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