1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Netlink interface for IEEE 802.15.4 stack 4 * 5 * Copyright 2007, 2008 Siemens AG 6 * 7 * Written by: 8 * Sergey Lapin <slapin@ossfans.org> 9 * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> 10 * Maxim Osipov <maxim.osipov@siemens.com> 11 */ 12 13#include <linux/gfp.h> 14#include <linux/kernel.h> 15#include <linux/if_arp.h> 16#include <linux/netdevice.h> 17#include <linux/ieee802154.h> 18#include <net/netlink.h> 19#include <net/genetlink.h> 20#include <net/sock.h> 21#include <linux/nl802154.h> 22#include <linux/export.h> 23#include <net/af_ieee802154.h> 24#include <net/ieee802154_netdev.h> 25#include <net/cfg802154.h> 26 27#include "ieee802154.h" 28 29static int nla_put_hwaddr(struct sk_buff *msg, int type, __le64 hwaddr, 30 int padattr) 31{ 32 return nla_put_u64_64bit(msg, type, swab64((__force u64)hwaddr), 33 padattr); 34} 35 36static __le64 nla_get_hwaddr(const struct nlattr *nla) 37{ 38 return ieee802154_devaddr_from_raw(nla_data(nla)); 39} 40 41static int nla_put_shortaddr(struct sk_buff *msg, int type, __le16 addr) 42{ 43 return nla_put_u16(msg, type, le16_to_cpu(addr)); 44} 45 46static __le16 nla_get_shortaddr(const struct nlattr *nla) 47{ 48 return cpu_to_le16(nla_get_u16(nla)); 49} 50 51static int ieee802154_nl_start_confirm(struct net_device *dev, u8 status) 52{ 53 struct sk_buff *msg; 54 55 pr_debug("%s\n", __func__); 56 57 msg = ieee802154_nl_create(0, IEEE802154_START_CONF); 58 if (!msg) 59 return -ENOBUFS; 60 61 if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) || 62 nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) || 63 nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN, 64 dev->dev_addr) || 65 nla_put_u8(msg, IEEE802154_ATTR_STATUS, status)) 66 goto nla_put_failure; 67 return ieee802154_nl_mcast(msg, IEEE802154_COORD_MCGRP); 68 69nla_put_failure: 70 nlmsg_free(msg); 71 return -ENOBUFS; 72} 73 74static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 portid, 75 u32 seq, int flags, struct net_device *dev) 76{ 77 void *hdr; 78 struct wpan_phy *phy; 79 struct ieee802154_mlme_ops *ops; 80 __le16 short_addr, pan_id; 81 82 pr_debug("%s\n", __func__); 83 84 hdr = genlmsg_put(msg, 0, seq, &nl802154_family, flags, 85 IEEE802154_LIST_IFACE); 86 if (!hdr) 87 goto out; 88 89 ops = ieee802154_mlme_ops(dev); 90 phy = dev->ieee802154_ptr->wpan_phy; 91 BUG_ON(!phy); 92 get_device(&phy->dev); 93 94 rtnl_lock(); 95 short_addr = dev->ieee802154_ptr->short_addr; 96 pan_id = dev->ieee802154_ptr->pan_id; 97 rtnl_unlock(); 98 99 if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) || 100 nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) || 101 nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) || 102 nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN, 103 dev->dev_addr) || 104 nla_put_shortaddr(msg, IEEE802154_ATTR_SHORT_ADDR, short_addr) || 105 nla_put_shortaddr(msg, IEEE802154_ATTR_PAN_ID, pan_id)) 106 goto nla_put_failure; 107 108 if (ops->get_mac_params) { 109 struct ieee802154_mac_params params; 110 111 rtnl_lock(); 112 ops->get_mac_params(dev, ¶ms); 113 rtnl_unlock(); 114 115 if (nla_put_s8(msg, IEEE802154_ATTR_TXPOWER, 116 params.transmit_power / 100) || 117 nla_put_u8(msg, IEEE802154_ATTR_LBT_ENABLED, params.lbt) || 118 nla_put_u8(msg, IEEE802154_ATTR_CCA_MODE, 119 params.cca.mode) || 120 nla_put_s32(msg, IEEE802154_ATTR_CCA_ED_LEVEL, 121 params.cca_ed_level / 100) || 122 nla_put_u8(msg, IEEE802154_ATTR_CSMA_RETRIES, 123 params.csma_retries) || 124 nla_put_u8(msg, IEEE802154_ATTR_CSMA_MIN_BE, 125 params.min_be) || 126 nla_put_u8(msg, IEEE802154_ATTR_CSMA_MAX_BE, 127 params.max_be) || 128 nla_put_s8(msg, IEEE802154_ATTR_FRAME_RETRIES, 129 params.frame_retries)) 130 goto nla_put_failure; 131 } 132 133 wpan_phy_put(phy); 134 genlmsg_end(msg, hdr); 135 return 0; 136 137nla_put_failure: 138 wpan_phy_put(phy); 139 genlmsg_cancel(msg, hdr); 140out: 141 return -EMSGSIZE; 142} 143 144/* Requests from userspace */ 145static struct net_device *ieee802154_nl_get_dev(struct genl_info *info) 146{ 147 struct net_device *dev; 148 149 if (info->attrs[IEEE802154_ATTR_DEV_NAME]) { 150 char name[IFNAMSIZ + 1]; 151 152 nla_strlcpy(name, info->attrs[IEEE802154_ATTR_DEV_NAME], 153 sizeof(name)); 154 dev = dev_get_by_name(&init_net, name); 155 } else if (info->attrs[IEEE802154_ATTR_DEV_INDEX]) { 156 dev = dev_get_by_index(&init_net, 157 nla_get_u32(info->attrs[IEEE802154_ATTR_DEV_INDEX])); 158 } else { 159 return NULL; 160 } 161 162 if (!dev) 163 return NULL; 164 165 if (dev->type != ARPHRD_IEEE802154) { 166 dev_put(dev); 167 return NULL; 168 } 169 170 return dev; 171} 172 173int ieee802154_associate_req(struct sk_buff *skb, struct genl_info *info) 174{ 175 struct net_device *dev; 176 struct ieee802154_addr addr; 177 u8 page; 178 int ret = -EOPNOTSUPP; 179 180 if (!info->attrs[IEEE802154_ATTR_CHANNEL] || 181 !info->attrs[IEEE802154_ATTR_COORD_PAN_ID] || 182 (!info->attrs[IEEE802154_ATTR_COORD_HW_ADDR] && 183 !info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]) || 184 !info->attrs[IEEE802154_ATTR_CAPABILITY]) 185 return -EINVAL; 186 187 dev = ieee802154_nl_get_dev(info); 188 if (!dev) 189 return -ENODEV; 190 if (!ieee802154_mlme_ops(dev)->assoc_req) 191 goto out; 192 193 if (info->attrs[IEEE802154_ATTR_COORD_HW_ADDR]) { 194 addr.mode = IEEE802154_ADDR_LONG; 195 addr.extended_addr = nla_get_hwaddr( 196 info->attrs[IEEE802154_ATTR_COORD_HW_ADDR]); 197 } else { 198 addr.mode = IEEE802154_ADDR_SHORT; 199 addr.short_addr = nla_get_shortaddr( 200 info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]); 201 } 202 addr.pan_id = nla_get_shortaddr( 203 info->attrs[IEEE802154_ATTR_COORD_PAN_ID]); 204 205 if (info->attrs[IEEE802154_ATTR_PAGE]) 206 page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]); 207 else 208 page = 0; 209 210 ret = ieee802154_mlme_ops(dev)->assoc_req(dev, &addr, 211 nla_get_u8(info->attrs[IEEE802154_ATTR_CHANNEL]), 212 page, 213 nla_get_u8(info->attrs[IEEE802154_ATTR_CAPABILITY])); 214 215out: 216 dev_put(dev); 217 return ret; 218} 219 220int ieee802154_associate_resp(struct sk_buff *skb, struct genl_info *info) 221{ 222 struct net_device *dev; 223 struct ieee802154_addr addr; 224 int ret = -EOPNOTSUPP; 225 226 if (!info->attrs[IEEE802154_ATTR_STATUS] || 227 !info->attrs[IEEE802154_ATTR_DEST_HW_ADDR] || 228 !info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]) 229 return -EINVAL; 230 231 dev = ieee802154_nl_get_dev(info); 232 if (!dev) 233 return -ENODEV; 234 if (!ieee802154_mlme_ops(dev)->assoc_resp) 235 goto out; 236 237 addr.mode = IEEE802154_ADDR_LONG; 238 addr.extended_addr = nla_get_hwaddr( 239 info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]); 240 rtnl_lock(); 241 addr.pan_id = dev->ieee802154_ptr->pan_id; 242 rtnl_unlock(); 243 244 ret = ieee802154_mlme_ops(dev)->assoc_resp(dev, &addr, 245 nla_get_shortaddr(info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]), 246 nla_get_u8(info->attrs[IEEE802154_ATTR_STATUS])); 247 248out: 249 dev_put(dev); 250 return ret; 251} 252 253int ieee802154_disassociate_req(struct sk_buff *skb, struct genl_info *info) 254{ 255 struct net_device *dev; 256 struct ieee802154_addr addr; 257 int ret = -EOPNOTSUPP; 258 259 if ((!info->attrs[IEEE802154_ATTR_DEST_HW_ADDR] && 260 !info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]) || 261 !info->attrs[IEEE802154_ATTR_REASON]) 262 return -EINVAL; 263 264 dev = ieee802154_nl_get_dev(info); 265 if (!dev) 266 return -ENODEV; 267 if (!ieee802154_mlme_ops(dev)->disassoc_req) 268 goto out; 269 270 if (info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]) { 271 addr.mode = IEEE802154_ADDR_LONG; 272 addr.extended_addr = nla_get_hwaddr( 273 info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]); 274 } else { 275 addr.mode = IEEE802154_ADDR_SHORT; 276 addr.short_addr = nla_get_shortaddr( 277 info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]); 278 } 279 rtnl_lock(); 280 addr.pan_id = dev->ieee802154_ptr->pan_id; 281 rtnl_unlock(); 282 283 ret = ieee802154_mlme_ops(dev)->disassoc_req(dev, &addr, 284 nla_get_u8(info->attrs[IEEE802154_ATTR_REASON])); 285 286out: 287 dev_put(dev); 288 return ret; 289} 290 291/* PANid, channel, beacon_order = 15, superframe_order = 15, 292 * PAN_coordinator, battery_life_extension = 0, 293 * coord_realignment = 0, security_enable = 0 294*/ 295int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info) 296{ 297 struct net_device *dev; 298 struct ieee802154_addr addr; 299 300 u8 channel, bcn_ord, sf_ord; 301 u8 page; 302 int pan_coord, blx, coord_realign; 303 int ret = -EBUSY; 304 305 if (!info->attrs[IEEE802154_ATTR_COORD_PAN_ID] || 306 !info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR] || 307 !info->attrs[IEEE802154_ATTR_CHANNEL] || 308 !info->attrs[IEEE802154_ATTR_BCN_ORD] || 309 !info->attrs[IEEE802154_ATTR_SF_ORD] || 310 !info->attrs[IEEE802154_ATTR_PAN_COORD] || 311 !info->attrs[IEEE802154_ATTR_BAT_EXT] || 312 !info->attrs[IEEE802154_ATTR_COORD_REALIGN] 313 ) 314 return -EINVAL; 315 316 dev = ieee802154_nl_get_dev(info); 317 if (!dev) 318 return -ENODEV; 319 320 if (netif_running(dev)) 321 goto out; 322 323 if (!ieee802154_mlme_ops(dev)->start_req) { 324 ret = -EOPNOTSUPP; 325 goto out; 326 } 327 328 addr.mode = IEEE802154_ADDR_SHORT; 329 addr.short_addr = nla_get_shortaddr( 330 info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]); 331 addr.pan_id = nla_get_shortaddr( 332 info->attrs[IEEE802154_ATTR_COORD_PAN_ID]); 333 334 channel = nla_get_u8(info->attrs[IEEE802154_ATTR_CHANNEL]); 335 bcn_ord = nla_get_u8(info->attrs[IEEE802154_ATTR_BCN_ORD]); 336 sf_ord = nla_get_u8(info->attrs[IEEE802154_ATTR_SF_ORD]); 337 pan_coord = nla_get_u8(info->attrs[IEEE802154_ATTR_PAN_COORD]); 338 blx = nla_get_u8(info->attrs[IEEE802154_ATTR_BAT_EXT]); 339 coord_realign = nla_get_u8(info->attrs[IEEE802154_ATTR_COORD_REALIGN]); 340 341 if (info->attrs[IEEE802154_ATTR_PAGE]) 342 page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]); 343 else 344 page = 0; 345 346 if (addr.short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST)) { 347 ieee802154_nl_start_confirm(dev, IEEE802154_NO_SHORT_ADDRESS); 348 dev_put(dev); 349 return -EINVAL; 350 } 351 352 rtnl_lock(); 353 ret = ieee802154_mlme_ops(dev)->start_req(dev, &addr, channel, page, 354 bcn_ord, sf_ord, pan_coord, blx, coord_realign); 355 rtnl_unlock(); 356 357 /* FIXME: add validation for unused parameters to be sane 358 * for SoftMAC 359 */ 360 ieee802154_nl_start_confirm(dev, IEEE802154_SUCCESS); 361 362out: 363 dev_put(dev); 364 return ret; 365} 366 367int ieee802154_scan_req(struct sk_buff *skb, struct genl_info *info) 368{ 369 struct net_device *dev; 370 int ret = -EOPNOTSUPP; 371 u8 type; 372 u32 channels; 373 u8 duration; 374 u8 page; 375 376 if (!info->attrs[IEEE802154_ATTR_SCAN_TYPE] || 377 !info->attrs[IEEE802154_ATTR_CHANNELS] || 378 !info->attrs[IEEE802154_ATTR_DURATION]) 379 return -EINVAL; 380 381 dev = ieee802154_nl_get_dev(info); 382 if (!dev) 383 return -ENODEV; 384 if (!ieee802154_mlme_ops(dev)->scan_req) 385 goto out; 386 387 type = nla_get_u8(info->attrs[IEEE802154_ATTR_SCAN_TYPE]); 388 channels = nla_get_u32(info->attrs[IEEE802154_ATTR_CHANNELS]); 389 duration = nla_get_u8(info->attrs[IEEE802154_ATTR_DURATION]); 390 391 if (info->attrs[IEEE802154_ATTR_PAGE]) 392 page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]); 393 else 394 page = 0; 395 396 ret = ieee802154_mlme_ops(dev)->scan_req(dev, type, channels, 397 page, duration); 398 399out: 400 dev_put(dev); 401 return ret; 402} 403 404int ieee802154_list_iface(struct sk_buff *skb, struct genl_info *info) 405{ 406 /* Request for interface name, index, type, IEEE address, 407 * PAN Id, short address 408 */ 409 struct sk_buff *msg; 410 struct net_device *dev = NULL; 411 int rc = -ENOBUFS; 412 413 pr_debug("%s\n", __func__); 414 415 dev = ieee802154_nl_get_dev(info); 416 if (!dev) 417 return -ENODEV; 418 419 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 420 if (!msg) 421 goto out_dev; 422 423 rc = ieee802154_nl_fill_iface(msg, info->snd_portid, info->snd_seq, 424 0, dev); 425 if (rc < 0) 426 goto out_free; 427 428 dev_put(dev); 429 430 return genlmsg_reply(msg, info); 431out_free: 432 nlmsg_free(msg); 433out_dev: 434 dev_put(dev); 435 return rc; 436} 437 438int ieee802154_dump_iface(struct sk_buff *skb, struct netlink_callback *cb) 439{ 440 struct net *net = sock_net(skb->sk); 441 struct net_device *dev; 442 int idx; 443 int s_idx = cb->args[0]; 444 445 pr_debug("%s\n", __func__); 446 447 idx = 0; 448 for_each_netdev(net, dev) { 449 if (idx < s_idx || dev->type != ARPHRD_IEEE802154) 450 goto cont; 451 452 if (ieee802154_nl_fill_iface(skb, NETLINK_CB(cb->skb).portid, 453 cb->nlh->nlmsg_seq, 454 NLM_F_MULTI, dev) < 0) 455 break; 456cont: 457 idx++; 458 } 459 cb->args[0] = idx; 460 461 return skb->len; 462} 463 464int ieee802154_set_macparams(struct sk_buff *skb, struct genl_info *info) 465{ 466 struct net_device *dev = NULL; 467 struct ieee802154_mlme_ops *ops; 468 struct ieee802154_mac_params params; 469 struct wpan_phy *phy; 470 int rc = -EINVAL; 471 472 pr_debug("%s\n", __func__); 473 474 dev = ieee802154_nl_get_dev(info); 475 if (!dev) 476 return -ENODEV; 477 478 ops = ieee802154_mlme_ops(dev); 479 480 if (!ops->get_mac_params || !ops->set_mac_params) { 481 rc = -EOPNOTSUPP; 482 goto out; 483 } 484 485 if (netif_running(dev)) { 486 rc = -EBUSY; 487 goto out; 488 } 489 490 if (!info->attrs[IEEE802154_ATTR_LBT_ENABLED] && 491 !info->attrs[IEEE802154_ATTR_CCA_MODE] && 492 !info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL] && 493 !info->attrs[IEEE802154_ATTR_CSMA_RETRIES] && 494 !info->attrs[IEEE802154_ATTR_CSMA_MIN_BE] && 495 !info->attrs[IEEE802154_ATTR_CSMA_MAX_BE] && 496 !info->attrs[IEEE802154_ATTR_FRAME_RETRIES]) 497 goto out; 498 499 phy = dev->ieee802154_ptr->wpan_phy; 500 get_device(&phy->dev); 501 502 rtnl_lock(); 503 ops->get_mac_params(dev, ¶ms); 504 505 if (info->attrs[IEEE802154_ATTR_TXPOWER]) 506 params.transmit_power = nla_get_s8(info->attrs[IEEE802154_ATTR_TXPOWER]) * 100; 507 508 if (info->attrs[IEEE802154_ATTR_LBT_ENABLED]) 509 params.lbt = nla_get_u8(info->attrs[IEEE802154_ATTR_LBT_ENABLED]); 510 511 if (info->attrs[IEEE802154_ATTR_CCA_MODE]) 512 params.cca.mode = nla_get_u8(info->attrs[IEEE802154_ATTR_CCA_MODE]); 513 514 if (info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL]) 515 params.cca_ed_level = nla_get_s32(info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL]) * 100; 516 517 if (info->attrs[IEEE802154_ATTR_CSMA_RETRIES]) 518 params.csma_retries = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_RETRIES]); 519 520 if (info->attrs[IEEE802154_ATTR_CSMA_MIN_BE]) 521 params.min_be = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_MIN_BE]); 522 523 if (info->attrs[IEEE802154_ATTR_CSMA_MAX_BE]) 524 params.max_be = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_MAX_BE]); 525 526 if (info->attrs[IEEE802154_ATTR_FRAME_RETRIES]) 527 params.frame_retries = nla_get_s8(info->attrs[IEEE802154_ATTR_FRAME_RETRIES]); 528 529 rc = ops->set_mac_params(dev, ¶ms); 530 rtnl_unlock(); 531 532 wpan_phy_put(phy); 533 dev_put(dev); 534 535 return 0; 536 537out: 538 dev_put(dev); 539 return rc; 540} 541 542static int 543ieee802154_llsec_parse_key_id(struct genl_info *info, 544 struct ieee802154_llsec_key_id *desc) 545{ 546 memset(desc, 0, sizeof(*desc)); 547 548 if (!info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE]) 549 return -EINVAL; 550 551 desc->mode = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE]); 552 553 if (desc->mode == IEEE802154_SCF_KEY_IMPLICIT) { 554 if (!info->attrs[IEEE802154_ATTR_PAN_ID]) 555 return -EINVAL; 556 557 desc->device_addr.pan_id = nla_get_shortaddr(info->attrs[IEEE802154_ATTR_PAN_ID]); 558 559 if (info->attrs[IEEE802154_ATTR_SHORT_ADDR]) { 560 desc->device_addr.mode = IEEE802154_ADDR_SHORT; 561 desc->device_addr.short_addr = nla_get_shortaddr(info->attrs[IEEE802154_ATTR_SHORT_ADDR]); 562 } else { 563 if (!info->attrs[IEEE802154_ATTR_HW_ADDR]) 564 return -EINVAL; 565 566 desc->device_addr.mode = IEEE802154_ADDR_LONG; 567 desc->device_addr.extended_addr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]); 568 } 569 } 570 571 if (desc->mode != IEEE802154_SCF_KEY_IMPLICIT && 572 !info->attrs[IEEE802154_ATTR_LLSEC_KEY_ID]) 573 return -EINVAL; 574 575 if (desc->mode == IEEE802154_SCF_KEY_SHORT_INDEX && 576 !info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_SHORT]) 577 return -EINVAL; 578 579 if (desc->mode == IEEE802154_SCF_KEY_HW_INDEX && 580 !info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_EXTENDED]) 581 return -EINVAL; 582 583 if (desc->mode != IEEE802154_SCF_KEY_IMPLICIT) 584 desc->id = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_KEY_ID]); 585 586 switch (desc->mode) { 587 case IEEE802154_SCF_KEY_SHORT_INDEX: 588 { 589 u32 source = nla_get_u32(info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_SHORT]); 590 591 desc->short_source = cpu_to_le32(source); 592 break; 593 } 594 case IEEE802154_SCF_KEY_HW_INDEX: 595 desc->extended_source = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_EXTENDED]); 596 break; 597 } 598 599 return 0; 600} 601 602static int 603ieee802154_llsec_fill_key_id(struct sk_buff *msg, 604 const struct ieee802154_llsec_key_id *desc) 605{ 606 if (nla_put_u8(msg, IEEE802154_ATTR_LLSEC_KEY_MODE, desc->mode)) 607 return -EMSGSIZE; 608 609 if (desc->mode == IEEE802154_SCF_KEY_IMPLICIT) { 610 if (nla_put_shortaddr(msg, IEEE802154_ATTR_PAN_ID, 611 desc->device_addr.pan_id)) 612 return -EMSGSIZE; 613 614 if (desc->device_addr.mode == IEEE802154_ADDR_SHORT && 615 nla_put_shortaddr(msg, IEEE802154_ATTR_SHORT_ADDR, 616 desc->device_addr.short_addr)) 617 return -EMSGSIZE; 618 619 if (desc->device_addr.mode == IEEE802154_ADDR_LONG && 620 nla_put_hwaddr(msg, IEEE802154_ATTR_HW_ADDR, 621 desc->device_addr.extended_addr, 622 IEEE802154_ATTR_PAD)) 623 return -EMSGSIZE; 624 } 625 626 if (desc->mode != IEEE802154_SCF_KEY_IMPLICIT && 627 nla_put_u8(msg, IEEE802154_ATTR_LLSEC_KEY_ID, desc->id)) 628 return -EMSGSIZE; 629 630 if (desc->mode == IEEE802154_SCF_KEY_SHORT_INDEX && 631 nla_put_u32(msg, IEEE802154_ATTR_LLSEC_KEY_SOURCE_SHORT, 632 le32_to_cpu(desc->short_source))) 633 return -EMSGSIZE; 634 635 if (desc->mode == IEEE802154_SCF_KEY_HW_INDEX && 636 nla_put_hwaddr(msg, IEEE802154_ATTR_LLSEC_KEY_SOURCE_EXTENDED, 637 desc->extended_source, IEEE802154_ATTR_PAD)) 638 return -EMSGSIZE; 639 640 return 0; 641} 642 643int ieee802154_llsec_getparams(struct sk_buff *skb, struct genl_info *info) 644{ 645 struct sk_buff *msg; 646 struct net_device *dev = NULL; 647 int rc = -ENOBUFS; 648 struct ieee802154_mlme_ops *ops; 649 void *hdr; 650 struct ieee802154_llsec_params params; 651 652 pr_debug("%s\n", __func__); 653 654 dev = ieee802154_nl_get_dev(info); 655 if (!dev) 656 return -ENODEV; 657 658 ops = ieee802154_mlme_ops(dev); 659 if (!ops->llsec) { 660 rc = -EOPNOTSUPP; 661 goto out_dev; 662 } 663 664 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 665 if (!msg) 666 goto out_dev; 667 668 hdr = genlmsg_put(msg, 0, info->snd_seq, &nl802154_family, 0, 669 IEEE802154_LLSEC_GETPARAMS); 670 if (!hdr) 671 goto out_free; 672 673 rc = ops->llsec->get_params(dev, ¶ms); 674 if (rc < 0) 675 goto out_free; 676 677 if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) || 678 nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) || 679 nla_put_u8(msg, IEEE802154_ATTR_LLSEC_ENABLED, params.enabled) || 680 nla_put_u8(msg, IEEE802154_ATTR_LLSEC_SECLEVEL, params.out_level) || 681 nla_put_u32(msg, IEEE802154_ATTR_LLSEC_FRAME_COUNTER, 682 be32_to_cpu(params.frame_counter)) || 683 ieee802154_llsec_fill_key_id(msg, ¶ms.out_key)) { 684 rc = -ENOBUFS; 685 goto out_free; 686 } 687 688 dev_put(dev); 689 690 return ieee802154_nl_reply(msg, info); 691out_free: 692 nlmsg_free(msg); 693out_dev: 694 dev_put(dev); 695 return rc; 696} 697 698int ieee802154_llsec_setparams(struct sk_buff *skb, struct genl_info *info) 699{ 700 struct net_device *dev = NULL; 701 int rc = -EINVAL; 702 struct ieee802154_mlme_ops *ops; 703 struct ieee802154_llsec_params params; 704 int changed = 0; 705 706 pr_debug("%s\n", __func__); 707 708 dev = ieee802154_nl_get_dev(info); 709 if (!dev) 710 return -ENODEV; 711 712 if (!info->attrs[IEEE802154_ATTR_LLSEC_ENABLED] && 713 !info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE] && 714 !info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL]) 715 goto out; 716 717 ops = ieee802154_mlme_ops(dev); 718 if (!ops->llsec) { 719 rc = -EOPNOTSUPP; 720 goto out; 721 } 722 723 if (info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL] && 724 nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL]) > 7) 725 goto out; 726 727 if (info->attrs[IEEE802154_ATTR_LLSEC_ENABLED]) { 728 params.enabled = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_ENABLED]); 729 changed |= IEEE802154_LLSEC_PARAM_ENABLED; 730 } 731 732 if (info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE]) { 733 if (ieee802154_llsec_parse_key_id(info, ¶ms.out_key)) 734 goto out; 735 736 changed |= IEEE802154_LLSEC_PARAM_OUT_KEY; 737 } 738 739 if (info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL]) { 740 params.out_level = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL]); 741 changed |= IEEE802154_LLSEC_PARAM_OUT_LEVEL; 742 } 743 744 if (info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]) { 745 u32 fc = nla_get_u32(info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]); 746 747 params.frame_counter = cpu_to_be32(fc); 748 changed |= IEEE802154_LLSEC_PARAM_FRAME_COUNTER; 749 } 750 751 rc = ops->llsec->set_params(dev, ¶ms, changed); 752 753 dev_put(dev); 754 755 return rc; 756out: 757 dev_put(dev); 758 return rc; 759} 760 761struct llsec_dump_data { 762 struct sk_buff *skb; 763 int s_idx, s_idx2; 764 int portid; 765 int nlmsg_seq; 766 struct net_device *dev; 767 struct ieee802154_mlme_ops *ops; 768 struct ieee802154_llsec_table *table; 769}; 770 771static int 772ieee802154_llsec_dump_table(struct sk_buff *skb, struct netlink_callback *cb, 773 int (*step)(struct llsec_dump_data *)) 774{ 775 struct net *net = sock_net(skb->sk); 776 struct net_device *dev; 777 struct llsec_dump_data data; 778 int idx = 0; 779 int first_dev = cb->args[0]; 780 int rc; 781 782 for_each_netdev(net, dev) { 783 if (idx < first_dev || dev->type != ARPHRD_IEEE802154) 784 goto skip; 785 786 data.ops = ieee802154_mlme_ops(dev); 787 if (!data.ops->llsec) 788 goto skip; 789 790 data.skb = skb; 791 data.s_idx = cb->args[1]; 792 data.s_idx2 = cb->args[2]; 793 data.dev = dev; 794 data.portid = NETLINK_CB(cb->skb).portid; 795 data.nlmsg_seq = cb->nlh->nlmsg_seq; 796 797 data.ops->llsec->lock_table(dev); 798 data.ops->llsec->get_table(data.dev, &data.table); 799 rc = step(&data); 800 data.ops->llsec->unlock_table(dev); 801 802 if (rc < 0) 803 break; 804 805skip: 806 idx++; 807 } 808 cb->args[0] = idx; 809 810 return skb->len; 811} 812 813static int 814ieee802154_nl_llsec_change(struct sk_buff *skb, struct genl_info *info, 815 int (*fn)(struct net_device*, struct genl_info*)) 816{ 817 struct net_device *dev = NULL; 818 int rc = -EINVAL; 819 820 dev = ieee802154_nl_get_dev(info); 821 if (!dev) 822 return -ENODEV; 823 824 if (!ieee802154_mlme_ops(dev)->llsec) 825 rc = -EOPNOTSUPP; 826 else 827 rc = fn(dev, info); 828 829 dev_put(dev); 830 return rc; 831} 832 833static int 834ieee802154_llsec_parse_key(struct genl_info *info, 835 struct ieee802154_llsec_key *key) 836{ 837 u8 frames; 838 u32 commands[256 / 32]; 839 840 memset(key, 0, sizeof(*key)); 841 842 if (!info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_FRAME_TYPES] || 843 !info->attrs[IEEE802154_ATTR_LLSEC_KEY_BYTES]) 844 return -EINVAL; 845 846 frames = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_FRAME_TYPES]); 847 if ((frames & BIT(IEEE802154_FC_TYPE_MAC_CMD)) && 848 !info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS]) 849 return -EINVAL; 850 851 if (info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS]) { 852 nla_memcpy(commands, 853 info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS], 854 256 / 8); 855 856 if (commands[0] || commands[1] || commands[2] || commands[3] || 857 commands[4] || commands[5] || commands[6] || 858 commands[7] >= BIT(IEEE802154_CMD_GTS_REQ + 1)) 859 return -EINVAL; 860 861 key->cmd_frame_ids = commands[7]; 862 } 863 864 key->frame_types = frames; 865 866 nla_memcpy(key->key, info->attrs[IEEE802154_ATTR_LLSEC_KEY_BYTES], 867 IEEE802154_LLSEC_KEY_SIZE); 868 869 return 0; 870} 871 872static int llsec_add_key(struct net_device *dev, struct genl_info *info) 873{ 874 struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); 875 struct ieee802154_llsec_key key; 876 struct ieee802154_llsec_key_id id; 877 878 if (ieee802154_llsec_parse_key(info, &key) || 879 ieee802154_llsec_parse_key_id(info, &id)) 880 return -EINVAL; 881 882 return ops->llsec->add_key(dev, &id, &key); 883} 884 885int ieee802154_llsec_add_key(struct sk_buff *skb, struct genl_info *info) 886{ 887 if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) != 888 (NLM_F_CREATE | NLM_F_EXCL)) 889 return -EINVAL; 890 891 return ieee802154_nl_llsec_change(skb, info, llsec_add_key); 892} 893 894static int llsec_remove_key(struct net_device *dev, struct genl_info *info) 895{ 896 struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); 897 struct ieee802154_llsec_key_id id; 898 899 if (ieee802154_llsec_parse_key_id(info, &id)) 900 return -EINVAL; 901 902 return ops->llsec->del_key(dev, &id); 903} 904 905int ieee802154_llsec_del_key(struct sk_buff *skb, struct genl_info *info) 906{ 907 return ieee802154_nl_llsec_change(skb, info, llsec_remove_key); 908} 909 910static int 911ieee802154_nl_fill_key(struct sk_buff *msg, u32 portid, u32 seq, 912 const struct ieee802154_llsec_key_entry *key, 913 const struct net_device *dev) 914{ 915 void *hdr; 916 u32 commands[256 / 32]; 917 918 hdr = genlmsg_put(msg, 0, seq, &nl802154_family, NLM_F_MULTI, 919 IEEE802154_LLSEC_LIST_KEY); 920 if (!hdr) 921 goto out; 922 923 if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) || 924 nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) || 925 ieee802154_llsec_fill_key_id(msg, &key->id) || 926 nla_put_u8(msg, IEEE802154_ATTR_LLSEC_KEY_USAGE_FRAME_TYPES, 927 key->key->frame_types)) 928 goto nla_put_failure; 929 930 if (key->key->frame_types & BIT(IEEE802154_FC_TYPE_MAC_CMD)) { 931 memset(commands, 0, sizeof(commands)); 932 commands[7] = key->key->cmd_frame_ids; 933 if (nla_put(msg, IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS, 934 sizeof(commands), commands)) 935 goto nla_put_failure; 936 } 937 938 if (nla_put(msg, IEEE802154_ATTR_LLSEC_KEY_BYTES, 939 IEEE802154_LLSEC_KEY_SIZE, key->key->key)) 940 goto nla_put_failure; 941 942 genlmsg_end(msg, hdr); 943 return 0; 944 945nla_put_failure: 946 genlmsg_cancel(msg, hdr); 947out: 948 return -EMSGSIZE; 949} 950 951static int llsec_iter_keys(struct llsec_dump_data *data) 952{ 953 struct ieee802154_llsec_key_entry *pos; 954 int rc = 0, idx = 0; 955 956 list_for_each_entry(pos, &data->table->keys, list) { 957 if (idx++ < data->s_idx) 958 continue; 959 960 if (ieee802154_nl_fill_key(data->skb, data->portid, 961 data->nlmsg_seq, pos, data->dev)) { 962 rc = -EMSGSIZE; 963 break; 964 } 965 966 data->s_idx++; 967 } 968 969 return rc; 970} 971 972int ieee802154_llsec_dump_keys(struct sk_buff *skb, struct netlink_callback *cb) 973{ 974 return ieee802154_llsec_dump_table(skb, cb, llsec_iter_keys); 975} 976 977static int 978llsec_parse_dev(struct genl_info *info, 979 struct ieee802154_llsec_device *dev) 980{ 981 memset(dev, 0, sizeof(*dev)); 982 983 if (!info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER] || 984 !info->attrs[IEEE802154_ATTR_HW_ADDR] || 985 !info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE] || 986 !info->attrs[IEEE802154_ATTR_LLSEC_DEV_KEY_MODE] || 987 (!!info->attrs[IEEE802154_ATTR_PAN_ID] != 988 !!info->attrs[IEEE802154_ATTR_SHORT_ADDR])) 989 return -EINVAL; 990 991 if (info->attrs[IEEE802154_ATTR_PAN_ID]) { 992 dev->pan_id = nla_get_shortaddr(info->attrs[IEEE802154_ATTR_PAN_ID]); 993 dev->short_addr = nla_get_shortaddr(info->attrs[IEEE802154_ATTR_SHORT_ADDR]); 994 } else { 995 dev->short_addr = cpu_to_le16(IEEE802154_ADDR_UNDEF); 996 } 997 998 dev->hwaddr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]); 999 dev->frame_counter = nla_get_u32(info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]); 1000 dev->seclevel_exempt = !!nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE]); 1001 dev->key_mode = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_DEV_KEY_MODE]); 1002 1003 if (dev->key_mode >= __IEEE802154_LLSEC_DEVKEY_MAX) 1004 return -EINVAL; 1005 1006 return 0; 1007} 1008 1009static int llsec_add_dev(struct net_device *dev, struct genl_info *info) 1010{ 1011 struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); 1012 struct ieee802154_llsec_device desc; 1013 1014 if (llsec_parse_dev(info, &desc)) 1015 return -EINVAL; 1016 1017 return ops->llsec->add_dev(dev, &desc); 1018} 1019 1020int ieee802154_llsec_add_dev(struct sk_buff *skb, struct genl_info *info) 1021{ 1022 if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) != 1023 (NLM_F_CREATE | NLM_F_EXCL)) 1024 return -EINVAL; 1025 1026 return ieee802154_nl_llsec_change(skb, info, llsec_add_dev); 1027} 1028 1029static int llsec_del_dev(struct net_device *dev, struct genl_info *info) 1030{ 1031 struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); 1032 __le64 devaddr; 1033 1034 if (!info->attrs[IEEE802154_ATTR_HW_ADDR]) 1035 return -EINVAL; 1036 1037 devaddr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]); 1038 1039 return ops->llsec->del_dev(dev, devaddr); 1040} 1041 1042int ieee802154_llsec_del_dev(struct sk_buff *skb, struct genl_info *info) 1043{ 1044 return ieee802154_nl_llsec_change(skb, info, llsec_del_dev); 1045} 1046 1047static int 1048ieee802154_nl_fill_dev(struct sk_buff *msg, u32 portid, u32 seq, 1049 const struct ieee802154_llsec_device *desc, 1050 const struct net_device *dev) 1051{ 1052 void *hdr; 1053 1054 hdr = genlmsg_put(msg, 0, seq, &nl802154_family, NLM_F_MULTI, 1055 IEEE802154_LLSEC_LIST_DEV); 1056 if (!hdr) 1057 goto out; 1058 1059 if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) || 1060 nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) || 1061 nla_put_shortaddr(msg, IEEE802154_ATTR_PAN_ID, desc->pan_id) || 1062 nla_put_shortaddr(msg, IEEE802154_ATTR_SHORT_ADDR, 1063 desc->short_addr) || 1064 nla_put_hwaddr(msg, IEEE802154_ATTR_HW_ADDR, desc->hwaddr, 1065 IEEE802154_ATTR_PAD) || 1066 nla_put_u32(msg, IEEE802154_ATTR_LLSEC_FRAME_COUNTER, 1067 desc->frame_counter) || 1068 nla_put_u8(msg, IEEE802154_ATTR_LLSEC_DEV_OVERRIDE, 1069 desc->seclevel_exempt) || 1070 nla_put_u8(msg, IEEE802154_ATTR_LLSEC_DEV_KEY_MODE, desc->key_mode)) 1071 goto nla_put_failure; 1072 1073 genlmsg_end(msg, hdr); 1074 return 0; 1075 1076nla_put_failure: 1077 genlmsg_cancel(msg, hdr); 1078out: 1079 return -EMSGSIZE; 1080} 1081 1082static int llsec_iter_devs(struct llsec_dump_data *data) 1083{ 1084 struct ieee802154_llsec_device *pos; 1085 int rc = 0, idx = 0; 1086 1087 list_for_each_entry(pos, &data->table->devices, list) { 1088 if (idx++ < data->s_idx) 1089 continue; 1090 1091 if (ieee802154_nl_fill_dev(data->skb, data->portid, 1092 data->nlmsg_seq, pos, data->dev)) { 1093 rc = -EMSGSIZE; 1094 break; 1095 } 1096 1097 data->s_idx++; 1098 } 1099 1100 return rc; 1101} 1102 1103int ieee802154_llsec_dump_devs(struct sk_buff *skb, struct netlink_callback *cb) 1104{ 1105 return ieee802154_llsec_dump_table(skb, cb, llsec_iter_devs); 1106} 1107 1108static int llsec_add_devkey(struct net_device *dev, struct genl_info *info) 1109{ 1110 struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); 1111 struct ieee802154_llsec_device_key key; 1112 __le64 devaddr; 1113 1114 if (!info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER] || 1115 !info->attrs[IEEE802154_ATTR_HW_ADDR] || 1116 ieee802154_llsec_parse_key_id(info, &key.key_id)) 1117 return -EINVAL; 1118 1119 devaddr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]); 1120 key.frame_counter = nla_get_u32(info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]); 1121 1122 return ops->llsec->add_devkey(dev, devaddr, &key); 1123} 1124 1125int ieee802154_llsec_add_devkey(struct sk_buff *skb, struct genl_info *info) 1126{ 1127 if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) != 1128 (NLM_F_CREATE | NLM_F_EXCL)) 1129 return -EINVAL; 1130 1131 return ieee802154_nl_llsec_change(skb, info, llsec_add_devkey); 1132} 1133 1134static int llsec_del_devkey(struct net_device *dev, struct genl_info *info) 1135{ 1136 struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); 1137 struct ieee802154_llsec_device_key key; 1138 __le64 devaddr; 1139 1140 if (!info->attrs[IEEE802154_ATTR_HW_ADDR] || 1141 ieee802154_llsec_parse_key_id(info, &key.key_id)) 1142 return -EINVAL; 1143 1144 devaddr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]); 1145 1146 return ops->llsec->del_devkey(dev, devaddr, &key); 1147} 1148 1149int ieee802154_llsec_del_devkey(struct sk_buff *skb, struct genl_info *info) 1150{ 1151 return ieee802154_nl_llsec_change(skb, info, llsec_del_devkey); 1152} 1153 1154static int 1155ieee802154_nl_fill_devkey(struct sk_buff *msg, u32 portid, u32 seq, 1156 __le64 devaddr, 1157 const struct ieee802154_llsec_device_key *devkey, 1158 const struct net_device *dev) 1159{ 1160 void *hdr; 1161 1162 hdr = genlmsg_put(msg, 0, seq, &nl802154_family, NLM_F_MULTI, 1163 IEEE802154_LLSEC_LIST_DEVKEY); 1164 if (!hdr) 1165 goto out; 1166 1167 if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) || 1168 nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) || 1169 nla_put_hwaddr(msg, IEEE802154_ATTR_HW_ADDR, devaddr, 1170 IEEE802154_ATTR_PAD) || 1171 nla_put_u32(msg, IEEE802154_ATTR_LLSEC_FRAME_COUNTER, 1172 devkey->frame_counter) || 1173 ieee802154_llsec_fill_key_id(msg, &devkey->key_id)) 1174 goto nla_put_failure; 1175 1176 genlmsg_end(msg, hdr); 1177 return 0; 1178 1179nla_put_failure: 1180 genlmsg_cancel(msg, hdr); 1181out: 1182 return -EMSGSIZE; 1183} 1184 1185static int llsec_iter_devkeys(struct llsec_dump_data *data) 1186{ 1187 struct ieee802154_llsec_device *dpos; 1188 struct ieee802154_llsec_device_key *kpos; 1189 int rc = 0, idx = 0, idx2; 1190 1191 list_for_each_entry(dpos, &data->table->devices, list) { 1192 if (idx++ < data->s_idx) 1193 continue; 1194 1195 idx2 = 0; 1196 1197 list_for_each_entry(kpos, &dpos->keys, list) { 1198 if (idx2++ < data->s_idx2) 1199 continue; 1200 1201 if (ieee802154_nl_fill_devkey(data->skb, data->portid, 1202 data->nlmsg_seq, 1203 dpos->hwaddr, kpos, 1204 data->dev)) { 1205 return rc = -EMSGSIZE; 1206 } 1207 1208 data->s_idx2++; 1209 } 1210 1211 data->s_idx++; 1212 } 1213 1214 return rc; 1215} 1216 1217int ieee802154_llsec_dump_devkeys(struct sk_buff *skb, 1218 struct netlink_callback *cb) 1219{ 1220 return ieee802154_llsec_dump_table(skb, cb, llsec_iter_devkeys); 1221} 1222 1223static int 1224llsec_parse_seclevel(struct genl_info *info, 1225 struct ieee802154_llsec_seclevel *sl) 1226{ 1227 memset(sl, 0, sizeof(*sl)); 1228 1229 if (!info->attrs[IEEE802154_ATTR_LLSEC_FRAME_TYPE] || 1230 !info->attrs[IEEE802154_ATTR_LLSEC_SECLEVELS] || 1231 !info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE]) 1232 return -EINVAL; 1233 1234 sl->frame_type = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_FRAME_TYPE]); 1235 if (sl->frame_type == IEEE802154_FC_TYPE_MAC_CMD) { 1236 if (!info->attrs[IEEE802154_ATTR_LLSEC_CMD_FRAME_ID]) 1237 return -EINVAL; 1238 1239 sl->cmd_frame_id = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_CMD_FRAME_ID]); 1240 } 1241 1242 sl->sec_levels = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_SECLEVELS]); 1243 sl->device_override = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE]); 1244 1245 return 0; 1246} 1247 1248static int llsec_add_seclevel(struct net_device *dev, struct genl_info *info) 1249{ 1250 struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); 1251 struct ieee802154_llsec_seclevel sl; 1252 1253 if (llsec_parse_seclevel(info, &sl)) 1254 return -EINVAL; 1255 1256 return ops->llsec->add_seclevel(dev, &sl); 1257} 1258 1259int ieee802154_llsec_add_seclevel(struct sk_buff *skb, struct genl_info *info) 1260{ 1261 if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) != 1262 (NLM_F_CREATE | NLM_F_EXCL)) 1263 return -EINVAL; 1264 1265 return ieee802154_nl_llsec_change(skb, info, llsec_add_seclevel); 1266} 1267 1268static int llsec_del_seclevel(struct net_device *dev, struct genl_info *info) 1269{ 1270 struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); 1271 struct ieee802154_llsec_seclevel sl; 1272 1273 if (llsec_parse_seclevel(info, &sl)) 1274 return -EINVAL; 1275 1276 return ops->llsec->del_seclevel(dev, &sl); 1277} 1278 1279int ieee802154_llsec_del_seclevel(struct sk_buff *skb, struct genl_info *info) 1280{ 1281 return ieee802154_nl_llsec_change(skb, info, llsec_del_seclevel); 1282} 1283 1284static int 1285ieee802154_nl_fill_seclevel(struct sk_buff *msg, u32 portid, u32 seq, 1286 const struct ieee802154_llsec_seclevel *sl, 1287 const struct net_device *dev) 1288{ 1289 void *hdr; 1290 1291 hdr = genlmsg_put(msg, 0, seq, &nl802154_family, NLM_F_MULTI, 1292 IEEE802154_LLSEC_LIST_SECLEVEL); 1293 if (!hdr) 1294 goto out; 1295 1296 if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) || 1297 nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) || 1298 nla_put_u8(msg, IEEE802154_ATTR_LLSEC_FRAME_TYPE, sl->frame_type) || 1299 nla_put_u8(msg, IEEE802154_ATTR_LLSEC_SECLEVELS, sl->sec_levels) || 1300 nla_put_u8(msg, IEEE802154_ATTR_LLSEC_DEV_OVERRIDE, 1301 sl->device_override)) 1302 goto nla_put_failure; 1303 1304 if (sl->frame_type == IEEE802154_FC_TYPE_MAC_CMD && 1305 nla_put_u8(msg, IEEE802154_ATTR_LLSEC_CMD_FRAME_ID, 1306 sl->cmd_frame_id)) 1307 goto nla_put_failure; 1308 1309 genlmsg_end(msg, hdr); 1310 return 0; 1311 1312nla_put_failure: 1313 genlmsg_cancel(msg, hdr); 1314out: 1315 return -EMSGSIZE; 1316} 1317 1318static int llsec_iter_seclevels(struct llsec_dump_data *data) 1319{ 1320 struct ieee802154_llsec_seclevel *pos; 1321 int rc = 0, idx = 0; 1322 1323 list_for_each_entry(pos, &data->table->security_levels, list) { 1324 if (idx++ < data->s_idx) 1325 continue; 1326 1327 if (ieee802154_nl_fill_seclevel(data->skb, data->portid, 1328 data->nlmsg_seq, pos, 1329 data->dev)) { 1330 rc = -EMSGSIZE; 1331 break; 1332 } 1333 1334 data->s_idx++; 1335 } 1336 1337 return rc; 1338} 1339 1340int ieee802154_llsec_dump_seclevels(struct sk_buff *skb, 1341 struct netlink_callback *cb) 1342{ 1343 return ieee802154_llsec_dump_table(skb, cb, llsec_iter_seclevels); 1344} 1345