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 (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
 824                 goto out;
 825
 826         if (nl802154_get_llsec_params(msg, rdev, wpan_dev) < 0)
 827                 goto nla_put_failure;
 828
 829 out:
 830 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
 831
 832         genlmsg_end(msg, hdr);
 833         return 0;
 834
 835 nla_put_failure:
 836         genlmsg_cancel(msg, hdr);
 837         return -EMSGSIZE;
 838 }
 839
 840 static int
 841 nl802154_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
 842 {
 843         int wp_idx = 0;
 844         int if_idx = 0;
 845         int wp_start = cb->args[0];
 846         int if_start = cb->args[1];
 847         struct cfg802154_registered_device *rdev;
 848         struct wpan_dev *wpan_dev;
 849
 850         rtnl_lock();
 851         list_for_each_entry(rdev, &cfg802154_rdev_list, list) {
 852                 if (!net_eq(wpan_phy_net(&rdev->wpan_phy), sock_net(skb->sk)))
 853                         continue;
 854                 if (wp_idx < wp_start) {
 855                         wp_idx++;
 856                         continue;
 857                 }
 858                 if_idx = 0;
 859
 860                 list_for_each_entry(wpan_dev, &rdev->wpan_dev_list, list) {
 861                         if (if_idx < if_start) {
 862                                 if_idx++;
 863                                 continue;
 864                         }
 865                         if (nl802154_send_iface(skb, NETLINK_CB(cb->skb).portid,
 866                                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
 867                                                 rdev, wpan_dev) < 0) {
 868                                 goto out;
 869                         }
 870                         if_idx++;
 871                 }
 872
 873                 wp_idx++;
 874         }
 875 out:
 876         rtnl_unlock();
 877
 878         cb->args[0] = wp_idx;
 879         cb->args[1] = if_idx;
 880
 881         return skb->len;
 882 }
 883
 884 static int nl802154_get_interface(struct sk_buff *skb, struct genl_info *info)
 885 {
 886         struct sk_buff *msg;
 887         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 888         struct wpan_dev *wdev = info->user_ptr[1];
 889
 890         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 891         if (!msg)
 892                 return -ENOMEM;
 893
 894         if (nl802154_send_iface(msg, info->snd_portid, info->snd_seq, 0,
 895                                 rdev, wdev) < 0) {
 896                 nlmsg_free(msg);
 897                 return -ENOBUFS;
 898         }
 899
 900         return genlmsg_reply(msg, info);
 901 }
 902
 903 static int nl802154_new_interface(struct sk_buff *skb, struct genl_info *info)
 904 {
 905         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 906         enum nl802154_iftype type = NL802154_IFTYPE_UNSPEC;
 907         __le64 extended_addr = cpu_to_le64(0x0000000000000000ULL);
 908
 909         /* TODO avoid failing a new interface
 910          * creation due to pending removal?
 911          */
 912
 913         if (!info->attrs[NL802154_ATTR_IFNAME])
 914                 return -EINVAL;
 915
 916         if (info->attrs[NL802154_ATTR_IFTYPE]) {
 917                 type = nla_get_u32(info->attrs[NL802154_ATTR_IFTYPE]);
 918                 if (type > NL802154_IFTYPE_MAX ||
 919                     !(rdev->wpan_phy.supported.iftypes & BIT(type)))
 920                         return -EINVAL;
 921         }
 922
 923         if (info->attrs[NL802154_ATTR_EXTENDED_ADDR])
 924                 extended_addr = nla_get_le64(info->attrs[NL802154_ATTR_EXTENDED_ADDR]);
 925
 926         if (!rdev->ops->add_virtual_intf)
 927                 return -EOPNOTSUPP;
 928
 929         return rdev_add_virtual_intf(rdev,
 930                                      nla_data(info->attrs[NL802154_ATTR_IFNAME]),
 931                                      NET_NAME_USER, type, extended_addr);
 932 }
 933
 934 static int nl802154_del_interface(struct sk_buff *skb, struct genl_info *info)
 935 {
 936         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 937         struct wpan_dev *wpan_dev = info->user_ptr[1];
 938
 939         if (!rdev->ops->del_virtual_intf)
 940                 return -EOPNOTSUPP;
 941
 942         /* If we remove a wpan device without a netdev then clear
 943          * user_ptr[1] so that nl802154_post_doit won't dereference it
 944          * to check if it needs to do dev_put(). Otherwise it crashes
 945          * since the wpan_dev has been freed, unlike with a netdev where
 946          * we need the dev_put() for the netdev to really be freed.
 947          */
 948         if (!wpan_dev->netdev)
 949                 info->user_ptr[1] = NULL;
 950
 951         return rdev_del_virtual_intf(rdev, wpan_dev);
 952 }
 953
 954 static int nl802154_set_channel(struct sk_buff *skb, struct genl_info *info)
 955 {
 956         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 957         u8 channel, page;
 958
 959         if (!info->attrs[NL802154_ATTR_PAGE] ||
 960             !info->attrs[NL802154_ATTR_CHANNEL])
 961                 return -EINVAL;
 962
 963         page = nla_get_u8(info->attrs[NL802154_ATTR_PAGE]);
 964         channel = nla_get_u8(info->attrs[NL802154_ATTR_CHANNEL]);
 965
 966         /* check 802.15.4 constraints */
 967         if (page > IEEE802154_MAX_PAGE || channel > IEEE802154_MAX_CHANNEL ||
 968             !(rdev->wpan_phy.supported.channels[page] & BIT(channel)))
 969                 return -EINVAL;
 970
 971         return rdev_set_channel(rdev, page, channel);
 972 }
 973
 974 static int nl802154_set_cca_mode(struct sk_buff *skb, struct genl_info *info)
 975 {
 976         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 977         struct wpan_phy_cca cca;
 978
 979         if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE))
 980                 return -EOPNOTSUPP;
 981
 982         if (!info->attrs[NL802154_ATTR_CCA_MODE])
 983                 return -EINVAL;
 984
 985         cca.mode = nla_get_u32(info->attrs[NL802154_ATTR_CCA_MODE]);
 986         /* checking 802.15.4 constraints */
 987         if (cca.mode < NL802154_CCA_ENERGY ||
 988             cca.mode > NL802154_CCA_ATTR_MAX ||
 989             !(rdev->wpan_phy.supported.cca_modes & BIT(cca.mode)))
 990                 return -EINVAL;
 991
 992         if (cca.mode == NL802154_CCA_ENERGY_CARRIER) {
 993                 if (!info->attrs[NL802154_ATTR_CCA_OPT])
 994                         return -EINVAL;
 995
 996                 cca.opt = nla_get_u32(info->attrs[NL802154_ATTR_CCA_OPT]);
 997                 if (cca.opt > NL802154_CCA_OPT_ATTR_MAX ||
 998                     !(rdev->wpan_phy.supported.cca_opts & BIT(cca.opt)))
 999                         return -EINVAL;
1000         }
1001
1002         return rdev_set_cca_mode(rdev, &cca);
1003 }
1004
1005 static int nl802154_set_cca_ed_level(struct sk_buff *skb, struct genl_info *info)
1006 {
1007         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1008         s32 ed_level;
1009         int i;
1010
1011         if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL))
1012                 return -EOPNOTSUPP;
1013
1014         if (!info->attrs[NL802154_ATTR_CCA_ED_LEVEL])
1015                 return -EINVAL;
1016
1017         ed_level = nla_get_s32(info->attrs[NL802154_ATTR_CCA_ED_LEVEL]);
1018
1019         for (i = 0; i < rdev->wpan_phy.supported.cca_ed_levels_size; i++) {
1020                 if (ed_level == rdev->wpan_phy.supported.cca_ed_levels[i])
1021                         return rdev_set_cca_ed_level(rdev, ed_level);
1022         }
1023
1024         return -EINVAL;
1025 }
1026
1027 static int nl802154_set_tx_power(struct sk_buff *skb, struct genl_info *info)
1028 {
1029         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1030         s32 power;
1031         int i;
1032
1033         if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER))
1034                 return -EOPNOTSUPP;
1035
1036         if (!info->attrs[NL802154_ATTR_TX_POWER])
1037                 return -EINVAL;
1038
1039         power = nla_get_s32(info->attrs[NL802154_ATTR_TX_POWER]);
1040
1041         for (i = 0; i < rdev->wpan_phy.supported.tx_powers_size; i++) {
1042                 if (power == rdev->wpan_phy.supported.tx_powers[i])
1043                         return rdev_set_tx_power(rdev, power);
1044         }
1045
1046         return -EINVAL;
1047 }
1048
1049 static int nl802154_set_pan_id(struct sk_buff *skb, struct genl_info *info)
1050 {
1051         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1052         struct net_device *dev = info->user_ptr[1];
1053         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1054         __le16 pan_id;
1055
1056         /* conflict here while tx/rx calls */
1057         if (netif_running(dev))
1058                 return -EBUSY;
1059
1060         if (wpan_dev->lowpan_dev) {
1061                 if (netif_running(wpan_dev->lowpan_dev))
1062                         return -EBUSY;
1063         }
1064
1065         /* don't change address fields on monitor */
1066         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR ||
1067             !info->attrs[NL802154_ATTR_PAN_ID])
1068                 return -EINVAL;
1069
1070         pan_id = nla_get_le16(info->attrs[NL802154_ATTR_PAN_ID]);
1071
1072         /* TODO
1073          * I am not sure about to check here on broadcast pan_id.
1074          * Broadcast is a valid setting, comment from 802.15.4:
1075          * If this value is 0xffff, the device is not associated.
1076          *
1077          * This could useful to simple deassociate an device.
1078          */
1079         if (pan_id == cpu_to_le16(IEEE802154_PAN_ID_BROADCAST))
1080                 return -EINVAL;
1081
1082         return rdev_set_pan_id(rdev, wpan_dev, pan_id);
1083 }
1084
1085 static int nl802154_set_short_addr(struct sk_buff *skb, struct genl_info *info)
1086 {
1087         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1088         struct net_device *dev = info->user_ptr[1];
1089         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1090         __le16 short_addr;
1091
1092         /* conflict here while tx/rx calls */
1093         if (netif_running(dev))
1094                 return -EBUSY;
1095
1096         if (wpan_dev->lowpan_dev) {
1097                 if (netif_running(wpan_dev->lowpan_dev))
1098                         return -EBUSY;
1099         }
1100
1101         /* don't change address fields on monitor */
1102         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR ||
1103             !info->attrs[NL802154_ATTR_SHORT_ADDR])
1104                 return -EINVAL;
1105
1106         short_addr = nla_get_le16(info->attrs[NL802154_ATTR_SHORT_ADDR]);
1107
1108         /* TODO
1109          * I am not sure about to check here on broadcast short_addr.
1110          * Broadcast is a valid setting, comment from 802.15.4:
1111          * A value of 0xfffe indicates that the device has
1112          * associated but has not been allocated an address. A
1113          * value of 0xffff indicates that the device does not
1114          * have a short address.
1115          *
1116          * I think we should allow to set these settings but
1117          * don't allow to allow socket communication with it.
1118          */
1119         if (short_addr == cpu_to_le16(IEEE802154_ADDR_SHORT_UNSPEC) ||
1120             short_addr == cpu_to_le16(IEEE802154_ADDR_SHORT_BROADCAST))
1121                 return -EINVAL;
1122
1123         return rdev_set_short_addr(rdev, wpan_dev, short_addr);
1124 }
1125
1126 static int
1127 nl802154_set_backoff_exponent(struct sk_buff *skb, struct genl_info *info)
1128 {
1129         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1130         struct net_device *dev = info->user_ptr[1];
1131         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1132         u8 min_be, max_be;
1133
1134         /* should be set on netif open inside phy settings */
1135         if (netif_running(dev))
1136                 return -EBUSY;
1137
1138         if (!info->attrs[NL802154_ATTR_MIN_BE] ||
1139             !info->attrs[NL802154_ATTR_MAX_BE])
1140                 return -EINVAL;
1141
1142         min_be = nla_get_u8(info->attrs[NL802154_ATTR_MIN_BE]);
1143         max_be = nla_get_u8(info->attrs[NL802154_ATTR_MAX_BE]);
1144
1145         /* check 802.15.4 constraints */
1146         if (min_be < rdev->wpan_phy.supported.min_minbe ||
1147             min_be > rdev->wpan_phy.supported.max_minbe ||
1148             max_be < rdev->wpan_phy.supported.min_maxbe ||
1149             max_be > rdev->wpan_phy.supported.max_maxbe ||
1150             min_be > max_be)
1151                 return -EINVAL;
1152
1153         return rdev_set_backoff_exponent(rdev, wpan_dev, min_be, max_be);
1154 }
1155
1156 static int
1157 nl802154_set_max_csma_backoffs(struct sk_buff *skb, struct genl_info *info)
1158 {
1159         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1160         struct net_device *dev = info->user_ptr[1];
1161         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1162         u8 max_csma_backoffs;
1163
1164         /* conflict here while other running iface settings */
1165         if (netif_running(dev))
1166                 return -EBUSY;
1167
1168         if (!info->attrs[NL802154_ATTR_MAX_CSMA_BACKOFFS])
1169                 return -EINVAL;
1170
1171         max_csma_backoffs = nla_get_u8(
1172                         info->attrs[NL802154_ATTR_MAX_CSMA_BACKOFFS]);
1173
1174         /* check 802.15.4 constraints */
1175         if (max_csma_backoffs < rdev->wpan_phy.supported.min_csma_backoffs ||
1176             max_csma_backoffs > rdev->wpan_phy.supported.max_csma_backoffs)
1177                 return -EINVAL;
1178
1179         return rdev_set_max_csma_backoffs(rdev, wpan_dev, max_csma_backoffs);
1180 }
1181
1182 static int
1183 nl802154_set_max_frame_retries(struct sk_buff *skb, struct genl_info *info)
1184 {
1185         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1186         struct net_device *dev = info->user_ptr[1];
1187         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1188         s8 max_frame_retries;
1189
1190         if (netif_running(dev))
1191                 return -EBUSY;
1192
1193         if (!info->attrs[NL802154_ATTR_MAX_FRAME_RETRIES])
1194                 return -EINVAL;
1195
1196         max_frame_retries = nla_get_s8(
1197                         info->attrs[NL802154_ATTR_MAX_FRAME_RETRIES]);
1198
1199         /* check 802.15.4 constraints */
1200         if (max_frame_retries < rdev->wpan_phy.supported.min_frame_retries ||
1201             max_frame_retries > rdev->wpan_phy.supported.max_frame_retries)
1202                 return -EINVAL;
1203
1204         return rdev_set_max_frame_retries(rdev, wpan_dev, max_frame_retries);
1205 }
1206
1207 static int nl802154_set_lbt_mode(struct sk_buff *skb, struct genl_info *info)
1208 {
1209         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1210         struct net_device *dev = info->user_ptr[1];
1211         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1212         int mode;
1213
1214         if (netif_running(dev))
1215                 return -EBUSY;
1216
1217         if (!info->attrs[NL802154_ATTR_LBT_MODE])
1218                 return -EINVAL;
1219
1220         mode = nla_get_u8(info->attrs[NL802154_ATTR_LBT_MODE]);
1221
1222         if (mode != 0 && mode != 1)
1223                 return -EINVAL;
1224
1225         if (!wpan_phy_supported_bool(mode, rdev->wpan_phy.supported.lbt))
1226                 return -EINVAL;
1227
1228         return rdev_set_lbt_mode(rdev, wpan_dev, mode);
1229 }
1230
1231 static int
1232 nl802154_set_ackreq_default(struct sk_buff *skb, struct genl_info *info)
1233 {
1234         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1235         struct net_device *dev = info->user_ptr[1];
1236         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1237         int ackreq;
1238
1239         if (netif_running(dev))
1240                 return -EBUSY;
1241
1242         if (!info->attrs[NL802154_ATTR_ACKREQ_DEFAULT])
1243                 return -EINVAL;
1244
1245         ackreq = nla_get_u8(info->attrs[NL802154_ATTR_ACKREQ_DEFAULT]);
1246
1247         if (ackreq != 0 && ackreq != 1)
1248                 return -EINVAL;
1249
1250         return rdev_set_ackreq_default(rdev, wpan_dev, ackreq);
1251 }
1252
1253 static int nl802154_wpan_phy_netns(struct sk_buff *skb, struct genl_info *info)
1254 {
1255         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1256         struct net *net;
1257         int err;
1258
1259         if (info->attrs[NL802154_ATTR_PID]) {
1260                 u32 pid = nla_get_u32(info->attrs[NL802154_ATTR_PID]);
1261
1262                 net = get_net_ns_by_pid(pid);
1263         } else if (info->attrs[NL802154_ATTR_NETNS_FD]) {
1264                 u32 fd = nla_get_u32(info->attrs[NL802154_ATTR_NETNS_FD]);
1265
1266                 net = get_net_ns_by_fd(fd);
1267         } else {
1268                 return -EINVAL;
1269         }
1270
1271         if (IS_ERR(net))
1272                 return PTR_ERR(net);
1273
1274         err = 0;
1275
1276         /* check if anything to do */
1277         if (!net_eq(wpan_phy_net(&rdev->wpan_phy), net))
1278                 err = cfg802154_switch_netns(rdev, net);
1279
1280         put_net(net);
1281         return err;
1282 }
1283
1284 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
1285 static const struct nla_policy nl802154_dev_addr_policy[NL802154_DEV_ADDR_ATTR_MAX + 1] = {
1286         [NL802154_DEV_ADDR_ATTR_PAN_ID] = { .type = NLA_U16 },
1287         [NL802154_DEV_ADDR_ATTR_MODE] = { .type = NLA_U32 },
1288         [NL802154_DEV_ADDR_ATTR_SHORT] = { .type = NLA_U16 },
1289         [NL802154_DEV_ADDR_ATTR_EXTENDED] = { .type = NLA_U64 },
1290 };
1291
1292 static int
1293 ieee802154_llsec_parse_dev_addr(struct nlattr *nla,
1294                                 struct ieee802154_addr *addr)
1295 {
1296         struct nlattr *attrs[NL802154_DEV_ADDR_ATTR_MAX + 1];
1297
1298         if (!nla || nla_parse_nested_deprecated(attrs, NL802154_DEV_ADDR_ATTR_MAX, nla, nl802154_dev_addr_policy, NULL))
1299                 return -EINVAL;
1300
1301         if (!attrs[NL802154_DEV_ADDR_ATTR_PAN_ID] ||
1302             !attrs[NL802154_DEV_ADDR_ATTR_MODE] ||
1303             !(attrs[NL802154_DEV_ADDR_ATTR_SHORT] ||
1304               attrs[NL802154_DEV_ADDR_ATTR_EXTENDED]))
1305                 return -EINVAL;
1306
1307         addr->pan_id = nla_get_le16(attrs[NL802154_DEV_ADDR_ATTR_PAN_ID]);
1308         addr->mode = nla_get_u32(attrs[NL802154_DEV_ADDR_ATTR_MODE]);
1309         switch (addr->mode) {
1310         case NL802154_DEV_ADDR_SHORT:
1311                 addr->short_addr = nla_get_le16(attrs[NL802154_DEV_ADDR_ATTR_SHORT]);
1312                 break;
1313         case NL802154_DEV_ADDR_EXTENDED:
1314                 addr->extended_addr = nla_get_le64(attrs[NL802154_DEV_ADDR_ATTR_EXTENDED]);
1315                 break;
1316         default:
1317                 return -EINVAL;
1318         }
1319
1320         return 0;
1321 }
1322
1323 static const struct nla_policy nl802154_key_id_policy[NL802154_KEY_ID_ATTR_MAX + 1] = {
1324         [NL802154_KEY_ID_ATTR_MODE] = { .type = NLA_U32 },
1325         [NL802154_KEY_ID_ATTR_INDEX] = { .type = NLA_U8 },
1326         [NL802154_KEY_ID_ATTR_IMPLICIT] = { .type = NLA_NESTED },
1327         [NL802154_KEY_ID_ATTR_SOURCE_SHORT] = { .type = NLA_U32 },
1328         [NL802154_KEY_ID_ATTR_SOURCE_EXTENDED] = { .type = NLA_U64 },
1329 };
1330
1331 static int
1332 ieee802154_llsec_parse_key_id(struct nlattr *nla,
1333                               struct ieee802154_llsec_key_id *desc)
1334 {
1335         struct nlattr *attrs[NL802154_KEY_ID_ATTR_MAX + 1];
1336
1337         if (!nla || nla_parse_nested_deprecated(attrs, NL802154_KEY_ID_ATTR_MAX, nla, nl802154_key_id_policy, NULL))
1338                 return -EINVAL;
1339
1340         if (!attrs[NL802154_KEY_ID_ATTR_MODE])
1341                 return -EINVAL;
1342
1343         desc->mode = nla_get_u32(attrs[NL802154_KEY_ID_ATTR_MODE]);
1344         switch (desc->mode) {
1345         case NL802154_KEY_ID_MODE_IMPLICIT:
1346                 if (!attrs[NL802154_KEY_ID_ATTR_IMPLICIT])
1347                         return -EINVAL;
1348
1349                 if (ieee802154_llsec_parse_dev_addr(attrs[NL802154_KEY_ID_ATTR_IMPLICIT],
1350                                                     &desc->device_addr) < 0)
1351                         return -EINVAL;
1352                 break;
1353         case NL802154_KEY_ID_MODE_INDEX:
1354                 break;
1355         case NL802154_KEY_ID_MODE_INDEX_SHORT:
1356                 if (!attrs[NL802154_KEY_ID_ATTR_SOURCE_SHORT])
1357                         return -EINVAL;
1358
1359                 desc->short_source = nla_get_le32(attrs[NL802154_KEY_ID_ATTR_SOURCE_SHORT]);
1360                 break;
1361         case NL802154_KEY_ID_MODE_INDEX_EXTENDED:
1362                 if (!attrs[NL802154_KEY_ID_ATTR_SOURCE_EXTENDED])
1363                         return -EINVAL;
1364
1365                 desc->extended_source = nla_get_le64(attrs[NL802154_KEY_ID_ATTR_SOURCE_EXTENDED]);
1366                 break;
1367         default:
1368                 return -EINVAL;
1369         }
1370
1371         if (desc->mode != NL802154_KEY_ID_MODE_IMPLICIT) {
1372                 if (!attrs[NL802154_KEY_ID_ATTR_INDEX])
1373                         return -EINVAL;
1374
1375                 /* TODO change id to idx */
1376                 desc->id = nla_get_u8(attrs[NL802154_KEY_ID_ATTR_INDEX]);
1377         }
1378
1379         return 0;
1380 }
1381
1382 static int nl802154_set_llsec_params(struct sk_buff *skb,
1383                                      struct genl_info *info)
1384 {
1385         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1386         struct net_device *dev = info->user_ptr[1];
1387         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1388         struct ieee802154_llsec_params params;
1389         u32 changed = 0;
1390         int ret;
1391
1392         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
1393                 return -EOPNOTSUPP;
1394
1395         if (info->attrs[NL802154_ATTR_SEC_ENABLED]) {
1396                 u8 enabled;
1397
1398                 enabled = nla_get_u8(info->attrs[NL802154_ATTR_SEC_ENABLED]);
1399                 if (enabled != 0 && enabled != 1)
1400                         return -EINVAL;
1401
1402                 params.enabled = nla_get_u8(info->attrs[NL802154_ATTR_SEC_ENABLED]);
1403                 changed |= IEEE802154_LLSEC_PARAM_ENABLED;
1404         }
1405
1406         if (info->attrs[NL802154_ATTR_SEC_OUT_KEY_ID]) {
1407                 ret = ieee802154_llsec_parse_key_id(info->attrs[NL802154_ATTR_SEC_OUT_KEY_ID],
1408                                                     &params.out_key);
1409                 if (ret < 0)
1410                         return ret;
1411
1412                 changed |= IEEE802154_LLSEC_PARAM_OUT_KEY;
1413         }
1414
1415         if (info->attrs[NL802154_ATTR_SEC_OUT_LEVEL]) {
1416                 params.out_level = nla_get_u32(info->attrs[NL802154_ATTR_SEC_OUT_LEVEL]);
1417                 if (params.out_level > NL802154_SECLEVEL_MAX)
1418                         return -EINVAL;
1419
1420                 changed |= IEEE802154_LLSEC_PARAM_OUT_LEVEL;
1421         }
1422
1423         if (info->attrs[NL802154_ATTR_SEC_FRAME_COUNTER]) {
1424                 params.frame_counter = nla_get_be32(info->attrs[NL802154_ATTR_SEC_FRAME_COUNTER]);
1425                 changed |= IEEE802154_LLSEC_PARAM_FRAME_COUNTER;
1426         }
1427
1428         return rdev_set_llsec_params(rdev, wpan_dev, &params, changed);
1429 }
1430
1431 static int nl802154_send_key(struct sk_buff *msg, u32 cmd, u32 portid,
1432                              u32 seq, int flags,
1433                              struct cfg802154_registered_device *rdev,
1434                              struct net_device *dev,
1435                              const struct ieee802154_llsec_key_entry *key)
1436 {
1437         void *hdr;
1438         u32 commands[NL802154_CMD_FRAME_NR_IDS / 32];
1439         struct nlattr *nl_key, *nl_key_id;
1440
1441         hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
1442         if (!hdr)
1443                 return -1;
1444
1445         if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex))
1446                 goto nla_put_failure;
1447
1448         nl_key = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_KEY);
1449         if (!nl_key)
1450                 goto nla_put_failure;
1451
1452         nl_key_id = nla_nest_start_noflag(msg, NL802154_KEY_ATTR_ID);
1453         if (!nl_key_id)
1454                 goto nla_put_failure;
1455
1456         if (ieee802154_llsec_send_key_id(msg, &key->id) < 0)
1457                 goto nla_put_failure;
1458
1459         nla_nest_end(msg, nl_key_id);
1460
1461         if (nla_put_u8(msg, NL802154_KEY_ATTR_USAGE_FRAMES,
1462                        key->key->frame_types))
1463                 goto nla_put_failure;
1464
1465         if (key->key->frame_types & BIT(NL802154_FRAME_CMD)) {
1466                 /* TODO for each nested */
1467                 memset(commands, 0, sizeof(commands));
1468                 commands[7] = key->key->cmd_frame_ids;
1469                 if (nla_put(msg, NL802154_KEY_ATTR_USAGE_CMDS,
1470                             sizeof(commands), commands))
1471                         goto nla_put_failure;
1472         }
1473
1474         if (nla_put(msg, NL802154_KEY_ATTR_BYTES, NL802154_KEY_SIZE,
1475                     key->key->key))
1476                 goto nla_put_failure;
1477
1478         nla_nest_end(msg, nl_key);
1479         genlmsg_end(msg, hdr);
1480
1481         return 0;
1482
1483 nla_put_failure:
1484         genlmsg_cancel(msg, hdr);
1485         return -EMSGSIZE;
1486 }
1487
1488 static int
1489 nl802154_dump_llsec_key(struct sk_buff *skb, struct netlink_callback *cb)
1490 {
1491         struct cfg802154_registered_device *rdev = NULL;
1492         struct ieee802154_llsec_key_entry *key;
1493         struct ieee802154_llsec_table *table;
1494         struct wpan_dev *wpan_dev;
1495         int err;
1496
1497         err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev);
1498         if (err)
1499                 return err;
1500
1501         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) {
1502                 err = skb->len;
1503                 goto out_err;
1504         }
1505
1506         if (!wpan_dev->netdev) {
1507                 err = -EINVAL;
1508                 goto out_err;
1509         }
1510
1511         rdev_lock_llsec_table(rdev, wpan_dev);
1512         rdev_get_llsec_table(rdev, wpan_dev, &table);
1513
1514         /* TODO make it like station dump */
1515         if (cb->args[2])
1516                 goto out;
1517
1518         list_for_each_entry(key, &table->keys, list) {
1519                 if (nl802154_send_key(skb, NL802154_CMD_NEW_SEC_KEY,
1520                                       NETLINK_CB(cb->skb).portid,
1521                                       cb->nlh->nlmsg_seq, NLM_F_MULTI,
1522                                       rdev, wpan_dev->netdev, key) < 0) {
1523                         /* TODO */
1524                         err = -EIO;
1525                         rdev_unlock_llsec_table(rdev, wpan_dev);
1526                         goto out_err;
1527                 }
1528         }
1529
1530         cb->args[2] = 1;
1531
1532 out:
1533         rdev_unlock_llsec_table(rdev, wpan_dev);
1534         err = skb->len;
1535 out_err:
1536         nl802154_finish_wpan_dev_dump(rdev);
1537
1538         return err;
1539 }
1540
1541 static const struct nla_policy nl802154_key_policy[NL802154_KEY_ATTR_MAX + 1] = {
1542         [NL802154_KEY_ATTR_ID] = { NLA_NESTED },
1543         /* TODO handle it as for_each_nested and NLA_FLAG? */
1544         [NL802154_KEY_ATTR_USAGE_FRAMES] = { NLA_U8 },
1545         /* TODO handle it as for_each_nested, not static array? */
1546         [NL802154_KEY_ATTR_USAGE_CMDS] = { .len = NL802154_CMD_FRAME_NR_IDS / 8 },
1547         [NL802154_KEY_ATTR_BYTES] = { .len = NL802154_KEY_SIZE },
1548 };
1549
1550 static int nl802154_add_llsec_key(struct sk_buff *skb, struct genl_info *info)
1551 {
1552         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1553         struct net_device *dev = info->user_ptr[1];
1554         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1555         struct nlattr *attrs[NL802154_KEY_ATTR_MAX + 1];
1556         struct ieee802154_llsec_key key = { };
1557         struct ieee802154_llsec_key_id id = { };
1558         u32 commands[NL802154_CMD_FRAME_NR_IDS / 32] = { };
1559
1560         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
1561                 return -EOPNOTSUPP;
1562
1563         if (!info->attrs[NL802154_ATTR_SEC_KEY] ||
1564             nla_parse_nested_deprecated(attrs, NL802154_KEY_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_KEY], nl802154_key_policy, info->extack))
1565                 return -EINVAL;
1566
1567         if (!attrs[NL802154_KEY_ATTR_USAGE_FRAMES] ||
1568             !attrs[NL802154_KEY_ATTR_BYTES])
1569                 return -EINVAL;
1570
1571         if (ieee802154_llsec_parse_key_id(attrs[NL802154_KEY_ATTR_ID], &id) < 0)
1572                 return -ENOBUFS;
1573
1574         key.frame_types = nla_get_u8(attrs[NL802154_KEY_ATTR_USAGE_FRAMES]);
1575         if (key.frame_types > BIT(NL802154_FRAME_MAX) ||
1576             ((key.frame_types & BIT(NL802154_FRAME_CMD)) &&
1577              !attrs[NL802154_KEY_ATTR_USAGE_CMDS]))
1578                 return -EINVAL;
1579
1580         if (attrs[NL802154_KEY_ATTR_USAGE_CMDS]) {
1581                 /* TODO for each nested */
1582                 nla_memcpy(commands, attrs[NL802154_KEY_ATTR_USAGE_CMDS],
1583                            NL802154_CMD_FRAME_NR_IDS / 8);
1584
1585                 /* TODO understand the -EINVAL logic here? last condition */
1586                 if (commands[0] || commands[1] || commands[2] || commands[3] ||
1587                     commands[4] || commands[5] || commands[6] ||
1588                     commands[7] > BIT(NL802154_CMD_FRAME_MAX))
1589                         return -EINVAL;
1590
1591                 key.cmd_frame_ids = commands[7];
1592         } else {
1593                 key.cmd_frame_ids = 0;
1594         }
1595
1596         nla_memcpy(key.key, attrs[NL802154_KEY_ATTR_BYTES], NL802154_KEY_SIZE);
1597
1598         if (ieee802154_llsec_parse_key_id(attrs[NL802154_KEY_ATTR_ID], &id) < 0)
1599                 return -ENOBUFS;
1600
1601         return rdev_add_llsec_key(rdev, wpan_dev, &id, &key);
1602 }
1603
1604 static int nl802154_del_llsec_key(struct sk_buff *skb, struct genl_info *info)
1605 {
1606         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1607         struct net_device *dev = info->user_ptr[1];
1608         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1609         struct nlattr *attrs[NL802154_KEY_ATTR_MAX + 1];
1610         struct ieee802154_llsec_key_id id;
1611
1612         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
1613                 return -EOPNOTSUPP;
1614
1615         if (!info->attrs[NL802154_ATTR_SEC_KEY] ||
1616             nla_parse_nested_deprecated(attrs, NL802154_KEY_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_KEY], nl802154_key_policy, info->extack))
1617                 return -EINVAL;
1618
1619         if (ieee802154_llsec_parse_key_id(attrs[NL802154_KEY_ATTR_ID], &id) < 0)
1620                 return -ENOBUFS;
1621
1622         return rdev_del_llsec_key(rdev, wpan_dev, &id);
1623 }
1624
1625 static int nl802154_send_device(struct sk_buff *msg, u32 cmd, u32 portid,
1626                                 u32 seq, int flags,
1627                                 struct cfg802154_registered_device *rdev,
1628                                 struct net_device *dev,
1629                                 const struct ieee802154_llsec_device *dev_desc)
1630 {
1631         void *hdr;
1632         struct nlattr *nl_device;
1633
1634         hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
1635         if (!hdr)
1636                 return -1;
1637
1638         if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex))
1639                 goto nla_put_failure;
1640
1641         nl_device = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_DEVICE);
1642         if (!nl_device)
1643                 goto nla_put_failure;
1644
1645         if (nla_put_u32(msg, NL802154_DEV_ATTR_FRAME_COUNTER,
1646                         dev_desc->frame_counter) ||
1647             nla_put_le16(msg, NL802154_DEV_ATTR_PAN_ID, dev_desc->pan_id) ||
1648             nla_put_le16(msg, NL802154_DEV_ATTR_SHORT_ADDR,
1649                          dev_desc->short_addr) ||
1650             nla_put_le64(msg, NL802154_DEV_ATTR_EXTENDED_ADDR,
1651                          dev_desc->hwaddr, NL802154_DEV_ATTR_PAD) ||
1652             nla_put_u8(msg, NL802154_DEV_ATTR_SECLEVEL_EXEMPT,
1653                        dev_desc->seclevel_exempt) ||
1654             nla_put_u32(msg, NL802154_DEV_ATTR_KEY_MODE, dev_desc->key_mode))
1655                 goto nla_put_failure;
1656
1657         nla_nest_end(msg, nl_device);
1658         genlmsg_end(msg, hdr);
1659
1660         return 0;
1661
1662 nla_put_failure:
1663         genlmsg_cancel(msg, hdr);
1664         return -EMSGSIZE;
1665 }
1666
1667 static int
1668 nl802154_dump_llsec_dev(struct sk_buff *skb, struct netlink_callback *cb)
1669 {
1670         struct cfg802154_registered_device *rdev = NULL;
1671         struct ieee802154_llsec_device *dev;
1672         struct ieee802154_llsec_table *table;
1673         struct wpan_dev *wpan_dev;
1674         int err;
1675
1676         err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev);
1677         if (err)
1678                 return err;
1679
1680         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) {
1681                 err = skb->len;
1682                 goto out_err;
1683         }
1684
1685         if (!wpan_dev->netdev) {
1686                 err = -EINVAL;
1687                 goto out_err;
1688         }
1689
1690         rdev_lock_llsec_table(rdev, wpan_dev);
1691         rdev_get_llsec_table(rdev, wpan_dev, &table);
1692
1693         /* TODO make it like station dump */
1694         if (cb->args[2])
1695                 goto out;
1696
1697         list_for_each_entry(dev, &table->devices, list) {
1698                 if (nl802154_send_device(skb, NL802154_CMD_NEW_SEC_LEVEL,
1699                                          NETLINK_CB(cb->skb).portid,
1700                                          cb->nlh->nlmsg_seq, NLM_F_MULTI,
1701                                          rdev, wpan_dev->netdev, dev) < 0) {
1702                         /* TODO */
1703                         err = -EIO;
1704                         rdev_unlock_llsec_table(rdev, wpan_dev);
1705                         goto out_err;
1706                 }
1707         }
1708
1709         cb->args[2] = 1;
1710
1711 out:
1712         rdev_unlock_llsec_table(rdev, wpan_dev);
1713         err = skb->len;
1714 out_err:
1715         nl802154_finish_wpan_dev_dump(rdev);
1716
1717         return err;
1718 }
1719
1720 static const struct nla_policy nl802154_dev_policy[NL802154_DEV_ATTR_MAX + 1] = {
1721         [NL802154_DEV_ATTR_FRAME_COUNTER] = { NLA_U32 },
1722         [NL802154_DEV_ATTR_PAN_ID] = { .type = NLA_U16 },
1723         [NL802154_DEV_ATTR_SHORT_ADDR] = { .type = NLA_U16 },
1724         [NL802154_DEV_ATTR_EXTENDED_ADDR] = { .type = NLA_U64 },
1725         [NL802154_DEV_ATTR_SECLEVEL_EXEMPT] = { NLA_U8 },
1726         [NL802154_DEV_ATTR_KEY_MODE] = { NLA_U32 },
1727 };
1728
1729 static int
1730 ieee802154_llsec_parse_device(struct nlattr *nla,
1731                               struct ieee802154_llsec_device *dev)
1732 {
1733         struct nlattr *attrs[NL802154_DEV_ATTR_MAX + 1];
1734
1735         if (!nla || nla_parse_nested_deprecated(attrs, NL802154_DEV_ATTR_MAX, nla, nl802154_dev_policy, NULL))
1736                 return -EINVAL;
1737
1738         memset(dev, 0, sizeof(*dev));
1739
1740         if (!attrs[NL802154_DEV_ATTR_FRAME_COUNTER] ||
1741             !attrs[NL802154_DEV_ATTR_PAN_ID] ||
1742             !attrs[NL802154_DEV_ATTR_SHORT_ADDR] ||
1743             !attrs[NL802154_DEV_ATTR_EXTENDED_ADDR] ||
1744             !attrs[NL802154_DEV_ATTR_SECLEVEL_EXEMPT] ||
1745             !attrs[NL802154_DEV_ATTR_KEY_MODE])
1746                 return -EINVAL;
1747
1748         /* TODO be32 */
1749         dev->frame_counter = nla_get_u32(attrs[NL802154_DEV_ATTR_FRAME_COUNTER]);
1750         dev->pan_id = nla_get_le16(attrs[NL802154_DEV_ATTR_PAN_ID]);
1751         dev->short_addr = nla_get_le16(attrs[NL802154_DEV_ATTR_SHORT_ADDR]);
1752         /* TODO rename hwaddr to extended_addr */
1753         dev->hwaddr = nla_get_le64(attrs[NL802154_DEV_ATTR_EXTENDED_ADDR]);
1754         dev->seclevel_exempt = nla_get_u8(attrs[NL802154_DEV_ATTR_SECLEVEL_EXEMPT]);
1755         dev->key_mode = nla_get_u32(attrs[NL802154_DEV_ATTR_KEY_MODE]);
1756
1757         if (dev->key_mode > NL802154_DEVKEY_MAX ||
1758             (dev->seclevel_exempt != 0 && dev->seclevel_exempt != 1))
1759                 return -EINVAL;
1760
1761         return 0;
1762 }
1763
1764 static int nl802154_add_llsec_dev(struct sk_buff *skb, struct genl_info *info)
1765 {
1766         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1767         struct net_device *dev = info->user_ptr[1];
1768         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1769         struct ieee802154_llsec_device dev_desc;
1770
1771         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
1772                 return -EOPNOTSUPP;
1773
1774         if (ieee802154_llsec_parse_device(info->attrs[NL802154_ATTR_SEC_DEVICE],
1775                                           &dev_desc) < 0)
1776                 return -EINVAL;
1777
1778         return rdev_add_device(rdev, wpan_dev, &dev_desc);
1779 }
1780
1781 static int nl802154_del_llsec_dev(struct sk_buff *skb, struct genl_info *info)
1782 {
1783         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1784         struct net_device *dev = info->user_ptr[1];
1785         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1786         struct nlattr *attrs[NL802154_DEV_ATTR_MAX + 1];
1787         __le64 extended_addr;
1788
1789         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
1790                 return -EOPNOTSUPP;
1791
1792         if (!info->attrs[NL802154_ATTR_SEC_DEVICE] ||
1793             nla_parse_nested_deprecated(attrs, NL802154_DEV_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_DEVICE], nl802154_dev_policy, info->extack))
1794                 return -EINVAL;
1795
1796         if (!attrs[NL802154_DEV_ATTR_EXTENDED_ADDR])
1797                 return -EINVAL;
1798
1799         extended_addr = nla_get_le64(attrs[NL802154_DEV_ATTR_EXTENDED_ADDR]);
1800         return rdev_del_device(rdev, wpan_dev, extended_addr);
1801 }
1802
1803 static int nl802154_send_devkey(struct sk_buff *msg, u32 cmd, u32 portid,
1804                                 u32 seq, int flags,
1805                                 struct cfg802154_registered_device *rdev,
1806                                 struct net_device *dev, __le64 extended_addr,
1807                                 const struct ieee802154_llsec_device_key *devkey)
1808 {
1809         void *hdr;
1810         struct nlattr *nl_devkey, *nl_key_id;
1811
1812         hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
1813         if (!hdr)
1814                 return -1;
1815
1816         if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex))
1817                 goto nla_put_failure;
1818
1819         nl_devkey = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_DEVKEY);
1820         if (!nl_devkey)
1821                 goto nla_put_failure;
1822
1823         if (nla_put_le64(msg, NL802154_DEVKEY_ATTR_EXTENDED_ADDR,
1824                          extended_addr, NL802154_DEVKEY_ATTR_PAD) ||
1825             nla_put_u32(msg, NL802154_DEVKEY_ATTR_FRAME_COUNTER,
1826                         devkey->frame_counter))
1827                 goto nla_put_failure;
1828
1829         nl_key_id = nla_nest_start_noflag(msg, NL802154_DEVKEY_ATTR_ID);
1830         if (!nl_key_id)
1831                 goto nla_put_failure;
1832
1833         if (ieee802154_llsec_send_key_id(msg, &devkey->key_id) < 0)
1834                 goto nla_put_failure;
1835
1836         nla_nest_end(msg, nl_key_id);
1837         nla_nest_end(msg, nl_devkey);
1838         genlmsg_end(msg, hdr);
1839
1840         return 0;
1841
1842 nla_put_failure:
1843         genlmsg_cancel(msg, hdr);
1844         return -EMSGSIZE;
1845 }
1846
1847 static int
1848 nl802154_dump_llsec_devkey(struct sk_buff *skb, struct netlink_callback *cb)
1849 {
1850         struct cfg802154_registered_device *rdev = NULL;
1851         struct ieee802154_llsec_device_key *kpos;
1852         struct ieee802154_llsec_device *dpos;
1853         struct ieee802154_llsec_table *table;
1854         struct wpan_dev *wpan_dev;
1855         int err;
1856
1857         err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev);
1858         if (err)
1859                 return err;
1860
1861         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) {
1862                 err = skb->len;
1863                 goto out_err;
1864         }
1865
1866         if (!wpan_dev->netdev) {
1867                 err = -EINVAL;
1868                 goto out_err;
1869         }
1870
1871         rdev_lock_llsec_table(rdev, wpan_dev);
1872         rdev_get_llsec_table(rdev, wpan_dev, &table);
1873
1874         /* TODO make it like station dump */
1875         if (cb->args[2])
1876                 goto out;
1877
1878         /* TODO look if remove devkey and do some nested attribute */
1879         list_for_each_entry(dpos, &table->devices, list) {
1880                 list_for_each_entry(kpos, &dpos->keys, list) {
1881                         if (nl802154_send_devkey(skb,
1882                                                  NL802154_CMD_NEW_SEC_LEVEL,
1883                                                  NETLINK_CB(cb->skb).portid,
1884                                                  cb->nlh->nlmsg_seq,
1885                                                  NLM_F_MULTI, rdev,
1886                                                  wpan_dev->netdev,
1887                                                  dpos->hwaddr,
1888                                                  kpos) < 0) {
1889                                 /* TODO */
1890                                 err = -EIO;
1891                                 rdev_unlock_llsec_table(rdev, wpan_dev);
1892                                 goto out_err;
1893                         }
1894                 }
1895         }
1896
1897         cb->args[2] = 1;
1898
1899 out:
1900         rdev_unlock_llsec_table(rdev, wpan_dev);
1901         err = skb->len;
1902 out_err:
1903         nl802154_finish_wpan_dev_dump(rdev);
1904
1905         return err;
1906 }
1907
1908 static const struct nla_policy nl802154_devkey_policy[NL802154_DEVKEY_ATTR_MAX + 1] = {
1909         [NL802154_DEVKEY_ATTR_FRAME_COUNTER] = { NLA_U32 },
1910         [NL802154_DEVKEY_ATTR_EXTENDED_ADDR] = { NLA_U64 },
1911         [NL802154_DEVKEY_ATTR_ID] = { NLA_NESTED },
1912 };
1913
1914 static int nl802154_add_llsec_devkey(struct sk_buff *skb, struct genl_info *info)
1915 {
1916         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1917         struct net_device *dev = info->user_ptr[1];
1918         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1919         struct nlattr *attrs[NL802154_DEVKEY_ATTR_MAX + 1];
1920         struct ieee802154_llsec_device_key key;
1921         __le64 extended_addr;
1922
1923         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
1924                 return -EOPNOTSUPP;
1925
1926         if (!info->attrs[NL802154_ATTR_SEC_DEVKEY] ||
1927             nla_parse_nested_deprecated(attrs, NL802154_DEVKEY_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_DEVKEY], nl802154_devkey_policy, info->extack) < 0)
1928                 return -EINVAL;
1929
1930         if (!attrs[NL802154_DEVKEY_ATTR_FRAME_COUNTER] ||
1931             !attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR])
1932                 return -EINVAL;
1933
1934         /* TODO change key.id ? */
1935         if (ieee802154_llsec_parse_key_id(attrs[NL802154_DEVKEY_ATTR_ID],
1936                                           &key.key_id) < 0)
1937                 return -ENOBUFS;
1938
1939         /* TODO be32 */
1940         key.frame_counter = nla_get_u32(attrs[NL802154_DEVKEY_ATTR_FRAME_COUNTER]);
1941         /* TODO change naming hwaddr -> extended_addr
1942          * check unique identifier short+pan OR extended_addr
1943          */
1944         extended_addr = nla_get_le64(attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR]);
1945         return rdev_add_devkey(rdev, wpan_dev, extended_addr, &key);
1946 }
1947
1948 static int nl802154_del_llsec_devkey(struct sk_buff *skb, struct genl_info *info)
1949 {
1950         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1951         struct net_device *dev = info->user_ptr[1];
1952         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1953         struct nlattr *attrs[NL802154_DEVKEY_ATTR_MAX + 1];
1954         struct ieee802154_llsec_device_key key;
1955         __le64 extended_addr;
1956
1957         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
1958                 return -EOPNOTSUPP;
1959
1960         if (!info->attrs[NL802154_ATTR_SEC_DEVKEY] ||
1961             nla_parse_nested_deprecated(attrs, NL802154_DEVKEY_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_DEVKEY], nl802154_devkey_policy, info->extack))
1962                 return -EINVAL;
1963
1964         if (!attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR])
1965                 return -EINVAL;
1966
1967         /* TODO change key.id ? */
1968         if (ieee802154_llsec_parse_key_id(attrs[NL802154_DEVKEY_ATTR_ID],
1969                                           &key.key_id) < 0)
1970                 return -ENOBUFS;
1971
1972         /* TODO change naming hwaddr -> extended_addr
1973          * check unique identifier short+pan OR extended_addr
1974          */
1975         extended_addr = nla_get_le64(attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR]);
1976         return rdev_del_devkey(rdev, wpan_dev, extended_addr, &key);
1977 }
1978
1979 static int nl802154_send_seclevel(struct sk_buff *msg, u32 cmd, u32 portid,
1980                                   u32 seq, int flags,
1981                                   struct cfg802154_registered_device *rdev,
1982                                   struct net_device *dev,
1983                                   const struct ieee802154_llsec_seclevel *sl)
1984 {
1985         void *hdr;
1986         struct nlattr *nl_seclevel;
1987
1988         hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
1989         if (!hdr)
1990                 return -1;
1991
1992         if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex))
1993                 goto nla_put_failure;
1994
1995         nl_seclevel = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_LEVEL);
1996         if (!nl_seclevel)
1997                 goto nla_put_failure;
1998
1999         if (nla_put_u32(msg, NL802154_SECLEVEL_ATTR_FRAME, sl->frame_type) ||
2000             nla_put_u32(msg, NL802154_SECLEVEL_ATTR_LEVELS, sl->sec_levels) ||
2001             nla_put_u8(msg, NL802154_SECLEVEL_ATTR_DEV_OVERRIDE,
2002                        sl->device_override))
2003                 goto nla_put_failure;
2004
2005         if (sl->frame_type == NL802154_FRAME_CMD) {
2006                 if (nla_put_u32(msg, NL802154_SECLEVEL_ATTR_CMD_FRAME,
2007                                 sl->cmd_frame_id))
2008                         goto nla_put_failure;
2009         }
2010
2011         nla_nest_end(msg, nl_seclevel);
2012         genlmsg_end(msg, hdr);
2013
2014         return 0;
2015
2016 nla_put_failure:
2017         genlmsg_cancel(msg, hdr);
2018         return -EMSGSIZE;
2019 }
2020
2021 static int
2022 nl802154_dump_llsec_seclevel(struct sk_buff *skb, struct netlink_callback *cb)
2023 {
2024         struct cfg802154_registered_device *rdev = NULL;
2025         struct ieee802154_llsec_seclevel *sl;
2026         struct ieee802154_llsec_table *table;
2027         struct wpan_dev *wpan_dev;
2028         int err;
2029
2030         err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev);
2031         if (err)
2032                 return err;
2033
2034         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) {
2035                 err = skb->len;
2036                 goto out_err;
2037         }
2038
2039         if (!wpan_dev->netdev) {
2040                 err = -EINVAL;
2041                 goto out_err;
2042         }
2043
2044         rdev_lock_llsec_table(rdev, wpan_dev);
2045         rdev_get_llsec_table(rdev, wpan_dev, &table);
2046
2047         /* TODO make it like station dump */
2048         if (cb->args[2])
2049                 goto out;
2050
2051         list_for_each_entry(sl, &table->security_levels, list) {
2052                 if (nl802154_send_seclevel(skb, NL802154_CMD_NEW_SEC_LEVEL,
2053                                            NETLINK_CB(cb->skb).portid,
2054                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
2055                                            rdev, wpan_dev->netdev, sl) < 0) {
2056                         /* TODO */
2057                         err = -EIO;
2058                         rdev_unlock_llsec_table(rdev, wpan_dev);
2059                         goto out_err;
2060                 }
2061         }
2062
2063         cb->args[2] = 1;
2064
2065 out:
2066         rdev_unlock_llsec_table(rdev, wpan_dev);
2067         err = skb->len;
2068 out_err:
2069         nl802154_finish_wpan_dev_dump(rdev);
2070
2071         return err;
2072 }
2073
2074 static const struct nla_policy nl802154_seclevel_policy[NL802154_SECLEVEL_ATTR_MAX + 1] = {
2075         [NL802154_SECLEVEL_ATTR_LEVELS] = { .type = NLA_U8 },
2076         [NL802154_SECLEVEL_ATTR_FRAME] = { .type = NLA_U32 },
2077         [NL802154_SECLEVEL_ATTR_CMD_FRAME] = { .type = NLA_U32 },
2078         [NL802154_SECLEVEL_ATTR_DEV_OVERRIDE] = { .type = NLA_U8 },
2079 };
2080
2081 static int
2082 llsec_parse_seclevel(struct nlattr *nla, struct ieee802154_llsec_seclevel *sl)
2083 {
2084         struct nlattr *attrs[NL802154_SECLEVEL_ATTR_MAX + 1];
2085
2086         if (!nla || nla_parse_nested_deprecated(attrs, NL802154_SECLEVEL_ATTR_MAX, nla, nl802154_seclevel_policy, NULL))
2087                 return -EINVAL;
2088
2089         memset(sl, 0, sizeof(*sl));
2090
2091         if (!attrs[NL802154_SECLEVEL_ATTR_LEVELS] ||
2092             !attrs[NL802154_SECLEVEL_ATTR_FRAME] ||
2093             !attrs[NL802154_SECLEVEL_ATTR_DEV_OVERRIDE])
2094                 return -EINVAL;
2095
2096         sl->sec_levels = nla_get_u8(attrs[NL802154_SECLEVEL_ATTR_LEVELS]);
2097         sl->frame_type = nla_get_u32(attrs[NL802154_SECLEVEL_ATTR_FRAME]);
2098         sl->device_override = nla_get_u8(attrs[NL802154_SECLEVEL_ATTR_DEV_OVERRIDE]);
2099         if (sl->frame_type > NL802154_FRAME_MAX ||
2100             (sl->device_override != 0 && sl->device_override != 1))
2101                 return -EINVAL;
2102
2103         if (sl->frame_type == NL802154_FRAME_CMD) {
2104                 if (!attrs[NL802154_SECLEVEL_ATTR_CMD_FRAME])
2105                         return -EINVAL;
2106
2107                 sl->cmd_frame_id = nla_get_u32(attrs[NL802154_SECLEVEL_ATTR_CMD_FRAME]);
2108                 if (sl->cmd_frame_id > NL802154_CMD_FRAME_MAX)
2109                         return -EINVAL;
2110         }
2111
2112         return 0;
2113 }
2114
2115 static int nl802154_add_llsec_seclevel(struct sk_buff *skb,
2116                                        struct genl_info *info)
2117 {
2118         struct cfg802154_registered_device *rdev = info->user_ptr[0];
2119         struct net_device *dev = info->user_ptr[1];
2120         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
2121         struct ieee802154_llsec_seclevel sl;
2122
2123         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
2124                 return -EOPNOTSUPP;
2125
2126         if (llsec_parse_seclevel(info->attrs[NL802154_ATTR_SEC_LEVEL],
2127                                  &sl) < 0)
2128                 return -EINVAL;
2129
2130         return rdev_add_seclevel(rdev, wpan_dev, &sl);
2131 }
2132
2133 static int nl802154_del_llsec_seclevel(struct sk_buff *skb,
2134                                        struct genl_info *info)
2135 {
2136         struct cfg802154_registered_device *rdev = info->user_ptr[0];
2137         struct net_device *dev = info->user_ptr[1];
2138         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
2139         struct ieee802154_llsec_seclevel sl;
2140
2141         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
2142                 return -EOPNOTSUPP;
2143
2144         if (!info->attrs[NL802154_ATTR_SEC_LEVEL] ||
2145             llsec_parse_seclevel(info->attrs[NL802154_ATTR_SEC_LEVEL],
2146                                  &sl) < 0)
2147                 return -EINVAL;
2148
2149         return rdev_del_seclevel(rdev, wpan_dev, &sl);
2150 }
2151 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
2152
2153 #define NL802154_FLAG_NEED_WPAN_PHY     0x01
2154 #define NL802154_FLAG_NEED_NETDEV       0x02
2155 #define NL802154_FLAG_NEED_RTNL         0x04
2156 #define NL802154_FLAG_CHECK_NETDEV_UP   0x08
2157 #define NL802154_FLAG_NEED_WPAN_DEV     0x10
2158
2159 static int nl802154_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
2160                              struct genl_info *info)
2161 {
2162         struct cfg802154_registered_device *rdev;
2163         struct wpan_dev *wpan_dev;
2164         struct net_device *dev;
2165         bool rtnl = ops->internal_flags & NL802154_FLAG_NEED_RTNL;
2166
2167         if (rtnl)
2168                 rtnl_lock();
2169
2170         if (ops->internal_flags & NL802154_FLAG_NEED_WPAN_PHY) {
2171                 rdev = cfg802154_get_dev_from_info(genl_info_net(info), info);
2172                 if (IS_ERR(rdev)) {
2173                         if (rtnl)
2174                                 rtnl_unlock();
2175                         return PTR_ERR(rdev);
2176                 }
2177                 info->user_ptr[0] = rdev;
2178         } else if (ops->internal_flags & NL802154_FLAG_NEED_NETDEV ||
2179                    ops->internal_flags & NL802154_FLAG_NEED_WPAN_DEV) {
2180                 ASSERT_RTNL();
2181                 wpan_dev = __cfg802154_wpan_dev_from_attrs(genl_info_net(info),
2182                                                            info->attrs);
2183                 if (IS_ERR(wpan_dev)) {
2184                         if (rtnl)
2185                                 rtnl_unlock();
2186                         return PTR_ERR(wpan_dev);
2187                 }
2188
2189                 dev = wpan_dev->netdev;
2190                 rdev = wpan_phy_to_rdev(wpan_dev->wpan_phy);
2191
2192                 if (ops->internal_flags & NL802154_FLAG_NEED_NETDEV) {
2193                         if (!dev) {
2194                                 if (rtnl)
2195                                         rtnl_unlock();
2196                                 return -EINVAL;
2197                         }
2198
2199                         info->user_ptr[1] = dev;
2200                 } else {
2201                         info->user_ptr[1] = wpan_dev;
2202                 }
2203
2204                 if (dev) {
2205                         if (ops->internal_flags & NL802154_FLAG_CHECK_NETDEV_UP &&
2206                             !netif_running(dev)) {
2207                                 if (rtnl)
2208                                         rtnl_unlock();
2209                                 return -ENETDOWN;
2210                         }
2211
2212                         dev_hold(dev);
2213                 }
2214
2215                 info->user_ptr[0] = rdev;
2216         }
2217
2218         return 0;
2219 }
2220
2221 static void nl802154_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
2222                                struct genl_info *info)
2223 {
2224         if (info->user_ptr[1]) {
2225                 if (ops->internal_flags & NL802154_FLAG_NEED_WPAN_DEV) {
2226                         struct wpan_dev *wpan_dev = info->user_ptr[1];
2227
2228                         if (wpan_dev->netdev)
2229                                 dev_put(wpan_dev->netdev);
2230                 } else {
2231                         dev_put(info->user_ptr[1]);
2232                 }
2233         }
2234
2235         if (ops->internal_flags & NL802154_FLAG_NEED_RTNL)
2236                 rtnl_unlock();
2237 }
2238
2239 static const struct genl_ops nl802154_ops[] = {
2240         {
2241                 .cmd = NL802154_CMD_GET_WPAN_PHY,
2242                 .validate = GENL_DONT_VALIDATE_STRICT |
2243                             GENL_DONT_VALIDATE_DUMP_STRICT,
2244                 .doit = nl802154_get_wpan_phy,
2245                 .dumpit = nl802154_dump_wpan_phy,
2246                 .done = nl802154_dump_wpan_phy_done,
2247                 /* can be retrieved by unprivileged users */
2248                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2249                                   NL802154_FLAG_NEED_RTNL,
2250         },
2251         {
2252                 .cmd = NL802154_CMD_GET_INTERFACE,
2253                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2254                 .doit = nl802154_get_interface,
2255                 .dumpit = nl802154_dump_interface,
2256                 /* can be retrieved by unprivileged users */
2257                 .internal_flags = NL802154_FLAG_NEED_WPAN_DEV |
2258                                   NL802154_FLAG_NEED_RTNL,
2259         },
2260         {
2261                 .cmd = NL802154_CMD_NEW_INTERFACE,
2262                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2263                 .doit = nl802154_new_interface,
2264                 .flags = GENL_ADMIN_PERM,
2265                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2266                                   NL802154_FLAG_NEED_RTNL,
2267         },
2268         {
2269                 .cmd = NL802154_CMD_DEL_INTERFACE,
2270                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2271                 .doit = nl802154_del_interface,
2272                 .flags = GENL_ADMIN_PERM,
2273                 .internal_flags = NL802154_FLAG_NEED_WPAN_DEV |
2274                                   NL802154_FLAG_NEED_RTNL,
2275         },
2276         {
2277                 .cmd = NL802154_CMD_SET_CHANNEL,
2278                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2279                 .doit = nl802154_set_channel,
2280                 .flags = GENL_ADMIN_PERM,
2281                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2282                                   NL802154_FLAG_NEED_RTNL,
2283         },
2284         {
2285                 .cmd = NL802154_CMD_SET_CCA_MODE,
2286                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2287                 .doit = nl802154_set_cca_mode,
2288                 .flags = GENL_ADMIN_PERM,
2289                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2290                                   NL802154_FLAG_NEED_RTNL,
2291         },
2292         {
2293                 .cmd = NL802154_CMD_SET_CCA_ED_LEVEL,
2294                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2295                 .doit = nl802154_set_cca_ed_level,
2296                 .flags = GENL_ADMIN_PERM,
2297                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2298                                   NL802154_FLAG_NEED_RTNL,
2299         },
2300         {
2301                 .cmd = NL802154_CMD_SET_TX_POWER,
2302                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2303                 .doit = nl802154_set_tx_power,
2304                 .flags = GENL_ADMIN_PERM,
2305                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2306                                   NL802154_FLAG_NEED_RTNL,
2307         },
2308         {
2309                 .cmd = NL802154_CMD_SET_WPAN_PHY_NETNS,
2310                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2311                 .doit = nl802154_wpan_phy_netns,
2312                 .flags = GENL_ADMIN_PERM,
2313                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2314                                   NL802154_FLAG_NEED_RTNL,
2315         },
2316         {
2317                 .cmd = NL802154_CMD_SET_PAN_ID,
2318                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2319                 .doit = nl802154_set_pan_id,
2320                 .flags = GENL_ADMIN_PERM,
2321                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2322                                   NL802154_FLAG_NEED_RTNL,
2323         },
2324         {
2325                 .cmd = NL802154_CMD_SET_SHORT_ADDR,
2326                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2327                 .doit = nl802154_set_short_addr,
2328                 .flags = GENL_ADMIN_PERM,
2329                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2330                                   NL802154_FLAG_NEED_RTNL,
2331         },
2332         {
2333                 .cmd = NL802154_CMD_SET_BACKOFF_EXPONENT,
2334                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2335                 .doit = nl802154_set_backoff_exponent,
2336                 .flags = GENL_ADMIN_PERM,
2337                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2338                                   NL802154_FLAG_NEED_RTNL,
2339         },
2340         {
2341                 .cmd = NL802154_CMD_SET_MAX_CSMA_BACKOFFS,
2342                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2343                 .doit = nl802154_set_max_csma_backoffs,
2344                 .flags = GENL_ADMIN_PERM,
2345                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2346                                   NL802154_FLAG_NEED_RTNL,
2347         },
2348         {
2349                 .cmd = NL802154_CMD_SET_MAX_FRAME_RETRIES,
2350                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2351                 .doit = nl802154_set_max_frame_retries,
2352                 .flags = GENL_ADMIN_PERM,
2353                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2354                                   NL802154_FLAG_NEED_RTNL,
2355         },
2356         {
2357                 .cmd = NL802154_CMD_SET_LBT_MODE,
2358                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2359                 .doit = nl802154_set_lbt_mode,
2360                 .flags = GENL_ADMIN_PERM,
2361                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2362                                   NL802154_FLAG_NEED_RTNL,
2363         },
2364         {
2365                 .cmd = NL802154_CMD_SET_ACKREQ_DEFAULT,
2366                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2367                 .doit = nl802154_set_ackreq_default,
2368                 .flags = GENL_ADMIN_PERM,
2369                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2370                                   NL802154_FLAG_NEED_RTNL,
2371         },
2372 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
2373         {
2374                 .cmd = NL802154_CMD_SET_SEC_PARAMS,
2375                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2376                 .doit = nl802154_set_llsec_params,
2377                 .flags = GENL_ADMIN_PERM,
2378                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2379                                   NL802154_FLAG_NEED_RTNL,
2380         },
2381         {
2382                 .cmd = NL802154_CMD_GET_SEC_KEY,
2383                 .validate = GENL_DONT_VALIDATE_STRICT |
2384                             GENL_DONT_VALIDATE_DUMP_STRICT,
2385                 /* TODO .doit by matching key id? */
2386                 .dumpit = nl802154_dump_llsec_key,
2387                 .flags = GENL_ADMIN_PERM,
2388                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2389                                   NL802154_FLAG_NEED_RTNL,
2390         },
2391         {
2392                 .cmd = NL802154_CMD_NEW_SEC_KEY,
2393                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2394                 .doit = nl802154_add_llsec_key,
2395                 .flags = GENL_ADMIN_PERM,
2396                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2397                                   NL802154_FLAG_NEED_RTNL,
2398         },
2399         {
2400                 .cmd = NL802154_CMD_DEL_SEC_KEY,
2401                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2402                 .doit = nl802154_del_llsec_key,
2403                 .flags = GENL_ADMIN_PERM,
2404                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2405                                   NL802154_FLAG_NEED_RTNL,
2406         },
2407         /* TODO unique identifier must short+pan OR extended_addr */
2408         {
2409                 .cmd = NL802154_CMD_GET_SEC_DEV,
2410                 .validate = GENL_DONT_VALIDATE_STRICT |
2411                             GENL_DONT_VALIDATE_DUMP_STRICT,
2412                 /* TODO .doit by matching extended_addr? */
2413                 .dumpit = nl802154_dump_llsec_dev,
2414                 .flags = GENL_ADMIN_PERM,
2415                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2416                                   NL802154_FLAG_NEED_RTNL,
2417         },
2418         {
2419                 .cmd = NL802154_CMD_NEW_SEC_DEV,
2420                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2421                 .doit = nl802154_add_llsec_dev,
2422                 .flags = GENL_ADMIN_PERM,
2423                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2424                                   NL802154_FLAG_NEED_RTNL,
2425         },
2426         {
2427                 .cmd = NL802154_CMD_DEL_SEC_DEV,
2428                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2429                 .doit = nl802154_del_llsec_dev,
2430                 .flags = GENL_ADMIN_PERM,
2431                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2432                                   NL802154_FLAG_NEED_RTNL,
2433         },
2434         /* TODO remove complete devkey, put it as nested? */
2435         {
2436                 .cmd = NL802154_CMD_GET_SEC_DEVKEY,
2437                 .validate = GENL_DONT_VALIDATE_STRICT |
2438                             GENL_DONT_VALIDATE_DUMP_STRICT,
2439                 /* TODO doit by matching ??? */
2440                 .dumpit = nl802154_dump_llsec_devkey,
2441                 .flags = GENL_ADMIN_PERM,
2442                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2443                                   NL802154_FLAG_NEED_RTNL,
2444         },
2445         {
2446                 .cmd = NL802154_CMD_NEW_SEC_DEVKEY,
2447                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2448                 .doit = nl802154_add_llsec_devkey,
2449                 .flags = GENL_ADMIN_PERM,
2450                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2451                                   NL802154_FLAG_NEED_RTNL,
2452         },
2453         {
2454                 .cmd = NL802154_CMD_DEL_SEC_DEVKEY,
2455                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2456                 .doit = nl802154_del_llsec_devkey,
2457                 .flags = GENL_ADMIN_PERM,
2458                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2459                                   NL802154_FLAG_NEED_RTNL,
2460         },
2461         {
2462                 .cmd = NL802154_CMD_GET_SEC_LEVEL,
2463                 .validate = GENL_DONT_VALIDATE_STRICT |
2464                             GENL_DONT_VALIDATE_DUMP_STRICT,
2465                 /* TODO .doit by matching frame_type? */
2466                 .dumpit = nl802154_dump_llsec_seclevel,
2467                 .flags = GENL_ADMIN_PERM,
2468                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2469                                   NL802154_FLAG_NEED_RTNL,
2470         },
2471         {
2472                 .cmd = NL802154_CMD_NEW_SEC_LEVEL,
2473                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2474                 .doit = nl802154_add_llsec_seclevel,
2475                 .flags = GENL_ADMIN_PERM,
2476                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2477                                   NL802154_FLAG_NEED_RTNL,
2478         },
2479         {
2480                 .cmd = NL802154_CMD_DEL_SEC_LEVEL,
2481                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2482                 /* TODO match frame_type only? */
2483                 .doit = nl802154_del_llsec_seclevel,
2484                 .flags = GENL_ADMIN_PERM,
2485                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2486                                   NL802154_FLAG_NEED_RTNL,
2487         },
2488 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
2489 };
2490
2491 static struct genl_family nl802154_fam __ro_after_init = {
2492         .name = NL802154_GENL_NAME,     /* have users key off the name instead */
2493         .hdrsize = 0,                   /* no private header */
2494         .version = 1,                   /* no particular meaning now */
2495         .maxattr = NL802154_ATTR_MAX,
2496         .policy = nl802154_policy,
2497         .netnsok = true,
2498         .pre_doit = nl802154_pre_doit,
2499         .post_doit = nl802154_post_doit,
2500         .module = THIS_MODULE,
2501         .ops = nl802154_ops,
2502         .n_ops = ARRAY_SIZE(nl802154_ops),
2503         .mcgrps = nl802154_mcgrps,
2504         .n_mcgrps = ARRAY_SIZE(nl802154_mcgrps),
2505 };
2506
2507 /* initialisation/exit functions */
2508 int __init nl802154_init(void)
2509 {
2510         return genl_register_family(&nl802154_fam);
2511 }
2512
2513 void nl802154_exit(void)
2514 {
2515         genl_unregister_family(&nl802154_fam);
2516 }