net/ieee802154/nl-mac.c

   1 /*
   2  * Netlink inteface 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  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Written by:
  20  * Sergey Lapin <slapin@ossfans.org>
  21  * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
  22  * Maxim Osipov <maxim.osipov@siemens.com>
  23  */
  24
  25 #include <linux/gfp.h>
  26 #include <linux/kernel.h>
  27 #include <linux/if_arp.h>
  28 #include <linux/netdevice.h>
  29 #include <net/netlink.h>
  30 #include <net/genetlink.h>
  31 #include <net/sock.h>
  32 #include <linux/nl802154.h>
  33 #include <linux/export.h>
  34 #include <net/af_ieee802154.h>
  35 #include <net/nl802154.h>
  36 #include <net/ieee802154.h>
  37 #include <net/ieee802154_netdev.h>
  38 #include <net/wpan-phy.h>
  39
  40 #include "ieee802154.h"
  41
  42 static int nla_put_hwaddr(struct sk_buff *msg, int type, __le64 hwaddr)
  43 {
  44         return nla_put_u64(msg, type, swab64((__force u64)hwaddr));
  45 }
  46
  47 static __le64 nla_get_hwaddr(const struct nlattr *nla)
  48 {
  49         return ieee802154_devaddr_from_raw(nla_data(nla));
  50 }
  51
  52 static int nla_put_shortaddr(struct sk_buff *msg, int type, __le16 addr)
  53 {
  54         return nla_put_u16(msg, type, le16_to_cpu(addr));
  55 }
  56
  57 static __le16 nla_get_shortaddr(const struct nlattr *nla)
  58 {
  59         return cpu_to_le16(nla_get_u16(nla));
  60 }
  61
  62 int ieee802154_nl_assoc_indic(struct net_device *dev,
  63                 struct ieee802154_addr *addr, u8 cap)
  64 {
  65         struct sk_buff *msg;
  66
  67         pr_debug("%s\n", __func__);
  68
  69         if (addr->mode != IEEE802154_ADDR_LONG) {
  70                 pr_err("%s: received non-long source address!\n", __func__);
  71                 return -EINVAL;
  72         }
  73
  74         msg = ieee802154_nl_create(0, IEEE802154_ASSOCIATE_INDIC);
  75         if (!msg)
  76                 return -ENOBUFS;
  77
  78         if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
  79             nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
  80             nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
  81                     dev->dev_addr) ||
  82             nla_put_hwaddr(msg, IEEE802154_ATTR_SRC_HW_ADDR,
  83                            addr->extended_addr) ||
  84             nla_put_u8(msg, IEEE802154_ATTR_CAPABILITY, cap))
  85                 goto nla_put_failure;
  86
  87         return ieee802154_nl_mcast(msg, IEEE802154_COORD_MCGRP);
  88
  89 nla_put_failure:
  90         nlmsg_free(msg);
  91         return -ENOBUFS;
  92 }
  93 EXPORT_SYMBOL(ieee802154_nl_assoc_indic);
  94
  95 int ieee802154_nl_assoc_confirm(struct net_device *dev, __le16 short_addr,
  96                 u8 status)
  97 {
  98         struct sk_buff *msg;
  99
 100         pr_debug("%s\n", __func__);
 101
 102         msg = ieee802154_nl_create(0, IEEE802154_ASSOCIATE_CONF);
 103         if (!msg)
 104                 return -ENOBUFS;
 105
 106         if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
 107             nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
 108             nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
 109                     dev->dev_addr) ||
 110             nla_put_shortaddr(msg, IEEE802154_ATTR_SHORT_ADDR, short_addr) ||
 111             nla_put_u8(msg, IEEE802154_ATTR_STATUS, status))
 112                 goto nla_put_failure;
 113         return ieee802154_nl_mcast(msg, IEEE802154_COORD_MCGRP);
 114
 115 nla_put_failure:
 116         nlmsg_free(msg);
 117         return -ENOBUFS;
 118 }
 119 EXPORT_SYMBOL(ieee802154_nl_assoc_confirm);
 120
 121 int ieee802154_nl_disassoc_indic(struct net_device *dev,
 122                 struct ieee802154_addr *addr, u8 reason)
 123 {
 124         struct sk_buff *msg;
 125
 126         pr_debug("%s\n", __func__);
 127
 128         msg = ieee802154_nl_create(0, IEEE802154_DISASSOCIATE_INDIC);
 129         if (!msg)
 130                 return -ENOBUFS;
 131
 132         if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
 133             nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
 134             nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
 135                     dev->dev_addr))
 136                 goto nla_put_failure;
 137         if (addr->mode == IEEE802154_ADDR_LONG) {
 138                 if (nla_put_hwaddr(msg, IEEE802154_ATTR_SRC_HW_ADDR,
 139                                    addr->extended_addr))
 140                         goto nla_put_failure;
 141         } else {
 142                 if (nla_put_shortaddr(msg, IEEE802154_ATTR_SRC_SHORT_ADDR,
 143                                       addr->short_addr))
 144                         goto nla_put_failure;
 145         }
 146         if (nla_put_u8(msg, IEEE802154_ATTR_REASON, reason))
 147                 goto nla_put_failure;
 148         return ieee802154_nl_mcast(msg, IEEE802154_COORD_MCGRP);
 149
 150 nla_put_failure:
 151         nlmsg_free(msg);
 152         return -ENOBUFS;
 153 }
 154 EXPORT_SYMBOL(ieee802154_nl_disassoc_indic);
 155
 156 int ieee802154_nl_disassoc_confirm(struct net_device *dev, u8 status)
 157 {
 158         struct sk_buff *msg;
 159
 160         pr_debug("%s\n", __func__);
 161
 162         msg = ieee802154_nl_create(0, IEEE802154_DISASSOCIATE_CONF);
 163         if (!msg)
 164                 return -ENOBUFS;
 165
 166         if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
 167             nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
 168             nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
 169                     dev->dev_addr) ||
 170             nla_put_u8(msg, IEEE802154_ATTR_STATUS, status))
 171                 goto nla_put_failure;
 172         return ieee802154_nl_mcast(msg, IEEE802154_COORD_MCGRP);
 173
 174 nla_put_failure:
 175         nlmsg_free(msg);
 176         return -ENOBUFS;
 177 }
 178 EXPORT_SYMBOL(ieee802154_nl_disassoc_confirm);
 179
 180 int ieee802154_nl_beacon_indic(struct net_device *dev, __le16 panid,
 181                                __le16 coord_addr)
 182 {
 183         struct sk_buff *msg;
 184
 185         pr_debug("%s\n", __func__);
 186
 187         msg = ieee802154_nl_create(0, IEEE802154_BEACON_NOTIFY_INDIC);
 188         if (!msg)
 189                 return -ENOBUFS;
 190
 191         if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
 192             nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
 193             nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
 194                     dev->dev_addr) ||
 195             nla_put_shortaddr(msg, IEEE802154_ATTR_COORD_SHORT_ADDR,
 196                               coord_addr) ||
 197             nla_put_shortaddr(msg, IEEE802154_ATTR_COORD_PAN_ID, panid))
 198                 goto nla_put_failure;
 199         return ieee802154_nl_mcast(msg, IEEE802154_COORD_MCGRP);
 200
 201 nla_put_failure:
 202         nlmsg_free(msg);
 203         return -ENOBUFS;
 204 }
 205 EXPORT_SYMBOL(ieee802154_nl_beacon_indic);
 206
 207 int ieee802154_nl_scan_confirm(struct net_device *dev,
 208                 u8 status, u8 scan_type, u32 unscanned, u8 page,
 209                 u8 *edl/* , struct list_head *pan_desc_list */)
 210 {
 211         struct sk_buff *msg;
 212
 213         pr_debug("%s\n", __func__);
 214
 215         msg = ieee802154_nl_create(0, IEEE802154_SCAN_CONF);
 216         if (!msg)
 217                 return -ENOBUFS;
 218
 219         if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
 220             nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
 221             nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
 222                     dev->dev_addr) ||
 223             nla_put_u8(msg, IEEE802154_ATTR_STATUS, status) ||
 224             nla_put_u8(msg, IEEE802154_ATTR_SCAN_TYPE, scan_type) ||
 225             nla_put_u32(msg, IEEE802154_ATTR_CHANNELS, unscanned) ||
 226             nla_put_u8(msg, IEEE802154_ATTR_PAGE, page) ||
 227             (edl &&
 228              nla_put(msg, IEEE802154_ATTR_ED_LIST, 27, edl)))
 229                 goto nla_put_failure;
 230         return ieee802154_nl_mcast(msg, IEEE802154_COORD_MCGRP);
 231
 232 nla_put_failure:
 233         nlmsg_free(msg);
 234         return -ENOBUFS;
 235 }
 236 EXPORT_SYMBOL(ieee802154_nl_scan_confirm);
 237
 238 int ieee802154_nl_start_confirm(struct net_device *dev, u8 status)
 239 {
 240         struct sk_buff *msg;
 241
 242         pr_debug("%s\n", __func__);
 243
 244         msg = ieee802154_nl_create(0, IEEE802154_START_CONF);
 245         if (!msg)
 246                 return -ENOBUFS;
 247
 248         if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
 249             nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
 250             nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
 251                     dev->dev_addr) ||
 252             nla_put_u8(msg, IEEE802154_ATTR_STATUS, status))
 253                 goto nla_put_failure;
 254         return ieee802154_nl_mcast(msg, IEEE802154_COORD_MCGRP);
 255
 256 nla_put_failure:
 257         nlmsg_free(msg);
 258         return -ENOBUFS;
 259 }
 260 EXPORT_SYMBOL(ieee802154_nl_start_confirm);
 261
 262 static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 portid,
 263         u32 seq, int flags, struct net_device *dev)
 264 {
 265         void *hdr;
 266         struct wpan_phy *phy;
 267         struct ieee802154_mlme_ops *ops;
 268         __le16 short_addr, pan_id;
 269
 270         pr_debug("%s\n", __func__);
 271
 272         hdr = genlmsg_put(msg, 0, seq, &nl802154_family, flags,
 273                 IEEE802154_LIST_IFACE);
 274         if (!hdr)
 275                 goto out;
 276
 277         ops = ieee802154_mlme_ops(dev);
 278         phy = ops->get_phy(dev);
 279         BUG_ON(!phy);
 280
 281         short_addr = ops->get_short_addr(dev);
 282         pan_id = ops->get_pan_id(dev);
 283
 284         if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
 285             nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
 286             nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
 287             nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
 288                     dev->dev_addr) ||
 289             nla_put_shortaddr(msg, IEEE802154_ATTR_SHORT_ADDR, short_addr) ||
 290             nla_put_shortaddr(msg, IEEE802154_ATTR_PAN_ID, pan_id))
 291                 goto nla_put_failure;
 292
 293         if (ops->get_mac_params) {
 294                 struct ieee802154_mac_params params;
 295
 296                 ops->get_mac_params(dev, &params);
 297
 298                 if (nla_put_s8(msg, IEEE802154_ATTR_TXPOWER,
 299                                params.transmit_power) ||
 300                     nla_put_u8(msg, IEEE802154_ATTR_LBT_ENABLED, params.lbt) ||
 301                     nla_put_u8(msg, IEEE802154_ATTR_CCA_MODE,
 302                                params.cca_mode) ||
 303                     nla_put_s32(msg, IEEE802154_ATTR_CCA_ED_LEVEL,
 304                                 params.cca_ed_level) ||
 305                     nla_put_u8(msg, IEEE802154_ATTR_CSMA_RETRIES,
 306                                params.csma_retries) ||
 307                     nla_put_u8(msg, IEEE802154_ATTR_CSMA_MIN_BE,
 308                                params.min_be) ||
 309                     nla_put_u8(msg, IEEE802154_ATTR_CSMA_MAX_BE,
 310                                params.max_be) ||
 311                     nla_put_s8(msg, IEEE802154_ATTR_FRAME_RETRIES,
 312                                params.frame_retries))
 313                         goto nla_put_failure;
 314         }
 315
 316         wpan_phy_put(phy);
 317         return genlmsg_end(msg, hdr);
 318
 319 nla_put_failure:
 320         wpan_phy_put(phy);
 321         genlmsg_cancel(msg, hdr);
 322 out:
 323         return -EMSGSIZE;
 324 }
 325
 326 /* Requests from userspace */
 327 static struct net_device *ieee802154_nl_get_dev(struct genl_info *info)
 328 {
 329         struct net_device *dev;
 330
 331         if (info->attrs[IEEE802154_ATTR_DEV_NAME]) {
 332                 char name[IFNAMSIZ + 1];
 333                 nla_strlcpy(name, info->attrs[IEEE802154_ATTR_DEV_NAME],
 334                                 sizeof(name));
 335                 dev = dev_get_by_name(&init_net, name);
 336         } else if (info->attrs[IEEE802154_ATTR_DEV_INDEX])
 337                 dev = dev_get_by_index(&init_net,
 338                         nla_get_u32(info->attrs[IEEE802154_ATTR_DEV_INDEX]));
 339         else
 340                 return NULL;
 341
 342         if (!dev)
 343                 return NULL;
 344
 345         if (dev->type != ARPHRD_IEEE802154) {
 346                 dev_put(dev);
 347                 return NULL;
 348         }
 349
 350         return dev;
 351 }
 352
 353 int ieee802154_associate_req(struct sk_buff *skb, struct genl_info *info)
 354 {
 355         struct net_device *dev;
 356         struct ieee802154_addr addr;
 357         u8 page;
 358         int ret = -EOPNOTSUPP;
 359
 360         if (!info->attrs[IEEE802154_ATTR_CHANNEL] ||
 361             !info->attrs[IEEE802154_ATTR_COORD_PAN_ID] ||
 362             (!info->attrs[IEEE802154_ATTR_COORD_HW_ADDR] &&
 363                 !info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]) ||
 364             !info->attrs[IEEE802154_ATTR_CAPABILITY])
 365                 return -EINVAL;
 366
 367         dev = ieee802154_nl_get_dev(info);
 368         if (!dev)
 369                 return -ENODEV;
 370         if (!ieee802154_mlme_ops(dev)->assoc_req)
 371                 goto out;
 372
 373         if (info->attrs[IEEE802154_ATTR_COORD_HW_ADDR]) {
 374                 addr.mode = IEEE802154_ADDR_LONG;
 375                 addr.extended_addr = nla_get_hwaddr(
 376                                 info->attrs[IEEE802154_ATTR_COORD_HW_ADDR]);
 377         } else {
 378                 addr.mode = IEEE802154_ADDR_SHORT;
 379                 addr.short_addr = nla_get_shortaddr(
 380                                 info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]);
 381         }
 382         addr.pan_id = nla_get_shortaddr(
 383                         info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);
 384
 385         if (info->attrs[IEEE802154_ATTR_PAGE])
 386                 page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
 387         else
 388                 page = 0;
 389
 390         ret = ieee802154_mlme_ops(dev)->assoc_req(dev, &addr,
 391                         nla_get_u8(info->attrs[IEEE802154_ATTR_CHANNEL]),
 392                         page,
 393                         nla_get_u8(info->attrs[IEEE802154_ATTR_CAPABILITY]));
 394
 395 out:
 396         dev_put(dev);
 397         return ret;
 398 }
 399
 400 int ieee802154_associate_resp(struct sk_buff *skb, struct genl_info *info)
 401 {
 402         struct net_device *dev;
 403         struct ieee802154_addr addr;
 404         int ret = -EOPNOTSUPP;
 405
 406         if (!info->attrs[IEEE802154_ATTR_STATUS] ||
 407             !info->attrs[IEEE802154_ATTR_DEST_HW_ADDR] ||
 408             !info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR])
 409                 return -EINVAL;
 410
 411         dev = ieee802154_nl_get_dev(info);
 412         if (!dev)
 413                 return -ENODEV;
 414         if (!ieee802154_mlme_ops(dev)->assoc_resp)
 415                 goto out;
 416
 417         addr.mode = IEEE802154_ADDR_LONG;
 418         addr.extended_addr = nla_get_hwaddr(
 419                         info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]);
 420         addr.pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
 421
 422         ret = ieee802154_mlme_ops(dev)->assoc_resp(dev, &addr,
 423                 nla_get_shortaddr(info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]),
 424                 nla_get_u8(info->attrs[IEEE802154_ATTR_STATUS]));
 425
 426 out:
 427         dev_put(dev);
 428         return ret;
 429 }
 430
 431 int ieee802154_disassociate_req(struct sk_buff *skb, struct genl_info *info)
 432 {
 433         struct net_device *dev;
 434         struct ieee802154_addr addr;
 435         int ret = -EOPNOTSUPP;
 436
 437         if ((!info->attrs[IEEE802154_ATTR_DEST_HW_ADDR] &&
 438                 !info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]) ||
 439             !info->attrs[IEEE802154_ATTR_REASON])
 440                 return -EINVAL;
 441
 442         dev = ieee802154_nl_get_dev(info);
 443         if (!dev)
 444                 return -ENODEV;
 445         if (!ieee802154_mlme_ops(dev)->disassoc_req)
 446                 goto out;
 447
 448         if (info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]) {
 449                 addr.mode = IEEE802154_ADDR_LONG;
 450                 addr.extended_addr = nla_get_hwaddr(
 451                                 info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]);
 452         } else {
 453                 addr.mode = IEEE802154_ADDR_SHORT;
 454                 addr.short_addr = nla_get_shortaddr(
 455                                 info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]);
 456         }
 457         addr.pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
 458
 459         ret = ieee802154_mlme_ops(dev)->disassoc_req(dev, &addr,
 460                         nla_get_u8(info->attrs[IEEE802154_ATTR_REASON]));
 461
 462 out:
 463         dev_put(dev);
 464         return ret;
 465 }
 466
 467 /*
 468  * PANid, channel, beacon_order = 15, superframe_order = 15,
 469  * PAN_coordinator, battery_life_extension = 0,
 470  * coord_realignment = 0, security_enable = 0
 471 */
 472 int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info)
 473 {
 474         struct net_device *dev;
 475         struct ieee802154_addr addr;
 476
 477         u8 channel, bcn_ord, sf_ord;
 478         u8 page;
 479         int pan_coord, blx, coord_realign;
 480         int ret = -EOPNOTSUPP;
 481
 482         if (!info->attrs[IEEE802154_ATTR_COORD_PAN_ID] ||
 483             !info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR] ||
 484             !info->attrs[IEEE802154_ATTR_CHANNEL] ||
 485             !info->attrs[IEEE802154_ATTR_BCN_ORD] ||
 486             !info->attrs[IEEE802154_ATTR_SF_ORD] ||
 487             !info->attrs[IEEE802154_ATTR_PAN_COORD] ||
 488             !info->attrs[IEEE802154_ATTR_BAT_EXT] ||
 489             !info->attrs[IEEE802154_ATTR_COORD_REALIGN]
 490          )
 491                 return -EINVAL;
 492
 493         dev = ieee802154_nl_get_dev(info);
 494         if (!dev)
 495                 return -ENODEV;
 496         if (!ieee802154_mlme_ops(dev)->start_req)
 497                 goto out;
 498
 499         addr.mode = IEEE802154_ADDR_SHORT;
 500         addr.short_addr = nla_get_shortaddr(
 501                         info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]);
 502         addr.pan_id = nla_get_shortaddr(
 503                         info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);
 504
 505         channel = nla_get_u8(info->attrs[IEEE802154_ATTR_CHANNEL]);
 506         bcn_ord = nla_get_u8(info->attrs[IEEE802154_ATTR_BCN_ORD]);
 507         sf_ord = nla_get_u8(info->attrs[IEEE802154_ATTR_SF_ORD]);
 508         pan_coord = nla_get_u8(info->attrs[IEEE802154_ATTR_PAN_COORD]);
 509         blx = nla_get_u8(info->attrs[IEEE802154_ATTR_BAT_EXT]);
 510         coord_realign = nla_get_u8(info->attrs[IEEE802154_ATTR_COORD_REALIGN]);
 511
 512         if (info->attrs[IEEE802154_ATTR_PAGE])
 513                 page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
 514         else
 515                 page = 0;
 516
 517
 518         if (addr.short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST)) {
 519                 ieee802154_nl_start_confirm(dev, IEEE802154_NO_SHORT_ADDRESS);
 520                 dev_put(dev);
 521                 return -EINVAL;
 522         }
 523
 524         ret = ieee802154_mlme_ops(dev)->start_req(dev, &addr, channel, page,
 525                 bcn_ord, sf_ord, pan_coord, blx, coord_realign);
 526
 527 out:
 528         dev_put(dev);
 529         return ret;
 530 }
 531
 532 int ieee802154_scan_req(struct sk_buff *skb, struct genl_info *info)
 533 {
 534         struct net_device *dev;
 535         int ret = -EOPNOTSUPP;
 536         u8 type;
 537         u32 channels;
 538         u8 duration;
 539         u8 page;
 540
 541         if (!info->attrs[IEEE802154_ATTR_SCAN_TYPE] ||
 542             !info->attrs[IEEE802154_ATTR_CHANNELS] ||
 543             !info->attrs[IEEE802154_ATTR_DURATION])
 544                 return -EINVAL;
 545
 546         dev = ieee802154_nl_get_dev(info);
 547         if (!dev)
 548                 return -ENODEV;
 549         if (!ieee802154_mlme_ops(dev)->scan_req)
 550                 goto out;
 551
 552         type = nla_get_u8(info->attrs[IEEE802154_ATTR_SCAN_TYPE]);
 553         channels = nla_get_u32(info->attrs[IEEE802154_ATTR_CHANNELS]);
 554         duration = nla_get_u8(info->attrs[IEEE802154_ATTR_DURATION]);
 555
 556         if (info->attrs[IEEE802154_ATTR_PAGE])
 557                 page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
 558         else
 559                 page = 0;
 560
 561
 562         ret = ieee802154_mlme_ops(dev)->scan_req(dev, type, channels, page,
 563                         duration);
 564
 565 out:
 566         dev_put(dev);
 567         return ret;
 568 }
 569
 570 int ieee802154_list_iface(struct sk_buff *skb, struct genl_info *info)
 571 {
 572         /* Request for interface name, index, type, IEEE address,
 573            PAN Id, short address */
 574         struct sk_buff *msg;
 575         struct net_device *dev = NULL;
 576         int rc = -ENOBUFS;
 577
 578         pr_debug("%s\n", __func__);
 579
 580         dev = ieee802154_nl_get_dev(info);
 581         if (!dev)
 582                 return -ENODEV;
 583
 584         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 585         if (!msg)
 586                 goto out_dev;
 587
 588         rc = ieee802154_nl_fill_iface(msg, info->snd_portid, info->snd_seq,
 589                         0, dev);
 590         if (rc < 0)
 591                 goto out_free;
 592
 593         dev_put(dev);
 594
 595         return genlmsg_reply(msg, info);
 596 out_free:
 597         nlmsg_free(msg);
 598 out_dev:
 599         dev_put(dev);
 600         return rc;
 601
 602 }
 603
 604 int ieee802154_dump_iface(struct sk_buff *skb, struct netlink_callback *cb)
 605 {
 606         struct net *net = sock_net(skb->sk);
 607         struct net_device *dev;
 608         int idx;
 609         int s_idx = cb->args[0];
 610
 611         pr_debug("%s\n", __func__);
 612
 613         idx = 0;
 614         for_each_netdev(net, dev) {
 615                 if (idx < s_idx || (dev->type != ARPHRD_IEEE802154))
 616                         goto cont;
 617
 618                 if (ieee802154_nl_fill_iface(skb, NETLINK_CB(cb->skb).portid,
 619                         cb->nlh->nlmsg_seq, NLM_F_MULTI, dev) < 0)
 620                         break;
 621 cont:
 622                 idx++;
 623         }
 624         cb->args[0] = idx;
 625
 626         return skb->len;
 627 }
 628
 629 int ieee802154_set_macparams(struct sk_buff *skb, struct genl_info *info)
 630 {
 631         struct net_device *dev = NULL;
 632         struct ieee802154_mlme_ops *ops;
 633         struct ieee802154_mac_params params;
 634         struct wpan_phy *phy;
 635         int rc = -EINVAL;
 636
 637         pr_debug("%s\n", __func__);
 638
 639         dev = ieee802154_nl_get_dev(info);
 640         if (!dev)
 641                 return -ENODEV;
 642
 643         ops = ieee802154_mlme_ops(dev);
 644
 645         if (!ops->get_mac_params || !ops->set_mac_params) {
 646                 rc = -EOPNOTSUPP;
 647                 goto out;
 648         }
 649
 650         if (netif_running(dev)) {
 651                 rc = -EBUSY;
 652                 goto out;
 653         }
 654
 655         if (!info->attrs[IEEE802154_ATTR_LBT_ENABLED] &&
 656             !info->attrs[IEEE802154_ATTR_CCA_MODE] &&
 657             !info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL] &&
 658             !info->attrs[IEEE802154_ATTR_CSMA_RETRIES] &&
 659             !info->attrs[IEEE802154_ATTR_CSMA_MIN_BE] &&
 660             !info->attrs[IEEE802154_ATTR_CSMA_MAX_BE] &&
 661             !info->attrs[IEEE802154_ATTR_FRAME_RETRIES])
 662                 goto out;
 663
 664         phy = ops->get_phy(dev);
 665
 666         if ((!phy->set_lbt && info->attrs[IEEE802154_ATTR_LBT_ENABLED]) ||
 667             (!phy->set_cca_mode && info->attrs[IEEE802154_ATTR_CCA_MODE]) ||
 668             (!phy->set_cca_ed_level &&
 669              info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL]) ||
 670             (!phy->set_csma_params &&
 671              (info->attrs[IEEE802154_ATTR_CSMA_RETRIES] ||
 672               info->attrs[IEEE802154_ATTR_CSMA_MIN_BE] ||
 673               info->attrs[IEEE802154_ATTR_CSMA_MAX_BE])) ||
 674             (!phy->set_frame_retries &&
 675              info->attrs[IEEE802154_ATTR_FRAME_RETRIES])) {
 676                 rc = -EOPNOTSUPP;
 677                 goto out_phy;
 678         }
 679
 680         ops->get_mac_params(dev, &params);
 681
 682         if (info->attrs[IEEE802154_ATTR_TXPOWER])
 683                 params.transmit_power = nla_get_s8(info->attrs[IEEE802154_ATTR_TXPOWER]);
 684
 685         if (info->attrs[IEEE802154_ATTR_LBT_ENABLED])
 686                 params.lbt = nla_get_u8(info->attrs[IEEE802154_ATTR_LBT_ENABLED]);
 687
 688         if (info->attrs[IEEE802154_ATTR_CCA_MODE])
 689                 params.cca_mode = nla_get_u8(info->attrs[IEEE802154_ATTR_CCA_MODE]);
 690
 691         if (info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL])
 692                 params.cca_ed_level = nla_get_s32(info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL]);
 693
 694         if (info->attrs[IEEE802154_ATTR_CSMA_RETRIES])
 695                 params.csma_retries = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_RETRIES]);
 696
 697         if (info->attrs[IEEE802154_ATTR_CSMA_MIN_BE])
 698                 params.min_be = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_MIN_BE]);
 699
 700         if (info->attrs[IEEE802154_ATTR_CSMA_MAX_BE])
 701                 params.max_be = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_MAX_BE]);
 702
 703         if (info->attrs[IEEE802154_ATTR_FRAME_RETRIES])
 704                 params.frame_retries = nla_get_s8(info->attrs[IEEE802154_ATTR_FRAME_RETRIES]);
 705
 706         rc = ops->set_mac_params(dev, &params);
 707
 708         wpan_phy_put(phy);
 709         dev_put(dev);
 710         return rc;
 711
 712 out_phy:
 713         wpan_phy_put(phy);
 714 out:
 715         dev_put(dev);
 716         return rc;
 717 }