net/ieee802154/nl802154.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *
   4  * Authors:
   5  * Alexander Aring <aar@pengutronix.de>
   6  *
   7  * Based on: net/wireless/nl80211.c
   8  */
   9
  10 #include <linux/rtnetlink.h>
  11
  12 #include <net/cfg802154.h>
  13 #include <net/genetlink.h>
  14 #include <net/mac802154.h>
  15 #include <net/netlink.h>
  16 #include <net/nl802154.h>
  17 #include <net/sock.h>
  18
  19 #include "nl802154.h"
  20 #include "rdev-ops.h"
  21 #include "core.h"
  22
  23 /* the netlink family */
  24 static struct genl_family nl802154_fam;
  25
  26 /* multicast groups */
  27 enum nl802154_multicast_groups {
  28         NL802154_MCGRP_CONFIG,
  29 };
  30
  31 static const struct genl_multicast_group nl802154_mcgrps[] = {
  32         [NL802154_MCGRP_CONFIG] = { .name = "config", },
  33 };
  34
  35 /* returns ERR_PTR values */
  36 static struct wpan_dev *
  37 __cfg802154_wpan_dev_from_attrs(struct net *netns, struct nlattr **attrs)
  38 {
  39         struct cfg802154_registered_device *rdev;
  40         struct wpan_dev *result = NULL;
  41         bool have_ifidx = attrs[NL802154_ATTR_IFINDEX];
  42         bool have_wpan_dev_id = attrs[NL802154_ATTR_WPAN_DEV];
  43         u64 wpan_dev_id;
  44         int wpan_phy_idx = -1;
  45         int ifidx = -1;
  46
  47         ASSERT_RTNL();
  48
  49         if (!have_ifidx && !have_wpan_dev_id)
  50                 return ERR_PTR(-EINVAL);
  51
  52         if (have_ifidx)
  53                 ifidx = nla_get_u32(attrs[NL802154_ATTR_IFINDEX]);
  54         if (have_wpan_dev_id) {
  55                 wpan_dev_id = nla_get_u64(attrs[NL802154_ATTR_WPAN_DEV]);
  56                 wpan_phy_idx = wpan_dev_id >> 32;
  57         }
  58
  59         list_for_each_entry(rdev, &cfg802154_rdev_list, list) {
  60                 struct wpan_dev *wpan_dev;
  61
  62                 if (wpan_phy_net(&rdev->wpan_phy) != netns)
  63                         continue;
  64
  65                 if (have_wpan_dev_id && rdev->wpan_phy_idx != wpan_phy_idx)
  66                         continue;
  67
  68                 list_for_each_entry(wpan_dev, &rdev->wpan_dev_list, list) {
  69                         if (have_ifidx && wpan_dev->netdev &&
  70                             wpan_dev->netdev->ifindex == ifidx) {
  71                                 result = wpan_dev;
  72                                 break;
  73                         }
  74                         if (have_wpan_dev_id &&
  75                             wpan_dev->identifier == (u32)wpan_dev_id) {
  76                                 result = wpan_dev;
  77                                 break;
  78                         }
  79                 }
  80
  81                 if (result)
  82                         break;
  83         }
  84
  85         if (result)
  86                 return result;
  87
  88         return ERR_PTR(-ENODEV);
  89 }
  90
  91 static struct cfg802154_registered_device *
  92 __cfg802154_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
  93 {
  94         struct cfg802154_registered_device *rdev = NULL, *tmp;
  95         struct net_device *netdev;
  96
  97         ASSERT_RTNL();
  98
  99         if (!attrs[NL802154_ATTR_WPAN_PHY] &&
 100             !attrs[NL802154_ATTR_IFINDEX] &&
 101             !attrs[NL802154_ATTR_WPAN_DEV])
 102                 return ERR_PTR(-EINVAL);
 103
 104         if (attrs[NL802154_ATTR_WPAN_PHY])
 105                 rdev = cfg802154_rdev_by_wpan_phy_idx(
 106                                 nla_get_u32(attrs[NL802154_ATTR_WPAN_PHY]));
 107
 108         if (attrs[NL802154_ATTR_WPAN_DEV]) {
 109                 u64 wpan_dev_id = nla_get_u64(attrs[NL802154_ATTR_WPAN_DEV]);
 110                 struct wpan_dev *wpan_dev;
 111                 bool found = false;
 112
 113                 tmp = cfg802154_rdev_by_wpan_phy_idx(wpan_dev_id >> 32);
 114                 if (tmp) {
 115                         /* make sure wpan_dev exists */
 116                         list_for_each_entry(wpan_dev, &tmp->wpan_dev_list, list) {
 117                                 if (wpan_dev->identifier != (u32)wpan_dev_id)
 118                                         continue;
 119                                 found = true;
 120                                 break;
 121                         }
 122
 123                         if (!found)
 124                                 tmp = NULL;
 125
 126                         if (rdev && tmp != rdev)
 127                                 return ERR_PTR(-EINVAL);
 128                         rdev = tmp;
 129                 }
 130         }
 131
 132         if (attrs[NL802154_ATTR_IFINDEX]) {
 133                 int ifindex = nla_get_u32(attrs[NL802154_ATTR_IFINDEX]);
 134
 135                 netdev = __dev_get_by_index(netns, ifindex);
 136                 if (netdev) {
 137                         if (netdev->ieee802154_ptr)
 138                                 tmp = wpan_phy_to_rdev(
 139                                                 netdev->ieee802154_ptr->wpan_phy);
 140                         else
 141                                 tmp = NULL;
 142
 143                         /* not wireless device -- return error */
 144                         if (!tmp)
 145                                 return ERR_PTR(-EINVAL);
 146
 147                         /* mismatch -- return error */
 148                         if (rdev && tmp != rdev)
 149                                 return ERR_PTR(-EINVAL);
 150
 151                         rdev = tmp;
 152                 }
 153         }
 154
 155         if (!rdev)
 156                 return ERR_PTR(-ENODEV);
 157
 158         if (netns != wpan_phy_net(&rdev->wpan_phy))
 159                 return ERR_PTR(-ENODEV);
 160
 161         return rdev;
 162 }
 163
 164 /* This function returns a pointer to the driver
 165  * that the genl_info item that is passed refers to.
 166  *
 167  * The result of this can be a PTR_ERR and hence must
 168  * be checked with IS_ERR() for errors.
 169  */
 170 static struct cfg802154_registered_device *
 171 cfg802154_get_dev_from_info(struct net *netns, struct genl_info *info)
 172 {
 173         return __cfg802154_rdev_from_attrs(netns, info->attrs);
 174 }
 175
 176 /* policy for the attributes */
 177 static const struct nla_policy nl802154_policy[NL802154_ATTR_MAX+1] = {
 178         [NL802154_ATTR_WPAN_PHY] = { .type = NLA_U32 },
 179         [NL802154_ATTR_WPAN_PHY_NAME] = { .type = NLA_NUL_STRING,
 180                                           .len = 20-1 },
 181
 182         [NL802154_ATTR_IFINDEX] = { .type = NLA_U32 },
 183         [NL802154_ATTR_IFTYPE] = { .type = NLA_U32 },
 184         [NL802154_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 185
 186         [NL802154_ATTR_WPAN_DEV] = { .type = NLA_U64 },
 187
 188         [NL802154_ATTR_PAGE] = { .type = NLA_U8, },
 189         [NL802154_ATTR_CHANNEL] = { .type = NLA_U8, },
 190
 191         [NL802154_ATTR_TX_POWER] = { .type = NLA_S32, },
 192
 193         [NL802154_ATTR_CCA_MODE] = { .type = NLA_U32, },
 194         [NL802154_ATTR_CCA_OPT] = { .type = NLA_U32, },
 195         [NL802154_ATTR_CCA_ED_LEVEL] = { .type = NLA_S32, },
 196
 197         [NL802154_ATTR_SUPPORTED_CHANNEL] = { .type = NLA_U32, },
 198
 199         [NL802154_ATTR_PAN_ID] = { .type = NLA_U16, },
 200         [NL802154_ATTR_EXTENDED_ADDR] = { .type = NLA_U64 },
 201         [NL802154_ATTR_SHORT_ADDR] = { .type = NLA_U16, },
 202
 203         [NL802154_ATTR_MIN_BE] = { .type = NLA_U8, },
 204         [NL802154_ATTR_MAX_BE] = { .type = NLA_U8, },
 205         [NL802154_ATTR_MAX_CSMA_BACKOFFS] = { .type = NLA_U8, },
 206
 207         [NL802154_ATTR_MAX_FRAME_RETRIES] = { .type = NLA_S8, },
 208
 209         [NL802154_ATTR_LBT_MODE] = { .type = NLA_U8, },
 210
 211         [NL802154_ATTR_WPAN_PHY_CAPS] = { .type = NLA_NESTED },
 212
 213         [NL802154_ATTR_SUPPORTED_COMMANDS] = { .type = NLA_NESTED },
 214
 215         [NL802154_ATTR_ACKREQ_DEFAULT] = { .type = NLA_U8 },
 216
 217         [NL802154_ATTR_PID] = { .type = NLA_U32 },
 218         [NL802154_ATTR_NETNS_FD] = { .type = NLA_U32 },
 219 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
 220         [NL802154_ATTR_SEC_ENABLED] = { .type = NLA_U8, },
 221         [NL802154_ATTR_SEC_OUT_LEVEL] = { .type = NLA_U32, },
 222         [NL802154_ATTR_SEC_OUT_KEY_ID] = { .type = NLA_NESTED, },
 223         [NL802154_ATTR_SEC_FRAME_COUNTER] = { .type = NLA_U32 },
 224
 225         [NL802154_ATTR_SEC_LEVEL] = { .type = NLA_NESTED },
 226         [NL802154_ATTR_SEC_DEVICE] = { .type = NLA_NESTED },
 227         [NL802154_ATTR_SEC_DEVKEY] = { .type = NLA_NESTED },
 228         [NL802154_ATTR_SEC_KEY] = { .type = NLA_NESTED },
 229 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
 230 };
 231
 232 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
 233 static int
 234 nl802154_prepare_wpan_dev_dump(struct sk_buff *skb,
 235                                struct netlink_callback *cb,
 236                                struct cfg802154_registered_device **rdev,
 237                                struct wpan_dev **wpan_dev)
 238 {
 239         const struct genl_dumpit_info *info = genl_dumpit_info(cb);
 240         int err;
 241
 242         rtnl_lock();
 243
 244         if (!cb->args[0]) {
 245                 *wpan_dev = __cfg802154_wpan_dev_from_attrs(sock_net(skb->sk),
 246                                                             info->attrs);
 247                 if (IS_ERR(*wpan_dev)) {
 248                         err = PTR_ERR(*wpan_dev);
 249                         goto out_unlock;
 250                 }
 251                 *rdev = wpan_phy_to_rdev((*wpan_dev)->wpan_phy);
 252                 /* 0 is the first index - add 1 to parse only once */
 253                 cb->args[0] = (*rdev)->wpan_phy_idx + 1;
 254                 cb->args[1] = (*wpan_dev)->identifier;
 255         } else {
 256                 /* subtract the 1 again here */
 257                 struct wpan_phy *wpan_phy = wpan_phy_idx_to_wpan_phy(cb->args[0] - 1);
 258                 struct wpan_dev *tmp;
 259
 260                 if (!wpan_phy) {
 261                         err = -ENODEV;
 262                         goto out_unlock;
 263                 }
 264                 *rdev = wpan_phy_to_rdev(wpan_phy);
 265                 *wpan_dev = NULL;
 266
 267                 list_for_each_entry(tmp, &(*rdev)->wpan_dev_list, list) {
 268                         if (tmp->identifier == cb->args[1]) {
 269                                 *wpan_dev = tmp;
 270                                 break;
 271                         }
 272                 }
 273
 274                 if (!*wpan_dev) {
 275                         err = -ENODEV;
 276                         goto out_unlock;
 277                 }
 278         }
 279
 280         return 0;
 281  out_unlock:
 282         rtnl_unlock();
 283         return err;
 284 }
 285
 286 static void
 287 nl802154_finish_wpan_dev_dump(struct cfg802154_registered_device *rdev)
 288 {
 289         rtnl_unlock();
 290 }
 291 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
 292
 293 /* message building helper */
 294 static inline void *nl802154hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 295                                     int flags, u8 cmd)
 296 {
 297         /* since there is no private header just add the generic one */
 298         return genlmsg_put(skb, portid, seq, &nl802154_fam, flags, cmd);
 299 }
 300
 301 static int
 302 nl802154_put_flags(struct sk_buff *msg, int attr, u32 mask)
 303 {
 304         struct nlattr *nl_flags = nla_nest_start_noflag(msg, attr);
 305         int i;
 306
 307         if (!nl_flags)
 308                 return -ENOBUFS;
 309
 310         i = 0;
 311         while (mask) {
 312                 if ((mask & 1) && nla_put_flag(msg, i))
 313                         return -ENOBUFS;
 314
 315                 mask >>= 1;
 316                 i++;
 317         }
 318
 319         nla_nest_end(msg, nl_flags);
 320         return 0;
 321 }
 322
 323 static int
 324 nl802154_send_wpan_phy_channels(struct cfg802154_registered_device *rdev,
 325                                 struct sk_buff *msg)
 326 {
 327         struct nlattr *nl_page;
 328         unsigned long page;
 329
 330         nl_page = nla_nest_start_noflag(msg, NL802154_ATTR_CHANNELS_SUPPORTED);
 331         if (!nl_page)
 332                 return -ENOBUFS;
 333
 334         for (page = 0; page <= IEEE802154_MAX_PAGE; page++) {
 335                 if (nla_put_u32(msg, NL802154_ATTR_SUPPORTED_CHANNEL,
 336                                 rdev->wpan_phy.supported.channels[page]))
 337                         return -ENOBUFS;
 338         }
 339         nla_nest_end(msg, nl_page);
 340
 341         return 0;
 342 }
 343
 344 static int
 345 nl802154_put_capabilities(struct sk_buff *msg,
 346                           struct cfg802154_registered_device *rdev)
 347 {
 348         const struct wpan_phy_supported *caps = &rdev->wpan_phy.supported;
 349         struct nlattr *nl_caps, *nl_channels;
 350         int i;
 351
 352         nl_caps = nla_nest_start_noflag(msg, NL802154_ATTR_WPAN_PHY_CAPS);
 353         if (!nl_caps)
 354                 return -ENOBUFS;
 355
 356         nl_channels = nla_nest_start_noflag(msg, NL802154_CAP_ATTR_CHANNELS);
 357         if (!nl_channels)
 358                 return -ENOBUFS;
 359
 360         for (i = 0; i <= IEEE802154_MAX_PAGE; i++) {
 361                 if (caps->channels[i]) {
 362                         if (nl802154_put_flags(msg, i, caps->channels[i]))
 363                                 return -ENOBUFS;
 364                 }
 365         }
 366
 367         nla_nest_end(msg, nl_channels);
 368
 369         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL) {
 370                 struct nlattr *nl_ed_lvls;
 371
 372                 nl_ed_lvls = nla_nest_start_noflag(msg,
 373                                                    NL802154_CAP_ATTR_CCA_ED_LEVELS);
 374                 if (!nl_ed_lvls)
 375                         return -ENOBUFS;
 376
 377                 for (i = 0; i < caps->cca_ed_levels_size; i++) {
 378                         if (nla_put_s32(msg, i, caps->cca_ed_levels[i]))
 379                                 return -ENOBUFS;
 380                 }
 381
 382                 nla_nest_end(msg, nl_ed_lvls);
 383         }
 384
 385         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER) {
 386                 struct nlattr *nl_tx_pwrs;
 387
 388                 nl_tx_pwrs = nla_nest_start_noflag(msg,
 389                                                    NL802154_CAP_ATTR_TX_POWERS);
 390                 if (!nl_tx_pwrs)
 391                         return -ENOBUFS;
 392
 393                 for (i = 0; i < caps->tx_powers_size; i++) {
 394                         if (nla_put_s32(msg, i, caps->tx_powers[i]))
 395                                 return -ENOBUFS;
 396                 }
 397
 398                 nla_nest_end(msg, nl_tx_pwrs);
 399         }
 400
 401         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE) {
 402                 if (nl802154_put_flags(msg, NL802154_CAP_ATTR_CCA_MODES,
 403                                        caps->cca_modes) ||
 404                     nl802154_put_flags(msg, NL802154_CAP_ATTR_CCA_OPTS,
 405                                        caps->cca_opts))
 406                         return -ENOBUFS;
 407         }
 408
 409         if (nla_put_u8(msg, NL802154_CAP_ATTR_MIN_MINBE, caps->min_minbe) ||
 410             nla_put_u8(msg, NL802154_CAP_ATTR_MAX_MINBE, caps->max_minbe) ||
 411             nla_put_u8(msg, NL802154_CAP_ATTR_MIN_MAXBE, caps->min_maxbe) ||
 412             nla_put_u8(msg, NL802154_CAP_ATTR_MAX_MAXBE, caps->max_maxbe) ||
 413             nla_put_u8(msg, NL802154_CAP_ATTR_MIN_CSMA_BACKOFFS,
 414                        caps->min_csma_backoffs) ||
 415             nla_put_u8(msg, NL802154_CAP_ATTR_MAX_CSMA_BACKOFFS,
 416                        caps->max_csma_backoffs) ||
 417             nla_put_s8(msg, NL802154_CAP_ATTR_MIN_FRAME_RETRIES,
 418                        caps->min_frame_retries) ||
 419             nla_put_s8(msg, NL802154_CAP_ATTR_MAX_FRAME_RETRIES,
 420                        caps->max_frame_retries) ||
 421             nl802154_put_flags(msg, NL802154_CAP_ATTR_IFTYPES,
 422                                caps->iftypes) ||
 423             nla_put_u32(msg, NL802154_CAP_ATTR_LBT, caps->lbt))
 424                 return -ENOBUFS;
 425
 426         nla_nest_end(msg, nl_caps);
 427
 428         return 0;
 429 }
 430
 431 static int nl802154_send_wpan_phy(struct cfg802154_registered_device *rdev,
 432                                   enum nl802154_commands cmd,
 433                                   struct sk_buff *msg, u32 portid, u32 seq,
 434                                   int flags)
 435 {
 436         struct nlattr *nl_cmds;
 437         void *hdr;
 438         int i;
 439
 440         hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
 441         if (!hdr)
 442                 return -ENOBUFS;
 443
 444         if (nla_put_u32(msg, NL802154_ATTR_WPAN_PHY, rdev->wpan_phy_idx) ||
 445             nla_put_string(msg, NL802154_ATTR_WPAN_PHY_NAME,
 446                            wpan_phy_name(&rdev->wpan_phy)) ||
 447             nla_put_u32(msg, NL802154_ATTR_GENERATION,
 448                         cfg802154_rdev_list_generation))
 449                 goto nla_put_failure;
 450
 451         if (cmd != NL802154_CMD_NEW_WPAN_PHY)
 452                 goto finish;
 453
 454         /* DUMP PHY PIB */
 455
 456         /* current channel settings */
 457         if (nla_put_u8(msg, NL802154_ATTR_PAGE,
 458                        rdev->wpan_phy.current_page) ||
 459             nla_put_u8(msg, NL802154_ATTR_CHANNEL,
 460                        rdev->wpan_phy.current_channel))
 461                 goto nla_put_failure;
 462
 463         /* TODO remove this behaviour, we still keep support it for a while
 464          * so users can change the behaviour to the new one.
 465          */
 466         if (nl802154_send_wpan_phy_channels(rdev, msg))
 467                 goto nla_put_failure;
 468
 469         /* cca mode */
 470         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE) {
 471                 if (nla_put_u32(msg, NL802154_ATTR_CCA_MODE,
 472                                 rdev->wpan_phy.cca.mode))
 473                         goto nla_put_failure;
 474
 475                 if (rdev->wpan_phy.cca.mode == NL802154_CCA_ENERGY_CARRIER) {
 476                         if (nla_put_u32(msg, NL802154_ATTR_CCA_OPT,
 477                                         rdev->wpan_phy.cca.opt))
 478                                 goto nla_put_failure;
 479                 }
 480         }
 481
 482         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER) {
 483                 if (nla_put_s32(msg, NL802154_ATTR_TX_POWER,
 484                                 rdev->wpan_phy.transmit_power))
 485                         goto nla_put_failure;
 486         }
 487
 488         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL) {
 489                 if (nla_put_s32(msg, NL802154_ATTR_CCA_ED_LEVEL,
 490                                 rdev->wpan_phy.cca_ed_level))
 491                         goto nla_put_failure;
 492         }
 493
 494         if (nl802154_put_capabilities(msg, rdev))
 495                 goto nla_put_failure;
 496
 497         nl_cmds = nla_nest_start_noflag(msg, NL802154_ATTR_SUPPORTED_COMMANDS);
 498         if (!nl_cmds)
 499                 goto nla_put_failure;
 500
 501         i = 0;
 502 #define CMD(op, n)                                                      \
 503         do {                                                            \
 504                 if (rdev->ops->op) {                                    \
 505                         i++;                                            \
 506                         if (nla_put_u32(msg, i, NL802154_CMD_ ## n))    \
 507                                 goto nla_put_failure;                   \
 508                 }                                                       \
 509         } while (0)
 510
 511         CMD(add_virtual_intf, NEW_INTERFACE);
 512         CMD(del_virtual_intf, DEL_INTERFACE);
 513         CMD(set_channel, SET_CHANNEL);
 514         CMD(set_pan_id, SET_PAN_ID);
 515         CMD(set_short_addr, SET_SHORT_ADDR);
 516         CMD(set_backoff_exponent, SET_BACKOFF_EXPONENT);
 517         CMD(set_max_csma_backoffs, SET_MAX_CSMA_BACKOFFS);
 518         CMD(set_max_frame_retries, SET_MAX_FRAME_RETRIES);
 519         CMD(set_lbt_mode, SET_LBT_MODE);
 520         CMD(set_ackreq_default, SET_ACKREQ_DEFAULT);
 521
 522         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER)
 523                 CMD(set_tx_power, SET_TX_POWER);
 524
 525         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL)
 526                 CMD(set_cca_ed_level, SET_CCA_ED_LEVEL);
 527
 528         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE)
 529                 CMD(set_cca_mode, SET_CCA_MODE);
 530
 531 #undef CMD
 532         nla_nest_end(msg, nl_cmds);
 533
 534 finish:
 535         genlmsg_end(msg, hdr);
 536         return 0;
 537
 538 nla_put_failure:
 539         genlmsg_cancel(msg, hdr);
 540         return -EMSGSIZE;
 541 }
 542
 543 struct nl802154_dump_wpan_phy_state {
 544         s64 filter_wpan_phy;
 545         long start;
 546
 547 };
 548
 549 static int nl802154_dump_wpan_phy_parse(struct sk_buff *skb,
 550                                         struct netlink_callback *cb,
 551                                         struct nl802154_dump_wpan_phy_state *state)
 552 {
 553         const struct genl_dumpit_info *info = genl_dumpit_info(cb);
 554         struct nlattr **tb = info->attrs;
 555
 556         if (tb[NL802154_ATTR_WPAN_PHY])
 557                 state->filter_wpan_phy = nla_get_u32(tb[NL802154_ATTR_WPAN_PHY]);
 558         if (tb[NL802154_ATTR_WPAN_DEV])
 559                 state->filter_wpan_phy = nla_get_u64(tb[NL802154_ATTR_WPAN_DEV]) >> 32;
 560         if (tb[NL802154_ATTR_IFINDEX]) {
 561                 struct net_device *netdev;
 562                 struct cfg802154_registered_device *rdev;
 563                 int ifidx = nla_get_u32(tb[NL802154_ATTR_IFINDEX]);
 564
 565                 netdev = __dev_get_by_index(&init_net, ifidx);
 566                 if (!netdev)
 567                         return -ENODEV;
 568                 if (netdev->ieee802154_ptr) {
 569                         rdev = wpan_phy_to_rdev(
 570                                         netdev->ieee802154_ptr->wpan_phy);
 571                         state->filter_wpan_phy = rdev->wpan_phy_idx;
 572                 }
 573         }
 574
 575         return 0;
 576 }
 577
 578 static int
 579 nl802154_dump_wpan_phy(struct sk_buff *skb, struct netlink_callback *cb)
 580 {
 581         int idx = 0, ret;
 582         struct nl802154_dump_wpan_phy_state *state = (void *)cb->args[0];
 583         struct cfg802154_registered_device *rdev;
 584
 585         rtnl_lock();
 586         if (!state) {
 587                 state = kzalloc(sizeof(*state), GFP_KERNEL);
 588                 if (!state) {
 589                         rtnl_unlock();
 590                         return -ENOMEM;
 591                 }
 592                 state->filter_wpan_phy = -1;
 593                 ret = nl802154_dump_wpan_phy_parse(skb, cb, state);
 594                 if (ret) {
 595                         kfree(state);
 596                         rtnl_unlock();
 597                         return ret;
 598                 }
 599                 cb->args[0] = (long)state;
 600         }
 601
 602         list_for_each_entry(rdev, &cfg802154_rdev_list, list) {
 603                 if (!net_eq(wpan_phy_net(&rdev->wpan_phy), sock_net(skb->sk)))
 604                         continue;
 605                 if (++idx <= state->start)
 606                         continue;
 607                 if (state->filter_wpan_phy != -1 &&
 608                     state->filter_wpan_phy != rdev->wpan_phy_idx)
 609                         continue;
 610                 /* attempt to fit multiple wpan_phy data chunks into the skb */
 611                 ret = nl802154_send_wpan_phy(rdev,
 612                                              NL802154_CMD_NEW_WPAN_PHY,
 613                                              skb,
 614                                              NETLINK_CB(cb->skb).portid,
 615                                              cb->nlh->nlmsg_seq, NLM_F_MULTI);
 616                 if (ret < 0) {
 617                         if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
 618                             !skb->len && cb->min_dump_alloc < 4096) {
 619                                 cb->min_dump_alloc = 4096;
 620                                 rtnl_unlock();
 621                                 return 1;
 622                         }
 623                         idx--;
 624                         break;
 625                 }
 626                 break;
 627         }
 628         rtnl_unlock();
 629
 630         state->start = idx;
 631
 632         return skb->len;
 633 }
 634
 635 static int nl802154_dump_wpan_phy_done(struct netlink_callback *cb)
 636 {
 637         kfree((void *)cb->args[0]);
 638         return 0;
 639 }
 640
 641 static int nl802154_get_wpan_phy(struct sk_buff *skb, struct genl_info *info)
 642 {
 643         struct sk_buff *msg;
 644         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 645
 646         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 647         if (!msg)
 648                 return -ENOMEM;
 649
 650         if (nl802154_send_wpan_phy(rdev, NL802154_CMD_NEW_WPAN_PHY, msg,
 651                                    info->snd_portid, info->snd_seq, 0) < 0) {
 652                 nlmsg_free(msg);
 653                 return -ENOBUFS;
 654         }
 655
 656         return genlmsg_reply(msg, info);
 657 }
 658
 659 static inline u64 wpan_dev_id(struct wpan_dev *wpan_dev)
 660 {
 661         return (u64)wpan_dev->identifier |
 662                ((u64)wpan_phy_to_rdev(wpan_dev->wpan_phy)->wpan_phy_idx << 32);
 663 }
 664
 665 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
 666 #include <net/ieee802154_netdev.h>
 667
 668 static int
 669 ieee802154_llsec_send_key_id(struct sk_buff *msg,
 670                              const struct ieee802154_llsec_key_id *desc)
 671 {
 672         struct nlattr *nl_dev_addr;
 673
 674         if (nla_put_u32(msg, NL802154_KEY_ID_ATTR_MODE, desc->mode))
 675                 return -ENOBUFS;
 676
 677         switch (desc->mode) {
 678         case NL802154_KEY_ID_MODE_IMPLICIT:
 679                 nl_dev_addr = nla_nest_start_noflag(msg,
 680                                                     NL802154_KEY_ID_ATTR_IMPLICIT);
 681                 if (!nl_dev_addr)
 682                         return -ENOBUFS;
 683
 684                 if (nla_put_le16(msg, NL802154_DEV_ADDR_ATTR_PAN_ID,
 685                                  desc->device_addr.pan_id) ||
 686                     nla_put_u32(msg,  NL802154_DEV_ADDR_ATTR_MODE,
 687                                 desc->device_addr.mode))
 688                         return -ENOBUFS;
 689
 690                 switch (desc->device_addr.mode) {
 691                 case NL802154_DEV_ADDR_SHORT:
 692                         if (nla_put_le16(msg, NL802154_DEV_ADDR_ATTR_SHORT,
 693                                          desc->device_addr.short_addr))
 694                                 return -ENOBUFS;
 695                         break;
 696                 case NL802154_DEV_ADDR_EXTENDED:
 697                         if (nla_put_le64(msg, NL802154_DEV_ADDR_ATTR_EXTENDED,
 698                                          desc->device_addr.extended_addr,
 699                                          NL802154_DEV_ADDR_ATTR_PAD))
 700                                 return -ENOBUFS;
 701                         break;
 702                 default:
 703                         /* userspace should handle unknown */
 704                         break;
 705                 }
 706
 707                 nla_nest_end(msg, nl_dev_addr);
 708                 break;
 709         case NL802154_KEY_ID_MODE_INDEX:
 710                 break;
 711         case NL802154_KEY_ID_MODE_INDEX_SHORT:
 712                 /* TODO renmae short_source? */
 713                 if (nla_put_le32(msg, NL802154_KEY_ID_ATTR_SOURCE_SHORT,
 714                                  desc->short_source))
 715                         return -ENOBUFS;
 716                 break;
 717         case NL802154_KEY_ID_MODE_INDEX_EXTENDED:
 718                 if (nla_put_le64(msg, NL802154_KEY_ID_ATTR_SOURCE_EXTENDED,
 719                                  desc->extended_source,
 720                                  NL802154_KEY_ID_ATTR_PAD))
 721                         return -ENOBUFS;
 722                 break;
 723         default:
 724                 /* userspace should handle unknown */
 725                 break;
 726         }
 727
 728         /* TODO key_id to key_idx ? Check naming */
 729         if (desc->mode != NL802154_KEY_ID_MODE_IMPLICIT) {
 730                 if (nla_put_u8(msg, NL802154_KEY_ID_ATTR_INDEX, desc->id))
 731                         return -ENOBUFS;
 732         }
 733
 734         return 0;
 735 }
 736
 737 static int nl802154_get_llsec_params(struct sk_buff *msg,
 738                                      struct cfg802154_registered_device *rdev,
 739                                      struct wpan_dev *wpan_dev)
 740 {
 741         struct nlattr *nl_key_id;
 742         struct ieee802154_llsec_params params;
 743         int ret;
 744
 745         ret = rdev_get_llsec_params(rdev, wpan_dev, &params);
 746         if (ret < 0)
 747                 return ret;
 748
 749         if (nla_put_u8(msg, NL802154_ATTR_SEC_ENABLED, params.enabled) ||
 750             nla_put_u32(msg, NL802154_ATTR_SEC_OUT_LEVEL, params.out_level) ||
 751             nla_put_be32(msg, NL802154_ATTR_SEC_FRAME_COUNTER,
 752                          params.frame_counter))
 753                 return -ENOBUFS;
 754
 755         nl_key_id = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_OUT_KEY_ID);
 756         if (!nl_key_id)
 757                 return -ENOBUFS;
 758
 759         ret = ieee802154_llsec_send_key_id(msg, &params.out_key);
 760         if (ret < 0)
 761                 return ret;
 762
 763         nla_nest_end(msg, nl_key_id);
 764
 765         return 0;
 766 }
 767 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
 768
 769 static int
 770 nl802154_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
 771                     struct cfg802154_registered_device *rdev,
 772                     struct wpan_dev *wpan_dev)
 773 {
 774         struct net_device *dev = wpan_dev->netdev;
 775         void *hdr;
 776
 777         hdr = nl802154hdr_put(msg, portid, seq, flags,
 778                               NL802154_CMD_NEW_INTERFACE);
 779         if (!hdr)
 780                 return -1;
 781
 782         if (dev &&
 783             (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex) ||
 784              nla_put_string(msg, NL802154_ATTR_IFNAME, dev->name)))
 785                 goto nla_put_failure;
 786
 787         if (nla_put_u32(msg, NL802154_ATTR_WPAN_PHY, rdev->wpan_phy_idx) ||
 788             nla_put_u32(msg, NL802154_ATTR_IFTYPE, wpan_dev->iftype) ||
 789             nla_put_u64_64bit(msg, NL802154_ATTR_WPAN_DEV,
 790                               wpan_dev_id(wpan_dev), NL802154_ATTR_PAD) ||
 791             nla_put_u32(msg, NL802154_ATTR_GENERATION,
 792                         rdev->devlist_generation ^
 793                         (cfg802154_rdev_list_generation << 2)))
 794                 goto nla_put_failure;
 795
 796         /* address settings */
 797         if (nla_put_le64(msg, NL802154_ATTR_EXTENDED_ADDR,
 798                          wpan_dev->extended_addr,
 799                          NL802154_ATTR_PAD) ||
 800             nla_put_le16(msg, NL802154_ATTR_SHORT_ADDR,
 801                          wpan_dev->short_addr) ||
 802             nla_put_le16(msg, NL802154_ATTR_PAN_ID, wpan_dev->pan_id))
 803                 goto nla_put_failure;
 804
 805         /* ARET handling */
 806         if (nla_put_s8(msg, NL802154_ATTR_MAX_FRAME_RETRIES,
 807                        wpan_dev->frame_retries) ||
 808             nla_put_u8(msg, NL802154_ATTR_MAX_BE, wpan_dev->max_be) ||
 809             nla_put_u8(msg, NL802154_ATTR_MAX_CSMA_BACKOFFS,
 810                        wpan_dev->csma_retries) ||
 811             nla_put_u8(msg, NL802154_ATTR_MIN_BE, wpan_dev->min_be))
 812                 goto nla_put_failure;
 813
 814         /* listen before transmit */
 815         if (nla_put_u8(msg, NL802154_ATTR_LBT_MODE, wpan_dev->lbt))
 816                 goto nla_put_failure;
 817
 818         /* ackreq default behaviour */
 819         if (nla_put_u8(msg, NL802154_ATTR_ACKREQ_DEFAULT, wpan_dev->ackreq))
 820                 goto nla_put_failure;
 821
 822 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
 823         if (nl802154_get_llsec_params(msg, rdev, wpan_dev) < 0)
 824                 goto nla_put_failure;
 825 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
 826
 827         genlmsg_end(msg, hdr);
 828         return 0;
 829
 830 nla_put_failure:
 831         genlmsg_cancel(msg, hdr);
 832         return -EMSGSIZE;
 833 }
 834
 835 static int
 836 nl802154_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
 837 {
 838         int wp_idx = 0;
 839         int if_idx = 0;
 840         int wp_start = cb->args[0];
 841         int if_start = cb->args[1];
 842         struct cfg802154_registered_device *rdev;
 843         struct wpan_dev *wpan_dev;
 844
 845         rtnl_lock();
 846         list_for_each_entry(rdev, &cfg802154_rdev_list, list) {
 847                 if (!net_eq(wpan_phy_net(&rdev->wpan_phy), sock_net(skb->sk)))
 848                         continue;
 849                 if (wp_idx < wp_start) {
 850                         wp_idx++;
 851                         continue;
 852                 }
 853                 if_idx = 0;
 854
 855                 list_for_each_entry(wpan_dev, &rdev->wpan_dev_list, list) {
 856                         if (if_idx < if_start) {
 857                                 if_idx++;
 858                                 continue;
 859                         }
 860                         if (nl802154_send_iface(skb, NETLINK_CB(cb->skb).portid,
 861                                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
 862                                                 rdev, wpan_dev) < 0) {
 863                                 goto out;
 864                         }
 865                         if_idx++;
 866                 }
 867
 868                 wp_idx++;
 869         }
 870 out:
 871         rtnl_unlock();
 872
 873         cb->args[0] = wp_idx;
 874         cb->args[1] = if_idx;
 875
 876         return skb->len;
 877 }
 878
 879 static int nl802154_get_interface(struct sk_buff *skb, struct genl_info *info)
 880 {
 881         struct sk_buff *msg;
 882         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 883         struct wpan_dev *wdev = info->user_ptr[1];
 884
 885         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 886         if (!msg)
 887                 return -ENOMEM;
 888
 889         if (nl802154_send_iface(msg, info->snd_portid, info->snd_seq, 0,
 890                                 rdev, wdev) < 0) {
 891                 nlmsg_free(msg);
 892                 return -ENOBUFS;
 893         }
 894
 895         return genlmsg_reply(msg, info);
 896 }
 897
 898 static int nl802154_new_interface(struct sk_buff *skb, struct genl_info *info)
 899 {
 900         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 901         enum nl802154_iftype type = NL802154_IFTYPE_UNSPEC;
 902         __le64 extended_addr = cpu_to_le64(0x0000000000000000ULL);
 903
 904         /* TODO avoid failing a new interface
 905          * creation due to pending removal?
 906          */
 907
 908         if (!info->attrs[NL802154_ATTR_IFNAME])
 909                 return -EINVAL;
 910
 911         if (info->attrs[NL802154_ATTR_IFTYPE]) {
 912                 type = nla_get_u32(info->attrs[NL802154_ATTR_IFTYPE]);
 913                 if (type > NL802154_IFTYPE_MAX ||
 914                     !(rdev->wpan_phy.supported.iftypes & BIT(type)))
 915                         return -EINVAL;
 916         }
 917
 918         if (info->attrs[NL802154_ATTR_EXTENDED_ADDR])
 919                 extended_addr = nla_get_le64(info->attrs[NL802154_ATTR_EXTENDED_ADDR]);
 920
 921         if (!rdev->ops->add_virtual_intf)
 922                 return -EOPNOTSUPP;
 923
 924         return rdev_add_virtual_intf(rdev,
 925                                      nla_data(info->attrs[NL802154_ATTR_IFNAME]),
 926                                      NET_NAME_USER, type, extended_addr);
 927 }
 928
 929 static int nl802154_del_interface(struct sk_buff *skb, struct genl_info *info)
 930 {
 931         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 932         struct wpan_dev *wpan_dev = info->user_ptr[1];
 933
 934         if (!rdev->ops->del_virtual_intf)
 935                 return -EOPNOTSUPP;
 936
 937         /* If we remove a wpan device without a netdev then clear
 938          * user_ptr[1] so that nl802154_post_doit won't dereference it
 939          * to check if it needs to do dev_put(). Otherwise it crashes
 940          * since the wpan_dev has been freed, unlike with a netdev where
 941          * we need the dev_put() for the netdev to really be freed.
 942          */
 943         if (!wpan_dev->netdev)
 944                 info->user_ptr[1] = NULL;
 945
 946         return rdev_del_virtual_intf(rdev, wpan_dev);
 947 }
 948
 949 static int nl802154_set_channel(struct sk_buff *skb, struct genl_info *info)
 950 {
 951         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 952         u8 channel, page;
 953
 954         if (!info->attrs[NL802154_ATTR_PAGE] ||
 955             !info->attrs[NL802154_ATTR_CHANNEL])
 956                 return -EINVAL;
 957
 958         page = nla_get_u8(info->attrs[NL802154_ATTR_PAGE]);
 959         channel = nla_get_u8(info->attrs[NL802154_ATTR_CHANNEL]);
 960
 961         /* check 802.15.4 constraints */
 962         if (page > IEEE802154_MAX_PAGE || channel > IEEE802154_MAX_CHANNEL ||
 963             !(rdev->wpan_phy.supported.channels[page] & BIT(channel)))
 964                 return -EINVAL;
 965
 966         return rdev_set_channel(rdev, page, channel);
 967 }
 968
 969 static int nl802154_set_cca_mode(struct sk_buff *skb, struct genl_info *info)
 970 {
 971         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 972         struct wpan_phy_cca cca;
 973
 974         if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE))
 975                 return -EOPNOTSUPP;
 976
 977         if (!info->attrs[NL802154_ATTR_CCA_MODE])
 978                 return -EINVAL;
 979
 980         cca.mode = nla_get_u32(info->attrs[NL802154_ATTR_CCA_MODE]);
 981         /* checking 802.15.4 constraints */
 982         if (cca.mode < NL802154_CCA_ENERGY ||
 983             cca.mode > NL802154_CCA_ATTR_MAX ||
 984             !(rdev->wpan_phy.supported.cca_modes & BIT(cca.mode)))
 985                 return -EINVAL;
 986
 987         if (cca.mode == NL802154_CCA_ENERGY_CARRIER) {
 988                 if (!info->attrs[NL802154_ATTR_CCA_OPT])
 989                         return -EINVAL;
 990
 991                 cca.opt = nla_get_u32(info->attrs[NL802154_ATTR_CCA_OPT]);
 992                 if (cca.opt > NL802154_CCA_OPT_ATTR_MAX ||
 993                     !(rdev->wpan_phy.supported.cca_opts & BIT(cca.opt)))
 994                         return -EINVAL;
 995         }
 996
 997         return rdev_set_cca_mode(rdev, &cca);
 998 }
 999
1000 static int nl802154_set_cca_ed_level(struct sk_buff *skb, struct genl_info *info)
1001 {
1002         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1003         s32 ed_level;
1004         int i;
1005
1006         if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL))
1007                 return -EOPNOTSUPP;
1008
1009         if (!info->attrs[NL802154_ATTR_CCA_ED_LEVEL])
1010                 return -EINVAL;
1011
1012         ed_level = nla_get_s32(info->attrs[NL802154_ATTR_CCA_ED_LEVEL]);
1013
1014         for (i = 0; i < rdev->wpan_phy.supported.cca_ed_levels_size; i++) {
1015                 if (ed_level == rdev->wpan_phy.supported.cca_ed_levels[i])
1016                         return rdev_set_cca_ed_level(rdev, ed_level);
1017         }
1018
1019         return -EINVAL;
1020 }
1021
1022 static int nl802154_set_tx_power(struct sk_buff *skb, struct genl_info *info)
1023 {
1024         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1025         s32 power;
1026         int i;
1027
1028         if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER))
1029                 return -EOPNOTSUPP;
1030
1031         if (!info->attrs[NL802154_ATTR_TX_POWER])
1032                 return -EINVAL;
1033
1034         power = nla_get_s32(info->attrs[NL802154_ATTR_TX_POWER]);
1035
1036         for (i = 0; i < rdev->wpan_phy.supported.tx_powers_size; i++) {
1037                 if (power == rdev->wpan_phy.supported.tx_powers[i])
1038                         return rdev_set_tx_power(rdev, power);
1039         }
1040
1041         return -EINVAL;
1042 }
1043
1044 static int nl802154_set_pan_id(struct sk_buff *skb, struct genl_info *info)
1045 {
1046         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1047         struct net_device *dev = info->user_ptr[1];
1048         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1049         __le16 pan_id;
1050
1051         /* conflict here while tx/rx calls */
1052         if (netif_running(dev))
1053                 return -EBUSY;
1054
1055         if (wpan_dev->lowpan_dev) {
1056                 if (netif_running(wpan_dev->lowpan_dev))
1057                         return -EBUSY;
1058         }
1059
1060         /* don't change address fields on monitor */
1061         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR ||
1062             !info->attrs[NL802154_ATTR_PAN_ID])
1063                 return -EINVAL;
1064
1065         pan_id = nla_get_le16(info->attrs[NL802154_ATTR_PAN_ID]);
1066
1067         /* TODO
1068          * I am not sure about to check here on broadcast pan_id.
1069          * Broadcast is a valid setting, comment from 802.15.4:
1070          * If this value is 0xffff, the device is not associated.
1071          *
1072          * This could useful to simple deassociate an device.
1073          */
1074         if (pan_id == cpu_to_le16(IEEE802154_PAN_ID_BROADCAST))
1075                 return -EINVAL;
1076
1077         return rdev_set_pan_id(rdev, wpan_dev, pan_id);
1078 }
1079
1080 static int nl802154_set_short_addr(struct sk_buff *skb, struct genl_info *info)
1081 {
1082         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1083         struct net_device *dev = info->user_ptr[1];
1084         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1085         __le16 short_addr;
1086
1087         /* conflict here while tx/rx calls */
1088         if (netif_running(dev))
1089                 return -EBUSY;
1090
1091         if (wpan_dev->lowpan_dev) {
1092                 if (netif_running(wpan_dev->lowpan_dev))
1093                         return -EBUSY;
1094         }
1095
1096         /* don't change address fields on monitor */
1097         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR ||
1098             !info->attrs[NL802154_ATTR_SHORT_ADDR])
1099                 return -EINVAL;
1100
1101         short_addr = nla_get_le16(info->attrs[NL802154_ATTR_SHORT_ADDR]);
1102
1103         /* TODO
1104          * I am not sure about to check here on broadcast short_addr.
1105          * Broadcast is a valid setting, comment from 802.15.4:
1106          * A value of 0xfffe indicates that the device has
1107          * associated but has not been allocated an address. A
1108          * value of 0xffff indicates that the device does not
1109          * have a short address.
1110          *
1111          * I think we should allow to set these settings but
1112          * don't allow to allow socket communication with it.
1113          */
1114         if (short_addr == cpu_to_le16(IEEE802154_ADDR_SHORT_UNSPEC) ||
1115             short_addr == cpu_to_le16(IEEE802154_ADDR_SHORT_BROADCAST))
1116                 return -EINVAL;
1117
1118         return rdev_set_short_addr(rdev, wpan_dev, short_addr);
1119 }
1120
1121 static int
1122 nl802154_set_backoff_exponent(struct sk_buff *skb, struct genl_info *info)
1123 {
1124         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1125         struct net_device *dev = info->user_ptr[1];
1126         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1127         u8 min_be, max_be;
1128
1129         /* should be set on netif open inside phy settings */
1130         if (netif_running(dev))
1131                 return -EBUSY;
1132
1133         if (!info->attrs[NL802154_ATTR_MIN_BE] ||
1134             !info->attrs[NL802154_ATTR_MAX_BE])
1135                 return -EINVAL;
1136
1137         min_be = nla_get_u8(info->attrs[NL802154_ATTR_MIN_BE]);
1138         max_be = nla_get_u8(info->attrs[NL802154_ATTR_MAX_BE]);
1139
1140         /* check 802.15.4 constraints */
1141         if (min_be < rdev->wpan_phy.supported.min_minbe ||
1142             min_be > rdev->wpan_phy.supported.max_minbe ||
1143             max_be < rdev->wpan_phy.supported.min_maxbe ||
1144             max_be > rdev->wpan_phy.supported.max_maxbe ||
1145             min_be > max_be)
1146                 return -EINVAL;
1147
1148         return rdev_set_backoff_exponent(rdev, wpan_dev, min_be, max_be);
1149 }
1150
1151 static int
1152 nl802154_set_max_csma_backoffs(struct sk_buff *skb, struct genl_info *info)
1153 {
1154         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1155         struct net_device *dev = info->user_ptr[1];
1156         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1157         u8 max_csma_backoffs;
1158
1159         /* conflict here while other running iface settings */
1160         if (netif_running(dev))
1161                 return -EBUSY;
1162
1163         if (!info->attrs[NL802154_ATTR_MAX_CSMA_BACKOFFS])
1164                 return -EINVAL;
1165
1166         max_csma_backoffs = nla_get_u8(
1167                         info->attrs[NL802154_ATTR_MAX_CSMA_BACKOFFS]);
1168
1169         /* check 802.15.4 constraints */
1170         if (max_csma_backoffs < rdev->wpan_phy.supported.min_csma_backoffs ||
1171             max_csma_backoffs > rdev->wpan_phy.supported.max_csma_backoffs)
1172                 return -EINVAL;
1173
1174         return rdev_set_max_csma_backoffs(rdev, wpan_dev, max_csma_backoffs);
1175 }
1176
1177 static int
1178 nl802154_set_max_frame_retries(struct sk_buff *skb, struct genl_info *info)
1179 {
1180         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1181         struct net_device *dev = info->user_ptr[1];
1182         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1183         s8 max_frame_retries;
1184
1185         if (netif_running(dev))
1186                 return -EBUSY;
1187
1188         if (!info->attrs[NL802154_ATTR_MAX_FRAME_RETRIES])
1189                 return -EINVAL;
1190
1191         max_frame_retries = nla_get_s8(
1192                         info->attrs[NL802154_ATTR_MAX_FRAME_RETRIES]);
1193
1194         /* check 802.15.4 constraints */
1195         if (max_frame_retries < rdev->wpan_phy.supported.min_frame_retries ||
1196             max_frame_retries > rdev->wpan_phy.supported.max_frame_retries)
1197                 return -EINVAL;
1198
1199         return rdev_set_max_frame_retries(rdev, wpan_dev, max_frame_retries);
1200 }
1201
1202 static int nl802154_set_lbt_mode(struct sk_buff *skb, struct genl_info *info)
1203 {
1204         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1205         struct net_device *dev = info->user_ptr[1];
1206         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1207         int mode;
1208
1209         if (netif_running(dev))
1210                 return -EBUSY;
1211
1212         if (!info->attrs[NL802154_ATTR_LBT_MODE])
1213                 return -EINVAL;
1214
1215         mode = nla_get_u8(info->attrs[NL802154_ATTR_LBT_MODE]);
1216
1217         if (mode != 0 && mode != 1)
1218                 return -EINVAL;
1219
1220         if (!wpan_phy_supported_bool(mode, rdev->wpan_phy.supported.lbt))
1221                 return -EINVAL;
1222
1223         return rdev_set_lbt_mode(rdev, wpan_dev, mode);
1224 }
1225
1226 static int
1227 nl802154_set_ackreq_default(struct sk_buff *skb, struct genl_info *info)
1228 {
1229         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1230         struct net_device *dev = info->user_ptr[1];
1231         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1232         int ackreq;
1233
1234         if (netif_running(dev))
1235                 return -EBUSY;
1236
1237         if (!info->attrs[NL802154_ATTR_ACKREQ_DEFAULT])
1238                 return -EINVAL;
1239
1240         ackreq = nla_get_u8(info->attrs[NL802154_ATTR_ACKREQ_DEFAULT]);
1241
1242         if (ackreq != 0 && ackreq != 1)
1243                 return -EINVAL;
1244
1245         return rdev_set_ackreq_default(rdev, wpan_dev, ackreq);
1246 }
1247
1248 static int nl802154_wpan_phy_netns(struct sk_buff *skb, struct genl_info *info)
1249 {
1250         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1251         struct net *net;
1252         int err;
1253
1254         if (info->attrs[NL802154_ATTR_PID]) {
1255                 u32 pid = nla_get_u32(info->attrs[NL802154_ATTR_PID]);
1256
1257                 net = get_net_ns_by_pid(pid);
1258         } else if (info->attrs[NL802154_ATTR_NETNS_FD]) {
1259                 u32 fd = nla_get_u32(info->attrs[NL802154_ATTR_NETNS_FD]);
1260
1261                 net = get_net_ns_by_fd(fd);
1262         } else {
1263                 return -EINVAL;
1264         }
1265
1266         if (IS_ERR(net))
1267                 return PTR_ERR(net);
1268
1269         err = 0;
1270
1271         /* check if anything to do */
1272         if (!net_eq(wpan_phy_net(&rdev->wpan_phy), net))
1273                 err = cfg802154_switch_netns(rdev, net);
1274
1275         put_net(net);
1276         return err;
1277 }
1278
1279 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
1280 static const struct nla_policy nl802154_dev_addr_policy[NL802154_DEV_ADDR_ATTR_MAX + 1] = {
1281         [NL802154_DEV_ADDR_ATTR_PAN_ID] = { .type = NLA_U16 },
1282         [NL802154_DEV_ADDR_ATTR_MODE] = { .type = NLA_U32 },
1283         [NL802154_DEV_ADDR_ATTR_SHORT] = { .type = NLA_U16 },
1284         [NL802154_DEV_ADDR_ATTR_EXTENDED] = { .type = NLA_U64 },
1285 };
1286
1287 static int
1288 ieee802154_llsec_parse_dev_addr(struct nlattr *nla,
1289                                 struct ieee802154_addr *addr)
1290 {
1291         struct nlattr *attrs[NL802154_DEV_ADDR_ATTR_MAX + 1];
1292
1293         if (!nla || nla_parse_nested_deprecated(attrs, NL802154_DEV_ADDR_ATTR_MAX, nla, nl802154_dev_addr_policy, NULL))
1294                 return -EINVAL;
1295
1296         if (!attrs[NL802154_DEV_ADDR_ATTR_PAN_ID] ||
1297             !attrs[NL802154_DEV_ADDR_ATTR_MODE] ||
1298             !(attrs[NL802154_DEV_ADDR_ATTR_SHORT] ||
1299               attrs[NL802154_DEV_ADDR_ATTR_EXTENDED]))
1300                 return -EINVAL;
1301
1302         addr->pan_id = nla_get_le16(attrs[NL802154_DEV_ADDR_ATTR_PAN_ID]);
1303         addr->mode = nla_get_u32(attrs[NL802154_DEV_ADDR_ATTR_MODE]);
1304         switch (addr->mode) {
1305         case NL802154_DEV_ADDR_SHORT:
1306                 addr->short_addr = nla_get_le16(attrs[NL802154_DEV_ADDR_ATTR_SHORT]);
1307                 break;
1308         case NL802154_DEV_ADDR_EXTENDED:
1309                 addr->extended_addr = nla_get_le64(attrs[NL802154_DEV_ADDR_ATTR_EXTENDED]);
1310                 break;
1311         default:
1312                 return -EINVAL;
1313         }
1314
1315         return 0;
1316 }
1317
1318 static const struct nla_policy nl802154_key_id_policy[NL802154_KEY_ID_ATTR_MAX + 1] = {
1319         [NL802154_KEY_ID_ATTR_MODE] = { .type = NLA_U32 },
1320         [NL802154_KEY_ID_ATTR_INDEX] = { .type = NLA_U8 },
1321         [NL802154_KEY_ID_ATTR_IMPLICIT] = { .type = NLA_NESTED },
1322         [NL802154_KEY_ID_ATTR_SOURCE_SHORT] = { .type = NLA_U32 },
1323         [NL802154_KEY_ID_ATTR_SOURCE_EXTENDED] = { .type = NLA_U64 },
1324 };
1325
1326 static int
1327 ieee802154_llsec_parse_key_id(struct nlattr *nla,
1328                               struct ieee802154_llsec_key_id *desc)
1329 {
1330         struct nlattr *attrs[NL802154_KEY_ID_ATTR_MAX + 1];
1331
1332         if (!nla || nla_parse_nested_deprecated(attrs, NL802154_KEY_ID_ATTR_MAX, nla, nl802154_key_id_policy, NULL))
1333                 return -EINVAL;
1334
1335         if (!attrs[NL802154_KEY_ID_ATTR_MODE])
1336                 return -EINVAL;
1337
1338         desc->mode = nla_get_u32(attrs[NL802154_KEY_ID_ATTR_MODE]);
1339         switch (desc->mode) {
1340         case NL802154_KEY_ID_MODE_IMPLICIT:
1341                 if (!attrs[NL802154_KEY_ID_ATTR_IMPLICIT])
1342                         return -EINVAL;
1343
1344                 if (ieee802154_llsec_parse_dev_addr(attrs[NL802154_KEY_ID_ATTR_IMPLICIT],
1345                                                     &desc->device_addr) < 0)
1346                         return -EINVAL;
1347                 break;
1348         case NL802154_KEY_ID_MODE_INDEX:
1349                 break;
1350         case NL802154_KEY_ID_MODE_INDEX_SHORT:
1351                 if (!attrs[NL802154_KEY_ID_ATTR_SOURCE_SHORT])
1352                         return -EINVAL;
1353
1354                 desc->short_source = nla_get_le32(attrs[NL802154_KEY_ID_ATTR_SOURCE_SHORT]);
1355                 break;
1356         case NL802154_KEY_ID_MODE_INDEX_EXTENDED:
1357                 if (!attrs[NL802154_KEY_ID_ATTR_SOURCE_EXTENDED])
1358                         return -EINVAL;
1359
1360                 desc->extended_source = nla_get_le64(attrs[NL802154_KEY_ID_ATTR_SOURCE_EXTENDED]);
1361                 break;
1362         default:
1363                 return -EINVAL;
1364         }
1365
1366         if (desc->mode != NL802154_KEY_ID_MODE_IMPLICIT) {
1367                 if (!attrs[NL802154_KEY_ID_ATTR_INDEX])
1368                         return -EINVAL;
1369
1370                 /* TODO change id to idx */
1371                 desc->id = nla_get_u8(attrs[NL802154_KEY_ID_ATTR_INDEX]);
1372         }
1373
1374         return 0;
1375 }
1376
1377 static int nl802154_set_llsec_params(struct sk_buff *skb,
1378                                      struct genl_info *info)
1379 {
1380         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1381         struct net_device *dev = info->user_ptr[1];
1382         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1383         struct ieee802154_llsec_params params;
1384         u32 changed = 0;
1385         int ret;
1386
1387         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
1388                 return -EOPNOTSUPP;
1389
1390         if (info->attrs[NL802154_ATTR_SEC_ENABLED]) {
1391                 u8 enabled;
1392
1393                 enabled = nla_get_u8(info->attrs[NL802154_ATTR_SEC_ENABLED]);
1394                 if (enabled != 0 && enabled != 1)
1395                         return -EINVAL;
1396
1397                 params.enabled = nla_get_u8(info->attrs[NL802154_ATTR_SEC_ENABLED]);
1398                 changed |= IEEE802154_LLSEC_PARAM_ENABLED;
1399         }
1400
1401         if (info->attrs[NL802154_ATTR_SEC_OUT_KEY_ID]) {
1402                 ret = ieee802154_llsec_parse_key_id(info->attrs[NL802154_ATTR_SEC_OUT_KEY_ID],
1403                                                     &params.out_key);
1404                 if (ret < 0)
1405                         return ret;
1406
1407                 changed |= IEEE802154_LLSEC_PARAM_OUT_KEY;
1408         }
1409
1410         if (info->attrs[NL802154_ATTR_SEC_OUT_LEVEL]) {
1411                 params.out_level = nla_get_u32(info->attrs[NL802154_ATTR_SEC_OUT_LEVEL]);
1412                 if (params.out_level > NL802154_SECLEVEL_MAX)
1413                         return -EINVAL;
1414
1415                 changed |= IEEE802154_LLSEC_PARAM_OUT_LEVEL;
1416         }
1417
1418         if (info->attrs[NL802154_ATTR_SEC_FRAME_COUNTER]) {
1419                 params.frame_counter = nla_get_be32(info->attrs[NL802154_ATTR_SEC_FRAME_COUNTER]);
1420                 changed |= IEEE802154_LLSEC_PARAM_FRAME_COUNTER;
1421         }
1422
1423         return rdev_set_llsec_params(rdev, wpan_dev, &params, changed);
1424 }
1425
1426 static int nl802154_send_key(struct sk_buff *msg, u32 cmd, u32 portid,
1427                              u32 seq, int flags,
1428                              struct cfg802154_registered_device *rdev,
1429                              struct net_device *dev,
1430                              const struct ieee802154_llsec_key_entry *key)
1431 {
1432         void *hdr;
1433         u32 commands[NL802154_CMD_FRAME_NR_IDS / 32];
1434         struct nlattr *nl_key, *nl_key_id;
1435
1436         hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
1437         if (!hdr)
1438                 return -1;
1439
1440         if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex))
1441                 goto nla_put_failure;
1442
1443         nl_key = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_KEY);
1444         if (!nl_key)
1445                 goto nla_put_failure;
1446
1447         nl_key_id = nla_nest_start_noflag(msg, NL802154_KEY_ATTR_ID);
1448         if (!nl_key_id)
1449                 goto nla_put_failure;
1450
1451         if (ieee802154_llsec_send_key_id(msg, &key->id) < 0)
1452                 goto nla_put_failure;
1453
1454         nla_nest_end(msg, nl_key_id);
1455
1456         if (nla_put_u8(msg, NL802154_KEY_ATTR_USAGE_FRAMES,
1457                        key->key->frame_types))
1458                 goto nla_put_failure;
1459
1460         if (key->key->frame_types & BIT(NL802154_FRAME_CMD)) {
1461                 /* TODO for each nested */
1462                 memset(commands, 0, sizeof(commands));
1463                 commands[7] = key->key->cmd_frame_ids;
1464                 if (nla_put(msg, NL802154_KEY_ATTR_USAGE_CMDS,
1465                             sizeof(commands), commands))
1466                         goto nla_put_failure;
1467         }
1468
1469         if (nla_put(msg, NL802154_KEY_ATTR_BYTES, NL802154_KEY_SIZE,
1470                     key->key->key))
1471                 goto nla_put_failure;
1472
1473         nla_nest_end(msg, nl_key);
1474         genlmsg_end(msg, hdr);
1475
1476         return 0;
1477
1478 nla_put_failure:
1479         genlmsg_cancel(msg, hdr);
1480         return -EMSGSIZE;
1481 }
1482
1483 static int
1484 nl802154_dump_llsec_key(struct sk_buff *skb, struct netlink_callback *cb)
1485 {
1486         struct cfg802154_registered_device *rdev = NULL;
1487         struct ieee802154_llsec_key_entry *key;
1488         struct ieee802154_llsec_table *table;
1489         struct wpan_dev *wpan_dev;
1490         int err;
1491
1492         err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev);
1493         if (err)
1494                 return err;
1495
1496         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) {
1497                 err = skb->len;
1498                 goto out_err;
1499         }
1500
1501         if (!wpan_dev->netdev) {
1502                 err = -EINVAL;
1503                 goto out_err;
1504         }
1505
1506         rdev_lock_llsec_table(rdev, wpan_dev);
1507         rdev_get_llsec_table(rdev, wpan_dev, &table);
1508
1509         /* TODO make it like station dump */
1510         if (cb->args[2])
1511                 goto out;
1512
1513         list_for_each_entry(key, &table->keys, list) {
1514                 if (nl802154_send_key(skb, NL802154_CMD_NEW_SEC_KEY,
1515                                       NETLINK_CB(cb->skb).portid,
1516                                       cb->nlh->nlmsg_seq, NLM_F_MULTI,
1517                                       rdev, wpan_dev->netdev, key) < 0) {
1518                         /* TODO */
1519                         err = -EIO;
1520                         rdev_unlock_llsec_table(rdev, wpan_dev);
1521                         goto out_err;
1522                 }
1523         }
1524
1525         cb->args[2] = 1;
1526
1527 out:
1528         rdev_unlock_llsec_table(rdev, wpan_dev);
1529         err = skb->len;
1530 out_err:
1531         nl802154_finish_wpan_dev_dump(rdev);
1532
1533         return err;
1534 }
1535
1536 static const struct nla_policy nl802154_key_policy[NL802154_KEY_ATTR_MAX + 1] = {
1537         [NL802154_KEY_ATTR_ID] = { NLA_NESTED },
1538         /* TODO handle it as for_each_nested and NLA_FLAG? */
1539         [NL802154_KEY_ATTR_USAGE_FRAMES] = { NLA_U8 },
1540         /* TODO handle it as for_each_nested, not static array? */
1541         [NL802154_KEY_ATTR_USAGE_CMDS] = { .len = NL802154_CMD_FRAME_NR_IDS / 8 },
1542         [NL802154_KEY_ATTR_BYTES] = { .len = NL802154_KEY_SIZE },
1543 };
1544
1545 static int nl802154_add_llsec_key(struct sk_buff *skb, struct genl_info *info)
1546 {
1547         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1548         struct net_device *dev = info->user_ptr[1];
1549         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1550         struct nlattr *attrs[NL802154_KEY_ATTR_MAX + 1];
1551         struct ieee802154_llsec_key key = { };
1552         struct ieee802154_llsec_key_id id = { };
1553         u32 commands[NL802154_CMD_FRAME_NR_IDS / 32] = { };
1554
1555         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
1556                 return -EOPNOTSUPP;
1557
1558         if (!info->attrs[NL802154_ATTR_SEC_KEY] ||
1559             nla_parse_nested_deprecated(attrs, NL802154_KEY_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_KEY], nl802154_key_policy, info->extack))
1560                 return -EINVAL;
1561
1562         if (!attrs[NL802154_KEY_ATTR_USAGE_FRAMES] ||
1563             !attrs[NL802154_KEY_ATTR_BYTES])
1564                 return -EINVAL;
1565
1566         if (ieee802154_llsec_parse_key_id(attrs[NL802154_KEY_ATTR_ID], &id) < 0)
1567                 return -ENOBUFS;
1568
1569         key.frame_types = nla_get_u8(attrs[NL802154_KEY_ATTR_USAGE_FRAMES]);
1570         if (key.frame_types > BIT(NL802154_FRAME_MAX) ||
1571             ((key.frame_types & BIT(NL802154_FRAME_CMD)) &&
1572              !attrs[NL802154_KEY_ATTR_USAGE_CMDS]))
1573                 return -EINVAL;
1574
1575         if (attrs[NL802154_KEY_ATTR_USAGE_CMDS]) {
1576                 /* TODO for each nested */
1577                 nla_memcpy(commands, attrs[NL802154_KEY_ATTR_USAGE_CMDS],
1578                            NL802154_CMD_FRAME_NR_IDS / 8);
1579
1580                 /* TODO understand the -EINVAL logic here? last condition */
1581                 if (commands[0] || commands[1] || commands[2] || commands[3] ||
1582                     commands[4] || commands[5] || commands[6] ||
1583                     commands[7] > BIT(NL802154_CMD_FRAME_MAX))
1584                         return -EINVAL;
1585
1586                 key.cmd_frame_ids = commands[7];
1587         } else {
1588                 key.cmd_frame_ids = 0;
1589         }
1590
1591         nla_memcpy(key.key, attrs[NL802154_KEY_ATTR_BYTES], NL802154_KEY_SIZE);
1592
1593         if (ieee802154_llsec_parse_key_id(attrs[NL802154_KEY_ATTR_ID], &id) < 0)
1594                 return -ENOBUFS;
1595
1596         return rdev_add_llsec_key(rdev, wpan_dev, &id, &key);
1597 }
1598
1599 static int nl802154_del_llsec_key(struct sk_buff *skb, struct genl_info *info)
1600 {
1601         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1602         struct net_device *dev = info->user_ptr[1];
1603         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1604         struct nlattr *attrs[NL802154_KEY_ATTR_MAX + 1];
1605         struct ieee802154_llsec_key_id id;
1606
1607         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
1608                 return -EOPNOTSUPP;
1609
1610         if (!info->attrs[NL802154_ATTR_SEC_KEY] ||
1611             nla_parse_nested_deprecated(attrs, NL802154_KEY_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_KEY], nl802154_key_policy, info->extack))
1612                 return -EINVAL;
1613
1614         if (ieee802154_llsec_parse_key_id(attrs[NL802154_KEY_ATTR_ID], &id) < 0)
1615                 return -ENOBUFS;
1616
1617         return rdev_del_llsec_key(rdev, wpan_dev, &id);
1618 }
1619
1620 static int nl802154_send_device(struct sk_buff *msg, u32 cmd, u32 portid,
1621                                 u32 seq, int flags,
1622                                 struct cfg802154_registered_device *rdev,
1623                                 struct net_device *dev,
1624                                 const struct ieee802154_llsec_device *dev_desc)
1625 {
1626         void *hdr;
1627         struct nlattr *nl_device;
1628
1629         hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
1630         if (!hdr)
1631                 return -1;
1632
1633         if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex))
1634                 goto nla_put_failure;
1635
1636         nl_device = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_DEVICE);
1637         if (!nl_device)
1638                 goto nla_put_failure;
1639
1640         if (nla_put_u32(msg, NL802154_DEV_ATTR_FRAME_COUNTER,
1641                         dev_desc->frame_counter) ||
1642             nla_put_le16(msg, NL802154_DEV_ATTR_PAN_ID, dev_desc->pan_id) ||
1643             nla_put_le16(msg, NL802154_DEV_ATTR_SHORT_ADDR,
1644                          dev_desc->short_addr) ||
1645             nla_put_le64(msg, NL802154_DEV_ATTR_EXTENDED_ADDR,
1646                          dev_desc->hwaddr, NL802154_DEV_ATTR_PAD) ||
1647             nla_put_u8(msg, NL802154_DEV_ATTR_SECLEVEL_EXEMPT,
1648                        dev_desc->seclevel_exempt) ||
1649             nla_put_u32(msg, NL802154_DEV_ATTR_KEY_MODE, dev_desc->key_mode))
1650                 goto nla_put_failure;
1651
1652         nla_nest_end(msg, nl_device);
1653         genlmsg_end(msg, hdr);
1654
1655         return 0;
1656
1657 nla_put_failure:
1658         genlmsg_cancel(msg, hdr);
1659         return -EMSGSIZE;
1660 }
1661
1662 static int
1663 nl802154_dump_llsec_dev(struct sk_buff *skb, struct netlink_callback *cb)
1664 {
1665         struct cfg802154_registered_device *rdev = NULL;
1666         struct ieee802154_llsec_device *dev;
1667         struct ieee802154_llsec_table *table;
1668         struct wpan_dev *wpan_dev;
1669         int err;
1670
1671         err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev);
1672         if (err)
1673                 return err;
1674
1675         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) {
1676                 err = skb->len;
1677                 goto out_err;
1678         }
1679
1680         if (!wpan_dev->netdev) {
1681                 err = -EINVAL;
1682                 goto out_err;
1683         }
1684
1685         rdev_lock_llsec_table(rdev, wpan_dev);
1686         rdev_get_llsec_table(rdev, wpan_dev, &table);
1687
1688         /* TODO make it like station dump */
1689         if (cb->args[2])
1690                 goto out;
1691
1692         list_for_each_entry(dev, &table->devices, list) {
1693                 if (nl802154_send_device(skb, NL802154_CMD_NEW_SEC_LEVEL,
1694                                          NETLINK_CB(cb->skb).portid,
1695                                          cb->nlh->nlmsg_seq, NLM_F_MULTI,
1696                                          rdev, wpan_dev->netdev, dev) < 0) {
1697                         /* TODO */
1698                         err = -EIO;
1699                         rdev_unlock_llsec_table(rdev, wpan_dev);
1700                         goto out_err;
1701                 }
1702         }
1703
1704         cb->args[2] = 1;
1705
1706 out:
1707         rdev_unlock_llsec_table(rdev, wpan_dev);
1708         err = skb->len;
1709 out_err:
1710         nl802154_finish_wpan_dev_dump(rdev);
1711
1712         return err;
1713 }
1714
1715 static const struct nla_policy nl802154_dev_policy[NL802154_DEV_ATTR_MAX + 1] = {
1716         [NL802154_DEV_ATTR_FRAME_COUNTER] = { NLA_U32 },
1717         [NL802154_DEV_ATTR_PAN_ID] = { .type = NLA_U16 },
1718         [NL802154_DEV_ATTR_SHORT_ADDR] = { .type = NLA_U16 },
1719         [NL802154_DEV_ATTR_EXTENDED_ADDR] = { .type = NLA_U64 },
1720         [NL802154_DEV_ATTR_SECLEVEL_EXEMPT] = { NLA_U8 },
1721         [NL802154_DEV_ATTR_KEY_MODE] = { NLA_U32 },
1722 };
1723
1724 static int
1725 ieee802154_llsec_parse_device(struct nlattr *nla,
1726                               struct ieee802154_llsec_device *dev)
1727 {
1728         struct nlattr *attrs[NL802154_DEV_ATTR_MAX + 1];
1729
1730         if (!nla || nla_parse_nested_deprecated(attrs, NL802154_DEV_ATTR_MAX, nla, nl802154_dev_policy, NULL))
1731                 return -EINVAL;
1732
1733         memset(dev, 0, sizeof(*dev));
1734
1735         if (!attrs[NL802154_DEV_ATTR_FRAME_COUNTER] ||
1736             !attrs[NL802154_DEV_ATTR_PAN_ID] ||
1737             !attrs[NL802154_DEV_ATTR_SHORT_ADDR] ||
1738             !attrs[NL802154_DEV_ATTR_EXTENDED_ADDR] ||
1739             !attrs[NL802154_DEV_ATTR_SECLEVEL_EXEMPT] ||
1740             !attrs[NL802154_DEV_ATTR_KEY_MODE])
1741                 return -EINVAL;
1742
1743         /* TODO be32 */
1744         dev->frame_counter = nla_get_u32(attrs[NL802154_DEV_ATTR_FRAME_COUNTER]);
1745         dev->pan_id = nla_get_le16(attrs[NL802154_DEV_ATTR_PAN_ID]);
1746         dev->short_addr = nla_get_le16(attrs[NL802154_DEV_ATTR_SHORT_ADDR]);
1747         /* TODO rename hwaddr to extended_addr */
1748         dev->hwaddr = nla_get_le64(attrs[NL802154_DEV_ATTR_EXTENDED_ADDR]);
1749         dev->seclevel_exempt = nla_get_u8(attrs[NL802154_DEV_ATTR_SECLEVEL_EXEMPT]);
1750         dev->key_mode = nla_get_u32(attrs[NL802154_DEV_ATTR_KEY_MODE]);
1751
1752         if (dev->key_mode > NL802154_DEVKEY_MAX ||
1753             (dev->seclevel_exempt != 0 && dev->seclevel_exempt != 1))
1754                 return -EINVAL;
1755
1756         return 0;
1757 }
1758
1759 static int nl802154_add_llsec_dev(struct sk_buff *skb, struct genl_info *info)
1760 {
1761         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1762         struct net_device *dev = info->user_ptr[1];
1763         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1764         struct ieee802154_llsec_device dev_desc;
1765
1766         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
1767                 return -EOPNOTSUPP;
1768
1769         if (ieee802154_llsec_parse_device(info->attrs[NL802154_ATTR_SEC_DEVICE],
1770                                           &dev_desc) < 0)
1771                 return -EINVAL;
1772
1773         return rdev_add_device(rdev, wpan_dev, &dev_desc);
1774 }
1775
1776 static int nl802154_del_llsec_dev(struct sk_buff *skb, struct genl_info *info)
1777 {
1778         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1779         struct net_device *dev = info->user_ptr[1];
1780         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1781         struct nlattr *attrs[NL802154_DEV_ATTR_MAX + 1];
1782         __le64 extended_addr;
1783
1784         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
1785                 return -EOPNOTSUPP;
1786
1787         if (!info->attrs[NL802154_ATTR_SEC_DEVICE] ||
1788             nla_parse_nested_deprecated(attrs, NL802154_DEV_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_DEVICE], nl802154_dev_policy, info->extack))
1789                 return -EINVAL;
1790
1791         if (!attrs[NL802154_DEV_ATTR_EXTENDED_ADDR])
1792                 return -EINVAL;
1793
1794         extended_addr = nla_get_le64(attrs[NL802154_DEV_ATTR_EXTENDED_ADDR]);
1795         return rdev_del_device(rdev, wpan_dev, extended_addr);
1796 }
1797
1798 static int nl802154_send_devkey(struct sk_buff *msg, u32 cmd, u32 portid,
1799                                 u32 seq, int flags,
1800                                 struct cfg802154_registered_device *rdev,
1801                                 struct net_device *dev, __le64 extended_addr,
1802                                 const struct ieee802154_llsec_device_key *devkey)
1803 {
1804         void *hdr;
1805         struct nlattr *nl_devkey, *nl_key_id;
1806
1807         hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
1808         if (!hdr)
1809                 return -1;
1810
1811         if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex))
1812                 goto nla_put_failure;
1813
1814         nl_devkey = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_DEVKEY);
1815         if (!nl_devkey)
1816                 goto nla_put_failure;
1817
1818         if (nla_put_le64(msg, NL802154_DEVKEY_ATTR_EXTENDED_ADDR,
1819                          extended_addr, NL802154_DEVKEY_ATTR_PAD) ||
1820             nla_put_u32(msg, NL802154_DEVKEY_ATTR_FRAME_COUNTER,
1821                         devkey->frame_counter))
1822                 goto nla_put_failure;
1823
1824         nl_key_id = nla_nest_start_noflag(msg, NL802154_DEVKEY_ATTR_ID);
1825         if (!nl_key_id)
1826                 goto nla_put_failure;
1827
1828         if (ieee802154_llsec_send_key_id(msg, &devkey->key_id) < 0)
1829                 goto nla_put_failure;
1830
1831         nla_nest_end(msg, nl_key_id);
1832         nla_nest_end(msg, nl_devkey);
1833         genlmsg_end(msg, hdr);
1834
1835         return 0;
1836
1837 nla_put_failure:
1838         genlmsg_cancel(msg, hdr);
1839         return -EMSGSIZE;
1840 }
1841
1842 static int
1843 nl802154_dump_llsec_devkey(struct sk_buff *skb, struct netlink_callback *cb)
1844 {
1845         struct cfg802154_registered_device *rdev = NULL;
1846         struct ieee802154_llsec_device_key *kpos;
1847         struct ieee802154_llsec_device *dpos;
1848         struct ieee802154_llsec_table *table;
1849         struct wpan_dev *wpan_dev;
1850         int err;
1851
1852         err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev);
1853         if (err)
1854                 return err;
1855
1856         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) {
1857                 err = skb->len;
1858                 goto out_err;
1859         }
1860
1861         if (!wpan_dev->netdev) {
1862                 err = -EINVAL;
1863                 goto out_err;
1864         }
1865
1866         rdev_lock_llsec_table(rdev, wpan_dev);
1867         rdev_get_llsec_table(rdev, wpan_dev, &table);
1868
1869         /* TODO make it like station dump */
1870         if (cb->args[2])
1871                 goto out;
1872
1873         /* TODO look if remove devkey and do some nested attribute */
1874         list_for_each_entry(dpos, &table->devices, list) {
1875                 list_for_each_entry(kpos, &dpos->keys, list) {
1876                         if (nl802154_send_devkey(skb,
1877                                                  NL802154_CMD_NEW_SEC_LEVEL,
1878                                                  NETLINK_CB(cb->skb).portid,
1879                                                  cb->nlh->nlmsg_seq,
1880                                                  NLM_F_MULTI, rdev,
1881                                                  wpan_dev->netdev,
1882                                                  dpos->hwaddr,
1883                                                  kpos) < 0) {
1884                                 /* TODO */
1885                                 err = -EIO;
1886                                 rdev_unlock_llsec_table(rdev, wpan_dev);
1887                                 goto out_err;
1888                         }
1889                 }
1890         }
1891
1892         cb->args[2] = 1;
1893
1894 out:
1895         rdev_unlock_llsec_table(rdev, wpan_dev);
1896         err = skb->len;
1897 out_err:
1898         nl802154_finish_wpan_dev_dump(rdev);
1899
1900         return err;
1901 }
1902
1903 static const struct nla_policy nl802154_devkey_policy[NL802154_DEVKEY_ATTR_MAX + 1] = {
1904         [NL802154_DEVKEY_ATTR_FRAME_COUNTER] = { NLA_U32 },
1905         [NL802154_DEVKEY_ATTR_EXTENDED_ADDR] = { NLA_U64 },
1906         [NL802154_DEVKEY_ATTR_ID] = { NLA_NESTED },
1907 };
1908
1909 static int nl802154_add_llsec_devkey(struct sk_buff *skb, struct genl_info *info)
1910 {
1911         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1912         struct net_device *dev = info->user_ptr[1];
1913         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1914         struct nlattr *attrs[NL802154_DEVKEY_ATTR_MAX + 1];
1915         struct ieee802154_llsec_device_key key;
1916         __le64 extended_addr;
1917
1918         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
1919                 return -EOPNOTSUPP;
1920
1921         if (!info->attrs[NL802154_ATTR_SEC_DEVKEY] ||
1922             nla_parse_nested_deprecated(attrs, NL802154_DEVKEY_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_DEVKEY], nl802154_devkey_policy, info->extack) < 0)
1923                 return -EINVAL;
1924
1925         if (!attrs[NL802154_DEVKEY_ATTR_FRAME_COUNTER] ||
1926             !attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR])
1927                 return -EINVAL;
1928
1929         /* TODO change key.id ? */
1930         if (ieee802154_llsec_parse_key_id(attrs[NL802154_DEVKEY_ATTR_ID],
1931                                           &key.key_id) < 0)
1932                 return -ENOBUFS;
1933
1934         /* TODO be32 */
1935         key.frame_counter = nla_get_u32(attrs[NL802154_DEVKEY_ATTR_FRAME_COUNTER]);
1936         /* TODO change naming hwaddr -> extended_addr
1937          * check unique identifier short+pan OR extended_addr
1938          */
1939         extended_addr = nla_get_le64(attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR]);
1940         return rdev_add_devkey(rdev, wpan_dev, extended_addr, &key);
1941 }
1942
1943 static int nl802154_del_llsec_devkey(struct sk_buff *skb, struct genl_info *info)
1944 {
1945         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1946         struct net_device *dev = info->user_ptr[1];
1947         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1948         struct nlattr *attrs[NL802154_DEVKEY_ATTR_MAX + 1];
1949         struct ieee802154_llsec_device_key key;
1950         __le64 extended_addr;
1951
1952         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
1953                 return -EOPNOTSUPP;
1954
1955         if (!info->attrs[NL802154_ATTR_SEC_DEVKEY] ||
1956             nla_parse_nested_deprecated(attrs, NL802154_DEVKEY_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_DEVKEY], nl802154_devkey_policy, info->extack))
1957                 return -EINVAL;
1958
1959         if (!attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR])
1960                 return -EINVAL;
1961
1962         /* TODO change key.id ? */
1963         if (ieee802154_llsec_parse_key_id(attrs[NL802154_DEVKEY_ATTR_ID],
1964                                           &key.key_id) < 0)
1965                 return -ENOBUFS;
1966
1967         /* TODO change naming hwaddr -> extended_addr
1968          * check unique identifier short+pan OR extended_addr
1969          */
1970         extended_addr = nla_get_le64(attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR]);
1971         return rdev_del_devkey(rdev, wpan_dev, extended_addr, &key);
1972 }
1973
1974 static int nl802154_send_seclevel(struct sk_buff *msg, u32 cmd, u32 portid,
1975                                   u32 seq, int flags,
1976                                   struct cfg802154_registered_device *rdev,
1977                                   struct net_device *dev,
1978                                   const struct ieee802154_llsec_seclevel *sl)
1979 {
1980         void *hdr;
1981         struct nlattr *nl_seclevel;
1982
1983         hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
1984         if (!hdr)
1985                 return -1;
1986
1987         if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex))
1988                 goto nla_put_failure;
1989
1990         nl_seclevel = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_LEVEL);
1991         if (!nl_seclevel)
1992                 goto nla_put_failure;
1993
1994         if (nla_put_u32(msg, NL802154_SECLEVEL_ATTR_FRAME, sl->frame_type) ||
1995             nla_put_u32(msg, NL802154_SECLEVEL_ATTR_LEVELS, sl->sec_levels) ||
1996             nla_put_u8(msg, NL802154_SECLEVEL_ATTR_DEV_OVERRIDE,
1997                        sl->device_override))
1998                 goto nla_put_failure;
1999
2000         if (sl->frame_type == NL802154_FRAME_CMD) {
2001                 if (nla_put_u32(msg, NL802154_SECLEVEL_ATTR_CMD_FRAME,
2002                                 sl->cmd_frame_id))
2003                         goto nla_put_failure;
2004         }
2005
2006         nla_nest_end(msg, nl_seclevel);
2007         genlmsg_end(msg, hdr);
2008
2009         return 0;
2010
2011 nla_put_failure:
2012         genlmsg_cancel(msg, hdr);
2013         return -EMSGSIZE;
2014 }
2015
2016 static int
2017 nl802154_dump_llsec_seclevel(struct sk_buff *skb, struct netlink_callback *cb)
2018 {
2019         struct cfg802154_registered_device *rdev = NULL;
2020         struct ieee802154_llsec_seclevel *sl;
2021         struct ieee802154_llsec_table *table;
2022         struct wpan_dev *wpan_dev;
2023         int err;
2024
2025         err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev);
2026         if (err)
2027                 return err;
2028
2029         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) {
2030                 err = skb->len;
2031                 goto out_err;
2032         }
2033
2034         if (!wpan_dev->netdev) {
2035                 err = -EINVAL;
2036                 goto out_err;
2037         }
2038
2039         rdev_lock_llsec_table(rdev, wpan_dev);
2040         rdev_get_llsec_table(rdev, wpan_dev, &table);
2041
2042         /* TODO make it like station dump */
2043         if (cb->args[2])
2044                 goto out;
2045
2046         list_for_each_entry(sl, &table->security_levels, list) {
2047                 if (nl802154_send_seclevel(skb, NL802154_CMD_NEW_SEC_LEVEL,
2048                                            NETLINK_CB(cb->skb).portid,
2049                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
2050                                            rdev, wpan_dev->netdev, sl) < 0) {
2051                         /* TODO */
2052                         err = -EIO;
2053                         rdev_unlock_llsec_table(rdev, wpan_dev);
2054                         goto out_err;
2055                 }
2056         }
2057
2058         cb->args[2] = 1;
2059
2060 out:
2061         rdev_unlock_llsec_table(rdev, wpan_dev);
2062         err = skb->len;
2063 out_err:
2064         nl802154_finish_wpan_dev_dump(rdev);
2065
2066         return err;
2067 }
2068
2069 static const struct nla_policy nl802154_seclevel_policy[NL802154_SECLEVEL_ATTR_MAX + 1] = {
2070         [NL802154_SECLEVEL_ATTR_LEVELS] = { .type = NLA_U8 },
2071         [NL802154_SECLEVEL_ATTR_FRAME] = { .type = NLA_U32 },
2072         [NL802154_SECLEVEL_ATTR_CMD_FRAME] = { .type = NLA_U32 },
2073         [NL802154_SECLEVEL_ATTR_DEV_OVERRIDE] = { .type = NLA_U8 },
2074 };
2075
2076 static int
2077 llsec_parse_seclevel(struct nlattr *nla, struct ieee802154_llsec_seclevel *sl)
2078 {
2079         struct nlattr *attrs[NL802154_SECLEVEL_ATTR_MAX + 1];
2080
2081         if (!nla || nla_parse_nested_deprecated(attrs, NL802154_SECLEVEL_ATTR_MAX, nla, nl802154_seclevel_policy, NULL))
2082                 return -EINVAL;
2083
2084         memset(sl, 0, sizeof(*sl));
2085
2086         if (!attrs[NL802154_SECLEVEL_ATTR_LEVELS] ||
2087             !attrs[NL802154_SECLEVEL_ATTR_FRAME] ||
2088             !attrs[NL802154_SECLEVEL_ATTR_DEV_OVERRIDE])
2089                 return -EINVAL;
2090
2091         sl->sec_levels = nla_get_u8(attrs[NL802154_SECLEVEL_ATTR_LEVELS]);
2092         sl->frame_type = nla_get_u32(attrs[NL802154_SECLEVEL_ATTR_FRAME]);
2093         sl->device_override = nla_get_u8(attrs[NL802154_SECLEVEL_ATTR_DEV_OVERRIDE]);
2094         if (sl->frame_type > NL802154_FRAME_MAX ||
2095             (sl->device_override != 0 && sl->device_override != 1))
2096                 return -EINVAL;
2097
2098         if (sl->frame_type == NL802154_FRAME_CMD) {
2099                 if (!attrs[NL802154_SECLEVEL_ATTR_CMD_FRAME])
2100                         return -EINVAL;
2101
2102                 sl->cmd_frame_id = nla_get_u32(attrs[NL802154_SECLEVEL_ATTR_CMD_FRAME]);
2103                 if (sl->cmd_frame_id > NL802154_CMD_FRAME_MAX)
2104                         return -EINVAL;
2105         }
2106
2107         return 0;
2108 }
2109
2110 static int nl802154_add_llsec_seclevel(struct sk_buff *skb,
2111                                        struct genl_info *info)
2112 {
2113         struct cfg802154_registered_device *rdev = info->user_ptr[0];
2114         struct net_device *dev = info->user_ptr[1];
2115         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
2116         struct ieee802154_llsec_seclevel sl;
2117
2118         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
2119                 return -EOPNOTSUPP;
2120
2121         if (llsec_parse_seclevel(info->attrs[NL802154_ATTR_SEC_LEVEL],
2122                                  &sl) < 0)
2123                 return -EINVAL;
2124
2125         return rdev_add_seclevel(rdev, wpan_dev, &sl);
2126 }
2127
2128 static int nl802154_del_llsec_seclevel(struct sk_buff *skb,
2129                                        struct genl_info *info)
2130 {
2131         struct cfg802154_registered_device *rdev = info->user_ptr[0];
2132         struct net_device *dev = info->user_ptr[1];
2133         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
2134         struct ieee802154_llsec_seclevel sl;
2135
2136         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
2137                 return -EOPNOTSUPP;
2138
2139         if (!info->attrs[NL802154_ATTR_SEC_LEVEL] ||
2140             llsec_parse_seclevel(info->attrs[NL802154_ATTR_SEC_LEVEL],
2141                                  &sl) < 0)
2142                 return -EINVAL;
2143
2144         return rdev_del_seclevel(rdev, wpan_dev, &sl);
2145 }
2146 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
2147
2148 #define NL802154_FLAG_NEED_WPAN_PHY     0x01
2149 #define NL802154_FLAG_NEED_NETDEV       0x02
2150 #define NL802154_FLAG_NEED_RTNL         0x04
2151 #define NL802154_FLAG_CHECK_NETDEV_UP   0x08
2152 #define NL802154_FLAG_NEED_WPAN_DEV     0x10
2153
2154 static int nl802154_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
2155                              struct genl_info *info)
2156 {
2157         struct cfg802154_registered_device *rdev;
2158         struct wpan_dev *wpan_dev;
2159         struct net_device *dev;
2160         bool rtnl = ops->internal_flags & NL802154_FLAG_NEED_RTNL;
2161
2162         if (rtnl)
2163                 rtnl_lock();
2164
2165         if (ops->internal_flags & NL802154_FLAG_NEED_WPAN_PHY) {
2166                 rdev = cfg802154_get_dev_from_info(genl_info_net(info), info);
2167                 if (IS_ERR(rdev)) {
2168                         if (rtnl)
2169                                 rtnl_unlock();
2170                         return PTR_ERR(rdev);
2171                 }
2172                 info->user_ptr[0] = rdev;
2173         } else if (ops->internal_flags & NL802154_FLAG_NEED_NETDEV ||
2174                    ops->internal_flags & NL802154_FLAG_NEED_WPAN_DEV) {
2175                 ASSERT_RTNL();
2176                 wpan_dev = __cfg802154_wpan_dev_from_attrs(genl_info_net(info),
2177                                                            info->attrs);
2178                 if (IS_ERR(wpan_dev)) {
2179                         if (rtnl)
2180                                 rtnl_unlock();
2181                         return PTR_ERR(wpan_dev);
2182                 }
2183
2184                 dev = wpan_dev->netdev;
2185                 rdev = wpan_phy_to_rdev(wpan_dev->wpan_phy);
2186
2187                 if (ops->internal_flags & NL802154_FLAG_NEED_NETDEV) {
2188                         if (!dev) {
2189                                 if (rtnl)
2190                                         rtnl_unlock();
2191                                 return -EINVAL;
2192                         }
2193
2194                         info->user_ptr[1] = dev;
2195                 } else {
2196                         info->user_ptr[1] = wpan_dev;
2197                 }
2198
2199                 if (dev) {
2200                         if (ops->internal_flags & NL802154_FLAG_CHECK_NETDEV_UP &&
2201                             !netif_running(dev)) {
2202                                 if (rtnl)
2203                                         rtnl_unlock();
2204                                 return -ENETDOWN;
2205                         }
2206
2207                         dev_hold(dev);
2208                 }
2209
2210                 info->user_ptr[0] = rdev;
2211         }
2212
2213         return 0;
2214 }
2215
2216 static void nl802154_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
2217                                struct genl_info *info)
2218 {
2219         if (info->user_ptr[1]) {
2220                 if (ops->internal_flags & NL802154_FLAG_NEED_WPAN_DEV) {
2221                         struct wpan_dev *wpan_dev = info->user_ptr[1];
2222
2223                         if (wpan_dev->netdev)
2224                                 dev_put(wpan_dev->netdev);
2225                 } else {
2226                         dev_put(info->user_ptr[1]);
2227                 }
2228         }
2229
2230         if (ops->internal_flags & NL802154_FLAG_NEED_RTNL)
2231                 rtnl_unlock();
2232 }
2233
2234 static const struct genl_ops nl802154_ops[] = {
2235         {
2236                 .cmd = NL802154_CMD_GET_WPAN_PHY,
2237                 .validate = GENL_DONT_VALIDATE_STRICT |
2238                             GENL_DONT_VALIDATE_DUMP_STRICT,
2239                 .doit = nl802154_get_wpan_phy,
2240                 .dumpit = nl802154_dump_wpan_phy,
2241                 .done = nl802154_dump_wpan_phy_done,
2242                 /* can be retrieved by unprivileged users */
2243                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2244                                   NL802154_FLAG_NEED_RTNL,
2245         },
2246         {
2247                 .cmd = NL802154_CMD_GET_INTERFACE,
2248                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2249                 .doit = nl802154_get_interface,
2250                 .dumpit = nl802154_dump_interface,
2251                 /* can be retrieved by unprivileged users */
2252                 .internal_flags = NL802154_FLAG_NEED_WPAN_DEV |
2253                                   NL802154_FLAG_NEED_RTNL,
2254         },
2255         {
2256                 .cmd = NL802154_CMD_NEW_INTERFACE,
2257                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2258                 .doit = nl802154_new_interface,
2259                 .flags = GENL_ADMIN_PERM,
2260                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2261                                   NL802154_FLAG_NEED_RTNL,
2262         },
2263         {
2264                 .cmd = NL802154_CMD_DEL_INTERFACE,
2265                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2266                 .doit = nl802154_del_interface,
2267                 .flags = GENL_ADMIN_PERM,
2268                 .internal_flags = NL802154_FLAG_NEED_WPAN_DEV |
2269                                   NL802154_FLAG_NEED_RTNL,
2270         },
2271         {
2272                 .cmd = NL802154_CMD_SET_CHANNEL,
2273                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2274                 .doit = nl802154_set_channel,
2275                 .flags = GENL_ADMIN_PERM,
2276                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2277                                   NL802154_FLAG_NEED_RTNL,
2278         },
2279         {
2280                 .cmd = NL802154_CMD_SET_CCA_MODE,
2281                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2282                 .doit = nl802154_set_cca_mode,
2283                 .flags = GENL_ADMIN_PERM,
2284                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2285                                   NL802154_FLAG_NEED_RTNL,
2286         },
2287         {
2288                 .cmd = NL802154_CMD_SET_CCA_ED_LEVEL,
2289                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2290                 .doit = nl802154_set_cca_ed_level,
2291                 .flags = GENL_ADMIN_PERM,
2292                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2293                                   NL802154_FLAG_NEED_RTNL,
2294         },
2295         {
2296                 .cmd = NL802154_CMD_SET_TX_POWER,
2297                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2298                 .doit = nl802154_set_tx_power,
2299                 .flags = GENL_ADMIN_PERM,
2300                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2301                                   NL802154_FLAG_NEED_RTNL,
2302         },
2303         {
2304                 .cmd = NL802154_CMD_SET_WPAN_PHY_NETNS,
2305                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2306                 .doit = nl802154_wpan_phy_netns,
2307                 .flags = GENL_ADMIN_PERM,
2308                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2309                                   NL802154_FLAG_NEED_RTNL,
2310         },
2311         {
2312                 .cmd = NL802154_CMD_SET_PAN_ID,
2313                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2314                 .doit = nl802154_set_pan_id,
2315                 .flags = GENL_ADMIN_PERM,
2316                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2317                                   NL802154_FLAG_NEED_RTNL,
2318         },
2319         {
2320                 .cmd = NL802154_CMD_SET_SHORT_ADDR,
2321                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2322                 .doit = nl802154_set_short_addr,
2323                 .flags = GENL_ADMIN_PERM,
2324                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2325                                   NL802154_FLAG_NEED_RTNL,
2326         },
2327         {
2328                 .cmd = NL802154_CMD_SET_BACKOFF_EXPONENT,
2329                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2330                 .doit = nl802154_set_backoff_exponent,
2331                 .flags = GENL_ADMIN_PERM,
2332                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2333                                   NL802154_FLAG_NEED_RTNL,
2334         },
2335         {
2336                 .cmd = NL802154_CMD_SET_MAX_CSMA_BACKOFFS,
2337                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2338                 .doit = nl802154_set_max_csma_backoffs,
2339                 .flags = GENL_ADMIN_PERM,
2340                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2341                                   NL802154_FLAG_NEED_RTNL,
2342         },
2343         {
2344                 .cmd = NL802154_CMD_SET_MAX_FRAME_RETRIES,
2345                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2346                 .doit = nl802154_set_max_frame_retries,
2347                 .flags = GENL_ADMIN_PERM,
2348                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2349                                   NL802154_FLAG_NEED_RTNL,
2350         },
2351         {
2352                 .cmd = NL802154_CMD_SET_LBT_MODE,
2353                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2354                 .doit = nl802154_set_lbt_mode,
2355                 .flags = GENL_ADMIN_PERM,
2356                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2357                                   NL802154_FLAG_NEED_RTNL,
2358         },
2359         {
2360                 .cmd = NL802154_CMD_SET_ACKREQ_DEFAULT,
2361                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2362                 .doit = nl802154_set_ackreq_default,
2363                 .flags = GENL_ADMIN_PERM,
2364                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2365                                   NL802154_FLAG_NEED_RTNL,
2366         },
2367 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
2368         {
2369                 .cmd = NL802154_CMD_SET_SEC_PARAMS,
2370                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2371                 .doit = nl802154_set_llsec_params,
2372                 .flags = GENL_ADMIN_PERM,
2373                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2374                                   NL802154_FLAG_NEED_RTNL,
2375         },
2376         {
2377                 .cmd = NL802154_CMD_GET_SEC_KEY,
2378                 .validate = GENL_DONT_VALIDATE_STRICT |
2379                             GENL_DONT_VALIDATE_DUMP_STRICT,
2380                 /* TODO .doit by matching key id? */
2381                 .dumpit = nl802154_dump_llsec_key,
2382                 .flags = GENL_ADMIN_PERM,
2383                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2384                                   NL802154_FLAG_NEED_RTNL,
2385         },
2386         {
2387                 .cmd = NL802154_CMD_NEW_SEC_KEY,
2388                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2389                 .doit = nl802154_add_llsec_key,
2390                 .flags = GENL_ADMIN_PERM,
2391                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2392                                   NL802154_FLAG_NEED_RTNL,
2393         },
2394         {
2395                 .cmd = NL802154_CMD_DEL_SEC_KEY,
2396                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2397                 .doit = nl802154_del_llsec_key,
2398                 .flags = GENL_ADMIN_PERM,
2399                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2400                                   NL802154_FLAG_NEED_RTNL,
2401         },
2402         /* TODO unique identifier must short+pan OR extended_addr */
2403         {
2404                 .cmd = NL802154_CMD_GET_SEC_DEV,
2405                 .validate = GENL_DONT_VALIDATE_STRICT |
2406                             GENL_DONT_VALIDATE_DUMP_STRICT,
2407                 /* TODO .doit by matching extended_addr? */
2408                 .dumpit = nl802154_dump_llsec_dev,
2409                 .flags = GENL_ADMIN_PERM,
2410                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2411                                   NL802154_FLAG_NEED_RTNL,
2412         },
2413         {
2414                 .cmd = NL802154_CMD_NEW_SEC_DEV,
2415                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2416                 .doit = nl802154_add_llsec_dev,
2417                 .flags = GENL_ADMIN_PERM,
2418                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2419                                   NL802154_FLAG_NEED_RTNL,
2420         },
2421         {
2422                 .cmd = NL802154_CMD_DEL_SEC_DEV,
2423                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2424                 .doit = nl802154_del_llsec_dev,
2425                 .flags = GENL_ADMIN_PERM,
2426                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2427                                   NL802154_FLAG_NEED_RTNL,
2428         },
2429         /* TODO remove complete devkey, put it as nested? */
2430         {
2431                 .cmd = NL802154_CMD_GET_SEC_DEVKEY,
2432                 .validate = GENL_DONT_VALIDATE_STRICT |
2433                             GENL_DONT_VALIDATE_DUMP_STRICT,
2434                 /* TODO doit by matching ??? */
2435                 .dumpit = nl802154_dump_llsec_devkey,
2436                 .flags = GENL_ADMIN_PERM,
2437                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2438                                   NL802154_FLAG_NEED_RTNL,
2439         },
2440         {
2441                 .cmd = NL802154_CMD_NEW_SEC_DEVKEY,
2442                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2443                 .doit = nl802154_add_llsec_devkey,
2444                 .flags = GENL_ADMIN_PERM,
2445                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2446                                   NL802154_FLAG_NEED_RTNL,
2447         },
2448         {
2449                 .cmd = NL802154_CMD_DEL_SEC_DEVKEY,
2450                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2451                 .doit = nl802154_del_llsec_devkey,
2452                 .flags = GENL_ADMIN_PERM,
2453                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2454                                   NL802154_FLAG_NEED_RTNL,
2455         },
2456         {
2457                 .cmd = NL802154_CMD_GET_SEC_LEVEL,
2458                 .validate = GENL_DONT_VALIDATE_STRICT |
2459                             GENL_DONT_VALIDATE_DUMP_STRICT,
2460                 /* TODO .doit by matching frame_type? */
2461                 .dumpit = nl802154_dump_llsec_seclevel,
2462                 .flags = GENL_ADMIN_PERM,
2463                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2464                                   NL802154_FLAG_NEED_RTNL,
2465         },
2466         {
2467                 .cmd = NL802154_CMD_NEW_SEC_LEVEL,
2468                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2469                 .doit = nl802154_add_llsec_seclevel,
2470                 .flags = GENL_ADMIN_PERM,
2471                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2472                                   NL802154_FLAG_NEED_RTNL,
2473         },
2474         {
2475                 .cmd = NL802154_CMD_DEL_SEC_LEVEL,
2476                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2477                 /* TODO match frame_type only? */
2478                 .doit = nl802154_del_llsec_seclevel,
2479                 .flags = GENL_ADMIN_PERM,
2480                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2481                                   NL802154_FLAG_NEED_RTNL,
2482         },
2483 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
2484 };
2485
2486 static struct genl_family nl802154_fam __ro_after_init = {
2487         .name = NL802154_GENL_NAME,     /* have users key off the name instead */
2488         .hdrsize = 0,                   /* no private header */
2489         .version = 1,                   /* no particular meaning now */
2490         .maxattr = NL802154_ATTR_MAX,
2491         .policy = nl802154_policy,
2492         .netnsok = true,
2493         .pre_doit = nl802154_pre_doit,
2494         .post_doit = nl802154_post_doit,
2495         .module = THIS_MODULE,
2496         .ops = nl802154_ops,
2497         .n_ops = ARRAY_SIZE(nl802154_ops),
2498         .mcgrps = nl802154_mcgrps,
2499         .n_mcgrps = ARRAY_SIZE(nl802154_mcgrps),
2500 };
2501
2502 /* initialisation/exit functions */
2503 int __init nl802154_init(void)
2504 {
2505         return genl_register_family(&nl802154_fam);
2506 }
2507
2508 void nl802154_exit(void)
2509 {
2510         genl_unregister_family(&nl802154_fam);
2511 }