net/mac802154/cfg.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *
   4  * Authors:
   5  * Alexander Aring <aar@pengutronix.de>
   6  *
   7  * Based on: net/mac80211/cfg.c
   8  */
   9
  10 #include <net/rtnetlink.h>
  11 #include <net/cfg802154.h>
  12
  13 #include "ieee802154_i.h"
  14 #include "driver-ops.h"
  15 #include "cfg.h"
  16
  17 static struct net_device *
  18 ieee802154_add_iface_deprecated(struct wpan_phy *wpan_phy,
  19                                 const char *name,
  20                                 unsigned char name_assign_type, int type)
  21 {
  22         struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
  23         struct net_device *dev;
  24
  25         rtnl_lock();
  26         dev = ieee802154_if_add(local, name, name_assign_type, type,
  27                                 cpu_to_le64(0x0000000000000000ULL));
  28         rtnl_unlock();
  29
  30         return dev;
  31 }
  32
  33 static void ieee802154_del_iface_deprecated(struct wpan_phy *wpan_phy,
  34                                             struct net_device *dev)
  35 {
  36         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
  37
  38         ieee802154_if_remove(sdata);
  39 }
  40
  41 #ifdef CONFIG_PM
  42 static int ieee802154_suspend(struct wpan_phy *wpan_phy)
  43 {
  44         struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
  45
  46         if (!local->open_count)
  47                 goto suspend;
  48
  49         ieee802154_sync_and_hold_queue(local);
  50         synchronize_net();
  51
  52         /* stop hardware - this must stop RX */
  53         ieee802154_stop_device(local);
  54
  55 suspend:
  56         local->suspended = true;
  57         return 0;
  58 }
  59
  60 static int ieee802154_resume(struct wpan_phy *wpan_phy)
  61 {
  62         struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
  63         int ret;
  64
  65         /* nothing to do if HW shouldn't run */
  66         if (!local->open_count)
  67                 goto wake_up;
  68
  69         /* restart hardware */
  70         ret = drv_start(local, local->phy->filtering, &local->addr_filt);
  71         if (ret)
  72                 return ret;
  73
  74 wake_up:
  75         ieee802154_release_queue(local);
  76         local->suspended = false;
  77         return 0;
  78 }
  79 #else
  80 #define ieee802154_suspend NULL
  81 #define ieee802154_resume NULL
  82 #endif
  83
  84 static int
  85 ieee802154_add_iface(struct wpan_phy *phy, const char *name,
  86                      unsigned char name_assign_type,
  87                      enum nl802154_iftype type, __le64 extended_addr)
  88 {
  89         struct ieee802154_local *local = wpan_phy_priv(phy);
  90         struct net_device *err;
  91
  92         err = ieee802154_if_add(local, name, name_assign_type, type,
  93                                 extended_addr);
  94         return PTR_ERR_OR_ZERO(err);
  95 }
  96
  97 static int
  98 ieee802154_del_iface(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev)
  99 {
 100         ieee802154_if_remove(IEEE802154_WPAN_DEV_TO_SUB_IF(wpan_dev));
 101
 102         return 0;
 103 }
 104
 105 static int
 106 ieee802154_set_channel(struct wpan_phy *wpan_phy, u8 page, u8 channel)
 107 {
 108         struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
 109         int ret;
 110
 111         ASSERT_RTNL();
 112
 113         if (wpan_phy->current_page == page &&
 114             wpan_phy->current_channel == channel)
 115                 return 0;
 116
 117         /* Refuse to change channels during scanning or beaconing */
 118         if (mac802154_is_scanning(local) || mac802154_is_beaconing(local))
 119                 return -EBUSY;
 120
 121         ret = drv_set_channel(local, page, channel);
 122         if (!ret) {
 123                 wpan_phy->current_page = page;
 124                 wpan_phy->current_channel = channel;
 125                 ieee802154_configure_durations(wpan_phy, page, channel);
 126         }
 127
 128         return ret;
 129 }
 130
 131 static int
 132 ieee802154_set_cca_mode(struct wpan_phy *wpan_phy,
 133                         const struct wpan_phy_cca *cca)
 134 {
 135         struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
 136         int ret;
 137
 138         ASSERT_RTNL();
 139
 140         if (wpan_phy_cca_cmp(&wpan_phy->cca, cca))
 141                 return 0;
 142
 143         ret = drv_set_cca_mode(local, cca);
 144         if (!ret)
 145                 wpan_phy->cca = *cca;
 146
 147         return ret;
 148 }
 149
 150 static int
 151 ieee802154_set_cca_ed_level(struct wpan_phy *wpan_phy, s32 ed_level)
 152 {
 153         struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
 154         int ret;
 155
 156         ASSERT_RTNL();
 157
 158         if (wpan_phy->cca_ed_level == ed_level)
 159                 return 0;
 160
 161         ret = drv_set_cca_ed_level(local, ed_level);
 162         if (!ret)
 163                 wpan_phy->cca_ed_level = ed_level;
 164
 165         return ret;
 166 }
 167
 168 static int
 169 ieee802154_set_tx_power(struct wpan_phy *wpan_phy, s32 power)
 170 {
 171         struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
 172         int ret;
 173
 174         ASSERT_RTNL();
 175
 176         if (wpan_phy->transmit_power == power)
 177                 return 0;
 178
 179         ret = drv_set_tx_power(local, power);
 180         if (!ret)
 181                 wpan_phy->transmit_power = power;
 182
 183         return ret;
 184 }
 185
 186 static int
 187 ieee802154_set_pan_id(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 188                       __le16 pan_id)
 189 {
 190         int ret;
 191
 192         ASSERT_RTNL();
 193
 194         if (wpan_dev->pan_id == pan_id)
 195                 return 0;
 196
 197         ret = mac802154_wpan_update_llsec(wpan_dev->netdev);
 198         if (!ret)
 199                 wpan_dev->pan_id = pan_id;
 200
 201         return ret;
 202 }
 203
 204 static int
 205 ieee802154_set_backoff_exponent(struct wpan_phy *wpan_phy,
 206                                 struct wpan_dev *wpan_dev,
 207                                 u8 min_be, u8 max_be)
 208 {
 209         ASSERT_RTNL();
 210
 211         wpan_dev->min_be = min_be;
 212         wpan_dev->max_be = max_be;
 213         return 0;
 214 }
 215
 216 static int
 217 ieee802154_set_short_addr(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 218                           __le16 short_addr)
 219 {
 220         ASSERT_RTNL();
 221
 222         wpan_dev->short_addr = short_addr;
 223         return 0;
 224 }
 225
 226 static int
 227 ieee802154_set_max_csma_backoffs(struct wpan_phy *wpan_phy,
 228                                  struct wpan_dev *wpan_dev,
 229                                  u8 max_csma_backoffs)
 230 {
 231         ASSERT_RTNL();
 232
 233         wpan_dev->csma_retries = max_csma_backoffs;
 234         return 0;
 235 }
 236
 237 static int
 238 ieee802154_set_max_frame_retries(struct wpan_phy *wpan_phy,
 239                                  struct wpan_dev *wpan_dev,
 240                                  s8 max_frame_retries)
 241 {
 242         ASSERT_RTNL();
 243
 244         wpan_dev->frame_retries = max_frame_retries;
 245         return 0;
 246 }
 247
 248 static int
 249 ieee802154_set_lbt_mode(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 250                         bool mode)
 251 {
 252         ASSERT_RTNL();
 253
 254         wpan_dev->lbt = mode;
 255         return 0;
 256 }
 257
 258 static int
 259 ieee802154_set_ackreq_default(struct wpan_phy *wpan_phy,
 260                               struct wpan_dev *wpan_dev, bool ackreq)
 261 {
 262         ASSERT_RTNL();
 263
 264         wpan_dev->ackreq = ackreq;
 265         return 0;
 266 }
 267
 268 static int mac802154_trigger_scan(struct wpan_phy *wpan_phy,
 269                                   struct cfg802154_scan_request *request)
 270 {
 271         struct ieee802154_sub_if_data *sdata;
 272
 273         sdata = IEEE802154_WPAN_DEV_TO_SUB_IF(request->wpan_dev);
 274
 275         ASSERT_RTNL();
 276
 277         return mac802154_trigger_scan_locked(sdata, request);
 278 }
 279
 280 static int mac802154_abort_scan(struct wpan_phy *wpan_phy,
 281                                 struct wpan_dev *wpan_dev)
 282 {
 283         struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
 284         struct ieee802154_sub_if_data *sdata;
 285
 286         sdata = IEEE802154_WPAN_DEV_TO_SUB_IF(wpan_dev);
 287
 288         ASSERT_RTNL();
 289
 290         return mac802154_abort_scan_locked(local, sdata);
 291 }
 292
 293 static int mac802154_send_beacons(struct wpan_phy *wpan_phy,
 294                                   struct cfg802154_beacon_request *request)
 295 {
 296         struct ieee802154_sub_if_data *sdata;
 297
 298         sdata = IEEE802154_WPAN_DEV_TO_SUB_IF(request->wpan_dev);
 299
 300         ASSERT_RTNL();
 301
 302         return mac802154_send_beacons_locked(sdata, request);
 303 }
 304
 305 static int mac802154_stop_beacons(struct wpan_phy *wpan_phy,
 306                                   struct wpan_dev *wpan_dev)
 307 {
 308         struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
 309         struct ieee802154_sub_if_data *sdata;
 310
 311         sdata = IEEE802154_WPAN_DEV_TO_SUB_IF(wpan_dev);
 312
 313         ASSERT_RTNL();
 314
 315         return mac802154_stop_beacons_locked(local, sdata);
 316 }
 317
 318 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
 319 static void
 320 ieee802154_get_llsec_table(struct wpan_phy *wpan_phy,
 321                            struct wpan_dev *wpan_dev,
 322                            struct ieee802154_llsec_table **table)
 323 {
 324         struct net_device *dev = wpan_dev->netdev;
 325         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 326
 327         *table = &sdata->sec.table;
 328 }
 329
 330 static void
 331 ieee802154_lock_llsec_table(struct wpan_phy *wpan_phy,
 332                             struct wpan_dev *wpan_dev)
 333 {
 334         struct net_device *dev = wpan_dev->netdev;
 335         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 336
 337         mutex_lock(&sdata->sec_mtx);
 338 }
 339
 340 static void
 341 ieee802154_unlock_llsec_table(struct wpan_phy *wpan_phy,
 342                               struct wpan_dev *wpan_dev)
 343 {
 344         struct net_device *dev = wpan_dev->netdev;
 345         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 346
 347         mutex_unlock(&sdata->sec_mtx);
 348 }
 349
 350 static int
 351 ieee802154_set_llsec_params(struct wpan_phy *wpan_phy,
 352                             struct wpan_dev *wpan_dev,
 353                             const struct ieee802154_llsec_params *params,
 354                             int changed)
 355 {
 356         struct net_device *dev = wpan_dev->netdev;
 357         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 358         int res;
 359
 360         mutex_lock(&sdata->sec_mtx);
 361         res = mac802154_llsec_set_params(&sdata->sec, params, changed);
 362         mutex_unlock(&sdata->sec_mtx);
 363
 364         return res;
 365 }
 366
 367 static int
 368 ieee802154_get_llsec_params(struct wpan_phy *wpan_phy,
 369                             struct wpan_dev *wpan_dev,
 370                             struct ieee802154_llsec_params *params)
 371 {
 372         struct net_device *dev = wpan_dev->netdev;
 373         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 374         int res;
 375
 376         mutex_lock(&sdata->sec_mtx);
 377         res = mac802154_llsec_get_params(&sdata->sec, params);
 378         mutex_unlock(&sdata->sec_mtx);
 379
 380         return res;
 381 }
 382
 383 static int
 384 ieee802154_add_llsec_key(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 385                          const struct ieee802154_llsec_key_id *id,
 386                          const struct ieee802154_llsec_key *key)
 387 {
 388         struct net_device *dev = wpan_dev->netdev;
 389         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 390         int res;
 391
 392         mutex_lock(&sdata->sec_mtx);
 393         res = mac802154_llsec_key_add(&sdata->sec, id, key);
 394         mutex_unlock(&sdata->sec_mtx);
 395
 396         return res;
 397 }
 398
 399 static int
 400 ieee802154_del_llsec_key(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 401                          const struct ieee802154_llsec_key_id *id)
 402 {
 403         struct net_device *dev = wpan_dev->netdev;
 404         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 405         int res;
 406
 407         mutex_lock(&sdata->sec_mtx);
 408         res = mac802154_llsec_key_del(&sdata->sec, id);
 409         mutex_unlock(&sdata->sec_mtx);
 410
 411         return res;
 412 }
 413
 414 static int
 415 ieee802154_add_seclevel(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 416                         const struct ieee802154_llsec_seclevel *sl)
 417 {
 418         struct net_device *dev = wpan_dev->netdev;
 419         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 420         int res;
 421
 422         mutex_lock(&sdata->sec_mtx);
 423         res = mac802154_llsec_seclevel_add(&sdata->sec, sl);
 424         mutex_unlock(&sdata->sec_mtx);
 425
 426         return res;
 427 }
 428
 429 static int
 430 ieee802154_del_seclevel(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 431                         const struct ieee802154_llsec_seclevel *sl)
 432 {
 433         struct net_device *dev = wpan_dev->netdev;
 434         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 435         int res;
 436
 437         mutex_lock(&sdata->sec_mtx);
 438         res = mac802154_llsec_seclevel_del(&sdata->sec, sl);
 439         mutex_unlock(&sdata->sec_mtx);
 440
 441         return res;
 442 }
 443
 444 static int
 445 ieee802154_add_device(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 446                       const struct ieee802154_llsec_device *dev_desc)
 447 {
 448         struct net_device *dev = wpan_dev->netdev;
 449         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 450         int res;
 451
 452         mutex_lock(&sdata->sec_mtx);
 453         res = mac802154_llsec_dev_add(&sdata->sec, dev_desc);
 454         mutex_unlock(&sdata->sec_mtx);
 455
 456         return res;
 457 }
 458
 459 static int
 460 ieee802154_del_device(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 461                       __le64 extended_addr)
 462 {
 463         struct net_device *dev = wpan_dev->netdev;
 464         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 465         int res;
 466
 467         mutex_lock(&sdata->sec_mtx);
 468         res = mac802154_llsec_dev_del(&sdata->sec, extended_addr);
 469         mutex_unlock(&sdata->sec_mtx);
 470
 471         return res;
 472 }
 473
 474 static int
 475 ieee802154_add_devkey(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 476                       __le64 extended_addr,
 477                       const struct ieee802154_llsec_device_key *key)
 478 {
 479         struct net_device *dev = wpan_dev->netdev;
 480         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 481         int res;
 482
 483         mutex_lock(&sdata->sec_mtx);
 484         res = mac802154_llsec_devkey_add(&sdata->sec, extended_addr, key);
 485         mutex_unlock(&sdata->sec_mtx);
 486
 487         return res;
 488 }
 489
 490 static int
 491 ieee802154_del_devkey(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 492                       __le64 extended_addr,
 493                       const struct ieee802154_llsec_device_key *key)
 494 {
 495         struct net_device *dev = wpan_dev->netdev;
 496         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 497         int res;
 498
 499         mutex_lock(&sdata->sec_mtx);
 500         res = mac802154_llsec_devkey_del(&sdata->sec, extended_addr, key);
 501         mutex_unlock(&sdata->sec_mtx);
 502
 503         return res;
 504 }
 505 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
 506
 507 const struct cfg802154_ops mac802154_config_ops = {
 508         .add_virtual_intf_deprecated = ieee802154_add_iface_deprecated,
 509         .del_virtual_intf_deprecated = ieee802154_del_iface_deprecated,
 510         .suspend = ieee802154_suspend,
 511         .resume = ieee802154_resume,
 512         .add_virtual_intf = ieee802154_add_iface,
 513         .del_virtual_intf = ieee802154_del_iface,
 514         .set_channel = ieee802154_set_channel,
 515         .set_cca_mode = ieee802154_set_cca_mode,
 516         .set_cca_ed_level = ieee802154_set_cca_ed_level,
 517         .set_tx_power = ieee802154_set_tx_power,
 518         .set_pan_id = ieee802154_set_pan_id,
 519         .set_short_addr = ieee802154_set_short_addr,
 520         .set_backoff_exponent = ieee802154_set_backoff_exponent,
 521         .set_max_csma_backoffs = ieee802154_set_max_csma_backoffs,
 522         .set_max_frame_retries = ieee802154_set_max_frame_retries,
 523         .set_lbt_mode = ieee802154_set_lbt_mode,
 524         .set_ackreq_default = ieee802154_set_ackreq_default,
 525         .trigger_scan = mac802154_trigger_scan,
 526         .abort_scan = mac802154_abort_scan,
 527         .send_beacons = mac802154_send_beacons,
 528         .stop_beacons = mac802154_stop_beacons,
 529 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
 530         .get_llsec_table = ieee802154_get_llsec_table,
 531         .lock_llsec_table = ieee802154_lock_llsec_table,
 532         .unlock_llsec_table = ieee802154_unlock_llsec_table,
 533         /* TODO above */
 534         .set_llsec_params = ieee802154_set_llsec_params,
 535         .get_llsec_params = ieee802154_get_llsec_params,
 536         .add_llsec_key = ieee802154_add_llsec_key,
 537         .del_llsec_key = ieee802154_del_llsec_key,
 538         .add_seclevel = ieee802154_add_seclevel,
 539         .del_seclevel = ieee802154_del_seclevel,
 540         .add_device = ieee802154_add_device,
 541         .del_device = ieee802154_del_device,
 542         .add_devkey = ieee802154_add_devkey,
 543         .del_devkey = ieee802154_del_devkey,
 544 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
 545 };