1 /* 2 * Driver interaction with Linux nl80211/cfg80211 3 * Copyright (c) 2002-2015, Jouni Malinen <j (at) w1.fi> 4 * Copyright (c) 2003-2004, Instant802 Networks, Inc. 5 * Copyright (c) 2005-2006, Devicescape Software, Inc. 6 * Copyright (c) 2007, Johannes Berg <johannes (at) sipsolutions.net> 7 * Copyright (c) 2009-2010, Atheros Communications 8 * 9 * This software may be distributed under the terms of the BSD license. 10 * See README for more details. 11 */ 12 13 #include "includes.h" 14 #include <sys/types.h> 15 #include <fcntl.h> 16 #include <net/if.h> 17 #include <netlink/genl/genl.h> 18 #include <netlink/genl/ctrl.h> 19 #ifdef CONFIG_LIBNL3_ROUTE 20 #include <netlink/route/neighbour.h> 21 #endif /* CONFIG_LIBNL3_ROUTE */ 22 #include <linux/rtnetlink.h> 23 #include <netpacket/packet.h> 24 #include <linux/errqueue.h> 25 26 #include "common.h" 27 #include "eloop.h" 28 #include "common/qca-vendor.h" 29 #include "common/qca-vendor-attr.h" 30 #include "common/ieee802_11_defs.h" 31 #include "common/ieee802_11_common.h" 32 #include "common/wpa_common.h" 33 #include "l2_packet/l2_packet.h" 34 #include "netlink.h" 35 #include "linux_defines.h" 36 #include "linux_ioctl.h" 37 #include "radiotap.h" 38 #include "radiotap_iter.h" 39 #include "rfkill.h" 40 #include "driver_nl80211.h" 41 42 43 #ifndef CONFIG_LIBNL20 44 /* 45 * libnl 1.1 has a bug, it tries to allocate socket numbers densely 46 * but when you free a socket again it will mess up its bitmap and 47 * and use the wrong number the next time it needs a socket ID. 48 * Therefore, we wrap the handle alloc/destroy and add our own pid 49 * accounting. 50 */ 51 static uint32_t port_bitmap[32] = { 0 }; 52 53 static struct nl_handle *nl80211_handle_alloc(void *cb) 54 { 55 struct nl_handle *handle; 56 uint32_t pid = getpid() & 0x3FFFFF; 57 int i; 58 59 handle = nl_handle_alloc_cb(cb); 60 61 for (i = 0; i < 1024; i++) { 62 if (port_bitmap[i / 32] & (1 << (i % 32))) 63 continue; 64 port_bitmap[i / 32] |= 1 << (i % 32); 65 pid += i << 22; 66 break; 67 } 68 69 nl_socket_set_local_port(handle, pid); 70 71 return handle; 72 } 73 74 static void nl80211_handle_destroy(struct nl_handle *handle) 75 { 76 uint32_t port = nl_socket_get_local_port(handle); 77 78 port >>= 22; 79 port_bitmap[port / 32] &= ~(1 << (port % 32)); 80 81 nl_handle_destroy(handle); 82 } 83 #endif /* CONFIG_LIBNL20 */ 84 85 86 #ifdef ANDROID 87 /* system/core/libnl_2 does not include nl_socket_set_nonblocking() */ 88 #undef nl_socket_set_nonblocking 89 #define nl_socket_set_nonblocking(h) android_nl_socket_set_nonblocking(h) 90 91 #endif /* ANDROID */ 92 93 94 static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg) 95 { 96 struct nl_handle *handle; 97 98 handle = nl80211_handle_alloc(cb); 99 if (handle == NULL) { 100 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 101 "callbacks (%s)", dbg); 102 return NULL; 103 } 104 105 if (genl_connect(handle)) { 106 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic " 107 "netlink (%s)", dbg); 108 nl80211_handle_destroy(handle); 109 return NULL; 110 } 111 112 return handle; 113 } 114 115 116 static void nl_destroy_handles(struct nl_handle **handle) 117 { 118 if (*handle == NULL) 119 return; 120 nl80211_handle_destroy(*handle); 121 *handle = NULL; 122 } 123 124 125 #if __WORDSIZE == 64 126 #define ELOOP_SOCKET_INVALID (intptr_t) 0x8888888888888889ULL 127 #else 128 #define ELOOP_SOCKET_INVALID (intptr_t) 0x88888889ULL 129 #endif 130 131 static void nl80211_register_eloop_read(struct nl_handle **handle, 132 eloop_sock_handler handler, 133 void *eloop_data) 134 { 135 #ifdef CONFIG_LIBNL20 136 /* 137 * libnl uses a pretty small buffer (32 kB that gets converted to 64 kB) 138 * by default. It is possible to hit that limit in some cases where 139 * operations are blocked, e.g., with a burst of Deauthentication frames 140 * to hostapd and STA entry deletion. Try to increase the buffer to make 141 * this less likely to occur. 142 */ 143 if (nl_socket_set_buffer_size(*handle, 262144, 0) < 0) { 144 wpa_printf(MSG_DEBUG, 145 "nl80211: Could not set nl_socket RX buffer size: %s", 146 strerror(errno)); 147 /* continue anyway with the default (smaller) buffer */ 148 } 149 #endif /* CONFIG_LIBNL20 */ 150 151 nl_socket_set_nonblocking(*handle); 152 eloop_register_read_sock(nl_socket_get_fd(*handle), handler, 153 eloop_data, *handle); 154 *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID); 155 } 156 157 158 static void nl80211_destroy_eloop_handle(struct nl_handle **handle) 159 { 160 *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID); 161 eloop_unregister_read_sock(nl_socket_get_fd(*handle)); 162 nl_destroy_handles(handle); 163 } 164 165 166 static void nl80211_global_deinit(void *priv); 167 static void nl80211_check_global(struct nl80211_global *global); 168 169 static void wpa_driver_nl80211_deinit(struct i802_bss *bss); 170 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss, 171 struct hostapd_freq_params *freq); 172 173 static int 174 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv, 175 const u8 *set_addr, int first, 176 const char *driver_params); 177 static int nl80211_send_frame_cmd(struct i802_bss *bss, 178 unsigned int freq, unsigned int wait, 179 const u8 *buf, size_t buf_len, u64 *cookie, 180 int no_cck, int no_ack, int offchanok, 181 const u16 *csa_offs, size_t csa_offs_len); 182 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, 183 int report); 184 185 #define IFIDX_ANY -1 186 187 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx, 188 int ifidx_reason); 189 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx, 190 int ifidx_reason); 191 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx, 192 int ifidx_reason); 193 194 static int nl80211_set_channel(struct i802_bss *bss, 195 struct hostapd_freq_params *freq, int set_chan); 196 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 197 int ifindex, int disabled); 198 199 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv, 200 int reset_mode); 201 202 static int i802_set_iface_flags(struct i802_bss *bss, int up); 203 static int nl80211_set_param(void *priv, const char *param); 204 #ifdef CONFIG_MESH 205 static int nl80211_put_mesh_config(struct nl_msg *msg, 206 struct wpa_driver_mesh_bss_params *params); 207 #endif /* CONFIG_MESH */ 208 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr, 209 int reason); 210 211 212 /* Converts nl80211_chan_width to a common format */ 213 enum chan_width convert2width(int width) 214 { 215 switch (width) { 216 case NL80211_CHAN_WIDTH_20_NOHT: 217 return CHAN_WIDTH_20_NOHT; 218 case NL80211_CHAN_WIDTH_20: 219 return CHAN_WIDTH_20; 220 case NL80211_CHAN_WIDTH_40: 221 return CHAN_WIDTH_40; 222 case NL80211_CHAN_WIDTH_80: 223 return CHAN_WIDTH_80; 224 case NL80211_CHAN_WIDTH_80P80: 225 return CHAN_WIDTH_80P80; 226 case NL80211_CHAN_WIDTH_160: 227 return CHAN_WIDTH_160; 228 } 229 return CHAN_WIDTH_UNKNOWN; 230 } 231 232 233 int is_ap_interface(enum nl80211_iftype nlmode) 234 { 235 return nlmode == NL80211_IFTYPE_AP || 236 nlmode == NL80211_IFTYPE_P2P_GO; 237 } 238 239 240 int is_sta_interface(enum nl80211_iftype nlmode) 241 { 242 return nlmode == NL80211_IFTYPE_STATION || 243 nlmode == NL80211_IFTYPE_P2P_CLIENT; 244 } 245 246 247 static int is_p2p_net_interface(enum nl80211_iftype nlmode) 248 { 249 return nlmode == NL80211_IFTYPE_P2P_CLIENT || 250 nlmode == NL80211_IFTYPE_P2P_GO; 251 } 252 253 254 struct i802_bss * get_bss_ifindex(struct wpa_driver_nl80211_data *drv, 255 int ifindex) 256 { 257 struct i802_bss *bss; 258 259 for (bss = drv->first_bss; bss; bss = bss->next) { 260 if (bss->ifindex == ifindex) 261 return bss; 262 } 263 264 return NULL; 265 } 266 267 268 static int is_mesh_interface(enum nl80211_iftype nlmode) 269 { 270 return nlmode == NL80211_IFTYPE_MESH_POINT; 271 } 272 273 274 void nl80211_mark_disconnected(struct wpa_driver_nl80211_data *drv) 275 { 276 if (drv->associated) 277 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN); 278 drv->associated = 0; 279 os_memset(drv->bssid, 0, ETH_ALEN); 280 } 281 282 283 /* nl80211 code */ 284 static int ack_handler(struct nl_msg *msg, void *arg) 285 { 286 int *err = arg; 287 *err = 0; 288 return NL_STOP; 289 } 290 291 static int finish_handler(struct nl_msg *msg, void *arg) 292 { 293 int *ret = arg; 294 *ret = 0; 295 return NL_SKIP; 296 } 297 298 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, 299 void *arg) 300 { 301 int *ret = arg; 302 *ret = err->error; 303 return NL_SKIP; 304 } 305 306 307 static int no_seq_check(struct nl_msg *msg, void *arg) 308 { 309 return NL_OK; 310 } 311 312 313 static void nl80211_nlmsg_clear(struct nl_msg *msg) 314 { 315 /* 316 * Clear nlmsg data, e.g., to make sure key material is not left in 317 * heap memory for unnecessarily long time. 318 */ 319 if (msg) { 320 struct nlmsghdr *hdr = nlmsg_hdr(msg); 321 void *data = nlmsg_data(hdr); 322 /* 323 * This would use nlmsg_datalen() or the older nlmsg_len() if 324 * only libnl were to maintain a stable API.. Neither will work 325 * with all released versions, so just calculate the length 326 * here. 327 */ 328 int len = hdr->nlmsg_len - NLMSG_HDRLEN; 329 330 os_memset(data, 0, len); 331 } 332 } 333 334 335 static int send_and_recv(struct nl80211_global *global, 336 struct nl_handle *nl_handle, struct nl_msg *msg, 337 int (*valid_handler)(struct nl_msg *, void *), 338 void *valid_data) 339 { 340 struct nl_cb *cb; 341 int err = -ENOMEM; 342 343 if (!msg) 344 return -ENOMEM; 345 346 cb = nl_cb_clone(global->nl_cb); 347 if (!cb) 348 goto out; 349 350 err = nl_send_auto_complete(nl_handle, msg); 351 if (err < 0) 352 goto out; 353 354 err = 1; 355 356 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err); 357 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err); 358 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err); 359 360 if (valid_handler) 361 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, 362 valid_handler, valid_data); 363 364 while (err > 0) { 365 int res = nl_recvmsgs(nl_handle, cb); 366 if (res < 0) { 367 wpa_printf(MSG_INFO, 368 "nl80211: %s->nl_recvmsgs failed: %d", 369 __func__, res); 370 } 371 } 372 out: 373 nl_cb_put(cb); 374 if (!valid_handler && valid_data == (void *) -1) 375 nl80211_nlmsg_clear(msg); 376 nlmsg_free(msg); 377 return err; 378 } 379 380 381 int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv, 382 struct nl_msg *msg, 383 int (*valid_handler)(struct nl_msg *, void *), 384 void *valid_data) 385 { 386 return send_and_recv(drv->global, drv->global->nl, msg, 387 valid_handler, valid_data); 388 } 389 390 391 struct family_data { 392 const char *group; 393 int id; 394 }; 395 396 397 static int family_handler(struct nl_msg *msg, void *arg) 398 { 399 struct family_data *res = arg; 400 struct nlattr *tb[CTRL_ATTR_MAX + 1]; 401 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 402 struct nlattr *mcgrp; 403 int i; 404 405 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 406 genlmsg_attrlen(gnlh, 0), NULL); 407 if (!tb[CTRL_ATTR_MCAST_GROUPS]) 408 return NL_SKIP; 409 410 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) { 411 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1]; 412 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp), 413 nla_len(mcgrp), NULL); 414 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] || 415 !tb2[CTRL_ATTR_MCAST_GRP_ID] || 416 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]), 417 res->group, 418 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0) 419 continue; 420 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]); 421 break; 422 }; 423 424 return NL_SKIP; 425 } 426 427 428 static int nl_get_multicast_id(struct nl80211_global *global, 429 const char *family, const char *group) 430 { 431 struct nl_msg *msg; 432 int ret; 433 struct family_data res = { group, -ENOENT }; 434 435 msg = nlmsg_alloc(); 436 if (!msg) 437 return -ENOMEM; 438 if (!genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"), 439 0, 0, CTRL_CMD_GETFAMILY, 0) || 440 nla_put_string(msg, CTRL_ATTR_FAMILY_NAME, family)) { 441 nlmsg_free(msg); 442 return -1; 443 } 444 445 ret = send_and_recv(global, global->nl, msg, family_handler, &res); 446 if (ret == 0) 447 ret = res.id; 448 return ret; 449 } 450 451 452 void * nl80211_cmd(struct wpa_driver_nl80211_data *drv, 453 struct nl_msg *msg, int flags, uint8_t cmd) 454 { 455 if (TEST_FAIL()) 456 return NULL; 457 return genlmsg_put(msg, 0, 0, drv->global->nl80211_id, 458 0, flags, cmd, 0); 459 } 460 461 462 static int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss) 463 { 464 if (bss->wdev_id_set) 465 return nla_put_u64(msg, NL80211_ATTR_WDEV, bss->wdev_id); 466 return nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 467 } 468 469 470 struct nl_msg * nl80211_cmd_msg(struct i802_bss *bss, int flags, uint8_t cmd) 471 { 472 struct nl_msg *msg; 473 474 msg = nlmsg_alloc(); 475 if (!msg) 476 return NULL; 477 478 if (!nl80211_cmd(bss->drv, msg, flags, cmd) || 479 nl80211_set_iface_id(msg, bss) < 0) { 480 nlmsg_free(msg); 481 return NULL; 482 } 483 484 return msg; 485 } 486 487 488 static struct nl_msg * 489 nl80211_ifindex_msg(struct wpa_driver_nl80211_data *drv, int ifindex, 490 int flags, uint8_t cmd) 491 { 492 struct nl_msg *msg; 493 494 msg = nlmsg_alloc(); 495 if (!msg) 496 return NULL; 497 498 if (!nl80211_cmd(drv, msg, flags, cmd) || 499 nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex)) { 500 nlmsg_free(msg); 501 return NULL; 502 } 503 504 return msg; 505 } 506 507 508 struct nl_msg * nl80211_drv_msg(struct wpa_driver_nl80211_data *drv, int flags, 509 uint8_t cmd) 510 { 511 return nl80211_ifindex_msg(drv, drv->ifindex, flags, cmd); 512 } 513 514 515 struct nl_msg * nl80211_bss_msg(struct i802_bss *bss, int flags, uint8_t cmd) 516 { 517 return nl80211_ifindex_msg(bss->drv, bss->ifindex, flags, cmd); 518 } 519 520 521 struct wiphy_idx_data { 522 int wiphy_idx; 523 enum nl80211_iftype nlmode; 524 u8 *macaddr; 525 }; 526 527 528 static int netdev_info_handler(struct nl_msg *msg, void *arg) 529 { 530 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 531 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 532 struct wiphy_idx_data *info = arg; 533 534 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 535 genlmsg_attrlen(gnlh, 0), NULL); 536 537 if (tb[NL80211_ATTR_WIPHY]) 538 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 539 540 if (tb[NL80211_ATTR_IFTYPE]) 541 info->nlmode = nla_get_u32(tb[NL80211_ATTR_IFTYPE]); 542 543 if (tb[NL80211_ATTR_MAC] && info->macaddr) 544 os_memcpy(info->macaddr, nla_data(tb[NL80211_ATTR_MAC]), 545 ETH_ALEN); 546 547 return NL_SKIP; 548 } 549 550 551 int nl80211_get_wiphy_index(struct i802_bss *bss) 552 { 553 struct nl_msg *msg; 554 struct wiphy_idx_data data = { 555 .wiphy_idx = -1, 556 .macaddr = NULL, 557 }; 558 559 if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE))) 560 return -1; 561 562 if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0) 563 return data.wiphy_idx; 564 return -1; 565 } 566 567 568 static enum nl80211_iftype nl80211_get_ifmode(struct i802_bss *bss) 569 { 570 struct nl_msg *msg; 571 struct wiphy_idx_data data = { 572 .nlmode = NL80211_IFTYPE_UNSPECIFIED, 573 .macaddr = NULL, 574 }; 575 576 if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE))) 577 return NL80211_IFTYPE_UNSPECIFIED; 578 579 if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0) 580 return data.nlmode; 581 return NL80211_IFTYPE_UNSPECIFIED; 582 } 583 584 585 static int nl80211_get_macaddr(struct i802_bss *bss) 586 { 587 struct nl_msg *msg; 588 struct wiphy_idx_data data = { 589 .macaddr = bss->addr, 590 }; 591 592 if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE))) 593 return -1; 594 595 return send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data); 596 } 597 598 599 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv, 600 struct nl80211_wiphy_data *w) 601 { 602 struct nl_msg *msg; 603 int ret; 604 605 msg = nlmsg_alloc(); 606 if (!msg) 607 return -1; 608 609 if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS) || 610 nla_put_u32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx)) { 611 nlmsg_free(msg); 612 return -1; 613 } 614 615 ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL); 616 if (ret) { 617 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command " 618 "failed: ret=%d (%s)", 619 ret, strerror(-ret)); 620 } 621 return ret; 622 } 623 624 625 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle) 626 { 627 struct nl80211_wiphy_data *w = eloop_ctx; 628 int res; 629 630 wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available"); 631 632 res = nl_recvmsgs(handle, w->nl_cb); 633 if (res < 0) { 634 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d", 635 __func__, res); 636 } 637 } 638 639 640 static int process_beacon_event(struct nl_msg *msg, void *arg) 641 { 642 struct nl80211_wiphy_data *w = arg; 643 struct wpa_driver_nl80211_data *drv; 644 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 645 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 646 union wpa_event_data event; 647 648 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 649 genlmsg_attrlen(gnlh, 0), NULL); 650 651 if (gnlh->cmd != NL80211_CMD_FRAME) { 652 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)", 653 gnlh->cmd); 654 return NL_SKIP; 655 } 656 657 if (!tb[NL80211_ATTR_FRAME]) 658 return NL_SKIP; 659 660 dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data, 661 wiphy_list) { 662 os_memset(&event, 0, sizeof(event)); 663 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]); 664 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]); 665 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 666 } 667 668 return NL_SKIP; 669 } 670 671 672 static struct nl80211_wiphy_data * 673 nl80211_get_wiphy_data_ap(struct i802_bss *bss) 674 { 675 static DEFINE_DL_LIST(nl80211_wiphys); 676 struct nl80211_wiphy_data *w; 677 int wiphy_idx, found = 0; 678 struct i802_bss *tmp_bss; 679 u8 channel; 680 681 if (bss->wiphy_data != NULL) 682 return bss->wiphy_data; 683 684 wiphy_idx = nl80211_get_wiphy_index(bss); 685 686 dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) { 687 if (w->wiphy_idx == wiphy_idx) 688 goto add; 689 } 690 691 /* alloc new one */ 692 w = os_zalloc(sizeof(*w)); 693 if (w == NULL) 694 return NULL; 695 w->wiphy_idx = wiphy_idx; 696 dl_list_init(&w->bsss); 697 dl_list_init(&w->drvs); 698 699 /* Beacon frames not supported in IEEE 802.11ad */ 700 if (ieee80211_freq_to_chan(bss->freq, &channel) != 701 HOSTAPD_MODE_IEEE80211AD) { 702 w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 703 if (!w->nl_cb) { 704 os_free(w); 705 return NULL; 706 } 707 nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 708 no_seq_check, NULL); 709 nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 710 process_beacon_event, w); 711 712 w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb, 713 "wiphy beacons"); 714 if (w->nl_beacons == NULL) { 715 os_free(w); 716 return NULL; 717 } 718 719 if (nl80211_register_beacons(bss->drv, w)) { 720 nl_destroy_handles(&w->nl_beacons); 721 os_free(w); 722 return NULL; 723 } 724 725 nl80211_register_eloop_read(&w->nl_beacons, 726 nl80211_recv_beacons, w); 727 } 728 729 dl_list_add(&nl80211_wiphys, &w->list); 730 731 add: 732 /* drv entry for this bss already there? */ 733 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) { 734 if (tmp_bss->drv == bss->drv) { 735 found = 1; 736 break; 737 } 738 } 739 /* if not add it */ 740 if (!found) 741 dl_list_add(&w->drvs, &bss->drv->wiphy_list); 742 743 dl_list_add(&w->bsss, &bss->wiphy_list); 744 bss->wiphy_data = w; 745 return w; 746 } 747 748 749 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss) 750 { 751 struct nl80211_wiphy_data *w = bss->wiphy_data; 752 struct i802_bss *tmp_bss; 753 int found = 0; 754 755 if (w == NULL) 756 return; 757 bss->wiphy_data = NULL; 758 dl_list_del(&bss->wiphy_list); 759 760 /* still any for this drv present? */ 761 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) { 762 if (tmp_bss->drv == bss->drv) { 763 found = 1; 764 break; 765 } 766 } 767 /* if not remove it */ 768 if (!found) 769 dl_list_del(&bss->drv->wiphy_list); 770 771 if (!dl_list_empty(&w->bsss)) 772 return; 773 774 if (w->nl_beacons) 775 nl80211_destroy_eloop_handle(&w->nl_beacons); 776 777 nl_cb_put(w->nl_cb); 778 dl_list_del(&w->list); 779 os_free(w); 780 } 781 782 783 static unsigned int nl80211_get_ifindex(void *priv) 784 { 785 struct i802_bss *bss = priv; 786 struct wpa_driver_nl80211_data *drv = bss->drv; 787 788 return drv->ifindex; 789 } 790 791 792 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid) 793 { 794 struct i802_bss *bss = priv; 795 struct wpa_driver_nl80211_data *drv = bss->drv; 796 if (!drv->associated) 797 return -1; 798 os_memcpy(bssid, drv->bssid, ETH_ALEN); 799 return 0; 800 } 801 802 803 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid) 804 { 805 struct i802_bss *bss = priv; 806 struct wpa_driver_nl80211_data *drv = bss->drv; 807 if (!drv->associated) 808 return -1; 809 os_memcpy(ssid, drv->ssid, drv->ssid_len); 810 return drv->ssid_len; 811 } 812 813 814 static void wpa_driver_nl80211_event_newlink( 815 struct nl80211_global *global, struct wpa_driver_nl80211_data *drv, 816 int ifindex, const char *ifname) 817 { 818 union wpa_event_data event; 819 820 if (drv && os_strcmp(drv->first_bss->ifname, ifname) == 0) { 821 if (if_nametoindex(drv->first_bss->ifname) == 0) { 822 wpa_printf(MSG_DEBUG, "nl80211: Interface %s does not exist - ignore RTM_NEWLINK", 823 drv->first_bss->ifname); 824 return; 825 } 826 if (!drv->if_removed) 827 return; 828 wpa_printf(MSG_DEBUG, "nl80211: Mark if_removed=0 for %s based on RTM_NEWLINK event", 829 drv->first_bss->ifname); 830 drv->if_removed = 0; 831 } 832 833 os_memset(&event, 0, sizeof(event)); 834 event.interface_status.ifindex = ifindex; 835 os_strlcpy(event.interface_status.ifname, ifname, 836 sizeof(event.interface_status.ifname)); 837 event.interface_status.ievent = EVENT_INTERFACE_ADDED; 838 if (drv) 839 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event); 840 else 841 wpa_supplicant_event_global(global->ctx, EVENT_INTERFACE_STATUS, 842 &event); 843 } 844 845 846 static void wpa_driver_nl80211_event_dellink( 847 struct nl80211_global *global, struct wpa_driver_nl80211_data *drv, 848 int ifindex, const char *ifname) 849 { 850 union wpa_event_data event; 851 852 if (drv && os_strcmp(drv->first_bss->ifname, ifname) == 0) { 853 if (drv->if_removed) { 854 wpa_printf(MSG_DEBUG, "nl80211: if_removed already set - ignore RTM_DELLINK event for %s", 855 ifname); 856 return; 857 } 858 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed - mark if_removed=1", 859 ifname); 860 drv->if_removed = 1; 861 } else { 862 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed", 863 ifname); 864 } 865 866 os_memset(&event, 0, sizeof(event)); 867 event.interface_status.ifindex = ifindex; 868 os_strlcpy(event.interface_status.ifname, ifname, 869 sizeof(event.interface_status.ifname)); 870 event.interface_status.ievent = EVENT_INTERFACE_REMOVED; 871 if (drv) 872 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event); 873 else 874 wpa_supplicant_event_global(global->ctx, EVENT_INTERFACE_STATUS, 875 &event); 876 } 877 878 879 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv, 880 u8 *buf, size_t len) 881 { 882 int attrlen, rta_len; 883 struct rtattr *attr; 884 885 attrlen = len; 886 attr = (struct rtattr *) buf; 887 888 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 889 while (RTA_OK(attr, attrlen)) { 890 if (attr->rta_type == IFLA_IFNAME) { 891 if (os_strcmp(((char *) attr) + rta_len, 892 drv->first_bss->ifname) == 0) 893 return 1; 894 else 895 break; 896 } 897 attr = RTA_NEXT(attr, attrlen); 898 } 899 900 return 0; 901 } 902 903 904 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv, 905 int ifindex, u8 *buf, size_t len) 906 { 907 if (drv->ifindex == ifindex) 908 return 1; 909 910 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) { 911 nl80211_check_global(drv->global); 912 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed " 913 "interface"); 914 wpa_driver_nl80211_finish_drv_init(drv, NULL, 0, NULL); 915 return 1; 916 } 917 918 return 0; 919 } 920 921 922 static struct wpa_driver_nl80211_data * 923 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len) 924 { 925 struct wpa_driver_nl80211_data *drv; 926 dl_list_for_each(drv, &global->interfaces, 927 struct wpa_driver_nl80211_data, list) { 928 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) || 929 have_ifidx(drv, idx, IFIDX_ANY)) 930 return drv; 931 } 932 return NULL; 933 } 934 935 936 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx, 937 struct ifinfomsg *ifi, 938 u8 *buf, size_t len) 939 { 940 struct nl80211_global *global = ctx; 941 struct wpa_driver_nl80211_data *drv; 942 int attrlen; 943 struct rtattr *attr; 944 u32 brid = 0; 945 char namebuf[IFNAMSIZ]; 946 char ifname[IFNAMSIZ + 1]; 947 char extra[100], *pos, *end; 948 949 extra[0] = '\0'; 950 pos = extra; 951 end = pos + sizeof(extra); 952 ifname[0] = '\0'; 953 954 attrlen = len; 955 attr = (struct rtattr *) buf; 956 while (RTA_OK(attr, attrlen)) { 957 switch (attr->rta_type) { 958 case IFLA_IFNAME: 959 if (RTA_PAYLOAD(attr) >= IFNAMSIZ) 960 break; 961 os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr)); 962 ifname[RTA_PAYLOAD(attr)] = '\0'; 963 break; 964 case IFLA_MASTER: 965 brid = nla_get_u32((struct nlattr *) attr); 966 pos += os_snprintf(pos, end - pos, " master=%u", brid); 967 break; 968 case IFLA_WIRELESS: 969 pos += os_snprintf(pos, end - pos, " wext"); 970 break; 971 case IFLA_OPERSTATE: 972 pos += os_snprintf(pos, end - pos, " operstate=%u", 973 nla_get_u32((struct nlattr *) attr)); 974 break; 975 case IFLA_LINKMODE: 976 pos += os_snprintf(pos, end - pos, " linkmode=%u", 977 nla_get_u32((struct nlattr *) attr)); 978 break; 979 } 980 attr = RTA_NEXT(attr, attrlen); 981 } 982 extra[sizeof(extra) - 1] = '\0'; 983 984 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)", 985 ifi->ifi_index, ifname, extra, ifi->ifi_family, 986 ifi->ifi_flags, 987 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "", 988 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "", 989 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "", 990 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : ""); 991 992 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len); 993 if (!drv) 994 goto event_newlink; 995 996 if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) { 997 namebuf[0] = '\0'; 998 if (if_indextoname(ifi->ifi_index, namebuf) && 999 linux_iface_up(drv->global->ioctl_sock, namebuf) > 0) { 1000 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down " 1001 "event since interface %s is up", namebuf); 1002 drv->ignore_if_down_event = 0; 1003 return; 1004 } 1005 wpa_printf(MSG_DEBUG, "nl80211: Interface down (%s/%s)", 1006 namebuf, ifname); 1007 if (os_strcmp(drv->first_bss->ifname, ifname) != 0) { 1008 wpa_printf(MSG_DEBUG, 1009 "nl80211: Not the main interface (%s) - do not indicate interface down", 1010 drv->first_bss->ifname); 1011 } else if (drv->ignore_if_down_event) { 1012 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down " 1013 "event generated by mode change"); 1014 drv->ignore_if_down_event = 0; 1015 } else { 1016 drv->if_disabled = 1; 1017 wpa_supplicant_event(drv->ctx, 1018 EVENT_INTERFACE_DISABLED, NULL); 1019 1020 /* 1021 * Try to get drv again, since it may be removed as 1022 * part of the EVENT_INTERFACE_DISABLED handling for 1023 * dynamic interfaces 1024 */ 1025 drv = nl80211_find_drv(global, ifi->ifi_index, 1026 buf, len); 1027 if (!drv) 1028 return; 1029 } 1030 } 1031 1032 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) { 1033 if (if_indextoname(ifi->ifi_index, namebuf) && 1034 linux_iface_up(drv->global->ioctl_sock, namebuf) == 0) { 1035 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 1036 "event since interface %s is down", 1037 namebuf); 1038 } else if (if_nametoindex(drv->first_bss->ifname) == 0) { 1039 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 1040 "event since interface %s does not exist", 1041 drv->first_bss->ifname); 1042 } else if (drv->if_removed) { 1043 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 1044 "event since interface %s is marked " 1045 "removed", drv->first_bss->ifname); 1046 } else { 1047 struct i802_bss *bss; 1048 u8 addr[ETH_ALEN]; 1049 1050 /* Re-read MAC address as it may have changed */ 1051 bss = get_bss_ifindex(drv, ifi->ifi_index); 1052 if (bss && 1053 linux_get_ifhwaddr(drv->global->ioctl_sock, 1054 bss->ifname, addr) < 0) { 1055 wpa_printf(MSG_DEBUG, 1056 "nl80211: %s: failed to re-read MAC address", 1057 bss->ifname); 1058 } else if (bss && 1059 os_memcmp(addr, bss->addr, ETH_ALEN) != 0) { 1060 wpa_printf(MSG_DEBUG, 1061 "nl80211: Own MAC address on ifindex %d (%s) changed from " 1062 MACSTR " to " MACSTR, 1063 ifi->ifi_index, bss->ifname, 1064 MAC2STR(bss->addr), 1065 MAC2STR(addr)); 1066 os_memcpy(bss->addr, addr, ETH_ALEN); 1067 } 1068 1069 wpa_printf(MSG_DEBUG, "nl80211: Interface up"); 1070 drv->if_disabled = 0; 1071 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, 1072 NULL); 1073 } 1074 } 1075 1076 /* 1077 * Some drivers send the association event before the operup event--in 1078 * this case, lifting operstate in wpa_driver_nl80211_set_operstate() 1079 * fails. This will hit us when wpa_supplicant does not need to do 1080 * IEEE 802.1X authentication 1081 */ 1082 if (drv->operstate == 1 && 1083 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP && 1084 !(ifi->ifi_flags & IFF_RUNNING)) { 1085 wpa_printf(MSG_DEBUG, "nl80211: Set IF_OPER_UP again based on ifi_flags and expected operstate"); 1086 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 1087 -1, IF_OPER_UP); 1088 } 1089 1090 event_newlink: 1091 if (ifname[0]) 1092 wpa_driver_nl80211_event_newlink(global, drv, ifi->ifi_index, 1093 ifname); 1094 1095 if (ifi->ifi_family == AF_BRIDGE && brid && drv) { 1096 struct i802_bss *bss; 1097 1098 /* device has been added to bridge */ 1099 if (!if_indextoname(brid, namebuf)) { 1100 wpa_printf(MSG_DEBUG, 1101 "nl80211: Could not find bridge ifname for ifindex %u", 1102 brid); 1103 return; 1104 } 1105 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s", 1106 brid, namebuf); 1107 add_ifidx(drv, brid, ifi->ifi_index); 1108 1109 for (bss = drv->first_bss; bss; bss = bss->next) { 1110 if (os_strcmp(ifname, bss->ifname) == 0) { 1111 os_strlcpy(bss->brname, namebuf, IFNAMSIZ); 1112 break; 1113 } 1114 } 1115 } 1116 } 1117 1118 1119 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx, 1120 struct ifinfomsg *ifi, 1121 u8 *buf, size_t len) 1122 { 1123 struct nl80211_global *global = ctx; 1124 struct wpa_driver_nl80211_data *drv; 1125 int attrlen; 1126 struct rtattr *attr; 1127 u32 brid = 0; 1128 char ifname[IFNAMSIZ + 1]; 1129 char extra[100], *pos, *end; 1130 1131 extra[0] = '\0'; 1132 pos = extra; 1133 end = pos + sizeof(extra); 1134 ifname[0] = '\0'; 1135 1136 attrlen = len; 1137 attr = (struct rtattr *) buf; 1138 while (RTA_OK(attr, attrlen)) { 1139 switch (attr->rta_type) { 1140 case IFLA_IFNAME: 1141 if (RTA_PAYLOAD(attr) >= IFNAMSIZ) 1142 break; 1143 os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr)); 1144 ifname[RTA_PAYLOAD(attr)] = '\0'; 1145 break; 1146 case IFLA_MASTER: 1147 brid = nla_get_u32((struct nlattr *) attr); 1148 pos += os_snprintf(pos, end - pos, " master=%u", brid); 1149 break; 1150 case IFLA_OPERSTATE: 1151 pos += os_snprintf(pos, end - pos, " operstate=%u", 1152 nla_get_u32((struct nlattr *) attr)); 1153 break; 1154 case IFLA_LINKMODE: 1155 pos += os_snprintf(pos, end - pos, " linkmode=%u", 1156 nla_get_u32((struct nlattr *) attr)); 1157 break; 1158 } 1159 attr = RTA_NEXT(attr, attrlen); 1160 } 1161 extra[sizeof(extra) - 1] = '\0'; 1162 1163 wpa_printf(MSG_DEBUG, "RTM_DELLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)", 1164 ifi->ifi_index, ifname, extra, ifi->ifi_family, 1165 ifi->ifi_flags, 1166 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "", 1167 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "", 1168 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "", 1169 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : ""); 1170 1171 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len); 1172 1173 if (ifi->ifi_family == AF_BRIDGE && brid && drv) { 1174 /* device has been removed from bridge */ 1175 char namebuf[IFNAMSIZ]; 1176 1177 if (!if_indextoname(brid, namebuf)) { 1178 wpa_printf(MSG_DEBUG, 1179 "nl80211: Could not find bridge ifname for ifindex %u", 1180 brid); 1181 } else { 1182 wpa_printf(MSG_DEBUG, 1183 "nl80211: Remove ifindex %u for bridge %s", 1184 brid, namebuf); 1185 } 1186 del_ifidx(drv, brid, ifi->ifi_index); 1187 } 1188 1189 if (ifi->ifi_family != AF_BRIDGE || !brid) 1190 wpa_driver_nl80211_event_dellink(global, drv, ifi->ifi_index, 1191 ifname); 1192 } 1193 1194 1195 struct nl80211_get_assoc_freq_arg { 1196 struct wpa_driver_nl80211_data *drv; 1197 unsigned int assoc_freq; 1198 unsigned int ibss_freq; 1199 u8 assoc_bssid[ETH_ALEN]; 1200 u8 assoc_ssid[SSID_MAX_LEN]; 1201 u8 assoc_ssid_len; 1202 }; 1203 1204 static int nl80211_get_assoc_freq_handler(struct nl_msg *msg, void *arg) 1205 { 1206 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1207 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1208 struct nlattr *bss[NL80211_BSS_MAX + 1]; 1209 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { 1210 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC }, 1211 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, 1212 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC }, 1213 [NL80211_BSS_STATUS] = { .type = NLA_U32 }, 1214 }; 1215 struct nl80211_get_assoc_freq_arg *ctx = arg; 1216 enum nl80211_bss_status status; 1217 1218 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1219 genlmsg_attrlen(gnlh, 0), NULL); 1220 if (!tb[NL80211_ATTR_BSS] || 1221 nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS], 1222 bss_policy) || 1223 !bss[NL80211_BSS_STATUS]) 1224 return NL_SKIP; 1225 1226 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 1227 if (status == NL80211_BSS_STATUS_ASSOCIATED && 1228 bss[NL80211_BSS_FREQUENCY]) { 1229 ctx->assoc_freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 1230 wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz", 1231 ctx->assoc_freq); 1232 } 1233 if (status == NL80211_BSS_STATUS_IBSS_JOINED && 1234 bss[NL80211_BSS_FREQUENCY]) { 1235 ctx->ibss_freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 1236 wpa_printf(MSG_DEBUG, "nl80211: IBSS-joined on %u MHz", 1237 ctx->ibss_freq); 1238 } 1239 if (status == NL80211_BSS_STATUS_ASSOCIATED && 1240 bss[NL80211_BSS_BSSID]) { 1241 os_memcpy(ctx->assoc_bssid, 1242 nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN); 1243 wpa_printf(MSG_DEBUG, "nl80211: Associated with " 1244 MACSTR, MAC2STR(ctx->assoc_bssid)); 1245 } 1246 1247 if (status == NL80211_BSS_STATUS_ASSOCIATED && 1248 bss[NL80211_BSS_INFORMATION_ELEMENTS]) { 1249 const u8 *ie, *ssid; 1250 size_t ie_len; 1251 1252 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 1253 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 1254 ssid = get_ie(ie, ie_len, WLAN_EID_SSID); 1255 if (ssid && ssid[1] > 0 && ssid[1] <= SSID_MAX_LEN) { 1256 ctx->assoc_ssid_len = ssid[1]; 1257 os_memcpy(ctx->assoc_ssid, ssid + 2, ssid[1]); 1258 } 1259 } 1260 1261 return NL_SKIP; 1262 } 1263 1264 1265 int nl80211_get_assoc_ssid(struct wpa_driver_nl80211_data *drv, u8 *ssid) 1266 { 1267 struct nl_msg *msg; 1268 int ret; 1269 struct nl80211_get_assoc_freq_arg arg; 1270 1271 msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 1272 os_memset(&arg, 0, sizeof(arg)); 1273 arg.drv = drv; 1274 ret = send_and_recv_msgs(drv, msg, nl80211_get_assoc_freq_handler, 1275 &arg); 1276 if (ret == 0) { 1277 os_memcpy(ssid, arg.assoc_ssid, arg.assoc_ssid_len); 1278 return arg.assoc_ssid_len; 1279 } 1280 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d (%s)", 1281 ret, strerror(-ret)); 1282 return ret; 1283 } 1284 1285 1286 unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv) 1287 { 1288 struct nl_msg *msg; 1289 int ret; 1290 struct nl80211_get_assoc_freq_arg arg; 1291 1292 msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 1293 os_memset(&arg, 0, sizeof(arg)); 1294 arg.drv = drv; 1295 ret = send_and_recv_msgs(drv, msg, nl80211_get_assoc_freq_handler, 1296 &arg); 1297 if (ret == 0) { 1298 unsigned int freq = drv->nlmode == NL80211_IFTYPE_ADHOC ? 1299 arg.ibss_freq : arg.assoc_freq; 1300 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the " 1301 "associated BSS from scan results: %u MHz", freq); 1302 if (freq) 1303 drv->assoc_freq = freq; 1304 return drv->assoc_freq; 1305 } 1306 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 1307 "(%s)", ret, strerror(-ret)); 1308 return drv->assoc_freq; 1309 } 1310 1311 1312 static int get_link_signal(struct nl_msg *msg, void *arg) 1313 { 1314 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1315 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1316 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1]; 1317 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = { 1318 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 }, 1319 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 }, 1320 [NL80211_STA_INFO_BEACON_SIGNAL_AVG] = { .type = NLA_U8 }, 1321 }; 1322 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1]; 1323 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = { 1324 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 }, 1325 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 }, 1326 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG }, 1327 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG }, 1328 }; 1329 struct wpa_signal_info *sig_change = arg; 1330 1331 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1332 genlmsg_attrlen(gnlh, 0), NULL); 1333 if (!tb[NL80211_ATTR_STA_INFO] || 1334 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX, 1335 tb[NL80211_ATTR_STA_INFO], policy)) 1336 return NL_SKIP; 1337 if (!sinfo[NL80211_STA_INFO_SIGNAL]) 1338 return NL_SKIP; 1339 1340 sig_change->current_signal = 1341 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]); 1342 1343 if (sinfo[NL80211_STA_INFO_SIGNAL_AVG]) 1344 sig_change->avg_signal = 1345 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]); 1346 else 1347 sig_change->avg_signal = 0; 1348 1349 if (sinfo[NL80211_STA_INFO_BEACON_SIGNAL_AVG]) 1350 sig_change->avg_beacon_signal = 1351 (s8) 1352 nla_get_u8(sinfo[NL80211_STA_INFO_BEACON_SIGNAL_AVG]); 1353 else 1354 sig_change->avg_beacon_signal = 0; 1355 1356 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) { 1357 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX, 1358 sinfo[NL80211_STA_INFO_TX_BITRATE], 1359 rate_policy)) { 1360 sig_change->current_txrate = 0; 1361 } else { 1362 if (rinfo[NL80211_RATE_INFO_BITRATE]) { 1363 sig_change->current_txrate = 1364 nla_get_u16(rinfo[ 1365 NL80211_RATE_INFO_BITRATE]) * 100; 1366 } 1367 } 1368 } 1369 1370 return NL_SKIP; 1371 } 1372 1373 1374 int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv, 1375 struct wpa_signal_info *sig) 1376 { 1377 struct nl_msg *msg; 1378 1379 sig->current_signal = -9999; 1380 sig->current_txrate = 0; 1381 1382 if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_STATION)) || 1383 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid)) { 1384 nlmsg_free(msg); 1385 return -ENOBUFS; 1386 } 1387 1388 return send_and_recv_msgs(drv, msg, get_link_signal, sig); 1389 } 1390 1391 1392 static int get_link_noise(struct nl_msg *msg, void *arg) 1393 { 1394 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1395 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1396 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 1397 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 1398 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 1399 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 1400 }; 1401 struct wpa_signal_info *sig_change = arg; 1402 1403 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1404 genlmsg_attrlen(gnlh, 0), NULL); 1405 1406 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 1407 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!"); 1408 return NL_SKIP; 1409 } 1410 1411 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 1412 tb[NL80211_ATTR_SURVEY_INFO], 1413 survey_policy)) { 1414 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested " 1415 "attributes!"); 1416 return NL_SKIP; 1417 } 1418 1419 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 1420 return NL_SKIP; 1421 1422 if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 1423 sig_change->frequency) 1424 return NL_SKIP; 1425 1426 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 1427 return NL_SKIP; 1428 1429 sig_change->current_noise = 1430 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 1431 1432 return NL_SKIP; 1433 } 1434 1435 1436 int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv, 1437 struct wpa_signal_info *sig_change) 1438 { 1439 struct nl_msg *msg; 1440 1441 sig_change->current_noise = 9999; 1442 sig_change->frequency = drv->assoc_freq; 1443 1444 msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 1445 return send_and_recv_msgs(drv, msg, get_link_noise, sig_change); 1446 } 1447 1448 1449 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx, 1450 void *handle) 1451 { 1452 struct nl_cb *cb = eloop_ctx; 1453 int res; 1454 1455 wpa_printf(MSG_MSGDUMP, "nl80211: Event message available"); 1456 1457 res = nl_recvmsgs(handle, cb); 1458 if (res < 0) { 1459 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d", 1460 __func__, res); 1461 } 1462 } 1463 1464 1465 /** 1466 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain 1467 * @priv: driver_nl80211 private data 1468 * @alpha2_arg: country to which to switch to 1469 * Returns: 0 on success, -1 on failure 1470 * 1471 * This asks nl80211 to set the regulatory domain for given 1472 * country ISO / IEC alpha2. 1473 */ 1474 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg) 1475 { 1476 struct i802_bss *bss = priv; 1477 struct wpa_driver_nl80211_data *drv = bss->drv; 1478 char alpha2[3]; 1479 struct nl_msg *msg; 1480 1481 msg = nlmsg_alloc(); 1482 if (!msg) 1483 return -ENOMEM; 1484 1485 alpha2[0] = alpha2_arg[0]; 1486 alpha2[1] = alpha2_arg[1]; 1487 alpha2[2] = '\0'; 1488 1489 if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG) || 1490 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, alpha2)) { 1491 nlmsg_free(msg); 1492 return -EINVAL; 1493 } 1494 if (send_and_recv_msgs(drv, msg, NULL, NULL)) 1495 return -EINVAL; 1496 return 0; 1497 } 1498 1499 1500 static int nl80211_get_country(struct nl_msg *msg, void *arg) 1501 { 1502 char *alpha2 = arg; 1503 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 1504 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1505 1506 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1507 genlmsg_attrlen(gnlh, 0), NULL); 1508 if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) { 1509 wpa_printf(MSG_DEBUG, "nl80211: No country information available"); 1510 return NL_SKIP; 1511 } 1512 os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3); 1513 return NL_SKIP; 1514 } 1515 1516 1517 static int wpa_driver_nl80211_get_country(void *priv, char *alpha2) 1518 { 1519 struct i802_bss *bss = priv; 1520 struct wpa_driver_nl80211_data *drv = bss->drv; 1521 struct nl_msg *msg; 1522 int ret; 1523 1524 msg = nlmsg_alloc(); 1525 if (!msg) 1526 return -ENOMEM; 1527 1528 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG); 1529 alpha2[0] = '\0'; 1530 ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2); 1531 if (!alpha2[0]) 1532 ret = -1; 1533 1534 return ret; 1535 } 1536 1537 1538 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global) 1539 { 1540 int ret; 1541 1542 global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 1543 if (global->nl_cb == NULL) { 1544 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 1545 "callbacks"); 1546 return -1; 1547 } 1548 1549 global->nl = nl_create_handle(global->nl_cb, "nl"); 1550 if (global->nl == NULL) 1551 goto err; 1552 1553 global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211"); 1554 if (global->nl80211_id < 0) { 1555 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not " 1556 "found"); 1557 goto err; 1558 } 1559 1560 global->nl_event = nl_create_handle(global->nl_cb, "event"); 1561 if (global->nl_event == NULL) 1562 goto err; 1563 1564 ret = nl_get_multicast_id(global, "nl80211", "scan"); 1565 if (ret >= 0) 1566 ret = nl_socket_add_membership(global->nl_event, ret); 1567 if (ret < 0) { 1568 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 1569 "membership for scan events: %d (%s)", 1570 ret, strerror(-ret)); 1571 goto err; 1572 } 1573 1574 ret = nl_get_multicast_id(global, "nl80211", "mlme"); 1575 if (ret >= 0) 1576 ret = nl_socket_add_membership(global->nl_event, ret); 1577 if (ret < 0) { 1578 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 1579 "membership for mlme events: %d (%s)", 1580 ret, strerror(-ret)); 1581 goto err; 1582 } 1583 1584 ret = nl_get_multicast_id(global, "nl80211", "regulatory"); 1585 if (ret >= 0) 1586 ret = nl_socket_add_membership(global->nl_event, ret); 1587 if (ret < 0) { 1588 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast " 1589 "membership for regulatory events: %d (%s)", 1590 ret, strerror(-ret)); 1591 /* Continue without regulatory events */ 1592 } 1593 1594 ret = nl_get_multicast_id(global, "nl80211", "vendor"); 1595 if (ret >= 0) 1596 ret = nl_socket_add_membership(global->nl_event, ret); 1597 if (ret < 0) { 1598 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast " 1599 "membership for vendor events: %d (%s)", 1600 ret, strerror(-ret)); 1601 /* Continue without vendor events */ 1602 } 1603 1604 nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 1605 no_seq_check, NULL); 1606 nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 1607 process_global_event, global); 1608 1609 nl80211_register_eloop_read(&global->nl_event, 1610 wpa_driver_nl80211_event_receive, 1611 global->nl_cb); 1612 1613 return 0; 1614 1615 err: 1616 nl_destroy_handles(&global->nl_event); 1617 nl_destroy_handles(&global->nl); 1618 nl_cb_put(global->nl_cb); 1619 global->nl_cb = NULL; 1620 return -1; 1621 } 1622 1623 1624 static void nl80211_check_global(struct nl80211_global *global) 1625 { 1626 struct nl_handle *handle; 1627 const char *groups[] = { "scan", "mlme", "regulatory", "vendor", NULL }; 1628 int ret; 1629 unsigned int i; 1630 1631 /* 1632 * Try to re-add memberships to handle case of cfg80211 getting reloaded 1633 * and all registration having been cleared. 1634 */ 1635 handle = (void *) (((intptr_t) global->nl_event) ^ 1636 ELOOP_SOCKET_INVALID); 1637 1638 for (i = 0; groups[i]; i++) { 1639 ret = nl_get_multicast_id(global, "nl80211", groups[i]); 1640 if (ret >= 0) 1641 ret = nl_socket_add_membership(handle, ret); 1642 if (ret < 0) { 1643 wpa_printf(MSG_INFO, 1644 "nl80211: Could not re-add multicast membership for %s events: %d (%s)", 1645 groups[i], ret, strerror(-ret)); 1646 } 1647 } 1648 } 1649 1650 1651 static void wpa_driver_nl80211_rfkill_blocked(void *ctx) 1652 { 1653 struct wpa_driver_nl80211_data *drv = ctx; 1654 1655 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked"); 1656 1657 /* 1658 * rtnetlink ifdown handler will report interfaces other than the P2P 1659 * Device interface as disabled. 1660 */ 1661 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) 1662 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_DISABLED, NULL); 1663 } 1664 1665 1666 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx) 1667 { 1668 struct wpa_driver_nl80211_data *drv = ctx; 1669 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked"); 1670 if (i802_set_iface_flags(drv->first_bss, 1)) { 1671 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP " 1672 "after rfkill unblock"); 1673 return; 1674 } 1675 1676 if (is_p2p_net_interface(drv->nlmode)) 1677 nl80211_disable_11b_rates(drv, drv->ifindex, 1); 1678 1679 /* 1680 * rtnetlink ifup handler will report interfaces other than the P2P 1681 * Device interface as enabled. 1682 */ 1683 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) 1684 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, NULL); 1685 } 1686 1687 1688 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock, 1689 void *eloop_ctx, 1690 void *handle) 1691 { 1692 struct wpa_driver_nl80211_data *drv = eloop_ctx; 1693 u8 data[2048]; 1694 struct msghdr msg; 1695 struct iovec entry; 1696 u8 control[512]; 1697 struct cmsghdr *cmsg; 1698 int res, found_ee = 0, found_wifi = 0, acked = 0; 1699 union wpa_event_data event; 1700 1701 memset(&msg, 0, sizeof(msg)); 1702 msg.msg_iov = &entry; 1703 msg.msg_iovlen = 1; 1704 entry.iov_base = data; 1705 entry.iov_len = sizeof(data); 1706 msg.msg_control = &control; 1707 msg.msg_controllen = sizeof(control); 1708 1709 res = recvmsg(sock, &msg, MSG_ERRQUEUE); 1710 /* if error or not fitting 802.3 header, return */ 1711 if (res < 14) 1712 return; 1713 1714 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) 1715 { 1716 if (cmsg->cmsg_level == SOL_SOCKET && 1717 cmsg->cmsg_type == SCM_WIFI_STATUS) { 1718 int *ack; 1719 1720 found_wifi = 1; 1721 ack = (void *)CMSG_DATA(cmsg); 1722 acked = *ack; 1723 } 1724 1725 if (cmsg->cmsg_level == SOL_PACKET && 1726 cmsg->cmsg_type == PACKET_TX_TIMESTAMP) { 1727 struct sock_extended_err *err = 1728 (struct sock_extended_err *)CMSG_DATA(cmsg); 1729 1730 if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS) 1731 found_ee = 1; 1732 } 1733 } 1734 1735 if (!found_ee || !found_wifi) 1736 return; 1737 1738 memset(&event, 0, sizeof(event)); 1739 event.eapol_tx_status.dst = data; 1740 event.eapol_tx_status.data = data + 14; 1741 event.eapol_tx_status.data_len = res - 14; 1742 event.eapol_tx_status.ack = acked; 1743 wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event); 1744 } 1745 1746 1747 static int nl80211_init_bss(struct i802_bss *bss) 1748 { 1749 bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 1750 if (!bss->nl_cb) 1751 return -1; 1752 1753 nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 1754 no_seq_check, NULL); 1755 nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 1756 process_bss_event, bss); 1757 1758 return 0; 1759 } 1760 1761 1762 static void nl80211_destroy_bss(struct i802_bss *bss) 1763 { 1764 nl_cb_put(bss->nl_cb); 1765 bss->nl_cb = NULL; 1766 } 1767 1768 1769 static void 1770 wpa_driver_nl80211_drv_init_rfkill(struct wpa_driver_nl80211_data *drv) 1771 { 1772 struct rfkill_config *rcfg; 1773 1774 if (drv->rfkill) 1775 return; 1776 1777 rcfg = os_zalloc(sizeof(*rcfg)); 1778 if (!rcfg) 1779 return; 1780 1781 rcfg->ctx = drv; 1782 1783 /* rfkill uses netdev sysfs for initialization. However, P2P Device is 1784 * not associated with a netdev, so use the name of some other interface 1785 * sharing the same wiphy as the P2P Device interface. 1786 * 1787 * Note: This is valid, as a P2P Device interface is always dynamically 1788 * created and is created only once another wpa_s interface was added. 1789 */ 1790 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) { 1791 struct nl80211_global *global = drv->global; 1792 struct wpa_driver_nl80211_data *tmp1; 1793 1794 dl_list_for_each(tmp1, &global->interfaces, 1795 struct wpa_driver_nl80211_data, list) { 1796 if (drv == tmp1 || drv->wiphy_idx != tmp1->wiphy_idx || 1797 !tmp1->rfkill) 1798 continue; 1799 1800 wpa_printf(MSG_DEBUG, 1801 "nl80211: Use (%s) to initialize P2P Device rfkill", 1802 tmp1->first_bss->ifname); 1803 os_strlcpy(rcfg->ifname, tmp1->first_bss->ifname, 1804 sizeof(rcfg->ifname)); 1805 break; 1806 } 1807 } else { 1808 os_strlcpy(rcfg->ifname, drv->first_bss->ifname, 1809 sizeof(rcfg->ifname)); 1810 } 1811 1812 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked; 1813 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked; 1814 drv->rfkill = rfkill_init(rcfg); 1815 if (!drv->rfkill) { 1816 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available"); 1817 os_free(rcfg); 1818 } 1819 } 1820 1821 1822 static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname, 1823 void *global_priv, int hostapd, 1824 const u8 *set_addr, 1825 const char *driver_params) 1826 { 1827 struct wpa_driver_nl80211_data *drv; 1828 struct i802_bss *bss; 1829 1830 if (global_priv == NULL) 1831 return NULL; 1832 drv = os_zalloc(sizeof(*drv)); 1833 if (drv == NULL) 1834 return NULL; 1835 drv->global = global_priv; 1836 drv->ctx = ctx; 1837 drv->hostapd = !!hostapd; 1838 drv->eapol_sock = -1; 1839 1840 /* 1841 * There is no driver capability flag for this, so assume it is 1842 * supported and disable this on first attempt to use if the driver 1843 * rejects the command due to missing support. 1844 */ 1845 drv->set_rekey_offload = 1; 1846 1847 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int); 1848 drv->if_indices = drv->default_if_indices; 1849 drv->if_indices_reason = drv->default_if_indices_reason; 1850 1851 drv->first_bss = os_zalloc(sizeof(*drv->first_bss)); 1852 if (!drv->first_bss) { 1853 os_free(drv); 1854 return NULL; 1855 } 1856 bss = drv->first_bss; 1857 bss->drv = drv; 1858 bss->ctx = ctx; 1859 1860 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname)); 1861 drv->monitor_ifidx = -1; 1862 drv->monitor_sock = -1; 1863 drv->eapol_tx_sock = -1; 1864 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 1865 1866 if (nl80211_init_bss(bss)) 1867 goto failed; 1868 1869 if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1, driver_params)) 1870 goto failed; 1871 1872 drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0); 1873 if (drv->eapol_tx_sock < 0) 1874 goto failed; 1875 1876 if (drv->data_tx_status) { 1877 int enabled = 1; 1878 1879 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS, 1880 &enabled, sizeof(enabled)) < 0) { 1881 wpa_printf(MSG_DEBUG, 1882 "nl80211: wifi status sockopt failed\n"); 1883 drv->data_tx_status = 0; 1884 if (!drv->use_monitor) 1885 drv->capa.flags &= 1886 ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 1887 } else { 1888 eloop_register_read_sock(drv->eapol_tx_sock, 1889 wpa_driver_nl80211_handle_eapol_tx_status, 1890 drv, NULL); 1891 } 1892 } 1893 1894 if (drv->global) { 1895 nl80211_check_global(drv->global); 1896 dl_list_add(&drv->global->interfaces, &drv->list); 1897 drv->in_interface_list = 1; 1898 } 1899 1900 return bss; 1901 1902 failed: 1903 wpa_driver_nl80211_deinit(bss); 1904 return NULL; 1905 } 1906 1907 1908 /** 1909 * wpa_driver_nl80211_init - Initialize nl80211 driver interface 1910 * @ctx: context to be used when calling wpa_supplicant functions, 1911 * e.g., wpa_supplicant_event() 1912 * @ifname: interface name, e.g., wlan0 1913 * @global_priv: private driver global data from global_init() 1914 * Returns: Pointer to private data, %NULL on failure 1915 */ 1916 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname, 1917 void *global_priv) 1918 { 1919 return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL, 1920 NULL); 1921 } 1922 1923 1924 static int nl80211_register_frame(struct i802_bss *bss, 1925 struct nl_handle *nl_handle, 1926 u16 type, const u8 *match, size_t match_len) 1927 { 1928 struct wpa_driver_nl80211_data *drv = bss->drv; 1929 struct nl_msg *msg; 1930 int ret; 1931 char buf[30]; 1932 1933 buf[0] = '\0'; 1934 wpa_snprintf_hex(buf, sizeof(buf), match, match_len); 1935 wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x (%s) nl_handle=%p match=%s", 1936 type, fc2str(type), nl_handle, buf); 1937 1938 if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REGISTER_ACTION)) || 1939 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, type) || 1940 nla_put(msg, NL80211_ATTR_FRAME_MATCH, match_len, match)) { 1941 nlmsg_free(msg); 1942 return -1; 1943 } 1944 1945 ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL); 1946 if (ret) { 1947 wpa_printf(MSG_DEBUG, "nl80211: Register frame command " 1948 "failed (type=%u): ret=%d (%s)", 1949 type, ret, strerror(-ret)); 1950 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 1951 match, match_len); 1952 } 1953 return ret; 1954 } 1955 1956 1957 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss) 1958 { 1959 if (bss->nl_mgmt) { 1960 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting " 1961 "already on! (nl_mgmt=%p)", bss->nl_mgmt); 1962 return -1; 1963 } 1964 1965 bss->nl_mgmt = nl_create_handle(bss->nl_cb, "mgmt"); 1966 if (bss->nl_mgmt == NULL) 1967 return -1; 1968 1969 return 0; 1970 } 1971 1972 1973 static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss) 1974 { 1975 nl80211_register_eloop_read(&bss->nl_mgmt, 1976 wpa_driver_nl80211_event_receive, 1977 bss->nl_cb); 1978 } 1979 1980 1981 static int nl80211_register_action_frame(struct i802_bss *bss, 1982 const u8 *match, size_t match_len) 1983 { 1984 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4); 1985 return nl80211_register_frame(bss, bss->nl_mgmt, 1986 type, match, match_len); 1987 } 1988 1989 1990 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss) 1991 { 1992 struct wpa_driver_nl80211_data *drv = bss->drv; 1993 int ret = 0; 1994 1995 if (nl80211_alloc_mgmt_handle(bss)) 1996 return -1; 1997 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP " 1998 "handle %p", bss->nl_mgmt); 1999 2000 if (drv->nlmode == NL80211_IFTYPE_ADHOC) { 2001 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4); 2002 2003 /* register for any AUTH message */ 2004 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0); 2005 } 2006 2007 #ifdef CONFIG_INTERWORKING 2008 /* QoS Map Configure */ 2009 if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0) 2010 ret = -1; 2011 #endif /* CONFIG_INTERWORKING */ 2012 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING) 2013 /* GAS Initial Request */ 2014 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0) 2015 ret = -1; 2016 /* GAS Initial Response */ 2017 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0) 2018 ret = -1; 2019 /* GAS Comeback Request */ 2020 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0) 2021 ret = -1; 2022 /* GAS Comeback Response */ 2023 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0) 2024 ret = -1; 2025 /* Protected GAS Initial Request */ 2026 if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0) 2027 ret = -1; 2028 /* Protected GAS Initial Response */ 2029 if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0) 2030 ret = -1; 2031 /* Protected GAS Comeback Request */ 2032 if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0) 2033 ret = -1; 2034 /* Protected GAS Comeback Response */ 2035 if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0) 2036 ret = -1; 2037 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */ 2038 #ifdef CONFIG_P2P 2039 /* P2P Public Action */ 2040 if (nl80211_register_action_frame(bss, 2041 (u8 *) "\x04\x09\x50\x6f\x9a\x09", 2042 6) < 0) 2043 ret = -1; 2044 /* P2P Action */ 2045 if (nl80211_register_action_frame(bss, 2046 (u8 *) "\x7f\x50\x6f\x9a\x09", 2047 5) < 0) 2048 ret = -1; 2049 #endif /* CONFIG_P2P */ 2050 #ifdef CONFIG_IEEE80211W 2051 /* SA Query Response */ 2052 if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0) 2053 ret = -1; 2054 #endif /* CONFIG_IEEE80211W */ 2055 #ifdef CONFIG_TDLS 2056 if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) { 2057 /* TDLS Discovery Response */ 2058 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) < 2059 0) 2060 ret = -1; 2061 } 2062 #endif /* CONFIG_TDLS */ 2063 #ifdef CONFIG_FST 2064 /* FST Action frames */ 2065 if (nl80211_register_action_frame(bss, (u8 *) "\x12", 1) < 0) 2066 ret = -1; 2067 #endif /* CONFIG_FST */ 2068 2069 /* FT Action frames */ 2070 if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0) 2071 ret = -1; 2072 else 2073 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT | 2074 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK; 2075 2076 /* WNM - BSS Transition Management Request */ 2077 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0) 2078 ret = -1; 2079 /* WNM-Sleep Mode Response */ 2080 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0) 2081 ret = -1; 2082 2083 #ifdef CONFIG_HS20 2084 /* WNM-Notification */ 2085 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x1a", 2) < 0) 2086 ret = -1; 2087 #endif /* CONFIG_HS20 */ 2088 2089 /* WMM-AC ADDTS Response */ 2090 if (nl80211_register_action_frame(bss, (u8 *) "\x11\x01", 2) < 0) 2091 ret = -1; 2092 2093 /* WMM-AC DELTS */ 2094 if (nl80211_register_action_frame(bss, (u8 *) "\x11\x02", 2) < 0) 2095 ret = -1; 2096 2097 /* Radio Measurement - Neighbor Report Response */ 2098 if (nl80211_register_action_frame(bss, (u8 *) "\x05\x05", 2) < 0) 2099 ret = -1; 2100 2101 /* Radio Measurement - Radio Measurement Request */ 2102 if (nl80211_register_action_frame(bss, (u8 *) "\x05\x00", 2) < 0) 2103 ret = -1; 2104 2105 /* Radio Measurement - Link Measurement Request */ 2106 if ((drv->capa.rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION) && 2107 (nl80211_register_action_frame(bss, (u8 *) "\x05\x02", 2) < 0)) 2108 ret = -1; 2109 2110 nl80211_mgmt_handle_register_eloop(bss); 2111 2112 return ret; 2113 } 2114 2115 2116 static int nl80211_mgmt_subscribe_mesh(struct i802_bss *bss) 2117 { 2118 int ret = 0; 2119 2120 if (nl80211_alloc_mgmt_handle(bss)) 2121 return -1; 2122 2123 wpa_printf(MSG_DEBUG, 2124 "nl80211: Subscribe to mgmt frames with mesh handle %p", 2125 bss->nl_mgmt); 2126 2127 /* Auth frames for mesh SAE */ 2128 if (nl80211_register_frame(bss, bss->nl_mgmt, 2129 (WLAN_FC_TYPE_MGMT << 2) | 2130 (WLAN_FC_STYPE_AUTH << 4), 2131 NULL, 0) < 0) 2132 ret = -1; 2133 2134 /* Mesh peering open */ 2135 if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x01", 2) < 0) 2136 ret = -1; 2137 /* Mesh peering confirm */ 2138 if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x02", 2) < 0) 2139 ret = -1; 2140 /* Mesh peering close */ 2141 if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x03", 2) < 0) 2142 ret = -1; 2143 2144 nl80211_mgmt_handle_register_eloop(bss); 2145 2146 return ret; 2147 } 2148 2149 2150 static int nl80211_register_spurious_class3(struct i802_bss *bss) 2151 { 2152 struct nl_msg *msg; 2153 int ret; 2154 2155 msg = nl80211_bss_msg(bss, 0, NL80211_CMD_UNEXPECTED_FRAME); 2156 ret = send_and_recv(bss->drv->global, bss->nl_mgmt, msg, NULL, NULL); 2157 if (ret) { 2158 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 " 2159 "failed: ret=%d (%s)", 2160 ret, strerror(-ret)); 2161 } 2162 return ret; 2163 } 2164 2165 2166 static int nl80211_action_subscribe_ap(struct i802_bss *bss) 2167 { 2168 int ret = 0; 2169 2170 /* Public Action frames */ 2171 if (nl80211_register_action_frame(bss, (u8 *) "\x04", 1) < 0) 2172 ret = -1; 2173 /* RRM Measurement Report */ 2174 if (nl80211_register_action_frame(bss, (u8 *) "\x05\x01", 2) < 0) 2175 ret = -1; 2176 /* RRM Link Measurement Report */ 2177 if (nl80211_register_action_frame(bss, (u8 *) "\x05\x03", 2) < 0) 2178 ret = -1; 2179 /* RRM Neighbor Report Request */ 2180 if (nl80211_register_action_frame(bss, (u8 *) "\x05\x04", 2) < 0) 2181 ret = -1; 2182 /* FT Action frames */ 2183 if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0) 2184 ret = -1; 2185 #ifdef CONFIG_IEEE80211W 2186 /* SA Query */ 2187 if (nl80211_register_action_frame(bss, (u8 *) "\x08", 1) < 0) 2188 ret = -1; 2189 #endif /* CONFIG_IEEE80211W */ 2190 /* Protected Dual of Public Action */ 2191 if (nl80211_register_action_frame(bss, (u8 *) "\x09", 1) < 0) 2192 ret = -1; 2193 /* WNM */ 2194 if (nl80211_register_action_frame(bss, (u8 *) "\x0a", 1) < 0) 2195 ret = -1; 2196 /* WMM */ 2197 if (nl80211_register_action_frame(bss, (u8 *) "\x11", 1) < 0) 2198 ret = -1; 2199 #ifdef CONFIG_FST 2200 /* FST Action frames */ 2201 if (nl80211_register_action_frame(bss, (u8 *) "\x12", 1) < 0) 2202 ret = -1; 2203 #endif /* CONFIG_FST */ 2204 /* Vendor-specific */ 2205 if (nl80211_register_action_frame(bss, (u8 *) "\x7f", 1) < 0) 2206 ret = -1; 2207 2208 return ret; 2209 } 2210 2211 2212 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss) 2213 { 2214 static const int stypes[] = { 2215 WLAN_FC_STYPE_AUTH, 2216 WLAN_FC_STYPE_ASSOC_REQ, 2217 WLAN_FC_STYPE_REASSOC_REQ, 2218 WLAN_FC_STYPE_DISASSOC, 2219 WLAN_FC_STYPE_DEAUTH, 2220 WLAN_FC_STYPE_PROBE_REQ, 2221 /* Beacon doesn't work as mac80211 doesn't currently allow 2222 * it, but it wouldn't really be the right thing anyway as 2223 * it isn't per interface ... maybe just dump the scan 2224 * results periodically for OLBC? 2225 */ 2226 /* WLAN_FC_STYPE_BEACON, */ 2227 }; 2228 unsigned int i; 2229 2230 if (nl80211_alloc_mgmt_handle(bss)) 2231 return -1; 2232 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 2233 "handle %p", bss->nl_mgmt); 2234 2235 for (i = 0; i < ARRAY_SIZE(stypes); i++) { 2236 if (nl80211_register_frame(bss, bss->nl_mgmt, 2237 (WLAN_FC_TYPE_MGMT << 2) | 2238 (stypes[i] << 4), 2239 NULL, 0) < 0) { 2240 goto out_err; 2241 } 2242 } 2243 2244 if (nl80211_action_subscribe_ap(bss)) 2245 goto out_err; 2246 2247 if (nl80211_register_spurious_class3(bss)) 2248 goto out_err; 2249 2250 nl80211_mgmt_handle_register_eloop(bss); 2251 return 0; 2252 2253 out_err: 2254 nl_destroy_handles(&bss->nl_mgmt); 2255 return -1; 2256 } 2257 2258 2259 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss) 2260 { 2261 if (nl80211_alloc_mgmt_handle(bss)) 2262 return -1; 2263 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 2264 "handle %p (device SME)", bss->nl_mgmt); 2265 2266 if (nl80211_action_subscribe_ap(bss)) 2267 goto out_err; 2268 2269 nl80211_mgmt_handle_register_eloop(bss); 2270 return 0; 2271 2272 out_err: 2273 nl_destroy_handles(&bss->nl_mgmt); 2274 return -1; 2275 } 2276 2277 2278 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason) 2279 { 2280 if (bss->nl_mgmt == NULL) 2281 return; 2282 wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p " 2283 "(%s)", bss->nl_mgmt, reason); 2284 nl80211_destroy_eloop_handle(&bss->nl_mgmt); 2285 2286 nl80211_put_wiphy_data_ap(bss); 2287 } 2288 2289 2290 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx) 2291 { 2292 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL); 2293 } 2294 2295 2296 static void nl80211_del_p2pdev(struct i802_bss *bss) 2297 { 2298 struct nl_msg *msg; 2299 int ret; 2300 2301 msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_INTERFACE); 2302 ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL); 2303 2304 wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s", 2305 bss->ifname, (long long unsigned int) bss->wdev_id, 2306 strerror(-ret)); 2307 } 2308 2309 2310 static int nl80211_set_p2pdev(struct i802_bss *bss, int start) 2311 { 2312 struct nl_msg *msg; 2313 int ret; 2314 2315 msg = nl80211_cmd_msg(bss, 0, start ? NL80211_CMD_START_P2P_DEVICE : 2316 NL80211_CMD_STOP_P2P_DEVICE); 2317 ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL); 2318 2319 wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s", 2320 start ? "Start" : "Stop", 2321 bss->ifname, (long long unsigned int) bss->wdev_id, 2322 strerror(-ret)); 2323 return ret; 2324 } 2325 2326 2327 static int i802_set_iface_flags(struct i802_bss *bss, int up) 2328 { 2329 enum nl80211_iftype nlmode; 2330 2331 nlmode = nl80211_get_ifmode(bss); 2332 if (nlmode != NL80211_IFTYPE_P2P_DEVICE) { 2333 return linux_set_iface_flags(bss->drv->global->ioctl_sock, 2334 bss->ifname, up); 2335 } 2336 2337 /* P2P Device has start/stop which is equivalent */ 2338 return nl80211_set_p2pdev(bss, up); 2339 } 2340 2341 2342 #ifdef CONFIG_TESTING_OPTIONS 2343 static int qca_vendor_test_cmd_handler(struct nl_msg *msg, void *arg) 2344 { 2345 /* struct wpa_driver_nl80211_data *drv = arg; */ 2346 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2347 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2348 2349 2350 wpa_printf(MSG_DEBUG, 2351 "nl80211: QCA vendor test command response received"); 2352 2353 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2354 genlmsg_attrlen(gnlh, 0), NULL); 2355 if (!tb[NL80211_ATTR_VENDOR_DATA]) { 2356 wpa_printf(MSG_DEBUG, "nl80211: No vendor data attribute"); 2357 return NL_SKIP; 2358 } 2359 2360 wpa_hexdump(MSG_DEBUG, 2361 "nl80211: Received QCA vendor test command response", 2362 nla_data(tb[NL80211_ATTR_VENDOR_DATA]), 2363 nla_len(tb[NL80211_ATTR_VENDOR_DATA])); 2364 2365 return NL_SKIP; 2366 } 2367 #endif /* CONFIG_TESTING_OPTIONS */ 2368 2369 2370 static void qca_vendor_test(struct wpa_driver_nl80211_data *drv) 2371 { 2372 #ifdef CONFIG_TESTING_OPTIONS 2373 struct nl_msg *msg; 2374 struct nlattr *params; 2375 int ret; 2376 2377 if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) || 2378 nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) || 2379 nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, 2380 QCA_NL80211_VENDOR_SUBCMD_TEST) || 2381 !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) || 2382 nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_TEST, 123)) { 2383 nlmsg_free(msg); 2384 return; 2385 } 2386 nla_nest_end(msg, params); 2387 2388 ret = send_and_recv_msgs(drv, msg, qca_vendor_test_cmd_handler, drv); 2389 wpa_printf(MSG_DEBUG, 2390 "nl80211: QCA vendor test command returned %d (%s)", 2391 ret, strerror(-ret)); 2392 #endif /* CONFIG_TESTING_OPTIONS */ 2393 } 2394 2395 2396 static int 2397 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv, 2398 const u8 *set_addr, int first, 2399 const char *driver_params) 2400 { 2401 struct i802_bss *bss = drv->first_bss; 2402 int send_rfkill_event = 0; 2403 enum nl80211_iftype nlmode; 2404 2405 drv->ifindex = if_nametoindex(bss->ifname); 2406 bss->ifindex = drv->ifindex; 2407 bss->wdev_id = drv->global->if_add_wdevid; 2408 bss->wdev_id_set = drv->global->if_add_wdevid_set; 2409 2410 bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex; 2411 bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set; 2412 drv->global->if_add_wdevid_set = 0; 2413 2414 if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP) 2415 bss->static_ap = 1; 2416 2417 if (first && 2418 nl80211_get_ifmode(bss) != NL80211_IFTYPE_P2P_DEVICE && 2419 linux_iface_up(drv->global->ioctl_sock, bss->ifname) > 0) 2420 drv->start_iface_up = 1; 2421 2422 if (wpa_driver_nl80211_capa(drv)) 2423 return -1; 2424 2425 if (driver_params && nl80211_set_param(bss, driver_params) < 0) 2426 return -1; 2427 2428 wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s", 2429 bss->ifname, drv->phyname); 2430 2431 if (set_addr && 2432 (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) || 2433 linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 2434 set_addr))) 2435 return -1; 2436 2437 if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP) 2438 drv->start_mode_ap = 1; 2439 2440 if (drv->hostapd || bss->static_ap) 2441 nlmode = NL80211_IFTYPE_AP; 2442 else if (bss->if_dynamic || 2443 nl80211_get_ifmode(bss) == NL80211_IFTYPE_MESH_POINT) 2444 nlmode = nl80211_get_ifmode(bss); 2445 else 2446 nlmode = NL80211_IFTYPE_STATION; 2447 2448 if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) { 2449 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode"); 2450 return -1; 2451 } 2452 2453 if (nlmode == NL80211_IFTYPE_P2P_DEVICE) 2454 nl80211_get_macaddr(bss); 2455 2456 wpa_driver_nl80211_drv_init_rfkill(drv); 2457 2458 if (!rfkill_is_blocked(drv->rfkill)) { 2459 int ret = i802_set_iface_flags(bss, 1); 2460 if (ret) { 2461 wpa_printf(MSG_ERROR, "nl80211: Could not set " 2462 "interface '%s' UP", bss->ifname); 2463 return ret; 2464 } 2465 2466 if (is_p2p_net_interface(nlmode)) 2467 nl80211_disable_11b_rates(bss->drv, 2468 bss->drv->ifindex, 1); 2469 2470 if (nlmode == NL80211_IFTYPE_P2P_DEVICE) 2471 return ret; 2472 } else { 2473 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable " 2474 "interface '%s' due to rfkill", bss->ifname); 2475 if (nlmode != NL80211_IFTYPE_P2P_DEVICE) 2476 drv->if_disabled = 1; 2477 2478 send_rfkill_event = 1; 2479 } 2480 2481 if (!drv->hostapd && nlmode != NL80211_IFTYPE_P2P_DEVICE) 2482 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 2483 1, IF_OPER_DORMANT); 2484 2485 if (nlmode != NL80211_IFTYPE_P2P_DEVICE) { 2486 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 2487 bss->addr)) 2488 return -1; 2489 os_memcpy(drv->perm_addr, bss->addr, ETH_ALEN); 2490 } 2491 2492 if (send_rfkill_event) { 2493 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill, 2494 drv, drv->ctx); 2495 } 2496 2497 if (drv->vendor_cmd_test_avail) 2498 qca_vendor_test(drv); 2499 2500 return 0; 2501 } 2502 2503 2504 static int wpa_driver_nl80211_del_beacon(struct i802_bss *bss) 2505 { 2506 struct nl_msg *msg; 2507 struct wpa_driver_nl80211_data *drv = bss->drv; 2508 2509 wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)", 2510 drv->ifindex); 2511 nl80211_put_wiphy_data_ap(bss); 2512 msg = nl80211_drv_msg(drv, 0, NL80211_CMD_DEL_BEACON); 2513 return send_and_recv_msgs(drv, msg, NULL, NULL); 2514 } 2515 2516 2517 /** 2518 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface 2519 * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init() 2520 * 2521 * Shut down driver interface and processing of driver events. Free 2522 * private data buffer if one was allocated in wpa_driver_nl80211_init(). 2523 */ 2524 static void wpa_driver_nl80211_deinit(struct i802_bss *bss) 2525 { 2526 struct wpa_driver_nl80211_data *drv = bss->drv; 2527 unsigned int i; 2528 2529 wpa_printf(MSG_INFO, "nl80211: deinit ifname=%s disabled_11b_rates=%d", 2530 bss->ifname, drv->disabled_11b_rates); 2531 2532 bss->in_deinit = 1; 2533 if (drv->data_tx_status) 2534 eloop_unregister_read_sock(drv->eapol_tx_sock); 2535 if (drv->eapol_tx_sock >= 0) 2536 close(drv->eapol_tx_sock); 2537 2538 if (bss->nl_preq) 2539 wpa_driver_nl80211_probe_req_report(bss, 0); 2540 if (bss->added_if_into_bridge) { 2541 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 2542 bss->ifname) < 0) 2543 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 2544 "interface %s from bridge %s: %s", 2545 bss->ifname, bss->brname, strerror(errno)); 2546 if (drv->rtnl_sk) 2547 nl80211_handle_destroy(drv->rtnl_sk); 2548 } 2549 if (bss->added_bridge) { 2550 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->brname, 2551 0) < 0) 2552 wpa_printf(MSG_INFO, 2553 "nl80211: Could not set bridge %s down", 2554 bss->brname); 2555 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 2556 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 2557 "bridge %s: %s", 2558 bss->brname, strerror(errno)); 2559 } 2560 2561 nl80211_remove_monitor_interface(drv); 2562 2563 if (is_ap_interface(drv->nlmode)) 2564 wpa_driver_nl80211_del_beacon(bss); 2565 2566 if (drv->eapol_sock >= 0) { 2567 eloop_unregister_read_sock(drv->eapol_sock); 2568 close(drv->eapol_sock); 2569 } 2570 2571 if (drv->if_indices != drv->default_if_indices) 2572 os_free(drv->if_indices); 2573 2574 if (drv->if_indices_reason != drv->default_if_indices_reason) 2575 os_free(drv->if_indices_reason); 2576 2577 if (drv->disabled_11b_rates) 2578 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 2579 2580 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0, 2581 IF_OPER_UP); 2582 eloop_cancel_timeout(wpa_driver_nl80211_send_rfkill, drv, drv->ctx); 2583 rfkill_deinit(drv->rfkill); 2584 2585 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 2586 2587 if (!drv->start_iface_up) 2588 (void) i802_set_iface_flags(bss, 0); 2589 2590 if (drv->addr_changed) { 2591 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 2592 0) < 0) { 2593 wpa_printf(MSG_DEBUG, 2594 "nl80211: Could not set interface down to restore permanent MAC address"); 2595 } 2596 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 2597 drv->perm_addr) < 0) { 2598 wpa_printf(MSG_DEBUG, 2599 "nl80211: Could not restore permanent MAC address"); 2600 } 2601 } 2602 2603 if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) { 2604 if (!drv->hostapd || !drv->start_mode_ap) 2605 wpa_driver_nl80211_set_mode(bss, 2606 NL80211_IFTYPE_STATION); 2607 nl80211_mgmt_unsubscribe(bss, "deinit"); 2608 } else { 2609 nl80211_mgmt_unsubscribe(bss, "deinit"); 2610 nl80211_del_p2pdev(bss); 2611 } 2612 2613 nl80211_destroy_bss(drv->first_bss); 2614 2615 os_free(drv->filter_ssids); 2616 2617 os_free(drv->auth_ie); 2618 2619 if (drv->in_interface_list) 2620 dl_list_del(&drv->list); 2621 2622 os_free(drv->extended_capa); 2623 os_free(drv->extended_capa_mask); 2624 for (i = 0; i < drv->num_iface_ext_capa; i++) { 2625 os_free(drv->iface_ext_capa[i].ext_capa); 2626 os_free(drv->iface_ext_capa[i].ext_capa_mask); 2627 } 2628 os_free(drv->first_bss); 2629 os_free(drv); 2630 } 2631 2632 2633 static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len) 2634 { 2635 switch (alg) { 2636 case WPA_ALG_WEP: 2637 if (key_len == 5) 2638 return RSN_CIPHER_SUITE_WEP40; 2639 return RSN_CIPHER_SUITE_WEP104; 2640 case WPA_ALG_TKIP: 2641 return RSN_CIPHER_SUITE_TKIP; 2642 case WPA_ALG_CCMP: 2643 return RSN_CIPHER_SUITE_CCMP; 2644 case WPA_ALG_GCMP: 2645 return RSN_CIPHER_SUITE_GCMP; 2646 case WPA_ALG_CCMP_256: 2647 return RSN_CIPHER_SUITE_CCMP_256; 2648 case WPA_ALG_GCMP_256: 2649 return RSN_CIPHER_SUITE_GCMP_256; 2650 case WPA_ALG_IGTK: 2651 return RSN_CIPHER_SUITE_AES_128_CMAC; 2652 case WPA_ALG_BIP_GMAC_128: 2653 return RSN_CIPHER_SUITE_BIP_GMAC_128; 2654 case WPA_ALG_BIP_GMAC_256: 2655 return RSN_CIPHER_SUITE_BIP_GMAC_256; 2656 case WPA_ALG_BIP_CMAC_256: 2657 return RSN_CIPHER_SUITE_BIP_CMAC_256; 2658 case WPA_ALG_SMS4: 2659 return RSN_CIPHER_SUITE_SMS4; 2660 case WPA_ALG_KRK: 2661 return RSN_CIPHER_SUITE_KRK; 2662 case WPA_ALG_NONE: 2663 case WPA_ALG_PMK: 2664 wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d", 2665 alg); 2666 return 0; 2667 } 2668 2669 wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d", 2670 alg); 2671 return 0; 2672 } 2673 2674 2675 static u32 wpa_cipher_to_cipher_suite(unsigned int cipher) 2676 { 2677 switch (cipher) { 2678 case WPA_CIPHER_CCMP_256: 2679 return RSN_CIPHER_SUITE_CCMP_256; 2680 case WPA_CIPHER_GCMP_256: 2681 return RSN_CIPHER_SUITE_GCMP_256; 2682 case WPA_CIPHER_CCMP: 2683 return RSN_CIPHER_SUITE_CCMP; 2684 case WPA_CIPHER_GCMP: 2685 return RSN_CIPHER_SUITE_GCMP; 2686 case WPA_CIPHER_TKIP: 2687 return RSN_CIPHER_SUITE_TKIP; 2688 case WPA_CIPHER_WEP104: 2689 return RSN_CIPHER_SUITE_WEP104; 2690 case WPA_CIPHER_WEP40: 2691 return RSN_CIPHER_SUITE_WEP40; 2692 case WPA_CIPHER_GTK_NOT_USED: 2693 return RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED; 2694 } 2695 2696 return 0; 2697 } 2698 2699 2700 static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[], 2701 int max_suites) 2702 { 2703 int num_suites = 0; 2704 2705 if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256) 2706 suites[num_suites++] = RSN_CIPHER_SUITE_CCMP_256; 2707 if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256) 2708 suites[num_suites++] = RSN_CIPHER_SUITE_GCMP_256; 2709 if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP) 2710 suites[num_suites++] = RSN_CIPHER_SUITE_CCMP; 2711 if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP) 2712 suites[num_suites++] = RSN_CIPHER_SUITE_GCMP; 2713 if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP) 2714 suites[num_suites++] = RSN_CIPHER_SUITE_TKIP; 2715 if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104) 2716 suites[num_suites++] = RSN_CIPHER_SUITE_WEP104; 2717 if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40) 2718 suites[num_suites++] = RSN_CIPHER_SUITE_WEP40; 2719 2720 return num_suites; 2721 } 2722 2723 2724 #ifdef CONFIG_DRIVER_NL80211_QCA 2725 static int issue_key_mgmt_set_key(struct wpa_driver_nl80211_data *drv, 2726 const u8 *key, size_t key_len) 2727 { 2728 struct nl_msg *msg; 2729 int ret; 2730 2731 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD)) 2732 return 0; 2733 2734 if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) || 2735 nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) || 2736 nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, 2737 QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY) || 2738 nla_put(msg, NL80211_ATTR_VENDOR_DATA, key_len, key)) { 2739 nl80211_nlmsg_clear(msg); 2740 nlmsg_free(msg); 2741 return -1; 2742 } 2743 ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1); 2744 if (ret) { 2745 wpa_printf(MSG_DEBUG, 2746 "nl80211: Key management set key failed: ret=%d (%s)", 2747 ret, strerror(-ret)); 2748 } 2749 2750 return ret; 2751 } 2752 #endif /* CONFIG_DRIVER_NL80211_QCA */ 2753 2754 2755 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss, 2756 enum wpa_alg alg, const u8 *addr, 2757 int key_idx, int set_tx, 2758 const u8 *seq, size_t seq_len, 2759 const u8 *key, size_t key_len) 2760 { 2761 struct wpa_driver_nl80211_data *drv = bss->drv; 2762 int ifindex; 2763 struct nl_msg *msg = NULL; 2764 int ret; 2765 int tdls = 0; 2766 2767 /* Ignore for P2P Device */ 2768 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) 2769 return 0; 2770 2771 ifindex = if_nametoindex(ifname); 2772 wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d " 2773 "set_tx=%d seq_len=%lu key_len=%lu", 2774 __func__, ifindex, ifname, alg, addr, key_idx, set_tx, 2775 (unsigned long) seq_len, (unsigned long) key_len); 2776 #ifdef CONFIG_TDLS 2777 if (key_idx == -1) { 2778 key_idx = 0; 2779 tdls = 1; 2780 } 2781 #endif /* CONFIG_TDLS */ 2782 2783 #ifdef CONFIG_DRIVER_NL80211_QCA 2784 if (alg == WPA_ALG_PMK && 2785 (drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD)) { 2786 wpa_printf(MSG_DEBUG, "%s: calling issue_key_mgmt_set_key", 2787 __func__); 2788 ret = issue_key_mgmt_set_key(drv, key, key_len); 2789 return ret; 2790 } 2791 #endif /* CONFIG_DRIVER_NL80211_QCA */ 2792 2793 if (alg == WPA_ALG_NONE) { 2794 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_DEL_KEY); 2795 if (!msg) 2796 return -ENOBUFS; 2797 } else { 2798 u32 suite; 2799 2800 suite = wpa_alg_to_cipher_suite(alg, key_len); 2801 if (!suite) 2802 goto fail; 2803 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_NEW_KEY); 2804 if (!msg || 2805 nla_put(msg, NL80211_ATTR_KEY_DATA, key_len, key) || 2806 nla_put_u32(msg, NL80211_ATTR_KEY_CIPHER, suite)) 2807 goto fail; 2808 wpa_hexdump_key(MSG_DEBUG, "nl80211: KEY_DATA", key, key_len); 2809 } 2810 2811 if (seq && seq_len) { 2812 if (nla_put(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq)) 2813 goto fail; 2814 wpa_hexdump(MSG_DEBUG, "nl80211: KEY_SEQ", seq, seq_len); 2815 } 2816 2817 if (addr && !is_broadcast_ether_addr(addr)) { 2818 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr)); 2819 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 2820 goto fail; 2821 2822 if (alg != WPA_ALG_WEP && key_idx && !set_tx) { 2823 wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK"); 2824 if (nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, 2825 NL80211_KEYTYPE_GROUP)) 2826 goto fail; 2827 } 2828 } else if (addr && is_broadcast_ether_addr(addr)) { 2829 struct nlattr *types; 2830 2831 wpa_printf(MSG_DEBUG, " broadcast key"); 2832 2833 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES); 2834 if (!types || 2835 nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST)) 2836 goto fail; 2837 nla_nest_end(msg, types); 2838 } 2839 if (nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx)) 2840 goto fail; 2841 2842 ret = send_and_recv_msgs(drv, msg, NULL, key ? (void *) -1 : NULL); 2843 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE) 2844 ret = 0; 2845 if (ret) 2846 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)", 2847 ret, strerror(-ret)); 2848 2849 /* 2850 * If we failed or don't need to set the default TX key (below), 2851 * we're done here. 2852 */ 2853 if (ret || !set_tx || alg == WPA_ALG_NONE || tdls) 2854 return ret; 2855 if (is_ap_interface(drv->nlmode) && addr && 2856 !is_broadcast_ether_addr(addr)) 2857 return ret; 2858 2859 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_SET_KEY); 2860 if (!msg || 2861 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx) || 2862 nla_put_flag(msg, (alg == WPA_ALG_IGTK || 2863 alg == WPA_ALG_BIP_GMAC_128 || 2864 alg == WPA_ALG_BIP_GMAC_256 || 2865 alg == WPA_ALG_BIP_CMAC_256) ? 2866 NL80211_ATTR_KEY_DEFAULT_MGMT : 2867 NL80211_ATTR_KEY_DEFAULT)) 2868 goto fail; 2869 if (addr && is_broadcast_ether_addr(addr)) { 2870 struct nlattr *types; 2871 2872 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES); 2873 if (!types || 2874 nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST)) 2875 goto fail; 2876 nla_nest_end(msg, types); 2877 } else if (addr) { 2878 struct nlattr *types; 2879 2880 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES); 2881 if (!types || 2882 nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST)) 2883 goto fail; 2884 nla_nest_end(msg, types); 2885 } 2886 2887 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 2888 if (ret == -ENOENT) 2889 ret = 0; 2890 if (ret) 2891 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; " 2892 "err=%d %s)", ret, strerror(-ret)); 2893 return ret; 2894 2895 fail: 2896 nl80211_nlmsg_clear(msg); 2897 nlmsg_free(msg); 2898 return -ENOBUFS; 2899 } 2900 2901 2902 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg, 2903 int key_idx, int defkey, 2904 const u8 *seq, size_t seq_len, 2905 const u8 *key, size_t key_len) 2906 { 2907 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY); 2908 u32 suite; 2909 2910 if (!key_attr) 2911 return -1; 2912 2913 suite = wpa_alg_to_cipher_suite(alg, key_len); 2914 if (!suite) 2915 return -1; 2916 2917 if (defkey && alg == WPA_ALG_IGTK) { 2918 if (nla_put_flag(msg, NL80211_KEY_DEFAULT_MGMT)) 2919 return -1; 2920 } else if (defkey) { 2921 if (nla_put_flag(msg, NL80211_KEY_DEFAULT)) 2922 return -1; 2923 } 2924 2925 if (nla_put_u8(msg, NL80211_KEY_IDX, key_idx) || 2926 nla_put_u32(msg, NL80211_KEY_CIPHER, suite) || 2927 (seq && seq_len && 2928 nla_put(msg, NL80211_KEY_SEQ, seq_len, seq)) || 2929 nla_put(msg, NL80211_KEY_DATA, key_len, key)) 2930 return -1; 2931 2932 nla_nest_end(msg, key_attr); 2933 2934 return 0; 2935 } 2936 2937 2938 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params, 2939 struct nl_msg *msg) 2940 { 2941 int i, privacy = 0; 2942 struct nlattr *nl_keys, *nl_key; 2943 2944 for (i = 0; i < 4; i++) { 2945 if (!params->wep_key[i]) 2946 continue; 2947 privacy = 1; 2948 break; 2949 } 2950 if (params->wps == WPS_MODE_PRIVACY) 2951 privacy = 1; 2952 if (params->pairwise_suite && 2953 params->pairwise_suite != WPA_CIPHER_NONE) 2954 privacy = 1; 2955 2956 if (!privacy) 2957 return 0; 2958 2959 if (nla_put_flag(msg, NL80211_ATTR_PRIVACY)) 2960 return -ENOBUFS; 2961 2962 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS); 2963 if (!nl_keys) 2964 return -ENOBUFS; 2965 2966 for (i = 0; i < 4; i++) { 2967 if (!params->wep_key[i]) 2968 continue; 2969 2970 nl_key = nla_nest_start(msg, i); 2971 if (!nl_key || 2972 nla_put(msg, NL80211_KEY_DATA, params->wep_key_len[i], 2973 params->wep_key[i]) || 2974 nla_put_u32(msg, NL80211_KEY_CIPHER, 2975 params->wep_key_len[i] == 5 ? 2976 RSN_CIPHER_SUITE_WEP40 : 2977 RSN_CIPHER_SUITE_WEP104) || 2978 nla_put_u8(msg, NL80211_KEY_IDX, i) || 2979 (i == params->wep_tx_keyidx && 2980 nla_put_flag(msg, NL80211_KEY_DEFAULT))) 2981 return -ENOBUFS; 2982 2983 nla_nest_end(msg, nl_key); 2984 } 2985 nla_nest_end(msg, nl_keys); 2986 2987 return 0; 2988 } 2989 2990 2991 int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 2992 const u8 *addr, int cmd, u16 reason_code, 2993 int local_state_change) 2994 { 2995 int ret; 2996 struct nl_msg *msg; 2997 2998 if (!(msg = nl80211_drv_msg(drv, 0, cmd)) || 2999 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code) || 3000 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) || 3001 (local_state_change && 3002 nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))) { 3003 nlmsg_free(msg); 3004 return -1; 3005 } 3006 3007 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3008 if (ret) { 3009 wpa_dbg(drv->ctx, MSG_DEBUG, 3010 "nl80211: MLME command failed: reason=%u ret=%d (%s)", 3011 reason_code, ret, strerror(-ret)); 3012 } 3013 return ret; 3014 } 3015 3016 3017 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv, 3018 int reason_code) 3019 { 3020 int ret; 3021 3022 wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code); 3023 nl80211_mark_disconnected(drv); 3024 /* Disconnect command doesn't need BSSID - it uses cached value */ 3025 ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT, 3026 reason_code, 0); 3027 /* 3028 * For locally generated disconnect, supplicant already generates a 3029 * DEAUTH event, so ignore the event from NL80211. 3030 */ 3031 drv->ignore_next_local_disconnect = ret == 0; 3032 3033 return ret; 3034 } 3035 3036 3037 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss, 3038 const u8 *addr, int reason_code) 3039 { 3040 struct wpa_driver_nl80211_data *drv = bss->drv; 3041 int ret; 3042 3043 if (drv->nlmode == NL80211_IFTYPE_ADHOC) { 3044 nl80211_mark_disconnected(drv); 3045 return nl80211_leave_ibss(drv, 1); 3046 } 3047 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) 3048 return wpa_driver_nl80211_disconnect(drv, reason_code); 3049 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)", 3050 __func__, MAC2STR(addr), reason_code); 3051 nl80211_mark_disconnected(drv); 3052 ret = wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE, 3053 reason_code, 0); 3054 /* 3055 * For locally generated deauthenticate, supplicant already generates a 3056 * DEAUTH event, so ignore the event from NL80211. 3057 */ 3058 drv->ignore_next_local_deauth = ret == 0; 3059 return ret; 3060 } 3061 3062 3063 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv, 3064 struct wpa_driver_auth_params *params) 3065 { 3066 int i; 3067 3068 drv->auth_freq = params->freq; 3069 drv->auth_alg = params->auth_alg; 3070 drv->auth_wep_tx_keyidx = params->wep_tx_keyidx; 3071 drv->auth_local_state_change = params->local_state_change; 3072 drv->auth_p2p = params->p2p; 3073 3074 if (params->bssid) 3075 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN); 3076 else 3077 os_memset(drv->auth_bssid_, 0, ETH_ALEN); 3078 3079 if (params->ssid) { 3080 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len); 3081 drv->auth_ssid_len = params->ssid_len; 3082 } else 3083 drv->auth_ssid_len = 0; 3084 3085 3086 os_free(drv->auth_ie); 3087 drv->auth_ie = NULL; 3088 drv->auth_ie_len = 0; 3089 if (params->ie) { 3090 drv->auth_ie = os_malloc(params->ie_len); 3091 if (drv->auth_ie) { 3092 os_memcpy(drv->auth_ie, params->ie, params->ie_len); 3093 drv->auth_ie_len = params->ie_len; 3094 } 3095 } 3096 3097 for (i = 0; i < 4; i++) { 3098 if (params->wep_key[i] && params->wep_key_len[i] && 3099 params->wep_key_len[i] <= 16) { 3100 os_memcpy(drv->auth_wep_key[i], params->wep_key[i], 3101 params->wep_key_len[i]); 3102 drv->auth_wep_key_len[i] = params->wep_key_len[i]; 3103 } else 3104 drv->auth_wep_key_len[i] = 0; 3105 } 3106 } 3107 3108 3109 static void nl80211_unmask_11b_rates(struct i802_bss *bss) 3110 { 3111 struct wpa_driver_nl80211_data *drv = bss->drv; 3112 3113 if (is_p2p_net_interface(drv->nlmode) || !drv->disabled_11b_rates) 3114 return; 3115 3116 /* 3117 * Looks like we failed to unmask 11b rates previously. This could 3118 * happen, e.g., if the interface was down at the point in time when a 3119 * P2P group was terminated. 3120 */ 3121 wpa_printf(MSG_DEBUG, 3122 "nl80211: Interface %s mode is for non-P2P, but 11b rates were disabled - re-enable them", 3123 bss->ifname); 3124 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 3125 } 3126 3127 3128 static int wpa_driver_nl80211_authenticate( 3129 struct i802_bss *bss, struct wpa_driver_auth_params *params) 3130 { 3131 struct wpa_driver_nl80211_data *drv = bss->drv; 3132 int ret = -1, i; 3133 struct nl_msg *msg; 3134 enum nl80211_auth_type type; 3135 enum nl80211_iftype nlmode; 3136 int count = 0; 3137 int is_retry; 3138 3139 nl80211_unmask_11b_rates(bss); 3140 3141 is_retry = drv->retry_auth; 3142 drv->retry_auth = 0; 3143 drv->ignore_deauth_event = 0; 3144 3145 nl80211_mark_disconnected(drv); 3146 os_memset(drv->auth_bssid, 0, ETH_ALEN); 3147 if (params->bssid) 3148 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN); 3149 else 3150 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN); 3151 /* FIX: IBSS mode */ 3152 nlmode = params->p2p ? 3153 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 3154 if (drv->nlmode != nlmode && 3155 wpa_driver_nl80211_set_mode(bss, nlmode) < 0) 3156 return -1; 3157 3158 retry: 3159 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)", 3160 drv->ifindex); 3161 3162 msg = nl80211_drv_msg(drv, 0, NL80211_CMD_AUTHENTICATE); 3163 if (!msg) 3164 goto fail; 3165 3166 for (i = 0; i < 4; i++) { 3167 if (!params->wep_key[i]) 3168 continue; 3169 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP, 3170 NULL, i, 3171 i == params->wep_tx_keyidx, NULL, 0, 3172 params->wep_key[i], 3173 params->wep_key_len[i]); 3174 if (params->wep_tx_keyidx != i) 3175 continue; 3176 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0, 3177 params->wep_key[i], params->wep_key_len[i])) 3178 goto fail; 3179 } 3180 3181 if (params->bssid) { 3182 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 3183 MAC2STR(params->bssid)); 3184 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid)) 3185 goto fail; 3186 } 3187 if (params->freq) { 3188 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 3189 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq)) 3190 goto fail; 3191 } 3192 if (params->ssid) { 3193 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 3194 params->ssid, params->ssid_len); 3195 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, 3196 params->ssid)) 3197 goto fail; 3198 } 3199 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len); 3200 if (params->ie && 3201 nla_put(msg, NL80211_ATTR_IE, params->ie_len, params->ie)) 3202 goto fail; 3203 if (params->auth_data) { 3204 wpa_hexdump(MSG_DEBUG, " * auth_data", params->auth_data, 3205 params->auth_data_len); 3206 if (nla_put(msg, NL80211_ATTR_SAE_DATA, params->auth_data_len, 3207 params->auth_data)) 3208 goto fail; 3209 } 3210 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 3211 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 3212 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 3213 type = NL80211_AUTHTYPE_SHARED_KEY; 3214 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 3215 type = NL80211_AUTHTYPE_NETWORK_EAP; 3216 else if (params->auth_alg & WPA_AUTH_ALG_FT) 3217 type = NL80211_AUTHTYPE_FT; 3218 else if (params->auth_alg & WPA_AUTH_ALG_SAE) 3219 type = NL80211_AUTHTYPE_SAE; 3220 else if (params->auth_alg & WPA_AUTH_ALG_FILS) 3221 type = NL80211_AUTHTYPE_FILS_SK; 3222 else 3223 goto fail; 3224 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 3225 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type)) 3226 goto fail; 3227 if (params->local_state_change) { 3228 wpa_printf(MSG_DEBUG, " * Local state change only"); 3229 if (nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE)) 3230 goto fail; 3231 } 3232 3233 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3234 msg = NULL; 3235 if (ret) { 3236 wpa_dbg(drv->ctx, MSG_DEBUG, 3237 "nl80211: MLME command failed (auth): ret=%d (%s)", 3238 ret, strerror(-ret)); 3239 count++; 3240 if (ret == -EALREADY && count == 1 && params->bssid && 3241 !params->local_state_change) { 3242 /* 3243 * mac80211 does not currently accept new 3244 * authentication if we are already authenticated. As a 3245 * workaround, force deauthentication and try again. 3246 */ 3247 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication " 3248 "after forced deauthentication"); 3249 drv->ignore_deauth_event = 1; 3250 wpa_driver_nl80211_deauthenticate( 3251 bss, params->bssid, 3252 WLAN_REASON_PREV_AUTH_NOT_VALID); 3253 nlmsg_free(msg); 3254 goto retry; 3255 } 3256 3257 if (ret == -ENOENT && params->freq && !is_retry) { 3258 /* 3259 * cfg80211 has likely expired the BSS entry even 3260 * though it was previously available in our internal 3261 * BSS table. To recover quickly, start a single 3262 * channel scan on the specified channel. 3263 */ 3264 struct wpa_driver_scan_params scan; 3265 int freqs[2]; 3266 3267 os_memset(&scan, 0, sizeof(scan)); 3268 scan.num_ssids = 1; 3269 if (params->ssid) { 3270 scan.ssids[0].ssid = params->ssid; 3271 scan.ssids[0].ssid_len = params->ssid_len; 3272 } 3273 freqs[0] = params->freq; 3274 freqs[1] = 0; 3275 scan.freqs = freqs; 3276 wpa_printf(MSG_DEBUG, "nl80211: Trigger single " 3277 "channel scan to refresh cfg80211 BSS " 3278 "entry"); 3279 ret = wpa_driver_nl80211_scan(bss, &scan); 3280 if (ret == 0) { 3281 nl80211_copy_auth_params(drv, params); 3282 drv->scan_for_auth = 1; 3283 } 3284 } else if (is_retry) { 3285 /* 3286 * Need to indicate this with an event since the return 3287 * value from the retry is not delivered to core code. 3288 */ 3289 union wpa_event_data event; 3290 wpa_printf(MSG_DEBUG, "nl80211: Authentication retry " 3291 "failed"); 3292 os_memset(&event, 0, sizeof(event)); 3293 os_memcpy(event.timeout_event.addr, drv->auth_bssid_, 3294 ETH_ALEN); 3295 wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT, 3296 &event); 3297 } 3298 } else { 3299 wpa_printf(MSG_DEBUG, 3300 "nl80211: Authentication request send successfully"); 3301 } 3302 3303 fail: 3304 nlmsg_free(msg); 3305 return ret; 3306 } 3307 3308 3309 int wpa_driver_nl80211_authenticate_retry(struct wpa_driver_nl80211_data *drv) 3310 { 3311 struct wpa_driver_auth_params params; 3312 struct i802_bss *bss = drv->first_bss; 3313 int i; 3314 3315 wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again"); 3316 3317 os_memset(¶ms, 0, sizeof(params)); 3318 params.freq = drv->auth_freq; 3319 params.auth_alg = drv->auth_alg; 3320 params.wep_tx_keyidx = drv->auth_wep_tx_keyidx; 3321 params.local_state_change = drv->auth_local_state_change; 3322 params.p2p = drv->auth_p2p; 3323 3324 if (!is_zero_ether_addr(drv->auth_bssid_)) 3325 params.bssid = drv->auth_bssid_; 3326 3327 if (drv->auth_ssid_len) { 3328 params.ssid = drv->auth_ssid; 3329 params.ssid_len = drv->auth_ssid_len; 3330 } 3331 3332 params.ie = drv->auth_ie; 3333 params.ie_len = drv->auth_ie_len; 3334 3335 for (i = 0; i < 4; i++) { 3336 if (drv->auth_wep_key_len[i]) { 3337 params.wep_key[i] = drv->auth_wep_key[i]; 3338 params.wep_key_len[i] = drv->auth_wep_key_len[i]; 3339 } 3340 } 3341 3342 drv->retry_auth = 1; 3343 return wpa_driver_nl80211_authenticate(bss, ¶ms); 3344 } 3345 3346 3347 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss, 3348 const void *data, size_t len, 3349 int encrypt, int noack, 3350 unsigned int freq, int no_cck, 3351 int offchanok, unsigned int wait_time, 3352 const u16 *csa_offs, 3353 size_t csa_offs_len) 3354 { 3355 struct wpa_driver_nl80211_data *drv = bss->drv; 3356 u64 cookie; 3357 int res; 3358 3359 if (freq == 0 && drv->nlmode == NL80211_IFTYPE_ADHOC) { 3360 freq = nl80211_get_assoc_freq(drv); 3361 wpa_printf(MSG_DEBUG, 3362 "nl80211: send_frame - Use assoc_freq=%u for IBSS", 3363 freq); 3364 } 3365 if (freq == 0) { 3366 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u", 3367 bss->freq); 3368 freq = bss->freq; 3369 } 3370 3371 if (drv->use_monitor) { 3372 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_monitor", 3373 freq, bss->freq); 3374 return nl80211_send_monitor(drv, data, len, encrypt, noack); 3375 } 3376 3377 wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd"); 3378 res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len, 3379 &cookie, no_cck, noack, offchanok, 3380 csa_offs, csa_offs_len); 3381 if (res == 0 && !noack) { 3382 const struct ieee80211_mgmt *mgmt; 3383 u16 fc; 3384 3385 mgmt = (const struct ieee80211_mgmt *) data; 3386 fc = le_to_host16(mgmt->frame_control); 3387 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 3388 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) { 3389 wpa_printf(MSG_MSGDUMP, 3390 "nl80211: Update send_action_cookie from 0x%llx to 0x%llx", 3391 (long long unsigned int) 3392 drv->send_action_cookie, 3393 (long long unsigned int) cookie); 3394 drv->send_action_cookie = cookie; 3395 } 3396 } 3397 3398 return res; 3399 } 3400 3401 3402 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data, 3403 size_t data_len, int noack, 3404 unsigned int freq, int no_cck, 3405 int offchanok, 3406 unsigned int wait_time, 3407 const u16 *csa_offs, 3408 size_t csa_offs_len) 3409 { 3410 struct wpa_driver_nl80211_data *drv = bss->drv; 3411 struct ieee80211_mgmt *mgmt; 3412 int encrypt = 1; 3413 u16 fc; 3414 3415 mgmt = (struct ieee80211_mgmt *) data; 3416 fc = le_to_host16(mgmt->frame_control); 3417 wpa_printf(MSG_DEBUG, "nl80211: send_mlme - da= " MACSTR 3418 " noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x (%s) nlmode=%d", 3419 MAC2STR(mgmt->da), noack, freq, no_cck, offchanok, wait_time, 3420 fc, fc2str(fc), drv->nlmode); 3421 3422 if ((is_sta_interface(drv->nlmode) || 3423 drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) && 3424 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 3425 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) { 3426 /* 3427 * The use of last_mgmt_freq is a bit of a hack, 3428 * but it works due to the single-threaded nature 3429 * of wpa_supplicant. 3430 */ 3431 if (freq == 0) { 3432 wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d", 3433 drv->last_mgmt_freq); 3434 freq = drv->last_mgmt_freq; 3435 } 3436 return nl80211_send_frame_cmd(bss, freq, 0, 3437 data, data_len, NULL, 1, noack, 3438 1, csa_offs, csa_offs_len); 3439 } 3440 3441 if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) { 3442 if (freq == 0) { 3443 wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d", 3444 bss->freq); 3445 freq = bss->freq; 3446 } 3447 return nl80211_send_frame_cmd(bss, freq, 3448 (int) freq == bss->freq ? 0 : 3449 wait_time, 3450 data, data_len, 3451 &drv->send_action_cookie, 3452 no_cck, noack, offchanok, 3453 csa_offs, csa_offs_len); 3454 } 3455 3456 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 3457 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) { 3458 /* 3459 * Only one of the authentication frame types is encrypted. 3460 * In order for static WEP encryption to work properly (i.e., 3461 * to not encrypt the frame), we need to tell mac80211 about 3462 * the frames that must not be encrypted. 3463 */ 3464 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg); 3465 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction); 3466 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3) 3467 encrypt = 0; 3468 } 3469 3470 wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame"); 3471 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 3472 noack, freq, no_cck, offchanok, 3473 wait_time, csa_offs, 3474 csa_offs_len); 3475 } 3476 3477 3478 static int nl80211_put_basic_rates(struct nl_msg *msg, const int *basic_rates) 3479 { 3480 u8 rates[NL80211_MAX_SUPP_RATES]; 3481 u8 rates_len = 0; 3482 int i; 3483 3484 if (!basic_rates) 3485 return 0; 3486 3487 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++) 3488 rates[rates_len++] = basic_rates[i] / 5; 3489 3490 return nla_put(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates); 3491 } 3492 3493 3494 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble, 3495 int slot, int ht_opmode, int ap_isolate, 3496 const int *basic_rates) 3497 { 3498 struct wpa_driver_nl80211_data *drv = bss->drv; 3499 struct nl_msg *msg; 3500 3501 if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_BSS)) || 3502 (cts >= 0 && 3503 nla_put_u8(msg, NL80211_ATTR_BSS_CTS_PROT, cts)) || 3504 (preamble >= 0 && 3505 nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble)) || 3506 (slot >= 0 && 3507 nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot)) || 3508 (ht_opmode >= 0 && 3509 nla_put_u16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode)) || 3510 (ap_isolate >= 0 && 3511 nla_put_u8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate)) || 3512 nl80211_put_basic_rates(msg, basic_rates)) { 3513 nlmsg_free(msg); 3514 return -ENOBUFS; 3515 } 3516 3517 return send_and_recv_msgs(drv, msg, NULL, NULL); 3518 } 3519 3520 3521 static int wpa_driver_nl80211_set_acl(void *priv, 3522 struct hostapd_acl_params *params) 3523 { 3524 struct i802_bss *bss = priv; 3525 struct wpa_driver_nl80211_data *drv = bss->drv; 3526 struct nl_msg *msg; 3527 struct nl_msg *acl; 3528 unsigned int i; 3529 int ret; 3530 3531 if (!(drv->capa.max_acl_mac_addrs)) 3532 return -ENOTSUP; 3533 3534 if (params->num_mac_acl > drv->capa.max_acl_mac_addrs) 3535 return -ENOTSUP; 3536 3537 wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)", 3538 params->acl_policy ? "Accept" : "Deny", params->num_mac_acl); 3539 3540 acl = nlmsg_alloc(); 3541 if (!acl) 3542 return -ENOMEM; 3543 for (i = 0; i < params->num_mac_acl; i++) { 3544 if (nla_put(acl, i + 1, ETH_ALEN, params->mac_acl[i].addr)) { 3545 nlmsg_free(acl); 3546 return -ENOMEM; 3547 } 3548 } 3549 3550 if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_MAC_ACL)) || 3551 nla_put_u32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ? 3552 NL80211_ACL_POLICY_DENY_UNLESS_LISTED : 3553 NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED) || 3554 nla_put_nested(msg, NL80211_ATTR_MAC_ADDRS, acl)) { 3555 nlmsg_free(msg); 3556 nlmsg_free(acl); 3557 return -ENOMEM; 3558 } 3559 nlmsg_free(acl); 3560 3561 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3562 if (ret) { 3563 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)", 3564 ret, strerror(-ret)); 3565 } 3566 3567 return ret; 3568 } 3569 3570 3571 static int nl80211_put_beacon_int(struct nl_msg *msg, int beacon_int) 3572 { 3573 if (beacon_int > 0) { 3574 wpa_printf(MSG_DEBUG, " * beacon_int=%d", beacon_int); 3575 return nla_put_u32(msg, NL80211_ATTR_BEACON_INTERVAL, 3576 beacon_int); 3577 } 3578 3579 return 0; 3580 } 3581 3582 3583 static int nl80211_put_dtim_period(struct nl_msg *msg, int dtim_period) 3584 { 3585 if (dtim_period > 0) { 3586 wpa_printf(MSG_DEBUG, " * dtim_period=%d", dtim_period); 3587 return nla_put_u32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period); 3588 } 3589 3590 return 0; 3591 } 3592 3593 3594 #ifdef CONFIG_MESH 3595 static int nl80211_set_mesh_config(void *priv, 3596 struct wpa_driver_mesh_bss_params *params) 3597 { 3598 struct i802_bss *bss = priv; 3599 struct wpa_driver_nl80211_data *drv = bss->drv; 3600 struct nl_msg *msg; 3601 int ret; 3602 3603 msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_MESH_CONFIG); 3604 if (!msg) 3605 return -1; 3606 3607 ret = nl80211_put_mesh_config(msg, params); 3608 if (ret < 0) { 3609 nlmsg_free(msg); 3610 return ret; 3611 } 3612 3613 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3614 if (ret) { 3615 wpa_printf(MSG_ERROR, 3616 "nl80211: Mesh config set failed: %d (%s)", 3617 ret, strerror(-ret)); 3618 return ret; 3619 } 3620 return 0; 3621 } 3622 #endif /* CONFIG_MESH */ 3623 3624 3625 static int nl80211_put_beacon_rate(struct nl_msg *msg, const u64 flags, 3626 struct wpa_driver_ap_params *params) 3627 { 3628 struct nlattr *bands, *band; 3629 struct nl80211_txrate_vht vht_rate; 3630 3631 if (!params->freq || 3632 (params->beacon_rate == 0 && 3633 params->rate_type == BEACON_RATE_LEGACY)) 3634 return 0; 3635 3636 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES); 3637 if (!bands) 3638 return -1; 3639 3640 switch (params->freq->mode) { 3641 case HOSTAPD_MODE_IEEE80211B: 3642 case HOSTAPD_MODE_IEEE80211G: 3643 band = nla_nest_start(msg, NL80211_BAND_2GHZ); 3644 break; 3645 case HOSTAPD_MODE_IEEE80211A: 3646 band = nla_nest_start(msg, NL80211_BAND_5GHZ); 3647 break; 3648 case HOSTAPD_MODE_IEEE80211AD: 3649 band = nla_nest_start(msg, NL80211_BAND_60GHZ); 3650 break; 3651 default: 3652 return 0; 3653 } 3654 3655 if (!band) 3656 return -1; 3657 3658 os_memset(&vht_rate, 0, sizeof(vht_rate)); 3659 3660 switch (params->rate_type) { 3661 case BEACON_RATE_LEGACY: 3662 if (!(flags & WPA_DRIVER_FLAGS_BEACON_RATE_LEGACY)) { 3663 wpa_printf(MSG_INFO, 3664 "nl80211: Driver does not support setting Beacon frame rate (legacy)"); 3665 return -1; 3666 } 3667 3668 if (nla_put_u8(msg, NL80211_TXRATE_LEGACY, 3669 (u8) params->beacon_rate / 5) || 3670 nla_put(msg, NL80211_TXRATE_HT, 0, NULL) || 3671 (params->freq->vht_enabled && 3672 nla_put(msg, NL80211_TXRATE_VHT, sizeof(vht_rate), 3673 &vht_rate))) 3674 return -1; 3675 3676 wpa_printf(MSG_DEBUG, " * beacon_rate = legacy:%u (* 100 kbps)", 3677 params->beacon_rate); 3678 break; 3679 case BEACON_RATE_HT: 3680 if (!(flags & WPA_DRIVER_FLAGS_BEACON_RATE_HT)) { 3681 wpa_printf(MSG_INFO, 3682 "nl80211: Driver does not support setting Beacon frame rate (HT)"); 3683 return -1; 3684 } 3685 if (nla_put(msg, NL80211_TXRATE_LEGACY, 0, NULL) || 3686 nla_put_u8(msg, NL80211_TXRATE_HT, params->beacon_rate) || 3687 (params->freq->vht_enabled && 3688 nla_put(msg, NL80211_TXRATE_VHT, sizeof(vht_rate), 3689 &vht_rate))) 3690 return -1; 3691 wpa_printf(MSG_DEBUG, " * beacon_rate = HT-MCS %u", 3692 params->beacon_rate); 3693 break; 3694 case BEACON_RATE_VHT: 3695 if (!(flags & WPA_DRIVER_FLAGS_BEACON_RATE_VHT)) { 3696 wpa_printf(MSG_INFO, 3697 "nl80211: Driver does not support setting Beacon frame rate (VHT)"); 3698 return -1; 3699 } 3700 vht_rate.mcs[0] = BIT(params->beacon_rate); 3701 if (nla_put(msg, NL80211_TXRATE_LEGACY, 0, NULL)) 3702 return -1; 3703 if (nla_put(msg, NL80211_TXRATE_HT, 0, NULL)) 3704 return -1; 3705 if (nla_put(msg, NL80211_TXRATE_VHT, sizeof(vht_rate), 3706 &vht_rate)) 3707 return -1; 3708 wpa_printf(MSG_DEBUG, " * beacon_rate = VHT-MCS %u", 3709 params->beacon_rate); 3710 break; 3711 } 3712 3713 nla_nest_end(msg, band); 3714 nla_nest_end(msg, bands); 3715 3716 return 0; 3717 } 3718 3719 3720 static int nl80211_set_multicast_to_unicast(struct i802_bss *bss, 3721 int multicast_to_unicast) 3722 { 3723 struct wpa_driver_nl80211_data *drv = bss->drv; 3724 struct nl_msg *msg; 3725 int ret; 3726 3727 msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_MULTICAST_TO_UNICAST); 3728 if (!msg || 3729 (multicast_to_unicast && 3730 nla_put_flag(msg, NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED))) { 3731 wpa_printf(MSG_ERROR, 3732 "nl80211: Failed to build NL80211_CMD_SET_MULTICAST_TO_UNICAST msg for %s", 3733 bss->ifname); 3734 nlmsg_free(msg); 3735 return -ENOBUFS; 3736 } 3737 3738 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3739 3740 switch (ret) { 3741 case 0: 3742 wpa_printf(MSG_DEBUG, 3743 "nl80211: multicast to unicast %s on interface %s", 3744 multicast_to_unicast ? "enabled" : "disabled", 3745 bss->ifname); 3746 break; 3747 case -EOPNOTSUPP: 3748 if (!multicast_to_unicast) 3749 break; 3750 wpa_printf(MSG_INFO, 3751 "nl80211: multicast to unicast not supported on interface %s", 3752 bss->ifname); 3753 break; 3754 default: 3755 wpa_printf(MSG_ERROR, 3756 "nl80211: %s multicast to unicast failed with %d (%s) on interface %s", 3757 multicast_to_unicast ? "enabling" : "disabling", 3758 ret, strerror(-ret), bss->ifname); 3759 break; 3760 } 3761 3762 return ret; 3763 } 3764 3765 3766 static int wpa_driver_nl80211_set_ap(void *priv, 3767 struct wpa_driver_ap_params *params) 3768 { 3769 struct i802_bss *bss = priv; 3770 struct wpa_driver_nl80211_data *drv = bss->drv; 3771 struct nl_msg *msg; 3772 u8 cmd = NL80211_CMD_NEW_BEACON; 3773 int ret; 3774 int beacon_set; 3775 int num_suites; 3776 int smps_mode; 3777 u32 suites[10], suite; 3778 u32 ver; 3779 #ifdef CONFIG_MESH 3780 struct wpa_driver_mesh_bss_params mesh_params; 3781 #endif /* CONFIG_MESH */ 3782 3783 beacon_set = params->reenable ? 0 : bss->beacon_set; 3784 3785 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)", 3786 beacon_set); 3787 if (beacon_set) 3788 cmd = NL80211_CMD_SET_BEACON; 3789 else if (!drv->device_ap_sme && !drv->use_monitor && 3790 !nl80211_get_wiphy_data_ap(bss)) 3791 return -ENOBUFS; 3792 3793 wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head", 3794 params->head, params->head_len); 3795 wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail", 3796 params->tail, params->tail_len); 3797 wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", bss->ifindex); 3798 wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int); 3799 wpa_printf(MSG_DEBUG, "nl80211: beacon_rate=%u", params->beacon_rate); 3800 wpa_printf(MSG_DEBUG, "nl80211: rate_type=%d", params->rate_type); 3801 wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period); 3802 wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid", 3803 params->ssid, params->ssid_len); 3804 if (!(msg = nl80211_bss_msg(bss, 0, cmd)) || 3805 nla_put(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, 3806 params->head) || 3807 nla_put(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, 3808 params->tail) || 3809 nl80211_put_beacon_int(msg, params->beacon_int) || 3810 nl80211_put_beacon_rate(msg, drv->capa.flags, params) || 3811 nl80211_put_dtim_period(msg, params->dtim_period) || 3812 nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid)) 3813 goto fail; 3814 if (params->proberesp && params->proberesp_len) { 3815 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)", 3816 params->proberesp, params->proberesp_len); 3817 if (nla_put(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len, 3818 params->proberesp)) 3819 goto fail; 3820 } 3821 switch (params->hide_ssid) { 3822 case NO_SSID_HIDING: 3823 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use"); 3824 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID, 3825 NL80211_HIDDEN_SSID_NOT_IN_USE)) 3826 goto fail; 3827 break; 3828 case HIDDEN_SSID_ZERO_LEN: 3829 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len"); 3830 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID, 3831 NL80211_HIDDEN_SSID_ZERO_LEN)) 3832 goto fail; 3833 break; 3834 case HIDDEN_SSID_ZERO_CONTENTS: 3835 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents"); 3836 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID, 3837 NL80211_HIDDEN_SSID_ZERO_CONTENTS)) 3838 goto fail; 3839 break; 3840 } 3841 wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy); 3842 if (params->privacy && 3843 nla_put_flag(msg, NL80211_ATTR_PRIVACY)) 3844 goto fail; 3845 wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs); 3846 if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) == 3847 (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) { 3848 /* Leave out the attribute */ 3849 } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) { 3850 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, 3851 NL80211_AUTHTYPE_SHARED_KEY)) 3852 goto fail; 3853 } else { 3854 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, 3855 NL80211_AUTHTYPE_OPEN_SYSTEM)) 3856 goto fail; 3857 } 3858 3859 wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version); 3860 ver = 0; 3861 if (params->wpa_version & WPA_PROTO_WPA) 3862 ver |= NL80211_WPA_VERSION_1; 3863 if (params->wpa_version & WPA_PROTO_RSN) 3864 ver |= NL80211_WPA_VERSION_2; 3865 if (ver && 3866 nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver)) 3867 goto fail; 3868 3869 wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x", 3870 params->key_mgmt_suites); 3871 num_suites = 0; 3872 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X) 3873 suites[num_suites++] = RSN_AUTH_KEY_MGMT_UNSPEC_802_1X; 3874 if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK) 3875 suites[num_suites++] = RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X; 3876 if (num_suites && 3877 nla_put(msg, NL80211_ATTR_AKM_SUITES, num_suites * sizeof(u32), 3878 suites)) 3879 goto fail; 3880 3881 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X_NO_WPA && 3882 (!params->pairwise_ciphers || 3883 params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40)) && 3884 (nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, ETH_P_PAE) || 3885 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT))) 3886 goto fail; 3887 3888 wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x", 3889 params->pairwise_ciphers); 3890 num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers, 3891 suites, ARRAY_SIZE(suites)); 3892 if (num_suites && 3893 nla_put(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, 3894 num_suites * sizeof(u32), suites)) 3895 goto fail; 3896 3897 wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x", 3898 params->group_cipher); 3899 suite = wpa_cipher_to_cipher_suite(params->group_cipher); 3900 if (suite && 3901 nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite)) 3902 goto fail; 3903 3904 if (params->ht_opmode != -1) { 3905 switch (params->smps_mode) { 3906 case HT_CAP_INFO_SMPS_DYNAMIC: 3907 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - dynamic"); 3908 smps_mode = NL80211_SMPS_DYNAMIC; 3909 break; 3910 case HT_CAP_INFO_SMPS_STATIC: 3911 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - static"); 3912 smps_mode = NL80211_SMPS_STATIC; 3913 break; 3914 default: 3915 /* invalid - fallback to smps off */ 3916 case HT_CAP_INFO_SMPS_DISABLED: 3917 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - off"); 3918 smps_mode = NL80211_SMPS_OFF; 3919 break; 3920 } 3921 if (nla_put_u32(msg, NL80211_ATTR_SMPS_MODE, smps_mode)) 3922 goto fail; 3923 } 3924 3925 if (params->beacon_ies) { 3926 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies", 3927 params->beacon_ies); 3928 if (nla_put(msg, NL80211_ATTR_IE, 3929 wpabuf_len(params->beacon_ies), 3930 wpabuf_head(params->beacon_ies))) 3931 goto fail; 3932 } 3933 if (params->proberesp_ies) { 3934 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies", 3935 params->proberesp_ies); 3936 if (nla_put(msg, NL80211_ATTR_IE_PROBE_RESP, 3937 wpabuf_len(params->proberesp_ies), 3938 wpabuf_head(params->proberesp_ies))) 3939 goto fail; 3940 } 3941 if (params->assocresp_ies) { 3942 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies", 3943 params->assocresp_ies); 3944 if (nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP, 3945 wpabuf_len(params->assocresp_ies), 3946 wpabuf_head(params->assocresp_ies))) 3947 goto fail; 3948 } 3949 3950 if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER) { 3951 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d", 3952 params->ap_max_inactivity); 3953 if (nla_put_u16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT, 3954 params->ap_max_inactivity)) 3955 goto fail; 3956 } 3957 3958 #ifdef CONFIG_P2P 3959 if (params->p2p_go_ctwindow > 0) { 3960 if (drv->p2p_go_ctwindow_supported) { 3961 wpa_printf(MSG_DEBUG, "nl80211: P2P GO ctwindow=%d", 3962 params->p2p_go_ctwindow); 3963 if (nla_put_u8(msg, NL80211_ATTR_P2P_CTWINDOW, 3964 params->p2p_go_ctwindow)) 3965 goto fail; 3966 } else { 3967 wpa_printf(MSG_INFO, 3968 "nl80211: Driver does not support CTWindow configuration - ignore this parameter"); 3969 } 3970 } 3971 #endif /* CONFIG_P2P */ 3972 3973 if (params->pbss) { 3974 wpa_printf(MSG_DEBUG, "nl80211: PBSS"); 3975 if (nla_put_flag(msg, NL80211_ATTR_PBSS)) 3976 goto fail; 3977 } 3978 3979 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3980 if (ret) { 3981 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)", 3982 ret, strerror(-ret)); 3983 } else { 3984 bss->beacon_set = 1; 3985 nl80211_set_bss(bss, params->cts_protect, params->preamble, 3986 params->short_slot_time, params->ht_opmode, 3987 params->isolate, params->basic_rates); 3988 nl80211_set_multicast_to_unicast(bss, 3989 params->multicast_to_unicast); 3990 if (beacon_set && params->freq && 3991 params->freq->bandwidth != bss->bandwidth) { 3992 wpa_printf(MSG_DEBUG, 3993 "nl80211: Update BSS %s bandwidth: %d -> %d", 3994 bss->ifname, bss->bandwidth, 3995 params->freq->bandwidth); 3996 ret = nl80211_set_channel(bss, params->freq, 1); 3997 if (ret) { 3998 wpa_printf(MSG_DEBUG, 3999 "nl80211: Frequency set failed: %d (%s)", 4000 ret, strerror(-ret)); 4001 } else { 4002 wpa_printf(MSG_DEBUG, 4003 "nl80211: Frequency set succeeded for ht2040 coex"); 4004 bss->bandwidth = params->freq->bandwidth; 4005 } 4006 } else if (!beacon_set && params->freq) { 4007 /* 4008 * cfg80211 updates the driver on frequence change in AP 4009 * mode only at the point when beaconing is started, so 4010 * set the initial value here. 4011 */ 4012 bss->bandwidth = params->freq->bandwidth; 4013 } 4014 } 4015 4016 #ifdef CONFIG_MESH 4017 if (is_mesh_interface(drv->nlmode) && params->ht_opmode != -1) { 4018 os_memset(&mesh_params, 0, sizeof(mesh_params)); 4019 mesh_params.flags |= WPA_DRIVER_MESH_CONF_FLAG_HT_OP_MODE; 4020 mesh_params.ht_opmode = params->ht_opmode; 4021 ret = nl80211_set_mesh_config(priv, &mesh_params); 4022 if (ret < 0) 4023 return ret; 4024 } 4025 #endif /* CONFIG_MESH */ 4026 4027 return ret; 4028 fail: 4029 nlmsg_free(msg); 4030 return -ENOBUFS; 4031 } 4032 4033 4034 static int nl80211_put_freq_params(struct nl_msg *msg, 4035 const struct hostapd_freq_params *freq) 4036 { 4037 wpa_printf(MSG_DEBUG, " * freq=%d", freq->freq); 4038 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq)) 4039 return -ENOBUFS; 4040 4041 wpa_printf(MSG_DEBUG, " * vht_enabled=%d", freq->vht_enabled); 4042 wpa_printf(MSG_DEBUG, " * ht_enabled=%d", freq->ht_enabled); 4043 4044 if (freq->vht_enabled) { 4045 enum nl80211_chan_width cw; 4046 4047 wpa_printf(MSG_DEBUG, " * bandwidth=%d", freq->bandwidth); 4048 switch (freq->bandwidth) { 4049 case 20: 4050 cw = NL80211_CHAN_WIDTH_20; 4051 break; 4052 case 40: 4053 cw = NL80211_CHAN_WIDTH_40; 4054 break; 4055 case 80: 4056 if (freq->center_freq2) 4057 cw = NL80211_CHAN_WIDTH_80P80; 4058 else 4059 cw = NL80211_CHAN_WIDTH_80; 4060 break; 4061 case 160: 4062 cw = NL80211_CHAN_WIDTH_160; 4063 break; 4064 default: 4065 return -EINVAL; 4066 } 4067 4068 wpa_printf(MSG_DEBUG, " * channel_width=%d", cw); 4069 wpa_printf(MSG_DEBUG, " * center_freq1=%d", 4070 freq->center_freq1); 4071 wpa_printf(MSG_DEBUG, " * center_freq2=%d", 4072 freq->center_freq2); 4073 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, cw) || 4074 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, 4075 freq->center_freq1) || 4076 (freq->center_freq2 && 4077 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, 4078 freq->center_freq2))) 4079 return -ENOBUFS; 4080 } else if (freq->ht_enabled) { 4081 enum nl80211_channel_type ct; 4082 4083 wpa_printf(MSG_DEBUG, " * sec_channel_offset=%d", 4084 freq->sec_channel_offset); 4085 switch (freq->sec_channel_offset) { 4086 case -1: 4087 ct = NL80211_CHAN_HT40MINUS; 4088 break; 4089 case 1: 4090 ct = NL80211_CHAN_HT40PLUS; 4091 break; 4092 default: 4093 ct = NL80211_CHAN_HT20; 4094 break; 4095 } 4096 4097 wpa_printf(MSG_DEBUG, " * channel_type=%d", ct); 4098 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ct)) 4099 return -ENOBUFS; 4100 } else { 4101 wpa_printf(MSG_DEBUG, " * channel_type=%d", 4102 NL80211_CHAN_NO_HT); 4103 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 4104 NL80211_CHAN_NO_HT)) 4105 return -ENOBUFS; 4106 } 4107 return 0; 4108 } 4109 4110 4111 static int nl80211_set_channel(struct i802_bss *bss, 4112 struct hostapd_freq_params *freq, int set_chan) 4113 { 4114 struct wpa_driver_nl80211_data *drv = bss->drv; 4115 struct nl_msg *msg; 4116 int ret; 4117 4118 wpa_printf(MSG_DEBUG, 4119 "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)", 4120 freq->freq, freq->ht_enabled, freq->vht_enabled, 4121 freq->bandwidth, freq->center_freq1, freq->center_freq2); 4122 4123 msg = nl80211_drv_msg(drv, 0, set_chan ? NL80211_CMD_SET_CHANNEL : 4124 NL80211_CMD_SET_WIPHY); 4125 if (!msg || nl80211_put_freq_params(msg, freq) < 0) { 4126 nlmsg_free(msg); 4127 return -1; 4128 } 4129 4130 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4131 if (ret == 0) { 4132 bss->freq = freq->freq; 4133 return 0; 4134 } 4135 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): " 4136 "%d (%s)", freq->freq, ret, strerror(-ret)); 4137 return -1; 4138 } 4139 4140 4141 static u32 sta_flags_nl80211(int flags) 4142 { 4143 u32 f = 0; 4144 4145 if (flags & WPA_STA_AUTHORIZED) 4146 f |= BIT(NL80211_STA_FLAG_AUTHORIZED); 4147 if (flags & WPA_STA_WMM) 4148 f |= BIT(NL80211_STA_FLAG_WME); 4149 if (flags & WPA_STA_SHORT_PREAMBLE) 4150 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 4151 if (flags & WPA_STA_MFP) 4152 f |= BIT(NL80211_STA_FLAG_MFP); 4153 if (flags & WPA_STA_TDLS_PEER) 4154 f |= BIT(NL80211_STA_FLAG_TDLS_PEER); 4155 if (flags & WPA_STA_AUTHENTICATED) 4156 f |= BIT(NL80211_STA_FLAG_AUTHENTICATED); 4157 if (flags & WPA_STA_ASSOCIATED) 4158 f |= BIT(NL80211_STA_FLAG_ASSOCIATED); 4159 4160 return f; 4161 } 4162 4163 4164 #ifdef CONFIG_MESH 4165 static u32 sta_plink_state_nl80211(enum mesh_plink_state state) 4166 { 4167 switch (state) { 4168 case PLINK_IDLE: 4169 return NL80211_PLINK_LISTEN; 4170 case PLINK_OPN_SNT: 4171 return NL80211_PLINK_OPN_SNT; 4172 case PLINK_OPN_RCVD: 4173 return NL80211_PLINK_OPN_RCVD; 4174 case PLINK_CNF_RCVD: 4175 return NL80211_PLINK_CNF_RCVD; 4176 case PLINK_ESTAB: 4177 return NL80211_PLINK_ESTAB; 4178 case PLINK_HOLDING: 4179 return NL80211_PLINK_HOLDING; 4180 case PLINK_BLOCKED: 4181 return NL80211_PLINK_BLOCKED; 4182 default: 4183 wpa_printf(MSG_ERROR, "nl80211: Invalid mesh plink state %d", 4184 state); 4185 } 4186 return -1; 4187 } 4188 #endif /* CONFIG_MESH */ 4189 4190 4191 static int wpa_driver_nl80211_sta_add(void *priv, 4192 struct hostapd_sta_add_params *params) 4193 { 4194 struct i802_bss *bss = priv; 4195 struct wpa_driver_nl80211_data *drv = bss->drv; 4196 struct nl_msg *msg; 4197 struct nl80211_sta_flag_update upd; 4198 int ret = -ENOBUFS; 4199 4200 if ((params->flags & WPA_STA_TDLS_PEER) && 4201 !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 4202 return -EOPNOTSUPP; 4203 4204 wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR, 4205 params->set ? "Set" : "Add", MAC2STR(params->addr)); 4206 msg = nl80211_bss_msg(bss, 0, params->set ? NL80211_CMD_SET_STATION : 4207 NL80211_CMD_NEW_STATION); 4208 if (!msg || nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr)) 4209 goto fail; 4210 4211 /* 4212 * Set the below properties only in one of the following cases: 4213 * 1. New station is added, already associated. 4214 * 2. Set WPA_STA_TDLS_PEER station. 4215 * 3. Set an already added unassociated station, if driver supports 4216 * full AP client state. (Set these properties after station became 4217 * associated will be rejected by the driver). 4218 */ 4219 if (!params->set || (params->flags & WPA_STA_TDLS_PEER) || 4220 (params->set && FULL_AP_CLIENT_STATE_SUPP(drv->capa.flags) && 4221 (params->flags & WPA_STA_ASSOCIATED))) { 4222 wpa_hexdump(MSG_DEBUG, " * supported rates", 4223 params->supp_rates, params->supp_rates_len); 4224 wpa_printf(MSG_DEBUG, " * capability=0x%x", 4225 params->capability); 4226 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_RATES, 4227 params->supp_rates_len, params->supp_rates) || 4228 nla_put_u16(msg, NL80211_ATTR_STA_CAPABILITY, 4229 params->capability)) 4230 goto fail; 4231 4232 if (params->ht_capabilities) { 4233 wpa_hexdump(MSG_DEBUG, " * ht_capabilities", 4234 (u8 *) params->ht_capabilities, 4235 sizeof(*params->ht_capabilities)); 4236 if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY, 4237 sizeof(*params->ht_capabilities), 4238 params->ht_capabilities)) 4239 goto fail; 4240 } 4241 4242 if (params->vht_capabilities) { 4243 wpa_hexdump(MSG_DEBUG, " * vht_capabilities", 4244 (u8 *) params->vht_capabilities, 4245 sizeof(*params->vht_capabilities)); 4246 if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY, 4247 sizeof(*params->vht_capabilities), 4248 params->vht_capabilities)) 4249 goto fail; 4250 } 4251 4252 if (params->ext_capab) { 4253 wpa_hexdump(MSG_DEBUG, " * ext_capab", 4254 params->ext_capab, params->ext_capab_len); 4255 if (nla_put(msg, NL80211_ATTR_STA_EXT_CAPABILITY, 4256 params->ext_capab_len, params->ext_capab)) 4257 goto fail; 4258 } 4259 4260 if (is_ap_interface(drv->nlmode) && 4261 nla_put_u8(msg, NL80211_ATTR_STA_SUPPORT_P2P_PS, 4262 params->support_p2p_ps ? 4263 NL80211_P2P_PS_SUPPORTED : 4264 NL80211_P2P_PS_UNSUPPORTED)) 4265 goto fail; 4266 } 4267 if (!params->set) { 4268 if (params->aid) { 4269 wpa_printf(MSG_DEBUG, " * aid=%u", params->aid); 4270 if (nla_put_u16(msg, NL80211_ATTR_STA_AID, params->aid)) 4271 goto fail; 4272 } else { 4273 /* 4274 * cfg80211 validates that AID is non-zero, so we have 4275 * to make this a non-zero value for the TDLS case where 4276 * a dummy STA entry is used for now and for a station 4277 * that is still not associated. 4278 */ 4279 wpa_printf(MSG_DEBUG, " * aid=1 (%s workaround)", 4280 (params->flags & WPA_STA_TDLS_PEER) ? 4281 "TDLS" : "UNASSOC_STA"); 4282 if (nla_put_u16(msg, NL80211_ATTR_STA_AID, 1)) 4283 goto fail; 4284 } 4285 wpa_printf(MSG_DEBUG, " * listen_interval=%u", 4286 params->listen_interval); 4287 if (nla_put_u16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL, 4288 params->listen_interval)) 4289 goto fail; 4290 } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) { 4291 wpa_printf(MSG_DEBUG, " * peer_aid=%u", params->aid); 4292 if (nla_put_u16(msg, NL80211_ATTR_PEER_AID, params->aid)) 4293 goto fail; 4294 } else if (FULL_AP_CLIENT_STATE_SUPP(drv->capa.flags) && 4295 (params->flags & WPA_STA_ASSOCIATED)) { 4296 wpa_printf(MSG_DEBUG, " * aid=%u", params->aid); 4297 wpa_printf(MSG_DEBUG, " * listen_interval=%u", 4298 params->listen_interval); 4299 if (nla_put_u16(msg, NL80211_ATTR_STA_AID, params->aid) || 4300 nla_put_u16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL, 4301 params->listen_interval)) 4302 goto fail; 4303 } 4304 4305 if (params->vht_opmode_enabled) { 4306 wpa_printf(MSG_DEBUG, " * opmode=%u", params->vht_opmode); 4307 if (nla_put_u8(msg, NL80211_ATTR_OPMODE_NOTIF, 4308 params->vht_opmode)) 4309 goto fail; 4310 } 4311 4312 if (params->supp_channels) { 4313 wpa_hexdump(MSG_DEBUG, " * supported channels", 4314 params->supp_channels, params->supp_channels_len); 4315 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS, 4316 params->supp_channels_len, params->supp_channels)) 4317 goto fail; 4318 } 4319 4320 if (params->supp_oper_classes) { 4321 wpa_hexdump(MSG_DEBUG, " * supported operating classes", 4322 params->supp_oper_classes, 4323 params->supp_oper_classes_len); 4324 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES, 4325 params->supp_oper_classes_len, 4326 params->supp_oper_classes)) 4327 goto fail; 4328 } 4329 4330 os_memset(&upd, 0, sizeof(upd)); 4331 upd.set = sta_flags_nl80211(params->flags); 4332 upd.mask = upd.set | sta_flags_nl80211(params->flags_mask); 4333 4334 /* 4335 * If the driver doesn't support full AP client state, ignore ASSOC/AUTH 4336 * flags, as nl80211 driver moves a new station, by default, into 4337 * associated state. 4338 * 4339 * On the other hand, if the driver supports that feature and the 4340 * station is added in unauthenticated state, set the 4341 * authenticated/associated bits in the mask to prevent moving this 4342 * station to associated state before it is actually associated. 4343 * 4344 * This is irrelevant for mesh mode where the station is added to the 4345 * driver as authenticated already, and ASSOCIATED isn't part of the 4346 * nl80211 API. 4347 */ 4348 if (!is_mesh_interface(drv->nlmode)) { 4349 if (!FULL_AP_CLIENT_STATE_SUPP(drv->capa.flags)) { 4350 wpa_printf(MSG_DEBUG, 4351 "nl80211: Ignore ASSOC/AUTH flags since driver doesn't support full AP client state"); 4352 upd.mask &= ~(BIT(NL80211_STA_FLAG_ASSOCIATED) | 4353 BIT(NL80211_STA_FLAG_AUTHENTICATED)); 4354 } else if (!params->set && 4355 !(params->flags & WPA_STA_TDLS_PEER)) { 4356 if (!(params->flags & WPA_STA_AUTHENTICATED)) 4357 upd.mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED); 4358 if (!(params->flags & WPA_STA_ASSOCIATED)) 4359 upd.mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 4360 } 4361 #ifdef CONFIG_MESH 4362 } else { 4363 if (params->plink_state == PLINK_ESTAB && params->peer_aid) { 4364 ret = nla_put_u16(msg, NL80211_ATTR_MESH_PEER_AID, 4365 params->peer_aid); 4366 if (ret) 4367 goto fail; 4368 } 4369 #endif /* CONFIG_MESH */ 4370 } 4371 4372 wpa_printf(MSG_DEBUG, " * flags set=0x%x mask=0x%x", 4373 upd.set, upd.mask); 4374 if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd)) 4375 goto fail; 4376 4377 #ifdef CONFIG_MESH 4378 if (params->plink_state && 4379 nla_put_u8(msg, NL80211_ATTR_STA_PLINK_STATE, 4380 sta_plink_state_nl80211(params->plink_state))) 4381 goto fail; 4382 #endif /* CONFIG_MESH */ 4383 4384 if (params->flags & WPA_STA_WMM) { 4385 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME); 4386 4387 wpa_printf(MSG_DEBUG, " * qosinfo=0x%x", params->qosinfo); 4388 if (!wme || 4389 nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES, 4390 params->qosinfo & WMM_QOSINFO_STA_AC_MASK) || 4391 nla_put_u8(msg, NL80211_STA_WME_MAX_SP, 4392 (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) & 4393 WMM_QOSINFO_STA_SP_MASK)) 4394 goto fail; 4395 nla_nest_end(msg, wme); 4396 } 4397 4398 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4399 msg = NULL; 4400 if (ret) 4401 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION " 4402 "result: %d (%s)", params->set ? "SET" : "NEW", ret, 4403 strerror(-ret)); 4404 if (ret == -EEXIST) 4405 ret = 0; 4406 fail: 4407 nlmsg_free(msg); 4408 return ret; 4409 } 4410 4411 4412 static void rtnl_neigh_delete_fdb_entry(struct i802_bss *bss, const u8 *addr) 4413 { 4414 #ifdef CONFIG_LIBNL3_ROUTE 4415 struct wpa_driver_nl80211_data *drv = bss->drv; 4416 struct rtnl_neigh *rn; 4417 struct nl_addr *nl_addr; 4418 int err; 4419 4420 rn = rtnl_neigh_alloc(); 4421 if (!rn) 4422 return; 4423 4424 rtnl_neigh_set_family(rn, AF_BRIDGE); 4425 rtnl_neigh_set_ifindex(rn, bss->ifindex); 4426 nl_addr = nl_addr_build(AF_BRIDGE, (void *) addr, ETH_ALEN); 4427 if (!nl_addr) { 4428 rtnl_neigh_put(rn); 4429 return; 4430 } 4431 rtnl_neigh_set_lladdr(rn, nl_addr); 4432 4433 err = rtnl_neigh_delete(drv->rtnl_sk, rn, 0); 4434 if (err < 0) { 4435 wpa_printf(MSG_DEBUG, "nl80211: bridge FDB entry delete for " 4436 MACSTR " ifindex=%d failed: %s", MAC2STR(addr), 4437 bss->ifindex, nl_geterror(err)); 4438 } else { 4439 wpa_printf(MSG_DEBUG, "nl80211: deleted bridge FDB entry for " 4440 MACSTR, MAC2STR(addr)); 4441 } 4442 4443 nl_addr_put(nl_addr); 4444 rtnl_neigh_put(rn); 4445 #endif /* CONFIG_LIBNL3_ROUTE */ 4446 } 4447 4448 4449 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr, 4450 int deauth, u16 reason_code) 4451 { 4452 struct wpa_driver_nl80211_data *drv = bss->drv; 4453 struct nl_msg *msg; 4454 int ret; 4455 4456 if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION)) || 4457 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 4458 (deauth == 0 && 4459 nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE, 4460 WLAN_FC_STYPE_DISASSOC)) || 4461 (deauth == 1 && 4462 nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE, 4463 WLAN_FC_STYPE_DEAUTH)) || 4464 (reason_code && 4465 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) { 4466 nlmsg_free(msg); 4467 return -ENOBUFS; 4468 } 4469 4470 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4471 wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR 4472 " --> %d (%s)", 4473 bss->ifname, MAC2STR(addr), ret, strerror(-ret)); 4474 4475 if (drv->rtnl_sk) 4476 rtnl_neigh_delete_fdb_entry(bss, addr); 4477 4478 if (ret == -ENOENT) 4479 return 0; 4480 return ret; 4481 } 4482 4483 4484 void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx) 4485 { 4486 struct nl_msg *msg; 4487 struct wpa_driver_nl80211_data *drv2; 4488 4489 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx); 4490 4491 /* stop listening for EAPOL on this interface */ 4492 dl_list_for_each(drv2, &drv->global->interfaces, 4493 struct wpa_driver_nl80211_data, list) 4494 { 4495 del_ifidx(drv2, ifidx, IFIDX_ANY); 4496 /* Remove all bridges learned for this iface */ 4497 del_ifidx(drv2, IFIDX_ANY, ifidx); 4498 } 4499 4500 msg = nl80211_ifindex_msg(drv, ifidx, 0, NL80211_CMD_DEL_INTERFACE); 4501 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 4502 return; 4503 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx); 4504 } 4505 4506 4507 const char * nl80211_iftype_str(enum nl80211_iftype mode) 4508 { 4509 switch (mode) { 4510 case NL80211_IFTYPE_ADHOC: 4511 return "ADHOC"; 4512 case NL80211_IFTYPE_STATION: 4513 return "STATION"; 4514 case NL80211_IFTYPE_AP: 4515 return "AP"; 4516 case NL80211_IFTYPE_AP_VLAN: 4517 return "AP_VLAN"; 4518 case NL80211_IFTYPE_WDS: 4519 return "WDS"; 4520 case NL80211_IFTYPE_MONITOR: 4521 return "MONITOR"; 4522 case NL80211_IFTYPE_MESH_POINT: 4523 return "MESH_POINT"; 4524 case NL80211_IFTYPE_P2P_CLIENT: 4525 return "P2P_CLIENT"; 4526 case NL80211_IFTYPE_P2P_GO: 4527 return "P2P_GO"; 4528 case NL80211_IFTYPE_P2P_DEVICE: 4529 return "P2P_DEVICE"; 4530 default: 4531 return "unknown"; 4532 } 4533 } 4534 4535 4536 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv, 4537 const char *ifname, 4538 enum nl80211_iftype iftype, 4539 const u8 *addr, int wds, 4540 int (*handler)(struct nl_msg *, void *), 4541 void *arg) 4542 { 4543 struct nl_msg *msg; 4544 int ifidx; 4545 int ret = -ENOBUFS; 4546 4547 wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)", 4548 iftype, nl80211_iftype_str(iftype)); 4549 4550 msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_NEW_INTERFACE); 4551 if (!msg || 4552 nla_put_string(msg, NL80211_ATTR_IFNAME, ifname) || 4553 nla_put_u32(msg, NL80211_ATTR_IFTYPE, iftype)) 4554 goto fail; 4555 4556 if (iftype == NL80211_IFTYPE_MONITOR) { 4557 struct nlattr *flags; 4558 4559 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS); 4560 if (!flags || 4561 nla_put_flag(msg, NL80211_MNTR_FLAG_COOK_FRAMES)) 4562 goto fail; 4563 4564 nla_nest_end(msg, flags); 4565 } else if (wds) { 4566 if (nla_put_u8(msg, NL80211_ATTR_4ADDR, wds)) 4567 goto fail; 4568 } 4569 4570 /* 4571 * Tell cfg80211 that the interface belongs to the socket that created 4572 * it, and the interface should be deleted when the socket is closed. 4573 */ 4574 if (nla_put_flag(msg, NL80211_ATTR_IFACE_SOCKET_OWNER)) 4575 goto fail; 4576 4577 ret = send_and_recv_msgs(drv, msg, handler, arg); 4578 msg = NULL; 4579 if (ret) { 4580 fail: 4581 nlmsg_free(msg); 4582 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)", 4583 ifname, ret, strerror(-ret)); 4584 return ret; 4585 } 4586 4587 if (iftype == NL80211_IFTYPE_P2P_DEVICE) 4588 return 0; 4589 4590 ifidx = if_nametoindex(ifname); 4591 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d", 4592 ifname, ifidx); 4593 4594 if (ifidx <= 0) 4595 return -1; 4596 4597 /* 4598 * Some virtual interfaces need to process EAPOL packets and events on 4599 * the parent interface. This is used mainly with hostapd. 4600 */ 4601 if (drv->hostapd || 4602 iftype == NL80211_IFTYPE_AP_VLAN || 4603 iftype == NL80211_IFTYPE_WDS || 4604 iftype == NL80211_IFTYPE_MONITOR) { 4605 /* start listening for EAPOL on this interface */ 4606 add_ifidx(drv, ifidx, IFIDX_ANY); 4607 } 4608 4609 if (addr && iftype != NL80211_IFTYPE_MONITOR && 4610 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) { 4611 nl80211_remove_iface(drv, ifidx); 4612 return -1; 4613 } 4614 4615 return ifidx; 4616 } 4617 4618 4619 int nl80211_create_iface(struct wpa_driver_nl80211_data *drv, 4620 const char *ifname, enum nl80211_iftype iftype, 4621 const u8 *addr, int wds, 4622 int (*handler)(struct nl_msg *, void *), 4623 void *arg, int use_existing) 4624 { 4625 int ret; 4626 4627 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler, 4628 arg); 4629 4630 /* if error occurred and interface exists already */ 4631 if (ret == -ENFILE && if_nametoindex(ifname)) { 4632 if (use_existing) { 4633 wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s", 4634 ifname); 4635 if (addr && iftype != NL80211_IFTYPE_MONITOR && 4636 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, 4637 addr) < 0 && 4638 (linux_set_iface_flags(drv->global->ioctl_sock, 4639 ifname, 0) < 0 || 4640 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, 4641 addr) < 0 || 4642 linux_set_iface_flags(drv->global->ioctl_sock, 4643 ifname, 1) < 0)) 4644 return -1; 4645 return -ENFILE; 4646 } 4647 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname); 4648 4649 /* Try to remove the interface that was already there. */ 4650 nl80211_remove_iface(drv, if_nametoindex(ifname)); 4651 4652 /* Try to create the interface again */ 4653 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, 4654 wds, handler, arg); 4655 } 4656 4657 if (ret >= 0 && is_p2p_net_interface(iftype)) { 4658 wpa_printf(MSG_DEBUG, 4659 "nl80211: Interface %s created for P2P - disable 11b rates", 4660 ifname); 4661 nl80211_disable_11b_rates(drv, ret, 1); 4662 } 4663 4664 return ret; 4665 } 4666 4667 4668 static int nl80211_setup_ap(struct i802_bss *bss) 4669 { 4670 struct wpa_driver_nl80211_data *drv = bss->drv; 4671 4672 wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d", 4673 bss->ifname, drv->device_ap_sme, drv->use_monitor); 4674 4675 /* 4676 * Disable Probe Request reporting unless we need it in this way for 4677 * devices that include the AP SME, in the other case (unless using 4678 * monitor iface) we'll get it through the nl_mgmt socket instead. 4679 */ 4680 if (!drv->device_ap_sme) 4681 wpa_driver_nl80211_probe_req_report(bss, 0); 4682 4683 if (!drv->device_ap_sme && !drv->use_monitor) 4684 if (nl80211_mgmt_subscribe_ap(bss)) 4685 return -1; 4686 4687 if (drv->device_ap_sme && !drv->use_monitor) 4688 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 4689 wpa_printf(MSG_DEBUG, 4690 "nl80211: Failed to subscribe for mgmt frames from SME driver - trying to run without it"); 4691 4692 if (!drv->device_ap_sme && drv->use_monitor && 4693 nl80211_create_monitor_interface(drv) && 4694 !drv->device_ap_sme) 4695 return -1; 4696 4697 if (drv->device_ap_sme && 4698 wpa_driver_nl80211_probe_req_report(bss, 1) < 0) { 4699 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable " 4700 "Probe Request frame reporting in AP mode"); 4701 /* Try to survive without this */ 4702 } 4703 4704 return 0; 4705 } 4706 4707 4708 static void nl80211_teardown_ap(struct i802_bss *bss) 4709 { 4710 struct wpa_driver_nl80211_data *drv = bss->drv; 4711 4712 wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d", 4713 bss->ifname, drv->device_ap_sme, drv->use_monitor); 4714 if (drv->device_ap_sme) { 4715 wpa_driver_nl80211_probe_req_report(bss, 0); 4716 if (!drv->use_monitor) 4717 nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)"); 4718 } else if (drv->use_monitor) 4719 nl80211_remove_monitor_interface(drv); 4720 else 4721 nl80211_mgmt_unsubscribe(bss, "AP teardown"); 4722 4723 nl80211_put_wiphy_data_ap(bss); 4724 bss->beacon_set = 0; 4725 } 4726 4727 4728 static int nl80211_send_eapol_data(struct i802_bss *bss, 4729 const u8 *addr, const u8 *data, 4730 size_t data_len) 4731 { 4732 struct sockaddr_ll ll; 4733 int ret; 4734 4735 if (bss->drv->eapol_tx_sock < 0) { 4736 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL"); 4737 return -1; 4738 } 4739 4740 os_memset(&ll, 0, sizeof(ll)); 4741 ll.sll_family = AF_PACKET; 4742 ll.sll_ifindex = bss->ifindex; 4743 ll.sll_protocol = htons(ETH_P_PAE); 4744 ll.sll_halen = ETH_ALEN; 4745 os_memcpy(ll.sll_addr, addr, ETH_ALEN); 4746 ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0, 4747 (struct sockaddr *) &ll, sizeof(ll)); 4748 if (ret < 0) 4749 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s", 4750 strerror(errno)); 4751 4752 return ret; 4753 } 4754 4755 4756 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 4757 4758 static int wpa_driver_nl80211_hapd_send_eapol( 4759 void *priv, const u8 *addr, const u8 *data, 4760 size_t data_len, int encrypt, const u8 *own_addr, u32 flags) 4761 { 4762 struct i802_bss *bss = priv; 4763 struct wpa_driver_nl80211_data *drv = bss->drv; 4764 struct ieee80211_hdr *hdr; 4765 size_t len; 4766 u8 *pos; 4767 int res; 4768 int qos = flags & WPA_STA_WMM; 4769 4770 if (drv->device_ap_sme || !drv->use_monitor) 4771 return nl80211_send_eapol_data(bss, addr, data, data_len); 4772 4773 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 + 4774 data_len; 4775 hdr = os_zalloc(len); 4776 if (hdr == NULL) { 4777 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)", 4778 (unsigned long) len); 4779 return -1; 4780 } 4781 4782 hdr->frame_control = 4783 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA); 4784 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS); 4785 if (encrypt) 4786 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP); 4787 if (qos) { 4788 hdr->frame_control |= 4789 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4); 4790 } 4791 4792 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN); 4793 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 4794 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 4795 pos = (u8 *) (hdr + 1); 4796 4797 if (qos) { 4798 /* Set highest priority in QoS header */ 4799 pos[0] = 7; 4800 pos[1] = 0; 4801 pos += 2; 4802 } 4803 4804 memcpy(pos, rfc1042_header, sizeof(rfc1042_header)); 4805 pos += sizeof(rfc1042_header); 4806 WPA_PUT_BE16(pos, ETH_P_PAE); 4807 pos += 2; 4808 memcpy(pos, data, data_len); 4809 4810 res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0, 4811 0, 0, 0, 0, NULL, 0); 4812 if (res < 0) { 4813 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - " 4814 "failed: %d (%s)", 4815 (unsigned long) len, errno, strerror(errno)); 4816 } 4817 os_free(hdr); 4818 4819 return res; 4820 } 4821 4822 4823 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr, 4824 unsigned int total_flags, 4825 unsigned int flags_or, 4826 unsigned int flags_and) 4827 { 4828 struct i802_bss *bss = priv; 4829 struct nl_msg *msg; 4830 struct nlattr *flags; 4831 struct nl80211_sta_flag_update upd; 4832 4833 wpa_printf(MSG_DEBUG, "nl80211: Set STA flags - ifname=%s addr=" MACSTR 4834 " total_flags=0x%x flags_or=0x%x flags_and=0x%x authorized=%d", 4835 bss->ifname, MAC2STR(addr), total_flags, flags_or, flags_and, 4836 !!(total_flags & WPA_STA_AUTHORIZED)); 4837 4838 if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) || 4839 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 4840 goto fail; 4841 4842 /* 4843 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This 4844 * can be removed eventually. 4845 */ 4846 flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS); 4847 if (!flags || 4848 ((total_flags & WPA_STA_AUTHORIZED) && 4849 nla_put_flag(msg, NL80211_STA_FLAG_AUTHORIZED)) || 4850 ((total_flags & WPA_STA_WMM) && 4851 nla_put_flag(msg, NL80211_STA_FLAG_WME)) || 4852 ((total_flags & WPA_STA_SHORT_PREAMBLE) && 4853 nla_put_flag(msg, NL80211_STA_FLAG_SHORT_PREAMBLE)) || 4854 ((total_flags & WPA_STA_MFP) && 4855 nla_put_flag(msg, NL80211_STA_FLAG_MFP)) || 4856 ((total_flags & WPA_STA_TDLS_PEER) && 4857 nla_put_flag(msg, NL80211_STA_FLAG_TDLS_PEER))) 4858 goto fail; 4859 4860 nla_nest_end(msg, flags); 4861 4862 os_memset(&upd, 0, sizeof(upd)); 4863 upd.mask = sta_flags_nl80211(flags_or | ~flags_and); 4864 upd.set = sta_flags_nl80211(flags_or); 4865 if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd)) 4866 goto fail; 4867 4868 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 4869 fail: 4870 nlmsg_free(msg); 4871 return -ENOBUFS; 4872 } 4873 4874 4875 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv, 4876 struct wpa_driver_associate_params *params) 4877 { 4878 enum nl80211_iftype nlmode, old_mode; 4879 4880 if (params->p2p) { 4881 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P " 4882 "group (GO)"); 4883 nlmode = NL80211_IFTYPE_P2P_GO; 4884 } else 4885 nlmode = NL80211_IFTYPE_AP; 4886 4887 old_mode = drv->nlmode; 4888 if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) { 4889 nl80211_remove_monitor_interface(drv); 4890 return -1; 4891 } 4892 4893 if (params->freq.freq && 4894 nl80211_set_channel(drv->first_bss, ¶ms->freq, 0)) { 4895 if (old_mode != nlmode) 4896 wpa_driver_nl80211_set_mode(drv->first_bss, old_mode); 4897 nl80211_remove_monitor_interface(drv); 4898 return -1; 4899 } 4900 4901 return 0; 4902 } 4903 4904 4905 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv, 4906 int reset_mode) 4907 { 4908 struct nl_msg *msg; 4909 int ret; 4910 4911 msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_IBSS); 4912 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4913 if (ret) { 4914 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d " 4915 "(%s)", ret, strerror(-ret)); 4916 } else { 4917 wpa_printf(MSG_DEBUG, 4918 "nl80211: Leave IBSS request sent successfully"); 4919 } 4920 4921 if (reset_mode && 4922 wpa_driver_nl80211_set_mode(drv->first_bss, 4923 NL80211_IFTYPE_STATION)) { 4924 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into " 4925 "station mode"); 4926 } 4927 4928 return ret; 4929 } 4930 4931 4932 static int nl80211_ht_vht_overrides(struct nl_msg *msg, 4933 struct wpa_driver_associate_params *params) 4934 { 4935 if (params->disable_ht && nla_put_flag(msg, NL80211_ATTR_DISABLE_HT)) 4936 return -1; 4937 4938 if (params->htcaps && params->htcaps_mask) { 4939 int sz = sizeof(struct ieee80211_ht_capabilities); 4940 wpa_hexdump(MSG_DEBUG, " * htcaps", params->htcaps, sz); 4941 wpa_hexdump(MSG_DEBUG, " * htcaps_mask", 4942 params->htcaps_mask, sz); 4943 if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY, sz, 4944 params->htcaps) || 4945 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 4946 params->htcaps_mask)) 4947 return -1; 4948 } 4949 4950 #ifdef CONFIG_VHT_OVERRIDES 4951 if (params->disable_vht) { 4952 wpa_printf(MSG_DEBUG, " * VHT disabled"); 4953 if (nla_put_flag(msg, NL80211_ATTR_DISABLE_VHT)) 4954 return -1; 4955 } 4956 4957 if (params->vhtcaps && params->vhtcaps_mask) { 4958 int sz = sizeof(struct ieee80211_vht_capabilities); 4959 wpa_hexdump(MSG_DEBUG, " * vhtcaps", params->vhtcaps, sz); 4960 wpa_hexdump(MSG_DEBUG, " * vhtcaps_mask", 4961 params->vhtcaps_mask, sz); 4962 if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY, sz, 4963 params->vhtcaps) || 4964 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz, 4965 params->vhtcaps_mask)) 4966 return -1; 4967 } 4968 #endif /* CONFIG_VHT_OVERRIDES */ 4969 4970 return 0; 4971 } 4972 4973 4974 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv, 4975 struct wpa_driver_associate_params *params) 4976 { 4977 struct nl_msg *msg; 4978 int ret = -1; 4979 int count = 0; 4980 4981 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex); 4982 4983 if (wpa_driver_nl80211_set_mode_ibss(drv->first_bss, ¶ms->freq)) { 4984 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into " 4985 "IBSS mode"); 4986 return -1; 4987 } 4988 4989 retry: 4990 if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_IBSS)) || 4991 params->ssid == NULL || params->ssid_len > sizeof(drv->ssid)) 4992 goto fail; 4993 4994 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 4995 params->ssid, params->ssid_len); 4996 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid)) 4997 goto fail; 4998 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 4999 drv->ssid_len = params->ssid_len; 5000 5001 if (nl80211_put_freq_params(msg, ¶ms->freq) < 0 || 5002 nl80211_put_beacon_int(msg, params->beacon_int)) 5003 goto fail; 5004 5005 ret = nl80211_set_conn_keys(params, msg); 5006 if (ret) 5007 goto fail; 5008 5009 if (params->bssid && params->fixed_bssid) { 5010 wpa_printf(MSG_DEBUG, " * BSSID=" MACSTR, 5011 MAC2STR(params->bssid)); 5012 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid)) 5013 goto fail; 5014 } 5015 5016 if (params->fixed_freq) { 5017 wpa_printf(MSG_DEBUG, " * fixed_freq"); 5018 if (nla_put_flag(msg, NL80211_ATTR_FREQ_FIXED)) 5019 goto fail; 5020 } 5021 5022 if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X || 5023 params->key_mgmt_suite == WPA_KEY_MGMT_PSK || 5024 params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 || 5025 params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) { 5026 wpa_printf(MSG_DEBUG, " * control port"); 5027 if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT)) 5028 goto fail; 5029 } 5030 5031 if (params->wpa_ie) { 5032 wpa_hexdump(MSG_DEBUG, 5033 " * Extra IEs for Beacon/Probe Response frames", 5034 params->wpa_ie, params->wpa_ie_len); 5035 if (nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len, 5036 params->wpa_ie)) 5037 goto fail; 5038 } 5039 5040 ret = nl80211_ht_vht_overrides(msg, params); 5041 if (ret < 0) 5042 goto fail; 5043 5044 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5045 msg = NULL; 5046 if (ret) { 5047 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)", 5048 ret, strerror(-ret)); 5049 count++; 5050 if (ret == -EALREADY && count == 1) { 5051 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after " 5052 "forced leave"); 5053 nl80211_leave_ibss(drv, 0); 5054 nlmsg_free(msg); 5055 goto retry; 5056 } 5057 } else { 5058 wpa_printf(MSG_DEBUG, 5059 "nl80211: Join IBSS request sent successfully"); 5060 } 5061 5062 fail: 5063 nlmsg_free(msg); 5064 return ret; 5065 } 5066 5067 5068 static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv, 5069 struct wpa_driver_associate_params *params, 5070 struct nl_msg *msg) 5071 { 5072 if (nla_put_flag(msg, NL80211_ATTR_IFACE_SOCKET_OWNER)) 5073 return -1; 5074 5075 if (params->bssid) { 5076 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 5077 MAC2STR(params->bssid)); 5078 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid)) 5079 return -1; 5080 } 5081 5082 if (params->bssid_hint) { 5083 wpa_printf(MSG_DEBUG, " * bssid_hint=" MACSTR, 5084 MAC2STR(params->bssid_hint)); 5085 if (nla_put(msg, NL80211_ATTR_MAC_HINT, ETH_ALEN, 5086 params->bssid_hint)) 5087 return -1; 5088 } 5089 5090 if (params->freq.freq) { 5091 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq.freq); 5092 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, 5093 params->freq.freq)) 5094 return -1; 5095 drv->assoc_freq = params->freq.freq; 5096 } else 5097 drv->assoc_freq = 0; 5098 5099 if (params->freq_hint) { 5100 wpa_printf(MSG_DEBUG, " * freq_hint=%d", params->freq_hint); 5101 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_HINT, 5102 params->freq_hint)) 5103 return -1; 5104 } 5105 5106 if (params->bg_scan_period >= 0) { 5107 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 5108 params->bg_scan_period); 5109 if (nla_put_u16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 5110 params->bg_scan_period)) 5111 return -1; 5112 } 5113 5114 if (params->ssid) { 5115 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 5116 params->ssid, params->ssid_len); 5117 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, 5118 params->ssid)) 5119 return -1; 5120 if (params->ssid_len > sizeof(drv->ssid)) 5121 return -1; 5122 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 5123 drv->ssid_len = params->ssid_len; 5124 } 5125 5126 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 5127 if (params->wpa_ie && 5128 nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len, params->wpa_ie)) 5129 return -1; 5130 5131 if (params->wpa_proto) { 5132 enum nl80211_wpa_versions ver = 0; 5133 5134 if (params->wpa_proto & WPA_PROTO_WPA) 5135 ver |= NL80211_WPA_VERSION_1; 5136 if (params->wpa_proto & WPA_PROTO_RSN) 5137 ver |= NL80211_WPA_VERSION_2; 5138 5139 wpa_printf(MSG_DEBUG, " * WPA Versions 0x%x", ver); 5140 if (nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver)) 5141 return -1; 5142 } 5143 5144 if (params->pairwise_suite != WPA_CIPHER_NONE) { 5145 u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite); 5146 wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher); 5147 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, 5148 cipher)) 5149 return -1; 5150 } 5151 5152 if (params->group_suite == WPA_CIPHER_GTK_NOT_USED && 5153 !(drv->capa.enc & WPA_DRIVER_CAPA_ENC_GTK_NOT_USED)) { 5154 /* 5155 * This is likely to work even though many drivers do not 5156 * advertise support for operations without GTK. 5157 */ 5158 wpa_printf(MSG_DEBUG, " * skip group cipher configuration for GTK_NOT_USED due to missing driver support advertisement"); 5159 } else if (params->group_suite != WPA_CIPHER_NONE) { 5160 u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite); 5161 wpa_printf(MSG_DEBUG, " * group=0x%x", cipher); 5162 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher)) 5163 return -1; 5164 } 5165 5166 if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X || 5167 params->key_mgmt_suite == WPA_KEY_MGMT_PSK || 5168 params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X || 5169 params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK || 5170 params->key_mgmt_suite == WPA_KEY_MGMT_CCKM || 5171 params->key_mgmt_suite == WPA_KEY_MGMT_OSEN || 5172 params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 || 5173 params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 || 5174 params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B || 5175 params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) { 5176 int mgmt = RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X; 5177 5178 switch (params->key_mgmt_suite) { 5179 case WPA_KEY_MGMT_CCKM: 5180 mgmt = RSN_AUTH_KEY_MGMT_CCKM; 5181 break; 5182 case WPA_KEY_MGMT_IEEE8021X: 5183 mgmt = RSN_AUTH_KEY_MGMT_UNSPEC_802_1X; 5184 break; 5185 case WPA_KEY_MGMT_FT_IEEE8021X: 5186 mgmt = RSN_AUTH_KEY_MGMT_FT_802_1X; 5187 break; 5188 case WPA_KEY_MGMT_FT_PSK: 5189 mgmt = RSN_AUTH_KEY_MGMT_FT_PSK; 5190 break; 5191 case WPA_KEY_MGMT_IEEE8021X_SHA256: 5192 mgmt = RSN_AUTH_KEY_MGMT_802_1X_SHA256; 5193 break; 5194 case WPA_KEY_MGMT_PSK_SHA256: 5195 mgmt = RSN_AUTH_KEY_MGMT_PSK_SHA256; 5196 break; 5197 case WPA_KEY_MGMT_OSEN: 5198 mgmt = RSN_AUTH_KEY_MGMT_OSEN; 5199 break; 5200 case WPA_KEY_MGMT_IEEE8021X_SUITE_B: 5201 mgmt = RSN_AUTH_KEY_MGMT_802_1X_SUITE_B; 5202 break; 5203 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192: 5204 mgmt = RSN_AUTH_KEY_MGMT_802_1X_SUITE_B_192; 5205 break; 5206 case WPA_KEY_MGMT_PSK: 5207 default: 5208 mgmt = RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X; 5209 break; 5210 } 5211 wpa_printf(MSG_DEBUG, " * akm=0x%x", mgmt); 5212 if (nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, mgmt)) 5213 return -1; 5214 } 5215 5216 if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT)) 5217 return -1; 5218 5219 if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_NO_WPA && 5220 (params->pairwise_suite == WPA_CIPHER_NONE || 5221 params->pairwise_suite == WPA_CIPHER_WEP104 || 5222 params->pairwise_suite == WPA_CIPHER_WEP40) && 5223 (nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, ETH_P_PAE) || 5224 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT))) 5225 return -1; 5226 5227 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED && 5228 nla_put_u32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED)) 5229 return -1; 5230 5231 if (params->rrm_used) { 5232 u32 drv_rrm_flags = drv->capa.rrm_flags; 5233 if ((!((drv_rrm_flags & 5234 WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) && 5235 (drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET)) && 5236 !(drv_rrm_flags & WPA_DRIVER_FLAGS_SUPPORT_RRM)) || 5237 nla_put_flag(msg, NL80211_ATTR_USE_RRM)) 5238 return -1; 5239 } 5240 5241 if (nl80211_ht_vht_overrides(msg, params) < 0) 5242 return -1; 5243 5244 if (params->p2p) 5245 wpa_printf(MSG_DEBUG, " * P2P group"); 5246 5247 if (params->pbss) { 5248 wpa_printf(MSG_DEBUG, " * PBSS"); 5249 if (nla_put_flag(msg, NL80211_ATTR_PBSS)) 5250 return -1; 5251 } 5252 5253 drv->connect_reassoc = 0; 5254 if (params->prev_bssid) { 5255 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR, 5256 MAC2STR(params->prev_bssid)); 5257 if (nla_put(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN, 5258 params->prev_bssid)) 5259 return -1; 5260 drv->connect_reassoc = 1; 5261 } 5262 5263 return 0; 5264 } 5265 5266 5267 static int wpa_driver_nl80211_try_connect( 5268 struct wpa_driver_nl80211_data *drv, 5269 struct wpa_driver_associate_params *params) 5270 { 5271 struct nl_msg *msg; 5272 enum nl80211_auth_type type; 5273 int ret; 5274 int algs; 5275 5276 #ifdef CONFIG_DRIVER_NL80211_QCA 5277 if (params->req_key_mgmt_offload && params->psk && 5278 (params->key_mgmt_suite == WPA_KEY_MGMT_PSK || 5279 params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 || 5280 params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) { 5281 wpa_printf(MSG_DEBUG, "nl80211: Key management set PSK"); 5282 ret = issue_key_mgmt_set_key(drv, params->psk, 32); 5283 if (ret) 5284 return ret; 5285 } 5286 #endif /* CONFIG_DRIVER_NL80211_QCA */ 5287 5288 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex); 5289 msg = nl80211_drv_msg(drv, 0, NL80211_CMD_CONNECT); 5290 if (!msg) 5291 return -1; 5292 5293 ret = nl80211_connect_common(drv, params, msg); 5294 if (ret) 5295 goto fail; 5296 5297 algs = 0; 5298 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 5299 algs++; 5300 if (params->auth_alg & WPA_AUTH_ALG_SHARED) 5301 algs++; 5302 if (params->auth_alg & WPA_AUTH_ALG_LEAP) 5303 algs++; 5304 if (algs > 1) { 5305 wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic " 5306 "selection"); 5307 goto skip_auth_type; 5308 } 5309 5310 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 5311 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 5312 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 5313 type = NL80211_AUTHTYPE_SHARED_KEY; 5314 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 5315 type = NL80211_AUTHTYPE_NETWORK_EAP; 5316 else if (params->auth_alg & WPA_AUTH_ALG_FT) 5317 type = NL80211_AUTHTYPE_FT; 5318 else 5319 goto fail; 5320 5321 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 5322 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type)) 5323 goto fail; 5324 5325 skip_auth_type: 5326 ret = nl80211_set_conn_keys(params, msg); 5327 if (ret) 5328 goto fail; 5329 5330 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5331 msg = NULL; 5332 if (ret) { 5333 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d " 5334 "(%s)", ret, strerror(-ret)); 5335 } else { 5336 wpa_printf(MSG_DEBUG, 5337 "nl80211: Connect request send successfully"); 5338 } 5339 5340 fail: 5341 nlmsg_free(msg); 5342 return ret; 5343 5344 } 5345 5346 5347 static int wpa_driver_nl80211_connect( 5348 struct wpa_driver_nl80211_data *drv, 5349 struct wpa_driver_associate_params *params) 5350 { 5351 int ret; 5352 5353 /* Store the connection attempted bssid for future use */ 5354 if (params->bssid) 5355 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN); 5356 else 5357 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN); 5358 5359 ret = wpa_driver_nl80211_try_connect(drv, params); 5360 if (ret == -EALREADY) { 5361 /* 5362 * cfg80211 does not currently accept new connections if 5363 * we are already connected. As a workaround, force 5364 * disconnection and try again. 5365 */ 5366 wpa_printf(MSG_DEBUG, "nl80211: Explicitly " 5367 "disconnecting before reassociation " 5368 "attempt"); 5369 if (wpa_driver_nl80211_disconnect( 5370 drv, WLAN_REASON_PREV_AUTH_NOT_VALID)) 5371 return -1; 5372 ret = wpa_driver_nl80211_try_connect(drv, params); 5373 } 5374 return ret; 5375 } 5376 5377 5378 static int wpa_driver_nl80211_associate( 5379 void *priv, struct wpa_driver_associate_params *params) 5380 { 5381 struct i802_bss *bss = priv; 5382 struct wpa_driver_nl80211_data *drv = bss->drv; 5383 int ret = -1; 5384 struct nl_msg *msg; 5385 5386 nl80211_unmask_11b_rates(bss); 5387 5388 if (params->mode == IEEE80211_MODE_AP) 5389 return wpa_driver_nl80211_ap(drv, params); 5390 5391 if (params->mode == IEEE80211_MODE_IBSS) 5392 return wpa_driver_nl80211_ibss(drv, params); 5393 5394 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) { 5395 enum nl80211_iftype nlmode = params->p2p ? 5396 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 5397 5398 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0) 5399 return -1; 5400 return wpa_driver_nl80211_connect(drv, params); 5401 } 5402 5403 nl80211_mark_disconnected(drv); 5404 5405 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)", 5406 drv->ifindex); 5407 msg = nl80211_drv_msg(drv, 0, NL80211_CMD_ASSOCIATE); 5408 if (!msg) 5409 return -1; 5410 5411 ret = nl80211_connect_common(drv, params, msg); 5412 if (ret) 5413 goto fail; 5414 5415 if (params->fils_kek) { 5416 wpa_printf(MSG_DEBUG, " * FILS KEK (len=%u)", 5417 (unsigned int) params->fils_kek_len); 5418 if (nla_put(msg, NL80211_ATTR_FILS_KEK, params->fils_kek_len, 5419 params->fils_kek)) 5420 goto fail; 5421 } 5422 if (params->fils_nonces) { 5423 wpa_hexdump(MSG_DEBUG, " * FILS nonces (for AAD)", 5424 params->fils_nonces, 5425 params->fils_nonces_len); 5426 if (nla_put(msg, NL80211_ATTR_FILS_NONCES, 5427 params->fils_nonces_len, params->fils_nonces)) 5428 goto fail; 5429 } 5430 5431 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5432 msg = NULL; 5433 if (ret) { 5434 wpa_dbg(drv->ctx, MSG_DEBUG, 5435 "nl80211: MLME command failed (assoc): ret=%d (%s)", 5436 ret, strerror(-ret)); 5437 nl80211_dump_scan(drv); 5438 } else { 5439 wpa_printf(MSG_DEBUG, 5440 "nl80211: Association request send successfully"); 5441 } 5442 5443 fail: 5444 nlmsg_free(msg); 5445 return ret; 5446 } 5447 5448 5449 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv, 5450 int ifindex, enum nl80211_iftype mode) 5451 { 5452 struct nl_msg *msg; 5453 int ret = -ENOBUFS; 5454 5455 wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)", 5456 ifindex, mode, nl80211_iftype_str(mode)); 5457 5458 msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_SET_INTERFACE); 5459 if (!msg || nla_put_u32(msg, NL80211_ATTR_IFTYPE, mode)) 5460 goto fail; 5461 5462 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5463 msg = NULL; 5464 if (!ret) 5465 return 0; 5466 fail: 5467 nlmsg_free(msg); 5468 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:" 5469 " %d (%s)", ifindex, mode, ret, strerror(-ret)); 5470 return ret; 5471 } 5472 5473 5474 static int wpa_driver_nl80211_set_mode_impl( 5475 struct i802_bss *bss, 5476 enum nl80211_iftype nlmode, 5477 struct hostapd_freq_params *desired_freq_params) 5478 { 5479 struct wpa_driver_nl80211_data *drv = bss->drv; 5480 int ret = -1; 5481 int i; 5482 int was_ap = is_ap_interface(drv->nlmode); 5483 int res; 5484 int mode_switch_res; 5485 5486 if (TEST_FAIL()) 5487 return -1; 5488 5489 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode); 5490 if (mode_switch_res && nlmode == nl80211_get_ifmode(bss)) 5491 mode_switch_res = 0; 5492 5493 if (mode_switch_res == 0) { 5494 drv->nlmode = nlmode; 5495 ret = 0; 5496 goto done; 5497 } 5498 5499 if (mode_switch_res == -ENODEV) 5500 return -1; 5501 5502 if (nlmode == drv->nlmode) { 5503 wpa_printf(MSG_DEBUG, "nl80211: Interface already in " 5504 "requested mode - ignore error"); 5505 ret = 0; 5506 goto done; /* Already in the requested mode */ 5507 } 5508 5509 /* mac80211 doesn't allow mode changes while the device is up, so 5510 * take the device down, try to set the mode again, and bring the 5511 * device back up. 5512 */ 5513 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting " 5514 "interface down"); 5515 for (i = 0; i < 10; i++) { 5516 res = i802_set_iface_flags(bss, 0); 5517 if (res == -EACCES || res == -ENODEV) 5518 break; 5519 if (res != 0) { 5520 wpa_printf(MSG_DEBUG, "nl80211: Failed to set " 5521 "interface down"); 5522 os_sleep(0, 100000); 5523 continue; 5524 } 5525 5526 /* 5527 * Setting the mode will fail for some drivers if the phy is 5528 * on a frequency that the mode is disallowed in. 5529 */ 5530 if (desired_freq_params) { 5531 res = nl80211_set_channel(bss, desired_freq_params, 0); 5532 if (res) { 5533 wpa_printf(MSG_DEBUG, 5534 "nl80211: Failed to set frequency on interface"); 5535 } 5536 } 5537 5538 /* Try to set the mode again while the interface is down */ 5539 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode); 5540 if (mode_switch_res == -EBUSY) { 5541 wpa_printf(MSG_DEBUG, 5542 "nl80211: Delaying mode set while interface going down"); 5543 os_sleep(0, 100000); 5544 continue; 5545 } 5546 ret = mode_switch_res; 5547 break; 5548 } 5549 5550 if (!ret) { 5551 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while " 5552 "interface is down"); 5553 drv->nlmode = nlmode; 5554 drv->ignore_if_down_event = 1; 5555 } 5556 5557 /* Bring the interface back up */ 5558 res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1); 5559 if (res != 0) { 5560 wpa_printf(MSG_DEBUG, 5561 "nl80211: Failed to set interface up after switching mode"); 5562 ret = -1; 5563 } 5564 5565 done: 5566 if (ret) { 5567 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d " 5568 "from %d failed", nlmode, drv->nlmode); 5569 return ret; 5570 } 5571 5572 if (is_p2p_net_interface(nlmode)) { 5573 wpa_printf(MSG_DEBUG, 5574 "nl80211: Interface %s mode change to P2P - disable 11b rates", 5575 bss->ifname); 5576 nl80211_disable_11b_rates(drv, drv->ifindex, 1); 5577 } else if (drv->disabled_11b_rates) { 5578 wpa_printf(MSG_DEBUG, 5579 "nl80211: Interface %s mode changed to non-P2P - re-enable 11b rates", 5580 bss->ifname); 5581 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 5582 } 5583 5584 if (is_ap_interface(nlmode)) { 5585 nl80211_mgmt_unsubscribe(bss, "start AP"); 5586 /* Setup additional AP mode functionality if needed */ 5587 if (nl80211_setup_ap(bss)) 5588 return -1; 5589 } else if (was_ap) { 5590 /* Remove additional AP mode functionality */ 5591 nl80211_teardown_ap(bss); 5592 } else { 5593 nl80211_mgmt_unsubscribe(bss, "mode change"); 5594 } 5595 5596 if (is_mesh_interface(nlmode) && 5597 nl80211_mgmt_subscribe_mesh(bss)) 5598 return -1; 5599 5600 if (!bss->in_deinit && !is_ap_interface(nlmode) && 5601 !is_mesh_interface(nlmode) && 5602 nl80211_mgmt_subscribe_non_ap(bss) < 0) 5603 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action " 5604 "frame processing - ignore for now"); 5605 5606 return 0; 5607 } 5608 5609 5610 int wpa_driver_nl80211_set_mode(struct i802_bss *bss, 5611 enum nl80211_iftype nlmode) 5612 { 5613 return wpa_driver_nl80211_set_mode_impl(bss, nlmode, NULL); 5614 } 5615 5616 5617 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss, 5618 struct hostapd_freq_params *freq) 5619 { 5620 return wpa_driver_nl80211_set_mode_impl(bss, NL80211_IFTYPE_ADHOC, 5621 freq); 5622 } 5623 5624 5625 static int wpa_driver_nl80211_get_capa(void *priv, 5626 struct wpa_driver_capa *capa) 5627 { 5628 struct i802_bss *bss = priv; 5629 struct wpa_driver_nl80211_data *drv = bss->drv; 5630 5631 if (!drv->has_capability) 5632 return -1; 5633 os_memcpy(capa, &drv->capa, sizeof(*capa)); 5634 if (drv->extended_capa && drv->extended_capa_mask) { 5635 capa->extended_capa = drv->extended_capa; 5636 capa->extended_capa_mask = drv->extended_capa_mask; 5637 capa->extended_capa_len = drv->extended_capa_len; 5638 } 5639 5640 return 0; 5641 } 5642 5643 5644 static int wpa_driver_nl80211_set_operstate(void *priv, int state) 5645 { 5646 struct i802_bss *bss = priv; 5647 struct wpa_driver_nl80211_data *drv = bss->drv; 5648 5649 wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)", 5650 bss->ifname, drv->operstate, state, 5651 state ? "UP" : "DORMANT"); 5652 drv->operstate = state; 5653 return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1, 5654 state ? IF_OPER_UP : IF_OPER_DORMANT); 5655 } 5656 5657 5658 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized) 5659 { 5660 struct i802_bss *bss = priv; 5661 struct wpa_driver_nl80211_data *drv = bss->drv; 5662 struct nl_msg *msg; 5663 struct nl80211_sta_flag_update upd; 5664 int ret; 5665 5666 if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) { 5667 wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated"); 5668 return 0; 5669 } 5670 5671 wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for " 5672 MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid)); 5673 5674 os_memset(&upd, 0, sizeof(upd)); 5675 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED); 5676 if (authorized) 5677 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED); 5678 5679 if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) || 5680 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid) || 5681 nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd)) { 5682 nlmsg_free(msg); 5683 return -ENOBUFS; 5684 } 5685 5686 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5687 if (!ret) 5688 return 0; 5689 wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)", 5690 ret, strerror(-ret)); 5691 return ret; 5692 } 5693 5694 5695 /* Set kernel driver on given frequency (MHz) */ 5696 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq) 5697 { 5698 struct i802_bss *bss = priv; 5699 return nl80211_set_channel(bss, freq, 0); 5700 } 5701 5702 5703 static inline int min_int(int a, int b) 5704 { 5705 if (a < b) 5706 return a; 5707 return b; 5708 } 5709 5710 5711 static int get_key_handler(struct nl_msg *msg, void *arg) 5712 { 5713 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 5714 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 5715 5716 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5717 genlmsg_attrlen(gnlh, 0), NULL); 5718 5719 /* 5720 * TODO: validate the key index and mac address! 5721 * Otherwise, there's a race condition as soon as 5722 * the kernel starts sending key notifications. 5723 */ 5724 5725 if (tb[NL80211_ATTR_KEY_SEQ]) 5726 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]), 5727 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6)); 5728 return NL_SKIP; 5729 } 5730 5731 5732 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr, 5733 int idx, u8 *seq) 5734 { 5735 struct i802_bss *bss = priv; 5736 struct wpa_driver_nl80211_data *drv = bss->drv; 5737 struct nl_msg *msg; 5738 5739 msg = nl80211_ifindex_msg(drv, if_nametoindex(iface), 0, 5740 NL80211_CMD_GET_KEY); 5741 if (!msg || 5742 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) || 5743 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, idx)) { 5744 nlmsg_free(msg); 5745 return -ENOBUFS; 5746 } 5747 5748 memset(seq, 0, 6); 5749 5750 return send_and_recv_msgs(drv, msg, get_key_handler, seq); 5751 } 5752 5753 5754 static int i802_set_rts(void *priv, int rts) 5755 { 5756 struct i802_bss *bss = priv; 5757 struct wpa_driver_nl80211_data *drv = bss->drv; 5758 struct nl_msg *msg; 5759 int ret; 5760 u32 val; 5761 5762 if (rts >= 2347) 5763 val = (u32) -1; 5764 else 5765 val = rts; 5766 5767 if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) || 5768 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val)) { 5769 nlmsg_free(msg); 5770 return -ENOBUFS; 5771 } 5772 5773 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5774 if (!ret) 5775 return 0; 5776 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: " 5777 "%d (%s)", rts, ret, strerror(-ret)); 5778 return ret; 5779 } 5780 5781 5782 static int i802_set_frag(void *priv, int frag) 5783 { 5784 struct i802_bss *bss = priv; 5785 struct wpa_driver_nl80211_data *drv = bss->drv; 5786 struct nl_msg *msg; 5787 int ret; 5788 u32 val; 5789 5790 if (frag >= 2346) 5791 val = (u32) -1; 5792 else 5793 val = frag; 5794 5795 if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) || 5796 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val)) { 5797 nlmsg_free(msg); 5798 return -ENOBUFS; 5799 } 5800 5801 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5802 if (!ret) 5803 return 0; 5804 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold " 5805 "%d: %d (%s)", frag, ret, strerror(-ret)); 5806 return ret; 5807 } 5808 5809 5810 static int i802_flush(void *priv) 5811 { 5812 struct i802_bss *bss = priv; 5813 struct nl_msg *msg; 5814 int res; 5815 5816 wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)", 5817 bss->ifname); 5818 5819 /* 5820 * XXX: FIX! this needs to flush all VLANs too 5821 */ 5822 msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION); 5823 res = send_and_recv_msgs(bss->drv, msg, NULL, NULL); 5824 if (res) { 5825 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d " 5826 "(%s)", res, strerror(-res)); 5827 } 5828 return res; 5829 } 5830 5831 5832 static int get_sta_handler(struct nl_msg *msg, void *arg) 5833 { 5834 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 5835 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 5836 struct hostap_sta_driver_data *data = arg; 5837 struct nlattr *stats[NL80211_STA_INFO_MAX + 1]; 5838 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = { 5839 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 }, 5840 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 }, 5841 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 }, 5842 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 }, 5843 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 }, 5844 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 }, 5845 [NL80211_STA_INFO_RX_BYTES64] = { .type = NLA_U64 }, 5846 [NL80211_STA_INFO_TX_BYTES64] = { .type = NLA_U64 }, 5847 }; 5848 5849 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5850 genlmsg_attrlen(gnlh, 0), NULL); 5851 5852 /* 5853 * TODO: validate the interface and mac address! 5854 * Otherwise, there's a race condition as soon as 5855 * the kernel starts sending station notifications. 5856 */ 5857 5858 if (!tb[NL80211_ATTR_STA_INFO]) { 5859 wpa_printf(MSG_DEBUG, "sta stats missing!"); 5860 return NL_SKIP; 5861 } 5862 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX, 5863 tb[NL80211_ATTR_STA_INFO], 5864 stats_policy)) { 5865 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!"); 5866 return NL_SKIP; 5867 } 5868 5869 if (stats[NL80211_STA_INFO_INACTIVE_TIME]) 5870 data->inactive_msec = 5871 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]); 5872 /* For backwards compatibility, fetch the 32-bit counters first. */ 5873 if (stats[NL80211_STA_INFO_RX_BYTES]) 5874 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]); 5875 if (stats[NL80211_STA_INFO_TX_BYTES]) 5876 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]); 5877 if (stats[NL80211_STA_INFO_RX_BYTES64] && 5878 stats[NL80211_STA_INFO_TX_BYTES64]) { 5879 /* 5880 * The driver supports 64-bit counters, so use them to override 5881 * the 32-bit values. 5882 */ 5883 data->rx_bytes = 5884 nla_get_u64(stats[NL80211_STA_INFO_RX_BYTES64]); 5885 data->tx_bytes = 5886 nla_get_u64(stats[NL80211_STA_INFO_TX_BYTES64]); 5887 data->bytes_64bit = 1; 5888 } 5889 if (stats[NL80211_STA_INFO_RX_PACKETS]) 5890 data->rx_packets = 5891 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]); 5892 if (stats[NL80211_STA_INFO_TX_PACKETS]) 5893 data->tx_packets = 5894 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]); 5895 if (stats[NL80211_STA_INFO_TX_FAILED]) 5896 data->tx_retry_failed = 5897 nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]); 5898 5899 return NL_SKIP; 5900 } 5901 5902 static int i802_read_sta_data(struct i802_bss *bss, 5903 struct hostap_sta_driver_data *data, 5904 const u8 *addr) 5905 { 5906 struct nl_msg *msg; 5907 5908 if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_GET_STATION)) || 5909 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) { 5910 nlmsg_free(msg); 5911 return -ENOBUFS; 5912 } 5913 5914 return send_and_recv_msgs(bss->drv, msg, get_sta_handler, data); 5915 } 5916 5917 5918 static int i802_set_tx_queue_params(void *priv, int queue, int aifs, 5919 int cw_min, int cw_max, int burst_time) 5920 { 5921 struct i802_bss *bss = priv; 5922 struct wpa_driver_nl80211_data *drv = bss->drv; 5923 struct nl_msg *msg; 5924 struct nlattr *txq, *params; 5925 5926 msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_WIPHY); 5927 if (!msg) 5928 return -1; 5929 5930 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS); 5931 if (!txq) 5932 goto fail; 5933 5934 /* We are only sending parameters for a single TXQ at a time */ 5935 params = nla_nest_start(msg, 1); 5936 if (!params) 5937 goto fail; 5938 5939 switch (queue) { 5940 case 0: 5941 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO)) 5942 goto fail; 5943 break; 5944 case 1: 5945 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI)) 5946 goto fail; 5947 break; 5948 case 2: 5949 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE)) 5950 goto fail; 5951 break; 5952 case 3: 5953 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK)) 5954 goto fail; 5955 break; 5956 } 5957 /* Burst time is configured in units of 0.1 msec and TXOP parameter in 5958 * 32 usec, so need to convert the value here. */ 5959 if (nla_put_u16(msg, NL80211_TXQ_ATTR_TXOP, 5960 (burst_time * 100 + 16) / 32) || 5961 nla_put_u16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min) || 5962 nla_put_u16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max) || 5963 nla_put_u8(msg, NL80211_TXQ_ATTR_AIFS, aifs)) 5964 goto fail; 5965 5966 nla_nest_end(msg, params); 5967 5968 nla_nest_end(msg, txq); 5969 5970 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 5971 return 0; 5972 msg = NULL; 5973 fail: 5974 nlmsg_free(msg); 5975 return -1; 5976 } 5977 5978 5979 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr, 5980 const char *ifname, int vlan_id) 5981 { 5982 struct wpa_driver_nl80211_data *drv = bss->drv; 5983 struct nl_msg *msg; 5984 int ret; 5985 5986 wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR 5987 ", ifname=%s[%d], vlan_id=%d)", 5988 bss->ifname, if_nametoindex(bss->ifname), 5989 MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id); 5990 if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) || 5991 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 5992 nla_put_u32(msg, NL80211_ATTR_STA_VLAN, if_nametoindex(ifname))) { 5993 nlmsg_free(msg); 5994 return -ENOBUFS; 5995 } 5996 5997 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5998 if (ret < 0) { 5999 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr=" 6000 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)", 6001 MAC2STR(addr), ifname, vlan_id, ret, 6002 strerror(-ret)); 6003 } 6004 return ret; 6005 } 6006 6007 6008 static int i802_get_inact_sec(void *priv, const u8 *addr) 6009 { 6010 struct hostap_sta_driver_data data; 6011 int ret; 6012 6013 os_memset(&data, 0, sizeof(data)); 6014 data.inactive_msec = (unsigned long) -1; 6015 ret = i802_read_sta_data(priv, &data, addr); 6016 if (ret == -ENOENT) 6017 return -ENOENT; 6018 if (ret || data.inactive_msec == (unsigned long) -1) 6019 return -1; 6020 return data.inactive_msec / 1000; 6021 } 6022 6023 6024 static int i802_sta_clear_stats(void *priv, const u8 *addr) 6025 { 6026 #if 0 6027 /* TODO */ 6028 #endif 6029 return 0; 6030 } 6031 6032 6033 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, 6034 int reason) 6035 { 6036 struct i802_bss *bss = priv; 6037 struct wpa_driver_nl80211_data *drv = bss->drv; 6038 struct ieee80211_mgmt mgmt; 6039 u8 channel; 6040 6041 if (ieee80211_freq_to_chan(bss->freq, &channel) == 6042 HOSTAPD_MODE_IEEE80211AD) { 6043 /* Deauthentication is not used in DMG/IEEE 802.11ad; 6044 * disassociate the STA instead. */ 6045 return i802_sta_disassoc(priv, own_addr, addr, reason); 6046 } 6047 6048 if (is_mesh_interface(drv->nlmode)) 6049 return -1; 6050 6051 if (drv->device_ap_sme) 6052 return wpa_driver_nl80211_sta_remove(bss, addr, 1, reason); 6053 6054 memset(&mgmt, 0, sizeof(mgmt)); 6055 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 6056 WLAN_FC_STYPE_DEAUTH); 6057 memcpy(mgmt.da, addr, ETH_ALEN); 6058 memcpy(mgmt.sa, own_addr, ETH_ALEN); 6059 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 6060 mgmt.u.deauth.reason_code = host_to_le16(reason); 6061 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 6062 IEEE80211_HDRLEN + 6063 sizeof(mgmt.u.deauth), 0, 0, 0, 0, 6064 0, NULL, 0); 6065 } 6066 6067 6068 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr, 6069 int reason) 6070 { 6071 struct i802_bss *bss = priv; 6072 struct wpa_driver_nl80211_data *drv = bss->drv; 6073 struct ieee80211_mgmt mgmt; 6074 6075 if (is_mesh_interface(drv->nlmode)) 6076 return -1; 6077 6078 if (drv->device_ap_sme) 6079 return wpa_driver_nl80211_sta_remove(bss, addr, 0, reason); 6080 6081 memset(&mgmt, 0, sizeof(mgmt)); 6082 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 6083 WLAN_FC_STYPE_DISASSOC); 6084 memcpy(mgmt.da, addr, ETH_ALEN); 6085 memcpy(mgmt.sa, own_addr, ETH_ALEN); 6086 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 6087 mgmt.u.disassoc.reason_code = host_to_le16(reason); 6088 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 6089 IEEE80211_HDRLEN + 6090 sizeof(mgmt.u.disassoc), 0, 0, 0, 0, 6091 0, NULL, 0); 6092 } 6093 6094 6095 static void dump_ifidx(struct wpa_driver_nl80211_data *drv) 6096 { 6097 char buf[200], *pos, *end; 6098 int i, res; 6099 6100 pos = buf; 6101 end = pos + sizeof(buf); 6102 6103 for (i = 0; i < drv->num_if_indices; i++) { 6104 if (!drv->if_indices[i]) 6105 continue; 6106 res = os_snprintf(pos, end - pos, " %d(%d)", 6107 drv->if_indices[i], 6108 drv->if_indices_reason[i]); 6109 if (os_snprintf_error(end - pos, res)) 6110 break; 6111 pos += res; 6112 } 6113 *pos = '\0'; 6114 6115 wpa_printf(MSG_DEBUG, "nl80211: if_indices[%d]:%s", 6116 drv->num_if_indices, buf); 6117 } 6118 6119 6120 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx, 6121 int ifidx_reason) 6122 { 6123 int i; 6124 int *old, *old_reason; 6125 6126 wpa_printf(MSG_DEBUG, 6127 "nl80211: Add own interface ifindex %d (ifidx_reason %d)", 6128 ifidx, ifidx_reason); 6129 if (have_ifidx(drv, ifidx, ifidx_reason)) { 6130 wpa_printf(MSG_DEBUG, "nl80211: ifindex %d already in the list", 6131 ifidx); 6132 return; 6133 } 6134 for (i = 0; i < drv->num_if_indices; i++) { 6135 if (drv->if_indices[i] == 0) { 6136 drv->if_indices[i] = ifidx; 6137 drv->if_indices_reason[i] = ifidx_reason; 6138 dump_ifidx(drv); 6139 return; 6140 } 6141 } 6142 6143 if (drv->if_indices != drv->default_if_indices) 6144 old = drv->if_indices; 6145 else 6146 old = NULL; 6147 6148 if (drv->if_indices_reason != drv->default_if_indices_reason) 6149 old_reason = drv->if_indices_reason; 6150 else 6151 old_reason = NULL; 6152 6153 drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1, 6154 sizeof(int)); 6155 drv->if_indices_reason = os_realloc_array(old_reason, 6156 drv->num_if_indices + 1, 6157 sizeof(int)); 6158 if (!drv->if_indices) { 6159 if (!old) 6160 drv->if_indices = drv->default_if_indices; 6161 else 6162 drv->if_indices = old; 6163 } 6164 if (!drv->if_indices_reason) { 6165 if (!old_reason) 6166 drv->if_indices_reason = drv->default_if_indices_reason; 6167 else 6168 drv->if_indices_reason = old_reason; 6169 } 6170 if (!drv->if_indices || !drv->if_indices_reason) { 6171 wpa_printf(MSG_ERROR, "Failed to reallocate memory for " 6172 "interfaces"); 6173 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx); 6174 return; 6175 } 6176 if (!old) 6177 os_memcpy(drv->if_indices, drv->default_if_indices, 6178 sizeof(drv->default_if_indices)); 6179 if (!old_reason) 6180 os_memcpy(drv->if_indices_reason, 6181 drv->default_if_indices_reason, 6182 sizeof(drv->default_if_indices_reason)); 6183 drv->if_indices[drv->num_if_indices] = ifidx; 6184 drv->if_indices_reason[drv->num_if_indices] = ifidx_reason; 6185 drv->num_if_indices++; 6186 dump_ifidx(drv); 6187 } 6188 6189 6190 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx, 6191 int ifidx_reason) 6192 { 6193 int i; 6194 6195 for (i = 0; i < drv->num_if_indices; i++) { 6196 if ((drv->if_indices[i] == ifidx || ifidx == IFIDX_ANY) && 6197 (drv->if_indices_reason[i] == ifidx_reason || 6198 ifidx_reason == IFIDX_ANY)) { 6199 drv->if_indices[i] = 0; 6200 break; 6201 } 6202 } 6203 dump_ifidx(drv); 6204 } 6205 6206 6207 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx, 6208 int ifidx_reason) 6209 { 6210 int i; 6211 6212 for (i = 0; i < drv->num_if_indices; i++) 6213 if (drv->if_indices[i] == ifidx && 6214 (drv->if_indices_reason[i] == ifidx_reason || 6215 ifidx_reason == IFIDX_ANY)) 6216 return 1; 6217 6218 return 0; 6219 } 6220 6221 6222 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val, 6223 const char *bridge_ifname, char *ifname_wds) 6224 { 6225 struct i802_bss *bss = priv; 6226 struct wpa_driver_nl80211_data *drv = bss->drv; 6227 char name[IFNAMSIZ + 1]; 6228 6229 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid); 6230 if (ifname_wds) 6231 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1); 6232 6233 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR 6234 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name); 6235 if (val) { 6236 if (!if_nametoindex(name)) { 6237 if (nl80211_create_iface(drv, name, 6238 NL80211_IFTYPE_AP_VLAN, 6239 bss->addr, 1, NULL, NULL, 0) < 6240 0) 6241 return -1; 6242 if (bridge_ifname && 6243 linux_br_add_if(drv->global->ioctl_sock, 6244 bridge_ifname, name) < 0) 6245 return -1; 6246 } 6247 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) { 6248 wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA " 6249 "interface %s up", name); 6250 } 6251 return i802_set_sta_vlan(priv, addr, name, 0); 6252 } else { 6253 if (bridge_ifname) 6254 linux_br_del_if(drv->global->ioctl_sock, bridge_ifname, 6255 name); 6256 6257 i802_set_sta_vlan(priv, addr, bss->ifname, 0); 6258 nl80211_remove_iface(drv, if_nametoindex(name)); 6259 return 0; 6260 } 6261 } 6262 6263 6264 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx) 6265 { 6266 struct wpa_driver_nl80211_data *drv = eloop_ctx; 6267 struct sockaddr_ll lladdr; 6268 unsigned char buf[3000]; 6269 int len; 6270 socklen_t fromlen = sizeof(lladdr); 6271 6272 len = recvfrom(sock, buf, sizeof(buf), 0, 6273 (struct sockaddr *)&lladdr, &fromlen); 6274 if (len < 0) { 6275 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s", 6276 strerror(errno)); 6277 return; 6278 } 6279 6280 if (have_ifidx(drv, lladdr.sll_ifindex, IFIDX_ANY)) 6281 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len); 6282 } 6283 6284 6285 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv, 6286 struct i802_bss *bss, 6287 const char *brname, const char *ifname) 6288 { 6289 int br_ifindex; 6290 char in_br[IFNAMSIZ]; 6291 6292 os_strlcpy(bss->brname, brname, IFNAMSIZ); 6293 br_ifindex = if_nametoindex(brname); 6294 if (br_ifindex == 0) { 6295 /* 6296 * Bridge was configured, but the bridge device does 6297 * not exist. Try to add it now. 6298 */ 6299 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) { 6300 wpa_printf(MSG_ERROR, "nl80211: Failed to add the " 6301 "bridge interface %s: %s", 6302 brname, strerror(errno)); 6303 return -1; 6304 } 6305 bss->added_bridge = 1; 6306 br_ifindex = if_nametoindex(brname); 6307 add_ifidx(drv, br_ifindex, drv->ifindex); 6308 } 6309 bss->br_ifindex = br_ifindex; 6310 6311 if (linux_br_get(in_br, ifname) == 0) { 6312 if (os_strcmp(in_br, brname) == 0) 6313 return 0; /* already in the bridge */ 6314 6315 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from " 6316 "bridge %s", ifname, in_br); 6317 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) < 6318 0) { 6319 wpa_printf(MSG_ERROR, "nl80211: Failed to " 6320 "remove interface %s from bridge " 6321 "%s: %s", 6322 ifname, brname, strerror(errno)); 6323 return -1; 6324 } 6325 } 6326 6327 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s", 6328 ifname, brname); 6329 if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) { 6330 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s " 6331 "into bridge %s: %s", 6332 ifname, brname, strerror(errno)); 6333 return -1; 6334 } 6335 bss->added_if_into_bridge = 1; 6336 6337 return 0; 6338 } 6339 6340 6341 static void *i802_init(struct hostapd_data *hapd, 6342 struct wpa_init_params *params) 6343 { 6344 struct wpa_driver_nl80211_data *drv; 6345 struct i802_bss *bss; 6346 size_t i; 6347 char master_ifname[IFNAMSIZ]; 6348 int ifindex, br_ifindex = 0; 6349 int br_added = 0; 6350 6351 bss = wpa_driver_nl80211_drv_init(hapd, params->ifname, 6352 params->global_priv, 1, 6353 params->bssid, params->driver_params); 6354 if (bss == NULL) 6355 return NULL; 6356 6357 drv = bss->drv; 6358 6359 if (linux_br_get(master_ifname, params->ifname) == 0) { 6360 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s", 6361 params->ifname, master_ifname); 6362 br_ifindex = if_nametoindex(master_ifname); 6363 os_strlcpy(bss->brname, master_ifname, IFNAMSIZ); 6364 } else if ((params->num_bridge == 0 || !params->bridge[0]) && 6365 linux_master_get(master_ifname, params->ifname) == 0) { 6366 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in master %s", 6367 params->ifname, master_ifname); 6368 /* start listening for EAPOL on the master interface */ 6369 add_ifidx(drv, if_nametoindex(master_ifname), drv->ifindex); 6370 6371 /* check if master itself is under bridge */ 6372 if (linux_br_get(master_ifname, master_ifname) == 0) { 6373 wpa_printf(MSG_DEBUG, "nl80211: which is in bridge %s", 6374 master_ifname); 6375 br_ifindex = if_nametoindex(master_ifname); 6376 os_strlcpy(bss->brname, master_ifname, IFNAMSIZ); 6377 } 6378 } else { 6379 master_ifname[0] = '\0'; 6380 } 6381 6382 bss->br_ifindex = br_ifindex; 6383 6384 for (i = 0; i < params->num_bridge; i++) { 6385 if (params->bridge[i]) { 6386 ifindex = if_nametoindex(params->bridge[i]); 6387 if (ifindex) 6388 add_ifidx(drv, ifindex, drv->ifindex); 6389 if (ifindex == br_ifindex) 6390 br_added = 1; 6391 } 6392 } 6393 6394 /* start listening for EAPOL on the default AP interface */ 6395 add_ifidx(drv, drv->ifindex, IFIDX_ANY); 6396 6397 if (params->num_bridge && params->bridge[0]) { 6398 if (i802_check_bridge(drv, bss, params->bridge[0], 6399 params->ifname) < 0) 6400 goto failed; 6401 if (os_strcmp(params->bridge[0], master_ifname) != 0) 6402 br_added = 1; 6403 } 6404 6405 if (!br_added && br_ifindex && 6406 (params->num_bridge == 0 || !params->bridge[0])) 6407 add_ifidx(drv, br_ifindex, drv->ifindex); 6408 6409 #ifdef CONFIG_LIBNL3_ROUTE 6410 if (bss->added_if_into_bridge) { 6411 drv->rtnl_sk = nl_socket_alloc(); 6412 if (drv->rtnl_sk == NULL) { 6413 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate nl_sock"); 6414 goto failed; 6415 } 6416 6417 if (nl_connect(drv->rtnl_sk, NETLINK_ROUTE)) { 6418 wpa_printf(MSG_ERROR, "nl80211: Failed to connect nl_sock to NETLINK_ROUTE: %s", 6419 strerror(errno)); 6420 goto failed; 6421 } 6422 } 6423 #endif /* CONFIG_LIBNL3_ROUTE */ 6424 6425 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE)); 6426 if (drv->eapol_sock < 0) { 6427 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s", 6428 strerror(errno)); 6429 goto failed; 6430 } 6431 6432 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL)) 6433 { 6434 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol"); 6435 goto failed; 6436 } 6437 6438 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 6439 params->own_addr)) 6440 goto failed; 6441 os_memcpy(drv->perm_addr, params->own_addr, ETH_ALEN); 6442 6443 memcpy(bss->addr, params->own_addr, ETH_ALEN); 6444 6445 return bss; 6446 6447 failed: 6448 wpa_driver_nl80211_deinit(bss); 6449 return NULL; 6450 } 6451 6452 6453 static void i802_deinit(void *priv) 6454 { 6455 struct i802_bss *bss = priv; 6456 wpa_driver_nl80211_deinit(bss); 6457 } 6458 6459 6460 static enum nl80211_iftype wpa_driver_nl80211_if_type( 6461 enum wpa_driver_if_type type) 6462 { 6463 switch (type) { 6464 case WPA_IF_STATION: 6465 return NL80211_IFTYPE_STATION; 6466 case WPA_IF_P2P_CLIENT: 6467 case WPA_IF_P2P_GROUP: 6468 return NL80211_IFTYPE_P2P_CLIENT; 6469 case WPA_IF_AP_VLAN: 6470 return NL80211_IFTYPE_AP_VLAN; 6471 case WPA_IF_AP_BSS: 6472 return NL80211_IFTYPE_AP; 6473 case WPA_IF_P2P_GO: 6474 return NL80211_IFTYPE_P2P_GO; 6475 case WPA_IF_P2P_DEVICE: 6476 return NL80211_IFTYPE_P2P_DEVICE; 6477 case WPA_IF_MESH: 6478 return NL80211_IFTYPE_MESH_POINT; 6479 default: 6480 return -1; 6481 } 6482 } 6483 6484 6485 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr) 6486 { 6487 struct wpa_driver_nl80211_data *drv; 6488 dl_list_for_each(drv, &global->interfaces, 6489 struct wpa_driver_nl80211_data, list) { 6490 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0) 6491 return 1; 6492 } 6493 return 0; 6494 } 6495 6496 6497 static int nl80211_vif_addr(struct wpa_driver_nl80211_data *drv, u8 *new_addr) 6498 { 6499 unsigned int idx; 6500 6501 if (!drv->global) 6502 return -1; 6503 6504 os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN); 6505 for (idx = 0; idx < 64; idx++) { 6506 new_addr[0] = drv->first_bss->addr[0] | 0x02; 6507 new_addr[0] ^= idx << 2; 6508 if (!nl80211_addr_in_use(drv->global, new_addr)) 6509 break; 6510 } 6511 if (idx == 64) 6512 return -1; 6513 6514 wpa_printf(MSG_DEBUG, "nl80211: Assigned new virtual interface address " 6515 MACSTR, MAC2STR(new_addr)); 6516 6517 return 0; 6518 } 6519 6520 6521 struct wdev_info { 6522 u64 wdev_id; 6523 int wdev_id_set; 6524 u8 macaddr[ETH_ALEN]; 6525 }; 6526 6527 static int nl80211_wdev_handler(struct nl_msg *msg, void *arg) 6528 { 6529 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 6530 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 6531 struct wdev_info *wi = arg; 6532 6533 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 6534 genlmsg_attrlen(gnlh, 0), NULL); 6535 if (tb[NL80211_ATTR_WDEV]) { 6536 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]); 6537 wi->wdev_id_set = 1; 6538 } 6539 6540 if (tb[NL80211_ATTR_MAC]) 6541 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]), 6542 ETH_ALEN); 6543 6544 return NL_SKIP; 6545 } 6546 6547 6548 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type, 6549 const char *ifname, const u8 *addr, 6550 void *bss_ctx, void **drv_priv, 6551 char *force_ifname, u8 *if_addr, 6552 const char *bridge, int use_existing, 6553 int setup_ap) 6554 { 6555 enum nl80211_iftype nlmode; 6556 struct i802_bss *bss = priv; 6557 struct wpa_driver_nl80211_data *drv = bss->drv; 6558 int ifidx; 6559 int added = 1; 6560 6561 if (addr) 6562 os_memcpy(if_addr, addr, ETH_ALEN); 6563 nlmode = wpa_driver_nl80211_if_type(type); 6564 if (nlmode == NL80211_IFTYPE_P2P_DEVICE) { 6565 struct wdev_info p2pdev_info; 6566 6567 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info)); 6568 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr, 6569 0, nl80211_wdev_handler, 6570 &p2pdev_info, use_existing); 6571 if (!p2pdev_info.wdev_id_set || ifidx != 0) { 6572 wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s", 6573 ifname); 6574 return -1; 6575 } 6576 6577 drv->global->if_add_wdevid = p2pdev_info.wdev_id; 6578 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set; 6579 if (!is_zero_ether_addr(p2pdev_info.macaddr)) 6580 os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN); 6581 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created", 6582 ifname, 6583 (long long unsigned int) p2pdev_info.wdev_id); 6584 } else { 6585 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr, 6586 0, NULL, NULL, use_existing); 6587 if (use_existing && ifidx == -ENFILE) { 6588 added = 0; 6589 ifidx = if_nametoindex(ifname); 6590 } else if (ifidx < 0) { 6591 return -1; 6592 } 6593 } 6594 6595 if (!addr) { 6596 if (nlmode == NL80211_IFTYPE_P2P_DEVICE) 6597 os_memcpy(if_addr, bss->addr, ETH_ALEN); 6598 else if (linux_get_ifhwaddr(drv->global->ioctl_sock, 6599 ifname, if_addr) < 0) { 6600 if (added) 6601 nl80211_remove_iface(drv, ifidx); 6602 return -1; 6603 } 6604 } 6605 6606 if (!addr && 6607 (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP || 6608 type == WPA_IF_P2P_GO || type == WPA_IF_MESH || 6609 type == WPA_IF_STATION)) { 6610 /* Enforce unique address */ 6611 u8 new_addr[ETH_ALEN]; 6612 6613 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname, 6614 new_addr) < 0) { 6615 if (added) 6616 nl80211_remove_iface(drv, ifidx); 6617 return -1; 6618 } 6619 if (nl80211_addr_in_use(drv->global, new_addr)) { 6620 wpa_printf(MSG_DEBUG, "nl80211: Allocate new address " 6621 "for interface %s type %d", ifname, type); 6622 if (nl80211_vif_addr(drv, new_addr) < 0) { 6623 if (added) 6624 nl80211_remove_iface(drv, ifidx); 6625 return -1; 6626 } 6627 if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, 6628 new_addr) < 0) { 6629 if (added) 6630 nl80211_remove_iface(drv, ifidx); 6631 return -1; 6632 } 6633 } 6634 os_memcpy(if_addr, new_addr, ETH_ALEN); 6635 } 6636 6637 if (type == WPA_IF_AP_BSS && setup_ap) { 6638 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss)); 6639 if (new_bss == NULL) { 6640 if (added) 6641 nl80211_remove_iface(drv, ifidx); 6642 return -1; 6643 } 6644 6645 if (bridge && 6646 i802_check_bridge(drv, new_bss, bridge, ifname) < 0) { 6647 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new " 6648 "interface %s to a bridge %s", 6649 ifname, bridge); 6650 if (added) 6651 nl80211_remove_iface(drv, ifidx); 6652 os_free(new_bss); 6653 return -1; 6654 } 6655 6656 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1)) 6657 { 6658 if (added) 6659 nl80211_remove_iface(drv, ifidx); 6660 os_free(new_bss); 6661 return -1; 6662 } 6663 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ); 6664 os_memcpy(new_bss->addr, if_addr, ETH_ALEN); 6665 new_bss->ifindex = ifidx; 6666 new_bss->drv = drv; 6667 new_bss->next = drv->first_bss->next; 6668 new_bss->freq = drv->first_bss->freq; 6669 new_bss->ctx = bss_ctx; 6670 new_bss->added_if = added; 6671 drv->first_bss->next = new_bss; 6672 if (drv_priv) 6673 *drv_priv = new_bss; 6674 nl80211_init_bss(new_bss); 6675 6676 /* Subscribe management frames for this WPA_IF_AP_BSS */ 6677 if (nl80211_setup_ap(new_bss)) 6678 return -1; 6679 } 6680 6681 if (drv->global) 6682 drv->global->if_add_ifindex = ifidx; 6683 6684 /* 6685 * Some virtual interfaces need to process EAPOL packets and events on 6686 * the parent interface. This is used mainly with hostapd. 6687 */ 6688 if (ifidx > 0 && 6689 (drv->hostapd || 6690 nlmode == NL80211_IFTYPE_AP_VLAN || 6691 nlmode == NL80211_IFTYPE_WDS || 6692 nlmode == NL80211_IFTYPE_MONITOR)) 6693 add_ifidx(drv, ifidx, IFIDX_ANY); 6694 6695 return 0; 6696 } 6697 6698 6699 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss, 6700 enum wpa_driver_if_type type, 6701 const char *ifname) 6702 { 6703 struct wpa_driver_nl80211_data *drv = bss->drv; 6704 int ifindex = if_nametoindex(ifname); 6705 6706 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d", 6707 __func__, type, ifname, ifindex, bss->added_if); 6708 if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex)) 6709 nl80211_remove_iface(drv, ifindex); 6710 else if (ifindex > 0 && !bss->added_if) { 6711 struct wpa_driver_nl80211_data *drv2; 6712 dl_list_for_each(drv2, &drv->global->interfaces, 6713 struct wpa_driver_nl80211_data, list) { 6714 del_ifidx(drv2, ifindex, IFIDX_ANY); 6715 del_ifidx(drv2, IFIDX_ANY, ifindex); 6716 } 6717 } 6718 6719 if (type != WPA_IF_AP_BSS) 6720 return 0; 6721 6722 if (bss->added_if_into_bridge) { 6723 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 6724 bss->ifname) < 0) 6725 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 6726 "interface %s from bridge %s: %s", 6727 bss->ifname, bss->brname, strerror(errno)); 6728 } 6729 if (bss->added_bridge) { 6730 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 6731 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 6732 "bridge %s: %s", 6733 bss->brname, strerror(errno)); 6734 } 6735 6736 if (bss != drv->first_bss) { 6737 struct i802_bss *tbss; 6738 6739 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it"); 6740 for (tbss = drv->first_bss; tbss; tbss = tbss->next) { 6741 if (tbss->next == bss) { 6742 tbss->next = bss->next; 6743 /* Unsubscribe management frames */ 6744 nl80211_teardown_ap(bss); 6745 nl80211_destroy_bss(bss); 6746 if (!bss->added_if) 6747 i802_set_iface_flags(bss, 0); 6748 os_free(bss); 6749 bss = NULL; 6750 break; 6751 } 6752 } 6753 if (bss) 6754 wpa_printf(MSG_INFO, "nl80211: %s - could not find " 6755 "BSS %p in the list", __func__, bss); 6756 } else { 6757 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context"); 6758 nl80211_teardown_ap(bss); 6759 if (!bss->added_if && !drv->first_bss->next) 6760 wpa_driver_nl80211_del_beacon(bss); 6761 nl80211_destroy_bss(bss); 6762 if (!bss->added_if) 6763 i802_set_iface_flags(bss, 0); 6764 if (drv->first_bss->next) { 6765 drv->first_bss = drv->first_bss->next; 6766 drv->ctx = drv->first_bss->ctx; 6767 os_free(bss); 6768 } else { 6769 wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to"); 6770 } 6771 } 6772 6773 return 0; 6774 } 6775 6776 6777 static int cookie_handler(struct nl_msg *msg, void *arg) 6778 { 6779 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 6780 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 6781 u64 *cookie = arg; 6782 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 6783 genlmsg_attrlen(gnlh, 0), NULL); 6784 if (tb[NL80211_ATTR_COOKIE]) 6785 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 6786 return NL_SKIP; 6787 } 6788 6789 6790 static int nl80211_send_frame_cmd(struct i802_bss *bss, 6791 unsigned int freq, unsigned int wait, 6792 const u8 *buf, size_t buf_len, 6793 u64 *cookie_out, int no_cck, int no_ack, 6794 int offchanok, const u16 *csa_offs, 6795 size_t csa_offs_len) 6796 { 6797 struct wpa_driver_nl80211_data *drv = bss->drv; 6798 struct nl_msg *msg; 6799 u64 cookie; 6800 int ret = -1; 6801 6802 wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d " 6803 "no_ack=%d offchanok=%d", 6804 freq, wait, no_cck, no_ack, offchanok); 6805 wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len); 6806 6807 if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME)) || 6808 (freq && nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) || 6809 (wait && nla_put_u32(msg, NL80211_ATTR_DURATION, wait)) || 6810 (offchanok && ((drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) || 6811 drv->test_use_roc_tx) && 6812 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) || 6813 (no_cck && nla_put_flag(msg, NL80211_ATTR_TX_NO_CCK_RATE)) || 6814 (no_ack && nla_put_flag(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK)) || 6815 (csa_offs && nla_put(msg, NL80211_ATTR_CSA_C_OFFSETS_TX, 6816 csa_offs_len * sizeof(u16), csa_offs)) || 6817 nla_put(msg, NL80211_ATTR_FRAME, buf_len, buf)) 6818 goto fail; 6819 6820 cookie = 0; 6821 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 6822 msg = NULL; 6823 if (ret) { 6824 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d " 6825 "(%s) (freq=%u wait=%u)", ret, strerror(-ret), 6826 freq, wait); 6827 } else { 6828 wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; " 6829 "cookie 0x%llx", no_ack ? " (no ACK)" : "", 6830 (long long unsigned int) cookie); 6831 6832 if (cookie_out) 6833 *cookie_out = no_ack ? (u64) -1 : cookie; 6834 6835 if (drv->num_send_action_cookies == MAX_SEND_ACTION_COOKIES) { 6836 wpa_printf(MSG_DEBUG, 6837 "nl80211: Drop oldest pending send action cookie 0x%llx", 6838 (long long unsigned int) 6839 drv->send_action_cookies[0]); 6840 os_memmove(&drv->send_action_cookies[0], 6841 &drv->send_action_cookies[1], 6842 (MAX_SEND_ACTION_COOKIES - 1) * 6843 sizeof(u64)); 6844 drv->num_send_action_cookies--; 6845 } 6846 drv->send_action_cookies[drv->num_send_action_cookies] = cookie; 6847 drv->num_send_action_cookies++; 6848 } 6849 6850 fail: 6851 nlmsg_free(msg); 6852 return ret; 6853 } 6854 6855 6856 static int wpa_driver_nl80211_send_action(struct i802_bss *bss, 6857 unsigned int freq, 6858 unsigned int wait_time, 6859 const u8 *dst, const u8 *src, 6860 const u8 *bssid, 6861 const u8 *data, size_t data_len, 6862 int no_cck) 6863 { 6864 struct wpa_driver_nl80211_data *drv = bss->drv; 6865 int ret = -1; 6866 u8 *buf; 6867 struct ieee80211_hdr *hdr; 6868 6869 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, " 6870 "freq=%u MHz wait=%d ms no_cck=%d)", 6871 drv->ifindex, freq, wait_time, no_cck); 6872 6873 buf = os_zalloc(24 + data_len); 6874 if (buf == NULL) 6875 return ret; 6876 os_memcpy(buf + 24, data, data_len); 6877 hdr = (struct ieee80211_hdr *) buf; 6878 hdr->frame_control = 6879 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION); 6880 os_memcpy(hdr->addr1, dst, ETH_ALEN); 6881 os_memcpy(hdr->addr2, src, ETH_ALEN); 6882 os_memcpy(hdr->addr3, bssid, ETH_ALEN); 6883 6884 if (os_memcmp(bss->addr, src, ETH_ALEN) != 0) { 6885 wpa_printf(MSG_DEBUG, "nl80211: Use random TA " MACSTR, 6886 MAC2STR(src)); 6887 os_memcpy(bss->rand_addr, src, ETH_ALEN); 6888 } else { 6889 os_memset(bss->rand_addr, 0, ETH_ALEN); 6890 } 6891 6892 if (is_ap_interface(drv->nlmode) && 6893 (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) || 6894 (int) freq == bss->freq || drv->device_ap_sme || 6895 !drv->use_monitor)) 6896 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len, 6897 0, freq, no_cck, 1, 6898 wait_time, NULL, 0); 6899 else 6900 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf, 6901 24 + data_len, 6902 &drv->send_action_cookie, 6903 no_cck, 0, 1, NULL, 0); 6904 6905 os_free(buf); 6906 return ret; 6907 } 6908 6909 6910 static void nl80211_frame_wait_cancel(struct i802_bss *bss, u64 cookie) 6911 { 6912 struct wpa_driver_nl80211_data *drv = bss->drv; 6913 struct nl_msg *msg; 6914 int ret; 6915 6916 wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx", 6917 (long long unsigned int) cookie); 6918 if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME_WAIT_CANCEL)) || 6919 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) { 6920 nlmsg_free(msg); 6921 return; 6922 } 6923 6924 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6925 if (ret) 6926 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d " 6927 "(%s)", ret, strerror(-ret)); 6928 } 6929 6930 6931 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv) 6932 { 6933 struct i802_bss *bss = priv; 6934 struct wpa_driver_nl80211_data *drv = bss->drv; 6935 unsigned int i; 6936 u64 cookie; 6937 6938 /* Cancel the last pending TX cookie */ 6939 nl80211_frame_wait_cancel(bss, drv->send_action_cookie); 6940 6941 /* 6942 * Cancel the other pending TX cookies, if any. This is needed since 6943 * the driver may keep a list of all pending offchannel TX operations 6944 * and free up the radio only once they have expired or cancelled. 6945 */ 6946 for (i = drv->num_send_action_cookies; i > 0; i--) { 6947 cookie = drv->send_action_cookies[i - 1]; 6948 if (cookie != drv->send_action_cookie) 6949 nl80211_frame_wait_cancel(bss, cookie); 6950 } 6951 drv->num_send_action_cookies = 0; 6952 } 6953 6954 6955 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq, 6956 unsigned int duration) 6957 { 6958 struct i802_bss *bss = priv; 6959 struct wpa_driver_nl80211_data *drv = bss->drv; 6960 struct nl_msg *msg; 6961 int ret; 6962 u64 cookie; 6963 6964 if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REMAIN_ON_CHANNEL)) || 6965 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) || 6966 nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) { 6967 nlmsg_free(msg); 6968 return -1; 6969 } 6970 6971 cookie = 0; 6972 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 6973 if (ret == 0) { 6974 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie " 6975 "0x%llx for freq=%u MHz duration=%u", 6976 (long long unsigned int) cookie, freq, duration); 6977 drv->remain_on_chan_cookie = cookie; 6978 drv->pending_remain_on_chan = 1; 6979 return 0; 6980 } 6981 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel " 6982 "(freq=%d duration=%u): %d (%s)", 6983 freq, duration, ret, strerror(-ret)); 6984 return -1; 6985 } 6986 6987 6988 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv) 6989 { 6990 struct i802_bss *bss = priv; 6991 struct wpa_driver_nl80211_data *drv = bss->drv; 6992 struct nl_msg *msg; 6993 int ret; 6994 6995 if (!drv->pending_remain_on_chan) { 6996 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel " 6997 "to cancel"); 6998 return -1; 6999 } 7000 7001 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie " 7002 "0x%llx", 7003 (long long unsigned int) drv->remain_on_chan_cookie); 7004 7005 msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL); 7006 if (!msg || 7007 nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie)) { 7008 nlmsg_free(msg); 7009 return -1; 7010 } 7011 7012 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7013 if (ret == 0) 7014 return 0; 7015 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: " 7016 "%d (%s)", ret, strerror(-ret)); 7017 return -1; 7018 } 7019 7020 7021 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report) 7022 { 7023 struct wpa_driver_nl80211_data *drv = bss->drv; 7024 7025 if (!report) { 7026 if (bss->nl_preq && drv->device_ap_sme && 7027 is_ap_interface(drv->nlmode) && !bss->in_deinit && 7028 !bss->static_ap) { 7029 /* 7030 * Do not disable Probe Request reporting that was 7031 * enabled in nl80211_setup_ap(). 7032 */ 7033 wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of " 7034 "Probe Request reporting nl_preq=%p while " 7035 "in AP mode", bss->nl_preq); 7036 } else if (bss->nl_preq) { 7037 wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request " 7038 "reporting nl_preq=%p", bss->nl_preq); 7039 nl80211_destroy_eloop_handle(&bss->nl_preq); 7040 } 7041 return 0; 7042 } 7043 7044 if (bss->nl_preq) { 7045 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting " 7046 "already on! nl_preq=%p", bss->nl_preq); 7047 return 0; 7048 } 7049 7050 bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq"); 7051 if (bss->nl_preq == NULL) 7052 return -1; 7053 wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request " 7054 "reporting nl_preq=%p", bss->nl_preq); 7055 7056 if (nl80211_register_frame(bss, bss->nl_preq, 7057 (WLAN_FC_TYPE_MGMT << 2) | 7058 (WLAN_FC_STYPE_PROBE_REQ << 4), 7059 NULL, 0) < 0) 7060 goto out_err; 7061 7062 nl80211_register_eloop_read(&bss->nl_preq, 7063 wpa_driver_nl80211_event_receive, 7064 bss->nl_cb); 7065 7066 return 0; 7067 7068 out_err: 7069 nl_destroy_handles(&bss->nl_preq); 7070 return -1; 7071 } 7072 7073 7074 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 7075 int ifindex, int disabled) 7076 { 7077 struct nl_msg *msg; 7078 struct nlattr *bands, *band; 7079 int ret; 7080 7081 wpa_printf(MSG_DEBUG, 7082 "nl80211: NL80211_CMD_SET_TX_BITRATE_MASK (ifindex=%d %s)", 7083 ifindex, disabled ? "NL80211_TXRATE_LEGACY=OFDM-only" : 7084 "no NL80211_TXRATE_LEGACY constraint"); 7085 7086 msg = nl80211_ifindex_msg(drv, ifindex, 0, 7087 NL80211_CMD_SET_TX_BITRATE_MASK); 7088 if (!msg) 7089 return -1; 7090 7091 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES); 7092 if (!bands) 7093 goto fail; 7094 7095 /* 7096 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything 7097 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS 7098 * rates. All 5 GHz rates are left enabled. 7099 */ 7100 band = nla_nest_start(msg, NL80211_BAND_2GHZ); 7101 if (!band || 7102 (disabled && nla_put(msg, NL80211_TXRATE_LEGACY, 8, 7103 "\x0c\x12\x18\x24\x30\x48\x60\x6c"))) 7104 goto fail; 7105 nla_nest_end(msg, band); 7106 7107 nla_nest_end(msg, bands); 7108 7109 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7110 if (ret) { 7111 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d " 7112 "(%s)", ret, strerror(-ret)); 7113 } else 7114 drv->disabled_11b_rates = disabled; 7115 7116 return ret; 7117 7118 fail: 7119 nlmsg_free(msg); 7120 return -1; 7121 } 7122 7123 7124 static int wpa_driver_nl80211_deinit_ap(void *priv) 7125 { 7126 struct i802_bss *bss = priv; 7127 struct wpa_driver_nl80211_data *drv = bss->drv; 7128 if (!is_ap_interface(drv->nlmode)) 7129 return -1; 7130 wpa_driver_nl80211_del_beacon(bss); 7131 bss->beacon_set = 0; 7132 7133 /* 7134 * If the P2P GO interface was dynamically added, then it is 7135 * possible that the interface change to station is not possible. 7136 */ 7137 if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic) 7138 return 0; 7139 7140 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 7141 } 7142 7143 7144 static int wpa_driver_nl80211_stop_ap(void *priv) 7145 { 7146 struct i802_bss *bss = priv; 7147 struct wpa_driver_nl80211_data *drv = bss->drv; 7148 if (!is_ap_interface(drv->nlmode)) 7149 return -1; 7150 wpa_driver_nl80211_del_beacon(bss); 7151 bss->beacon_set = 0; 7152 return 0; 7153 } 7154 7155 7156 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv) 7157 { 7158 struct i802_bss *bss = priv; 7159 struct wpa_driver_nl80211_data *drv = bss->drv; 7160 if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT) 7161 return -1; 7162 7163 /* 7164 * If the P2P Client interface was dynamically added, then it is 7165 * possible that the interface change to station is not possible. 7166 */ 7167 if (bss->if_dynamic) 7168 return 0; 7169 7170 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 7171 } 7172 7173 7174 static void wpa_driver_nl80211_resume(void *priv) 7175 { 7176 struct i802_bss *bss = priv; 7177 enum nl80211_iftype nlmode = nl80211_get_ifmode(bss); 7178 7179 if (i802_set_iface_flags(bss, 1)) 7180 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event"); 7181 7182 if (is_p2p_net_interface(nlmode)) 7183 nl80211_disable_11b_rates(bss->drv, bss->drv->ifindex, 1); 7184 } 7185 7186 7187 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis) 7188 { 7189 struct i802_bss *bss = priv; 7190 struct wpa_driver_nl80211_data *drv = bss->drv; 7191 struct nl_msg *msg; 7192 struct nlattr *cqm; 7193 7194 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d " 7195 "hysteresis=%d", threshold, hysteresis); 7196 7197 if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_CQM)) || 7198 !(cqm = nla_nest_start(msg, NL80211_ATTR_CQM)) || 7199 nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold) || 7200 nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis)) { 7201 nlmsg_free(msg); 7202 return -1; 7203 } 7204 nla_nest_end(msg, cqm); 7205 7206 return send_and_recv_msgs(drv, msg, NULL, NULL); 7207 } 7208 7209 7210 static int get_channel_width(struct nl_msg *msg, void *arg) 7211 { 7212 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7213 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7214 struct wpa_signal_info *sig_change = arg; 7215 7216 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7217 genlmsg_attrlen(gnlh, 0), NULL); 7218 7219 sig_change->center_frq1 = -1; 7220 sig_change->center_frq2 = -1; 7221 sig_change->chanwidth = CHAN_WIDTH_UNKNOWN; 7222 7223 if (tb[NL80211_ATTR_CHANNEL_WIDTH]) { 7224 sig_change->chanwidth = convert2width( 7225 nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH])); 7226 if (tb[NL80211_ATTR_CENTER_FREQ1]) 7227 sig_change->center_frq1 = 7228 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]); 7229 if (tb[NL80211_ATTR_CENTER_FREQ2]) 7230 sig_change->center_frq2 = 7231 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]); 7232 } 7233 7234 return NL_SKIP; 7235 } 7236 7237 7238 static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv, 7239 struct wpa_signal_info *sig) 7240 { 7241 struct nl_msg *msg; 7242 7243 msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_INTERFACE); 7244 return send_and_recv_msgs(drv, msg, get_channel_width, sig); 7245 } 7246 7247 7248 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si) 7249 { 7250 struct i802_bss *bss = priv; 7251 struct wpa_driver_nl80211_data *drv = bss->drv; 7252 int res; 7253 7254 os_memset(si, 0, sizeof(*si)); 7255 res = nl80211_get_link_signal(drv, si); 7256 if (res) { 7257 if (drv->nlmode != NL80211_IFTYPE_ADHOC && 7258 drv->nlmode != NL80211_IFTYPE_MESH_POINT) 7259 return res; 7260 si->current_signal = 0; 7261 } 7262 7263 res = nl80211_get_channel_width(drv, si); 7264 if (res != 0) 7265 return res; 7266 7267 return nl80211_get_link_noise(drv, si); 7268 } 7269 7270 7271 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len, 7272 int encrypt) 7273 { 7274 struct i802_bss *bss = priv; 7275 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0, 7276 0, 0, 0, 0, NULL, 0); 7277 } 7278 7279 7280 static int nl80211_set_param(void *priv, const char *param) 7281 { 7282 struct i802_bss *bss = priv; 7283 struct wpa_driver_nl80211_data *drv = bss->drv; 7284 7285 if (param == NULL) 7286 return 0; 7287 wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param); 7288 7289 #ifdef CONFIG_P2P 7290 if (os_strstr(param, "use_p2p_group_interface=1")) { 7291 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 7292 "interface"); 7293 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 7294 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 7295 } 7296 #endif /* CONFIG_P2P */ 7297 7298 if (os_strstr(param, "use_monitor=1")) 7299 drv->use_monitor = 1; 7300 7301 if (os_strstr(param, "force_connect_cmd=1")) { 7302 drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME; 7303 drv->force_connect_cmd = 1; 7304 } 7305 7306 if (os_strstr(param, "force_bss_selection=1")) 7307 drv->capa.flags |= WPA_DRIVER_FLAGS_BSS_SELECTION; 7308 7309 if (os_strstr(param, "no_offchannel_tx=1")) { 7310 drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_TX; 7311 drv->test_use_roc_tx = 1; 7312 } 7313 7314 return 0; 7315 } 7316 7317 7318 static void * nl80211_global_init(void *ctx) 7319 { 7320 struct nl80211_global *global; 7321 struct netlink_config *cfg; 7322 7323 global = os_zalloc(sizeof(*global)); 7324 if (global == NULL) 7325 return NULL; 7326 global->ctx = ctx; 7327 global->ioctl_sock = -1; 7328 dl_list_init(&global->interfaces); 7329 global->if_add_ifindex = -1; 7330 7331 cfg = os_zalloc(sizeof(*cfg)); 7332 if (cfg == NULL) 7333 goto err; 7334 7335 cfg->ctx = global; 7336 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink; 7337 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink; 7338 global->netlink = netlink_init(cfg); 7339 if (global->netlink == NULL) { 7340 os_free(cfg); 7341 goto err; 7342 } 7343 7344 if (wpa_driver_nl80211_init_nl_global(global) < 0) 7345 goto err; 7346 7347 global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0); 7348 if (global->ioctl_sock < 0) { 7349 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s", 7350 strerror(errno)); 7351 goto err; 7352 } 7353 7354 return global; 7355 7356 err: 7357 nl80211_global_deinit(global); 7358 return NULL; 7359 } 7360 7361 7362 static void nl80211_global_deinit(void *priv) 7363 { 7364 struct nl80211_global *global = priv; 7365 if (global == NULL) 7366 return; 7367 if (!dl_list_empty(&global->interfaces)) { 7368 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at " 7369 "nl80211_global_deinit", 7370 dl_list_len(&global->interfaces)); 7371 } 7372 7373 if (global->netlink) 7374 netlink_deinit(global->netlink); 7375 7376 nl_destroy_handles(&global->nl); 7377 7378 if (global->nl_event) 7379 nl80211_destroy_eloop_handle(&global->nl_event); 7380 7381 nl_cb_put(global->nl_cb); 7382 7383 if (global->ioctl_sock >= 0) 7384 close(global->ioctl_sock); 7385 7386 os_free(global); 7387 } 7388 7389 7390 static const char * nl80211_get_radio_name(void *priv) 7391 { 7392 struct i802_bss *bss = priv; 7393 struct wpa_driver_nl80211_data *drv = bss->drv; 7394 return drv->phyname; 7395 } 7396 7397 7398 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid, 7399 const u8 *pmkid) 7400 { 7401 struct nl_msg *msg; 7402 7403 if (!(msg = nl80211_bss_msg(bss, 0, cmd)) || 7404 (pmkid && nla_put(msg, NL80211_ATTR_PMKID, 16, pmkid)) || 7405 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))) { 7406 nlmsg_free(msg); 7407 return -ENOBUFS; 7408 } 7409 7410 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 7411 } 7412 7413 7414 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 7415 { 7416 struct i802_bss *bss = priv; 7417 wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid)); 7418 return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid); 7419 } 7420 7421 7422 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 7423 { 7424 struct i802_bss *bss = priv; 7425 wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR, 7426 MAC2STR(bssid)); 7427 return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid); 7428 } 7429 7430 7431 static int nl80211_flush_pmkid(void *priv) 7432 { 7433 struct i802_bss *bss = priv; 7434 wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs"); 7435 return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL); 7436 } 7437 7438 7439 static void clean_survey_results(struct survey_results *survey_results) 7440 { 7441 struct freq_survey *survey, *tmp; 7442 7443 if (dl_list_empty(&survey_results->survey_list)) 7444 return; 7445 7446 dl_list_for_each_safe(survey, tmp, &survey_results->survey_list, 7447 struct freq_survey, list) { 7448 dl_list_del(&survey->list); 7449 os_free(survey); 7450 } 7451 } 7452 7453 7454 static void add_survey(struct nlattr **sinfo, u32 ifidx, 7455 struct dl_list *survey_list) 7456 { 7457 struct freq_survey *survey; 7458 7459 survey = os_zalloc(sizeof(struct freq_survey)); 7460 if (!survey) 7461 return; 7462 7463 survey->ifidx = ifidx; 7464 survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]); 7465 survey->filled = 0; 7466 7467 if (sinfo[NL80211_SURVEY_INFO_NOISE]) { 7468 survey->nf = (int8_t) 7469 nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 7470 survey->filled |= SURVEY_HAS_NF; 7471 } 7472 7473 if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) { 7474 survey->channel_time = 7475 nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]); 7476 survey->filled |= SURVEY_HAS_CHAN_TIME; 7477 } 7478 7479 if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) { 7480 survey->channel_time_busy = 7481 nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]); 7482 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY; 7483 } 7484 7485 if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) { 7486 survey->channel_time_rx = 7487 nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]); 7488 survey->filled |= SURVEY_HAS_CHAN_TIME_RX; 7489 } 7490 7491 if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) { 7492 survey->channel_time_tx = 7493 nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]); 7494 survey->filled |= SURVEY_HAS_CHAN_TIME_TX; 7495 } 7496 7497 wpa_printf(MSG_DEBUG, "nl80211: Freq survey dump event (freq=%d MHz noise=%d channel_time=%ld busy_time=%ld tx_time=%ld rx_time=%ld filled=%04x)", 7498 survey->freq, 7499 survey->nf, 7500 (unsigned long int) survey->channel_time, 7501 (unsigned long int) survey->channel_time_busy, 7502 (unsigned long int) survey->channel_time_tx, 7503 (unsigned long int) survey->channel_time_rx, 7504 survey->filled); 7505 7506 dl_list_add_tail(survey_list, &survey->list); 7507 } 7508 7509 7510 static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq, 7511 unsigned int freq_filter) 7512 { 7513 if (!freq_filter) 7514 return 1; 7515 7516 return freq_filter == surveyed_freq; 7517 } 7518 7519 7520 static int survey_handler(struct nl_msg *msg, void *arg) 7521 { 7522 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7523 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7524 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 7525 struct survey_results *survey_results; 7526 u32 surveyed_freq = 0; 7527 u32 ifidx; 7528 7529 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 7530 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 7531 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 7532 }; 7533 7534 survey_results = (struct survey_results *) arg; 7535 7536 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7537 genlmsg_attrlen(gnlh, 0), NULL); 7538 7539 if (!tb[NL80211_ATTR_IFINDEX]) 7540 return NL_SKIP; 7541 7542 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 7543 7544 if (!tb[NL80211_ATTR_SURVEY_INFO]) 7545 return NL_SKIP; 7546 7547 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 7548 tb[NL80211_ATTR_SURVEY_INFO], 7549 survey_policy)) 7550 return NL_SKIP; 7551 7552 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) { 7553 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data"); 7554 return NL_SKIP; 7555 } 7556 7557 surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]); 7558 7559 if (!check_survey_ok(sinfo, surveyed_freq, 7560 survey_results->freq_filter)) 7561 return NL_SKIP; 7562 7563 if (survey_results->freq_filter && 7564 survey_results->freq_filter != surveyed_freq) { 7565 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz", 7566 surveyed_freq); 7567 return NL_SKIP; 7568 } 7569 7570 add_survey(sinfo, ifidx, &survey_results->survey_list); 7571 7572 return NL_SKIP; 7573 } 7574 7575 7576 static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq) 7577 { 7578 struct i802_bss *bss = priv; 7579 struct wpa_driver_nl80211_data *drv = bss->drv; 7580 struct nl_msg *msg; 7581 int err; 7582 union wpa_event_data data; 7583 struct survey_results *survey_results; 7584 7585 os_memset(&data, 0, sizeof(data)); 7586 survey_results = &data.survey_results; 7587 7588 dl_list_init(&survey_results->survey_list); 7589 7590 msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 7591 if (!msg) 7592 return -ENOBUFS; 7593 7594 if (freq) 7595 data.survey_results.freq_filter = freq; 7596 7597 do { 7598 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data"); 7599 err = send_and_recv_msgs(drv, msg, survey_handler, 7600 survey_results); 7601 } while (err > 0); 7602 7603 if (err) 7604 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data"); 7605 else 7606 wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data); 7607 7608 clean_survey_results(survey_results); 7609 return err; 7610 } 7611 7612 7613 static void nl80211_set_rekey_info(void *priv, const u8 *kek, size_t kek_len, 7614 const u8 *kck, size_t kck_len, 7615 const u8 *replay_ctr) 7616 { 7617 struct i802_bss *bss = priv; 7618 struct wpa_driver_nl80211_data *drv = bss->drv; 7619 struct nlattr *replay_nested; 7620 struct nl_msg *msg; 7621 int ret; 7622 7623 if (!drv->set_rekey_offload) 7624 return; 7625 7626 wpa_printf(MSG_DEBUG, "nl80211: Set rekey offload"); 7627 if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_REKEY_OFFLOAD)) || 7628 !(replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA)) || 7629 nla_put(msg, NL80211_REKEY_DATA_KEK, kek_len, kek) || 7630 nla_put(msg, NL80211_REKEY_DATA_KCK, kck_len, kck) || 7631 nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN, 7632 replay_ctr)) { 7633 nl80211_nlmsg_clear(msg); 7634 nlmsg_free(msg); 7635 return; 7636 } 7637 7638 nla_nest_end(msg, replay_nested); 7639 7640 ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1); 7641 if (ret == -EOPNOTSUPP) { 7642 wpa_printf(MSG_DEBUG, 7643 "nl80211: Driver does not support rekey offload"); 7644 drv->set_rekey_offload = 0; 7645 } 7646 } 7647 7648 7649 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr, 7650 const u8 *addr, int qos) 7651 { 7652 /* send data frame to poll STA and check whether 7653 * this frame is ACKed */ 7654 struct { 7655 struct ieee80211_hdr hdr; 7656 u16 qos_ctl; 7657 } STRUCT_PACKED nulldata; 7658 size_t size; 7659 7660 /* Send data frame to poll STA and check whether this frame is ACKed */ 7661 7662 os_memset(&nulldata, 0, sizeof(nulldata)); 7663 7664 if (qos) { 7665 nulldata.hdr.frame_control = 7666 IEEE80211_FC(WLAN_FC_TYPE_DATA, 7667 WLAN_FC_STYPE_QOS_NULL);