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_stop_queue(&local->hw);
  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);
  71         if (ret)
  72                 return ret;
  73
  74 wake_up:
  75         ieee802154_wake_queue(&local->hw);
  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         ret = drv_set_channel(local, page, channel);
 118         if (!ret) {
 119                 wpan_phy->current_page = page;
 120                 wpan_phy->current_channel = channel;
 121                 ieee802154_configure_durations(wpan_phy);
 122         }
 123
 124         return ret;
 125 }
 126
 127 static int
 128 ieee802154_set_cca_mode(struct wpan_phy *wpan_phy,
 129                         const struct wpan_phy_cca *cca)
 130 {
 131         struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
 132         int ret;
 133
 134         ASSERT_RTNL();
 135
 136         if (wpan_phy_cca_cmp(&wpan_phy->cca, cca))
 137                 return 0;
 138
 139         ret = drv_set_cca_mode(local, cca);
 140         if (!ret)
 141                 wpan_phy->cca = *cca;
 142
 143         return ret;
 144 }
 145
 146 static int
 147 ieee802154_set_cca_ed_level(struct wpan_phy *wpan_phy, s32 ed_level)
 148 {
 149         struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
 150         int ret;
 151
 152         ASSERT_RTNL();
 153
 154         if (wpan_phy->cca_ed_level == ed_level)
 155                 return 0;
 156
 157         ret = drv_set_cca_ed_level(local, ed_level);
 158         if (!ret)
 159                 wpan_phy->cca_ed_level = ed_level;
 160
 161         return ret;
 162 }
 163
 164 static int
 165 ieee802154_set_tx_power(struct wpan_phy *wpan_phy, s32 power)
 166 {
 167         struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
 168         int ret;
 169
 170         ASSERT_RTNL();
 171
 172         if (wpan_phy->transmit_power == power)
 173                 return 0;
 174
 175         ret = drv_set_tx_power(local, power);
 176         if (!ret)
 177                 wpan_phy->transmit_power = power;
 178
 179         return ret;
 180 }
 181
 182 static int
 183 ieee802154_set_pan_id(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 184                       __le16 pan_id)
 185 {
 186         int ret;
 187
 188         ASSERT_RTNL();
 189
 190         if (wpan_dev->pan_id == pan_id)
 191                 return 0;
 192
 193         ret = mac802154_wpan_update_llsec(wpan_dev->netdev);
 194         if (!ret)
 195                 wpan_dev->pan_id = pan_id;
 196
 197         return ret;
 198 }
 199
 200 static int
 201 ieee802154_set_backoff_exponent(struct wpan_phy *wpan_phy,
 202                                 struct wpan_dev *wpan_dev,
 203                                 u8 min_be, u8 max_be)
 204 {
 205         ASSERT_RTNL();
 206
 207         wpan_dev->min_be = min_be;
 208         wpan_dev->max_be = max_be;
 209         return 0;
 210 }
 211
 212 static int
 213 ieee802154_set_short_addr(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 214                           __le16 short_addr)
 215 {
 216         ASSERT_RTNL();
 217
 218         wpan_dev->short_addr = short_addr;
 219         return 0;
 220 }
 221
 222 static int
 223 ieee802154_set_max_csma_backoffs(struct wpan_phy *wpan_phy,
 224                                  struct wpan_dev *wpan_dev,
 225                                  u8 max_csma_backoffs)
 226 {
 227         ASSERT_RTNL();
 228
 229         wpan_dev->csma_retries = max_csma_backoffs;
 230         return 0;
 231 }
 232
 233 static int
 234 ieee802154_set_max_frame_retries(struct wpan_phy *wpan_phy,
 235                                  struct wpan_dev *wpan_dev,
 236                                  s8 max_frame_retries)
 237 {
 238         ASSERT_RTNL();
 239
 240         wpan_dev->frame_retries = max_frame_retries;
 241         return 0;
 242 }
 243
 244 static int
 245 ieee802154_set_lbt_mode(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 246                         bool mode)
 247 {
 248         ASSERT_RTNL();
 249
 250         wpan_dev->lbt = mode;
 251         return 0;
 252 }
 253
 254 static int
 255 ieee802154_set_ackreq_default(struct wpan_phy *wpan_phy,
 256                               struct wpan_dev *wpan_dev, bool ackreq)
 257 {
 258         ASSERT_RTNL();
 259
 260         wpan_dev->ackreq = ackreq;
 261         return 0;
 262 }
 263
 264 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
 265 static void
 266 ieee802154_get_llsec_table(struct wpan_phy *wpan_phy,
 267                            struct wpan_dev *wpan_dev,
 268                            struct ieee802154_llsec_table **table)
 269 {
 270         struct net_device *dev = wpan_dev->netdev;
 271         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 272
 273         *table = &sdata->sec.table;
 274 }
 275
 276 static void
 277 ieee802154_lock_llsec_table(struct wpan_phy *wpan_phy,
 278                             struct wpan_dev *wpan_dev)
 279 {
 280         struct net_device *dev = wpan_dev->netdev;
 281         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 282
 283         mutex_lock(&sdata->sec_mtx);
 284 }
 285
 286 static void
 287 ieee802154_unlock_llsec_table(struct wpan_phy *wpan_phy,
 288                               struct wpan_dev *wpan_dev)
 289 {
 290         struct net_device *dev = wpan_dev->netdev;
 291         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 292
 293         mutex_unlock(&sdata->sec_mtx);
 294 }
 295
 296 static int
 297 ieee802154_set_llsec_params(struct wpan_phy *wpan_phy,
 298                             struct wpan_dev *wpan_dev,
 299                             const struct ieee802154_llsec_params *params,
 300                             int changed)
 301 {
 302         struct net_device *dev = wpan_dev->netdev;
 303         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 304         int res;
 305
 306         mutex_lock(&sdata->sec_mtx);
 307         res = mac802154_llsec_set_params(&sdata->sec, params, changed);
 308         mutex_unlock(&sdata->sec_mtx);
 309
 310         return res;
 311 }
 312
 313 static int
 314 ieee802154_get_llsec_params(struct wpan_phy *wpan_phy,
 315                             struct wpan_dev *wpan_dev,
 316                             struct ieee802154_llsec_params *params)
 317 {
 318         struct net_device *dev = wpan_dev->netdev;
 319         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 320         int res;
 321
 322         mutex_lock(&sdata->sec_mtx);
 323         res = mac802154_llsec_get_params(&sdata->sec, params);
 324         mutex_unlock(&sdata->sec_mtx);
 325
 326         return res;
 327 }
 328
 329 static int
 330 ieee802154_add_llsec_key(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 331                          const struct ieee802154_llsec_key_id *id,
 332                          const struct ieee802154_llsec_key *key)
 333 {
 334         struct net_device *dev = wpan_dev->netdev;
 335         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 336         int res;
 337
 338         mutex_lock(&sdata->sec_mtx);
 339         res = mac802154_llsec_key_add(&sdata->sec, id, key);
 340         mutex_unlock(&sdata->sec_mtx);
 341
 342         return res;
 343 }
 344
 345 static int
 346 ieee802154_del_llsec_key(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 347                          const struct ieee802154_llsec_key_id *id)
 348 {
 349         struct net_device *dev = wpan_dev->netdev;
 350         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 351         int res;
 352
 353         mutex_lock(&sdata->sec_mtx);
 354         res = mac802154_llsec_key_del(&sdata->sec, id);
 355         mutex_unlock(&sdata->sec_mtx);
 356
 357         return res;
 358 }
 359
 360 static int
 361 ieee802154_add_seclevel(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 362                         const struct ieee802154_llsec_seclevel *sl)
 363 {
 364         struct net_device *dev = wpan_dev->netdev;
 365         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 366         int res;
 367
 368         mutex_lock(&sdata->sec_mtx);
 369         res = mac802154_llsec_seclevel_add(&sdata->sec, sl);
 370         mutex_unlock(&sdata->sec_mtx);
 371
 372         return res;
 373 }
 374
 375 static int
 376 ieee802154_del_seclevel(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 377                         const struct ieee802154_llsec_seclevel *sl)
 378 {
 379         struct net_device *dev = wpan_dev->netdev;
 380         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 381         int res;
 382
 383         mutex_lock(&sdata->sec_mtx);
 384         res = mac802154_llsec_seclevel_del(&sdata->sec, sl);
 385         mutex_unlock(&sdata->sec_mtx);
 386
 387         return res;
 388 }
 389
 390 static int
 391 ieee802154_add_device(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 392                       const struct ieee802154_llsec_device *dev_desc)
 393 {
 394         struct net_device *dev = wpan_dev->netdev;
 395         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 396         int res;
 397
 398         mutex_lock(&sdata->sec_mtx);
 399         res = mac802154_llsec_dev_add(&sdata->sec, dev_desc);
 400         mutex_unlock(&sdata->sec_mtx);
 401
 402         return res;
 403 }
 404
 405 static int
 406 ieee802154_del_device(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 407                       __le64 extended_addr)
 408 {
 409         struct net_device *dev = wpan_dev->netdev;
 410         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 411         int res;
 412
 413         mutex_lock(&sdata->sec_mtx);
 414         res = mac802154_llsec_dev_del(&sdata->sec, extended_addr);
 415         mutex_unlock(&sdata->sec_mtx);
 416
 417         return res;
 418 }
 419
 420 static int
 421 ieee802154_add_devkey(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 422                       __le64 extended_addr,
 423                       const struct ieee802154_llsec_device_key *key)
 424 {
 425         struct net_device *dev = wpan_dev->netdev;
 426         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 427         int res;
 428
 429         mutex_lock(&sdata->sec_mtx);
 430         res = mac802154_llsec_devkey_add(&sdata->sec, extended_addr, key);
 431         mutex_unlock(&sdata->sec_mtx);
 432
 433         return res;
 434 }
 435
 436 static int
 437 ieee802154_del_devkey(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 438                       __le64 extended_addr,
 439                       const struct ieee802154_llsec_device_key *key)
 440 {
 441         struct net_device *dev = wpan_dev->netdev;
 442         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 443         int res;
 444
 445         mutex_lock(&sdata->sec_mtx);
 446         res = mac802154_llsec_devkey_del(&sdata->sec, extended_addr, key);
 447         mutex_unlock(&sdata->sec_mtx);
 448
 449         return res;
 450 }
 451 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
 452
 453 const struct cfg802154_ops mac802154_config_ops = {
 454         .add_virtual_intf_deprecated = ieee802154_add_iface_deprecated,
 455         .del_virtual_intf_deprecated = ieee802154_del_iface_deprecated,
 456         .suspend = ieee802154_suspend,
 457         .resume = ieee802154_resume,
 458         .add_virtual_intf = ieee802154_add_iface,
 459         .del_virtual_intf = ieee802154_del_iface,
 460         .set_channel = ieee802154_set_channel,
 461         .set_cca_mode = ieee802154_set_cca_mode,
 462         .set_cca_ed_level = ieee802154_set_cca_ed_level,
 463         .set_tx_power = ieee802154_set_tx_power,
 464         .set_pan_id = ieee802154_set_pan_id,
 465         .set_short_addr = ieee802154_set_short_addr,
 466         .set_backoff_exponent = ieee802154_set_backoff_exponent,
 467         .set_max_csma_backoffs = ieee802154_set_max_csma_backoffs,
 468         .set_max_frame_retries = ieee802154_set_max_frame_retries,
 469         .set_lbt_mode = ieee802154_set_lbt_mode,
 470         .set_ackreq_default = ieee802154_set_ackreq_default,
 471 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
 472         .get_llsec_table = ieee802154_get_llsec_table,
 473         .lock_llsec_table = ieee802154_lock_llsec_table,
 474         .unlock_llsec_table = ieee802154_unlock_llsec_table,
 475         /* TODO above */
 476         .set_llsec_params = ieee802154_set_llsec_params,
 477         .get_llsec_params = ieee802154_get_llsec_params,
 478         .add_llsec_key = ieee802154_add_llsec_key,
 479         .del_llsec_key = ieee802154_del_llsec_key,
 480         .add_seclevel = ieee802154_add_seclevel,
 481         .del_seclevel = ieee802154_del_seclevel,
 482         .add_device = ieee802154_add_device,
 483         .del_device = ieee802154_del_device,
 484         .add_devkey = ieee802154_add_devkey,
 485         .del_devkey = ieee802154_del_devkey,
 486 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
 487 };