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 3549 /* Convert from L2CAP channel address type to HCI address type 3550 */ 3551 if (cp->addr.type == BDADDR_LE_PUBLIC) 3552 addr_type = ADDR_LE_DEV_PUBLIC; 3553 else 3554 addr_type = ADDR_LE_DEV_RANDOM; 3555 3556 /* When pairing a new device, it is expected to remember 3557 * this device for future connections. Adding the connection 3558 * parameter information ahead of time allows tracking 3559 * of the slave preferred values and will speed up any 3560 * further connection establishment. 3561 * 3562 * If connection parameters already exist, then they 3563 * will be kept and this function does nothing. 3564 */ 3565 hci_conn_params_add(hdev, &cp->addr.bdaddr, addr_type); 3566 3567 conn = hci_connect_le(hdev, &cp->addr.bdaddr, addr_type, 3568 sec_level, HCI_LE_CONN_TIMEOUT, 3569 HCI_ROLE_MASTER); 3570 } 3571 3572 if (IS_ERR(conn)) { 3573 int status; 3574 3575 if (PTR_ERR(conn) == -EBUSY) 3576 status = MGMT_STATUS_BUSY; 3577 else if (PTR_ERR(conn) == -EOPNOTSUPP) 3578 status = MGMT_STATUS_NOT_SUPPORTED; 3579 else if (PTR_ERR(conn) == -ECONNREFUSED) 3580 status = MGMT_STATUS_REJECTED; 3581 else 3582 status = MGMT_STATUS_CONNECT_FAILED; 3583 3584 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE, 3585 status, &rp, sizeof(rp)); 3586 goto unlock; 3587 } 3588 3589 if (conn->connect_cfm_cb) { 3590 hci_conn_drop(conn); 3591 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE, 3592 MGMT_STATUS_BUSY, &rp, sizeof(rp)); 3593 goto unlock; 3594 } 3595 3596 cmd = mgmt_pending_add(sk, MGMT_OP_PAIR_DEVICE, hdev, data, len); 3597 if (!cmd) { 3598 err = -ENOMEM; 3599 hci_conn_drop(conn); 3600 goto unlock; 3601 } 3602 3603 cmd->cmd_complete = pairing_complete; 3604 3605 /* For LE, just connecting isn't a proof that the pairing finished */ 3606 if (cp->addr.type == BDADDR_BREDR) { 3607 conn->connect_cfm_cb = pairing_complete_cb; 3608 conn->security_cfm_cb = pairing_complete_cb; 3609 conn->disconn_cfm_cb = pairing_complete_cb; 3610 } else { 3611 conn->connect_cfm_cb = le_pairing_complete_cb; 3612 conn->security_cfm_cb = le_pairing_complete_cb; 3613 conn->disconn_cfm_cb = le_pairing_complete_cb; 3614 } 3615 3616 conn->io_capability = cp->io_cap; 3617 cmd->user_data = hci_conn_get(conn); 3618 3619 if ((conn->state == BT_CONNECTED || conn->state == BT_CONFIG) && 3620 hci_conn_security(conn, sec_level, auth_type, true)) { 3621 cmd->cmd_complete(cmd, 0); 3622 mgmt_pending_remove(cmd); 3623 } 3624 3625 err = 0; 3626 3627 unlock: 3628 hci_dev_unlock(hdev); 3629 return err; 3630 } 3631 3632 static int cancel_pair_device(struct sock *sk, struct hci_dev *hdev, void *data, 3633 u16 len) 3634 { 3635 struct mgmt_addr_info *addr = data; 3636 struct mgmt_pending_cmd *cmd; 3637 struct hci_conn *conn; 3638 int err; 3639 3640 BT_DBG(""); 3641 3642 hci_dev_lock(hdev); 3643 3644 if (!hdev_is_powered(hdev)) { 3645 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE, 3646 MGMT_STATUS_NOT_POWERED); 3647 goto unlock; 3648 } 3649 3650 cmd = pending_find(MGMT_OP_PAIR_DEVICE, hdev); 3651 if (!cmd) { 3652 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE, 3653 MGMT_STATUS_INVALID_PARAMS); 3654 goto unlock; 3655 } 3656 3657 conn = cmd->user_data; 3658 3659 if (bacmp(&addr->bdaddr, &conn->dst) != 0) { 3660 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE, 3661 MGMT_STATUS_INVALID_PARAMS); 3662 goto unlock; 3663 } 3664 3665 cmd->cmd_complete(cmd, MGMT_STATUS_CANCELLED); 3666 mgmt_pending_remove(cmd); 3667 3668 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE, 0, 3669 addr, sizeof(*addr)); 3670 unlock: 3671 hci_dev_unlock(hdev); 3672 return err; 3673 } 3674 3675 static int user_pairing_resp(struct sock *sk, struct hci_dev *hdev, 3676 struct mgmt_addr_info *addr, u16 mgmt_op, 3677 u16 hci_op, __le32 passkey) 3678 { 3679 struct mgmt_pending_cmd *cmd; 3680 struct hci_conn *conn; 3681 int err; 3682 3683 hci_dev_lock(hdev); 3684 3685 if (!hdev_is_powered(hdev)) { 3686 err = mgmt_cmd_complete(sk, hdev->id, mgmt_op, 3687 MGMT_STATUS_NOT_POWERED, addr, 3688 sizeof(*addr)); 3689 goto done; 3690 } 3691 3692 if (addr->type == BDADDR_BREDR) 3693 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &addr->bdaddr); 3694 else 3695 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &addr->bdaddr); 3696 3697 if (!conn) { 3698 err = mgmt_cmd_complete(sk, hdev->id, mgmt_op, 3699 MGMT_STATUS_NOT_CONNECTED, addr, 3700 sizeof(*addr)); 3701 goto done; 3702 } 3703 3704 if (addr->type == BDADDR_LE_PUBLIC || addr->type == BDADDR_LE_RANDOM) { 3705 err = smp_user_confirm_reply(conn, mgmt_op, passkey); 3706 if (!err) 3707 err = mgmt_cmd_complete(sk, hdev->id, mgmt_op, 3708 MGMT_STATUS_SUCCESS, addr, 3709 sizeof(*addr)); 3710 else 3711 err = mgmt_cmd_complete(sk, hdev->id, mgmt_op, 3712 MGMT_STATUS_FAILED, addr, 3713 sizeof(*addr)); 3714 3715 goto done; 3716 } 3717 3718 cmd = mgmt_pending_add(sk, mgmt_op, hdev, addr, sizeof(*addr)); 3719 if (!cmd) { 3720 err = -ENOMEM; 3721 goto done; 3722 } 3723 3724 cmd->cmd_complete = addr_cmd_complete; 3725 3726 /* Continue with pairing via HCI */ 3727 if (hci_op == HCI_OP_USER_PASSKEY_REPLY) { 3728 struct hci_cp_user_passkey_reply cp; 3729 3730 bacpy(&cp.bdaddr, &addr->bdaddr); 3731 cp.passkey = passkey; 3732 err = hci_send_cmd(hdev, hci_op, sizeof(cp), &cp); 3733 } else 3734 err = hci_send_cmd(hdev, hci_op, sizeof(addr->bdaddr), 3735 &addr->bdaddr); 3736 3737 if (err < 0) 3738 mgmt_pending_remove(cmd); 3739 3740 done: 3741 hci_dev_unlock(hdev); 3742 return err; 3743 } 3744 3745 static int pin_code_neg_reply(struct sock *sk, struct hci_dev *hdev, 3746 void *data, u16 len) 3747 { 3748 struct mgmt_cp_pin_code_neg_reply *cp = data; 3749 3750 BT_DBG(""); 3751 3752 return user_pairing_resp(sk, hdev, &cp->addr, 3753 MGMT_OP_PIN_CODE_NEG_REPLY, 3754 HCI_OP_PIN_CODE_NEG_REPLY, 0); 3755 } 3756 3757 static int user_confirm_reply(struct sock *sk, struct hci_dev *hdev, void *data, 3758 u16 len) 3759 { 3760 struct mgmt_cp_user_confirm_reply *cp = data; 3761 3762 BT_DBG(""); 3763 3764 if (len != sizeof(*cp)) 3765 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_USER_CONFIRM_REPLY, 3766 MGMT_STATUS_INVALID_PARAMS); 3767 3768 return user_pairing_resp(sk, hdev, &cp->addr, 3769 MGMT_OP_USER_CONFIRM_REPLY, 3770 HCI_OP_USER_CONFIRM_REPLY, 0); 3771 } 3772 3773 static int user_confirm_neg_reply(struct sock *sk, struct hci_dev *hdev, 3774 void *data, u16 len) 3775 { 3776 struct mgmt_cp_user_confirm_neg_reply *cp = data; 3777 3778 BT_DBG(""); 3779 3780 return user_pairing_resp(sk, hdev, &cp->addr, 3781 MGMT_OP_USER_CONFIRM_NEG_REPLY, 3782 HCI_OP_USER_CONFIRM_NEG_REPLY, 0); 3783 } 3784 3785 static int user_passkey_reply(struct sock *sk, struct hci_dev *hdev, void *data, 3786 u16 len) 3787 { 3788 struct mgmt_cp_user_passkey_reply *cp = data; 3789 3790 BT_DBG(""); 3791 3792 return user_pairing_resp(sk, hdev, &cp->addr, 3793 MGMT_OP_USER_PASSKEY_REPLY, 3794 HCI_OP_USER_PASSKEY_REPLY, cp->passkey); 3795 } 3796 3797 static int user_passkey_neg_reply(struct sock *sk, struct hci_dev *hdev, 3798 void *data, u16 len) 3799 { 3800 struct mgmt_cp_user_passkey_neg_reply *cp = data; 3801 3802 BT_DBG(""); 3803 3804 return user_pairing_resp(sk, hdev, &cp->addr, 3805 MGMT_OP_USER_PASSKEY_NEG_REPLY, 3806 HCI_OP_USER_PASSKEY_NEG_REPLY, 0); 3807 } 3808 3809 static void update_name(struct hci_request *req) 3810 { 3811 struct hci_dev *hdev = req->hdev; 3812 struct hci_cp_write_local_name cp; 3813 3814 memcpy(cp.name, hdev->dev_name, sizeof(cp.name)); 3815 3816 hci_req_add(req, HCI_OP_WRITE_LOCAL_NAME, sizeof(cp), &cp); 3817 } 3818 3819 static void set_name_complete(struct hci_dev *hdev, u8 status, u16 opcode) 3820 { 3821 struct mgmt_cp_set_local_name *cp; 3822 struct mgmt_pending_cmd *cmd; 3823 3824 BT_DBG("status 0x%02x", status); 3825 3826 hci_dev_lock(hdev); 3827 3828 cmd = pending_find(MGMT_OP_SET_LOCAL_NAME, hdev); 3829 if (!cmd) 3830 goto unlock; 3831 3832 cp = cmd->param; 3833 3834 if (status) 3835 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 3836 mgmt_status(status)); 3837 else 3838 mgmt_cmd_complete(cmd->sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0, 3839 cp, sizeof(*cp)); 3840 3841 mgmt_pending_remove(cmd); 3842 3843 unlock: 3844 hci_dev_unlock(hdev); 3845 } 3846 3847 static int set_local_name(struct sock *sk, struct hci_dev *hdev, void *data, 3848 u16 len) 3849 { 3850 struct mgmt_cp_set_local_name *cp = data; 3851 struct mgmt_pending_cmd *cmd; 3852 struct hci_request req; 3853 int err; 3854 3855 BT_DBG(""); 3856 3857 hci_dev_lock(hdev); 3858 3859 /* If the old values are the same as the new ones just return a 3860 * direct command complete event. 3861 */ 3862 if (!memcmp(hdev->dev_name, cp->name, sizeof(hdev->dev_name)) && 3863 !memcmp(hdev->short_name, cp->short_name, 3864 sizeof(hdev->short_name))) { 3865 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0, 3866 data, len); 3867 goto failed; 3868 } 3869 3870 memcpy(hdev->short_name, cp->short_name, sizeof(hdev->short_name)); 3871 3872 if (!hdev_is_powered(hdev)) { 3873 memcpy(hdev->dev_name, cp->name, sizeof(hdev->dev_name)); 3874 3875 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0, 3876 data, len); 3877 if (err < 0) 3878 goto failed; 3879 3880 err = mgmt_generic_event(MGMT_EV_LOCAL_NAME_CHANGED, hdev, 3881 data, len, sk); 3882 3883 goto failed; 3884 } 3885 3886 cmd = mgmt_pending_add(sk, MGMT_OP_SET_LOCAL_NAME, hdev, data, len); 3887 if (!cmd) { 3888 err = -ENOMEM; 3889 goto failed; 3890 } 3891 3892 memcpy(hdev->dev_name, cp->name, sizeof(hdev->dev_name)); 3893 3894 hci_req_init(&req, hdev); 3895 3896 if (lmp_bredr_capable(hdev)) { 3897 update_name(&req); 3898 update_eir(&req); 3899 } 3900 3901 /* The name is stored in the scan response data and so 3902 * no need to udpate the advertising data here. 3903 */ 3904 if (lmp_le_capable(hdev)) 3905 update_scan_rsp_data(&req); 3906 3907 err = hci_req_run(&req, set_name_complete); 3908 if (err < 0) 3909 mgmt_pending_remove(cmd); 3910 3911 failed: 3912 hci_dev_unlock(hdev); 3913 return err; 3914 } 3915 3916 static void read_local_oob_data_complete(struct hci_dev *hdev, u8 status, 3917 u16 opcode, struct sk_buff *skb) 3918 { 3919 struct mgmt_rp_read_local_oob_data mgmt_rp; 3920 size_t rp_size = sizeof(mgmt_rp); 3921 struct mgmt_pending_cmd *cmd; 3922 3923 BT_DBG("%s status %u", hdev->name, status); 3924 3925 cmd = pending_find(MGMT_OP_READ_LOCAL_OOB_DATA, hdev); 3926 if (!cmd) 3927 return; 3928 3929 if (status || !skb) { 3930 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA, 3931 status ? mgmt_status(status) : MGMT_STATUS_FAILED); 3932 goto remove; 3933 } 3934 3935 memset(&mgmt_rp, 0, sizeof(mgmt_rp)); 3936 3937 if (opcode == HCI_OP_READ_LOCAL_OOB_DATA) { 3938 struct hci_rp_read_local_oob_data *rp = (void *) skb->data; 3939 3940 if (skb->len < sizeof(*rp)) { 3941 mgmt_cmd_status(cmd->sk, hdev->id, 3942 MGMT_OP_READ_LOCAL_OOB_DATA, 3943 MGMT_STATUS_FAILED); 3944 goto remove; 3945 } 3946 3947 memcpy(mgmt_rp.hash192, rp->hash, sizeof(rp->hash)); 3948 memcpy(mgmt_rp.rand192, rp->rand, sizeof(rp->rand)); 3949 3950 rp_size -= sizeof(mgmt_rp.hash256) + sizeof(mgmt_rp.rand256); 3951 } else { 3952 struct hci_rp_read_local_oob_ext_data *rp = (void *) skb->data; 3953 3954 if (skb->len < sizeof(*rp)) { 3955 mgmt_cmd_status(cmd->sk, hdev->id, 3956 MGMT_OP_READ_LOCAL_OOB_DATA, 3957 MGMT_STATUS_FAILED); 3958 goto remove; 3959 } 3960 3961 memcpy(mgmt_rp.hash192, rp->hash192, sizeof(rp->hash192)); 3962 memcpy(mgmt_rp.rand192, rp->rand192, sizeof(rp->rand192)); 3963 3964 memcpy(mgmt_rp.hash256, rp->hash256, sizeof(rp->hash256)); 3965 memcpy(mgmt_rp.rand256, rp->rand256, sizeof(rp->rand256)); 3966 } 3967 3968 mgmt_cmd_complete(cmd->sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA, 3969 MGMT_STATUS_SUCCESS, &mgmt_rp, rp_size); 3970 3971 remove: 3972 mgmt_pending_remove(cmd); 3973 } 3974 3975 static int read_local_oob_data(struct sock *sk, struct hci_dev *hdev, 3976 void *data, u16 data_len) 3977 { 3978 struct mgmt_pending_cmd *cmd; 3979 struct hci_request req; 3980 int err; 3981 3982 BT_DBG("%s", hdev->name); 3983 3984 hci_dev_lock(hdev); 3985 3986 if (!hdev_is_powered(hdev)) { 3987 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA, 3988 MGMT_STATUS_NOT_POWERED); 3989 goto unlock; 3990 } 3991 3992 if (!lmp_ssp_capable(hdev)) { 3993 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA, 3994 MGMT_STATUS_NOT_SUPPORTED); 3995 goto unlock; 3996 } 3997 3998 if (pending_find(MGMT_OP_READ_LOCAL_OOB_DATA, hdev)) { 3999 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA, 4000 MGMT_STATUS_BUSY); 4001 goto unlock; 4002 } 4003 4004 cmd = mgmt_pending_add(sk, MGMT_OP_READ_LOCAL_OOB_DATA, hdev, NULL, 0); 4005 if (!cmd) { 4006 err = -ENOMEM; 4007 goto unlock; 4008 } 4009 4010 hci_req_init(&req, hdev); 4011 4012 if (bredr_sc_enabled(hdev)) 4013 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_EXT_DATA, 0, NULL); 4014 else 4015 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_DATA, 0, NULL); 4016 4017 err = hci_req_run_skb(&req, read_local_oob_data_complete); 4018 if (err < 0) 4019 mgmt_pending_remove(cmd); 4020 4021 unlock: 4022 hci_dev_unlock(hdev); 4023 return err; 4024 } 4025 4026 static int add_remote_oob_data(struct sock *sk, struct hci_dev *hdev, 4027 void *data, u16 len) 4028 { 4029 struct mgmt_addr_info *addr = data; 4030 int err; 4031 4032 BT_DBG("%s ", hdev->name); 4033 4034 if (!bdaddr_type_is_valid(addr->type)) 4035 return mgmt_cmd_complete(sk, hdev->id, 4036 MGMT_OP_ADD_REMOTE_OOB_DATA, 4037 MGMT_STATUS_INVALID_PARAMS, 4038 addr, sizeof(*addr)); 4039 4040 hci_dev_lock(hdev); 4041 4042 if (len == MGMT_ADD_REMOTE_OOB_DATA_SIZE) { 4043 struct mgmt_cp_add_remote_oob_data *cp = data; 4044 u8 status; 4045 4046 if (cp->addr.type != BDADDR_BREDR) { 4047 err = mgmt_cmd_complete(sk, hdev->id, 4048 MGMT_OP_ADD_REMOTE_OOB_DATA, 4049 MGMT_STATUS_INVALID_PARAMS, 4050 &cp->addr, sizeof(cp->addr)); 4051 goto unlock; 4052 } 4053 4054 err = hci_add_remote_oob_data(hdev, &cp->addr.bdaddr, 4055 cp->addr.type, cp->hash, 4056 cp->rand, NULL, NULL); 4057 if (err < 0) 4058 status = MGMT_STATUS_FAILED; 4059 else 4060 status = MGMT_STATUS_SUCCESS; 4061 4062 err = mgmt_cmd_complete(sk, hdev->id, 4063 MGMT_OP_ADD_REMOTE_OOB_DATA, status, 4064 &cp->addr, sizeof(cp->addr)); 4065 } else if (len == MGMT_ADD_REMOTE_OOB_EXT_DATA_SIZE) { 4066 struct mgmt_cp_add_remote_oob_ext_data *cp = data; 4067 u8 *rand192, *hash192, *rand256, *hash256; 4068 u8 status; 4069 4070 if (bdaddr_type_is_le(cp->addr.type)) { 4071 /* Enforce zero-valued 192-bit parameters as 4072 * long as legacy SMP OOB isn't implemented. 4073 */ 4074 if (memcmp(cp->rand192, ZERO_KEY, 16) || 4075 memcmp(cp->hash192, ZERO_KEY, 16)) { 4076 err = mgmt_cmd_complete(sk, hdev->id, 4077 MGMT_OP_ADD_REMOTE_OOB_DATA, 4078 MGMT_STATUS_INVALID_PARAMS, 4079 addr, sizeof(*addr)); 4080 goto unlock; 4081 } 4082 4083 rand192 = NULL; 4084 hash192 = NULL; 4085 } else { 4086 /* In case one of the P-192 values is set to zero, 4087 * then just disable OOB data for P-192. 4088 */ 4089 if (!memcmp(cp->rand192, ZERO_KEY, 16) || 4090 !memcmp(cp->hash192, ZERO_KEY, 16)) { 4091 rand192 = NULL; 4092 hash192 = NULL; 4093 } else { 4094 rand192 = cp->rand192; 4095 hash192 = cp->hash192; 4096 } 4097 } 4098 4099 /* In case one of the P-256 values is set to zero, then just 4100 * disable OOB data for P-256. 4101 */ 4102 if (!memcmp(cp->rand256, ZERO_KEY, 16) || 4103 !memcmp(cp->hash256, ZERO_KEY, 16)) { 4104 rand256 = NULL; 4105 hash256 = NULL; 4106 } else { 4107 rand256 = cp->rand256; 4108 hash256 = cp->hash256; 4109 } 4110 4111 err = hci_add_remote_oob_data(hdev, &cp->addr.bdaddr, 4112 cp->addr.type, hash192, rand192, 4113 hash256, rand256); 4114 if (err < 0) 4115 status = MGMT_STATUS_FAILED; 4116 else 4117 status = MGMT_STATUS_SUCCESS; 4118 4119 err = mgmt_cmd_complete(sk, hdev->id, 4120 MGMT_OP_ADD_REMOTE_OOB_DATA, 4121 status, &cp->addr, sizeof(cp->addr)); 4122 } else { 4123 BT_ERR("add_remote_oob_data: invalid length of %u bytes", len); 4124 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_REMOTE_OOB_DATA, 4125 MGMT_STATUS_INVALID_PARAMS); 4126 } 4127 4128 unlock: 4129 hci_dev_unlock(hdev); 4130 return err; 4131 } 4132 4133 static int remove_remote_oob_data(struct sock *sk, struct hci_dev *hdev, 4134 void *data, u16 len) 4135 { 4136 struct mgmt_cp_remove_remote_oob_data *cp = data; 4137 u8 status; 4138 int err; 4139 4140 BT_DBG("%s", hdev->name); 4141 4142 if (cp->addr.type != BDADDR_BREDR) 4143 return mgmt_cmd_complete(sk, hdev->id, 4144 MGMT_OP_REMOVE_REMOTE_OOB_DATA, 4145 MGMT_STATUS_INVALID_PARAMS, 4146 &cp->addr, sizeof(cp->addr)); 4147 4148 hci_dev_lock(hdev); 4149 4150 if (!bacmp(&cp->addr.bdaddr, BDADDR_ANY)) { 4151 hci_remote_oob_data_clear(hdev); 4152 status = MGMT_STATUS_SUCCESS; 4153 goto done; 4154 } 4155 4156 err = hci_remove_remote_oob_data(hdev, &cp->addr.bdaddr, cp->addr.type); 4157 if (err < 0) 4158 status = MGMT_STATUS_INVALID_PARAMS; 4159 else 4160 status = MGMT_STATUS_SUCCESS; 4161 4162 done: 4163 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_REMOTE_OOB_DATA, 4164 status, &cp->addr, sizeof(cp->addr)); 4165 4166 hci_dev_unlock(hdev); 4167 return err; 4168 } 4169 4170 static bool trigger_bredr_inquiry(struct hci_request *req, u8 *status) 4171 { 4172 struct hci_dev *hdev = req->hdev; 4173 struct hci_cp_inquiry cp; 4174 /* General inquiry access code (GIAC) */ 4175 u8 lap[3] = { 0x33, 0x8b, 0x9e }; 4176 4177 *status = mgmt_bredr_support(hdev); 4178 if (*status) 4179 return false; 4180 4181 if (hci_dev_test_flag(hdev, HCI_INQUIRY)) { 4182 *status = MGMT_STATUS_BUSY; 4183 return false; 4184 } 4185 4186 hci_inquiry_cache_flush(hdev); 4187 4188 memset(&cp, 0, sizeof(cp)); 4189 memcpy(&cp.lap, lap, sizeof(cp.lap)); 4190 cp.length = DISCOV_BREDR_INQUIRY_LEN; 4191 4192 hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); 4193 4194 return true; 4195 } 4196 4197 static bool trigger_le_scan(struct hci_request *req, u16 interval, u8 *status) 4198 { 4199 struct hci_dev *hdev = req->hdev; 4200 struct hci_cp_le_set_scan_param param_cp; 4201 struct hci_cp_le_set_scan_enable enable_cp; 4202 u8 own_addr_type; 4203 int err; 4204 4205 *status = mgmt_le_support(hdev); 4206 if (*status) 4207 return false; 4208 4209 if (hci_dev_test_flag(hdev, HCI_LE_ADV)) { 4210 /* Don't let discovery abort an outgoing connection attempt 4211 * that's using directed advertising. 4212 */ 4213 if (hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT)) { 4214 *status = MGMT_STATUS_REJECTED; 4215 return false; 4216 } 4217 4218 cancel_adv_timeout(hdev); 4219 disable_advertising(req); 4220 } 4221 4222 /* If controller is scanning, it means the background scanning is 4223 * running. Thus, we should temporarily stop it in order to set the 4224 * discovery scanning parameters. 4225 */ 4226 if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) 4227 hci_req_add_le_scan_disable(req); 4228 4229 /* All active scans will be done with either a resolvable private 4230 * address (when privacy feature has been enabled) or non-resolvable 4231 * private address. 4232 */ 4233 err = hci_update_random_address(req, true, &own_addr_type); 4234 if (err < 0) { 4235 *status = MGMT_STATUS_FAILED; 4236 return false; 4237 } 4238 4239 memset(¶m_cp, 0, sizeof(param_cp)); 4240 param_cp.type = LE_SCAN_ACTIVE; 4241 param_cp.interval = cpu_to_le16(interval); 4242 param_cp.window = cpu_to_le16(DISCOV_LE_SCAN_WIN); 4243 param_cp.own_address_type = own_addr_type; 4244 4245 hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp), 4246 ¶m_cp); 4247 4248 memset(&enable_cp, 0, sizeof(enable_cp)); 4249 enable_cp.enable = LE_SCAN_ENABLE; 4250 enable_cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE; 4251 4252 hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp), 4253 &enable_cp); 4254 4255 return true; 4256 } 4257 4258 static bool trigger_discovery(struct hci_request *req, u8 *status) 4259 { 4260 struct hci_dev *hdev = req->hdev; 4261 4262 switch (hdev->discovery.type) { 4263 case DISCOV_TYPE_BREDR: 4264 if (!trigger_bredr_inquiry(req, status)) 4265 return false; 4266 break; 4267 4268 case DISCOV_TYPE_INTERLEAVED: 4269 if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, 4270 &hdev->quirks)) { 4271 /* During simultaneous discovery, we double LE scan 4272 * interval. We must leave some time for the controller 4273 * to do BR/EDR inquiry. 4274 */ 4275 if (!trigger_le_scan(req, DISCOV_LE_SCAN_INT * 2, 4276 status)) 4277 return false; 4278 4279 if (!trigger_bredr_inquiry(req, status)) 4280 return false; 4281 4282 return true; 4283 } 4284 4285 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { 4286 *status = MGMT_STATUS_NOT_SUPPORTED; 4287 return false; 4288 } 4289 /* fall through */ 4290 4291 case DISCOV_TYPE_LE: 4292 if (!trigger_le_scan(req, DISCOV_LE_SCAN_INT, status)) 4293 return false; 4294 break; 4295 4296 default: 4297 *status = MGMT_STATUS_INVALID_PARAMS; 4298 return false; 4299 } 4300 4301 return true; 4302 } 4303 4304 static void start_discovery_complete(struct hci_dev *hdev, u8 status, 4305 u16 opcode) 4306 { 4307 struct mgmt_pending_cmd *cmd; 4308 unsigned long timeout; 4309 4310 BT_DBG("status %d", status); 4311 4312 hci_dev_lock(hdev); 4313 4314 cmd = pending_find(MGMT_OP_START_DISCOVERY, hdev); 4315 if (!cmd) 4316 cmd = pending_find(MGMT_OP_START_SERVICE_DISCOVERY, hdev); 4317 4318 if (cmd) { 4319 cmd->cmd_complete(cmd, mgmt_status(status)); 4320 mgmt_pending_remove(cmd); 4321 } 4322 4323 if (status) { 4324 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 4325 goto unlock; 4326 } 4327 4328 hci_discovery_set_state(hdev, DISCOVERY_FINDING); 4329 4330 /* If the scan involves LE scan, pick proper timeout to schedule 4331 * hdev->le_scan_disable that will stop it. 4332 */ 4333 switch (hdev->discovery.type) { 4334 case DISCOV_TYPE_LE: 4335 timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT); 4336 break; 4337 case DISCOV_TYPE_INTERLEAVED: 4338 /* When running simultaneous discovery, the LE scanning time 4339 * should occupy the whole discovery time sine BR/EDR inquiry 4340 * and LE scanning are scheduled by the controller. 4341 * 4342 * For interleaving discovery in comparison, BR/EDR inquiry 4343 * and LE scanning are done sequentially with separate 4344 * timeouts. 4345 */ 4346 if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 4347 timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT); 4348 else 4349 timeout = msecs_to_jiffies(hdev->discov_interleaved_timeout); 4350 break; 4351 case DISCOV_TYPE_BREDR: 4352 timeout = 0; 4353 break; 4354 default: 4355 BT_ERR("Invalid discovery type %d", hdev->discovery.type); 4356 timeout = 0; 4357 break; 4358 } 4359 4360 if (timeout) { 4361 /* When service discovery is used and the controller has 4362 * a strict duplicate filter, it is important to remember 4363 * the start and duration of the scan. This is required 4364 * for restarting scanning during the discovery phase. 4365 */ 4366 if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, 4367 &hdev->quirks) && 4368 hdev->discovery.result_filtering) { 4369 hdev->discovery.scan_start = jiffies; 4370 hdev->discovery.scan_duration = timeout; 4371 } 4372 4373 queue_delayed_work(hdev->workqueue, 4374 &hdev->le_scan_disable, timeout); 4375 } 4376 4377 unlock: 4378 hci_dev_unlock(hdev); 4379 } 4380 4381 static int start_discovery(struct sock *sk, struct hci_dev *hdev, 4382 void *data, u16 len) 4383 { 4384 struct mgmt_cp_start_discovery *cp = data; 4385 struct mgmt_pending_cmd *cmd; 4386 struct hci_request req; 4387 u8 status; 4388 int err; 4389 4390 BT_DBG("%s", hdev->name); 4391 4392 hci_dev_lock(hdev); 4393 4394 if (!hdev_is_powered(hdev)) { 4395 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY, 4396 MGMT_STATUS_NOT_POWERED, 4397 &cp->type, sizeof(cp->type)); 4398 goto failed; 4399 } 4400 4401 if (hdev->discovery.state != DISCOVERY_STOPPED || 4402 hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) { 4403 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY, 4404 MGMT_STATUS_BUSY, &cp->type, 4405 sizeof(cp->type)); 4406 goto failed; 4407 } 4408 4409 cmd = mgmt_pending_add(sk, MGMT_OP_START_DISCOVERY, hdev, data, len); 4410 if (!cmd) { 4411 err = -ENOMEM; 4412 goto failed; 4413 } 4414 4415 cmd->cmd_complete = generic_cmd_complete; 4416 4417 /* Clear the discovery filter first to free any previously 4418 * allocated memory for the UUID list. 4419 */ 4420 hci_discovery_filter_clear(hdev); 4421 4422 hdev->discovery.type = cp->type; 4423 hdev->discovery.report_invalid_rssi = false; 4424 4425 hci_req_init(&req, hdev); 4426 4427 if (!trigger_discovery(&req, &status)) { 4428 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY, 4429 status, &cp->type, sizeof(cp->type)); 4430 mgmt_pending_remove(cmd); 4431 goto failed; 4432 } 4433 4434 err = hci_req_run(&req, start_discovery_complete); 4435 if (err < 0) { 4436 mgmt_pending_remove(cmd); 4437 goto failed; 4438 } 4439 4440 hci_discovery_set_state(hdev, DISCOVERY_STARTING); 4441 4442 failed: 4443 hci_dev_unlock(hdev); 4444 return err; 4445 } 4446 4447 static int service_discovery_cmd_complete(struct mgmt_pending_cmd *cmd, 4448 u8 status) 4449 { 4450 return mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status, 4451 cmd->param, 1); 4452 } 4453 4454 static int start_service_discovery(struct sock *sk, struct hci_dev *hdev, 4455 void *data, u16 len) 4456 { 4457 struct mgmt_cp_start_service_discovery *cp = data; 4458 struct mgmt_pending_cmd *cmd; 4459 struct hci_request req; 4460 const u16 max_uuid_count = ((U16_MAX - sizeof(*cp)) / 16); 4461 u16 uuid_count, expected_len; 4462 u8 status; 4463 int err; 4464 4465 BT_DBG("%s", hdev->name); 4466 4467 hci_dev_lock(hdev); 4468 4469 if (!hdev_is_powered(hdev)) { 4470 err = mgmt_cmd_complete(sk, hdev->id, 4471 MGMT_OP_START_SERVICE_DISCOVERY, 4472 MGMT_STATUS_NOT_POWERED, 4473 &cp->type, sizeof(cp->type)); 4474 goto failed; 4475 } 4476 4477 if (hdev->discovery.state != DISCOVERY_STOPPED || 4478 hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) { 4479 err = mgmt_cmd_complete(sk, hdev->id, 4480 MGMT_OP_START_SERVICE_DISCOVERY, 4481 MGMT_STATUS_BUSY, &cp->type, 4482 sizeof(cp->type)); 4483 goto failed; 4484 } 4485 4486 uuid_count = __le16_to_cpu(cp->uuid_count); 4487 if (uuid_count > max_uuid_count) { 4488 BT_ERR("service_discovery: too big uuid_count value %u", 4489 uuid_count); 4490 err = mgmt_cmd_complete(sk, hdev->id, 4491 MGMT_OP_START_SERVICE_DISCOVERY, 4492 MGMT_STATUS_INVALID_PARAMS, &cp->type, 4493 sizeof(cp->type)); 4494 goto failed; 4495 } 4496 4497 expected_len = sizeof(*cp) + uuid_count * 16; 4498 if (expected_len != len) { 4499 BT_ERR("service_discovery: expected %u bytes, got %u bytes", 4500 expected_len, len); 4501 err = mgmt_cmd_complete(sk, hdev->id, 4502 MGMT_OP_START_SERVICE_DISCOVERY, 4503 MGMT_STATUS_INVALID_PARAMS, &cp->type, 4504 sizeof(cp->type)); 4505 goto failed; 4506 } 4507 4508 cmd = mgmt_pending_add(sk, MGMT_OP_START_SERVICE_DISCOVERY, 4509 hdev, data, len); 4510 if (!cmd) { 4511 err = -ENOMEM; 4512 goto failed; 4513 } 4514 4515 cmd->cmd_complete = service_discovery_cmd_complete; 4516 4517 /* Clear the discovery filter first to free any previously 4518 * allocated memory for the UUID list. 4519 */ 4520 hci_discovery_filter_clear(hdev); 4521 4522 hdev->discovery.result_filtering = true; 4523 hdev->discovery.type = cp->type; 4524 hdev->discovery.rssi = cp->rssi; 4525 hdev->discovery.uuid_count = uuid_count; 4526 4527 if (uuid_count > 0) { 4528 hdev->discovery.uuids = kmemdup(cp->uuids, uuid_count * 16, 4529 GFP_KERNEL); 4530 if (!hdev->discovery.uuids) { 4531 err = mgmt_cmd_complete(sk, hdev->id, 4532 MGMT_OP_START_SERVICE_DISCOVERY, 4533 MGMT_STATUS_FAILED, 4534 &cp->type, sizeof(cp->type)); 4535 mgmt_pending_remove(cmd); 4536 goto failed; 4537 } 4538 } 4539 4540 hci_req_init(&req, hdev); 4541 4542 if (!trigger_discovery(&req, &status)) { 4543 err = mgmt_cmd_complete(sk, hdev->id, 4544 MGMT_OP_START_SERVICE_DISCOVERY, 4545 status, &cp->type, sizeof(cp->type)); 4546 mgmt_pending_remove(cmd); 4547 goto failed; 4548 } 4549 4550 err = hci_req_run(&req, start_discovery_complete); 4551 if (err < 0) { 4552 mgmt_pending_remove(cmd); 4553 goto failed; 4554 } 4555 4556 hci_discovery_set_state(hdev, DISCOVERY_STARTING); 4557 4558 failed: 4559 hci_dev_unlock(hdev); 4560 return err; 4561 } 4562 4563 static void stop_discovery_complete(struct hci_dev *hdev, u8 status, u16 opcode) 4564 { 4565 struct mgmt_pending_cmd *cmd; 4566 4567 BT_DBG("status %d", status); 4568 4569 hci_dev_lock(hdev); 4570 4571 cmd = pending_find(MGMT_OP_STOP_DISCOVERY, hdev); 4572 if (cmd) { 4573 cmd->cmd_complete(cmd, mgmt_status(status)); 4574 mgmt_pending_remove(cmd); 4575 } 4576 4577 if (!status) 4578 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 4579 4580 hci_dev_unlock(hdev); 4581 } 4582 4583 static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data, 4584 u16 len) 4585 { 4586 struct mgmt_cp_stop_discovery *mgmt_cp = data; 4587 struct mgmt_pending_cmd *cmd; 4588 struct hci_request req; 4589 int err; 4590 4591 BT_DBG("%s", hdev->name); 4592 4593 hci_dev_lock(hdev); 4594 4595 if (!hci_discovery_active(hdev)) { 4596 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY, 4597 MGMT_STATUS_REJECTED, &mgmt_cp->type, 4598 sizeof(mgmt_cp->type)); 4599 goto unlock; 4600 } 4601 4602 if (hdev->discovery.type != mgmt_cp->type) { 4603 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY, 4604 MGMT_STATUS_INVALID_PARAMS, 4605 &mgmt_cp->type, sizeof(mgmt_cp->type)); 4606 goto unlock; 4607 } 4608 4609 cmd = mgmt_pending_add(sk, MGMT_OP_STOP_DISCOVERY, hdev, data, len); 4610 if (!cmd) { 4611 err = -ENOMEM; 4612 goto unlock; 4613 } 4614 4615 cmd->cmd_complete = generic_cmd_complete; 4616 4617 hci_req_init(&req, hdev); 4618 4619 hci_stop_discovery(&req); 4620 4621 err = hci_req_run(&req, stop_discovery_complete); 4622 if (!err) { 4623 hci_discovery_set_state(hdev, DISCOVERY_STOPPING); 4624 goto unlock; 4625 } 4626 4627 mgmt_pending_remove(cmd); 4628 4629 /* If no HCI commands were sent we're done */ 4630 if (err == -ENODATA) { 4631 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY, 0, 4632 &mgmt_cp->type, sizeof(mgmt_cp->type)); 4633 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 4634 } 4635 4636 unlock: 4637 hci_dev_unlock(hdev); 4638 return err; 4639 } 4640 4641 static int confirm_name(struct sock *sk, struct hci_dev *hdev, void *data, 4642 u16 len) 4643 { 4644 struct mgmt_cp_confirm_name *cp = data; 4645 struct inquiry_entry *e; 4646 int err; 4647 4648 BT_DBG("%s", hdev->name); 4649 4650 hci_dev_lock(hdev); 4651 4652 if (!hci_discovery_active(hdev)) { 4653 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME, 4654 MGMT_STATUS_FAILED, &cp->addr, 4655 sizeof(cp->addr)); 4656 goto failed; 4657 } 4658 4659 e = hci_inquiry_cache_lookup_unknown(hdev, &cp->addr.bdaddr); 4660 if (!e) { 4661 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME, 4662 MGMT_STATUS_INVALID_PARAMS, &cp->addr, 4663 sizeof(cp->addr)); 4664 goto failed; 4665 } 4666 4667 if (cp->name_known) { 4668 e->name_state = NAME_KNOWN; 4669 list_del(&e->list); 4670 } else { 4671 e->name_state = NAME_NEEDED; 4672 hci_inquiry_cache_update_resolve(hdev, e); 4673 } 4674 4675 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME, 0, 4676 &cp->addr, sizeof(cp->addr)); 4677 4678 failed: 4679 hci_dev_unlock(hdev); 4680 return err; 4681 } 4682 4683 static int block_device(struct sock *sk, struct hci_dev *hdev, void *data, 4684 u16 len) 4685 { 4686 struct mgmt_cp_block_device *cp = data; 4687 u8 status; 4688 int err; 4689 4690 BT_DBG("%s", hdev->name); 4691 4692 if (!bdaddr_type_is_valid(cp->addr.type)) 4693 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_BLOCK_DEVICE, 4694 MGMT_STATUS_INVALID_PARAMS, 4695 &cp->addr, sizeof(cp->addr)); 4696 4697 hci_dev_lock(hdev); 4698 4699 err = hci_bdaddr_list_add(&hdev->blacklist, &cp->addr.bdaddr, 4700 cp->addr.type); 4701 if (err < 0) { 4702 status = MGMT_STATUS_FAILED; 4703 goto done; 4704 } 4705 4706 mgmt_event(MGMT_EV_DEVICE_BLOCKED, hdev, &cp->addr, sizeof(cp->addr), 4707 sk); 4708 status = MGMT_STATUS_SUCCESS; 4709 4710 done: 4711 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_BLOCK_DEVICE, status, 4712 &cp->addr, sizeof(cp->addr)); 4713 4714 hci_dev_unlock(hdev); 4715 4716 return err; 4717 } 4718 4719 static int unblock_device(struct sock *sk, struct hci_dev *hdev, void *data, 4720 u16 len) 4721 { 4722 struct mgmt_cp_unblock_device *cp = data; 4723 u8 status; 4724 int err; 4725 4726 BT_DBG("%s", hdev->name); 4727 4728 if (!bdaddr_type_is_valid(cp->addr.type)) 4729 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNBLOCK_DEVICE, 4730 MGMT_STATUS_INVALID_PARAMS, 4731 &cp->addr, sizeof(cp->addr)); 4732 4733 hci_dev_lock(hdev); 4734 4735 err = hci_bdaddr_list_del(&hdev->blacklist, &cp->addr.bdaddr, 4736 cp->addr.type); 4737 if (err < 0) { 4738 status = MGMT_STATUS_INVALID_PARAMS; 4739 goto done; 4740 } 4741 4742 mgmt_event(MGMT_EV_DEVICE_UNBLOCKED, hdev, &cp->addr, sizeof(cp->addr), 4743 sk); 4744 status = MGMT_STATUS_SUCCESS; 4745 4746 done: 4747 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNBLOCK_DEVICE, status, 4748 &cp->addr, sizeof(cp->addr)); 4749 4750 hci_dev_unlock(hdev); 4751 4752 return err; 4753 } 4754 4755 static int set_device_id(struct sock *sk, struct hci_dev *hdev, void *data, 4756 u16 len) 4757 { 4758 struct mgmt_cp_set_device_id *cp = data; 4759 struct hci_request req; 4760 int err; 4761 __u16 source; 4762 4763 BT_DBG("%s", hdev->name); 4764 4765 source = __le16_to_cpu(cp->source); 4766 4767 if (source > 0x0002) 4768 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEVICE_ID, 4769 MGMT_STATUS_INVALID_PARAMS); 4770 4771 hci_dev_lock(hdev); 4772 4773 hdev->devid_source = source; 4774 hdev->devid_vendor = __le16_to_cpu(cp->vendor); 4775 hdev->devid_product = __le16_to_cpu(cp->product); 4776 hdev->devid_version = __le16_to_cpu(cp->version); 4777 4778 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_DEVICE_ID, 0, 4779 NULL, 0); 4780 4781 hci_req_init(&req, hdev); 4782 update_eir(&req); 4783 hci_req_run(&req, NULL); 4784 4785 hci_dev_unlock(hdev); 4786 4787 return err; 4788 } 4789 4790 static void enable_advertising_instance(struct hci_dev *hdev, u8 status, 4791 u16 opcode) 4792 { 4793 BT_DBG("status %d", status); 4794 } 4795 4796 static void set_advertising_complete(struct hci_dev *hdev, u8 status, 4797 u16 opcode) 4798 { 4799 struct cmd_lookup match = { NULL, hdev }; 4800 struct hci_request req; 4801 u8 instance; 4802 struct adv_info *adv_instance; 4803 int err; 4804 4805 hci_dev_lock(hdev); 4806 4807 if (status) { 4808 u8 mgmt_err = mgmt_status(status); 4809 4810 mgmt_pending_foreach(MGMT_OP_SET_ADVERTISING, hdev, 4811 cmd_status_rsp, &mgmt_err); 4812 goto unlock; 4813 } 4814 4815 if (hci_dev_test_flag(hdev, HCI_LE_ADV)) 4816 hci_dev_set_flag(hdev, HCI_ADVERTISING); 4817 else 4818 hci_dev_clear_flag(hdev, HCI_ADVERTISING); 4819 4820 mgmt_pending_foreach(MGMT_OP_SET_ADVERTISING, hdev, settings_rsp, 4821 &match); 4822 4823 new_settings(hdev, match.sk); 4824 4825 if (match.sk) 4826 sock_put(match.sk); 4827 4828 /* If "Set Advertising" was just disabled and instance advertising was 4829 * set up earlier, then re-enable multi-instance advertising. 4830 */ 4831 if (hci_dev_test_flag(hdev, HCI_ADVERTISING) || 4832 !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) || 4833 list_empty(&hdev->adv_instances)) 4834 goto unlock; 4835 4836 instance = hdev->cur_adv_instance; 4837 if (!instance) { 4838 adv_instance = list_first_entry_or_null(&hdev->adv_instances, 4839 struct adv_info, list); 4840 if (!adv_instance) 4841 goto unlock; 4842 4843 instance = adv_instance->instance; 4844 } 4845 4846 hci_req_init(&req, hdev); 4847 4848 err = schedule_adv_instance(&req, instance, true); 4849 4850 if (!err) 4851 err = hci_req_run(&req, enable_advertising_instance); 4852 4853 if (err) 4854 BT_ERR("Failed to re-configure advertising"); 4855 4856 unlock: 4857 hci_dev_unlock(hdev); 4858 } 4859 4860 static int set_advertising(struct sock *sk, struct hci_dev *hdev, void *data, 4861 u16 len) 4862 { 4863 struct mgmt_mode *cp = data; 4864 struct mgmt_pending_cmd *cmd; 4865 struct hci_request req; 4866 u8 val, status; 4867 int err; 4868 4869 BT_DBG("request for %s", hdev->name); 4870 4871 status = mgmt_le_support(hdev); 4872 if (status) 4873 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING, 4874 status); 4875 4876 if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02) 4877 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING, 4878 MGMT_STATUS_INVALID_PARAMS); 4879 4880 hci_dev_lock(hdev); 4881 4882 val = !!cp->val; 4883 4884 /* The following conditions are ones which mean that we should 4885 * not do any HCI communication but directly send a mgmt 4886 * response to user space (after toggling the flag if 4887 * necessary). 4888 */ 4889 if (!hdev_is_powered(hdev) || 4890 (val == hci_dev_test_flag(hdev, HCI_ADVERTISING) && 4891 (cp->val == 0x02) == hci_dev_test_flag(hdev, HCI_ADVERTISING_CONNECTABLE)) || 4892 hci_conn_num(hdev, LE_LINK) > 0 || 4893 (hci_dev_test_flag(hdev, HCI_LE_SCAN) && 4894 hdev->le_scan_type == LE_SCAN_ACTIVE)) { 4895 bool changed; 4896 4897 if (cp->val) { 4898 changed = !hci_dev_test_and_set_flag(hdev, HCI_ADVERTISING); 4899 if (cp->val == 0x02) 4900 hci_dev_set_flag(hdev, HCI_ADVERTISING_CONNECTABLE); 4901 else 4902 hci_dev_clear_flag(hdev, HCI_ADVERTISING_CONNECTABLE); 4903 } else { 4904 changed = hci_dev_test_and_clear_flag(hdev, HCI_ADVERTISING); 4905 hci_dev_clear_flag(hdev, HCI_ADVERTISING_CONNECTABLE); 4906 } 4907 4908 err = send_settings_rsp(sk, MGMT_OP_SET_ADVERTISING, hdev); 4909 if (err < 0) 4910 goto unlock; 4911 4912 if (changed) 4913 err = new_settings(hdev, sk); 4914 4915 goto unlock; 4916 } 4917 4918 if (pending_find(MGMT_OP_SET_ADVERTISING, hdev) || 4919 pending_find(MGMT_OP_SET_LE, hdev)) { 4920 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING, 4921 MGMT_STATUS_BUSY); 4922 goto unlock; 4923 } 4924 4925 cmd = mgmt_pending_add(sk, MGMT_OP_SET_ADVERTISING, hdev, data, len); 4926 if (!cmd) { 4927 err = -ENOMEM; 4928 goto unlock; 4929 } 4930 4931 hci_req_init(&req, hdev); 4932 4933 if (cp->val == 0x02) 4934 hci_dev_set_flag(hdev, HCI_ADVERTISING_CONNECTABLE); 4935 else 4936 hci_dev_clear_flag(hdev, HCI_ADVERTISING_CONNECTABLE); 4937 4938 cancel_adv_timeout(hdev); 4939 4940 if (val) { 4941 /* Switch to instance "0" for the Set Advertising setting. 4942 * We cannot use update_[adv|scan_rsp]_data() here as the 4943 * HCI_ADVERTISING flag is not yet set. 4944 */ 4945 update_inst_adv_data(&req, 0x00); 4946 update_inst_scan_rsp_data(&req, 0x00); 4947 enable_advertising(&req); 4948 } else { 4949 disable_advertising(&req); 4950 } 4951 4952 err = hci_req_run(&req, set_advertising_complete); 4953 if (err < 0) 4954 mgmt_pending_remove(cmd); 4955 4956 unlock: 4957 hci_dev_unlock(hdev); 4958 return err; 4959 } 4960 4961 static int set_static_address(struct sock *sk, struct hci_dev *hdev, 4962 void *data, u16 len) 4963 { 4964 struct mgmt_cp_set_static_address *cp = data; 4965 int err; 4966 4967 BT_DBG("%s", hdev->name); 4968 4969 if (!lmp_le_capable(hdev)) 4970 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_STATIC_ADDRESS, 4971 MGMT_STATUS_NOT_SUPPORTED); 4972 4973 if (hdev_is_powered(hdev)) 4974 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_STATIC_ADDRESS, 4975 MGMT_STATUS_REJECTED); 4976 4977 if (bacmp(&cp->bdaddr, BDADDR_ANY)) { 4978 if (!bacmp(&cp->bdaddr, BDADDR_NONE)) 4979 return mgmt_cmd_status(sk, hdev->id, 4980 MGMT_OP_SET_STATIC_ADDRESS, 4981 MGMT_STATUS_INVALID_PARAMS); 4982 4983 /* Two most significant bits shall be set */ 4984 if ((cp->bdaddr.b[5] & 0xc0) != 0xc0) 4985 return mgmt_cmd_status(sk, hdev->id, 4986 MGMT_OP_SET_STATIC_ADDRESS, 4987 MGMT_STATUS_INVALID_PARAMS); 4988 } 4989 4990 hci_dev_lock(hdev); 4991 4992 bacpy(&hdev->static_addr, &cp->bdaddr); 4993 4994 err = send_settings_rsp(sk, MGMT_OP_SET_STATIC_ADDRESS, hdev); 4995 if (err < 0) 4996 goto unlock; 4997 4998 err = new_settings(hdev, sk); 4999 5000 unlock: 5001 hci_dev_unlock(hdev); 5002 return err; 5003 } 5004 5005 static int set_scan_params(struct sock *sk, struct hci_dev *hdev, 5006 void *data, u16 len) 5007 { 5008 struct mgmt_cp_set_scan_params *cp = data; 5009 __u16 interval, window; 5010 int err; 5011 5012 BT_DBG("%s", hdev->name); 5013 5014 if (!lmp_le_capable(hdev)) 5015 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, 5016 MGMT_STATUS_NOT_SUPPORTED); 5017 5018 interval = __le16_to_cpu(cp->interval); 5019 5020 if (interval < 0x0004 || interval > 0x4000) 5021 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, 5022 MGMT_STATUS_INVALID_PARAMS); 5023 5024 window = __le16_to_cpu(cp->window); 5025 5026 if (window < 0x0004 || window > 0x4000) 5027 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, 5028 MGMT_STATUS_INVALID_PARAMS); 5029 5030 if (window > interval) 5031 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, 5032 MGMT_STATUS_INVALID_PARAMS); 5033 5034 hci_dev_lock(hdev); 5035 5036 hdev->le_scan_interval = interval; 5037 hdev->le_scan_window = window; 5038 5039 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, 0, 5040 NULL, 0); 5041 5042 /* If background scan is running, restart it so new parameters are 5043 * loaded. 5044 */ 5045 if (hci_dev_test_flag(hdev, HCI_LE_SCAN) && 5046 hdev->discovery.state == DISCOVERY_STOPPED) { 5047 struct hci_request req; 5048 5049 hci_req_init(&req, hdev); 5050 5051 hci_req_add_le_scan_disable(&req); 5052 hci_req_add_le_passive_scan(&req); 5053 5054 hci_req_run(&req, NULL); 5055 } 5056 5057 hci_dev_unlock(hdev); 5058 5059 return err; 5060 } 5061 5062 static void fast_connectable_complete(struct hci_dev *hdev, u8 status, 5063 u16 opcode) 5064 { 5065 struct mgmt_pending_cmd *cmd; 5066 5067 BT_DBG("status 0x%02x", status); 5068 5069 hci_dev_lock(hdev); 5070 5071 cmd = pending_find(MGMT_OP_SET_FAST_CONNECTABLE, hdev); 5072 if (!cmd) 5073 goto unlock; 5074 5075 if (status) { 5076 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE, 5077 mgmt_status(status)); 5078 } else { 5079 struct mgmt_mode *cp = cmd->param; 5080 5081 if (cp->val) 5082 hci_dev_set_flag(hdev, HCI_FAST_CONNECTABLE); 5083 else 5084 hci_dev_clear_flag(hdev, HCI_FAST_CONNECTABLE); 5085 5086 send_settings_rsp(cmd->sk, MGMT_OP_SET_FAST_CONNECTABLE, hdev); 5087 new_settings(hdev, cmd->sk); 5088 } 5089 5090 mgmt_pending_remove(cmd); 5091 5092 unlock: 5093 hci_dev_unlock(hdev); 5094 } 5095 5096 static int set_fast_connectable(struct sock *sk, struct hci_dev *hdev, 5097 void *data, u16 len) 5098 { 5099 struct mgmt_mode *cp = data; 5100 struct mgmt_pending_cmd *cmd; 5101 struct hci_request req; 5102 int err; 5103 5104 BT_DBG("%s", hdev->name); 5105 5106 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) || 5107 hdev->hci_ver < BLUETOOTH_VER_1_2) 5108 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE, 5109 MGMT_STATUS_NOT_SUPPORTED); 5110 5111 if (cp->val != 0x00 && cp->val != 0x01) 5112 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE, 5113 MGMT_STATUS_INVALID_PARAMS); 5114 5115 hci_dev_lock(hdev); 5116 5117 if (pending_find(MGMT_OP_SET_FAST_CONNECTABLE, hdev)) { 5118 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE, 5119 MGMT_STATUS_BUSY); 5120 goto unlock; 5121 } 5122 5123 if (!!cp->val == hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE)) { 5124 err = send_settings_rsp(sk, MGMT_OP_SET_FAST_CONNECTABLE, 5125 hdev); 5126 goto unlock; 5127 } 5128 5129 if (!hdev_is_powered(hdev)) { 5130 hci_dev_change_flag(hdev, HCI_FAST_CONNECTABLE); 5131 err = send_settings_rsp(sk, MGMT_OP_SET_FAST_CONNECTABLE, 5132 hdev); 5133 new_settings(hdev, sk); 5134 goto unlock; 5135 } 5136 5137 cmd = mgmt_pending_add(sk, MGMT_OP_SET_FAST_CONNECTABLE, hdev, 5138 data, len); 5139 if (!cmd) { 5140 err = -ENOMEM; 5141 goto unlock; 5142 } 5143 5144 hci_req_init(&req, hdev); 5145 5146 write_fast_connectable(&req, cp->val); 5147 5148 err = hci_req_run(&req, fast_connectable_complete); 5149 if (err < 0) { 5150 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE, 5151 MGMT_STATUS_FAILED); 5152 mgmt_pending_remove(cmd); 5153 } 5154 5155 unlock: 5156 hci_dev_unlock(hdev); 5157 5158 return err; 5159 } 5160 5161 static void set_bredr_complete(struct hci_dev *hdev, u8 status, u16 opcode) 5162 { 5163 struct mgmt_pending_cmd *cmd; 5164 5165 BT_DBG("status 0x%02x", status); 5166 5167 hci_dev_lock(hdev); 5168 5169 cmd = pending_find(MGMT_OP_SET_BREDR, hdev); 5170 if (!cmd) 5171 goto unlock; 5172 5173 if (status) { 5174 u8 mgmt_err = mgmt_status(status); 5175 5176 /* We need to restore the flag if related HCI commands 5177 * failed. 5178 */ 5179 hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED); 5180 5181 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, mgmt_err); 5182 } else { 5183 send_settings_rsp(cmd->sk, MGMT_OP_SET_BREDR, hdev); 5184 new_settings(hdev, cmd->sk); 5185 } 5186 5187 mgmt_pending_remove(cmd); 5188 5189 unlock: 5190 hci_dev_unlock(hdev); 5191 } 5192 5193 static int set_bredr(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) 5194 { 5195 struct mgmt_mode *cp = data; 5196 struct mgmt_pending_cmd *cmd; 5197 struct hci_request req; 5198 int err; 5199 5200 BT_DBG("request for %s", hdev->name); 5201 5202 if (!lmp_bredr_capable(hdev) || !lmp_le_capable(hdev)) 5203 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR, 5204 MGMT_STATUS_NOT_SUPPORTED); 5205 5206 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED)) 5207 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR, 5208 MGMT_STATUS_REJECTED); 5209 5210 if (cp->val != 0x00 && cp->val != 0x01) 5211 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR, 5212 MGMT_STATUS_INVALID_PARAMS); 5213 5214 hci_dev_lock(hdev); 5215 5216 if (cp->val == hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { 5217 err = send_settings_rsp(sk, MGMT_OP_SET_BREDR, hdev); 5218 goto unlock; 5219 } 5220 5221 if (!hdev_is_powered(hdev)) { 5222 if (!cp->val) { 5223 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); 5224 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED); 5225 hci_dev_clear_flag(hdev, HCI_LINK_SECURITY); 5226 hci_dev_clear_flag(hdev, HCI_FAST_CONNECTABLE); 5227 hci_dev_clear_flag(hdev, HCI_HS_ENABLED); 5228 } 5229 5230 hci_dev_change_flag(hdev, HCI_BREDR_ENABLED); 5231 5232 err = send_settings_rsp(sk, MGMT_OP_SET_BREDR, hdev); 5233 if (err < 0) 5234 goto unlock; 5235 5236 err = new_settings(hdev, sk); 5237 goto unlock; 5238 } 5239 5240 /* Reject disabling when powered on */ 5241 if (!cp->val) { 5242 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR, 5243 MGMT_STATUS_REJECTED); 5244 goto unlock; 5245 } else { 5246 /* When configuring a dual-mode controller to operate 5247 * with LE only and using a static address, then switching 5248 * BR/EDR back on is not allowed. 5249 * 5250 * Dual-mode controllers shall operate with the public 5251 * address as its identity address for BR/EDR and LE. So 5252 * reject the attempt to create an invalid configuration. 5253 * 5254 * The same restrictions applies when secure connections 5255 * has been enabled. For BR/EDR this is a controller feature 5256 * while for LE it is a host stack feature. This means that 5257 * switching BR/EDR back on when secure connections has been 5258 * enabled is not a supported transaction. 5259 */ 5260 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && 5261 (bacmp(&hdev->static_addr, BDADDR_ANY) || 5262 hci_dev_test_flag(hdev, HCI_SC_ENABLED))) { 5263 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR, 5264 MGMT_STATUS_REJECTED); 5265 goto unlock; 5266 } 5267 } 5268 5269 if (pending_find(MGMT_OP_SET_BREDR, hdev)) { 5270 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR, 5271 MGMT_STATUS_BUSY); 5272 goto unlock; 5273 } 5274 5275 cmd = mgmt_pending_add(sk, MGMT_OP_SET_BREDR, hdev, data, len); 5276 if (!cmd) { 5277 err = -ENOMEM; 5278 goto unlock; 5279 } 5280 5281 /* We need to flip the bit already here so that update_adv_data 5282 * generates the correct flags. 5283 */ 5284 hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); 5285 5286 hci_req_init(&req, hdev); 5287 5288 write_fast_connectable(&req, false); 5289 __hci_update_page_scan(&req); 5290 5291 /* Since only the advertising data flags will change, there 5292 * is no need to update the scan response data. 5293 */ 5294 update_adv_data(&req); 5295 5296 err = hci_req_run(&req, set_bredr_complete); 5297 if (err < 0) 5298 mgmt_pending_remove(cmd); 5299 5300 unlock: 5301 hci_dev_unlock(hdev); 5302 return err; 5303 } 5304 5305 static void sc_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode) 5306 { 5307 struct mgmt_pending_cmd *cmd; 5308 struct mgmt_mode *cp; 5309 5310 BT_DBG("%s status %u", hdev->name, status); 5311 5312 hci_dev_lock(hdev); 5313 5314 cmd = pending_find(MGMT_OP_SET_SECURE_CONN, hdev); 5315 if (!cmd) 5316 goto unlock; 5317 5318 if (status) { 5319 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, 5320 mgmt_status(status)); 5321 goto remove; 5322 } 5323 5324 cp = cmd->param; 5325 5326 switch (cp->val) { 5327 case 0x00: 5328 hci_dev_clear_flag(hdev, HCI_SC_ENABLED); 5329 hci_dev_clear_flag(hdev, HCI_SC_ONLY); 5330 break; 5331 case 0x01: 5332 hci_dev_set_flag(hdev, HCI_SC_ENABLED); 5333 hci_dev_clear_flag(hdev, HCI_SC_ONLY); 5334 break; 5335 case 0x02: 5336 hci_dev_set_flag(hdev, HCI_SC_ENABLED); 5337 hci_dev_set_flag(hdev, HCI_SC_ONLY); 5338 break; 5339 } 5340 5341 send_settings_rsp(cmd->sk, MGMT_OP_SET_SECURE_CONN, hdev); 5342 new_settings(hdev, cmd->sk); 5343 5344 remove: 5345 mgmt_pending_remove(cmd); 5346 unlock: 5347 hci_dev_unlock(hdev); 5348 } 5349 5350 static int set_secure_conn(struct sock *sk, struct hci_dev *hdev, 5351 void *data, u16 len) 5352 { 5353 struct mgmt_mode *cp = data; 5354 struct mgmt_pending_cmd *cmd; 5355 struct hci_request req; 5356 u8 val; 5357 int err; 5358 5359 BT_DBG("request for %s", hdev->name); 5360 5361 if (!lmp_sc_capable(hdev) && 5362 !hci_dev_test_flag(hdev, HCI_LE_ENABLED)) 5363 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN, 5364 MGMT_STATUS_NOT_SUPPORTED); 5365 5366 if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && 5367 lmp_sc_capable(hdev) && 5368 !hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) 5369 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN, 5370 MGMT_STATUS_REJECTED); 5371 5372 if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02) 5373 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN, 5374 MGMT_STATUS_INVALID_PARAMS); 5375 5376 hci_dev_lock(hdev); 5377 5378 if (!hdev_is_powered(hdev) || !lmp_sc_capable(hdev) || 5379 !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { 5380 bool changed; 5381 5382 if (cp->val) { 5383 changed = !hci_dev_test_and_set_flag(hdev, 5384 HCI_SC_ENABLED); 5385 if (cp->val == 0x02) 5386 hci_dev_set_flag(hdev, HCI_SC_ONLY); 5387 else 5388 hci_dev_clear_flag(hdev, HCI_SC_ONLY); 5389 } else { 5390 changed = hci_dev_test_and_clear_flag(hdev, 5391 HCI_SC_ENABLED); 5392 hci_dev_clear_flag(hdev, HCI_SC_ONLY); 5393 } 5394 5395 err = send_settings_rsp(sk, MGMT_OP_SET_SECURE_CONN, hdev); 5396 if (err < 0) 5397 goto failed; 5398 5399 if (changed) 5400 err = new_settings(hdev, sk); 5401 5402 goto failed; 5403 } 5404 5405 if (pending_find(MGMT_OP_SET_SECURE_CONN, hdev)) { 5406 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN, 5407 MGMT_STATUS_BUSY); 5408 goto failed; 5409 } 5410 5411 val = !!cp->val; 5412 5413 if (val == hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 5414 (cp->val == 0x02) == hci_dev_test_flag(hdev, HCI_SC_ONLY)) { 5415 err = send_settings_rsp(sk, MGMT_OP_SET_SECURE_CONN, hdev); 5416 goto failed; 5417 } 5418 5419 cmd = mgmt_pending_add(sk, MGMT_OP_SET_SECURE_CONN, hdev, data, len); 5420 if (!cmd) { 5421 err = -ENOMEM; 5422 goto failed; 5423 } 5424 5425 hci_req_init(&req, hdev); 5426 hci_req_add(&req, HCI_OP_WRITE_SC_SUPPORT, 1, &val); 5427 err = hci_req_run(&req, sc_enable_complete); 5428 if (err < 0) { 5429 mgmt_pending_remove(cmd); 5430 goto failed; 5431 } 5432 5433 failed: 5434 hci_dev_unlock(hdev); 5435 return err; 5436 } 5437 5438 static int set_debug_keys(struct sock *sk, struct hci_dev *hdev, 5439 void *data, u16 len) 5440 { 5441 struct mgmt_mode *cp = data; 5442 bool changed, use_changed; 5443 int err; 5444 5445 BT_DBG("request for %s", hdev->name); 5446 5447 if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02) 5448 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEBUG_KEYS, 5449 MGMT_STATUS_INVALID_PARAMS); 5450 5451 hci_dev_lock(hdev); 5452 5453 if (cp->val) 5454 changed = !hci_dev_test_and_set_flag(hdev, HCI_KEEP_DEBUG_KEYS); 5455 else 5456 changed = hci_dev_test_and_clear_flag(hdev, 5457 HCI_KEEP_DEBUG_KEYS); 5458 5459 if (cp->val == 0x02) 5460 use_changed = !hci_dev_test_and_set_flag(hdev, 5461 HCI_USE_DEBUG_KEYS); 5462 else 5463 use_changed = hci_dev_test_and_clear_flag(hdev, 5464 HCI_USE_DEBUG_KEYS); 5465 5466 if (hdev_is_powered(hdev) && use_changed && 5467 hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { 5468 u8 mode = (cp->val == 0x02) ? 0x01 : 0x00; 5469 hci_send_cmd(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE, 5470 sizeof(mode), &mode); 5471 } 5472 5473 err = send_settings_rsp(sk, MGMT_OP_SET_DEBUG_KEYS, hdev); 5474 if (err < 0) 5475 goto unlock; 5476 5477 if (changed) 5478 err = new_settings(hdev, sk); 5479 5480 unlock: 5481 hci_dev_unlock(hdev); 5482 return err; 5483 } 5484 5485 static int set_privacy(struct sock *sk, struct hci_dev *hdev, void *cp_data, 5486 u16 len) 5487 { 5488 struct mgmt_cp_set_privacy *cp = cp_data; 5489 bool changed; 5490 int err; 5491 5492 BT_DBG("request for %s", hdev->name); 5493 5494 if (!lmp_le_capable(hdev)) 5495 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY, 5496 MGMT_STATUS_NOT_SUPPORTED); 5497 5498 if (cp->privacy != 0x00 && cp->privacy != 0x01) 5499 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY, 5500 MGMT_STATUS_INVALID_PARAMS); 5501 5502 if (hdev_is_powered(hdev)) 5503 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY, 5504 MGMT_STATUS_REJECTED); 5505 5506 hci_dev_lock(hdev); 5507 5508 /* If user space supports this command it is also expected to 5509 * handle IRKs. Therefore, set the HCI_RPA_RESOLVING flag. 5510 */ 5511 hci_dev_set_flag(hdev, HCI_RPA_RESOLVING); 5512 5513 if (cp->privacy) { 5514 changed = !hci_dev_test_and_set_flag(hdev, HCI_PRIVACY); 5515 memcpy(hdev->irk, cp->irk, sizeof(hdev->irk)); 5516 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); 5517 } else { 5518 changed = hci_dev_test_and_clear_flag(hdev, HCI_PRIVACY); 5519 memset(hdev->irk, 0, sizeof(hdev->irk)); 5520 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED); 5521 } 5522 5523 err = send_settings_rsp(sk, MGMT_OP_SET_PRIVACY, hdev); 5524 if (err < 0) 5525 goto unlock; 5526 5527 if (changed) 5528 err = new_settings(hdev, sk); 5529 5530 unlock: 5531 hci_dev_unlock(hdev); 5532 return err; 5533 } 5534 5535 static bool irk_is_valid(struct mgmt_irk_info *irk) 5536 { 5537 switch (irk->addr.type) { 5538 case BDADDR_LE_PUBLIC: 5539 return true; 5540 5541 case BDADDR_LE_RANDOM: 5542 /* Two most significant bits shall be set */ 5543 if ((irk->addr.bdaddr.b[5] & 0xc0) != 0xc0) 5544 return false; 5545 return true; 5546 } 5547 5548 return false; 5549 } 5550 5551 static int load_irks(struct sock *sk, struct hci_dev *hdev, void *cp_data, 5552 u16 len) 5553 { 5554 struct mgmt_cp_load_irks *cp = cp_data; 5555 const u16 max_irk_count = ((U16_MAX - sizeof(*cp)) / 5556 sizeof(struct mgmt_irk_info)); 5557 u16 irk_count, expected_len; 5558 int i, err; 5559 5560 BT_DBG("request for %s", hdev->name); 5561 5562 if (!lmp_le_capable(hdev)) 5563 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS, 5564 MGMT_STATUS_NOT_SUPPORTED); 5565 5566 irk_count = __le16_to_cpu(cp->irk_count); 5567 if (irk_count > max_irk_count) { 5568 BT_ERR("load_irks: too big irk_count value %u", irk_count); 5569 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS, 5570 MGMT_STATUS_INVALID_PARAMS); 5571 } 5572 5573 expected_len = sizeof(*cp) + irk_count * sizeof(struct mgmt_irk_info); 5574 if (expected_len != len) { 5575 BT_ERR("load_irks: expected %u bytes, got %u bytes", 5576 expected_len, len); 5577 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS, 5578 MGMT_STATUS_INVALID_PARAMS); 5579 } 5580 5581 BT_DBG("%s irk_count %u", hdev->name, irk_count); 5582 5583 for (i = 0; i < irk_count; i++) { 5584 struct mgmt_irk_info *key = &cp->irks[i]; 5585 5586 if (!irk_is_valid(key)) 5587 return mgmt_cmd_status(sk, hdev->id, 5588 MGMT_OP_LOAD_IRKS, 5589 MGMT_STATUS_INVALID_PARAMS); 5590 } 5591 5592 hci_dev_lock(hdev); 5593 5594 hci_smp_irks_clear(hdev); 5595 5596 for (i = 0; i < irk_count; i++) { 5597 struct mgmt_irk_info *irk = &cp->irks[i]; 5598 u8 addr_type; 5599 5600 if (irk->addr.type == BDADDR_LE_PUBLIC) 5601 addr_type = ADDR_LE_DEV_PUBLIC; 5602 else 5603 addr_type = ADDR_LE_DEV_RANDOM; 5604 5605 hci_add_irk(hdev, &irk->addr.bdaddr, addr_type, irk->val, 5606 BDADDR_ANY); 5607 } 5608 5609 hci_dev_set_flag(hdev, HCI_RPA_RESOLVING); 5610 5611 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_IRKS, 0, NULL, 0); 5612 5613 hci_dev_unlock(hdev); 5614 5615 return err; 5616 } 5617 5618 static bool ltk_is_valid(struct mgmt_ltk_info *key) 5619 { 5620 if (key->master != 0x00 && key->master != 0x01) 5621 return false; 5622 5623 switch (key->addr.type) { 5624 case BDADDR_LE_PUBLIC: 5625 return true; 5626 5627 case BDADDR_LE_RANDOM: 5628 /* Two most significant bits shall be set */ 5629 if ((key->addr.bdaddr.b[5] & 0xc0) != 0xc0) 5630 return false; 5631 return true; 5632 } 5633 5634 return false; 5635 } 5636 5637 static int load_long_term_keys(struct sock *sk, struct hci_dev *hdev, 5638 void *cp_data, u16 len) 5639 { 5640 struct mgmt_cp_load_long_term_keys *cp = cp_data; 5641 const u16 max_key_count = ((U16_MAX - sizeof(*cp)) / 5642 sizeof(struct mgmt_ltk_info)); 5643 u16 key_count, expected_len; 5644 int i, err; 5645 5646 BT_DBG("request for %s", hdev->name); 5647 5648 if (!lmp_le_capable(hdev)) 5649 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS, 5650 MGMT_STATUS_NOT_SUPPORTED); 5651 5652 key_count = __le16_to_cpu(cp->key_count); 5653 if (key_count > max_key_count) { 5654 BT_ERR("load_ltks: too big key_count value %u", key_count); 5655 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS, 5656 MGMT_STATUS_INVALID_PARAMS); 5657 } 5658 5659 expected_len = sizeof(*cp) + key_count * 5660 sizeof(struct mgmt_ltk_info); 5661 if (expected_len != len) { 5662 BT_ERR("load_keys: expected %u bytes, got %u bytes", 5663 expected_len, len); 5664 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS, 5665 MGMT_STATUS_INVALID_PARAMS); 5666 } 5667 5668 BT_DBG("%s key_count %u", hdev->name, key_count); 5669 5670 for (i = 0; i < key_count; i++) { 5671 struct mgmt_ltk_info *key = &cp->keys[i]; 5672 5673 if (!ltk_is_valid(key)) 5674 return mgmt_cmd_status(sk, hdev->id, 5675 MGMT_OP_LOAD_LONG_TERM_KEYS, 5676 MGMT_STATUS_INVALID_PARAMS); 5677 } 5678 5679 hci_dev_lock(hdev); 5680 5681 hci_smp_ltks_clear(hdev); 5682 5683 for (i = 0; i < key_count; i++) { 5684 struct mgmt_ltk_info *key = &cp->keys[i]; 5685 u8 type, addr_type, authenticated; 5686 5687 if (key->addr.type == BDADDR_LE_PUBLIC) 5688 addr_type = ADDR_LE_DEV_PUBLIC; 5689 else 5690 addr_type = ADDR_LE_DEV_RANDOM; 5691 5692 switch (key->type) { 5693 case MGMT_LTK_UNAUTHENTICATED: 5694 authenticated = 0x00; 5695 type = key->master ? SMP_LTK : SMP_LTK_SLAVE; 5696 break; 5697 case MGMT_LTK_AUTHENTICATED: 5698 authenticated = 0x01; 5699 type = key->master ? SMP_LTK : SMP_LTK_SLAVE; 5700 break; 5701 case MGMT_LTK_P256_UNAUTH: 5702 authenticated = 0x00; 5703 type = SMP_LTK_P256; 5704 break; 5705 case MGMT_LTK_P256_AUTH: 5706 authenticated = 0x01; 5707 type = SMP_LTK_P256; 5708 break; 5709 case MGMT_LTK_P256_DEBUG: 5710 authenticated = 0x00; 5711 type = SMP_LTK_P256_DEBUG; 5712 default: 5713 continue; 5714 } 5715 5716 hci_add_ltk(hdev, &key->addr.bdaddr, addr_type, type, 5717 authenticated, key->val, key->enc_size, key->ediv, 5718 key->rand); 5719 } 5720 5721 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS, 0, 5722 NULL, 0); 5723 5724 hci_dev_unlock(hdev); 5725 5726 return err; 5727 } 5728 5729 static int conn_info_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status) 5730 { 5731 struct hci_conn *conn = cmd->user_data; 5732 struct mgmt_rp_get_conn_info rp; 5733 int err; 5734 5735 memcpy(&rp.addr, cmd->param, sizeof(rp.addr)); 5736 5737 if (status == MGMT_STATUS_SUCCESS) { 5738 rp.rssi = conn->rssi; 5739 rp.tx_power = conn->tx_power; 5740 rp.max_tx_power = conn->max_tx_power; 5741 } else { 5742 rp.rssi = HCI_RSSI_INVALID; 5743 rp.tx_power = HCI_TX_POWER_INVALID; 5744 rp.max_tx_power = HCI_TX_POWER_INVALID; 5745 } 5746 5747 err = mgmt_cmd_complete(cmd->sk, cmd->index, MGMT_OP_GET_CONN_INFO, 5748 status, &rp, sizeof(rp)); 5749 5750 hci_conn_drop(conn); 5751 hci_conn_put(conn); 5752 5753 return err; 5754 } 5755 5756 static void conn_info_refresh_complete(struct hci_dev *hdev, u8 hci_status, 5757 u16 opcode) 5758 { 5759 struct hci_cp_read_rssi *cp; 5760 struct mgmt_pending_cmd *cmd; 5761 struct hci_conn *conn; 5762 u16 handle; 5763 u8 status; 5764 5765 BT_DBG("status 0x%02x", hci_status); 5766 5767 hci_dev_lock(hdev); 5768 5769 /* Commands sent in request are either Read RSSI or Read Transmit Power 5770 * Level so we check which one was last sent to retrieve connection 5771 * handle. Both commands have handle as first parameter so it's safe to 5772 * cast data on the same command struct. 5773 * 5774 * First command sent is always Read RSSI and we fail only if it fails. 5775 * In other case we simply override error to indicate success as we 5776 * already remembered if TX power value is actually valid. 5777 */ 5778 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_RSSI); 5779 if (!cp) { 5780 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER); 5781 status = MGMT_STATUS_SUCCESS; 5782 } else { 5783 status = mgmt_status(hci_status); 5784 } 5785 5786 if (!cp) { 5787 BT_ERR("invalid sent_cmd in conn_info response"); 5788 goto unlock; 5789 } 5790 5791 handle = __le16_to_cpu(cp->handle); 5792 conn = hci_conn_hash_lookup_handle(hdev, handle); 5793 if (!conn) { 5794 BT_ERR("unknown handle (%d) in conn_info response", handle); 5795 goto unlock; 5796 } 5797 5798 cmd = pending_find_data(MGMT_OP_GET_CONN_INFO, hdev, conn); 5799 if (!cmd) 5800 goto unlock; 5801 5802 cmd->cmd_complete(cmd, status); 5803 mgmt_pending_remove(cmd); 5804 5805 unlock: 5806 hci_dev_unlock(hdev); 5807 } 5808 5809 static int get_conn_info(struct sock *sk, struct hci_dev *hdev, void *data, 5810 u16 len) 5811 { 5812 struct mgmt_cp_get_conn_info *cp = data; 5813 struct mgmt_rp_get_conn_info rp; 5814 struct hci_conn *conn; 5815 unsigned long conn_info_age; 5816 int err = 0; 5817 5818 BT_DBG("%s", hdev->name); 5819 5820 memset(&rp, 0, sizeof(rp)); 5821 bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr); 5822 rp.addr.type = cp->addr.type; 5823 5824 if (!bdaddr_type_is_valid(cp->addr.type)) 5825 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO, 5826 MGMT_STATUS_INVALID_PARAMS, 5827 &rp, sizeof(rp)); 5828 5829 hci_dev_lock(hdev); 5830 5831 if (!hdev_is_powered(hdev)) { 5832 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO, 5833 MGMT_STATUS_NOT_POWERED, &rp, 5834 sizeof(rp)); 5835 goto unlock; 5836 } 5837 5838 if (cp->addr.type == BDADDR_BREDR) 5839 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, 5840 &cp->addr.bdaddr); 5841 else 5842 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &cp->addr.bdaddr); 5843 5844 if (!conn || conn->state != BT_CONNECTED) { 5845 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO, 5846 MGMT_STATUS_NOT_CONNECTED, &rp, 5847 sizeof(rp)); 5848 goto unlock; 5849 } 5850 5851 if (pending_find_data(MGMT_OP_GET_CONN_INFO, hdev, conn)) { 5852 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO, 5853 MGMT_STATUS_BUSY, &rp, sizeof(rp)); 5854 goto unlock; 5855 } 5856 5857 /* To avoid client trying to guess when to poll again for information we 5858 * calculate conn info age as random value between min/max set in hdev. 5859 */ 5860 conn_info_age = hdev->conn_info_min_age + 5861 prandom_u32_max(hdev->conn_info_max_age - 5862 hdev->conn_info_min_age); 5863 5864 /* Query controller to refresh cached values if they are too old or were 5865 * never read. 5866 */ 5867 if (time_after(jiffies, conn->conn_info_timestamp + 5868 msecs_to_jiffies(conn_info_age)) || 5869 !conn->conn_info_timestamp) { 5870 struct hci_request req; 5871 struct hci_cp_read_tx_power req_txp_cp; 5872 struct hci_cp_read_rssi req_rssi_cp; 5873 struct mgmt_pending_cmd *cmd; 5874 5875 hci_req_init(&req, hdev); 5876 req_rssi_cp.handle = cpu_to_le16(conn->handle); 5877 hci_req_add(&req, HCI_OP_READ_RSSI, sizeof(req_rssi_cp), 5878 &req_rssi_cp); 5879 5880 /* For LE links TX power does not change thus we don't need to 5881 * query for it once value is known. 5882 */ 5883 if (!bdaddr_type_is_le(cp->addr.type) || 5884 conn->tx_power == HCI_TX_POWER_INVALID) { 5885 req_txp_cp.handle = cpu_to_le16(conn->handle); 5886 req_txp_cp.type = 0x00; 5887 hci_req_add(&req, HCI_OP_READ_TX_POWER, 5888 sizeof(req_txp_cp), &req_txp_cp); 5889 } 5890 5891 /* Max TX power needs to be read only once per connection */ 5892 if (conn->max_tx_power == HCI_TX_POWER_INVALID) { 5893 req_txp_cp.handle = cpu_to_le16(conn->handle); 5894 req_txp_cp.type = 0x01; 5895 hci_req_add(&req, HCI_OP_READ_TX_POWER, 5896 sizeof(req_txp_cp), &req_txp_cp); 5897 } 5898 5899 err = hci_req_run(&req, conn_info_refresh_complete); 5900 if (err < 0) 5901 goto unlock; 5902 5903 cmd = mgmt_pending_add(sk, MGMT_OP_GET_CONN_INFO, hdev, 5904 data, len); 5905 if (!cmd) { 5906 err = -ENOMEM; 5907 goto unlock; 5908 } 5909 5910 hci_conn_hold(conn); 5911 cmd->user_data = hci_conn_get(conn); 5912 cmd->cmd_complete = conn_info_cmd_complete; 5913 5914 conn->conn_info_timestamp = jiffies; 5915 } else { 5916 /* Cache is valid, just reply with values cached in hci_conn */ 5917 rp.rssi = conn->rssi; 5918 rp.tx_power = conn->tx_power; 5919 rp.max_tx_power = conn->max_tx_power; 5920 5921 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO, 5922 MGMT_STATUS_SUCCESS, &rp, sizeof(rp)); 5923 } 5924 5925 unlock: 5926 hci_dev_unlock(hdev); 5927 return err; 5928 } 5929 5930 static int clock_info_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status) 5931 { 5932 struct hci_conn *conn = cmd->user_data; 5933 struct mgmt_rp_get_clock_info rp; 5934 struct hci_dev *hdev; 5935 int err; 5936 5937 memset(&rp, 0, sizeof(rp)); 5938 memcpy(&rp.addr, &cmd->param, sizeof(rp.addr)); 5939 5940 if (status) 5941 goto complete; 5942 5943 hdev = hci_dev_get(cmd->index); 5944 if (hdev) { 5945 rp.local_clock = cpu_to_le32(hdev->clock); 5946 hci_dev_put(hdev); 5947 } 5948 5949 if (conn) { 5950 rp.piconet_clock = cpu_to_le32(conn->clock); 5951 rp.accuracy = cpu_to_le16(conn->clock_accuracy); 5952 } 5953 5954 complete: 5955 err = mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status, &rp, 5956 sizeof(rp)); 5957 5958 if (conn) { 5959 hci_conn_drop(conn); 5960 hci_conn_put(conn); 5961 } 5962 5963 return err; 5964 } 5965 5966 static void get_clock_info_complete(struct hci_dev *hdev, u8 status, u16 opcode) 5967 { 5968 struct hci_cp_read_clock *hci_cp; 5969 struct mgmt_pending_cmd *cmd; 5970 struct hci_conn *conn; 5971 5972 BT_DBG("%s status %u", hdev->name, status); 5973 5974 hci_dev_lock(hdev); 5975 5976 hci_cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK); 5977 if (!hci_cp) 5978 goto unlock; 5979 5980 if (hci_cp->which) { 5981 u16 handle = __le16_to_cpu(hci_cp->handle); 5982 conn = hci_conn_hash_lookup_handle(hdev, handle); 5983 } else { 5984 conn = NULL; 5985 } 5986 5987 cmd = pending_find_data(MGMT_OP_GET_CLOCK_INFO, hdev, conn); 5988 if (!cmd) 5989 goto unlock; 5990 5991 cmd->cmd_complete(cmd, mgmt_status(status)); 5992 mgmt_pending_remove(cmd); 5993 5994 unlock: 5995 hci_dev_unlock(hdev); 5996 } 5997 5998 static int get_clock_info(struct sock *sk, struct hci_dev *hdev, void *data, 5999 u16 len) 6000 { 6001 struct mgmt_cp_get_clock_info *cp = data; 6002 struct mgmt_rp_get_clock_info rp; 6003 struct hci_cp_read_clock hci_cp; 6004 struct mgmt_pending_cmd *cmd; 6005 struct hci_request req; 6006 struct hci_conn *conn; 6007 int err; 6008 6009 BT_DBG("%s", hdev->name); 6010 6011 memset(&rp, 0, sizeof(rp)); 6012 bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr); 6013 rp.addr.type = cp->addr.type; 6014 6015 if (cp->addr.type != BDADDR_BREDR) 6016 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CLOCK_INFO, 6017 MGMT_STATUS_INVALID_PARAMS, 6018 &rp, sizeof(rp)); 6019 6020 hci_dev_lock(hdev); 6021 6022 if (!hdev_is_powered(hdev)) { 6023 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CLOCK_INFO, 6024 MGMT_STATUS_NOT_POWERED, &rp, 6025 sizeof(rp)); 6026 goto unlock; 6027 } 6028 6029 if (bacmp(&cp->addr.bdaddr, BDADDR_ANY)) { 6030 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, 6031 &cp->addr.bdaddr); 6032 if (!conn || conn->state != BT_CONNECTED) { 6033 err = mgmt_cmd_complete(sk, hdev->id, 6034 MGMT_OP_GET_CLOCK_INFO, 6035 MGMT_STATUS_NOT_CONNECTED, 6036 &rp, sizeof(rp)); 6037 goto unlock; 6038 } 6039 } else { 6040 conn = NULL; 6041 } 6042 6043 cmd = mgmt_pending_add(sk, MGMT_OP_GET_CLOCK_INFO, hdev, data, len); 6044 if (!cmd) { 6045 err = -ENOMEM; 6046 goto unlock; 6047 } 6048 6049 cmd->cmd_complete = clock_info_cmd_complete; 6050 6051 hci_req_init(&req, hdev); 6052 6053 memset(&hci_cp, 0, sizeof(hci_cp)); 6054 hci_req_add(&req, HCI_OP_READ_CLOCK, sizeof(hci_cp), &hci_cp); 6055 6056 if (conn) { 6057 hci_conn_hold(conn); 6058 cmd->user_data = hci_conn_get(conn); 6059 6060 hci_cp.handle = cpu_to_le16(conn->handle); 6061 hci_cp.which = 0x01; /* Piconet clock */ 6062 hci_req_add(&req, HCI_OP_READ_CLOCK, sizeof(hci_cp), &hci_cp); 6063 } 6064 6065 err = hci_req_run(&req, get_clock_info_complete); 6066 if (err < 0) 6067 mgmt_pending_remove(cmd); 6068 6069 unlock: 6070 hci_dev_unlock(hdev); 6071 return err; 6072 } 6073 6074 static bool is_connected(struct hci_dev *hdev, bdaddr_t *addr, u8 type) 6075 { 6076 struct hci_conn *conn; 6077 6078 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, addr); 6079 if (!conn) 6080 return false; 6081 6082 if (conn->dst_type != type) 6083 return false; 6084 6085 if (conn->state != BT_CONNECTED) 6086 return false; 6087 6088 return true; 6089 } 6090 6091 /* This function requires the caller holds hdev->lock */ 6092 static int hci_conn_params_set(struct hci_request *req, bdaddr_t *addr, 6093 u8 addr_type, u8 auto_connect) 6094 { 6095 struct hci_dev *hdev = req->hdev; 6096 struct hci_conn_params *params; 6097 6098 params = hci_conn_params_add(hdev, addr, addr_type); 6099 if (!params) 6100 return -EIO; 6101 6102 if (params->auto_connect == auto_connect) 6103 return 0; 6104 6105 list_del_init(¶ms->action); 6106 6107 switch (auto_connect) { 6108 case HCI_AUTO_CONN_DISABLED: 6109 case HCI_AUTO_CONN_LINK_LOSS: 6110 __hci_update_background_scan(req); 6111 break; 6112 case HCI_AUTO_CONN_REPORT: 6113 list_add(¶ms->action, &hdev->pend_le_reports); 6114 __hci_update_background_scan(req); 6115 break; 6116 case HCI_AUTO_CONN_DIRECT: 6117 case HCI_AUTO_CONN_ALWAYS: 6118 if (!is_connected(hdev, addr, addr_type)) { 6119 list_add(¶ms->action, &hdev->pend_le_conns); 6120 __hci_update_background_scan(req); 6121 } 6122 break; 6123 } 6124 6125 params->auto_connect = auto_connect; 6126 6127 BT_DBG("addr %pMR (type %u) auto_connect %u", addr, addr_type, 6128 auto_connect); 6129 6130 return 0; 6131 } 6132 6133 static void device_added(struct sock *sk, struct hci_dev *hdev, 6134 bdaddr_t *bdaddr, u8 type, u8 action) 6135 { 6136 struct mgmt_ev_device_added ev; 6137 6138 bacpy(&ev.addr.bdaddr, bdaddr); 6139 ev.addr.type = type; 6140 ev.action = action; 6141 6142 mgmt_event(MGMT_EV_DEVICE_ADDED, hdev, &ev, sizeof(ev), sk); 6143 } 6144 6145 static void add_device_complete(struct hci_dev *hdev, u8 status, u16 opcode) 6146 { 6147 struct mgmt_pending_cmd *cmd; 6148 6149 BT_DBG("status 0x%02x", status); 6150 6151 hci_dev_lock(hdev); 6152 6153 cmd = pending_find(MGMT_OP_ADD_DEVICE, hdev); 6154 if (!cmd) 6155 goto unlock; 6156 6157 cmd->cmd_complete(cmd, mgmt_status(status)); 6158 mgmt_pending_remove(cmd); 6159 6160 unlock: 6161 hci_dev_unlock(hdev); 6162 } 6163 6164 static int add_device(struct sock *sk, struct hci_dev *hdev, 6165 void *data, u16 len) 6166 { 6167 struct mgmt_cp_add_device *cp = data; 6168 struct mgmt_pending_cmd *cmd; 6169 struct hci_request req; 6170 u8 auto_conn, addr_type; 6171 int err; 6172 6173 BT_DBG("%s", hdev->name); 6174 6175 if (!bdaddr_type_is_valid(cp->addr.type) || 6176 !bacmp(&cp->addr.bdaddr, BDADDR_ANY)) 6177 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_DEVICE, 6178 MGMT_STATUS_INVALID_PARAMS, 6179 &cp->addr, sizeof(cp->addr)); 6180 6181 if (cp->action != 0x00 && cp->action != 0x01 && cp->action != 0x02) 6182 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_DEVICE, 6183 MGMT_STATUS_INVALID_PARAMS, 6184 &cp->addr, sizeof(cp->addr)); 6185 6186 hci_req_init(&req, hdev); 6187 6188 hci_dev_lock(hdev); 6189 6190 cmd = mgmt_pending_add(sk, MGMT_OP_ADD_DEVICE, hdev, data, len); 6191 if (!cmd) { 6192 err = -ENOMEM; 6193 goto unlock; 6194 } 6195 6196 cmd->cmd_complete = addr_cmd_complete; 6197 6198 if (cp->addr.type == BDADDR_BREDR) { 6199 /* Only incoming connections action is supported for now */ 6200 if (cp->action != 0x01) { 6201 err = cmd->cmd_complete(cmd, 6202 MGMT_STATUS_INVALID_PARAMS); 6203 mgmt_pending_remove(cmd); 6204 goto unlock; 6205 } 6206 6207 err = hci_bdaddr_list_add(&hdev->whitelist, &cp->addr.bdaddr, 6208 cp->addr.type); 6209 if (err) 6210 goto unlock; 6211 6212 __hci_update_page_scan(&req); 6213 6214 goto added; 6215 } 6216 6217 if (cp->addr.type == BDADDR_LE_PUBLIC) 6218 addr_type = ADDR_LE_DEV_PUBLIC; 6219 else 6220 addr_type = ADDR_LE_DEV_RANDOM; 6221 6222 if (cp->action == 0x02) 6223 auto_conn = HCI_AUTO_CONN_ALWAYS; 6224 else if (cp->action == 0x01) 6225 auto_conn = HCI_AUTO_CONN_DIRECT; 6226 else 6227 auto_conn = HCI_AUTO_CONN_REPORT; 6228 6229 /* If the connection parameters don't exist for this device, 6230 * they will be created and configured with defaults. 6231 */ 6232 if (hci_conn_params_set(&req, &cp->addr.bdaddr, addr_type, 6233 auto_conn) < 0) { 6234 err = cmd->cmd_complete(cmd, MGMT_STATUS_FAILED); 6235 mgmt_pending_remove(cmd); 6236 goto unlock; 6237 } 6238 6239 added: 6240 device_added(sk, hdev, &cp->addr.bdaddr, cp->addr.type, cp->action); 6241 6242 err = hci_req_run(&req, add_device_complete); 6243 if (err < 0) { 6244 /* ENODATA means no HCI commands were needed (e.g. if 6245 * the adapter is powered off). 6246 */ 6247 if (err == -ENODATA) 6248 err = cmd->cmd_complete(cmd, MGMT_STATUS_SUCCESS); 6249 mgmt_pending_remove(cmd); 6250 } 6251 6252 unlock: 6253 hci_dev_unlock(hdev); 6254 return err; 6255 } 6256 6257 static void device_removed(struct sock *sk, struct hci_dev *hdev, 6258 bdaddr_t *bdaddr, u8 type) 6259 { 6260 struct mgmt_ev_device_removed ev; 6261 6262 bacpy(&ev.addr.bdaddr, bdaddr); 6263 ev.addr.type = type; 6264 6265 mgmt_event(MGMT_EV_DEVICE_REMOVED, hdev, &ev, sizeof(ev), sk); 6266 } 6267 6268 static void remove_device_complete(struct hci_dev *hdev, u8 status, u16 opcode) 6269 { 6270 struct mgmt_pending_cmd *cmd; 6271 6272 BT_DBG("status 0x%02x", status); 6273 6274 hci_dev_lock(hdev); 6275 6276 cmd = pending_find(MGMT_OP_REMOVE_DEVICE, hdev); 6277 if (!cmd) 6278 goto unlock; 6279 6280 cmd->cmd_complete(cmd, mgmt_status(status)); 6281 mgmt_pending_remove(cmd); 6282 6283 unlock: 6284 hci_dev_unlock(hdev); 6285 } 6286 6287 static int remove_device(struct sock *sk, struct hci_dev *hdev, 6288 void *data, u16 len) 6289 { 6290 struct mgmt_cp_remove_device *cp = data; 6291 struct mgmt_pending_cmd *cmd; 6292 struct hci_request req; 6293 int err; 6294 6295 BT_DBG("%s", hdev->name); 6296 6297 hci_req_init(&req, hdev); 6298 6299 hci_dev_lock(hdev); 6300 6301 cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_DEVICE, hdev, data, len); 6302 if (!cmd) { 6303 err = -ENOMEM; 6304 goto unlock; 6305 } 6306 6307 cmd->cmd_complete = addr_cmd_complete; 6308 6309 if (bacmp(&cp->addr.bdaddr, BDADDR_ANY)) { 6310 struct hci_conn_params *params; 6311 u8 addr_type; 6312 6313 if (!bdaddr_type_is_valid(cp->addr.type)) { 6314 err = cmd->cmd_complete(cmd, 6315 MGMT_STATUS_INVALID_PARAMS); 6316 mgmt_pending_remove(cmd); 6317 goto unlock; 6318 } 6319 6320 if (cp->addr.type == BDADDR_BREDR) { 6321 err = hci_bdaddr_list_del(&hdev->whitelist, 6322 &cp->addr.bdaddr, 6323 cp->addr.type); 6324 if (err) { 6325 err = cmd->cmd_complete(cmd, 6326 MGMT_STATUS_INVALID_PARAMS); 6327 mgmt_pending_remove(cmd); 6328 goto unlock; 6329 } 6330 6331 __hci_update_page_scan(&req); 6332 6333 device_removed(sk, hdev, &cp->addr.bdaddr, 6334 cp->addr.type); 6335 goto complete; 6336 } 6337 6338 if (cp->addr.type == BDADDR_LE_PUBLIC) 6339 addr_type = ADDR_LE_DEV_PUBLIC; 6340 else 6341 addr_type = ADDR_LE_DEV_RANDOM; 6342 6343 params = hci_conn_params_lookup(hdev, &cp->addr.bdaddr, 6344 addr_type); 6345 if (!params) { 6346 err = cmd->cmd_complete(cmd, 6347 MGMT_STATUS_INVALID_PARAMS); 6348 mgmt_pending_remove(cmd); 6349 goto unlock; 6350 } 6351 6352 if (params->auto_connect == HCI_AUTO_CONN_DISABLED) { 6353 err = cmd->cmd_complete(cmd, 6354 MGMT_STATUS_INVALID_PARAMS); 6355 mgmt_pending_remove(cmd); 6356 goto unlock; 6357 } 6358 6359 list_del(¶ms->action); 6360 list_del(¶ms->list); 6361 kfree(params); 6362 __hci_update_background_scan(&req); 6363 6364 device_removed(sk, hdev, &cp->addr.bdaddr, cp->addr.type); 6365 } else { 6366 struct hci_conn_params *p, *tmp; 6367 struct bdaddr_list *b, *btmp; 6368 6369 if (cp->addr.type) { 6370 err = cmd->cmd_complete(cmd, 6371 MGMT_STATUS_INVALID_PARAMS); 6372 mgmt_pending_remove(cmd); 6373 goto unlock; 6374 } 6375 6376 list_for_each_entry_safe(b, btmp, &hdev->whitelist, list) { 6377 device_removed(sk, hdev, &b->bdaddr, b->bdaddr_type); 6378 list_del(&b->list); 6379 kfree(b); 6380 } 6381 6382 __hci_update_page_scan(&req); 6383 6384 list_for_each_entry_safe(p, tmp, &hdev->le_conn_params, list) { 6385 if (p->auto_connect == HCI_AUTO_CONN_DISABLED) 6386 continue; 6387 device_removed(sk, hdev, &p->addr, p->addr_type); 6388 list_del(&p->action); 6389 list_del(&p->list); 6390 kfree(p); 6391 } 6392 6393 BT_DBG("All LE connection parameters were removed"); 6394 6395 __hci_update_background_scan(&req); 6396 } 6397 6398 complete: 6399 err = hci_req_run(&req, remove_device_complete); 6400 if (err < 0) { 6401 /* ENODATA means no HCI commands were needed (e.g. if 6402 * the adapter is powered off). 6403 */ 6404 if (err == -ENODATA) 6405 err = cmd->cmd_complete(cmd, MGMT_STATUS_SUCCESS); 6406 mgmt_pending_remove(cmd); 6407 } 6408 6409 unlock: 6410 hci_dev_unlock(hdev); 6411 return err; 6412 } 6413 6414 static int load_conn_param(struct sock *sk, struct hci_dev *hdev, void *data, 6415 u16 len) 6416 { 6417 struct mgmt_cp_load_conn_param *cp = data; 6418 const u16 max_param_count = ((U16_MAX - sizeof(*cp)) / 6419 sizeof(struct mgmt_conn_param)); 6420 u16 param_count, expected_len; 6421 int i; 6422 6423 if (!lmp_le_capable(hdev)) 6424 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM, 6425 MGMT_STATUS_NOT_SUPPORTED); 6426 6427 param_count = __le16_to_cpu(cp->param_count); 6428 if (param_count > max_param_count) { 6429 BT_ERR("load_conn_param: too big param_count value %u", 6430 param_count); 6431 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM, 6432 MGMT_STATUS_INVALID_PARAMS); 6433 } 6434 6435 expected_len = sizeof(*cp) + param_count * 6436 sizeof(struct mgmt_conn_param); 6437 if (expected_len != len) { 6438 BT_ERR("load_conn_param: expected %u bytes, got %u bytes", 6439 expected_len, len); 6440 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM, 6441 MGMT_STATUS_INVALID_PARAMS); 6442 } 6443 6444 BT_DBG("%s param_count %u", hdev->name, param_count); 6445 6446 hci_dev_lock(hdev); 6447 6448 hci_conn_params_clear_disabled(hdev); 6449 6450 for (i = 0; i < param_count; i++) { 6451 struct mgmt_conn_param *param = &cp->params[i]; 6452 struct hci_conn_params *hci_param; 6453 u16 min, max, latency, timeout; 6454 u8 addr_type; 6455 6456 BT_DBG("Adding %pMR (type %u)", ¶m->addr.bdaddr, 6457 param->addr.type); 6458 6459 if (param->addr.type == BDADDR_LE_PUBLIC) { 6460 addr_type = ADDR_LE_DEV_PUBLIC; 6461 } else if (param->addr.type == BDADDR_LE_RANDOM) { 6462 addr_type = ADDR_LE_DEV_RANDOM; 6463 } else { 6464 BT_ERR("Ignoring invalid connection parameters"); 6465 continue; 6466 } 6467 6468 min = le16_to_cpu(param->min_interval); 6469 max = le16_to_cpu(param->max_interval); 6470 latency = le16_to_cpu(param->latency); 6471 timeout = le16_to_cpu(param->timeout); 6472 6473 BT_DBG("min 0x%04x max 0x%04x latency 0x%04x timeout 0x%04x", 6474 min, max, latency, timeout); 6475 6476 if (hci_check_conn_params(min, max, latency, timeout) < 0) { 6477 BT_ERR("Ignoring invalid connection parameters"); 6478 continue; 6479 } 6480 6481 hci_param = hci_conn_params_add(hdev, ¶m->addr.bdaddr, 6482 addr_type); 6483 if (!hci_param) { 6484 BT_ERR("Failed to add connection parameters"); 6485 continue; 6486 } 6487 6488 hci_param->conn_min_interval = min; 6489 hci_param->conn_max_interval = max; 6490 hci_param->conn_latency = latency; 6491 hci_param->supervision_timeout = timeout; 6492 } 6493 6494 hci_dev_unlock(hdev); 6495 6496 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM, 0, 6497 NULL, 0); 6498 } 6499 6500 static int set_external_config(struct sock *sk, struct hci_dev *hdev, 6501 void *data, u16 len) 6502 { 6503 struct mgmt_cp_set_external_config *cp = data; 6504 bool changed; 6505 int err; 6506 6507 BT_DBG("%s", hdev->name); 6508 6509 if (hdev_is_powered(hdev)) 6510 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG, 6511 MGMT_STATUS_REJECTED); 6512 6513 if (cp->config != 0x00 && cp->config != 0x01) 6514 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG, 6515 MGMT_STATUS_INVALID_PARAMS); 6516 6517 if (!test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks)) 6518 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG, 6519 MGMT_STATUS_NOT_SUPPORTED); 6520 6521 hci_dev_lock(hdev); 6522 6523 if (cp->config) 6524 changed = !hci_dev_test_and_set_flag(hdev, HCI_EXT_CONFIGURED); 6525 else 6526 changed = hci_dev_test_and_clear_flag(hdev, HCI_EXT_CONFIGURED); 6527 6528 err = send_options_rsp(sk, MGMT_OP_SET_EXTERNAL_CONFIG, hdev); 6529 if (err < 0) 6530 goto unlock; 6531 6532 if (!changed) 6533 goto unlock; 6534 6535 err = new_options(hdev, sk); 6536 6537 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) == is_configured(hdev)) { 6538 mgmt_index_removed(hdev); 6539 6540 if (hci_dev_test_and_change_flag(hdev, HCI_UNCONFIGURED)) { 6541 hci_dev_set_flag(hdev, HCI_CONFIG); 6542 hci_dev_set_flag(hdev, HCI_AUTO_OFF); 6543 6544 queue_work(hdev->req_workqueue, &hdev->power_on); 6545 } else { 6546 set_bit(HCI_RAW, &hdev->flags); 6547 mgmt_index_added(hdev); 6548 } 6549 } 6550 6551 unlock: 6552 hci_dev_unlock(hdev); 6553 return err; 6554 } 6555 6556 static int set_public_address(struct sock *sk, struct hci_dev *hdev, 6557 void *data, u16 len) 6558 { 6559 struct mgmt_cp_set_public_address *cp = data; 6560 bool changed; 6561 int err; 6562 6563 BT_DBG("%s", hdev->name); 6564 6565 if (hdev_is_powered(hdev)) 6566 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS, 6567 MGMT_STATUS_REJECTED); 6568 6569 if (!bacmp(&cp->bdaddr, BDADDR_ANY)) 6570 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS, 6571 MGMT_STATUS_INVALID_PARAMS); 6572 6573 if (!hdev->set_bdaddr) 6574 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS, 6575 MGMT_STATUS_NOT_SUPPORTED); 6576 6577 hci_dev_lock(hdev); 6578 6579 changed = !!bacmp(&hdev->public_addr, &cp->bdaddr); 6580 bacpy(&hdev->public_addr, &cp->bdaddr); 6581 6582 err = send_options_rsp(sk, MGMT_OP_SET_PUBLIC_ADDRESS, hdev); 6583 if (err < 0) 6584 goto unlock; 6585 6586 if (!changed) 6587 goto unlock; 6588 6589 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) 6590 err = new_options(hdev, sk); 6591 6592 if (is_configured(hdev)) { 6593 mgmt_index_removed(hdev); 6594 6595 hci_dev_clear_flag(hdev, HCI_UNCONFIGURED); 6596 6597 hci_dev_set_flag(hdev, HCI_CONFIG); 6598 hci_dev_set_flag(hdev, HCI_AUTO_OFF); 6599 6600 queue_work(hdev->req_workqueue, &hdev->power_on); 6601 } 6602 6603 unlock: 6604 hci_dev_unlock(hdev); 6605 return err; 6606 } 6607 6608 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data, 6609 u8 data_len) 6610 { 6611 eir[eir_len++] = sizeof(type) + data_len; 6612 eir[eir_len++] = type; 6613 memcpy(&eir[eir_len], data, data_len); 6614 eir_len += data_len; 6615 6616 return eir_len; 6617 } 6618 6619 static void read_local_oob_ext_data_complete(struct hci_dev *hdev, u8 status, 6620 u16 opcode, struct sk_buff *skb) 6621 { 6622 const struct mgmt_cp_read_local_oob_ext_data *mgmt_cp; 6623 struct mgmt_rp_read_local_oob_ext_data *mgmt_rp; 6624 u8 *h192, *r192, *h256, *r256; 6625 struct mgmt_pending_cmd *cmd; 6626 u16 eir_len; 6627 int err; 6628 6629 BT_DBG("%s status %u", hdev->name, status); 6630 6631 cmd = pending_find(MGMT_OP_READ_LOCAL_OOB_EXT_DATA, hdev); 6632 if (!cmd) 6633 return; 6634 6635 mgmt_cp = cmd->param; 6636 6637 if (status) { 6638 status = mgmt_status(status); 6639 eir_len = 0; 6640 6641 h192 = NULL; 6642 r192 = NULL; 6643 h256 = NULL; 6644 r256 = NULL; 6645 } else if (opcode == HCI_OP_READ_LOCAL_OOB_DATA) { 6646 struct hci_rp_read_local_oob_data *rp; 6647 6648 if (skb->len != sizeof(*rp)) { 6649 status = MGMT_STATUS_FAILED; 6650 eir_len = 0; 6651 } else { 6652 status = MGMT_STATUS_SUCCESS; 6653 rp = (void *)skb->data; 6654 6655 eir_len = 5 + 18 + 18; 6656 h192 = rp->hash; 6657 r192 = rp->rand; 6658 h256 = NULL; 6659 r256 = NULL; 6660 } 6661 } else { 6662 struct hci_rp_read_local_oob_ext_data *rp; 6663 6664 if (skb->len != sizeof(*rp)) { 6665 status = MGMT_STATUS_FAILED; 6666 eir_len = 0; 6667 } else { 6668 status = MGMT_STATUS_SUCCESS; 6669 rp = (void *)skb->data; 6670 6671 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) { 6672 eir_len = 5 + 18 + 18; 6673 h192 = NULL; 6674 r192 = NULL; 6675 } else { 6676 eir_len = 5 + 18 + 18 + 18 + 18; 6677 h192 = rp->hash192; 6678 r192 = rp->rand192; 6679 } 6680 6681 h256 = rp->hash256; 6682 r256 = rp->rand256; 6683 } 6684 } 6685 6686 mgmt_rp = kmalloc(sizeof(*mgmt_rp) + eir_len, GFP_KERNEL); 6687 if (!mgmt_rp) 6688 goto done; 6689 6690 if (status) 6691 goto send_rsp; 6692 6693 eir_len = eir_append_data(mgmt_rp->eir, 0, EIR_CLASS_OF_DEV, 6694 hdev->dev_class, 3); 6695 6696 if (h192 && r192) { 6697 eir_len = eir_append_data(mgmt_rp->eir, eir_len, 6698 EIR_SSP_HASH_C192, h192, 16); 6699 eir_len = eir_append_data(mgmt_rp->eir, eir_len, 6700 EIR_SSP_RAND_R192, r192, 16); 6701 } 6702 6703 if (h256 && r256) { 6704 eir_len = eir_append_data(mgmt_rp->eir, eir_len, 6705 EIR_SSP_HASH_C256, h256, 16); 6706 eir_len = eir_append_data(mgmt_rp->eir, eir_len, 6707 EIR_SSP_RAND_R256, r256, 16); 6708 } 6709 6710 send_rsp: 6711 mgmt_rp->type = mgmt_cp->type; 6712 mgmt_rp->eir_len = cpu_to_le16(eir_len); 6713 6714 err = mgmt_cmd_complete(cmd->sk, hdev->id, 6715 MGMT_OP_READ_LOCAL_OOB_EXT_DATA, status, 6716 mgmt_rp, sizeof(*mgmt_rp) + eir_len); 6717 if (err < 0 || status) 6718 goto done; 6719 6720 hci_sock_set_flag(cmd->sk, HCI_MGMT_OOB_DATA_EVENTS); 6721 6722 err = mgmt_limited_event(MGMT_EV_LOCAL_OOB_DATA_UPDATED, hdev, 6723 mgmt_rp, sizeof(*mgmt_rp) + eir_len, 6724 HCI_MGMT_OOB_DATA_EVENTS, cmd->sk); 6725 done: 6726 kfree(mgmt_rp); 6727 mgmt_pending_remove(cmd); 6728 } 6729 6730 static int read_local_ssp_oob_req(struct hci_dev *hdev, struct sock *sk, 6731 struct mgmt_cp_read_local_oob_ext_data *cp) 6732 { 6733 struct mgmt_pending_cmd *cmd; 6734 struct hci_request req; 6735 int err; 6736 6737 cmd = mgmt_pending_add(sk, MGMT_OP_READ_LOCAL_OOB_EXT_DATA, hdev, 6738 cp, sizeof(*cp)); 6739 if (!cmd) 6740 return -ENOMEM; 6741 6742 hci_req_init(&req, hdev); 6743 6744 if (bredr_sc_enabled(hdev)) 6745 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_EXT_DATA, 0, NULL); 6746 else 6747 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_DATA, 0, NULL); 6748 6749 err = hci_req_run_skb(&req, read_local_oob_ext_data_complete); 6750 if (err < 0) { 6751 mgmt_pending_remove(cmd); 6752 return err; 6753 } 6754 6755 return 0; 6756 } 6757 6758 static int read_local_oob_ext_data(struct sock *sk, struct hci_dev *hdev, 6759 void *data, u16 data_len) 6760 { 6761 struct mgmt_cp_read_local_oob_ext_data *cp = data; 6762 struct mgmt_rp_read_local_oob_ext_data *rp; 6763 size_t rp_len; 6764 u16 eir_len; 6765 u8 status, flags, role, addr[7], hash[16], rand[16]; 6766 int err; 6767 6768 BT_DBG("%s", hdev->name); 6769 6770 if (hdev_is_powered(hdev)) { 6771 switch (cp->type) { 6772 case BIT(BDADDR_BREDR): 6773 status = mgmt_bredr_support(hdev); 6774 if (status) 6775 eir_len = 0; 6776 else 6777 eir_len = 5; 6778 break; 6779 case (BIT(BDADDR_LE_PUBLIC) | BIT(BDADDR_LE_RANDOM)): 6780 status = mgmt_le_support(hdev); 6781 if (status) 6782 eir_len = 0; 6783 else 6784 eir_len = 9 + 3 + 18 + 18 + 3; 6785 break; 6786 default: 6787 status = MGMT_STATUS_INVALID_PARAMS; 6788 eir_len = 0; 6789 break; 6790 } 6791 } else { 6792 status = MGMT_STATUS_NOT_POWERED; 6793 eir_len = 0; 6794 } 6795 6796 rp_len = sizeof(*rp) + eir_len; 6797 rp = kmalloc(rp_len, GFP_ATOMIC); 6798 if (!rp) 6799 return -ENOMEM; 6800 6801 if (status) 6802 goto complete; 6803 6804 hci_dev_lock(hdev); 6805 6806 eir_len = 0; 6807 switch (cp->type) { 6808 case BIT(BDADDR_BREDR): 6809 if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { 6810 err = read_local_ssp_oob_req(hdev, sk, cp); 6811 hci_dev_unlock(hdev); 6812 if (!err) 6813 goto done; 6814 6815 status = MGMT_STATUS_FAILED; 6816 goto complete; 6817 } else { 6818 eir_len = eir_append_data(rp->eir, eir_len, 6819 EIR_CLASS_OF_DEV, 6820 hdev->dev_class, 3); 6821 } 6822 break; 6823 case (BIT(BDADDR_LE_PUBLIC) | BIT(BDADDR_LE_RANDOM)): 6824 if (hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 6825 smp_generate_oob(hdev, hash, rand) < 0) { 6826 hci_dev_unlock(hdev); 6827 status = MGMT_STATUS_FAILED; 6828 goto complete; 6829 } 6830 6831 /* This should return the active RPA, but since the RPA 6832 * is only programmed on demand, it is really hard to fill 6833 * this in at the moment. For now disallow retrieving 6834 * local out-of-band data when privacy is in use. 6835 * 6836 * Returning the identity address will not help here since 6837 * pairing happens before the identity resolving key is 6838 * known and thus the connection establishment happens 6839 * based on the RPA and not the identity address. 6840 */ 6841 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { 6842 hci_dev_unlock(hdev); 6843 status = MGMT_STATUS_REJECTED; 6844 goto complete; 6845 } 6846 6847 if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) || 6848 !bacmp(&hdev->bdaddr, BDADDR_ANY) || 6849 (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && 6850 bacmp(&hdev->static_addr, BDADDR_ANY))) { 6851 memcpy(addr, &hdev->static_addr, 6); 6852 addr[6] = 0x01; 6853 } else { 6854 memcpy(addr, &hdev->bdaddr, 6); 6855 addr[6] = 0x00; 6856 } 6857 6858 eir_len = eir_append_data(rp->eir, eir_len, EIR_LE_BDADDR, 6859 addr, sizeof(addr)); 6860 6861 if (hci_dev_test_flag(hdev, HCI_ADVERTISING)) 6862 role = 0x02; 6863 else 6864 role = 0x01; 6865 6866 eir_len = eir_append_data(rp->eir, eir_len, EIR_LE_ROLE, 6867 &role, sizeof(role)); 6868 6869 if (hci_dev_test_flag(hdev, HCI_SC_ENABLED)) { 6870 eir_len = eir_append_data(rp->eir, eir_len, 6871 EIR_LE_SC_CONFIRM, 6872 hash, sizeof(hash)); 6873 6874 eir_len = eir_append_data(rp->eir, eir_len, 6875 EIR_LE_SC_RANDOM, 6876 rand, sizeof(rand)); 6877 } 6878 6879 flags = get_adv_discov_flags(hdev); 6880 6881 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) 6882 flags |= LE_AD_NO_BREDR; 6883 6884 eir_len = eir_append_data(rp->eir, eir_len, EIR_FLAGS, 6885 &flags, sizeof(flags)); 6886 break; 6887 } 6888 6889 hci_dev_unlock(hdev); 6890 6891 hci_sock_set_flag(sk, HCI_MGMT_OOB_DATA_EVENTS); 6892 6893 status = MGMT_STATUS_SUCCESS; 6894 6895 complete: 6896 rp->type = cp->type; 6897 rp->eir_len = cpu_to_le16(eir_len); 6898 6899 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_EXT_DATA, 6900 status, rp, sizeof(*rp) + eir_len); 6901 if (err < 0 || status) 6902 goto done; 6903 6904 err = mgmt_limited_event(MGMT_EV_LOCAL_OOB_DATA_UPDATED, hdev, 6905 rp, sizeof(*rp) + eir_len, 6906 HCI_MGMT_OOB_DATA_EVENTS, sk); 6907 6908 done: 6909 kfree(rp); 6910 6911 return err; 6912 } 6913 6914 static u32 get_supported_adv_flags(struct hci_dev *hdev) 6915 { 6916 u32 flags = 0; 6917 6918 flags |= MGMT_ADV_FLAG_CONNECTABLE; 6919 flags |= MGMT_ADV_FLAG_DISCOV; 6920 flags |= MGMT_ADV_FLAG_LIMITED_DISCOV; 6921 flags |= MGMT_ADV_FLAG_MANAGED_FLAGS; 6922 6923 if (hdev->adv_tx_power != HCI_TX_POWER_INVALID) 6924 flags |= MGMT_ADV_FLAG_TX_POWER; 6925 6926 return flags; 6927 } 6928 6929 static int read_adv_features(struct sock *sk, struct hci_dev *hdev, 6930 void *data, u16 data_len) 6931 { 6932 struct mgmt_rp_read_adv_features *rp; 6933 size_t rp_len; 6934 int err, i; 6935 bool instance; 6936 struct adv_info *adv_instance; 6937 u32 supported_flags; 6938 6939 BT_DBG("%s", hdev->name); 6940 6941 if (!lmp_le_capable(hdev)) 6942 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_ADV_FEATURES, 6943 MGMT_STATUS_REJECTED); 6944 6945 hci_dev_lock(hdev); 6946 6947 rp_len = sizeof(*rp); 6948 6949 instance = hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE); 6950 if (instance) 6951 rp_len += hdev->adv_instance_cnt; 6952 6953 rp = kmalloc(rp_len, GFP_ATOMIC); 6954 if (!rp) { 6955 hci_dev_unlock(hdev); 6956 return -ENOMEM; 6957 } 6958 6959 supported_flags = get_supported_adv_flags(hdev); 6960 6961 rp->supported_flags = cpu_to_le32(supported_flags); 6962 rp->max_adv_data_len = HCI_MAX_AD_LENGTH; 6963 rp->max_scan_rsp_len = HCI_MAX_AD_LENGTH; 6964 rp->max_instances = HCI_MAX_ADV_INSTANCES; 6965 6966 if (instance) { 6967 i = 0; 6968 list_for_each_entry(adv_instance, &hdev->adv_instances, list) { 6969 if (i >= hdev->adv_instance_cnt) 6970 break; 6971 6972 rp->instance[i] = adv_instance->instance; 6973 i++; 6974 } 6975 rp->num_instances = hdev->adv_instance_cnt; 6976 } else { 6977 rp->num_instances = 0; 6978 } 6979 6980 hci_dev_unlock(hdev); 6981 6982 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_ADV_FEATURES, 6983 MGMT_STATUS_SUCCESS, rp, rp_len); 6984 6985 kfree(rp); 6986 6987 return err; 6988 } 6989 6990 static bool tlv_data_is_valid(struct hci_dev *hdev, u32 adv_flags, u8 *data, 6991 u8 len, bool is_adv_data) 6992 { 6993 u8 max_len = HCI_MAX_AD_LENGTH; 6994 int i, cur_len; 6995 bool flags_managed = false; 6996 bool tx_power_managed = false; 6997 u32 flags_params = MGMT_ADV_FLAG_DISCOV | MGMT_ADV_FLAG_LIMITED_DISCOV | 6998 MGMT_ADV_FLAG_MANAGED_FLAGS; 6999 7000 if (is_adv_data && (adv_flags & flags_params)) { 7001 flags_managed = true; 7002 max_len -= 3; 7003 } 7004 7005 if (is_adv_data && (adv_flags & MGMT_ADV_FLAG_TX_POWER)) { 7006 tx_power_managed = true; 7007 max_len -= 3; 7008 } 7009 7010 if (len > max_len) 7011 return false; 7012 7013 /* Make sure that the data is correctly formatted. */ 7014 for (i = 0, cur_len = 0; i < len; i += (cur_len + 1)) { 7015 cur_len = data[i]; 7016 7017 if (flags_managed && data[i + 1] == EIR_FLAGS) 7018 return false; 7019 7020 if (tx_power_managed && data[i + 1] == EIR_TX_POWER) 7021 return false; 7022 7023 /* If the current field length would exceed the total data 7024 * length, then it's invalid. 7025 */ 7026 if (i + cur_len >= len) 7027 return false; 7028 } 7029 7030 return true; 7031 } 7032 7033 static void add_advertising_complete(struct hci_dev *hdev, u8 status, 7034 u16 opcode) 7035 { 7036 struct mgmt_pending_cmd *cmd; 7037 struct mgmt_cp_add_advertising *cp; 7038 struct mgmt_rp_add_advertising rp; 7039 struct adv_info *adv_instance, *n; 7040 u8 instance; 7041 7042 BT_DBG("status %d", status); 7043 7044 hci_dev_lock(hdev); 7045 7046 cmd = pending_find(MGMT_OP_ADD_ADVERTISING, hdev); 7047 7048 if (status) 7049 hci_dev_clear_flag(hdev, HCI_ADVERTISING_INSTANCE); 7050 7051 list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) { 7052 if (!adv_instance->pending) 7053 continue; 7054 7055 if (!status) { 7056 adv_instance->pending = false; 7057 continue; 7058 } 7059 7060 instance = adv_instance->instance; 7061 7062 if (hdev->cur_adv_instance == instance) 7063 cancel_adv_timeout(hdev); 7064 7065 hci_remove_adv_instance(hdev, instance); 7066 advertising_removed(cmd ? cmd->sk : NULL, hdev, instance); 7067 } 7068 7069 if (!cmd) 7070 goto unlock; 7071 7072 cp = cmd->param; 7073 rp.instance = cp->instance; 7074 7075 if (status) 7076 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, 7077 mgmt_status(status)); 7078 else 7079 mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, 7080 mgmt_status(status), &rp, sizeof(rp)); 7081 7082 mgmt_pending_remove(cmd); 7083 7084 unlock: 7085 hci_dev_unlock(hdev); 7086 } 7087 7088 void mgmt_adv_timeout_expired(struct hci_dev *hdev) 7089 { 7090 u8 instance; 7091 struct hci_request req; 7092 7093 hdev->adv_instance_timeout = 0; 7094 7095 instance = get_current_adv_instance(hdev); 7096 if (instance == 0x00) 7097 return; 7098 7099 hci_dev_lock(hdev); 7100 hci_req_init(&req, hdev); 7101 7102 clear_adv_instance(hdev, &req, instance, false); 7103 7104 if (list_empty(&hdev->adv_instances)) 7105 disable_advertising(&req); 7106 7107 if (!skb_queue_empty(&req.cmd_q)) 7108 hci_req_run(&req, NULL); 7109 7110 hci_dev_unlock(hdev); 7111 } 7112 7113 static int add_advertising(struct sock *sk, struct hci_dev *hdev, 7114 void *data, u16 data_len) 7115 { 7116 struct mgmt_cp_add_advertising *cp = data; 7117 struct mgmt_rp_add_advertising rp; 7118 u32 flags; 7119 u32 supported_flags; 7120 u8 status; 7121 u16 timeout, duration; 7122 unsigned int prev_instance_cnt = hdev->adv_instance_cnt; 7123 u8 schedule_instance = 0; 7124 struct adv_info *next_instance; 7125 int err; 7126 struct mgmt_pending_cmd *cmd; 7127 struct hci_request req; 7128 7129 BT_DBG("%s", hdev->name); 7130 7131 status = mgmt_le_support(hdev); 7132 if (status) 7133 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING, 7134 status); 7135 7136 flags = __le32_to_cpu(cp->flags); 7137 timeout = __le16_to_cpu(cp->timeout); 7138 duration = __le16_to_cpu(cp->duration); 7139 7140 /* The current implementation only supports a subset of the specified 7141 * flags. 7142 */ 7143 supported_flags = get_supported_adv_flags(hdev); 7144 if (flags & ~supported_flags) 7145 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING, 7146 MGMT_STATUS_INVALID_PARAMS); 7147 7148 hci_dev_lock(hdev); 7149 7150 if (timeout && !hdev_is_powered(hdev)) { 7151 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING, 7152 MGMT_STATUS_REJECTED); 7153 goto unlock; 7154 } 7155 7156 if (pending_find(MGMT_OP_ADD_ADVERTISING, hdev) || 7157 pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev) || 7158 pending_find(MGMT_OP_SET_LE, hdev)) { 7159 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING, 7160 MGMT_STATUS_BUSY); 7161 goto unlock; 7162 } 7163 7164 if (!tlv_data_is_valid(hdev, flags, cp->data, cp->adv_data_len, true) || 7165 !tlv_data_is_valid(hdev, flags, cp->data + cp->adv_data_len, 7166 cp->scan_rsp_len, false)) { 7167 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING, 7168 MGMT_STATUS_INVALID_PARAMS); 7169 goto unlock; 7170 } 7171 7172 err = hci_add_adv_instance(hdev, cp->instance, flags, 7173 cp->adv_data_len, cp->data, 7174 cp->scan_rsp_len, 7175 cp->data + cp->adv_data_len, 7176 timeout, duration); 7177 if (err < 0) { 7178 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING, 7179 MGMT_STATUS_FAILED); 7180 goto unlock; 7181 } 7182 7183 /* Only trigger an advertising added event if a new instance was 7184 * actually added. 7185 */ 7186 if (hdev->adv_instance_cnt > prev_instance_cnt) 7187 advertising_added(sk, hdev, cp->instance); 7188 7189 hci_dev_set_flag(hdev, HCI_ADVERTISING_INSTANCE); 7190 7191 if (hdev->cur_adv_instance == cp->instance) { 7192 /* If the currently advertised instance is being changed then 7193 * cancel the current advertising and schedule the next 7194 * instance. If there is only one instance then the overridden 7195 * advertising data will be visible right away. 7196 */ 7197 cancel_adv_timeout(hdev); 7198 7199 next_instance = hci_get_next_instance(hdev, cp->instance); 7200 if (next_instance) 7201 schedule_instance = next_instance->instance; 7202 } else if (!hdev->adv_instance_timeout) { 7203 /* Immediately advertise the new instance if no other 7204 * instance is currently being advertised. 7205 */ 7206 schedule_instance = cp->instance; 7207 } 7208 7209 /* If the HCI_ADVERTISING flag is set or the device isn't powered or 7210 * there is no instance to be advertised then we have no HCI 7211 * communication to make. Simply return. 7212 */ 7213 if (!hdev_is_powered(hdev) || 7214 hci_dev_test_flag(hdev, HCI_ADVERTISING) || 7215 !schedule_instance) { 7216 rp.instance = cp->instance; 7217 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_ADVERTISING, 7218 MGMT_STATUS_SUCCESS, &rp, sizeof(rp)); 7219 goto unlock; 7220 } 7221 7222 /* We're good to go, update advertising data, parameters, and start 7223 * advertising. 7224 */ 7225 cmd = mgmt_pending_add(sk, MGMT_OP_ADD_ADVERTISING, hdev, data, 7226 data_len); 7227 if (!cmd) { 7228 err = -ENOMEM; 7229 goto unlock; 7230 } 7231 7232 hci_req_init(&req, hdev); 7233 7234 err = schedule_adv_instance(&req, schedule_instance, true); 7235 7236 if (!err) 7237 err = hci_req_run(&req, add_advertising_complete); 7238 7239 if (err < 0) 7240 mgmt_pending_remove(cmd); 7241 7242 unlock: 7243 hci_dev_unlock(hdev); 7244 7245 return err; 7246 } 7247 7248 static void remove_advertising_complete(struct hci_dev *hdev, u8 status, 7249 u16 opcode) 7250 { 7251 struct mgmt_pending_cmd *cmd; 7252 struct mgmt_cp_remove_advertising *cp; 7253 struct mgmt_rp_remove_advertising rp; 7254 7255 BT_DBG("status %d", status); 7256 7257 hci_dev_lock(hdev); 7258 7259 /* A failure status here only means that we failed to disable 7260 * advertising. Otherwise, the advertising instance has been removed, 7261 * so report success. 7262 */ 7263 cmd = pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev); 7264 if (!cmd) 7265 goto unlock; 7266 7267 cp = cmd->param; 7268 rp.instance = cp->instance; 7269 7270 mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, MGMT_STATUS_SUCCESS, 7271 &rp, sizeof(rp)); 7272 mgmt_pending_remove(cmd); 7273 7274 unlock: 7275 hci_dev_unlock(hdev); 7276 } 7277 7278 static int remove_advertising(struct sock *sk, struct hci_dev *hdev, 7279 void *data, u16 data_len) 7280 { 7281 struct mgmt_cp_remove_advertising *cp = data; 7282 struct mgmt_rp_remove_advertising rp; 7283 struct mgmt_pending_cmd *cmd; 7284 struct hci_request req; 7285 int err; 7286 7287 BT_DBG("%s", hdev->name); 7288 7289 hci_dev_lock(hdev); 7290 7291 if (cp->instance && !hci_find_adv_instance(hdev, cp->instance)) { 7292 err = mgmt_cmd_status(sk, hdev->id, 7293 MGMT_OP_REMOVE_ADVERTISING, 7294 MGMT_STATUS_INVALID_PARAMS); 7295 goto unlock; 7296 } 7297 7298 if (pending_find(MGMT_OP_ADD_ADVERTISING, hdev) || 7299 pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev) || 7300 pending_find(MGMT_OP_SET_LE, hdev)) { 7301 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_ADVERTISING, 7302 MGMT_STATUS_BUSY); 7303 goto unlock; 7304 } 7305 7306 if (!hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE)) { 7307 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_ADVERTISING, 7308 MGMT_STATUS_INVALID_PARAMS); 7309 goto unlock; 7310 } 7311 7312 hci_req_init(&req, hdev); 7313 7314 clear_adv_instance(hdev, &req, cp->instance, true); 7315 7316 if (list_empty(&hdev->adv_instances)) 7317 disable_advertising(&req); 7318 7319 /* If no HCI commands have been collected so far or the HCI_ADVERTISING 7320 * flag is set or the device isn't powered then we have no HCI 7321 * communication to make. Simply return. 7322 */ 7323 if (skb_queue_empty(&req.cmd_q) || 7324 !hdev_is_powered(hdev) || 7325 hci_dev_test_flag(hdev, HCI_ADVERTISING)) { 7326 rp.instance = cp->instance; 7327 err = mgmt_cmd_complete(sk, hdev->id, 7328 MGMT_OP_REMOVE_ADVERTISING, 7329 MGMT_STATUS_SUCCESS, &rp, sizeof(rp)); 7330 goto unlock; 7331 } 7332 7333 cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_ADVERTISING, hdev, data, 7334 data_len); 7335 if (!cmd) { 7336 err = -ENOMEM; 7337 goto unlock; 7338 } 7339 7340 err = hci_req_run(&req, remove_advertising_complete); 7341 if (err < 0) 7342 mgmt_pending_remove(cmd); 7343 7344 unlock: 7345 hci_dev_unlock(hdev); 7346 7347 return err; 7348 } 7349 7350 static const struct hci_mgmt_handler mgmt_handlers[] = { 7351 { NULL }, /* 0x0000 (no command) */ 7352 { read_version, MGMT_READ_VERSION_SIZE, 7353 HCI_MGMT_NO_HDEV | 7354 HCI_MGMT_UNTRUSTED }, 7355 { read_commands, MGMT_READ_COMMANDS_SIZE, 7356 HCI_MGMT_NO_HDEV | 7357 HCI_MGMT_UNTRUSTED }, 7358 { read_index_list, MGMT_READ_INDEX_LIST_SIZE, 7359 HCI_MGMT_NO_HDEV | 7360 HCI_MGMT_UNTRUSTED }, 7361 { read_controller_info, MGMT_READ_INFO_SIZE, 7362 HCI_MGMT_UNTRUSTED }, 7363 { set_powered, MGMT_SETTING_SIZE }, 7364 { set_discoverable, MGMT_SET_DISCOVERABLE_SIZE }, 7365 { set_connectable, MGMT_SETTING_SIZE }, 7366 { set_fast_connectable, MGMT_SETTING_SIZE }, 7367 { set_bondable, MGMT_SETTING_SIZE }, 7368 { set_link_security, MGMT_SETTING_SIZE }, 7369 { set_ssp, MGMT_SETTING_SIZE }, 7370 { set_hs, MGMT_SETTING_SIZE }, 7371 { set_le, MGMT_SETTING_SIZE }, 7372 { set_dev_class, MGMT_SET_DEV_CLASS_SIZE }, 7373 { set_local_name, MGMT_SET_LOCAL_NAME_SIZE }, 7374 { add_uuid, MGMT_ADD_UUID_SIZE }, 7375 { remove_uuid, MGMT_REMOVE_UUID_SIZE }, 7376 { load_link_keys, MGMT_LOAD_LINK_KEYS_SIZE, 7377 HCI_MGMT_VAR_LEN }, 7378 { load_long_term_keys, MGMT_LOAD_LONG_TERM_KEYS_SIZE, 7379 HCI_MGMT_VAR_LEN }, 7380 { disconnect, MGMT_DISCONNECT_SIZE }, 7381 { get_connections, MGMT_GET_CONNECTIONS_SIZE }, 7382 { pin_code_reply, MGMT_PIN_CODE_REPLY_SIZE }, 7383 { pin_code_neg_reply, MGMT_PIN_CODE_NEG_REPLY_SIZE }, 7384 { set_io_capability, MGMT_SET_IO_CAPABILITY_SIZE }, 7385 { pair_device, MGMT_PAIR_DEVICE_SIZE }, 7386 { cancel_pair_device, MGMT_CANCEL_PAIR_DEVICE_SIZE }, 7387 { unpair_device, MGMT_UNPAIR_DEVICE_SIZE }, 7388 { user_confirm_reply, MGMT_USER_CONFIRM_REPLY_SIZE }, 7389 { user_confirm_neg_reply, MGMT_USER_CONFIRM_NEG_REPLY_SIZE }, 7390 { user_passkey_reply, MGMT_USER_PASSKEY_REPLY_SIZE }, 7391 { user_passkey_neg_reply, MGMT_USER_PASSKEY_NEG_REPLY_SIZE }, 7392 { read_local_oob_data, MGMT_READ_LOCAL_OOB_DATA_SIZE }, 7393 { add_remote_oob_data, MGMT_ADD_REMOTE_OOB_DATA_SIZE, 7394 HCI_MGMT_VAR_LEN }, 7395 { remove_remote_oob_data, MGMT_REMOVE_REMOTE_OOB_DATA_SIZE }, 7396 { start_discovery, MGMT_START_DISCOVERY_SIZE }, 7397 { stop_discovery, MGMT_STOP_DISCOVERY_SIZE }, 7398 { confirm_name, MGMT_CONFIRM_NAME_SIZE }, 7399 { block_device, MGMT_BLOCK_DEVICE_SIZE }, 7400 { unblock_device, MGMT_UNBLOCK_DEVICE_SIZE }, 7401 { set_device_id, MGMT_SET_DEVICE_ID_SIZE }, 7402 { set_advertising, MGMT_SETTING_SIZE }, 7403 { set_bredr, MGMT_SETTING_SIZE }, 7404 { set_static_address, MGMT_SET_STATIC_ADDRESS_SIZE }, 7405 { set_scan_params, MGMT_SET_SCAN_PARAMS_SIZE }, 7406 { set_secure_conn, MGMT_SETTING_SIZE }, 7407 { set_debug_keys, MGMT_SETTING_SIZE }, 7408 { set_privacy, MGMT_SET_PRIVACY_SIZE }, 7409 { load_irks, MGMT_LOAD_IRKS_SIZE, 7410 HCI_MGMT_VAR_LEN }, 7411 { get_conn_info, MGMT_GET_CONN_INFO_SIZE }, 7412 { get_clock_info, MGMT_GET_CLOCK_INFO_SIZE }, 7413 { add_device, MGMT_ADD_DEVICE_SIZE }, 7414 { remove_device, MGMT_REMOVE_DEVICE_SIZE }, 7415 { load_conn_param, MGMT_LOAD_CONN_PARAM_SIZE, 7416 HCI_MGMT_VAR_LEN }, 7417 { read_unconf_index_list, MGMT_READ_UNCONF_INDEX_LIST_SIZE, 7418 HCI_MGMT_NO_HDEV | 7419 HCI_MGMT_UNTRUSTED }, 7420 { read_config_info, MGMT_READ_CONFIG_INFO_SIZE, 7421 HCI_MGMT_UNCONFIGURED | 7422 HCI_MGMT_UNTRUSTED }, 7423 { set_external_config, MGMT_SET_EXTERNAL_CONFIG_SIZE, 7424 HCI_MGMT_UNCONFIGURED }, 7425 { set_public_address, MGMT_SET_PUBLIC_ADDRESS_SIZE, 7426 HCI_MGMT_UNCONFIGURED }, 7427 { start_service_discovery, MGMT_START_SERVICE_DISCOVERY_SIZE, 7428 HCI_MGMT_VAR_LEN }, 7429 { read_local_oob_ext_data, MGMT_READ_LOCAL_OOB_EXT_DATA_SIZE }, 7430 { read_ext_index_list, MGMT_READ_EXT_INDEX_LIST_SIZE, 7431 HCI_MGMT_NO_HDEV | 7432 HCI_MGMT_UNTRUSTED }, 7433 { read_adv_features, MGMT_READ_ADV_FEATURES_SIZE }, 7434 { add_advertising, MGMT_ADD_ADVERTISING_SIZE, 7435 HCI_MGMT_VAR_LEN }, 7436 { remove_advertising, MGMT_REMOVE_ADVERTISING_SIZE }, 7437 }; 7438 7439 void mgmt_index_added(struct hci_dev *hdev) 7440 { 7441 struct mgmt_ev_ext_index ev; 7442 7443 if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) 7444 return; 7445 7446 switch (hdev->dev_type) { 7447 case HCI_BREDR: 7448 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { 7449 mgmt_index_event(MGMT_EV_UNCONF_INDEX_ADDED, hdev, 7450 NULL, 0, HCI_MGMT_UNCONF_INDEX_EVENTS); 7451 ev.type = 0x01; 7452 } else { 7453 mgmt_index_event(MGMT_EV_INDEX_ADDED, hdev, NULL, 0, 7454 HCI_MGMT_INDEX_EVENTS); 7455 ev.type = 0x00; 7456 } 7457 break; 7458 case HCI_AMP: 7459 ev.type = 0x02; 7460 break; 7461 default: 7462 return; 7463 } 7464 7465 ev.bus = hdev->bus; 7466 7467 mgmt_index_event(MGMT_EV_EXT_INDEX_ADDED, hdev, &ev, sizeof(ev), 7468 HCI_MGMT_EXT_INDEX_EVENTS); 7469 } 7470 7471 void mgmt_index_removed(struct hci_dev *hdev) 7472 { 7473 struct mgmt_ev_ext_index ev; 7474 u8 status = MGMT_STATUS_INVALID_INDEX; 7475 7476 if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) 7477 return; 7478 7479 switch (hdev->dev_type) { 7480 case HCI_BREDR: 7481 mgmt_pending_foreach(0, hdev, cmd_complete_rsp, &status); 7482 7483 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { 7484 mgmt_index_event(MGMT_EV_UNCONF_INDEX_REMOVED, hdev, 7485 NULL, 0, HCI_MGMT_UNCONF_INDEX_EVENTS); 7486 ev.type = 0x01; 7487 } else { 7488 mgmt_index_event(MGMT_EV_INDEX_REMOVED, hdev, NULL, 0, 7489 HCI_MGMT_INDEX_EVENTS); 7490 ev.type = 0x00; 7491 } 7492 break; 7493 case HCI_AMP: 7494 ev.type = 0x02; 7495 break; 7496 default: 7497 return; 7498 } 7499 7500 ev.bus = hdev->bus; 7501 7502 mgmt_index_event(MGMT_EV_EXT_INDEX_REMOVED, hdev, &ev, sizeof(ev), 7503 HCI_MGMT_EXT_INDEX_EVENTS); 7504 } 7505 7506 /* This function requires the caller holds hdev->lock */ 7507 static void restart_le_actions(struct hci_request *req) 7508 { 7509 struct hci_dev *hdev = req->hdev; 7510 struct hci_conn_params *p; 7511 7512 list_for_each_entry(p, &hdev->le_conn_params, list) { 7513 /* Needed for AUTO_OFF case where might not "really" 7514 * have been powered off. 7515 */ 7516 list_del_init(&p->action); 7517 7518 switch (p->auto_connect) { 7519 case HCI_AUTO_CONN_DIRECT: 7520 case HCI_AUTO_CONN_ALWAYS: 7521 list_add(&p->action, &hdev->pend_le_conns); 7522 break; 7523 case HCI_AUTO_CONN_REPORT: 7524 list_add(&p->action, &hdev->pend_le_reports); 7525 break; 7526 default: 7527 break; 7528 } 7529 } 7530 7531 __hci_update_background_scan(req); 7532 } 7533 7534 static void powered_complete(struct hci_dev *hdev, u8 status, u16 opcode) 7535 { 7536 struct cmd_lookup match = { NULL, hdev }; 7537 7538 BT_DBG("status 0x%02x", status); 7539 7540 if (!status) { 7541 /* Register the available SMP channels (BR/EDR and LE) only 7542 * when successfully powering on the controller. This late 7543 * registration is required so that LE SMP can clearly 7544 * decide if the public address or static address is used. 7545 */ 7546 smp_register(hdev); 7547 } 7548 7549 hci_dev_lock(hdev); 7550 7551 mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match); 7552 7553 new_settings(hdev, match.sk); 7554 7555 hci_dev_unlock(hdev); 7556 7557 if (match.sk) 7558 sock_put(match.sk); 7559 } 7560 7561 static int powered_update_hci(struct hci_dev *hdev) 7562 { 7563 struct hci_request req; 7564 struct adv_info *adv_instance; 7565 u8 link_sec; 7566 7567 hci_req_init(&req, hdev); 7568 7569 if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && 7570 !lmp_host_ssp_capable(hdev)) { 7571 u8 mode = 0x01; 7572 7573 hci_req_add(&req, HCI_OP_WRITE_SSP_MODE, sizeof(mode), &mode); 7574 7575 if (bredr_sc_enabled(hdev) && !lmp_host_sc_capable(hdev)) { 7576 u8 support = 0x01; 7577 7578 hci_req_add(&req, HCI_OP_WRITE_SC_SUPPORT, 7579 sizeof(support), &support); 7580 } 7581 } 7582 7583 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED) && 7584 lmp_bredr_capable(hdev)) { 7585 struct hci_cp_write_le_host_supported cp; 7586 7587 cp.le = 0x01; 7588 cp.simul = 0x00; 7589 7590 /* Check first if we already have the right 7591 * host state (host features set) 7592 */ 7593 if (cp.le != lmp_host_le_capable(hdev) || 7594 cp.simul != lmp_host_le_br_capable(hdev)) 7595 hci_req_add(&req, HCI_OP_WRITE_LE_HOST_SUPPORTED, 7596 sizeof(cp), &cp); 7597 } 7598 7599 if (lmp_le_capable(hdev)) { 7600 /* Make sure the controller has a good default for 7601 * advertising data. This also applies to the case 7602 * where BR/EDR was toggled during the AUTO_OFF phase. 7603 */ 7604 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED) && 7605 (hci_dev_test_flag(hdev, HCI_ADVERTISING) || 7606 !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE))) { 7607 update_adv_data(&req); 7608 update_scan_rsp_data(&req); 7609 } 7610 7611 if (hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) && 7612 hdev->cur_adv_instance == 0x00 && 7613 !list_empty(&hdev->adv_instances)) { 7614 adv_instance = list_first_entry(&hdev->adv_instances, 7615 struct adv_info, list); 7616 hdev->cur_adv_instance = adv_instance->instance; 7617 } 7618 7619 if (hci_dev_test_flag(hdev, HCI_ADVERTISING)) 7620 enable_advertising(&req); 7621 else if (hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) && 7622 hdev->cur_adv_instance) 7623 schedule_adv_instance(&req, hdev->cur_adv_instance, 7624 true); 7625 7626 restart_le_actions(&req); 7627 } 7628 7629 link_sec = hci_dev_test_flag(hdev, HCI_LINK_SECURITY); 7630 if (link_sec != test_bit(HCI_AUTH, &hdev->flags)) 7631 hci_req_add(&req, HCI_OP_WRITE_AUTH_ENABLE, 7632 sizeof(link_sec), &link_sec); 7633 7634 if (lmp_bredr_capable(hdev)) { 7635 if (hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE)) 7636 write_fast_connectable(&req, true); 7637 else 7638 write_fast_connectable(&req, false); 7639 __hci_update_page_scan(&req); 7640 update_class(&req); 7641 update_name(&req); 7642 update_eir(&req); 7643 } 7644 7645 return hci_req_run(&req, powered_complete); 7646 } 7647 7648 int mgmt_powered(struct hci_dev *hdev, u8 powered) 7649 { 7650 struct cmd_lookup match = { NULL, hdev }; 7651 u8 status, zero_cod[] = { 0, 0, 0 }; 7652 int err; 7653 7654 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 7655 return 0; 7656 7657 if (powered) { 7658 if (powered_update_hci(hdev) == 0) 7659 return 0; 7660 7661 mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, 7662 &match); 7663 goto new_settings; 7664 } 7665 7666 mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match); 7667 7668 /* If the power off is because of hdev unregistration let 7669 * use the appropriate INVALID_INDEX status. Otherwise use 7670 * NOT_POWERED. We cover both scenarios here since later in 7671 * mgmt_index_removed() any hci_conn callbacks will have already 7672 * been triggered, potentially causing misleading DISCONNECTED 7673 * status responses. 7674 */ 7675 if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) 7676 status = MGMT_STATUS_INVALID_INDEX; 7677 else 7678 status = MGMT_STATUS_NOT_POWERED; 7679 7680 mgmt_pending_foreach(0, hdev, cmd_complete_rsp, &status); 7681 7682 if (memcmp(hdev->dev_class, zero_cod, sizeof(zero_cod)) != 0) 7683 mgmt_generic_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev, 7684 zero_cod, sizeof(zero_cod), NULL); 7685 7686 new_settings: 7687 err = new_settings(hdev, match.sk); 7688 7689 if (match.sk) 7690 sock_put(match.sk); 7691 7692 return err; 7693 } 7694 7695 void mgmt_set_powered_failed(struct hci_dev *hdev, int err) 7696 { 7697 struct mgmt_pending_cmd *cmd; 7698 u8 status; 7699 7700 cmd = pending_find(MGMT_OP_SET_POWERED, hdev); 7701 if (!cmd) 7702 return; 7703 7704 if (err == -ERFKILL) 7705 status = MGMT_STATUS_RFKILLED; 7706 else 7707 status = MGMT_STATUS_FAILED; 7708 7709 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_POWERED, status); 7710 7711 mgmt_pending_remove(cmd); 7712 } 7713 7714 void mgmt_discoverable_timeout(struct hci_dev *hdev) 7715 { 7716 struct hci_request req; 7717 7718 hci_dev_lock(hdev); 7719 7720 /* When discoverable timeout triggers, then just make sure 7721 * the limited discoverable flag is cleared. Even in the case 7722 * of a timeout triggered from general discoverable, it is 7723 * safe to unconditionally clear the flag. 7724 */ 7725 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); 7726 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); 7727 7728 hci_req_init(&req, hdev); 7729 if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { 7730 u8 scan = SCAN_PAGE; 7731 hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 7732 sizeof(scan), &scan); 7733 } 7734 update_class(&req); 7735 7736 /* Advertising instances don't use the global discoverable setting, so 7737 * only update AD if advertising was enabled using Set Advertising. 7738 */ 7739 if (hci_dev_test_flag(hdev, HCI_ADVERTISING)) 7740 update_adv_data(&req); 7741 7742 hci_req_run(&req, NULL); 7743 7744 hdev->discov_timeout = 0; 7745 7746 new_settings(hdev, NULL); 7747 7748 hci_dev_unlock(hdev); 7749 } 7750 7751 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 7752 bool persistent) 7753 { 7754 struct mgmt_ev_new_link_key ev; 7755 7756 memset(&ev, 0, sizeof(ev)); 7757 7758 ev.store_hint = persistent; 7759 bacpy(&ev.key.addr.bdaddr, &key->bdaddr); 7760 ev.key.addr.type = BDADDR_BREDR; 7761 ev.key.type = key->type; 7762 memcpy(ev.key.val, key->val, HCI_LINK_KEY_SIZE); 7763 ev.key.pin_len = key->pin_len; 7764 7765 mgmt_event(MGMT_EV_NEW_LINK_KEY, hdev, &ev, sizeof(ev), NULL); 7766 } 7767 7768 static u8 mgmt_ltk_type(struct smp_ltk *ltk) 7769 { 7770 switch (ltk->type) { 7771 case SMP_LTK: 7772 case SMP_LTK_SLAVE: 7773 if (ltk->authenticated) 7774 return MGMT_LTK_AUTHENTICATED; 7775 return MGMT_LTK_UNAUTHENTICATED; 7776 case SMP_LTK_P256: 7777 if (ltk->authenticated) 7778 return MGMT_LTK_P256_AUTH; 7779 return MGMT_LTK_P256_UNAUTH; 7780 case SMP_LTK_P256_DEBUG: 7781 return MGMT_LTK_P256_DEBUG; 7782 } 7783 7784 return MGMT_LTK_UNAUTHENTICATED; 7785 } 7786 7787 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent) 7788 { 7789 struct mgmt_ev_new_long_term_key ev; 7790 7791 memset(&ev, 0, sizeof(ev)); 7792 7793 /* Devices using resolvable or non-resolvable random addresses 7794 * without providing an identity resolving key don't require 7795 * to store long term keys. Their addresses will change the 7796 * next time around. 7797 * 7798 * Only when a remote device provides an identity address 7799 * make sure the long term key is stored. If the remote 7800 * identity is known, the long term keys are internally 7801 * mapped to the identity address. So allow static random 7802 * and public addresses here. 7803 */ 7804 if (key->bdaddr_type == ADDR_LE_DEV_RANDOM && 7805 (key->bdaddr.b[5] & 0xc0) != 0xc0) 7806 ev.store_hint = 0x00; 7807 else 7808 ev.store_hint = persistent; 7809 7810 bacpy(&ev.key.addr.bdaddr, &key->bdaddr); 7811 ev.key.addr.type = link_to_bdaddr(LE_LINK, key->bdaddr_type); 7812 ev.key.type = mgmt_ltk_type(key); 7813 ev.key.enc_size = key->enc_size; 7814 ev.key.ediv = key->ediv; 7815 ev.key.rand = key->rand; 7816 7817 if (key->type == SMP_LTK) 7818 ev.key.master = 1; 7819 7820 /* Make sure we copy only the significant bytes based on the 7821 * encryption key size, and set the rest of the value to zeroes. 7822 */ 7823 memcpy(ev.key.val, key->val, sizeof(key->enc_size)); 7824 memset(ev.key.val + key->enc_size, 0, 7825 sizeof(ev.key.val) - key->enc_size); 7826 7827 mgmt_event(MGMT_EV_NEW_LONG_TERM_KEY, hdev, &ev, sizeof(ev), NULL); 7828 } 7829 7830 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk) 7831 { 7832 struct mgmt_ev_new_irk ev; 7833 7834 memset(&ev, 0, sizeof(ev)); 7835 7836 /* For identity resolving keys from devices that are already 7837 * using a public address or static random address, do not 7838 * ask for storing this key. The identity resolving key really 7839 * is only mandatory for devices using resolvable random 7840 * addresses. 7841 * 7842 * Storing all identity resolving keys has the downside that 7843 * they will be also loaded on next boot of they system. More 7844 * identity resolving keys, means more time during scanning is 7845 * needed to actually resolve these addresses. 7846 */ 7847 if (bacmp(&irk->rpa, BDADDR_ANY)) 7848 ev.store_hint = 0x01; 7849 else 7850 ev.store_hint = 0x00; 7851 7852 bacpy(&ev.rpa, &irk->rpa); 7853 bacpy(&ev.irk.addr.bdaddr, &irk->bdaddr); 7854 ev.irk.addr.type = link_to_bdaddr(LE_LINK, irk->addr_type); 7855 memcpy(ev.irk.val, irk->val, sizeof(irk->val)); 7856 7857 mgmt_event(MGMT_EV_NEW_IRK, hdev, &ev, sizeof(ev), NULL); 7858 } 7859 7860 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 7861 bool persistent) 7862 { 7863 struct mgmt_ev_new_csrk ev; 7864 7865 memset(&ev, 0, sizeof(ev)); 7866 7867 /* Devices using resolvable or non-resolvable random addresses 7868 * without providing an identity resolving key don't require 7869 * to store signature resolving keys. Their addresses will change 7870 * the next time around. 7871 * 7872 * Only when a remote device provides an identity address 7873 * make sure the signature resolving key is stored. So allow 7874 * static random and public addresses here. 7875 */ 7876 if (csrk->bdaddr_type == ADDR_LE_DEV_RANDOM && 7877 (csrk->bdaddr.b[5] & 0xc0) != 0xc0) 7878 ev.store_hint = 0x00; 7879 else 7880 ev.store_hint = persistent; 7881 7882 bacpy(&ev.key.addr.bdaddr, &csrk->bdaddr); 7883 ev.key.addr.type = link_to_bdaddr(LE_LINK, csrk->bdaddr_type); 7884 ev.key.type = csrk->type; 7885 memcpy(ev.key.val, csrk->val, sizeof(csrk->val)); 7886 7887 mgmt_event(MGMT_EV_NEW_CSRK, hdev, &ev, sizeof(ev), NULL); 7888 } 7889 7890 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 7891 u8 bdaddr_type, u8 store_hint, u16 min_interval, 7892 u16 max_interval, u16 latency, u16 timeout) 7893 { 7894 struct mgmt_ev_new_conn_param ev; 7895 7896 if (!hci_is_identity_address(bdaddr, bdaddr_type)) 7897 return; 7898 7899 memset(&ev, 0, sizeof(ev)); 7900 bacpy(&ev.addr.bdaddr, bdaddr); 7901 ev.addr.type = link_to_bdaddr(LE_LINK, bdaddr_type); 7902 ev.store_hint = store_hint; 7903 ev.min_interval = cpu_to_le16(min_interval); 7904 ev.max_interval = cpu_to_le16(max_interval); 7905 ev.latency = cpu_to_le16(latency); 7906 ev.timeout = cpu_to_le16(timeout); 7907 7908 mgmt_event(MGMT_EV_NEW_CONN_PARAM, hdev, &ev, sizeof(ev), NULL); 7909 } 7910 7911 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 7912 u32 flags, u8 *name, u8 name_len) 7913 { 7914 char buf[512]; 7915 struct mgmt_ev_device_connected *ev = (void *) buf; 7916 u16 eir_len = 0; 7917 7918 bacpy(&ev->addr.bdaddr, &conn->dst); 7919 ev->addr.type = link_to_bdaddr(conn->type, conn->dst_type); 7920 7921 ev->flags = __cpu_to_le32(flags); 7922 7923 /* We must ensure that the EIR Data fields are ordered and 7924 * unique. Keep it simple for now and avoid the problem by not 7925 * adding any BR/EDR data to the LE adv. 7926 */ 7927 if (conn->le_adv_data_len > 0) { 7928 memcpy(&ev->eir[eir_len], 7929 conn->le_adv_data, conn->le_adv_data_len); 7930 eir_len = conn->le_adv_data_len; 7931 } else { 7932 if (name_len > 0) 7933 eir_len = eir_append_data(ev->eir, 0, EIR_NAME_COMPLETE, 7934 name, name_len); 7935 7936 if (memcmp(conn->dev_class, "\0\0\0", 3) != 0) 7937 eir_len = eir_append_data(ev->eir, eir_len, 7938 EIR_CLASS_OF_DEV, 7939 conn->dev_class, 3); 7940 } 7941 7942 ev->eir_len = cpu_to_le16(eir_len); 7943 7944 mgmt_event(MGMT_EV_DEVICE_CONNECTED, hdev, buf, 7945 sizeof(*ev) + eir_len, NULL); 7946 } 7947 7948 static void disconnect_rsp(struct mgmt_pending_cmd *cmd, void *data) 7949 { 7950 struct sock **sk = data; 7951 7952 cmd->cmd_complete(cmd, 0); 7953 7954 *sk = cmd->sk; 7955 sock_hold(*sk); 7956 7957 mgmt_pending_remove(cmd); 7958 } 7959 7960 static void unpair_device_rsp(struct mgmt_pending_cmd *cmd, void *data) 7961 { 7962 struct hci_dev *hdev = data; 7963 struct mgmt_cp_unpair_device *cp = cmd->param; 7964 7965 device_unpaired(hdev, &cp->addr.bdaddr, cp->addr.type, cmd->sk); 7966 7967 cmd->cmd_complete(cmd, 0); 7968 mgmt_pending_remove(cmd); 7969 } 7970 7971 bool mgmt_powering_down(struct hci_dev *hdev) 7972 { 7973 struct mgmt_pending_cmd *cmd; 7974 struct mgmt_mode *cp; 7975 7976 cmd = pending_find(MGMT_OP_SET_POWERED, hdev); 7977 if (!cmd) 7978 return false; 7979 7980 cp = cmd->param; 7981 if (!cp->val) 7982 return true; 7983 7984 return false; 7985 } 7986 7987 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 7988 u8 link_type, u8 addr_type, u8 reason, 7989 bool mgmt_connected) 7990 { 7991 struct mgmt_ev_device_disconnected ev; 7992 struct sock *sk = NULL; 7993 7994 /* The connection is still in hci_conn_hash so test for 1 7995 * instead of 0 to know if this is the last one. 7996 */ 7997 if (mgmt_powering_down(hdev) && hci_conn_count(hdev) == 1) { 7998 cancel_delayed_work(&hdev->power_off); 7999 queue_work(hdev->req_workqueue, &hdev->power_off.work); 8000 } 8001 8002 if (!mgmt_connected) 8003 return; 8004 8005 if (link_type != ACL_LINK && link_type != LE_LINK) 8006 return; 8007 8008 mgmt_pending_foreach(MGMT_OP_DISCONNECT, hdev, disconnect_rsp, &sk); 8009 8010 bacpy(&ev.addr.bdaddr, bdaddr); 8011 ev.addr.type = link_to_bdaddr(link_type, addr_type); 8012 ev.reason = reason; 8013 8014 mgmt_event(MGMT_EV_DEVICE_DISCONNECTED, hdev, &ev, sizeof(ev), sk); 8015 8016 if (sk) 8017 sock_put(sk); 8018 8019 mgmt_pending_foreach(MGMT_OP_UNPAIR_DEVICE, hdev, unpair_device_rsp, 8020 hdev); 8021 } 8022 8023 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 8024 u8 link_type, u8 addr_type, u8 status) 8025 { 8026 u8 bdaddr_type = link_to_bdaddr(link_type, addr_type); 8027 struct mgmt_cp_disconnect *cp; 8028 struct mgmt_pending_cmd *cmd; 8029 8030 mgmt_pending_foreach(MGMT_OP_UNPAIR_DEVICE, hdev, unpair_device_rsp, 8031 hdev); 8032 8033 cmd = pending_find(MGMT_OP_DISCONNECT, hdev); 8034 if (!cmd) 8035 return; 8036 8037 cp = cmd->param; 8038 8039 if (bacmp(bdaddr, &cp->addr.bdaddr)) 8040 return; 8041 8042 if (cp->addr.type != bdaddr_type) 8043 return; 8044 8045 cmd->cmd_complete(cmd, mgmt_status(status)); 8046 mgmt_pending_remove(cmd); 8047 } 8048 8049 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 8050 u8 addr_type, u8 status) 8051 { 8052 struct mgmt_ev_connect_failed ev; 8053 8054 /* The connection is still in hci_conn_hash so test for 1 8055 * instead of 0 to know if this is the last one. 8056 */ 8057 if (mgmt_powering_down(hdev) && hci_conn_count(hdev) == 1) { 8058 cancel_delayed_work(&hdev->power_off); 8059 queue_work(hdev->req_workqueue, &hdev->power_off.work); 8060 } 8061 8062 bacpy(&ev.addr.bdaddr, bdaddr); 8063 ev.addr.type = link_to_bdaddr(link_type, addr_type); 8064 ev.status = mgmt_status(status); 8065 8066 mgmt_event(MGMT_EV_CONNECT_FAILED, hdev, &ev, sizeof(ev), NULL); 8067 } 8068 8069 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure) 8070 { 8071 struct mgmt_ev_pin_code_request ev; 8072 8073 bacpy(&ev.addr.bdaddr, bdaddr); 8074 ev.addr.type = BDADDR_BREDR; 8075 ev.secure = secure; 8076 8077 mgmt_event(MGMT_EV_PIN_CODE_REQUEST, hdev, &ev, sizeof(ev), NULL); 8078 } 8079 8080 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 8081 u8 status) 8082 { 8083 struct mgmt_pending_cmd *cmd; 8084 8085 cmd = pending_find(MGMT_OP_PIN_CODE_REPLY, hdev); 8086 if (!cmd) 8087 return; 8088 8089 cmd->cmd_complete(cmd, mgmt_status(status)); 8090 mgmt_pending_remove(cmd); 8091 } 8092 8093 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 8094 u8 status) 8095 { 8096 struct mgmt_pending_cmd *cmd; 8097 8098 cmd = pending_find(MGMT_OP_PIN_CODE_NEG_REPLY, hdev); 8099 if (!cmd) 8100 return; 8101 8102 cmd->cmd_complete(cmd, mgmt_status(status)); 8103 mgmt_pending_remove(cmd); 8104 } 8105 8106 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 8107 u8 link_type, u8 addr_type, u32 value, 8108 u8 confirm_hint) 8109 { 8110 struct mgmt_ev_user_confirm_request ev; 8111 8112 BT_DBG("%s", hdev->name); 8113 8114 bacpy(&ev.addr.bdaddr, bdaddr); 8115 ev.addr.type = link_to_bdaddr(link_type, addr_type); 8116 ev.confirm_hint = confirm_hint; 8117 ev.value = cpu_to_le32(value); 8118 8119 return mgmt_event(MGMT_EV_USER_CONFIRM_REQUEST, hdev, &ev, sizeof(ev), 8120 NULL); 8121 } 8122 8123 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 8124 u8 link_type, u8 addr_type) 8125 { 8126 struct mgmt_ev_user_passkey_request ev; 8127 8128 BT_DBG("%s", hdev->name); 8129 8130 bacpy(&ev.addr.bdaddr, bdaddr); 8131 ev.addr.type = link_to_bdaddr(link_type, addr_type); 8132 8133 return mgmt_event(MGMT_EV_USER_PASSKEY_REQUEST, hdev, &ev, sizeof(ev), 8134 NULL); 8135 } 8136 8137 static int user_pairing_resp_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 8138 u8 link_type, u8 addr_type, u8 status, 8139 u8 opcode) 8140 { 8141 struct mgmt_pending_cmd *cmd; 8142 8143 cmd = pending_find(opcode, hdev); 8144 if (!cmd) 8145 return -ENOENT; 8146 8147 cmd->cmd_complete(cmd, mgmt_status(status)); 8148 mgmt_pending_remove(cmd); 8149 8150 return 0; 8151 } 8152 8153 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 8154 u8 link_type, u8 addr_type, u8 status) 8155 { 8156 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type, 8157 status, MGMT_OP_USER_CONFIRM_REPLY); 8158 } 8159 8160 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 8161 u8 link_type, u8 addr_type, u8 status) 8162 { 8163 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type, 8164 status, 8165 MGMT_OP_USER_CONFIRM_NEG_REPLY); 8166 } 8167 8168 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 8169 u8 link_type, u8 addr_type, u8 status) 8170 { 8171 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type, 8172 status, MGMT_OP_USER_PASSKEY_REPLY); 8173 } 8174 8175 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 8176 u8 link_type, u8 addr_type, u8 status) 8177 { 8178 return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type, 8179 status, 8180 MGMT_OP_USER_PASSKEY_NEG_REPLY); 8181 } 8182 8183 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 8184 u8 link_type, u8 addr_type, u32 passkey, 8185 u8 entered) 8186 { 8187 struct mgmt_ev_passkey_notify ev; 8188 8189 BT_DBG("%s", hdev->name); 8190 8191 bacpy(&ev.addr.bdaddr, bdaddr); 8192 ev.addr.type = link_to_bdaddr(link_type, addr_type); 8193 ev.passkey = __cpu_to_le32(passkey); 8194 ev.entered = entered; 8195 8196 return mgmt_event(MGMT_EV_PASSKEY_NOTIFY, hdev, &ev, sizeof(ev), NULL); 8197 } 8198 8199 void mgmt_auth_failed(struct hci_conn *conn, u8 hci_status) 8200 { 8201 struct mgmt_ev_auth_failed ev; 8202 struct mgmt_pending_cmd *cmd; 8203 u8 status = mgmt_status(hci_status); 8204 8205 bacpy(&ev.addr.bdaddr, &conn->dst); 8206 ev.addr.type = link_to_bdaddr(conn->type, conn->dst_type); 8207 ev.status = status; 8208 8209 cmd = find_pairing(conn); 8210 8211 mgmt_event(MGMT_EV_AUTH_FAILED, conn->hdev, &ev, sizeof(ev), 8212 cmd ? cmd->sk : NULL); 8213 8214 if (cmd) { 8215 cmd->cmd_complete(cmd, status); 8216 mgmt_pending_remove(cmd); 8217 } 8218 } 8219 8220 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status) 8221 { 8222 struct cmd_lookup match = { NULL, hdev }; 8223 bool changed; 8224 8225 if (status) { 8226 u8 mgmt_err = mgmt_status(status); 8227 mgmt_pending_foreach(MGMT_OP_SET_LINK_SECURITY, hdev, 8228 cmd_status_rsp, &mgmt_err); 8229 return; 8230 } 8231 8232 if (test_bit(HCI_AUTH, &hdev->flags)) 8233 changed = !hci_dev_test_and_set_flag(hdev, HCI_LINK_SECURITY); 8234 else 8235 changed = hci_dev_test_and_clear_flag(hdev, HCI_LINK_SECURITY); 8236 8237 mgmt_pending_foreach(MGMT_OP_SET_LINK_SECURITY, hdev, settings_rsp, 8238 &match); 8239 8240 if (changed) 8241 new_settings(hdev, match.sk); 8242 8243 if (match.sk) 8244 sock_put(match.sk); 8245 } 8246 8247 static void clear_eir(struct hci_request *req) 8248 { 8249 struct hci_dev *hdev = req->hdev; 8250 struct hci_cp_write_eir cp; 8251 8252 if (!lmp_ext_inq_capable(hdev)) 8253 return; 8254 8255 memset(hdev->eir, 0, sizeof(hdev->eir)); 8256 8257 memset(&cp, 0, sizeof(cp)); 8258 8259 hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); 8260 } 8261 8262 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status) 8263 { 8264 struct cmd_lookup match = { NULL, hdev }; 8265 struct hci_request req; 8266 bool changed = false; 8267 8268 if (status) { 8269 u8 mgmt_err = mgmt_status(status); 8270 8271 if (enable && hci_dev_test_and_clear_flag(hdev, 8272 HCI_SSP_ENABLED)) { 8273 hci_dev_clear_flag(hdev, HCI_HS_ENABLED); 8274 new_settings(hdev, NULL); 8275 } 8276 8277 mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, cmd_status_rsp, 8278 &mgmt_err); 8279 return; 8280 } 8281 8282 if (enable) { 8283 changed = !hci_dev_test_and_set_flag(hdev, HCI_SSP_ENABLED); 8284 } else { 8285 changed = hci_dev_test_and_clear_flag(hdev, HCI_SSP_ENABLED); 8286 if (!changed) 8287 changed = hci_dev_test_and_clear_flag(hdev, 8288 HCI_HS_ENABLED); 8289 else 8290 hci_dev_clear_flag(hdev, HCI_HS_ENABLED); 8291 } 8292 8293 mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, settings_rsp, &match); 8294 8295 if (changed) 8296 new_settings(hdev, match.sk); 8297 8298 if (match.sk) 8299 sock_put(match.sk); 8300 8301 hci_req_init(&req, hdev); 8302 8303 if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { 8304 if (hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS)) 8305 hci_req_add(&req, HCI_OP_WRITE_SSP_DEBUG_MODE, 8306 sizeof(enable), &enable); 8307 update_eir(&req); 8308 } else { 8309 clear_eir(&req); 8310 } 8311 8312 hci_req_run(&req, NULL); 8313 } 8314 8315 static void sk_lookup(struct mgmt_pending_cmd *cmd, void *data) 8316 { 8317 struct cmd_lookup *match = data; 8318 8319 if (match->sk == NULL) { 8320 match->sk = cmd->sk; 8321 sock_hold(match->sk); 8322 } 8323 } 8324 8325 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 8326 u8 status) 8327 { 8328 struct cmd_lookup match = { NULL, hdev, mgmt_status(status) }; 8329 8330 mgmt_pending_foreach(MGMT_OP_SET_DEV_CLASS, hdev, sk_lookup, &match); 8331 mgmt_pending_foreach(MGMT_OP_ADD_UUID, hdev, sk_lookup, &match); 8332 mgmt_pending_foreach(MGMT_OP_REMOVE_UUID, hdev, sk_lookup, &match); 8333 8334 if (!status) 8335 mgmt_generic_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev, 8336 dev_class, 3, NULL); 8337 8338 if (match.sk) 8339 sock_put(match.sk); 8340 } 8341 8342 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status) 8343 { 8344 struct mgmt_cp_set_local_name ev; 8345 struct mgmt_pending_cmd *cmd; 8346 8347 if (status) 8348 return; 8349 8350 memset(&ev, 0, sizeof(ev)); 8351 memcpy(ev.name, name, HCI_MAX_NAME_LENGTH); 8352 memcpy(ev.short_name, hdev->short_name, HCI_MAX_SHORT_NAME_LENGTH); 8353 8354 cmd = pending_find(MGMT_OP_SET_LOCAL_NAME, hdev); 8355 if (!cmd) { 8356 memcpy(hdev->dev_name, name, sizeof(hdev->dev_name)); 8357 8358 /* If this is a HCI command related to powering on the 8359 * HCI dev don't send any mgmt signals. 8360 */ 8361 if (pending_find(MGMT_OP_SET_POWERED, hdev)) 8362 return; 8363 } 8364 8365 mgmt_generic_event(MGMT_EV_LOCAL_NAME_CHANGED, hdev, &ev, sizeof(ev), 8366 cmd ? cmd->sk : NULL); 8367 } 8368 8369 static inline bool has_uuid(u8 *uuid, u16 uuid_count, u8 (*uuids)[16]) 8370 { 8371 int i; 8372 8373 for (i = 0; i < uuid_count; i++) { 8374 if (!memcmp(uuid, uuids[i], 16)) 8375 return true; 8376 } 8377 8378 return false; 8379 } 8380 8381 static bool eir_has_uuids(u8 *eir, u16 eir_len, u16 uuid_count, u8 (*uuids)[16]) 8382 { 8383 u16 parsed = 0; 8384 8385 while (parsed < eir_len) { 8386 u8 field_len = eir[0]; 8387 u8 uuid[16]; 8388 int i; 8389 8390 if (field_len == 0) 8391 break; 8392 8393 if (eir_len - parsed < field_len + 1) 8394 break; 8395 8396 switch (eir[1]) { 8397 case EIR_UUID16_ALL: 8398 case EIR_UUID16_SOME: 8399 for (i = 0; i + 3 <= field_len; i += 2) { 8400 memcpy(uuid, bluetooth_base_uuid, 16); 8401 uuid[13] = eir[i + 3]; 8402 uuid[12] = eir[i + 2]; 8403 if (has_uuid(uuid, uuid_count, uuids)) 8404 return true; 8405 } 8406 break; 8407 case EIR_UUID32_ALL: 8408 case EIR_UUID32_SOME: 8409 for (i = 0; i + 5 <= field_len; i += 4) { 8410 memcpy(uuid, bluetooth_base_uuid, 16); 8411 uuid[15] = eir[i + 5]; 8412 uuid[14] = eir[i + 4]; 8413 uuid[13] = eir[i + 3]; 8414 uuid[12] = eir[i + 2]; 8415 if (has_uuid(uuid, uuid_count, uuids)) 8416 return true; 8417 } 8418 break; 8419 case EIR_UUID128_ALL: 8420 case EIR_UUID128_SOME: 8421 for (i = 0; i + 17 <= field_len; i += 16) { 8422 memcpy(uuid, eir + i + 2, 16); 8423 if (has_uuid(uuid, uuid_count, uuids)) 8424 return true; 8425 } 8426 break; 8427 } 8428 8429 parsed += field_len + 1; 8430 eir += field_len + 1; 8431 } 8432 8433 return false; 8434 } 8435 8436 static void restart_le_scan(struct hci_dev *hdev) 8437 { 8438 /* If controller is not scanning we are done. */ 8439 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN)) 8440 return; 8441 8442 if (time_after(jiffies + DISCOV_LE_RESTART_DELAY, 8443 hdev->discovery.scan_start + 8444 hdev->discovery.scan_duration)) 8445 return; 8446 8447 queue_delayed_work(hdev->workqueue, &hdev->le_scan_restart, 8448 DISCOV_LE_RESTART_DELAY); 8449 } 8450 8451 static bool is_filter_match(struct hci_dev *hdev, s8 rssi, u8 *eir, 8452 u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len) 8453 { 8454 /* If a RSSI threshold has been specified, and 8455 * HCI_QUIRK_STRICT_DUPLICATE_FILTER is not set, then all results with 8456 * a RSSI smaller than the RSSI threshold will be dropped. If the quirk 8457 * is set, let it through for further processing, as we might need to 8458 * restart the scan. 8459 * 8460 * For BR/EDR devices (pre 1.2) providing no RSSI during inquiry, 8461 * the results are also dropped. 8462 */ 8463 if (hdev->discovery.rssi != HCI_RSSI_INVALID && 8464 (rssi == HCI_RSSI_INVALID || 8465 (rssi < hdev->discovery.rssi && 8466 !test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks)))) 8467 return false; 8468 8469 if (hdev->discovery.uuid_count != 0) { 8470 /* If a list of UUIDs is provided in filter, results with no 8471 * matching UUID should be dropped. 8472 */ 8473 if (!eir_has_uuids(eir, eir_len, hdev->discovery.uuid_count, 8474 hdev->discovery.uuids) && 8475 !eir_has_uuids(scan_rsp, scan_rsp_len, 8476 hdev->discovery.uuid_count, 8477 hdev->discovery.uuids)) 8478 return false; 8479 } 8480 8481 /* If duplicate filtering does not report RSSI changes, then restart 8482 * scanning to ensure updated result with updated RSSI values. 8483 */ 8484 if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks)) { 8485 restart_le_scan(hdev); 8486 8487 /* Validate RSSI value against the RSSI threshold once more. */ 8488 if (hdev->discovery.rssi != HCI_RSSI_INVALID && 8489 rssi < hdev->discovery.rssi) 8490 return false; 8491 } 8492 8493 return true; 8494 } 8495 8496 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 8497 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 8498 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len) 8499 { 8500 char buf[512]; 8501 struct mgmt_ev_device_found *ev = (void *)buf; 8502 size_t ev_size; 8503 8504 /* Don't send events for a non-kernel initiated discovery. With 8505 * LE one exception is if we have pend_le_reports > 0 in which 8506 * case we're doing passive scanning and want these events. 8507 */ 8508 if (!hci_discovery_active(hdev)) { 8509 if (link_type == ACL_LINK) 8510 return; 8511 if (link_type == LE_LINK && list_empty(&hdev->pend_le_reports)) 8512 return; 8513 } 8514 8515 if (hdev->discovery.result_filtering) { 8516 /* We are using service discovery */ 8517 if (!is_filter_match(hdev, rssi, eir, eir_len, scan_rsp, 8518 scan_rsp_len)) 8519 return; 8520 } 8521 8522 /* Make sure that the buffer is big enough. The 5 extra bytes 8523 * are for the potential CoD field. 8524 */ 8525 if (sizeof(*ev) + eir_len + scan_rsp_len + 5 > sizeof(buf)) 8526 return; 8527 8528 memset(buf, 0, sizeof(buf)); 8529 8530 /* In case of device discovery with BR/EDR devices (pre 1.2), the 8531 * RSSI value was reported as 0 when not available. This behavior 8532 * is kept when using device discovery. This is required for full 8533 * backwards compatibility with the API. 8534 * 8535 * However when using service discovery, the value 127 will be 8536 * returned when the RSSI is not available. 8537 */ 8538 if (rssi == HCI_RSSI_INVALID && !hdev->discovery.report_invalid_rssi && 8539 link_type == ACL_LINK) 8540 rssi = 0; 8541 8542 bacpy(&ev->addr.bdaddr, bdaddr); 8543 ev->addr.type = link_to_bdaddr(link_type, addr_type); 8544 ev->rssi = rssi; 8545 ev->flags = cpu_to_le32(flags); 8546 8547 if (eir_len > 0) 8548 /* Copy EIR or advertising data into event */ 8549 memcpy(ev->eir, eir, eir_len); 8550 8551 if (dev_class && !eir_has_data_type(ev->eir, eir_len, EIR_CLASS_OF_DEV)) 8552 eir_len = eir_append_data(ev->eir, eir_len, EIR_CLASS_OF_DEV, 8553 dev_class, 3); 8554 8555 if (scan_rsp_len > 0) 8556 /* Append scan response data to event */ 8557 memcpy(ev->eir + eir_len, scan_rsp, scan_rsp_len); 8558 8559 ev->eir_len = cpu_to_le16(eir_len + scan_rsp_len); 8560 ev_size = sizeof(*ev) + eir_len + scan_rsp_len; 8561 8562 mgmt_event(MGMT_EV_DEVICE_FOUND, hdev, ev, ev_size, NULL); 8563 } 8564 8565 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 8566 u8 addr_type, s8 rssi, u8 *name, u8 name_len) 8567 { 8568 struct mgmt_ev_device_found *ev; 8569 char buf[sizeof(*ev) + HCI_MAX_NAME_LENGTH + 2]; 8570 u16 eir_len; 8571 8572 ev = (struct mgmt_ev_device_found *) buf; 8573 8574 memset(buf, 0, sizeof(buf)); 8575 8576 bacpy(&ev->addr.bdaddr, bdaddr); 8577 ev->addr.type = link_to_bdaddr(link_type, addr_type); 8578 ev->rssi = rssi; 8579 8580 eir_len = eir_append_data(ev->eir, 0, EIR_NAME_COMPLETE, name, 8581 name_len); 8582 8583 ev->eir_len = cpu_to_le16(eir_len); 8584 8585 mgmt_event(MGMT_EV_DEVICE_FOUND, hdev, ev, sizeof(*ev) + eir_len, NULL); 8586 } 8587 8588 void mgmt_discovering(struct hci_dev *hdev, u8 discovering) 8589 { 8590 struct mgmt_ev_discovering ev; 8591 8592 BT_DBG("%s discovering %u", hdev->name, discovering); 8593 8594 memset(&ev, 0, sizeof(ev)); 8595 ev.type = hdev->discovery.type; 8596 ev.discovering = discovering; 8597 8598 mgmt_event(MGMT_EV_DISCOVERING, hdev, &ev, sizeof(ev), NULL); 8599 } 8600 8601 static void adv_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode) 8602 { 8603 BT_DBG("%s status %u", hdev->name, status); 8604 } 8605 8606 void mgmt_reenable_advertising(struct hci_dev *hdev) 8607 { 8608 struct hci_request req; 8609 u8 instance; 8610 8611 if (!hci_dev_test_flag(hdev, HCI_ADVERTISING) && 8612 !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE)) 8613 return; 8614 8615 instance = get_current_adv_instance(hdev); 8616 8617 hci_req_init(&req, hdev); 8618 8619 if (instance) { 8620 schedule_adv_instance(&req, instance, true); 8621 } else { 8622 update_adv_data(&req); 8623 update_scan_rsp_data(&req); 8624 enable_advertising(&req); 8625 } 8626 8627 hci_req_run(&req, adv_enable_complete); 8628 } 8629 8630 static struct hci_mgmt_chan chan = { 8631 .channel = HCI_CHANNEL_CONTROL, 8632 .handler_count = ARRAY_SIZE(mgmt_handlers), 8633 .handlers = mgmt_handlers, 8634 .hdev_init = mgmt_init_hdev, 8635 }; 8636 8637 int mgmt_init(void) 8638 { 8639 return hci_mgmt_chan_register(&chan); 8640 } 8641 8642 void mgmt_exit(void) 8643 { 8644 hci_mgmt_chan_unregister(&chan); 8645 } 8646