net/mac802154/mib.c

   1 /*
   2  * Copyright 2007-2012 Siemens AG
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2
   6  * as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * Written by:
  14  * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
  15  * Sergey Lapin <slapin@ossfans.org>
  16  * Maxim Gorbachyov <maxim.gorbachev@siemens.com>
  17  * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
  18  */
  19
  20 #include <linux/if_arp.h>
  21
  22 #include <net/mac802154.h>
  23 #include <net/ieee802154_netdev.h>
  24 #include <net/cfg802154.h>
  25
  26 #include "ieee802154_i.h"
  27
  28 struct phy_chan_notify_work {
  29         struct work_struct work;
  30         struct net_device *dev;
  31 };
  32
  33 struct hw_addr_filt_notify_work {
  34         struct work_struct work;
  35         struct net_device *dev;
  36         unsigned long changed;
  37 };
  38
  39 static struct mac802154_priv *mac802154_slave_get_priv(struct net_device *dev)
  40 {
  41         struct mac802154_sub_if_data *priv = netdev_priv(dev);
  42
  43         BUG_ON(dev->type != ARPHRD_IEEE802154);
  44
  45         return priv->hw;
  46 }
  47
  48 static void hw_addr_notify(struct work_struct *work)
  49 {
  50         struct hw_addr_filt_notify_work *nw = container_of(work,
  51                         struct hw_addr_filt_notify_work, work);
  52         struct mac802154_priv *hw = mac802154_slave_get_priv(nw->dev);
  53         int res;
  54
  55         res = hw->ops->set_hw_addr_filt(&hw->hw,
  56                                         &hw->hw.hw_filt,
  57                                         nw->changed);
  58         if (res)
  59                 pr_debug("failed changed mask %lx\n", nw->changed);
  60
  61         kfree(nw);
  62 }
  63
  64 static void set_hw_addr_filt(struct net_device *dev, unsigned long changed)
  65 {
  66         struct mac802154_sub_if_data *priv = netdev_priv(dev);
  67         struct hw_addr_filt_notify_work *work;
  68
  69         work = kzalloc(sizeof(*work), GFP_ATOMIC);
  70         if (!work)
  71                 return;
  72
  73         INIT_WORK(&work->work, hw_addr_notify);
  74         work->dev = dev;
  75         work->changed = changed;
  76         queue_work(priv->hw->dev_workqueue, &work->work);
  77 }
  78
  79 void mac802154_dev_set_short_addr(struct net_device *dev, __le16 val)
  80 {
  81         struct mac802154_sub_if_data *priv = netdev_priv(dev);
  82
  83         BUG_ON(dev->type != ARPHRD_IEEE802154);
  84
  85         spin_lock_bh(&priv->mib_lock);
  86         priv->short_addr = val;
  87         spin_unlock_bh(&priv->mib_lock);
  88
  89         if ((priv->hw->ops->set_hw_addr_filt) &&
  90             (priv->hw->hw.hw_filt.short_addr != priv->short_addr)) {
  91                 priv->hw->hw.hw_filt.short_addr = priv->short_addr;
  92                 set_hw_addr_filt(dev, IEEE802154_AFILT_SADDR_CHANGED);
  93         }
  94 }
  95
  96 __le16 mac802154_dev_get_short_addr(const struct net_device *dev)
  97 {
  98         struct mac802154_sub_if_data *priv = netdev_priv(dev);
  99         __le16 ret;
 100
 101         BUG_ON(dev->type != ARPHRD_IEEE802154);
 102
 103         spin_lock_bh(&priv->mib_lock);
 104         ret = priv->short_addr;
 105         spin_unlock_bh(&priv->mib_lock);
 106
 107         return ret;
 108 }
 109
 110 void mac802154_dev_set_ieee_addr(struct net_device *dev)
 111 {
 112         struct mac802154_sub_if_data *priv = netdev_priv(dev);
 113         struct mac802154_priv *mac = priv->hw;
 114
 115         priv->extended_addr = ieee802154_devaddr_from_raw(dev->dev_addr);
 116
 117         if (mac->ops->set_hw_addr_filt &&
 118             mac->hw.hw_filt.ieee_addr != priv->extended_addr) {
 119                 mac->hw.hw_filt.ieee_addr = priv->extended_addr;
 120                 set_hw_addr_filt(dev, IEEE802154_AFILT_IEEEADDR_CHANGED);
 121         }
 122 }
 123
 124 __le16 mac802154_dev_get_pan_id(const struct net_device *dev)
 125 {
 126         struct mac802154_sub_if_data *priv = netdev_priv(dev);
 127         __le16 ret;
 128
 129         BUG_ON(dev->type != ARPHRD_IEEE802154);
 130
 131         spin_lock_bh(&priv->mib_lock);
 132         ret = priv->pan_id;
 133         spin_unlock_bh(&priv->mib_lock);
 134
 135         return ret;
 136 }
 137
 138 void mac802154_dev_set_pan_id(struct net_device *dev, __le16 val)
 139 {
 140         struct mac802154_sub_if_data *priv = netdev_priv(dev);
 141
 142         BUG_ON(dev->type != ARPHRD_IEEE802154);
 143
 144         spin_lock_bh(&priv->mib_lock);
 145         priv->pan_id = val;
 146         spin_unlock_bh(&priv->mib_lock);
 147
 148         if ((priv->hw->ops->set_hw_addr_filt) &&
 149             (priv->hw->hw.hw_filt.pan_id != priv->pan_id)) {
 150                 priv->hw->hw.hw_filt.pan_id = priv->pan_id;
 151                 set_hw_addr_filt(dev, IEEE802154_AFILT_PANID_CHANGED);
 152         }
 153 }
 154
 155 u8 mac802154_dev_get_dsn(const struct net_device *dev)
 156 {
 157         struct mac802154_sub_if_data *priv = netdev_priv(dev);
 158
 159         BUG_ON(dev->type != ARPHRD_IEEE802154);
 160
 161         return priv->dsn++;
 162 }
 163
 164 static void phy_chan_notify(struct work_struct *work)
 165 {
 166         struct phy_chan_notify_work *nw = container_of(work,
 167                                           struct phy_chan_notify_work, work);
 168         struct mac802154_priv *hw = mac802154_slave_get_priv(nw->dev);
 169         struct mac802154_sub_if_data *priv = netdev_priv(nw->dev);
 170         int res;
 171
 172         mutex_lock(&priv->hw->phy->pib_lock);
 173         res = hw->ops->set_channel(&hw->hw, priv->page, priv->chan);
 174         if (res) {
 175                 pr_debug("set_channel failed\n");
 176         } else {
 177                 priv->hw->phy->current_channel = priv->chan;
 178                 priv->hw->phy->current_page = priv->page;
 179         }
 180         mutex_unlock(&priv->hw->phy->pib_lock);
 181
 182         kfree(nw);
 183 }
 184
 185 void mac802154_dev_set_page_channel(struct net_device *dev, u8 page, u8 chan)
 186 {
 187         struct mac802154_sub_if_data *priv = netdev_priv(dev);
 188         struct phy_chan_notify_work *work;
 189
 190         BUG_ON(dev->type != ARPHRD_IEEE802154);
 191
 192         spin_lock_bh(&priv->mib_lock);
 193         priv->page = page;
 194         priv->chan = chan;
 195         spin_unlock_bh(&priv->mib_lock);
 196
 197         mutex_lock(&priv->hw->phy->pib_lock);
 198         if (priv->hw->phy->current_channel != priv->chan ||
 199             priv->hw->phy->current_page != priv->page) {
 200                 mutex_unlock(&priv->hw->phy->pib_lock);
 201
 202                 work = kzalloc(sizeof(*work), GFP_ATOMIC);
 203                 if (!work)
 204                         return;
 205
 206                 INIT_WORK(&work->work, phy_chan_notify);
 207                 work->dev = dev;
 208                 queue_work(priv->hw->dev_workqueue, &work->work);
 209         } else {
 210                 mutex_unlock(&priv->hw->phy->pib_lock);
 211         }
 212 }
 213
 214
 215 int mac802154_get_params(struct net_device *dev,
 216                          struct ieee802154_llsec_params *params)
 217 {
 218         struct mac802154_sub_if_data *priv = netdev_priv(dev);
 219         int res;
 220
 221         BUG_ON(dev->type != ARPHRD_IEEE802154);
 222
 223         mutex_lock(&priv->sec_mtx);
 224         res = mac802154_llsec_get_params(&priv->sec, params);
 225         mutex_unlock(&priv->sec_mtx);
 226
 227         return res;
 228 }
 229
 230 int mac802154_set_params(struct net_device *dev,
 231                          const struct ieee802154_llsec_params *params,
 232                          int changed)
 233 {
 234         struct mac802154_sub_if_data *priv = netdev_priv(dev);
 235         int res;
 236
 237         BUG_ON(dev->type != ARPHRD_IEEE802154);
 238
 239         mutex_lock(&priv->sec_mtx);
 240         res = mac802154_llsec_set_params(&priv->sec, params, changed);
 241         mutex_unlock(&priv->sec_mtx);
 242
 243         return res;
 244 }
 245
 246
 247 int mac802154_add_key(struct net_device *dev,
 248                       const struct ieee802154_llsec_key_id *id,
 249                       const struct ieee802154_llsec_key *key)
 250 {
 251         struct mac802154_sub_if_data *priv = netdev_priv(dev);
 252         int res;
 253
 254         BUG_ON(dev->type != ARPHRD_IEEE802154);
 255
 256         mutex_lock(&priv->sec_mtx);
 257         res = mac802154_llsec_key_add(&priv->sec, id, key);
 258         mutex_unlock(&priv->sec_mtx);
 259
 260         return res;
 261 }
 262
 263 int mac802154_del_key(struct net_device *dev,
 264                       const struct ieee802154_llsec_key_id *id)
 265 {
 266         struct mac802154_sub_if_data *priv = netdev_priv(dev);
 267         int res;
 268
 269         BUG_ON(dev->type != ARPHRD_IEEE802154);
 270
 271         mutex_lock(&priv->sec_mtx);
 272         res = mac802154_llsec_key_del(&priv->sec, id);
 273         mutex_unlock(&priv->sec_mtx);
 274
 275         return res;
 276 }
 277
 278
 279 int mac802154_add_dev(struct net_device *dev,
 280                       const struct ieee802154_llsec_device *llsec_dev)
 281 {
 282         struct mac802154_sub_if_data *priv = netdev_priv(dev);
 283         int res;
 284
 285         BUG_ON(dev->type != ARPHRD_IEEE802154);
 286
 287         mutex_lock(&priv->sec_mtx);
 288         res = mac802154_llsec_dev_add(&priv->sec, llsec_dev);
 289         mutex_unlock(&priv->sec_mtx);
 290
 291         return res;
 292 }
 293
 294 int mac802154_del_dev(struct net_device *dev, __le64 dev_addr)
 295 {
 296         struct mac802154_sub_if_data *priv = netdev_priv(dev);
 297         int res;
 298
 299         BUG_ON(dev->type != ARPHRD_IEEE802154);
 300
 301         mutex_lock(&priv->sec_mtx);
 302         res = mac802154_llsec_dev_del(&priv->sec, dev_addr);
 303         mutex_unlock(&priv->sec_mtx);
 304
 305         return res;
 306 }
 307
 308
 309 int mac802154_add_devkey(struct net_device *dev,
 310                          __le64 device_addr,
 311                          const struct ieee802154_llsec_device_key *key)
 312 {
 313         struct mac802154_sub_if_data *priv = netdev_priv(dev);
 314         int res;
 315
 316         BUG_ON(dev->type != ARPHRD_IEEE802154);
 317
 318         mutex_lock(&priv->sec_mtx);
 319         res = mac802154_llsec_devkey_add(&priv->sec, device_addr, key);
 320         mutex_unlock(&priv->sec_mtx);
 321
 322         return res;
 323 }
 324
 325 int mac802154_del_devkey(struct net_device *dev,
 326                          __le64 device_addr,
 327                          const struct ieee802154_llsec_device_key *key)
 328 {
 329         struct mac802154_sub_if_data *priv = netdev_priv(dev);
 330         int res;
 331
 332         BUG_ON(dev->type != ARPHRD_IEEE802154);
 333
 334         mutex_lock(&priv->sec_mtx);
 335         res = mac802154_llsec_devkey_del(&priv->sec, device_addr, key);
 336         mutex_unlock(&priv->sec_mtx);
 337
 338         return res;
 339 }
 340
 341
 342 int mac802154_add_seclevel(struct net_device *dev,
 343                            const struct ieee802154_llsec_seclevel *sl)
 344 {
 345         struct mac802154_sub_if_data *priv = netdev_priv(dev);
 346         int res;
 347
 348         BUG_ON(dev->type != ARPHRD_IEEE802154);
 349
 350         mutex_lock(&priv->sec_mtx);
 351         res = mac802154_llsec_seclevel_add(&priv->sec, sl);
 352         mutex_unlock(&priv->sec_mtx);
 353
 354         return res;
 355 }
 356
 357 int mac802154_del_seclevel(struct net_device *dev,
 358                            const struct ieee802154_llsec_seclevel *sl)
 359 {
 360         struct mac802154_sub_if_data *priv = netdev_priv(dev);
 361         int res;
 362
 363         BUG_ON(dev->type != ARPHRD_IEEE802154);
 364
 365         mutex_lock(&priv->sec_mtx);
 366         res = mac802154_llsec_seclevel_del(&priv->sec, sl);
 367         mutex_unlock(&priv->sec_mtx);
 368
 369         return res;
 370 }
 371
 372
 373 void mac802154_lock_table(struct net_device *dev)
 374 {
 375         struct mac802154_sub_if_data *priv = netdev_priv(dev);
 376
 377         BUG_ON(dev->type != ARPHRD_IEEE802154);
 378
 379         mutex_lock(&priv->sec_mtx);
 380 }
 381
 382 void mac802154_get_table(struct net_device *dev,
 383                          struct ieee802154_llsec_table **t)
 384 {
 385         struct mac802154_sub_if_data *priv = netdev_priv(dev);
 386
 387         BUG_ON(dev->type != ARPHRD_IEEE802154);
 388
 389         *t = &priv->sec.table;
 390 }
 391
 392 void mac802154_unlock_table(struct net_device *dev)
 393 {
 394         struct mac802154_sub_if_data *priv = netdev_priv(dev);
 395
 396         BUG_ON(dev->type != ARPHRD_IEEE802154);
 397
 398         mutex_unlock(&priv->sec_mtx);
 399 }