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         NL802154_MCGRP_SCAN,
  30 };
  31
  32 static const struct genl_multicast_group nl802154_mcgrps[] = {
  33         [NL802154_MCGRP_CONFIG] = { .name = "config", },
  34         [NL802154_MCGRP_SCAN] = { .name = "scan", },
  35 };
  36
  37 /* returns ERR_PTR values */
  38 static struct wpan_dev *
  39 __cfg802154_wpan_dev_from_attrs(struct net *netns, struct nlattr **attrs)
  40 {
  41         struct cfg802154_registered_device *rdev;
  42         struct wpan_dev *result = NULL;
  43         bool have_ifidx = attrs[NL802154_ATTR_IFINDEX];
  44         bool have_wpan_dev_id = attrs[NL802154_ATTR_WPAN_DEV];
  45         u64 wpan_dev_id;
  46         int wpan_phy_idx = -1;
  47         int ifidx = -1;
  48
  49         ASSERT_RTNL();
  50
  51         if (!have_ifidx && !have_wpan_dev_id)
  52                 return ERR_PTR(-EINVAL);
  53
  54         if (have_ifidx)
  55                 ifidx = nla_get_u32(attrs[NL802154_ATTR_IFINDEX]);
  56         if (have_wpan_dev_id) {
  57                 wpan_dev_id = nla_get_u64(attrs[NL802154_ATTR_WPAN_DEV]);
  58                 wpan_phy_idx = wpan_dev_id >> 32;
  59         }
  60
  61         list_for_each_entry(rdev, &cfg802154_rdev_list, list) {
  62                 struct wpan_dev *wpan_dev;
  63
  64                 if (wpan_phy_net(&rdev->wpan_phy) != netns)
  65                         continue;
  66
  67                 if (have_wpan_dev_id && rdev->wpan_phy_idx != wpan_phy_idx)
  68                         continue;
  69
  70                 list_for_each_entry(wpan_dev, &rdev->wpan_dev_list, list) {
  71                         if (have_ifidx && wpan_dev->netdev &&
  72                             wpan_dev->netdev->ifindex == ifidx) {
  73                                 result = wpan_dev;
  74                                 break;
  75                         }
  76                         if (have_wpan_dev_id &&
  77                             wpan_dev->identifier == (u32)wpan_dev_id) {
  78                                 result = wpan_dev;
  79                                 break;
  80                         }
  81                 }
  82
  83                 if (result)
  84                         break;
  85         }
  86
  87         if (result)
  88                 return result;
  89
  90         return ERR_PTR(-ENODEV);
  91 }
  92
  93 static struct cfg802154_registered_device *
  94 __cfg802154_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
  95 {
  96         struct cfg802154_registered_device *rdev = NULL, *tmp;
  97         struct net_device *netdev;
  98
  99         ASSERT_RTNL();
 100
 101         if (!attrs[NL802154_ATTR_WPAN_PHY] &&
 102             !attrs[NL802154_ATTR_IFINDEX] &&
 103             !attrs[NL802154_ATTR_WPAN_DEV])
 104                 return ERR_PTR(-EINVAL);
 105
 106         if (attrs[NL802154_ATTR_WPAN_PHY])
 107                 rdev = cfg802154_rdev_by_wpan_phy_idx(
 108                                 nla_get_u32(attrs[NL802154_ATTR_WPAN_PHY]));
 109
 110         if (attrs[NL802154_ATTR_WPAN_DEV]) {
 111                 u64 wpan_dev_id = nla_get_u64(attrs[NL802154_ATTR_WPAN_DEV]);
 112                 struct wpan_dev *wpan_dev;
 113                 bool found = false;
 114
 115                 tmp = cfg802154_rdev_by_wpan_phy_idx(wpan_dev_id >> 32);
 116                 if (tmp) {
 117                         /* make sure wpan_dev exists */
 118                         list_for_each_entry(wpan_dev, &tmp->wpan_dev_list, list) {
 119                                 if (wpan_dev->identifier != (u32)wpan_dev_id)
 120                                         continue;
 121                                 found = true;
 122                                 break;
 123                         }
 124
 125                         if (!found)
 126                                 tmp = NULL;
 127
 128                         if (rdev && tmp != rdev)
 129                                 return ERR_PTR(-EINVAL);
 130                         rdev = tmp;
 131                 }
 132         }
 133
 134         if (attrs[NL802154_ATTR_IFINDEX]) {
 135                 int ifindex = nla_get_u32(attrs[NL802154_ATTR_IFINDEX]);
 136
 137                 netdev = __dev_get_by_index(netns, ifindex);
 138                 if (netdev) {
 139                         if (netdev->ieee802154_ptr)
 140                                 tmp = wpan_phy_to_rdev(
 141                                                 netdev->ieee802154_ptr->wpan_phy);
 142                         else
 143                                 tmp = NULL;
 144
 145                         /* not wireless device -- return error */
 146                         if (!tmp)
 147                                 return ERR_PTR(-EINVAL);
 148
 149                         /* mismatch -- return error */
 150                         if (rdev && tmp != rdev)
 151                                 return ERR_PTR(-EINVAL);
 152
 153                         rdev = tmp;
 154                 }
 155         }
 156
 157         if (!rdev)
 158                 return ERR_PTR(-ENODEV);
 159
 160         if (netns != wpan_phy_net(&rdev->wpan_phy))
 161                 return ERR_PTR(-ENODEV);
 162
 163         return rdev;
 164 }
 165
 166 /* This function returns a pointer to the driver
 167  * that the genl_info item that is passed refers to.
 168  *
 169  * The result of this can be a PTR_ERR and hence must
 170  * be checked with IS_ERR() for errors.
 171  */
 172 static struct cfg802154_registered_device *
 173 cfg802154_get_dev_from_info(struct net *netns, struct genl_info *info)
 174 {
 175         return __cfg802154_rdev_from_attrs(netns, info->attrs);
 176 }
 177
 178 /* policy for the attributes */
 179 static const struct nla_policy nl802154_policy[NL802154_ATTR_MAX+1] = {
 180         [NL802154_ATTR_WPAN_PHY] = { .type = NLA_U32 },
 181         [NL802154_ATTR_WPAN_PHY_NAME] = { .type = NLA_NUL_STRING,
 182                                           .len = 20-1 },
 183
 184         [NL802154_ATTR_IFINDEX] = { .type = NLA_U32 },
 185         [NL802154_ATTR_IFTYPE] = { .type = NLA_U32 },
 186         [NL802154_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 187
 188         [NL802154_ATTR_WPAN_DEV] = { .type = NLA_U64 },
 189
 190         [NL802154_ATTR_PAGE] = NLA_POLICY_MAX(NLA_U8, IEEE802154_MAX_PAGE),
 191         [NL802154_ATTR_CHANNEL] = NLA_POLICY_MAX(NLA_U8, IEEE802154_MAX_CHANNEL),
 192
 193         [NL802154_ATTR_TX_POWER] = { .type = NLA_S32, },
 194
 195         [NL802154_ATTR_CCA_MODE] = { .type = NLA_U32, },
 196         [NL802154_ATTR_CCA_OPT] = { .type = NLA_U32, },
 197         [NL802154_ATTR_CCA_ED_LEVEL] = { .type = NLA_S32, },
 198
 199         [NL802154_ATTR_SUPPORTED_CHANNEL] = { .type = NLA_U32, },
 200
 201         [NL802154_ATTR_PAN_ID] = { .type = NLA_U16, },
 202         [NL802154_ATTR_EXTENDED_ADDR] = { .type = NLA_U64 },
 203         [NL802154_ATTR_SHORT_ADDR] = { .type = NLA_U16, },
 204
 205         [NL802154_ATTR_MIN_BE] = { .type = NLA_U8, },
 206         [NL802154_ATTR_MAX_BE] = { .type = NLA_U8, },
 207         [NL802154_ATTR_MAX_CSMA_BACKOFFS] = { .type = NLA_U8, },
 208
 209         [NL802154_ATTR_MAX_FRAME_RETRIES] = { .type = NLA_S8, },
 210
 211         [NL802154_ATTR_LBT_MODE] = { .type = NLA_U8, },
 212
 213         [NL802154_ATTR_WPAN_PHY_CAPS] = { .type = NLA_NESTED },
 214
 215         [NL802154_ATTR_SUPPORTED_COMMANDS] = { .type = NLA_NESTED },
 216
 217         [NL802154_ATTR_ACKREQ_DEFAULT] = { .type = NLA_U8 },
 218
 219         [NL802154_ATTR_PID] = { .type = NLA_U32 },
 220         [NL802154_ATTR_NETNS_FD] = { .type = NLA_U32 },
 221
 222         [NL802154_ATTR_COORDINATOR] = { .type = NLA_NESTED },
 223
 224         [NL802154_ATTR_SCAN_TYPE] =
 225                 NLA_POLICY_RANGE(NLA_U8, NL802154_SCAN_ED, NL802154_SCAN_RIT_PASSIVE),
 226         [NL802154_ATTR_SCAN_CHANNELS] =
 227                 NLA_POLICY_MASK(NLA_U32, GENMASK(IEEE802154_MAX_CHANNEL, 0)),
 228         [NL802154_ATTR_SCAN_PREAMBLE_CODES] = { .type = NLA_REJECT },
 229         [NL802154_ATTR_SCAN_MEAN_PRF] = { .type = NLA_REJECT },
 230         [NL802154_ATTR_SCAN_DURATION] =
 231                 NLA_POLICY_MAX(NLA_U8, IEEE802154_MAX_SCAN_DURATION),
 232         [NL802154_ATTR_SCAN_DONE_REASON] =
 233                 NLA_POLICY_RANGE(NLA_U8, NL802154_SCAN_DONE_REASON_FINISHED,
 234                                  NL802154_SCAN_DONE_REASON_ABORTED),
 235         [NL802154_ATTR_BEACON_INTERVAL] =
 236                 NLA_POLICY_MAX(NLA_U8, IEEE802154_ACTIVE_SCAN_DURATION),
 237         [NL802154_ATTR_MAX_ASSOCIATIONS] = { .type = NLA_U32 },
 238         [NL802154_ATTR_PEER] = { .type = NLA_NESTED },
 239
 240 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
 241         [NL802154_ATTR_SEC_ENABLED] = { .type = NLA_U8, },
 242         [NL802154_ATTR_SEC_OUT_LEVEL] = { .type = NLA_U32, },
 243         [NL802154_ATTR_SEC_OUT_KEY_ID] = { .type = NLA_NESTED, },
 244         [NL802154_ATTR_SEC_FRAME_COUNTER] = { .type = NLA_U32 },
 245
 246         [NL802154_ATTR_SEC_LEVEL] = { .type = NLA_NESTED },
 247         [NL802154_ATTR_SEC_DEVICE] = { .type = NLA_NESTED },
 248         [NL802154_ATTR_SEC_DEVKEY] = { .type = NLA_NESTED },
 249         [NL802154_ATTR_SEC_KEY] = { .type = NLA_NESTED },
 250 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
 251 };
 252
 253 static int
 254 nl802154_prepare_wpan_dev_dump(struct sk_buff *skb,
 255                                struct netlink_callback *cb,
 256                                struct cfg802154_registered_device **rdev,
 257                                struct wpan_dev **wpan_dev)
 258 {
 259         const struct genl_dumpit_info *info = genl_dumpit_info(cb);
 260         int err;
 261
 262         rtnl_lock();
 263
 264         if (!cb->args[0]) {
 265                 *wpan_dev = __cfg802154_wpan_dev_from_attrs(sock_net(skb->sk),
 266                                                             info->info.attrs);
 267                 if (IS_ERR(*wpan_dev)) {
 268                         err = PTR_ERR(*wpan_dev);
 269                         goto out_unlock;
 270                 }
 271                 *rdev = wpan_phy_to_rdev((*wpan_dev)->wpan_phy);
 272                 /* 0 is the first index - add 1 to parse only once */
 273                 cb->args[0] = (*rdev)->wpan_phy_idx + 1;
 274                 cb->args[1] = (*wpan_dev)->identifier;
 275         } else {
 276                 /* subtract the 1 again here */
 277                 struct wpan_phy *wpan_phy = wpan_phy_idx_to_wpan_phy(cb->args[0] - 1);
 278                 struct wpan_dev *tmp;
 279
 280                 if (!wpan_phy) {
 281                         err = -ENODEV;
 282                         goto out_unlock;
 283                 }
 284                 *rdev = wpan_phy_to_rdev(wpan_phy);
 285                 *wpan_dev = NULL;
 286
 287                 list_for_each_entry(tmp, &(*rdev)->wpan_dev_list, list) {
 288                         if (tmp->identifier == cb->args[1]) {
 289                                 *wpan_dev = tmp;
 290                                 break;
 291                         }
 292                 }
 293
 294                 if (!*wpan_dev) {
 295                         err = -ENODEV;
 296                         goto out_unlock;
 297                 }
 298         }
 299
 300         return 0;
 301  out_unlock:
 302         rtnl_unlock();
 303         return err;
 304 }
 305
 306 static void
 307 nl802154_finish_wpan_dev_dump(struct cfg802154_registered_device *rdev)
 308 {
 309         rtnl_unlock();
 310 }
 311
 312 /* message building helper */
 313 static inline void *nl802154hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 314                                     int flags, u8 cmd)
 315 {
 316         /* since there is no private header just add the generic one */
 317         return genlmsg_put(skb, portid, seq, &nl802154_fam, flags, cmd);
 318 }
 319
 320 static int
 321 nl802154_put_flags(struct sk_buff *msg, int attr, u32 mask)
 322 {
 323         struct nlattr *nl_flags = nla_nest_start_noflag(msg, attr);
 324         int i;
 325
 326         if (!nl_flags)
 327                 return -ENOBUFS;
 328
 329         i = 0;
 330         while (mask) {
 331                 if ((mask & 1) && nla_put_flag(msg, i))
 332                         return -ENOBUFS;
 333
 334                 mask >>= 1;
 335                 i++;
 336         }
 337
 338         nla_nest_end(msg, nl_flags);
 339         return 0;
 340 }
 341
 342 static int
 343 nl802154_send_wpan_phy_channels(struct cfg802154_registered_device *rdev,
 344                                 struct sk_buff *msg)
 345 {
 346         struct nlattr *nl_page;
 347         unsigned long page;
 348
 349         nl_page = nla_nest_start_noflag(msg, NL802154_ATTR_CHANNELS_SUPPORTED);
 350         if (!nl_page)
 351                 return -ENOBUFS;
 352
 353         for (page = 0; page <= IEEE802154_MAX_PAGE; page++) {
 354                 if (nla_put_u32(msg, NL802154_ATTR_SUPPORTED_CHANNEL,
 355                                 rdev->wpan_phy.supported.channels[page]))
 356                         return -ENOBUFS;
 357         }
 358         nla_nest_end(msg, nl_page);
 359
 360         return 0;
 361 }
 362
 363 static int
 364 nl802154_put_capabilities(struct sk_buff *msg,
 365                           struct cfg802154_registered_device *rdev)
 366 {
 367         const struct wpan_phy_supported *caps = &rdev->wpan_phy.supported;
 368         struct nlattr *nl_caps, *nl_channels;
 369         int i;
 370
 371         nl_caps = nla_nest_start_noflag(msg, NL802154_ATTR_WPAN_PHY_CAPS);
 372         if (!nl_caps)
 373                 return -ENOBUFS;
 374
 375         nl_channels = nla_nest_start_noflag(msg, NL802154_CAP_ATTR_CHANNELS);
 376         if (!nl_channels)
 377                 return -ENOBUFS;
 378
 379         for (i = 0; i <= IEEE802154_MAX_PAGE; i++) {
 380                 if (caps->channels[i]) {
 381                         if (nl802154_put_flags(msg, i, caps->channels[i]))
 382                                 return -ENOBUFS;
 383                 }
 384         }
 385
 386         nla_nest_end(msg, nl_channels);
 387
 388         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL) {
 389                 struct nlattr *nl_ed_lvls;
 390
 391                 nl_ed_lvls = nla_nest_start_noflag(msg,
 392                                                    NL802154_CAP_ATTR_CCA_ED_LEVELS);
 393                 if (!nl_ed_lvls)
 394                         return -ENOBUFS;
 395
 396                 for (i = 0; i < caps->cca_ed_levels_size; i++) {
 397                         if (nla_put_s32(msg, i, caps->cca_ed_levels[i]))
 398                                 return -ENOBUFS;
 399                 }
 400
 401                 nla_nest_end(msg, nl_ed_lvls);
 402         }
 403
 404         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER) {
 405                 struct nlattr *nl_tx_pwrs;
 406
 407                 nl_tx_pwrs = nla_nest_start_noflag(msg,
 408                                                    NL802154_CAP_ATTR_TX_POWERS);
 409                 if (!nl_tx_pwrs)
 410                         return -ENOBUFS;
 411
 412                 for (i = 0; i < caps->tx_powers_size; i++) {
 413                         if (nla_put_s32(msg, i, caps->tx_powers[i]))
 414                                 return -ENOBUFS;
 415                 }
 416
 417                 nla_nest_end(msg, nl_tx_pwrs);
 418         }
 419
 420         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE) {
 421                 if (nl802154_put_flags(msg, NL802154_CAP_ATTR_CCA_MODES,
 422                                        caps->cca_modes) ||
 423                     nl802154_put_flags(msg, NL802154_CAP_ATTR_CCA_OPTS,
 424                                        caps->cca_opts))
 425                         return -ENOBUFS;
 426         }
 427
 428         if (nla_put_u8(msg, NL802154_CAP_ATTR_MIN_MINBE, caps->min_minbe) ||
 429             nla_put_u8(msg, NL802154_CAP_ATTR_MAX_MINBE, caps->max_minbe) ||
 430             nla_put_u8(msg, NL802154_CAP_ATTR_MIN_MAXBE, caps->min_maxbe) ||
 431             nla_put_u8(msg, NL802154_CAP_ATTR_MAX_MAXBE, caps->max_maxbe) ||
 432             nla_put_u8(msg, NL802154_CAP_ATTR_MIN_CSMA_BACKOFFS,
 433                        caps->min_csma_backoffs) ||
 434             nla_put_u8(msg, NL802154_CAP_ATTR_MAX_CSMA_BACKOFFS,
 435                        caps->max_csma_backoffs) ||
 436             nla_put_s8(msg, NL802154_CAP_ATTR_MIN_FRAME_RETRIES,
 437                        caps->min_frame_retries) ||
 438             nla_put_s8(msg, NL802154_CAP_ATTR_MAX_FRAME_RETRIES,
 439                        caps->max_frame_retries) ||
 440             nl802154_put_flags(msg, NL802154_CAP_ATTR_IFTYPES,
 441                                caps->iftypes) ||
 442             nla_put_u32(msg, NL802154_CAP_ATTR_LBT, caps->lbt))
 443                 return -ENOBUFS;
 444
 445         nla_nest_end(msg, nl_caps);
 446
 447         return 0;
 448 }
 449
 450 static int nl802154_send_wpan_phy(struct cfg802154_registered_device *rdev,
 451                                   enum nl802154_commands cmd,
 452                                   struct sk_buff *msg, u32 portid, u32 seq,
 453                                   int flags)
 454 {
 455         struct nlattr *nl_cmds;
 456         void *hdr;
 457         int i;
 458
 459         hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
 460         if (!hdr)
 461                 return -ENOBUFS;
 462
 463         if (nla_put_u32(msg, NL802154_ATTR_WPAN_PHY, rdev->wpan_phy_idx) ||
 464             nla_put_string(msg, NL802154_ATTR_WPAN_PHY_NAME,
 465                            wpan_phy_name(&rdev->wpan_phy)) ||
 466             nla_put_u32(msg, NL802154_ATTR_GENERATION,
 467                         cfg802154_rdev_list_generation))
 468                 goto nla_put_failure;
 469
 470         if (cmd != NL802154_CMD_NEW_WPAN_PHY)
 471                 goto finish;
 472
 473         /* DUMP PHY PIB */
 474
 475         /* current channel settings */
 476         if (nla_put_u8(msg, NL802154_ATTR_PAGE,
 477                        rdev->wpan_phy.current_page) ||
 478             nla_put_u8(msg, NL802154_ATTR_CHANNEL,
 479                        rdev->wpan_phy.current_channel))
 480                 goto nla_put_failure;
 481
 482         /* TODO remove this behaviour, we still keep support it for a while
 483          * so users can change the behaviour to the new one.
 484          */
 485         if (nl802154_send_wpan_phy_channels(rdev, msg))
 486                 goto nla_put_failure;
 487
 488         /* cca mode */
 489         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE) {
 490                 if (nla_put_u32(msg, NL802154_ATTR_CCA_MODE,
 491                                 rdev->wpan_phy.cca.mode))
 492                         goto nla_put_failure;
 493
 494                 if (rdev->wpan_phy.cca.mode == NL802154_CCA_ENERGY_CARRIER) {
 495                         if (nla_put_u32(msg, NL802154_ATTR_CCA_OPT,
 496                                         rdev->wpan_phy.cca.opt))
 497                                 goto nla_put_failure;
 498                 }
 499         }
 500
 501         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER) {
 502                 if (nla_put_s32(msg, NL802154_ATTR_TX_POWER,
 503                                 rdev->wpan_phy.transmit_power))
 504                         goto nla_put_failure;
 505         }
 506
 507         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL) {
 508                 if (nla_put_s32(msg, NL802154_ATTR_CCA_ED_LEVEL,
 509                                 rdev->wpan_phy.cca_ed_level))
 510                         goto nla_put_failure;
 511         }
 512
 513         if (nl802154_put_capabilities(msg, rdev))
 514                 goto nla_put_failure;
 515
 516         nl_cmds = nla_nest_start_noflag(msg, NL802154_ATTR_SUPPORTED_COMMANDS);
 517         if (!nl_cmds)
 518                 goto nla_put_failure;
 519
 520         i = 0;
 521 #define CMD(op, n)                                                      \
 522         do {                                                            \
 523                 if (rdev->ops->op) {                                    \
 524                         i++;                                            \
 525                         if (nla_put_u32(msg, i, NL802154_CMD_ ## n))    \
 526                                 goto nla_put_failure;                   \
 527                 }                                                       \
 528         } while (0)
 529
 530         CMD(add_virtual_intf, NEW_INTERFACE);
 531         CMD(del_virtual_intf, DEL_INTERFACE);
 532         CMD(set_channel, SET_CHANNEL);
 533         CMD(set_pan_id, SET_PAN_ID);
 534         CMD(set_short_addr, SET_SHORT_ADDR);
 535         CMD(set_backoff_exponent, SET_BACKOFF_EXPONENT);
 536         CMD(set_max_csma_backoffs, SET_MAX_CSMA_BACKOFFS);
 537         CMD(set_max_frame_retries, SET_MAX_FRAME_RETRIES);
 538         CMD(set_lbt_mode, SET_LBT_MODE);
 539         CMD(set_ackreq_default, SET_ACKREQ_DEFAULT);
 540
 541         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER)
 542                 CMD(set_tx_power, SET_TX_POWER);
 543
 544         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL)
 545                 CMD(set_cca_ed_level, SET_CCA_ED_LEVEL);
 546
 547         if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE)
 548                 CMD(set_cca_mode, SET_CCA_MODE);
 549
 550 #undef CMD
 551         nla_nest_end(msg, nl_cmds);
 552
 553 finish:
 554         genlmsg_end(msg, hdr);
 555         return 0;
 556
 557 nla_put_failure:
 558         genlmsg_cancel(msg, hdr);
 559         return -EMSGSIZE;
 560 }
 561
 562 struct nl802154_dump_wpan_phy_state {
 563         s64 filter_wpan_phy;
 564         long start;
 565
 566 };
 567
 568 static int nl802154_dump_wpan_phy_parse(struct sk_buff *skb,
 569                                         struct netlink_callback *cb,
 570                                         struct nl802154_dump_wpan_phy_state *state)
 571 {
 572         const struct genl_dumpit_info *info = genl_dumpit_info(cb);
 573         struct nlattr **tb = info->info.attrs;
 574
 575         if (tb[NL802154_ATTR_WPAN_PHY])
 576                 state->filter_wpan_phy = nla_get_u32(tb[NL802154_ATTR_WPAN_PHY]);
 577         if (tb[NL802154_ATTR_WPAN_DEV])
 578                 state->filter_wpan_phy = nla_get_u64(tb[NL802154_ATTR_WPAN_DEV]) >> 32;
 579         if (tb[NL802154_ATTR_IFINDEX]) {
 580                 struct net_device *netdev;
 581                 struct cfg802154_registered_device *rdev;
 582                 int ifidx = nla_get_u32(tb[NL802154_ATTR_IFINDEX]);
 583
 584                 netdev = __dev_get_by_index(&init_net, ifidx);
 585                 if (!netdev)
 586                         return -ENODEV;
 587                 if (netdev->ieee802154_ptr) {
 588                         rdev = wpan_phy_to_rdev(
 589                                         netdev->ieee802154_ptr->wpan_phy);
 590                         state->filter_wpan_phy = rdev->wpan_phy_idx;
 591                 }
 592         }
 593
 594         return 0;
 595 }
 596
 597 static int
 598 nl802154_dump_wpan_phy(struct sk_buff *skb, struct netlink_callback *cb)
 599 {
 600         int idx = 0, ret;
 601         struct nl802154_dump_wpan_phy_state *state = (void *)cb->args[0];
 602         struct cfg802154_registered_device *rdev;
 603
 604         rtnl_lock();
 605         if (!state) {
 606                 state = kzalloc(sizeof(*state), GFP_KERNEL);
 607                 if (!state) {
 608                         rtnl_unlock();
 609                         return -ENOMEM;
 610                 }
 611                 state->filter_wpan_phy = -1;
 612                 ret = nl802154_dump_wpan_phy_parse(skb, cb, state);
 613                 if (ret) {
 614                         kfree(state);
 615                         rtnl_unlock();
 616                         return ret;
 617                 }
 618                 cb->args[0] = (long)state;
 619         }
 620
 621         list_for_each_entry(rdev, &cfg802154_rdev_list, list) {
 622                 if (!net_eq(wpan_phy_net(&rdev->wpan_phy), sock_net(skb->sk)))
 623                         continue;
 624                 if (++idx <= state->start)
 625                         continue;
 626                 if (state->filter_wpan_phy != -1 &&
 627                     state->filter_wpan_phy != rdev->wpan_phy_idx)
 628                         continue;
 629                 /* attempt to fit multiple wpan_phy data chunks into the skb */
 630                 ret = nl802154_send_wpan_phy(rdev,
 631                                              NL802154_CMD_NEW_WPAN_PHY,
 632                                              skb,
 633                                              NETLINK_CB(cb->skb).portid,
 634                                              cb->nlh->nlmsg_seq, NLM_F_MULTI);
 635                 if (ret < 0) {
 636                         if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
 637                             !skb->len && cb->min_dump_alloc < 4096) {
 638                                 cb->min_dump_alloc = 4096;
 639                                 rtnl_unlock();
 640                                 return 1;
 641                         }
 642                         idx--;
 643                         break;
 644                 }
 645                 break;
 646         }
 647         rtnl_unlock();
 648
 649         state->start = idx;
 650
 651         return skb->len;
 652 }
 653
 654 static int nl802154_dump_wpan_phy_done(struct netlink_callback *cb)
 655 {
 656         kfree((void *)cb->args[0]);
 657         return 0;
 658 }
 659
 660 static int nl802154_get_wpan_phy(struct sk_buff *skb, struct genl_info *info)
 661 {
 662         struct sk_buff *msg;
 663         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 664
 665         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 666         if (!msg)
 667                 return -ENOMEM;
 668
 669         if (nl802154_send_wpan_phy(rdev, NL802154_CMD_NEW_WPAN_PHY, msg,
 670                                    info->snd_portid, info->snd_seq, 0) < 0) {
 671                 nlmsg_free(msg);
 672                 return -ENOBUFS;
 673         }
 674
 675         return genlmsg_reply(msg, info);
 676 }
 677
 678 static inline u64 wpan_dev_id(struct wpan_dev *wpan_dev)
 679 {
 680         return (u64)wpan_dev->identifier |
 681                ((u64)wpan_phy_to_rdev(wpan_dev->wpan_phy)->wpan_phy_idx << 32);
 682 }
 683
 684 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
 685 #include <net/ieee802154_netdev.h>
 686
 687 static int
 688 ieee802154_llsec_send_key_id(struct sk_buff *msg,
 689                              const struct ieee802154_llsec_key_id *desc)
 690 {
 691         struct nlattr *nl_dev_addr;
 692
 693         if (nla_put_u32(msg, NL802154_KEY_ID_ATTR_MODE, desc->mode))
 694                 return -ENOBUFS;
 695
 696         switch (desc->mode) {
 697         case NL802154_KEY_ID_MODE_IMPLICIT:
 698                 nl_dev_addr = nla_nest_start_noflag(msg,
 699                                                     NL802154_KEY_ID_ATTR_IMPLICIT);
 700                 if (!nl_dev_addr)
 701                         return -ENOBUFS;
 702
 703                 if (nla_put_le16(msg, NL802154_DEV_ADDR_ATTR_PAN_ID,
 704                                  desc->device_addr.pan_id) ||
 705                     nla_put_u32(msg,  NL802154_DEV_ADDR_ATTR_MODE,
 706                                 desc->device_addr.mode))
 707                         return -ENOBUFS;
 708
 709                 switch (desc->device_addr.mode) {
 710                 case NL802154_DEV_ADDR_SHORT:
 711                         if (nla_put_le16(msg, NL802154_DEV_ADDR_ATTR_SHORT,
 712                                          desc->device_addr.short_addr))
 713                                 return -ENOBUFS;
 714                         break;
 715                 case NL802154_DEV_ADDR_EXTENDED:
 716                         if (nla_put_le64(msg, NL802154_DEV_ADDR_ATTR_EXTENDED,
 717                                          desc->device_addr.extended_addr,
 718                                          NL802154_DEV_ADDR_ATTR_PAD))
 719                                 return -ENOBUFS;
 720                         break;
 721                 default:
 722                         /* userspace should handle unknown */
 723                         break;
 724                 }
 725
 726                 nla_nest_end(msg, nl_dev_addr);
 727                 break;
 728         case NL802154_KEY_ID_MODE_INDEX:
 729                 break;
 730         case NL802154_KEY_ID_MODE_INDEX_SHORT:
 731                 /* TODO renmae short_source? */
 732                 if (nla_put_le32(msg, NL802154_KEY_ID_ATTR_SOURCE_SHORT,
 733                                  desc->short_source))
 734                         return -ENOBUFS;
 735                 break;
 736         case NL802154_KEY_ID_MODE_INDEX_EXTENDED:
 737                 if (nla_put_le64(msg, NL802154_KEY_ID_ATTR_SOURCE_EXTENDED,
 738                                  desc->extended_source,
 739                                  NL802154_KEY_ID_ATTR_PAD))
 740                         return -ENOBUFS;
 741                 break;
 742         default:
 743                 /* userspace should handle unknown */
 744                 break;
 745         }
 746
 747         /* TODO key_id to key_idx ? Check naming */
 748         if (desc->mode != NL802154_KEY_ID_MODE_IMPLICIT) {
 749                 if (nla_put_u8(msg, NL802154_KEY_ID_ATTR_INDEX, desc->id))
 750                         return -ENOBUFS;
 751         }
 752
 753         return 0;
 754 }
 755
 756 static int nl802154_get_llsec_params(struct sk_buff *msg,
 757                                      struct cfg802154_registered_device *rdev,
 758                                      struct wpan_dev *wpan_dev)
 759 {
 760         struct nlattr *nl_key_id;
 761         struct ieee802154_llsec_params params;
 762         int ret;
 763
 764         ret = rdev_get_llsec_params(rdev, wpan_dev, &params);
 765         if (ret < 0)
 766                 return ret;
 767
 768         if (nla_put_u8(msg, NL802154_ATTR_SEC_ENABLED, params.enabled) ||
 769             nla_put_u32(msg, NL802154_ATTR_SEC_OUT_LEVEL, params.out_level) ||
 770             nla_put_be32(msg, NL802154_ATTR_SEC_FRAME_COUNTER,
 771                          params.frame_counter))
 772                 return -ENOBUFS;
 773
 774         nl_key_id = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_OUT_KEY_ID);
 775         if (!nl_key_id)
 776                 return -ENOBUFS;
 777
 778         ret = ieee802154_llsec_send_key_id(msg, &params.out_key);
 779         if (ret < 0)
 780                 return ret;
 781
 782         nla_nest_end(msg, nl_key_id);
 783
 784         return 0;
 785 }
 786 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
 787
 788 static int
 789 nl802154_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
 790                     struct cfg802154_registered_device *rdev,
 791                     struct wpan_dev *wpan_dev)
 792 {
 793         struct net_device *dev = wpan_dev->netdev;
 794         void *hdr;
 795
 796         hdr = nl802154hdr_put(msg, portid, seq, flags,
 797                               NL802154_CMD_NEW_INTERFACE);
 798         if (!hdr)
 799                 return -1;
 800
 801         if (dev &&
 802             (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex) ||
 803              nla_put_string(msg, NL802154_ATTR_IFNAME, dev->name)))
 804                 goto nla_put_failure;
 805
 806         if (nla_put_u32(msg, NL802154_ATTR_WPAN_PHY, rdev->wpan_phy_idx) ||
 807             nla_put_u32(msg, NL802154_ATTR_IFTYPE, wpan_dev->iftype) ||
 808             nla_put_u64_64bit(msg, NL802154_ATTR_WPAN_DEV,
 809                               wpan_dev_id(wpan_dev), NL802154_ATTR_PAD) ||
 810             nla_put_u32(msg, NL802154_ATTR_GENERATION,
 811                         rdev->devlist_generation ^
 812                         (cfg802154_rdev_list_generation << 2)))
 813                 goto nla_put_failure;
 814
 815         /* address settings */
 816         if (nla_put_le64(msg, NL802154_ATTR_EXTENDED_ADDR,
 817                          wpan_dev->extended_addr,
 818                          NL802154_ATTR_PAD) ||
 819             nla_put_le16(msg, NL802154_ATTR_SHORT_ADDR,
 820                          wpan_dev->short_addr) ||
 821             nla_put_le16(msg, NL802154_ATTR_PAN_ID, wpan_dev->pan_id))
 822                 goto nla_put_failure;
 823
 824         /* ARET handling */
 825         if (nla_put_s8(msg, NL802154_ATTR_MAX_FRAME_RETRIES,
 826                        wpan_dev->frame_retries) ||
 827             nla_put_u8(msg, NL802154_ATTR_MAX_BE, wpan_dev->max_be) ||
 828             nla_put_u8(msg, NL802154_ATTR_MAX_CSMA_BACKOFFS,
 829                        wpan_dev->csma_retries) ||
 830             nla_put_u8(msg, NL802154_ATTR_MIN_BE, wpan_dev->min_be))
 831                 goto nla_put_failure;
 832
 833         /* listen before transmit */
 834         if (nla_put_u8(msg, NL802154_ATTR_LBT_MODE, wpan_dev->lbt))
 835                 goto nla_put_failure;
 836
 837         /* ackreq default behaviour */
 838         if (nla_put_u8(msg, NL802154_ATTR_ACKREQ_DEFAULT, wpan_dev->ackreq))
 839                 goto nla_put_failure;
 840
 841 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
 842         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
 843                 goto out;
 844
 845         if (nl802154_get_llsec_params(msg, rdev, wpan_dev) < 0)
 846                 goto nla_put_failure;
 847
 848 out:
 849 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
 850
 851         genlmsg_end(msg, hdr);
 852         return 0;
 853
 854 nla_put_failure:
 855         genlmsg_cancel(msg, hdr);
 856         return -EMSGSIZE;
 857 }
 858
 859 static int
 860 nl802154_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
 861 {
 862         int wp_idx = 0;
 863         int if_idx = 0;
 864         int wp_start = cb->args[0];
 865         int if_start = cb->args[1];
 866         struct cfg802154_registered_device *rdev;
 867         struct wpan_dev *wpan_dev;
 868
 869         rtnl_lock();
 870         list_for_each_entry(rdev, &cfg802154_rdev_list, list) {
 871                 if (!net_eq(wpan_phy_net(&rdev->wpan_phy), sock_net(skb->sk)))
 872                         continue;
 873                 if (wp_idx < wp_start) {
 874                         wp_idx++;
 875                         continue;
 876                 }
 877                 if_idx = 0;
 878
 879                 list_for_each_entry(wpan_dev, &rdev->wpan_dev_list, list) {
 880                         if (if_idx < if_start) {
 881                                 if_idx++;
 882                                 continue;
 883                         }
 884                         if (nl802154_send_iface(skb, NETLINK_CB(cb->skb).portid,
 885                                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
 886                                                 rdev, wpan_dev) < 0) {
 887                                 goto out;
 888                         }
 889                         if_idx++;
 890                 }
 891
 892                 wp_idx++;
 893         }
 894 out:
 895         rtnl_unlock();
 896
 897         cb->args[0] = wp_idx;
 898         cb->args[1] = if_idx;
 899
 900         return skb->len;
 901 }
 902
 903 static int nl802154_get_interface(struct sk_buff *skb, struct genl_info *info)
 904 {
 905         struct sk_buff *msg;
 906         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 907         struct wpan_dev *wdev = info->user_ptr[1];
 908
 909         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 910         if (!msg)
 911                 return -ENOMEM;
 912
 913         if (nl802154_send_iface(msg, info->snd_portid, info->snd_seq, 0,
 914                                 rdev, wdev) < 0) {
 915                 nlmsg_free(msg);
 916                 return -ENOBUFS;
 917         }
 918
 919         return genlmsg_reply(msg, info);
 920 }
 921
 922 static int nl802154_new_interface(struct sk_buff *skb, struct genl_info *info)
 923 {
 924         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 925         enum nl802154_iftype type = NL802154_IFTYPE_UNSPEC;
 926         __le64 extended_addr = cpu_to_le64(0x0000000000000000ULL);
 927
 928         /* TODO avoid failing a new interface
 929          * creation due to pending removal?
 930          */
 931
 932         if (!info->attrs[NL802154_ATTR_IFNAME])
 933                 return -EINVAL;
 934
 935         if (info->attrs[NL802154_ATTR_IFTYPE]) {
 936                 type = nla_get_u32(info->attrs[NL802154_ATTR_IFTYPE]);
 937                 if (type > NL802154_IFTYPE_MAX ||
 938                     !(rdev->wpan_phy.supported.iftypes & BIT(type)))
 939                         return -EINVAL;
 940         }
 941
 942         if (info->attrs[NL802154_ATTR_EXTENDED_ADDR])
 943                 extended_addr = nla_get_le64(info->attrs[NL802154_ATTR_EXTENDED_ADDR]);
 944
 945         if (!rdev->ops->add_virtual_intf)
 946                 return -EOPNOTSUPP;
 947
 948         return rdev_add_virtual_intf(rdev,
 949                                      nla_data(info->attrs[NL802154_ATTR_IFNAME]),
 950                                      NET_NAME_USER, type, extended_addr);
 951 }
 952
 953 static int nl802154_del_interface(struct sk_buff *skb, struct genl_info *info)
 954 {
 955         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 956         struct wpan_dev *wpan_dev = info->user_ptr[1];
 957
 958         if (!rdev->ops->del_virtual_intf)
 959                 return -EOPNOTSUPP;
 960
 961         /* If we remove a wpan device without a netdev then clear
 962          * user_ptr[1] so that nl802154_post_doit won't dereference it
 963          * to check if it needs to do dev_put(). Otherwise it crashes
 964          * since the wpan_dev has been freed, unlike with a netdev where
 965          * we need the dev_put() for the netdev to really be freed.
 966          */
 967         if (!wpan_dev->netdev)
 968                 info->user_ptr[1] = NULL;
 969
 970         return rdev_del_virtual_intf(rdev, wpan_dev);
 971 }
 972
 973 static int nl802154_set_channel(struct sk_buff *skb, struct genl_info *info)
 974 {
 975         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 976         u8 channel, page;
 977
 978         if (!info->attrs[NL802154_ATTR_PAGE] ||
 979             !info->attrs[NL802154_ATTR_CHANNEL])
 980                 return -EINVAL;
 981
 982         page = nla_get_u8(info->attrs[NL802154_ATTR_PAGE]);
 983         channel = nla_get_u8(info->attrs[NL802154_ATTR_CHANNEL]);
 984
 985         /* check 802.15.4 constraints */
 986         if (!ieee802154_chan_is_valid(&rdev->wpan_phy, page, channel))
 987                 return -EINVAL;
 988
 989         return rdev_set_channel(rdev, page, channel);
 990 }
 991
 992 static int nl802154_set_cca_mode(struct sk_buff *skb, struct genl_info *info)
 993 {
 994         struct cfg802154_registered_device *rdev = info->user_ptr[0];
 995         struct wpan_phy_cca cca;
 996
 997         if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE))
 998                 return -EOPNOTSUPP;
 999
1000         if (!info->attrs[NL802154_ATTR_CCA_MODE])
1001                 return -EINVAL;
1002
1003         cca.mode = nla_get_u32(info->attrs[NL802154_ATTR_CCA_MODE]);
1004         /* checking 802.15.4 constraints */
1005         if (cca.mode < NL802154_CCA_ENERGY ||
1006             cca.mode > NL802154_CCA_ATTR_MAX ||
1007             !(rdev->wpan_phy.supported.cca_modes & BIT(cca.mode)))
1008                 return -EINVAL;
1009
1010         if (cca.mode == NL802154_CCA_ENERGY_CARRIER) {
1011                 if (!info->attrs[NL802154_ATTR_CCA_OPT])
1012                         return -EINVAL;
1013
1014                 cca.opt = nla_get_u32(info->attrs[NL802154_ATTR_CCA_OPT]);
1015                 if (cca.opt > NL802154_CCA_OPT_ATTR_MAX ||
1016                     !(rdev->wpan_phy.supported.cca_opts & BIT(cca.opt)))
1017                         return -EINVAL;
1018         }
1019
1020         return rdev_set_cca_mode(rdev, &cca);
1021 }
1022
1023 static int nl802154_set_cca_ed_level(struct sk_buff *skb, struct genl_info *info)
1024 {
1025         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1026         s32 ed_level;
1027         int i;
1028
1029         if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL))
1030                 return -EOPNOTSUPP;
1031
1032         if (!info->attrs[NL802154_ATTR_CCA_ED_LEVEL])
1033                 return -EINVAL;
1034
1035         ed_level = nla_get_s32(info->attrs[NL802154_ATTR_CCA_ED_LEVEL]);
1036
1037         for (i = 0; i < rdev->wpan_phy.supported.cca_ed_levels_size; i++) {
1038                 if (ed_level == rdev->wpan_phy.supported.cca_ed_levels[i])
1039                         return rdev_set_cca_ed_level(rdev, ed_level);
1040         }
1041
1042         return -EINVAL;
1043 }
1044
1045 static int nl802154_set_tx_power(struct sk_buff *skb, struct genl_info *info)
1046 {
1047         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1048         s32 power;
1049         int i;
1050
1051         if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER))
1052                 return -EOPNOTSUPP;
1053
1054         if (!info->attrs[NL802154_ATTR_TX_POWER])
1055                 return -EINVAL;
1056
1057         power = nla_get_s32(info->attrs[NL802154_ATTR_TX_POWER]);
1058
1059         for (i = 0; i < rdev->wpan_phy.supported.tx_powers_size; i++) {
1060                 if (power == rdev->wpan_phy.supported.tx_powers[i])
1061                         return rdev_set_tx_power(rdev, power);
1062         }
1063
1064         return -EINVAL;
1065 }
1066
1067 static int nl802154_set_pan_id(struct sk_buff *skb, struct genl_info *info)
1068 {
1069         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1070         struct net_device *dev = info->user_ptr[1];
1071         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1072         __le16 pan_id;
1073
1074         /* conflict here while tx/rx calls */
1075         if (netif_running(dev))
1076                 return -EBUSY;
1077
1078         if (wpan_dev->lowpan_dev) {
1079                 if (netif_running(wpan_dev->lowpan_dev))
1080                         return -EBUSY;
1081         }
1082
1083         /* don't change address fields on monitor */
1084         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR ||
1085             !info->attrs[NL802154_ATTR_PAN_ID])
1086                 return -EINVAL;
1087
1088         pan_id = nla_get_le16(info->attrs[NL802154_ATTR_PAN_ID]);
1089
1090         /* Only allow changing the PAN ID when the device has no more
1091          * associations ongoing to avoid confusing peers.
1092          */
1093         if (cfg802154_device_is_associated(wpan_dev)) {
1094                 NL_SET_ERR_MSG(info->extack,
1095                                "Existing associations, changing PAN ID forbidden");
1096                 return -EINVAL;
1097         }
1098
1099         return rdev_set_pan_id(rdev, wpan_dev, pan_id);
1100 }
1101
1102 static int nl802154_set_short_addr(struct sk_buff *skb, struct genl_info *info)
1103 {
1104         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1105         struct net_device *dev = info->user_ptr[1];
1106         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1107         __le16 short_addr;
1108
1109         /* conflict here while tx/rx calls */
1110         if (netif_running(dev))
1111                 return -EBUSY;
1112
1113         if (wpan_dev->lowpan_dev) {
1114                 if (netif_running(wpan_dev->lowpan_dev))
1115                         return -EBUSY;
1116         }
1117
1118         /* don't change address fields on monitor */
1119         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR ||
1120             !info->attrs[NL802154_ATTR_SHORT_ADDR])
1121                 return -EINVAL;
1122
1123         short_addr = nla_get_le16(info->attrs[NL802154_ATTR_SHORT_ADDR]);
1124
1125         /* The short address only has a meaning when part of a PAN, after a
1126          * proper association procedure. However, we want to still offer the
1127          * possibility to create static networks so changing the short address
1128          * is only allowed when not already associated to other devices with
1129          * the official handshake.
1130          */
1131         if (cfg802154_device_is_associated(wpan_dev)) {
1132                 NL_SET_ERR_MSG(info->extack,
1133                                "Existing associations, changing short address forbidden");
1134                 return -EINVAL;
1135         }
1136
1137         return rdev_set_short_addr(rdev, wpan_dev, short_addr);
1138 }
1139
1140 static int
1141 nl802154_set_backoff_exponent(struct sk_buff *skb, struct genl_info *info)
1142 {
1143         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1144         struct net_device *dev = info->user_ptr[1];
1145         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1146         u8 min_be, max_be;
1147
1148         /* should be set on netif open inside phy settings */
1149         if (netif_running(dev))
1150                 return -EBUSY;
1151
1152         if (!info->attrs[NL802154_ATTR_MIN_BE] ||
1153             !info->attrs[NL802154_ATTR_MAX_BE])
1154                 return -EINVAL;
1155
1156         min_be = nla_get_u8(info->attrs[NL802154_ATTR_MIN_BE]);
1157         max_be = nla_get_u8(info->attrs[NL802154_ATTR_MAX_BE]);
1158
1159         /* check 802.15.4 constraints */
1160         if (min_be < rdev->wpan_phy.supported.min_minbe ||
1161             min_be > rdev->wpan_phy.supported.max_minbe ||
1162             max_be < rdev->wpan_phy.supported.min_maxbe ||
1163             max_be > rdev->wpan_phy.supported.max_maxbe ||
1164             min_be > max_be)
1165                 return -EINVAL;
1166
1167         return rdev_set_backoff_exponent(rdev, wpan_dev, min_be, max_be);
1168 }
1169
1170 static int
1171 nl802154_set_max_csma_backoffs(struct sk_buff *skb, struct genl_info *info)
1172 {
1173         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1174         struct net_device *dev = info->user_ptr[1];
1175         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1176         u8 max_csma_backoffs;
1177
1178         /* conflict here while other running iface settings */
1179         if (netif_running(dev))
1180                 return -EBUSY;
1181
1182         if (!info->attrs[NL802154_ATTR_MAX_CSMA_BACKOFFS])
1183                 return -EINVAL;
1184
1185         max_csma_backoffs = nla_get_u8(
1186                         info->attrs[NL802154_ATTR_MAX_CSMA_BACKOFFS]);
1187
1188         /* check 802.15.4 constraints */
1189         if (max_csma_backoffs < rdev->wpan_phy.supported.min_csma_backoffs ||
1190             max_csma_backoffs > rdev->wpan_phy.supported.max_csma_backoffs)
1191                 return -EINVAL;
1192
1193         return rdev_set_max_csma_backoffs(rdev, wpan_dev, max_csma_backoffs);
1194 }
1195
1196 static int
1197 nl802154_set_max_frame_retries(struct sk_buff *skb, struct genl_info *info)
1198 {
1199         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1200         struct net_device *dev = info->user_ptr[1];
1201         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1202         s8 max_frame_retries;
1203
1204         if (netif_running(dev))
1205                 return -EBUSY;
1206
1207         if (!info->attrs[NL802154_ATTR_MAX_FRAME_RETRIES])
1208                 return -EINVAL;
1209
1210         max_frame_retries = nla_get_s8(
1211                         info->attrs[NL802154_ATTR_MAX_FRAME_RETRIES]);
1212
1213         /* check 802.15.4 constraints */
1214         if (max_frame_retries < rdev->wpan_phy.supported.min_frame_retries ||
1215             max_frame_retries > rdev->wpan_phy.supported.max_frame_retries)
1216                 return -EINVAL;
1217
1218         return rdev_set_max_frame_retries(rdev, wpan_dev, max_frame_retries);
1219 }
1220
1221 static int nl802154_set_lbt_mode(struct sk_buff *skb, struct genl_info *info)
1222 {
1223         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1224         struct net_device *dev = info->user_ptr[1];
1225         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1226         int mode;
1227
1228         if (netif_running(dev))
1229                 return -EBUSY;
1230
1231         if (!info->attrs[NL802154_ATTR_LBT_MODE])
1232                 return -EINVAL;
1233
1234         mode = nla_get_u8(info->attrs[NL802154_ATTR_LBT_MODE]);
1235
1236         if (mode != 0 && mode != 1)
1237                 return -EINVAL;
1238
1239         if (!wpan_phy_supported_bool(mode, rdev->wpan_phy.supported.lbt))
1240                 return -EINVAL;
1241
1242         return rdev_set_lbt_mode(rdev, wpan_dev, mode);
1243 }
1244
1245 static int
1246 nl802154_set_ackreq_default(struct sk_buff *skb, struct genl_info *info)
1247 {
1248         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1249         struct net_device *dev = info->user_ptr[1];
1250         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1251         int ackreq;
1252
1253         if (netif_running(dev))
1254                 return -EBUSY;
1255
1256         if (!info->attrs[NL802154_ATTR_ACKREQ_DEFAULT])
1257                 return -EINVAL;
1258
1259         ackreq = nla_get_u8(info->attrs[NL802154_ATTR_ACKREQ_DEFAULT]);
1260
1261         if (ackreq != 0 && ackreq != 1)
1262                 return -EINVAL;
1263
1264         return rdev_set_ackreq_default(rdev, wpan_dev, ackreq);
1265 }
1266
1267 static int nl802154_wpan_phy_netns(struct sk_buff *skb, struct genl_info *info)
1268 {
1269         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1270         struct net *net;
1271         int err;
1272
1273         if (info->attrs[NL802154_ATTR_PID]) {
1274                 u32 pid = nla_get_u32(info->attrs[NL802154_ATTR_PID]);
1275
1276                 net = get_net_ns_by_pid(pid);
1277         } else if (info->attrs[NL802154_ATTR_NETNS_FD]) {
1278                 u32 fd = nla_get_u32(info->attrs[NL802154_ATTR_NETNS_FD]);
1279
1280                 net = get_net_ns_by_fd(fd);
1281         } else {
1282                 return -EINVAL;
1283         }
1284
1285         if (IS_ERR(net))
1286                 return PTR_ERR(net);
1287
1288         err = 0;
1289
1290         /* check if anything to do */
1291         if (!net_eq(wpan_phy_net(&rdev->wpan_phy), net))
1292                 err = cfg802154_switch_netns(rdev, net);
1293
1294         put_net(net);
1295         return err;
1296 }
1297
1298 static int nl802154_prep_scan_event_msg(struct sk_buff *msg,
1299                                         struct cfg802154_registered_device *rdev,
1300                                         struct wpan_dev *wpan_dev,
1301                                         u32 portid, u32 seq, int flags, u8 cmd,
1302                                         struct ieee802154_coord_desc *desc)
1303 {
1304         struct nlattr *nla;
1305         void *hdr;
1306
1307         hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
1308         if (!hdr)
1309                 return -ENOBUFS;
1310
1311         if (nla_put_u32(msg, NL802154_ATTR_WPAN_PHY, rdev->wpan_phy_idx))
1312                 goto nla_put_failure;
1313
1314         if (wpan_dev->netdev &&
1315             nla_put_u32(msg, NL802154_ATTR_IFINDEX, wpan_dev->netdev->ifindex))
1316                 goto nla_put_failure;
1317
1318         if (nla_put_u64_64bit(msg, NL802154_ATTR_WPAN_DEV,
1319                               wpan_dev_id(wpan_dev), NL802154_ATTR_PAD))
1320                 goto nla_put_failure;
1321
1322         nla = nla_nest_start_noflag(msg, NL802154_ATTR_COORDINATOR);
1323         if (!nla)
1324                 goto nla_put_failure;
1325
1326         if (nla_put(msg, NL802154_COORD_PANID, IEEE802154_PAN_ID_LEN,
1327                     &desc->addr.pan_id))
1328                 goto nla_put_failure;
1329
1330         if (desc->addr.mode == IEEE802154_ADDR_SHORT) {
1331                 if (nla_put(msg, NL802154_COORD_ADDR,
1332                             IEEE802154_SHORT_ADDR_LEN,
1333                             &desc->addr.short_addr))
1334                         goto nla_put_failure;
1335         } else {
1336                 if (nla_put(msg, NL802154_COORD_ADDR,
1337                             IEEE802154_EXTENDED_ADDR_LEN,
1338                             &desc->addr.extended_addr))
1339                         goto nla_put_failure;
1340         }
1341
1342         if (nla_put_u8(msg, NL802154_COORD_CHANNEL, desc->channel))
1343                 goto nla_put_failure;
1344
1345         if (nla_put_u8(msg, NL802154_COORD_PAGE, desc->page))
1346                 goto nla_put_failure;
1347
1348         if (nla_put_u16(msg, NL802154_COORD_SUPERFRAME_SPEC,
1349                         desc->superframe_spec))
1350                 goto nla_put_failure;
1351
1352         if (nla_put_u8(msg, NL802154_COORD_LINK_QUALITY, desc->link_quality))
1353                 goto nla_put_failure;
1354
1355         if (desc->gts_permit && nla_put_flag(msg, NL802154_COORD_GTS_PERMIT))
1356                 goto nla_put_failure;
1357
1358         /* TODO: NL802154_COORD_PAYLOAD_DATA if any */
1359
1360         nla_nest_end(msg, nla);
1361
1362         genlmsg_end(msg, hdr);
1363
1364         return 0;
1365
1366  nla_put_failure:
1367         genlmsg_cancel(msg, hdr);
1368
1369         return -EMSGSIZE;
1370 }
1371
1372 int nl802154_scan_event(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
1373                         struct ieee802154_coord_desc *desc)
1374 {
1375         struct cfg802154_registered_device *rdev = wpan_phy_to_rdev(wpan_phy);
1376         struct sk_buff *msg;
1377         int ret;
1378
1379         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1380         if (!msg)
1381                 return -ENOMEM;
1382
1383         ret = nl802154_prep_scan_event_msg(msg, rdev, wpan_dev, 0, 0, 0,
1384                                            NL802154_CMD_SCAN_EVENT,
1385                                            desc);
1386         if (ret < 0) {
1387                 nlmsg_free(msg);
1388                 return ret;
1389         }
1390
1391         return genlmsg_multicast_netns(&nl802154_fam, wpan_phy_net(wpan_phy),
1392                                        msg, 0, NL802154_MCGRP_SCAN, GFP_ATOMIC);
1393 }
1394 EXPORT_SYMBOL_GPL(nl802154_scan_event);
1395
1396 static int nl802154_trigger_scan(struct sk_buff *skb, struct genl_info *info)
1397 {
1398         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1399         struct net_device *dev = info->user_ptr[1];
1400         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1401         struct wpan_phy *wpan_phy = &rdev->wpan_phy;
1402         struct cfg802154_scan_request *request;
1403         u8 type;
1404         int err;
1405
1406         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) {
1407                 NL_SET_ERR_MSG(info->extack, "Monitors are not allowed to perform scans");
1408                 return -EOPNOTSUPP;
1409         }
1410
1411         if (!info->attrs[NL802154_ATTR_SCAN_TYPE]) {
1412                 NL_SET_ERR_MSG(info->extack, "Malformed request, missing scan type");
1413                 return -EINVAL;
1414         }
1415
1416         if (wpan_phy->flags & WPAN_PHY_FLAG_DATAGRAMS_ONLY) {
1417                 NL_SET_ERR_MSG(info->extack, "PHY only supports datagrams");
1418                 return -EOPNOTSUPP;
1419         }
1420
1421         request = kzalloc(sizeof(*request), GFP_KERNEL);
1422         if (!request)
1423                 return -ENOMEM;
1424
1425         request->wpan_dev = wpan_dev;
1426         request->wpan_phy = wpan_phy;
1427
1428         type = nla_get_u8(info->attrs[NL802154_ATTR_SCAN_TYPE]);
1429         switch (type) {
1430         case NL802154_SCAN_ACTIVE:
1431         case NL802154_SCAN_PASSIVE:
1432                 request->type = type;
1433                 break;
1434         default:
1435                 NL_SET_ERR_MSG_FMT(info->extack, "Unsupported scan type: %d", type);
1436                 err = -EINVAL;
1437                 goto free_request;
1438         }
1439
1440         /* Use current page by default */
1441         if (info->attrs[NL802154_ATTR_PAGE])
1442                 request->page = nla_get_u8(info->attrs[NL802154_ATTR_PAGE]);
1443         else
1444                 request->page = wpan_phy->current_page;
1445
1446         /* Scan all supported channels by default */
1447         if (info->attrs[NL802154_ATTR_SCAN_CHANNELS])
1448                 request->channels = nla_get_u32(info->attrs[NL802154_ATTR_SCAN_CHANNELS]);
1449         else
1450                 request->channels = wpan_phy->supported.channels[request->page];
1451
1452         /* Use maximum duration order by default */
1453         if (info->attrs[NL802154_ATTR_SCAN_DURATION])
1454                 request->duration = nla_get_u8(info->attrs[NL802154_ATTR_SCAN_DURATION]);
1455         else
1456                 request->duration = IEEE802154_MAX_SCAN_DURATION;
1457
1458         err = rdev_trigger_scan(rdev, request);
1459         if (err) {
1460                 pr_err("Failure starting scanning (%d)\n", err);
1461                 goto free_request;
1462         }
1463
1464         return 0;
1465
1466 free_request:
1467         kfree(request);
1468
1469         return err;
1470 }
1471
1472 static int nl802154_prep_scan_msg(struct sk_buff *msg,
1473                                   struct cfg802154_registered_device *rdev,
1474                                   struct wpan_dev *wpan_dev, u32 portid,
1475                                   u32 seq, int flags, u8 cmd, u8 arg)
1476 {
1477         void *hdr;
1478
1479         hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
1480         if (!hdr)
1481                 return -ENOBUFS;
1482
1483         if (nla_put_u32(msg, NL802154_ATTR_WPAN_PHY, rdev->wpan_phy_idx))
1484                 goto nla_put_failure;
1485
1486         if (wpan_dev->netdev &&
1487             nla_put_u32(msg, NL802154_ATTR_IFINDEX, wpan_dev->netdev->ifindex))
1488                 goto nla_put_failure;
1489
1490         if (nla_put_u64_64bit(msg, NL802154_ATTR_WPAN_DEV,
1491                               wpan_dev_id(wpan_dev), NL802154_ATTR_PAD))
1492                 goto nla_put_failure;
1493
1494         if (cmd == NL802154_CMD_SCAN_DONE &&
1495             nla_put_u8(msg, NL802154_ATTR_SCAN_DONE_REASON, arg))
1496                 goto nla_put_failure;
1497
1498         genlmsg_end(msg, hdr);
1499
1500         return 0;
1501
1502 nla_put_failure:
1503         genlmsg_cancel(msg, hdr);
1504
1505         return -EMSGSIZE;
1506 }
1507
1508 static int nl802154_send_scan_msg(struct cfg802154_registered_device *rdev,
1509                                   struct wpan_dev *wpan_dev, u8 cmd, u8 arg)
1510 {
1511         struct sk_buff *msg;
1512         int ret;
1513
1514         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1515         if (!msg)
1516                 return -ENOMEM;
1517
1518         ret = nl802154_prep_scan_msg(msg, rdev, wpan_dev, 0, 0, 0, cmd, arg);
1519         if (ret < 0) {
1520                 nlmsg_free(msg);
1521                 return ret;
1522         }
1523
1524         return genlmsg_multicast_netns(&nl802154_fam,
1525                                        wpan_phy_net(&rdev->wpan_phy), msg, 0,
1526                                        NL802154_MCGRP_SCAN, GFP_KERNEL);
1527 }
1528
1529 int nl802154_scan_started(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev)
1530 {
1531         struct cfg802154_registered_device *rdev = wpan_phy_to_rdev(wpan_phy);
1532         int err;
1533
1534         /* Ignore errors when there are no listeners */
1535         err = nl802154_send_scan_msg(rdev, wpan_dev, NL802154_CMD_TRIGGER_SCAN, 0);
1536         if (err == -ESRCH)
1537                 err = 0;
1538
1539         return err;
1540 }
1541 EXPORT_SYMBOL_GPL(nl802154_scan_started);
1542
1543 int nl802154_scan_done(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
1544                        enum nl802154_scan_done_reasons reason)
1545 {
1546         struct cfg802154_registered_device *rdev = wpan_phy_to_rdev(wpan_phy);
1547         int err;
1548
1549         /* Ignore errors when there are no listeners */
1550         err = nl802154_send_scan_msg(rdev, wpan_dev, NL802154_CMD_SCAN_DONE, reason);
1551         if (err == -ESRCH)
1552                 err = 0;
1553
1554         return err;
1555 }
1556 EXPORT_SYMBOL_GPL(nl802154_scan_done);
1557
1558 static int nl802154_abort_scan(struct sk_buff *skb, struct genl_info *info)
1559 {
1560         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1561         struct net_device *dev = info->user_ptr[1];
1562         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1563
1564         /* Resources are released in the notification helper above */
1565         return rdev_abort_scan(rdev, wpan_dev);
1566 }
1567
1568 static int
1569 nl802154_send_beacons(struct sk_buff *skb, struct genl_info *info)
1570 {
1571         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1572         struct net_device *dev = info->user_ptr[1];
1573         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1574         struct wpan_phy *wpan_phy = &rdev->wpan_phy;
1575         struct cfg802154_beacon_request *request;
1576         int err;
1577
1578         if (wpan_dev->iftype != NL802154_IFTYPE_COORD) {
1579                 NL_SET_ERR_MSG(info->extack, "Only coordinators can send beacons");
1580                 return -EOPNOTSUPP;
1581         }
1582
1583         if (wpan_dev->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST)) {
1584                 NL_SET_ERR_MSG(info->extack, "Device is not part of any PAN");
1585                 return -EPERM;
1586         }
1587
1588         if (wpan_phy->flags & WPAN_PHY_FLAG_DATAGRAMS_ONLY) {
1589                 NL_SET_ERR_MSG(info->extack, "PHY only supports datagrams");
1590                 return -EOPNOTSUPP;
1591         }
1592
1593         request = kzalloc(sizeof(*request), GFP_KERNEL);
1594         if (!request)
1595                 return -ENOMEM;
1596
1597         request->wpan_dev = wpan_dev;
1598         request->wpan_phy = wpan_phy;
1599
1600         /* Use maximum duration order by default */
1601         if (info->attrs[NL802154_ATTR_BEACON_INTERVAL])
1602                 request->interval = nla_get_u8(info->attrs[NL802154_ATTR_BEACON_INTERVAL]);
1603         else
1604                 request->interval = IEEE802154_MAX_SCAN_DURATION;
1605
1606         err = rdev_send_beacons(rdev, request);
1607         if (err) {
1608                 pr_err("Failure starting sending beacons (%d)\n", err);
1609                 goto free_request;
1610         }
1611
1612         return 0;
1613
1614 free_request:
1615         kfree(request);
1616
1617         return err;
1618 }
1619
1620 void nl802154_beaconing_done(struct wpan_dev *wpan_dev)
1621 {
1622         /* NOP */
1623 }
1624 EXPORT_SYMBOL_GPL(nl802154_beaconing_done);
1625
1626 static int
1627 nl802154_stop_beacons(struct sk_buff *skb, struct genl_info *info)
1628 {
1629         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1630         struct net_device *dev = info->user_ptr[1];
1631         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1632
1633         /* Resources are released in the notification helper above */
1634         return rdev_stop_beacons(rdev, wpan_dev);
1635 }
1636
1637 static int nl802154_associate(struct sk_buff *skb, struct genl_info *info)
1638 {
1639         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1640         struct net_device *dev = info->user_ptr[1];
1641         struct wpan_dev *wpan_dev;
1642         struct wpan_phy *wpan_phy;
1643         struct ieee802154_addr coord;
1644         int err;
1645
1646         wpan_dev = dev->ieee802154_ptr;
1647         wpan_phy = &rdev->wpan_phy;
1648
1649         if (wpan_phy->flags & WPAN_PHY_FLAG_DATAGRAMS_ONLY) {
1650                 NL_SET_ERR_MSG(info->extack, "PHY only supports datagrams");
1651                 return -EOPNOTSUPP;
1652         }
1653
1654         if (!info->attrs[NL802154_ATTR_PAN_ID] ||
1655             !info->attrs[NL802154_ATTR_EXTENDED_ADDR])
1656                 return -EINVAL;
1657
1658         coord.pan_id = nla_get_le16(info->attrs[NL802154_ATTR_PAN_ID]);
1659         coord.mode = IEEE802154_ADDR_LONG;
1660         coord.extended_addr = nla_get_le64(info->attrs[NL802154_ATTR_EXTENDED_ADDR]);
1661
1662         mutex_lock(&wpan_dev->association_lock);
1663         err = rdev_associate(rdev, wpan_dev, &coord);
1664         mutex_unlock(&wpan_dev->association_lock);
1665         if (err)
1666                 pr_err("Association with PAN ID 0x%x failed (%d)\n",
1667                        le16_to_cpu(coord.pan_id), err);
1668
1669         return err;
1670 }
1671
1672 static int nl802154_disassociate(struct sk_buff *skb, struct genl_info *info)
1673 {
1674         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1675         struct net_device *dev = info->user_ptr[1];
1676         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1677         struct wpan_phy *wpan_phy = &rdev->wpan_phy;
1678         struct ieee802154_addr target;
1679
1680         if (wpan_phy->flags & WPAN_PHY_FLAG_DATAGRAMS_ONLY) {
1681                 NL_SET_ERR_MSG(info->extack, "PHY only supports datagrams");
1682                 return -EOPNOTSUPP;
1683         }
1684
1685         target.pan_id = wpan_dev->pan_id;
1686
1687         if (info->attrs[NL802154_ATTR_EXTENDED_ADDR]) {
1688                 target.mode = IEEE802154_ADDR_LONG;
1689                 target.extended_addr = nla_get_le64(info->attrs[NL802154_ATTR_EXTENDED_ADDR]);
1690         } else if (info->attrs[NL802154_ATTR_SHORT_ADDR]) {
1691                 target.mode = IEEE802154_ADDR_SHORT;
1692                 target.short_addr = nla_get_le16(info->attrs[NL802154_ATTR_SHORT_ADDR]);
1693         } else {
1694                 NL_SET_ERR_MSG(info->extack, "Device address is missing");
1695                 return -EINVAL;
1696         }
1697
1698         mutex_lock(&wpan_dev->association_lock);
1699         rdev_disassociate(rdev, wpan_dev, &target);
1700         mutex_unlock(&wpan_dev->association_lock);
1701
1702         return 0;
1703 }
1704
1705 static int nl802154_set_max_associations(struct sk_buff *skb, struct genl_info *info)
1706 {
1707         struct net_device *dev = info->user_ptr[1];
1708         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1709         unsigned int max_assoc;
1710
1711         if (!info->attrs[NL802154_ATTR_MAX_ASSOCIATIONS]) {
1712                 NL_SET_ERR_MSG(info->extack, "No maximum number of association given");
1713                 return -EINVAL;
1714         }
1715
1716         max_assoc = nla_get_u32(info->attrs[NL802154_ATTR_MAX_ASSOCIATIONS]);
1717
1718         mutex_lock(&wpan_dev->association_lock);
1719         cfg802154_set_max_associations(wpan_dev, max_assoc);
1720         mutex_unlock(&wpan_dev->association_lock);
1721
1722         return 0;
1723 }
1724
1725 static int nl802154_send_peer_info(struct sk_buff *msg,
1726                                    struct netlink_callback *cb,
1727                                    u32 seq, int flags,
1728                                    struct cfg802154_registered_device *rdev,
1729                                    struct wpan_dev *wpan_dev,
1730                                    struct ieee802154_pan_device *peer,
1731                                    enum nl802154_peer_type type)
1732 {
1733         struct nlattr *nla;
1734         void *hdr;
1735
1736         ASSERT_RTNL();
1737
1738         hdr = nl802154hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
1739                               NL802154_CMD_LIST_ASSOCIATIONS);
1740         if (!hdr)
1741                 return -ENOBUFS;
1742
1743         genl_dump_check_consistent(cb, hdr);
1744
1745         nla = nla_nest_start_noflag(msg, NL802154_ATTR_PEER);
1746         if (!nla)
1747                 goto nla_put_failure;
1748
1749         if (nla_put_u8(msg, NL802154_DEV_ADDR_ATTR_PEER_TYPE, type))
1750                 goto nla_put_failure;
1751
1752         if (nla_put_u8(msg, NL802154_DEV_ADDR_ATTR_MODE, peer->mode))
1753                 goto nla_put_failure;
1754
1755         if (nla_put(msg, NL802154_DEV_ADDR_ATTR_SHORT,
1756                     IEEE802154_SHORT_ADDR_LEN, &peer->short_addr))
1757                 goto nla_put_failure;
1758
1759         if (nla_put(msg, NL802154_DEV_ADDR_ATTR_EXTENDED,
1760                     IEEE802154_EXTENDED_ADDR_LEN, &peer->extended_addr))
1761                 goto nla_put_failure;
1762
1763         nla_nest_end(msg, nla);
1764
1765         genlmsg_end(msg, hdr);
1766
1767         return 0;
1768
1769  nla_put_failure:
1770         genlmsg_cancel(msg, hdr);
1771         return -EMSGSIZE;
1772 }
1773
1774 static int nl802154_list_associations(struct sk_buff *skb,
1775                                       struct netlink_callback *cb)
1776 {
1777         struct cfg802154_registered_device *rdev;
1778         struct ieee802154_pan_device *child;
1779         struct wpan_dev *wpan_dev;
1780         int err;
1781
1782         err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev);
1783         if (err)
1784                 return err;
1785
1786         mutex_lock(&wpan_dev->association_lock);
1787
1788         if (cb->args[2])
1789                 goto out;
1790
1791         if (wpan_dev->parent) {
1792                 err = nl802154_send_peer_info(skb, cb, cb->nlh->nlmsg_seq,
1793                                               NLM_F_MULTI, rdev, wpan_dev,
1794                                               wpan_dev->parent,
1795                                               NL802154_PEER_TYPE_PARENT);
1796                 if (err < 0)
1797                         goto out_err;
1798         }
1799
1800         list_for_each_entry(child, &wpan_dev->children, node) {
1801                 err = nl802154_send_peer_info(skb, cb, cb->nlh->nlmsg_seq,
1802                                               NLM_F_MULTI, rdev, wpan_dev,
1803                                               child,
1804                                               NL802154_PEER_TYPE_CHILD);
1805                 if (err < 0)
1806                         goto out_err;
1807         }
1808
1809         cb->args[2] = 1;
1810 out:
1811         err = skb->len;
1812 out_err:
1813         mutex_unlock(&wpan_dev->association_lock);
1814
1815         nl802154_finish_wpan_dev_dump(rdev);
1816
1817         return err;
1818 }
1819
1820 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
1821 static const struct nla_policy nl802154_dev_addr_policy[NL802154_DEV_ADDR_ATTR_MAX + 1] = {
1822         [NL802154_DEV_ADDR_ATTR_PAN_ID] = { .type = NLA_U16 },
1823         [NL802154_DEV_ADDR_ATTR_MODE] = { .type = NLA_U32 },
1824         [NL802154_DEV_ADDR_ATTR_SHORT] = { .type = NLA_U16 },
1825         [NL802154_DEV_ADDR_ATTR_EXTENDED] = { .type = NLA_U64 },
1826 };
1827
1828 static int
1829 ieee802154_llsec_parse_dev_addr(struct nlattr *nla,
1830                                 struct ieee802154_addr *addr)
1831 {
1832         struct nlattr *attrs[NL802154_DEV_ADDR_ATTR_MAX + 1];
1833
1834         if (!nla || nla_parse_nested_deprecated(attrs, NL802154_DEV_ADDR_ATTR_MAX, nla, nl802154_dev_addr_policy, NULL))
1835                 return -EINVAL;
1836
1837         if (!attrs[NL802154_DEV_ADDR_ATTR_PAN_ID] || !attrs[NL802154_DEV_ADDR_ATTR_MODE])
1838                 return -EINVAL;
1839
1840         addr->pan_id = nla_get_le16(attrs[NL802154_DEV_ADDR_ATTR_PAN_ID]);
1841         addr->mode = nla_get_u32(attrs[NL802154_DEV_ADDR_ATTR_MODE]);
1842         switch (addr->mode) {
1843         case NL802154_DEV_ADDR_SHORT:
1844                 if (!attrs[NL802154_DEV_ADDR_ATTR_SHORT])
1845                         return -EINVAL;
1846                 addr->short_addr = nla_get_le16(attrs[NL802154_DEV_ADDR_ATTR_SHORT]);
1847                 break;
1848         case NL802154_DEV_ADDR_EXTENDED:
1849                 if (!attrs[NL802154_DEV_ADDR_ATTR_EXTENDED])
1850                         return -EINVAL;
1851                 addr->extended_addr = nla_get_le64(attrs[NL802154_DEV_ADDR_ATTR_EXTENDED]);
1852                 break;
1853         default:
1854                 return -EINVAL;
1855         }
1856
1857         return 0;
1858 }
1859
1860 static const struct nla_policy nl802154_key_id_policy[NL802154_KEY_ID_ATTR_MAX + 1] = {
1861         [NL802154_KEY_ID_ATTR_MODE] = { .type = NLA_U32 },
1862         [NL802154_KEY_ID_ATTR_INDEX] = { .type = NLA_U8 },
1863         [NL802154_KEY_ID_ATTR_IMPLICIT] = { .type = NLA_NESTED },
1864         [NL802154_KEY_ID_ATTR_SOURCE_SHORT] = { .type = NLA_U32 },
1865         [NL802154_KEY_ID_ATTR_SOURCE_EXTENDED] = { .type = NLA_U64 },
1866 };
1867
1868 static int
1869 ieee802154_llsec_parse_key_id(struct nlattr *nla,
1870                               struct ieee802154_llsec_key_id *desc)
1871 {
1872         struct nlattr *attrs[NL802154_KEY_ID_ATTR_MAX + 1];
1873
1874         if (!nla || nla_parse_nested_deprecated(attrs, NL802154_KEY_ID_ATTR_MAX, nla, nl802154_key_id_policy, NULL))
1875                 return -EINVAL;
1876
1877         if (!attrs[NL802154_KEY_ID_ATTR_MODE])
1878                 return -EINVAL;
1879
1880         desc->mode = nla_get_u32(attrs[NL802154_KEY_ID_ATTR_MODE]);
1881         switch (desc->mode) {
1882         case NL802154_KEY_ID_MODE_IMPLICIT:
1883                 if (!attrs[NL802154_KEY_ID_ATTR_IMPLICIT])
1884                         return -EINVAL;
1885
1886                 if (ieee802154_llsec_parse_dev_addr(attrs[NL802154_KEY_ID_ATTR_IMPLICIT],
1887                                                     &desc->device_addr) < 0)
1888                         return -EINVAL;
1889                 break;
1890         case NL802154_KEY_ID_MODE_INDEX:
1891                 break;
1892         case NL802154_KEY_ID_MODE_INDEX_SHORT:
1893                 if (!attrs[NL802154_KEY_ID_ATTR_SOURCE_SHORT])
1894                         return -EINVAL;
1895
1896                 desc->short_source = nla_get_le32(attrs[NL802154_KEY_ID_ATTR_SOURCE_SHORT]);
1897                 break;
1898         case NL802154_KEY_ID_MODE_INDEX_EXTENDED:
1899                 if (!attrs[NL802154_KEY_ID_ATTR_SOURCE_EXTENDED])
1900                         return -EINVAL;
1901
1902                 desc->extended_source = nla_get_le64(attrs[NL802154_KEY_ID_ATTR_SOURCE_EXTENDED]);
1903                 break;
1904         default:
1905                 return -EINVAL;
1906         }
1907
1908         if (desc->mode != NL802154_KEY_ID_MODE_IMPLICIT) {
1909                 if (!attrs[NL802154_KEY_ID_ATTR_INDEX])
1910                         return -EINVAL;
1911
1912                 /* TODO change id to idx */
1913                 desc->id = nla_get_u8(attrs[NL802154_KEY_ID_ATTR_INDEX]);
1914         }
1915
1916         return 0;
1917 }
1918
1919 static int nl802154_set_llsec_params(struct sk_buff *skb,
1920                                      struct genl_info *info)
1921 {
1922         struct cfg802154_registered_device *rdev = info->user_ptr[0];
1923         struct net_device *dev = info->user_ptr[1];
1924         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1925         struct ieee802154_llsec_params params;
1926         u32 changed = 0;
1927         int ret;
1928
1929         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
1930                 return -EOPNOTSUPP;
1931
1932         if (info->attrs[NL802154_ATTR_SEC_ENABLED]) {
1933                 u8 enabled;
1934
1935                 enabled = nla_get_u8(info->attrs[NL802154_ATTR_SEC_ENABLED]);
1936                 if (enabled != 0 && enabled != 1)
1937                         return -EINVAL;
1938
1939                 params.enabled = nla_get_u8(info->attrs[NL802154_ATTR_SEC_ENABLED]);
1940                 changed |= IEEE802154_LLSEC_PARAM_ENABLED;
1941         }
1942
1943         if (info->attrs[NL802154_ATTR_SEC_OUT_KEY_ID]) {
1944                 ret = ieee802154_llsec_parse_key_id(info->attrs[NL802154_ATTR_SEC_OUT_KEY_ID],
1945                                                     &params.out_key);
1946                 if (ret < 0)
1947                         return ret;
1948
1949                 changed |= IEEE802154_LLSEC_PARAM_OUT_KEY;
1950         }
1951
1952         if (info->attrs[NL802154_ATTR_SEC_OUT_LEVEL]) {
1953                 params.out_level = nla_get_u32(info->attrs[NL802154_ATTR_SEC_OUT_LEVEL]);
1954                 if (params.out_level > NL802154_SECLEVEL_MAX)
1955                         return -EINVAL;
1956
1957                 changed |= IEEE802154_LLSEC_PARAM_OUT_LEVEL;
1958         }
1959
1960         if (info->attrs[NL802154_ATTR_SEC_FRAME_COUNTER]) {
1961                 params.frame_counter = nla_get_be32(info->attrs[NL802154_ATTR_SEC_FRAME_COUNTER]);
1962                 changed |= IEEE802154_LLSEC_PARAM_FRAME_COUNTER;
1963         }
1964
1965         return rdev_set_llsec_params(rdev, wpan_dev, &params, changed);
1966 }
1967
1968 static int nl802154_send_key(struct sk_buff *msg, u32 cmd, u32 portid,
1969                              u32 seq, int flags,
1970                              struct cfg802154_registered_device *rdev,
1971                              struct net_device *dev,
1972                              const struct ieee802154_llsec_key_entry *key)
1973 {
1974         void *hdr;
1975         u32 commands[NL802154_CMD_FRAME_NR_IDS / 32];
1976         struct nlattr *nl_key, *nl_key_id;
1977
1978         hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
1979         if (!hdr)
1980                 return -ENOBUFS;
1981
1982         if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex))
1983                 goto nla_put_failure;
1984
1985         nl_key = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_KEY);
1986         if (!nl_key)
1987                 goto nla_put_failure;
1988
1989         nl_key_id = nla_nest_start_noflag(msg, NL802154_KEY_ATTR_ID);
1990         if (!nl_key_id)
1991                 goto nla_put_failure;
1992
1993         if (ieee802154_llsec_send_key_id(msg, &key->id) < 0)
1994                 goto nla_put_failure;
1995
1996         nla_nest_end(msg, nl_key_id);
1997
1998         if (nla_put_u8(msg, NL802154_KEY_ATTR_USAGE_FRAMES,
1999                        key->key->frame_types))
2000                 goto nla_put_failure;
2001
2002         if (key->key->frame_types & BIT(NL802154_FRAME_CMD)) {
2003                 /* TODO for each nested */
2004                 memset(commands, 0, sizeof(commands));
2005                 commands[7] = key->key->cmd_frame_ids;
2006                 if (nla_put(msg, NL802154_KEY_ATTR_USAGE_CMDS,
2007                             sizeof(commands), commands))
2008                         goto nla_put_failure;
2009         }
2010
2011         if (nla_put(msg, NL802154_KEY_ATTR_BYTES, NL802154_KEY_SIZE,
2012                     key->key->key))
2013                 goto nla_put_failure;
2014
2015         nla_nest_end(msg, nl_key);
2016         genlmsg_end(msg, hdr);
2017
2018         return 0;
2019
2020 nla_put_failure:
2021         genlmsg_cancel(msg, hdr);
2022         return -EMSGSIZE;
2023 }
2024
2025 static int
2026 nl802154_dump_llsec_key(struct sk_buff *skb, struct netlink_callback *cb)
2027 {
2028         struct cfg802154_registered_device *rdev = NULL;
2029         struct ieee802154_llsec_key_entry *key;
2030         struct ieee802154_llsec_table *table;
2031         struct wpan_dev *wpan_dev;
2032         int err;
2033
2034         err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev);
2035         if (err)
2036                 return err;
2037
2038         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) {
2039                 err = skb->len;
2040                 goto out_err;
2041         }
2042
2043         if (!wpan_dev->netdev) {
2044                 err = -EINVAL;
2045                 goto out_err;
2046         }
2047
2048         rdev_lock_llsec_table(rdev, wpan_dev);
2049         rdev_get_llsec_table(rdev, wpan_dev, &table);
2050
2051         /* TODO make it like station dump */
2052         if (cb->args[2])
2053                 goto out;
2054
2055         list_for_each_entry(key, &table->keys, list) {
2056                 if (nl802154_send_key(skb, NL802154_CMD_NEW_SEC_KEY,
2057                                       NETLINK_CB(cb->skb).portid,
2058                                       cb->nlh->nlmsg_seq, NLM_F_MULTI,
2059                                       rdev, wpan_dev->netdev, key) < 0) {
2060                         /* TODO */
2061                         err = -EIO;
2062                         rdev_unlock_llsec_table(rdev, wpan_dev);
2063                         goto out_err;
2064                 }
2065         }
2066
2067         cb->args[2] = 1;
2068
2069 out:
2070         rdev_unlock_llsec_table(rdev, wpan_dev);
2071         err = skb->len;
2072 out_err:
2073         nl802154_finish_wpan_dev_dump(rdev);
2074
2075         return err;
2076 }
2077
2078 static const struct nla_policy nl802154_key_policy[NL802154_KEY_ATTR_MAX + 1] = {
2079         [NL802154_KEY_ATTR_ID] = { NLA_NESTED },
2080         /* TODO handle it as for_each_nested and NLA_FLAG? */
2081         [NL802154_KEY_ATTR_USAGE_FRAMES] = { NLA_U8 },
2082         /* TODO handle it as for_each_nested, not static array? */
2083         [NL802154_KEY_ATTR_USAGE_CMDS] = { .len = NL802154_CMD_FRAME_NR_IDS / 8 },
2084         [NL802154_KEY_ATTR_BYTES] = { .len = NL802154_KEY_SIZE },
2085 };
2086
2087 static int nl802154_add_llsec_key(struct sk_buff *skb, struct genl_info *info)
2088 {
2089         struct cfg802154_registered_device *rdev = info->user_ptr[0];
2090         struct net_device *dev = info->user_ptr[1];
2091         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
2092         struct nlattr *attrs[NL802154_KEY_ATTR_MAX + 1];
2093         struct ieee802154_llsec_key key = { };
2094         struct ieee802154_llsec_key_id id = { };
2095         u32 commands[NL802154_CMD_FRAME_NR_IDS / 32] = { };
2096
2097         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
2098                 return -EOPNOTSUPP;
2099
2100         if (!info->attrs[NL802154_ATTR_SEC_KEY] ||
2101             nla_parse_nested_deprecated(attrs, NL802154_KEY_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_KEY], nl802154_key_policy, info->extack))
2102                 return -EINVAL;
2103
2104         if (!attrs[NL802154_KEY_ATTR_USAGE_FRAMES] ||
2105             !attrs[NL802154_KEY_ATTR_BYTES])
2106                 return -EINVAL;
2107
2108         if (ieee802154_llsec_parse_key_id(attrs[NL802154_KEY_ATTR_ID], &id) < 0)
2109                 return -ENOBUFS;
2110
2111         key.frame_types = nla_get_u8(attrs[NL802154_KEY_ATTR_USAGE_FRAMES]);
2112         if (key.frame_types > BIT(NL802154_FRAME_MAX) ||
2113             ((key.frame_types & BIT(NL802154_FRAME_CMD)) &&
2114              !attrs[NL802154_KEY_ATTR_USAGE_CMDS]))
2115                 return -EINVAL;
2116
2117         if (attrs[NL802154_KEY_ATTR_USAGE_CMDS]) {
2118                 /* TODO for each nested */
2119                 nla_memcpy(commands, attrs[NL802154_KEY_ATTR_USAGE_CMDS],
2120                            NL802154_CMD_FRAME_NR_IDS / 8);
2121
2122                 /* TODO understand the -EINVAL logic here? last condition */
2123                 if (commands[0] || commands[1] || commands[2] || commands[3] ||
2124                     commands[4] || commands[5] || commands[6] ||
2125                     commands[7] > BIT(NL802154_CMD_FRAME_MAX))
2126                         return -EINVAL;
2127
2128                 key.cmd_frame_ids = commands[7];
2129         } else {
2130                 key.cmd_frame_ids = 0;
2131         }
2132
2133         nla_memcpy(key.key, attrs[NL802154_KEY_ATTR_BYTES], NL802154_KEY_SIZE);
2134
2135         if (ieee802154_llsec_parse_key_id(attrs[NL802154_KEY_ATTR_ID], &id) < 0)
2136                 return -ENOBUFS;
2137
2138         return rdev_add_llsec_key(rdev, wpan_dev, &id, &key);
2139 }
2140
2141 static int nl802154_del_llsec_key(struct sk_buff *skb, struct genl_info *info)
2142 {
2143         struct cfg802154_registered_device *rdev = info->user_ptr[0];
2144         struct net_device *dev = info->user_ptr[1];
2145         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
2146         struct nlattr *attrs[NL802154_KEY_ATTR_MAX + 1];
2147         struct ieee802154_llsec_key_id id;
2148
2149         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
2150                 return -EOPNOTSUPP;
2151
2152         if (!info->attrs[NL802154_ATTR_SEC_KEY] ||
2153             nla_parse_nested_deprecated(attrs, NL802154_KEY_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_KEY], nl802154_key_policy, info->extack))
2154                 return -EINVAL;
2155
2156         if (ieee802154_llsec_parse_key_id(attrs[NL802154_KEY_ATTR_ID], &id) < 0)
2157                 return -ENOBUFS;
2158
2159         return rdev_del_llsec_key(rdev, wpan_dev, &id);
2160 }
2161
2162 static int nl802154_send_device(struct sk_buff *msg, u32 cmd, u32 portid,
2163                                 u32 seq, int flags,
2164                                 struct cfg802154_registered_device *rdev,
2165                                 struct net_device *dev,
2166                                 const struct ieee802154_llsec_device *dev_desc)
2167 {
2168         void *hdr;
2169         struct nlattr *nl_device;
2170
2171         hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
2172         if (!hdr)
2173                 return -ENOBUFS;
2174
2175         if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex))
2176                 goto nla_put_failure;
2177
2178         nl_device = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_DEVICE);
2179         if (!nl_device)
2180                 goto nla_put_failure;
2181
2182         if (nla_put_u32(msg, NL802154_DEV_ATTR_FRAME_COUNTER,
2183                         dev_desc->frame_counter) ||
2184             nla_put_le16(msg, NL802154_DEV_ATTR_PAN_ID, dev_desc->pan_id) ||
2185             nla_put_le16(msg, NL802154_DEV_ATTR_SHORT_ADDR,
2186                          dev_desc->short_addr) ||
2187             nla_put_le64(msg, NL802154_DEV_ATTR_EXTENDED_ADDR,
2188                          dev_desc->hwaddr, NL802154_DEV_ATTR_PAD) ||
2189             nla_put_u8(msg, NL802154_DEV_ATTR_SECLEVEL_EXEMPT,
2190                        dev_desc->seclevel_exempt) ||
2191             nla_put_u32(msg, NL802154_DEV_ATTR_KEY_MODE, dev_desc->key_mode))
2192                 goto nla_put_failure;
2193
2194         nla_nest_end(msg, nl_device);
2195         genlmsg_end(msg, hdr);
2196
2197         return 0;
2198
2199 nla_put_failure:
2200         genlmsg_cancel(msg, hdr);
2201         return -EMSGSIZE;
2202 }
2203
2204 static int
2205 nl802154_dump_llsec_dev(struct sk_buff *skb, struct netlink_callback *cb)
2206 {
2207         struct cfg802154_registered_device *rdev = NULL;
2208         struct ieee802154_llsec_device *dev;
2209         struct ieee802154_llsec_table *table;
2210         struct wpan_dev *wpan_dev;
2211         int err;
2212
2213         err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev);
2214         if (err)
2215                 return err;
2216
2217         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) {
2218                 err = skb->len;
2219                 goto out_err;
2220         }
2221
2222         if (!wpan_dev->netdev) {
2223                 err = -EINVAL;
2224                 goto out_err;
2225         }
2226
2227         rdev_lock_llsec_table(rdev, wpan_dev);
2228         rdev_get_llsec_table(rdev, wpan_dev, &table);
2229
2230         /* TODO make it like station dump */
2231         if (cb->args[2])
2232                 goto out;
2233
2234         list_for_each_entry(dev, &table->devices, list) {
2235                 if (nl802154_send_device(skb, NL802154_CMD_NEW_SEC_LEVEL,
2236                                          NETLINK_CB(cb->skb).portid,
2237                                          cb->nlh->nlmsg_seq, NLM_F_MULTI,
2238                                          rdev, wpan_dev->netdev, dev) < 0) {
2239                         /* TODO */
2240                         err = -EIO;
2241                         rdev_unlock_llsec_table(rdev, wpan_dev);
2242                         goto out_err;
2243                 }
2244         }
2245
2246         cb->args[2] = 1;
2247
2248 out:
2249         rdev_unlock_llsec_table(rdev, wpan_dev);
2250         err = skb->len;
2251 out_err:
2252         nl802154_finish_wpan_dev_dump(rdev);
2253
2254         return err;
2255 }
2256
2257 static const struct nla_policy nl802154_dev_policy[NL802154_DEV_ATTR_MAX + 1] = {
2258         [NL802154_DEV_ATTR_FRAME_COUNTER] = { NLA_U32 },
2259         [NL802154_DEV_ATTR_PAN_ID] = { .type = NLA_U16 },
2260         [NL802154_DEV_ATTR_SHORT_ADDR] = { .type = NLA_U16 },
2261         [NL802154_DEV_ATTR_EXTENDED_ADDR] = { .type = NLA_U64 },
2262         [NL802154_DEV_ATTR_SECLEVEL_EXEMPT] = { NLA_U8 },
2263         [NL802154_DEV_ATTR_KEY_MODE] = { NLA_U32 },
2264 };
2265
2266 static int
2267 ieee802154_llsec_parse_device(struct nlattr *nla,
2268                               struct ieee802154_llsec_device *dev)
2269 {
2270         struct nlattr *attrs[NL802154_DEV_ATTR_MAX + 1];
2271
2272         if (!nla || nla_parse_nested_deprecated(attrs, NL802154_DEV_ATTR_MAX, nla, nl802154_dev_policy, NULL))
2273                 return -EINVAL;
2274
2275         memset(dev, 0, sizeof(*dev));
2276
2277         if (!attrs[NL802154_DEV_ATTR_FRAME_COUNTER] ||
2278             !attrs[NL802154_DEV_ATTR_PAN_ID] ||
2279             !attrs[NL802154_DEV_ATTR_SHORT_ADDR] ||
2280             !attrs[NL802154_DEV_ATTR_EXTENDED_ADDR] ||
2281             !attrs[NL802154_DEV_ATTR_SECLEVEL_EXEMPT] ||
2282             !attrs[NL802154_DEV_ATTR_KEY_MODE])
2283                 return -EINVAL;
2284
2285         /* TODO be32 */
2286         dev->frame_counter = nla_get_u32(attrs[NL802154_DEV_ATTR_FRAME_COUNTER]);
2287         dev->pan_id = nla_get_le16(attrs[NL802154_DEV_ATTR_PAN_ID]);
2288         dev->short_addr = nla_get_le16(attrs[NL802154_DEV_ATTR_SHORT_ADDR]);
2289         /* TODO rename hwaddr to extended_addr */
2290         dev->hwaddr = nla_get_le64(attrs[NL802154_DEV_ATTR_EXTENDED_ADDR]);
2291         dev->seclevel_exempt = nla_get_u8(attrs[NL802154_DEV_ATTR_SECLEVEL_EXEMPT]);
2292         dev->key_mode = nla_get_u32(attrs[NL802154_DEV_ATTR_KEY_MODE]);
2293
2294         if (dev->key_mode > NL802154_DEVKEY_MAX ||
2295             (dev->seclevel_exempt != 0 && dev->seclevel_exempt != 1))
2296                 return -EINVAL;
2297
2298         return 0;
2299 }
2300
2301 static int nl802154_add_llsec_dev(struct sk_buff *skb, struct genl_info *info)
2302 {
2303         struct cfg802154_registered_device *rdev = info->user_ptr[0];
2304         struct net_device *dev = info->user_ptr[1];
2305         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
2306         struct ieee802154_llsec_device dev_desc;
2307
2308         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
2309                 return -EOPNOTSUPP;
2310
2311         if (ieee802154_llsec_parse_device(info->attrs[NL802154_ATTR_SEC_DEVICE],
2312                                           &dev_desc) < 0)
2313                 return -EINVAL;
2314
2315         return rdev_add_device(rdev, wpan_dev, &dev_desc);
2316 }
2317
2318 static int nl802154_del_llsec_dev(struct sk_buff *skb, struct genl_info *info)
2319 {
2320         struct cfg802154_registered_device *rdev = info->user_ptr[0];
2321         struct net_device *dev = info->user_ptr[1];
2322         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
2323         struct nlattr *attrs[NL802154_DEV_ATTR_MAX + 1];
2324         __le64 extended_addr;
2325
2326         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
2327                 return -EOPNOTSUPP;
2328
2329         if (!info->attrs[NL802154_ATTR_SEC_DEVICE] ||
2330             nla_parse_nested_deprecated(attrs, NL802154_DEV_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_DEVICE], nl802154_dev_policy, info->extack))
2331                 return -EINVAL;
2332
2333         if (!attrs[NL802154_DEV_ATTR_EXTENDED_ADDR])
2334                 return -EINVAL;
2335
2336         extended_addr = nla_get_le64(attrs[NL802154_DEV_ATTR_EXTENDED_ADDR]);
2337         return rdev_del_device(rdev, wpan_dev, extended_addr);
2338 }
2339
2340 static int nl802154_send_devkey(struct sk_buff *msg, u32 cmd, u32 portid,
2341                                 u32 seq, int flags,
2342                                 struct cfg802154_registered_device *rdev,
2343                                 struct net_device *dev, __le64 extended_addr,
2344                                 const struct ieee802154_llsec_device_key *devkey)
2345 {
2346         void *hdr;
2347         struct nlattr *nl_devkey, *nl_key_id;
2348
2349         hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
2350         if (!hdr)
2351                 return -ENOBUFS;
2352
2353         if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex))
2354                 goto nla_put_failure;
2355
2356         nl_devkey = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_DEVKEY);
2357         if (!nl_devkey)
2358                 goto nla_put_failure;
2359
2360         if (nla_put_le64(msg, NL802154_DEVKEY_ATTR_EXTENDED_ADDR,
2361                          extended_addr, NL802154_DEVKEY_ATTR_PAD) ||
2362             nla_put_u32(msg, NL802154_DEVKEY_ATTR_FRAME_COUNTER,
2363                         devkey->frame_counter))
2364                 goto nla_put_failure;
2365
2366         nl_key_id = nla_nest_start_noflag(msg, NL802154_DEVKEY_ATTR_ID);
2367         if (!nl_key_id)
2368                 goto nla_put_failure;
2369
2370         if (ieee802154_llsec_send_key_id(msg, &devkey->key_id) < 0)
2371                 goto nla_put_failure;
2372
2373         nla_nest_end(msg, nl_key_id);
2374         nla_nest_end(msg, nl_devkey);
2375         genlmsg_end(msg, hdr);
2376
2377         return 0;
2378
2379 nla_put_failure:
2380         genlmsg_cancel(msg, hdr);
2381         return -EMSGSIZE;
2382 }
2383
2384 static int
2385 nl802154_dump_llsec_devkey(struct sk_buff *skb, struct netlink_callback *cb)
2386 {
2387         struct cfg802154_registered_device *rdev = NULL;
2388         struct ieee802154_llsec_device_key *kpos;
2389         struct ieee802154_llsec_device *dpos;
2390         struct ieee802154_llsec_table *table;
2391         struct wpan_dev *wpan_dev;
2392         int err;
2393
2394         err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev);
2395         if (err)
2396                 return err;
2397
2398         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) {
2399                 err = skb->len;
2400                 goto out_err;
2401         }
2402
2403         if (!wpan_dev->netdev) {
2404                 err = -EINVAL;
2405                 goto out_err;
2406         }
2407
2408         rdev_lock_llsec_table(rdev, wpan_dev);
2409         rdev_get_llsec_table(rdev, wpan_dev, &table);
2410
2411         /* TODO make it like station dump */
2412         if (cb->args[2])
2413                 goto out;
2414
2415         /* TODO look if remove devkey and do some nested attribute */
2416         list_for_each_entry(dpos, &table->devices, list) {
2417                 list_for_each_entry(kpos, &dpos->keys, list) {
2418                         if (nl802154_send_devkey(skb,
2419                                                  NL802154_CMD_NEW_SEC_LEVEL,
2420                                                  NETLINK_CB(cb->skb).portid,
2421                                                  cb->nlh->nlmsg_seq,
2422                                                  NLM_F_MULTI, rdev,
2423                                                  wpan_dev->netdev,
2424                                                  dpos->hwaddr,
2425                                                  kpos) < 0) {
2426                                 /* TODO */
2427                                 err = -EIO;
2428                                 rdev_unlock_llsec_table(rdev, wpan_dev);
2429                                 goto out_err;
2430                         }
2431                 }
2432         }
2433
2434         cb->args[2] = 1;
2435
2436 out:
2437         rdev_unlock_llsec_table(rdev, wpan_dev);
2438         err = skb->len;
2439 out_err:
2440         nl802154_finish_wpan_dev_dump(rdev);
2441
2442         return err;
2443 }
2444
2445 static const struct nla_policy nl802154_devkey_policy[NL802154_DEVKEY_ATTR_MAX + 1] = {
2446         [NL802154_DEVKEY_ATTR_FRAME_COUNTER] = { NLA_U32 },
2447         [NL802154_DEVKEY_ATTR_EXTENDED_ADDR] = { NLA_U64 },
2448         [NL802154_DEVKEY_ATTR_ID] = { NLA_NESTED },
2449 };
2450
2451 static int nl802154_add_llsec_devkey(struct sk_buff *skb, struct genl_info *info)
2452 {
2453         struct cfg802154_registered_device *rdev = info->user_ptr[0];
2454         struct net_device *dev = info->user_ptr[1];
2455         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
2456         struct nlattr *attrs[NL802154_DEVKEY_ATTR_MAX + 1];
2457         struct ieee802154_llsec_device_key key;
2458         __le64 extended_addr;
2459
2460         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
2461                 return -EOPNOTSUPP;
2462
2463         if (!info->attrs[NL802154_ATTR_SEC_DEVKEY] ||
2464             nla_parse_nested_deprecated(attrs, NL802154_DEVKEY_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_DEVKEY], nl802154_devkey_policy, info->extack) < 0)
2465                 return -EINVAL;
2466
2467         if (!attrs[NL802154_DEVKEY_ATTR_FRAME_COUNTER] ||
2468             !attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR])
2469                 return -EINVAL;
2470
2471         /* TODO change key.id ? */
2472         if (ieee802154_llsec_parse_key_id(attrs[NL802154_DEVKEY_ATTR_ID],
2473                                           &key.key_id) < 0)
2474                 return -ENOBUFS;
2475
2476         /* TODO be32 */
2477         key.frame_counter = nla_get_u32(attrs[NL802154_DEVKEY_ATTR_FRAME_COUNTER]);
2478         /* TODO change naming hwaddr -> extended_addr
2479          * check unique identifier short+pan OR extended_addr
2480          */
2481         extended_addr = nla_get_le64(attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR]);
2482         return rdev_add_devkey(rdev, wpan_dev, extended_addr, &key);
2483 }
2484
2485 static int nl802154_del_llsec_devkey(struct sk_buff *skb, struct genl_info *info)
2486 {
2487         struct cfg802154_registered_device *rdev = info->user_ptr[0];
2488         struct net_device *dev = info->user_ptr[1];
2489         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
2490         struct nlattr *attrs[NL802154_DEVKEY_ATTR_MAX + 1];
2491         struct ieee802154_llsec_device_key key;
2492         __le64 extended_addr;
2493
2494         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
2495                 return -EOPNOTSUPP;
2496
2497         if (!info->attrs[NL802154_ATTR_SEC_DEVKEY] ||
2498             nla_parse_nested_deprecated(attrs, NL802154_DEVKEY_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_DEVKEY], nl802154_devkey_policy, info->extack))
2499                 return -EINVAL;
2500
2501         if (!attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR])
2502                 return -EINVAL;
2503
2504         /* TODO change key.id ? */
2505         if (ieee802154_llsec_parse_key_id(attrs[NL802154_DEVKEY_ATTR_ID],
2506                                           &key.key_id) < 0)
2507                 return -ENOBUFS;
2508
2509         /* TODO change naming hwaddr -> extended_addr
2510          * check unique identifier short+pan OR extended_addr
2511          */
2512         extended_addr = nla_get_le64(attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR]);
2513         return rdev_del_devkey(rdev, wpan_dev, extended_addr, &key);
2514 }
2515
2516 static int nl802154_send_seclevel(struct sk_buff *msg, u32 cmd, u32 portid,
2517                                   u32 seq, int flags,
2518                                   struct cfg802154_registered_device *rdev,
2519                                   struct net_device *dev,
2520                                   const struct ieee802154_llsec_seclevel *sl)
2521 {
2522         void *hdr;
2523         struct nlattr *nl_seclevel;
2524
2525         hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
2526         if (!hdr)
2527                 return -ENOBUFS;
2528
2529         if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex))
2530                 goto nla_put_failure;
2531
2532         nl_seclevel = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_LEVEL);
2533         if (!nl_seclevel)
2534                 goto nla_put_failure;
2535
2536         if (nla_put_u32(msg, NL802154_SECLEVEL_ATTR_FRAME, sl->frame_type) ||
2537             nla_put_u32(msg, NL802154_SECLEVEL_ATTR_LEVELS, sl->sec_levels) ||
2538             nla_put_u8(msg, NL802154_SECLEVEL_ATTR_DEV_OVERRIDE,
2539                        sl->device_override))
2540                 goto nla_put_failure;
2541
2542         if (sl->frame_type == NL802154_FRAME_CMD) {
2543                 if (nla_put_u32(msg, NL802154_SECLEVEL_ATTR_CMD_FRAME,
2544                                 sl->cmd_frame_id))
2545                         goto nla_put_failure;
2546         }
2547
2548         nla_nest_end(msg, nl_seclevel);
2549         genlmsg_end(msg, hdr);
2550
2551         return 0;
2552
2553 nla_put_failure:
2554         genlmsg_cancel(msg, hdr);
2555         return -EMSGSIZE;
2556 }
2557
2558 static int
2559 nl802154_dump_llsec_seclevel(struct sk_buff *skb, struct netlink_callback *cb)
2560 {
2561         struct cfg802154_registered_device *rdev = NULL;
2562         struct ieee802154_llsec_seclevel *sl;
2563         struct ieee802154_llsec_table *table;
2564         struct wpan_dev *wpan_dev;
2565         int err;
2566
2567         err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev);
2568         if (err)
2569                 return err;
2570
2571         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) {
2572                 err = skb->len;
2573                 goto out_err;
2574         }
2575
2576         if (!wpan_dev->netdev) {
2577                 err = -EINVAL;
2578                 goto out_err;
2579         }
2580
2581         rdev_lock_llsec_table(rdev, wpan_dev);
2582         rdev_get_llsec_table(rdev, wpan_dev, &table);
2583
2584         /* TODO make it like station dump */
2585         if (cb->args[2])
2586                 goto out;
2587
2588         list_for_each_entry(sl, &table->security_levels, list) {
2589                 if (nl802154_send_seclevel(skb, NL802154_CMD_NEW_SEC_LEVEL,
2590                                            NETLINK_CB(cb->skb).portid,
2591                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
2592                                            rdev, wpan_dev->netdev, sl) < 0) {
2593                         /* TODO */
2594                         err = -EIO;
2595                         rdev_unlock_llsec_table(rdev, wpan_dev);
2596                         goto out_err;
2597                 }
2598         }
2599
2600         cb->args[2] = 1;
2601
2602 out:
2603         rdev_unlock_llsec_table(rdev, wpan_dev);
2604         err = skb->len;
2605 out_err:
2606         nl802154_finish_wpan_dev_dump(rdev);
2607
2608         return err;
2609 }
2610
2611 static const struct nla_policy nl802154_seclevel_policy[NL802154_SECLEVEL_ATTR_MAX + 1] = {
2612         [NL802154_SECLEVEL_ATTR_LEVELS] = { .type = NLA_U8 },
2613         [NL802154_SECLEVEL_ATTR_FRAME] = { .type = NLA_U32 },
2614         [NL802154_SECLEVEL_ATTR_CMD_FRAME] = { .type = NLA_U32 },
2615         [NL802154_SECLEVEL_ATTR_DEV_OVERRIDE] = { .type = NLA_U8 },
2616 };
2617
2618 static int
2619 llsec_parse_seclevel(struct nlattr *nla, struct ieee802154_llsec_seclevel *sl)
2620 {
2621         struct nlattr *attrs[NL802154_SECLEVEL_ATTR_MAX + 1];
2622
2623         if (!nla || nla_parse_nested_deprecated(attrs, NL802154_SECLEVEL_ATTR_MAX, nla, nl802154_seclevel_policy, NULL))
2624                 return -EINVAL;
2625
2626         memset(sl, 0, sizeof(*sl));
2627
2628         if (!attrs[NL802154_SECLEVEL_ATTR_LEVELS] ||
2629             !attrs[NL802154_SECLEVEL_ATTR_FRAME] ||
2630             !attrs[NL802154_SECLEVEL_ATTR_DEV_OVERRIDE])
2631                 return -EINVAL;
2632
2633         sl->sec_levels = nla_get_u8(attrs[NL802154_SECLEVEL_ATTR_LEVELS]);
2634         sl->frame_type = nla_get_u32(attrs[NL802154_SECLEVEL_ATTR_FRAME]);
2635         sl->device_override = nla_get_u8(attrs[NL802154_SECLEVEL_ATTR_DEV_OVERRIDE]);
2636         if (sl->frame_type > NL802154_FRAME_MAX ||
2637             (sl->device_override != 0 && sl->device_override != 1))
2638                 return -EINVAL;
2639
2640         if (sl->frame_type == NL802154_FRAME_CMD) {
2641                 if (!attrs[NL802154_SECLEVEL_ATTR_CMD_FRAME])
2642                         return -EINVAL;
2643
2644                 sl->cmd_frame_id = nla_get_u32(attrs[NL802154_SECLEVEL_ATTR_CMD_FRAME]);
2645                 if (sl->cmd_frame_id > NL802154_CMD_FRAME_MAX)
2646                         return -EINVAL;
2647         }
2648
2649         return 0;
2650 }
2651
2652 static int nl802154_add_llsec_seclevel(struct sk_buff *skb,
2653                                        struct genl_info *info)
2654 {
2655         struct cfg802154_registered_device *rdev = info->user_ptr[0];
2656         struct net_device *dev = info->user_ptr[1];
2657         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
2658         struct ieee802154_llsec_seclevel sl;
2659
2660         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
2661                 return -EOPNOTSUPP;
2662
2663         if (llsec_parse_seclevel(info->attrs[NL802154_ATTR_SEC_LEVEL],
2664                                  &sl) < 0)
2665                 return -EINVAL;
2666
2667         return rdev_add_seclevel(rdev, wpan_dev, &sl);
2668 }
2669
2670 static int nl802154_del_llsec_seclevel(struct sk_buff *skb,
2671                                        struct genl_info *info)
2672 {
2673         struct cfg802154_registered_device *rdev = info->user_ptr[0];
2674         struct net_device *dev = info->user_ptr[1];
2675         struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
2676         struct ieee802154_llsec_seclevel sl;
2677
2678         if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
2679                 return -EOPNOTSUPP;
2680
2681         if (llsec_parse_seclevel(info->attrs[NL802154_ATTR_SEC_LEVEL],
2682                                  &sl) < 0)
2683                 return -EINVAL;
2684
2685         return rdev_del_seclevel(rdev, wpan_dev, &sl);
2686 }
2687 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
2688
2689 #define NL802154_FLAG_NEED_WPAN_PHY     0x01
2690 #define NL802154_FLAG_NEED_NETDEV       0x02
2691 #define NL802154_FLAG_NEED_RTNL         0x04
2692 #define NL802154_FLAG_CHECK_NETDEV_UP   0x08
2693 #define NL802154_FLAG_NEED_WPAN_DEV     0x10
2694
2695 static int nl802154_pre_doit(const struct genl_split_ops *ops,
2696                              struct sk_buff *skb,
2697                              struct genl_info *info)
2698 {
2699         struct cfg802154_registered_device *rdev;
2700         struct wpan_dev *wpan_dev;
2701         struct net_device *dev;
2702         bool rtnl = ops->internal_flags & NL802154_FLAG_NEED_RTNL;
2703
2704         if (rtnl)
2705                 rtnl_lock();
2706
2707         if (ops->internal_flags & NL802154_FLAG_NEED_WPAN_PHY) {
2708                 rdev = cfg802154_get_dev_from_info(genl_info_net(info), info);
2709                 if (IS_ERR(rdev)) {
2710                         if (rtnl)
2711                                 rtnl_unlock();
2712                         return PTR_ERR(rdev);
2713                 }
2714                 info->user_ptr[0] = rdev;
2715         } else if (ops->internal_flags & NL802154_FLAG_NEED_NETDEV ||
2716                    ops->internal_flags & NL802154_FLAG_NEED_WPAN_DEV) {
2717                 ASSERT_RTNL();
2718                 wpan_dev = __cfg802154_wpan_dev_from_attrs(genl_info_net(info),
2719                                                            info->attrs);
2720                 if (IS_ERR(wpan_dev)) {
2721                         if (rtnl)
2722                                 rtnl_unlock();
2723                         return PTR_ERR(wpan_dev);
2724                 }
2725
2726                 dev = wpan_dev->netdev;
2727                 rdev = wpan_phy_to_rdev(wpan_dev->wpan_phy);
2728
2729                 if (ops->internal_flags & NL802154_FLAG_NEED_NETDEV) {
2730                         if (!dev) {
2731                                 if (rtnl)
2732                                         rtnl_unlock();
2733                                 return -EINVAL;
2734                         }
2735
2736                         info->user_ptr[1] = dev;
2737                 } else {
2738                         info->user_ptr[1] = wpan_dev;
2739                 }
2740
2741                 if (dev) {
2742                         if (ops->internal_flags & NL802154_FLAG_CHECK_NETDEV_UP &&
2743                             !netif_running(dev)) {
2744                                 if (rtnl)
2745                                         rtnl_unlock();
2746                                 return -ENETDOWN;
2747                         }
2748
2749                         dev_hold(dev);
2750                 }
2751
2752                 info->user_ptr[0] = rdev;
2753         }
2754
2755         return 0;
2756 }
2757
2758 static void nl802154_post_doit(const struct genl_split_ops *ops,
2759                                struct sk_buff *skb,
2760                                struct genl_info *info)
2761 {
2762         if (info->user_ptr[1]) {
2763                 if (ops->internal_flags & NL802154_FLAG_NEED_WPAN_DEV) {
2764                         struct wpan_dev *wpan_dev = info->user_ptr[1];
2765
2766                         dev_put(wpan_dev->netdev);
2767                 } else {
2768                         dev_put(info->user_ptr[1]);
2769                 }
2770         }
2771
2772         if (ops->internal_flags & NL802154_FLAG_NEED_RTNL)
2773                 rtnl_unlock();
2774 }
2775
2776 static const struct genl_ops nl802154_ops[] = {
2777         {
2778                 .cmd = NL802154_CMD_GET_WPAN_PHY,
2779                 .validate = GENL_DONT_VALIDATE_STRICT |
2780                             GENL_DONT_VALIDATE_DUMP_STRICT,
2781                 .doit = nl802154_get_wpan_phy,
2782                 .dumpit = nl802154_dump_wpan_phy,
2783                 .done = nl802154_dump_wpan_phy_done,
2784                 /* can be retrieved by unprivileged users */
2785                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2786                                   NL802154_FLAG_NEED_RTNL,
2787         },
2788         {
2789                 .cmd = NL802154_CMD_GET_INTERFACE,
2790                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2791                 .doit = nl802154_get_interface,
2792                 .dumpit = nl802154_dump_interface,
2793                 /* can be retrieved by unprivileged users */
2794                 .internal_flags = NL802154_FLAG_NEED_WPAN_DEV |
2795                                   NL802154_FLAG_NEED_RTNL,
2796         },
2797         {
2798                 .cmd = NL802154_CMD_NEW_INTERFACE,
2799                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2800                 .doit = nl802154_new_interface,
2801                 .flags = GENL_ADMIN_PERM,
2802                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2803                                   NL802154_FLAG_NEED_RTNL,
2804         },
2805         {
2806                 .cmd = NL802154_CMD_DEL_INTERFACE,
2807                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2808                 .doit = nl802154_del_interface,
2809                 .flags = GENL_ADMIN_PERM,
2810                 .internal_flags = NL802154_FLAG_NEED_WPAN_DEV |
2811                                   NL802154_FLAG_NEED_RTNL,
2812         },
2813         {
2814                 .cmd = NL802154_CMD_SET_CHANNEL,
2815                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2816                 .doit = nl802154_set_channel,
2817                 .flags = GENL_ADMIN_PERM,
2818                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2819                                   NL802154_FLAG_NEED_RTNL,
2820         },
2821         {
2822                 .cmd = NL802154_CMD_SET_CCA_MODE,
2823                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2824                 .doit = nl802154_set_cca_mode,
2825                 .flags = GENL_ADMIN_PERM,
2826                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2827                                   NL802154_FLAG_NEED_RTNL,
2828         },
2829         {
2830                 .cmd = NL802154_CMD_SET_CCA_ED_LEVEL,
2831                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2832                 .doit = nl802154_set_cca_ed_level,
2833                 .flags = GENL_ADMIN_PERM,
2834                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2835                                   NL802154_FLAG_NEED_RTNL,
2836         },
2837         {
2838                 .cmd = NL802154_CMD_SET_TX_POWER,
2839                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2840                 .doit = nl802154_set_tx_power,
2841                 .flags = GENL_ADMIN_PERM,
2842                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2843                                   NL802154_FLAG_NEED_RTNL,
2844         },
2845         {
2846                 .cmd = NL802154_CMD_SET_WPAN_PHY_NETNS,
2847                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2848                 .doit = nl802154_wpan_phy_netns,
2849                 .flags = GENL_ADMIN_PERM,
2850                 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2851                                   NL802154_FLAG_NEED_RTNL,
2852         },
2853         {
2854                 .cmd = NL802154_CMD_SET_PAN_ID,
2855                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2856                 .doit = nl802154_set_pan_id,
2857                 .flags = GENL_ADMIN_PERM,
2858                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2859                                   NL802154_FLAG_NEED_RTNL,
2860         },
2861         {
2862                 .cmd = NL802154_CMD_SET_SHORT_ADDR,
2863                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2864                 .doit = nl802154_set_short_addr,
2865                 .flags = GENL_ADMIN_PERM,
2866                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2867                                   NL802154_FLAG_NEED_RTNL,
2868         },
2869         {
2870                 .cmd = NL802154_CMD_SET_BACKOFF_EXPONENT,
2871                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2872                 .doit = nl802154_set_backoff_exponent,
2873                 .flags = GENL_ADMIN_PERM,
2874                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2875                                   NL802154_FLAG_NEED_RTNL,
2876         },
2877         {
2878                 .cmd = NL802154_CMD_SET_MAX_CSMA_BACKOFFS,
2879                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2880                 .doit = nl802154_set_max_csma_backoffs,
2881                 .flags = GENL_ADMIN_PERM,
2882                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2883                                   NL802154_FLAG_NEED_RTNL,
2884         },
2885         {
2886                 .cmd = NL802154_CMD_SET_MAX_FRAME_RETRIES,
2887                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2888                 .doit = nl802154_set_max_frame_retries,
2889                 .flags = GENL_ADMIN_PERM,
2890                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2891                                   NL802154_FLAG_NEED_RTNL,
2892         },
2893         {
2894                 .cmd = NL802154_CMD_SET_LBT_MODE,
2895                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2896                 .doit = nl802154_set_lbt_mode,
2897                 .flags = GENL_ADMIN_PERM,
2898                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2899                                   NL802154_FLAG_NEED_RTNL,
2900         },
2901         {
2902                 .cmd = NL802154_CMD_SET_ACKREQ_DEFAULT,
2903                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2904                 .doit = nl802154_set_ackreq_default,
2905                 .flags = GENL_ADMIN_PERM,
2906                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2907                                   NL802154_FLAG_NEED_RTNL,
2908         },
2909         {
2910                 .cmd = NL802154_CMD_TRIGGER_SCAN,
2911                 .doit = nl802154_trigger_scan,
2912                 .flags = GENL_ADMIN_PERM,
2913                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2914                                   NL802154_FLAG_CHECK_NETDEV_UP |
2915                                   NL802154_FLAG_NEED_RTNL,
2916         },
2917         {
2918                 .cmd = NL802154_CMD_ABORT_SCAN,
2919                 .doit = nl802154_abort_scan,
2920                 .flags = GENL_ADMIN_PERM,
2921                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2922                                   NL802154_FLAG_CHECK_NETDEV_UP |
2923                                   NL802154_FLAG_NEED_RTNL,
2924         },
2925         {
2926                 .cmd = NL802154_CMD_SEND_BEACONS,
2927                 .doit = nl802154_send_beacons,
2928                 .flags = GENL_ADMIN_PERM,
2929                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2930                                   NL802154_FLAG_CHECK_NETDEV_UP |
2931                                   NL802154_FLAG_NEED_RTNL,
2932         },
2933         {
2934                 .cmd = NL802154_CMD_STOP_BEACONS,
2935                 .doit = nl802154_stop_beacons,
2936                 .flags = GENL_ADMIN_PERM,
2937                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2938                                   NL802154_FLAG_CHECK_NETDEV_UP |
2939                                   NL802154_FLAG_NEED_RTNL,
2940         },
2941         {
2942                 .cmd = NL802154_CMD_ASSOCIATE,
2943                 .doit = nl802154_associate,
2944                 .flags = GENL_ADMIN_PERM,
2945                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2946                                   NL802154_FLAG_CHECK_NETDEV_UP |
2947                                   NL802154_FLAG_NEED_RTNL,
2948         },
2949         {
2950                 .cmd = NL802154_CMD_DISASSOCIATE,
2951                 .doit = nl802154_disassociate,
2952                 .flags = GENL_ADMIN_PERM,
2953                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2954                                   NL802154_FLAG_CHECK_NETDEV_UP |
2955                                   NL802154_FLAG_NEED_RTNL,
2956         },
2957         {
2958                 .cmd = NL802154_CMD_SET_MAX_ASSOCIATIONS,
2959                 .doit = nl802154_set_max_associations,
2960                 .flags = GENL_ADMIN_PERM,
2961                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2962                                   NL802154_FLAG_NEED_RTNL,
2963         },
2964         {
2965                 .cmd = NL802154_CMD_LIST_ASSOCIATIONS,
2966                 .dumpit = nl802154_list_associations,
2967                 /* can be retrieved by unprivileged users */
2968         },
2969 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
2970         {
2971                 .cmd = NL802154_CMD_SET_SEC_PARAMS,
2972                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2973                 .doit = nl802154_set_llsec_params,
2974                 .flags = GENL_ADMIN_PERM,
2975                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2976                                   NL802154_FLAG_NEED_RTNL,
2977         },
2978         {
2979                 .cmd = NL802154_CMD_GET_SEC_KEY,
2980                 .validate = GENL_DONT_VALIDATE_STRICT |
2981                             GENL_DONT_VALIDATE_DUMP_STRICT,
2982                 /* TODO .doit by matching key id? */
2983                 .dumpit = nl802154_dump_llsec_key,
2984                 .flags = GENL_ADMIN_PERM,
2985                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2986                                   NL802154_FLAG_NEED_RTNL,
2987         },
2988         {
2989                 .cmd = NL802154_CMD_NEW_SEC_KEY,
2990                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2991                 .doit = nl802154_add_llsec_key,
2992                 .flags = GENL_ADMIN_PERM,
2993                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2994                                   NL802154_FLAG_NEED_RTNL,
2995         },
2996         {
2997                 .cmd = NL802154_CMD_DEL_SEC_KEY,
2998                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2999                 .doit = nl802154_del_llsec_key,
3000                 .flags = GENL_ADMIN_PERM,
3001                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
3002                                   NL802154_FLAG_NEED_RTNL,
3003         },
3004         /* TODO unique identifier must short+pan OR extended_addr */
3005         {
3006                 .cmd = NL802154_CMD_GET_SEC_DEV,
3007                 .validate = GENL_DONT_VALIDATE_STRICT |
3008                             GENL_DONT_VALIDATE_DUMP_STRICT,
3009                 /* TODO .doit by matching extended_addr? */
3010                 .dumpit = nl802154_dump_llsec_dev,
3011                 .flags = GENL_ADMIN_PERM,
3012                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
3013                                   NL802154_FLAG_NEED_RTNL,
3014         },
3015         {
3016                 .cmd = NL802154_CMD_NEW_SEC_DEV,
3017                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3018                 .doit = nl802154_add_llsec_dev,
3019                 .flags = GENL_ADMIN_PERM,
3020                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
3021                                   NL802154_FLAG_NEED_RTNL,
3022         },
3023         {
3024                 .cmd = NL802154_CMD_DEL_SEC_DEV,
3025                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3026                 .doit = nl802154_del_llsec_dev,
3027                 .flags = GENL_ADMIN_PERM,
3028                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
3029                                   NL802154_FLAG_NEED_RTNL,
3030         },
3031         /* TODO remove complete devkey, put it as nested? */
3032         {
3033                 .cmd = NL802154_CMD_GET_SEC_DEVKEY,
3034                 .validate = GENL_DONT_VALIDATE_STRICT |
3035                             GENL_DONT_VALIDATE_DUMP_STRICT,
3036                 /* TODO doit by matching ??? */
3037                 .dumpit = nl802154_dump_llsec_devkey,
3038                 .flags = GENL_ADMIN_PERM,
3039                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
3040                                   NL802154_FLAG_NEED_RTNL,
3041         },
3042         {
3043                 .cmd = NL802154_CMD_NEW_SEC_DEVKEY,
3044                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3045                 .doit = nl802154_add_llsec_devkey,
3046                 .flags = GENL_ADMIN_PERM,
3047                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
3048                                   NL802154_FLAG_NEED_RTNL,
3049         },
3050         {
3051                 .cmd = NL802154_CMD_DEL_SEC_DEVKEY,
3052                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3053                 .doit = nl802154_del_llsec_devkey,
3054                 .flags = GENL_ADMIN_PERM,
3055                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
3056                                   NL802154_FLAG_NEED_RTNL,
3057         },
3058         {
3059                 .cmd = NL802154_CMD_GET_SEC_LEVEL,
3060                 .validate = GENL_DONT_VALIDATE_STRICT |
3061                             GENL_DONT_VALIDATE_DUMP_STRICT,
3062                 /* TODO .doit by matching frame_type? */
3063                 .dumpit = nl802154_dump_llsec_seclevel,
3064                 .flags = GENL_ADMIN_PERM,
3065                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
3066                                   NL802154_FLAG_NEED_RTNL,
3067         },
3068         {
3069                 .cmd = NL802154_CMD_NEW_SEC_LEVEL,
3070                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3071                 .doit = nl802154_add_llsec_seclevel,
3072                 .flags = GENL_ADMIN_PERM,
3073                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
3074                                   NL802154_FLAG_NEED_RTNL,
3075         },
3076         {
3077                 .cmd = NL802154_CMD_DEL_SEC_LEVEL,
3078                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3079                 /* TODO match frame_type only? */
3080                 .doit = nl802154_del_llsec_seclevel,
3081                 .flags = GENL_ADMIN_PERM,
3082                 .internal_flags = NL802154_FLAG_NEED_NETDEV |
3083                                   NL802154_FLAG_NEED_RTNL,
3084         },
3085 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
3086 };
3087
3088 static struct genl_family nl802154_fam __ro_after_init = {
3089         .name = NL802154_GENL_NAME,     /* have users key off the name instead */
3090         .hdrsize = 0,                   /* no private header */
3091         .version = 1,                   /* no particular meaning now */
3092         .maxattr = NL802154_ATTR_MAX,
3093         .policy = nl802154_policy,
3094         .netnsok = true,
3095         .pre_doit = nl802154_pre_doit,
3096         .post_doit = nl802154_post_doit,
3097         .module = THIS_MODULE,
3098         .ops = nl802154_ops,
3099         .n_ops = ARRAY_SIZE(nl802154_ops),
3100         .resv_start_op = NL802154_CMD_DEL_SEC_LEVEL + 1,
3101         .mcgrps = nl802154_mcgrps,
3102         .n_mcgrps = ARRAY_SIZE(nl802154_mcgrps),
3103 };
3104
3105 /* initialisation/exit functions */
3106 int __init nl802154_init(void)
3107 {
3108         return genl_register_family(&nl802154_fam);
3109 }
3110
3111 void nl802154_exit(void)
3112 {
3113         genl_unregister_family(&nl802154_fam);
3114 }