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, ¶ms); 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, ¶ms); 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, ¶ms); 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 } 718