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 a scanning operation */
 118         if (mac802154_is_scanning(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 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
 294 static void
 295 ieee802154_get_llsec_table(struct wpan_phy *wpan_phy,
 296                            struct wpan_dev *wpan_dev,
 297                            struct ieee802154_llsec_table **table)
 298 {
 299         struct net_device *dev = wpan_dev->netdev;
 300         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 301
 302         *table = &sdata->sec.table;
 303 }
 304
 305 static void
 306 ieee802154_lock_llsec_table(struct wpan_phy *wpan_phy,
 307                             struct wpan_dev *wpan_dev)
 308 {
 309         struct net_device *dev = wpan_dev->netdev;
 310         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 311
 312         mutex_lock(&sdata->sec_mtx);
 313 }
 314
 315 static void
 316 ieee802154_unlock_llsec_table(struct wpan_phy *wpan_phy,
 317                               struct wpan_dev *wpan_dev)
 318 {
 319         struct net_device *dev = wpan_dev->netdev;
 320         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 321
 322         mutex_unlock(&sdata->sec_mtx);
 323 }
 324
 325 static int
 326 ieee802154_set_llsec_params(struct wpan_phy *wpan_phy,
 327                             struct wpan_dev *wpan_dev,
 328                             const struct ieee802154_llsec_params *params,
 329                             int changed)
 330 {
 331         struct net_device *dev = wpan_dev->netdev;
 332         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 333         int res;
 334
 335         mutex_lock(&sdata->sec_mtx);
 336         res = mac802154_llsec_set_params(&sdata->sec, params, changed);
 337         mutex_unlock(&sdata->sec_mtx);
 338
 339         return res;
 340 }
 341
 342 static int
 343 ieee802154_get_llsec_params(struct wpan_phy *wpan_phy,
 344                             struct wpan_dev *wpan_dev,
 345                             struct ieee802154_llsec_params *params)
 346 {
 347         struct net_device *dev = wpan_dev->netdev;
 348         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 349         int res;
 350
 351         mutex_lock(&sdata->sec_mtx);
 352         res = mac802154_llsec_get_params(&sdata->sec, params);
 353         mutex_unlock(&sdata->sec_mtx);
 354
 355         return res;
 356 }
 357
 358 static int
 359 ieee802154_add_llsec_key(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 360                          const struct ieee802154_llsec_key_id *id,
 361                          const struct ieee802154_llsec_key *key)
 362 {
 363         struct net_device *dev = wpan_dev->netdev;
 364         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 365         int res;
 366
 367         mutex_lock(&sdata->sec_mtx);
 368         res = mac802154_llsec_key_add(&sdata->sec, id, key);
 369         mutex_unlock(&sdata->sec_mtx);
 370
 371         return res;
 372 }
 373
 374 static int
 375 ieee802154_del_llsec_key(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 376                          const struct ieee802154_llsec_key_id *id)
 377 {
 378         struct net_device *dev = wpan_dev->netdev;
 379         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 380         int res;
 381
 382         mutex_lock(&sdata->sec_mtx);
 383         res = mac802154_llsec_key_del(&sdata->sec, id);
 384         mutex_unlock(&sdata->sec_mtx);
 385
 386         return res;
 387 }
 388
 389 static int
 390 ieee802154_add_seclevel(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 391                         const struct ieee802154_llsec_seclevel *sl)
 392 {
 393         struct net_device *dev = wpan_dev->netdev;
 394         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 395         int res;
 396
 397         mutex_lock(&sdata->sec_mtx);
 398         res = mac802154_llsec_seclevel_add(&sdata->sec, sl);
 399         mutex_unlock(&sdata->sec_mtx);
 400
 401         return res;
 402 }
 403
 404 static int
 405 ieee802154_del_seclevel(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 406                         const struct ieee802154_llsec_seclevel *sl)
 407 {
 408         struct net_device *dev = wpan_dev->netdev;
 409         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 410         int res;
 411
 412         mutex_lock(&sdata->sec_mtx);
 413         res = mac802154_llsec_seclevel_del(&sdata->sec, sl);
 414         mutex_unlock(&sdata->sec_mtx);
 415
 416         return res;
 417 }
 418
 419 static int
 420 ieee802154_add_device(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 421                       const struct ieee802154_llsec_device *dev_desc)
 422 {
 423         struct net_device *dev = wpan_dev->netdev;
 424         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 425         int res;
 426
 427         mutex_lock(&sdata->sec_mtx);
 428         res = mac802154_llsec_dev_add(&sdata->sec, dev_desc);
 429         mutex_unlock(&sdata->sec_mtx);
 430
 431         return res;
 432 }
 433
 434 static int
 435 ieee802154_del_device(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 436                       __le64 extended_addr)
 437 {
 438         struct net_device *dev = wpan_dev->netdev;
 439         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 440         int res;
 441
 442         mutex_lock(&sdata->sec_mtx);
 443         res = mac802154_llsec_dev_del(&sdata->sec, extended_addr);
 444         mutex_unlock(&sdata->sec_mtx);
 445
 446         return res;
 447 }
 448
 449 static int
 450 ieee802154_add_devkey(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 451                       __le64 extended_addr,
 452                       const struct ieee802154_llsec_device_key *key)
 453 {
 454         struct net_device *dev = wpan_dev->netdev;
 455         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 456         int res;
 457
 458         mutex_lock(&sdata->sec_mtx);
 459         res = mac802154_llsec_devkey_add(&sdata->sec, extended_addr, key);
 460         mutex_unlock(&sdata->sec_mtx);
 461
 462         return res;
 463 }
 464
 465 static int
 466 ieee802154_del_devkey(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 467                       __le64 extended_addr,
 468                       const struct ieee802154_llsec_device_key *key)
 469 {
 470         struct net_device *dev = wpan_dev->netdev;
 471         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 472         int res;
 473
 474         mutex_lock(&sdata->sec_mtx);
 475         res = mac802154_llsec_devkey_del(&sdata->sec, extended_addr, key);
 476         mutex_unlock(&sdata->sec_mtx);
 477
 478         return res;
 479 }
 480 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
 481
 482 const struct cfg802154_ops mac802154_config_ops = {
 483         .add_virtual_intf_deprecated = ieee802154_add_iface_deprecated,
 484         .del_virtual_intf_deprecated = ieee802154_del_iface_deprecated,
 485         .suspend = ieee802154_suspend,
 486         .resume = ieee802154_resume,
 487         .add_virtual_intf = ieee802154_add_iface,
 488         .del_virtual_intf = ieee802154_del_iface,
 489         .set_channel = ieee802154_set_channel,
 490         .set_cca_mode = ieee802154_set_cca_mode,
 491         .set_cca_ed_level = ieee802154_set_cca_ed_level,
 492         .set_tx_power = ieee802154_set_tx_power,
 493         .set_pan_id = ieee802154_set_pan_id,
 494         .set_short_addr = ieee802154_set_short_addr,
 495         .set_backoff_exponent = ieee802154_set_backoff_exponent,
 496         .set_max_csma_backoffs = ieee802154_set_max_csma_backoffs,
 497         .set_max_frame_retries = ieee802154_set_max_frame_retries,
 498         .set_lbt_mode = ieee802154_set_lbt_mode,
 499         .set_ackreq_default = ieee802154_set_ackreq_default,
 500         .trigger_scan = mac802154_trigger_scan,
 501         .abort_scan = mac802154_abort_scan,
 502 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
 503         .get_llsec_table = ieee802154_get_llsec_table,
 504         .lock_llsec_table = ieee802154_lock_llsec_table,
 505         .unlock_llsec_table = ieee802154_unlock_llsec_table,
 506         /* TODO above */
 507         .set_llsec_params = ieee802154_set_llsec_params,
 508         .get_llsec_params = ieee802154_get_llsec_params,
 509         .add_llsec_key = ieee802154_add_llsec_key,
 510         .del_llsec_key = ieee802154_del_llsec_key,
 511         .add_seclevel = ieee802154_add_seclevel,
 512         .del_seclevel = ieee802154_del_seclevel,
 513         .add_device = ieee802154_add_device,
 514         .del_device = ieee802154_del_device,
 515         .add_devkey = ieee802154_add_devkey,
 516         .del_devkey = ieee802154_del_devkey,
 517 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
 518 };