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 {
  39         return nla_put_u64(msg, type, swab64((__force u64)hwaddr));
  40 }
  41
  42 static __le64 nla_get_hwaddr(const struct nlattr *nla)
  43 {
  44         return ieee802154_devaddr_from_raw(nla_data(nla));
  45 }
  46
  47 static int nla_put_shortaddr(struct sk_buff *msg, int type, __le16 addr)
  48 {
  49         return nla_put_u16(msg, type, le16_to_cpu(addr));
  50 }
  51
  52 static __le16 nla_get_shortaddr(const struct nlattr *nla)
  53 {
  54         return cpu_to_le16(nla_get_u16(nla));
  55 }
  56
  57 static int ieee802154_nl_start_confirm(struct net_device *dev, u8 status)
  58 {
  59         struct sk_buff *msg;
  60
  61         pr_debug("%s\n", __func__);
  62
  63         msg = ieee802154_nl_create(0, IEEE802154_START_CONF);
  64         if (!msg)
  65                 return -ENOBUFS;
  66
  67         if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
  68             nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
  69             nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
  70                     dev->dev_addr) ||
  71             nla_put_u8(msg, IEEE802154_ATTR_STATUS, status))
  72                 goto nla_put_failure;
  73         return ieee802154_nl_mcast(msg, IEEE802154_COORD_MCGRP);
  74
  75 nla_put_failure:
  76         nlmsg_free(msg);
  77         return -ENOBUFS;
  78 }
  79
  80 static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 portid,
  81                                     u32 seq, int flags, struct net_device *dev)
  82 {
  83         void *hdr;
  84         struct wpan_phy *phy;
  85         struct ieee802154_mlme_ops *ops;
  86         __le16 short_addr, pan_id;
  87
  88         pr_debug("%s\n", __func__);
  89
  90         hdr = genlmsg_put(msg, 0, seq, &nl802154_family, flags,
  91                           IEEE802154_LIST_IFACE);
  92         if (!hdr)
  93                 goto out;
  94
  95         ops = ieee802154_mlme_ops(dev);
  96         phy = dev->ieee802154_ptr->wpan_phy;
  97         BUG_ON(!phy);
  98         get_device(&phy->dev);
  99
 100         short_addr = ops->get_short_addr(dev);
 101         pan_id = ops->get_pan_id(dev);
 102
 103         if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
 104             nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
 105             nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
 106             nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
 107                     dev->dev_addr) ||
 108             nla_put_shortaddr(msg, IEEE802154_ATTR_SHORT_ADDR, short_addr) ||
 109             nla_put_shortaddr(msg, IEEE802154_ATTR_PAN_ID, pan_id))
 110                 goto nla_put_failure;
 111
 112         if (ops->get_mac_params) {
 113                 struct ieee802154_mac_params params;
 114
 115                 rtnl_lock();
 116                 ops->get_mac_params(dev, &params);
 117                 rtnl_unlock();
 118
 119                 if (nla_put_s8(msg, IEEE802154_ATTR_TXPOWER,
 120                                params.transmit_power) ||
 121                     nla_put_u8(msg, IEEE802154_ATTR_LBT_ENABLED, params.lbt) ||
 122                     nla_put_u8(msg, IEEE802154_ATTR_CCA_MODE,
 123                                params.cca.mode) ||
 124                     nla_put_s32(msg, IEEE802154_ATTR_CCA_ED_LEVEL,
 125                                 params.cca_ed_level) ||
 126                     nla_put_u8(msg, IEEE802154_ATTR_CSMA_RETRIES,
 127                                params.csma_retries) ||
 128                     nla_put_u8(msg, IEEE802154_ATTR_CSMA_MIN_BE,
 129                                params.min_be) ||
 130                     nla_put_u8(msg, IEEE802154_ATTR_CSMA_MAX_BE,
 131                                params.max_be) ||
 132                     nla_put_s8(msg, IEEE802154_ATTR_FRAME_RETRIES,
 133                                params.frame_retries))
 134                         goto nla_put_failure;
 135         }
 136
 137         wpan_phy_put(phy);
 138         genlmsg_end(msg, hdr);
 139         return 0;
 140
 141 nla_put_failure:
 142         wpan_phy_put(phy);
 143         genlmsg_cancel(msg, hdr);
 144 out:
 145         return -EMSGSIZE;
 146 }
 147
 148 /* Requests from userspace */
 149 static struct net_device *ieee802154_nl_get_dev(struct genl_info *info)
 150 {
 151         struct net_device *dev;
 152
 153         if (info->attrs[IEEE802154_ATTR_DEV_NAME]) {
 154                 char name[IFNAMSIZ + 1];
 155
 156                 nla_strlcpy(name, info->attrs[IEEE802154_ATTR_DEV_NAME],
 157                             sizeof(name));
 158                 dev = dev_get_by_name(&init_net, name);
 159         } else if (info->attrs[IEEE802154_ATTR_DEV_INDEX]) {
 160                 dev = dev_get_by_index(&init_net,
 161                         nla_get_u32(info->attrs[IEEE802154_ATTR_DEV_INDEX]));
 162         } else {
 163                 return NULL;
 164         }
 165
 166         if (!dev)
 167                 return NULL;
 168
 169         /* Check on mtu is currently a hacked solution because lowpan
 170          * and wpan have the same ARPHRD type.
 171          */
 172         if (dev->type != ARPHRD_IEEE802154 || dev->mtu != IEEE802154_MTU) {
 173                 dev_put(dev);
 174                 return NULL;
 175         }
 176
 177         return dev;
 178 }
 179
 180 int ieee802154_associate_req(struct sk_buff *skb, struct genl_info *info)
 181 {
 182         struct net_device *dev;
 183         struct ieee802154_addr addr;
 184         u8 page;
 185         int ret = -EOPNOTSUPP;
 186
 187         if (!info->attrs[IEEE802154_ATTR_CHANNEL] ||
 188             !info->attrs[IEEE802154_ATTR_COORD_PAN_ID] ||
 189             (!info->attrs[IEEE802154_ATTR_COORD_HW_ADDR] &&
 190                 !info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]) ||
 191             !info->attrs[IEEE802154_ATTR_CAPABILITY])
 192                 return -EINVAL;
 193
 194         dev = ieee802154_nl_get_dev(info);
 195         if (!dev)
 196                 return -ENODEV;
 197         if (!ieee802154_mlme_ops(dev)->assoc_req)
 198                 goto out;
 199
 200         if (info->attrs[IEEE802154_ATTR_COORD_HW_ADDR]) {
 201                 addr.mode = IEEE802154_ADDR_LONG;
 202                 addr.extended_addr = nla_get_hwaddr(
 203                                 info->attrs[IEEE802154_ATTR_COORD_HW_ADDR]);
 204         } else {
 205                 addr.mode = IEEE802154_ADDR_SHORT;
 206                 addr.short_addr = nla_get_shortaddr(
 207                                 info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]);
 208         }
 209         addr.pan_id = nla_get_shortaddr(
 210                         info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);
 211
 212         if (info->attrs[IEEE802154_ATTR_PAGE])
 213                 page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
 214         else
 215                 page = 0;
 216
 217         ret = ieee802154_mlme_ops(dev)->assoc_req(dev, &addr,
 218                         nla_get_u8(info->attrs[IEEE802154_ATTR_CHANNEL]),
 219                         page,
 220                         nla_get_u8(info->attrs[IEEE802154_ATTR_CAPABILITY]));
 221
 222 out:
 223         dev_put(dev);
 224         return ret;
 225 }
 226
 227 int ieee802154_associate_resp(struct sk_buff *skb, struct genl_info *info)
 228 {
 229         struct net_device *dev;
 230         struct ieee802154_addr addr;
 231         int ret = -EOPNOTSUPP;
 232
 233         if (!info->attrs[IEEE802154_ATTR_STATUS] ||
 234             !info->attrs[IEEE802154_ATTR_DEST_HW_ADDR] ||
 235             !info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR])
 236                 return -EINVAL;
 237
 238         dev = ieee802154_nl_get_dev(info);
 239         if (!dev)
 240                 return -ENODEV;
 241         if (!ieee802154_mlme_ops(dev)->assoc_resp)
 242                 goto out;
 243
 244         addr.mode = IEEE802154_ADDR_LONG;
 245         addr.extended_addr = nla_get_hwaddr(
 246                         info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]);
 247         addr.pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
 248
 249         ret = ieee802154_mlme_ops(dev)->assoc_resp(dev, &addr,
 250                 nla_get_shortaddr(info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]),
 251                 nla_get_u8(info->attrs[IEEE802154_ATTR_STATUS]));
 252
 253 out:
 254         dev_put(dev);
 255         return ret;
 256 }
 257
 258 int ieee802154_disassociate_req(struct sk_buff *skb, struct genl_info *info)
 259 {
 260         struct net_device *dev;
 261         struct ieee802154_addr addr;
 262         int ret = -EOPNOTSUPP;
 263
 264         if ((!info->attrs[IEEE802154_ATTR_DEST_HW_ADDR] &&
 265             !info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]) ||
 266             !info->attrs[IEEE802154_ATTR_REASON])
 267                 return -EINVAL;
 268
 269         dev = ieee802154_nl_get_dev(info);
 270         if (!dev)
 271                 return -ENODEV;
 272         if (!ieee802154_mlme_ops(dev)->disassoc_req)
 273                 goto out;
 274
 275         if (info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]) {
 276                 addr.mode = IEEE802154_ADDR_LONG;
 277                 addr.extended_addr = nla_get_hwaddr(
 278                                 info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]);
 279         } else {
 280                 addr.mode = IEEE802154_ADDR_SHORT;
 281                 addr.short_addr = nla_get_shortaddr(
 282                                 info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]);
 283         }
 284         addr.pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
 285
 286         ret = ieee802154_mlme_ops(dev)->disassoc_req(dev, &addr,
 287                         nla_get_u8(info->attrs[IEEE802154_ATTR_REASON]));
 288
 289 out:
 290         dev_put(dev);
 291         return ret;
 292 }
 293
 294 /* PANid, channel, beacon_order = 15, superframe_order = 15,
 295  * PAN_coordinator, battery_life_extension = 0,
 296  * coord_realignment = 0, security_enable = 0
 297 */
 298 int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info)
 299 {
 300         struct net_device *dev;
 301         struct ieee802154_addr addr;
 302
 303         u8 channel, bcn_ord, sf_ord;
 304         u8 page;
 305         int pan_coord, blx, coord_realign;
 306         int ret = -EBUSY;
 307
 308         if (!info->attrs[IEEE802154_ATTR_COORD_PAN_ID] ||
 309             !info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR] ||
 310             !info->attrs[IEEE802154_ATTR_CHANNEL] ||
 311             !info->attrs[IEEE802154_ATTR_BCN_ORD] ||
 312             !info->attrs[IEEE802154_ATTR_SF_ORD] ||
 313             !info->attrs[IEEE802154_ATTR_PAN_COORD] ||
 314             !info->attrs[IEEE802154_ATTR_BAT_EXT] ||
 315             !info->attrs[IEEE802154_ATTR_COORD_REALIGN]
 316          )
 317                 return -EINVAL;
 318
 319         dev = ieee802154_nl_get_dev(info);
 320         if (!dev)
 321                 return -ENODEV;
 322
 323         if (netif_running(dev))
 324                 goto out;
 325
 326         if (!ieee802154_mlme_ops(dev)->start_req) {
 327                 ret = -EOPNOTSUPP;
 328                 goto out;
 329         }
 330
 331         addr.mode = IEEE802154_ADDR_SHORT;
 332         addr.short_addr = nla_get_shortaddr(
 333                         info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]);
 334         addr.pan_id = nla_get_shortaddr(
 335                         info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);
 336
 337         channel = nla_get_u8(info->attrs[IEEE802154_ATTR_CHANNEL]);
 338         bcn_ord = nla_get_u8(info->attrs[IEEE802154_ATTR_BCN_ORD]);
 339         sf_ord = nla_get_u8(info->attrs[IEEE802154_ATTR_SF_ORD]);
 340         pan_coord = nla_get_u8(info->attrs[IEEE802154_ATTR_PAN_COORD]);
 341         blx = nla_get_u8(info->attrs[IEEE802154_ATTR_BAT_EXT]);
 342         coord_realign = nla_get_u8(info->attrs[IEEE802154_ATTR_COORD_REALIGN]);
 343
 344         if (info->attrs[IEEE802154_ATTR_PAGE])
 345                 page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
 346         else
 347                 page = 0;
 348
 349         if (addr.short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST)) {
 350                 ieee802154_nl_start_confirm(dev, IEEE802154_NO_SHORT_ADDRESS);
 351                 dev_put(dev);
 352                 return -EINVAL;
 353         }
 354
 355         rtnl_lock();
 356         ret = ieee802154_mlme_ops(dev)->start_req(dev, &addr, channel, page,
 357                 bcn_ord, sf_ord, pan_coord, blx, coord_realign);
 358         rtnl_unlock();
 359
 360         /* FIXME: add validation for unused parameters to be sane
 361          * for SoftMAC
 362          */
 363         ieee802154_nl_start_confirm(dev, IEEE802154_SUCCESS);
 364
 365 out:
 366         dev_put(dev);
 367         return ret;
 368 }
 369
 370 int ieee802154_scan_req(struct sk_buff *skb, struct genl_info *info)
 371 {
 372         struct net_device *dev;
 373         int ret = -EOPNOTSUPP;
 374         u8 type;
 375         u32 channels;
 376         u8 duration;
 377         u8 page;
 378
 379         if (!info->attrs[IEEE802154_ATTR_SCAN_TYPE] ||
 380             !info->attrs[IEEE802154_ATTR_CHANNELS] ||
 381             !info->attrs[IEEE802154_ATTR_DURATION])
 382                 return -EINVAL;
 383
 384         dev = ieee802154_nl_get_dev(info);
 385         if (!dev)
 386                 return -ENODEV;
 387         if (!ieee802154_mlme_ops(dev)->scan_req)
 388                 goto out;
 389
 390         type = nla_get_u8(info->attrs[IEEE802154_ATTR_SCAN_TYPE]);
 391         channels = nla_get_u32(info->attrs[IEEE802154_ATTR_CHANNELS]);
 392         duration = nla_get_u8(info->attrs[IEEE802154_ATTR_DURATION]);
 393
 394         if (info->attrs[IEEE802154_ATTR_PAGE])
 395                 page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
 396         else
 397                 page = 0;
 398
 399         ret = ieee802154_mlme_ops(dev)->scan_req(dev, type, channels,
 400                                                  page, duration);
 401
 402 out:
 403         dev_put(dev);
 404         return ret;
 405 }
 406
 407 int ieee802154_list_iface(struct sk_buff *skb, struct genl_info *info)
 408 {
 409         /* Request for interface name, index, type, IEEE address,
 410          * PAN Id, short address
 411          */
 412         struct sk_buff *msg;
 413         struct net_device *dev = NULL;
 414         int rc = -ENOBUFS;
 415
 416         pr_debug("%s\n", __func__);
 417
 418         dev = ieee802154_nl_get_dev(info);
 419         if (!dev)
 420                 return -ENODEV;
 421
 422         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 423         if (!msg)
 424                 goto out_dev;
 425
 426         rc = ieee802154_nl_fill_iface(msg, info->snd_portid, info->snd_seq,
 427                                       0, dev);
 428         if (rc < 0)
 429                 goto out_free;
 430
 431         dev_put(dev);
 432
 433         return genlmsg_reply(msg, info);
 434 out_free:
 435         nlmsg_free(msg);
 436 out_dev:
 437         dev_put(dev);
 438         return rc;
 439 }
 440
 441 int ieee802154_dump_iface(struct sk_buff *skb, struct netlink_callback *cb)
 442 {
 443         struct net *net = sock_net(skb->sk);
 444         struct net_device *dev;
 445         int idx;
 446         int s_idx = cb->args[0];
 447
 448         pr_debug("%s\n", __func__);
 449
 450         idx = 0;
 451         for_each_netdev(net, dev) {
 452                 /* Check on mtu is currently a hacked solution because lowpan
 453                  * and wpan have the same ARPHRD type.
 454                  */
 455                 if (idx < s_idx || dev->type != ARPHRD_IEEE802154 ||
 456                     dev->mtu != IEEE802154_MTU)
 457                         goto cont;
 458
 459                 if (ieee802154_nl_fill_iface(skb, NETLINK_CB(cb->skb).portid,
 460                                              cb->nlh->nlmsg_seq,
 461                                              NLM_F_MULTI, dev) < 0)
 462                         break;
 463 cont:
 464                 idx++;
 465         }
 466         cb->args[0] = idx;
 467
 468         return skb->len;
 469 }
 470
 471 int ieee802154_set_macparams(struct sk_buff *skb, struct genl_info *info)
 472 {
 473         struct net_device *dev = NULL;
 474         struct ieee802154_mlme_ops *ops;
 475         struct ieee802154_mac_params params;
 476         struct wpan_phy *phy;
 477         int rc = -EINVAL;
 478
 479         pr_debug("%s\n", __func__);
 480
 481         dev = ieee802154_nl_get_dev(info);
 482         if (!dev)
 483                 return -ENODEV;
 484
 485         ops = ieee802154_mlme_ops(dev);
 486
 487         if (!ops->get_mac_params || !ops->set_mac_params) {
 488                 rc = -EOPNOTSUPP;
 489                 goto out;
 490         }
 491
 492         if (netif_running(dev)) {
 493                 rc = -EBUSY;
 494                 goto out;
 495         }
 496
 497         if (!info->attrs[IEEE802154_ATTR_LBT_ENABLED] &&
 498             !info->attrs[IEEE802154_ATTR_CCA_MODE] &&
 499             !info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL] &&
 500             !info->attrs[IEEE802154_ATTR_CSMA_RETRIES] &&
 501             !info->attrs[IEEE802154_ATTR_CSMA_MIN_BE] &&
 502             !info->attrs[IEEE802154_ATTR_CSMA_MAX_BE] &&
 503             !info->attrs[IEEE802154_ATTR_FRAME_RETRIES])
 504                 goto out;
 505
 506         phy = dev->ieee802154_ptr->wpan_phy;
 507         get_device(&phy->dev);
 508
 509         rtnl_lock();
 510         ops->get_mac_params(dev, &params);
 511
 512         if (info->attrs[IEEE802154_ATTR_TXPOWER])
 513                 params.transmit_power = nla_get_s8(info->attrs[IEEE802154_ATTR_TXPOWER]);
 514
 515         if (info->attrs[IEEE802154_ATTR_LBT_ENABLED])
 516                 params.lbt = nla_get_u8(info->attrs[IEEE802154_ATTR_LBT_ENABLED]);
 517
 518         if (info->attrs[IEEE802154_ATTR_CCA_MODE])
 519                 params.cca.mode = nla_get_u8(info->attrs[IEEE802154_ATTR_CCA_MODE]);
 520
 521         if (info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL])
 522                 params.cca_ed_level = nla_get_s32(info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL]);
 523
 524         if (info->attrs[IEEE802154_ATTR_CSMA_RETRIES])
 525                 params.csma_retries = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_RETRIES]);
 526
 527         if (info->attrs[IEEE802154_ATTR_CSMA_MIN_BE])
 528                 params.min_be = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_MIN_BE]);
 529
 530         if (info->attrs[IEEE802154_ATTR_CSMA_MAX_BE])
 531                 params.max_be = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_MAX_BE]);
 532
 533         if (info->attrs[IEEE802154_ATTR_FRAME_RETRIES])
 534                 params.frame_retries = nla_get_s8(info->attrs[IEEE802154_ATTR_FRAME_RETRIES]);
 535
 536         rc = ops->set_mac_params(dev, &params);
 537         rtnl_unlock();
 538
 539         wpan_phy_put(phy);
 540         dev_put(dev);
 541
 542         return 0;
 543
 544 out:
 545         dev_put(dev);
 546         return rc;
 547 }
 548
 549 static int
 550 ieee802154_llsec_parse_key_id(struct genl_info *info,
 551                               struct ieee802154_llsec_key_id *desc)
 552 {
 553         memset(desc, 0, sizeof(*desc));
 554
 555         if (!info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE])
 556                 return -EINVAL;
 557
 558         desc->mode = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE]);
 559
 560         if (desc->mode == IEEE802154_SCF_KEY_IMPLICIT) {
 561                 if (!info->attrs[IEEE802154_ATTR_PAN_ID] &&
 562                     !(info->attrs[IEEE802154_ATTR_SHORT_ADDR] ||
 563                       info->attrs[IEEE802154_ATTR_HW_ADDR]))
 564                         return -EINVAL;
 565
 566                 desc->device_addr.pan_id = nla_get_shortaddr(info->attrs[IEEE802154_ATTR_PAN_ID]);
 567
 568                 if (info->attrs[IEEE802154_ATTR_SHORT_ADDR]) {
 569                         desc->device_addr.mode = IEEE802154_ADDR_SHORT;
 570                         desc->device_addr.short_addr = nla_get_shortaddr(info->attrs[IEEE802154_ATTR_SHORT_ADDR]);
 571                 } else {
 572                         desc->device_addr.mode = IEEE802154_ADDR_LONG;
 573                         desc->device_addr.extended_addr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]);
 574                 }
 575         }
 576
 577         if (desc->mode != IEEE802154_SCF_KEY_IMPLICIT &&
 578             !info->attrs[IEEE802154_ATTR_LLSEC_KEY_ID])
 579                 return -EINVAL;
 580
 581         if (desc->mode == IEEE802154_SCF_KEY_SHORT_INDEX &&
 582             !info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_SHORT])
 583                 return -EINVAL;
 584
 585         if (desc->mode == IEEE802154_SCF_KEY_HW_INDEX &&
 586             !info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_EXTENDED])
 587                 return -EINVAL;
 588
 589         if (desc->mode != IEEE802154_SCF_KEY_IMPLICIT)
 590                 desc->id = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_KEY_ID]);
 591
 592         switch (desc->mode) {
 593         case IEEE802154_SCF_KEY_SHORT_INDEX:
 594         {
 595                 u32 source = nla_get_u32(info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_SHORT]);
 596
 597                 desc->short_source = cpu_to_le32(source);
 598                 break;
 599         }
 600         case IEEE802154_SCF_KEY_HW_INDEX:
 601                 desc->extended_source = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_EXTENDED]);
 602                 break;
 603         }
 604
 605         return 0;
 606 }
 607
 608 static int
 609 ieee802154_llsec_fill_key_id(struct sk_buff *msg,
 610                              const struct ieee802154_llsec_key_id *desc)
 611 {
 612         if (nla_put_u8(msg, IEEE802154_ATTR_LLSEC_KEY_MODE, desc->mode))
 613                 return -EMSGSIZE;
 614
 615         if (desc->mode == IEEE802154_SCF_KEY_IMPLICIT) {
 616                 if (nla_put_shortaddr(msg, IEEE802154_ATTR_PAN_ID,
 617                                       desc->device_addr.pan_id))
 618                         return -EMSGSIZE;
 619
 620                 if (desc->device_addr.mode == IEEE802154_ADDR_SHORT &&
 621                     nla_put_shortaddr(msg, IEEE802154_ATTR_SHORT_ADDR,
 622                                       desc->device_addr.short_addr))
 623                         return -EMSGSIZE;
 624
 625                 if (desc->device_addr.mode == IEEE802154_ADDR_LONG &&
 626                     nla_put_hwaddr(msg, IEEE802154_ATTR_HW_ADDR,
 627                                    desc->device_addr.extended_addr))
 628                         return -EMSGSIZE;
 629         }
 630
 631         if (desc->mode != IEEE802154_SCF_KEY_IMPLICIT &&
 632             nla_put_u8(msg, IEEE802154_ATTR_LLSEC_KEY_ID, desc->id))
 633                 return -EMSGSIZE;
 634
 635         if (desc->mode == IEEE802154_SCF_KEY_SHORT_INDEX &&
 636             nla_put_u32(msg, IEEE802154_ATTR_LLSEC_KEY_SOURCE_SHORT,
 637                         le32_to_cpu(desc->short_source)))
 638                 return -EMSGSIZE;
 639
 640         if (desc->mode == IEEE802154_SCF_KEY_HW_INDEX &&
 641             nla_put_hwaddr(msg, IEEE802154_ATTR_LLSEC_KEY_SOURCE_EXTENDED,
 642                            desc->extended_source))
 643                 return -EMSGSIZE;
 644
 645         return 0;
 646 }
 647
 648 int ieee802154_llsec_getparams(struct sk_buff *skb, struct genl_info *info)
 649 {
 650         struct sk_buff *msg;
 651         struct net_device *dev = NULL;
 652         int rc = -ENOBUFS;
 653         struct ieee802154_mlme_ops *ops;
 654         void *hdr;
 655         struct ieee802154_llsec_params params;
 656
 657         pr_debug("%s\n", __func__);
 658
 659         dev = ieee802154_nl_get_dev(info);
 660         if (!dev)
 661                 return -ENODEV;
 662
 663         ops = ieee802154_mlme_ops(dev);
 664         if (!ops->llsec) {
 665                 rc = -EOPNOTSUPP;
 666                 goto out_dev;
 667         }
 668
 669         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 670         if (!msg)
 671                 goto out_dev;
 672
 673         hdr = genlmsg_put(msg, 0, info->snd_seq, &nl802154_family, 0,
 674                           IEEE802154_LLSEC_GETPARAMS);
 675         if (!hdr)
 676                 goto out_free;
 677
 678         rc = ops->llsec->get_params(dev, &params);
 679         if (rc < 0)
 680                 goto out_free;
 681
 682         if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
 683             nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
 684             nla_put_u8(msg, IEEE802154_ATTR_LLSEC_ENABLED, params.enabled) ||
 685             nla_put_u8(msg, IEEE802154_ATTR_LLSEC_SECLEVEL, params.out_level) ||
 686             nla_put_u32(msg, IEEE802154_ATTR_LLSEC_FRAME_COUNTER,
 687                         be32_to_cpu(params.frame_counter)) ||
 688             ieee802154_llsec_fill_key_id(msg, &params.out_key))
 689                 goto out_free;
 690
 691         dev_put(dev);
 692
 693         return ieee802154_nl_reply(msg, info);
 694 out_free:
 695         nlmsg_free(msg);
 696 out_dev:
 697         dev_put(dev);
 698         return rc;
 699 }
 700
 701 int ieee802154_llsec_setparams(struct sk_buff *skb, struct genl_info *info)
 702 {
 703         struct net_device *dev = NULL;
 704         int rc = -EINVAL;
 705         struct ieee802154_mlme_ops *ops;
 706         struct ieee802154_llsec_params params;
 707         int changed = 0;
 708
 709         pr_debug("%s\n", __func__);
 710
 711         dev = ieee802154_nl_get_dev(info);
 712         if (!dev)
 713                 return -ENODEV;
 714
 715         if (!info->attrs[IEEE802154_ATTR_LLSEC_ENABLED] &&
 716             !info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE] &&
 717             !info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL])
 718                 goto out;
 719
 720         ops = ieee802154_mlme_ops(dev);
 721         if (!ops->llsec) {
 722                 rc = -EOPNOTSUPP;
 723                 goto out;
 724         }
 725
 726         if (info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL] &&
 727             nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL]) > 7)
 728                 goto out;
 729
 730         if (info->attrs[IEEE802154_ATTR_LLSEC_ENABLED]) {
 731                 params.enabled = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_ENABLED]);
 732                 changed |= IEEE802154_LLSEC_PARAM_ENABLED;
 733         }
 734
 735         if (info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE]) {
 736                 if (ieee802154_llsec_parse_key_id(info, &params.out_key))
 737                         goto out;
 738
 739                 changed |= IEEE802154_LLSEC_PARAM_OUT_KEY;
 740         }
 741
 742         if (info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL]) {
 743                 params.out_level = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL]);
 744                 changed |= IEEE802154_LLSEC_PARAM_OUT_LEVEL;
 745         }
 746
 747         if (info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]) {
 748                 u32 fc = nla_get_u32(info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]);
 749
 750                 params.frame_counter = cpu_to_be32(fc);
 751                 changed |= IEEE802154_LLSEC_PARAM_FRAME_COUNTER;
 752         }
 753
 754         rc = ops->llsec->set_params(dev, &params, changed);
 755
 756         dev_put(dev);
 757
 758         return rc;
 759 out:
 760         dev_put(dev);
 761         return rc;
 762 }
 763
 764 struct llsec_dump_data {
 765         struct sk_buff *skb;
 766         int s_idx, s_idx2;
 767         int portid;
 768         int nlmsg_seq;
 769         struct net_device *dev;
 770         struct ieee802154_mlme_ops *ops;
 771         struct ieee802154_llsec_table *table;
 772 };
 773
 774 static int
 775 ieee802154_llsec_dump_table(struct sk_buff *skb, struct netlink_callback *cb,
 776                             int (*step)(struct llsec_dump_data *))
 777 {
 778         struct net *net = sock_net(skb->sk);
 779         struct net_device *dev;
 780         struct llsec_dump_data data;
 781         int idx = 0;
 782         int first_dev = cb->args[0];
 783         int rc;
 784
 785         for_each_netdev(net, dev) {
 786                 /* Check on mtu is currently a hacked solution because lowpan
 787                  * and wpan have the same ARPHRD type.
 788                  */
 789                 if (idx < first_dev || dev->type != ARPHRD_IEEE802154 ||
 790                     dev->mtu != IEEE802154_MTU)
 791                         goto skip;
 792
 793                 data.ops = ieee802154_mlme_ops(dev);
 794                 if (!data.ops->llsec)
 795                         goto skip;
 796
 797                 data.skb = skb;
 798                 data.s_idx = cb->args[1];
 799                 data.s_idx2 = cb->args[2];
 800                 data.dev = dev;
 801                 data.portid = NETLINK_CB(cb->skb).portid;
 802                 data.nlmsg_seq = cb->nlh->nlmsg_seq;
 803
 804                 data.ops->llsec->lock_table(dev);
 805                 data.ops->llsec->get_table(data.dev, &data.table);
 806                 rc = step(&data);
 807                 data.ops->llsec->unlock_table(dev);
 808
 809                 if (rc < 0)
 810                         break;
 811
 812 skip:
 813                 idx++;
 814         }
 815         cb->args[0] = idx;
 816
 817         return skb->len;
 818 }
 819
 820 static int
 821 ieee802154_nl_llsec_change(struct sk_buff *skb, struct genl_info *info,
 822                            int (*fn)(struct net_device*, struct genl_info*))
 823 {
 824         struct net_device *dev = NULL;
 825         int rc = -EINVAL;
 826
 827         dev = ieee802154_nl_get_dev(info);
 828         if (!dev)
 829                 return -ENODEV;
 830
 831         if (!ieee802154_mlme_ops(dev)->llsec)
 832                 rc = -EOPNOTSUPP;
 833         else
 834                 rc = fn(dev, info);
 835
 836         dev_put(dev);
 837         return rc;
 838 }
 839
 840 static int
 841 ieee802154_llsec_parse_key(struct genl_info *info,
 842                            struct ieee802154_llsec_key *key)
 843 {
 844         u8 frames;
 845         u32 commands[256 / 32];
 846
 847         memset(key, 0, sizeof(*key));
 848
 849         if (!info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_FRAME_TYPES] ||
 850             !info->attrs[IEEE802154_ATTR_LLSEC_KEY_BYTES])
 851                 return -EINVAL;
 852
 853         frames = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_FRAME_TYPES]);
 854         if ((frames & BIT(IEEE802154_FC_TYPE_MAC_CMD)) &&
 855             !info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS])
 856                 return -EINVAL;
 857
 858         if (info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS]) {
 859                 nla_memcpy(commands,
 860                            info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS],
 861                            256 / 8);
 862
 863                 if (commands[0] || commands[1] || commands[2] || commands[3] ||
 864                     commands[4] || commands[5] || commands[6] ||
 865                     commands[7] >= BIT(IEEE802154_CMD_GTS_REQ + 1))
 866                         return -EINVAL;
 867
 868                 key->cmd_frame_ids = commands[7];
 869         }
 870
 871         key->frame_types = frames;
 872
 873         nla_memcpy(key->key, info->attrs[IEEE802154_ATTR_LLSEC_KEY_BYTES],
 874                    IEEE802154_LLSEC_KEY_SIZE);
 875
 876         return 0;
 877 }
 878
 879 static int llsec_add_key(struct net_device *dev, struct genl_info *info)
 880 {
 881         struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
 882         struct ieee802154_llsec_key key;
 883         struct ieee802154_llsec_key_id id;
 884
 885         if (ieee802154_llsec_parse_key(info, &key) ||
 886             ieee802154_llsec_parse_key_id(info, &id))
 887                 return -EINVAL;
 888
 889         return ops->llsec->add_key(dev, &id, &key);
 890 }
 891
 892 int ieee802154_llsec_add_key(struct sk_buff *skb, struct genl_info *info)
 893 {
 894         if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) !=
 895             (NLM_F_CREATE | NLM_F_EXCL))
 896                 return -EINVAL;
 897
 898         return ieee802154_nl_llsec_change(skb, info, llsec_add_key);
 899 }
 900
 901 static int llsec_remove_key(struct net_device *dev, struct genl_info *info)
 902 {
 903         struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
 904         struct ieee802154_llsec_key_id id;
 905
 906         if (ieee802154_llsec_parse_key_id(info, &id))
 907                 return -EINVAL;
 908
 909         return ops->llsec->del_key(dev, &id);
 910 }
 911
 912 int ieee802154_llsec_del_key(struct sk_buff *skb, struct genl_info *info)
 913 {
 914         return ieee802154_nl_llsec_change(skb, info, llsec_remove_key);
 915 }
 916
 917 static int
 918 ieee802154_nl_fill_key(struct sk_buff *msg, u32 portid, u32 seq,
 919                        const struct ieee802154_llsec_key_entry *key,
 920                        const struct net_device *dev)
 921 {
 922         void *hdr;
 923         u32 commands[256 / 32];
 924
 925         hdr = genlmsg_put(msg, 0, seq, &nl802154_family, NLM_F_MULTI,
 926                           IEEE802154_LLSEC_LIST_KEY);
 927         if (!hdr)
 928                 goto out;
 929
 930         if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
 931             nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
 932             ieee802154_llsec_fill_key_id(msg, &key->id) ||
 933             nla_put_u8(msg, IEEE802154_ATTR_LLSEC_KEY_USAGE_FRAME_TYPES,
 934                        key->key->frame_types))
 935                 goto nla_put_failure;
 936
 937         if (key->key->frame_types & BIT(IEEE802154_FC_TYPE_MAC_CMD)) {
 938                 memset(commands, 0, sizeof(commands));
 939                 commands[7] = key->key->cmd_frame_ids;
 940                 if (nla_put(msg, IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS,
 941                             sizeof(commands), commands))
 942                         goto nla_put_failure;
 943         }
 944
 945         if (nla_put(msg, IEEE802154_ATTR_LLSEC_KEY_BYTES,
 946                     IEEE802154_LLSEC_KEY_SIZE, key->key->key))
 947                 goto nla_put_failure;
 948
 949         genlmsg_end(msg, hdr);
 950         return 0;
 951
 952 nla_put_failure:
 953         genlmsg_cancel(msg, hdr);
 954 out:
 955         return -EMSGSIZE;
 956 }
 957
 958 static int llsec_iter_keys(struct llsec_dump_data *data)
 959 {
 960         struct ieee802154_llsec_key_entry *pos;
 961         int rc = 0, idx = 0;
 962
 963         list_for_each_entry(pos, &data->table->keys, list) {
 964                 if (idx++ < data->s_idx)
 965                         continue;
 966
 967                 if (ieee802154_nl_fill_key(data->skb, data->portid,
 968                                            data->nlmsg_seq, pos, data->dev)) {
 969                         rc = -EMSGSIZE;
 970                         break;
 971                 }
 972
 973                 data->s_idx++;
 974         }
 975
 976         return rc;
 977 }
 978
 979 int ieee802154_llsec_dump_keys(struct sk_buff *skb, struct netlink_callback *cb)
 980 {
 981         return ieee802154_llsec_dump_table(skb, cb, llsec_iter_keys);
 982 }
 983
 984 static int
 985 llsec_parse_dev(struct genl_info *info,
 986                 struct ieee802154_llsec_device *dev)
 987 {
 988         memset(dev, 0, sizeof(*dev));
 989
 990         if (!info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER] ||
 991             !info->attrs[IEEE802154_ATTR_HW_ADDR] ||
 992             !info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE] ||
 993             !info->attrs[IEEE802154_ATTR_LLSEC_DEV_KEY_MODE] ||
 994             (!!info->attrs[IEEE802154_ATTR_PAN_ID] !=
 995              !!info->attrs[IEEE802154_ATTR_SHORT_ADDR]))
 996                 return -EINVAL;
 997
 998         if (info->attrs[IEEE802154_ATTR_PAN_ID]) {
 999                 dev->pan_id = nla_get_shortaddr(info->attrs[IEEE802154_ATTR_PAN_ID]);
1000                 dev->short_addr = nla_get_shortaddr(info->attrs[IEEE802154_ATTR_SHORT_ADDR]);
1001         } else {
1002                 dev->short_addr = cpu_to_le16(IEEE802154_ADDR_UNDEF);
1003         }
1004
1005         dev->hwaddr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]);
1006         dev->frame_counter = nla_get_u32(info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]);
1007         dev->seclevel_exempt = !!nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE]);
1008         dev->key_mode = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_DEV_KEY_MODE]);
1009
1010         if (dev->key_mode >= __IEEE802154_LLSEC_DEVKEY_MAX)
1011                 return -EINVAL;
1012
1013         return 0;
1014 }
1015
1016 static int llsec_add_dev(struct net_device *dev, struct genl_info *info)
1017 {
1018         struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
1019         struct ieee802154_llsec_device desc;
1020
1021         if (llsec_parse_dev(info, &desc))
1022                 return -EINVAL;
1023
1024         return ops->llsec->add_dev(dev, &desc);
1025 }
1026
1027 int ieee802154_llsec_add_dev(struct sk_buff *skb, struct genl_info *info)
1028 {
1029         if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) !=
1030             (NLM_F_CREATE | NLM_F_EXCL))
1031                 return -EINVAL;
1032
1033         return ieee802154_nl_llsec_change(skb, info, llsec_add_dev);
1034 }
1035
1036 static int llsec_del_dev(struct net_device *dev, struct genl_info *info)
1037 {
1038         struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
1039         __le64 devaddr;
1040
1041         if (!info->attrs[IEEE802154_ATTR_HW_ADDR])
1042                 return -EINVAL;
1043
1044         devaddr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]);
1045
1046         return ops->llsec->del_dev(dev, devaddr);
1047 }
1048
1049 int ieee802154_llsec_del_dev(struct sk_buff *skb, struct genl_info *info)
1050 {
1051         return ieee802154_nl_llsec_change(skb, info, llsec_del_dev);
1052 }
1053
1054 static int
1055 ieee802154_nl_fill_dev(struct sk_buff *msg, u32 portid, u32 seq,
1056                        const struct ieee802154_llsec_device *desc,
1057                        const struct net_device *dev)
1058 {
1059         void *hdr;
1060
1061         hdr = genlmsg_put(msg, 0, seq, &nl802154_family, NLM_F_MULTI,
1062                           IEEE802154_LLSEC_LIST_DEV);
1063         if (!hdr)
1064                 goto out;
1065
1066         if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
1067             nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
1068             nla_put_shortaddr(msg, IEEE802154_ATTR_PAN_ID, desc->pan_id) ||
1069             nla_put_shortaddr(msg, IEEE802154_ATTR_SHORT_ADDR,
1070                               desc->short_addr) ||
1071             nla_put_hwaddr(msg, IEEE802154_ATTR_HW_ADDR, desc->hwaddr) ||
1072             nla_put_u32(msg, IEEE802154_ATTR_LLSEC_FRAME_COUNTER,
1073                         desc->frame_counter) ||
1074             nla_put_u8(msg, IEEE802154_ATTR_LLSEC_DEV_OVERRIDE,
1075                        desc->seclevel_exempt) ||
1076             nla_put_u8(msg, IEEE802154_ATTR_LLSEC_DEV_KEY_MODE, desc->key_mode))
1077                 goto nla_put_failure;
1078
1079         genlmsg_end(msg, hdr);
1080         return 0;
1081
1082 nla_put_failure:
1083         genlmsg_cancel(msg, hdr);
1084 out:
1085         return -EMSGSIZE;
1086 }
1087
1088 static int llsec_iter_devs(struct llsec_dump_data *data)
1089 {
1090         struct ieee802154_llsec_device *pos;
1091         int rc = 0, idx = 0;
1092
1093         list_for_each_entry(pos, &data->table->devices, list) {
1094                 if (idx++ < data->s_idx)
1095                         continue;
1096
1097                 if (ieee802154_nl_fill_dev(data->skb, data->portid,
1098                                            data->nlmsg_seq, pos, data->dev)) {
1099                         rc = -EMSGSIZE;
1100                         break;
1101                 }
1102
1103                 data->s_idx++;
1104         }
1105
1106         return rc;
1107 }
1108
1109 int ieee802154_llsec_dump_devs(struct sk_buff *skb, struct netlink_callback *cb)
1110 {
1111         return ieee802154_llsec_dump_table(skb, cb, llsec_iter_devs);
1112 }
1113
1114 static int llsec_add_devkey(struct net_device *dev, struct genl_info *info)
1115 {
1116         struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
1117         struct ieee802154_llsec_device_key key;
1118         __le64 devaddr;
1119
1120         if (!info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER] ||
1121             !info->attrs[IEEE802154_ATTR_HW_ADDR] ||
1122             ieee802154_llsec_parse_key_id(info, &key.key_id))
1123                 return -EINVAL;
1124
1125         devaddr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]);
1126         key.frame_counter = nla_get_u32(info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]);
1127
1128         return ops->llsec->add_devkey(dev, devaddr, &key);
1129 }
1130
1131 int ieee802154_llsec_add_devkey(struct sk_buff *skb, struct genl_info *info)
1132 {
1133         if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) !=
1134             (NLM_F_CREATE | NLM_F_EXCL))
1135                 return -EINVAL;
1136
1137         return ieee802154_nl_llsec_change(skb, info, llsec_add_devkey);
1138 }
1139
1140 static int llsec_del_devkey(struct net_device *dev, struct genl_info *info)
1141 {
1142         struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
1143         struct ieee802154_llsec_device_key key;
1144         __le64 devaddr;
1145
1146         if (!info->attrs[IEEE802154_ATTR_HW_ADDR] ||
1147             ieee802154_llsec_parse_key_id(info, &key.key_id))
1148                 return -EINVAL;
1149
1150         devaddr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]);
1151
1152         return ops->llsec->del_devkey(dev, devaddr, &key);
1153 }
1154
1155 int ieee802154_llsec_del_devkey(struct sk_buff *skb, struct genl_info *info)
1156 {
1157         return ieee802154_nl_llsec_change(skb, info, llsec_del_devkey);
1158 }
1159
1160 static int
1161 ieee802154_nl_fill_devkey(struct sk_buff *msg, u32 portid, u32 seq,
1162                           __le64 devaddr,
1163                           const struct ieee802154_llsec_device_key *devkey,
1164                           const struct net_device *dev)
1165 {
1166         void *hdr;
1167
1168         hdr = genlmsg_put(msg, 0, seq, &nl802154_family, NLM_F_MULTI,
1169                           IEEE802154_LLSEC_LIST_DEVKEY);
1170         if (!hdr)
1171                 goto out;
1172
1173         if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
1174             nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
1175             nla_put_hwaddr(msg, IEEE802154_ATTR_HW_ADDR, devaddr) ||
1176             nla_put_u32(msg, IEEE802154_ATTR_LLSEC_FRAME_COUNTER,
1177                         devkey->frame_counter) ||
1178             ieee802154_llsec_fill_key_id(msg, &devkey->key_id))
1179                 goto nla_put_failure;
1180
1181         genlmsg_end(msg, hdr);
1182         return 0;
1183
1184 nla_put_failure:
1185         genlmsg_cancel(msg, hdr);
1186 out:
1187         return -EMSGSIZE;
1188 }
1189
1190 static int llsec_iter_devkeys(struct llsec_dump_data *data)
1191 {
1192         struct ieee802154_llsec_device *dpos;
1193         struct ieee802154_llsec_device_key *kpos;
1194         int rc = 0, idx = 0, idx2;
1195
1196         list_for_each_entry(dpos, &data->table->devices, list) {
1197                 if (idx++ < data->s_idx)
1198                         continue;
1199
1200                 idx2 = 0;
1201
1202                 list_for_each_entry(kpos, &dpos->keys, list) {
1203                         if (idx2++ < data->s_idx2)
1204                                 continue;
1205
1206                         if (ieee802154_nl_fill_devkey(data->skb, data->portid,
1207                                                       data->nlmsg_seq,
1208                                                       dpos->hwaddr, kpos,
1209                                                       data->dev)) {
1210                                 return rc = -EMSGSIZE;
1211                         }
1212
1213                         data->s_idx2++;
1214                 }
1215
1216                 data->s_idx++;
1217         }
1218
1219         return rc;
1220 }
1221
1222 int ieee802154_llsec_dump_devkeys(struct sk_buff *skb,
1223                                   struct netlink_callback *cb)
1224 {
1225         return ieee802154_llsec_dump_table(skb, cb, llsec_iter_devkeys);
1226 }
1227
1228 static int
1229 llsec_parse_seclevel(struct genl_info *info,
1230                      struct ieee802154_llsec_seclevel *sl)
1231 {
1232         memset(sl, 0, sizeof(*sl));
1233
1234         if (!info->attrs[IEEE802154_ATTR_LLSEC_FRAME_TYPE] ||
1235             !info->attrs[IEEE802154_ATTR_LLSEC_SECLEVELS] ||
1236             !info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE])
1237                 return -EINVAL;
1238
1239         sl->frame_type = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_FRAME_TYPE]);
1240         if (sl->frame_type == IEEE802154_FC_TYPE_MAC_CMD) {
1241                 if (!info->attrs[IEEE802154_ATTR_LLSEC_CMD_FRAME_ID])
1242                         return -EINVAL;
1243
1244                 sl->cmd_frame_id = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_CMD_FRAME_ID]);
1245         }
1246
1247         sl->sec_levels = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_SECLEVELS]);
1248         sl->device_override = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE]);
1249
1250         return 0;
1251 }
1252
1253 static int llsec_add_seclevel(struct net_device *dev, struct genl_info *info)
1254 {
1255         struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
1256         struct ieee802154_llsec_seclevel sl;
1257
1258         if (llsec_parse_seclevel(info, &sl))
1259                 return -EINVAL;
1260
1261         return ops->llsec->add_seclevel(dev, &sl);
1262 }
1263
1264 int ieee802154_llsec_add_seclevel(struct sk_buff *skb, struct genl_info *info)
1265 {
1266         if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) !=
1267             (NLM_F_CREATE | NLM_F_EXCL))
1268                 return -EINVAL;
1269
1270         return ieee802154_nl_llsec_change(skb, info, llsec_add_seclevel);
1271 }
1272
1273 static int llsec_del_seclevel(struct net_device *dev, struct genl_info *info)
1274 {
1275         struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
1276         struct ieee802154_llsec_seclevel sl;
1277
1278         if (llsec_parse_seclevel(info, &sl))
1279                 return -EINVAL;
1280
1281         return ops->llsec->del_seclevel(dev, &sl);
1282 }
1283
1284 int ieee802154_llsec_del_seclevel(struct sk_buff *skb, struct genl_info *info)
1285 {
1286         return ieee802154_nl_llsec_change(skb, info, llsec_del_seclevel);
1287 }
1288
1289 static int
1290 ieee802154_nl_fill_seclevel(struct sk_buff *msg, u32 portid, u32 seq,
1291                             const struct ieee802154_llsec_seclevel *sl,
1292                             const struct net_device *dev)
1293 {
1294         void *hdr;
1295
1296         hdr = genlmsg_put(msg, 0, seq, &nl802154_family, NLM_F_MULTI,
1297                           IEEE802154_LLSEC_LIST_SECLEVEL);
1298         if (!hdr)
1299                 goto out;
1300
1301         if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
1302             nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
1303             nla_put_u8(msg, IEEE802154_ATTR_LLSEC_FRAME_TYPE, sl->frame_type) ||
1304             nla_put_u8(msg, IEEE802154_ATTR_LLSEC_SECLEVELS, sl->sec_levels) ||
1305             nla_put_u8(msg, IEEE802154_ATTR_LLSEC_DEV_OVERRIDE,
1306                        sl->device_override))
1307                 goto nla_put_failure;
1308
1309         if (sl->frame_type == IEEE802154_FC_TYPE_MAC_CMD &&
1310             nla_put_u8(msg, IEEE802154_ATTR_LLSEC_CMD_FRAME_ID,
1311                        sl->cmd_frame_id))
1312                 goto nla_put_failure;
1313
1314         genlmsg_end(msg, hdr);
1315         return 0;
1316
1317 nla_put_failure:
1318         genlmsg_cancel(msg, hdr);
1319 out:
1320         return -EMSGSIZE;
1321 }
1322
1323 static int llsec_iter_seclevels(struct llsec_dump_data *data)
1324 {
1325         struct ieee802154_llsec_seclevel *pos;
1326         int rc = 0, idx = 0;
1327
1328         list_for_each_entry(pos, &data->table->security_levels, list) {
1329                 if (idx++ < data->s_idx)
1330                         continue;
1331
1332                 if (ieee802154_nl_fill_seclevel(data->skb, data->portid,
1333                                                 data->nlmsg_seq, pos,
1334                                                 data->dev)) {
1335                         rc = -EMSGSIZE;
1336                         break;
1337                 }
1338
1339                 data->s_idx++;
1340         }
1341
1342         return rc;
1343 }
1344
1345 int ieee802154_llsec_dump_seclevels(struct sk_buff *skb,
1346                                     struct netlink_callback *cb)
1347 {
1348         return ieee802154_llsec_dump_table(skb, cb, llsec_iter_seclevels);
1349 }