net/ieee802154/nl-mac.c

   1 /*
   2  * Netlink interface for IEEE 802.15.4 stack
   3  *
   4  * Copyright 2007, 2008 Siemens AG
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * Written by:
  16  * Sergey Lapin <slapin@ossfans.org>
  17  * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
  18  * Maxim Osipov <maxim.osipov@siemens.com>
  19  */
  20
  21 #include <linux/gfp.h>
  22 #include <linux/kernel.h>
  23 #include <linux/if_arp.h>
  24 #include <linux/netdevice.h>
  25 #include <linux/ieee802154.h>
  26 #include <net/netlink.h>
  27 #include <net/genetlink.h>
  28 #include <net/sock.h>
  29 #include <linux/nl802154.h>
  30 #include <linux/export.h>
  31 #include <net/af_ieee802154.h>
  32 #include <net/ieee802154_netdev.h>
  33 #include <net/cfg802154.h>
  34
  35 #include "ieee802154.h"
  36
  37 static int nla_put_hwaddr(struct sk_buff *msg, int type, __le64 hwaddr,
  38                           int padattr)
  39 {
  40         return nla_put_u64_64bit(msg, type, swab64((__force u64)hwaddr),
  41                                  padattr);
  42 }
  43
  44 static __le64 nla_get_hwaddr(const struct nlattr *nla)
  45 {
  46         return ieee802154_devaddr_from_raw(nla_data(nla));
  47 }
  48
  49 static int nla_put_shortaddr(struct sk_buff *msg, int type, __le16 addr)
  50 {
  51         return nla_put_u16(msg, type, le16_to_cpu(addr));
  52 }
  53
  54 static __le16 nla_get_shortaddr(const struct nlattr *nla)
  55 {
  56         return cpu_to_le16(nla_get_u16(nla));
  57 }
  58
  59 static int ieee802154_nl_start_confirm(struct net_device *dev, u8 status)
  60 {
  61         struct sk_buff *msg;
  62
  63         pr_debug("%s\n", __func__);
  64
  65         msg = ieee802154_nl_create(0, IEEE802154_START_CONF);
  66         if (!msg)
  67                 return -ENOBUFS;
  68
  69         if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
  70             nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
  71             nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
  72                     dev->dev_addr) ||
  73             nla_put_u8(msg, IEEE802154_ATTR_STATUS, status))
  74                 goto nla_put_failure;
  75         return ieee802154_nl_mcast(msg, IEEE802154_COORD_MCGRP);
  76
  77 nla_put_failure:
  78         nlmsg_free(msg);
  79         return -ENOBUFS;
  80 }
  81
  82 static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 portid,
  83                                     u32 seq, int flags, struct net_device *dev)
  84 {
  85         void *hdr;
  86         struct wpan_phy *phy;
  87         struct ieee802154_mlme_ops *ops;
  88         __le16 short_addr, pan_id;
  89
  90         pr_debug("%s\n", __func__);
  91
  92         hdr = genlmsg_put(msg, 0, seq, &nl802154_family, flags,
  93                           IEEE802154_LIST_IFACE);
  94         if (!hdr)
  95                 goto out;
  96
  97         ops = ieee802154_mlme_ops(dev);
  98         phy = dev->ieee802154_ptr->wpan_phy;
  99         BUG_ON(!phy);
 100         get_device(&phy->dev);
 101
 102         rtnl_lock();
 103         short_addr = dev->ieee802154_ptr->short_addr;
 104         pan_id = dev->ieee802154_ptr->pan_id;
 105         rtnl_unlock();
 106
 107         if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
 108             nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
 109             nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
 110             nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
 111                     dev->dev_addr) ||
 112             nla_put_shortaddr(msg, IEEE802154_ATTR_SHORT_ADDR, short_addr) ||
 113             nla_put_shortaddr(msg, IEEE802154_ATTR_PAN_ID, pan_id))
 114                 goto nla_put_failure;
 115
 116         if (ops->get_mac_params) {
 117                 struct ieee802154_mac_params params;
 118
 119                 rtnl_lock();
 120                 ops->get_mac_params(dev, &params);
 121                 rtnl_unlock();
 122
 123                 if (nla_put_s8(msg, IEEE802154_ATTR_TXPOWER,
 124                                params.transmit_power / 100) ||
 125                     nla_put_u8(msg, IEEE802154_ATTR_LBT_ENABLED, params.lbt) ||
 126                     nla_put_u8(msg, IEEE802154_ATTR_CCA_MODE,
 127                                params.cca.mode) ||
 128                     nla_put_s32(msg, IEEE802154_ATTR_CCA_ED_LEVEL,
 129                                 params.cca_ed_level / 100) ||
 130                     nla_put_u8(msg, IEEE802154_ATTR_CSMA_RETRIES,
 131                                params.csma_retries) ||
 132                     nla_put_u8(msg, IEEE802154_ATTR_CSMA_MIN_BE,
 133                                params.min_be) ||
 134                     nla_put_u8(msg, IEEE802154_ATTR_CSMA_MAX_BE,
 135                                params.max_be) ||
 136                     nla_put_s8(msg, IEEE802154_ATTR_FRAME_RETRIES,
 137                                params.frame_retries))
 138                         goto nla_put_failure;
 139         }
 140
 141         wpan_phy_put(phy);
 142         genlmsg_end(msg, hdr);
 143         return 0;
 144
 145 nla_put_failure:
 146         wpan_phy_put(phy);
 147         genlmsg_cancel(msg, hdr);
 148 out:
 149         return -EMSGSIZE;
 150 }
 151
 152 /* Requests from userspace */
 153 static struct net_device *ieee802154_nl_get_dev(struct genl_info *info)
 154 {
 155         struct net_device *dev;
 156
 157         if (info->attrs[IEEE802154_ATTR_DEV_NAME]) {
 158                 char name[IFNAMSIZ + 1];
 159
 160                 nla_strlcpy(name, info->attrs[IEEE802154_ATTR_DEV_NAME],
 161                             sizeof(name));
 162                 dev = dev_get_by_name(&init_net, name);
 163         } else if (info->attrs[IEEE802154_ATTR_DEV_INDEX]) {
 164                 dev = dev_get_by_index(&init_net,
 165                         nla_get_u32(info->attrs[IEEE802154_ATTR_DEV_INDEX]));
 166         } else {
 167                 return NULL;
 168         }
 169
 170         if (!dev)
 171                 return NULL;
 172
 173         if (dev->type != ARPHRD_IEEE802154) {
 174                 dev_put(dev);
 175                 return NULL;
 176         }
 177
 178         return dev;
 179 }
 180
 181 int ieee802154_associate_req(struct sk_buff *skb, struct genl_info *info)
 182 {
 183         struct net_device *dev;
 184         struct ieee802154_addr addr;
 185         u8 page;
 186         int ret = -EOPNOTSUPP;
 187
 188         if (!info->attrs[IEEE802154_ATTR_CHANNEL] ||
 189             !info->attrs[IEEE802154_ATTR_COORD_PAN_ID] ||
 190             (!info->attrs[IEEE802154_ATTR_COORD_HW_ADDR] &&
 191                 !info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]) ||
 192             !info->attrs[IEEE802154_ATTR_CAPABILITY])
 193                 return -EINVAL;
 194
 195         dev = ieee802154_nl_get_dev(info);
 196         if (!dev)
 197                 return -ENODEV;
 198         if (!ieee802154_mlme_ops(dev)->assoc_req)
 199                 goto out;
 200
 201         if (info->attrs[IEEE802154_ATTR_COORD_HW_ADDR]) {
 202                 addr.mode = IEEE802154_ADDR_LONG;
 203                 addr.extended_addr = nla_get_hwaddr(
 204                                 info->attrs[IEEE802154_ATTR_COORD_HW_ADDR]);
 205         } else {
 206                 addr.mode = IEEE802154_ADDR_SHORT;
 207                 addr.short_addr = nla_get_shortaddr(
 208                                 info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]);
 209         }
 210         addr.pan_id = nla_get_shortaddr(
 211                         info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);
 212
 213         if (info->attrs[IEEE802154_ATTR_PAGE])
 214                 page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
 215         else
 216                 page = 0;
 217
 218         ret = ieee802154_mlme_ops(dev)->assoc_req(dev, &addr,
 219                         nla_get_u8(info->attrs[IEEE802154_ATTR_CHANNEL]),
 220                         page,
 221                         nla_get_u8(info->attrs[IEEE802154_ATTR_CAPABILITY]));
 222
 223 out:
 224         dev_put(dev);
 225         return ret;
 226 }
 227
 228 int ieee802154_associate_resp(struct sk_buff *skb, struct genl_info *info)
 229 {
 230         struct net_device *dev;
 231         struct ieee802154_addr addr;
 232         int ret = -EOPNOTSUPP;
 233
 234         if (!info->attrs[IEEE802154_ATTR_STATUS] ||
 235             !info->attrs[IEEE802154_ATTR_DEST_HW_ADDR] ||
 236             !info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR])
 237                 return -EINVAL;
 238
 239         dev = ieee802154_nl_get_dev(info);
 240         if (!dev)
 241                 return -ENODEV;
 242         if (!ieee802154_mlme_ops(dev)->assoc_resp)
 243                 goto out;
 244
 245         addr.mode = IEEE802154_ADDR_LONG;
 246         addr.extended_addr = nla_get_hwaddr(
 247                         info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]);
 248         rtnl_lock();
 249         addr.pan_id = dev->ieee802154_ptr->pan_id;
 250         rtnl_unlock();
 251
 252         ret = ieee802154_mlme_ops(dev)->assoc_resp(dev, &addr,
 253                 nla_get_shortaddr(info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]),
 254                 nla_get_u8(info->attrs[IEEE802154_ATTR_STATUS]));
 255
 256 out:
 257         dev_put(dev);
 258         return ret;
 259 }
 260
 261 int ieee802154_disassociate_req(struct sk_buff *skb, struct genl_info *info)
 262 {
 263         struct net_device *dev;
 264         struct ieee802154_addr addr;
 265         int ret = -EOPNOTSUPP;
 266
 267         if ((!info->attrs[IEEE802154_ATTR_DEST_HW_ADDR] &&
 268             !info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]) ||
 269             !info->attrs[IEEE802154_ATTR_REASON])
 270                 return -EINVAL;
 271
 272         dev = ieee802154_nl_get_dev(info);
 273         if (!dev)
 274                 return -ENODEV;
 275         if (!ieee802154_mlme_ops(dev)->disassoc_req)
 276                 goto out;
 277
 278         if (info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]) {
 279                 addr.mode = IEEE802154_ADDR_LONG;
 280                 addr.extended_addr = nla_get_hwaddr(
 281                                 info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]);
 282         } else {
 283                 addr.mode = IEEE802154_ADDR_SHORT;
 284                 addr.short_addr = nla_get_shortaddr(
 285                                 info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]);
 286         }
 287         rtnl_lock();
 288         addr.pan_id = dev->ieee802154_ptr->pan_id;
 289         rtnl_unlock();
 290
 291         ret = ieee802154_mlme_ops(dev)->disassoc_req(dev, &addr,
 292                         nla_get_u8(info->attrs[IEEE802154_ATTR_REASON]));
 293
 294 out:
 295         dev_put(dev);
 296         return ret;
 297 }
 298
 299 /* PANid, channel, beacon_order = 15, superframe_order = 15,
 300  * PAN_coordinator, battery_life_extension = 0,
 301  * coord_realignment = 0, security_enable = 0
 302 */
 303 int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info)
 304 {
 305         struct net_device *dev;
 306         struct ieee802154_addr addr;
 307
 308         u8 channel, bcn_ord, sf_ord;
 309         u8 page;
 310         int pan_coord, blx, coord_realign;
 311         int ret = -EBUSY;
 312
 313         if (!info->attrs[IEEE802154_ATTR_COORD_PAN_ID] ||
 314             !info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR] ||
 315             !info->attrs[IEEE802154_ATTR_CHANNEL] ||
 316             !info->attrs[IEEE802154_ATTR_BCN_ORD] ||
 317             !info->attrs[IEEE802154_ATTR_SF_ORD] ||
 318             !info->attrs[IEEE802154_ATTR_PAN_COORD] ||
 319             !info->attrs[IEEE802154_ATTR_BAT_EXT] ||
 320             !info->attrs[IEEE802154_ATTR_COORD_REALIGN]
 321          )
 322                 return -EINVAL;
 323
 324         dev = ieee802154_nl_get_dev(info);
 325         if (!dev)
 326                 return -ENODEV;
 327
 328         if (netif_running(dev))
 329                 goto out;
 330
 331         if (!ieee802154_mlme_ops(dev)->start_req) {
 332                 ret = -EOPNOTSUPP;
 333                 goto out;
 334         }
 335
 336         addr.mode = IEEE802154_ADDR_SHORT;
 337         addr.short_addr = nla_get_shortaddr(
 338                         info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]);
 339         addr.pan_id = nla_get_shortaddr(
 340                         info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);
 341
 342         channel = nla_get_u8(info->attrs[IEEE802154_ATTR_CHANNEL]);
 343         bcn_ord = nla_get_u8(info->attrs[IEEE802154_ATTR_BCN_ORD]);
 344         sf_ord = nla_get_u8(info->attrs[IEEE802154_ATTR_SF_ORD]);
 345         pan_coord = nla_get_u8(info->attrs[IEEE802154_ATTR_PAN_COORD]);
 346         blx = nla_get_u8(info->attrs[IEEE802154_ATTR_BAT_EXT]);
 347         coord_realign = nla_get_u8(info->attrs[IEEE802154_ATTR_COORD_REALIGN]);
 348
 349         if (info->attrs[IEEE802154_ATTR_PAGE])
 350                 page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
 351         else
 352                 page = 0;
 353
 354         if (addr.short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST)) {
 355                 ieee802154_nl_start_confirm(dev, IEEE802154_NO_SHORT_ADDRESS);
 356                 dev_put(dev);
 357                 return -EINVAL;
 358         }
 359
 360         rtnl_lock();
 361         ret = ieee802154_mlme_ops(dev)->start_req(dev, &addr, channel, page,
 362                 bcn_ord, sf_ord, pan_coord, blx, coord_realign);
 363         rtnl_unlock();
 364
 365         /* FIXME: add validation for unused parameters to be sane
 366          * for SoftMAC
 367          */
 368         ieee802154_nl_start_confirm(dev, IEEE802154_SUCCESS);
 369
 370 out:
 371         dev_put(dev);
 372         return ret;
 373 }
 374
 375 int ieee802154_scan_req(struct sk_buff *skb, struct genl_info *info)
 376 {
 377         struct net_device *dev;
 378         int ret = -EOPNOTSUPP;
 379         u8 type;
 380         u32 channels;
 381         u8 duration;
 382         u8 page;
 383
 384         if (!info->attrs[IEEE802154_ATTR_SCAN_TYPE] ||
 385             !info->attrs[IEEE802154_ATTR_CHANNELS] ||
 386             !info->attrs[IEEE802154_ATTR_DURATION])
 387                 return -EINVAL;
 388
 389         dev = ieee802154_nl_get_dev(info);
 390         if (!dev)
 391                 return -ENODEV;
 392         if (!ieee802154_mlme_ops(dev)->scan_req)
 393                 goto out;
 394
 395         type = nla_get_u8(info->attrs[IEEE802154_ATTR_SCAN_TYPE]);
 396         channels = nla_get_u32(info->attrs[IEEE802154_ATTR_CHANNELS]);
 397         duration = nla_get_u8(info->attrs[IEEE802154_ATTR_DURATION]);
 398
 399         if (info->attrs[IEEE802154_ATTR_PAGE])
 400                 page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
 401         else
 402                 page = 0;
 403
 404         ret = ieee802154_mlme_ops(dev)->scan_req(dev, type, channels,
 405                                                  page, duration);
 406
 407 out:
 408         dev_put(dev);
 409         return ret;
 410 }
 411
 412 int ieee802154_list_iface(struct sk_buff *skb, struct genl_info *info)
 413 {
 414         /* Request for interface name, index, type, IEEE address,
 415          * PAN Id, short address
 416          */
 417         struct sk_buff *msg;
 418         struct net_device *dev = NULL;
 419         int rc = -ENOBUFS;
 420
 421         pr_debug("%s\n", __func__);
 422
 423         dev = ieee802154_nl_get_dev(info);
 424         if (!dev)
 425                 return -ENODEV;
 426
 427         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 428         if (!msg)
 429                 goto out_dev;
 430
 431         rc = ieee802154_nl_fill_iface(msg, info->snd_portid, info->snd_seq,
 432                                       0, dev);
 433         if (rc < 0)
 434                 goto out_free;
 435
 436         dev_put(dev);
 437
 438         return genlmsg_reply(msg, info);
 439 out_free:
 440         nlmsg_free(msg);
 441 out_dev:
 442         dev_put(dev);
 443         return rc;
 444 }
 445
 446 int ieee802154_dump_iface(struct sk_buff *skb, struct netlink_callback *cb)
 447 {
 448         struct net *net = sock_net(skb->sk);
 449         struct net_device *dev;
 450         int idx;
 451         int s_idx = cb->args[0];
 452
 453         pr_debug("%s\n", __func__);
 454
 455         idx = 0;
 456         for_each_netdev(net, dev) {
 457                 if (idx < s_idx || dev->type != ARPHRD_IEEE802154)
 458                         goto cont;
 459
 460                 if (ieee802154_nl_fill_iface(skb, NETLINK_CB(cb->skb).portid,
 461                                              cb->nlh->nlmsg_seq,
 462                                              NLM_F_MULTI, dev) < 0)
 463                         break;
 464 cont:
 465                 idx++;
 466         }
 467         cb->args[0] = idx;
 468
 469         return skb->len;
 470 }
 471
 472 int ieee802154_set_macparams(struct sk_buff *skb, struct genl_info *info)
 473 {
 474         struct net_device *dev = NULL;
 475         struct ieee802154_mlme_ops *ops;
 476         struct ieee802154_mac_params params;
 477         struct wpan_phy *phy;
 478         int rc = -EINVAL;
 479
 480         pr_debug("%s\n", __func__);
 481
 482         dev = ieee802154_nl_get_dev(info);
 483         if (!dev)
 484                 return -ENODEV;
 485
 486         ops = ieee802154_mlme_ops(dev);
 487
 488         if (!ops->get_mac_params || !ops->set_mac_params) {
 489                 rc = -EOPNOTSUPP;
 490                 goto out;
 491         }
 492
 493         if (netif_running(dev)) {
 494                 rc = -EBUSY;
 495                 goto out;
 496         }
 497
 498         if (!info->attrs[IEEE802154_ATTR_LBT_ENABLED] &&
 499             !info->attrs[IEEE802154_ATTR_CCA_MODE] &&
 500             !info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL] &&
 501             !info->attrs[IEEE802154_ATTR_CSMA_RETRIES] &&
 502             !info->attrs[IEEE802154_ATTR_CSMA_MIN_BE] &&
 503             !info->attrs[IEEE802154_ATTR_CSMA_MAX_BE] &&
 504             !info->attrs[IEEE802154_ATTR_FRAME_RETRIES])
 505                 goto out;
 506
 507         phy = dev->ieee802154_ptr->wpan_phy;
 508         get_device(&phy->dev);
 509
 510         rtnl_lock();
 511         ops->get_mac_params(dev, &params);
 512
 513         if (info->attrs[IEEE802154_ATTR_TXPOWER])
 514                 params.transmit_power = nla_get_s8(info->attrs[IEEE802154_ATTR_TXPOWER]) * 100;
 515
 516         if (info->attrs[IEEE802154_ATTR_LBT_ENABLED])
 517                 params.lbt = nla_get_u8(info->attrs[IEEE802154_ATTR_LBT_ENABLED]);
 518
 519         if (info->attrs[IEEE802154_ATTR_CCA_MODE])
 520                 params.cca.mode = nla_get_u8(info->attrs[IEEE802154_ATTR_CCA_MODE]);
 521
 522         if (info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL])
 523                 params.cca_ed_level = nla_get_s32(info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL]) * 100;
 524
 525         if (info->attrs[IEEE802154_ATTR_CSMA_RETRIES])
 526                 params.csma_retries = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_RETRIES]);
 527
 528         if (info->attrs[IEEE802154_ATTR_CSMA_MIN_BE])
 529                 params.min_be = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_MIN_BE]);
 530
 531         if (info->attrs[IEEE802154_ATTR_CSMA_MAX_BE])
 532                 params.max_be = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_MAX_BE]);
 533
 534         if (info->attrs[IEEE802154_ATTR_FRAME_RETRIES])
 535                 params.frame_retries = nla_get_s8(info->attrs[IEEE802154_ATTR_FRAME_RETRIES]);
 536
 537         rc = ops->set_mac_params(dev, &params);
 538         rtnl_unlock();
 539
 540         wpan_phy_put(phy);
 541         dev_put(dev);
 542
 543         return 0;
 544
 545 out:
 546         dev_put(dev);
 547         return rc;
 548 }
 549
 550 static int
 551 ieee802154_llsec_parse_key_id(struct genl_info *info,
 552                               struct ieee802154_llsec_key_id *desc)
 553 {
 554         memset(desc, 0, sizeof(*desc));
 555
 556         if (!info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE])
 557                 return -EINVAL;
 558
 559         desc->mode = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE]);
 560
 561         if (desc->mode == IEEE802154_SCF_KEY_IMPLICIT) {
 562                 if (!info->attrs[IEEE802154_ATTR_PAN_ID])
 563                         return -EINVAL;
 564
 565                 desc->device_addr.pan_id = nla_get_shortaddr(info->attrs[IEEE802154_ATTR_PAN_ID]);
 566
 567                 if (info->attrs[IEEE802154_ATTR_SHORT_ADDR]) {
 568                         desc->device_addr.mode = IEEE802154_ADDR_SHORT;
 569                         desc->device_addr.short_addr = nla_get_shortaddr(info->attrs[IEEE802154_ATTR_SHORT_ADDR]);
 570                 } else {
 571                         if (!info->attrs[IEEE802154_ATTR_HW_ADDR])
 572                                 return -EINVAL;
 573
 574                         desc->device_addr.mode = IEEE802154_ADDR_LONG;
 575                         desc->device_addr.extended_addr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]);
 576                 }
 577         }
 578
 579         if (desc->mode != IEEE802154_SCF_KEY_IMPLICIT &&
 580             !info->attrs[IEEE802154_ATTR_LLSEC_KEY_ID])
 581                 return -EINVAL;
 582
 583         if (desc->mode == IEEE802154_SCF_KEY_SHORT_INDEX &&
 584             !info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_SHORT])
 585                 return -EINVAL;
 586
 587         if (desc->mode == IEEE802154_SCF_KEY_HW_INDEX &&
 588             !info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_EXTENDED])
 589                 return -EINVAL;
 590
 591         if (desc->mode != IEEE802154_SCF_KEY_IMPLICIT)
 592                 desc->id = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_KEY_ID]);
 593
 594         switch (desc->mode) {
 595         case IEEE802154_SCF_KEY_SHORT_INDEX:
 596         {
 597                 u32 source = nla_get_u32(info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_SHORT]);
 598
 599                 desc->short_source = cpu_to_le32(source);
 600                 break;
 601         }
 602         case IEEE802154_SCF_KEY_HW_INDEX:
 603                 desc->extended_source = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_EXTENDED]);
 604                 break;
 605         }
 606
 607         return 0;
 608 }
 609
 610 static int
 611 ieee802154_llsec_fill_key_id(struct sk_buff *msg,
 612                              const struct ieee802154_llsec_key_id *desc)
 613 {
 614         if (nla_put_u8(msg, IEEE802154_ATTR_LLSEC_KEY_MODE, desc->mode))
 615                 return -EMSGSIZE;
 616
 617         if (desc->mode == IEEE802154_SCF_KEY_IMPLICIT) {
 618                 if (nla_put_shortaddr(msg, IEEE802154_ATTR_PAN_ID,
 619                                       desc->device_addr.pan_id))
 620                         return -EMSGSIZE;
 621
 622                 if (desc->device_addr.mode == IEEE802154_ADDR_SHORT &&
 623                     nla_put_shortaddr(msg, IEEE802154_ATTR_SHORT_ADDR,
 624                                       desc->device_addr.short_addr))
 625                         return -EMSGSIZE;
 626
 627                 if (desc->device_addr.mode == IEEE802154_ADDR_LONG &&
 628                     nla_put_hwaddr(msg, IEEE802154_ATTR_HW_ADDR,
 629                                    desc->device_addr.extended_addr,
 630                                    IEEE802154_ATTR_PAD))
 631                         return -EMSGSIZE;
 632         }
 633
 634         if (desc->mode != IEEE802154_SCF_KEY_IMPLICIT &&
 635             nla_put_u8(msg, IEEE802154_ATTR_LLSEC_KEY_ID, desc->id))
 636                 return -EMSGSIZE;
 637
 638         if (desc->mode == IEEE802154_SCF_KEY_SHORT_INDEX &&
 639             nla_put_u32(msg, IEEE802154_ATTR_LLSEC_KEY_SOURCE_SHORT,
 640                         le32_to_cpu(desc->short_source)))
 641                 return -EMSGSIZE;
 642
 643         if (desc->mode == IEEE802154_SCF_KEY_HW_INDEX &&
 644             nla_put_hwaddr(msg, IEEE802154_ATTR_LLSEC_KEY_SOURCE_EXTENDED,
 645                            desc->extended_source, IEEE802154_ATTR_PAD))
 646                 return -EMSGSIZE;
 647
 648         return 0;
 649 }
 650
 651 int ieee802154_llsec_getparams(struct sk_buff *skb, struct genl_info *info)
 652 {
 653         struct sk_buff *msg;
 654         struct net_device *dev = NULL;
 655         int rc = -ENOBUFS;
 656         struct ieee802154_mlme_ops *ops;
 657         void *hdr;
 658         struct ieee802154_llsec_params params;
 659
 660         pr_debug("%s\n", __func__);
 661
 662         dev = ieee802154_nl_get_dev(info);
 663         if (!dev)
 664                 return -ENODEV;
 665
 666         ops = ieee802154_mlme_ops(dev);
 667         if (!ops->llsec) {
 668                 rc = -EOPNOTSUPP;
 669                 goto out_dev;
 670         }
 671
 672         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 673         if (!msg)
 674                 goto out_dev;
 675
 676         hdr = genlmsg_put(msg, 0, info->snd_seq, &nl802154_family, 0,
 677                           IEEE802154_LLSEC_GETPARAMS);
 678         if (!hdr)
 679                 goto out_free;
 680
 681         rc = ops->llsec->get_params(dev, &params);
 682         if (rc < 0)
 683                 goto out_free;
 684
 685         if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
 686             nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
 687             nla_put_u8(msg, IEEE802154_ATTR_LLSEC_ENABLED, params.enabled) ||
 688             nla_put_u8(msg, IEEE802154_ATTR_LLSEC_SECLEVEL, params.out_level) ||
 689             nla_put_u32(msg, IEEE802154_ATTR_LLSEC_FRAME_COUNTER,
 690                         be32_to_cpu(params.frame_counter)) ||
 691             ieee802154_llsec_fill_key_id(msg, &params.out_key)) {
 692                 rc = -ENOBUFS;
 693                 goto out_free;
 694         }
 695
 696         dev_put(dev);
 697
 698         return ieee802154_nl_reply(msg, info);
 699 out_free:
 700         nlmsg_free(msg);
 701 out_dev:
 702         dev_put(dev);
 703         return rc;
 704 }
 705
 706 int ieee802154_llsec_setparams(struct sk_buff *skb, struct genl_info *info)
 707 {
 708         struct net_device *dev = NULL;
 709         int rc = -EINVAL;
 710         struct ieee802154_mlme_ops *ops;
 711         struct ieee802154_llsec_params params;
 712         int changed = 0;
 713
 714         pr_debug("%s\n", __func__);
 715
 716         dev = ieee802154_nl_get_dev(info);
 717         if (!dev)
 718                 return -ENODEV;
 719
 720         if (!info->attrs[IEEE802154_ATTR_LLSEC_ENABLED] &&
 721             !info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE] &&
 722             !info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL])
 723                 goto out;
 724
 725         ops = ieee802154_mlme_ops(dev);
 726         if (!ops->llsec) {
 727                 rc = -EOPNOTSUPP;
 728                 goto out;
 729         }
 730
 731         if (info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL] &&
 732             nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL]) > 7)
 733                 goto out;
 734
 735         if (info->attrs[IEEE802154_ATTR_LLSEC_ENABLED]) {
 736                 params.enabled = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_ENABLED]);
 737                 changed |= IEEE802154_LLSEC_PARAM_ENABLED;
 738         }
 739
 740         if (info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE]) {
 741                 if (ieee802154_llsec_parse_key_id(info, &params.out_key))
 742                         goto out;
 743
 744                 changed |= IEEE802154_LLSEC_PARAM_OUT_KEY;
 745         }
 746
 747         if (info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL]) {
 748                 params.out_level = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL]);
 749                 changed |= IEEE802154_LLSEC_PARAM_OUT_LEVEL;
 750         }
 751
 752         if (info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]) {
 753                 u32 fc = nla_get_u32(info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]);
 754
 755                 params.frame_counter = cpu_to_be32(fc);
 756                 changed |= IEEE802154_LLSEC_PARAM_FRAME_COUNTER;
 757         }
 758
 759         rc = ops->llsec->set_params(dev, &params, changed);
 760
 761         dev_put(dev);
 762
 763         return rc;
 764 out:
 765         dev_put(dev);
 766         return rc;
 767 }
 768
 769 struct llsec_dump_data {
 770         struct sk_buff *skb;
 771         int s_idx, s_idx2;
 772         int portid;
 773         int nlmsg_seq;
 774         struct net_device *dev;
 775         struct ieee802154_mlme_ops *ops;
 776         struct ieee802154_llsec_table *table;
 777 };
 778
 779 static int
 780 ieee802154_llsec_dump_table(struct sk_buff *skb, struct netlink_callback *cb,
 781                             int (*step)(struct llsec_dump_data *))
 782 {
 783         struct net *net = sock_net(skb->sk);
 784         struct net_device *dev;
 785         struct llsec_dump_data data;
 786         int idx = 0;
 787         int first_dev = cb->args[0];
 788         int rc;
 789
 790         for_each_netdev(net, dev) {
 791                 if (idx < first_dev || dev->type != ARPHRD_IEEE802154)
 792                         goto skip;
 793
 794                 data.ops = ieee802154_mlme_ops(dev);
 795                 if (!data.ops->llsec)
 796                         goto skip;
 797
 798                 data.skb = skb;
 799                 data.s_idx = cb->args[1];
 800                 data.s_idx2 = cb->args[2];
 801                 data.dev = dev;
 802                 data.portid = NETLINK_CB(cb->skb).portid;
 803                 data.nlmsg_seq = cb->nlh->nlmsg_seq;
 804
 805                 data.ops->llsec->lock_table(dev);
 806                 data.ops->llsec->get_table(data.dev, &data.table);
 807                 rc = step(&data);
 808                 data.ops->llsec->unlock_table(dev);
 809
 810                 if (rc < 0)
 811                         break;
 812
 813 skip:
 814                 idx++;
 815         }
 816         cb->args[0] = idx;
 817
 818         return skb->len;
 819 }
 820
 821 static int
 822 ieee802154_nl_llsec_change(struct sk_buff *skb, struct genl_info *info,
 823                            int (*fn)(struct net_device*, struct genl_info*))
 824 {
 825         struct net_device *dev = NULL;
 826         int rc = -EINVAL;
 827
 828         dev = ieee802154_nl_get_dev(info);
 829         if (!dev)
 830                 return -ENODEV;
 831
 832         if (!ieee802154_mlme_ops(dev)->llsec)
 833                 rc = -EOPNOTSUPP;
 834         else
 835                 rc = fn(dev, info);
 836
 837         dev_put(dev);
 838         return rc;
 839 }
 840
 841 static int
 842 ieee802154_llsec_parse_key(struct genl_info *info,
 843                            struct ieee802154_llsec_key *key)
 844 {
 845         u8 frames;
 846         u32 commands[256 / 32];
 847
 848         memset(key, 0, sizeof(*key));
 849
 850         if (!info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_FRAME_TYPES] ||
 851             !info->attrs[IEEE802154_ATTR_LLSEC_KEY_BYTES])
 852                 return -EINVAL;
 853
 854         frames = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_FRAME_TYPES]);
 855         if ((frames & BIT(IEEE802154_FC_TYPE_MAC_CMD)) &&
 856             !info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS])
 857                 return -EINVAL;
 858
 859         if (info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS]) {
 860                 nla_memcpy(commands,
 861                            info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS],
 862                            256 / 8);
 863
 864                 if (commands[0] || commands[1] || commands[2] || commands[3] ||
 865                     commands[4] || commands[5] || commands[6] ||
 866                     commands[7] >= BIT(IEEE802154_CMD_GTS_REQ + 1))
 867                         return -EINVAL;
 868
 869                 key->cmd_frame_ids = commands[7];
 870         }
 871
 872         key->frame_types = frames;
 873
 874         nla_memcpy(key->key, info->attrs[IEEE802154_ATTR_LLSEC_KEY_BYTES],
 875                    IEEE802154_LLSEC_KEY_SIZE);
 876
 877         return 0;
 878 }
 879
 880 static int llsec_add_key(struct net_device *dev, struct genl_info *info)
 881 {
 882         struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
 883         struct ieee802154_llsec_key key;
 884         struct ieee802154_llsec_key_id id;
 885
 886         if (ieee802154_llsec_parse_key(info, &key) ||
 887             ieee802154_llsec_parse_key_id(info, &id))
 888                 return -EINVAL;
 889
 890         return ops->llsec->add_key(dev, &id, &key);
 891 }
 892
 893 int ieee802154_llsec_add_key(struct sk_buff *skb, struct genl_info *info)
 894 {
 895         if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) !=
 896             (NLM_F_CREATE | NLM_F_EXCL))
 897                 return -EINVAL;
 898
 899         return ieee802154_nl_llsec_change(skb, info, llsec_add_key);
 900 }
 901
 902 static int llsec_remove_key(struct net_device *dev, struct genl_info *info)
 903 {
 904         struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
 905         struct ieee802154_llsec_key_id id;
 906
 907         if (ieee802154_llsec_parse_key_id(info, &id))
 908                 return -EINVAL;
 909
 910         return ops->llsec->del_key(dev, &id);
 911 }
 912
 913 int ieee802154_llsec_del_key(struct sk_buff *skb, struct genl_info *info)
 914 {
 915         return ieee802154_nl_llsec_change(skb, info, llsec_remove_key);
 916 }
 917
 918 static int
 919 ieee802154_nl_fill_key(struct sk_buff *msg, u32 portid, u32 seq,
 920                        const struct ieee802154_llsec_key_entry *key,
 921                        const struct net_device *dev)
 922 {
 923         void *hdr;
 924         u32 commands[256 / 32];
 925
 926         hdr = genlmsg_put(msg, 0, seq, &nl802154_family, NLM_F_MULTI,
 927                           IEEE802154_LLSEC_LIST_KEY);
 928         if (!hdr)
 929                 goto out;
 930
 931         if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
 932             nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
 933             ieee802154_llsec_fill_key_id(msg, &key->id) ||
 934             nla_put_u8(msg, IEEE802154_ATTR_LLSEC_KEY_USAGE_FRAME_TYPES,
 935                        key->key->frame_types))
 936                 goto nla_put_failure;
 937
 938         if (key->key->frame_types & BIT(IEEE802154_FC_TYPE_MAC_CMD)) {
 939                 memset(commands, 0, sizeof(commands));
 940                 commands[7] = key->key->cmd_frame_ids;
 941                 if (nla_put(msg, IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS,
 942                             sizeof(commands), commands))
 943                         goto nla_put_failure;
 944         }
 945
 946         if (nla_put(msg, IEEE802154_ATTR_LLSEC_KEY_BYTES,
 947                     IEEE802154_LLSEC_KEY_SIZE, key->key->key))
 948                 goto nla_put_failure;
 949
 950         genlmsg_end(msg, hdr);
 951         return 0;
 952
 953 nla_put_failure:
 954         genlmsg_cancel(msg, hdr);
 955 out:
 956         return -EMSGSIZE;
 957 }
 958
 959 static int llsec_iter_keys(struct llsec_dump_data *data)
 960 {
 961         struct ieee802154_llsec_key_entry *pos;
 962         int rc = 0, idx = 0;
 963
 964         list_for_each_entry(pos, &data->table->keys, list) {
 965                 if (idx++ < data->s_idx)
 966                         continue;
 967
 968                 if (ieee802154_nl_fill_key(data->skb, data->portid,
 969                                            data->nlmsg_seq, pos, data->dev)) {
 970                         rc = -EMSGSIZE;
 971                         break;
 972                 }
 973
 974                 data->s_idx++;
 975         }
 976
 977         return rc;
 978 }
 979
 980 int ieee802154_llsec_dump_keys(struct sk_buff *skb, struct netlink_callback *cb)
 981 {
 982         return ieee802154_llsec_dump_table(skb, cb, llsec_iter_keys);
 983 }
 984
 985 static int
 986 llsec_parse_dev(struct genl_info *info,
 987                 struct ieee802154_llsec_device *dev)
 988 {
 989         memset(dev, 0, sizeof(*dev));
 990
 991         if (!info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER] ||
 992             !info->attrs[IEEE802154_ATTR_HW_ADDR] ||
 993             !info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE] ||
 994             !info->attrs[IEEE802154_ATTR_LLSEC_DEV_KEY_MODE] ||
 995             (!!info->attrs[IEEE802154_ATTR_PAN_ID] !=
 996              !!info->attrs[IEEE802154_ATTR_SHORT_ADDR]))
 997                 return -EINVAL;
 998
 999         if (info->attrs[IEEE802154_ATTR_PAN_ID]) {
1000                 dev->pan_id = nla_get_shortaddr(info->attrs[IEEE802154_ATTR_PAN_ID]);
1001                 dev->short_addr = nla_get_shortaddr(info->attrs[IEEE802154_ATTR_SHORT_ADDR]);
1002         } else {
1003                 dev->short_addr = cpu_to_le16(IEEE802154_ADDR_UNDEF);
1004         }
1005
1006         dev->hwaddr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]);
1007         dev->frame_counter = nla_get_u32(info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]);
1008         dev->seclevel_exempt = !!nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE]);
1009         dev->key_mode = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_DEV_KEY_MODE]);
1010
1011         if (dev->key_mode >= __IEEE802154_LLSEC_DEVKEY_MAX)
1012                 return -EINVAL;
1013
1014         return 0;
1015 }
1016
1017 static int llsec_add_dev(struct net_device *dev, struct genl_info *info)
1018 {
1019         struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
1020         struct ieee802154_llsec_device desc;
1021
1022         if (llsec_parse_dev(info, &desc))
1023                 return -EINVAL;
1024
1025         return ops->llsec->add_dev(dev, &desc);
1026 }
1027
1028 int ieee802154_llsec_add_dev(struct sk_buff *skb, struct genl_info *info)
1029 {
1030         if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) !=
1031             (NLM_F_CREATE | NLM_F_EXCL))
1032                 return -EINVAL;
1033
1034         return ieee802154_nl_llsec_change(skb, info, llsec_add_dev);
1035 }
1036
1037 static int llsec_del_dev(struct net_device *dev, struct genl_info *info)
1038 {
1039         struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
1040         __le64 devaddr;
1041
1042         if (!info->attrs[IEEE802154_ATTR_HW_ADDR])
1043                 return -EINVAL;
1044
1045         devaddr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]);
1046
1047         return ops->llsec->del_dev(dev, devaddr);
1048 }
1049
1050 int ieee802154_llsec_del_dev(struct sk_buff *skb, struct genl_info *info)
1051 {
1052         return ieee802154_nl_llsec_change(skb, info, llsec_del_dev);
1053 }
1054
1055 static int
1056 ieee802154_nl_fill_dev(struct sk_buff *msg, u32 portid, u32 seq,
1057                        const struct ieee802154_llsec_device *desc,
1058                        const struct net_device *dev)
1059 {
1060         void *hdr;
1061
1062         hdr = genlmsg_put(msg, 0, seq, &nl802154_family, NLM_F_MULTI,
1063                           IEEE802154_LLSEC_LIST_DEV);
1064         if (!hdr)
1065                 goto out;
1066
1067         if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
1068             nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
1069             nla_put_shortaddr(msg, IEEE802154_ATTR_PAN_ID, desc->pan_id) ||
1070             nla_put_shortaddr(msg, IEEE802154_ATTR_SHORT_ADDR,
1071                               desc->short_addr) ||
1072             nla_put_hwaddr(msg, IEEE802154_ATTR_HW_ADDR, desc->hwaddr,
1073                            IEEE802154_ATTR_PAD) ||
1074             nla_put_u32(msg, IEEE802154_ATTR_LLSEC_FRAME_COUNTER,
1075                         desc->frame_counter) ||
1076             nla_put_u8(msg, IEEE802154_ATTR_LLSEC_DEV_OVERRIDE,
1077                        desc->seclevel_exempt) ||
1078             nla_put_u8(msg, IEEE802154_ATTR_LLSEC_DEV_KEY_MODE, desc->key_mode))
1079                 goto nla_put_failure;
1080
1081         genlmsg_end(msg, hdr);
1082         return 0;
1083
1084 nla_put_failure:
1085         genlmsg_cancel(msg, hdr);
1086 out:
1087         return -EMSGSIZE;
1088 }
1089
1090 static int llsec_iter_devs(struct llsec_dump_data *data)
1091 {
1092         struct ieee802154_llsec_device *pos;
1093         int rc = 0, idx = 0;
1094
1095         list_for_each_entry(pos, &data->table->devices, list) {
1096                 if (idx++ < data->s_idx)
1097                         continue;
1098
1099                 if (ieee802154_nl_fill_dev(data->skb, data->portid,
1100                                            data->nlmsg_seq, pos, data->dev)) {
1101                         rc = -EMSGSIZE;
1102                         break;
1103                 }
1104
1105                 data->s_idx++;
1106         }
1107
1108         return rc;
1109 }
1110
1111 int ieee802154_llsec_dump_devs(struct sk_buff *skb, struct netlink_callback *cb)
1112 {
1113         return ieee802154_llsec_dump_table(skb, cb, llsec_iter_devs);
1114 }
1115
1116 static int llsec_add_devkey(struct net_device *dev, struct genl_info *info)
1117 {
1118         struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
1119         struct ieee802154_llsec_device_key key;
1120         __le64 devaddr;
1121
1122         if (!info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER] ||
1123             !info->attrs[IEEE802154_ATTR_HW_ADDR] ||
1124             ieee802154_llsec_parse_key_id(info, &key.key_id))
1125                 return -EINVAL;
1126
1127         devaddr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]);
1128         key.frame_counter = nla_get_u32(info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]);
1129
1130         return ops->llsec->add_devkey(dev, devaddr, &key);
1131 }
1132
1133 int ieee802154_llsec_add_devkey(struct sk_buff *skb, struct genl_info *info)
1134 {
1135         if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) !=
1136             (NLM_F_CREATE | NLM_F_EXCL))
1137                 return -EINVAL;
1138
1139         return ieee802154_nl_llsec_change(skb, info, llsec_add_devkey);
1140 }
1141
1142 static int llsec_del_devkey(struct net_device *dev, struct genl_info *info)
1143 {
1144         struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
1145         struct ieee802154_llsec_device_key key;
1146         __le64 devaddr;
1147
1148         if (!info->attrs[IEEE802154_ATTR_HW_ADDR] ||
1149             ieee802154_llsec_parse_key_id(info, &key.key_id))
1150                 return -EINVAL;
1151
1152         devaddr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]);
1153
1154         return ops->llsec->del_devkey(dev, devaddr, &key);
1155 }
1156
1157 int ieee802154_llsec_del_devkey(struct sk_buff *skb, struct genl_info *info)
1158 {
1159         return ieee802154_nl_llsec_change(skb, info, llsec_del_devkey);
1160 }
1161
1162 static int
1163 ieee802154_nl_fill_devkey(struct sk_buff *msg, u32 portid, u32 seq,
1164                           __le64 devaddr,
1165                           const struct ieee802154_llsec_device_key *devkey,
1166                           const struct net_device *dev)
1167 {
1168         void *hdr;
1169
1170         hdr = genlmsg_put(msg, 0, seq, &nl802154_family, NLM_F_MULTI,
1171                           IEEE802154_LLSEC_LIST_DEVKEY);
1172         if (!hdr)
1173                 goto out;
1174
1175         if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
1176             nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
1177             nla_put_hwaddr(msg, IEEE802154_ATTR_HW_ADDR, devaddr,
1178                            IEEE802154_ATTR_PAD) ||
1179             nla_put_u32(msg, IEEE802154_ATTR_LLSEC_FRAME_COUNTER,
1180                         devkey->frame_counter) ||
1181             ieee802154_llsec_fill_key_id(msg, &devkey->key_id))
1182                 goto nla_put_failure;
1183
1184         genlmsg_end(msg, hdr);
1185         return 0;
1186
1187 nla_put_failure:
1188         genlmsg_cancel(msg, hdr);
1189 out:
1190         return -EMSGSIZE;
1191 }
1192
1193 static int llsec_iter_devkeys(struct llsec_dump_data *data)
1194 {
1195         struct ieee802154_llsec_device *dpos;
1196         struct ieee802154_llsec_device_key *kpos;
1197         int rc = 0, idx = 0, idx2;
1198
1199         list_for_each_entry(dpos, &data->table->devices, list) {
1200                 if (idx++ < data->s_idx)
1201                         continue;
1202
1203                 idx2 = 0;
1204
1205                 list_for_each_entry(kpos, &dpos->keys, list) {
1206                         if (idx2++ < data->s_idx2)
1207                                 continue;
1208
1209                         if (ieee802154_nl_fill_devkey(data->skb, data->portid,
1210                                                       data->nlmsg_seq,
1211                                                       dpos->hwaddr, kpos,
1212                                                       data->dev)) {
1213                                 return rc = -EMSGSIZE;
1214                         }
1215
1216                         data->s_idx2++;
1217                 }
1218
1219                 data->s_idx++;
1220         }
1221
1222         return rc;
1223 }
1224
1225 int ieee802154_llsec_dump_devkeys(struct sk_buff *skb,
1226                                   struct netlink_callback *cb)
1227 {
1228         return ieee802154_llsec_dump_table(skb, cb, llsec_iter_devkeys);
1229 }
1230
1231 static int
1232 llsec_parse_seclevel(struct genl_info *info,
1233                      struct ieee802154_llsec_seclevel *sl)
1234 {
1235         memset(sl, 0, sizeof(*sl));
1236
1237         if (!info->attrs[IEEE802154_ATTR_LLSEC_FRAME_TYPE] ||
1238             !info->attrs[IEEE802154_ATTR_LLSEC_SECLEVELS] ||
1239             !info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE])
1240                 return -EINVAL;
1241
1242         sl->frame_type = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_FRAME_TYPE]);
1243         if (sl->frame_type == IEEE802154_FC_TYPE_MAC_CMD) {
1244                 if (!info->attrs[IEEE802154_ATTR_LLSEC_CMD_FRAME_ID])
1245                         return -EINVAL;
1246
1247                 sl->cmd_frame_id = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_CMD_FRAME_ID]);
1248         }
1249
1250         sl->sec_levels = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_SECLEVELS]);
1251         sl->device_override = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE]);
1252
1253         return 0;
1254 }
1255
1256 static int llsec_add_seclevel(struct net_device *dev, struct genl_info *info)
1257 {
1258         struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
1259         struct ieee802154_llsec_seclevel sl;
1260
1261         if (llsec_parse_seclevel(info, &sl))
1262                 return -EINVAL;
1263
1264         return ops->llsec->add_seclevel(dev, &sl);
1265 }
1266
1267 int ieee802154_llsec_add_seclevel(struct sk_buff *skb, struct genl_info *info)
1268 {
1269         if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) !=
1270             (NLM_F_CREATE | NLM_F_EXCL))
1271                 return -EINVAL;
1272
1273         return ieee802154_nl_llsec_change(skb, info, llsec_add_seclevel);
1274 }
1275
1276 static int llsec_del_seclevel(struct net_device *dev, struct genl_info *info)
1277 {
1278         struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
1279         struct ieee802154_llsec_seclevel sl;
1280
1281         if (llsec_parse_seclevel(info, &sl))
1282                 return -EINVAL;
1283
1284         return ops->llsec->del_seclevel(dev, &sl);
1285 }
1286
1287 int ieee802154_llsec_del_seclevel(struct sk_buff *skb, struct genl_info *info)
1288 {
1289         return ieee802154_nl_llsec_change(skb, info, llsec_del_seclevel);
1290 }
1291
1292 static int
1293 ieee802154_nl_fill_seclevel(struct sk_buff *msg, u32 portid, u32 seq,
1294                             const struct ieee802154_llsec_seclevel *sl,
1295                             const struct net_device *dev)
1296 {
1297         void *hdr;
1298
1299         hdr = genlmsg_put(msg, 0, seq, &nl802154_family, NLM_F_MULTI,
1300                           IEEE802154_LLSEC_LIST_SECLEVEL);
1301         if (!hdr)
1302                 goto out;
1303
1304         if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
1305             nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
1306             nla_put_u8(msg, IEEE802154_ATTR_LLSEC_FRAME_TYPE, sl->frame_type) ||
1307             nla_put_u8(msg, IEEE802154_ATTR_LLSEC_SECLEVELS, sl->sec_levels) ||
1308             nla_put_u8(msg, IEEE802154_ATTR_LLSEC_DEV_OVERRIDE,
1309                        sl->device_override))
1310                 goto nla_put_failure;
1311
1312         if (sl->frame_type == IEEE802154_FC_TYPE_MAC_CMD &&
1313             nla_put_u8(msg, IEEE802154_ATTR_LLSEC_CMD_FRAME_ID,
1314                        sl->cmd_frame_id))
1315                 goto nla_put_failure;
1316
1317         genlmsg_end(msg, hdr);
1318         return 0;
1319
1320 nla_put_failure:
1321         genlmsg_cancel(msg, hdr);
1322 out:
1323         return -EMSGSIZE;
1324 }
1325
1326 static int llsec_iter_seclevels(struct llsec_dump_data *data)
1327 {
1328         struct ieee802154_llsec_seclevel *pos;
1329         int rc = 0, idx = 0;
1330
1331         list_for_each_entry(pos, &data->table->security_levels, list) {
1332                 if (idx++ < data->s_idx)
1333                         continue;
1334
1335                 if (ieee802154_nl_fill_seclevel(data->skb, data->portid,
1336                                                 data->nlmsg_seq, pos,
1337                                                 data->dev)) {
1338                         rc = -EMSGSIZE;
1339                         break;
1340                 }
1341
1342                 data->s_idx++;
1343         }
1344
1345         return rc;
1346 }
1347
1348 int ieee802154_llsec_dump_seclevels(struct sk_buff *skb,
1349                                     struct netlink_callback *cb)
1350 {
1351         return ieee802154_llsec_dump_table(skb, cb, llsec_iter_seclevels);
1352 }