net/ieee802154/nl802154.c

   1 /* This program is free software; you can redistribute it and/or modify
   2  * it under the terms of the GNU General Public License version 2
   3  * as published by the Free Software Foundation.
   4  *
   5  * This program is distributed in the hope that it will be useful,
   6  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   7  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   8  * GNU General Public License for more details.
   9  *
  10  * Authors:
  11  * Alexander Aring <aar@pengutronix.de>
  12  *
  13  * Based on: net/wireless/nl80211.c
  14  */
  15
  16 #include <linux/rtnetlink.h>
  17
  18 #include <net/cfg802154.h>
  19 #include <net/genetlink.h>
  20 #include <net/mac802154.h>
  21 #include <net/netlink.h>
  22 #include <net/nl802154.h>
  23 #include <net/sock.h>
  24
  25 #include "nl802154.h"
  26 #include "rdev-ops.h"
  27 #include "core.h"
  28
  29 static int nl802154_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
  30                              struct genl_info *info);
  31
  32 static void nl802154_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
  33                                struct genl_info *info);
  34
  35 /* the netlink family */
  36 static struct genl_family nl802154_fam = {
  37         .id = GENL_ID_GENERATE,         /* don't bother with a hardcoded ID */
  38         .name = NL802154_GENL_NAME,     /* have users key off the name instead */
  39         .hdrsize = 0,                   /* no private header */
  40         .version = 1,                   /* no particular meaning now */
  41         .maxattr = NL802154_ATTR_MAX,
  42         .netnsok = true,
  43         .pre_doit = nl802154_pre_doit,
  44         .post_doit = nl802154_post_doit,
  45 };
  46
  47 /* multicast groups */
  48 enum nl802154_multicast_groups {
  49         NL802154_MCGRP_CONFIG,
  50 };
  51
  52 static const struct genl_multicast_group nl802154_mcgrps[] = {
  53         [NL802154_MCGRP_CONFIG] = { .name = "config", },
  54 };
  55
  56 /* returns ERR_PTR values */
  57 static struct wpan_dev *
  58 __cfg802154_wpan_dev_from_attrs(struct net *netns, struct nlattr **attrs)
  59 {
  60         struct cfg802154_registered_device *rdev;
  61         struct wpan_dev *result = NULL;
  62         bool have_ifidx = attrs[NL802154_ATTR_IFINDEX];
  63         bool have_wpan_dev_id = attrs[NL802154_ATTR_WPAN_DEV];
  64         u64 wpan_dev_id;
  65         int wpan_phy_idx = -1;
  66         int ifidx = -1;
  67
  68         ASSERT_RTNL();
  69
  70         if (!have_ifidx && !have_wpan_dev_id)
  71                 return ERR_PTR(-EINVAL);
  72
  73         if (have_ifidx)
  74                 ifidx = nla_get_u32(attrs[NL802154_ATTR_IFINDEX]);
  75         if (have_wpan_dev_id) {
  76                 wpan_dev_id = nla_get_u64(attrs[NL802154_ATTR_WPAN_DEV]);
  77                 wpan_phy_idx = wpan_dev_id >> 32;
  78         }
  79
  80         list_for_each_entry(rdev, &cfg802154_rdev_list, list) {
  81                 struct wpan_dev *wpan_dev;
  82
  83                 /* TODO netns compare */
  84
  85                 if (have_wpan_dev_id && rdev->wpan_phy_idx != wpan_phy_idx)
  86                         continue;
  87
  88                 list_for_each_entry(wpan_dev, &rdev->wpan_dev_list, list) {
  89                         if (have_ifidx && wpan_dev->netdev &&
  90                             wpan_dev->netdev->ifindex == ifidx) {
  91                                 result = wpan_dev;
  92                                 break;
  93                         }
  94                         if (have_wpan_dev_id &&
  95                             wpan_dev->identifier == (u32)wpan_dev_id) {
  96                                 result = wpan_dev;
  97                                 break;
  98                         }
  99                 }
 100
 101                 if (result)
 102                         break;
 103         }
 104
 105         if (result)
 106                 return result;
 107
 108         return ERR_PTR(-ENODEV);
 109 }
 110
 111 static struct cfg802154_registered_device *
 112 __cfg802154_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 113 {
 114         struct cfg802154_registered_device *rdev = NULL, *tmp;
 115         struct net_device *netdev;
 116
 117         ASSERT_RTNL();
 118
 119         if (!attrs[NL802154_ATTR_WPAN_PHY] &&
 120             !attrs[NL802154_ATTR_IFINDEX] &&
 121             !attrs[NL802154_ATTR_WPAN_DEV])
 122                 return ERR_PTR(-EINVAL);
 123
 124         if (attrs[NL802154_ATTR_WPAN_PHY])
 125                 rdev = cfg802154_rdev_by_wpan_phy_idx(
 126                                 nla_get_u32(attrs[NL802154_ATTR_WPAN_PHY]));
 127
 128         if (attrs[NL802154_ATTR_WPAN_DEV]) {
 129                 u64 wpan_dev_id = nla_get_u64(attrs[NL802154_ATTR_WPAN_DEV]);
 130                 struct wpan_dev *wpan_dev;
 131                 bool found = false;
 132
 133                 tmp = cfg802154_rdev_by_wpan_phy_idx(wpan_dev_id >> 32);
 134                 if (tmp) {
 135                         /* make sure wpan_dev exists */
 136                         list_for_each_entry(wpan_dev, &tmp->wpan_dev_list, list) {
 137                                 if (wpan_dev->identifier != (u32)wpan_dev_id)
 138                                         continue;
 139                                 found = true;
 140                                 break;
 141                         }
 142
 143                         if (!found)
 144                                 tmp = NULL;
 145
 146                         if (rdev && tmp != rdev)
 147                                 return ERR_PTR(-EINVAL);
 148                         rdev = tmp;
 149                 }
 150         }
 151
 152         if (attrs[NL802154_ATTR_IFINDEX]) {
 153                 int ifindex = nla_get_u32(attrs[NL802154_ATTR_IFINDEX]);
 154
 155                 netdev = __dev_get_by_index(netns, ifindex);
 156                 if (netdev) {
 157                         if (netdev->ieee802154_ptr)
 158                                 tmp = wpan_phy_to_rdev(
 159                                                 netdev->ieee802154_ptr->wpan_phy);
 160                         else
 161                                 tmp = NULL;
 162
 163                         /* not wireless device -- return error */
 164                         if (!tmp)
 165                                 return ERR_PTR(-EINVAL);
 166
 167                         /* mismatch -- return error */
 168                         if (rdev && tmp != rdev)
 169                                 return ERR_PTR(-EINVAL);
 170
 171                         rdev = tmp;
 172                 }
 173         }
 174
 175         if (!rdev)
 176                 return ERR_PTR(-ENODEV);
 177
 178         /* TODO netns compare */
 179
 180         return rdev;
 181 }
 182
 183 /* This function returns a pointer to the driver
 184  * that the genl_info item that is passed refers to.
 185  *
 186  * The result of this can be a PTR_ERR and hence must
 187  * be checked with IS_ERR() for errors.
 188  */
 189 static struct cfg802154_registered_device *
 190 cfg802154_get_dev_from_info(struct net *netns, struct genl_info *info)
 191 {
 192         return __cfg802154_rdev_from_attrs(netns, info->attrs);
 193 }
 194
 195 /* policy for the attributes */
 196 static const struct nla_policy nl802154_policy[NL802154_ATTR_MAX+1] = {
 197         [NL802154_ATTR_WPAN_PHY] = { .type = NLA_U32 },
 198         [NL802154_ATTR_WPAN_PHY_NAME] = { .type = NLA_NUL_STRING,
 199                                           .len = 20-1 },
 200
 201         [NL802154_ATTR_IFINDEX] = { .type = NLA_U32 },
 202         [NL802154_ATTR_IFTYPE] = { .type = NLA_U32 },
 203         [NL802154_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 204
 205         [NL802154_ATTR_WPAN_DEV] = { .type = NLA_U64 },
 206
 207         [NL802154_ATTR_PAGE] = { .type = NLA_U8, },
 208         [NL802154_ATTR_CHANNEL] = { .type = NLA_U8, },
 209
 210         [NL802154_ATTR_TX_POWER] = { .type = NLA_S32, },
 211
 212         [NL802154_ATTR_CCA_MODE] = { .type = NLA_U32, },
 213         [NL802154_ATTR_CCA_OPT] = { .type = NLA_U32, },
 214         [NL802154_ATTR_CCA_ED_LEVEL] = { .type = NLA_S32, },
 215
 216         [NL802154_ATTR_SUPPORTED_CHANNEL] = { .type = NLA_U32, },
 217
 218         [NL802154_ATTR_PAN_ID] = { .type = NLA_U16, },
 219         [NL802154_ATTR_EXTENDED_ADDR] = { .type = NLA_U64 },
 220         [NL802154_ATTR_SHORT_ADDR] = { .type = NLA_U16, },
 221
 222         [NL802154_ATTR_MIN_BE] = { .type = NLA_U8, },
 223         [NL802154_ATTR_MAX_BE] = { .type = NLA_U8, },
 224         [NL802154_ATTR_MAX_CSMA_BACKOFFS] = { .type = NLA_U8, },
 225
 226         [NL802154_ATTR_MAX_FRAME_RETRIES] = { .type = NLA_S8, },
 227
 228         [NL802154_ATTR_LBT_MODE] = { .type = NLA_U8, },
 229
 230         [NL802154_ATTR_WPAN_PHY_CAPS] = { .type = NLA_NESTED },
 231
 232         [NL802154_ATTR_SUPPORTED_COMMANDS] = { .type = NLA_NESTED },
 233 };
 234
 235 /* message building helper */
 236 static inline void *nl802154hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 237                                     int flags, u8 cmd)
 238 {
 239         /* since there is no private header just add the generic one */
 240         return genlmsg_put(skb, portid, seq, &nl802154_fam, flags, cmd);
 241 }
 242
 243 static int
 244 nl802154_put_flags(struct sk_buff *msg, int attr, u32 mask)
 245 {
 246         struct nlattr *nl_flags = nla_nest_start(msg, attr);
 247         int i;
 248
 249         if (!nl_flags)
 250                 return -ENOBUFS;
 251
 252         i = 0;
 253         while (mask) {
 254                 if ((mask & 1) && nla_put_flag(msg, i))
 255                         return -ENOBUFS;
 256
 257                 mask >>= 1;
 258                 i++;
 259         }
 260
 261         nla_nest_end(msg, nl_flags);
 262         return 0;
 263 }
 264
 265 static int
 266 nl802154_send_wpan_phy_channels(struct cfg802154_registered_device *rdev,
 267                                 struct sk_buff *msg)
 268 {
 269         struct nlattr *nl_page;
 270         unsigned long page;
 271
 272         nl_page = nla_nest_start(msg, NL802154_ATTR_CHANNELS_SUPPORTED);
 273         if (!nl_page)
 274                 return -ENOBUFS;
 275
 276         for (page = 0; page <= IEEE802154_MAX_PAGE; page++) {
 277                 if (nla_put_u32(msg, NL802154_ATTR_SUPPORTED_CHANNEL,
 278                                 rdev->wpan_phy.supported.channels[page]))
 279                         return -ENOBUFS;
 280         }
 281         nla_nest_end(msg, nl_page);
 282
 283         return 0;
 284 }
 285
 286 static int
 287 nl802154_put_capabilities(struct sk_buff *msg,
 288                           struct cfg802154_registered_device *rdev)
 289 {
 290         const struct wpan_phy_supported *caps = &rdev->wpan_phy.supported;
 291         struct nlattr *nl_caps, *nl_channels;
 292         int i;
 293
 294         nl_caps = nla_nest_start(msg, NL802154_ATTR_WPAN_PHY_CAPS);
 295         if (!nl_caps)
 296                 return -ENOBUFS;
 297
 298         nl_channels = nla_nest_start(msg, NL802154_CAP_ATTR_CHANNELS);
 299         if (!nl_channels)
 300                 return -ENOBUFS;
 301
 302         for (i = 0; i <= IEEE802154_MAX_PAGE; i++) {
 303                 if (caps->channels[i]) {
 304                         if (nl802154_put_flags(msg, i, caps->channels[i]))
 305                                 return -ENOBUFS;
 306                 }
 307         }
 308
 309         nla_nest_end(msg, nl_channels);
 310
 311         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL) {
 312                 struct nlattr *nl_ed_lvls;
 313
 314                 nl_ed_lvls = nla_nest_start(msg,
 315                                             NL802154_CAP_ATTR_CCA_ED_LEVELS);
 316                 if (!nl_ed_lvls)
 317                         return -ENOBUFS;
 318
 319                 for (i = 0; i < caps->cca_ed_levels_size; i++) {
 320                         if (nla_put_s32(msg, i, caps->cca_ed_levels[i]))
 321                                 return -ENOBUFS;
 322                 }
 323
 324                 nla_nest_end(msg, nl_ed_lvls);
 325         }
 326
 327         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER) {
 328                 struct nlattr *nl_tx_pwrs;
 329
 330                 nl_tx_pwrs = nla_nest_start(msg, NL802154_CAP_ATTR_TX_POWERS);
 331                 if (!nl_tx_pwrs)
 332                         return -ENOBUFS;
 333
 334                 for (i = 0; i < caps->tx_powers_size; i++) {
 335                         if (nla_put_s32(msg, i, caps->tx_powers[i]))
 336                                 return -ENOBUFS;
 337                 }
 338
 339                 nla_nest_end(msg, nl_tx_pwrs);
 340         }
 341
 342         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE) {
 343                 if (nl802154_put_flags(msg, NL802154_CAP_ATTR_CCA_MODES,
 344                                        caps->cca_modes) ||
 345                     nl802154_put_flags(msg, NL802154_CAP_ATTR_CCA_OPTS,
 346                                        caps->cca_opts))
 347                         return -ENOBUFS;
 348         }
 349
 350         if (nla_put_u8(msg, NL802154_CAP_ATTR_MIN_MINBE, caps->min_minbe) ||
 351             nla_put_u8(msg, NL802154_CAP_ATTR_MAX_MINBE, caps->max_minbe) ||
 352             nla_put_u8(msg, NL802154_CAP_ATTR_MIN_MAXBE, caps->min_maxbe) ||
 353             nla_put_u8(msg, NL802154_CAP_ATTR_MAX_MAXBE, caps->max_maxbe) ||
 354             nla_put_u8(msg, NL802154_CAP_ATTR_MIN_CSMA_BACKOFFS,
 355                        caps->min_csma_backoffs) ||
 356             nla_put_u8(msg, NL802154_CAP_ATTR_MAX_CSMA_BACKOFFS,
 357                        caps->max_csma_backoffs) ||
 358             nla_put_s8(msg, NL802154_CAP_ATTR_MIN_FRAME_RETRIES,
 359                        caps->min_frame_retries) ||
 360             nla_put_s8(msg, NL802154_CAP_ATTR_MAX_FRAME_RETRIES,
 361                        caps->max_frame_retries) ||
 362             nl802154_put_flags(msg, NL802154_CAP_ATTR_IFTYPES,
 363                                caps->iftypes) ||
 364             nla_put_u32(msg, NL802154_CAP_ATTR_LBT, caps->lbt))
 365                 return -ENOBUFS;
 366
 367         nla_nest_end(msg, nl_caps);
 368
 369         return 0;
 370 }
 371
 372 static int nl802154_send_wpan_phy(struct cfg802154_registered_device *rdev,
 373                                   enum nl802154_commands cmd,
 374                                   struct sk_buff *msg, u32 portid, u32 seq,
 375                                   int flags)
 376 {
 377         struct nlattr *nl_cmds;
 378         void *hdr;
 379         int i;
 380
 381         hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
 382         if (!hdr)
 383                 return -ENOBUFS;
 384
 385         if (nla_put_u32(msg, NL802154_ATTR_WPAN_PHY, rdev->wpan_phy_idx) ||
 386             nla_put_string(msg, NL802154_ATTR_WPAN_PHY_NAME,
 387                            wpan_phy_name(&rdev->wpan_phy)) ||
 388             nla_put_u32(msg, NL802154_ATTR_GENERATION,
 389                         cfg802154_rdev_list_generation))
 390                 goto nla_put_failure;
 391
 392         if (cmd != NL802154_CMD_NEW_WPAN_PHY)
 393                 goto finish;
 394
 395         /* DUMP PHY PIB */
 396
 397         /* current channel settings */
 398         if (nla_put_u8(msg, NL802154_ATTR_PAGE,
 399                        rdev->wpan_phy.current_page) ||
 400             nla_put_u8(msg, NL802154_ATTR_CHANNEL,
 401                        rdev->wpan_phy.current_channel))
 402                 goto nla_put_failure;
 403
 404         /* TODO remove this behaviour, we still keep support it for a while
 405          * so users can change the behaviour to the new one.
 406          */
 407         if (nl802154_send_wpan_phy_channels(rdev, msg))
 408                 goto nla_put_failure;
 409
 410         /* cca mode */
 411         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE) {
 412                 if (nla_put_u32(msg, NL802154_ATTR_CCA_MODE,
 413                                 rdev->wpan_phy.cca.mode))
 414                         goto nla_put_failure;
 415
 416                 if (rdev->wpan_phy.cca.mode == NL802154_CCA_ENERGY_CARRIER) {
 417                         if (nla_put_u32(msg, NL802154_ATTR_CCA_OPT,
 418                                         rdev->wpan_phy.cca.opt))
 419                                 goto nla_put_failure;
 420                 }
 421         }
 422
 423         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER) {
 424                 if (nla_put_s32(msg, NL802154_ATTR_TX_POWER,
 425                                 rdev->wpan_phy.transmit_power))
 426                         goto nla_put_failure;
 427         }
 428
 429         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL) {
 430                 if (nla_put_s32(msg, NL802154_ATTR_CCA_ED_LEVEL,
 431                                 rdev->wpan_phy.cca_ed_level))
 432                         goto nla_put_failure;
 433         }
 434
 435         if (nl802154_put_capabilities(msg, rdev))
 436                 goto nla_put_failure;
 437
 438         nl_cmds = nla_nest_start(msg, NL802154_ATTR_SUPPORTED_COMMANDS);
 439         if (!nl_cmds)
 440                 goto nla_put_failure;
 441
 442         i = 0;
 443 #define CMD(op, n)                                                      \
 444         do {                                                            \
 445                 if (rdev->ops->op) {                                    \
 446                         i++;                                            \
 447                         if (nla_put_u32(msg, i, NL802154_CMD_ ## n))    \
 448                                 goto nla_put_failure;                   \
 449                 }                                                       \
 450         } while (0)
 451
 452         CMD(add_virtual_intf, NEW_INTERFACE);
 453         CMD(del_virtual_intf, DEL_INTERFACE);
 454         CMD(set_channel, SET_CHANNEL);
 455         CMD(set_pan_id, SET_PAN_ID);
 456         CMD(set_short_addr, SET_SHORT_ADDR);
 457         CMD(set_backoff_exponent, SET_BACKOFF_EXPONENT);
 458         CMD(set_max_csma_backoffs, SET_MAX_CSMA_BACKOFFS);
 459         CMD(set_max_frame_retries, SET_MAX_FRAME_RETRIES);
 460         CMD(set_lbt_mode, SET_LBT_MODE);
 461
 462         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER)
 463                 CMD(set_tx_power, SET_TX_POWER);
 464
 465         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL)
 466                 CMD(set_cca_ed_level, SET_CCA_ED_LEVEL);
 467
 468         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE)
 469                 CMD(set_cca_mode, SET_CCA_MODE);
 470
 471 #undef CMD
 472         nla_nest_end(msg, nl_cmds);
 473
 474 finish:
 475         genlmsg_end(msg, hdr);
 476         return 0;
 477
 478 nla_put_failure:
 479         genlmsg_cancel(msg, hdr);
 480         return -EMSGSIZE;
 481 }
 482
 483 struct nl802154_dump_wpan_phy_state {
 484         s64 filter_wpan_phy;
 485         long start;
 486
 487 };
 488
 489 static int nl802154_dump_wpan_phy_parse(struct sk_buff *skb,
 490                                         struct netlink_callback *cb,
 491                                         struct nl802154_dump_wpan_phy_state *state)
 492 {
 493         struct nlattr **tb = nl802154_fam.attrbuf;
 494         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl802154_fam.hdrsize,
 495                               tb, nl802154_fam.maxattr, nl802154_policy);
 496
 497         /* TODO check if we can handle error here,
 498          * we have no backward compatibility
 499          */
 500         if (ret)
 501                 return 0;
 502
 503         if (tb[NL802154_ATTR_WPAN_PHY])
 504                 state->filter_wpan_phy = nla_get_u32(tb[NL802154_ATTR_WPAN_PHY]);
 505         if (tb[NL802154_ATTR_WPAN_DEV])
 506                 state->filter_wpan_phy = nla_get_u64(tb[NL802154_ATTR_WPAN_DEV]) >> 32;
 507         if (tb[NL802154_ATTR_IFINDEX]) {
 508                 struct net_device *netdev;
 509                 struct cfg802154_registered_device *rdev;
 510                 int ifidx = nla_get_u32(tb[NL802154_ATTR_IFINDEX]);
 511
 512                 /* TODO netns */
 513                 netdev = __dev_get_by_index(&init_net, ifidx);
 514                 if (!netdev)
 515                         return -ENODEV;
 516                 if (netdev->ieee802154_ptr) {
 517                         rdev = wpan_phy_to_rdev(
 518                                         netdev->ieee802154_ptr->wpan_phy);
 519                         state->filter_wpan_phy = rdev->wpan_phy_idx;
 520                 }
 521         }
 522
 523         return 0;
 524 }
 525
 526 static int
 527 nl802154_dump_wpan_phy(struct sk_buff *skb, struct netlink_callback *cb)
 528 {
 529         int idx = 0, ret;
 530         struct nl802154_dump_wpan_phy_state *state = (void *)cb->args[0];
 531         struct cfg802154_registered_device *rdev;
 532
 533         rtnl_lock();
 534         if (!state) {
 535                 state = kzalloc(sizeof(*state), GFP_KERNEL);
 536                 if (!state) {
 537                         rtnl_unlock();
 538                         return -ENOMEM;
 539                 }
 540                 state->filter_wpan_phy = -1;
 541                 ret = nl802154_dump_wpan_phy_parse(skb, cb, state);
 542                 if (ret) {
 543                         kfree(state);
 544                         rtnl_unlock();
 545                         return ret;
 546                 }
 547                 cb->args[0] = (long)state;
 548         }
 549
 550         list_for_each_entry(rdev, &cfg802154_rdev_list, list) {
 551                 /* TODO net ns compare */
 552                 if (++idx <= state->start)
 553                         continue;
 554                 if (state->filter_wpan_phy != -1 &&
 555                     state->filter_wpan_phy != rdev->wpan_phy_idx)
 556                         continue;
 557                 /* attempt to fit multiple wpan_phy data chunks into the skb */
 558                 ret = nl802154_send_wpan_phy(rdev,
 559                                              NL802154_CMD_NEW_WPAN_PHY,
 560                                              skb,
 561                                              NETLINK_CB(cb->skb).portid,
 562                                              cb->nlh->nlmsg_seq, NLM_F_MULTI);
 563                 if (ret < 0) {
 564                         if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
 565                             !skb->len && cb->min_dump_alloc < 4096) {
 566                                 cb->min_dump_alloc = 4096;
 567                                 rtnl_unlock();
 568                                 return 1;
 569                         }
 570                         idx--;
 571                         break;
 572                 }
 573                 break;
 574         }
 575         rtnl_unlock();
 576
 577         state->start = idx;
 578
 579         return skb->len;
 580 }
 581
 582 static int nl802154_dump_wpan_phy_done(struct netlink_callback *cb)
 583 {
 584         kfree((void *)cb->args[0]);
 585         return 0;
 586 }
 587
 588 static int nl802154_get_wpan_phy(struct sk_buff *skb, struct genl_info *info)
 589 {
 590         struct sk_buff *msg;
 591         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 592
 593         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 594         if (!msg)
 595                 return -ENOMEM;
 596
 597         if (nl802154_send_wpan_phy(rdev, NL802154_CMD_NEW_WPAN_PHY, msg,
 598                                    info->snd_portid, info->snd_seq, 0) < 0) {
 599                 nlmsg_free(msg);
 600                 return -ENOBUFS;
 601         }
 602
 603         return genlmsg_reply(msg, info);
 604 }
 605
 606 static inline u64 wpan_dev_id(struct wpan_dev *wpan_dev)
 607 {
 608         return (u64)wpan_dev->identifier |
 609                ((u64)wpan_phy_to_rdev(wpan_dev->wpan_phy)->wpan_phy_idx << 32);
 610 }
 611
 612 static int
 613 nl802154_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
 614                     struct cfg802154_registered_device *rdev,
 615                     struct wpan_dev *wpan_dev)
 616 {
 617         struct net_device *dev = wpan_dev->netdev;
 618         void *hdr;
 619
 620         hdr = nl802154hdr_put(msg, portid, seq, flags,
 621                               NL802154_CMD_NEW_INTERFACE);
 622         if (!hdr)
 623                 return -1;
 624
 625         if (dev &&
 626             (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex) ||
 627              nla_put_string(msg, NL802154_ATTR_IFNAME, dev->name)))
 628                 goto nla_put_failure;
 629
 630         if (nla_put_u32(msg, NL802154_ATTR_WPAN_PHY, rdev->wpan_phy_idx) ||
 631             nla_put_u32(msg, NL802154_ATTR_IFTYPE, wpan_dev->iftype) ||
 632             nla_put_u64(msg, NL802154_ATTR_WPAN_DEV, wpan_dev_id(wpan_dev)) ||
 633             nla_put_u32(msg, NL802154_ATTR_GENERATION,
 634                         rdev->devlist_generation ^
 635                         (cfg802154_rdev_list_generation << 2)))
 636                 goto nla_put_failure;
 637
 638         /* address settings */
 639         if (nla_put_le64(msg, NL802154_ATTR_EXTENDED_ADDR,
 640                          wpan_dev->extended_addr) ||
 641             nla_put_le16(msg, NL802154_ATTR_SHORT_ADDR,
 642                          wpan_dev->short_addr) ||
 643             nla_put_le16(msg, NL802154_ATTR_PAN_ID, wpan_dev->pan_id))
 644                 goto nla_put_failure;
 645
 646         /* ARET handling */
 647         if (nla_put_s8(msg, NL802154_ATTR_MAX_FRAME_RETRIES,
 648                        wpan_dev->frame_retries) ||
 649             nla_put_u8(msg, NL802154_ATTR_MAX_BE, wpan_dev->max_be) ||
 650             nla_put_u8(msg, NL802154_ATTR_MAX_CSMA_BACKOFFS,
 651                        wpan_dev->csma_retries) ||
 652             nla_put_u8(msg, NL802154_ATTR_MIN_BE, wpan_dev->min_be))
 653                 goto nla_put_failure;
 654
 655         /* listen before transmit */
 656         if (nla_put_u8(msg, NL802154_ATTR_LBT_MODE, wpan_dev->lbt))
 657                 goto nla_put_failure;
 658
 659         genlmsg_end(msg, hdr);
 660         return 0;
 661
 662 nla_put_failure:
 663         genlmsg_cancel(msg, hdr);
 664         return -EMSGSIZE;
 665 }
 666
 667 static int
 668 nl802154_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
 669 {
 670         int wp_idx = 0;
 671         int if_idx = 0;
 672         int wp_start = cb->args[0];
 673         int if_start = cb->args[1];
 674         struct cfg802154_registered_device *rdev;
 675         struct wpan_dev *wpan_dev;
 676
 677         rtnl_lock();
 678         list_for_each_entry(rdev, &cfg802154_rdev_list, list) {
 679                 /* TODO netns compare */
 680                 if (wp_idx < wp_start) {
 681                         wp_idx++;
 682                         continue;
 683                 }
 684                 if_idx = 0;
 685
 686                 list_for_each_entry(wpan_dev, &rdev->wpan_dev_list, list) {
 687                         if (if_idx < if_start) {
 688                                 if_idx++;
 689                                 continue;
 690                         }
 691                         if (nl802154_send_iface(skb, NETLINK_CB(cb->skb).portid,
 692                                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
 693                                                 rdev, wpan_dev) < 0) {
 694                                 goto out;
 695                         }
 696                         if_idx++;
 697                 }
 698
 699                 wp_idx++;
 700         }
 701 out:
 702         rtnl_unlock();
 703
 704         cb->args[0] = wp_idx;
 705         cb->args[1] = if_idx;
 706
 707         return skb->len;
 708 }
 709
 710 static int nl802154_get_interface(struct sk_buff *skb, struct genl_info *info)
 711 {
 712         struct sk_buff *msg;
 713         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 714         struct wpan_dev *wdev = info->user_ptr[1];
 715
 716         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 717         if (!msg)
 718                 return -ENOMEM;
 719
 720         if (nl802154_send_iface(msg, info->snd_portid, info->snd_seq, 0,
 721                                 rdev, wdev) < 0) {
 722                 nlmsg_free(msg);
 723                 return -ENOBUFS;
 724         }
 725
 726         return genlmsg_reply(msg, info);
 727 }
 728
 729 static int nl802154_new_interface(struct sk_buff *skb, struct genl_info *info)
 730 {
 731         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 732         enum nl802154_iftype type = NL802154_IFTYPE_UNSPEC;
 733         __le64 extended_addr = cpu_to_le64(0x0000000000000000ULL);
 734
 735         /* TODO avoid failing a new interface
 736          * creation due to pending removal?
 737          */
 738
 739         if (!info->attrs[NL802154_ATTR_IFNAME])
 740                 return -EINVAL;
 741
 742         if (info->attrs[NL802154_ATTR_IFTYPE]) {
 743                 type = nla_get_u32(info->attrs[NL802154_ATTR_IFTYPE]);
 744                 if (type > NL802154_IFTYPE_MAX ||
 745                     !(rdev->wpan_phy.supported.iftypes & BIT(type)))
 746                         return -EINVAL;
 747         }
 748
 749         /* TODO add nla_get_le64 to netlink */
 750         if (info->attrs[NL802154_ATTR_EXTENDED_ADDR])
 751                 extended_addr = (__force __le64)nla_get_u64(
 752                                 info->attrs[NL802154_ATTR_EXTENDED_ADDR]);
 753
 754         if (!rdev->ops->add_virtual_intf)
 755                 return -EOPNOTSUPP;
 756
 757         return rdev_add_virtual_intf(rdev,
 758                                      nla_data(info->attrs[NL802154_ATTR_IFNAME]),
 759                                      NET_NAME_USER, type, extended_addr);
 760 }
 761
 762 static int nl802154_del_interface(struct sk_buff *skb, struct genl_info *info)
 763 {
 764         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 765         struct wpan_dev *wpan_dev = info->user_ptr[1];
 766
 767         if (!rdev->ops->del_virtual_intf)
 768                 return -EOPNOTSUPP;
 769
 770         /* If we remove a wpan device without a netdev then clear
 771          * user_ptr[1] so that nl802154_post_doit won't dereference it
 772          * to check if it needs to do dev_put(). Otherwise it crashes
 773          * since the wpan_dev has been freed, unlike with a netdev where
 774          * we need the dev_put() for the netdev to really be freed.
 775          */
 776         if (!wpan_dev->netdev)
 777                 info->user_ptr[1] = NULL;
 778
 779         return rdev_del_virtual_intf(rdev, wpan_dev);
 780 }
 781
 782 static int nl802154_set_channel(struct sk_buff *skb, struct genl_info *info)
 783 {
 784         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 785         u8 channel, page;
 786
 787         if (!info->attrs[NL802154_ATTR_PAGE] ||
 788             !info->attrs[NL802154_ATTR_CHANNEL])
 789                 return -EINVAL;
 790
 791         page = nla_get_u8(info->attrs[NL802154_ATTR_PAGE]);
 792         channel = nla_get_u8(info->attrs[NL802154_ATTR_CHANNEL]);
 793
 794         /* check 802.15.4 constraints */
 795         if (page > IEEE802154_MAX_PAGE || channel > IEEE802154_MAX_CHANNEL ||
 796             !(rdev->wpan_phy.supported.channels[page] & BIT(channel)))
 797                 return -EINVAL;
 798
 799         return rdev_set_channel(rdev, page, channel);
 800 }
 801
 802 static int nl802154_set_cca_mode(struct sk_buff *skb, struct genl_info *info)
 803 {
 804         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 805         struct wpan_phy_cca cca;
 806
 807         if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE))
 808                 return -EOPNOTSUPP;
 809
 810         if (!info->attrs[NL802154_ATTR_CCA_MODE])
 811                 return -EINVAL;
 812
 813         cca.mode = nla_get_u32(info->attrs[NL802154_ATTR_CCA_MODE]);
 814         /* checking 802.15.4 constraints */
 815         if (cca.mode < NL802154_CCA_ENERGY ||
 816             cca.mode > NL802154_CCA_ATTR_MAX ||
 817             !(rdev->wpan_phy.supported.cca_modes & BIT(cca.mode)))
 818                 return -EINVAL;
 819
 820         if (cca.mode == NL802154_CCA_ENERGY_CARRIER) {
 821                 if (!info->attrs[NL802154_ATTR_CCA_OPT])
 822                         return -EINVAL;
 823
 824                 cca.opt = nla_get_u32(info->attrs[NL802154_ATTR_CCA_OPT]);
 825                 if (cca.opt > NL802154_CCA_OPT_ATTR_MAX ||
 826                     !(rdev->wpan_phy.supported.cca_opts & BIT(cca.opt)))
 827                         return -EINVAL;
 828         }
 829
 830         return rdev_set_cca_mode(rdev, &cca);
 831 }
 832
 833 static int nl802154_set_cca_ed_level(struct sk_buff *skb, struct genl_info *info)
 834 {
 835         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 836         s32 ed_level;
 837         int i;
 838
 839         if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL))
 840                 return -EOPNOTSUPP;
 841
 842         if (!info->attrs[NL802154_ATTR_CCA_ED_LEVEL])
 843                 return -EINVAL;
 844
 845         ed_level = nla_get_s32(info->attrs[NL802154_ATTR_CCA_ED_LEVEL]);
 846
 847         for (i = 0; i < rdev->wpan_phy.supported.cca_ed_levels_size; i++) {
 848                 if (ed_level == rdev->wpan_phy.supported.cca_ed_levels[i])
 849                         return rdev_set_cca_ed_level(rdev, ed_level);
 850         }
 851
 852         return -EINVAL;
 853 }
 854
 855 static int nl802154_set_tx_power(struct sk_buff *skb, struct genl_info *info)
 856 {
 857         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 858         s32 power;
 859         int i;
 860
 861         if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER))
 862                 return -EOPNOTSUPP;
 863
 864         if (!info->attrs[NL802154_ATTR_TX_POWER])
 865                 return -EINVAL;
 866
 867         power = nla_get_s32(info->attrs[NL802154_ATTR_TX_POWER]);
 868
 869         for (i = 0; i < rdev->wpan_phy.supported.tx_powers_size; i++) {
 870                 if (power == rdev->wpan_phy.supported.tx_powers[i])
 871                         return rdev_set_tx_power(rdev, power);
 872         }
 873
 874         return -EINVAL;
 875 }
 876
 877 static int nl802154_set_pan_id(struct sk_buff *skb, struct genl_info *info)
 878 {
 879         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 880         struct net_device *dev = info->user_ptr[1];
 881         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
 882         __le16 pan_id;
 883
 884         /* conflict here while tx/rx calls */
 885         if (netif_running(dev))
 886                 return -EBUSY;
 887
 888         /* don't change address fields on monitor */
 889         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR ||
 890             !info->attrs[NL802154_ATTR_PAN_ID])
 891                 return -EINVAL;
 892
 893         pan_id = nla_get_le16(info->attrs[NL802154_ATTR_PAN_ID]);
 894
 895         /* TODO
 896          * I am not sure about to check here on broadcast pan_id.
 897          * Broadcast is a valid setting, comment from 802.15.4:
 898          * If this value is 0xffff, the device is not associated.
 899          *
 900          * This could useful to simple deassociate an device.
 901          */
 902         if (pan_id == cpu_to_le16(IEEE802154_PAN_ID_BROADCAST))
 903                 return -EINVAL;
 904
 905         return rdev_set_pan_id(rdev, wpan_dev, pan_id);
 906 }
 907
 908 static int nl802154_set_short_addr(struct sk_buff *skb, struct genl_info *info)
 909 {
 910         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 911         struct net_device *dev = info->user_ptr[1];
 912         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
 913         __le16 short_addr;
 914
 915         /* conflict here while tx/rx calls */
 916         if (netif_running(dev))
 917                 return -EBUSY;
 918
 919         /* don't change address fields on monitor */
 920         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR ||
 921             !info->attrs[NL802154_ATTR_SHORT_ADDR])
 922                 return -EINVAL;
 923
 924         short_addr = nla_get_le16(info->attrs[NL802154_ATTR_SHORT_ADDR]);
 925
 926         /* TODO
 927          * I am not sure about to check here on broadcast short_addr.
 928          * Broadcast is a valid setting, comment from 802.15.4:
 929          * A value of 0xfffe indicates that the device has
 930          * associated but has not been allocated an address. A
 931          * value of 0xffff indicates that the device does not
 932          * have a short address.
 933          *
 934          * I think we should allow to set these settings but
 935          * don't allow to allow socket communication with it.
 936          */
 937         if (short_addr == cpu_to_le16(IEEE802154_ADDR_SHORT_UNSPEC) ||
 938             short_addr == cpu_to_le16(IEEE802154_ADDR_SHORT_BROADCAST))
 939                 return -EINVAL;
 940
 941         return rdev_set_short_addr(rdev, wpan_dev, short_addr);
 942 }
 943
 944 static int
 945 nl802154_set_backoff_exponent(struct sk_buff *skb, struct genl_info *info)
 946 {
 947         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 948         struct net_device *dev = info->user_ptr[1];
 949         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
 950         u8 min_be, max_be;
 951
 952         /* should be set on netif open inside phy settings */
 953         if (netif_running(dev))
 954                 return -EBUSY;
 955
 956         if (!info->attrs[NL802154_ATTR_MIN_BE] ||
 957             !info->attrs[NL802154_ATTR_MAX_BE])
 958                 return -EINVAL;
 959
 960         min_be = nla_get_u8(info->attrs[NL802154_ATTR_MIN_BE]);
 961         max_be = nla_get_u8(info->attrs[NL802154_ATTR_MAX_BE]);
 962
 963         /* check 802.15.4 constraints */
 964         if (min_be < rdev->wpan_phy.supported.min_minbe ||
 965             min_be > rdev->wpan_phy.supported.max_minbe ||
 966             max_be < rdev->wpan_phy.supported.min_maxbe ||
 967             max_be > rdev->wpan_phy.supported.max_maxbe ||
 968             min_be > max_be)
 969                 return -EINVAL;
 970
 971         return rdev_set_backoff_exponent(rdev, wpan_dev, min_be, max_be);
 972 }
 973
 974 static int
 975 nl802154_set_max_csma_backoffs(struct sk_buff *skb, struct genl_info *info)
 976 {
 977         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 978         struct net_device *dev = info->user_ptr[1];
 979         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
 980         u8 max_csma_backoffs;
 981
 982         /* conflict here while other running iface settings */
 983         if (netif_running(dev))
 984                 return -EBUSY;
 985
 986         if (!info->attrs[NL802154_ATTR_MAX_CSMA_BACKOFFS])
 987                 return -EINVAL;
 988
 989         max_csma_backoffs = nla_get_u8(
 990                         info->attrs[NL802154_ATTR_MAX_CSMA_BACKOFFS]);
 991
 992         /* check 802.15.4 constraints */
 993         if (max_csma_backoffs < rdev->wpan_phy.supported.min_csma_backoffs ||
 994             max_csma_backoffs > rdev->wpan_phy.supported.max_csma_backoffs)
 995                 return -EINVAL;
 996
 997         return rdev_set_max_csma_backoffs(rdev, wpan_dev, max_csma_backoffs);
 998 }
 999
1000 static int
1001 nl802154_set_max_frame_retries(struct sk_buff *skb, struct genl_info *info)
1002 {
1003         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1004         struct net_device *dev = info->user_ptr[1];
1005         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1006         s8 max_frame_retries;
1007
1008         if (netif_running(dev))
1009                 return -EBUSY;
1010
1011         if (!info->attrs[NL802154_ATTR_MAX_FRAME_RETRIES])
1012                 return -EINVAL;
1013
1014         max_frame_retries = nla_get_s8(
1015                         info->attrs[NL802154_ATTR_MAX_FRAME_RETRIES]);
1016
1017         /* check 802.15.4 constraints */
1018         if (max_frame_retries < rdev->wpan_phy.supported.min_frame_retries ||
1019             max_frame_retries > rdev->wpan_phy.supported.max_frame_retries)
1020                 return -EINVAL;
1021
1022         return rdev_set_max_frame_retries(rdev, wpan_dev, max_frame_retries);
1023 }
1024
1025 static int nl802154_set_lbt_mode(struct sk_buff *skb, struct genl_info *info)
1026 {
1027         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1028         struct net_device *dev = info->user_ptr[1];
1029         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1030         bool mode;
1031
1032         if (netif_running(dev))
1033                 return -EBUSY;
1034
1035         if (!info->attrs[NL802154_ATTR_LBT_MODE])
1036                 return -EINVAL;
1037
1038         mode = !!nla_get_u8(info->attrs[NL802154_ATTR_LBT_MODE]);
1039         if (!wpan_phy_supported_bool(mode, rdev->wpan_phy.supported.lbt))
1040                 return -EINVAL;
1041
1042         return rdev_set_lbt_mode(rdev, wpan_dev, mode);
1043 }
1044
1045 #define NL802154_FLAG_NEED_WPAN_PHY     0x01
1046 #define NL802154_FLAG_NEED_NETDEV       0x02
1047 #define NL802154_FLAG_NEED_RTNL         0x04
1048 #define NL802154_FLAG_CHECK_NETDEV_UP   0x08
1049 #define NL802154_FLAG_NEED_NETDEV_UP    (NL802154_FLAG_NEED_NETDEV |\
1050                                          NL802154_FLAG_CHECK_NETDEV_UP)
1051 #define NL802154_FLAG_NEED_WPAN_DEV     0x10
1052 #define NL802154_FLAG_NEED_WPAN_DEV_UP  (NL802154_FLAG_NEED_WPAN_DEV |\
1053                                          NL802154_FLAG_CHECK_NETDEV_UP)
1054
1055 static int nl802154_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
1056                              struct genl_info *info)
1057 {
1058         struct cfg802154_registered_device *rdev;
1059         struct wpan_dev *wpan_dev;
1060         struct net_device *dev;
1061         bool rtnl = ops->internal_flags & NL802154_FLAG_NEED_RTNL;
1062
1063         if (rtnl)
1064                 rtnl_lock();
1065
1066         if (ops->internal_flags & NL802154_FLAG_NEED_WPAN_PHY) {
1067                 rdev = cfg802154_get_dev_from_info(genl_info_net(info), info);
1068                 if (IS_ERR(rdev)) {
1069                         if (rtnl)
1070                                 rtnl_unlock();
1071                         return PTR_ERR(rdev);
1072                 }
1073                 info->user_ptr[0] = rdev;
1074         } else if (ops->internal_flags & NL802154_FLAG_NEED_NETDEV ||
1075                    ops->internal_flags & NL802154_FLAG_NEED_WPAN_DEV) {
1076                 ASSERT_RTNL();
1077                 wpan_dev = __cfg802154_wpan_dev_from_attrs(genl_info_net(info),
1078                                                            info->attrs);
1079                 if (IS_ERR(wpan_dev)) {
1080                         if (rtnl)
1081                                 rtnl_unlock();
1082                         return PTR_ERR(wpan_dev);
1083                 }
1084
1085                 dev = wpan_dev->netdev;
1086                 rdev = wpan_phy_to_rdev(wpan_dev->wpan_phy);
1087
1088                 if (ops->internal_flags & NL802154_FLAG_NEED_NETDEV) {
1089                         if (!dev) {
1090                                 if (rtnl)
1091                                         rtnl_unlock();
1092                                 return -EINVAL;
1093                         }
1094
1095                         info->user_ptr[1] = dev;
1096                 } else {
1097                         info->user_ptr[1] = wpan_dev;
1098                 }
1099
1100                 if (dev) {
1101                         if (ops->internal_flags & NL802154_FLAG_CHECK_NETDEV_UP &&
1102                             !netif_running(dev)) {
1103                                 if (rtnl)
1104                                         rtnl_unlock();
1105                                 return -ENETDOWN;
1106                         }
1107
1108                         dev_hold(dev);
1109                 }
1110
1111                 info->user_ptr[0] = rdev;
1112         }
1113
1114         return 0;
1115 }
1116
1117 static void nl802154_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
1118                                struct genl_info *info)
1119 {
1120         if (info->user_ptr[1]) {
1121                 if (ops->internal_flags & NL802154_FLAG_NEED_WPAN_DEV) {
1122                         struct wpan_dev *wpan_dev = info->user_ptr[1];
1123
1124                         if (wpan_dev->netdev)
1125                                 dev_put(wpan_dev->netdev);
1126                 } else {
1127                         dev_put(info->user_ptr[1]);
1128                 }
1129         }
1130
1131         if (ops->internal_flags & NL802154_FLAG_NEED_RTNL)
1132                 rtnl_unlock();
1133 }
1134
1135 static const struct genl_ops nl802154_ops[] = {
1136         {
1137                 .cmd = NL802154_CMD_GET_WPAN_PHY,
1138                 .doit = nl802154_get_wpan_phy,
1139                 .dumpit = nl802154_dump_wpan_phy,
1140                 .done = nl802154_dump_wpan_phy_done,
1141                 .policy = nl802154_policy,
1142                 /* can be retrieved by unprivileged users */
1143                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
1144                                   NL802154_FLAG_NEED_RTNL,
1145         },
1146         {
1147                 .cmd = NL802154_CMD_GET_INTERFACE,
1148                 .doit = nl802154_get_interface,
1149                 .dumpit = nl802154_dump_interface,
1150                 .policy = nl802154_policy,
1151                 /* can be retrieved by unprivileged users */
1152                 .internal_flags = NL802154_FLAG_NEED_WPAN_DEV |
1153                                   NL802154_FLAG_NEED_RTNL,
1154         },
1155         {
1156                 .cmd = NL802154_CMD_NEW_INTERFACE,
1157                 .doit = nl802154_new_interface,
1158                 .policy = nl802154_policy,
1159                 .flags = GENL_ADMIN_PERM,
1160                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
1161                                   NL802154_FLAG_NEED_RTNL,
1162         },
1163         {
1164                 .cmd = NL802154_CMD_DEL_INTERFACE,
1165                 .doit = nl802154_del_interface,
1166                 .policy = nl802154_policy,
1167                 .flags = GENL_ADMIN_PERM,
1168                 .internal_flags = NL802154_FLAG_NEED_WPAN_DEV |
1169                                   NL802154_FLAG_NEED_RTNL,
1170         },
1171         {
1172                 .cmd = NL802154_CMD_SET_CHANNEL,
1173                 .doit = nl802154_set_channel,
1174                 .policy = nl802154_policy,
1175                 .flags = GENL_ADMIN_PERM,
1176                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
1177                                   NL802154_FLAG_NEED_RTNL,
1178         },
1179         {
1180                 .cmd = NL802154_CMD_SET_CCA_MODE,
1181                 .doit = nl802154_set_cca_mode,
1182                 .policy = nl802154_policy,
1183                 .flags = GENL_ADMIN_PERM,
1184                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
1185                                   NL802154_FLAG_NEED_RTNL,
1186         },
1187         {
1188                 .cmd = NL802154_CMD_SET_CCA_ED_LEVEL,
1189                 .doit = nl802154_set_cca_ed_level,
1190                 .policy = nl802154_policy,
1191                 .flags = GENL_ADMIN_PERM,
1192                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
1193                                   NL802154_FLAG_NEED_RTNL,
1194         },
1195         {
1196                 .cmd = NL802154_CMD_SET_TX_POWER,
1197                 .doit = nl802154_set_tx_power,
1198                 .policy = nl802154_policy,
1199                 .flags = GENL_ADMIN_PERM,
1200                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
1201                                   NL802154_FLAG_NEED_RTNL,
1202         },
1203         {
1204                 .cmd = NL802154_CMD_SET_PAN_ID,
1205                 .doit = nl802154_set_pan_id,
1206                 .policy = nl802154_policy,
1207                 .flags = GENL_ADMIN_PERM,
1208                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
1209                                   NL802154_FLAG_NEED_RTNL,
1210         },
1211         {
1212                 .cmd = NL802154_CMD_SET_SHORT_ADDR,
1213                 .doit = nl802154_set_short_addr,
1214                 .policy = nl802154_policy,
1215                 .flags = GENL_ADMIN_PERM,
1216                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
1217                                   NL802154_FLAG_NEED_RTNL,
1218         },
1219         {
1220                 .cmd = NL802154_CMD_SET_BACKOFF_EXPONENT,
1221                 .doit = nl802154_set_backoff_exponent,
1222                 .policy = nl802154_policy,
1223                 .flags = GENL_ADMIN_PERM,
1224                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
1225                                   NL802154_FLAG_NEED_RTNL,
1226         },
1227         {
1228                 .cmd = NL802154_CMD_SET_MAX_CSMA_BACKOFFS,
1229                 .doit = nl802154_set_max_csma_backoffs,
1230                 .policy = nl802154_policy,
1231                 .flags = GENL_ADMIN_PERM,
1232                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
1233                                   NL802154_FLAG_NEED_RTNL,
1234         },
1235         {
1236                 .cmd = NL802154_CMD_SET_MAX_FRAME_RETRIES,
1237                 .doit = nl802154_set_max_frame_retries,
1238                 .policy = nl802154_policy,
1239                 .flags = GENL_ADMIN_PERM,
1240                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
1241                                   NL802154_FLAG_NEED_RTNL,
1242         },
1243         {
1244                 .cmd = NL802154_CMD_SET_LBT_MODE,
1245                 .doit = nl802154_set_lbt_mode,
1246                 .policy = nl802154_policy,
1247                 .flags = GENL_ADMIN_PERM,
1248                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
1249                                   NL802154_FLAG_NEED_RTNL,
1250         },
1251 };
1252
1253 /* initialisation/exit functions */
1254 int nl802154_init(void)
1255 {
1256         return genl_register_family_with_ops_groups(&nl802154_fam, nl802154_ops,
1257                                                     nl802154_mcgrps);
1258 }
1259
1260 void nl802154_exit(void)
1261 {
1262         genl_unregister_family(&nl802154_fam);
1263 }