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 29 static 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 36 static __le64 nla_get_hwaddr(const struct nlattr *nla) 37 { 38 return ieee802154_devaddr_from_raw(nla_data(nla)); 39 } 40 41 static 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 46 static __le16 nla_get_shortaddr(const struct nlattr *nla) 47 { 48 return cpu_to_le16(nla_get_u16(nla)); 49 } 50 51 static 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 69 nla_put_failure: 70 nlmsg_free(msg); 71 return -ENOBUFS; 72 } 73 74 static 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; 136 137 nla_put_failure: 138 wpan_phy_put(phy); 139 genlmsg_cancel(msg, hdr); 140 out: 141 return -EMSGSIZE; 142 } 143 144 /* Requests from userspace */ 145 static 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_strscpy(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 } 172 173 int 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])); 214 215 out: 216 dev_put(dev); 217 return ret; 218 } 219 220 int 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])); 247 248 out: 249 dev_put(dev); 250 return ret; 251 } 252 253 int 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])); 285 286 out: 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 */ 295 int 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); 361 362 out: 363 dev_put(dev); 364 return ret; 365 } 366 367 int 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); 398 399 out: 400 dev_put(dev); 401 return ret; 402 } 403 404 int 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); 431 out_free: 432 nlmsg_free(msg); 433 out_dev: 434 dev_put(dev); 435 return rc; 436 } 437 438 int 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; 456 cont: 457 idx++; 458 } 459 cb->args[0] = idx; 460 461 return skb->len; 462 } 463 464 int 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; 536 537 out: 538 dev_put(dev); 539 return rc; 540 } 541 542 static int 543 ieee802154_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 } 601 602 static int 603 ieee802154_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 } 642 643 int 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 goto out_free; 685 686 dev_put(dev); 687 688 return ieee802154_nl_reply(msg, info); 689 out_free: 690 nlmsg_free(msg); 691 out_dev: 692 dev_put(dev); 693 return rc; 694 } 695 696 int ieee802154_llsec_setparams(struct sk_buff *skb, struct genl_info *info) 697 { 698 struct net_device *dev = NULL; 699 int rc = -EINVAL; 700 struct ieee802154_mlme_ops *ops; 701 struct ieee802154_llsec_params params; 702 int changed = 0; 703 704 pr_debug("%s\n", __func__); 705 706 dev = ieee802154_nl_get_dev(info); 707 if (!dev) 708 return -ENODEV; 709 710 if (!info->attrs[IEEE802154_ATTR_LLSEC_ENABLED] && 711 !info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE] && 712 !info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL]) 713 goto out; 714 715 ops = ieee802154_mlme_ops(dev); 716 if (!ops->llsec) { 717 rc = -EOPNOTSUPP; 718 goto out; 719 } 720 721 if (info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL] && 722 nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL]) > 7) 723 goto out; 724 725 if (info->attrs[IEEE802154_ATTR_LLSEC_ENABLED]) { 726 params.enabled = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_ENABLED]); 727 changed |= IEEE802154_LLSEC_PARAM_ENABLED; 728 } 729 730 if (info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE]) { 731 if (ieee802154_llsec_parse_key_id(info, ¶ms.out_key)) 732 goto out; 733 734 changed |= IEEE802154_LLSEC_PARAM_OUT_KEY; 735 } 736 737 if (info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL]) { 738 params.out_level = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL]); 739 changed |= IEEE802154_LLSEC_PARAM_OUT_LEVEL; 740 } 741 742 if (info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]) { 743 u32 fc = nla_get_u32(info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]); 744 745 params.frame_counter = cpu_to_be32(fc); 746 changed |= IEEE802154_LLSEC_PARAM_FRAME_COUNTER; 747 } 748 749 rc = ops->llsec->set_params(dev, ¶ms, changed); 750 751 dev_put(dev); 752 753 return rc; 754 out: 755 dev_put(dev); 756 return rc; 757 } 758 759 struct llsec_dump_data { 760 struct sk_buff *skb; 761 int s_idx, s_idx2; 762 int portid; 763 int nlmsg_seq; 764 struct net_device *dev; 765 struct ieee802154_mlme_ops *ops; 766 struct ieee802154_llsec_table *table; 767 }; 768 769 static int 770 ieee802154_llsec_dump_table(struct sk_buff *skb, struct netlink_callback *cb, 771 int (*step)(struct llsec_dump_data *)) 772 { 773 struct net *net = sock_net(skb->sk); 774 struct net_device *dev; 775 struct llsec_dump_data data; 776 int idx = 0; 777 int first_dev = cb->args[0]; 778 int rc; 779 780 for_each_netdev(net, dev) { 781 if (idx < first_dev || dev->type != ARPHRD_IEEE802154) 782 goto skip; 783 784 data.ops = ieee802154_mlme_ops(dev); 785 if (!data.ops->llsec) 786 goto skip; 787 788 data.skb = skb; 789 data.s_idx = cb->args[1]; 790 data.s_idx2 = cb->args[2]; 791 data.dev = dev; 792 data.portid = NETLINK_CB(cb->skb).portid; 793 data.nlmsg_seq = cb->nlh->nlmsg_seq; 794 795 data.ops->llsec->lock_table(dev); 796 data.ops->llsec->get_table(data.dev, &data.table); 797 rc = step(&data); 798 data.ops->llsec->unlock_table(dev); 799 800 if (rc < 0) 801 break; 802 803 skip: 804 idx++; 805 } 806 cb->args[0] = idx; 807 808 return skb->len; 809 } 810 811 static int 812 ieee802154_nl_llsec_change(struct sk_buff *skb, struct genl_info *info, 813 int (*fn)(struct net_device*, struct genl_info*)) 814 { 815 struct net_device *dev = NULL; 816 int rc = -EINVAL; 817 818 dev = ieee802154_nl_get_dev(info); 819 if (!dev) 820 return -ENODEV; 821 822 if (!ieee802154_mlme_ops(dev)->llsec) 823 rc = -EOPNOTSUPP; 824 else 825 rc = fn(dev, info); 826 827 dev_put(dev); 828 return rc; 829 } 830 831 static int 832 ieee802154_llsec_parse_key(struct genl_info *info, 833 struct ieee802154_llsec_key *key) 834 { 835 u8 frames; 836 u32 commands[256 / 32]; 837 838 memset(key, 0, sizeof(*key)); 839 840 if (!info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_FRAME_TYPES] || 841 !info->attrs[IEEE802154_ATTR_LLSEC_KEY_BYTES]) 842 return -EINVAL; 843 844 frames = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_FRAME_TYPES]); 845 if ((frames & BIT(IEEE802154_FC_TYPE_MAC_CMD)) && 846 !info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS]) 847 return -EINVAL; 848 849 if (info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS]) { 850 nla_memcpy(commands, 851 info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS], 852 256 / 8); 853 854 if (commands[0] || commands[1] || commands[2] || commands[3] || 855 commands[4] || commands[5] || commands[6] || 856 commands[7] >= BIT(IEEE802154_CMD_GTS_REQ + 1)) 857 return -EINVAL; 858 859 key->cmd_frame_ids = commands[7]; 860 } 861 862 key->frame_types = frames; 863 864 nla_memcpy(key->key, info->attrs[IEEE802154_ATTR_LLSEC_KEY_BYTES], 865 IEEE802154_LLSEC_KEY_SIZE); 866 867 return 0; 868 } 869 870 static int llsec_add_key(struct net_device *dev, struct genl_info *info) 871 { 872 struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); 873 struct ieee802154_llsec_key key; 874 struct ieee802154_llsec_key_id id; 875 876 if (ieee802154_llsec_parse_key(info, &key) || 877 ieee802154_llsec_parse_key_id(info, &id)) 878 return -EINVAL; 879 880 return ops->llsec->add_key(dev, &id, &key); 881 } 882 883 int ieee802154_llsec_add_key(struct sk_buff *skb, struct genl_info *info) 884 { 885 if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) != 886 (NLM_F_CREATE | NLM_F_EXCL)) 887 return -EINVAL; 888 889 return ieee802154_nl_llsec_change(skb, info, llsec_add_key); 890 } 891 892 static int llsec_remove_key(struct net_device *dev, struct genl_info *info) 893 { 894 struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); 895 struct ieee802154_llsec_key_id id; 896 897 if (ieee802154_llsec_parse_key_id(info, &id)) 898 return -EINVAL; 899 900 return ops->llsec->del_key(dev, &id); 901 } 902 903 int ieee802154_llsec_del_key(struct sk_buff *skb, struct genl_info *info) 904 { 905 return ieee802154_nl_llsec_change(skb, info, llsec_remove_key); 906 } 907 908 static int 909 ieee802154_nl_fill_key(struct sk_buff *msg, u32 portid, u32 seq, 910 const struct ieee802154_llsec_key_entry *key, 911 const struct net_device *dev) 912 { 913 void *hdr; 914 u32 commands[256 / 32]; 915 916 hdr = genlmsg_put(msg, 0, seq, &nl802154_family, NLM_F_MULTI, 917 IEEE802154_LLSEC_LIST_KEY); 918 if (!hdr) 919 goto out; 920 921 if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) || 922 nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) || 923 ieee802154_llsec_fill_key_id(msg, &key->id) || 924 nla_put_u8(msg, IEEE802154_ATTR_LLSEC_KEY_USAGE_FRAME_TYPES, 925 key->key->frame_types)) 926 goto nla_put_failure; 927 928 if (key->key->frame_types & BIT(IEEE802154_FC_TYPE_MAC_CMD)) { 929 memset(commands, 0, sizeof(commands)); 930 commands[7] = key->key->cmd_frame_ids; 931 if (nla_put(msg, IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS, 932 sizeof(commands), commands)) 933 goto nla_put_failure; 934 } 935 936 if (nla_put(msg, IEEE802154_ATTR_LLSEC_KEY_BYTES, 937 IEEE802154_LLSEC_KEY_SIZE, key->key->key)) 938 goto nla_put_failure; 939 940 genlmsg_end(msg, hdr); 941 return 0; 942 943 nla_put_failure: 944 genlmsg_cancel(msg, hdr); 945 out: 946 return -EMSGSIZE; 947 } 948 949 static int llsec_iter_keys(struct llsec_dump_data *data) 950 { 951 struct ieee802154_llsec_key_entry *pos; 952 int rc = 0, idx = 0; 953 954 list_for_each_entry(pos, &data->table->keys, list) { 955 if (idx++ < data->s_idx) 956 continue; 957 958 if (ieee802154_nl_fill_key(data->skb, data->portid, 959 data->nlmsg_seq, pos, data->dev)) { 960 rc = -EMSGSIZE; 961 break; 962 } 963 964 data->s_idx++; 965 } 966 967 return rc; 968 } 969 970 int ieee802154_llsec_dump_keys(struct sk_buff *skb, struct netlink_callback *cb) 971 { 972 return ieee802154_llsec_dump_table(skb, cb, llsec_iter_keys); 973 } 974 975 static int 976 llsec_parse_dev(struct genl_info *info, 977 struct ieee802154_llsec_device *dev) 978 { 979 memset(dev, 0, sizeof(*dev)); 980 981 if (!info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER] || 982 !info->attrs[IEEE802154_ATTR_HW_ADDR] || 983 !info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE] || 984 !info->attrs[IEEE802154_ATTR_LLSEC_DEV_KEY_MODE] || 985 (!!info->attrs[IEEE802154_ATTR_PAN_ID] != 986 !!info->attrs[IEEE802154_ATTR_SHORT_ADDR])) 987 return -EINVAL; 988 989 if (info->attrs[IEEE802154_ATTR_PAN_ID]) { 990 dev->pan_id = nla_get_shortaddr(info->attrs[IEEE802154_ATTR_PAN_ID]); 991 dev->short_addr = nla_get_shortaddr(info->attrs[IEEE802154_ATTR_SHORT_ADDR]); 992 } else { 993 dev->short_addr = cpu_to_le16(IEEE802154_ADDR_UNDEF); 994 } 995 996 dev->hwaddr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]); 997 dev->frame_counter = nla_get_u32(info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]); 998 dev->seclevel_exempt = !!nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE]); 999 dev->key_mode = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_DEV_KEY_MODE]); 1000 1001 if (dev->key_mode >= __IEEE802154_LLSEC_DEVKEY_MAX) 1002 return -EINVAL; 1003 1004 return 0; 1005 } 1006 1007 static int llsec_add_dev(struct net_device *dev, struct genl_info *info) 1008 { 1009 struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); 1010 struct ieee802154_llsec_device desc; 1011 1012 if (llsec_parse_dev(info, &desc)) 1013 return -EINVAL; 1014 1015 return ops->llsec->add_dev(dev, &desc); 1016 } 1017 1018 int ieee802154_llsec_add_dev(struct sk_buff *skb, struct genl_info *info) 1019 { 1020 if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) != 1021 (NLM_F_CREATE | NLM_F_EXCL)) 1022 return -EINVAL; 1023 1024 return ieee802154_nl_llsec_change(skb, info, llsec_add_dev); 1025 } 1026 1027 static int llsec_del_dev(struct net_device *dev, struct genl_info *info) 1028 { 1029 struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); 1030 __le64 devaddr; 1031 1032 if (!info->attrs[IEEE802154_ATTR_HW_ADDR]) 1033 return -EINVAL; 1034 1035 devaddr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]); 1036 1037 return ops->llsec->del_dev(dev, devaddr); 1038 } 1039 1040 int ieee802154_llsec_del_dev(struct sk_buff *skb, struct genl_info *info) 1041 { 1042 return ieee802154_nl_llsec_change(skb, info, llsec_del_dev); 1043 } 1044 1045 static int 1046 ieee802154_nl_fill_dev(struct sk_buff *msg, u32 portid, u32 seq, 1047 const struct ieee802154_llsec_device *desc, 1048 const struct net_device *dev) 1049 { 1050 void *hdr; 1051 1052 hdr = genlmsg_put(msg, 0, seq, &nl802154_family, NLM_F_MULTI, 1053 IEEE802154_LLSEC_LIST_DEV); 1054 if (!hdr) 1055 goto out; 1056 1057 if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) || 1058 nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) || 1059 nla_put_shortaddr(msg, IEEE802154_ATTR_PAN_ID, desc->pan_id) || 1060 nla_put_shortaddr(msg, IEEE802154_ATTR_SHORT_ADDR, 1061 desc->short_addr) || 1062 nla_put_hwaddr(msg, IEEE802154_ATTR_HW_ADDR, desc->hwaddr, 1063 IEEE802154_ATTR_PAD) || 1064 nla_put_u32(msg, IEEE802154_ATTR_LLSEC_FRAME_COUNTER, 1065 desc->frame_counter) || 1066 nla_put_u8(msg, IEEE802154_ATTR_LLSEC_DEV_OVERRIDE, 1067 desc->seclevel_exempt) || 1068 nla_put_u8(msg, IEEE802154_ATTR_LLSEC_DEV_KEY_MODE, desc->key_mode)) 1069 goto nla_put_failure; 1070 1071 genlmsg_end(msg, hdr); 1072 return 0; 1073 1074 nla_put_failure: 1075 genlmsg_cancel(msg, hdr); 1076 out: 1077 return -EMSGSIZE; 1078 } 1079 1080 static int llsec_iter_devs(struct llsec_dump_data *data) 1081 { 1082 struct ieee802154_llsec_device *pos; 1083 int rc = 0, idx = 0; 1084 1085 list_for_each_entry(pos, &data->table->devices, list) { 1086 if (idx++ < data->s_idx) 1087 continue; 1088 1089 if (ieee802154_nl_fill_dev(data->skb, data->portid, 1090 data->nlmsg_seq, pos, data->dev)) { 1091 rc = -EMSGSIZE; 1092 break; 1093 } 1094 1095 data->s_idx++; 1096 } 1097 1098 return rc; 1099 } 1100 1101 int ieee802154_llsec_dump_devs(struct sk_buff *skb, struct netlink_callback *cb) 1102 { 1103 return ieee802154_llsec_dump_table(skb, cb, llsec_iter_devs); 1104 } 1105 1106 static int llsec_add_devkey(struct net_device *dev, struct genl_info *info) 1107 { 1108 struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); 1109 struct ieee802154_llsec_device_key key; 1110 __le64 devaddr; 1111 1112 if (!info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER] || 1113 !info->attrs[IEEE802154_ATTR_HW_ADDR] || 1114 ieee802154_llsec_parse_key_id(info, &key.key_id)) 1115 return -EINVAL; 1116 1117 devaddr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]); 1118 key.frame_counter = nla_get_u32(info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]); 1119 1120 return ops->llsec->add_devkey(dev, devaddr, &key); 1121 } 1122 1123 int ieee802154_llsec_add_devkey(struct sk_buff *skb, struct genl_info *info) 1124 { 1125 if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) != 1126 (NLM_F_CREATE | NLM_F_EXCL)) 1127 return -EINVAL; 1128 1129 return ieee802154_nl_llsec_change(skb, info, llsec_add_devkey); 1130 } 1131 1132 static int llsec_del_devkey(struct net_device *dev, struct genl_info *info) 1133 { 1134 struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); 1135 struct ieee802154_llsec_device_key key; 1136 __le64 devaddr; 1137 1138 if (!info->attrs[IEEE802154_ATTR_HW_ADDR] || 1139 ieee802154_llsec_parse_key_id(info, &key.key_id)) 1140 return -EINVAL; 1141 1142 devaddr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]); 1143 1144 return ops->llsec->del_devkey(dev, devaddr, &key); 1145 } 1146 1147 int ieee802154_llsec_del_devkey(struct sk_buff *skb, struct genl_info *info) 1148 { 1149 return ieee802154_nl_llsec_change(skb, info, llsec_del_devkey); 1150 } 1151 1152 static int 1153 ieee802154_nl_fill_devkey(struct sk_buff *msg, u32 portid, u32 seq, 1154 __le64 devaddr, 1155 const struct ieee802154_llsec_device_key *devkey, 1156 const struct net_device *dev) 1157 { 1158 void *hdr; 1159 1160 hdr = genlmsg_put(msg, 0, seq, &nl802154_family, NLM_F_MULTI, 1161 IEEE802154_LLSEC_LIST_DEVKEY); 1162 if (!hdr) 1163 goto out; 1164 1165 if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) || 1166 nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) || 1167 nla_put_hwaddr(msg, IEEE802154_ATTR_HW_ADDR, devaddr, 1168 IEEE802154_ATTR_PAD) || 1169 nla_put_u32(msg, IEEE802154_ATTR_LLSEC_FRAME_COUNTER, 1170 devkey->frame_counter) || 1171 ieee802154_llsec_fill_key_id(msg, &devkey->key_id)) 1172 goto nla_put_failure; 1173 1174 genlmsg_end(msg, hdr); 1175 return 0; 1176 1177 nla_put_failure: 1178 genlmsg_cancel(msg, hdr); 1179 out: 1180 return -EMSGSIZE; 1181 } 1182 1183 static int llsec_iter_devkeys(struct llsec_dump_data *data) 1184 { 1185 struct ieee802154_llsec_device *dpos; 1186 struct ieee802154_llsec_device_key *kpos; 1187 int rc = 0, idx = 0, idx2; 1188 1189 list_for_each_entry(dpos, &data->table->devices, list) { 1190 if (idx++ < data->s_idx) 1191 continue; 1192 1193 idx2 = 0; 1194 1195 list_for_each_entry(kpos, &dpos->keys, list) { 1196 if (idx2++ < data->s_idx2) 1197 continue; 1198 1199 if (ieee802154_nl_fill_devkey(data->skb, data->portid, 1200 data->nlmsg_seq, 1201 dpos->hwaddr, kpos, 1202 data->dev)) { 1203 return rc = -EMSGSIZE; 1204 } 1205 1206 data->s_idx2++; 1207 } 1208 1209 data->s_idx++; 1210 } 1211 1212 return rc; 1213 } 1214 1215 int ieee802154_llsec_dump_devkeys(struct sk_buff *skb, 1216 struct netlink_callback *cb) 1217 { 1218 return ieee802154_llsec_dump_table(skb, cb, llsec_iter_devkeys); 1219 } 1220 1221 static int 1222 llsec_parse_seclevel(struct genl_info *info, 1223 struct ieee802154_llsec_seclevel *sl) 1224 { 1225 memset(sl, 0, sizeof(*sl)); 1226 1227 if (!info->attrs[IEEE802154_ATTR_LLSEC_FRAME_TYPE] || 1228 !info->attrs[IEEE802154_ATTR_LLSEC_SECLEVELS] || 1229 !info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE]) 1230 return -EINVAL; 1231 1232 sl->frame_type = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_FRAME_TYPE]); 1233 if (sl->frame_type == IEEE802154_FC_TYPE_MAC_CMD) { 1234 if (!info->attrs[IEEE802154_ATTR_LLSEC_CMD_FRAME_ID]) 1235 return -EINVAL; 1236 1237 sl->cmd_frame_id = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_CMD_FRAME_ID]); 1238 } 1239 1240 sl->sec_levels = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_SECLEVELS]); 1241 sl->device_override = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE]); 1242 1243 return 0; 1244 } 1245 1246 static int llsec_add_seclevel(struct net_device *dev, struct genl_info *info) 1247 { 1248 struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); 1249 struct ieee802154_llsec_seclevel sl; 1250 1251 if (llsec_parse_seclevel(info, &sl)) 1252 return -EINVAL; 1253 1254 return ops->llsec->add_seclevel(dev, &sl); 1255 } 1256 1257 int ieee802154_llsec_add_seclevel(struct sk_buff *skb, struct genl_info *info) 1258 { 1259 if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) != 1260 (NLM_F_CREATE | NLM_F_EXCL)) 1261 return -EINVAL; 1262 1263 return ieee802154_nl_llsec_change(skb, info, llsec_add_seclevel); 1264 } 1265 1266 static int llsec_del_seclevel(struct net_device *dev, struct genl_info *info) 1267 { 1268 struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); 1269 struct ieee802154_llsec_seclevel sl; 1270 1271 if (llsec_parse_seclevel(info, &sl)) 1272 return -EINVAL; 1273 1274 return ops->llsec->del_seclevel(dev, &sl); 1275 } 1276 1277 int ieee802154_llsec_del_seclevel(struct sk_buff *skb, struct genl_info *info) 1278 { 1279 return ieee802154_nl_llsec_change(skb, info, llsec_del_seclevel); 1280 } 1281 1282 static int 1283 ieee802154_nl_fill_seclevel(struct sk_buff *msg, u32 portid, u32 seq, 1284 const struct ieee802154_llsec_seclevel *sl, 1285 const struct net_device *dev) 1286 { 1287 void *hdr; 1288 1289 hdr = genlmsg_put(msg, 0, seq, &nl802154_family, NLM_F_MULTI, 1290 IEEE802154_LLSEC_LIST_SECLEVEL); 1291 if (!hdr) 1292 goto out; 1293 1294 if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) || 1295 nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) || 1296 nla_put_u8(msg, IEEE802154_ATTR_LLSEC_FRAME_TYPE, sl->frame_type) || 1297 nla_put_u8(msg, IEEE802154_ATTR_LLSEC_SECLEVELS, sl->sec_levels) || 1298 nla_put_u8(msg, IEEE802154_ATTR_LLSEC_DEV_OVERRIDE, 1299 sl->device_override)) 1300 goto nla_put_failure; 1301 1302 if (sl->frame_type == IEEE802154_FC_TYPE_MAC_CMD && 1303 nla_put_u8(msg, IEEE802154_ATTR_LLSEC_CMD_FRAME_ID, 1304 sl->cmd_frame_id)) 1305 goto nla_put_failure; 1306 1307 genlmsg_end(msg, hdr); 1308 return 0; 1309 1310 nla_put_failure: 1311 genlmsg_cancel(msg, hdr); 1312 out: 1313 return -EMSGSIZE; 1314 } 1315 1316 static int llsec_iter_seclevels(struct llsec_dump_data *data) 1317 { 1318 struct ieee802154_llsec_seclevel *pos; 1319 int rc = 0, idx = 0; 1320 1321 list_for_each_entry(pos, &data->table->security_levels, list) { 1322 if (idx++ < data->s_idx) 1323 continue; 1324 1325 if (ieee802154_nl_fill_seclevel(data->skb, data->portid, 1326 data->nlmsg_seq, pos, 1327 data->dev)) { 1328 rc = -EMSGSIZE; 1329 break; 1330 } 1331 1332 data->s_idx++; 1333 } 1334 1335 return rc; 1336 } 1337 1338 int ieee802154_llsec_dump_seclevels(struct sk_buff *skb, 1339 struct netlink_callback *cb) 1340 { 1341 return ieee802154_llsec_dump_table(skb, cb, llsec_iter_seclevels); 1342 } 1343