net/bluetooth/hci_debugfs.c

   1 /*
   2    BlueZ - Bluetooth protocol stack for Linux
   3
   4    Copyright (C) 2014 Intel Corporation
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License version 2 as
   8    published by the Free Software Foundation;
   9
  10    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  11    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  12    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
  13    IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
  14    CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
  15    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  16    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  17    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  18
  19    ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
  20    COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
  21    SOFTWARE IS DISCLAIMED.
  22 */
  23
  24 #include <linux/debugfs.h>
  25
  26 #include <net/bluetooth/bluetooth.h>
  27 #include <net/bluetooth/hci_core.h>
  28
  29 #include "hci_debugfs.h"
  30
  31 #define DEFINE_QUIRK_ATTRIBUTE(__name, __quirk)                               \
  32 static ssize_t __name ## _read(struct file *file,                             \
  33                                 char __user *user_buf,                        \
  34                                 size_t count, loff_t *ppos)                   \
  35 {                                                                             \
  36         struct hci_dev *hdev = file->private_data;                            \
  37         char buf[3];                                                          \
  38                                                                               \
  39         buf[0] = test_bit(__quirk, &hdev->quirks) ? 'Y' : 'N';                \
  40         buf[1] = '\n';                                                        \
  41         buf[2] = '\0';                                                        \
  42         return simple_read_from_buffer(user_buf, count, ppos, buf, 2);        \
  43 }                                                                             \
  44                                                                               \
  45 static ssize_t __name ## _write(struct file *file,                            \
  46                                  const char __user *user_buf,                 \
  47                                  size_t count, loff_t *ppos)                  \
  48 {                                                                             \
  49         struct hci_dev *hdev = file->private_data;                            \
  50         char buf[32];                                                         \
  51         size_t buf_size = min(count, (sizeof(buf) - 1));                      \
  52         bool enable;                                                          \
  53                                                                               \
  54         if (test_bit(HCI_UP, &hdev->flags))                                   \
  55                 return -EBUSY;                                                \
  56                                                                               \
  57         if (copy_from_user(buf, user_buf, buf_size))                          \
  58                 return -EFAULT;                                               \
  59                                                                               \
  60         buf[buf_size] = '\0';                                                 \
  61         if (strtobool(buf, &enable))                                          \
  62                 return -EINVAL;                                               \
  63                                                                               \
  64         if (enable == test_bit(__quirk, &hdev->quirks))                       \
  65                 return -EALREADY;                                             \
  66                                                                               \
  67         change_bit(__quirk, &hdev->quirks);                                   \
  68                                                                               \
  69         return count;                                                         \
  70 }                                                                             \
  71                                                                               \
  72 static const struct file_operations __name ## _fops = {                       \
  73         .open           = simple_open,                                        \
  74         .read           = __name ## _read,                                    \
  75         .write          = __name ## _write,                                   \
  76         .llseek         = default_llseek,                                     \
  77 }                                                                             \
  78
  79 #define DEFINE_INFO_ATTRIBUTE(__name, __field)                                \
  80 static int __name ## _show(struct seq_file *f, void *ptr)                     \
  81 {                                                                             \
  82         struct hci_dev *hdev = f->private;                                    \
  83                                                                               \
  84         hci_dev_lock(hdev);                                                   \
  85         seq_printf(f, "%s\n", hdev->__field ? : "");                          \
  86         hci_dev_unlock(hdev);                                                 \
  87                                                                               \
  88         return 0;                                                             \
  89 }                                                                             \
  90                                                                               \
  91 DEFINE_SHOW_ATTRIBUTE(__name)
  92
  93 static int features_show(struct seq_file *f, void *ptr)
  94 {
  95         struct hci_dev *hdev = f->private;
  96         u8 p;
  97
  98         hci_dev_lock(hdev);
  99         for (p = 0; p < HCI_MAX_PAGES && p <= hdev->max_page; p++)
 100                 seq_printf(f, "%2u: %8ph\n", p, hdev->features[p]);
 101         if (lmp_le_capable(hdev))
 102                 seq_printf(f, "LE: %8ph\n", hdev->le_features);
 103         hci_dev_unlock(hdev);
 104
 105         return 0;
 106 }
 107
 108 DEFINE_SHOW_ATTRIBUTE(features);
 109
 110 static int device_id_show(struct seq_file *f, void *ptr)
 111 {
 112         struct hci_dev *hdev = f->private;
 113
 114         hci_dev_lock(hdev);
 115         seq_printf(f, "%4.4x:%4.4x:%4.4x:%4.4x\n", hdev->devid_source,
 116                   hdev->devid_vendor, hdev->devid_product, hdev->devid_version);
 117         hci_dev_unlock(hdev);
 118
 119         return 0;
 120 }
 121
 122 DEFINE_SHOW_ATTRIBUTE(device_id);
 123
 124 static int device_list_show(struct seq_file *f, void *ptr)
 125 {
 126         struct hci_dev *hdev = f->private;
 127         struct hci_conn_params *p;
 128         struct bdaddr_list *b;
 129
 130         hci_dev_lock(hdev);
 131         list_for_each_entry(b, &hdev->whitelist, list)
 132                 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
 133         list_for_each_entry(p, &hdev->le_conn_params, list) {
 134                 seq_printf(f, "%pMR (type %u) %u\n", &p->addr, p->addr_type,
 135                            p->auto_connect);
 136         }
 137         hci_dev_unlock(hdev);
 138
 139         return 0;
 140 }
 141
 142 DEFINE_SHOW_ATTRIBUTE(device_list);
 143
 144 static int blacklist_show(struct seq_file *f, void *p)
 145 {
 146         struct hci_dev *hdev = f->private;
 147         struct bdaddr_list *b;
 148
 149         hci_dev_lock(hdev);
 150         list_for_each_entry(b, &hdev->blacklist, list)
 151                 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
 152         hci_dev_unlock(hdev);
 153
 154         return 0;
 155 }
 156
 157 DEFINE_SHOW_ATTRIBUTE(blacklist);
 158
 159 static int uuids_show(struct seq_file *f, void *p)
 160 {
 161         struct hci_dev *hdev = f->private;
 162         struct bt_uuid *uuid;
 163
 164         hci_dev_lock(hdev);
 165         list_for_each_entry(uuid, &hdev->uuids, list) {
 166                 u8 i, val[16];
 167
 168                 /* The Bluetooth UUID values are stored in big endian,
 169                  * but with reversed byte order. So convert them into
 170                  * the right order for the %pUb modifier.
 171                  */
 172                 for (i = 0; i < 16; i++)
 173                         val[i] = uuid->uuid[15 - i];
 174
 175                 seq_printf(f, "%pUb\n", val);
 176         }
 177         hci_dev_unlock(hdev);
 178
 179        return 0;
 180 }
 181
 182 DEFINE_SHOW_ATTRIBUTE(uuids);
 183
 184 static int remote_oob_show(struct seq_file *f, void *ptr)
 185 {
 186         struct hci_dev *hdev = f->private;
 187         struct oob_data *data;
 188
 189         hci_dev_lock(hdev);
 190         list_for_each_entry(data, &hdev->remote_oob_data, list) {
 191                 seq_printf(f, "%pMR (type %u) %u %*phN %*phN %*phN %*phN\n",
 192                            &data->bdaddr, data->bdaddr_type, data->present,
 193                            16, data->hash192, 16, data->rand192,
 194                            16, data->hash256, 16, data->rand256);
 195         }
 196         hci_dev_unlock(hdev);
 197
 198         return 0;
 199 }
 200
 201 DEFINE_SHOW_ATTRIBUTE(remote_oob);
 202
 203 static int conn_info_min_age_set(void *data, u64 val)
 204 {
 205         struct hci_dev *hdev = data;
 206
 207         if (val == 0 || val > hdev->conn_info_max_age)
 208                 return -EINVAL;
 209
 210         hci_dev_lock(hdev);
 211         hdev->conn_info_min_age = val;
 212         hci_dev_unlock(hdev);
 213
 214         return 0;
 215 }
 216
 217 static int conn_info_min_age_get(void *data, u64 *val)
 218 {
 219         struct hci_dev *hdev = data;
 220
 221         hci_dev_lock(hdev);
 222         *val = hdev->conn_info_min_age;
 223         hci_dev_unlock(hdev);
 224
 225         return 0;
 226 }
 227
 228 DEFINE_SIMPLE_ATTRIBUTE(conn_info_min_age_fops, conn_info_min_age_get,
 229                         conn_info_min_age_set, "%llu\n");
 230
 231 static int conn_info_max_age_set(void *data, u64 val)
 232 {
 233         struct hci_dev *hdev = data;
 234
 235         if (val == 0 || val < hdev->conn_info_min_age)
 236                 return -EINVAL;
 237
 238         hci_dev_lock(hdev);
 239         hdev->conn_info_max_age = val;
 240         hci_dev_unlock(hdev);
 241
 242         return 0;
 243 }
 244
 245 static int conn_info_max_age_get(void *data, u64 *val)
 246 {
 247         struct hci_dev *hdev = data;
 248
 249         hci_dev_lock(hdev);
 250         *val = hdev->conn_info_max_age;
 251         hci_dev_unlock(hdev);
 252
 253         return 0;
 254 }
 255
 256 DEFINE_SIMPLE_ATTRIBUTE(conn_info_max_age_fops, conn_info_max_age_get,
 257                         conn_info_max_age_set, "%llu\n");
 258
 259 static ssize_t use_debug_keys_read(struct file *file, char __user *user_buf,
 260                                    size_t count, loff_t *ppos)
 261 {
 262         struct hci_dev *hdev = file->private_data;
 263         char buf[3];
 264
 265         buf[0] = hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS) ? 'Y': 'N';
 266         buf[1] = '\n';
 267         buf[2] = '\0';
 268         return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
 269 }
 270
 271 static const struct file_operations use_debug_keys_fops = {
 272         .open           = simple_open,
 273         .read           = use_debug_keys_read,
 274         .llseek         = default_llseek,
 275 };
 276
 277 static ssize_t sc_only_mode_read(struct file *file, char __user *user_buf,
 278                                  size_t count, loff_t *ppos)
 279 {
 280         struct hci_dev *hdev = file->private_data;
 281         char buf[3];
 282
 283         buf[0] = hci_dev_test_flag(hdev, HCI_SC_ONLY) ? 'Y': 'N';
 284         buf[1] = '\n';
 285         buf[2] = '\0';
 286         return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
 287 }
 288
 289 static const struct file_operations sc_only_mode_fops = {
 290         .open           = simple_open,
 291         .read           = sc_only_mode_read,
 292         .llseek         = default_llseek,
 293 };
 294
 295 DEFINE_INFO_ATTRIBUTE(hardware_info, hw_info);
 296 DEFINE_INFO_ATTRIBUTE(firmware_info, fw_info);
 297
 298 void hci_debugfs_create_common(struct hci_dev *hdev)
 299 {
 300         debugfs_create_file("features", 0444, hdev->debugfs, hdev,
 301                             &features_fops);
 302         debugfs_create_u16("manufacturer", 0444, hdev->debugfs,
 303                            &hdev->manufacturer);
 304         debugfs_create_u8("hci_version", 0444, hdev->debugfs, &hdev->hci_ver);
 305         debugfs_create_u16("hci_revision", 0444, hdev->debugfs, &hdev->hci_rev);
 306         debugfs_create_u8("hardware_error", 0444, hdev->debugfs,
 307                           &hdev->hw_error_code);
 308         debugfs_create_file("device_id", 0444, hdev->debugfs, hdev,
 309                             &device_id_fops);
 310
 311         debugfs_create_file("device_list", 0444, hdev->debugfs, hdev,
 312                             &device_list_fops);
 313         debugfs_create_file("blacklist", 0444, hdev->debugfs, hdev,
 314                             &blacklist_fops);
 315         debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops);
 316         debugfs_create_file("remote_oob", 0400, hdev->debugfs, hdev,
 317                             &remote_oob_fops);
 318
 319         debugfs_create_file("conn_info_min_age", 0644, hdev->debugfs, hdev,
 320                             &conn_info_min_age_fops);
 321         debugfs_create_file("conn_info_max_age", 0644, hdev->debugfs, hdev,
 322                             &conn_info_max_age_fops);
 323
 324         if (lmp_ssp_capable(hdev) || lmp_le_capable(hdev))
 325                 debugfs_create_file("use_debug_keys", 0444, hdev->debugfs,
 326                                     hdev, &use_debug_keys_fops);
 327
 328         if (lmp_sc_capable(hdev) || lmp_le_capable(hdev))
 329                 debugfs_create_file("sc_only_mode", 0444, hdev->debugfs,
 330                                     hdev, &sc_only_mode_fops);
 331
 332         if (hdev->hw_info)
 333                 debugfs_create_file("hardware_info", 0444, hdev->debugfs,
 334                                     hdev, &hardware_info_fops);
 335
 336         if (hdev->fw_info)
 337                 debugfs_create_file("firmware_info", 0444, hdev->debugfs,
 338                                     hdev, &firmware_info_fops);
 339 }
 340
 341 static int inquiry_cache_show(struct seq_file *f, void *p)
 342 {
 343         struct hci_dev *hdev = f->private;
 344         struct discovery_state *cache = &hdev->discovery;
 345         struct inquiry_entry *e;
 346
 347         hci_dev_lock(hdev);
 348
 349         list_for_each_entry(e, &cache->all, all) {
 350                 struct inquiry_data *data = &e->data;
 351                 seq_printf(f, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
 352                            &data->bdaddr,
 353                            data->pscan_rep_mode, data->pscan_period_mode,
 354                            data->pscan_mode, data->dev_class[2],
 355                            data->dev_class[1], data->dev_class[0],
 356                            __le16_to_cpu(data->clock_offset),
 357                            data->rssi, data->ssp_mode, e->timestamp);
 358         }
 359
 360         hci_dev_unlock(hdev);
 361
 362         return 0;
 363 }
 364
 365 DEFINE_SHOW_ATTRIBUTE(inquiry_cache);
 366
 367 static int link_keys_show(struct seq_file *f, void *ptr)
 368 {
 369         struct hci_dev *hdev = f->private;
 370         struct link_key *key;
 371
 372         rcu_read_lock();
 373         list_for_each_entry_rcu(key, &hdev->link_keys, list)
 374                 seq_printf(f, "%pMR %u %*phN %u\n", &key->bdaddr, key->type,
 375                            HCI_LINK_KEY_SIZE, key->val, key->pin_len);
 376         rcu_read_unlock();
 377
 378         return 0;
 379 }
 380
 381 DEFINE_SHOW_ATTRIBUTE(link_keys);
 382
 383 static int dev_class_show(struct seq_file *f, void *ptr)
 384 {
 385         struct hci_dev *hdev = f->private;
 386
 387         hci_dev_lock(hdev);
 388         seq_printf(f, "0x%.2x%.2x%.2x\n", hdev->dev_class[2],
 389                    hdev->dev_class[1], hdev->dev_class[0]);
 390         hci_dev_unlock(hdev);
 391
 392         return 0;
 393 }
 394
 395 DEFINE_SHOW_ATTRIBUTE(dev_class);
 396
 397 static int voice_setting_get(void *data, u64 *val)
 398 {
 399         struct hci_dev *hdev = data;
 400
 401         hci_dev_lock(hdev);
 402         *val = hdev->voice_setting;
 403         hci_dev_unlock(hdev);
 404
 405         return 0;
 406 }
 407
 408 DEFINE_SIMPLE_ATTRIBUTE(voice_setting_fops, voice_setting_get,
 409                         NULL, "0x%4.4llx\n");
 410
 411 static ssize_t ssp_debug_mode_read(struct file *file, char __user *user_buf,
 412                                    size_t count, loff_t *ppos)
 413 {
 414         struct hci_dev *hdev = file->private_data;
 415         char buf[3];
 416
 417         buf[0] = hdev->ssp_debug_mode ? 'Y': 'N';
 418         buf[1] = '\n';
 419         buf[2] = '\0';
 420         return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
 421 }
 422
 423 static const struct file_operations ssp_debug_mode_fops = {
 424         .open           = simple_open,
 425         .read           = ssp_debug_mode_read,
 426         .llseek         = default_llseek,
 427 };
 428
 429 static int auto_accept_delay_set(void *data, u64 val)
 430 {
 431         struct hci_dev *hdev = data;
 432
 433         hci_dev_lock(hdev);
 434         hdev->auto_accept_delay = val;
 435         hci_dev_unlock(hdev);
 436
 437         return 0;
 438 }
 439
 440 static int auto_accept_delay_get(void *data, u64 *val)
 441 {
 442         struct hci_dev *hdev = data;
 443
 444         hci_dev_lock(hdev);
 445         *val = hdev->auto_accept_delay;
 446         hci_dev_unlock(hdev);
 447
 448         return 0;
 449 }
 450
 451 DEFINE_SIMPLE_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get,
 452                         auto_accept_delay_set, "%llu\n");
 453
 454 static int idle_timeout_set(void *data, u64 val)
 455 {
 456         struct hci_dev *hdev = data;
 457
 458         if (val != 0 && (val < 500 || val > 3600000))
 459                 return -EINVAL;
 460
 461         hci_dev_lock(hdev);
 462         hdev->idle_timeout = val;
 463         hci_dev_unlock(hdev);
 464
 465         return 0;
 466 }
 467
 468 static int idle_timeout_get(void *data, u64 *val)
 469 {
 470         struct hci_dev *hdev = data;
 471
 472         hci_dev_lock(hdev);
 473         *val = hdev->idle_timeout;
 474         hci_dev_unlock(hdev);
 475
 476         return 0;
 477 }
 478
 479 DEFINE_SIMPLE_ATTRIBUTE(idle_timeout_fops, idle_timeout_get,
 480                         idle_timeout_set, "%llu\n");
 481
 482 static int sniff_min_interval_set(void *data, u64 val)
 483 {
 484         struct hci_dev *hdev = data;
 485
 486         if (val == 0 || val % 2 || val > hdev->sniff_max_interval)
 487                 return -EINVAL;
 488
 489         hci_dev_lock(hdev);
 490         hdev->sniff_min_interval = val;
 491         hci_dev_unlock(hdev);
 492
 493         return 0;
 494 }
 495
 496 static int sniff_min_interval_get(void *data, u64 *val)
 497 {
 498         struct hci_dev *hdev = data;
 499
 500         hci_dev_lock(hdev);
 501         *val = hdev->sniff_min_interval;
 502         hci_dev_unlock(hdev);
 503
 504         return 0;
 505 }
 506
 507 DEFINE_SIMPLE_ATTRIBUTE(sniff_min_interval_fops, sniff_min_interval_get,
 508                         sniff_min_interval_set, "%llu\n");
 509
 510 static int sniff_max_interval_set(void *data, u64 val)
 511 {
 512         struct hci_dev *hdev = data;
 513
 514         if (val == 0 || val % 2 || val < hdev->sniff_min_interval)
 515                 return -EINVAL;
 516
 517         hci_dev_lock(hdev);
 518         hdev->sniff_max_interval = val;
 519         hci_dev_unlock(hdev);
 520
 521         return 0;
 522 }
 523
 524 static int sniff_max_interval_get(void *data, u64 *val)
 525 {
 526         struct hci_dev *hdev = data;
 527
 528         hci_dev_lock(hdev);
 529         *val = hdev->sniff_max_interval;
 530         hci_dev_unlock(hdev);
 531
 532         return 0;
 533 }
 534
 535 DEFINE_SIMPLE_ATTRIBUTE(sniff_max_interval_fops, sniff_max_interval_get,
 536                         sniff_max_interval_set, "%llu\n");
 537
 538 void hci_debugfs_create_bredr(struct hci_dev *hdev)
 539 {
 540         debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, hdev,
 541                             &inquiry_cache_fops);
 542         debugfs_create_file("link_keys", 0400, hdev->debugfs, hdev,
 543                             &link_keys_fops);
 544         debugfs_create_file("dev_class", 0444, hdev->debugfs, hdev,
 545                             &dev_class_fops);
 546         debugfs_create_file("voice_setting", 0444, hdev->debugfs, hdev,
 547                             &voice_setting_fops);
 548
 549         if (lmp_ssp_capable(hdev)) {
 550                 debugfs_create_file("ssp_debug_mode", 0444, hdev->debugfs,
 551                                     hdev, &ssp_debug_mode_fops);
 552                 debugfs_create_file("auto_accept_delay", 0644, hdev->debugfs,
 553                                     hdev, &auto_accept_delay_fops);
 554         }
 555
 556         if (lmp_sniff_capable(hdev)) {
 557                 debugfs_create_file("idle_timeout", 0644, hdev->debugfs,
 558                                     hdev, &idle_timeout_fops);
 559                 debugfs_create_file("sniff_min_interval", 0644, hdev->debugfs,
 560                                     hdev, &sniff_min_interval_fops);
 561                 debugfs_create_file("sniff_max_interval", 0644, hdev->debugfs,
 562                                     hdev, &sniff_max_interval_fops);
 563         }
 564 }
 565
 566 static int identity_show(struct seq_file *f, void *p)
 567 {
 568         struct hci_dev *hdev = f->private;
 569         bdaddr_t addr;
 570         u8 addr_type;
 571
 572         hci_dev_lock(hdev);
 573
 574         hci_copy_identity_address(hdev, &addr, &addr_type);
 575
 576         seq_printf(f, "%pMR (type %u) %*phN %pMR\n", &addr, addr_type,
 577                    16, hdev->irk, &hdev->rpa);
 578
 579         hci_dev_unlock(hdev);
 580
 581         return 0;
 582 }
 583
 584 DEFINE_SHOW_ATTRIBUTE(identity);
 585
 586 static int rpa_timeout_set(void *data, u64 val)
 587 {
 588         struct hci_dev *hdev = data;
 589
 590         /* Require the RPA timeout to be at least 30 seconds and at most
 591          * 24 hours.
 592          */
 593         if (val < 30 || val > (60 * 60 * 24))
 594                 return -EINVAL;
 595
 596         hci_dev_lock(hdev);
 597         hdev->rpa_timeout = val;
 598         hci_dev_unlock(hdev);
 599
 600         return 0;
 601 }
 602
 603 static int rpa_timeout_get(void *data, u64 *val)
 604 {
 605         struct hci_dev *hdev = data;
 606
 607         hci_dev_lock(hdev);
 608         *val = hdev->rpa_timeout;
 609         hci_dev_unlock(hdev);
 610
 611         return 0;
 612 }
 613
 614 DEFINE_SIMPLE_ATTRIBUTE(rpa_timeout_fops, rpa_timeout_get,
 615                         rpa_timeout_set, "%llu\n");
 616
 617 static int random_address_show(struct seq_file *f, void *p)
 618 {
 619         struct hci_dev *hdev = f->private;
 620
 621         hci_dev_lock(hdev);
 622         seq_printf(f, "%pMR\n", &hdev->random_addr);
 623         hci_dev_unlock(hdev);
 624
 625         return 0;
 626 }
 627
 628 DEFINE_SHOW_ATTRIBUTE(random_address);
 629
 630 static int static_address_show(struct seq_file *f, void *p)
 631 {
 632         struct hci_dev *hdev = f->private;
 633
 634         hci_dev_lock(hdev);
 635         seq_printf(f, "%pMR\n", &hdev->static_addr);
 636         hci_dev_unlock(hdev);
 637
 638         return 0;
 639 }
 640
 641 DEFINE_SHOW_ATTRIBUTE(static_address);
 642
 643 static ssize_t force_static_address_read(struct file *file,
 644                                          char __user *user_buf,
 645                                          size_t count, loff_t *ppos)
 646 {
 647         struct hci_dev *hdev = file->private_data;
 648         char buf[3];
 649
 650         buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ? 'Y': 'N';
 651         buf[1] = '\n';
 652         buf[2] = '\0';
 653         return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
 654 }
 655
 656 static ssize_t force_static_address_write(struct file *file,
 657                                           const char __user *user_buf,
 658                                           size_t count, loff_t *ppos)
 659 {
 660         struct hci_dev *hdev = file->private_data;
 661         char buf[32];
 662         size_t buf_size = min(count, (sizeof(buf)-1));
 663         bool enable;
 664
 665         if (test_bit(HCI_UP, &hdev->flags))
 666                 return -EBUSY;
 667
 668         if (copy_from_user(buf, user_buf, buf_size))
 669                 return -EFAULT;
 670
 671         buf[buf_size] = '\0';
 672         if (strtobool(buf, &enable))
 673                 return -EINVAL;
 674
 675         if (enable == hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR))
 676                 return -EALREADY;
 677
 678         hci_dev_change_flag(hdev, HCI_FORCE_STATIC_ADDR);
 679
 680         return count;
 681 }
 682
 683 static const struct file_operations force_static_address_fops = {
 684         .open           = simple_open,
 685         .read           = force_static_address_read,
 686         .write          = force_static_address_write,
 687         .llseek         = default_llseek,
 688 };
 689
 690 static int white_list_show(struct seq_file *f, void *ptr)
 691 {
 692         struct hci_dev *hdev = f->private;
 693         struct bdaddr_list *b;
 694
 695         hci_dev_lock(hdev);
 696         list_for_each_entry(b, &hdev->le_white_list, list)
 697                 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
 698         hci_dev_unlock(hdev);
 699
 700         return 0;
 701 }
 702
 703 DEFINE_SHOW_ATTRIBUTE(white_list);
 704
 705 static int identity_resolving_keys_show(struct seq_file *f, void *ptr)
 706 {
 707         struct hci_dev *hdev = f->private;
 708         struct smp_irk *irk;
 709
 710         rcu_read_lock();
 711         list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) {
 712                 seq_printf(f, "%pMR (type %u) %*phN %pMR\n",
 713                            &irk->bdaddr, irk->addr_type,
 714                            16, irk->val, &irk->rpa);
 715         }
 716         rcu_read_unlock();
 717
 718         return 0;
 719 }
 720
 721 DEFINE_SHOW_ATTRIBUTE(identity_resolving_keys);
 722
 723 static int long_term_keys_show(struct seq_file *f, void *ptr)
 724 {
 725         struct hci_dev *hdev = f->private;
 726         struct smp_ltk *ltk;
 727
 728         rcu_read_lock();
 729         list_for_each_entry_rcu(ltk, &hdev->long_term_keys, list)
 730                 seq_printf(f, "%pMR (type %u) %u 0x%02x %u %.4x %.16llx %*phN\n",
 731                            &ltk->bdaddr, ltk->bdaddr_type, ltk->authenticated,
 732                            ltk->type, ltk->enc_size, __le16_to_cpu(ltk->ediv),
 733                            __le64_to_cpu(ltk->rand), 16, ltk->val);
 734         rcu_read_unlock();
 735
 736         return 0;
 737 }
 738
 739 DEFINE_SHOW_ATTRIBUTE(long_term_keys);
 740
 741 static int conn_min_interval_set(void *data, u64 val)
 742 {
 743         struct hci_dev *hdev = data;
 744
 745         if (val < 0x0006 || val > 0x0c80 || val > hdev->le_conn_max_interval)
 746                 return -EINVAL;
 747
 748         hci_dev_lock(hdev);
 749         hdev->le_conn_min_interval = val;
 750         hci_dev_unlock(hdev);
 751
 752         return 0;
 753 }
 754
 755 static int conn_min_interval_get(void *data, u64 *val)
 756 {
 757         struct hci_dev *hdev = data;
 758
 759         hci_dev_lock(hdev);
 760         *val = hdev->le_conn_min_interval;
 761         hci_dev_unlock(hdev);
 762
 763         return 0;
 764 }
 765
 766 DEFINE_SIMPLE_ATTRIBUTE(conn_min_interval_fops, conn_min_interval_get,
 767                         conn_min_interval_set, "%llu\n");
 768
 769 static int conn_max_interval_set(void *data, u64 val)
 770 {
 771         struct hci_dev *hdev = data;
 772
 773         if (val < 0x0006 || val > 0x0c80 || val < hdev->le_conn_min_interval)
 774                 return -EINVAL;
 775
 776         hci_dev_lock(hdev);
 777         hdev->le_conn_max_interval = val;
 778         hci_dev_unlock(hdev);
 779
 780         return 0;
 781 }
 782
 783 static int conn_max_interval_get(void *data, u64 *val)
 784 {
 785         struct hci_dev *hdev = data;
 786
 787         hci_dev_lock(hdev);
 788         *val = hdev->le_conn_max_interval;
 789         hci_dev_unlock(hdev);
 790
 791         return 0;
 792 }
 793
 794 DEFINE_SIMPLE_ATTRIBUTE(conn_max_interval_fops, conn_max_interval_get,
 795                         conn_max_interval_set, "%llu\n");
 796
 797 static int conn_latency_set(void *data, u64 val)
 798 {
 799         struct hci_dev *hdev = data;
 800
 801         if (val > 0x01f3)
 802                 return -EINVAL;
 803
 804         hci_dev_lock(hdev);
 805         hdev->le_conn_latency = val;
 806         hci_dev_unlock(hdev);
 807
 808         return 0;
 809 }
 810
 811 static int conn_latency_get(void *data, u64 *val)
 812 {
 813         struct hci_dev *hdev = data;
 814
 815         hci_dev_lock(hdev);
 816         *val = hdev->le_conn_latency;
 817         hci_dev_unlock(hdev);
 818
 819         return 0;
 820 }
 821
 822 DEFINE_SIMPLE_ATTRIBUTE(conn_latency_fops, conn_latency_get,
 823                         conn_latency_set, "%llu\n");
 824
 825 static int supervision_timeout_set(void *data, u64 val)
 826 {
 827         struct hci_dev *hdev = data;
 828
 829         if (val < 0x000a || val > 0x0c80)
 830                 return -EINVAL;
 831
 832         hci_dev_lock(hdev);
 833         hdev->le_supv_timeout = val;
 834         hci_dev_unlock(hdev);
 835
 836         return 0;
 837 }
 838
 839 static int supervision_timeout_get(void *data, u64 *val)
 840 {
 841         struct hci_dev *hdev = data;
 842
 843         hci_dev_lock(hdev);
 844         *val = hdev->le_supv_timeout;
 845         hci_dev_unlock(hdev);
 846
 847         return 0;
 848 }
 849
 850 DEFINE_SIMPLE_ATTRIBUTE(supervision_timeout_fops, supervision_timeout_get,
 851                         supervision_timeout_set, "%llu\n");
 852
 853 static int adv_channel_map_set(void *data, u64 val)
 854 {
 855         struct hci_dev *hdev = data;
 856
 857         if (val < 0x01 || val > 0x07)
 858                 return -EINVAL;
 859
 860         hci_dev_lock(hdev);
 861         hdev->le_adv_channel_map = val;
 862         hci_dev_unlock(hdev);
 863
 864         return 0;
 865 }
 866
 867 static int adv_channel_map_get(void *data, u64 *val)
 868 {
 869         struct hci_dev *hdev = data;
 870
 871         hci_dev_lock(hdev);
 872         *val = hdev->le_adv_channel_map;
 873         hci_dev_unlock(hdev);
 874
 875         return 0;
 876 }
 877
 878 DEFINE_SIMPLE_ATTRIBUTE(adv_channel_map_fops, adv_channel_map_get,
 879                         adv_channel_map_set, "%llu\n");
 880
 881 static int adv_min_interval_set(void *data, u64 val)
 882 {
 883         struct hci_dev *hdev = data;
 884
 885         if (val < 0x0020 || val > 0x4000 || val > hdev->le_adv_max_interval)
 886                 return -EINVAL;
 887
 888         hci_dev_lock(hdev);
 889         hdev->le_adv_min_interval = val;
 890         hci_dev_unlock(hdev);
 891
 892         return 0;
 893 }
 894
 895 static int adv_min_interval_get(void *data, u64 *val)
 896 {
 897         struct hci_dev *hdev = data;
 898
 899         hci_dev_lock(hdev);
 900         *val = hdev->le_adv_min_interval;
 901         hci_dev_unlock(hdev);
 902
 903         return 0;
 904 }
 905
 906 DEFINE_SIMPLE_ATTRIBUTE(adv_min_interval_fops, adv_min_interval_get,
 907                         adv_min_interval_set, "%llu\n");
 908
 909 static int adv_max_interval_set(void *data, u64 val)
 910 {
 911         struct hci_dev *hdev = data;
 912
 913         if (val < 0x0020 || val > 0x4000 || val < hdev->le_adv_min_interval)
 914                 return -EINVAL;
 915
 916         hci_dev_lock(hdev);
 917         hdev->le_adv_max_interval = val;
 918         hci_dev_unlock(hdev);
 919
 920         return 0;
 921 }
 922
 923 static int adv_max_interval_get(void *data, u64 *val)
 924 {
 925         struct hci_dev *hdev = data;
 926
 927         hci_dev_lock(hdev);
 928         *val = hdev->le_adv_max_interval;
 929         hci_dev_unlock(hdev);
 930
 931         return 0;
 932 }
 933
 934 DEFINE_SIMPLE_ATTRIBUTE(adv_max_interval_fops, adv_max_interval_get,
 935                         adv_max_interval_set, "%llu\n");
 936
 937 DEFINE_QUIRK_ATTRIBUTE(quirk_strict_duplicate_filter,
 938                        HCI_QUIRK_STRICT_DUPLICATE_FILTER);
 939 DEFINE_QUIRK_ATTRIBUTE(quirk_simultaneous_discovery,
 940                        HCI_QUIRK_SIMULTANEOUS_DISCOVERY);
 941
 942 void hci_debugfs_create_le(struct hci_dev *hdev)
 943 {
 944         debugfs_create_file("identity", 0400, hdev->debugfs, hdev,
 945                             &identity_fops);
 946         debugfs_create_file("rpa_timeout", 0644, hdev->debugfs, hdev,
 947                             &rpa_timeout_fops);
 948         debugfs_create_file("random_address", 0444, hdev->debugfs, hdev,
 949                             &random_address_fops);
 950         debugfs_create_file("static_address", 0444, hdev->debugfs, hdev,
 951                             &static_address_fops);
 952
 953         /* For controllers with a public address, provide a debug
 954          * option to force the usage of the configured static
 955          * address. By default the public address is used.
 956          */
 957         if (bacmp(&hdev->bdaddr, BDADDR_ANY))
 958                 debugfs_create_file("force_static_address", 0644,
 959                                     hdev->debugfs, hdev,
 960                                     &force_static_address_fops);
 961
 962         debugfs_create_u8("white_list_size", 0444, hdev->debugfs,
 963                           &hdev->le_white_list_size);
 964         debugfs_create_file("white_list", 0444, hdev->debugfs, hdev,
 965                             &white_list_fops);
 966         debugfs_create_file("identity_resolving_keys", 0400, hdev->debugfs,
 967                             hdev, &identity_resolving_keys_fops);
 968         debugfs_create_file("long_term_keys", 0400, hdev->debugfs, hdev,
 969                             &long_term_keys_fops);
 970         debugfs_create_file("conn_min_interval", 0644, hdev->debugfs, hdev,
 971                             &conn_min_interval_fops);
 972         debugfs_create_file("conn_max_interval", 0644, hdev->debugfs, hdev,
 973                             &conn_max_interval_fops);
 974         debugfs_create_file("conn_latency", 0644, hdev->debugfs, hdev,
 975                             &conn_latency_fops);
 976         debugfs_create_file("supervision_timeout", 0644, hdev->debugfs, hdev,
 977                             &supervision_timeout_fops);
 978         debugfs_create_file("adv_channel_map", 0644, hdev->debugfs, hdev,
 979                             &adv_channel_map_fops);
 980         debugfs_create_file("adv_min_interval", 0644, hdev->debugfs, hdev,
 981                             &adv_min_interval_fops);
 982         debugfs_create_file("adv_max_interval", 0644, hdev->debugfs, hdev,
 983                             &adv_max_interval_fops);
 984         debugfs_create_u16("discov_interleaved_timeout", 0644, hdev->debugfs,
 985                            &hdev->discov_interleaved_timeout);
 986
 987         debugfs_create_file("quirk_strict_duplicate_filter", 0644,
 988                             hdev->debugfs, hdev,
 989                             &quirk_strict_duplicate_filter_fops);
 990         debugfs_create_file("quirk_simultaneous_discovery", 0644,
 991                             hdev->debugfs, hdev,
 992                             &quirk_simultaneous_discovery_fops);
 993 }
 994
 995 void hci_debugfs_create_conn(struct hci_conn *conn)
 996 {
 997         struct hci_dev *hdev = conn->hdev;
 998         char name[6];
 999
1000         if (IS_ERR_OR_NULL(hdev->debugfs))
1001                 return;
1002
1003         snprintf(name, sizeof(name), "%u", conn->handle);
1004         conn->debugfs = debugfs_create_dir(name, hdev->debugfs);
1005 }