overridden 7241 * advertising data will be visible right away. 7242 */ 7243 cancel_adv_timeout(hdev); 7244 7245 next_instance = hci_get_next_instance(hdev, cp->instance); 7246 if (next_instance) 7247 schedule_instance = next_instance->instance; 7248 } else if (!hdev->adv_instance_timeout) { 7249 /* Immediately advertise the new instance if no other 7250 * instance is currently being advertised. 7251 */ 7252 schedule_instance = cp->instance; 7253 } 7254 7255 /* If the HCI_ADVERTISING flag is set or the device isn't powered or 7256 * there is no instance to be advertised then we have no HCI 7257 * communication to make. Simply return. 7258 */ 7259 if (!hdev_is_powered(hdev) || 7260 hci_dev_test_flag(hdev, HCI_ADVERTISING) || 7261 !schedule_instance) { 7262 rp.instance = cp->instance; 7263 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_ADVERTISING, 7264 MGMT_STATUS_SUCCESS, &rp, sizeof(rp)); 7265 goto unlock; 7266 } 7267 7268 /* We're good to go, update advertising data, parameters, and start 7269 * advertising. 7270 */ 7271 cmd = mgmt_pending_add(sk, MGMT_OP_ADD_ADVERTISING, hdev, data, 7272 data_len); 7273 if (!cmd) { 7274 err = -ENOMEM; 7275 goto unlock; 7276 } 7277 7278 hci_req_init(&req, hdev); 7279 7280 err = schedule_adv_instance(&req, schedule_instance, true); 7281 7282 if (!err) 7283 err = hci_req_run(&req, add_advertising_complete); 7284 7285 if (err < 0) 7286 mgmt_pending_remove(cmd); 7287 7288 unlock: 7289 hci_dev_unlock(hdev); 7290 7291 return err; 7292 } 7293 7294 static void remove_advertising_complete(struct hci_dev *hdev, u8 status, 7295 u16 opcode) 7296 { 7297 struct mgmt_pending_cmd *cmd; 7298 struct mgmt_cp_remove_advertising *cp; 7299 struct mgmt_rp_remove_advertising rp; 7300 7301 BT_DBG("status %d", status); 7302 7303 hci_dev_lock(hdev); 7304 7305 /* A failure status here only means that we failed to disable 7306 * advertising. Otherwise, the advertising instance has been removed, 7307 * so report success. 7308 */ 7309 cmd = pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev); 7310 if (!cmd) 7311 goto unlock; 7312 7313 cp = cmd->param; 7314 rp.instance = cp->instance; 7315 7316 mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, MGMT_STATUS_SUCCESS, 7317 &rp, sizeof(rp)); 7318 mgmt_pending_remove(cmd); 7319 7320 unlock: 7321 hci_dev_unlock(hdev); 7322 } 7323 7324 static int remove_advertising(struct sock *sk, struct hci_dev *hdev, 7325 void *data, u16 data_len) 7326 { 7327 struct mgmt_cp_remove_advertising *cp = data; 7328 struct mgmt_rp_remove_advertising rp; 7329 struct mgmt_pending_cmd *cmd; 7330 struct hci_request req; 7331 int err; 7332 7333 BT_DBG("%s", hdev->name); 7334 7335 hci_dev_lock(hdev); 7336 7337 if (cp->instance && !hci_find_adv_instance(hdev, cp->instance)) { 7338 err = mgmt_cmd_status(sk, hdev->id, 7339 MGMT_OP_REMOVE_ADVERTISING, 7340 MGMT_STATUS_INVALID_PARAMS); 7341 goto unlock; 7342 } 7343 7344 if (pending_find(MGMT_OP_ADD_ADVERTISING, hdev) || 7345 pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev) || 7346 pending_find(MGMT_OP_SET_LE, hdev)) { 7347 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_ADVERTISING, 7348 MGMT_STATUS_BUSY); 7349 goto unlock; 7350 } 7351 7352 if (!hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE)) { 7353 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_ADVERTISING, 7354 MGMT_STATUS_INVALID_PARAMS); 7355 goto unlock; 7356 } 7357 7358 hci_req_init(&req, hdev); 7359 7360 clear_adv_instance(hdev, &req, cp->instance, true); 7361 7362 if (list_empty(&hdev->adv_instances)) 7363 disable_advertising(&req); 7364 7365 /* If no HCI commands have been collected so far or the HCI_ADVERTISING 7366 * flag is set or the device isn't powered then we have no HCI 7367 * communication to make. Simply return. 7368 */ 7369 if (skb_queue_empty(&req.cmd_q) || 7370 !hdev_is_powered(hdev) || 7371 hci_dev_test_flag(hdev, HCI_ADVERTISING)) { 7372 rp.instance = cp->instance; 7373 err = mgmt_cmd_complete(sk, hdev->id, 7374 MGMT_OP_REMOVE_ADVERTISING, 7375 MGMT_STATUS_SUCCESS, &rp, sizeof(rp)); 7376 goto unlock; 7377 } 7378 7379 cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_ADVERTISING, hdev, data, 7380 data_len); 7381 if (!cmd) { 7382 err = -ENOMEM; 7383 goto unlock; 7384 } 7385 7386 err = hci_req_run(&req, remove_advertising_complete); 7387 if (err < 0) 7388 mgmt_pending_remove(cmd); 7389 7390 unlock: 7391 hci_dev_unlock(hdev); 7392 7393 return err; 7394 } 7395 7396 static const struct hci_mgmt_handler mgmt_handlers[] = { 7397 { NULL }, /* 0x0000 (no command) */ 7398 { read_version, MGMT_READ_VERSION_SIZE, 7399 HCI_MGMT_NO_HDEV | 7400 HCI_MGMT_UNTRUSTED }, 7401 { read_commands, MGMT_READ_COMMANDS_SIZE, 7402 HCI_MGMT_NO_HDEV | 7403 HCI_MGMT_UNTRUSTED }, 7404 { read_index_list, MGMT_READ_INDEX_LIST_SIZE, 7405 HCI_MGMT_NO_HDEV | 7406 HCI_MGMT_UNTRUSTED }, 7407 { read_controller_info, MGMT_READ_INFO_SIZE, 7408 HCI_MGMT_UNTRUSTED }, 7409 { set_powered, MGMT_SETTING_SIZE }, 7410 { set_discoverable, MGMT_SET_DISCOVERABLE_SIZE }, 7411 { set_connectable, MGMT_SETTING_SIZE }, 7412 { set_fast_connectable, MGMT_SETTING_SIZE }, 7413 { set_bondable, MGMT_SETTING_SIZE }, 7414 { set_link_security, MGMT_SETTING_SIZE }, 7415 { set_ssp, MGMT_SETTING_SIZE }, 7416 { set_hs, MGMT_SETTING_SIZE }, 7417 { set_le, MGMT_SETTING_SIZE }, 7418 { set_dev_class, MGMT_SET_DEV_CLASS_SIZE }, 7419 { set_local_name, MGMT_SET_LOCAL_NAME_SIZE }, 7420 { add_uuid, MGMT_ADD_UUID_SIZE }, 7421 { remove_uuid, MGMT_REMOVE_UUID_SIZE }, 7422 { load_link_keys, MGMT_LOAD_LINK_KEYS_SIZE, 7423 HCI_MGMT_VAR_LEN }, 7424 { load_long_term_keys, MGMT_LOAD_LONG_TERM_KEYS_SIZE, 7425 HCI_MGMT_VAR_LEN }, 7426 { disconnect, MGMT_DISCONNECT_SIZE }, 7427 { get_connections, MGMT_GET_CONNECTIONS_SIZE }, 7428 { pin_code_reply, MGMT_PIN_CODE_REPLY_SIZE }, 7429 { pin_code_neg_reply, MGMT_PIN_CODE_NEG_REPLY_SIZE }, 7430 { set_io_capability, MGMT_SET_IO_CAPABILITY_SIZE }, 7431 { pair_device, MGMT_PAIR_DEVICE_SIZE }, 7432 { cancel_pair_device, MGMT_CANCEL_PAIR_DEVICE_SIZE }, 7433 { unpair_device, MGMT_UNPAIR_DEVICE_SIZE }, 7434 { user_confirm_reply, MGMT_USER_CONFIRM_REPLY_SIZE }, 7435 { user_confirm_neg_reply, MGMT_USER_CONFIRM_NEG_REPLY_SIZE }, 7436 { user_passkey_reply, MGMT_USER_PASSKEY_REPLY_SIZE }, 7437 { user_passkey_neg_reply, MGMT_USER_PASSKEY_NEG_REPLY_SIZE }, 7438 { read_local_oob_data, MGMT_READ_LOCAL_OOB_DATA_SIZE }, 7439 { add_remote_oob_data, MGMT_ADD_REMOTE_OOB_DATA_SIZE, 7440 HCI_MGMT_VAR_LEN }, 7441 { remove_remote_oob_data, MGMT_REMOVE_REMOTE_OOB_DATA_SIZE }, 7442 { start_discovery, MGMT_START_DISCOVERY_SIZE }, 7443 { stop_discovery, MGMT_STOP_DISCOVERY_SIZE }, 7444 { confirm_name, MGMT_CONFIRM_NAME_SIZE }, 7445 { block_device, MGMT_BLOCK_DEVICE_SIZE }, 7446 { unblock_device, MGMT_UNBLOCK_DEVICE_SIZE }, 7447 { set_device_id, MGMT_SET_DEVICE_ID_SIZE }, 7448 { set_advertising, MGMT_SETTING_SIZE }, 7449 { set_bredr, MGMT_SETTING_SIZE }, 7450 { set_static_address, MGMT_SET_STATIC_ADDRESS_SIZE }, 7451 { set_scan_params, MGMT_SET_SCAN_PARAMS_SIZE }, 7452 { set_secure_conn, MGMT_SETTING_SIZE }, 7453 { set_debug_keys, MGMT_SETTING_SIZE }, 7454 { set_privacy, MGMT_SET_PRIVACY_SIZE }, 7455 { load_irks, MGMT_LOAD_IRKS_SIZE, 7456 HCI_MGMT_VAR_LEN }, 7457 { get_conn_info, MGMT_GET_CONN_INFO_SIZE }, 7458 { get_clock_info, MGMT_GET_CLOCK_INFO_SIZE }, 7459 { add_device, MGMT_ADD_DEVICE_SIZE }, 7460 { remove_device, MGMT_REMOVE_DEVICE_SIZE }, 7461 { load_conn_param, MGMT_LOAD_CONN_PARAM_SIZE, 7462 HCI_MGMT_VAR_LEN }, 7463 { read_unconf_index_list, MGMT_READ_UNCONF_INDEX_LIST_SIZE, 7464 HCI_MGMT_NO_HDEV | 7465 HCI_MGMT_UNTRUSTED }, 7466 { read_config_info, MGMT_READ_CONFIG_INFO_SIZE, 7467 HCI_MGMT_UNCONFIGURED | 7468 HCI_MGMT_UNTRUSTED }, 7469 { set_external_config, MGMT_SET_EXTERNAL_CONFIG_SIZE, 7470 HCI_MGMT_UNCONFIGURED }, 7471 { set_public_address, MGMT_SET_PUBLIC_ADDRESS_SIZE, 7472 HCI_MGMT_UNCONFIGURED }, 7473 { start_service_discovery, MGMT_START_SERVICE_DISCOVERY_SIZE, 7474 HCI_MGMT_VAR_LEN }, 7475 { read_local_oob_ext_data, MGMT_READ_LOCAL_OOB_EXT_DATA_SIZE }, 7476 { read_ext_index_list, MGMT_READ_EXT_INDEX_LIST_SIZE, 7477 HCI_MGMT_NO_HDEV | 7478 HCI_MGMT_UNTRUSTED }, 7479 { read_adv_features, MGMT_READ_ADV_FEATURES_SIZE }, 7480 { add_advertising, MGMT_ADD_ADVERTISING_SIZE, 7481 HCI_MGMT_VAR_LEN }, 7482 { remove_advertising, MGMT_REMOVE_ADVERTISING_SIZE }, 7483 }; 7484 7485 void mgmt_index_added(struct hci_dev *hdev) 7486 { 7487 struct mgmt_ev_ext_index ev; 7488 7489 if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) 7490 return; 7491 7492 switch (hdev->dev_type) { 7493 case HCI_BREDR: 7494 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { 7495 mgmt_index_event(MGMT_EV_UNCONF_INDEX_ADDED, hdev, 7496 NULL, 0, HCI_MGMT_UNCONF_INDEX_EVENTS); 7497 ev.type = 0x01; 7498 } else { 7499 mgmt_index_event(MGMT_EV_INDEX_ADDED, hdev, NULL, 0, 7500 HCI_MGMT_INDEX_EVENTS); 7501 ev.type = 0x00; 7502 } 7503 break; 7504 case HCI_AMP: 7505 ev.type = 0x02; 7506 break; 7507 default: 7508 return; 7509 } 7510 7511 ev.bus = hdev->bus; 7512 7513 mgmt_index_event(MGMT_EV_EXT_INDEX_ADDED, hdev, &ev, sizeof(ev), 7514 HCI_MGMT_EXT_INDEX_EVENTS); 7515 } 7516 7517 void mgmt_index_removed(struct hci_dev *hdev) 7518 { 7519 struct mgmt_ev_ext_index ev; 7520 u8 status = MGMT_STATUS_INVALID_INDEX; 7521 7522 if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) 7523 return; 7524 7525 switch (hdev->dev_type) { 7526 case HCI_BREDR: 7527 mgmt_pending_foreach(0, hdev, cmd_complete_rsp, &status); 7528 7529 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { 7530 mgmt_index_event(MGMT_EV_UNCONF_INDEX_REMOVED, hdev, 7531 NULL, 0, HCI_MGMT_UNCONF_INDEX_EVENTS); 7532 ev.type = 0x01; 7533 } else { 7534 mgmt_index_event(MGMT_EV_INDEX_REMOVED, hdev, NULL, 0, 7535 HCI_MGMT_INDEX_EVENTS); 7536 ev.type = 0x00; 7537 } 7538 break; 7539 case HCI_AMP: 7540 ev.type = 0x02; 7541 break; 7542 default: 7543 return; 7544 } 7545 7546 ev.bus = hdev->bus; 7547 7548 mgmt_index_event(MGMT_EV_EXT_INDEX_REMOVED, hdev, &ev, sizeof(ev), 7549 HCI_MGMT_EXT_INDEX_EVENTS); 7550 } 7551 7552 /* This function requires the caller holds hdev->lock */ 7553 static void restart_le_actions(struct hci_request *req) 7554 { 7555 struct hci_dev *hdev = req->hdev; 7556 struct hci_conn_params *p; 7557 7558 list_for_each_entry(p, &hdev->le_conn_params, list) { 7559 /* Needed for AUTO_OFF case where might not "really" 7560 * have been powered off. 7561 */ 7562 list_del_init(&p->action); 7563 7564 switch (p->auto_connect) { 7565 case HCI_AUTO_CONN_DIRECT: 7566 case HCI_AUTO_CONN_ALWAYS: 7567 list_add(&p->action, &hdev->pend_le_conns); 7568 break; 7569 case HCI_AUTO_CONN_REPORT: 7570 list_add(&p->action, &hdev->pend_le_reports); 7571 break; 7572 default: 7573 break; 7574 } 7575 } 7576 7577 __hci_update_background_scan(req); 7578 } 7579 7580 static void powered_complete(struct hci_dev *hdev, u8 status, u16 opcode) 7581 { 7582 struct cmd_lookup match = { NULL, hdev }; 7583 7584 BT_DBG("status 0x%02x", status); 7585 7586 if (!status) { 7587 /* Register the available SMP channels (BR/EDR and LE) only 7588 * when successfully powering on the controller. This late 7589 * registration is required so that LE SMP can clearly 7590 * decide if the public address or static address is used. 7591 */ 7592 smp_register(hdev); 7593 } 7594 7595 hci_dev_lock(hdev); 7596 7597 mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match); 7598 7599 new_settings(hdev, match.sk); 7600 7601 hci_dev_unlock(hdev); 7602 7603 if (match.sk) 7604 sock_put(match.sk); 7605 } 7606 7607 static int powered_update_hci(struct hci_dev *hdev) 7608 { 7609 struct hci_request req; 7610 struct adv_info *adv_instance; 7611 u8 link_sec; 7612 7613 hci_req_init(&req, hdev); 7614 7615 if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && 7616 !lmp_host_ssp_capable(hdev)) { 7617 u8 mode = 0x01; 7618 7619 hci_req_add(&req, HCI_OP_WRITE_SSP_MODE, sizeof(mode), &mode); 7620 7621 if (bredr_sc_enabled(hdev) && !lmp_host_sc_capable(hdev)) { 7622 u8 support = 0x01; 7623 7624 hci_req_add(&req, HCI_OP_WRITE_SC_SUPPORT, 7625 sizeof(support), &support); 7626 } 7627 } 7628 7629 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED) && 7630 lmp_bredr_capable(hdev)) { 7631 struct hci_cp_write_le_host_supported cp; 7632 7633 cp.le = 0x01; 7634 cp.simul = 0x00; 7635 7636 /* Check first if we already have the right 7637 * host state (host features set) 7638 */ 7639 if (cp.le != lmp_host_le_capable(hdev) || 7640 cp.simul != lmp_host_le_br_capable(hdev)) 7641 hci_req_add(&req, HCI_OP_WRITE_LE_HOST_SUPPORTED, 7642 sizeof(cp), &cp); 7643 } 7644 7645 if (lmp_le_capable(hdev)) { 7646 /* Make sure the controller has a good default for 7647 * advertising data. This also applies to the case 7648 * where BR/EDR was toggled during the AUTO_OFF phase. 7649 */ 7650 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED) && 7651 (hci_dev_test_flag(hdev, HCI_ADVERTISING) || 7652 !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE))) { 7653 update_adv_data(&req); 7654 update_scan_rsp_data(&req); 7655 } 7656 7657 if (hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) && 7658 hdev->cur_adv_instance == 0x00 && 7659 !list_empty(&hdev->adv_instances)) { 7660 adv_instance = list_first_entry(&hdev->adv_instances, 7661 struct adv_info, list); 7662 hdev->cur_adv_instance = adv_instance->instance; 7663 } 7664 7665 if (hci_dev_test_flag(hdev, HCI_ADVERTISING)) 7666 enable_advertising(&req); 7667 else if (hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) && 7668 hdev->cur_adv_instance) 7669 schedule_adv_instance(&req, hdev->cur_adv_instance, 7670 true); 7671 7672 restart_le_actions(&req); 7673 } 7674 7675 link_sec = hci_dev_test_flag(hdev, HCI_LINK_SECURITY); 7676 if (link_sec != test_bit(HCI_AUTH, &hdev->flags)) 7677 hci_req_add(&req, HCI_OP_WRITE_AUTH_ENABLE, 7678 sizeof(link_sec), &link_sec); 7679 7680 if (lmp_bredr_capable(hdev)) { 7681 if (hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE)) 7682 write_fast_connectable(&req, true); 7683 else 7684 write_fast_connectable(&req, false); 7685 __hci_update_page_scan(&req); 7686 update_class(&req); 7687 update_name(&req); 7688 update_eir(&req); 7689 } 7690 7691 return hci_req_run(&req, powered_complete); 7692 } 7693 7694 int mgmt_powered(struct hci_dev *hdev, u8 powered) 7695 { 7696 struct cmd_lookup match = { NULL, hdev }; 7697 u8 status, zero_cod[] = { 0, 0, 0 }; 7698 int err; 7699 7700 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 7701 return 0; 7702 7703 if (powered) { 7704 if (powered_update_hci(hdev) == 0) 7705 return 0; 7706 7707 mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, 7708 &match); 7709 goto new_settings; 7710 } 7711 7712 mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match); 7713 7714 /* If the power off is because of hdev unregistration let 7715 * use the appropriate INVALID_INDEX status. Otherwise use 7716 * NOT_POWERED. We cover both scenarios here since later in 7717 * mgmt_index_removed() any hci_conn callbacks will have already 7718 * been triggered, potentially causing misleading DISCONNECTED 7719 * status responses. 7720 */ 7721 if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) 7722 status = MGMT_STATUS_INVALID_INDEX; 7723 else 7724 status = MGMT_STATUS_NOT_POWERED; 7725 7726 mgmt_pending_foreach(0, hdev, cmd_complete_rsp, &status); 7727 7728 if (memcmp(hdev->dev_class, zero_cod, sizeof(zero_cod)) != 0) 7729 mgmt_generic_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev, 7730 zero_cod, sizeof(zero_cod), NULL); 7731 7732 new_settings: 7733 err = new_settings(hdev, match.sk); 7734 7735 if (match.sk) 7736 sock_put(match.sk); 7737 7738 return err; 7739 } 7740 7741 void mgmt_set_powered_failed(struct hci_dev *hdev, int err) 7742 { 7743 struct mgmt_pending_cmd *cmd; 7744 u8 status; 7745 7746 cmd = pending_find(MGMT_OP_SET_POWERED, hdev); 7747 if (!cmd) 7748 return; 7749 7750 if (err == -ERFKILL) 7751 status = MGMT_STATUS_RFKILLED; 7752 else 7753 status = MGMT_STATUS_FAILED; 7754 7755 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_POWERED, status); 7756 7757 mgmt_pending_remove(cmd); 7758 } 7759 7760 void mgmt_discoverable_timeout(struct hci_dev *hdev) 7761 { 7762 struct hci_request req; 7763 7764 hci_dev_lock(hdev); 7765 7766 /* When discoverable timeout triggers, then just make sure 7767 * the limited discoverable flag is cleared. Even in the case 7768 * of a timeout triggered from general discoverable, it is 7769 * safe to unconditionally clear the flag. 7770 */ 7771 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); 7772 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); 7773 7774 hci_req_init(&req, hdev); 7775 if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { 7776 u8 scan = SCAN_PAGE; 7777 hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 7778 sizeof(scan), &scan); 7779 } 7780 update_class(&req); 7781 7782 /* Advertising instances don't use the global discoverable setting, so 7783 * only update AD if advertising was enabled using Set Advertising. 7784 */ 7785 if (hci_dev_test_flag(hdev, HCI_ADVERTISING)) 7786 update_adv_data(&req); 7787 7788 hci_req_run(&req, NULL); 7789 7790 hdev->discov_timeout = 0; 7791 7792 new_settings(hdev, NULL); 7793 7794 hci_dev_unlock(hdev); 7795 } 7796 7797 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 7798 bool persistent) 7799 { 7800 struct mgmt_ev_new_link_key ev; 7801 7802 memset(&ev, 0, sizeof(ev)); 7803 7804 ev.store_hint = persistent; 7805 bacpy(&ev.key.addr.bdaddr, &key->bdaddr); 7806 ev.key.addr.type = BDADDR_BREDR; 7807 ev.key.type = key->type; 7808 memcpy(ev.key.val, key->val, HCI_LINK_KEY_SIZE); 7809 ev.key.pin_len = key->pin_len; 7810 7811 mgmt_event(MGMT_EV_NEW_LINK_KEY, hdev, &ev, sizeof(ev), NULL); 7812 } 7813 7814 static u8 mgmt_ltk_type(struct smp_ltk *ltk) 7815 { 7816 switch (ltk->type) { 7817 case SMP_LTK: 7818 case SMP_LTK_SLAVE: 7819 if (ltk->authenticated) 7820 return MGMT_LTK_AUTHENTICATED; 7821 return MGMT_LTK_UNAUTHENTICATED; 7822 case SMP_LTK_P256: 7823 if (ltk->authenticated) 7824 return MGMT_LTK_P256_AUTH; 7825 return MGMT_LTK_P256_UNAUTH; 7826 case SMP_LTK_P256_DEBUG: 7827 return MGMT_LTK_P256_DEBUG; 7828 } 7829 7830 return MGMT_LTK_UNAUTHENTICATED; 7831 } 7832 7833 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent) 7834 { 7835 struct mgmt_ev_new_long_term_key ev; 7836 7837 memset(&ev, 0, sizeof(ev)); 7838 7839 /* Devices using resolvable or non-resolvable random addresses 7840 * without providing an identity resolving key don't require 7841 * to store long term keys. Their addresses will change the 7842 * next time around. 7843 * 7844 * Only when a remote device provides an identity address 7845 * make sure the long term key is stored. If the remote 7846 * identity is known, the long term keys are internally 7847 * mapped to the identity address. So allow static random 7848 * and public addresses here. 7849 */ 7850 if (key->bdaddr_type == ADDR_LE_DEV_RANDOM && 7851 (key->bdaddr.b[5] & 0xc0) != 0xc0) 7852 ev.store_hint = 0x00; 7853 else 7854 ev.store_hint = persistent; 7855 7856 bacpy(&ev.key.addr.bdaddr, &key->bdaddr); 7857 ev.key.addr.type = link_to_bdaddr(LE_LINK, key->bdaddr_type); 7858 ev.key.type = mgmt_ltk_type(key); 7859 ev.key.enc_size = key->enc_size; 7860 ev.key.ediv = key->ediv; 7861 ev.key.rand = key->rand; 7862 7863 if (key->type == SMP_LTK) 7864 ev.key.master = 1; 7865 7866 /* Make sure we copy only the significant bytes based on the 7867 * encryption key size, and set the rest of the value to zeroes. 7868 */ 7869 memcpy(ev.key.val, key->val, key->enc_size); 7870 memset(ev.key.val + key->enc_size, 0, 7871 sizeof(ev.key.val) - key->enc_size); 7872 7873 mgmt_event(MGMT_EV_NEW_LONG_TERM_KEY, hdev, &ev, sizeof(ev), NULL); 7874 } 7875 7876 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk) 7877 { 7878 struct mgmt_ev_new_irk ev; 7879 7880 memset(&ev, 0, sizeof(ev)); 7881 7882 /* For identity resolving keys from devices that are already 7883 * using a public address or static random address, do not 7884 * ask for storing this key. The identity resolving key really 7885 * is only mandatory for devices using resolvable random 7886 * addresses. 7887 * 7888 * Storing all identity resolving keys has the downside that 7889 * they will be also loaded on next boot of they system. More 7890 * identity resolving keys, means more time during scanning is 7891 * needed to actually resolve these addresses. 7892 */ 7893 if (bacmp(&irk->rpa, BDADDR_ANY)) 7894 ev.store_hint = 0x01; 7895 else 7896 ev.store_hint = 0x00; 7897 7898 bacpy(&ev.rpa, &irk->rpa); 7899 bacpy(&ev.irk.addr.bdaddr, &irk->bdaddr); 7900 ev.irk.addr.type = link_to_bdaddr(LE_LINK, irk->addr_type); 7901 memcpy(ev.irk.val, irk->val, sizeof(irk->val)); 7902 7903 mgmt_event(MGMT_EV_NEW_IRK, hdev, &ev, sizeof(ev), NULL); 7904 } 7905 7906 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 7907 bool persistent) 7908 { 7909 struct mgmt_ev_new_csrk ev; 7910 7911 memset(&ev, 0, sizeof(ev)); 7912 7913 /* Devices using resolvable or non-resolvable random addresses 7914 * without providing an identity resolving key don't require 7915 * to store signature resolving keys. Their addresses will change 7916 * the next time around. 7917 * 7918 * Only when a remote device provides an identity address 7919 * make sure the signature resolving key is stored. So allow 7920 * static random and public addresses here. 7921 */ 7922 if (csrk->bdaddr_type == ADDR_LE_DEV_RANDOM && 7923 (csrk->bdaddr.b[5] & 0xc0) != 0xc0) 7924 ev.store_hint = 0x00; 7925 else 7926 ev.store_hint = persistent; 7927 7928 bacpy(&ev.key.addr.bdaddr, &csrk->bdaddr); 7929 ev.key.addr.type = link_to_bdaddr(LE_LINK, csrk->bdaddr_type); 7930 ev.key.type = csrk->type; 7931 memcpy(ev.key.val, csrk->val, sizeof(csrk->val)); 7932 7933 mgmt_event(MGMT_EV_NEW_CSRK, hdev, &ev, sizeof(ev), NULL); 7934 } 7935 7936 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 7937 u8 bdaddr_type, u8 store_hint, u16 min_interval, 7938 u16 max_interval, u16 latency, u16 timeout) 7939 { 7940 struct mgmt_ev_new_conn_param ev; 7941 7942 if (!hci_is_identity_address(bdaddr, bdaddr_type)) 7943 return; 7944 7945 memset(&ev, 0, sizeof(ev)); 7946 bacpy(&ev.addr.bdaddr, bdaddr); 7947 ev.addr.type = link_to_bdaddr(LE_LINK, bdaddr_type); 7948 ev.store_hint = store_hint; 7949 ev.min_interval = cpu_to_le16(min_interval); 7950 ev.max_interval = cpu_to_le16(max_interval); 7951 ev.latency = cpu_to_le16(latency); 7952 ev.timeout = cpu_to_le16(timeout); 7953 7954 mgmt_event(MGMT_EV_NEW_CONN_PARAM, hdev, &ev, sizeof(ev), NULL); 7955 } 7956 7957 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 7958 u32 flags, u8 *name, u8 name_len) 7959 { 7960 char buf[512]; 7961 struct mgmt_ev_device_connected *ev = (void *) buf; 7962 u16 eir_len = 0; 7963 7964 bacpy(&ev->addr.bdaddr, &conn->dst); 7965 ev->addr.type = link_to_bdaddr(conn->type, conn->dst_type); 7966 7967 ev->flags = __cpu_to_le32(flags); 7968 7969 /* We must ensure that the EIR Data fields are ordered and 7970 * unique. Keep it simple for now and avoid the problem by not 7971 * adding any BR/EDR data to the LE adv. 7972 */ 7973 if (conn->le_adv_data_len > 0) { 7974 memcpy(&ev->eir[eir_len], 7975 conn->le_adv_data, conn->le_adv_data_len); 7976 eir_len = conn->le_adv_data_len; 7977 } else { 7978 if (name_len > 0) 7979 eir_len = eir_append_data(ev->eir, 0, EIR_NAME_COMPLETE, 7980 name, name_len); 7981 7982 if (memcmp(conn->dev_class, "\0\0\0", 3) != 0) 7983 eir_len = eir_append_data(ev->eir, eir_len, 7984 EIR_CLASS_OF_DEV, 7985 conn->dev_class, 3); 7986 } 7987 7988 ev->eir_len = cpu_to_le16(eir_len); 7989 7990 mgmt_event(MGMT_EV_DEVICE_CONNECTED, hdev, buf, 7991 sizeof(*ev) + eir_len, NULL); 7992 } 7993 7994 static void disconnect_rsp(struct mgmt_pending_cmd *cmd, void *data) 7995 { 7996 struct sock **sk = data; 7997 7998 cmd->cmd_complete(cmd, 0); 7999 8000 *sk = cmd->sk; 8001 sock_hold(*sk); 8002 8003 mgmt_pending_remove(cmd); 8004 } 8005 8006 static void unpair_device_rsp(struct mgmt_pending_cmd *cmd, void *data) 8007 { 8008 struct hci_dev *hdev = data; 8009 struct mgmt_cp_unpair_device *cp = cmd->param; 8010 8011 device_unpaired(hdev, &cp->addr.bdaddr, cp->addr.type, cmd->sk); 8012 8013 cmd->cmd_complete(cmd, 0); 8014 mgmt_pending_remove(cmd); 8015 } 8016 8017 bool mgmt_powering_down(struct hci_dev *hdev) 8018 { 8019 struct mgmt_pending_cmd *cmd; 8020 struct mgmt_mode *cp; 8021 8022 cmd = pending_find(MGMT_OP_SET_POWERED, hdev); 8023 if (!cmd) 8024 return false; 8025 8026 cp = cmd->param; 8027 if (!cp->val) 8028 return true; 8029 8030 return false; 8031 } 8032 8033 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 8034 u8 link_type, u8 addr_type, u8 reason, 8035 bool mgmt_connected) 8036 { 8037 struct mgmt_ev_device_disconnected ev; 8038 struct sock *sk = NULL; 8039 8040 /* The connection is still in hci_conn_hash so test for 1 8041 * instead of 0 to know if this is the last one. 8042 */ 8043 if (mgmt_powering_down(hdev) && hci_conn_count(hdev) == 1) { 8044 cancel_delayed_work(&hdev->power_off); 8045 queue_work(hdev->req_workqueue, &hdev->power_off.work); 8046 } 8047 8048 if (!mgmt_connected) 8049 return; 8050 8051 if (link_type != ACL_LINK && link_type != LE_LINK) 8052 return; 8053 8054 mgmt_pending_foreach(MGMT_OP_DISCONNECT, hdev, disconnect_rsp, &sk); 8055 8056 bacpy(&ev.addr.bdaddr, bdaddr); 8057 ev.addr.type = link_to_bdaddr(link_type, addr_type); 8058 ev.reason = reason; 8059 8060 mgmt_event(MGMT_EV_DEVICE_DISCONNECTED, hdev, &ev, sizeof(ev), sk); 8061 8062 if (sk) 8063 sock_put(sk); 8064 8065 mgmt_pending_foreach(MGMT_OP_UNPAIR_DEVICE, hdev, unpair_device_rsp, 8066 hdev); 8067 } 8068 8069 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 8070 u8 link_type, u8 addr_type, u8 status) 8071 { 8072 u8 bdaddr_type = link_to_bdaddr(link_type, addr_type); 8073 struct mgmt_cp_disconnect *cp; 8074 struct mgmt_pending_cmd *cmd; 8075 8076 mgmt_pending_foreach(MGMT_OP_UNPAIR_DEVICE, hdev, unpair_device_rsp, 8077 hdev); 8078 8079 cmd = pending_find(MGMT_OP_DISCONNECT, hdev); 8080 if (!cmd) 8081 return; 8082 8083 cp = cmd->param; 8084 8085 if (bacmp(bdaddr, &cp->addr.bdaddr)) 8086 return; 8087 8088 if (cp->addr.type != bdaddr_type) 8089 return; 8090 8091 cmd->cmd_complete(cmd, mgmt_status(status)); 8092 mgmt_pending_remove(cmd); 8093 } 8094 8095 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 8096 u8 addr_type, u8 status) 8097 { 8098 struct mgmt_ev_connect_failed ev; 8099 8100 /* The connection is still in hci_conn_hash so test for 1 8101 * instead of 0 to know if this is the last one. 8102 */ 8103 if (mgmt_powering_down(hdev) && hci_conn_count(hdev) == 1) { 8104 cancel_delayed_work(&hdev->power_off); 8105 queue_work(hdev->req_workqueue, &hdev->power_off.work); 8106 } 8107 8108 bacpy(&ev.addr.bdaddr, bdaddr); 8109 ev.addr.type = link_to_bdaddr(link_type, addr_type); 8110 ev.status = mgmt_status(status); 8111 8112 mgmt_event(MGMT_EV_CONNECT_FAILED, hdev, &ev, sizeof(ev), NULL); 8113 } 8114 8115 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure) 8116 { 8117 struct mgmt_ev_pin_code_request ev; 8118 8119 bacpy(&ev.addr.bdaddr, bdaddr); 8120 ev.addr.type = BDADDR_BREDR; 8121 ev.secure = secure; 8122 8123 mgmt_event(MGMT_EV_PIN_CODE_REQUEST, hdev, &ev, sizeof(ev), NULL); 8124 } 8125 8126 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 8127 u8 status) 8128 { 8129 struct mgmt_pending_cmd *cmd; 8130 8131 cmd = pending_find(MGMT_OP_PIN_CODE_REPLY, hdev); 8132 if (!cmd) 8133 return; 8134 8135 cmd->cmd_complete(cmd, mgmt_status(status)); 8136 mgmt_pending_remove(cmd); 8137 } 8138 8139 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 8140 u8 status) 8141 { 8142 struct mgmt_pending_cmd *cmd; 8143 8144 cmd = pending_find(MGMT_OP_PIN_CODE_NEG_REPLY, hdev); 8145 if (!cmd) 8146 return; 8147 8148 cmd->cmd_complete(cmd, mgmt_status(status)); 8149 mgmt_pending_remove(cmd); 8150 } 8151 8152 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 8153 u8 link_type, u8 addr_type, u32 value, 8154 u8 confirm_hint) 8155 { 8156 struct mgmt_ev_user_confirm_request ev; 8157 8158 BT_DBG("%s", hdev->name); 8159 8160 bacpy(&ev.addr.bdaddr, bdaddr); 8161 ev.addr.type = link_to_bdaddr(link_type, addr_type); 8162 ev.confirm_hint = confirm_hint; 8163 ev.value = cpu_to_le32(value); 8164 8165 return mgmt_event(MGMT_EV_USER_CONFIRM_REQUEST, hdev, &ev, sizeof(ev), 8166 NULL); 8167 } 8168 8169 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 8170 u8 link_type, u8 addr_type) 8171 { 8172 struct mgmt_ev_user_passkey_request ev; 8173 8174 BT_DBG("%s", hdev->name); 8175 8176 bacpy(&ev.addr.bdaddr, bdaddr); 8177 ev.addr.type = link_to_bdaddr(link_type, addr_type); 8178 8179 return mgmt_event(MGMT_EV_USER_PASSKEY_REQUEST, hdev, &ev, sizeof(ev), 8180 NULL); 8181 } 8182 8183 static int user_pairing_resp_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 8184 u8 link_type, u8 addr_type, u8 status, 8185 u8 opcode) 8186 { 8187 struct mgmt_pending_cmd *cmd; 8188 8189 cmd = pending_find(opcode, hdev); 8190 if (!cmd) 8191 return -ENOENT; 8192 8193 cmd->cmd_complete(cmd, mgmt_status(status)); 8194 mgmt_pending_remove(cmd); 8195 8196 return 0; 8197 } 8198 8199 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 8200 u8 link_type, u8 addr_type, u8 status) 8201 { 8202 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type, 8203 status, MGMT_OP_USER_CONFIRM_REPLY); 8204 } 8205 8206 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 8207 u8 link_type, u8 addr_type, u8 status) 8208 { 8209 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type, 8210 status, 8211 MGMT_OP_USER_CONFIRM_NEG_REPLY); 8212 } 8213 8214 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 8215 u8 link_type, u8 addr_type, u8 status) 8216 { 8217 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type, 8218 status, MGMT_OP_USER_PASSKEY_REPLY); 8219 } 8220 8221 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 8222 u8 link_type, u8 addr_type, u8 status) 8223 { 8224 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type, 8225 status, 8226 MGMT_OP_USER_PASSKEY_NEG_REPLY); 8227 } 8228 8229 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 8230 u8 link_type, u8 addr_type, u32 passkey, 8231 u8 entered) 8232 { 8233 struct mgmt_ev_passkey_notify ev; 8234 8235 BT_DBG("%s", hdev->name); 8236 8237 bacpy(&ev.addr.bdaddr, bdaddr); 8238 ev.addr.type = link_to_bdaddr(link_type, addr_type); 8239 ev.passkey = __cpu_to_le32(passkey); 8240 ev.entered = entered; 8241 8242 return mgmt_event(MGMT_EV_PASSKEY_NOTIFY, hdev, &ev, sizeof(ev), NULL); 8243 } 8244 8245 void mgmt_auth_failed(struct hci_conn *conn, u8 hci_status) 8246 { 8247 struct mgmt_ev_auth_failed ev; 8248 struct mgmt_pending_cmd *cmd; 8249 u8 status = mgmt_status(hci_status); 8250 8251 bacpy(&ev.addr.bdaddr, &conn->dst); 8252 ev.addr.type = link_to_bdaddr(conn->type, conn->dst_type); 8253 ev.status = status; 8254 8255 cmd = find_pairing(conn); 8256 8257 mgmt_event(MGMT_EV_AUTH_FAILED, conn->hdev, &ev, sizeof(ev), 8258 cmd ? cmd->sk : NULL); 8259 8260 if (cmd) { 8261 cmd->cmd_complete(cmd, status); 8262 mgmt_pending_remove(cmd); 8263 } 8264 } 8265 8266 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status) 8267 { 8268 struct cmd_lookup match = { NULL, hdev }; 8269 bool changed; 8270 8271 if (status) { 8272 u8 mgmt_err = mgmt_status(status); 8273 mgmt_pending_foreach(MGMT_OP_SET_LINK_SECURITY, hdev, 8274 cmd_status_rsp, &mgmt_err); 8275 return; 8276 } 8277 8278 if (test_bit(HCI_AUTH, &hdev->flags)) 8279 changed = !hci_dev_test_and_set_flag(hdev, HCI_LINK_SECURITY); 8280 else 8281 changed = hci_dev_test_and_clear_flag(hdev, HCI_LINK_SECURITY); 8282 8283 mgmt_pending_foreach(MGMT_OP_SET_LINK_SECURITY, hdev, settings_rsp, 8284 &match); 8285 8286 if (changed) 8287 new_settings(hdev, match.sk); 8288 8289 if (match.sk) 8290 sock_put(match.sk); 8291 } 8292 8293 static void clear_eir(struct hci_request *req) 8294 { 8295 struct hci_dev *hdev = req->hdev; 8296 struct hci_cp_write_eir cp; 8297 8298 if (!lmp_ext_inq_capable(hdev)) 8299 return; 8300 8301 memset(hdev->eir, 0, sizeof(hdev->eir)); 8302 8303 memset(&cp, 0, sizeof(cp)); 8304 8305 hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); 8306 } 8307 8308 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status) 8309 { 8310 struct cmd_lookup match = { NULL, hdev }; 8311 struct hci_request req; 8312 bool changed = false; 8313 8314 if (status) { 8315 u8 mgmt_err = mgmt_status(status); 8316 8317 if (enable && hci_dev_test_and_clear_flag(hdev, 8318 HCI_SSP_ENABLED)) { 8319 hci_dev_clear_flag(hdev, HCI_HS_ENABLED); 8320 new_settings(hdev, NULL); 8321 } 8322 8323 mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, cmd_status_rsp, 8324 &mgmt_err); 8325 return; 8326 } 8327 8328 if (enable) { 8329 changed = !hci_dev_test_and_set_flag(hdev, HCI_SSP_ENABLED); 8330 } else { 8331 changed = hci_dev_test_and_clear_flag(hdev, HCI_SSP_ENABLED); 8332 if (!changed) 8333 changed = hci_dev_test_and_clear_flag(hdev, 8334 HCI_HS_ENABLED); 8335 else 8336 hci_dev_clear_flag(hdev, HCI_HS_ENABLED); 8337 } 8338 8339 mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, settings_rsp, &match); 8340 8341 if (changed) 8342 new_settings(hdev, match.sk); 8343 8344 if (match.sk) 8345 sock_put(match.sk); 8346 8347 hci_req_init(&req, hdev); 8348 8349 if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { 8350 if (hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS)) 8351 hci_req_add(&req, HCI_OP_WRITE_SSP_DEBUG_MODE, 8352 sizeof(enable), &enable); 8353 update_eir(&req); 8354 } else { 8355 clear_eir(&req); 8356 } 8357 8358 hci_req_run(&req, NULL); 8359 } 8360 8361 static void sk_lookup(struct mgmt_pending_cmd *cmd, void *data) 8362 { 8363 struct cmd_lookup *match = data; 8364 8365 if (match->sk == NULL) { 8366 match->sk = cmd->sk; 8367 sock_hold(match->sk); 8368 } 8369 } 8370 8371 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 8372 u8 status) 8373 { 8374 struct cmd_lookup match = { NULL, hdev, mgmt_status(status) }; 8375 8376 mgmt_pending_foreach(MGMT_OP_SET_DEV_CLASS, hdev, sk_lookup, &match); 8377 mgmt_pending_foreach(MGMT_OP_ADD_UUID, hdev, sk_lookup, &match); 8378 mgmt_pending_foreach(MGMT_OP_REMOVE_UUID, hdev, sk_lookup, &match); 8379 8380 if (!status) 8381 mgmt_generic_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev, 8382 dev_class, 3, NULL); 8383 8384 if (match.sk) 8385 sock_put(match.sk); 8386 } 8387 8388 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status) 8389 { 8390 struct mgmt_cp_set_local_name ev; 8391 struct mgmt_pending_cmd *cmd; 8392 8393 if (status) 8394 return; 8395 8396 memset(&ev, 0, sizeof(ev)); 8397 memcpy(ev.name, name, HCI_MAX_NAME_LENGTH); 8398 memcpy(ev.short_name, hdev->short_name, HCI_MAX_SHORT_NAME_LENGTH); 8399 8400 cmd = pending_find(MGMT_OP_SET_LOCAL_NAME, hdev); 8401 if (!cmd) { 8402 memcpy(hdev->dev_name, name, sizeof(hdev->dev_name)); 8403 8404 /* If this is a HCI command related to powering on the 8405 * HCI dev don't send any mgmt signals. 8406 */ 8407 if (pending_find(MGMT_OP_SET_POWERED, hdev)) 8408 return; 8409 } 8410 8411 mgmt_generic_event(MGMT_EV_LOCAL_NAME_CHANGED, hdev, &ev, sizeof(ev), 8412 cmd ? cmd->sk : NULL); 8413 } 8414 8415 static inline bool has_uuid(u8 *uuid, u16 uuid_count, u8 (*uuids)[16]) 8416 { 8417 int i; 8418 8419 for (i = 0; i < uuid_count; i++) { 8420 if (!memcmp(uuid, uuids[i], 16)) 8421 return true; 8422 } 8423 8424 return false; 8425 } 8426 8427 static bool eir_has_uuids(u8 *eir, u16 eir_len, u16 uuid_count, u8 (*uuids)[16]) 8428 { 8429 u16 parsed = 0; 8430 8431 while (parsed < eir_len) { 8432 u8 field_len = eir[0]; 8433 u8 uuid[16]; 8434 int i; 8435 8436 if (field_len == 0) 8437 break; 8438 8439 if (eir_len - parsed < field_len + 1) 8440 break; 8441 8442 switch (eir[1]) { 8443 case EIR_UUID16_ALL: 8444 case EIR_UUID16_SOME: 8445 for (i = 0; i + 3 <= field_len; i += 2) { 8446 memcpy(uuid, bluetooth_base_uuid, 16); 8447 uuid[13] = eir[i + 3]; 8448 uuid[12] = eir[i + 2]; 8449 if (has_uuid(uuid, uuid_count, uuids)) 8450 return true; 8451 } 8452 break; 8453 case EIR_UUID32_ALL: 8454 case EIR_UUID32_SOME: 8455 for (i = 0; i + 5 <= field_len; i += 4) { 8456 memcpy(uuid, bluetooth_base_uuid, 16); 8457 uuid[15] = eir[i + 5]; 8458 uuid[14] = eir[i + 4]; 8459 uuid[13] = eir[i + 3]; 8460 uuid[12] = eir[i + 2]; 8461 if (has_uuid(uuid, uuid_count, uuids)) 8462 return true; 8463 } 8464 break; 8465 case EIR_UUID128_ALL: 8466 case EIR_UUID128_SOME: 8467 for (i = 0; i + 17 <= field_len; i += 16) { 8468 memcpy(uuid, eir + i + 2, 16); 8469 if (has_uuid(uuid, uuid_count, uuids)) 8470 return true; 8471 } 8472 break; 8473 } 8474 8475 parsed += field_len + 1; 8476 eir += field_len + 1; 8477 } 8478 8479 return false; 8480 } 8481 8482 static void restart_le_scan(struct hci_dev *hdev) 8483 { 8484 /* If controller is not scanning we are done. */ 8485 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN)) 8486 return; 8487 8488 if (time_after(jiffies + DISCOV_LE_RESTART_DELAY, 8489 hdev->discovery.scan_start + 8490 hdev->discovery.scan_duration)) 8491 return; 8492 8493 queue_delayed_work(hdev->workqueue, &hdev->le_scan_restart, 8494 DISCOV_LE_RESTART_DELAY); 8495 } 8496 8497 static bool is_filter_match(struct hci_dev *hdev, s8 rssi, u8 *eir, 8498 u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len) 8499 { 8500 /* If a RSSI threshold has been specified, and 8501 * HCI_QUIRK_STRICT_DUPLICATE_FILTER is not set, then all results with 8502 * a RSSI smaller than the RSSI threshold will be dropped. If the quirk 8503 * is set, let it through for further processing, as we might need to 8504 * restart the scan. 8505 * 8506 * For BR/EDR devices (pre 1.2) providing no RSSI during inquiry, 8507 * the results are also dropped. 8508 */ 8509 if (hdev->discovery.rssi != HCI_RSSI_INVALID && 8510 (rssi == HCI_RSSI_INVALID || 8511 (rssi < hdev->discovery.rssi && 8512 !test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks)))) 8513 return false; 8514 8515 if (hdev->discovery.uuid_count != 0) { 8516 /* If a list of UUIDs is provided in filter, results with no 8517 * matching UUID should be dropped. 8518 */ 8519 if (!eir_has_uuids(eir, eir_len, hdev->discovery.uuid_count, 8520 hdev->discovery.uuids) && 8521 !eir_has_uuids(scan_rsp, scan_rsp_len, 8522 hdev->discovery.uuid_count, 8523 hdev->discovery.uuids)) 8524 return false; 8525 } 8526 8527 /* If duplicate filtering does not report RSSI changes, then restart 8528 * scanning to ensure updated result with updated RSSI values. 8529 */ 8530 if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks)) { 8531 restart_le_scan(hdev); 8532 8533 /* Validate RSSI value against the RSSI threshold once more. */ 8534 if (hdev->discovery.rssi != HCI_RSSI_INVALID && 8535 rssi < hdev->discovery.rssi) 8536 return false; 8537 } 8538 8539 return true; 8540 } 8541 8542 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 8543 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 8544 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len) 8545 { 8546 char buf[512]; 8547 struct mgmt_ev_device_found *ev = (void *)buf; 8548 size_t ev_size; 8549 8550 /* Don't send events for a non-kernel initiated discovery. With 8551 * LE one exception is if we have pend_le_reports > 0 in which 8552 * case we're doing passive scanning and want these events. 8553 */ 8554 if (!hci_discovery_active(hdev)) { 8555 if (link_type == ACL_LINK) 8556 return; 8557 if (link_type == LE_LINK && list_empty(&hdev->pend_le_reports)) 8558 return; 8559 } 8560 8561 if (hdev->discovery.result_filtering) { 8562 /* We are using service discovery */ 8563 if (!is_filter_match(hdev, rssi, eir, eir_len, scan_rsp, 8564 scan_rsp_len)) 8565 return; 8566 } 8567 8568 /* Make sure that the buffer is big enough. The 5 extra bytes 8569 * are for the potential CoD field. 8570 */ 8571 if (sizeof(*ev) + eir_len + scan_rsp_len + 5 > sizeof(buf)) 8572 return; 8573 8574 memset(buf, 0, sizeof(buf)); 8575 8576 /* In case of device discovery with BR/EDR devices (pre 1.2), the 8577 * RSSI value was reported as 0 when not available. This behavior 8578 * is kept when using device discovery. This is required for full 8579 * backwards compatibility with the API. 8580 * 8581 * However when using service discovery, the value 127 will be 8582 * returned when the RSSI is not available. 8583 */ 8584 if (rssi == HCI_RSSI_INVALID && !hdev->discovery.report_invalid_rssi && 8585 link_type == ACL_LINK) 8586 rssi = 0; 8587 8588 bacpy(&ev->addr.bdaddr, bdaddr); 8589 ev->addr.type = link_to_bdaddr(link_type, addr_type); 8590 ev->rssi = rssi; 8591 ev->flags = cpu_to_le32(flags); 8592 8593 if (eir_len > 0) 8594 /* Copy EIR or advertising data into event */ 8595 memcpy(ev->eir, eir, eir_len); 8596 8597 if (dev_class && !eir_has_data_type(ev->eir, eir_len, EIR_CLASS_OF_DEV)) 8598 eir_len = eir_append_data(ev->eir, eir_len, EIR_CLASS_OF_DEV, 8599 dev_class, 3); 8600 8601 if (scan_rsp_len > 0) 8602 /* Append scan response data to event */ 8603 memcpy(ev->eir + eir_len, scan_rsp, scan_rsp_len); 8604 8605 ev->eir_len = cpu_to_le16(eir_len + scan_rsp_len); 8606 ev_size = sizeof(*ev) + eir_len + scan_rsp_len; 8607 8608 mgmt_event(MGMT_EV_DEVICE_FOUND, hdev, ev, ev_size, NULL); 8609 } 8610 8611 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 8612 u8 addr_type, s8 rssi, u8 *name, u8 name_len) 8613 { 8614 struct mgmt_ev_device_found *ev; 8615 char buf[sizeof(*ev) + HCI_MAX_NAME_LENGTH + 2]; 8616 u16 eir_len; 8617 8618 ev = (struct mgmt_ev_device_found *) buf; 8619 8620 memset(buf, 0, sizeof(buf)); 8621 8622 bacpy(&ev->addr.bdaddr, bdaddr); 8623 ev->addr.type = link_to_bdaddr(link_type, addr_type); 8624 ev->rssi = rssi; 8625 8626 eir_len = eir_append_data(ev->eir, 0, EIR_NAME_COMPLETE, name, 8627 name_len); 8628 8629 ev->eir_len = cpu_to_le16(eir_len); 8630 8631 mgmt_event(MGMT_EV_DEVICE_FOUND, hdev, ev, sizeof(*ev) + eir_len, NULL); 8632 } 8633 8634 void mgmt_discovering(struct hci_dev *hdev, u8 discovering) 8635 { 8636 struct mgmt_ev_discovering ev; 8637 8638 BT_DBG("%s discovering %u", hdev->name, discovering); 8639 8640 memset(&ev, 0, sizeof(ev)); 8641 ev.type = hdev->discovery.type; 8642 ev.discovering = discovering; 8643 8644 mgmt_event(MGMT_EV_DISCOVERING, hdev, &ev, sizeof(ev), NULL); 8645 } 8646 8647 static void adv_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode) 8648 { 8649 BT_DBG("%s status %u", hdev->name, status); 8650 } 8651 8652 void mgmt_reenable_advertising(struct hci_dev *hdev) 8653 { 8654 struct hci_request req; 8655 u8 instance; 8656 8657 if (!hci_dev_test_flag(hdev, HCI_ADVERTISING) && 8658 !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE)) 8659 return; 8660 8661 instance = get_current_adv_instance(hdev); 8662 8663 hci_req_init(&req, hdev); 8664 8665 if (instance) { 8666 schedule_adv_instance(&req, instance, true); 8667 } else { 8668 update_adv_data(&req); 8669 update_scan_rsp_data(&req); 8670 enable_advertising(&req); 8671 } 8672 8673 hci_req_run(&req, adv_enable_complete); 8674 } 8675 8676 static struct hci_mgmt_chan chan = { 8677 .channel = HCI_CHANNEL_CONTROL, 8678 .handler_count = ARRAY_SIZE(mgmt_handlers), 8679 .handlers = mgmt_handlers, 8680 .hdev_init = mgmt_init_hdev, 8681 }; 8682 8683 int mgmt_init(void) 8684 { 8685 return hci_mgmt_chan_register(&chan); 8686 } 8687 8688 void mgmt_exit(void) 8689 { 8690 hci_mgmt_chan_unregister(&chan); 8691 } 8692