1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * 4 * Authors: 5 * Alexander Aring <aar@pengutronix.de> 6 * 7 * Based on: net/wireless/nl80211.c 8 */ 9 10 #include <linux/rtnetlink.h> 11 12 #include <net/cfg802154.h> 13 #include <net/genetlink.h> 14 #include <net/mac802154.h> 15 #include <net/netlink.h> 16 #include <net/nl802154.h> 17 #include <net/sock.h> 18 19 #include "nl802154.h" 20 #include "rdev-ops.h" 21 #include "core.h" 22 23 /* the netlink family */ 24 static struct genl_family nl802154_fam; 25 26 /* multicast groups */ 27 enum nl802154_multicast_groups { 28 NL802154_MCGRP_CONFIG, 29 NL802154_MCGRP_SCAN, 30 }; 31 32 static const struct genl_multicast_group nl802154_mcgrps[] = { 33 [NL802154_MCGRP_CONFIG] = { .name = "config", }, 34 [NL802154_MCGRP_SCAN] = { .name = "scan", }, 35 }; 36 37 /* returns ERR_PTR values */ 38 static struct wpan_dev * 39 __cfg802154_wpan_dev_from_attrs(struct net *netns, struct nlattr **attrs) 40 { 41 struct cfg802154_registered_device *rdev; 42 struct wpan_dev *result = NULL; 43 bool have_ifidx = attrs[NL802154_ATTR_IFINDEX]; 44 bool have_wpan_dev_id = attrs[NL802154_ATTR_WPAN_DEV]; 45 u64 wpan_dev_id; 46 int wpan_phy_idx = -1; 47 int ifidx = -1; 48 49 ASSERT_RTNL(); 50 51 if (!have_ifidx && !have_wpan_dev_id) 52 return ERR_PTR(-EINVAL); 53 54 if (have_ifidx) 55 ifidx = nla_get_u32(attrs[NL802154_ATTR_IFINDEX]); 56 if (have_wpan_dev_id) { 57 wpan_dev_id = nla_get_u64(attrs[NL802154_ATTR_WPAN_DEV]); 58 wpan_phy_idx = wpan_dev_id >> 32; 59 } 60 61 list_for_each_entry(rdev, &cfg802154_rdev_list, list) { 62 struct wpan_dev *wpan_dev; 63 64 if (wpan_phy_net(&rdev->wpan_phy) != netns) 65 continue; 66 67 if (have_wpan_dev_id && rdev->wpan_phy_idx != wpan_phy_idx) 68 continue; 69 70 list_for_each_entry(wpan_dev, &rdev->wpan_dev_list, list) { 71 if (have_ifidx && wpan_dev->netdev && 72 wpan_dev->netdev->ifindex == ifidx) { 73 result = wpan_dev; 74 break; 75 } 76 if (have_wpan_dev_id && 77 wpan_dev->identifier == (u32)wpan_dev_id) { 78 result = wpan_dev; 79 break; 80 } 81 } 82 83 if (result) 84 break; 85 } 86 87 if (result) 88 return result; 89 90 return ERR_PTR(-ENODEV); 91 } 92 93 static struct cfg802154_registered_device * 94 __cfg802154_rdev_from_attrs(struct net *netns, struct nlattr **attrs) 95 { 96 struct cfg802154_registered_device *rdev = NULL, *tmp; 97 struct net_device *netdev; 98 99 ASSERT_RTNL(); 100 101 if (!attrs[NL802154_ATTR_WPAN_PHY] && 102 !attrs[NL802154_ATTR_IFINDEX] && 103 !attrs[NL802154_ATTR_WPAN_DEV]) 104 return ERR_PTR(-EINVAL); 105 106 if (attrs[NL802154_ATTR_WPAN_PHY]) 107 rdev = cfg802154_rdev_by_wpan_phy_idx( 108 nla_get_u32(attrs[NL802154_ATTR_WPAN_PHY])); 109 110 if (attrs[NL802154_ATTR_WPAN_DEV]) { 111 u64 wpan_dev_id = nla_get_u64(attrs[NL802154_ATTR_WPAN_DEV]); 112 struct wpan_dev *wpan_dev; 113 bool found = false; 114 115 tmp = cfg802154_rdev_by_wpan_phy_idx(wpan_dev_id >> 32); 116 if (tmp) { 117 /* make sure wpan_dev exists */ 118 list_for_each_entry(wpan_dev, &tmp->wpan_dev_list, list) { 119 if (wpan_dev->identifier != (u32)wpan_dev_id) 120 continue; 121 found = true; 122 break; 123 } 124 125 if (!found) 126 tmp = NULL; 127 128 if (rdev && tmp != rdev) 129 return ERR_PTR(-EINVAL); 130 rdev = tmp; 131 } 132 } 133 134 if (attrs[NL802154_ATTR_IFINDEX]) { 135 int ifindex = nla_get_u32(attrs[NL802154_ATTR_IFINDEX]); 136 137 netdev = __dev_get_by_index(netns, ifindex); 138 if (netdev) { 139 if (netdev->ieee802154_ptr) 140 tmp = wpan_phy_to_rdev( 141 netdev->ieee802154_ptr->wpan_phy); 142 else 143 tmp = NULL; 144 145 /* not wireless device -- return error */ 146 if (!tmp) 147 return ERR_PTR(-EINVAL); 148 149 /* mismatch -- return error */ 150 if (rdev && tmp != rdev) 151 return ERR_PTR(-EINVAL); 152 153 rdev = tmp; 154 } 155 } 156 157 if (!rdev) 158 return ERR_PTR(-ENODEV); 159 160 if (netns != wpan_phy_net(&rdev->wpan_phy)) 161 return ERR_PTR(-ENODEV); 162 163 return rdev; 164 } 165 166 /* This function returns a pointer to the driver 167 * that the genl_info item that is passed refers to. 168 * 169 * The result of this can be a PTR_ERR and hence must 170 * be checked with IS_ERR() for errors. 171 */ 172 static struct cfg802154_registered_device * 173 cfg802154_get_dev_from_info(struct net *netns, struct genl_info *info) 174 { 175 return __cfg802154_rdev_from_attrs(netns, info->attrs); 176 } 177 178 /* policy for the attributes */ 179 static const struct nla_policy nl802154_policy[NL802154_ATTR_MAX+1] = { 180 [NL802154_ATTR_WPAN_PHY] = { .type = NLA_U32 }, 181 [NL802154_ATTR_WPAN_PHY_NAME] = { .type = NLA_NUL_STRING, 182 .len = 20-1 }, 183 184 [NL802154_ATTR_IFINDEX] = { .type = NLA_U32 }, 185 [NL802154_ATTR_IFTYPE] = { .type = NLA_U32 }, 186 [NL802154_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, 187 188 [NL802154_ATTR_WPAN_DEV] = { .type = NLA_U64 }, 189 190 [NL802154_ATTR_PAGE] = NLA_POLICY_MAX(NLA_U8, IEEE802154_MAX_PAGE), 191 [NL802154_ATTR_CHANNEL] = NLA_POLICY_MAX(NLA_U8, IEEE802154_MAX_CHANNEL), 192 193 [NL802154_ATTR_TX_POWER] = { .type = NLA_S32, }, 194 195 [NL802154_ATTR_CCA_MODE] = { .type = NLA_U32, }, 196 [NL802154_ATTR_CCA_OPT] = { .type = NLA_U32, }, 197 [NL802154_ATTR_CCA_ED_LEVEL] = { .type = NLA_S32, }, 198 199 [NL802154_ATTR_SUPPORTED_CHANNEL] = { .type = NLA_U32, }, 200 201 [NL802154_ATTR_PAN_ID] = { .type = NLA_U16, }, 202 [NL802154_ATTR_EXTENDED_ADDR] = { .type = NLA_U64 }, 203 [NL802154_ATTR_SHORT_ADDR] = { .type = NLA_U16, }, 204 205 [NL802154_ATTR_MIN_BE] = { .type = NLA_U8, }, 206 [NL802154_ATTR_MAX_BE] = { .type = NLA_U8, }, 207 [NL802154_ATTR_MAX_CSMA_BACKOFFS] = { .type = NLA_U8, }, 208 209 [NL802154_ATTR_MAX_FRAME_RETRIES] = { .type = NLA_S8, }, 210 211 [NL802154_ATTR_LBT_MODE] = { .type = NLA_U8, }, 212 213 [NL802154_ATTR_WPAN_PHY_CAPS] = { .type = NLA_NESTED }, 214 215 [NL802154_ATTR_SUPPORTED_COMMANDS] = { .type = NLA_NESTED }, 216 217 [NL802154_ATTR_ACKREQ_DEFAULT] = { .type = NLA_U8 }, 218 219 [NL802154_ATTR_PID] = { .type = NLA_U32 }, 220 [NL802154_ATTR_NETNS_FD] = { .type = NLA_U32 }, 221 222 [NL802154_ATTR_COORDINATOR] = { .type = NLA_NESTED }, 223 224 [NL802154_ATTR_SCAN_TYPE] = 225 NLA_POLICY_RANGE(NLA_U8, NL802154_SCAN_ED, NL802154_SCAN_RIT_PASSIVE), 226 [NL802154_ATTR_SCAN_CHANNELS] = 227 NLA_POLICY_MASK(NLA_U32, GENMASK(IEEE802154_MAX_CHANNEL, 0)), 228 [NL802154_ATTR_SCAN_PREAMBLE_CODES] = { .type = NLA_REJECT }, 229 [NL802154_ATTR_SCAN_MEAN_PRF] = { .type = NLA_REJECT }, 230 [NL802154_ATTR_SCAN_DURATION] = 231 NLA_POLICY_MAX(NLA_U8, IEEE802154_MAX_SCAN_DURATION), 232 [NL802154_ATTR_SCAN_DONE_REASON] = 233 NLA_POLICY_RANGE(NLA_U8, NL802154_SCAN_DONE_REASON_FINISHED, 234 NL802154_SCAN_DONE_REASON_ABORTED), 235 [NL802154_ATTR_BEACON_INTERVAL] = 236 NLA_POLICY_MAX(NLA_U8, IEEE802154_ACTIVE_SCAN_DURATION), 237 [NL802154_ATTR_MAX_ASSOCIATIONS] = { .type = NLA_U32 }, 238 [NL802154_ATTR_PEER] = { .type = NLA_NESTED }, 239 240 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL 241 [NL802154_ATTR_SEC_ENABLED] = { .type = NLA_U8, }, 242 [NL802154_ATTR_SEC_OUT_LEVEL] = { .type = NLA_U32, }, 243 [NL802154_ATTR_SEC_OUT_KEY_ID] = { .type = NLA_NESTED, }, 244 [NL802154_ATTR_SEC_FRAME_COUNTER] = { .type = NLA_U32 }, 245 246 [NL802154_ATTR_SEC_LEVEL] = { .type = NLA_NESTED }, 247 [NL802154_ATTR_SEC_DEVICE] = { .type = NLA_NESTED }, 248 [NL802154_ATTR_SEC_DEVKEY] = { .type = NLA_NESTED }, 249 [NL802154_ATTR_SEC_KEY] = { .type = NLA_NESTED }, 250 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */ 251 }; 252 253 static int 254 nl802154_prepare_wpan_dev_dump(struct sk_buff *skb, 255 struct netlink_callback *cb, 256 struct cfg802154_registered_device **rdev, 257 struct wpan_dev **wpan_dev) 258 { 259 const struct genl_dumpit_info *info = genl_dumpit_info(cb); 260 int err; 261 262 rtnl_lock(); 263 264 if (!cb->args[0]) { 265 *wpan_dev = __cfg802154_wpan_dev_from_attrs(sock_net(skb->sk), 266 info->info.attrs); 267 if (IS_ERR(*wpan_dev)) { 268 err = PTR_ERR(*wpan_dev); 269 goto out_unlock; 270 } 271 *rdev = wpan_phy_to_rdev((*wpan_dev)->wpan_phy); 272 /* 0 is the first index - add 1 to parse only once */ 273 cb->args[0] = (*rdev)->wpan_phy_idx + 1; 274 cb->args[1] = (*wpan_dev)->identifier; 275 } else { 276 /* subtract the 1 again here */ 277 struct wpan_phy *wpan_phy = wpan_phy_idx_to_wpan_phy(cb->args[0] - 1); 278 struct wpan_dev *tmp; 279 280 if (!wpan_phy) { 281 err = -ENODEV; 282 goto out_unlock; 283 } 284 *rdev = wpan_phy_to_rdev(wpan_phy); 285 *wpan_dev = NULL; 286 287 list_for_each_entry(tmp, &(*rdev)->wpan_dev_list, list) { 288 if (tmp->identifier == cb->args[1]) { 289 *wpan_dev = tmp; 290 break; 291 } 292 } 293 294 if (!*wpan_dev) { 295 err = -ENODEV; 296 goto out_unlock; 297 } 298 } 299 300 return 0; 301 out_unlock: 302 rtnl_unlock(); 303 return err; 304 } 305 306 static void 307 nl802154_finish_wpan_dev_dump(struct cfg802154_registered_device *rdev) 308 { 309 rtnl_unlock(); 310 } 311 312 /* message building helper */ 313 static inline void *nl802154hdr_put(struct sk_buff *skb, u32 portid, u32 seq, 314 int flags, u8 cmd) 315 { 316 /* since there is no private header just add the generic one */ 317 return genlmsg_put(skb, portid, seq, &nl802154_fam, flags, cmd); 318 } 319 320 static int 321 nl802154_put_flags(struct sk_buff *msg, int attr, u32 mask) 322 { 323 struct nlattr *nl_flags = nla_nest_start_noflag(msg, attr); 324 int i; 325 326 if (!nl_flags) 327 return -ENOBUFS; 328 329 i = 0; 330 while (mask) { 331 if ((mask & 1) && nla_put_flag(msg, i)) 332 return -ENOBUFS; 333 334 mask >>= 1; 335 i++; 336 } 337 338 nla_nest_end(msg, nl_flags); 339 return 0; 340 } 341 342 static int 343 nl802154_send_wpan_phy_channels(struct cfg802154_registered_device *rdev, 344 struct sk_buff *msg) 345 { 346 struct nlattr *nl_page; 347 unsigned long page; 348 349 nl_page = nla_nest_start_noflag(msg, NL802154_ATTR_CHANNELS_SUPPORTED); 350 if (!nl_page) 351 return -ENOBUFS; 352 353 for (page = 0; page <= IEEE802154_MAX_PAGE; page++) { 354 if (nla_put_u32(msg, NL802154_ATTR_SUPPORTED_CHANNEL, 355 rdev->wpan_phy.supported.channels[page])) 356 return -ENOBUFS; 357 } 358 nla_nest_end(msg, nl_page); 359 360 return 0; 361 } 362 363 static int 364 nl802154_put_capabilities(struct sk_buff *msg, 365 struct cfg802154_registered_device *rdev) 366 { 367 const struct wpan_phy_supported *caps = &rdev->wpan_phy.supported; 368 struct nlattr *nl_caps, *nl_channels; 369 int i; 370 371 nl_caps = nla_nest_start_noflag(msg, NL802154_ATTR_WPAN_PHY_CAPS); 372 if (!nl_caps) 373 return -ENOBUFS; 374 375 nl_channels = nla_nest_start_noflag(msg, NL802154_CAP_ATTR_CHANNELS); 376 if (!nl_channels) 377 return -ENOBUFS; 378 379 for (i = 0; i <= IEEE802154_MAX_PAGE; i++) { 380 if (caps->channels[i]) { 381 if (nl802154_put_flags(msg, i, caps->channels[i])) 382 return -ENOBUFS; 383 } 384 } 385 386 nla_nest_end(msg, nl_channels); 387 388 if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL) { 389 struct nlattr *nl_ed_lvls; 390 391 nl_ed_lvls = nla_nest_start_noflag(msg, 392 NL802154_CAP_ATTR_CCA_ED_LEVELS); 393 if (!nl_ed_lvls) 394 return -ENOBUFS; 395 396 for (i = 0; i < caps->cca_ed_levels_size; i++) { 397 if (nla_put_s32(msg, i, caps->cca_ed_levels[i])) 398 return -ENOBUFS; 399 } 400 401 nla_nest_end(msg, nl_ed_lvls); 402 } 403 404 if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER) { 405 struct nlattr *nl_tx_pwrs; 406 407 nl_tx_pwrs = nla_nest_start_noflag(msg, 408 NL802154_CAP_ATTR_TX_POWERS); 409 if (!nl_tx_pwrs) 410 return -ENOBUFS; 411 412 for (i = 0; i < caps->tx_powers_size; i++) { 413 if (nla_put_s32(msg, i, caps->tx_powers[i])) 414 return -ENOBUFS; 415 } 416 417 nla_nest_end(msg, nl_tx_pwrs); 418 } 419 420 if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE) { 421 if (nl802154_put_flags(msg, NL802154_CAP_ATTR_CCA_MODES, 422 caps->cca_modes) || 423 nl802154_put_flags(msg, NL802154_CAP_ATTR_CCA_OPTS, 424 caps->cca_opts)) 425 return -ENOBUFS; 426 } 427 428 if (nla_put_u8(msg, NL802154_CAP_ATTR_MIN_MINBE, caps->min_minbe) || 429 nla_put_u8(msg, NL802154_CAP_ATTR_MAX_MINBE, caps->max_minbe) || 430 nla_put_u8(msg, NL802154_CAP_ATTR_MIN_MAXBE, caps->min_maxbe) || 431 nla_put_u8(msg, NL802154_CAP_ATTR_MAX_MAXBE, caps->max_maxbe) || 432 nla_put_u8(msg, NL802154_CAP_ATTR_MIN_CSMA_BACKOFFS, 433 caps->min_csma_backoffs) || 434 nla_put_u8(msg, NL802154_CAP_ATTR_MAX_CSMA_BACKOFFS, 435 caps->max_csma_backoffs) || 436 nla_put_s8(msg, NL802154_CAP_ATTR_MIN_FRAME_RETRIES, 437 caps->min_frame_retries) || 438 nla_put_s8(msg, NL802154_CAP_ATTR_MAX_FRAME_RETRIES, 439 caps->max_frame_retries) || 440 nl802154_put_flags(msg, NL802154_CAP_ATTR_IFTYPES, 441 caps->iftypes) || 442 nla_put_u32(msg, NL802154_CAP_ATTR_LBT, caps->lbt)) 443 return -ENOBUFS; 444 445 nla_nest_end(msg, nl_caps); 446 447 return 0; 448 } 449 450 static int nl802154_send_wpan_phy(struct cfg802154_registered_device *rdev, 451 enum nl802154_commands cmd, 452 struct sk_buff *msg, u32 portid, u32 seq, 453 int flags) 454 { 455 struct nlattr *nl_cmds; 456 void *hdr; 457 int i; 458 459 hdr = nl802154hdr_put(msg, portid, seq, flags, cmd); 460 if (!hdr) 461 return -ENOBUFS; 462 463 if (nla_put_u32(msg, NL802154_ATTR_WPAN_PHY, rdev->wpan_phy_idx) || 464 nla_put_string(msg, NL802154_ATTR_WPAN_PHY_NAME, 465 wpan_phy_name(&rdev->wpan_phy)) || 466 nla_put_u32(msg, NL802154_ATTR_GENERATION, 467 cfg802154_rdev_list_generation)) 468 goto nla_put_failure; 469 470 if (cmd != NL802154_CMD_NEW_WPAN_PHY) 471 goto finish; 472 473 /* DUMP PHY PIB */ 474 475 /* current channel settings */ 476 if (nla_put_u8(msg, NL802154_ATTR_PAGE, 477 rdev->wpan_phy.current_page) || 478 nla_put_u8(msg, NL802154_ATTR_CHANNEL, 479 rdev->wpan_phy.current_channel)) 480 goto nla_put_failure; 481 482 /* TODO remove this behaviour, we still keep support it for a while 483 * so users can change the behaviour to the new one. 484 */ 485 if (nl802154_send_wpan_phy_channels(rdev, msg)) 486 goto nla_put_failure; 487 488 /* cca mode */ 489 if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE) { 490 if (nla_put_u32(msg, NL802154_ATTR_CCA_MODE, 491 rdev->wpan_phy.cca.mode)) 492 goto nla_put_failure; 493 494 if (rdev->wpan_phy.cca.mode == NL802154_CCA_ENERGY_CARRIER) { 495 if (nla_put_u32(msg, NL802154_ATTR_CCA_OPT, 496 rdev->wpan_phy.cca.opt)) 497 goto nla_put_failure; 498 } 499 } 500 501 if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER) { 502 if (nla_put_s32(msg, NL802154_ATTR_TX_POWER, 503 rdev->wpan_phy.transmit_power)) 504 goto nla_put_failure; 505 } 506 507 if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL) { 508 if (nla_put_s32(msg, NL802154_ATTR_CCA_ED_LEVEL, 509 rdev->wpan_phy.cca_ed_level)) 510 goto nla_put_failure; 511 } 512 513 if (nl802154_put_capabilities(msg, rdev)) 514 goto nla_put_failure; 515 516 nl_cmds = nla_nest_start_noflag(msg, NL802154_ATTR_SUPPORTED_COMMANDS); 517 if (!nl_cmds) 518 goto nla_put_failure; 519 520 i = 0; 521 #define CMD(op, n) \ 522 do { \ 523 if (rdev->ops->op) { \ 524 i++; \ 525 if (nla_put_u32(msg, i, NL802154_CMD_ ## n)) \ 526 goto nla_put_failure; \ 527 } \ 528 } while (0) 529 530 CMD(add_virtual_intf, NEW_INTERFACE); 531 CMD(del_virtual_intf, DEL_INTERFACE); 532 CMD(set_channel, SET_CHANNEL); 533 CMD(set_pan_id, SET_PAN_ID); 534 CMD(set_short_addr, SET_SHORT_ADDR); 535 CMD(set_backoff_exponent, SET_BACKOFF_EXPONENT); 536 CMD(set_max_csma_backoffs, SET_MAX_CSMA_BACKOFFS); 537 CMD(set_max_frame_retries, SET_MAX_FRAME_RETRIES); 538 CMD(set_lbt_mode, SET_LBT_MODE); 539 CMD(set_ackreq_default, SET_ACKREQ_DEFAULT); 540 541 if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER) 542 CMD(set_tx_power, SET_TX_POWER); 543 544 if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL) 545 CMD(set_cca_ed_level, SET_CCA_ED_LEVEL); 546 547 if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE) 548 CMD(set_cca_mode, SET_CCA_MODE); 549 550 #undef CMD 551 nla_nest_end(msg, nl_cmds); 552 553 finish: 554 genlmsg_end(msg, hdr); 555 return 0; 556 557 nla_put_failure: 558 genlmsg_cancel(msg, hdr); 559 return -EMSGSIZE; 560 } 561 562 struct nl802154_dump_wpan_phy_state { 563 s64 filter_wpan_phy; 564 long start; 565 566 }; 567 568 static int nl802154_dump_wpan_phy_parse(struct sk_buff *skb, 569 struct netlink_callback *cb, 570 struct nl802154_dump_wpan_phy_state *state) 571 { 572 const struct genl_dumpit_info *info = genl_dumpit_info(cb); 573 struct nlattr **tb = info->info.attrs; 574 575 if (tb[NL802154_ATTR_WPAN_PHY]) 576 state->filter_wpan_phy = nla_get_u32(tb[NL802154_ATTR_WPAN_PHY]); 577 if (tb[NL802154_ATTR_WPAN_DEV]) 578 state->filter_wpan_phy = nla_get_u64(tb[NL802154_ATTR_WPAN_DEV]) >> 32; 579 if (tb[NL802154_ATTR_IFINDEX]) { 580 struct net_device *netdev; 581 struct cfg802154_registered_device *rdev; 582 int ifidx = nla_get_u32(tb[NL802154_ATTR_IFINDEX]); 583 584 netdev = __dev_get_by_index(&init_net, ifidx); 585 if (!netdev) 586 return -ENODEV; 587 if (netdev->ieee802154_ptr) { 588 rdev = wpan_phy_to_rdev( 589 netdev->ieee802154_ptr->wpan_phy); 590 state->filter_wpan_phy = rdev->wpan_phy_idx; 591 } 592 } 593 594 return 0; 595 } 596 597 static int 598 nl802154_dump_wpan_phy(struct sk_buff *skb, struct netlink_callback *cb) 599 { 600 int idx = 0, ret; 601 struct nl802154_dump_wpan_phy_state *state = (void *)cb->args[0]; 602 struct cfg802154_registered_device *rdev; 603 604 rtnl_lock(); 605 if (!state) { 606 state = kzalloc(sizeof(*state), GFP_KERNEL); 607 if (!state) { 608 rtnl_unlock(); 609 return -ENOMEM; 610 } 611 state->filter_wpan_phy = -1; 612 ret = nl802154_dump_wpan_phy_parse(skb, cb, state); 613 if (ret) { 614 kfree(state); 615 rtnl_unlock(); 616 return ret; 617 } 618 cb->args[0] = (long)state; 619 } 620 621 list_for_each_entry(rdev, &cfg802154_rdev_list, list) { 622 if (!net_eq(wpan_phy_net(&rdev->wpan_phy), sock_net(skb->sk))) 623 continue; 624 if (++idx <= state->start) 625 continue; 626 if (state->filter_wpan_phy != -1 && 627 state->filter_wpan_phy != rdev->wpan_phy_idx) 628 continue; 629 /* attempt to fit multiple wpan_phy data chunks into the skb */ 630 ret = nl802154_send_wpan_phy(rdev, 631 NL802154_CMD_NEW_WPAN_PHY, 632 skb, 633 NETLINK_CB(cb->skb).portid, 634 cb->nlh->nlmsg_seq, NLM_F_MULTI); 635 if (ret < 0) { 636 if ((ret == -ENOBUFS || ret == -EMSGSIZE) && 637 !skb->len && cb->min_dump_alloc < 4096) { 638 cb->min_dump_alloc = 4096; 639 rtnl_unlock(); 640 return 1; 641 } 642 idx--; 643 break; 644 } 645 break; 646 } 647 rtnl_unlock(); 648 649 state->start = idx; 650 651 return skb->len; 652 } 653 654 static int nl802154_dump_wpan_phy_done(struct netlink_callback *cb) 655 { 656 kfree((void *)cb->args[0]); 657 return 0; 658 } 659 660 static int nl802154_get_wpan_phy(struct sk_buff *skb, struct genl_info *info) 661 { 662 struct sk_buff *msg; 663 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 664 665 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 666 if (!msg) 667 return -ENOMEM; 668 669 if (nl802154_send_wpan_phy(rdev, NL802154_CMD_NEW_WPAN_PHY, msg, 670 info->snd_portid, info->snd_seq, 0) < 0) { 671 nlmsg_free(msg); 672 return -ENOBUFS; 673 } 674 675 return genlmsg_reply(msg, info); 676 } 677 678 static inline u64 wpan_dev_id(struct wpan_dev *wpan_dev) 679 { 680 return (u64)wpan_dev->identifier | 681 ((u64)wpan_phy_to_rdev(wpan_dev->wpan_phy)->wpan_phy_idx << 32); 682 } 683 684 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL 685 #include <net/ieee802154_netdev.h> 686 687 static int 688 ieee802154_llsec_send_key_id(struct sk_buff *msg, 689 const struct ieee802154_llsec_key_id *desc) 690 { 691 struct nlattr *nl_dev_addr; 692 693 if (nla_put_u32(msg, NL802154_KEY_ID_ATTR_MODE, desc->mode)) 694 return -ENOBUFS; 695 696 switch (desc->mode) { 697 case NL802154_KEY_ID_MODE_IMPLICIT: 698 nl_dev_addr = nla_nest_start_noflag(msg, 699 NL802154_KEY_ID_ATTR_IMPLICIT); 700 if (!nl_dev_addr) 701 return -ENOBUFS; 702 703 if (nla_put_le16(msg, NL802154_DEV_ADDR_ATTR_PAN_ID, 704 desc->device_addr.pan_id) || 705 nla_put_u32(msg, NL802154_DEV_ADDR_ATTR_MODE, 706 desc->device_addr.mode)) 707 return -ENOBUFS; 708 709 switch (desc->device_addr.mode) { 710 case NL802154_DEV_ADDR_SHORT: 711 if (nla_put_le16(msg, NL802154_DEV_ADDR_ATTR_SHORT, 712 desc->device_addr.short_addr)) 713 return -ENOBUFS; 714 break; 715 case NL802154_DEV_ADDR_EXTENDED: 716 if (nla_put_le64(msg, NL802154_DEV_ADDR_ATTR_EXTENDED, 717 desc->device_addr.extended_addr, 718 NL802154_DEV_ADDR_ATTR_PAD)) 719 return -ENOBUFS; 720 break; 721 default: 722 /* userspace should handle unknown */ 723 break; 724 } 725 726 nla_nest_end(msg, nl_dev_addr); 727 break; 728 case NL802154_KEY_ID_MODE_INDEX: 729 break; 730 case NL802154_KEY_ID_MODE_INDEX_SHORT: 731 /* TODO renmae short_source? */ 732 if (nla_put_le32(msg, NL802154_KEY_ID_ATTR_SOURCE_SHORT, 733 desc->short_source)) 734 return -ENOBUFS; 735 break; 736 case NL802154_KEY_ID_MODE_INDEX_EXTENDED: 737 if (nla_put_le64(msg, NL802154_KEY_ID_ATTR_SOURCE_EXTENDED, 738 desc->extended_source, 739 NL802154_KEY_ID_ATTR_PAD)) 740 return -ENOBUFS; 741 break; 742 default: 743 /* userspace should handle unknown */ 744 break; 745 } 746 747 /* TODO key_id to key_idx ? Check naming */ 748 if (desc->mode != NL802154_KEY_ID_MODE_IMPLICIT) { 749 if (nla_put_u8(msg, NL802154_KEY_ID_ATTR_INDEX, desc->id)) 750 return -ENOBUFS; 751 } 752 753 return 0; 754 } 755 756 static int nl802154_get_llsec_params(struct sk_buff *msg, 757 struct cfg802154_registered_device *rdev, 758 struct wpan_dev *wpan_dev) 759 { 760 struct nlattr *nl_key_id; 761 struct ieee802154_llsec_params params; 762 int ret; 763 764 ret = rdev_get_llsec_params(rdev, wpan_dev, ¶ms); 765 if (ret < 0) 766 return ret; 767 768 if (nla_put_u8(msg, NL802154_ATTR_SEC_ENABLED, params.enabled) || 769 nla_put_u32(msg, NL802154_ATTR_SEC_OUT_LEVEL, params.out_level) || 770 nla_put_be32(msg, NL802154_ATTR_SEC_FRAME_COUNTER, 771 params.frame_counter)) 772 return -ENOBUFS; 773 774 nl_key_id = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_OUT_KEY_ID); 775 if (!nl_key_id) 776 return -ENOBUFS; 777 778 ret = ieee802154_llsec_send_key_id(msg, ¶ms.out_key); 779 if (ret < 0) 780 return ret; 781 782 nla_nest_end(msg, nl_key_id); 783 784 return 0; 785 } 786 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */ 787 788 static int 789 nl802154_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags, 790 struct cfg802154_registered_device *rdev, 791 struct wpan_dev *wpan_dev) 792 { 793 struct net_device *dev = wpan_dev->netdev; 794 void *hdr; 795 796 hdr = nl802154hdr_put(msg, portid, seq, flags, 797 NL802154_CMD_NEW_INTERFACE); 798 if (!hdr) 799 return -1; 800 801 if (dev && 802 (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex) || 803 nla_put_string(msg, NL802154_ATTR_IFNAME, dev->name))) 804 goto nla_put_failure; 805 806 if (nla_put_u32(msg, NL802154_ATTR_WPAN_PHY, rdev->wpan_phy_idx) || 807 nla_put_u32(msg, NL802154_ATTR_IFTYPE, wpan_dev->iftype) || 808 nla_put_u64_64bit(msg, NL802154_ATTR_WPAN_DEV, 809 wpan_dev_id(wpan_dev), NL802154_ATTR_PAD) || 810 nla_put_u32(msg, NL802154_ATTR_GENERATION, 811 rdev->devlist_generation ^ 812 (cfg802154_rdev_list_generation << 2))) 813 goto nla_put_failure; 814 815 /* address settings */ 816 if (nla_put_le64(msg, NL802154_ATTR_EXTENDED_ADDR, 817 wpan_dev->extended_addr, 818 NL802154_ATTR_PAD) || 819 nla_put_le16(msg, NL802154_ATTR_SHORT_ADDR, 820 wpan_dev->short_addr) || 821 nla_put_le16(msg, NL802154_ATTR_PAN_ID, wpan_dev->pan_id)) 822 goto nla_put_failure; 823 824 /* ARET handling */ 825 if (nla_put_s8(msg, NL802154_ATTR_MAX_FRAME_RETRIES, 826 wpan_dev->frame_retries) || 827 nla_put_u8(msg, NL802154_ATTR_MAX_BE, wpan_dev->max_be) || 828 nla_put_u8(msg, NL802154_ATTR_MAX_CSMA_BACKOFFS, 829 wpan_dev->csma_retries) || 830 nla_put_u8(msg, NL802154_ATTR_MIN_BE, wpan_dev->min_be)) 831 goto nla_put_failure; 832 833 /* listen before transmit */ 834 if (nla_put_u8(msg, NL802154_ATTR_LBT_MODE, wpan_dev->lbt)) 835 goto nla_put_failure; 836 837 /* ackreq default behaviour */ 838 if (nla_put_u8(msg, NL802154_ATTR_ACKREQ_DEFAULT, wpan_dev->ackreq)) 839 goto nla_put_failure; 840 841 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL 842 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) 843 goto out; 844 845 if (nl802154_get_llsec_params(msg, rdev, wpan_dev) < 0) 846 goto nla_put_failure; 847 848 out: 849 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */ 850 851 genlmsg_end(msg, hdr); 852 return 0; 853 854 nla_put_failure: 855 genlmsg_cancel(msg, hdr); 856 return -EMSGSIZE; 857 } 858 859 static int 860 nl802154_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) 861 { 862 int wp_idx = 0; 863 int if_idx = 0; 864 int wp_start = cb->args[0]; 865 int if_start = cb->args[1]; 866 struct cfg802154_registered_device *rdev; 867 struct wpan_dev *wpan_dev; 868 869 rtnl_lock(); 870 list_for_each_entry(rdev, &cfg802154_rdev_list, list) { 871 if (!net_eq(wpan_phy_net(&rdev->wpan_phy), sock_net(skb->sk))) 872 continue; 873 if (wp_idx < wp_start) { 874 wp_idx++; 875 continue; 876 } 877 if_idx = 0; 878 879 list_for_each_entry(wpan_dev, &rdev->wpan_dev_list, list) { 880 if (if_idx < if_start) { 881 if_idx++; 882 continue; 883 } 884 if (nl802154_send_iface(skb, NETLINK_CB(cb->skb).portid, 885 cb->nlh->nlmsg_seq, NLM_F_MULTI, 886 rdev, wpan_dev) < 0) { 887 goto out; 888 } 889 if_idx++; 890 } 891 892 wp_idx++; 893 } 894 out: 895 rtnl_unlock(); 896 897 cb->args[0] = wp_idx; 898 cb->args[1] = if_idx; 899 900 return skb->len; 901 } 902 903 static int nl802154_get_interface(struct sk_buff *skb, struct genl_info *info) 904 { 905 struct sk_buff *msg; 906 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 907 struct wpan_dev *wdev = info->user_ptr[1]; 908 909 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 910 if (!msg) 911 return -ENOMEM; 912 913 if (nl802154_send_iface(msg, info->snd_portid, info->snd_seq, 0, 914 rdev, wdev) < 0) { 915 nlmsg_free(msg); 916 return -ENOBUFS; 917 } 918 919 return genlmsg_reply(msg, info); 920 } 921 922 static int nl802154_new_interface(struct sk_buff *skb, struct genl_info *info) 923 { 924 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 925 enum nl802154_iftype type = NL802154_IFTYPE_UNSPEC; 926 __le64 extended_addr = cpu_to_le64(0x0000000000000000ULL); 927 928 /* TODO avoid failing a new interface 929 * creation due to pending removal? 930 */ 931 932 if (!info->attrs[NL802154_ATTR_IFNAME]) 933 return -EINVAL; 934 935 if (info->attrs[NL802154_ATTR_IFTYPE]) { 936 type = nla_get_u32(info->attrs[NL802154_ATTR_IFTYPE]); 937 if (type > NL802154_IFTYPE_MAX || 938 !(rdev->wpan_phy.supported.iftypes & BIT(type))) 939 return -EINVAL; 940 } 941 942 if (info->attrs[NL802154_ATTR_EXTENDED_ADDR]) 943 extended_addr = nla_get_le64(info->attrs[NL802154_ATTR_EXTENDED_ADDR]); 944 945 if (!rdev->ops->add_virtual_intf) 946 return -EOPNOTSUPP; 947 948 return rdev_add_virtual_intf(rdev, 949 nla_data(info->attrs[NL802154_ATTR_IFNAME]), 950 NET_NAME_USER, type, extended_addr); 951 } 952 953 static int nl802154_del_interface(struct sk_buff *skb, struct genl_info *info) 954 { 955 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 956 struct wpan_dev *wpan_dev = info->user_ptr[1]; 957 958 if (!rdev->ops->del_virtual_intf) 959 return -EOPNOTSUPP; 960 961 /* If we remove a wpan device without a netdev then clear 962 * user_ptr[1] so that nl802154_post_doit won't dereference it 963 * to check if it needs to do dev_put(). Otherwise it crashes 964 * since the wpan_dev has been freed, unlike with a netdev where 965 * we need the dev_put() for the netdev to really be freed. 966 */ 967 if (!wpan_dev->netdev) 968 info->user_ptr[1] = NULL; 969 970 return rdev_del_virtual_intf(rdev, wpan_dev); 971 } 972 973 static int nl802154_set_channel(struct sk_buff *skb, struct genl_info *info) 974 { 975 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 976 u8 channel, page; 977 978 if (!info->attrs[NL802154_ATTR_PAGE] || 979 !info->attrs[NL802154_ATTR_CHANNEL]) 980 return -EINVAL; 981 982 page = nla_get_u8(info->attrs[NL802154_ATTR_PAGE]); 983 channel = nla_get_u8(info->attrs[NL802154_ATTR_CHANNEL]); 984 985 /* check 802.15.4 constraints */ 986 if (!ieee802154_chan_is_valid(&rdev->wpan_phy, page, channel)) 987 return -EINVAL; 988 989 return rdev_set_channel(rdev, page, channel); 990 } 991 992 static int nl802154_set_cca_mode(struct sk_buff *skb, struct genl_info *info) 993 { 994 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 995 struct wpan_phy_cca cca; 996 997 if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE)) 998 return -EOPNOTSUPP; 999 1000 if (!info->attrs[NL802154_ATTR_CCA_MODE]) 1001 return -EINVAL; 1002 1003 cca.mode = nla_get_u32(info->attrs[NL802154_ATTR_CCA_MODE]); 1004 /* checking 802.15.4 constraints */ 1005 if (cca.mode < NL802154_CCA_ENERGY || 1006 cca.mode > NL802154_CCA_ATTR_MAX || 1007 !(rdev->wpan_phy.supported.cca_modes & BIT(cca.mode))) 1008 return -EINVAL; 1009 1010 if (cca.mode == NL802154_CCA_ENERGY_CARRIER) { 1011 if (!info->attrs[NL802154_ATTR_CCA_OPT]) 1012 return -EINVAL; 1013 1014 cca.opt = nla_get_u32(info->attrs[NL802154_ATTR_CCA_OPT]); 1015 if (cca.opt > NL802154_CCA_OPT_ATTR_MAX || 1016 !(rdev->wpan_phy.supported.cca_opts & BIT(cca.opt))) 1017 return -EINVAL; 1018 } 1019 1020 return rdev_set_cca_mode(rdev, &cca); 1021 } 1022 1023 static int nl802154_set_cca_ed_level(struct sk_buff *skb, struct genl_info *info) 1024 { 1025 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 1026 s32 ed_level; 1027 int i; 1028 1029 if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL)) 1030 return -EOPNOTSUPP; 1031 1032 if (!info->attrs[NL802154_ATTR_CCA_ED_LEVEL]) 1033 return -EINVAL; 1034 1035 ed_level = nla_get_s32(info->attrs[NL802154_ATTR_CCA_ED_LEVEL]); 1036 1037 for (i = 0; i < rdev->wpan_phy.supported.cca_ed_levels_size; i++) { 1038 if (ed_level == rdev->wpan_phy.supported.cca_ed_levels[i]) 1039 return rdev_set_cca_ed_level(rdev, ed_level); 1040 } 1041 1042 return -EINVAL; 1043 } 1044 1045 static int nl802154_set_tx_power(struct sk_buff *skb, struct genl_info *info) 1046 { 1047 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 1048 s32 power; 1049 int i; 1050 1051 if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER)) 1052 return -EOPNOTSUPP; 1053 1054 if (!info->attrs[NL802154_ATTR_TX_POWER]) 1055 return -EINVAL; 1056 1057 power = nla_get_s32(info->attrs[NL802154_ATTR_TX_POWER]); 1058 1059 for (i = 0; i < rdev->wpan_phy.supported.tx_powers_size; i++) { 1060 if (power == rdev->wpan_phy.supported.tx_powers[i]) 1061 return rdev_set_tx_power(rdev, power); 1062 } 1063 1064 return -EINVAL; 1065 } 1066 1067 static int nl802154_set_pan_id(struct sk_buff *skb, struct genl_info *info) 1068 { 1069 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 1070 struct net_device *dev = info->user_ptr[1]; 1071 struct wpan_dev *wpan_dev = dev->ieee802154_ptr; 1072 __le16 pan_id; 1073 1074 /* conflict here while tx/rx calls */ 1075 if (netif_running(dev)) 1076 return -EBUSY; 1077 1078 if (wpan_dev->lowpan_dev) { 1079 if (netif_running(wpan_dev->lowpan_dev)) 1080 return -EBUSY; 1081 } 1082 1083 /* don't change address fields on monitor */ 1084 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR || 1085 !info->attrs[NL802154_ATTR_PAN_ID]) 1086 return -EINVAL; 1087 1088 pan_id = nla_get_le16(info->attrs[NL802154_ATTR_PAN_ID]); 1089 1090 return rdev_set_pan_id(rdev, wpan_dev, pan_id); 1091 } 1092 1093 static int nl802154_set_short_addr(struct sk_buff *skb, struct genl_info *info) 1094 { 1095 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 1096 struct net_device *dev = info->user_ptr[1]; 1097 struct wpan_dev *wpan_dev = dev->ieee802154_ptr; 1098 __le16 short_addr; 1099 1100 /* conflict here while tx/rx calls */ 1101 if (netif_running(dev)) 1102 return -EBUSY; 1103 1104 if (wpan_dev->lowpan_dev) { 1105 if (netif_running(wpan_dev->lowpan_dev)) 1106 return -EBUSY; 1107 } 1108 1109 /* don't change address fields on monitor */ 1110 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR || 1111 !info->attrs[NL802154_ATTR_SHORT_ADDR]) 1112 return -EINVAL; 1113 1114 short_addr = nla_get_le16(info->attrs[NL802154_ATTR_SHORT_ADDR]); 1115 1116 /* TODO 1117 * I am not sure about to check here on broadcast short_addr. 1118 * Broadcast is a valid setting, comment from 802.15.4: 1119 * A value of 0xfffe indicates that the device has 1120 * associated but has not been allocated an address. A 1121 * value of 0xffff indicates that the device does not 1122 * have a short address. 1123 * 1124 * I think we should allow to set these settings but 1125 * don't allow to allow socket communication with it. 1126 */ 1127 if (short_addr == cpu_to_le16(IEEE802154_ADDR_SHORT_UNSPEC) || 1128 short_addr == cpu_to_le16(IEEE802154_ADDR_SHORT_BROADCAST)) 1129 return -EINVAL; 1130 1131 return rdev_set_short_addr(rdev, wpan_dev, short_addr); 1132 } 1133 1134 static int 1135 nl802154_set_backoff_exponent(struct sk_buff *skb, struct genl_info *info) 1136 { 1137 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 1138 struct net_device *dev = info->user_ptr[1]; 1139 struct wpan_dev *wpan_dev = dev->ieee802154_ptr; 1140 u8 min_be, max_be; 1141 1142 /* should be set on netif open inside phy settings */ 1143 if (netif_running(dev)) 1144 return -EBUSY; 1145 1146 if (!info->attrs[NL802154_ATTR_MIN_BE] || 1147 !info->attrs[NL802154_ATTR_MAX_BE]) 1148 return -EINVAL; 1149 1150 min_be = nla_get_u8(info->attrs[NL802154_ATTR_MIN_BE]); 1151 max_be = nla_get_u8(info->attrs[NL802154_ATTR_MAX_BE]); 1152 1153 /* check 802.15.4 constraints */ 1154 if (min_be < rdev->wpan_phy.supported.min_minbe || 1155 min_be > rdev->wpan_phy.supported.max_minbe || 1156 max_be < rdev->wpan_phy.supported.min_maxbe || 1157 max_be > rdev->wpan_phy.supported.max_maxbe || 1158 min_be > max_be) 1159 return -EINVAL; 1160 1161 return rdev_set_backoff_exponent(rdev, wpan_dev, min_be, max_be); 1162 } 1163 1164 static int 1165 nl802154_set_max_csma_backoffs(struct sk_buff *skb, struct genl_info *info) 1166 { 1167 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 1168 struct net_device *dev = info->user_ptr[1]; 1169 struct wpan_dev *wpan_dev = dev->ieee802154_ptr; 1170 u8 max_csma_backoffs; 1171 1172 /* conflict here while other running iface settings */ 1173 if (netif_running(dev)) 1174 return -EBUSY; 1175 1176 if (!info->attrs[NL802154_ATTR_MAX_CSMA_BACKOFFS]) 1177 return -EINVAL; 1178 1179 max_csma_backoffs = nla_get_u8( 1180 info->attrs[NL802154_ATTR_MAX_CSMA_BACKOFFS]); 1181 1182 /* check 802.15.4 constraints */ 1183 if (max_csma_backoffs < rdev->wpan_phy.supported.min_csma_backoffs || 1184 max_csma_backoffs > rdev->wpan_phy.supported.max_csma_backoffs) 1185 return -EINVAL; 1186 1187 return rdev_set_max_csma_backoffs(rdev, wpan_dev, max_csma_backoffs); 1188 } 1189 1190 static int 1191 nl802154_set_max_frame_retries(struct sk_buff *skb, struct genl_info *info) 1192 { 1193 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 1194 struct net_device *dev = info->user_ptr[1]; 1195 struct wpan_dev *wpan_dev = dev->ieee802154_ptr; 1196 s8 max_frame_retries; 1197 1198 if (netif_running(dev)) 1199 return -EBUSY; 1200 1201 if (!info->attrs[NL802154_ATTR_MAX_FRAME_RETRIES]) 1202 return -EINVAL; 1203 1204 max_frame_retries = nla_get_s8( 1205 info->attrs[NL802154_ATTR_MAX_FRAME_RETRIES]); 1206 1207 /* check 802.15.4 constraints */ 1208 if (max_frame_retries < rdev->wpan_phy.supported.min_frame_retries || 1209 max_frame_retries > rdev->wpan_phy.supported.max_frame_retries) 1210 return -EINVAL; 1211 1212 return rdev_set_max_frame_retries(rdev, wpan_dev, max_frame_retries); 1213 } 1214 1215 static int nl802154_set_lbt_mode(struct sk_buff *skb, struct genl_info *info) 1216 { 1217 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 1218 struct net_device *dev = info->user_ptr[1]; 1219 struct wpan_dev *wpan_dev = dev->ieee802154_ptr; 1220 int mode; 1221 1222 if (netif_running(dev)) 1223 return -EBUSY; 1224 1225 if (!info->attrs[NL802154_ATTR_LBT_MODE]) 1226 return -EINVAL; 1227 1228 mode = nla_get_u8(info->attrs[NL802154_ATTR_LBT_MODE]); 1229 1230 if (mode != 0 && mode != 1) 1231 return -EINVAL; 1232 1233 if (!wpan_phy_supported_bool(mode, rdev->wpan_phy.supported.lbt)) 1234 return -EINVAL; 1235 1236 return rdev_set_lbt_mode(rdev, wpan_dev, mode); 1237 } 1238 1239 static int 1240 nl802154_set_ackreq_default(struct sk_buff *skb, struct genl_info *info) 1241 { 1242 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 1243 struct net_device *dev = info->user_ptr[1]; 1244 struct wpan_dev *wpan_dev = dev->ieee802154_ptr; 1245 int ackreq; 1246 1247 if (netif_running(dev)) 1248 return -EBUSY; 1249 1250 if (!info->attrs[NL802154_ATTR_ACKREQ_DEFAULT]) 1251 return -EINVAL; 1252 1253 ackreq = nla_get_u8(info->attrs[NL802154_ATTR_ACKREQ_DEFAULT]); 1254 1255 if (ackreq != 0 && ackreq != 1) 1256 return -EINVAL; 1257 1258 return rdev_set_ackreq_default(rdev, wpan_dev, ackreq); 1259 } 1260 1261 static int nl802154_wpan_phy_netns(struct sk_buff *skb, struct genl_info *info) 1262 { 1263 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 1264 struct net *net; 1265 int err; 1266 1267 if (info->attrs[NL802154_ATTR_PID]) { 1268 u32 pid = nla_get_u32(info->attrs[NL802154_ATTR_PID]); 1269 1270 net = get_net_ns_by_pid(pid); 1271 } else if (info->attrs[NL802154_ATTR_NETNS_FD]) { 1272 u32 fd = nla_get_u32(info->attrs[NL802154_ATTR_NETNS_FD]); 1273 1274 net = get_net_ns_by_fd(fd); 1275 } else { 1276 return -EINVAL; 1277 } 1278 1279 if (IS_ERR(net)) 1280 return PTR_ERR(net); 1281 1282 err = 0; 1283 1284 /* check if anything to do */ 1285 if (!net_eq(wpan_phy_net(&rdev->wpan_phy), net)) 1286 err = cfg802154_switch_netns(rdev, net); 1287 1288 put_net(net); 1289 return err; 1290 } 1291 1292 static int nl802154_prep_scan_event_msg(struct sk_buff *msg, 1293 struct cfg802154_registered_device *rdev, 1294 struct wpan_dev *wpan_dev, 1295 u32 portid, u32 seq, int flags, u8 cmd, 1296 struct ieee802154_coord_desc *desc) 1297 { 1298 struct nlattr *nla; 1299 void *hdr; 1300 1301 hdr = nl802154hdr_put(msg, portid, seq, flags, cmd); 1302 if (!hdr) 1303 return -ENOBUFS; 1304 1305 if (nla_put_u32(msg, NL802154_ATTR_WPAN_PHY, rdev->wpan_phy_idx)) 1306 goto nla_put_failure; 1307 1308 if (wpan_dev->netdev && 1309 nla_put_u32(msg, NL802154_ATTR_IFINDEX, wpan_dev->netdev->ifindex)) 1310 goto nla_put_failure; 1311 1312 if (nla_put_u64_64bit(msg, NL802154_ATTR_WPAN_DEV, 1313 wpan_dev_id(wpan_dev), NL802154_ATTR_PAD)) 1314 goto nla_put_failure; 1315 1316 nla = nla_nest_start_noflag(msg, NL802154_ATTR_COORDINATOR); 1317 if (!nla) 1318 goto nla_put_failure; 1319 1320 if (nla_put(msg, NL802154_COORD_PANID, IEEE802154_PAN_ID_LEN, 1321 &desc->addr.pan_id)) 1322 goto nla_put_failure; 1323 1324 if (desc->addr.mode == IEEE802154_ADDR_SHORT) { 1325 if (nla_put(msg, NL802154_COORD_ADDR, 1326 IEEE802154_SHORT_ADDR_LEN, 1327 &desc->addr.short_addr)) 1328 goto nla_put_failure; 1329 } else { 1330 if (nla_put(msg, NL802154_COORD_ADDR, 1331 IEEE802154_EXTENDED_ADDR_LEN, 1332 &desc->addr.extended_addr)) 1333 goto nla_put_failure; 1334 } 1335 1336 if (nla_put_u8(msg, NL802154_COORD_CHANNEL, desc->channel)) 1337 goto nla_put_failure; 1338 1339 if (nla_put_u8(msg, NL802154_COORD_PAGE, desc->page)) 1340 goto nla_put_failure; 1341 1342 if (nla_put_u16(msg, NL802154_COORD_SUPERFRAME_SPEC, 1343 desc->superframe_spec)) 1344 goto nla_put_failure; 1345 1346 if (nla_put_u8(msg, NL802154_COORD_LINK_QUALITY, desc->link_quality)) 1347 goto nla_put_failure; 1348 1349 if (desc->gts_permit && nla_put_flag(msg, NL802154_COORD_GTS_PERMIT)) 1350 goto nla_put_failure; 1351 1352 /* TODO: NL802154_COORD_PAYLOAD_DATA if any */ 1353 1354 nla_nest_end(msg, nla); 1355 1356 genlmsg_end(msg, hdr); 1357 1358 return 0; 1359 1360 nla_put_failure: 1361 genlmsg_cancel(msg, hdr); 1362 1363 return -EMSGSIZE; 1364 } 1365 1366 int nl802154_scan_event(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev, 1367 struct ieee802154_coord_desc *desc) 1368 { 1369 struct cfg802154_registered_device *rdev = wpan_phy_to_rdev(wpan_phy); 1370 struct sk_buff *msg; 1371 int ret; 1372 1373 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 1374 if (!msg) 1375 return -ENOMEM; 1376 1377 ret = nl802154_prep_scan_event_msg(msg, rdev, wpan_dev, 0, 0, 0, 1378 NL802154_CMD_SCAN_EVENT, 1379 desc); 1380 if (ret < 0) { 1381 nlmsg_free(msg); 1382 return ret; 1383 } 1384 1385 return genlmsg_multicast_netns(&nl802154_fam, wpan_phy_net(wpan_phy), 1386 msg, 0, NL802154_MCGRP_SCAN, GFP_ATOMIC); 1387 } 1388 EXPORT_SYMBOL_GPL(nl802154_scan_event); 1389 1390 static int nl802154_trigger_scan(struct sk_buff *skb, struct genl_info *info) 1391 { 1392 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 1393 struct net_device *dev = info->user_ptr[1]; 1394 struct wpan_dev *wpan_dev = dev->ieee802154_ptr; 1395 struct wpan_phy *wpan_phy = &rdev->wpan_phy; 1396 struct cfg802154_scan_request *request; 1397 u8 type; 1398 int err; 1399 1400 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) { 1401 NL_SET_ERR_MSG(info->extack, "Monitors are not allowed to perform scans"); 1402 return -EOPNOTSUPP; 1403 } 1404 1405 if (!info->attrs[NL802154_ATTR_SCAN_TYPE]) { 1406 NL_SET_ERR_MSG(info->extack, "Malformed request, missing scan type"); 1407 return -EINVAL; 1408 } 1409 1410 if (wpan_phy->flags & WPAN_PHY_FLAG_DATAGRAMS_ONLY) { 1411 NL_SET_ERR_MSG(info->extack, "PHY only supports datagrams"); 1412 return -EOPNOTSUPP; 1413 } 1414 1415 request = kzalloc(sizeof(*request), GFP_KERNEL); 1416 if (!request) 1417 return -ENOMEM; 1418 1419 request->wpan_dev = wpan_dev; 1420 request->wpan_phy = wpan_phy; 1421 1422 type = nla_get_u8(info->attrs[NL802154_ATTR_SCAN_TYPE]); 1423 switch (type) { 1424 case NL802154_SCAN_ACTIVE: 1425 case NL802154_SCAN_PASSIVE: 1426 request->type = type; 1427 break; 1428 default: 1429 NL_SET_ERR_MSG_FMT(info->extack, "Unsupported scan type: %d", type); 1430 err = -EINVAL; 1431 goto free_request; 1432 } 1433 1434 /* Use current page by default */ 1435 if (info->attrs[NL802154_ATTR_PAGE]) 1436 request->page = nla_get_u8(info->attrs[NL802154_ATTR_PAGE]); 1437 else 1438 request->page = wpan_phy->current_page; 1439 1440 /* Scan all supported channels by default */ 1441 if (info->attrs[NL802154_ATTR_SCAN_CHANNELS]) 1442 request->channels = nla_get_u32(info->attrs[NL802154_ATTR_SCAN_CHANNELS]); 1443 else 1444 request->channels = wpan_phy->supported.channels[request->page]; 1445 1446 /* Use maximum duration order by default */ 1447 if (info->attrs[NL802154_ATTR_SCAN_DURATION]) 1448 request->duration = nla_get_u8(info->attrs[NL802154_ATTR_SCAN_DURATION]); 1449 else 1450 request->duration = IEEE802154_MAX_SCAN_DURATION; 1451 1452 err = rdev_trigger_scan(rdev, request); 1453 if (err) { 1454 pr_err("Failure starting scanning (%d)\n", err); 1455 goto free_request; 1456 } 1457 1458 return 0; 1459 1460 free_request: 1461 kfree(request); 1462 1463 return err; 1464 } 1465 1466 static int nl802154_prep_scan_msg(struct sk_buff *msg, 1467 struct cfg802154_registered_device *rdev, 1468 struct wpan_dev *wpan_dev, u32 portid, 1469 u32 seq, int flags, u8 cmd, u8 arg) 1470 { 1471 void *hdr; 1472 1473 hdr = nl802154hdr_put(msg, portid, seq, flags, cmd); 1474 if (!hdr) 1475 return -ENOBUFS; 1476 1477 if (nla_put_u32(msg, NL802154_ATTR_WPAN_PHY, rdev->wpan_phy_idx)) 1478 goto nla_put_failure; 1479 1480 if (wpan_dev->netdev && 1481 nla_put_u32(msg, NL802154_ATTR_IFINDEX, wpan_dev->netdev->ifindex)) 1482 goto nla_put_failure; 1483 1484 if (nla_put_u64_64bit(msg, NL802154_ATTR_WPAN_DEV, 1485 wpan_dev_id(wpan_dev), NL802154_ATTR_PAD)) 1486 goto nla_put_failure; 1487 1488 if (cmd == NL802154_CMD_SCAN_DONE && 1489 nla_put_u8(msg, NL802154_ATTR_SCAN_DONE_REASON, arg)) 1490 goto nla_put_failure; 1491 1492 genlmsg_end(msg, hdr); 1493 1494 return 0; 1495 1496 nla_put_failure: 1497 genlmsg_cancel(msg, hdr); 1498 1499 return -EMSGSIZE; 1500 } 1501 1502 static int nl802154_send_scan_msg(struct cfg802154_registered_device *rdev, 1503 struct wpan_dev *wpan_dev, u8 cmd, u8 arg) 1504 { 1505 struct sk_buff *msg; 1506 int ret; 1507 1508 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1509 if (!msg) 1510 return -ENOMEM; 1511 1512 ret = nl802154_prep_scan_msg(msg, rdev, wpan_dev, 0, 0, 0, cmd, arg); 1513 if (ret < 0) { 1514 nlmsg_free(msg); 1515 return ret; 1516 } 1517 1518 return genlmsg_multicast_netns(&nl802154_fam, 1519 wpan_phy_net(&rdev->wpan_phy), msg, 0, 1520 NL802154_MCGRP_SCAN, GFP_KERNEL); 1521 } 1522 1523 int nl802154_scan_started(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev) 1524 { 1525 struct cfg802154_registered_device *rdev = wpan_phy_to_rdev(wpan_phy); 1526 int err; 1527 1528 /* Ignore errors when there are no listeners */ 1529 err = nl802154_send_scan_msg(rdev, wpan_dev, NL802154_CMD_TRIGGER_SCAN, 0); 1530 if (err == -ESRCH) 1531 err = 0; 1532 1533 return err; 1534 } 1535 EXPORT_SYMBOL_GPL(nl802154_scan_started); 1536 1537 int nl802154_scan_done(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev, 1538 enum nl802154_scan_done_reasons reason) 1539 { 1540 struct cfg802154_registered_device *rdev = wpan_phy_to_rdev(wpan_phy); 1541 int err; 1542 1543 /* Ignore errors when there are no listeners */ 1544 err = nl802154_send_scan_msg(rdev, wpan_dev, NL802154_CMD_SCAN_DONE, reason); 1545 if (err == -ESRCH) 1546 err = 0; 1547 1548 return err; 1549 } 1550 EXPORT_SYMBOL_GPL(nl802154_scan_done); 1551 1552 static int nl802154_abort_scan(struct sk_buff *skb, struct genl_info *info) 1553 { 1554 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 1555 struct net_device *dev = info->user_ptr[1]; 1556 struct wpan_dev *wpan_dev = dev->ieee802154_ptr; 1557 1558 /* Resources are released in the notification helper above */ 1559 return rdev_abort_scan(rdev, wpan_dev); 1560 } 1561 1562 static int 1563 nl802154_send_beacons(struct sk_buff *skb, struct genl_info *info) 1564 { 1565 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 1566 struct net_device *dev = info->user_ptr[1]; 1567 struct wpan_dev *wpan_dev = dev->ieee802154_ptr; 1568 struct wpan_phy *wpan_phy = &rdev->wpan_phy; 1569 struct cfg802154_beacon_request *request; 1570 int err; 1571 1572 if (wpan_dev->iftype != NL802154_IFTYPE_COORD) { 1573 NL_SET_ERR_MSG(info->extack, "Only coordinators can send beacons"); 1574 return -EOPNOTSUPP; 1575 } 1576 1577 if (wpan_dev->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST)) { 1578 NL_SET_ERR_MSG(info->extack, "Device is not part of any PAN"); 1579 return -EPERM; 1580 } 1581 1582 if (wpan_phy->flags & WPAN_PHY_FLAG_DATAGRAMS_ONLY) { 1583 NL_SET_ERR_MSG(info->extack, "PHY only supports datagrams"); 1584 return -EOPNOTSUPP; 1585 } 1586 1587 request = kzalloc(sizeof(*request), GFP_KERNEL); 1588 if (!request) 1589 return -ENOMEM; 1590 1591 request->wpan_dev = wpan_dev; 1592 request->wpan_phy = wpan_phy; 1593 1594 /* Use maximum duration order by default */ 1595 if (info->attrs[NL802154_ATTR_BEACON_INTERVAL]) 1596 request->interval = nla_get_u8(info->attrs[NL802154_ATTR_BEACON_INTERVAL]); 1597 else 1598 request->interval = IEEE802154_MAX_SCAN_DURATION; 1599 1600 err = rdev_send_beacons(rdev, request); 1601 if (err) { 1602 pr_err("Failure starting sending beacons (%d)\n", err); 1603 goto free_request; 1604 } 1605 1606 return 0; 1607 1608 free_request: 1609 kfree(request); 1610 1611 return err; 1612 } 1613 1614 void nl802154_beaconing_done(struct wpan_dev *wpan_dev) 1615 { 1616 /* NOP */ 1617 } 1618 EXPORT_SYMBOL_GPL(nl802154_beaconing_done); 1619 1620 static int 1621 nl802154_stop_beacons(struct sk_buff *skb, struct genl_info *info) 1622 { 1623 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 1624 struct net_device *dev = info->user_ptr[1]; 1625 struct wpan_dev *wpan_dev = dev->ieee802154_ptr; 1626 1627 /* Resources are released in the notification helper above */ 1628 return rdev_stop_beacons(rdev, wpan_dev); 1629 } 1630 1631 static int nl802154_associate(struct sk_buff *skb, struct genl_info *info) 1632 { 1633 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 1634 struct net_device *dev = info->user_ptr[1]; 1635 struct wpan_dev *wpan_dev; 1636 struct wpan_phy *wpan_phy; 1637 struct ieee802154_addr coord; 1638 int err; 1639 1640 wpan_dev = dev->ieee802154_ptr; 1641 wpan_phy = &rdev->wpan_phy; 1642 1643 if (wpan_phy->flags & WPAN_PHY_FLAG_DATAGRAMS_ONLY) { 1644 NL_SET_ERR_MSG(info->extack, "PHY only supports datagrams"); 1645 return -EOPNOTSUPP; 1646 } 1647 1648 if (!info->attrs[NL802154_ATTR_PAN_ID] || 1649 !info->attrs[NL802154_ATTR_EXTENDED_ADDR]) 1650 return -EINVAL; 1651 1652 coord.pan_id = nla_get_le16(info->attrs[NL802154_ATTR_PAN_ID]); 1653 coord.mode = IEEE802154_ADDR_LONG; 1654 coord.extended_addr = nla_get_le64(info->attrs[NL802154_ATTR_EXTENDED_ADDR]); 1655 1656 mutex_lock(&wpan_dev->association_lock); 1657 err = rdev_associate(rdev, wpan_dev, &coord); 1658 mutex_unlock(&wpan_dev->association_lock); 1659 if (err) 1660 pr_err("Association with PAN ID 0x%x failed (%d)\n", 1661 le16_to_cpu(coord.pan_id), err); 1662 1663 return err; 1664 } 1665 1666 static int nl802154_disassociate(struct sk_buff *skb, struct genl_info *info) 1667 { 1668 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 1669 struct net_device *dev = info->user_ptr[1]; 1670 struct wpan_dev *wpan_dev = dev->ieee802154_ptr; 1671 struct wpan_phy *wpan_phy = &rdev->wpan_phy; 1672 struct ieee802154_addr target; 1673 1674 if (wpan_phy->flags & WPAN_PHY_FLAG_DATAGRAMS_ONLY) { 1675 NL_SET_ERR_MSG(info->extack, "PHY only supports datagrams"); 1676 return -EOPNOTSUPP; 1677 } 1678 1679 target.pan_id = wpan_dev->pan_id; 1680 1681 if (info->attrs[NL802154_ATTR_EXTENDED_ADDR]) { 1682 target.mode = IEEE802154_ADDR_LONG; 1683 target.extended_addr = nla_get_le64(info->attrs[NL802154_ATTR_EXTENDED_ADDR]); 1684 } else if (info->attrs[NL802154_ATTR_SHORT_ADDR]) { 1685 target.mode = IEEE802154_ADDR_SHORT; 1686 target.short_addr = nla_get_le16(info->attrs[NL802154_ATTR_SHORT_ADDR]); 1687 } else { 1688 NL_SET_ERR_MSG(info->extack, "Device address is missing"); 1689 return -EINVAL; 1690 } 1691 1692 mutex_lock(&wpan_dev->association_lock); 1693 rdev_disassociate(rdev, wpan_dev, &target); 1694 mutex_unlock(&wpan_dev->association_lock); 1695 1696 return 0; 1697 } 1698 1699 static int nl802154_set_max_associations(struct sk_buff *skb, struct genl_info *info) 1700 { 1701 struct net_device *dev = info->user_ptr[1]; 1702 struct wpan_dev *wpan_dev = dev->ieee802154_ptr; 1703 unsigned int max_assoc; 1704 1705 if (!info->attrs[NL802154_ATTR_MAX_ASSOCIATIONS]) { 1706 NL_SET_ERR_MSG(info->extack, "No maximum number of association given"); 1707 return -EINVAL; 1708 } 1709 1710 max_assoc = nla_get_u32(info->attrs[NL802154_ATTR_MAX_ASSOCIATIONS]); 1711 1712 mutex_lock(&wpan_dev->association_lock); 1713 cfg802154_set_max_associations(wpan_dev, max_assoc); 1714 mutex_unlock(&wpan_dev->association_lock); 1715 1716 return 0; 1717 } 1718 1719 static int nl802154_send_peer_info(struct sk_buff *msg, 1720 struct netlink_callback *cb, 1721 u32 seq, int flags, 1722 struct cfg802154_registered_device *rdev, 1723 struct wpan_dev *wpan_dev, 1724 struct ieee802154_pan_device *peer, 1725 enum nl802154_peer_type type) 1726 { 1727 struct nlattr *nla; 1728 void *hdr; 1729 1730 ASSERT_RTNL(); 1731 1732 hdr = nl802154hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 1733 NL802154_CMD_LIST_ASSOCIATIONS); 1734 if (!hdr) 1735 return -ENOBUFS; 1736 1737 genl_dump_check_consistent(cb, hdr); 1738 1739 nla = nla_nest_start_noflag(msg, NL802154_ATTR_PEER); 1740 if (!nla) 1741 goto nla_put_failure; 1742 1743 if (nla_put_u8(msg, NL802154_DEV_ADDR_ATTR_PEER_TYPE, type)) 1744 goto nla_put_failure; 1745 1746 if (nla_put_u8(msg, NL802154_DEV_ADDR_ATTR_MODE, peer->mode)) 1747 goto nla_put_failure; 1748 1749 if (nla_put(msg, NL802154_DEV_ADDR_ATTR_SHORT, 1750 IEEE802154_SHORT_ADDR_LEN, &peer->short_addr)) 1751 goto nla_put_failure; 1752 1753 if (nla_put(msg, NL802154_DEV_ADDR_ATTR_EXTENDED, 1754 IEEE802154_EXTENDED_ADDR_LEN, &peer->extended_addr)) 1755 goto nla_put_failure; 1756 1757 nla_nest_end(msg, nla); 1758 1759 genlmsg_end(msg, hdr); 1760 1761 return 0; 1762 1763 nla_put_failure: 1764 genlmsg_cancel(msg, hdr); 1765 return -EMSGSIZE; 1766 } 1767 1768 static int nl802154_list_associations(struct sk_buff *skb, 1769 struct netlink_callback *cb) 1770 { 1771 struct cfg802154_registered_device *rdev; 1772 struct ieee802154_pan_device *child; 1773 struct wpan_dev *wpan_dev; 1774 int err; 1775 1776 err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev); 1777 if (err) 1778 return err; 1779 1780 mutex_lock(&wpan_dev->association_lock); 1781 1782 if (cb->args[2]) 1783 goto out; 1784 1785 if (wpan_dev->parent) { 1786 err = nl802154_send_peer_info(skb, cb, cb->nlh->nlmsg_seq, 1787 NLM_F_MULTI, rdev, wpan_dev, 1788 wpan_dev->parent, 1789 NL802154_PEER_TYPE_PARENT); 1790 if (err < 0) 1791 goto out_err; 1792 } 1793 1794 list_for_each_entry(child, &wpan_dev->children, node) { 1795 err = nl802154_send_peer_info(skb, cb, cb->nlh->nlmsg_seq, 1796 NLM_F_MULTI, rdev, wpan_dev, 1797 child, 1798 NL802154_PEER_TYPE_CHILD); 1799 if (err < 0) 1800 goto out_err; 1801 } 1802 1803 cb->args[2] = 1; 1804 out: 1805 err = skb->len; 1806 out_err: 1807 mutex_unlock(&wpan_dev->association_lock); 1808 1809 nl802154_finish_wpan_dev_dump(rdev); 1810 1811 return err; 1812 } 1813 1814 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL 1815 static const struct nla_policy nl802154_dev_addr_policy[NL802154_DEV_ADDR_ATTR_MAX + 1] = { 1816 [NL802154_DEV_ADDR_ATTR_PAN_ID] = { .type = NLA_U16 }, 1817 [NL802154_DEV_ADDR_ATTR_MODE] = { .type = NLA_U32 }, 1818 [NL802154_DEV_ADDR_ATTR_SHORT] = { .type = NLA_U16 }, 1819 [NL802154_DEV_ADDR_ATTR_EXTENDED] = { .type = NLA_U64 }, 1820 }; 1821 1822 static int 1823 ieee802154_llsec_parse_dev_addr(struct nlattr *nla, 1824 struct ieee802154_addr *addr) 1825 { 1826 struct nlattr *attrs[NL802154_DEV_ADDR_ATTR_MAX + 1]; 1827 1828 if (!nla || nla_parse_nested_deprecated(attrs, NL802154_DEV_ADDR_ATTR_MAX, nla, nl802154_dev_addr_policy, NULL)) 1829 return -EINVAL; 1830 1831 if (!attrs[NL802154_DEV_ADDR_ATTR_PAN_ID] || !attrs[NL802154_DEV_ADDR_ATTR_MODE]) 1832 return -EINVAL; 1833 1834 addr->pan_id = nla_get_le16(attrs[NL802154_DEV_ADDR_ATTR_PAN_ID]); 1835 addr->mode = nla_get_u32(attrs[NL802154_DEV_ADDR_ATTR_MODE]); 1836 switch (addr->mode) { 1837 case NL802154_DEV_ADDR_SHORT: 1838 if (!attrs[NL802154_DEV_ADDR_ATTR_SHORT]) 1839 return -EINVAL; 1840 addr->short_addr = nla_get_le16(attrs[NL802154_DEV_ADDR_ATTR_SHORT]); 1841 break; 1842 case NL802154_DEV_ADDR_EXTENDED: 1843 if (!attrs[NL802154_DEV_ADDR_ATTR_EXTENDED]) 1844 return -EINVAL; 1845 addr->extended_addr = nla_get_le64(attrs[NL802154_DEV_ADDR_ATTR_EXTENDED]); 1846 break; 1847 default: 1848 return -EINVAL; 1849 } 1850 1851 return 0; 1852 } 1853 1854 static const struct nla_policy nl802154_key_id_policy[NL802154_KEY_ID_ATTR_MAX + 1] = { 1855 [NL802154_KEY_ID_ATTR_MODE] = { .type = NLA_U32 }, 1856 [NL802154_KEY_ID_ATTR_INDEX] = { .type = NLA_U8 }, 1857 [NL802154_KEY_ID_ATTR_IMPLICIT] = { .type = NLA_NESTED }, 1858 [NL802154_KEY_ID_ATTR_SOURCE_SHORT] = { .type = NLA_U32 }, 1859 [NL802154_KEY_ID_ATTR_SOURCE_EXTENDED] = { .type = NLA_U64 }, 1860 }; 1861 1862 static int 1863 ieee802154_llsec_parse_key_id(struct nlattr *nla, 1864 struct ieee802154_llsec_key_id *desc) 1865 { 1866 struct nlattr *attrs[NL802154_KEY_ID_ATTR_MAX + 1]; 1867 1868 if (!nla || nla_parse_nested_deprecated(attrs, NL802154_KEY_ID_ATTR_MAX, nla, nl802154_key_id_policy, NULL)) 1869 return -EINVAL; 1870 1871 if (!attrs[NL802154_KEY_ID_ATTR_MODE]) 1872 return -EINVAL; 1873 1874 desc->mode = nla_get_u32(attrs[NL802154_KEY_ID_ATTR_MODE]); 1875 switch (desc->mode) { 1876 case NL802154_KEY_ID_MODE_IMPLICIT: 1877 if (!attrs[NL802154_KEY_ID_ATTR_IMPLICIT]) 1878 return -EINVAL; 1879 1880 if (ieee802154_llsec_parse_dev_addr(attrs[NL802154_KEY_ID_ATTR_IMPLICIT], 1881 &desc->device_addr) < 0) 1882 return -EINVAL; 1883 break; 1884 case NL802154_KEY_ID_MODE_INDEX: 1885 break; 1886 case NL802154_KEY_ID_MODE_INDEX_SHORT: 1887 if (!attrs[NL802154_KEY_ID_ATTR_SOURCE_SHORT]) 1888 return -EINVAL; 1889 1890 desc->short_source = nla_get_le32(attrs[NL802154_KEY_ID_ATTR_SOURCE_SHORT]); 1891 break; 1892 case NL802154_KEY_ID_MODE_INDEX_EXTENDED: 1893 if (!attrs[NL802154_KEY_ID_ATTR_SOURCE_EXTENDED]) 1894 return -EINVAL; 1895 1896 desc->extended_source = nla_get_le64(attrs[NL802154_KEY_ID_ATTR_SOURCE_EXTENDED]); 1897 break; 1898 default: 1899 return -EINVAL; 1900 } 1901 1902 if (desc->mode != NL802154_KEY_ID_MODE_IMPLICIT) { 1903 if (!attrs[NL802154_KEY_ID_ATTR_INDEX]) 1904 return -EINVAL; 1905 1906 /* TODO change id to idx */ 1907 desc->id = nla_get_u8(attrs[NL802154_KEY_ID_ATTR_INDEX]); 1908 } 1909 1910 return 0; 1911 } 1912 1913 static int nl802154_set_llsec_params(struct sk_buff *skb, 1914 struct genl_info *info) 1915 { 1916 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 1917 struct net_device *dev = info->user_ptr[1]; 1918 struct wpan_dev *wpan_dev = dev->ieee802154_ptr; 1919 struct ieee802154_llsec_params params; 1920 u32 changed = 0; 1921 int ret; 1922 1923 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) 1924 return -EOPNOTSUPP; 1925 1926 if (info->attrs[NL802154_ATTR_SEC_ENABLED]) { 1927 u8 enabled; 1928 1929 enabled = nla_get_u8(info->attrs[NL802154_ATTR_SEC_ENABLED]); 1930 if (enabled != 0 && enabled != 1) 1931 return -EINVAL; 1932 1933 params.enabled = nla_get_u8(info->attrs[NL802154_ATTR_SEC_ENABLED]); 1934 changed |= IEEE802154_LLSEC_PARAM_ENABLED; 1935 } 1936 1937 if (info->attrs[NL802154_ATTR_SEC_OUT_KEY_ID]) { 1938 ret = ieee802154_llsec_parse_key_id(info->attrs[NL802154_ATTR_SEC_OUT_KEY_ID], 1939 ¶ms.out_key); 1940 if (ret < 0) 1941 return ret; 1942 1943 changed |= IEEE802154_LLSEC_PARAM_OUT_KEY; 1944 } 1945 1946 if (info->attrs[NL802154_ATTR_SEC_OUT_LEVEL]) { 1947 params.out_level = nla_get_u32(info->attrs[NL802154_ATTR_SEC_OUT_LEVEL]); 1948 if (params.out_level > NL802154_SECLEVEL_MAX) 1949 return -EINVAL; 1950 1951 changed |= IEEE802154_LLSEC_PARAM_OUT_LEVEL; 1952 } 1953 1954 if (info->attrs[NL802154_ATTR_SEC_FRAME_COUNTER]) { 1955 params.frame_counter = nla_get_be32(info->attrs[NL802154_ATTR_SEC_FRAME_COUNTER]); 1956 changed |= IEEE802154_LLSEC_PARAM_FRAME_COUNTER; 1957 } 1958 1959 return rdev_set_llsec_params(rdev, wpan_dev, ¶ms, changed); 1960 } 1961 1962 static int nl802154_send_key(struct sk_buff *msg, u32 cmd, u32 portid, 1963 u32 seq, int flags, 1964 struct cfg802154_registered_device *rdev, 1965 struct net_device *dev, 1966 const struct ieee802154_llsec_key_entry *key) 1967 { 1968 void *hdr; 1969 u32 commands[NL802154_CMD_FRAME_NR_IDS / 32]; 1970 struct nlattr *nl_key, *nl_key_id; 1971 1972 hdr = nl802154hdr_put(msg, portid, seq, flags, cmd); 1973 if (!hdr) 1974 return -ENOBUFS; 1975 1976 if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex)) 1977 goto nla_put_failure; 1978 1979 nl_key = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_KEY); 1980 if (!nl_key) 1981 goto nla_put_failure; 1982 1983 nl_key_id = nla_nest_start_noflag(msg, NL802154_KEY_ATTR_ID); 1984 if (!nl_key_id) 1985 goto nla_put_failure; 1986 1987 if (ieee802154_llsec_send_key_id(msg, &key->id) < 0) 1988 goto nla_put_failure; 1989 1990 nla_nest_end(msg, nl_key_id); 1991 1992 if (nla_put_u8(msg, NL802154_KEY_ATTR_USAGE_FRAMES, 1993 key->key->frame_types)) 1994 goto nla_put_failure; 1995 1996 if (key->key->frame_types & BIT(NL802154_FRAME_CMD)) { 1997 /* TODO for each nested */ 1998 memset(commands, 0, sizeof(commands)); 1999 commands[7] = key->key->cmd_frame_ids; 2000 if (nla_put(msg, NL802154_KEY_ATTR_USAGE_CMDS, 2001 sizeof(commands), commands)) 2002 goto nla_put_failure; 2003 } 2004 2005 if (nla_put(msg, NL802154_KEY_ATTR_BYTES, NL802154_KEY_SIZE, 2006 key->key->key)) 2007 goto nla_put_failure; 2008 2009 nla_nest_end(msg, nl_key); 2010 genlmsg_end(msg, hdr); 2011 2012 return 0; 2013 2014 nla_put_failure: 2015 genlmsg_cancel(msg, hdr); 2016 return -EMSGSIZE; 2017 } 2018 2019 static int 2020 nl802154_dump_llsec_key(struct sk_buff *skb, struct netlink_callback *cb) 2021 { 2022 struct cfg802154_registered_device *rdev = NULL; 2023 struct ieee802154_llsec_key_entry *key; 2024 struct ieee802154_llsec_table *table; 2025 struct wpan_dev *wpan_dev; 2026 int err; 2027 2028 err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev); 2029 if (err) 2030 return err; 2031 2032 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) { 2033 err = skb->len; 2034 goto out_err; 2035 } 2036 2037 if (!wpan_dev->netdev) { 2038 err = -EINVAL; 2039 goto out_err; 2040 } 2041 2042 rdev_lock_llsec_table(rdev, wpan_dev); 2043 rdev_get_llsec_table(rdev, wpan_dev, &table); 2044 2045 /* TODO make it like station dump */ 2046 if (cb->args[2]) 2047 goto out; 2048 2049 list_for_each_entry(key, &table->keys, list) { 2050 if (nl802154_send_key(skb, NL802154_CMD_NEW_SEC_KEY, 2051 NETLINK_CB(cb->skb).portid, 2052 cb->nlh->nlmsg_seq, NLM_F_MULTI, 2053 rdev, wpan_dev->netdev, key) < 0) { 2054 /* TODO */ 2055 err = -EIO; 2056 rdev_unlock_llsec_table(rdev, wpan_dev); 2057 goto out_err; 2058 } 2059 } 2060 2061 cb->args[2] = 1; 2062 2063 out: 2064 rdev_unlock_llsec_table(rdev, wpan_dev); 2065 err = skb->len; 2066 out_err: 2067 nl802154_finish_wpan_dev_dump(rdev); 2068 2069 return err; 2070 } 2071 2072 static const struct nla_policy nl802154_key_policy[NL802154_KEY_ATTR_MAX + 1] = { 2073 [NL802154_KEY_ATTR_ID] = { NLA_NESTED }, 2074 /* TODO handle it as for_each_nested and NLA_FLAG? */ 2075 [NL802154_KEY_ATTR_USAGE_FRAMES] = { NLA_U8 }, 2076 /* TODO handle it as for_each_nested, not static array? */ 2077 [NL802154_KEY_ATTR_USAGE_CMDS] = { .len = NL802154_CMD_FRAME_NR_IDS / 8 }, 2078 [NL802154_KEY_ATTR_BYTES] = { .len = NL802154_KEY_SIZE }, 2079 }; 2080 2081 static int nl802154_add_llsec_key(struct sk_buff *skb, struct genl_info *info) 2082 { 2083 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 2084 struct net_device *dev = info->user_ptr[1]; 2085 struct wpan_dev *wpan_dev = dev->ieee802154_ptr; 2086 struct nlattr *attrs[NL802154_KEY_ATTR_MAX + 1]; 2087 struct ieee802154_llsec_key key = { }; 2088 struct ieee802154_llsec_key_id id = { }; 2089 u32 commands[NL802154_CMD_FRAME_NR_IDS / 32] = { }; 2090 2091 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) 2092 return -EOPNOTSUPP; 2093 2094 if (!info->attrs[NL802154_ATTR_SEC_KEY] || 2095 nla_parse_nested_deprecated(attrs, NL802154_KEY_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_KEY], nl802154_key_policy, info->extack)) 2096 return -EINVAL; 2097 2098 if (!attrs[NL802154_KEY_ATTR_USAGE_FRAMES] || 2099 !attrs[NL802154_KEY_ATTR_BYTES]) 2100 return -EINVAL; 2101 2102 if (ieee802154_llsec_parse_key_id(attrs[NL802154_KEY_ATTR_ID], &id) < 0) 2103 return -ENOBUFS; 2104 2105 key.frame_types = nla_get_u8(attrs[NL802154_KEY_ATTR_USAGE_FRAMES]); 2106 if (key.frame_types > BIT(NL802154_FRAME_MAX) || 2107 ((key.frame_types & BIT(NL802154_FRAME_CMD)) && 2108 !attrs[NL802154_KEY_ATTR_USAGE_CMDS])) 2109 return -EINVAL; 2110 2111 if (attrs[NL802154_KEY_ATTR_USAGE_CMDS]) { 2112 /* TODO for each nested */ 2113 nla_memcpy(commands, attrs[NL802154_KEY_ATTR_USAGE_CMDS], 2114 NL802154_CMD_FRAME_NR_IDS / 8); 2115 2116 /* TODO understand the -EINVAL logic here? last condition */ 2117 if (commands[0] || commands[1] || commands[2] || commands[3] || 2118 commands[4] || commands[5] || commands[6] || 2119 commands[7] > BIT(NL802154_CMD_FRAME_MAX)) 2120 return -EINVAL; 2121 2122 key.cmd_frame_ids = commands[7]; 2123 } else { 2124 key.cmd_frame_ids = 0; 2125 } 2126 2127 nla_memcpy(key.key, attrs[NL802154_KEY_ATTR_BYTES], NL802154_KEY_SIZE); 2128 2129 if (ieee802154_llsec_parse_key_id(attrs[NL802154_KEY_ATTR_ID], &id) < 0) 2130 return -ENOBUFS; 2131 2132 return rdev_add_llsec_key(rdev, wpan_dev, &id, &key); 2133 } 2134 2135 static int nl802154_del_llsec_key(struct sk_buff *skb, struct genl_info *info) 2136 { 2137 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 2138 struct net_device *dev = info->user_ptr[1]; 2139 struct wpan_dev *wpan_dev = dev->ieee802154_ptr; 2140 struct nlattr *attrs[NL802154_KEY_ATTR_MAX + 1]; 2141 struct ieee802154_llsec_key_id id; 2142 2143 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) 2144 return -EOPNOTSUPP; 2145 2146 if (!info->attrs[NL802154_ATTR_SEC_KEY] || 2147 nla_parse_nested_deprecated(attrs, NL802154_KEY_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_KEY], nl802154_key_policy, info->extack)) 2148 return -EINVAL; 2149 2150 if (ieee802154_llsec_parse_key_id(attrs[NL802154_KEY_ATTR_ID], &id) < 0) 2151 return -ENOBUFS; 2152 2153 return rdev_del_llsec_key(rdev, wpan_dev, &id); 2154 } 2155 2156 static int nl802154_send_device(struct sk_buff *msg, u32 cmd, u32 portid, 2157 u32 seq, int flags, 2158 struct cfg802154_registered_device *rdev, 2159 struct net_device *dev, 2160 const struct ieee802154_llsec_device *dev_desc) 2161 { 2162 void *hdr; 2163 struct nlattr *nl_device; 2164 2165 hdr = nl802154hdr_put(msg, portid, seq, flags, cmd); 2166 if (!hdr) 2167 return -ENOBUFS; 2168 2169 if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex)) 2170 goto nla_put_failure; 2171 2172 nl_device = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_DEVICE); 2173 if (!nl_device) 2174 goto nla_put_failure; 2175 2176 if (nla_put_u32(msg, NL802154_DEV_ATTR_FRAME_COUNTER, 2177 dev_desc->frame_counter) || 2178 nla_put_le16(msg, NL802154_DEV_ATTR_PAN_ID, dev_desc->pan_id) || 2179 nla_put_le16(msg, NL802154_DEV_ATTR_SHORT_ADDR, 2180 dev_desc->short_addr) || 2181 nla_put_le64(msg, NL802154_DEV_ATTR_EXTENDED_ADDR, 2182 dev_desc->hwaddr, NL802154_DEV_ATTR_PAD) || 2183 nla_put_u8(msg, NL802154_DEV_ATTR_SECLEVEL_EXEMPT, 2184 dev_desc->seclevel_exempt) || 2185 nla_put_u32(msg, NL802154_DEV_ATTR_KEY_MODE, dev_desc->key_mode)) 2186 goto nla_put_failure; 2187 2188 nla_nest_end(msg, nl_device); 2189 genlmsg_end(msg, hdr); 2190 2191 return 0; 2192 2193 nla_put_failure: 2194 genlmsg_cancel(msg, hdr); 2195 return -EMSGSIZE; 2196 } 2197 2198 static int 2199 nl802154_dump_llsec_dev(struct sk_buff *skb, struct netlink_callback *cb) 2200 { 2201 struct cfg802154_registered_device *rdev = NULL; 2202 struct ieee802154_llsec_device *dev; 2203 struct ieee802154_llsec_table *table; 2204 struct wpan_dev *wpan_dev; 2205 int err; 2206 2207 err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev); 2208 if (err) 2209 return err; 2210 2211 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) { 2212 err = skb->len; 2213 goto out_err; 2214 } 2215 2216 if (!wpan_dev->netdev) { 2217 err = -EINVAL; 2218 goto out_err; 2219 } 2220 2221 rdev_lock_llsec_table(rdev, wpan_dev); 2222 rdev_get_llsec_table(rdev, wpan_dev, &table); 2223 2224 /* TODO make it like station dump */ 2225 if (cb->args[2]) 2226 goto out; 2227 2228 list_for_each_entry(dev, &table->devices, list) { 2229 if (nl802154_send_device(skb, NL802154_CMD_NEW_SEC_LEVEL, 2230 NETLINK_CB(cb->skb).portid, 2231 cb->nlh->nlmsg_seq, NLM_F_MULTI, 2232 rdev, wpan_dev->netdev, dev) < 0) { 2233 /* TODO */ 2234 err = -EIO; 2235 rdev_unlock_llsec_table(rdev, wpan_dev); 2236 goto out_err; 2237 } 2238 } 2239 2240 cb->args[2] = 1; 2241 2242 out: 2243 rdev_unlock_llsec_table(rdev, wpan_dev); 2244 err = skb->len; 2245 out_err: 2246 nl802154_finish_wpan_dev_dump(rdev); 2247 2248 return err; 2249 } 2250 2251 static const struct nla_policy nl802154_dev_policy[NL802154_DEV_ATTR_MAX + 1] = { 2252 [NL802154_DEV_ATTR_FRAME_COUNTER] = { NLA_U32 }, 2253 [NL802154_DEV_ATTR_PAN_ID] = { .type = NLA_U16 }, 2254 [NL802154_DEV_ATTR_SHORT_ADDR] = { .type = NLA_U16 }, 2255 [NL802154_DEV_ATTR_EXTENDED_ADDR] = { .type = NLA_U64 }, 2256 [NL802154_DEV_ATTR_SECLEVEL_EXEMPT] = { NLA_U8 }, 2257 [NL802154_DEV_ATTR_KEY_MODE] = { NLA_U32 }, 2258 }; 2259 2260 static int 2261 ieee802154_llsec_parse_device(struct nlattr *nla, 2262 struct ieee802154_llsec_device *dev) 2263 { 2264 struct nlattr *attrs[NL802154_DEV_ATTR_MAX + 1]; 2265 2266 if (!nla || nla_parse_nested_deprecated(attrs, NL802154_DEV_ATTR_MAX, nla, nl802154_dev_policy, NULL)) 2267 return -EINVAL; 2268 2269 memset(dev, 0, sizeof(*dev)); 2270 2271 if (!attrs[NL802154_DEV_ATTR_FRAME_COUNTER] || 2272 !attrs[NL802154_DEV_ATTR_PAN_ID] || 2273 !attrs[NL802154_DEV_ATTR_SHORT_ADDR] || 2274 !attrs[NL802154_DEV_ATTR_EXTENDED_ADDR] || 2275 !attrs[NL802154_DEV_ATTR_SECLEVEL_EXEMPT] || 2276 !attrs[NL802154_DEV_ATTR_KEY_MODE]) 2277 return -EINVAL; 2278 2279 /* TODO be32 */ 2280 dev->frame_counter = nla_get_u32(attrs[NL802154_DEV_ATTR_FRAME_COUNTER]); 2281 dev->pan_id = nla_get_le16(attrs[NL802154_DEV_ATTR_PAN_ID]); 2282 dev->short_addr = nla_get_le16(attrs[NL802154_DEV_ATTR_SHORT_ADDR]); 2283 /* TODO rename hwaddr to extended_addr */ 2284 dev->hwaddr = nla_get_le64(attrs[NL802154_DEV_ATTR_EXTENDED_ADDR]); 2285 dev->seclevel_exempt = nla_get_u8(attrs[NL802154_DEV_ATTR_SECLEVEL_EXEMPT]); 2286 dev->key_mode = nla_get_u32(attrs[NL802154_DEV_ATTR_KEY_MODE]); 2287 2288 if (dev->key_mode > NL802154_DEVKEY_MAX || 2289 (dev->seclevel_exempt != 0 && dev->seclevel_exempt != 1)) 2290 return -EINVAL; 2291 2292 return 0; 2293 } 2294 2295 static int nl802154_add_llsec_dev(struct sk_buff *skb, struct genl_info *info) 2296 { 2297 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 2298 struct net_device *dev = info->user_ptr[1]; 2299 struct wpan_dev *wpan_dev = dev->ieee802154_ptr; 2300 struct ieee802154_llsec_device dev_desc; 2301 2302 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) 2303 return -EOPNOTSUPP; 2304 2305 if (ieee802154_llsec_parse_device(info->attrs[NL802154_ATTR_SEC_DEVICE], 2306 &dev_desc) < 0) 2307 return -EINVAL; 2308 2309 return rdev_add_device(rdev, wpan_dev, &dev_desc); 2310 } 2311 2312 static int nl802154_del_llsec_dev(struct sk_buff *skb, struct genl_info *info) 2313 { 2314 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 2315 struct net_device *dev = info->user_ptr[1]; 2316 struct wpan_dev *wpan_dev = dev->ieee802154_ptr; 2317 struct nlattr *attrs[NL802154_DEV_ATTR_MAX + 1]; 2318 __le64 extended_addr; 2319 2320 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) 2321 return -EOPNOTSUPP; 2322 2323 if (!info->attrs[NL802154_ATTR_SEC_DEVICE] || 2324 nla_parse_nested_deprecated(attrs, NL802154_DEV_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_DEVICE], nl802154_dev_policy, info->extack)) 2325 return -EINVAL; 2326 2327 if (!attrs[NL802154_DEV_ATTR_EXTENDED_ADDR]) 2328 return -EINVAL; 2329 2330 extended_addr = nla_get_le64(attrs[NL802154_DEV_ATTR_EXTENDED_ADDR]); 2331 return rdev_del_device(rdev, wpan_dev, extended_addr); 2332 } 2333 2334 static int nl802154_send_devkey(struct sk_buff *msg, u32 cmd, u32 portid, 2335 u32 seq, int flags, 2336 struct cfg802154_registered_device *rdev, 2337 struct net_device *dev, __le64 extended_addr, 2338 const struct ieee802154_llsec_device_key *devkey) 2339 { 2340 void *hdr; 2341 struct nlattr *nl_devkey, *nl_key_id; 2342 2343 hdr = nl802154hdr_put(msg, portid, seq, flags, cmd); 2344 if (!hdr) 2345 return -ENOBUFS; 2346 2347 if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex)) 2348 goto nla_put_failure; 2349 2350 nl_devkey = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_DEVKEY); 2351 if (!nl_devkey) 2352 goto nla_put_failure; 2353 2354 if (nla_put_le64(msg, NL802154_DEVKEY_ATTR_EXTENDED_ADDR, 2355 extended_addr, NL802154_DEVKEY_ATTR_PAD) || 2356 nla_put_u32(msg, NL802154_DEVKEY_ATTR_FRAME_COUNTER, 2357 devkey->frame_counter)) 2358 goto nla_put_failure; 2359 2360 nl_key_id = nla_nest_start_noflag(msg, NL802154_DEVKEY_ATTR_ID); 2361 if (!nl_key_id) 2362 goto nla_put_failure; 2363 2364 if (ieee802154_llsec_send_key_id(msg, &devkey->key_id) < 0) 2365 goto nla_put_failure; 2366 2367 nla_nest_end(msg, nl_key_id); 2368 nla_nest_end(msg, nl_devkey); 2369 genlmsg_end(msg, hdr); 2370 2371 return 0; 2372 2373 nla_put_failure: 2374 genlmsg_cancel(msg, hdr); 2375 return -EMSGSIZE; 2376 } 2377 2378 static int 2379 nl802154_dump_llsec_devkey(struct sk_buff *skb, struct netlink_callback *cb) 2380 { 2381 struct cfg802154_registered_device *rdev = NULL; 2382 struct ieee802154_llsec_device_key *kpos; 2383 struct ieee802154_llsec_device *dpos; 2384 struct ieee802154_llsec_table *table; 2385 struct wpan_dev *wpan_dev; 2386 int err; 2387 2388 err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev); 2389 if (err) 2390 return err; 2391 2392 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) { 2393 err = skb->len; 2394 goto out_err; 2395 } 2396 2397 if (!wpan_dev->netdev) { 2398 err = -EINVAL; 2399 goto out_err; 2400 } 2401 2402 rdev_lock_llsec_table(rdev, wpan_dev); 2403 rdev_get_llsec_table(rdev, wpan_dev, &table); 2404 2405 /* TODO make it like station dump */ 2406 if (cb->args[2]) 2407 goto out; 2408 2409 /* TODO look if remove devkey and do some nested attribute */ 2410 list_for_each_entry(dpos, &table->devices, list) { 2411 list_for_each_entry(kpos, &dpos->keys, list) { 2412 if (nl802154_send_devkey(skb, 2413 NL802154_CMD_NEW_SEC_LEVEL, 2414 NETLINK_CB(cb->skb).portid, 2415 cb->nlh->nlmsg_seq, 2416 NLM_F_MULTI, rdev, 2417 wpan_dev->netdev, 2418 dpos->hwaddr, 2419 kpos) < 0) { 2420 /* TODO */ 2421 err = -EIO; 2422 rdev_unlock_llsec_table(rdev, wpan_dev); 2423 goto out_err; 2424 } 2425 } 2426 } 2427 2428 cb->args[2] = 1; 2429 2430 out: 2431 rdev_unlock_llsec_table(rdev, wpan_dev); 2432 err = skb->len; 2433 out_err: 2434 nl802154_finish_wpan_dev_dump(rdev); 2435 2436 return err; 2437 } 2438 2439 static const struct nla_policy nl802154_devkey_policy[NL802154_DEVKEY_ATTR_MAX + 1] = { 2440 [NL802154_DEVKEY_ATTR_FRAME_COUNTER] = { NLA_U32 }, 2441 [NL802154_DEVKEY_ATTR_EXTENDED_ADDR] = { NLA_U64 }, 2442 [NL802154_DEVKEY_ATTR_ID] = { NLA_NESTED }, 2443 }; 2444 2445 static int nl802154_add_llsec_devkey(struct sk_buff *skb, struct genl_info *info) 2446 { 2447 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 2448 struct net_device *dev = info->user_ptr[1]; 2449 struct wpan_dev *wpan_dev = dev->ieee802154_ptr; 2450 struct nlattr *attrs[NL802154_DEVKEY_ATTR_MAX + 1]; 2451 struct ieee802154_llsec_device_key key; 2452 __le64 extended_addr; 2453 2454 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) 2455 return -EOPNOTSUPP; 2456 2457 if (!info->attrs[NL802154_ATTR_SEC_DEVKEY] || 2458 nla_parse_nested_deprecated(attrs, NL802154_DEVKEY_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_DEVKEY], nl802154_devkey_policy, info->extack) < 0) 2459 return -EINVAL; 2460 2461 if (!attrs[NL802154_DEVKEY_ATTR_FRAME_COUNTER] || 2462 !attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR]) 2463 return -EINVAL; 2464 2465 /* TODO change key.id ? */ 2466 if (ieee802154_llsec_parse_key_id(attrs[NL802154_DEVKEY_ATTR_ID], 2467 &key.key_id) < 0) 2468 return -ENOBUFS; 2469 2470 /* TODO be32 */ 2471 key.frame_counter = nla_get_u32(attrs[NL802154_DEVKEY_ATTR_FRAME_COUNTER]); 2472 /* TODO change naming hwaddr -> extended_addr 2473 * check unique identifier short+pan OR extended_addr 2474 */ 2475 extended_addr = nla_get_le64(attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR]); 2476 return rdev_add_devkey(rdev, wpan_dev, extended_addr, &key); 2477 } 2478 2479 static int nl802154_del_llsec_devkey(struct sk_buff *skb, struct genl_info *info) 2480 { 2481 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 2482 struct net_device *dev = info->user_ptr[1]; 2483 struct wpan_dev *wpan_dev = dev->ieee802154_ptr; 2484 struct nlattr *attrs[NL802154_DEVKEY_ATTR_MAX + 1]; 2485 struct ieee802154_llsec_device_key key; 2486 __le64 extended_addr; 2487 2488 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) 2489 return -EOPNOTSUPP; 2490 2491 if (!info->attrs[NL802154_ATTR_SEC_DEVKEY] || 2492 nla_parse_nested_deprecated(attrs, NL802154_DEVKEY_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_DEVKEY], nl802154_devkey_policy, info->extack)) 2493 return -EINVAL; 2494 2495 if (!attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR]) 2496 return -EINVAL; 2497 2498 /* TODO change key.id ? */ 2499 if (ieee802154_llsec_parse_key_id(attrs[NL802154_DEVKEY_ATTR_ID], 2500 &key.key_id) < 0) 2501 return -ENOBUFS; 2502 2503 /* TODO change naming hwaddr -> extended_addr 2504 * check unique identifier short+pan OR extended_addr 2505 */ 2506 extended_addr = nla_get_le64(attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR]); 2507 return rdev_del_devkey(rdev, wpan_dev, extended_addr, &key); 2508 } 2509 2510 static int nl802154_send_seclevel(struct sk_buff *msg, u32 cmd, u32 portid, 2511 u32 seq, int flags, 2512 struct cfg802154_registered_device *rdev, 2513 struct net_device *dev, 2514 const struct ieee802154_llsec_seclevel *sl) 2515 { 2516 void *hdr; 2517 struct nlattr *nl_seclevel; 2518 2519 hdr = nl802154hdr_put(msg, portid, seq, flags, cmd); 2520 if (!hdr) 2521 return -ENOBUFS; 2522 2523 if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex)) 2524 goto nla_put_failure; 2525 2526 nl_seclevel = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_LEVEL); 2527 if (!nl_seclevel) 2528 goto nla_put_failure; 2529 2530 if (nla_put_u32(msg, NL802154_SECLEVEL_ATTR_FRAME, sl->frame_type) || 2531 nla_put_u32(msg, NL802154_SECLEVEL_ATTR_LEVELS, sl->sec_levels) || 2532 nla_put_u8(msg, NL802154_SECLEVEL_ATTR_DEV_OVERRIDE, 2533 sl->device_override)) 2534 goto nla_put_failure; 2535 2536 if (sl->frame_type == NL802154_FRAME_CMD) { 2537 if (nla_put_u32(msg, NL802154_SECLEVEL_ATTR_CMD_FRAME, 2538 sl->cmd_frame_id)) 2539 goto nla_put_failure; 2540 } 2541 2542 nla_nest_end(msg, nl_seclevel); 2543 genlmsg_end(msg, hdr); 2544 2545 return 0; 2546 2547 nla_put_failure: 2548 genlmsg_cancel(msg, hdr); 2549 return -EMSGSIZE; 2550 } 2551 2552 static int 2553 nl802154_dump_llsec_seclevel(struct sk_buff *skb, struct netlink_callback *cb) 2554 { 2555 struct cfg802154_registered_device *rdev = NULL; 2556 struct ieee802154_llsec_seclevel *sl; 2557 struct ieee802154_llsec_table *table; 2558 struct wpan_dev *wpan_dev; 2559 int err; 2560 2561 err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev); 2562 if (err) 2563 return err; 2564 2565 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) { 2566 err = skb->len; 2567 goto out_err; 2568 } 2569 2570 if (!wpan_dev->netdev) { 2571 err = -EINVAL; 2572 goto out_err; 2573 } 2574 2575 rdev_lock_llsec_table(rdev, wpan_dev); 2576 rdev_get_llsec_table(rdev, wpan_dev, &table); 2577 2578 /* TODO make it like station dump */ 2579 if (cb->args[2]) 2580 goto out; 2581 2582 list_for_each_entry(sl, &table->security_levels, list) { 2583 if (nl802154_send_seclevel(skb, NL802154_CMD_NEW_SEC_LEVEL, 2584 NETLINK_CB(cb->skb).portid, 2585 cb->nlh->nlmsg_seq, NLM_F_MULTI, 2586 rdev, wpan_dev->netdev, sl) < 0) { 2587 /* TODO */ 2588 err = -EIO; 2589 rdev_unlock_llsec_table(rdev, wpan_dev); 2590 goto out_err; 2591 } 2592 } 2593 2594 cb->args[2] = 1; 2595 2596 out: 2597 rdev_unlock_llsec_table(rdev, wpan_dev); 2598 err = skb->len; 2599 out_err: 2600 nl802154_finish_wpan_dev_dump(rdev); 2601 2602 return err; 2603 } 2604 2605 static const struct nla_policy nl802154_seclevel_policy[NL802154_SECLEVEL_ATTR_MAX + 1] = { 2606 [NL802154_SECLEVEL_ATTR_LEVELS] = { .type = NLA_U8 }, 2607 [NL802154_SECLEVEL_ATTR_FRAME] = { .type = NLA_U32 }, 2608 [NL802154_SECLEVEL_ATTR_CMD_FRAME] = { .type = NLA_U32 }, 2609 [NL802154_SECLEVEL_ATTR_DEV_OVERRIDE] = { .type = NLA_U8 }, 2610 }; 2611 2612 static int 2613 llsec_parse_seclevel(struct nlattr *nla, struct ieee802154_llsec_seclevel *sl) 2614 { 2615 struct nlattr *attrs[NL802154_SECLEVEL_ATTR_MAX + 1]; 2616 2617 if (!nla || nla_parse_nested_deprecated(attrs, NL802154_SECLEVEL_ATTR_MAX, nla, nl802154_seclevel_policy, NULL)) 2618 return -EINVAL; 2619 2620 memset(sl, 0, sizeof(*sl)); 2621 2622 if (!attrs[NL802154_SECLEVEL_ATTR_LEVELS] || 2623 !attrs[NL802154_SECLEVEL_ATTR_FRAME] || 2624 !attrs[NL802154_SECLEVEL_ATTR_DEV_OVERRIDE]) 2625 return -EINVAL; 2626 2627 sl->sec_levels = nla_get_u8(attrs[NL802154_SECLEVEL_ATTR_LEVELS]); 2628 sl->frame_type = nla_get_u32(attrs[NL802154_SECLEVEL_ATTR_FRAME]); 2629 sl->device_override = nla_get_u8(attrs[NL802154_SECLEVEL_ATTR_DEV_OVERRIDE]); 2630 if (sl->frame_type > NL802154_FRAME_MAX || 2631 (sl->device_override != 0 && sl->device_override != 1)) 2632 return -EINVAL; 2633 2634 if (sl->frame_type == NL802154_FRAME_CMD) { 2635 if (!attrs[NL802154_SECLEVEL_ATTR_CMD_FRAME]) 2636 return -EINVAL; 2637 2638 sl->cmd_frame_id = nla_get_u32(attrs[NL802154_SECLEVEL_ATTR_CMD_FRAME]); 2639 if (sl->cmd_frame_id > NL802154_CMD_FRAME_MAX) 2640 return -EINVAL; 2641 } 2642 2643 return 0; 2644 } 2645 2646 static int nl802154_add_llsec_seclevel(struct sk_buff *skb, 2647 struct genl_info *info) 2648 { 2649 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 2650 struct net_device *dev = info->user_ptr[1]; 2651 struct wpan_dev *wpan_dev = dev->ieee802154_ptr; 2652 struct ieee802154_llsec_seclevel sl; 2653 2654 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) 2655 return -EOPNOTSUPP; 2656 2657 if (llsec_parse_seclevel(info->attrs[NL802154_ATTR_SEC_LEVEL], 2658 &sl) < 0) 2659 return -EINVAL; 2660 2661 return rdev_add_seclevel(rdev, wpan_dev, &sl); 2662 } 2663 2664 static int nl802154_del_llsec_seclevel(struct sk_buff *skb, 2665 struct genl_info *info) 2666 { 2667 struct cfg802154_registered_device *rdev = info->user_ptr[0]; 2668 struct net_device *dev = info->user_ptr[1]; 2669 struct wpan_dev *wpan_dev = dev->ieee802154_ptr; 2670 struct ieee802154_llsec_seclevel sl; 2671 2672 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) 2673 return -EOPNOTSUPP; 2674 2675 if (llsec_parse_seclevel(info->attrs[NL802154_ATTR_SEC_LEVEL], 2676 &sl) < 0) 2677 return -EINVAL; 2678 2679 return rdev_del_seclevel(rdev, wpan_dev, &sl); 2680 } 2681 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */ 2682 2683 #define NL802154_FLAG_NEED_WPAN_PHY 0x01 2684 #define NL802154_FLAG_NEED_NETDEV 0x02 2685 #define NL802154_FLAG_NEED_RTNL 0x04 2686 #define NL802154_FLAG_CHECK_NETDEV_UP 0x08 2687 #define NL802154_FLAG_NEED_WPAN_DEV 0x10 2688 2689 static int nl802154_pre_doit(const struct genl_split_ops *ops, 2690 struct sk_buff *skb, 2691 struct genl_info *info) 2692 { 2693 struct cfg802154_registered_device *rdev; 2694 struct wpan_dev *wpan_dev; 2695 struct net_device *dev; 2696 bool rtnl = ops->internal_flags & NL802154_FLAG_NEED_RTNL; 2697 2698 if (rtnl) 2699 rtnl_lock(); 2700 2701 if (ops->internal_flags & NL802154_FLAG_NEED_WPAN_PHY) { 2702 rdev = cfg802154_get_dev_from_info(genl_info_net(info), info); 2703 if (IS_ERR(rdev)) { 2704 if (rtnl) 2705 rtnl_unlock(); 2706 return PTR_ERR(rdev); 2707 } 2708 info->user_ptr[0] = rdev; 2709 } else if (ops->internal_flags & NL802154_FLAG_NEED_NETDEV || 2710 ops->internal_flags & NL802154_FLAG_NEED_WPAN_DEV) { 2711 ASSERT_RTNL(); 2712 wpan_dev = __cfg802154_wpan_dev_from_attrs(genl_info_net(info), 2713 info->attrs); 2714 if (IS_ERR(wpan_dev)) { 2715 if (rtnl) 2716 rtnl_unlock(); 2717 return PTR_ERR(wpan_dev); 2718 } 2719 2720 dev = wpan_dev->netdev; 2721 rdev = wpan_phy_to_rdev(wpan_dev->wpan_phy); 2722 2723 if (ops->internal_flags & NL802154_FLAG_NEED_NETDEV) { 2724 if (!dev) { 2725 if (rtnl) 2726 rtnl_unlock(); 2727 return -EINVAL; 2728 } 2729 2730 info->user_ptr[1] = dev; 2731 } else { 2732 info->user_ptr[1] = wpan_dev; 2733 } 2734 2735 if (dev) { 2736 if (ops->internal_flags & NL802154_FLAG_CHECK_NETDEV_UP && 2737 !netif_running(dev)) { 2738 if (rtnl) 2739 rtnl_unlock(); 2740 return -ENETDOWN; 2741 } 2742 2743 dev_hold(dev); 2744 } 2745 2746 info->user_ptr[0] = rdev; 2747 } 2748 2749 return 0; 2750 } 2751 2752 static void nl802154_post_doit(const struct genl_split_ops *ops, 2753 struct sk_buff *skb, 2754 struct genl_info *info) 2755 { 2756 if (info->user_ptr[1]) { 2757 if (ops->internal_flags & NL802154_FLAG_NEED_WPAN_DEV) { 2758 struct wpan_dev *wpan_dev = info->user_ptr[1]; 2759 2760 dev_put(wpan_dev->netdev); 2761 } else { 2762 dev_put(info->user_ptr[1]); 2763 } 2764 } 2765 2766 if (ops->internal_flags & NL802154_FLAG_NEED_RTNL) 2767 rtnl_unlock(); 2768 } 2769 2770 static const struct genl_ops nl802154_ops[] = { 2771 { 2772 .cmd = NL802154_CMD_GET_WPAN_PHY, 2773 .validate = GENL_DONT_VALIDATE_STRICT | 2774 GENL_DONT_VALIDATE_DUMP_STRICT, 2775 .doit = nl802154_get_wpan_phy, 2776 .dumpit = nl802154_dump_wpan_phy, 2777 .done = nl802154_dump_wpan_phy_done, 2778 /* can be retrieved by unprivileged users */ 2779 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY | 2780 NL802154_FLAG_NEED_RTNL, 2781 }, 2782 { 2783 .cmd = NL802154_CMD_GET_INTERFACE, 2784 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2785 .doit = nl802154_get_interface, 2786 .dumpit = nl802154_dump_interface, 2787 /* can be retrieved by unprivileged users */ 2788 .internal_flags = NL802154_FLAG_NEED_WPAN_DEV | 2789 NL802154_FLAG_NEED_RTNL, 2790 }, 2791 { 2792 .cmd = NL802154_CMD_NEW_INTERFACE, 2793 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2794 .doit = nl802154_new_interface, 2795 .flags = GENL_ADMIN_PERM, 2796 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY | 2797 NL802154_FLAG_NEED_RTNL, 2798 }, 2799 { 2800 .cmd = NL802154_CMD_DEL_INTERFACE, 2801 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2802 .doit = nl802154_del_interface, 2803 .flags = GENL_ADMIN_PERM, 2804 .internal_flags = NL802154_FLAG_NEED_WPAN_DEV | 2805 NL802154_FLAG_NEED_RTNL, 2806 }, 2807 { 2808 .cmd = NL802154_CMD_SET_CHANNEL, 2809 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2810 .doit = nl802154_set_channel, 2811 .flags = GENL_ADMIN_PERM, 2812 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY | 2813 NL802154_FLAG_NEED_RTNL, 2814 }, 2815 { 2816 .cmd = NL802154_CMD_SET_CCA_MODE, 2817 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2818 .doit = nl802154_set_cca_mode, 2819 .flags = GENL_ADMIN_PERM, 2820 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY | 2821 NL802154_FLAG_NEED_RTNL, 2822 }, 2823 { 2824 .cmd = NL802154_CMD_SET_CCA_ED_LEVEL, 2825 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2826 .doit = nl802154_set_cca_ed_level, 2827 .flags = GENL_ADMIN_PERM, 2828 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY | 2829 NL802154_FLAG_NEED_RTNL, 2830 }, 2831 { 2832 .cmd = NL802154_CMD_SET_TX_POWER, 2833 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2834 .doit = nl802154_set_tx_power, 2835 .flags = GENL_ADMIN_PERM, 2836 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY | 2837 NL802154_FLAG_NEED_RTNL, 2838 }, 2839 { 2840 .cmd = NL802154_CMD_SET_WPAN_PHY_NETNS, 2841 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2842 .doit = nl802154_wpan_phy_netns, 2843 .flags = GENL_ADMIN_PERM, 2844 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY | 2845 NL802154_FLAG_NEED_RTNL, 2846 }, 2847 { 2848 .cmd = NL802154_CMD_SET_PAN_ID, 2849 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2850 .doit = nl802154_set_pan_id, 2851 .flags = GENL_ADMIN_PERM, 2852 .internal_flags = NL802154_FLAG_NEED_NETDEV | 2853 NL802154_FLAG_NEED_RTNL, 2854 }, 2855 { 2856 .cmd = NL802154_CMD_SET_SHORT_ADDR, 2857 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2858 .doit = nl802154_set_short_addr, 2859 .flags = GENL_ADMIN_PERM, 2860 .internal_flags = NL802154_FLAG_NEED_NETDEV | 2861 NL802154_FLAG_NEED_RTNL, 2862 }, 2863 { 2864 .cmd = NL802154_CMD_SET_BACKOFF_EXPONENT, 2865 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2866 .doit = nl802154_set_backoff_exponent, 2867 .flags = GENL_ADMIN_PERM, 2868 .internal_flags = NL802154_FLAG_NEED_NETDEV | 2869 NL802154_FLAG_NEED_RTNL, 2870 }, 2871 { 2872 .cmd = NL802154_CMD_SET_MAX_CSMA_BACKOFFS, 2873 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2874 .doit = nl802154_set_max_csma_backoffs, 2875 .flags = GENL_ADMIN_PERM, 2876 .internal_flags = NL802154_FLAG_NEED_NETDEV | 2877 NL802154_FLAG_NEED_RTNL, 2878 }, 2879 { 2880 .cmd = NL802154_CMD_SET_MAX_FRAME_RETRIES, 2881 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2882 .doit = nl802154_set_max_frame_retries, 2883 .flags = GENL_ADMIN_PERM, 2884 .internal_flags = NL802154_FLAG_NEED_NETDEV | 2885 NL802154_FLAG_NEED_RTNL, 2886 }, 2887 { 2888 .cmd = NL802154_CMD_SET_LBT_MODE, 2889 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2890 .doit = nl802154_set_lbt_mode, 2891 .flags = GENL_ADMIN_PERM, 2892 .internal_flags = NL802154_FLAG_NEED_NETDEV | 2893 NL802154_FLAG_NEED_RTNL, 2894 }, 2895 { 2896 .cmd = NL802154_CMD_SET_ACKREQ_DEFAULT, 2897 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2898 .doit = nl802154_set_ackreq_default, 2899 .flags = GENL_ADMIN_PERM, 2900 .internal_flags = NL802154_FLAG_NEED_NETDEV | 2901 NL802154_FLAG_NEED_RTNL, 2902 }, 2903 { 2904 .cmd = NL802154_CMD_TRIGGER_SCAN, 2905 .doit = nl802154_trigger_scan, 2906 .flags = GENL_ADMIN_PERM, 2907 .internal_flags = NL802154_FLAG_NEED_NETDEV | 2908 NL802154_FLAG_CHECK_NETDEV_UP | 2909 NL802154_FLAG_NEED_RTNL, 2910 }, 2911 { 2912 .cmd = NL802154_CMD_ABORT_SCAN, 2913 .doit = nl802154_abort_scan, 2914 .flags = GENL_ADMIN_PERM, 2915 .internal_flags = NL802154_FLAG_NEED_NETDEV | 2916 NL802154_FLAG_CHECK_NETDEV_UP | 2917 NL802154_FLAG_NEED_RTNL, 2918 }, 2919 { 2920 .cmd = NL802154_CMD_SEND_BEACONS, 2921 .doit = nl802154_send_beacons, 2922 .flags = GENL_ADMIN_PERM, 2923 .internal_flags = NL802154_FLAG_NEED_NETDEV | 2924 NL802154_FLAG_CHECK_NETDEV_UP | 2925 NL802154_FLAG_NEED_RTNL, 2926 }, 2927 { 2928 .cmd = NL802154_CMD_STOP_BEACONS, 2929 .doit = nl802154_stop_beacons, 2930 .flags = GENL_ADMIN_PERM, 2931 .internal_flags = NL802154_FLAG_NEED_NETDEV | 2932 NL802154_FLAG_CHECK_NETDEV_UP | 2933 NL802154_FLAG_NEED_RTNL, 2934 }, 2935 { 2936 .cmd = NL802154_CMD_ASSOCIATE, 2937 .doit = nl802154_associate, 2938 .flags = GENL_ADMIN_PERM, 2939 .internal_flags = NL802154_FLAG_NEED_NETDEV | 2940 NL802154_FLAG_CHECK_NETDEV_UP | 2941 NL802154_FLAG_NEED_RTNL, 2942 }, 2943 { 2944 .cmd = NL802154_CMD_DISASSOCIATE, 2945 .doit = nl802154_disassociate, 2946 .flags = GENL_ADMIN_PERM, 2947 .internal_flags = NL802154_FLAG_NEED_NETDEV | 2948 NL802154_FLAG_CHECK_NETDEV_UP | 2949 NL802154_FLAG_NEED_RTNL, 2950 }, 2951 { 2952 .cmd = NL802154_CMD_SET_MAX_ASSOCIATIONS, 2953 .doit = nl802154_set_max_associations, 2954 .flags = GENL_ADMIN_PERM, 2955 .internal_flags = NL802154_FLAG_NEED_NETDEV | 2956 NL802154_FLAG_NEED_RTNL, 2957 }, 2958 { 2959 .cmd = NL802154_CMD_LIST_ASSOCIATIONS, 2960 .dumpit = nl802154_list_associations, 2961 /* can be retrieved by unprivileged users */ 2962 }, 2963 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL 2964 { 2965 .cmd = NL802154_CMD_SET_SEC_PARAMS, 2966 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2967 .doit = nl802154_set_llsec_params, 2968 .flags = GENL_ADMIN_PERM, 2969 .internal_flags = NL802154_FLAG_NEED_NETDEV | 2970 NL802154_FLAG_NEED_RTNL, 2971 }, 2972 { 2973 .cmd = NL802154_CMD_GET_SEC_KEY, 2974 .validate = GENL_DONT_VALIDATE_STRICT | 2975 GENL_DONT_VALIDATE_DUMP_STRICT, 2976 /* TODO .doit by matching key id? */ 2977 .dumpit = nl802154_dump_llsec_key, 2978 .flags = GENL_ADMIN_PERM, 2979 .internal_flags = NL802154_FLAG_NEED_NETDEV | 2980 NL802154_FLAG_NEED_RTNL, 2981 }, 2982 { 2983 .cmd = NL802154_CMD_NEW_SEC_KEY, 2984 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2985 .doit = nl802154_add_llsec_key, 2986 .flags = GENL_ADMIN_PERM, 2987 .internal_flags = NL802154_FLAG_NEED_NETDEV | 2988 NL802154_FLAG_NEED_RTNL, 2989 }, 2990 { 2991 .cmd = NL802154_CMD_DEL_SEC_KEY, 2992 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2993 .doit = nl802154_del_llsec_key, 2994 .flags = GENL_ADMIN_PERM, 2995 .internal_flags = NL802154_FLAG_NEED_NETDEV | 2996 NL802154_FLAG_NEED_RTNL, 2997 }, 2998 /* TODO unique identifier must short+pan OR extended_addr */ 2999 { 3000 .cmd = NL802154_CMD_GET_SEC_DEV, 3001 .validate = GENL_DONT_VALIDATE_STRICT | 3002 GENL_DONT_VALIDATE_DUMP_STRICT, 3003 /* TODO .doit by matching extended_addr? */ 3004 .dumpit = nl802154_dump_llsec_dev, 3005 .flags = GENL_ADMIN_PERM, 3006 .internal_flags = NL802154_FLAG_NEED_NETDEV | 3007 NL802154_FLAG_NEED_RTNL, 3008 }, 3009 { 3010 .cmd = NL802154_CMD_NEW_SEC_DEV, 3011 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 3012 .doit = nl802154_add_llsec_dev, 3013 .flags = GENL_ADMIN_PERM, 3014 .internal_flags = NL802154_FLAG_NEED_NETDEV | 3015 NL802154_FLAG_NEED_RTNL, 3016 }, 3017 { 3018 .cmd = NL802154_CMD_DEL_SEC_DEV, 3019 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 3020 .doit = nl802154_del_llsec_dev, 3021 .flags = GENL_ADMIN_PERM, 3022 .internal_flags = NL802154_FLAG_NEED_NETDEV | 3023 NL802154_FLAG_NEED_RTNL, 3024 }, 3025 /* TODO remove complete devkey, put it as nested? */ 3026 { 3027 .cmd = NL802154_CMD_GET_SEC_DEVKEY, 3028 .validate = GENL_DONT_VALIDATE_STRICT | 3029 GENL_DONT_VALIDATE_DUMP_STRICT, 3030 /* TODO doit by matching ??? */ 3031 .dumpit = nl802154_dump_llsec_devkey, 3032 .flags = GENL_ADMIN_PERM, 3033 .internal_flags = NL802154_FLAG_NEED_NETDEV | 3034 NL802154_FLAG_NEED_RTNL, 3035 }, 3036 { 3037 .cmd = NL802154_CMD_NEW_SEC_DEVKEY, 3038 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 3039 .doit = nl802154_add_llsec_devkey, 3040 .flags = GENL_ADMIN_PERM, 3041 .internal_flags = NL802154_FLAG_NEED_NETDEV | 3042 NL802154_FLAG_NEED_RTNL, 3043 }, 3044 { 3045 .cmd = NL802154_CMD_DEL_SEC_DEVKEY, 3046 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 3047 .doit = nl802154_del_llsec_devkey, 3048 .flags = GENL_ADMIN_PERM, 3049 .internal_flags = NL802154_FLAG_NEED_NETDEV | 3050 NL802154_FLAG_NEED_RTNL, 3051 }, 3052 { 3053 .cmd = NL802154_CMD_GET_SEC_LEVEL, 3054 .validate = GENL_DONT_VALIDATE_STRICT | 3055 GENL_DONT_VALIDATE_DUMP_STRICT, 3056 /* TODO .doit by matching frame_type? */ 3057 .dumpit = nl802154_dump_llsec_seclevel, 3058 .flags = GENL_ADMIN_PERM, 3059 .internal_flags = NL802154_FLAG_NEED_NETDEV | 3060 NL802154_FLAG_NEED_RTNL, 3061 }, 3062 { 3063 .cmd = NL802154_CMD_NEW_SEC_LEVEL, 3064 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 3065 .doit = nl802154_add_llsec_seclevel, 3066 .flags = GENL_ADMIN_PERM, 3067 .internal_flags = NL802154_FLAG_NEED_NETDEV | 3068 NL802154_FLAG_NEED_RTNL, 3069 }, 3070 { 3071 .cmd = NL802154_CMD_DEL_SEC_LEVEL, 3072 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 3073 /* TODO match frame_type only? */ 3074 .doit = nl802154_del_llsec_seclevel, 3075 .flags = GENL_ADMIN_PERM, 3076 .internal_flags = NL802154_FLAG_NEED_NETDEV | 3077 NL802154_FLAG_NEED_RTNL, 3078 }, 3079 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */ 3080 }; 3081 3082 static struct genl_family nl802154_fam __ro_after_init = { 3083 .name = NL802154_GENL_NAME, /* have users key off the name instead */ 3084 .hdrsize = 0, /* no private header */ 3085 .version = 1, /* no particular meaning now */ 3086 .maxattr = NL802154_ATTR_MAX, 3087 .policy = nl802154_policy, 3088 .netnsok = true, 3089 .pre_doit = nl802154_pre_doit, 3090 .post_doit = nl802154_post_doit, 3091 .module = THIS_MODULE, 3092 .ops = nl802154_ops, 3093 .n_ops = ARRAY_SIZE(nl802154_ops), 3094 .resv_start_op = NL802154_CMD_DEL_SEC_LEVEL + 1, 3095 .mcgrps = nl802154_mcgrps, 3096 .n_mcgrps = ARRAY_SIZE(nl802154_mcgrps), 3097 }; 3098 3099 /* initialisation/exit functions */ 3100 int __init nl802154_init(void) 3101 { 3102 return genl_register_family(&nl802154_fam); 3103 } 3104 3105 void nl802154_exit(void) 3106 { 3107 genl_unregister_family(&nl802154_fam); 3108 } 3109