1 /* 2 * Driver interaction with Linux nl80211/cfg80211 3 * Copyright (c) 2002-2012, 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/ioctl.h> 15 #include <sys/types.h> 16 #include <sys/stat.h> 17 #include <fcntl.h> 18 #include <net/if.h> 19 #include <netlink/genl/genl.h> 20 #include <netlink/genl/family.h> 21 #include <netlink/genl/ctrl.h> 22 #include <linux/rtnetlink.h> 23 #include <netpacket/packet.h> 24 #include <linux/filter.h> 25 #include <linux/errqueue.h> 26 #include "nl80211_copy.h" 27 28 #include "common.h" 29 #include "eloop.h" 30 #include "utils/list.h" 31 #include "common/ieee802_11_defs.h" 32 #include "common/ieee802_11_common.h" 33 #include "l2_packet/l2_packet.h" 34 #include "netlink.h" 35 #include "linux_ioctl.h" 36 #include "radiotap.h" 37 #include "radiotap_iter.h" 38 #include "rfkill.h" 39 #include "driver.h" 40 41 #ifndef SO_WIFI_STATUS 42 # if defined(__sparc__) 43 # define SO_WIFI_STATUS 0x0025 44 # elif defined(__parisc__) 45 # define SO_WIFI_STATUS 0x4022 46 # else 47 # define SO_WIFI_STATUS 41 48 # endif 49 50 # define SCM_WIFI_STATUS SO_WIFI_STATUS 51 #endif 52 53 #ifndef SO_EE_ORIGIN_TXSTATUS 54 #define SO_EE_ORIGIN_TXSTATUS 4 55 #endif 56 57 #ifndef PACKET_TX_TIMESTAMP 58 #define PACKET_TX_TIMESTAMP 16 59 #endif 60 61 #ifdef ANDROID 62 #include "android_drv.h" 63 #endif /* ANDROID */ 64 #ifdef CONFIG_LIBNL20 65 /* libnl 2.0 compatibility code */ 66 #define nl_handle nl_sock 67 #define nl80211_handle_alloc nl_socket_alloc_cb 68 #define nl80211_handle_destroy nl_socket_free 69 #else 70 /* 71 * libnl 1.1 has a bug, it tries to allocate socket numbers densely 72 * but when you free a socket again it will mess up its bitmap and 73 * and use the wrong number the next time it needs a socket ID. 74 * Therefore, we wrap the handle alloc/destroy and add our own pid 75 * accounting. 76 */ 77 static uint32_t port_bitmap[32] = { 0 }; 78 79 static struct nl_handle *nl80211_handle_alloc(void *cb) 80 { 81 struct nl_handle *handle; 82 uint32_t pid = getpid() & 0x3FFFFF; 83 int i; 84 85 handle = nl_handle_alloc_cb(cb); 86 87 for (i = 0; i < 1024; i++) { 88 if (port_bitmap[i / 32] & (1 << (i % 32))) 89 continue; 90 port_bitmap[i / 32] |= 1 << (i % 32); 91 pid += i << 22; 92 break; 93 } 94 95 nl_socket_set_local_port(handle, pid); 96 97 return handle; 98 } 99 100 static void nl80211_handle_destroy(struct nl_handle *handle) 101 { 102 uint32_t port = nl_socket_get_local_port(handle); 103 104 port >>= 22; 105 port_bitmap[port / 32] &= ~(1 << (port % 32)); 106 107 nl_handle_destroy(handle); 108 } 109 #endif /* CONFIG_LIBNL20 */ 110 111 112 static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg) 113 { 114 struct nl_handle *handle; 115 116 handle = nl80211_handle_alloc(cb); 117 if (handle == NULL) { 118 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 119 "callbacks (%s)", dbg); 120 return NULL; 121 } 122 123 if (genl_connect(handle)) { 124 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic " 125 "netlink (%s)", dbg); 126 nl80211_handle_destroy(handle); 127 return NULL; 128 } 129 130 return handle; 131 } 132 133 134 static void nl_destroy_handles(struct nl_handle **handle) 135 { 136 if (*handle == NULL) 137 return; 138 nl80211_handle_destroy(*handle); 139 *handle = NULL; 140 } 141 142 143 #ifndef IFF_LOWER_UP 144 #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */ 145 #endif 146 #ifndef IFF_DORMANT 147 #define IFF_DORMANT 0x20000 /* driver signals dormant */ 148 #endif 149 150 #ifndef IF_OPER_DORMANT 151 #define IF_OPER_DORMANT 5 152 #endif 153 #ifndef IF_OPER_UP 154 #define IF_OPER_UP 6 155 #endif 156 157 struct nl80211_global { 158 struct dl_list interfaces; 159 int if_add_ifindex; 160 struct netlink_data *netlink; 161 struct nl_cb *nl_cb; 162 struct nl_handle *nl; 163 int nl80211_id; 164 int ioctl_sock; /* socket for ioctl() use */ 165 166 struct nl_handle *nl_event; 167 }; 168 169 struct nl80211_wiphy_data { 170 struct dl_list list; 171 struct dl_list bsss; 172 struct dl_list drvs; 173 174 struct nl_handle *nl_beacons; 175 struct nl_cb *nl_cb; 176 177 int wiphy_idx; 178 }; 179 180 static void nl80211_global_deinit(void *priv); 181 static void wpa_driver_nl80211_deinit(void *priv); 182 183 struct i802_bss { 184 struct wpa_driver_nl80211_data *drv; 185 struct i802_bss *next; 186 int ifindex; 187 char ifname[IFNAMSIZ + 1]; 188 char brname[IFNAMSIZ]; 189 unsigned int beacon_set:1; 190 unsigned int added_if_into_bridge:1; 191 unsigned int added_bridge:1; 192 unsigned int in_deinit:1; 193 194 u8 addr[ETH_ALEN]; 195 196 int freq; 197 198 struct nl_handle *nl_preq, *nl_mgmt; 199 struct nl_cb *nl_cb; 200 201 struct nl80211_wiphy_data *wiphy_data; 202 struct dl_list wiphy_list; 203 }; 204 205 struct wpa_driver_nl80211_data { 206 struct nl80211_global *global; 207 struct dl_list list; 208 struct dl_list wiphy_list; 209 char phyname[32]; 210 void *ctx; 211 int ifindex; 212 int if_removed; 213 int if_disabled; 214 int ignore_if_down_event; 215 struct rfkill_data *rfkill; 216 struct wpa_driver_capa capa; 217 int has_capability; 218 219 int operstate; 220 221 int scan_complete_events; 222 223 struct nl_cb *nl_cb; 224 225 u8 auth_bssid[ETH_ALEN]; 226 u8 bssid[ETH_ALEN]; 227 int associated; 228 u8 ssid[32]; 229 size_t ssid_len; 230 enum nl80211_iftype nlmode; 231 enum nl80211_iftype ap_scan_as_station; 232 unsigned int assoc_freq; 233 234 int monitor_sock; 235 int monitor_ifidx; 236 int monitor_refcount; 237 238 unsigned int disabled_11b_rates:1; 239 unsigned int pending_remain_on_chan:1; 240 unsigned int in_interface_list:1; 241 unsigned int device_ap_sme:1; 242 unsigned int poll_command_supported:1; 243 unsigned int data_tx_status:1; 244 unsigned int scan_for_auth:1; 245 unsigned int retry_auth:1; 246 unsigned int use_monitor:1; 247 248 u64 remain_on_chan_cookie; 249 u64 send_action_cookie; 250 251 unsigned int last_mgmt_freq; 252 253 struct wpa_driver_scan_filter *filter_ssids; 254 size_t num_filter_ssids; 255 256 struct i802_bss first_bss; 257 258 int eapol_tx_sock; 259 260 #ifdef HOSTAPD 261 int eapol_sock; /* socket for EAPOL frames */ 262 263 int default_if_indices[16]; 264 int *if_indices; 265 int num_if_indices; 266 267 int last_freq; 268 int last_freq_ht; 269 #endif /* HOSTAPD */ 270 271 /* From failed authentication command */ 272 int auth_freq; 273 u8 auth_bssid_[ETH_ALEN]; 274 u8 auth_ssid[32]; 275 size_t auth_ssid_len; 276 int auth_alg; 277 u8 *auth_ie; 278 size_t auth_ie_len; 279 u8 auth_wep_key[4][16]; 280 size_t auth_wep_key_len[4]; 281 int auth_wep_tx_keyidx; 282 int auth_local_state_change; 283 int auth_p2p; 284 }; 285 286 287 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, 288 void *timeout_ctx); 289 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, 290 enum nl80211_iftype nlmode); 291 static int 292 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv); 293 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 294 const u8 *addr, int cmd, u16 reason_code, 295 int local_state_change); 296 static void nl80211_remove_monitor_interface( 297 struct wpa_driver_nl80211_data *drv); 298 static int nl80211_send_frame_cmd(struct i802_bss *bss, 299 unsigned int freq, unsigned int wait, 300 const u8 *buf, size_t buf_len, u64 *cookie, 301 int no_cck, int no_ack, int offchanok); 302 static int wpa_driver_nl80211_probe_req_report(void *priv, int report); 303 #ifdef ANDROID 304 static int android_pno_start(struct i802_bss *bss, 305 struct wpa_driver_scan_params *params); 306 static int android_pno_stop(struct i802_bss *bss); 307 #endif /* ANDROID */ 308 #ifdef ANDROID_P2P 309 int wpa_driver_set_p2p_noa(void *priv, u8 count, int start, int duration); 310 int wpa_driver_get_p2p_noa(void *priv, u8 *buf, size_t len); 311 int wpa_driver_set_p2p_ps(void *priv, int legacy_ps, int opp_ps, int ctwindow); 312 int wpa_driver_set_ap_wps_p2p_ie(void *priv, const struct wpabuf *beacon, 313 const struct wpabuf *proberesp, 314 const struct wpabuf *assocresp); 315 316 #endif 317 #ifdef HOSTAPD 318 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 319 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 320 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 321 static int wpa_driver_nl80211_if_remove(void *priv, 322 enum wpa_driver_if_type type, 323 const char *ifname); 324 #else /* HOSTAPD */ 325 static inline void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 326 { 327 } 328 329 static inline void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 330 { 331 } 332 333 static inline int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 334 { 335 return 0; 336 } 337 #endif /* HOSTAPD */ 338 #ifdef ANDROID 339 extern int wpa_driver_nl80211_driver_cmd(void *priv, char *cmd, char *buf, 340 size_t buf_len); 341 #endif 342 343 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq); 344 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 345 int ifindex, int disabled); 346 347 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv); 348 static int wpa_driver_nl80211_authenticate_retry( 349 struct wpa_driver_nl80211_data *drv); 350 351 352 static int is_ap_interface(enum nl80211_iftype nlmode) 353 { 354 return (nlmode == NL80211_IFTYPE_AP || 355 nlmode == NL80211_IFTYPE_P2P_GO); 356 } 357 358 359 static int is_sta_interface(enum nl80211_iftype nlmode) 360 { 361 return (nlmode == NL80211_IFTYPE_STATION || 362 nlmode == NL80211_IFTYPE_P2P_CLIENT); 363 } 364 365 366 static int is_p2p_interface(enum nl80211_iftype nlmode) 367 { 368 return (nlmode == NL80211_IFTYPE_P2P_CLIENT || 369 nlmode == NL80211_IFTYPE_P2P_GO); 370 } 371 372 373 struct nl80211_bss_info_arg { 374 struct wpa_driver_nl80211_data *drv; 375 struct wpa_scan_results *res; 376 unsigned int assoc_freq; 377 u8 assoc_bssid[ETH_ALEN]; 378 }; 379 380 static int bss_info_handler(struct nl_msg *msg, void *arg); 381 382 383 /* nl80211 code */ 384 static int ack_handler(struct nl_msg *msg, void *arg) 385 { 386 int *err = arg; 387 *err = 0; 388 return NL_STOP; 389 } 390 391 static int finish_handler(struct nl_msg *msg, void *arg) 392 { 393 int *ret = arg; 394 *ret = 0; 395 return NL_SKIP; 396 } 397 398 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, 399 void *arg) 400 { 401 int *ret = arg; 402 *ret = err->error; 403 return NL_SKIP; 404 } 405 406 407 static int no_seq_check(struct nl_msg *msg, void *arg) 408 { 409 return NL_OK; 410 } 411 412 413 static int send_and_recv(struct nl80211_global *global, 414 struct nl_handle *nl_handle, struct nl_msg *msg, 415 int (*valid_handler)(struct nl_msg *, void *), 416 void *valid_data) 417 { 418 struct nl_cb *cb; 419 int err = -ENOMEM; 420 421 cb = nl_cb_clone(global->nl_cb); 422 if (!cb) 423 goto out; 424 425 err = nl_send_auto_complete(nl_handle, msg); 426 if (err < 0) 427 goto out; 428 429 err = 1; 430 431 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err); 432 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err); 433 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err); 434 435 if (valid_handler) 436 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, 437 valid_handler, valid_data); 438 439 while (err > 0) 440 nl_recvmsgs(nl_handle, cb); 441 out: 442 nl_cb_put(cb); 443 nlmsg_free(msg); 444 return err; 445 } 446 447 448 static int send_and_recv_msgs_global(struct nl80211_global *global, 449 struct nl_msg *msg, 450 int (*valid_handler)(struct nl_msg *, void *), 451 void *valid_data) 452 { 453 return send_and_recv(global, global->nl, msg, valid_handler, 454 valid_data); 455 } 456 457 458 #ifndef ANDROID 459 static 460 #endif 461 int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv, 462 struct nl_msg *msg, 463 int (*valid_handler)(struct nl_msg *, void *), 464 void *valid_data) 465 { 466 return send_and_recv(drv->global, drv->global->nl, msg, 467 valid_handler, valid_data); 468 } 469 470 471 struct family_data { 472 const char *group; 473 int id; 474 }; 475 476 477 static int family_handler(struct nl_msg *msg, void *arg) 478 { 479 struct family_data *res = arg; 480 struct nlattr *tb[CTRL_ATTR_MAX + 1]; 481 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 482 struct nlattr *mcgrp; 483 int i; 484 485 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 486 genlmsg_attrlen(gnlh, 0), NULL); 487 if (!tb[CTRL_ATTR_MCAST_GROUPS]) 488 return NL_SKIP; 489 490 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) { 491 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1]; 492 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp), 493 nla_len(mcgrp), NULL); 494 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] || 495 !tb2[CTRL_ATTR_MCAST_GRP_ID] || 496 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]), 497 res->group, 498 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0) 499 continue; 500 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]); 501 break; 502 }; 503 504 return NL_SKIP; 505 } 506 507 508 static int nl_get_multicast_id(struct nl80211_global *global, 509 const char *family, const char *group) 510 { 511 struct nl_msg *msg; 512 int ret = -1; 513 struct family_data res = { group, -ENOENT }; 514 515 msg = nlmsg_alloc(); 516 if (!msg) 517 return -ENOMEM; 518 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"), 519 0, 0, CTRL_CMD_GETFAMILY, 0); 520 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family); 521 522 ret = send_and_recv_msgs_global(global, msg, family_handler, &res); 523 msg = NULL; 524 if (ret == 0) 525 ret = res.id; 526 527 nla_put_failure: 528 nlmsg_free(msg); 529 return ret; 530 } 531 532 533 static void * nl80211_cmd(struct wpa_driver_nl80211_data *drv, 534 struct nl_msg *msg, int flags, uint8_t cmd) 535 { 536 return genlmsg_put(msg, 0, 0, drv->global->nl80211_id, 537 0, flags, cmd, 0); 538 } 539 540 541 struct wiphy_idx_data { 542 int wiphy_idx; 543 }; 544 545 546 static int netdev_info_handler(struct nl_msg *msg, void *arg) 547 { 548 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 549 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 550 struct wiphy_idx_data *info = arg; 551 552 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 553 genlmsg_attrlen(gnlh, 0), NULL); 554 555 if (tb[NL80211_ATTR_WIPHY]) 556 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 557 558 return NL_SKIP; 559 } 560 561 562 static int nl80211_get_wiphy_index(struct i802_bss *bss) 563 { 564 struct nl_msg *msg; 565 struct wiphy_idx_data data = { 566 .wiphy_idx = -1, 567 }; 568 569 msg = nlmsg_alloc(); 570 if (!msg) 571 return -1; 572 573 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE); 574 575 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 576 577 if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0) 578 return data.wiphy_idx; 579 msg = NULL; 580 nla_put_failure: 581 nlmsg_free(msg); 582 return -1; 583 } 584 585 586 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv, 587 struct nl80211_wiphy_data *w) 588 { 589 struct nl_msg *msg; 590 int ret = -1; 591 592 msg = nlmsg_alloc(); 593 if (!msg) 594 return -1; 595 596 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS); 597 598 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx); 599 600 ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL); 601 msg = NULL; 602 if (ret) { 603 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command " 604 "failed: ret=%d (%s)", 605 ret, strerror(-ret)); 606 goto nla_put_failure; 607 } 608 ret = 0; 609 nla_put_failure: 610 nlmsg_free(msg); 611 return ret; 612 } 613 614 615 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle) 616 { 617 struct nl80211_wiphy_data *w = eloop_ctx; 618 619 wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available"); 620 621 nl_recvmsgs(handle, w->nl_cb); 622 } 623 624 625 static int process_beacon_event(struct nl_msg *msg, void *arg) 626 { 627 struct nl80211_wiphy_data *w = arg; 628 struct wpa_driver_nl80211_data *drv; 629 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 630 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 631 union wpa_event_data event; 632 633 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 634 genlmsg_attrlen(gnlh, 0), NULL); 635 636 if (gnlh->cmd != NL80211_CMD_FRAME) { 637 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)", 638 gnlh->cmd); 639 return NL_SKIP; 640 } 641 642 if (!tb[NL80211_ATTR_FRAME]) 643 return NL_SKIP; 644 645 dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data, 646 wiphy_list) { 647 os_memset(&event, 0, sizeof(event)); 648 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]); 649 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]); 650 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 651 } 652 653 return NL_SKIP; 654 } 655 656 657 static struct nl80211_wiphy_data * 658 nl80211_get_wiphy_data_ap(struct i802_bss *bss) 659 { 660 static DEFINE_DL_LIST(nl80211_wiphys); 661 struct nl80211_wiphy_data *w; 662 int wiphy_idx, found = 0; 663 struct i802_bss *tmp_bss; 664 665 if (bss->wiphy_data != NULL) 666 return bss->wiphy_data; 667 668 wiphy_idx = nl80211_get_wiphy_index(bss); 669 670 dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) { 671 if (w->wiphy_idx == wiphy_idx) 672 goto add; 673 } 674 675 /* alloc new one */ 676 w = os_zalloc(sizeof(*w)); 677 if (w == NULL) 678 return NULL; 679 w->wiphy_idx = wiphy_idx; 680 dl_list_init(&w->bsss); 681 dl_list_init(&w->drvs); 682 683 w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 684 if (!w->nl_cb) { 685 os_free(w); 686 return NULL; 687 } 688 nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL); 689 nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event, 690 w); 691 692 w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb, 693 "wiphy beacons"); 694 if (w->nl_beacons == NULL) { 695 os_free(w); 696 return NULL; 697 } 698 699 if (nl80211_register_beacons(bss->drv, w)) { 700 nl_destroy_handles(&w->nl_beacons); 701 os_free(w); 702 return NULL; 703 } 704 705 eloop_register_read_sock(nl_socket_get_fd(w->nl_beacons), 706 nl80211_recv_beacons, w, w->nl_beacons); 707 708 dl_list_add(&nl80211_wiphys, &w->list); 709 710 add: 711 /* drv entry for this bss already there? */ 712 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) { 713 if (tmp_bss->drv == bss->drv) { 714 found = 1; 715 break; 716 } 717 } 718 /* if not add it */ 719 if (!found) 720 dl_list_add(&w->drvs, &bss->drv->wiphy_list); 721 722 dl_list_add(&w->bsss, &bss->wiphy_list); 723 bss->wiphy_data = w; 724 return w; 725 } 726 727 728 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss) 729 { 730 struct nl80211_wiphy_data *w = bss->wiphy_data; 731 struct i802_bss *tmp_bss; 732 int found = 0; 733 734 if (w == NULL) 735 return; 736 bss->wiphy_data = NULL; 737 dl_list_del(&bss->wiphy_list); 738 739 /* still any for this drv present? */ 740 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) { 741 if (tmp_bss->drv == bss->drv) { 742 found = 1; 743 break; 744 } 745 } 746 /* if not remove it */ 747 if (!found) 748 dl_list_del(&bss->drv->wiphy_list); 749 750 if (!dl_list_empty(&w->bsss)) 751 return; 752 753 eloop_unregister_read_sock(nl_socket_get_fd(w->nl_beacons)); 754 755 nl_cb_put(w->nl_cb); 756 nl_destroy_handles(&w->nl_beacons); 757 dl_list_del(&w->list); 758 os_free(w); 759 } 760 761 762 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid) 763 { 764 struct i802_bss *bss = priv; 765 struct wpa_driver_nl80211_data *drv = bss->drv; 766 if (!drv->associated) 767 return -1; 768 os_memcpy(bssid, drv->bssid, ETH_ALEN); 769 return 0; 770 } 771 772 773 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid) 774 { 775 struct i802_bss *bss = priv; 776 struct wpa_driver_nl80211_data *drv = bss->drv; 777 if (!drv->associated) 778 return -1; 779 os_memcpy(ssid, drv->ssid, drv->ssid_len); 780 return drv->ssid_len; 781 } 782 783 784 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv, 785 char *buf, size_t len, int del) 786 { 787 union wpa_event_data event; 788 789 os_memset(&event, 0, sizeof(event)); 790 if (len > sizeof(event.interface_status.ifname)) 791 len = sizeof(event.interface_status.ifname) - 1; 792 os_memcpy(event.interface_status.ifname, buf, len); 793 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED : 794 EVENT_INTERFACE_ADDED; 795 796 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s", 797 del ? "DEL" : "NEW", 798 event.interface_status.ifname, 799 del ? "removed" : "added"); 800 801 if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) { 802 if (del) { 803 if (drv->if_removed) { 804 wpa_printf(MSG_DEBUG, "nl80211: if_removed " 805 "already set - ignore event"); 806 return; 807 } 808 drv->if_removed = 1; 809 } else { 810 if (if_nametoindex(drv->first_bss.ifname) == 0) { 811 wpa_printf(MSG_DEBUG, "nl80211: Interface %s " 812 "does not exist - ignore " 813 "RTM_NEWLINK", 814 drv->first_bss.ifname); 815 return; 816 } 817 if (!drv->if_removed) { 818 wpa_printf(MSG_DEBUG, "nl80211: if_removed " 819 "already cleared - ignore event"); 820 return; 821 } 822 drv->if_removed = 0; 823 } 824 } 825 826 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event); 827 } 828 829 830 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv, 831 u8 *buf, size_t len) 832 { 833 int attrlen, rta_len; 834 struct rtattr *attr; 835 836 attrlen = len; 837 attr = (struct rtattr *) buf; 838 839 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 840 while (RTA_OK(attr, attrlen)) { 841 if (attr->rta_type == IFLA_IFNAME) { 842 if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname) 843 == 0) 844 return 1; 845 else 846 break; 847 } 848 attr = RTA_NEXT(attr, attrlen); 849 } 850 851 return 0; 852 } 853 854 855 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv, 856 int ifindex, u8 *buf, size_t len) 857 { 858 if (drv->ifindex == ifindex) 859 return 1; 860 861 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) { 862 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname); 863 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed " 864 "interface"); 865 wpa_driver_nl80211_finish_drv_init(drv); 866 return 1; 867 } 868 869 return 0; 870 } 871 872 873 static struct wpa_driver_nl80211_data * 874 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len) 875 { 876 struct wpa_driver_nl80211_data *drv; 877 dl_list_for_each(drv, &global->interfaces, 878 struct wpa_driver_nl80211_data, list) { 879 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) || 880 have_ifidx(drv, idx)) 881 return drv; 882 } 883 return NULL; 884 } 885 886 887 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx, 888 struct ifinfomsg *ifi, 889 u8 *buf, size_t len) 890 { 891 struct nl80211_global *global = ctx; 892 struct wpa_driver_nl80211_data *drv; 893 int attrlen, rta_len; 894 struct rtattr *attr; 895 u32 brid = 0; 896 char namebuf[IFNAMSIZ]; 897 898 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len); 899 if (!drv) { 900 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign " 901 "ifindex %d", ifi->ifi_index); 902 return; 903 } 904 905 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x " 906 "(%s%s%s%s)", 907 drv->operstate, ifi->ifi_flags, 908 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "", 909 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "", 910 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "", 911 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : ""); 912 913 if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) { 914 if (if_indextoname(ifi->ifi_index, namebuf) && 915 linux_iface_up(drv->global->ioctl_sock, 916 drv->first_bss.ifname) > 0) { 917 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down " 918 "event since interface %s is up", namebuf); 919 return; 920 } 921 wpa_printf(MSG_DEBUG, "nl80211: Interface down"); 922 if (drv->ignore_if_down_event) { 923 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down " 924 "event generated by mode change"); 925 drv->ignore_if_down_event = 0; 926 } else { 927 drv->if_disabled = 1; 928 wpa_supplicant_event(drv->ctx, 929 EVENT_INTERFACE_DISABLED, NULL); 930 } 931 } 932 933 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) { 934 if (if_indextoname(ifi->ifi_index, namebuf) && 935 linux_iface_up(drv->global->ioctl_sock, 936 drv->first_bss.ifname) == 0) { 937 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 938 "event since interface %s is down", 939 namebuf); 940 } else if (if_nametoindex(drv->first_bss.ifname) == 0) { 941 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 942 "event since interface %s does not exist", 943 drv->first_bss.ifname); 944 } else if (drv->if_removed) { 945 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 946 "event since interface %s is marked " 947 "removed", drv->first_bss.ifname); 948 } else { 949 wpa_printf(MSG_DEBUG, "nl80211: Interface up"); 950 drv->if_disabled = 0; 951 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, 952 NULL); 953 } 954 } 955 956 /* 957 * Some drivers send the association event before the operup event--in 958 * this case, lifting operstate in wpa_driver_nl80211_set_operstate() 959 * fails. This will hit us when wpa_supplicant does not need to do 960 * IEEE 802.1X authentication 961 */ 962 if (drv->operstate == 1 && 963 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP && 964 !(ifi->ifi_flags & IFF_RUNNING)) 965 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 966 -1, IF_OPER_UP); 967 968 attrlen = len; 969 attr = (struct rtattr *) buf; 970 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 971 while (RTA_OK(attr, attrlen)) { 972 if (attr->rta_type == IFLA_IFNAME) { 973 wpa_driver_nl80211_event_link( 974 drv, 975 ((char *) attr) + rta_len, 976 attr->rta_len - rta_len, 0); 977 } else if (attr->rta_type == IFLA_MASTER) 978 brid = nla_get_u32((struct nlattr *) attr); 979 attr = RTA_NEXT(attr, attrlen); 980 } 981 982 if (ifi->ifi_family == AF_BRIDGE && brid) { 983 /* device has been added to bridge */ 984 if_indextoname(brid, namebuf); 985 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s", 986 brid, namebuf); 987 add_ifidx(drv, brid); 988 } 989 } 990 991 992 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx, 993 struct ifinfomsg *ifi, 994 u8 *buf, size_t len) 995 { 996 struct nl80211_global *global = ctx; 997 struct wpa_driver_nl80211_data *drv; 998 int attrlen, rta_len; 999 struct rtattr *attr; 1000 u32 brid = 0; 1001 1002 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len); 1003 if (!drv) { 1004 wpa_printf(MSG_DEBUG, "nl80211: Ignore dellink event for " 1005 "foreign ifindex %d", ifi->ifi_index); 1006 return; 1007 } 1008 1009 attrlen = len; 1010 attr = (struct rtattr *) buf; 1011 1012 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 1013 while (RTA_OK(attr, attrlen)) { 1014 if (attr->rta_type == IFLA_IFNAME) { 1015 wpa_driver_nl80211_event_link( 1016 drv, 1017 ((char *) attr) + rta_len, 1018 attr->rta_len - rta_len, 1); 1019 } else if (attr->rta_type == IFLA_MASTER) 1020 brid = nla_get_u32((struct nlattr *) attr); 1021 attr = RTA_NEXT(attr, attrlen); 1022 } 1023 1024 if (ifi->ifi_family == AF_BRIDGE && brid) { 1025 /* device has been removed from bridge */ 1026 char namebuf[IFNAMSIZ]; 1027 if_indextoname(brid, namebuf); 1028 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge " 1029 "%s", brid, namebuf); 1030 del_ifidx(drv, brid); 1031 } 1032 } 1033 1034 1035 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv, 1036 const u8 *frame, size_t len) 1037 { 1038 const struct ieee80211_mgmt *mgmt; 1039 union wpa_event_data event; 1040 1041 mgmt = (const struct ieee80211_mgmt *) frame; 1042 if (len < 24 + sizeof(mgmt->u.auth)) { 1043 wpa_printf(MSG_DEBUG, "nl80211: Too short association event " 1044 "frame"); 1045 return; 1046 } 1047 1048 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN); 1049 os_memset(&event, 0, sizeof(event)); 1050 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN); 1051 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg); 1052 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code); 1053 if (len > 24 + sizeof(mgmt->u.auth)) { 1054 event.auth.ies = mgmt->u.auth.variable; 1055 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth); 1056 } 1057 1058 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event); 1059 } 1060 1061 1062 static unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv) 1063 { 1064 struct nl_msg *msg; 1065 int ret; 1066 struct nl80211_bss_info_arg arg; 1067 1068 os_memset(&arg, 0, sizeof(arg)); 1069 msg = nlmsg_alloc(); 1070 if (!msg) 1071 goto nla_put_failure; 1072 1073 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 1074 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1075 1076 arg.drv = drv; 1077 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 1078 msg = NULL; 1079 if (ret == 0) { 1080 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the " 1081 "associated BSS from scan results: %u MHz", 1082 arg.assoc_freq); 1083 return arg.assoc_freq ? arg.assoc_freq : drv->assoc_freq; 1084 } 1085 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 1086 "(%s)", ret, strerror(-ret)); 1087 nla_put_failure: 1088 nlmsg_free(msg); 1089 return drv->assoc_freq; 1090 } 1091 1092 1093 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv, 1094 const u8 *frame, size_t len) 1095 { 1096 const struct ieee80211_mgmt *mgmt; 1097 union wpa_event_data event; 1098 u16 status; 1099 1100 mgmt = (const struct ieee80211_mgmt *) frame; 1101 if (len < 24 + sizeof(mgmt->u.assoc_resp)) { 1102 wpa_printf(MSG_DEBUG, "nl80211: Too short association event " 1103 "frame"); 1104 return; 1105 } 1106 1107 status = le_to_host16(mgmt->u.assoc_resp.status_code); 1108 if (status != WLAN_STATUS_SUCCESS) { 1109 os_memset(&event, 0, sizeof(event)); 1110 event.assoc_reject.bssid = mgmt->bssid; 1111 if (len > 24 + sizeof(mgmt->u.assoc_resp)) { 1112 event.assoc_reject.resp_ies = 1113 (u8 *) mgmt->u.assoc_resp.variable; 1114 event.assoc_reject.resp_ies_len = 1115 len - 24 - sizeof(mgmt->u.assoc_resp); 1116 } 1117 event.assoc_reject.status_code = status; 1118 1119 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event); 1120 return; 1121 } 1122 1123 drv->associated = 1; 1124 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN); 1125 1126 os_memset(&event, 0, sizeof(event)); 1127 if (len > 24 + sizeof(mgmt->u.assoc_resp)) { 1128 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable; 1129 event.assoc_info.resp_ies_len = 1130 len - 24 - sizeof(mgmt->u.assoc_resp); 1131 } 1132 1133 event.assoc_info.freq = drv->assoc_freq; 1134 1135 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); 1136 } 1137 1138 1139 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv, 1140 enum nl80211_commands cmd, struct nlattr *status, 1141 struct nlattr *addr, struct nlattr *req_ie, 1142 struct nlattr *resp_ie) 1143 { 1144 union wpa_event_data event; 1145 1146 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 1147 /* 1148 * Avoid reporting two association events that would confuse 1149 * the core code. 1150 */ 1151 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) " 1152 "when using userspace SME", cmd); 1153 return; 1154 } 1155 1156 os_memset(&event, 0, sizeof(event)); 1157 if (cmd == NL80211_CMD_CONNECT && 1158 nla_get_u16(status) != WLAN_STATUS_SUCCESS) { 1159 if (addr) 1160 event.assoc_reject.bssid = nla_data(addr); 1161 if (resp_ie) { 1162 event.assoc_reject.resp_ies = nla_data(resp_ie); 1163 event.assoc_reject.resp_ies_len = nla_len(resp_ie); 1164 } 1165 event.assoc_reject.status_code = nla_get_u16(status); 1166 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event); 1167 return; 1168 } 1169 1170 drv->associated = 1; 1171 if (addr) 1172 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN); 1173 1174 if (req_ie) { 1175 event.assoc_info.req_ies = nla_data(req_ie); 1176 event.assoc_info.req_ies_len = nla_len(req_ie); 1177 } 1178 if (resp_ie) { 1179 event.assoc_info.resp_ies = nla_data(resp_ie); 1180 event.assoc_info.resp_ies_len = nla_len(resp_ie); 1181 } 1182 1183 event.assoc_info.freq = nl80211_get_assoc_freq(drv); 1184 1185 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); 1186 } 1187 1188 1189 static void mlme_event_disconnect(struct wpa_driver_nl80211_data *drv, 1190 struct nlattr *reason, struct nlattr *addr, 1191 struct nlattr *by_ap) 1192 { 1193 union wpa_event_data data; 1194 1195 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 1196 /* 1197 * Avoid reporting two disassociation events that could 1198 * confuse the core code. 1199 */ 1200 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect " 1201 "event when using userspace SME"); 1202 return; 1203 } 1204 1205 drv->associated = 0; 1206 os_memset(&data, 0, sizeof(data)); 1207 if (reason) 1208 data.deauth_info.reason_code = nla_get_u16(reason); 1209 data.deauth_info.locally_generated = by_ap == NULL; 1210 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, &data); 1211 } 1212 1213 1214 static void mlme_event_ch_switch(struct wpa_driver_nl80211_data *drv, 1215 struct nlattr *freq, struct nlattr *type) 1216 { 1217 union wpa_event_data data; 1218 int ht_enabled = 1; 1219 int chan_offset = 0; 1220 1221 wpa_printf(MSG_DEBUG, "nl80211: Channel switch event"); 1222 1223 if (!freq || !type) 1224 return; 1225 1226 switch (nla_get_u32(type)) { 1227 case NL80211_CHAN_NO_HT: 1228 ht_enabled = 0; 1229 break; 1230 case NL80211_CHAN_HT20: 1231 break; 1232 case NL80211_CHAN_HT40PLUS: 1233 chan_offset = 1; 1234 break; 1235 case NL80211_CHAN_HT40MINUS: 1236 chan_offset = -1; 1237 break; 1238 } 1239 1240 data.ch_switch.freq = nla_get_u32(freq); 1241 data.ch_switch.ht_enabled = ht_enabled; 1242 data.ch_switch.ch_offset = chan_offset; 1243 1244 wpa_supplicant_event(drv->ctx, EVENT_CH_SWITCH, &data); 1245 } 1246 1247 1248 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv, 1249 enum nl80211_commands cmd, struct nlattr *addr) 1250 { 1251 union wpa_event_data event; 1252 enum wpa_event_type ev; 1253 1254 if (nla_len(addr) != ETH_ALEN) 1255 return; 1256 1257 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR, 1258 cmd, MAC2STR((u8 *) nla_data(addr))); 1259 1260 if (cmd == NL80211_CMD_AUTHENTICATE) 1261 ev = EVENT_AUTH_TIMED_OUT; 1262 else if (cmd == NL80211_CMD_ASSOCIATE) 1263 ev = EVENT_ASSOC_TIMED_OUT; 1264 else 1265 return; 1266 1267 os_memset(&event, 0, sizeof(event)); 1268 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN); 1269 wpa_supplicant_event(drv->ctx, ev, &event); 1270 } 1271 1272 1273 static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv, 1274 struct nlattr *freq, struct nlattr *sig, 1275 const u8 *frame, size_t len) 1276 { 1277 const struct ieee80211_mgmt *mgmt; 1278 union wpa_event_data event; 1279 u16 fc, stype; 1280 int ssi_signal = 0; 1281 1282 mgmt = (const struct ieee80211_mgmt *) frame; 1283 if (len < 24) { 1284 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame"); 1285 return; 1286 } 1287 1288 fc = le_to_host16(mgmt->frame_control); 1289 stype = WLAN_FC_GET_STYPE(fc); 1290 1291 if (sig) 1292 ssi_signal = (s32) nla_get_u32(sig); 1293 1294 os_memset(&event, 0, sizeof(event)); 1295 if (freq) { 1296 event.rx_action.freq = nla_get_u32(freq); 1297 drv->last_mgmt_freq = event.rx_action.freq; 1298 } 1299 if (stype == WLAN_FC_STYPE_ACTION) { 1300 event.rx_action.da = mgmt->da; 1301 event.rx_action.sa = mgmt->sa; 1302 event.rx_action.bssid = mgmt->bssid; 1303 event.rx_action.category = mgmt->u.action.category; 1304 event.rx_action.data = &mgmt->u.action.category + 1; 1305 event.rx_action.len = frame + len - event.rx_action.data; 1306 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event); 1307 } else { 1308 event.rx_mgmt.frame = frame; 1309 event.rx_mgmt.frame_len = len; 1310 event.rx_mgmt.ssi_signal = ssi_signal; 1311 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 1312 } 1313 } 1314 1315 1316 static void mlme_event_mgmt_tx_status(struct wpa_driver_nl80211_data *drv, 1317 struct nlattr *cookie, const u8 *frame, 1318 size_t len, struct nlattr *ack) 1319 { 1320 union wpa_event_data event; 1321 const struct ieee80211_hdr *hdr; 1322 u16 fc; 1323 1324 if (!is_ap_interface(drv->nlmode)) { 1325 u64 cookie_val; 1326 1327 if (!cookie) 1328 return; 1329 1330 cookie_val = nla_get_u64(cookie); 1331 wpa_printf(MSG_DEBUG, "nl80211: Action TX status:" 1332 " cookie=0%llx%s (ack=%d)", 1333 (long long unsigned int) cookie_val, 1334 cookie_val == drv->send_action_cookie ? 1335 " (match)" : " (unknown)", ack != NULL); 1336 if (cookie_val != drv->send_action_cookie) 1337 return; 1338 } 1339 1340 hdr = (const struct ieee80211_hdr *) frame; 1341 fc = le_to_host16(hdr->frame_control); 1342 1343 os_memset(&event, 0, sizeof(event)); 1344 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 1345 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 1346 event.tx_status.dst = hdr->addr1; 1347 event.tx_status.data = frame; 1348 event.tx_status.data_len = len; 1349 event.tx_status.ack = ack != NULL; 1350 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event); 1351 } 1352 1353 1354 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv, 1355 enum wpa_event_type type, 1356 const u8 *frame, size_t len) 1357 { 1358 const struct ieee80211_mgmt *mgmt; 1359 union wpa_event_data event; 1360 const u8 *bssid = NULL; 1361 u16 reason_code = 0; 1362 1363 mgmt = (const struct ieee80211_mgmt *) frame; 1364 if (len >= 24) { 1365 bssid = mgmt->bssid; 1366 1367 if (drv->associated != 0 && 1368 os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 && 1369 os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) { 1370 /* 1371 * We have presumably received this deauth as a 1372 * response to a clear_state_mismatch() outgoing 1373 * deauth. Don't let it take us offline! 1374 */ 1375 wpa_printf(MSG_DEBUG, "nl80211: Deauth received " 1376 "from Unknown BSSID " MACSTR " -- ignoring", 1377 MAC2STR(bssid)); 1378 return; 1379 } 1380 } 1381 1382 drv->associated = 0; 1383 os_memset(&event, 0, sizeof(event)); 1384 1385 /* Note: Same offset for Reason Code in both frame subtypes */ 1386 if (len >= 24 + sizeof(mgmt->u.deauth)) 1387 reason_code = le_to_host16(mgmt->u.deauth.reason_code); 1388 1389 if (type == EVENT_DISASSOC) { 1390 event.disassoc_info.locally_generated = 1391 !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN); 1392 event.disassoc_info.addr = bssid; 1393 event.disassoc_info.reason_code = reason_code; 1394 if (frame + len > mgmt->u.disassoc.variable) { 1395 event.disassoc_info.ie = mgmt->u.disassoc.variable; 1396 event.disassoc_info.ie_len = frame + len - 1397 mgmt->u.disassoc.variable; 1398 } 1399 } else { 1400 event.deauth_info.locally_generated = 1401 !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN); 1402 event.deauth_info.addr = bssid; 1403 event.deauth_info.reason_code = reason_code; 1404 if (frame + len > mgmt->u.deauth.variable) { 1405 event.deauth_info.ie = mgmt->u.deauth.variable; 1406 event.deauth_info.ie_len = frame + len - 1407 mgmt->u.deauth.variable; 1408 } 1409 } 1410 1411 wpa_supplicant_event(drv->ctx, type, &event); 1412 } 1413 1414 1415 static void mlme_event_unprot_disconnect(struct wpa_driver_nl80211_data *drv, 1416 enum wpa_event_type type, 1417 const u8 *frame, size_t len) 1418 { 1419 const struct ieee80211_mgmt *mgmt; 1420 union wpa_event_data event; 1421 u16 reason_code = 0; 1422 1423 if (len < 24) 1424 return; 1425 1426 mgmt = (const struct ieee80211_mgmt *) frame; 1427 1428 os_memset(&event, 0, sizeof(event)); 1429 /* Note: Same offset for Reason Code in both frame subtypes */ 1430 if (len >= 24 + sizeof(mgmt->u.deauth)) 1431 reason_code = le_to_host16(mgmt->u.deauth.reason_code); 1432 1433 if (type == EVENT_UNPROT_DISASSOC) { 1434 event.unprot_disassoc.sa = mgmt->sa; 1435 event.unprot_disassoc.da = mgmt->da; 1436 event.unprot_disassoc.reason_code = reason_code; 1437 } else { 1438 event.unprot_deauth.sa = mgmt->sa; 1439 event.unprot_deauth.da = mgmt->da; 1440 event.unprot_deauth.reason_code = reason_code; 1441 } 1442 1443 wpa_supplicant_event(drv->ctx, type, &event); 1444 } 1445 1446 1447 static void mlme_event(struct wpa_driver_nl80211_data *drv, 1448 enum nl80211_commands cmd, struct nlattr *frame, 1449 struct nlattr *addr, struct nlattr *timed_out, 1450 struct nlattr *freq, struct nlattr *ack, 1451 struct nlattr *cookie, struct nlattr *sig) 1452 { 1453 if (timed_out && addr) { 1454 mlme_timeout_event(drv, cmd, addr); 1455 return; 1456 } 1457 1458 if (frame == NULL) { 1459 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame " 1460 "data", cmd); 1461 return; 1462 } 1463 1464 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd); 1465 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame", 1466 nla_data(frame), nla_len(frame)); 1467 1468 switch (cmd) { 1469 case NL80211_CMD_AUTHENTICATE: 1470 mlme_event_auth(drv, nla_data(frame), nla_len(frame)); 1471 break; 1472 case NL80211_CMD_ASSOCIATE: 1473 mlme_event_assoc(drv, nla_data(frame), nla_len(frame)); 1474 break; 1475 case NL80211_CMD_DEAUTHENTICATE: 1476 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH, 1477 nla_data(frame), nla_len(frame)); 1478 break; 1479 case NL80211_CMD_DISASSOCIATE: 1480 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC, 1481 nla_data(frame), nla_len(frame)); 1482 break; 1483 case NL80211_CMD_FRAME: 1484 mlme_event_mgmt(drv, freq, sig, nla_data(frame), 1485 nla_len(frame)); 1486 break; 1487 case NL80211_CMD_FRAME_TX_STATUS: 1488 mlme_event_mgmt_tx_status(drv, cookie, nla_data(frame), 1489 nla_len(frame), ack); 1490 break; 1491 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 1492 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH, 1493 nla_data(frame), nla_len(frame)); 1494 break; 1495 case NL80211_CMD_UNPROT_DISASSOCIATE: 1496 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC, 1497 nla_data(frame), nla_len(frame)); 1498 break; 1499 default: 1500 break; 1501 } 1502 } 1503 1504 1505 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv, 1506 struct nlattr *tb[]) 1507 { 1508 union wpa_event_data data; 1509 1510 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure"); 1511 os_memset(&data, 0, sizeof(data)); 1512 if (tb[NL80211_ATTR_MAC]) { 1513 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address", 1514 nla_data(tb[NL80211_ATTR_MAC]), 1515 nla_len(tb[NL80211_ATTR_MAC])); 1516 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]); 1517 } 1518 if (tb[NL80211_ATTR_KEY_SEQ]) { 1519 wpa_hexdump(MSG_DEBUG, "nl80211: TSC", 1520 nla_data(tb[NL80211_ATTR_KEY_SEQ]), 1521 nla_len(tb[NL80211_ATTR_KEY_SEQ])); 1522 } 1523 if (tb[NL80211_ATTR_KEY_TYPE]) { 1524 enum nl80211_key_type key_type = 1525 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]); 1526 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type); 1527 if (key_type == NL80211_KEYTYPE_PAIRWISE) 1528 data.michael_mic_failure.unicast = 1; 1529 } else 1530 data.michael_mic_failure.unicast = 1; 1531 1532 if (tb[NL80211_ATTR_KEY_IDX]) { 1533 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]); 1534 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id); 1535 } 1536 1537 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data); 1538 } 1539 1540 1541 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv, 1542 struct nlattr *tb[]) 1543 { 1544 if (tb[NL80211_ATTR_MAC] == NULL) { 1545 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined " 1546 "event"); 1547 return; 1548 } 1549 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 1550 drv->associated = 1; 1551 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined", 1552 MAC2STR(drv->bssid)); 1553 1554 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL); 1555 } 1556 1557 1558 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv, 1559 int cancel_event, struct nlattr *tb[]) 1560 { 1561 unsigned int freq, chan_type, duration; 1562 union wpa_event_data data; 1563 u64 cookie; 1564 1565 if (tb[NL80211_ATTR_WIPHY_FREQ]) 1566 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]); 1567 else 1568 freq = 0; 1569 1570 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) 1571 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 1572 else 1573 chan_type = 0; 1574 1575 if (tb[NL80211_ATTR_DURATION]) 1576 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]); 1577 else 1578 duration = 0; 1579 1580 if (tb[NL80211_ATTR_COOKIE]) 1581 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 1582 else 1583 cookie = 0; 1584 1585 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d " 1586 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))", 1587 cancel_event, freq, chan_type, duration, 1588 (long long unsigned int) cookie, 1589 cookie == drv->remain_on_chan_cookie ? "match" : "unknown"); 1590 1591 if (cookie != drv->remain_on_chan_cookie) 1592 return; /* not for us */ 1593 1594 if (cancel_event) 1595 drv->pending_remain_on_chan = 0; 1596 1597 os_memset(&data, 0, sizeof(data)); 1598 data.remain_on_channel.freq = freq; 1599 data.remain_on_channel.duration = duration; 1600 wpa_supplicant_event(drv->ctx, cancel_event ? 1601 EVENT_CANCEL_REMAIN_ON_CHANNEL : 1602 EVENT_REMAIN_ON_CHANNEL, &data); 1603 } 1604 1605 1606 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted, 1607 struct nlattr *tb[]) 1608 { 1609 union wpa_event_data event; 1610 struct nlattr *nl; 1611 int rem; 1612 struct scan_info *info; 1613 #define MAX_REPORT_FREQS 50 1614 int freqs[MAX_REPORT_FREQS]; 1615 int num_freqs = 0; 1616 1617 if (drv->scan_for_auth) { 1618 drv->scan_for_auth = 0; 1619 wpa_printf(MSG_DEBUG, "nl80211: Scan results for missing " 1620 "cfg80211 BSS entry"); 1621 wpa_driver_nl80211_authenticate_retry(drv); 1622 return; 1623 } 1624 1625 os_memset(&event, 0, sizeof(event)); 1626 info = &event.scan_info; 1627 info->aborted = aborted; 1628 1629 if (tb[NL80211_ATTR_SCAN_SSIDS]) { 1630 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) { 1631 struct wpa_driver_scan_ssid *s = 1632 &info->ssids[info->num_ssids]; 1633 s->ssid = nla_data(nl); 1634 s->ssid_len = nla_len(nl); 1635 info->num_ssids++; 1636 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS) 1637 break; 1638 } 1639 } 1640 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) { 1641 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem) 1642 { 1643 freqs[num_freqs] = nla_get_u32(nl); 1644 num_freqs++; 1645 if (num_freqs == MAX_REPORT_FREQS - 1) 1646 break; 1647 } 1648 info->freqs = freqs; 1649 info->num_freqs = num_freqs; 1650 } 1651 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event); 1652 } 1653 1654 1655 static int get_link_signal(struct nl_msg *msg, void *arg) 1656 { 1657 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1658 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1659 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1]; 1660 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = { 1661 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 }, 1662 }; 1663 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1]; 1664 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = { 1665 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 }, 1666 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 }, 1667 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG }, 1668 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG }, 1669 }; 1670 struct wpa_signal_info *sig_change = arg; 1671 1672 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1673 genlmsg_attrlen(gnlh, 0), NULL); 1674 if (!tb[NL80211_ATTR_STA_INFO] || 1675 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX, 1676 tb[NL80211_ATTR_STA_INFO], policy)) 1677 return NL_SKIP; 1678 if (!sinfo[NL80211_STA_INFO_SIGNAL]) 1679 return NL_SKIP; 1680 1681 sig_change->current_signal = 1682 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]); 1683 1684 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) { 1685 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX, 1686 sinfo[NL80211_STA_INFO_TX_BITRATE], 1687 rate_policy)) { 1688 sig_change->current_txrate = 0; 1689 } else { 1690 if (rinfo[NL80211_RATE_INFO_BITRATE]) { 1691 sig_change->current_txrate = 1692 nla_get_u16(rinfo[ 1693 NL80211_RATE_INFO_BITRATE]) * 100; 1694 } 1695 } 1696 } 1697 1698 return NL_SKIP; 1699 } 1700 1701 1702 static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv, 1703 struct wpa_signal_info *sig) 1704 { 1705 struct nl_msg *msg; 1706 1707 sig->current_signal = -9999; 1708 sig->current_txrate = 0; 1709 1710 msg = nlmsg_alloc(); 1711 if (!msg) 1712 return -ENOMEM; 1713 1714 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 1715 1716 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1717 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 1718 1719 return send_and_recv_msgs(drv, msg, get_link_signal, sig); 1720 nla_put_failure: 1721 nlmsg_free(msg); 1722 return -ENOBUFS; 1723 } 1724 1725 1726 static int get_link_noise(struct nl_msg *msg, void *arg) 1727 { 1728 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1729 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1730 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 1731 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 1732 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 1733 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 1734 }; 1735 struct wpa_signal_info *sig_change = arg; 1736 1737 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1738 genlmsg_attrlen(gnlh, 0), NULL); 1739 1740 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 1741 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!"); 1742 return NL_SKIP; 1743 } 1744 1745 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 1746 tb[NL80211_ATTR_SURVEY_INFO], 1747 survey_policy)) { 1748 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested " 1749 "attributes!"); 1750 return NL_SKIP; 1751 } 1752 1753 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 1754 return NL_SKIP; 1755 1756 if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 1757 sig_change->frequency) 1758 return NL_SKIP; 1759 1760 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 1761 return NL_SKIP; 1762 1763 sig_change->current_noise = 1764 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 1765 1766 return NL_SKIP; 1767 } 1768 1769 1770 static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv, 1771 struct wpa_signal_info *sig_change) 1772 { 1773 struct nl_msg *msg; 1774 1775 sig_change->current_noise = 9999; 1776 sig_change->frequency = drv->assoc_freq; 1777 1778 msg = nlmsg_alloc(); 1779 if (!msg) 1780 return -ENOMEM; 1781 1782 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 1783 1784 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1785 1786 return send_and_recv_msgs(drv, msg, get_link_noise, sig_change); 1787 nla_put_failure: 1788 nlmsg_free(msg); 1789 return -ENOBUFS; 1790 } 1791 1792 1793 static int get_noise_for_scan_results(struct nl_msg *msg, void *arg) 1794 { 1795 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1796 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1797 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 1798 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 1799 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 1800 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 1801 }; 1802 struct wpa_scan_results *scan_results = arg; 1803 struct wpa_scan_res *scan_res; 1804 size_t i; 1805 1806 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1807 genlmsg_attrlen(gnlh, 0), NULL); 1808 1809 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 1810 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing"); 1811 return NL_SKIP; 1812 } 1813 1814 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 1815 tb[NL80211_ATTR_SURVEY_INFO], 1816 survey_policy)) { 1817 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested " 1818 "attributes"); 1819 return NL_SKIP; 1820 } 1821 1822 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 1823 return NL_SKIP; 1824 1825 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 1826 return NL_SKIP; 1827 1828 for (i = 0; i < scan_results->num; ++i) { 1829 scan_res = scan_results->res[i]; 1830 if (!scan_res) 1831 continue; 1832 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 1833 scan_res->freq) 1834 continue; 1835 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID)) 1836 continue; 1837 scan_res->noise = (s8) 1838 nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 1839 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID; 1840 } 1841 1842 return NL_SKIP; 1843 } 1844 1845 1846 static int nl80211_get_noise_for_scan_results( 1847 struct wpa_driver_nl80211_data *drv, 1848 struct wpa_scan_results *scan_res) 1849 { 1850 struct nl_msg *msg; 1851 1852 msg = nlmsg_alloc(); 1853 if (!msg) 1854 return -ENOMEM; 1855 1856 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 1857 1858 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1859 1860 return send_and_recv_msgs(drv, msg, get_noise_for_scan_results, 1861 scan_res); 1862 nla_put_failure: 1863 nlmsg_free(msg); 1864 return -ENOBUFS; 1865 } 1866 1867 1868 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv, 1869 struct nlattr *tb[]) 1870 { 1871 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 1872 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 1873 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 }, 1874 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 1875 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 }, 1876 }; 1877 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1]; 1878 enum nl80211_cqm_rssi_threshold_event event; 1879 union wpa_event_data ed; 1880 struct wpa_signal_info sig; 1881 int res; 1882 1883 if (tb[NL80211_ATTR_CQM] == NULL || 1884 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM], 1885 cqm_policy)) { 1886 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event"); 1887 return; 1888 } 1889 1890 os_memset(&ed, 0, sizeof(ed)); 1891 1892 if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) { 1893 if (!tb[NL80211_ATTR_MAC]) 1894 return; 1895 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]), 1896 ETH_ALEN); 1897 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed); 1898 return; 1899 } 1900 1901 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL) 1902 return; 1903 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]); 1904 1905 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) { 1906 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 1907 "event: RSSI high"); 1908 ed.signal_change.above_threshold = 1; 1909 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) { 1910 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 1911 "event: RSSI low"); 1912 ed.signal_change.above_threshold = 0; 1913 } else 1914 return; 1915 1916 res = nl80211_get_link_signal(drv, &sig); 1917 if (res == 0) { 1918 ed.signal_change.current_signal = sig.current_signal; 1919 ed.signal_change.current_txrate = sig.current_txrate; 1920 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm txrate: %d", 1921 sig.current_signal, sig.current_txrate); 1922 } 1923 1924 res = nl80211_get_link_noise(drv, &sig); 1925 if (res == 0) { 1926 ed.signal_change.current_noise = sig.current_noise; 1927 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm", 1928 sig.current_noise); 1929 } 1930 1931 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed); 1932 } 1933 1934 1935 static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv, 1936 struct nlattr **tb) 1937 { 1938 u8 *addr; 1939 union wpa_event_data data; 1940 1941 if (tb[NL80211_ATTR_MAC] == NULL) 1942 return; 1943 addr = nla_data(tb[NL80211_ATTR_MAC]); 1944 wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr)); 1945 1946 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { 1947 u8 *ies = NULL; 1948 size_t ies_len = 0; 1949 if (tb[NL80211_ATTR_IE]) { 1950 ies = nla_data(tb[NL80211_ATTR_IE]); 1951 ies_len = nla_len(tb[NL80211_ATTR_IE]); 1952 } 1953 wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len); 1954 drv_event_assoc(drv->ctx, addr, ies, ies_len, 0); 1955 return; 1956 } 1957 1958 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 1959 return; 1960 1961 os_memset(&data, 0, sizeof(data)); 1962 os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN); 1963 wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data); 1964 } 1965 1966 1967 static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv, 1968 struct nlattr **tb) 1969 { 1970 u8 *addr; 1971 union wpa_event_data data; 1972 1973 if (tb[NL80211_ATTR_MAC] == NULL) 1974 return; 1975 addr = nla_data(tb[NL80211_ATTR_MAC]); 1976 wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR, 1977 MAC2STR(addr)); 1978 1979 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { 1980 drv_event_disassoc(drv->ctx, addr); 1981 return; 1982 } 1983 1984 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 1985 return; 1986 1987 os_memset(&data, 0, sizeof(data)); 1988 os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN); 1989 wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data); 1990 } 1991 1992 1993 static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv, 1994 struct nlattr **tb) 1995 { 1996 struct nlattr *rekey_info[NUM_NL80211_REKEY_DATA]; 1997 static struct nla_policy rekey_policy[NUM_NL80211_REKEY_DATA] = { 1998 [NL80211_REKEY_DATA_KEK] = { 1999 .minlen = NL80211_KEK_LEN, 2000 .maxlen = NL80211_KEK_LEN, 2001 }, 2002 [NL80211_REKEY_DATA_KCK] = { 2003 .minlen = NL80211_KCK_LEN, 2004 .maxlen = NL80211_KCK_LEN, 2005 }, 2006 [NL80211_REKEY_DATA_REPLAY_CTR] = { 2007 .minlen = NL80211_REPLAY_CTR_LEN, 2008 .maxlen = NL80211_REPLAY_CTR_LEN, 2009 }, 2010 }; 2011 union wpa_event_data data; 2012 2013 if (!tb[NL80211_ATTR_MAC]) 2014 return; 2015 if (!tb[NL80211_ATTR_REKEY_DATA]) 2016 return; 2017 if (nla_parse_nested(rekey_info, MAX_NL80211_REKEY_DATA, 2018 tb[NL80211_ATTR_REKEY_DATA], rekey_policy)) 2019 return; 2020 if (!rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]) 2021 return; 2022 2023 os_memset(&data, 0, sizeof(data)); 2024 data.driver_gtk_rekey.bssid = nla_data(tb[NL80211_ATTR_MAC]); 2025 wpa_printf(MSG_DEBUG, "nl80211: Rekey offload event for BSSID " MACSTR, 2026 MAC2STR(data.driver_gtk_rekey.bssid)); 2027 data.driver_gtk_rekey.replay_ctr = 2028 nla_data(rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]); 2029 wpa_hexdump(MSG_DEBUG, "nl80211: Rekey offload - Replay Counter", 2030 data.driver_gtk_rekey.replay_ctr, NL80211_REPLAY_CTR_LEN); 2031 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_GTK_REKEY, &data); 2032 } 2033 2034 2035 static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv, 2036 struct nlattr **tb) 2037 { 2038 struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE]; 2039 static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = { 2040 [NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 }, 2041 [NL80211_PMKSA_CANDIDATE_BSSID] = { 2042 .minlen = ETH_ALEN, 2043 .maxlen = ETH_ALEN, 2044 }, 2045 [NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG }, 2046 }; 2047 union wpa_event_data data; 2048 2049 if (!tb[NL80211_ATTR_PMKSA_CANDIDATE]) 2050 return; 2051 if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE, 2052 tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy)) 2053 return; 2054 if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] || 2055 !cand[NL80211_PMKSA_CANDIDATE_BSSID]) 2056 return; 2057 2058 os_memset(&data, 0, sizeof(data)); 2059 os_memcpy(data.pmkid_candidate.bssid, 2060 nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN); 2061 data.pmkid_candidate.index = 2062 nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]); 2063 data.pmkid_candidate.preauth = 2064 cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL; 2065 wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data); 2066 } 2067 2068 2069 static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv, 2070 struct nlattr **tb) 2071 { 2072 union wpa_event_data data; 2073 2074 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_ACK]) 2075 return; 2076 2077 os_memset(&data, 0, sizeof(data)); 2078 os_memcpy(data.client_poll.addr, 2079 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2080 2081 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_CLIENT_POLL_OK, &data); 2082 } 2083 2084 2085 static void nl80211_spurious_frame(struct i802_bss *bss, struct nlattr **tb, 2086 int wds) 2087 { 2088 struct wpa_driver_nl80211_data *drv = bss->drv; 2089 union wpa_event_data event; 2090 2091 if (!tb[NL80211_ATTR_MAC]) 2092 return; 2093 2094 os_memset(&event, 0, sizeof(event)); 2095 event.rx_from_unknown.bssid = bss->addr; 2096 event.rx_from_unknown.addr = nla_data(tb[NL80211_ATTR_MAC]); 2097 event.rx_from_unknown.wds = wds; 2098 2099 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 2100 } 2101 2102 2103 static void do_process_drv_event(struct wpa_driver_nl80211_data *drv, 2104 int cmd, struct nlattr **tb) 2105 { 2106 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED && 2107 (cmd == NL80211_CMD_NEW_SCAN_RESULTS || 2108 cmd == NL80211_CMD_SCAN_ABORTED)) { 2109 wpa_driver_nl80211_set_mode(&drv->first_bss, 2110 drv->ap_scan_as_station); 2111 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 2112 } 2113 2114 switch (cmd) { 2115 case NL80211_CMD_TRIGGER_SCAN: 2116 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger"); 2117 break; 2118 case NL80211_CMD_START_SCHED_SCAN: 2119 wpa_printf(MSG_DEBUG, "nl80211: Sched scan started"); 2120 break; 2121 case NL80211_CMD_SCHED_SCAN_STOPPED: 2122 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stopped"); 2123 wpa_supplicant_event(drv->ctx, EVENT_SCHED_SCAN_STOPPED, NULL); 2124 break; 2125 case NL80211_CMD_NEW_SCAN_RESULTS: 2126 wpa_printf(MSG_DEBUG, "nl80211: New scan results available"); 2127 drv->scan_complete_events = 1; 2128 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 2129 drv->ctx); 2130 send_scan_event(drv, 0, tb); 2131 break; 2132 case NL80211_CMD_SCHED_SCAN_RESULTS: 2133 wpa_printf(MSG_DEBUG, 2134 "nl80211: New sched scan results available"); 2135 send_scan_event(drv, 0, tb); 2136 break; 2137 case NL80211_CMD_SCAN_ABORTED: 2138 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted"); 2139 /* 2140 * Need to indicate that scan results are available in order 2141 * not to make wpa_supplicant stop its scanning. 2142 */ 2143 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 2144 drv->ctx); 2145 send_scan_event(drv, 1, tb); 2146 break; 2147 case NL80211_CMD_AUTHENTICATE: 2148 case NL80211_CMD_ASSOCIATE: 2149 case NL80211_CMD_DEAUTHENTICATE: 2150 case NL80211_CMD_DISASSOCIATE: 2151 case NL80211_CMD_FRAME_TX_STATUS: 2152 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 2153 case NL80211_CMD_UNPROT_DISASSOCIATE: 2154 mlme_event(drv, cmd, tb[NL80211_ATTR_FRAME], 2155 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 2156 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 2157 tb[NL80211_ATTR_COOKIE], 2158 tb[NL80211_ATTR_RX_SIGNAL_DBM]); 2159 break; 2160 case NL80211_CMD_CONNECT: 2161 case NL80211_CMD_ROAM: 2162 mlme_event_connect(drv, cmd, 2163 tb[NL80211_ATTR_STATUS_CODE], 2164 tb[NL80211_ATTR_MAC], 2165 tb[NL80211_ATTR_REQ_IE], 2166 tb[NL80211_ATTR_RESP_IE]); 2167 break; 2168 case NL80211_CMD_CH_SWITCH_NOTIFY: 2169 mlme_event_ch_switch(drv, tb[NL80211_ATTR_WIPHY_FREQ], 2170 tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 2171 break; 2172 case NL80211_CMD_DISCONNECT: 2173 mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE], 2174 tb[NL80211_ATTR_MAC], 2175 tb[NL80211_ATTR_DISCONNECTED_BY_AP]); 2176 break; 2177 case NL80211_CMD_MICHAEL_MIC_FAILURE: 2178 mlme_event_michael_mic_failure(drv, tb); 2179 break; 2180 case NL80211_CMD_JOIN_IBSS: 2181 mlme_event_join_ibss(drv, tb); 2182 break; 2183 case NL80211_CMD_REMAIN_ON_CHANNEL: 2184 mlme_event_remain_on_channel(drv, 0, tb); 2185 break; 2186 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL: 2187 mlme_event_remain_on_channel(drv, 1, tb); 2188 break; 2189 case NL80211_CMD_NOTIFY_CQM: 2190 nl80211_cqm_event(drv, tb); 2191 break; 2192 case NL80211_CMD_REG_CHANGE: 2193 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change"); 2194 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 2195 NULL); 2196 break; 2197 case NL80211_CMD_REG_BEACON_HINT: 2198 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint"); 2199 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 2200 NULL); 2201 break; 2202 case NL80211_CMD_NEW_STATION: 2203 nl80211_new_station_event(drv, tb); 2204 break; 2205 case NL80211_CMD_DEL_STATION: 2206 nl80211_del_station_event(drv, tb); 2207 break; 2208 case NL80211_CMD_SET_REKEY_OFFLOAD: 2209 nl80211_rekey_offload_event(drv, tb); 2210 break; 2211 case NL80211_CMD_PMKSA_CANDIDATE: 2212 nl80211_pmksa_candidate_event(drv, tb); 2213 break; 2214 case NL80211_CMD_PROBE_CLIENT: 2215 nl80211_client_probe_event(drv, tb); 2216 break; 2217 default: 2218 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event " 2219 "(cmd=%d)", cmd); 2220 break; 2221 } 2222 } 2223 2224 2225 static int process_drv_event(struct nl_msg *msg, void *arg) 2226 { 2227 struct wpa_driver_nl80211_data *drv = arg; 2228 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2229 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2230 2231 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2232 genlmsg_attrlen(gnlh, 0), NULL); 2233 2234 if (tb[NL80211_ATTR_IFINDEX]) { 2235 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2236 if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) { 2237 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)" 2238 " for foreign interface (ifindex %d)", 2239 gnlh->cmd, ifindex); 2240 return NL_SKIP; 2241 } 2242 } 2243 2244 do_process_drv_event(drv, gnlh->cmd, tb); 2245 return NL_SKIP; 2246 } 2247 2248 2249 static int process_global_event(struct nl_msg *msg, void *arg) 2250 { 2251 struct nl80211_global *global = arg; 2252 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2253 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2254 struct wpa_driver_nl80211_data *drv, *tmp; 2255 int ifidx = -1; 2256 2257 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2258 genlmsg_attrlen(gnlh, 0), NULL); 2259 2260 if (tb[NL80211_ATTR_IFINDEX]) 2261 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2262 2263 dl_list_for_each_safe(drv, tmp, &global->interfaces, 2264 struct wpa_driver_nl80211_data, list) { 2265 if (ifidx == -1 || ifidx == drv->ifindex || 2266 have_ifidx(drv, ifidx)) 2267 do_process_drv_event(drv, gnlh->cmd, tb); 2268 } 2269 2270 return NL_SKIP; 2271 } 2272 2273 2274 static int process_bss_event(struct nl_msg *msg, void *arg) 2275 { 2276 struct i802_bss *bss = arg; 2277 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2278 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2279 2280 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2281 genlmsg_attrlen(gnlh, 0), NULL); 2282 2283 switch (gnlh->cmd) { 2284 case NL80211_CMD_FRAME: 2285 case NL80211_CMD_FRAME_TX_STATUS: 2286 mlme_event(bss->drv, gnlh->cmd, tb[NL80211_ATTR_FRAME], 2287 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 2288 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 2289 tb[NL80211_ATTR_COOKIE], 2290 tb[NL80211_ATTR_RX_SIGNAL_DBM]); 2291 break; 2292 case NL80211_CMD_UNEXPECTED_FRAME: 2293 nl80211_spurious_frame(bss, tb, 0); 2294 break; 2295 case NL80211_CMD_UNEXPECTED_4ADDR_FRAME: 2296 nl80211_spurious_frame(bss, tb, 1); 2297 break; 2298 default: 2299 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event " 2300 "(cmd=%d)", gnlh->cmd); 2301 break; 2302 } 2303 2304 return NL_SKIP; 2305 } 2306 2307 2308 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx, 2309 void *handle) 2310 { 2311 struct nl_cb *cb = eloop_ctx; 2312 2313 wpa_printf(MSG_DEBUG, "nl80211: Event message available"); 2314 2315 nl_recvmsgs(handle, cb); 2316 } 2317 2318 2319 /** 2320 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain 2321 * @priv: driver_nl80211 private data 2322 * @alpha2_arg: country to which to switch to 2323 * Returns: 0 on success, -1 on failure 2324 * 2325 * This asks nl80211 to set the regulatory domain for given 2326 * country ISO / IEC alpha2. 2327 */ 2328 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg) 2329 { 2330 struct i802_bss *bss = priv; 2331 struct wpa_driver_nl80211_data *drv = bss->drv; 2332 char alpha2[3]; 2333 struct nl_msg *msg; 2334 2335 msg = nlmsg_alloc(); 2336 if (!msg) 2337 return -ENOMEM; 2338 2339 alpha2[0] = alpha2_arg[0]; 2340 alpha2[1] = alpha2_arg[1]; 2341 alpha2[2] = '\0'; 2342 2343 nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG); 2344 2345 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2); 2346 if (send_and_recv_msgs(drv, msg, NULL, NULL)) 2347 return -EINVAL; 2348 return 0; 2349 nla_put_failure: 2350 nlmsg_free(msg); 2351 return -EINVAL; 2352 } 2353 2354 2355 struct wiphy_info_data { 2356 struct wpa_driver_capa *capa; 2357 2358 unsigned int error:1; 2359 unsigned int device_ap_sme:1; 2360 unsigned int poll_command_supported:1; 2361 unsigned int data_tx_status:1; 2362 unsigned int monitor_supported:1; 2363 }; 2364 2365 2366 static unsigned int probe_resp_offload_support(int supp_protocols) 2367 { 2368 unsigned int prot = 0; 2369 2370 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS) 2371 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS; 2372 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2) 2373 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2; 2374 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P) 2375 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P; 2376 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U) 2377 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING; 2378 2379 return prot; 2380 } 2381 2382 2383 static int wiphy_info_handler(struct nl_msg *msg, void *arg) 2384 { 2385 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2386 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2387 struct wiphy_info_data *info = arg; 2388 int p2p_go_supported = 0, p2p_client_supported = 0; 2389 int p2p_concurrent = 0, p2p_multichan_concurrent = 0; 2390 int auth_supported = 0, connect_supported = 0; 2391 struct wpa_driver_capa *capa = info->capa; 2392 static struct nla_policy 2393 iface_combination_policy[NUM_NL80211_IFACE_COMB] = { 2394 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED }, 2395 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 }, 2396 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG }, 2397 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 }, 2398 }, 2399 iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = { 2400 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED }, 2401 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 }, 2402 }; 2403 2404 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2405 genlmsg_attrlen(gnlh, 0), NULL); 2406 2407 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]) 2408 capa->max_scan_ssids = 2409 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]); 2410 2411 if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]) 2412 capa->max_sched_scan_ssids = 2413 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]); 2414 2415 if (tb[NL80211_ATTR_MAX_MATCH_SETS]) 2416 capa->max_match_sets = 2417 nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]); 2418 2419 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) { 2420 struct nlattr *nl_mode; 2421 int i; 2422 nla_for_each_nested(nl_mode, 2423 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) { 2424 switch (nla_type(nl_mode)) { 2425 case NL80211_IFTYPE_AP: 2426 capa->flags |= WPA_DRIVER_FLAGS_AP; 2427 break; 2428 case NL80211_IFTYPE_P2P_GO: 2429 p2p_go_supported = 1; 2430 break; 2431 case NL80211_IFTYPE_P2P_CLIENT: 2432 p2p_client_supported = 1; 2433 break; 2434 case NL80211_IFTYPE_MONITOR: 2435 info->monitor_supported = 1; 2436 break; 2437 } 2438 } 2439 } 2440 2441 if (tb[NL80211_ATTR_INTERFACE_COMBINATIONS]) { 2442 struct nlattr *nl_combi; 2443 int rem_combi; 2444 2445 nla_for_each_nested(nl_combi, 2446 tb[NL80211_ATTR_INTERFACE_COMBINATIONS], 2447 rem_combi) { 2448 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB]; 2449 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT]; 2450 struct nlattr *nl_limit, *nl_mode; 2451 int err, rem_limit, rem_mode; 2452 int combination_has_p2p = 0, combination_has_mgd = 0; 2453 2454 err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB, 2455 nl_combi, 2456 iface_combination_policy); 2457 if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] || 2458 !tb_comb[NL80211_IFACE_COMB_MAXNUM] || 2459 !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) 2460 goto broken_combination; 2461 2462 nla_for_each_nested(nl_limit, 2463 tb_comb[NL80211_IFACE_COMB_LIMITS], 2464 rem_limit) { 2465 err = nla_parse_nested(tb_limit, 2466 MAX_NL80211_IFACE_LIMIT, 2467 nl_limit, 2468 iface_limit_policy); 2469 if (err || 2470 !tb_limit[NL80211_IFACE_LIMIT_TYPES]) 2471 goto broken_combination; 2472 2473 nla_for_each_nested( 2474 nl_mode, 2475 tb_limit[NL80211_IFACE_LIMIT_TYPES], 2476 rem_mode) { 2477 int ift = nla_type(nl_mode); 2478 if (ift == NL80211_IFTYPE_P2P_GO || 2479 ift == NL80211_IFTYPE_P2P_CLIENT) 2480 combination_has_p2p = 1; 2481 if (ift == NL80211_IFTYPE_STATION) 2482 combination_has_mgd = 1; 2483 } 2484 if (combination_has_p2p && combination_has_mgd) 2485 break; 2486 } 2487 2488 if (combination_has_p2p && combination_has_mgd) { 2489 p2p_concurrent = 1; 2490 if (nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) > 1) 2491 p2p_multichan_concurrent = 1; 2492 break; 2493 } 2494 2495 broken_combination: 2496 ; 2497 } 2498 } 2499 2500 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) { 2501 struct nlattr *nl_cmd; 2502 int i; 2503 2504 nla_for_each_nested(nl_cmd, 2505 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) { 2506 switch (nla_get_u32(nl_cmd)) { 2507 case NL80211_CMD_AUTHENTICATE: 2508 auth_supported = 1; 2509 break; 2510 case NL80211_CMD_CONNECT: 2511 connect_supported = 1; 2512 break; 2513 case NL80211_CMD_START_SCHED_SCAN: 2514 capa->sched_scan_supported = 1; 2515 break; 2516 case NL80211_CMD_PROBE_CLIENT: 2517 info->poll_command_supported = 1; 2518 break; 2519 } 2520 } 2521 } 2522 2523 if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) { 2524 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based " 2525 "off-channel TX"); 2526 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX; 2527 } 2528 2529 if (tb[NL80211_ATTR_ROAM_SUPPORT]) { 2530 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming"); 2531 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION; 2532 } 2533 2534 /* default to 5000 since early versions of mac80211 don't set it */ 2535 capa->max_remain_on_chan = 5000; 2536 2537 if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD]) 2538 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD; 2539 2540 if (tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]) 2541 capa->max_remain_on_chan = 2542 nla_get_u32(tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]); 2543 2544 if (auth_supported) 2545 capa->flags |= WPA_DRIVER_FLAGS_SME; 2546 else if (!connect_supported) { 2547 wpa_printf(MSG_INFO, "nl80211: Driver does not support " 2548 "authentication/association or connect commands"); 2549 info->error = 1; 2550 } 2551 2552 if (p2p_go_supported && p2p_client_supported) 2553 capa->flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE; 2554 if (p2p_concurrent) { 2555 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 2556 "interface (driver advertised support)"); 2557 capa->flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 2558 capa->flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 2559 2560 if (p2p_multichan_concurrent) { 2561 wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel " 2562 "concurrent (driver advertised support)"); 2563 capa->flags |= 2564 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT; 2565 } 2566 } 2567 2568 if (tb[NL80211_ATTR_TDLS_SUPPORT]) { 2569 wpa_printf(MSG_DEBUG, "nl80211: TDLS supported"); 2570 capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT; 2571 2572 if (tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]) { 2573 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup"); 2574 capa->flags |= 2575 WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP; 2576 } 2577 } 2578 2579 if (tb[NL80211_ATTR_DEVICE_AP_SME]) 2580 info->device_ap_sme = 1; 2581 2582 if (tb[NL80211_ATTR_FEATURE_FLAGS]) { 2583 u32 flags = nla_get_u32(tb[NL80211_ATTR_FEATURE_FLAGS]); 2584 2585 if (flags & NL80211_FEATURE_SK_TX_STATUS) 2586 info->data_tx_status = 1; 2587 2588 if (flags & NL80211_FEATURE_INACTIVITY_TIMER) 2589 capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER; 2590 } 2591 2592 if (tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]) { 2593 int protocols = 2594 nla_get_u32(tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]); 2595 wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response " 2596 "offload in AP mode"); 2597 capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD; 2598 capa->probe_resp_offloads = 2599 probe_resp_offload_support(protocols); 2600 } 2601 2602 return NL_SKIP; 2603 } 2604 2605 2606 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv, 2607 struct wiphy_info_data *info) 2608 { 2609 struct nl_msg *msg; 2610 2611 os_memset(info, 0, sizeof(*info)); 2612 info->capa = &drv->capa; 2613 2614 msg = nlmsg_alloc(); 2615 if (!msg) 2616 return -1; 2617 2618 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 2619 2620 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex); 2621 2622 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0) 2623 return 0; 2624 msg = NULL; 2625 nla_put_failure: 2626 nlmsg_free(msg); 2627 return -1; 2628 } 2629 2630 2631 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv) 2632 { 2633 struct wiphy_info_data info; 2634 if (wpa_driver_nl80211_get_info(drv, &info)) 2635 return -1; 2636 2637 if (info.error) 2638 return -1; 2639 2640 drv->has_capability = 1; 2641 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */ 2642 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA | 2643 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK | 2644 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | 2645 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK; 2646 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 | 2647 WPA_DRIVER_CAPA_ENC_WEP104 | 2648 WPA_DRIVER_CAPA_ENC_TKIP | 2649 WPA_DRIVER_CAPA_ENC_CCMP; 2650 drv->capa.auth = WPA_DRIVER_AUTH_OPEN | 2651 WPA_DRIVER_AUTH_SHARED | 2652 WPA_DRIVER_AUTH_LEAP; 2653 2654 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES; 2655 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE; 2656 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 2657 2658 if (!info.device_ap_sme) { 2659 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS; 2660 2661 /* 2662 * No AP SME is currently assumed to also indicate no AP MLME 2663 * in the driver/firmware. 2664 */ 2665 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME; 2666 } 2667 2668 drv->device_ap_sme = info.device_ap_sme; 2669 drv->poll_command_supported = info.poll_command_supported; 2670 drv->data_tx_status = info.data_tx_status; 2671 2672 #ifdef ANDROID_P2P 2673 if(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) { 2674 /* Driver is new enough to support monitorless mode*/ 2675 wpa_printf(MSG_DEBUG, "nl80211: Driver is new " 2676 "enough to support monitor-less mode"); 2677 drv->use_monitor = 0; 2678 } 2679 #else 2680 /* 2681 * If poll command and tx status are supported, mac80211 is new enough 2682 * to have everything we need to not need monitor interfaces. 2683 */ 2684 drv->use_monitor = !info.poll_command_supported || !info.data_tx_status; 2685 #endif 2686 2687 if (drv->device_ap_sme && drv->use_monitor) { 2688 /* 2689 * Non-mac80211 drivers may not support monitor interface. 2690 * Make sure we do not get stuck with incorrect capability here 2691 * by explicitly testing this. 2692 */ 2693 if (!info.monitor_supported) { 2694 wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor " 2695 "with device_ap_sme since no monitor mode " 2696 "support detected"); 2697 drv->use_monitor = 0; 2698 } 2699 } 2700 2701 /* 2702 * If we aren't going to use monitor interfaces, but the 2703 * driver doesn't support data TX status, we won't get TX 2704 * status for EAPOL frames. 2705 */ 2706 if (!drv->use_monitor && !info.data_tx_status) 2707 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 2708 2709 return 0; 2710 } 2711 2712 2713 #ifdef ANDROID 2714 static int android_genl_ctrl_resolve(struct nl_handle *handle, 2715 const char *name) 2716 { 2717 /* 2718 * Android ICS has very minimal genl_ctrl_resolve() implementation, so 2719 * need to work around that. 2720 */ 2721 struct nl_cache *cache = NULL; 2722 struct genl_family *nl80211 = NULL; 2723 int id = -1; 2724 2725 if (genl_ctrl_alloc_cache(handle, &cache) < 0) { 2726 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic " 2727 "netlink cache"); 2728 goto fail; 2729 } 2730 2731 nl80211 = genl_ctrl_search_by_name(cache, name); 2732 if (nl80211 == NULL) 2733 goto fail; 2734 2735 id = genl_family_get_id(nl80211); 2736 2737 fail: 2738 if (nl80211) 2739 genl_family_put(nl80211); 2740 if (cache) 2741 nl_cache_free(cache); 2742 2743 return id; 2744 } 2745 #define genl_ctrl_resolve android_genl_ctrl_resolve 2746 #endif /* ANDROID */ 2747 2748 2749 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global) 2750 { 2751 int ret; 2752 2753 global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 2754 if (global->nl_cb == NULL) { 2755 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 2756 "callbacks"); 2757 return -1; 2758 } 2759 2760 global->nl = nl_create_handle(global->nl_cb, "nl"); 2761 if (global->nl == NULL) 2762 goto err; 2763 2764 global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211"); 2765 if (global->nl80211_id < 0) { 2766 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not " 2767 "found"); 2768 goto err; 2769 } 2770 2771 global->nl_event = nl_create_handle(global->nl_cb, "event"); 2772 if (global->nl_event == NULL) 2773 goto err; 2774 2775 ret = nl_get_multicast_id(global, "nl80211", "scan"); 2776 if (ret >= 0) 2777 ret = nl_socket_add_membership(global->nl_event, ret); 2778 if (ret < 0) { 2779 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 2780 "membership for scan events: %d (%s)", 2781 ret, strerror(-ret)); 2782 goto err; 2783 } 2784 2785 ret = nl_get_multicast_id(global, "nl80211", "mlme"); 2786 if (ret >= 0) 2787 ret = nl_socket_add_membership(global->nl_event, ret); 2788 if (ret < 0) { 2789 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 2790 "membership for mlme events: %d (%s)", 2791 ret, strerror(-ret)); 2792 goto err; 2793 } 2794 2795 ret = nl_get_multicast_id(global, "nl80211", "regulatory"); 2796 if (ret >= 0) 2797 ret = nl_socket_add_membership(global->nl_event, ret); 2798 if (ret < 0) { 2799 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast " 2800 "membership for regulatory events: %d (%s)", 2801 ret, strerror(-ret)); 2802 /* Continue without regulatory events */ 2803 } 2804 2805 nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 2806 no_seq_check, NULL); 2807 nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 2808 process_global_event, global); 2809 2810 eloop_register_read_sock(nl_socket_get_fd(global->nl_event), 2811 wpa_driver_nl80211_event_receive, 2812 global->nl_cb, global->nl_event); 2813 2814 return 0; 2815 2816 err: 2817 nl_destroy_handles(&global->nl_event); 2818 nl_destroy_handles(&global->nl); 2819 nl_cb_put(global->nl_cb); 2820 global->nl_cb = NULL; 2821 return -1; 2822 } 2823 2824 2825 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv) 2826 { 2827 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 2828 if (!drv->nl_cb) { 2829 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct"); 2830 return -1; 2831 } 2832 2833 nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 2834 no_seq_check, NULL); 2835 nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 2836 process_drv_event, drv); 2837 2838 return 0; 2839 } 2840 2841 2842 static void wpa_driver_nl80211_rfkill_blocked(void *ctx) 2843 { 2844 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked"); 2845 /* 2846 * This may be for any interface; use ifdown event to disable 2847 * interface. 2848 */ 2849 } 2850 2851 2852 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx) 2853 { 2854 struct wpa_driver_nl80211_data *drv = ctx; 2855 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked"); 2856 if (linux_set_iface_flags(drv->global->ioctl_sock, 2857 drv->first_bss.ifname, 1)) { 2858 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP " 2859 "after rfkill unblock"); 2860 return; 2861 } 2862 /* rtnetlink ifup handler will report interface as enabled */ 2863 } 2864 2865 2866 static void nl80211_get_phy_name(struct wpa_driver_nl80211_data *drv) 2867 { 2868 /* Find phy (radio) to which this interface belongs */ 2869 char buf[90], *pos; 2870 int f, rv; 2871 2872 drv->phyname[0] = '\0'; 2873 snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name", 2874 drv->first_bss.ifname); 2875 f = open(buf, O_RDONLY); 2876 if (f < 0) { 2877 wpa_printf(MSG_DEBUG, "Could not open file %s: %s", 2878 buf, strerror(errno)); 2879 return; 2880 } 2881 2882 rv = read(f, drv->phyname, sizeof(drv->phyname) - 1); 2883 close(f); 2884 if (rv < 0) { 2885 wpa_printf(MSG_DEBUG, "Could not read file %s: %s", 2886 buf, strerror(errno)); 2887 return; 2888 } 2889 2890 drv->phyname[rv] = '\0'; 2891 pos = os_strchr(drv->phyname, '\n'); 2892 if (pos) 2893 *pos = '\0'; 2894 wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s", 2895 drv->first_bss.ifname, drv->phyname); 2896 } 2897 2898 2899 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock, 2900 void *eloop_ctx, 2901 void *handle) 2902 { 2903 struct wpa_driver_nl80211_data *drv = eloop_ctx; 2904 u8 data[2048]; 2905 struct msghdr msg; 2906 struct iovec entry; 2907 u8 control[512]; 2908 struct cmsghdr *cmsg; 2909 int res, found_ee = 0, found_wifi = 0, acked = 0; 2910 union wpa_event_data event; 2911 2912 memset(&msg, 0, sizeof(msg)); 2913 msg.msg_iov = &entry; 2914 msg.msg_iovlen = 1; 2915 entry.iov_base = data; 2916 entry.iov_len = sizeof(data); 2917 msg.msg_control = &control; 2918 msg.msg_controllen = sizeof(control); 2919 2920 res = recvmsg(sock, &msg, MSG_ERRQUEUE); 2921 /* if error or not fitting 802.3 header, return */ 2922 if (res < 14) 2923 return; 2924 2925 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) 2926 { 2927 if (cmsg->cmsg_level == SOL_SOCKET && 2928 cmsg->cmsg_type == SCM_WIFI_STATUS) { 2929 int *ack; 2930 2931 found_wifi = 1; 2932 ack = (void *)CMSG_DATA(cmsg); 2933 acked = *ack; 2934 } 2935 2936 if (cmsg->cmsg_level == SOL_PACKET && 2937 cmsg->cmsg_type == PACKET_TX_TIMESTAMP) { 2938 struct sock_extended_err *err = 2939 (struct sock_extended_err *)CMSG_DATA(cmsg); 2940 2941 if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS) 2942 found_ee = 1; 2943 } 2944 } 2945 2946 if (!found_ee || !found_wifi) 2947 return; 2948 2949 memset(&event, 0, sizeof(event)); 2950 event.eapol_tx_status.dst = data; 2951 event.eapol_tx_status.data = data + 14; 2952 event.eapol_tx_status.data_len = res - 14; 2953 event.eapol_tx_status.ack = acked; 2954 wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event); 2955 } 2956 2957 2958 static int nl80211_init_bss(struct i802_bss *bss) 2959 { 2960 bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 2961 if (!bss->nl_cb) 2962 return -1; 2963 2964 nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 2965 no_seq_check, NULL); 2966 nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 2967 process_bss_event, bss); 2968 2969 return 0; 2970 } 2971 2972 2973 static void nl80211_destroy_bss(struct i802_bss *bss) 2974 { 2975 nl_cb_put(bss->nl_cb); 2976 bss->nl_cb = NULL; 2977 } 2978 2979 2980 /** 2981 * wpa_driver_nl80211_init - Initialize nl80211 driver interface 2982 * @ctx: context to be used when calling wpa_supplicant functions, 2983 * e.g., wpa_supplicant_event() 2984 * @ifname: interface name, e.g., wlan0 2985 * @global_priv: private driver global data from global_init() 2986 * Returns: Pointer to private data, %NULL on failure 2987 */ 2988 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname, 2989 void *global_priv) 2990 { 2991 struct wpa_driver_nl80211_data *drv; 2992 struct rfkill_config *rcfg; 2993 struct i802_bss *bss; 2994 2995 if (global_priv == NULL) 2996 return NULL; 2997 drv = os_zalloc(sizeof(*drv)); 2998 if (drv == NULL) 2999 return NULL; 3000 drv->global = global_priv; 3001 drv->ctx = ctx; 3002 bss = &drv->first_bss; 3003 bss->drv = drv; 3004 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname)); 3005 drv->monitor_ifidx = -1; 3006 drv->monitor_sock = -1; 3007 drv->eapol_tx_sock = -1; 3008 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 3009 3010 if (wpa_driver_nl80211_init_nl(drv)) { 3011 os_free(drv); 3012 return NULL; 3013 } 3014 3015 if (nl80211_init_bss(bss)) 3016 goto failed; 3017 3018 nl80211_get_phy_name(drv); 3019 3020 rcfg = os_zalloc(sizeof(*rcfg)); 3021 if (rcfg == NULL) 3022 goto failed; 3023 rcfg->ctx = drv; 3024 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname)); 3025 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked; 3026 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked; 3027 drv->rfkill = rfkill_init(rcfg); 3028 if (drv->rfkill == NULL) { 3029 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available"); 3030 os_free(rcfg); 3031 } 3032 3033 if (wpa_driver_nl80211_finish_drv_init(drv)) 3034 goto failed; 3035 3036 drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0); 3037 if (drv->eapol_tx_sock < 0) 3038 goto failed; 3039 3040 if (drv->data_tx_status) { 3041 int enabled = 1; 3042 3043 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS, 3044 &enabled, sizeof(enabled)) < 0) { 3045 wpa_printf(MSG_DEBUG, 3046 "nl80211: wifi status sockopt failed\n"); 3047 drv->data_tx_status = 0; 3048 if (!drv->use_monitor) 3049 drv->capa.flags &= 3050 ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 3051 } else { 3052 eloop_register_read_sock(drv->eapol_tx_sock, 3053 wpa_driver_nl80211_handle_eapol_tx_status, 3054 drv, NULL); 3055 } 3056 } 3057 3058 if (drv->global) { 3059 dl_list_add(&drv->global->interfaces, &drv->list); 3060 drv->in_interface_list = 1; 3061 } 3062 3063 return bss; 3064 3065 failed: 3066 wpa_driver_nl80211_deinit(bss); 3067 return NULL; 3068 } 3069 3070 3071 static int nl80211_register_frame(struct i802_bss *bss, 3072 struct nl_handle *nl_handle, 3073 u16 type, const u8 *match, size_t match_len) 3074 { 3075 struct wpa_driver_nl80211_data *drv = bss->drv; 3076 struct nl_msg *msg; 3077 int ret = -1; 3078 3079 msg = nlmsg_alloc(); 3080 if (!msg) 3081 return -1; 3082 3083 wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x nl_handle=%p", 3084 type, nl_handle); 3085 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 3086 match, match_len); 3087 3088 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION); 3089 3090 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 3091 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type); 3092 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match); 3093 3094 ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL); 3095 msg = NULL; 3096 if (ret) { 3097 wpa_printf(MSG_DEBUG, "nl80211: Register frame command " 3098 "failed (type=%u): ret=%d (%s)", 3099 type, ret, strerror(-ret)); 3100 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 3101 match, match_len); 3102 goto nla_put_failure; 3103 } 3104 ret = 0; 3105 nla_put_failure: 3106 nlmsg_free(msg); 3107 return ret; 3108 } 3109 3110 3111 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss) 3112 { 3113 struct wpa_driver_nl80211_data *drv = bss->drv; 3114 3115 if (bss->nl_mgmt) { 3116 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting " 3117 "already on! (nl_mgmt=%p)", bss->nl_mgmt); 3118 return -1; 3119 } 3120 3121 bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt"); 3122 if (bss->nl_mgmt == NULL) 3123 return -1; 3124 3125 eloop_register_read_sock(nl_socket_get_fd(bss->nl_mgmt), 3126 wpa_driver_nl80211_event_receive, bss->nl_cb, 3127 bss->nl_mgmt); 3128 3129 return 0; 3130 } 3131 3132 3133 static int nl80211_register_action_frame(struct i802_bss *bss, 3134 const u8 *match, size_t match_len) 3135 { 3136 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4); 3137 return nl80211_register_frame(bss, bss->nl_mgmt, 3138 type, match, match_len); 3139 } 3140 3141 3142 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss) 3143 { 3144 struct wpa_driver_nl80211_data *drv = bss->drv; 3145 3146 if (nl80211_alloc_mgmt_handle(bss)) 3147 return -1; 3148 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP " 3149 "handle %p", bss->nl_mgmt); 3150 3151 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING) 3152 /* GAS Initial Request */ 3153 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0) 3154 return -1; 3155 /* GAS Initial Response */ 3156 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0) 3157 return -1; 3158 /* GAS Comeback Request */ 3159 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0) 3160 return -1; 3161 /* GAS Comeback Response */ 3162 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0) 3163 return -1; 3164 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */ 3165 #ifdef CONFIG_P2P 3166 /* P2P Public Action */ 3167 if (nl80211_register_action_frame(bss, 3168 (u8 *) "\x04\x09\x50\x6f\x9a\x09", 3169 6) < 0) 3170 return -1; 3171 /* P2P Action */ 3172 if (nl80211_register_action_frame(bss, 3173 (u8 *) "\x7f\x50\x6f\x9a\x09", 3174 5) < 0) 3175 return -1; 3176 #endif /* CONFIG_P2P */ 3177 #ifdef CONFIG_IEEE80211W 3178 /* SA Query Response */ 3179 if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0) 3180 return -1; 3181 #endif /* CONFIG_IEEE80211W */ 3182 #ifdef CONFIG_TDLS 3183 if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) { 3184 /* TDLS Discovery Response */ 3185 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) < 3186 0) 3187 return -1; 3188 } 3189 #endif /* CONFIG_TDLS */ 3190 3191 /* FT Action frames */ 3192 if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0) 3193 return -1; 3194 else 3195 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT | 3196 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK; 3197 3198 /* WNM - BSS Transition Management Request */ 3199 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0) 3200 return -1; 3201 3202 return 0; 3203 } 3204 3205 3206 static int nl80211_register_spurious_class3(struct i802_bss *bss) 3207 { 3208 struct wpa_driver_nl80211_data *drv = bss->drv; 3209 struct nl_msg *msg; 3210 int ret = -1; 3211 3212 msg = nlmsg_alloc(); 3213 if (!msg) 3214 return -1; 3215 3216 nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME); 3217 3218 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 3219 3220 ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL); 3221 msg = NULL; 3222 if (ret) { 3223 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 " 3224 "failed: ret=%d (%s)", 3225 ret, strerror(-ret)); 3226 goto nla_put_failure; 3227 } 3228 ret = 0; 3229 nla_put_failure: 3230 nlmsg_free(msg); 3231 return ret; 3232 } 3233 3234 3235 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss) 3236 { 3237 static const int stypes[] = { 3238 WLAN_FC_STYPE_AUTH, 3239 WLAN_FC_STYPE_ASSOC_REQ, 3240 WLAN_FC_STYPE_REASSOC_REQ, 3241 WLAN_FC_STYPE_DISASSOC, 3242 WLAN_FC_STYPE_DEAUTH, 3243 WLAN_FC_STYPE_ACTION, 3244 WLAN_FC_STYPE_PROBE_REQ, 3245 /* Beacon doesn't work as mac80211 doesn't currently allow 3246 * it, but it wouldn't really be the right thing anyway as 3247 * it isn't per interface ... maybe just dump the scan 3248 * results periodically for OLBC? 3249 */ 3250 // WLAN_FC_STYPE_BEACON, 3251 }; 3252 unsigned int i; 3253 3254 if (nl80211_alloc_mgmt_handle(bss)) 3255 return -1; 3256 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 3257 "handle %p", bss->nl_mgmt); 3258 3259 for (i = 0; i < sizeof(stypes) / sizeof(stypes[0]); i++) { 3260 if (nl80211_register_frame(bss, bss->nl_mgmt, 3261 (WLAN_FC_TYPE_MGMT << 2) | 3262 (stypes[i] << 4), 3263 NULL, 0) < 0) { 3264 goto out_err; 3265 } 3266 } 3267 3268 if (nl80211_register_spurious_class3(bss)) 3269 goto out_err; 3270 3271 if (nl80211_get_wiphy_data_ap(bss) == NULL) 3272 goto out_err; 3273 3274 return 0; 3275 3276 out_err: 3277 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3278 nl_destroy_handles(&bss->nl_mgmt); 3279 return -1; 3280 } 3281 3282 3283 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss) 3284 { 3285 if (nl80211_alloc_mgmt_handle(bss)) 3286 return -1; 3287 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 3288 "handle %p (device SME)", bss->nl_mgmt); 3289 3290 if (nl80211_register_frame(bss, bss->nl_mgmt, 3291 (WLAN_FC_TYPE_MGMT << 2) | 3292 (WLAN_FC_STYPE_ACTION << 4), 3293 NULL, 0) < 0) 3294 goto out_err; 3295 3296 return 0; 3297 3298 out_err: 3299 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3300 nl_destroy_handles(&bss->nl_mgmt); 3301 return -1; 3302 } 3303 3304 3305 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason) 3306 { 3307 if (bss->nl_mgmt == NULL) 3308 return; 3309 wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p " 3310 "(%s)", bss->nl_mgmt, reason); 3311 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3312 nl_destroy_handles(&bss->nl_mgmt); 3313 3314 nl80211_put_wiphy_data_ap(bss); 3315 } 3316 3317 3318 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx) 3319 { 3320 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL); 3321 } 3322 3323 3324 static int 3325 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv) 3326 { 3327 struct i802_bss *bss = &drv->first_bss; 3328 int send_rfkill_event = 0; 3329 3330 drv->ifindex = if_nametoindex(bss->ifname); 3331 drv->first_bss.ifindex = drv->ifindex; 3332 3333 #ifndef HOSTAPD 3334 /* 3335 * Make sure the interface starts up in station mode unless this is a 3336 * dynamically added interface (e.g., P2P) that was already configured 3337 * with proper iftype. 3338 */ 3339 if (drv->ifindex != drv->global->if_add_ifindex && 3340 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION) < 0) { 3341 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver to " 3342 "use managed mode"); 3343 return -1; 3344 } 3345 3346 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { 3347 if (rfkill_is_blocked(drv->rfkill)) { 3348 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable " 3349 "interface '%s' due to rfkill", 3350 bss->ifname); 3351 drv->if_disabled = 1; 3352 send_rfkill_event = 1; 3353 } else { 3354 wpa_printf(MSG_ERROR, "nl80211: Could not set " 3355 "interface '%s' UP", bss->ifname); 3356 return -1; 3357 } 3358 } 3359 3360 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 3361 1, IF_OPER_DORMANT); 3362 #endif /* HOSTAPD */ 3363 3364 if (wpa_driver_nl80211_capa(drv)) 3365 return -1; 3366 3367 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 3368 bss->addr)) 3369 return -1; 3370 3371 if (send_rfkill_event) { 3372 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill, 3373 drv, drv->ctx); 3374 } 3375 3376 return 0; 3377 } 3378 3379 3380 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv) 3381 { 3382 struct nl_msg *msg; 3383 3384 msg = nlmsg_alloc(); 3385 if (!msg) 3386 return -ENOMEM; 3387 3388 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON); 3389 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3390 3391 return send_and_recv_msgs(drv, msg, NULL, NULL); 3392 nla_put_failure: 3393 nlmsg_free(msg); 3394 return -ENOBUFS; 3395 } 3396 3397 3398 /** 3399 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface 3400 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init() 3401 * 3402 * Shut down driver interface and processing of driver events. Free 3403 * private data buffer if one was allocated in wpa_driver_nl80211_init(). 3404 */ 3405 static void wpa_driver_nl80211_deinit(void *priv) 3406 { 3407 struct i802_bss *bss = priv; 3408 struct wpa_driver_nl80211_data *drv = bss->drv; 3409 3410 bss->in_deinit = 1; 3411 if (drv->data_tx_status) 3412 eloop_unregister_read_sock(drv->eapol_tx_sock); 3413 if (drv->eapol_tx_sock >= 0) 3414 close(drv->eapol_tx_sock); 3415 3416 if (bss->nl_preq) 3417 wpa_driver_nl80211_probe_req_report(bss, 0); 3418 if (bss->added_if_into_bridge) { 3419 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 3420 bss->ifname) < 0) 3421 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 3422 "interface %s from bridge %s: %s", 3423 bss->ifname, bss->brname, strerror(errno)); 3424 } 3425 if (bss->added_bridge) { 3426 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 3427 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 3428 "bridge %s: %s", 3429 bss->brname, strerror(errno)); 3430 } 3431 3432 nl80211_remove_monitor_interface(drv); 3433 3434 if (is_ap_interface(drv->nlmode)) 3435 wpa_driver_nl80211_del_beacon(drv); 3436 3437 #ifdef HOSTAPD 3438 if (drv->last_freq_ht) { 3439 /* Clear HT flags from the driver */ 3440 struct hostapd_freq_params freq; 3441 os_memset(&freq, 0, sizeof(freq)); 3442 freq.freq = drv->last_freq; 3443 i802_set_freq(priv, &freq); 3444 } 3445 3446 if (drv->eapol_sock >= 0) { 3447 eloop_unregister_read_sock(drv->eapol_sock); 3448 close(drv->eapol_sock); 3449 } 3450 3451 if (drv->if_indices != drv->default_if_indices) 3452 os_free(drv->if_indices); 3453 #endif /* HOSTAPD */ 3454 3455 if (drv->disabled_11b_rates) 3456 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 3457 3458 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0, 3459 IF_OPER_UP); 3460 rfkill_deinit(drv->rfkill); 3461 3462 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 3463 3464 (void) linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0); 3465 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION); 3466 nl80211_mgmt_unsubscribe(bss, "deinit"); 3467 3468 nl_cb_put(drv->nl_cb); 3469 3470 nl80211_destroy_bss(&drv->first_bss); 3471 3472 os_free(drv->filter_ssids); 3473 3474 os_free(drv->auth_ie); 3475 3476 if (drv->in_interface_list) 3477 dl_list_del(&drv->list); 3478 3479 os_free(drv); 3480 } 3481 3482 3483 /** 3484 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion 3485 * @eloop_ctx: Driver private data 3486 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init() 3487 * 3488 * This function can be used as registered timeout when starting a scan to 3489 * generate a scan completed event if the driver does not report this. 3490 */ 3491 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx) 3492 { 3493 struct wpa_driver_nl80211_data *drv = eloop_ctx; 3494 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) { 3495 wpa_driver_nl80211_set_mode(&drv->first_bss, 3496 drv->ap_scan_as_station); 3497 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 3498 } 3499 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results"); 3500 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL); 3501 } 3502 3503 3504 static struct nl_msg * 3505 nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd, 3506 struct wpa_driver_scan_params *params) 3507 { 3508 struct nl_msg *msg; 3509 int err; 3510 size_t i; 3511 3512 msg = nlmsg_alloc(); 3513 if (!msg) 3514 return NULL; 3515 3516 nl80211_cmd(drv, msg, 0, cmd); 3517 3518 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) < 0) 3519 goto fail; 3520 3521 if (params->num_ssids) { 3522 struct nl_msg *ssids = nlmsg_alloc(); 3523 if (ssids == NULL) 3524 goto fail; 3525 for (i = 0; i < params->num_ssids; i++) { 3526 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID", 3527 params->ssids[i].ssid, 3528 params->ssids[i].ssid_len); 3529 if (nla_put(ssids, i + 1, params->ssids[i].ssid_len, 3530 params->ssids[i].ssid) < 0) { 3531 nlmsg_free(ssids); 3532 goto fail; 3533 } 3534 } 3535 err = nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids); 3536 nlmsg_free(ssids); 3537 if (err < 0) 3538 goto fail; 3539 } 3540 3541 if (params->extra_ies) { 3542 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs", 3543 params->extra_ies, params->extra_ies_len); 3544 if (nla_put(msg, NL80211_ATTR_IE, params->extra_ies_len, 3545 params->extra_ies) < 0) 3546 goto fail; 3547 } 3548 3549 if (params->freqs) { 3550 struct nl_msg *freqs = nlmsg_alloc(); 3551 if (freqs == NULL) 3552 goto fail; 3553 for (i = 0; params->freqs[i]; i++) { 3554 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u " 3555 "MHz", params->freqs[i]); 3556 if (nla_put_u32(freqs, i + 1, params->freqs[i]) < 0) { 3557 nlmsg_free(freqs); 3558 goto fail; 3559 } 3560 } 3561 err = nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, 3562 freqs); 3563 nlmsg_free(freqs); 3564 if (err < 0) 3565 goto fail; 3566 } 3567 3568 os_free(drv->filter_ssids); 3569 drv->filter_ssids = params->filter_ssids; 3570 params->filter_ssids = NULL; 3571 drv->num_filter_ssids = params->num_filter_ssids; 3572 3573 return msg; 3574 3575 fail: 3576 nlmsg_free(msg); 3577 return NULL; 3578 } 3579 3580 3581 /** 3582 * wpa_driver_nl80211_scan - Request the driver to initiate scan 3583 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 3584 * @params: Scan parameters 3585 * Returns: 0 on success, -1 on failure 3586 */ 3587 static int wpa_driver_nl80211_scan(void *priv, 3588 struct wpa_driver_scan_params *params) 3589 { 3590 struct i802_bss *bss = priv; 3591 struct wpa_driver_nl80211_data *drv = bss->drv; 3592 int ret = -1, timeout; 3593 struct nl_msg *msg, *rates = NULL; 3594 3595 drv->scan_for_auth = 0; 3596 3597 msg = nl80211_scan_common(drv, NL80211_CMD_TRIGGER_SCAN, params); 3598 if (!msg) 3599 return -1; 3600 3601 if (params->p2p_probe) { 3602 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates"); 3603 3604 rates = nlmsg_alloc(); 3605 if (rates == NULL) 3606 goto nla_put_failure; 3607 3608 /* 3609 * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates 3610 * by masking out everything else apart from the OFDM rates 6, 3611 * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz 3612 * rates are left enabled. 3613 */ 3614 NLA_PUT(rates, NL80211_BAND_2GHZ, 8, 3615 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 3616 if (nla_put_nested(msg, NL80211_ATTR_SCAN_SUPP_RATES, rates) < 3617 0) 3618 goto nla_put_failure; 3619 3620 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 3621 } 3622 3623 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3624 msg = NULL; 3625 if (ret) { 3626 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d " 3627 "(%s)", ret, strerror(-ret)); 3628 #ifdef HOSTAPD 3629 if (is_ap_interface(drv->nlmode)) { 3630 /* 3631 * mac80211 does not allow scan requests in AP mode, so 3632 * try to do this in station mode. 3633 */ 3634 if (wpa_driver_nl80211_set_mode( 3635 bss, NL80211_IFTYPE_STATION)) 3636 goto nla_put_failure; 3637 3638 if (wpa_driver_nl80211_scan(drv, params)) { 3639 wpa_driver_nl80211_set_mode(bss, drv->nlmode); 3640 goto nla_put_failure; 3641 } 3642 3643 /* Restore AP mode when processing scan results */ 3644 drv->ap_scan_as_station = drv->nlmode; 3645 ret = 0; 3646 } else 3647 goto nla_put_failure; 3648 #else /* HOSTAPD */ 3649 goto nla_put_failure; 3650 #endif /* HOSTAPD */ 3651 } 3652 3653 /* Not all drivers generate "scan completed" wireless event, so try to 3654 * read results after a timeout. */ 3655 timeout = 10; 3656 if (drv->scan_complete_events) { 3657 /* 3658 * The driver seems to deliver events to notify when scan is 3659 * complete, so use longer timeout to avoid race conditions 3660 * with scanning and following association request. 3661 */ 3662 timeout = 30; 3663 } 3664 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d " 3665 "seconds", ret, timeout); 3666 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 3667 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout, 3668 drv, drv->ctx); 3669 3670 nla_put_failure: 3671 nlmsg_free(msg); 3672 nlmsg_free(rates); 3673 return ret; 3674 } 3675 3676 3677 /** 3678 * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan 3679 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 3680 * @params: Scan parameters 3681 * @interval: Interval between scan cycles in milliseconds 3682 * Returns: 0 on success, -1 on failure or if not supported 3683 */ 3684 static int wpa_driver_nl80211_sched_scan(void *priv, 3685 struct wpa_driver_scan_params *params, 3686 u32 interval) 3687 { 3688 struct i802_bss *bss = priv; 3689 struct wpa_driver_nl80211_data *drv = bss->drv; 3690 int ret = -1; 3691 struct nl_msg *msg; 3692 struct nl_msg *match_set_ssid = NULL, *match_sets = NULL; 3693 struct nl_msg *match_set_rssi = NULL; 3694 size_t i; 3695 3696 #ifdef ANDROID 3697 if (!drv->capa.sched_scan_supported) 3698 return android_pno_start(bss, params); 3699 #endif /* ANDROID */ 3700 3701 msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params); 3702 if (!msg) 3703 goto nla_put_failure; 3704 3705 NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval); 3706 3707 if ((drv->num_filter_ssids && 3708 (int) drv->num_filter_ssids <= drv->capa.max_match_sets) || 3709 params->filter_rssi) { 3710 match_sets = nlmsg_alloc(); 3711 if (match_sets == NULL) 3712 goto nla_put_failure; 3713 3714 for (i = 0; i < drv->num_filter_ssids; i++) { 3715 wpa_hexdump_ascii(MSG_MSGDUMP, 3716 "nl80211: Sched scan filter SSID", 3717 drv->filter_ssids[i].ssid, 3718 drv->filter_ssids[i].ssid_len); 3719 3720 match_set_ssid = nlmsg_alloc(); 3721 if (match_set_ssid == NULL) 3722 goto nla_put_failure; 3723 NLA_PUT(match_set_ssid, 3724 NL80211_ATTR_SCHED_SCAN_MATCH_SSID, 3725 drv->filter_ssids[i].ssid_len, 3726 drv->filter_ssids[i].ssid); 3727 3728 if (nla_put_nested(match_sets, i + 1, match_set_ssid) < 3729 0) 3730 goto nla_put_failure; 3731 } 3732 3733 if (params->filter_rssi) { 3734 match_set_rssi = nlmsg_alloc(); 3735 if (match_set_rssi == NULL) 3736 goto nla_put_failure; 3737 NLA_PUT_U32(match_set_rssi, 3738 NL80211_SCHED_SCAN_MATCH_ATTR_RSSI, 3739 params->filter_rssi); 3740 wpa_printf(MSG_MSGDUMP, 3741 "nl80211: Sched scan RSSI filter %d dBm", 3742 params->filter_rssi); 3743 if (nla_put_nested(match_sets, 0, match_set_rssi) < 0) 3744 goto nla_put_failure; 3745 } 3746 3747 if (nla_put_nested(msg, NL80211_ATTR_SCHED_SCAN_MATCH, 3748 match_sets) < 0) 3749 goto nla_put_failure; 3750 } 3751 3752 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3753 3754 /* TODO: if we get an error here, we should fall back to normal scan */ 3755 3756 msg = NULL; 3757 if (ret) { 3758 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: " 3759 "ret=%d (%s)", ret, strerror(-ret)); 3760 goto nla_put_failure; 3761 } 3762 3763 wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - " 3764 "scan interval %d msec", ret, interval); 3765 3766 nla_put_failure: 3767 nlmsg_free(match_set_ssid); 3768 nlmsg_free(match_sets); 3769 nlmsg_free(match_set_rssi); 3770 nlmsg_free(msg); 3771 return ret; 3772 } 3773 3774 3775 /** 3776 * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan 3777 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 3778 * Returns: 0 on success, -1 on failure or if not supported 3779 */ 3780 static int wpa_driver_nl80211_stop_sched_scan(void *priv) 3781 { 3782 struct i802_bss *bss = priv; 3783 struct wpa_driver_nl80211_data *drv = bss->drv; 3784 int ret = 0; 3785 struct nl_msg *msg; 3786 3787 #ifdef ANDROID 3788 if (!drv->capa.sched_scan_supported) 3789 return android_pno_stop(bss); 3790 #endif /* ANDROID */ 3791 3792 msg = nlmsg_alloc(); 3793 if (!msg) 3794 return -1; 3795 3796 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN); 3797 3798 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3799 3800 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3801 msg = NULL; 3802 if (ret) { 3803 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: " 3804 "ret=%d (%s)", ret, strerror(-ret)); 3805 goto nla_put_failure; 3806 } 3807 3808 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret); 3809 3810 nla_put_failure: 3811 nlmsg_free(msg); 3812 return ret; 3813 } 3814 3815 3816 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie) 3817 { 3818 const u8 *end, *pos; 3819 3820 if (ies == NULL) 3821 return NULL; 3822 3823 pos = ies; 3824 end = ies + ies_len; 3825 3826 while (pos + 1 < end) { 3827 if (pos + 2 + pos[1] > end) 3828 break; 3829 if (pos[0] == ie) 3830 return pos; 3831 pos += 2 + pos[1]; 3832 } 3833 3834 return NULL; 3835 } 3836 3837 3838 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv, 3839 const u8 *ie, size_t ie_len) 3840 { 3841 const u8 *ssid; 3842 size_t i; 3843 3844 if (drv->filter_ssids == NULL) 3845 return 0; 3846 3847 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID); 3848 if (ssid == NULL) 3849 return 1; 3850 3851 for (i = 0; i < drv->num_filter_ssids; i++) { 3852 if (ssid[1] == drv->filter_ssids[i].ssid_len && 3853 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) == 3854 0) 3855 return 0; 3856 } 3857 3858 return 1; 3859 } 3860 3861 3862 static int bss_info_handler(struct nl_msg *msg, void *arg) 3863 { 3864 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 3865 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 3866 struct nlattr *bss[NL80211_BSS_MAX + 1]; 3867 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { 3868 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC }, 3869 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, 3870 [NL80211_BSS_TSF] = { .type = NLA_U64 }, 3871 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 }, 3872 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 }, 3873 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC }, 3874 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 }, 3875 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 }, 3876 [NL80211_BSS_STATUS] = { .type = NLA_U32 }, 3877 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 }, 3878 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC }, 3879 }; 3880 struct nl80211_bss_info_arg *_arg = arg; 3881 struct wpa_scan_results *res = _arg->res; 3882 struct wpa_scan_res **tmp; 3883 struct wpa_scan_res *r; 3884 const u8 *ie, *beacon_ie; 3885 size_t ie_len, beacon_ie_len; 3886 u8 *pos; 3887 size_t i; 3888 3889 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 3890 genlmsg_attrlen(gnlh, 0), NULL); 3891 if (!tb[NL80211_ATTR_BSS]) 3892 return NL_SKIP; 3893 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS], 3894 bss_policy)) 3895 return NL_SKIP; 3896 if (bss[NL80211_BSS_STATUS]) { 3897 enum nl80211_bss_status status; 3898 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 3899 if (status == NL80211_BSS_STATUS_ASSOCIATED && 3900 bss[NL80211_BSS_FREQUENCY]) { 3901 _arg->assoc_freq = 3902 nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 3903 wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz", 3904 _arg->assoc_freq); 3905 } 3906 if (status == NL80211_BSS_STATUS_ASSOCIATED && 3907 bss[NL80211_BSS_BSSID]) { 3908 os_memcpy(_arg->assoc_bssid, 3909 nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN); 3910 wpa_printf(MSG_DEBUG, "nl80211: Associated with " 3911 MACSTR, MAC2STR(_arg->assoc_bssid)); 3912 } 3913 } 3914 if (!res) 3915 return NL_SKIP; 3916 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) { 3917 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 3918 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 3919 } else { 3920 ie = NULL; 3921 ie_len = 0; 3922 } 3923 if (bss[NL80211_BSS_BEACON_IES]) { 3924 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]); 3925 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]); 3926 } else { 3927 beacon_ie = NULL; 3928 beacon_ie_len = 0; 3929 } 3930 3931 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie, 3932 ie ? ie_len : beacon_ie_len)) 3933 return NL_SKIP; 3934 3935 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len); 3936 if (r == NULL) 3937 return NL_SKIP; 3938 if (bss[NL80211_BSS_BSSID]) 3939 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]), 3940 ETH_ALEN); 3941 if (bss[NL80211_BSS_FREQUENCY]) 3942 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 3943 if (bss[NL80211_BSS_BEACON_INTERVAL]) 3944 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]); 3945 if (bss[NL80211_BSS_CAPABILITY]) 3946 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]); 3947 r->flags |= WPA_SCAN_NOISE_INVALID; 3948 if (bss[NL80211_BSS_SIGNAL_MBM]) { 3949 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]); 3950 r->level /= 100; /* mBm to dBm */ 3951 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID; 3952 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) { 3953 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]); 3954 r->flags |= WPA_SCAN_QUAL_INVALID; 3955 } else 3956 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID; 3957 if (bss[NL80211_BSS_TSF]) 3958 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]); 3959 if (bss[NL80211_BSS_SEEN_MS_AGO]) 3960 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]); 3961 r->ie_len = ie_len; 3962 pos = (u8 *) (r + 1); 3963 if (ie) { 3964 os_memcpy(pos, ie, ie_len); 3965 pos += ie_len; 3966 } 3967 r->beacon_ie_len = beacon_ie_len; 3968 if (beacon_ie) 3969 os_memcpy(pos, beacon_ie, beacon_ie_len); 3970 3971 if (bss[NL80211_BSS_STATUS]) { 3972 enum nl80211_bss_status status; 3973 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 3974 switch (status) { 3975 case NL80211_BSS_STATUS_AUTHENTICATED: 3976 r->flags |= WPA_SCAN_AUTHENTICATED; 3977 break; 3978 case NL80211_BSS_STATUS_ASSOCIATED: 3979 r->flags |= WPA_SCAN_ASSOCIATED; 3980 break; 3981 default: 3982 break; 3983 } 3984 } 3985 3986 /* 3987 * cfg80211 maintains separate BSS table entries for APs if the same 3988 * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does 3989 * not use frequency as a separate key in the BSS table, so filter out 3990 * duplicated entries. Prefer associated BSS entry in such a case in 3991 * order to get the correct frequency into the BSS table. 3992 */ 3993 for (i = 0; i < res->num; i++) { 3994 const u8 *s1, *s2; 3995 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0) 3996 continue; 3997 3998 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1), 3999 res->res[i]->ie_len, WLAN_EID_SSID); 4000 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID); 4001 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] || 4002 os_memcmp(s1, s2, 2 + s1[1]) != 0) 4003 continue; 4004 4005 /* Same BSSID,SSID was already included in scan results */ 4006 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result " 4007 "for " MACSTR, MAC2STR(r->bssid)); 4008 4009 if ((r->flags & WPA_SCAN_ASSOCIATED) && 4010 !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) { 4011 os_free(res->res[i]); 4012 res->res[i] = r; 4013 } else 4014 os_free(r); 4015 return NL_SKIP; 4016 } 4017 4018 tmp = os_realloc_array(res->res, res->num + 1, 4019 sizeof(struct wpa_scan_res *)); 4020 if (tmp == NULL) { 4021 os_free(r); 4022 return NL_SKIP; 4023 } 4024 tmp[res->num++] = r; 4025 res->res = tmp; 4026 4027 return NL_SKIP; 4028 } 4029 4030 4031 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv, 4032 const u8 *addr) 4033 { 4034 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 4035 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state " 4036 "mismatch (" MACSTR ")", MAC2STR(addr)); 4037 wpa_driver_nl80211_mlme(drv, addr, 4038 NL80211_CMD_DEAUTHENTICATE, 4039 WLAN_REASON_PREV_AUTH_NOT_VALID, 1); 4040 } 4041 } 4042 4043 4044 static void wpa_driver_nl80211_check_bss_status( 4045 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res) 4046 { 4047 size_t i; 4048 4049 for (i = 0; i < res->num; i++) { 4050 struct wpa_scan_res *r = res->res[i]; 4051 if (r->flags & WPA_SCAN_AUTHENTICATED) { 4052 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 4053 "indicates BSS status with " MACSTR 4054 " as authenticated", 4055 MAC2STR(r->bssid)); 4056 if (is_sta_interface(drv->nlmode) && 4057 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 && 4058 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) != 4059 0) { 4060 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID" 4061 " in local state (auth=" MACSTR 4062 " assoc=" MACSTR ")", 4063 MAC2STR(drv->auth_bssid), 4064 MAC2STR(drv->bssid)); 4065 clear_state_mismatch(drv, r->bssid); 4066 } 4067 } 4068 4069 if (r->flags & WPA_SCAN_ASSOCIATED) { 4070 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 4071 "indicate BSS status with " MACSTR 4072 " as associated", 4073 MAC2STR(r->bssid)); 4074 if (is_sta_interface(drv->nlmode) && 4075 !drv->associated) { 4076 wpa_printf(MSG_DEBUG, "nl80211: Local state " 4077 "(not associated) does not match " 4078 "with BSS state"); 4079 clear_state_mismatch(drv, r->bssid); 4080 } else if (is_sta_interface(drv->nlmode) && 4081 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) != 4082 0) { 4083 wpa_printf(MSG_DEBUG, "nl80211: Local state " 4084 "(associated with " MACSTR ") does " 4085 "not match with BSS state", 4086 MAC2STR(drv->bssid)); 4087 clear_state_mismatch(drv, r->bssid); 4088 clear_state_mismatch(drv, drv->bssid); 4089 } 4090 } 4091 } 4092 } 4093 4094 4095 static struct wpa_scan_results * 4096 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv) 4097 { 4098 struct nl_msg *msg; 4099 struct wpa_scan_results *res; 4100 int ret; 4101 struct nl80211_bss_info_arg arg; 4102 4103 res = os_zalloc(sizeof(*res)); 4104 if (res == NULL) 4105 return NULL; 4106 msg = nlmsg_alloc(); 4107 if (!msg) 4108 goto nla_put_failure; 4109 4110 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 4111 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4112 4113 arg.drv = drv; 4114 arg.res = res; 4115 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 4116 msg = NULL; 4117 if (ret == 0) { 4118 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu " 4119 "BSSes)", (unsigned long) res->num); 4120 nl80211_get_noise_for_scan_results(drv, res); 4121 return res; 4122 } 4123 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 4124 "(%s)", ret, strerror(-ret)); 4125 nla_put_failure: 4126 nlmsg_free(msg); 4127 wpa_scan_results_free(res); 4128 return NULL; 4129 } 4130 4131 4132 /** 4133 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results 4134 * @priv: Pointer to private wext data from wpa_driver_nl80211_init() 4135 * Returns: Scan results on success, -1 on failure 4136 */ 4137 static struct wpa_scan_results * 4138 wpa_driver_nl80211_get_scan_results(void *priv) 4139 { 4140 struct i802_bss *bss = priv; 4141 struct wpa_driver_nl80211_data *drv = bss->drv; 4142 struct wpa_scan_results *res; 4143 4144 res = nl80211_get_scan_results(drv); 4145 if (res) 4146 wpa_driver_nl80211_check_bss_status(drv, res); 4147 return res; 4148 } 4149 4150 4151 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv) 4152 { 4153 struct wpa_scan_results *res; 4154 size_t i; 4155 4156 res = nl80211_get_scan_results(drv); 4157 if (res == NULL) { 4158 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results"); 4159 return; 4160 } 4161 4162 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump"); 4163 for (i = 0; i < res->num; i++) { 4164 struct wpa_scan_res *r = res->res[i]; 4165 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s", 4166 (int) i, (int) res->num, MAC2STR(r->bssid), 4167 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "", 4168 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : ""); 4169 } 4170 4171 wpa_scan_results_free(res); 4172 } 4173 4174 4175 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv, 4176 enum wpa_alg alg, const u8 *addr, 4177 int key_idx, int set_tx, 4178 const u8 *seq, size_t seq_len, 4179 const u8 *key, size_t key_len) 4180 { 4181 struct i802_bss *bss = priv; 4182 struct wpa_driver_nl80211_data *drv = bss->drv; 4183 int ifindex = if_nametoindex(ifname); 4184 struct nl_msg *msg; 4185 int ret; 4186 4187 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d " 4188 "set_tx=%d seq_len=%lu key_len=%lu", 4189 __func__, ifindex, alg, addr, key_idx, set_tx, 4190 (unsigned long) seq_len, (unsigned long) key_len); 4191 #ifdef CONFIG_TDLS 4192 if (key_idx == -1) 4193 key_idx = 0; 4194 #endif /* CONFIG_TDLS */ 4195 4196 msg = nlmsg_alloc(); 4197 if (!msg) 4198 return -ENOMEM; 4199 4200 if (alg == WPA_ALG_NONE) { 4201 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY); 4202 } else { 4203 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY); 4204 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key); 4205 switch (alg) { 4206 case WPA_ALG_WEP: 4207 if (key_len == 5) 4208 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4209 WLAN_CIPHER_SUITE_WEP40); 4210 else 4211 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4212 WLAN_CIPHER_SUITE_WEP104); 4213 break; 4214 case WPA_ALG_TKIP: 4215 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4216 WLAN_CIPHER_SUITE_TKIP); 4217 break; 4218 case WPA_ALG_CCMP: 4219 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4220 WLAN_CIPHER_SUITE_CCMP); 4221 break; 4222 case WPA_ALG_GCMP: 4223 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4224 WLAN_CIPHER_SUITE_GCMP); 4225 break; 4226 case WPA_ALG_IGTK: 4227 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4228 WLAN_CIPHER_SUITE_AES_CMAC); 4229 break; 4230 default: 4231 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 4232 "algorithm %d", __func__, alg); 4233 nlmsg_free(msg); 4234 return -1; 4235 } 4236 } 4237 4238 if (seq && seq_len) 4239 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq); 4240 4241 if (addr && !is_broadcast_ether_addr(addr)) { 4242 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr)); 4243 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 4244 4245 if (alg != WPA_ALG_WEP && key_idx && !set_tx) { 4246 wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK"); 4247 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, 4248 NL80211_KEYTYPE_GROUP); 4249 } 4250 } else if (addr && is_broadcast_ether_addr(addr)) { 4251 struct nl_msg *types; 4252 int err; 4253 wpa_printf(MSG_DEBUG, " broadcast key"); 4254 types = nlmsg_alloc(); 4255 if (!types) 4256 goto nla_put_failure; 4257 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 4258 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 4259 types); 4260 nlmsg_free(types); 4261 if (err) 4262 goto nla_put_failure; 4263 } 4264 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 4265 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 4266 4267 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4268 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE) 4269 ret = 0; 4270 if (ret) 4271 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)", 4272 ret, strerror(-ret)); 4273 4274 /* 4275 * If we failed or don't need to set the default TX key (below), 4276 * we're done here. 4277 */ 4278 if (ret || !set_tx || alg == WPA_ALG_NONE) 4279 return ret; 4280 if (is_ap_interface(drv->nlmode) && addr && 4281 !is_broadcast_ether_addr(addr)) 4282 return ret; 4283 4284 msg = nlmsg_alloc(); 4285 if (!msg) 4286 return -ENOMEM; 4287 4288 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY); 4289 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 4290 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 4291 if (alg == WPA_ALG_IGTK) 4292 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT); 4293 else 4294 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT); 4295 if (addr && is_broadcast_ether_addr(addr)) { 4296 struct nl_msg *types; 4297 int err; 4298 types = nlmsg_alloc(); 4299 if (!types) 4300 goto nla_put_failure; 4301 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 4302 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 4303 types); 4304 nlmsg_free(types); 4305 if (err) 4306 goto nla_put_failure; 4307 } else if (addr) { 4308 struct nl_msg *types; 4309 int err; 4310 types = nlmsg_alloc(); 4311 if (!types) 4312 goto nla_put_failure; 4313 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_UNICAST); 4314 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 4315 types); 4316 nlmsg_free(types); 4317 if (err) 4318 goto nla_put_failure; 4319 } 4320 4321 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4322 if (ret == -ENOENT) 4323 ret = 0; 4324 if (ret) 4325 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; " 4326 "err=%d %s)", ret, strerror(-ret)); 4327 return ret; 4328 4329 nla_put_failure: 4330 nlmsg_free(msg); 4331 return -ENOBUFS; 4332 } 4333 4334 4335 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg, 4336 int key_idx, int defkey, 4337 const u8 *seq, size_t seq_len, 4338 const u8 *key, size_t key_len) 4339 { 4340 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY); 4341 if (!key_attr) 4342 return -1; 4343 4344 if (defkey && alg == WPA_ALG_IGTK) 4345 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT); 4346 else if (defkey) 4347 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 4348 4349 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx); 4350 4351 switch (alg) { 4352 case WPA_ALG_WEP: 4353 if (key_len == 5) 4354 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4355 WLAN_CIPHER_SUITE_WEP40); 4356 else 4357 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4358 WLAN_CIPHER_SUITE_WEP104); 4359 break; 4360 case WPA_ALG_TKIP: 4361 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP); 4362 break; 4363 case WPA_ALG_CCMP: 4364 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP); 4365 break; 4366 case WPA_ALG_GCMP: 4367 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_GCMP); 4368 break; 4369 case WPA_ALG_IGTK: 4370 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4371 WLAN_CIPHER_SUITE_AES_CMAC); 4372 break; 4373 default: 4374 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 4375 "algorithm %d", __func__, alg); 4376 return -1; 4377 } 4378 4379 if (seq && seq_len) 4380 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq); 4381 4382 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key); 4383 4384 nla_nest_end(msg, key_attr); 4385 4386 return 0; 4387 nla_put_failure: 4388 return -1; 4389 } 4390 4391 4392 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params, 4393 struct nl_msg *msg) 4394 { 4395 int i, privacy = 0; 4396 struct nlattr *nl_keys, *nl_key; 4397 4398 for (i = 0; i < 4; i++) { 4399 if (!params->wep_key[i]) 4400 continue; 4401 privacy = 1; 4402 break; 4403 } 4404 if (params->wps == WPS_MODE_PRIVACY) 4405 privacy = 1; 4406 if (params->pairwise_suite && 4407 params->pairwise_suite != WPA_CIPHER_NONE) 4408 privacy = 1; 4409 4410 if (!privacy) 4411 return 0; 4412 4413 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 4414 4415 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS); 4416 if (!nl_keys) 4417 goto nla_put_failure; 4418 4419 for (i = 0; i < 4; i++) { 4420 if (!params->wep_key[i]) 4421 continue; 4422 4423 nl_key = nla_nest_start(msg, i); 4424 if (!nl_key) 4425 goto nla_put_failure; 4426 4427 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i], 4428 params->wep_key[i]); 4429 if (params->wep_key_len[i] == 5) 4430 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4431 WLAN_CIPHER_SUITE_WEP40); 4432 else 4433 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4434 WLAN_CIPHER_SUITE_WEP104); 4435 4436 NLA_PUT_U8(msg, NL80211_KEY_IDX, i); 4437 4438 if (i == params->wep_tx_keyidx) 4439 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 4440 4441 nla_nest_end(msg, nl_key); 4442 } 4443 nla_nest_end(msg, nl_keys); 4444 4445 return 0; 4446 4447 nla_put_failure: 4448 return -ENOBUFS; 4449 } 4450 4451 4452 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 4453 const u8 *addr, int cmd, u16 reason_code, 4454 int local_state_change) 4455 { 4456 int ret = -1; 4457 struct nl_msg *msg; 4458 4459 msg = nlmsg_alloc(); 4460 if (!msg) 4461 return -1; 4462 4463 nl80211_cmd(drv, msg, 0, cmd); 4464 4465 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4466 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code); 4467 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 4468 if (local_state_change) 4469 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 4470 4471 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4472 msg = NULL; 4473 if (ret) { 4474 wpa_dbg(drv->ctx, MSG_DEBUG, 4475 "nl80211: MLME command failed: reason=%u ret=%d (%s)", 4476 reason_code, ret, strerror(-ret)); 4477 goto nla_put_failure; 4478 } 4479 ret = 0; 4480 4481 nla_put_failure: 4482 nlmsg_free(msg); 4483 return ret; 4484 } 4485 4486 4487 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv, 4488 const u8 *addr, int reason_code) 4489 { 4490 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)", 4491 __func__, MAC2STR(addr), reason_code); 4492 drv->associated = 0; 4493 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT, 4494 reason_code, 0); 4495 } 4496 4497 4498 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr, 4499 int reason_code) 4500 { 4501 struct i802_bss *bss = priv; 4502 struct wpa_driver_nl80211_data *drv = bss->drv; 4503 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) 4504 return wpa_driver_nl80211_disconnect(drv, addr, reason_code); 4505 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)", 4506 __func__, MAC2STR(addr), reason_code); 4507 drv->associated = 0; 4508 if (drv->nlmode == NL80211_IFTYPE_ADHOC) 4509 return nl80211_leave_ibss(drv); 4510 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE, 4511 reason_code, 0); 4512 } 4513 4514 4515 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr, 4516 int reason_code) 4517 { 4518 struct i802_bss *bss = priv; 4519 struct wpa_driver_nl80211_data *drv = bss->drv; 4520 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) 4521 return wpa_driver_nl80211_disconnect(drv, addr, reason_code); 4522 wpa_printf(MSG_DEBUG, "%s", __func__); 4523 drv->associated = 0; 4524 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE, 4525 reason_code, 0); 4526 } 4527 4528 4529 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv, 4530 struct wpa_driver_auth_params *params) 4531 { 4532 int i; 4533 4534 drv->auth_freq = params->freq; 4535 drv->auth_alg = params->auth_alg; 4536 drv->auth_wep_tx_keyidx = params->wep_tx_keyidx; 4537 drv->auth_local_state_change = params->local_state_change; 4538 drv->auth_p2p = params->p2p; 4539 4540 if (params->bssid) 4541 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN); 4542 else 4543 os_memset(drv->auth_bssid_, 0, ETH_ALEN); 4544 4545 if (params->ssid) { 4546 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len); 4547 drv->auth_ssid_len = params->ssid_len; 4548 } else 4549 drv->auth_ssid_len = 0; 4550 4551 4552 os_free(drv->auth_ie); 4553 drv->auth_ie = NULL; 4554 drv->auth_ie_len = 0; 4555 if (params->ie) { 4556 drv->auth_ie = os_malloc(params->ie_len); 4557 if (drv->auth_ie) { 4558 os_memcpy(drv->auth_ie, params->ie, params->ie_len); 4559 drv->auth_ie_len = params->ie_len; 4560 } 4561 } 4562 4563 for (i = 0; i < 4; i++) { 4564 if (params->wep_key[i] && params->wep_key_len[i] && 4565 params->wep_key_len[i] <= 16) { 4566 os_memcpy(drv->auth_wep_key[i], params->wep_key[i], 4567 params->wep_key_len[i]); 4568 drv->auth_wep_key_len[i] = params->wep_key_len[i]; 4569 } else 4570 drv->auth_wep_key_len[i] = 0; 4571 } 4572 } 4573 4574 4575 static int wpa_driver_nl80211_authenticate( 4576 void *priv, struct wpa_driver_auth_params *params) 4577 { 4578 struct i802_bss *bss = priv; 4579 struct wpa_driver_nl80211_data *drv = bss->drv; 4580 int ret = -1, i; 4581 struct nl_msg *msg; 4582 enum nl80211_auth_type type; 4583 enum nl80211_iftype nlmode; 4584 int count = 0; 4585 int is_retry; 4586 4587 is_retry = drv->retry_auth; 4588 drv->retry_auth = 0; 4589 4590 drv->associated = 0; 4591 os_memset(drv->auth_bssid, 0, ETH_ALEN); 4592 /* FIX: IBSS mode */ 4593 nlmode = params->p2p ? 4594 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 4595 if (drv->nlmode != nlmode && 4596 wpa_driver_nl80211_set_mode(priv, nlmode) < 0) 4597 return -1; 4598 4599 retry: 4600 msg = nlmsg_alloc(); 4601 if (!msg) 4602 return -1; 4603 4604 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)", 4605 drv->ifindex); 4606 4607 nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE); 4608 4609 for (i = 0; i < 4; i++) { 4610 if (!params->wep_key[i]) 4611 continue; 4612 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP, 4613 NULL, i, 4614 i == params->wep_tx_keyidx, NULL, 0, 4615 params->wep_key[i], 4616 params->wep_key_len[i]); 4617 if (params->wep_tx_keyidx != i) 4618 continue; 4619 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0, 4620 params->wep_key[i], params->wep_key_len[i])) { 4621 nlmsg_free(msg); 4622 return -1; 4623 } 4624 } 4625 4626 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4627 if (params->bssid) { 4628 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 4629 MAC2STR(params->bssid)); 4630 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 4631 } 4632 if (params->freq) { 4633 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 4634 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 4635 } 4636 if (params->ssid) { 4637 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 4638 params->ssid, params->ssid_len); 4639 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 4640 params->ssid); 4641 } 4642 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len); 4643 if (params->ie) 4644 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie); 4645 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 4646 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 4647 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 4648 type = NL80211_AUTHTYPE_SHARED_KEY; 4649 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 4650 type = NL80211_AUTHTYPE_NETWORK_EAP; 4651 else if (params->auth_alg & WPA_AUTH_ALG_FT) 4652 type = NL80211_AUTHTYPE_FT; 4653 else 4654 goto nla_put_failure; 4655 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 4656 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 4657 if (params->local_state_change) { 4658 wpa_printf(MSG_DEBUG, " * Local state change only"); 4659 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 4660 } 4661 4662 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4663 msg = NULL; 4664 if (ret) { 4665 wpa_dbg(drv->ctx, MSG_DEBUG, 4666 "nl80211: MLME command failed (auth): ret=%d (%s)", 4667 ret, strerror(-ret)); 4668 count++; 4669 if (ret == -EALREADY && count == 1 && params->bssid && 4670 !params->local_state_change) { 4671 /* 4672 * mac80211 does not currently accept new 4673 * authentication if we are already authenticated. As a 4674 * workaround, force deauthentication and try again. 4675 */ 4676 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication " 4677 "after forced deauthentication"); 4678 wpa_driver_nl80211_deauthenticate( 4679 bss, params->bssid, 4680 WLAN_REASON_PREV_AUTH_NOT_VALID); 4681 nlmsg_free(msg); 4682 goto retry; 4683 } 4684 4685 if (ret == -ENOENT && params->freq && !is_retry) { 4686 /* 4687 * cfg80211 has likely expired the BSS entry even 4688 * though it was previously available in our internal 4689 * BSS table. To recover quickly, start a single 4690 * channel scan on the specified channel. 4691 */ 4692 struct wpa_driver_scan_params scan; 4693 int freqs[2]; 4694 4695 os_memset(&scan, 0, sizeof(scan)); 4696 scan.num_ssids = 1; 4697 if (params->ssid) { 4698 scan.ssids[0].ssid = params->ssid; 4699 scan.ssids[0].ssid_len = params->ssid_len; 4700 } 4701 freqs[0] = params->freq; 4702 freqs[1] = 0; 4703 scan.freqs = freqs; 4704 wpa_printf(MSG_DEBUG, "nl80211: Trigger single " 4705 "channel scan to refresh cfg80211 BSS " 4706 "entry"); 4707 ret = wpa_driver_nl80211_scan(bss, &scan); 4708 if (ret == 0) { 4709 nl80211_copy_auth_params(drv, params); 4710 drv->scan_for_auth = 1; 4711 } 4712 } else if (is_retry) { 4713 /* 4714 * Need to indicate this with an event since the return 4715 * value from the retry is not delivered to core code. 4716 */ 4717 union wpa_event_data event; 4718 wpa_printf(MSG_DEBUG, "nl80211: Authentication retry " 4719 "failed"); 4720 os_memset(&event, 0, sizeof(event)); 4721 os_memcpy(event.timeout_event.addr, drv->auth_bssid_, 4722 ETH_ALEN); 4723 wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT, 4724 &event); 4725 } 4726 4727 goto nla_put_failure; 4728 } 4729 ret = 0; 4730 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send " 4731 "successfully"); 4732 4733 nla_put_failure: 4734 nlmsg_free(msg); 4735 return ret; 4736 } 4737 4738 4739 static int wpa_driver_nl80211_authenticate_retry( 4740 struct wpa_driver_nl80211_data *drv) 4741 { 4742 struct wpa_driver_auth_params params; 4743 struct i802_bss *bss = &drv->first_bss; 4744 int i; 4745 4746 wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again"); 4747 4748 os_memset(¶ms, 0, sizeof(params)); 4749 params.freq = drv->auth_freq; 4750 params.auth_alg = drv->auth_alg; 4751 params.wep_tx_keyidx = drv->auth_wep_tx_keyidx; 4752 params.local_state_change = drv->auth_local_state_change; 4753 params.p2p = drv->auth_p2p; 4754 4755 if (!is_zero_ether_addr(drv->auth_bssid_)) 4756 params.bssid = drv->auth_bssid_; 4757 4758 if (drv->auth_ssid_len) { 4759 params.ssid = drv->auth_ssid; 4760 params.ssid_len = drv->auth_ssid_len; 4761 } 4762 4763 params.ie = drv->auth_ie; 4764 params.ie_len = drv->auth_ie_len; 4765 4766 for (i = 0; i < 4; i++) { 4767 if (drv->auth_wep_key_len[i]) { 4768 params.wep_key[i] = drv->auth_wep_key[i]; 4769 params.wep_key_len[i] = drv->auth_wep_key_len[i]; 4770 } 4771 } 4772 4773 drv->retry_auth = 1; 4774 return wpa_driver_nl80211_authenticate(bss, ¶ms); 4775 } 4776 4777 4778 struct phy_info_arg { 4779 u16 *num_modes; 4780 struct hostapd_hw_modes *modes; 4781 }; 4782 4783 static int phy_info_handler(struct nl_msg *msg, void *arg) 4784 { 4785 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 4786 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 4787 struct phy_info_arg *phy_info = arg; 4788 4789 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1]; 4790 4791 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1]; 4792 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 4793 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, 4794 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, 4795 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG }, 4796 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG }, 4797 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, 4798 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 }, 4799 }; 4800 4801 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1]; 4802 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = { 4803 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 }, 4804 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG }, 4805 }; 4806 4807 struct nlattr *nl_band; 4808 struct nlattr *nl_freq; 4809 struct nlattr *nl_rate; 4810 int rem_band, rem_freq, rem_rate; 4811 struct hostapd_hw_modes *mode; 4812 int idx, mode_is_set; 4813 4814 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 4815 genlmsg_attrlen(gnlh, 0), NULL); 4816 4817 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS]) 4818 return NL_SKIP; 4819 4820 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) { 4821 mode = os_realloc_array(phy_info->modes, 4822 *phy_info->num_modes + 1, 4823 sizeof(*mode)); 4824 if (!mode) 4825 return NL_SKIP; 4826 phy_info->modes = mode; 4827 4828 mode_is_set = 0; 4829 4830 mode = &phy_info->modes[*(phy_info->num_modes)]; 4831 memset(mode, 0, sizeof(*mode)); 4832 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN; 4833 *(phy_info->num_modes) += 1; 4834 4835 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band), 4836 nla_len(nl_band), NULL); 4837 4838 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) { 4839 mode->ht_capab = nla_get_u16( 4840 tb_band[NL80211_BAND_ATTR_HT_CAPA]); 4841 } 4842 4843 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) { 4844 mode->a_mpdu_params |= nla_get_u8( 4845 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) & 4846 0x03; 4847 } 4848 4849 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) { 4850 mode->a_mpdu_params |= nla_get_u8( 4851 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) << 4852 2; 4853 } 4854 4855 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] && 4856 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) { 4857 u8 *mcs; 4858 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]); 4859 os_memcpy(mode->mcs_set, mcs, 16); 4860 } 4861 4862 if (tb_band[NL80211_BAND_ATTR_VHT_CAPA]) { 4863 mode->vht_capab = nla_get_u32( 4864 tb_band[NL80211_BAND_ATTR_VHT_CAPA]); 4865 } 4866 4867 if (tb_band[NL80211_BAND_ATTR_VHT_MCS_SET] && 4868 nla_len(tb_band[NL80211_BAND_ATTR_VHT_MCS_SET])) { 4869 u8 *mcs; 4870 mcs = nla_data(tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]); 4871 os_memcpy(mode->vht_mcs_set, mcs, 8); 4872 } 4873 4874 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) { 4875 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq), 4876 nla_len(nl_freq), freq_policy); 4877 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 4878 continue; 4879 mode->num_channels++; 4880 } 4881 4882 mode->channels = os_calloc(mode->num_channels, 4883 sizeof(struct hostapd_channel_data)); 4884 if (!mode->channels) 4885 return NL_SKIP; 4886 4887 idx = 0; 4888 4889 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) { 4890 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq), 4891 nla_len(nl_freq), freq_policy); 4892 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 4893 continue; 4894 4895 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]); 4896 mode->channels[idx].flag = 0; 4897 4898 if (!mode_is_set) { 4899 /* crude heuristic */ 4900 if (mode->channels[idx].freq < 4000) 4901 mode->mode = HOSTAPD_MODE_IEEE80211B; 4902 else 4903 mode->mode = HOSTAPD_MODE_IEEE80211A; 4904 mode_is_set = 1; 4905 } 4906 4907 /* crude heuristic */ 4908 if (mode->channels[idx].freq < 4000) 4909 if (mode->channels[idx].freq == 2484) 4910 mode->channels[idx].chan = 14; 4911 else 4912 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5; 4913 else 4914 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000; 4915 4916 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 4917 mode->channels[idx].flag |= 4918 HOSTAPD_CHAN_DISABLED; 4919 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN]) 4920 mode->channels[idx].flag |= 4921 HOSTAPD_CHAN_PASSIVE_SCAN; 4922 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS]) 4923 mode->channels[idx].flag |= 4924 HOSTAPD_CHAN_NO_IBSS; 4925 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR]) 4926 mode->channels[idx].flag |= 4927 HOSTAPD_CHAN_RADAR; 4928 4929 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] && 4930 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 4931 mode->channels[idx].max_tx_power = 4932 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100; 4933 4934 idx++; 4935 } 4936 4937 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) { 4938 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate), 4939 nla_len(nl_rate), rate_policy); 4940 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 4941 continue; 4942 mode->num_rates++; 4943 } 4944 4945 mode->rates = os_calloc(mode->num_rates, sizeof(int)); 4946 if (!mode->rates) 4947 return NL_SKIP; 4948 4949 idx = 0; 4950 4951 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) { 4952 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate), 4953 nla_len(nl_rate), rate_policy); 4954 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 4955 continue; 4956 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]); 4957 4958 /* crude heuristic */ 4959 if (mode->mode == HOSTAPD_MODE_IEEE80211B && 4960 mode->rates[idx] > 200) 4961 mode->mode = HOSTAPD_MODE_IEEE80211G; 4962 4963 idx++; 4964 } 4965 } 4966 4967 return NL_SKIP; 4968 } 4969 4970 static struct hostapd_hw_modes * 4971 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes) 4972 { 4973 u16 m; 4974 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode; 4975 int i, mode11g_idx = -1; 4976 4977 /* If only 802.11g mode is included, use it to construct matching 4978 * 802.11b mode data. */ 4979 4980 for (m = 0; m < *num_modes; m++) { 4981 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B) 4982 return modes; /* 802.11b already included */ 4983 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G) 4984 mode11g_idx = m; 4985 } 4986 4987 if (mode11g_idx < 0) 4988 return modes; /* 2.4 GHz band not supported at all */ 4989 4990 nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes)); 4991 if (nmodes == NULL) 4992 return modes; /* Could not add 802.11b mode */ 4993 4994 mode = &nmodes[*num_modes]; 4995 os_memset(mode, 0, sizeof(*mode)); 4996 (*num_modes)++; 4997 modes = nmodes; 4998 4999 mode->mode = HOSTAPD_MODE_IEEE80211B; 5000 5001 mode11g = &modes[mode11g_idx]; 5002 mode->num_channels = mode11g->num_channels; 5003 mode->channels = os_malloc(mode11g->num_channels * 5004 sizeof(struct hostapd_channel_data)); 5005 if (mode->channels == NULL) { 5006 (*num_modes)--; 5007 return modes; /* Could not add 802.11b mode */ 5008 } 5009 os_memcpy(mode->channels, mode11g->channels, 5010 mode11g->num_channels * sizeof(struct hostapd_channel_data)); 5011 5012 mode->num_rates = 0; 5013 mode->rates = os_malloc(4 * sizeof(int)); 5014 if (mode->rates == NULL) { 5015 os_free(mode->channels); 5016 (*num_modes)--; 5017 return modes; /* Could not add 802.11b mode */ 5018 } 5019 5020 for (i = 0; i < mode11g->num_rates; i++) { 5021 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 && 5022 mode11g->rates[i] != 55 && mode11g->rates[i] != 110) 5023 continue; 5024 mode->rates[mode->num_rates] = mode11g->rates[i]; 5025 mode->num_rates++; 5026 if (mode->num_rates == 4) 5027 break; 5028 } 5029 5030 if (mode->num_rates == 0) { 5031 os_free(mode->channels); 5032 os_free(mode->rates); 5033 (*num_modes)--; 5034 return modes; /* No 802.11b rates */ 5035 } 5036 5037 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g " 5038 "information"); 5039 5040 return modes; 5041 } 5042 5043 5044 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start, 5045 int end) 5046 { 5047 int c; 5048 5049 for (c = 0; c < mode->num_channels; c++) { 5050 struct hostapd_channel_data *chan = &mode->channels[c]; 5051 if (chan->freq - 10 >= start && chan->freq + 10 <= end) 5052 chan->flag |= HOSTAPD_CHAN_HT40; 5053 } 5054 } 5055 5056 5057 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start, 5058 int end) 5059 { 5060 int c; 5061 5062 for (c = 0; c < mode->num_channels; c++) { 5063 struct hostapd_channel_data *chan = &mode->channels[c]; 5064 if (!(chan->flag & HOSTAPD_CHAN_HT40)) 5065 continue; 5066 if (chan->freq - 30 >= start && chan->freq - 10 <= end) 5067 chan->flag |= HOSTAPD_CHAN_HT40MINUS; 5068 if (chan->freq + 10 >= start && chan->freq + 30 <= end) 5069 chan->flag |= HOSTAPD_CHAN_HT40PLUS; 5070 } 5071 } 5072 5073 5074 static void nl80211_reg_rule_ht40(struct nlattr *tb[], 5075 struct phy_info_arg *results) 5076 { 5077 u32 start, end, max_bw; 5078 u16 m; 5079 5080 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 5081 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 5082 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 5083 return; 5084 5085 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 5086 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 5087 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 5088 5089 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz", 5090 start, end, max_bw); 5091 if (max_bw < 40) 5092 return; 5093 5094 for (m = 0; m < *results->num_modes; m++) { 5095 if (!(results->modes[m].ht_capab & 5096 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 5097 continue; 5098 nl80211_set_ht40_mode(&results->modes[m], start, end); 5099 } 5100 } 5101 5102 5103 static void nl80211_reg_rule_sec(struct nlattr *tb[], 5104 struct phy_info_arg *results) 5105 { 5106 u32 start, end, max_bw; 5107 u16 m; 5108 5109 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 5110 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 5111 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 5112 return; 5113 5114 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 5115 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 5116 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 5117 5118 if (max_bw < 20) 5119 return; 5120 5121 for (m = 0; m < *results->num_modes; m++) { 5122 if (!(results->modes[m].ht_capab & 5123 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 5124 continue; 5125 nl80211_set_ht40_mode_sec(&results->modes[m], start, end); 5126 } 5127 } 5128 5129 5130 static int nl80211_get_reg(struct nl_msg *msg, void *arg) 5131 { 5132 struct phy_info_arg *results = arg; 5133 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 5134 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 5135 struct nlattr *nl_rule; 5136 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1]; 5137 int rem_rule; 5138 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 5139 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 5140 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 5141 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 5142 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 5143 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 5144 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 5145 }; 5146 5147 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5148 genlmsg_attrlen(gnlh, 0), NULL); 5149 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] || 5150 !tb_msg[NL80211_ATTR_REG_RULES]) { 5151 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information " 5152 "available"); 5153 return NL_SKIP; 5154 } 5155 5156 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s", 5157 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2])); 5158 5159 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 5160 { 5161 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 5162 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 5163 nl80211_reg_rule_ht40(tb_rule, results); 5164 } 5165 5166 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 5167 { 5168 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 5169 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 5170 nl80211_reg_rule_sec(tb_rule, results); 5171 } 5172 5173 return NL_SKIP; 5174 } 5175 5176 5177 static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv, 5178 struct phy_info_arg *results) 5179 { 5180 struct nl_msg *msg; 5181 5182 msg = nlmsg_alloc(); 5183 if (!msg) 5184 return -ENOMEM; 5185 5186 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG); 5187 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results); 5188 } 5189 5190 5191 static struct hostapd_hw_modes * 5192 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags) 5193 { 5194 struct i802_bss *bss = priv; 5195 struct wpa_driver_nl80211_data *drv = bss->drv; 5196 struct nl_msg *msg; 5197 struct phy_info_arg result = { 5198 .num_modes = num_modes, 5199 .modes = NULL, 5200 }; 5201 5202 *num_modes = 0; 5203 *flags = 0; 5204 5205 msg = nlmsg_alloc(); 5206 if (!msg) 5207 return NULL; 5208 5209 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 5210 5211 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5212 5213 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) { 5214 nl80211_set_ht40_flags(drv, &result); 5215 return wpa_driver_nl80211_add_11b(result.modes, num_modes); 5216 } 5217 msg = NULL; 5218 nla_put_failure: 5219 nlmsg_free(msg); 5220 return NULL; 5221 } 5222 5223 5224 static int wpa_driver_nl80211_send_mntr(struct wpa_driver_nl80211_data *drv, 5225 const void *data, size_t len, 5226 int encrypt, int noack) 5227 { 5228 __u8 rtap_hdr[] = { 5229 0x00, 0x00, /* radiotap version */ 5230 0x0e, 0x00, /* radiotap length */ 5231 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */ 5232 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */ 5233 0x00, /* padding */ 5234 0x00, 0x00, /* RX and TX flags to indicate that */ 5235 0x00, 0x00, /* this is the injected frame directly */ 5236 }; 5237 struct iovec iov[2] = { 5238 { 5239 .iov_base = &rtap_hdr, 5240 .iov_len = sizeof(rtap_hdr), 5241 }, 5242 { 5243 .iov_base = (void *) data, 5244 .iov_len = len, 5245 } 5246 }; 5247 struct msghdr msg = { 5248 .msg_name = NULL, 5249 .msg_namelen = 0, 5250 .msg_iov = iov, 5251 .msg_iovlen = 2, 5252 .msg_control = NULL, 5253 .msg_controllen = 0, 5254 .msg_flags = 0, 5255 }; 5256 int res; 5257 u16 txflags = 0; 5258 5259 if (encrypt) 5260 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP; 5261 5262 if (drv->monitor_sock < 0) { 5263 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available " 5264 "for %s", __func__); 5265 return -1; 5266 } 5267 5268 if (noack) 5269 txflags |= IEEE80211_RADIOTAP_F_TX_NOACK; 5270 *(le16 *) &rtap_hdr[12] = host_to_le16(txflags); 5271 5272 res = sendmsg(drv->monitor_sock, &msg, 0); 5273 if (res < 0) { 5274 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno)); 5275 return -1; 5276 } 5277 return 0; 5278 } 5279 5280 5281 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss, 5282 const void *data, size_t len, 5283 int encrypt, int noack, 5284 unsigned int freq, int no_cck, 5285 int offchanok, unsigned int wait_time) 5286 { 5287 struct wpa_driver_nl80211_data *drv = bss->drv; 5288 u64 cookie; 5289 5290 if (freq == 0) 5291 freq = bss->freq; 5292 5293 if (drv->use_monitor) 5294 return wpa_driver_nl80211_send_mntr(drv, data, len, 5295 encrypt, noack); 5296 5297 return nl80211_send_frame_cmd(bss, freq, wait_time, data, len, 5298 &cookie, no_cck, noack, offchanok); 5299 } 5300 5301 5302 static int wpa_driver_nl80211_send_mlme_freq(struct i802_bss *bss, 5303 const u8 *data, 5304 size_t data_len, int noack, 5305 unsigned int freq, int no_cck, 5306 int offchanok, 5307 unsigned int wait_time) 5308 { 5309 struct wpa_driver_nl80211_data *drv = bss->drv; 5310 struct ieee80211_mgmt *mgmt; 5311 int encrypt = 1; 5312 u16 fc; 5313 5314 mgmt = (struct ieee80211_mgmt *) data; 5315 fc = le_to_host16(mgmt->frame_control); 5316 5317 if (is_sta_interface(drv->nlmode) && 5318 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 5319 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) { 5320 /* 5321 * The use of last_mgmt_freq is a bit of a hack, 5322 * but it works due to the single-threaded nature 5323 * of wpa_supplicant. 5324 */ 5325 if (freq == 0) 5326 freq = drv->last_mgmt_freq; 5327 return nl80211_send_frame_cmd(bss, freq, 0, 5328 data, data_len, NULL, 1, noack, 5329 1); 5330 } 5331 5332 if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) { 5333 if (freq == 0) 5334 freq = bss->freq; 5335 return nl80211_send_frame_cmd(bss, freq, 5336 (int) freq == bss->freq ? 0 : 5337 wait_time, 5338 data, data_len, 5339 &drv->send_action_cookie, 5340 no_cck, noack, offchanok); 5341 } 5342 5343 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 5344 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) { 5345 /* 5346 * Only one of the authentication frame types is encrypted. 5347 * In order for static WEP encryption to work properly (i.e., 5348 * to not encrypt the frame), we need to tell mac80211 about 5349 * the frames that must not be encrypted. 5350 */ 5351 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg); 5352 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction); 5353 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3) 5354 encrypt = 0; 5355 } 5356 5357 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 5358 noack, freq, no_cck, offchanok, 5359 wait_time); 5360 } 5361 5362 5363 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data, 5364 size_t data_len, int noack) 5365 { 5366 struct i802_bss *bss = priv; 5367 return wpa_driver_nl80211_send_mlme_freq(bss, data, data_len, noack, 5368 0, 0, 0, 0); 5369 } 5370 5371 5372 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble, 5373 int slot, int ht_opmode, int ap_isolate, 5374 int *basic_rates) 5375 { 5376 struct wpa_driver_nl80211_data *drv = bss->drv; 5377 struct nl_msg *msg; 5378 5379 msg = nlmsg_alloc(); 5380 if (!msg) 5381 return -ENOMEM; 5382 5383 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS); 5384 5385 if (cts >= 0) 5386 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts); 5387 if (preamble >= 0) 5388 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble); 5389 if (slot >= 0) 5390 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot); 5391 if (ht_opmode >= 0) 5392 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode); 5393 if (ap_isolate >= 0) 5394 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate); 5395 5396 if (basic_rates) { 5397 u8 rates[NL80211_MAX_SUPP_RATES]; 5398 u8 rates_len = 0; 5399 int i; 5400 5401 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; 5402 i++) 5403 rates[rates_len++] = basic_rates[i] / 5; 5404 5405 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates); 5406 } 5407 5408 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 5409 5410 return send_and_recv_msgs(drv, msg, NULL, NULL); 5411 nla_put_failure: 5412 nlmsg_free(msg); 5413 return -ENOBUFS; 5414 } 5415 5416 5417 static int wpa_driver_nl80211_set_ap(void *priv, 5418 struct wpa_driver_ap_params *params) 5419 { 5420 struct i802_bss *bss = priv; 5421 struct wpa_driver_nl80211_data *drv = bss->drv; 5422 struct nl_msg *msg; 5423 u8 cmd = NL80211_CMD_NEW_BEACON; 5424 int ret; 5425 int beacon_set; 5426 int ifindex = if_nametoindex(bss->ifname); 5427 int num_suites; 5428 u32 suites[10]; 5429 u32 ver; 5430 5431 beacon_set = bss->beacon_set; 5432 5433 msg = nlmsg_alloc(); 5434 if (!msg) 5435 return -ENOMEM; 5436 5437 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)", 5438 beacon_set); 5439 if (beacon_set) 5440 cmd = NL80211_CMD_SET_BEACON; 5441 5442 nl80211_cmd(drv, msg, 0, cmd); 5443 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head); 5444 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail); 5445 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 5446 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int); 5447 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period); 5448 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 5449 params->ssid); 5450 if (params->proberesp && params->proberesp_len) 5451 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len, 5452 params->proberesp); 5453 switch (params->hide_ssid) { 5454 case NO_SSID_HIDING: 5455 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5456 NL80211_HIDDEN_SSID_NOT_IN_USE); 5457 break; 5458 case HIDDEN_SSID_ZERO_LEN: 5459 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5460 NL80211_HIDDEN_SSID_ZERO_LEN); 5461 break; 5462 case HIDDEN_SSID_ZERO_CONTENTS: 5463 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5464 NL80211_HIDDEN_SSID_ZERO_CONTENTS); 5465 break; 5466 } 5467 if (params->privacy) 5468 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 5469 if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) == 5470 (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) { 5471 /* Leave out the attribute */ 5472 } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) 5473 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 5474 NL80211_AUTHTYPE_SHARED_KEY); 5475 else 5476 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 5477 NL80211_AUTHTYPE_OPEN_SYSTEM); 5478 5479 ver = 0; 5480 if (params->wpa_version & WPA_PROTO_WPA) 5481 ver |= NL80211_WPA_VERSION_1; 5482 if (params->wpa_version & WPA_PROTO_RSN) 5483 ver |= NL80211_WPA_VERSION_2; 5484 if (ver) 5485 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 5486 5487 num_suites = 0; 5488 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X) 5489 suites[num_suites++] = WLAN_AKM_SUITE_8021X; 5490 if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK) 5491 suites[num_suites++] = WLAN_AKM_SUITE_PSK; 5492 if (num_suites) { 5493 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES, 5494 num_suites * sizeof(u32), suites); 5495 } 5496 5497 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X && 5498 params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40)) 5499 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT); 5500 5501 num_suites = 0; 5502 if (params->pairwise_ciphers & WPA_CIPHER_CCMP) 5503 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP; 5504 if (params->pairwise_ciphers & WPA_CIPHER_GCMP) 5505 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP; 5506 if (params->pairwise_ciphers & WPA_CIPHER_TKIP) 5507 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP; 5508 if (params->pairwise_ciphers & WPA_CIPHER_WEP104) 5509 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104; 5510 if (params->pairwise_ciphers & WPA_CIPHER_WEP40) 5511 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40; 5512 if (num_suites) { 5513 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, 5514 num_suites * sizeof(u32), suites); 5515 } 5516 5517 switch (params->group_cipher) { 5518 case WPA_CIPHER_CCMP: 5519 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5520 WLAN_CIPHER_SUITE_CCMP); 5521 break; 5522 case WPA_CIPHER_GCMP: 5523 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5524 WLAN_CIPHER_SUITE_GCMP); 5525 break; 5526 case WPA_CIPHER_TKIP: 5527 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5528 WLAN_CIPHER_SUITE_TKIP); 5529 break; 5530 case WPA_CIPHER_WEP104: 5531 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5532 WLAN_CIPHER_SUITE_WEP104); 5533 break; 5534 case WPA_CIPHER_WEP40: 5535 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5536 WLAN_CIPHER_SUITE_WEP40); 5537 break; 5538 } 5539 5540 if (params->beacon_ies) { 5541 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies), 5542 wpabuf_head(params->beacon_ies)); 5543 } 5544 if (params->proberesp_ies) { 5545 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP, 5546 wpabuf_len(params->proberesp_ies), 5547 wpabuf_head(params->proberesp_ies)); 5548 } 5549 if (params->assocresp_ies) { 5550 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP, 5551 wpabuf_len(params->assocresp_ies), 5552 wpabuf_head(params->assocresp_ies)); 5553 } 5554 5555 if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER) { 5556 NLA_PUT_U16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT, 5557 params->ap_max_inactivity); 5558 } 5559 5560 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5561 if (ret) { 5562 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)", 5563 ret, strerror(-ret)); 5564 } else { 5565 bss->beacon_set = 1; 5566 nl80211_set_bss(bss, params->cts_protect, params->preamble, 5567 params->short_slot_time, params->ht_opmode, 5568 params->isolate, params->basic_rates); 5569 } 5570 return ret; 5571 nla_put_failure: 5572 nlmsg_free(msg); 5573 return -ENOBUFS; 5574 } 5575 5576 5577 static int wpa_driver_nl80211_set_freq(struct i802_bss *bss, 5578 int freq, int ht_enabled, 5579 int sec_channel_offset) 5580 { 5581 struct wpa_driver_nl80211_data *drv = bss->drv; 5582 struct nl_msg *msg; 5583 int ret; 5584 5585 wpa_printf(MSG_DEBUG, "nl80211: Set freq %d (ht_enabled=%d " 5586 "sec_channel_offset=%d)", 5587 freq, ht_enabled, sec_channel_offset); 5588 msg = nlmsg_alloc(); 5589 if (!msg) 5590 return -1; 5591 5592 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 5593 5594 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5595 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 5596 if (ht_enabled) { 5597 switch (sec_channel_offset) { 5598 case -1: 5599 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 5600 NL80211_CHAN_HT40MINUS); 5601 break; 5602 case 1: 5603 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 5604 NL80211_CHAN_HT40PLUS); 5605 break; 5606 default: 5607 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 5608 NL80211_CHAN_HT20); 5609 break; 5610 } 5611 } 5612 5613 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5614 msg = NULL; 5615 if (ret == 0) { 5616 bss->freq = freq; 5617 return 0; 5618 } 5619 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): " 5620 "%d (%s)", freq, ret, strerror(-ret)); 5621 nla_put_failure: 5622 nlmsg_free(msg); 5623 return -1; 5624 } 5625 5626 5627 static u32 sta_flags_nl80211(int flags) 5628 { 5629 u32 f = 0; 5630 5631 if (flags & WPA_STA_AUTHORIZED) 5632 f |= BIT(NL80211_STA_FLAG_AUTHORIZED); 5633 if (flags & WPA_STA_WMM) 5634 f |= BIT(NL80211_STA_FLAG_WME); 5635 if (flags & WPA_STA_SHORT_PREAMBLE) 5636 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 5637 if (flags & WPA_STA_MFP) 5638 f |= BIT(NL80211_STA_FLAG_MFP); 5639 if (flags & WPA_STA_TDLS_PEER) 5640 f |= BIT(NL80211_STA_FLAG_TDLS_PEER); 5641 5642 return f; 5643 } 5644 5645 5646 static int wpa_driver_nl80211_sta_add(void *priv, 5647 struct hostapd_sta_add_params *params) 5648 { 5649 struct i802_bss *bss = priv; 5650 struct wpa_driver_nl80211_data *drv = bss->drv; 5651 struct nl_msg *msg, *wme = NULL; 5652 struct nl80211_sta_flag_update upd; 5653 int ret = -ENOBUFS; 5654 5655 if ((params->flags & WPA_STA_TDLS_PEER) && 5656 !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 5657 return -EOPNOTSUPP; 5658 5659 msg = nlmsg_alloc(); 5660 if (!msg) 5661 return -ENOMEM; 5662 5663 nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION : 5664 NL80211_CMD_NEW_STATION); 5665 5666 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 5667 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr); 5668 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len, 5669 params->supp_rates); 5670 if (!params->set) { 5671 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid); 5672 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL, 5673 params->listen_interval); 5674 } 5675 if (params->ht_capabilities) { 5676 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, 5677 sizeof(*params->ht_capabilities), 5678 params->ht_capabilities); 5679 } 5680 5681 os_memset(&upd, 0, sizeof(upd)); 5682 upd.mask = sta_flags_nl80211(params->flags); 5683 upd.set = upd.mask; 5684 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 5685 5686 if (params->flags & WPA_STA_WMM) { 5687 wme = nlmsg_alloc(); 5688 if (!wme) 5689 goto nla_put_failure; 5690 5691 NLA_PUT_U8(wme, NL80211_STA_WME_UAPSD_QUEUES, 5692 params->qosinfo & WMM_QOSINFO_STA_AC_MASK); 5693 NLA_PUT_U8(wme, NL80211_STA_WME_MAX_SP, 5694 (params->qosinfo > WMM_QOSINFO_STA_SP_SHIFT) & 5695 WMM_QOSINFO_STA_SP_MASK); 5696 if (nla_put_nested(msg, NL80211_ATTR_STA_WME, wme) < 0) 5697 goto nla_put_failure; 5698 } 5699 5700 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5701 msg = NULL; 5702 if (ret) 5703 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION " 5704 "result: %d (%s)", params->set ? "SET" : "NEW", ret, 5705 strerror(-ret)); 5706 if (ret == -EEXIST) 5707 ret = 0; 5708 nla_put_failure: 5709 nlmsg_free(wme); 5710 nlmsg_free(msg); 5711 return ret; 5712 } 5713 5714 5715 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr) 5716 { 5717 struct i802_bss *bss = priv; 5718 struct wpa_driver_nl80211_data *drv = bss->drv; 5719 struct nl_msg *msg; 5720 int ret; 5721 5722 msg = nlmsg_alloc(); 5723 if (!msg) 5724 return -ENOMEM; 5725 5726 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 5727 5728 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 5729 if_nametoindex(bss->ifname)); 5730 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 5731 5732 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5733 if (ret == -ENOENT) 5734 return 0; 5735 return ret; 5736 nla_put_failure: 5737 nlmsg_free(msg); 5738 return -ENOBUFS; 5739 } 5740 5741 5742 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, 5743 int ifidx) 5744 { 5745 struct nl_msg *msg; 5746 5747 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx); 5748 5749 /* stop listening for EAPOL on this interface */ 5750 del_ifidx(drv, ifidx); 5751 5752 msg = nlmsg_alloc(); 5753 if (!msg) 5754 goto nla_put_failure; 5755 5756 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE); 5757 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx); 5758 5759 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 5760 return; 5761 msg = NULL; 5762 nla_put_failure: 5763 nlmsg_free(msg); 5764 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx); 5765 } 5766 5767 5768 static const char * nl80211_iftype_str(enum nl80211_iftype mode) 5769 { 5770 switch (mode) { 5771 case NL80211_IFTYPE_ADHOC: 5772 return "ADHOC"; 5773 case NL80211_IFTYPE_STATION: 5774 return "STATION"; 5775 case NL80211_IFTYPE_AP: 5776 return "AP"; 5777 case NL80211_IFTYPE_MONITOR: 5778 return "MONITOR"; 5779 case NL80211_IFTYPE_P2P_CLIENT: 5780 return "P2P_CLIENT"; 5781 case NL80211_IFTYPE_P2P_GO: 5782 return "P2P_GO"; 5783 default: 5784 return "unknown"; 5785 } 5786 } 5787 5788 5789 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv, 5790 const char *ifname, 5791 enum nl80211_iftype iftype, 5792 const u8 *addr, int wds) 5793 { 5794 struct nl_msg *msg, *flags = NULL; 5795 int ifidx; 5796 int ret = -ENOBUFS; 5797 5798 wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)", 5799 iftype, nl80211_iftype_str(iftype)); 5800 5801 msg = nlmsg_alloc(); 5802 if (!msg) 5803 return -1; 5804 5805 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE); 5806 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5807 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname); 5808 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype); 5809 5810 if (iftype == NL80211_IFTYPE_MONITOR) { 5811 int err; 5812 5813 flags = nlmsg_alloc(); 5814 if (!flags) 5815 goto nla_put_failure; 5816 5817 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES); 5818 5819 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags); 5820 5821 nlmsg_free(flags); 5822 5823 if (err) 5824 goto nla_put_failure; 5825 } else if (wds) { 5826 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds); 5827 } 5828 5829 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5830 msg = NULL; 5831 if (ret) { 5832 nla_put_failure: 5833 nlmsg_free(msg); 5834 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)", 5835 ifname, ret, strerror(-ret)); 5836 return ret; 5837 } 5838 5839 ifidx = if_nametoindex(ifname); 5840 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d", 5841 ifname, ifidx); 5842 5843 if (ifidx <= 0) 5844 return -1; 5845 5846 /* start listening for EAPOL on this interface */ 5847 add_ifidx(drv, ifidx); 5848 5849 if (addr && iftype != NL80211_IFTYPE_MONITOR && 5850 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) { 5851 nl80211_remove_iface(drv, ifidx); 5852 return -1; 5853 } 5854 5855 return ifidx; 5856 } 5857 5858 5859 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv, 5860 const char *ifname, enum nl80211_iftype iftype, 5861 const u8 *addr, int wds) 5862 { 5863 int ret; 5864 5865 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds); 5866 5867 /* if error occurred and interface exists already */ 5868 if (ret == -ENFILE && if_nametoindex(ifname)) { 5869 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname); 5870 5871 /* Try to remove the interface that was already there. */ 5872 nl80211_remove_iface(drv, if_nametoindex(ifname)); 5873 5874 /* Try to create the interface again */ 5875 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, 5876 wds); 5877 } 5878 5879 if (ret >= 0 && is_p2p_interface(iftype)) 5880 nl80211_disable_11b_rates(drv, ret, 1); 5881 5882 return ret; 5883 } 5884 5885 5886 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok) 5887 { 5888 struct ieee80211_hdr *hdr; 5889 u16 fc; 5890 union wpa_event_data event; 5891 5892 hdr = (struct ieee80211_hdr *) buf; 5893 fc = le_to_host16(hdr->frame_control); 5894 5895 os_memset(&event, 0, sizeof(event)); 5896 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 5897 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 5898 event.tx_status.dst = hdr->addr1; 5899 event.tx_status.data = buf; 5900 event.tx_status.data_len = len; 5901 event.tx_status.ack = ok; 5902 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event); 5903 } 5904 5905 5906 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv, 5907 u8 *buf, size_t len) 5908 { 5909 struct ieee80211_hdr *hdr = (void *)buf; 5910 u16 fc; 5911 union wpa_event_data event; 5912 5913 if (len < sizeof(*hdr)) 5914 return; 5915 5916 fc = le_to_host16(hdr->frame_control); 5917 5918 os_memset(&event, 0, sizeof(event)); 5919 event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len); 5920 event.rx_from_unknown.addr = hdr->addr2; 5921 event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) == 5922 (WLAN_FC_FROMDS | WLAN_FC_TODS); 5923 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 5924 } 5925 5926 5927 static void handle_frame(struct wpa_driver_nl80211_data *drv, 5928 u8 *buf, size_t len, int datarate, int ssi_signal) 5929 { 5930 struct ieee80211_hdr *hdr; 5931 u16 fc; 5932 union wpa_event_data event; 5933 5934 hdr = (struct ieee80211_hdr *) buf; 5935 fc = le_to_host16(hdr->frame_control); 5936 5937 switch (WLAN_FC_GET_TYPE(fc)) { 5938 case WLAN_FC_TYPE_MGMT: 5939 os_memset(&event, 0, sizeof(event)); 5940 event.rx_mgmt.frame = buf; 5941 event.rx_mgmt.frame_len = len; 5942 event.rx_mgmt.datarate = datarate; 5943 event.rx_mgmt.ssi_signal = ssi_signal; 5944 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 5945 break; 5946 case WLAN_FC_TYPE_CTRL: 5947 /* can only get here with PS-Poll frames */ 5948 wpa_printf(MSG_DEBUG, "CTRL"); 5949 from_unknown_sta(drv, buf, len); 5950 break; 5951 case WLAN_FC_TYPE_DATA: 5952 from_unknown_sta(drv, buf, len); 5953 break; 5954 } 5955 } 5956 5957 5958 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx) 5959 { 5960 struct wpa_driver_nl80211_data *drv = eloop_ctx; 5961 int len; 5962 unsigned char buf[3000]; 5963 struct ieee80211_radiotap_iterator iter; 5964 int ret; 5965 int datarate = 0, ssi_signal = 0; 5966 int injected = 0, failed = 0, rxflags = 0; 5967 5968 len = recv(sock, buf, sizeof(buf), 0); 5969 if (len < 0) { 5970 perror("recv"); 5971 return; 5972 } 5973 5974 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) { 5975 printf("received invalid radiotap frame\n"); 5976 return; 5977 } 5978 5979 while (1) { 5980 ret = ieee80211_radiotap_iterator_next(&iter); 5981 if (ret == -ENOENT) 5982 break; 5983 if (ret) { 5984 printf("received invalid radiotap frame (%d)\n", ret); 5985 return; 5986 } 5987 switch (iter.this_arg_index) { 5988 case IEEE80211_RADIOTAP_FLAGS: 5989 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS) 5990 len -= 4; 5991 break; 5992 case IEEE80211_RADIOTAP_RX_FLAGS: 5993 rxflags = 1; 5994 break; 5995 case IEEE80211_RADIOTAP_TX_FLAGS: 5996 injected = 1; 5997 failed = le_to_host16((*(uint16_t *) iter.this_arg)) & 5998 IEEE80211_RADIOTAP_F_TX_FAIL; 5999 break; 6000 case IEEE80211_RADIOTAP_DATA_RETRIES: 6001 break; 6002 case IEEE80211_RADIOTAP_CHANNEL: 6003 /* TODO: convert from freq/flags to channel number */ 6004 break; 6005 case IEEE80211_RADIOTAP_RATE: 6006 datarate = *iter.this_arg * 5; 6007 break; 6008 case IEEE80211_RADIOTAP_DBM_ANTSIGNAL: 6009 ssi_signal = (s8) *iter.this_arg; 6010 break; 6011 } 6012 } 6013 6014 if (rxflags && injected) 6015 return; 6016 6017 if (!injected) 6018 handle_frame(drv, buf + iter.max_length, 6019 len - iter.max_length, datarate, ssi_signal); 6020 else 6021 handle_tx_callback(drv->ctx, buf + iter.max_length, 6022 len - iter.max_length, !failed); 6023 } 6024 6025 6026 /* 6027 * we post-process the filter code later and rewrite 6028 * this to the offset to the last instruction 6029 */ 6030 #define PASS 0xFF 6031 #define FAIL 0xFE 6032 6033 static struct sock_filter msock_filter_insns[] = { 6034 /* 6035 * do a little-endian load of the radiotap length field 6036 */ 6037 /* load lower byte into A */ 6038 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2), 6039 /* put it into X (== index register) */ 6040 BPF_STMT(BPF_MISC| BPF_TAX, 0), 6041 /* load upper byte into A */ 6042 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3), 6043 /* left-shift it by 8 */ 6044 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8), 6045 /* or with X */ 6046 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0), 6047 /* put result into X */ 6048 BPF_STMT(BPF_MISC| BPF_TAX, 0), 6049 6050 /* 6051 * Allow management frames through, this also gives us those 6052 * management frames that we sent ourselves with status 6053 */ 6054 /* load the lower byte of the IEEE 802.11 frame control field */ 6055 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6056 /* mask off frame type and version */ 6057 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF), 6058 /* accept frame if it's both 0, fall through otherwise */ 6059 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0), 6060 6061 /* 6062 * TODO: add a bit to radiotap RX flags that indicates 6063 * that the sending station is not associated, then 6064 * add a filter here that filters on our DA and that flag 6065 * to allow us to deauth frames to that bad station. 6066 * 6067 * For now allow all To DS data frames through. 6068 */ 6069 /* load the IEEE 802.11 frame control field */ 6070 BPF_STMT(BPF_LD | BPF_H | BPF_IND, 0), 6071 /* mask off frame type, version and DS status */ 6072 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03), 6073 /* accept frame if version 0, type 2 and To DS, fall through otherwise 6074 */ 6075 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0), 6076 6077 #if 0 6078 /* 6079 * drop non-data frames 6080 */ 6081 /* load the lower byte of the frame control field */ 6082 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6083 /* mask off QoS bit */ 6084 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c), 6085 /* drop non-data frames */ 6086 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL), 6087 #endif 6088 /* load the upper byte of the frame control field */ 6089 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1), 6090 /* mask off toDS/fromDS */ 6091 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03), 6092 /* accept WDS frames */ 6093 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0), 6094 6095 /* 6096 * add header length to index 6097 */ 6098 /* load the lower byte of the frame control field */ 6099 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6100 /* mask off QoS bit */ 6101 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80), 6102 /* right shift it by 6 to give 0 or 2 */ 6103 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6), 6104 /* add data frame header length */ 6105 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24), 6106 /* add index, was start of 802.11 header */ 6107 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0), 6108 /* move to index, now start of LL header */ 6109 BPF_STMT(BPF_MISC | BPF_TAX, 0), 6110 6111 /* 6112 * Accept empty data frames, we use those for 6113 * polling activity. 6114 */ 6115 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0), 6116 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0), 6117 6118 /* 6119 * Accept EAPOL frames 6120 */ 6121 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0), 6122 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL), 6123 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4), 6124 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL), 6125 6126 /* keep these last two statements or change the code below */ 6127 /* return 0 == "DROP" */ 6128 BPF_STMT(BPF_RET | BPF_K, 0), 6129 /* return ~0 == "keep all" */ 6130 BPF_STMT(BPF_RET | BPF_K, ~0), 6131 }; 6132 6133 static struct sock_fprog msock_filter = { 6134 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]), 6135 .filter = msock_filter_insns, 6136 }; 6137 6138 6139 static int add_monitor_filter(int s) 6140 { 6141 int idx; 6142 6143 /* rewrite all PASS/FAIL jump offsets */ 6144 for (idx = 0; idx < msock_filter.len; idx++) { 6145 struct sock_filter *insn = &msock_filter_insns[idx]; 6146 6147 if (BPF_CLASS(insn->code) == BPF_JMP) { 6148 if (insn->code == (BPF_JMP|BPF_JA)) { 6149 if (insn->k == PASS) 6150 insn->k = msock_filter.len - idx - 2; 6151 else if (insn->k == FAIL) 6152 insn->k = msock_filter.len - idx - 3; 6153 } 6154 6155 if (insn->jt == PASS) 6156 insn->jt = msock_filter.len - idx - 2; 6157 else if (insn->jt == FAIL) 6158 insn->jt = msock_filter.len - idx - 3; 6159 6160 if (insn->jf == PASS) 6161 insn->jf = msock_filter.len - idx - 2; 6162 else if (insn->jf == FAIL) 6163 insn->jf = msock_filter.len - idx - 3; 6164 } 6165 } 6166 6167 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER, 6168 &msock_filter, sizeof(msock_filter))) { 6169 perror("SO_ATTACH_FILTER"); 6170 return -1; 6171 } 6172 6173 return 0; 6174 } 6175 6176 6177 static void nl80211_remove_monitor_interface( 6178 struct wpa_driver_nl80211_data *drv) 6179 { 6180 drv->monitor_refcount--; 6181 if (drv->monitor_refcount > 0) 6182 return; 6183 6184 if (drv->monitor_ifidx >= 0) { 6185 nl80211_remove_iface(drv, drv->monitor_ifidx); 6186 drv->monitor_ifidx = -1; 6187 } 6188 if (drv->monitor_sock >= 0) { 6189 eloop_unregister_read_sock(drv->monitor_sock); 6190 close(drv->monitor_sock); 6191 drv->monitor_sock = -1; 6192 } 6193 } 6194 6195 6196 static int 6197 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv) 6198 { 6199 char buf[IFNAMSIZ]; 6200 struct sockaddr_ll ll; 6201 int optval; 6202 socklen_t optlen; 6203 6204 if (drv->monitor_ifidx >= 0) { 6205 drv->monitor_refcount++; 6206 return 0; 6207 } 6208 6209 if (os_strncmp(drv->first_bss.ifname, "p2p-", 4) == 0) { 6210 /* 6211 * P2P interface name is of the format p2p-%s-%d. For monitor 6212 * interface name corresponding to P2P GO, replace "p2p-" with 6213 * "mon-" to retain the same interface name length and to 6214 * indicate that it is a monitor interface. 6215 */ 6216 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss.ifname + 4); 6217 } else { 6218 /* Non-P2P interface with AP functionality. */ 6219 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname); 6220 } 6221 6222 buf[IFNAMSIZ - 1] = '\0'; 6223 6224 drv->monitor_ifidx = 6225 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL, 6226 0); 6227 6228 if (drv->monitor_ifidx == -EOPNOTSUPP) { 6229 /* 6230 * This is backward compatibility for a few versions of 6231 * the kernel only that didn't advertise the right 6232 * attributes for the only driver that then supported 6233 * AP mode w/o monitor -- ath6kl. 6234 */ 6235 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support " 6236 "monitor interface type - try to run without it"); 6237 drv->device_ap_sme = 1; 6238 } 6239 6240 if (drv->monitor_ifidx < 0) 6241 return -1; 6242 6243 if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1)) 6244 goto error; 6245 6246 memset(&ll, 0, sizeof(ll)); 6247 ll.sll_family = AF_PACKET; 6248 ll.sll_ifindex = drv->monitor_ifidx; 6249 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); 6250 if (drv->monitor_sock < 0) { 6251 perror("socket[PF_PACKET,SOCK_RAW]"); 6252 goto error; 6253 } 6254 6255 if (add_monitor_filter(drv->monitor_sock)) { 6256 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor " 6257 "interface; do filtering in user space"); 6258 /* This works, but will cost in performance. */ 6259 } 6260 6261 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) { 6262 perror("monitor socket bind"); 6263 goto error; 6264 } 6265 6266 optlen = sizeof(optval); 6267 optval = 20; 6268 if (setsockopt 6269 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) { 6270 perror("Failed to set socket priority"); 6271 goto error; 6272 } 6273 6274 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read, 6275 drv, NULL)) { 6276 printf("Could not register monitor read socket\n"); 6277 goto error; 6278 } 6279 6280 return 0; 6281 error: 6282 nl80211_remove_monitor_interface(drv); 6283 return -1; 6284 } 6285 6286 6287 static int nl80211_setup_ap(struct i802_bss *bss) 6288 { 6289 struct wpa_driver_nl80211_data *drv = bss->drv; 6290 6291 wpa_printf(MSG_DEBUG, "nl80211: Setup AP - device_ap_sme=%d " 6292 "use_monitor=%d", drv->device_ap_sme, drv->use_monitor); 6293 6294 /* 6295 * Disable Probe Request reporting unless we need it in this way for 6296 * devices that include the AP SME, in the other case (unless using 6297 * monitor iface) we'll get it through the nl_mgmt socket instead. 6298 */ 6299 if (!drv->device_ap_sme) 6300 wpa_driver_nl80211_probe_req_report(bss, 0); 6301 6302 if (!drv->device_ap_sme && !drv->use_monitor) 6303 if (nl80211_mgmt_subscribe_ap(bss)) 6304 return -1; 6305 6306 if (drv->device_ap_sme && !drv->use_monitor) 6307 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 6308 return -1; 6309 6310 if (!drv->device_ap_sme && drv->use_monitor && 6311 nl80211_create_monitor_interface(drv) && 6312 !drv->device_ap_sme) 6313 return -1; 6314 6315 #ifdef ANDROID_P2P 6316 if (drv->device_ap_sme && drv->use_monitor) 6317 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 6318 return -1; 6319 6320 if (drv->use_monitor && 6321 nl80211_create_monitor_interface(drv)) 6322 return -1; 6323 #endif 6324 6325 if (drv->device_ap_sme && 6326 wpa_driver_nl80211_probe_req_report(bss, 1) < 0) { 6327 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable " 6328 "Probe Request frame reporting in AP mode"); 6329 /* Try to survive without this */ 6330 } 6331 6332 return 0; 6333 } 6334 6335 6336 static void nl80211_teardown_ap(struct i802_bss *bss) 6337 { 6338 struct wpa_driver_nl80211_data *drv = bss->drv; 6339 6340 if (drv->device_ap_sme) { 6341 wpa_driver_nl80211_probe_req_report(bss, 0); 6342 if (!drv->use_monitor) 6343 nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)"); 6344 } else if (drv->use_monitor) 6345 nl80211_remove_monitor_interface(drv); 6346 else 6347 nl80211_mgmt_unsubscribe(bss, "AP teardown"); 6348 6349 bss->beacon_set = 0; 6350 } 6351 6352 6353 static int nl80211_send_eapol_data(struct i802_bss *bss, 6354 const u8 *addr, const u8 *data, 6355 size_t data_len) 6356 { 6357 struct sockaddr_ll ll; 6358 int ret; 6359 6360 if (bss->drv->eapol_tx_sock < 0) { 6361 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL"); 6362 return -1; 6363 } 6364 6365 os_memset(&ll, 0, sizeof(ll)); 6366 ll.sll_family = AF_PACKET; 6367 ll.sll_ifindex = bss->ifindex; 6368 ll.sll_protocol = htons(ETH_P_PAE); 6369 ll.sll_halen = ETH_ALEN; 6370 os_memcpy(ll.sll_addr, addr, ETH_ALEN); 6371 ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0, 6372 (struct sockaddr *) &ll, sizeof(ll)); 6373 if (ret < 0) 6374 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s", 6375 strerror(errno)); 6376 6377 return ret; 6378 } 6379 6380 6381 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 6382 6383 static int wpa_driver_nl80211_hapd_send_eapol( 6384 void *priv, const u8 *addr, const u8 *data, 6385 size_t data_len, int encrypt, const u8 *own_addr, u32 flags) 6386 { 6387 struct i802_bss *bss = priv; 6388 struct wpa_driver_nl80211_data *drv = bss->drv; 6389 struct ieee80211_hdr *hdr; 6390 size_t len; 6391 u8 *pos; 6392 int res; 6393 int qos = flags & WPA_STA_WMM; 6394 #ifndef ANDROID_P2P 6395 if (drv->device_ap_sme || !drv->use_monitor) 6396 #else 6397 if (drv->device_ap_sme && !drv->use_monitor) 6398 #endif 6399 return nl80211_send_eapol_data(bss, addr, data, data_len); 6400 6401 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 + 6402 data_len; 6403 hdr = os_zalloc(len); 6404 if (hdr == NULL) { 6405 printf("malloc() failed for i802_send_data(len=%lu)\n", 6406 (unsigned long) len); 6407 return -1; 6408 } 6409 6410 hdr->frame_control = 6411 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA); 6412 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS); 6413 if (encrypt) 6414 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP); 6415 if (qos) { 6416 hdr->frame_control |= 6417 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4); 6418 } 6419 6420 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN); 6421 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 6422 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 6423 pos = (u8 *) (hdr + 1); 6424 6425 if (qos) { 6426 /* Set highest priority in QoS header */ 6427 pos[0] = 7; 6428 pos[1] = 0; 6429 pos += 2; 6430 } 6431 6432 memcpy(pos, rfc1042_header, sizeof(rfc1042_header)); 6433 pos += sizeof(rfc1042_header); 6434 WPA_PUT_BE16(pos, ETH_P_PAE); 6435 pos += 2; 6436 memcpy(pos, data, data_len); 6437 6438 res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0, 6439 0, 0, 0, 0); 6440 if (res < 0) { 6441 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - " 6442 "failed: %d (%s)", 6443 (unsigned long) len, errno, strerror(errno)); 6444 } 6445 os_free(hdr); 6446 6447 return res; 6448 } 6449 6450 6451 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr, 6452 int total_flags, 6453 int flags_or, int flags_and) 6454 { 6455 struct i802_bss *bss = priv; 6456 struct wpa_driver_nl80211_data *drv = bss->drv; 6457 struct nl_msg *msg, *flags = NULL; 6458 struct nl80211_sta_flag_update upd; 6459 6460 msg = nlmsg_alloc(); 6461 if (!msg) 6462 return -ENOMEM; 6463 6464 flags = nlmsg_alloc(); 6465 if (!flags) { 6466 nlmsg_free(msg); 6467 return -ENOMEM; 6468 } 6469 6470 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 6471 6472 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 6473 if_nametoindex(bss->ifname)); 6474 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 6475 6476 /* 6477 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This 6478 * can be removed eventually. 6479 */ 6480 if (total_flags & WPA_STA_AUTHORIZED) 6481 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED); 6482 6483 if (total_flags & WPA_STA_WMM) 6484 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME); 6485 6486 if (total_flags & WPA_STA_SHORT_PREAMBLE) 6487 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE); 6488 6489 if (total_flags & WPA_STA_MFP) 6490 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP); 6491 6492 if (total_flags & WPA_STA_TDLS_PEER) 6493 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_TDLS_PEER); 6494 6495 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags)) 6496 goto nla_put_failure; 6497 6498 os_memset(&upd, 0, sizeof(upd)); 6499 upd.mask = sta_flags_nl80211(flags_or | ~flags_and); 6500 upd.set = sta_flags_nl80211(flags_or); 6501 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 6502 6503 nlmsg_free(flags); 6504 6505 return send_and_recv_msgs(drv, msg, NULL, NULL); 6506 nla_put_failure: 6507 nlmsg_free(msg); 6508 nlmsg_free(flags); 6509 return -ENOBUFS; 6510 } 6511 6512 6513 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv, 6514 struct wpa_driver_associate_params *params) 6515 { 6516 enum nl80211_iftype nlmode; 6517 6518 if (params->p2p) { 6519 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P " 6520 "group (GO)"); 6521 nlmode = NL80211_IFTYPE_P2P_GO; 6522 } else 6523 nlmode = NL80211_IFTYPE_AP; 6524 6525 if (wpa_driver_nl80211_set_mode(&drv->first_bss, nlmode) || 6526 wpa_driver_nl80211_set_freq(&drv->first_bss, params->freq, 0, 0)) { 6527 nl80211_remove_monitor_interface(drv); 6528 return -1; 6529 } 6530 6531 return 0; 6532 } 6533 6534 6535 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv) 6536 { 6537 struct nl_msg *msg; 6538 int ret = -1; 6539 6540 msg = nlmsg_alloc(); 6541 if (!msg) 6542 return -1; 6543 6544 nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS); 6545 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6546 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6547 msg = NULL; 6548 if (ret) { 6549 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d " 6550 "(%s)", ret, strerror(-ret)); 6551 goto nla_put_failure; 6552 } 6553 6554 ret = 0; 6555 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully"); 6556 6557 nla_put_failure: 6558 nlmsg_free(msg); 6559 return ret; 6560 } 6561 6562 6563 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv, 6564 struct wpa_driver_associate_params *params) 6565 { 6566 struct nl_msg *msg; 6567 int ret = -1; 6568 int count = 0; 6569 6570 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex); 6571 6572 if (wpa_driver_nl80211_set_mode(&drv->first_bss, 6573 NL80211_IFTYPE_ADHOC)) { 6574 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into " 6575 "IBSS mode"); 6576 return -1; 6577 } 6578 6579 retry: 6580 msg = nlmsg_alloc(); 6581 if (!msg) 6582 return -1; 6583 6584 nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS); 6585 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6586 6587 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid)) 6588 goto nla_put_failure; 6589 6590 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 6591 params->ssid, params->ssid_len); 6592 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 6593 params->ssid); 6594 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 6595 drv->ssid_len = params->ssid_len; 6596 6597 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 6598 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 6599 6600 ret = nl80211_set_conn_keys(params, msg); 6601 if (ret) 6602 goto nla_put_failure; 6603 6604 if (params->bssid && params->fixed_bssid) { 6605 wpa_printf(MSG_DEBUG, " * BSSID=" MACSTR, 6606 MAC2STR(params->bssid)); 6607 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 6608 } 6609 6610 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 6611 params->key_mgmt_suite == KEY_MGMT_PSK || 6612 params->key_mgmt_suite == KEY_MGMT_802_1X_SHA256 || 6613 params->key_mgmt_suite == KEY_MGMT_PSK_SHA256) { 6614 wpa_printf(MSG_DEBUG, " * control port"); 6615 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 6616 } 6617 6618 if (params->wpa_ie) { 6619 wpa_hexdump(MSG_DEBUG, 6620 " * Extra IEs for Beacon/Probe Response frames", 6621 params->wpa_ie, params->wpa_ie_len); 6622 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 6623 params->wpa_ie); 6624 } 6625 6626 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6627 msg = NULL; 6628 if (ret) { 6629 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)", 6630 ret, strerror(-ret)); 6631 count++; 6632 if (ret == -EALREADY && count == 1) { 6633 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after " 6634 "forced leave"); 6635 nl80211_leave_ibss(drv); 6636 nlmsg_free(msg); 6637 goto retry; 6638 } 6639 6640 goto nla_put_failure; 6641 } 6642 ret = 0; 6643 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully"); 6644 6645 nla_put_failure: 6646 nlmsg_free(msg); 6647 return ret; 6648 } 6649 6650 6651 static unsigned int nl80211_get_assoc_bssid(struct wpa_driver_nl80211_data *drv, 6652 u8 *bssid) 6653 { 6654 struct nl_msg *msg; 6655 int ret; 6656 struct nl80211_bss_info_arg arg; 6657 6658 os_memset(&arg, 0, sizeof(arg)); 6659 msg = nlmsg_alloc(); 6660 if (!msg) 6661 goto nla_put_failure; 6662 6663 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 6664 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6665 6666 arg.drv = drv; 6667 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 6668 msg = NULL; 6669 if (ret == 0) { 6670 if (is_zero_ether_addr(arg.assoc_bssid)) 6671 return -ENOTCONN; 6672 os_memcpy(bssid, arg.assoc_bssid, ETH_ALEN); 6673 return 0; 6674 } 6675 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 6676 "(%s)", ret, strerror(-ret)); 6677 nla_put_failure: 6678 nlmsg_free(msg); 6679 return drv->assoc_freq; 6680 } 6681 6682 6683 static int nl80211_disconnect(struct wpa_driver_nl80211_data *drv, 6684 const u8 *bssid) 6685 { 6686 u8 addr[ETH_ALEN]; 6687 6688 if (bssid == NULL) { 6689 int res = nl80211_get_assoc_bssid(drv, addr); 6690 if (res) 6691 return res; 6692 bssid = addr; 6693 } 6694 6695 return wpa_driver_nl80211_disconnect(drv, bssid, 6696 WLAN_REASON_PREV_AUTH_NOT_VALID); 6697 } 6698 6699 6700 static int wpa_driver_nl80211_connect( 6701 struct wpa_driver_nl80211_data *drv, 6702 struct wpa_driver_associate_params *params) 6703 { 6704 struct nl_msg *msg; 6705 enum nl80211_auth_type type; 6706 int ret = 0; 6707 int algs; 6708 6709 msg = nlmsg_alloc(); 6710 if (!msg) 6711 return -1; 6712 6713 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex); 6714 nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT); 6715 6716 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6717 if (params->bssid) { 6718 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 6719 MAC2STR(params->bssid)); 6720 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 6721 } 6722 if (params->freq) { 6723 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 6724 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 6725 } 6726 if (params->bg_scan_period >= 0) { 6727 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 6728 params->bg_scan_period); 6729 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 6730 params->bg_scan_period); 6731 } 6732 if (params->ssid) { 6733 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 6734 params->ssid, params->ssid_len); 6735 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 6736 params->ssid); 6737 if (params->ssid_len > sizeof(drv->ssid)) 6738 goto nla_put_failure; 6739 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 6740 drv->ssid_len = params->ssid_len; 6741 } 6742 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 6743 if (params->wpa_ie) 6744 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 6745 params->wpa_ie); 6746 6747 algs = 0; 6748 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 6749 algs++; 6750 if (params->auth_alg & WPA_AUTH_ALG_SHARED) 6751 algs++; 6752 if (params->auth_alg & WPA_AUTH_ALG_LEAP) 6753 algs++; 6754 if (algs > 1) { 6755 wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic " 6756 "selection"); 6757 goto skip_auth_type; 6758 } 6759 6760 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 6761 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 6762 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 6763 type = NL80211_AUTHTYPE_SHARED_KEY; 6764 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 6765 type = NL80211_AUTHTYPE_NETWORK_EAP; 6766 else if (params->auth_alg & WPA_AUTH_ALG_FT) 6767 type = NL80211_AUTHTYPE_FT; 6768 else 6769 goto nla_put_failure; 6770 6771 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 6772 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 6773 6774 skip_auth_type: 6775 if (params->wpa_proto) { 6776 enum nl80211_wpa_versions ver = 0; 6777 6778 if (params->wpa_proto & WPA_PROTO_WPA) 6779 ver |= NL80211_WPA_VERSION_1; 6780 if (params->wpa_proto & WPA_PROTO_RSN) 6781 ver |= NL80211_WPA_VERSION_2; 6782 6783 wpa_printf(MSG_DEBUG, " * WPA Versions 0x%x", ver); 6784 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 6785 } 6786 6787 if (params->pairwise_suite != CIPHER_NONE) { 6788 int cipher; 6789 6790 switch (params->pairwise_suite) { 6791 case CIPHER_WEP40: 6792 cipher = WLAN_CIPHER_SUITE_WEP40; 6793 break; 6794 case CIPHER_WEP104: 6795 cipher = WLAN_CIPHER_SUITE_WEP104; 6796 break; 6797 case CIPHER_CCMP: 6798 cipher = WLAN_CIPHER_SUITE_CCMP; 6799 break; 6800 case CIPHER_GCMP: 6801 cipher = WLAN_CIPHER_SUITE_GCMP; 6802 break; 6803 case CIPHER_TKIP: 6804 default: 6805 cipher = WLAN_CIPHER_SUITE_TKIP; 6806 break; 6807 } 6808 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 6809 } 6810 6811 if (params->group_suite != CIPHER_NONE) { 6812 int cipher; 6813 6814 switch (params->group_suite) { 6815 case CIPHER_WEP40: 6816 cipher = WLAN_CIPHER_SUITE_WEP40; 6817 break; 6818 case CIPHER_WEP104: 6819 cipher = WLAN_CIPHER_SUITE_WEP104; 6820 break; 6821 case CIPHER_CCMP: 6822 cipher = WLAN_CIPHER_SUITE_CCMP; 6823 break; 6824 case CIPHER_GCMP: 6825 cipher = WLAN_CIPHER_SUITE_GCMP; 6826 break; 6827 case CIPHER_TKIP: 6828 default: 6829 cipher = WLAN_CIPHER_SUITE_TKIP; 6830 break; 6831 } 6832 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 6833 } 6834 6835 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 6836 params->key_mgmt_suite == KEY_MGMT_PSK) { 6837 int mgmt = WLAN_AKM_SUITE_PSK; 6838 6839 switch (params->key_mgmt_suite) { 6840 case KEY_MGMT_802_1X: 6841 mgmt = WLAN_AKM_SUITE_8021X; 6842 break; 6843 case KEY_MGMT_PSK: 6844 default: 6845 mgmt = WLAN_AKM_SUITE_PSK; 6846 break; 6847 } 6848 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt); 6849 } 6850 6851 if (params->disable_ht) 6852 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 6853 6854 if (params->htcaps && params->htcaps_mask) { 6855 int sz = sizeof(struct ieee80211_ht_capabilities); 6856 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 6857 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 6858 params->htcaps_mask); 6859 } 6860 6861 ret = nl80211_set_conn_keys(params, msg); 6862 if (ret) 6863 goto nla_put_failure; 6864 6865 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6866 msg = NULL; 6867 if (ret) { 6868 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d " 6869 "(%s)", ret, strerror(-ret)); 6870 /* 6871 * cfg80211 does not currently accept new connection if we are 6872 * already connected. As a workaround, force disconnection and 6873 * try again once the driver indicates it completed 6874 * disconnection. 6875 */ 6876 if (ret == -EALREADY) 6877 nl80211_disconnect(drv, params->bssid); 6878 goto nla_put_failure; 6879 } 6880 ret = 0; 6881 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully"); 6882 6883 nla_put_failure: 6884 nlmsg_free(msg); 6885 return ret; 6886 6887 } 6888 6889 6890 static int wpa_driver_nl80211_associate( 6891 void *priv, struct wpa_driver_associate_params *params) 6892 { 6893 struct i802_bss *bss = priv; 6894 struct wpa_driver_nl80211_data *drv = bss->drv; 6895 int ret = -1; 6896 struct nl_msg *msg; 6897 6898 if (params->mode == IEEE80211_MODE_AP) 6899 return wpa_driver_nl80211_ap(drv, params); 6900 6901 if (params->mode == IEEE80211_MODE_IBSS) 6902 return wpa_driver_nl80211_ibss(drv, params); 6903 6904 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) { 6905 enum nl80211_iftype nlmode = params->p2p ? 6906 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 6907 6908 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0) 6909 return -1; 6910 return wpa_driver_nl80211_connect(drv, params); 6911 } 6912 6913 drv->associated = 0; 6914 6915 msg = nlmsg_alloc(); 6916 if (!msg) 6917 return -1; 6918 6919 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)", 6920 drv->ifindex); 6921 nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE); 6922 6923 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6924 if (params->bssid) { 6925 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 6926 MAC2STR(params->bssid)); 6927 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 6928 } 6929 if (params->freq) { 6930 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 6931 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 6932 drv->assoc_freq = params->freq; 6933 } else 6934 drv->assoc_freq = 0; 6935 if (params->bg_scan_period >= 0) { 6936 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 6937 params->bg_scan_period); 6938 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 6939 params->bg_scan_period); 6940 } 6941 if (params->ssid) { 6942 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 6943 params->ssid, params->ssid_len); 6944 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 6945 params->ssid); 6946 if (params->ssid_len > sizeof(drv->ssid)) 6947 goto nla_put_failure; 6948 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 6949 drv->ssid_len = params->ssid_len; 6950 } 6951 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 6952 if (params->wpa_ie) 6953 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 6954 params->wpa_ie); 6955 6956 if (params->pairwise_suite != CIPHER_NONE) { 6957 int cipher; 6958 6959 switch (params->pairwise_suite) { 6960 case CIPHER_WEP40: 6961 cipher = WLAN_CIPHER_SUITE_WEP40; 6962 break; 6963 case CIPHER_WEP104: 6964 cipher = WLAN_CIPHER_SUITE_WEP104; 6965 break; 6966 case CIPHER_CCMP: 6967 cipher = WLAN_CIPHER_SUITE_CCMP; 6968 break; 6969 case CIPHER_GCMP: 6970 cipher = WLAN_CIPHER_SUITE_GCMP; 6971 break; 6972 case CIPHER_TKIP: 6973 default: 6974 cipher = WLAN_CIPHER_SUITE_TKIP; 6975 break; 6976 } 6977 wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher); 6978 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 6979 } 6980 6981 if (params->group_suite != CIPHER_NONE) { 6982 int cipher; 6983 6984 switch (params->group_suite) { 6985 case CIPHER_WEP40: 6986 cipher = WLAN_CIPHER_SUITE_WEP40; 6987 break; 6988 case CIPHER_WEP104: 6989 cipher = WLAN_CIPHER_SUITE_WEP104; 6990 break; 6991 case CIPHER_CCMP: 6992 cipher = WLAN_CIPHER_SUITE_CCMP; 6993 break; 6994 case CIPHER_GCMP: 6995 cipher = WLAN_CIPHER_SUITE_GCMP; 6996 break; 6997 case CIPHER_TKIP: 6998 default: 6999 cipher = WLAN_CIPHER_SUITE_TKIP; 7000 break; 7001 } 7002 wpa_printf(MSG_DEBUG, " * group=0x%x", cipher); 7003 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 7004 } 7005 7006 #ifdef CONFIG_IEEE80211W 7007 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED) 7008 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED); 7009 #endif /* CONFIG_IEEE80211W */ 7010 7011 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 7012 7013 if (params->prev_bssid) { 7014 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR, 7015 MAC2STR(params->prev_bssid)); 7016 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN, 7017 params->prev_bssid); 7018 } 7019 7020 if (params->disable_ht) 7021 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 7022 7023 if (params->htcaps && params->htcaps_mask) { 7024 int sz = sizeof(struct ieee80211_ht_capabilities); 7025 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 7026 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 7027 params->htcaps_mask); 7028 } 7029 7030 if (params->p2p) 7031 wpa_printf(MSG_DEBUG, " * P2P group"); 7032 7033 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7034 msg = NULL; 7035 if (ret) { 7036 wpa_dbg(drv->ctx, MSG_DEBUG, 7037 "nl80211: MLME command failed (assoc): ret=%d (%s)", 7038 ret, strerror(-ret)); 7039 nl80211_dump_scan(drv); 7040 goto nla_put_failure; 7041 } 7042 ret = 0; 7043 wpa_printf(MSG_DEBUG, "nl80211: Association request send " 7044 "successfully"); 7045 7046 nla_put_failure: 7047 nlmsg_free(msg); 7048 return ret; 7049 } 7050 7051 7052 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv, 7053 int ifindex, enum nl80211_iftype mode) 7054 { 7055 struct nl_msg *msg; 7056 int ret = -ENOBUFS; 7057 7058 wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)", 7059 ifindex, mode, nl80211_iftype_str(mode)); 7060 7061 msg = nlmsg_alloc(); 7062 if (!msg) 7063 return -ENOMEM; 7064 7065 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE); 7066 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 7067 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode); 7068 7069 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7070 msg = NULL; 7071 if (!ret) 7072 return 0; 7073 nla_put_failure: 7074 nlmsg_free(msg); 7075 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:" 7076 " %d (%s)", ifindex, mode, ret, strerror(-ret)); 7077 return ret; 7078 } 7079 7080 7081 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, 7082 enum nl80211_iftype nlmode) 7083 { 7084 struct wpa_driver_nl80211_data *drv = bss->drv; 7085 int ret = -1; 7086 int i; 7087 int was_ap = is_ap_interface(drv->nlmode); 7088 int res; 7089 7090 res = nl80211_set_mode(drv, drv->ifindex, nlmode); 7091 if (res == 0) { 7092 drv->nlmode = nlmode; 7093 ret = 0; 7094 goto done; 7095 } 7096 7097 if (res == -ENODEV) 7098 return -1; 7099 7100 if (nlmode == drv->nlmode) { 7101 wpa_printf(MSG_DEBUG, "nl80211: Interface already in " 7102 "requested mode - ignore error"); 7103 ret = 0; 7104 goto done; /* Already in the requested mode */ 7105 } 7106 7107 /* mac80211 doesn't allow mode changes while the device is up, so 7108 * take the device down, try to set the mode again, and bring the 7109 * device back up. 7110 */ 7111 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting " 7112 "interface down"); 7113 for (i = 0; i < 10; i++) { 7114 res = linux_set_iface_flags(drv->global->ioctl_sock, 7115 bss->ifname, 0); 7116 if (res == -EACCES || res == -ENODEV) 7117 break; 7118 if (res == 0) { 7119 /* Try to set the mode again while the interface is 7120 * down */ 7121 ret = nl80211_set_mode(drv, drv->ifindex, nlmode); 7122 if (ret == -EACCES) 7123 break; 7124 res = linux_set_iface_flags(drv->global->ioctl_sock, 7125 bss->ifname, 1); 7126 if (res && !ret) 7127 ret = -1; 7128 else if (ret != -EBUSY) 7129 break; 7130 } else 7131 wpa_printf(MSG_DEBUG, "nl80211: Failed to set " 7132 "interface down"); 7133 os_sleep(0, 100000); 7134 } 7135 7136 if (!ret) { 7137 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while " 7138 "interface is down"); 7139 drv->nlmode = nlmode; 7140 drv->ignore_if_down_event = 1; 7141 } 7142 7143 done: 7144 if (ret) { 7145 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d " 7146 "from %d failed", nlmode, drv->nlmode); 7147 return ret; 7148 } 7149 7150 if (is_p2p_interface(nlmode)) 7151 nl80211_disable_11b_rates(drv, drv->ifindex, 1); 7152 else if (drv->disabled_11b_rates) 7153 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 7154 7155 if (is_ap_interface(nlmode)) { 7156 nl80211_mgmt_unsubscribe(bss, "start AP"); 7157 /* Setup additional AP mode functionality if needed */ 7158 if (nl80211_setup_ap(bss)) 7159 return -1; 7160 } else if (was_ap) { 7161 /* Remove additional AP mode functionality */ 7162 nl80211_teardown_ap(bss); 7163 } else { 7164 nl80211_mgmt_unsubscribe(bss, "mode change"); 7165 } 7166 7167 if (!bss->in_deinit && !is_ap_interface(nlmode) && 7168 nl80211_mgmt_subscribe_non_ap(bss) < 0) 7169 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action " 7170 "frame processing - ignore for now"); 7171 7172 return 0; 7173 } 7174 7175 7176 static int wpa_driver_nl80211_get_capa(void *priv, 7177 struct wpa_driver_capa *capa) 7178 { 7179 struct i802_bss *bss = priv; 7180 struct wpa_driver_nl80211_data *drv = bss->drv; 7181 if (!drv->has_capability) 7182 return -1; 7183 os_memcpy(capa, &drv->capa, sizeof(*capa)); 7184 return 0; 7185 } 7186 7187 7188 static int wpa_driver_nl80211_set_operstate(void *priv, int state) 7189 { 7190 struct i802_bss *bss = priv; 7191 struct wpa_driver_nl80211_data *drv = bss->drv; 7192 7193 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)", 7194 __func__, drv->operstate, state, state ? "UP" : "DORMANT"); 7195 drv->operstate = state; 7196 return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1, 7197 state ? IF_OPER_UP : IF_OPER_DORMANT); 7198 } 7199 7200 7201 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized) 7202 { 7203 struct i802_bss *bss = priv; 7204 struct wpa_driver_nl80211_data *drv = bss->drv; 7205 struct nl_msg *msg; 7206 struct nl80211_sta_flag_update upd; 7207 7208 msg = nlmsg_alloc(); 7209 if (!msg) 7210 return -ENOMEM; 7211 7212 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 7213 7214 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7215 if_nametoindex(bss->ifname)); 7216 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 7217 7218 os_memset(&upd, 0, sizeof(upd)); 7219 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED); 7220 if (authorized) 7221 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED); 7222 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 7223 7224 return send_and_recv_msgs(drv, msg, NULL, NULL); 7225 nla_put_failure: 7226 nlmsg_free(msg); 7227 return -ENOBUFS; 7228 } 7229 7230 7231 /* Set kernel driver on given frequency (MHz) */ 7232 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq) 7233 { 7234 struct i802_bss *bss = priv; 7235 return wpa_driver_nl80211_set_freq(bss, freq->freq, freq->ht_enabled, 7236 freq->sec_channel_offset); 7237 } 7238 7239 7240 #if defined(HOSTAPD) || defined(CONFIG_AP) 7241 7242 static inline int min_int(int a, int b) 7243 { 7244 if (a < b) 7245 return a; 7246 return b; 7247 } 7248 7249 7250 static int get_key_handler(struct nl_msg *msg, void *arg) 7251 { 7252 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7253 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7254 7255 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7256 genlmsg_attrlen(gnlh, 0), NULL); 7257 7258 /* 7259 * TODO: validate the key index and mac address! 7260 * Otherwise, there's a race condition as soon as 7261 * the kernel starts sending key notifications. 7262 */ 7263 7264 if (tb[NL80211_ATTR_KEY_SEQ]) 7265 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]), 7266 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6)); 7267 return NL_SKIP; 7268 } 7269 7270 7271 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr, 7272 int idx, u8 *seq) 7273 { 7274 struct i802_bss *bss = priv; 7275 struct wpa_driver_nl80211_data *drv = bss->drv; 7276 struct nl_msg *msg; 7277 7278 msg = nlmsg_alloc(); 7279 if (!msg) 7280 return -ENOMEM; 7281 7282 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY); 7283 7284 if (addr) 7285 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7286 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx); 7287 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface)); 7288 7289 memset(seq, 0, 6); 7290 7291 return send_and_recv_msgs(drv, msg, get_key_handler, seq); 7292 nla_put_failure: 7293 nlmsg_free(msg); 7294 return -ENOBUFS; 7295 } 7296 7297 7298 static int i802_set_rts(void *priv, int rts) 7299 { 7300 struct i802_bss *bss = priv; 7301 struct wpa_driver_nl80211_data *drv = bss->drv; 7302 struct nl_msg *msg; 7303 int ret = -ENOBUFS; 7304 u32 val; 7305 7306 msg = nlmsg_alloc(); 7307 if (!msg) 7308 return -ENOMEM; 7309 7310 if (rts >= 2347) 7311 val = (u32) -1; 7312 else 7313 val = rts; 7314 7315 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7316 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7317 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val); 7318 7319 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7320 msg = NULL; 7321 if (!ret) 7322 return 0; 7323 nla_put_failure: 7324 nlmsg_free(msg); 7325 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: " 7326 "%d (%s)", rts, ret, strerror(-ret)); 7327 return ret; 7328 } 7329 7330 7331 static int i802_set_frag(void *priv, int frag) 7332 { 7333 struct i802_bss *bss = priv; 7334 struct wpa_driver_nl80211_data *drv = bss->drv; 7335 struct nl_msg *msg; 7336 int ret = -ENOBUFS; 7337 u32 val; 7338 7339 msg = nlmsg_alloc(); 7340 if (!msg) 7341 return -ENOMEM; 7342 7343 if (frag >= 2346) 7344 val = (u32) -1; 7345 else 7346 val = frag; 7347 7348 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7349 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7350 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val); 7351 7352 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7353 msg = NULL; 7354 if (!ret) 7355 return 0; 7356 nla_put_failure: 7357 nlmsg_free(msg); 7358 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold " 7359 "%d: %d (%s)", frag, ret, strerror(-ret)); 7360 return ret; 7361 } 7362 7363 7364 static int i802_flush(void *priv) 7365 { 7366 struct i802_bss *bss = priv; 7367 struct wpa_driver_nl80211_data *drv = bss->drv; 7368 struct nl_msg *msg; 7369 int res; 7370 7371 msg = nlmsg_alloc(); 7372 if (!msg) 7373 return -1; 7374 7375 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 7376 7377 /* 7378 * XXX: FIX! this needs to flush all VLANs too 7379 */ 7380 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7381 if_nametoindex(bss->ifname)); 7382 7383 res = send_and_recv_msgs(drv, msg, NULL, NULL); 7384 if (res) { 7385 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d " 7386 "(%s)", res, strerror(-res)); 7387 } 7388 return res; 7389 nla_put_failure: 7390 nlmsg_free(msg); 7391 return -ENOBUFS; 7392 } 7393 7394 #endif /* HOSTAPD || CONFIG_AP */ 7395 7396 7397 static int get_sta_handler(struct nl_msg *msg, void *arg) 7398 { 7399 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7400 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7401 struct hostap_sta_driver_data *data = arg; 7402 struct nlattr *stats[NL80211_STA_INFO_MAX + 1]; 7403 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = { 7404 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 }, 7405 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 }, 7406 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 }, 7407 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 }, 7408 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 }, 7409 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 }, 7410 }; 7411 7412 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7413 genlmsg_attrlen(gnlh, 0), NULL); 7414 7415 /* 7416 * TODO: validate the interface and mac address! 7417 * Otherwise, there's a race condition as soon as 7418 * the kernel starts sending station notifications. 7419 */ 7420 7421 if (!tb[NL80211_ATTR_STA_INFO]) { 7422 wpa_printf(MSG_DEBUG, "sta stats missing!"); 7423 return NL_SKIP; 7424 } 7425 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX, 7426 tb[NL80211_ATTR_STA_INFO], 7427 stats_policy)) { 7428 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!"); 7429 return NL_SKIP; 7430 } 7431 7432 if (stats[NL80211_STA_INFO_INACTIVE_TIME]) 7433 data->inactive_msec = 7434 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]); 7435 if (stats[NL80211_STA_INFO_RX_BYTES]) 7436 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]); 7437 if (stats[NL80211_STA_INFO_TX_BYTES]) 7438 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]); 7439 if (stats[NL80211_STA_INFO_RX_PACKETS]) 7440 data->rx_packets = 7441 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]); 7442 if (stats[NL80211_STA_INFO_TX_PACKETS]) 7443 data->tx_packets = 7444 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]); 7445 if (stats[NL80211_STA_INFO_TX_FAILED]) 7446 data->tx_retry_failed = 7447 nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]); 7448 7449 return NL_SKIP; 7450 } 7451 7452 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data, 7453 const u8 *addr) 7454 { 7455 struct i802_bss *bss = priv; 7456 struct wpa_driver_nl80211_data *drv = bss->drv; 7457 struct nl_msg *msg; 7458 7459 os_memset(data, 0, sizeof(*data)); 7460 msg = nlmsg_alloc(); 7461 if (!msg) 7462 return -ENOMEM; 7463 7464 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 7465 7466 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7467 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 7468 7469 return send_and_recv_msgs(drv, msg, get_sta_handler, data); 7470 nla_put_failure: 7471 nlmsg_free(msg); 7472 return -ENOBUFS; 7473 } 7474 7475 7476 #if defined(HOSTAPD) || defined(CONFIG_AP) 7477 7478 static int i802_set_tx_queue_params(void *priv, int queue, int aifs, 7479 int cw_min, int cw_max, int burst_time) 7480 { 7481 struct i802_bss *bss = priv; 7482 struct wpa_driver_nl80211_data *drv = bss->drv; 7483 struct nl_msg *msg; 7484 struct nlattr *txq, *params; 7485 7486 msg = nlmsg_alloc(); 7487 if (!msg) 7488 return -1; 7489 7490 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7491 7492 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 7493 7494 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS); 7495 if (!txq) 7496 goto nla_put_failure; 7497 7498 /* We are only sending parameters for a single TXQ at a time */ 7499 params = nla_nest_start(msg, 1); 7500 if (!params) 7501 goto nla_put_failure; 7502 7503 switch (queue) { 7504 case 0: 7505 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO); 7506 break; 7507 case 1: 7508 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI); 7509 break; 7510 case 2: 7511 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE); 7512 break; 7513 case 3: 7514 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK); 7515 break; 7516 } 7517 /* Burst time is configured in units of 0.1 msec and TXOP parameter in 7518 * 32 usec, so need to convert the value here. */ 7519 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32); 7520 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min); 7521 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max); 7522 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs); 7523 7524 nla_nest_end(msg, params); 7525 7526 nla_nest_end(msg, txq); 7527 7528 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 7529 return 0; 7530 msg = NULL; 7531 nla_put_failure: 7532 nlmsg_free(msg); 7533 return -1; 7534 } 7535 7536 7537 static int i802_set_sta_vlan(void *priv, const u8 *addr, 7538 const char *ifname, int vlan_id) 7539 { 7540 struct i802_bss *bss = priv; 7541 struct wpa_driver_nl80211_data *drv = bss->drv; 7542 struct nl_msg *msg; 7543 int ret = -ENOBUFS; 7544 7545 msg = nlmsg_alloc(); 7546 if (!msg) 7547 return -ENOMEM; 7548 7549 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 7550 7551 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7552 if_nametoindex(bss->ifname)); 7553 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7554 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN, 7555 if_nametoindex(ifname)); 7556 7557 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7558 msg = NULL; 7559 if (ret < 0) { 7560 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr=" 7561 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)", 7562 MAC2STR(addr), ifname, vlan_id, ret, 7563 strerror(-ret)); 7564 } 7565 nla_put_failure: 7566 nlmsg_free(msg); 7567 return ret; 7568 } 7569 7570 7571 static int i802_get_inact_sec(void *priv, const u8 *addr) 7572 { 7573 struct hostap_sta_driver_data data; 7574 int ret; 7575 7576 data.inactive_msec = (unsigned long) -1; 7577 ret = i802_read_sta_data(priv, &data, addr); 7578 if (ret || data.inactive_msec == (unsigned long) -1) 7579 return -1; 7580 return data.inactive_msec / 1000; 7581 } 7582 7583 7584 static int i802_sta_clear_stats(void *priv, const u8 *addr) 7585 { 7586 #if 0 7587 /* TODO */ 7588 #endif 7589 return 0; 7590 } 7591 7592 7593 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, 7594 int reason) 7595 { 7596 struct i802_bss *bss = priv; 7597 struct wpa_driver_nl80211_data *drv = bss->drv; 7598 struct ieee80211_mgmt mgmt; 7599 7600 if (drv->device_ap_sme) 7601 return wpa_driver_nl80211_sta_remove(bss, addr); 7602 7603 memset(&mgmt, 0, sizeof(mgmt)); 7604 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 7605 WLAN_FC_STYPE_DEAUTH); 7606 memcpy(mgmt.da, addr, ETH_ALEN); 7607 memcpy(mgmt.sa, own_addr, ETH_ALEN); 7608 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 7609 mgmt.u.deauth.reason_code = host_to_le16(reason); 7610 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 7611 IEEE80211_HDRLEN + 7612 sizeof(mgmt.u.deauth), 0); 7613 } 7614 7615 7616 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr, 7617 int reason) 7618 { 7619 struct i802_bss *bss = priv; 7620 struct wpa_driver_nl80211_data *drv = bss->drv; 7621 struct ieee80211_mgmt mgmt; 7622 7623 if (drv->device_ap_sme) 7624 return wpa_driver_nl80211_sta_remove(bss, addr); 7625 7626 memset(&mgmt, 0, sizeof(mgmt)); 7627 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 7628 WLAN_FC_STYPE_DISASSOC); 7629 memcpy(mgmt.da, addr, ETH_ALEN); 7630 memcpy(mgmt.sa, own_addr, ETH_ALEN); 7631 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 7632 mgmt.u.disassoc.reason_code = host_to_le16(reason); 7633 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 7634 IEEE80211_HDRLEN + 7635 sizeof(mgmt.u.disassoc), 0); 7636 } 7637 7638 #endif /* HOSTAPD || CONFIG_AP */ 7639 7640 #ifdef HOSTAPD 7641 7642 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 7643 { 7644 int i; 7645 int *old; 7646 7647 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d", 7648 ifidx); 7649 for (i = 0; i < drv->num_if_indices; i++) { 7650 if (drv->if_indices[i] == 0) { 7651 drv->if_indices[i] = ifidx; 7652 return; 7653 } 7654 } 7655 7656 if (drv->if_indices != drv->default_if_indices) 7657 old = drv->if_indices; 7658 else 7659 old = NULL; 7660 7661 drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1, 7662 sizeof(int)); 7663 if (!drv->if_indices) { 7664 if (!old) 7665 drv->if_indices = drv->default_if_indices; 7666 else 7667 drv->if_indices = old; 7668 wpa_printf(MSG_ERROR, "Failed to reallocate memory for " 7669 "interfaces"); 7670 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx); 7671 return; 7672 } else if (!old) 7673 os_memcpy(drv->if_indices, drv->default_if_indices, 7674 sizeof(drv->default_if_indices)); 7675 drv->if_indices[drv->num_if_indices] = ifidx; 7676 drv->num_if_indices++; 7677 } 7678 7679 7680 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 7681 { 7682 int i; 7683 7684 for (i = 0; i < drv->num_if_indices; i++) { 7685 if (drv->if_indices[i] == ifidx) { 7686 drv->if_indices[i] = 0; 7687 break; 7688 } 7689 } 7690 } 7691 7692 7693 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 7694 { 7695 int i; 7696 7697 for (i = 0; i < drv->num_if_indices; i++) 7698 if (drv->if_indices[i] == ifidx) 7699 return 1; 7700 7701 return 0; 7702 } 7703 7704 7705 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val, 7706 const char *bridge_ifname) 7707 { 7708 struct i802_bss *bss = priv; 7709 struct wpa_driver_nl80211_data *drv = bss->drv; 7710 char name[IFNAMSIZ + 1]; 7711 7712 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid); 7713 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR 7714 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name); 7715 if (val) { 7716 if (!if_nametoindex(name)) { 7717 if (nl80211_create_iface(drv, name, 7718 NL80211_IFTYPE_AP_VLAN, 7719 NULL, 1) < 0) 7720 return -1; 7721 if (bridge_ifname && 7722 linux_br_add_if(drv->global->ioctl_sock, 7723 bridge_ifname, name) < 0) 7724 return -1; 7725 } 7726 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) { 7727 wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA " 7728 "interface %s up", name); 7729 } 7730 return i802_set_sta_vlan(priv, addr, name, 0); 7731 } else { 7732 if (bridge_ifname) 7733 linux_br_del_if(drv->global->ioctl_sock, bridge_ifname, 7734 name); 7735 7736 i802_set_sta_vlan(priv, addr, bss->ifname, 0); 7737 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN, 7738 name); 7739 } 7740 } 7741 7742 7743 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx) 7744 { 7745 struct wpa_driver_nl80211_data *drv = eloop_ctx; 7746 struct sockaddr_ll lladdr; 7747 unsigned char buf[3000]; 7748 int len; 7749 socklen_t fromlen = sizeof(lladdr); 7750 7751 len = recvfrom(sock, buf, sizeof(buf), 0, 7752 (struct sockaddr *)&lladdr, &fromlen); 7753 if (len < 0) { 7754 perror("recv"); 7755 return; 7756 } 7757 7758 if (have_ifidx(drv, lladdr.sll_ifindex)) 7759 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len); 7760 } 7761 7762 7763 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv, 7764 struct i802_bss *bss, 7765 const char *brname, const char *ifname) 7766 { 7767 int ifindex; 7768 char in_br[IFNAMSIZ]; 7769 7770 os_strlcpy(bss->brname, brname, IFNAMSIZ); 7771 ifindex = if_nametoindex(brname); 7772 if (ifindex == 0) { 7773 /* 7774 * Bridge was configured, but the bridge device does 7775 * not exist. Try to add it now. 7776 */ 7777 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) { 7778 wpa_printf(MSG_ERROR, "nl80211: Failed to add the " 7779 "bridge interface %s: %s", 7780 brname, strerror(errno)); 7781 return -1; 7782 } 7783 bss->added_bridge = 1; 7784 add_ifidx(drv, if_nametoindex(brname)); 7785 } 7786 7787 if (linux_br_get(in_br, ifname) == 0) { 7788 if (os_strcmp(in_br, brname) == 0) 7789 return 0; /* already in the bridge */ 7790 7791 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from " 7792 "bridge %s", ifname, in_br); 7793 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) < 7794 0) { 7795 wpa_printf(MSG_ERROR, "nl80211: Failed to " 7796 "remove interface %s from bridge " 7797 "%s: %s", 7798 ifname, brname, strerror(errno)); 7799 return -1; 7800 } 7801 } 7802 7803 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s", 7804 ifname, brname); 7805 if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) { 7806 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s " 7807 "into bridge %s: %s", 7808 ifname, brname, strerror(errno)); 7809 return -1; 7810 } 7811 bss->added_if_into_bridge = 1; 7812 7813 return 0; 7814 } 7815 7816 7817 static void *i802_init(struct hostapd_data *hapd, 7818 struct wpa_init_params *params) 7819 { 7820 struct wpa_driver_nl80211_data *drv; 7821 struct i802_bss *bss; 7822 size_t i; 7823 char brname[IFNAMSIZ]; 7824 int ifindex, br_ifindex; 7825 int br_added = 0; 7826 7827 bss = wpa_driver_nl80211_init(hapd, params->ifname, 7828 params->global_priv); 7829 if (bss == NULL) 7830 return NULL; 7831 7832 drv = bss->drv; 7833 drv->nlmode = NL80211_IFTYPE_AP; 7834 drv->eapol_sock = -1; 7835 7836 if (linux_br_get(brname, params->ifname) == 0) { 7837 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s", 7838 params->ifname, brname); 7839 br_ifindex = if_nametoindex(brname); 7840 } else { 7841 brname[0] = '\0'; 7842 br_ifindex = 0; 7843 } 7844 7845 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int); 7846 drv->if_indices = drv->default_if_indices; 7847 for (i = 0; i < params->num_bridge; i++) { 7848 if (params->bridge[i]) { 7849 ifindex = if_nametoindex(params->bridge[i]); 7850 if (ifindex) 7851 add_ifidx(drv, ifindex); 7852 if (ifindex == br_ifindex) 7853 br_added = 1; 7854 } 7855 } 7856 if (!br_added && br_ifindex && 7857 (params->num_bridge == 0 || !params->bridge[0])) 7858 add_ifidx(drv, br_ifindex); 7859 7860 /* start listening for EAPOL on the default AP interface */ 7861 add_ifidx(drv, drv->ifindex); 7862 7863 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0)) 7864 goto failed; 7865 7866 if (params->bssid) { 7867 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 7868 params->bssid)) 7869 goto failed; 7870 } 7871 7872 if (wpa_driver_nl80211_set_mode(bss, drv->nlmode)) { 7873 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s " 7874 "into AP mode", bss->ifname); 7875 goto failed; 7876 } 7877 7878 if (params->num_bridge && params->bridge[0] && 7879 i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0) 7880 goto failed; 7881 7882 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) 7883 goto failed; 7884 7885 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE)); 7886 if (drv->eapol_sock < 0) { 7887 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)"); 7888 goto failed; 7889 } 7890 7891 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL)) 7892 { 7893 printf("Could not register read socket for eapol\n"); 7894 goto failed; 7895 } 7896 7897 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 7898 params->own_addr)) 7899 goto failed; 7900 7901 memcpy(bss->addr, params->own_addr, ETH_ALEN); 7902 7903 return bss; 7904 7905 failed: 7906 wpa_driver_nl80211_deinit(bss); 7907 return NULL; 7908 } 7909 7910 7911 static void i802_deinit(void *priv) 7912 { 7913 wpa_driver_nl80211_deinit(priv); 7914 } 7915 7916 #endif /* HOSTAPD */ 7917 7918 7919 static enum nl80211_iftype wpa_driver_nl80211_if_type( 7920 enum wpa_driver_if_type type) 7921 { 7922 switch (type) { 7923 case WPA_IF_STATION: 7924 return NL80211_IFTYPE_STATION; 7925 case WPA_IF_P2P_CLIENT: 7926 case WPA_IF_P2P_GROUP: 7927 return NL80211_IFTYPE_P2P_CLIENT; 7928 case WPA_IF_AP_VLAN: 7929 return NL80211_IFTYPE_AP_VLAN; 7930 case WPA_IF_AP_BSS: 7931 return NL80211_IFTYPE_AP; 7932 case WPA_IF_P2P_GO: 7933 return NL80211_IFTYPE_P2P_GO; 7934 } 7935 return -1; 7936 } 7937 7938 7939 #ifdef CONFIG_P2P 7940 7941 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr) 7942 { 7943 struct wpa_driver_nl80211_data *drv; 7944 dl_list_for_each(drv, &global->interfaces, 7945 struct wpa_driver_nl80211_data, list) { 7946 if (os_memcmp(addr, drv->first_bss.addr, ETH_ALEN) == 0) 7947 return 1; 7948 } 7949 return 0; 7950 } 7951 7952 7953 static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv, 7954 u8 *new_addr) 7955 { 7956 unsigned int idx; 7957 7958 if (!drv->global) 7959 return -1; 7960 7961 os_memcpy(new_addr, drv->first_bss.addr, ETH_ALEN); 7962 for (idx = 0; idx < 64; idx++) { 7963 new_addr[0] = drv->first_bss.addr[0] | 0x02; 7964 new_addr[0] ^= idx << 2; 7965 if (!nl80211_addr_in_use(drv->global, new_addr)) 7966 break; 7967 } 7968 if (idx == 64) 7969 return -1; 7970 7971 wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address " 7972 MACSTR, MAC2STR(new_addr)); 7973 7974 return 0; 7975 } 7976 7977 #endif /* CONFIG_P2P */ 7978 7979 7980 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type, 7981 const char *ifname, const u8 *addr, 7982 void *bss_ctx, void **drv_priv, 7983 char *force_ifname, u8 *if_addr, 7984 const char *bridge) 7985 { 7986 struct i802_bss *bss = priv; 7987 struct wpa_driver_nl80211_data *drv = bss->drv; 7988 int ifidx; 7989 #ifdef HOSTAPD 7990 struct i802_bss *new_bss = NULL; 7991 7992 if (type == WPA_IF_AP_BSS) { 7993 new_bss = os_zalloc(sizeof(*new_bss)); 7994 if (new_bss == NULL) 7995 return -1; 7996 } 7997 #endif /* HOSTAPD */ 7998 7999 if (addr) 8000 os_memcpy(if_addr, addr, ETH_ALEN); 8001 ifidx = nl80211_create_iface(drv, ifname, 8002 wpa_driver_nl80211_if_type(type), addr, 8003 0); 8004 if (ifidx < 0) { 8005 #ifdef HOSTAPD 8006 os_free(new_bss); 8007 #endif /* HOSTAPD */ 8008 return -1; 8009 } 8010 8011 if (!addr && 8012 linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8013 if_addr) < 0) { 8014 nl80211_remove_iface(drv, ifidx); 8015 return -1; 8016 } 8017 8018 #ifdef CONFIG_P2P 8019 if (!addr && 8020 (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP || 8021 type == WPA_IF_P2P_GO)) { 8022 /* Enforce unique P2P Interface Address */ 8023 u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN]; 8024 8025 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8026 own_addr) < 0 || 8027 linux_get_ifhwaddr(drv->global->ioctl_sock, ifname, 8028 new_addr) < 0) { 8029 nl80211_remove_iface(drv, ifidx); 8030 return -1; 8031 } 8032 if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) { 8033 wpa_printf(MSG_DEBUG, "nl80211: Allocate new address " 8034 "for P2P group interface"); 8035 if (nl80211_p2p_interface_addr(drv, new_addr) < 0) { 8036 nl80211_remove_iface(drv, ifidx); 8037 return -1; 8038 } 8039 if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, 8040 new_addr) < 0) { 8041 nl80211_remove_iface(drv, ifidx); 8042 return -1; 8043 } 8044 } 8045 os_memcpy(if_addr, new_addr, ETH_ALEN); 8046 } 8047 #endif /* CONFIG_P2P */ 8048 8049 #ifdef HOSTAPD 8050 if (bridge && 8051 i802_check_bridge(drv, new_bss, bridge, ifname) < 0) { 8052 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new " 8053 "interface %s to a bridge %s", ifname, bridge); 8054 nl80211_remove_iface(drv, ifidx); 8055 os_free(new_bss); 8056 return -1; 8057 } 8058 8059 if (type == WPA_IF_AP_BSS) { 8060 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1)) 8061 { 8062 nl80211_remove_iface(drv, ifidx); 8063 os_free(new_bss); 8064 return -1; 8065 } 8066 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ); 8067 os_memcpy(new_bss->addr, if_addr, ETH_ALEN); 8068 new_bss->ifindex = ifidx; 8069 new_bss->drv = drv; 8070 new_bss->next = drv->first_bss.next; 8071 new_bss->freq = drv->first_bss.freq; 8072 drv->first_bss.next = new_bss; 8073 if (drv_priv) 8074 *drv_priv = new_bss; 8075 nl80211_init_bss(new_bss); 8076 8077 /* Subscribe management frames for this WPA_IF_AP_BSS */ 8078 if (nl80211_setup_ap(new_bss)) 8079 return -1; 8080 } 8081 #endif /* HOSTAPD */ 8082 8083 if (drv->global) 8084 drv->global->if_add_ifindex = ifidx; 8085 8086 return 0; 8087 } 8088 8089 8090 static int wpa_driver_nl80211_if_remove(void *priv, 8091 enum wpa_driver_if_type type, 8092 const char *ifname) 8093 { 8094 struct i802_bss *bss = priv; 8095 struct wpa_driver_nl80211_data *drv = bss->drv; 8096 int ifindex = if_nametoindex(ifname); 8097 8098 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d", 8099 __func__, type, ifname, ifindex); 8100 if (ifindex <= 0) 8101 return -1; 8102 8103 nl80211_remove_iface(drv, ifindex); 8104 8105 #ifdef HOSTAPD 8106 if (type != WPA_IF_AP_BSS) 8107 return 0; 8108 8109 if (bss->added_if_into_bridge) { 8110 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 8111 bss->ifname) < 0) 8112 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 8113 "interface %s from bridge %s: %s", 8114 bss->ifname, bss->brname, strerror(errno)); 8115 } 8116 if (bss->added_bridge) { 8117 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 8118 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 8119 "bridge %s: %s", 8120 bss->brname, strerror(errno)); 8121 } 8122 8123 if (bss != &drv->first_bss) { 8124 struct i802_bss *tbss; 8125 8126 for (tbss = &drv->first_bss; tbss; tbss = tbss->next) { 8127 if (tbss->next == bss) { 8128 tbss->next = bss->next; 8129 /* Unsubscribe management frames */ 8130 nl80211_teardown_ap(bss); 8131 nl80211_destroy_bss(bss); 8132 os_free(bss); 8133 bss = NULL; 8134 break; 8135 } 8136 } 8137 if (bss) 8138 wpa_printf(MSG_INFO, "nl80211: %s - could not find " 8139 "BSS %p in the list", __func__, bss); 8140 } 8141 #endif /* HOSTAPD */ 8142 8143 return 0; 8144 } 8145 8146 8147 static int cookie_handler(struct nl_msg *msg, void *arg) 8148 { 8149 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 8150 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 8151 u64 *cookie = arg; 8152 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 8153 genlmsg_attrlen(gnlh, 0), NULL); 8154 if (tb[NL80211_ATTR_COOKIE]) 8155 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 8156 return NL_SKIP; 8157 } 8158 8159 8160 static int nl80211_send_frame_cmd(struct i802_bss *bss, 8161 unsigned int freq, unsigned int wait, 8162 const u8 *buf, size_t buf_len, 8163 u64 *cookie_out, int no_cck, int no_ack, 8164 int offchanok) 8165 { 8166 struct wpa_driver_nl80211_data *drv = bss->drv; 8167 struct nl_msg *msg; 8168 u64 cookie; 8169 int ret = -1; 8170 8171 msg = nlmsg_alloc(); 8172 if (!msg) 8173 return -1; 8174 8175 wpa_printf(MSG_DEBUG, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d " 8176 "no_ack=%d offchanok=%d", 8177 freq, wait, no_cck, no_ack, offchanok); 8178 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME); 8179 8180 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8181 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 8182 if (wait) 8183 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait); 8184 if (offchanok && (drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX)) 8185 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK); 8186 if (no_cck) 8187 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 8188 if (no_ack) 8189 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK); 8190 8191 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf); 8192 8193 cookie = 0; 8194 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 8195 msg = NULL; 8196 if (ret) { 8197 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d " 8198 "(%s) (freq=%u wait=%u)", ret, strerror(-ret), 8199 freq, wait); 8200 goto nla_put_failure; 8201 } 8202 wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted%s; " 8203 "cookie 0x%llx", no_ack ? " (no ACK)" : "", 8204 (long long unsigned int) cookie); 8205 8206 if (cookie_out) 8207 *cookie_out = no_ack ? (u64) -1 : cookie; 8208 8209 nla_put_failure: 8210 nlmsg_free(msg); 8211 return ret; 8212 } 8213 8214 8215 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq, 8216 unsigned int wait_time, 8217 const u8 *dst, const u8 *src, 8218 const u8 *bssid, 8219 const u8 *data, size_t data_len, 8220 int no_cck) 8221 { 8222 struct i802_bss *bss = priv; 8223 struct wpa_driver_nl80211_data *drv = bss->drv; 8224 int ret = -1; 8225 u8 *buf; 8226 struct ieee80211_hdr *hdr; 8227 8228 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, " 8229 "freq=%u MHz wait=%d ms no_cck=%d)", 8230 drv->ifindex, freq, wait_time, no_cck); 8231 8232 buf = os_zalloc(24 + data_len); 8233 if (buf == NULL) 8234 return ret; 8235 os_memcpy(buf + 24, data, data_len); 8236 hdr = (struct ieee80211_hdr *) buf; 8237 hdr->frame_control = 8238 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION); 8239 os_memcpy(hdr->addr1, dst, ETH_ALEN); 8240 os_memcpy(hdr->addr2, src, ETH_ALEN); 8241 os_memcpy(hdr->addr3, bssid, ETH_ALEN); 8242 8243 if (is_ap_interface(drv->nlmode)) 8244 ret = wpa_driver_nl80211_send_mlme_freq(priv, buf, 8245 24 + data_len, 8246 0, freq, no_cck, 1, 8247 wait_time); 8248 else 8249 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf, 8250 24 + data_len, 8251 &drv->send_action_cookie, 8252 no_cck, 0, 1); 8253 8254 os_free(buf); 8255 return ret; 8256 } 8257 8258 8259 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv) 8260 { 8261 struct i802_bss *bss = priv; 8262 struct wpa_driver_nl80211_data *drv = bss->drv; 8263 struct nl_msg *msg; 8264 int ret; 8265 8266 msg = nlmsg_alloc(); 8267 if (!msg) 8268 return; 8269 8270 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL); 8271 8272 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8273 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie); 8274 8275 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8276 msg = NULL; 8277 if (ret) 8278 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d " 8279 "(%s)", ret, strerror(-ret)); 8280 8281 nla_put_failure: 8282 nlmsg_free(msg); 8283 } 8284 8285 8286 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq, 8287 unsigned int duration) 8288 { 8289 struct i802_bss *bss = priv; 8290 struct wpa_driver_nl80211_data *drv = bss->drv; 8291 struct nl_msg *msg; 8292 int ret; 8293 u64 cookie; 8294 8295 msg = nlmsg_alloc(); 8296 if (!msg) 8297 return -1; 8298 8299 nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL); 8300 8301 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8302 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 8303 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration); 8304 8305 cookie = 0; 8306 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 8307 msg = NULL; 8308 if (ret == 0) { 8309 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie " 8310 "0x%llx for freq=%u MHz duration=%u", 8311 (long long unsigned int) cookie, freq, duration); 8312 drv->remain_on_chan_cookie = cookie; 8313 drv->pending_remain_on_chan = 1; 8314 return 0; 8315 } 8316 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel " 8317 "(freq=%d duration=%u): %d (%s)", 8318 freq, duration, ret, strerror(-ret)); 8319 nla_put_failure: 8320 nlmsg_free(msg); 8321 return -1; 8322 } 8323 8324 8325 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv) 8326 { 8327 struct i802_bss *bss = priv; 8328 struct wpa_driver_nl80211_data *drv = bss->drv; 8329 struct nl_msg *msg; 8330 int ret; 8331 8332 if (!drv->pending_remain_on_chan) { 8333 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel " 8334 "to cancel"); 8335 return -1; 8336 } 8337 8338 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie " 8339 "0x%llx", 8340 (long long unsigned int) drv->remain_on_chan_cookie); 8341 8342 msg = nlmsg_alloc(); 8343 if (!msg) 8344 return -1; 8345 8346 nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL); 8347 8348 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8349 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie); 8350 8351 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8352 msg = NULL; 8353 if (ret == 0) 8354 return 0; 8355 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: " 8356 "%d (%s)", ret, strerror(-ret)); 8357 nla_put_failure: 8358 nlmsg_free(msg); 8359 return -1; 8360 } 8361 8362 8363 static int wpa_driver_nl80211_probe_req_report(void *priv, int report) 8364 { 8365 struct i802_bss *bss = priv; 8366 struct wpa_driver_nl80211_data *drv = bss->drv; 8367 8368 if (!report) { 8369 if (bss->nl_preq && drv->device_ap_sme && 8370 is_ap_interface(drv->nlmode)) { 8371 /* 8372 * Do not disable Probe Request reporting that was 8373 * enabled in nl80211_setup_ap(). 8374 */ 8375 wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of " 8376 "Probe Request reporting nl_preq=%p while " 8377 "in AP mode", bss->nl_preq); 8378 } else if (bss->nl_preq) { 8379 wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request " 8380 "reporting nl_preq=%p", bss->nl_preq); 8381 eloop_unregister_read_sock( 8382 nl_socket_get_fd(bss->nl_preq)); 8383 nl_destroy_handles(&bss->nl_preq); 8384 } 8385 return 0; 8386 } 8387 8388 if (bss->nl_preq) { 8389 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting " 8390 "already on! nl_preq=%p", bss->nl_preq); 8391 return 0; 8392 } 8393 8394 bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq"); 8395 if (bss->nl_preq == NULL) 8396 return -1; 8397 wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request " 8398 "reporting nl_preq=%p", bss->nl_preq); 8399 8400 if (nl80211_register_frame(bss, bss->nl_preq, 8401 (WLAN_FC_TYPE_MGMT << 2) | 8402 (WLAN_FC_STYPE_PROBE_REQ << 4), 8403 NULL, 0) < 0) 8404 goto out_err; 8405 8406 eloop_register_read_sock(nl_socket_get_fd(bss->nl_preq), 8407 wpa_driver_nl80211_event_receive, bss->nl_cb, 8408 bss->nl_preq); 8409 8410 return 0; 8411 8412 out_err: 8413 nl_destroy_handles(&bss->nl_preq); 8414 return -1; 8415 } 8416 8417 8418 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 8419 int ifindex, int disabled) 8420 { 8421 struct nl_msg *msg; 8422 struct nlattr *bands, *band; 8423 int ret; 8424 8425 msg = nlmsg_alloc(); 8426 if (!msg) 8427 return -1; 8428 8429 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK); 8430 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 8431 8432 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES); 8433 if (!bands) 8434 goto nla_put_failure; 8435 8436 /* 8437 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything 8438 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS 8439 * rates. All 5 GHz rates are left enabled. 8440 */ 8441 band = nla_nest_start(msg, NL80211_BAND_2GHZ); 8442 if (!band) 8443 goto nla_put_failure; 8444 if (disabled) { 8445 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8, 8446 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 8447 } 8448 nla_nest_end(msg, band); 8449 8450 nla_nest_end(msg, bands); 8451 8452 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8453 msg = NULL; 8454 if (ret) { 8455 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d " 8456 "(%s)", ret, strerror(-ret)); 8457 } else 8458 drv->disabled_11b_rates = disabled; 8459 8460 return ret; 8461 8462 nla_put_failure: 8463 nlmsg_free(msg); 8464 return -1; 8465 } 8466 8467 8468 static int wpa_driver_nl80211_deinit_ap(void *priv) 8469 { 8470 struct i802_bss *bss = priv; 8471 struct wpa_driver_nl80211_data *drv = bss->drv; 8472 if (!is_ap_interface(drv->nlmode)) 8473 return -1; 8474 wpa_driver_nl80211_del_beacon(drv); 8475 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 8476 } 8477 8478 8479 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv) 8480 { 8481 struct i802_bss *bss = priv; 8482 struct wpa_driver_nl80211_data *drv = bss->drv; 8483 if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT) 8484 return -1; 8485 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 8486 } 8487 8488 8489 static void wpa_driver_nl80211_resume(void *priv) 8490 { 8491 struct i802_bss *bss = priv; 8492 struct wpa_driver_nl80211_data *drv = bss->drv; 8493 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { 8494 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on " 8495 "resume event"); 8496 } 8497 } 8498 8499 8500 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap, 8501 const u8 *ies, size_t ies_len) 8502 { 8503 struct i802_bss *bss = priv; 8504 struct wpa_driver_nl80211_data *drv = bss->drv; 8505 int ret; 8506 u8 *data, *pos; 8507 size_t data_len; 8508 const u8 *own_addr = bss->addr; 8509 8510 if (action != 1) { 8511 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action " 8512 "action %d", action); 8513 return -1; 8514 } 8515 8516 /* 8517 * Action frame payload: 8518 * Category[1] = 6 (Fast BSS Transition) 8519 * Action[1] = 1 (Fast BSS Transition Request) 8520 * STA Address 8521 * Target AP Address 8522 * FT IEs 8523 */ 8524 8525 data_len = 2 + 2 * ETH_ALEN + ies_len; 8526 data = os_malloc(data_len); 8527 if (data == NULL) 8528 return -1; 8529 pos = data; 8530 *pos++ = 0x06; /* FT Action category */ 8531 *pos++ = action; 8532 os_memcpy(pos, own_addr, ETH_ALEN); 8533 pos += ETH_ALEN; 8534 os_memcpy(pos, target_ap, ETH_ALEN); 8535 pos += ETH_ALEN; 8536 os_memcpy(pos, ies, ies_len); 8537 8538 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0, 8539 drv->bssid, own_addr, drv->bssid, 8540 data, data_len, 0); 8541 os_free(data); 8542 8543 return ret; 8544 } 8545 8546 8547 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis) 8548 { 8549 struct i802_bss *bss = priv; 8550 struct wpa_driver_nl80211_data *drv = bss->drv; 8551 struct nl_msg *msg, *cqm = NULL; 8552 int ret = -1; 8553 8554 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d " 8555 "hysteresis=%d", threshold, hysteresis); 8556 8557 msg = nlmsg_alloc(); 8558 if (!msg) 8559 return -1; 8560 8561 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM); 8562 8563 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8564 8565 cqm = nlmsg_alloc(); 8566 if (cqm == NULL) 8567 goto nla_put_failure; 8568 8569 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold); 8570 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis); 8571 if (nla_put_nested(msg, NL80211_ATTR_CQM, cqm) < 0) 8572 goto nla_put_failure; 8573 8574 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8575 msg = NULL; 8576 8577 nla_put_failure: 8578 nlmsg_free(cqm); 8579 nlmsg_free(msg); 8580 return ret; 8581 } 8582 8583 8584 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si) 8585 { 8586 struct i802_bss *bss = priv; 8587 struct wpa_driver_nl80211_data *drv = bss->drv; 8588 int res; 8589 8590 os_memset(si, 0, sizeof(*si)); 8591 res = nl80211_get_link_signal(drv, si); 8592 if (res != 0) 8593 return res; 8594 8595 return nl80211_get_link_noise(drv, si); 8596 } 8597 8598 8599 static int wpa_driver_nl80211_shared_freq(void *priv) 8600 { 8601 struct i802_bss *bss = priv; 8602 struct wpa_driver_nl80211_data *drv = bss->drv; 8603 struct wpa_driver_nl80211_data *driver; 8604 int freq = 0; 8605 8606 /* 8607 * If the same PHY is in connected state with some other interface, 8608 * then retrieve the assoc freq. 8609 */ 8610 wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s", 8611 drv->phyname); 8612 8613 dl_list_for_each(driver, &drv->global->interfaces, 8614 struct wpa_driver_nl80211_data, list) { 8615 if (drv == driver || 8616 os_strcmp(drv->phyname, driver->phyname) != 0 || 8617 #ifdef ANDROID_P2P 8618 (!driver->associated && !is_ap_interface(driver->nlmode))) 8619 #else 8620 !driver->associated) 8621 #endif 8622 continue; 8623 8624 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s " 8625 MACSTR, 8626 driver->phyname, driver->first_bss.ifname, 8627 MAC2STR(driver->first_bss.addr)); 8628 if (is_ap_interface(driver->nlmode)) 8629 freq = driver->first_bss.freq; 8630 else 8631 freq = nl80211_get_assoc_freq(driver); 8632 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d", 8633 drv->phyname, freq); 8634 } 8635 8636 if (!freq) 8637 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for " 8638 "PHY (%s) in associated state", drv->phyname); 8639 8640 return freq; 8641 } 8642 8643 8644 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len, 8645 int encrypt) 8646 { 8647 struct i802_bss *bss = priv; 8648 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0, 8649 0, 0, 0, 0); 8650 } 8651 8652 8653 static int nl80211_set_param(void *priv, const char *param) 8654 { 8655 wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param); 8656 if (param == NULL) 8657 return 0; 8658 8659 #ifdef CONFIG_P2P 8660 if (os_strstr(param, "use_p2p_group_interface=1")) { 8661 struct i802_bss *bss = priv; 8662 struct wpa_driver_nl80211_data *drv = bss->drv; 8663 8664 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 8665 "interface"); 8666 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 8667 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 8668 } 8669 #ifdef ANDROID_P2P 8670 if(os_strstr(param, "use_multi_chan_concurrent=1")) { 8671 struct i802_bss *bss = priv; 8672 struct wpa_driver_nl80211_data *drv = bss->drv; 8673 wpa_printf(MSG_DEBUG, "nl80211: Use Multi channel " 8674 "concurrency"); 8675 drv->capa.flags |= WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT; 8676 } 8677 #endif 8678 #endif /* CONFIG_P2P */ 8679 8680 return 0; 8681 } 8682 8683 8684 static void * nl80211_global_init(void) 8685 { 8686 struct nl80211_global *global; 8687 struct netlink_config *cfg; 8688 8689 global = os_zalloc(sizeof(*global)); 8690 if (global == NULL) 8691 return NULL; 8692 global->ioctl_sock = -1; 8693 dl_list_init(&global->interfaces); 8694 global->if_add_ifindex = -1; 8695 8696 cfg = os_zalloc(sizeof(*cfg)); 8697 if (cfg == NULL) 8698 goto err; 8699 8700 cfg->ctx = global; 8701 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink; 8702 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink; 8703 global->netlink = netlink_init(cfg); 8704 if (global->netlink == NULL) { 8705 os_free(cfg); 8706 goto err; 8707 } 8708 8709 if (wpa_driver_nl80211_init_nl_global(global) < 0) 8710 goto err; 8711 8712 global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0); 8713 if (global->ioctl_sock < 0) { 8714 perror("socket(PF_INET,SOCK_DGRAM)"); 8715 goto err; 8716 } 8717 8718 return global; 8719 8720 err: 8721 nl80211_global_deinit(global); 8722 return NULL; 8723 } 8724 8725 8726 static void nl80211_global_deinit(void *priv) 8727 { 8728 struct nl80211_global *global = priv; 8729 if (global == NULL) 8730 return; 8731 if (!dl_list_empty(&global->interfaces)) { 8732 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at " 8733 "nl80211_global_deinit", 8734 dl_list_len(&global->interfaces)); 8735 } 8736 8737 if (global->netlink) 8738 netlink_deinit(global->netlink); 8739 8740 nl_destroy_handles(&global->nl); 8741 8742 if (global->nl_event) { 8743 eloop_unregister_read_sock( 8744 nl_socket_get_fd(global->nl_event)); 8745 nl_destroy_handles(&global->nl_event); 8746 } 8747 8748 nl_cb_put(global->nl_cb); 8749 8750 if (global->ioctl_sock >= 0) 8751 close(global->ioctl_sock); 8752 8753 os_free(global); 8754 } 8755 8756 8757 static const char * nl80211_get_radio_name(void *priv) 8758 { 8759 struct i802_bss *bss = priv; 8760 struct wpa_driver_nl80211_data *drv = bss->drv; 8761 return drv->phyname; 8762 } 8763 8764 8765 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid, 8766 const u8 *pmkid) 8767 { 8768 struct nl_msg *msg; 8769 8770 msg = nlmsg_alloc(); 8771 if (!msg) 8772 return -ENOMEM; 8773 8774 nl80211_cmd(bss->drv, msg, 0, cmd); 8775 8776 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 8777 if (pmkid) 8778 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid); 8779 if (bssid) 8780 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); 8781 8782 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 8783 nla_put_failure: 8784 nlmsg_free(msg); 8785 return -ENOBUFS; 8786 } 8787 8788 8789 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 8790 { 8791 struct i802_bss *bss = priv; 8792 wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid)); 8793 return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid); 8794 } 8795 8796 8797 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 8798 { 8799 struct i802_bss *bss = priv; 8800 wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR, 8801 MAC2STR(bssid)); 8802 return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid); 8803 } 8804 8805 8806 static int nl80211_flush_pmkid(void *priv) 8807 { 8808 struct i802_bss *bss = priv; 8809 wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs"); 8810 return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL); 8811 } 8812 8813 8814 static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck, 8815 const u8 *replay_ctr) 8816 { 8817 struct i802_bss *bss = priv; 8818 struct wpa_driver_nl80211_data *drv = bss->drv; 8819 struct nlattr *replay_nested; 8820 struct nl_msg *msg; 8821 8822 msg = nlmsg_alloc(); 8823 if (!msg) 8824 return; 8825 8826 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 8827 8828 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8829 8830 replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 8831 if (!replay_nested) 8832 goto nla_put_failure; 8833 8834 NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek); 8835 NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck); 8836 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN, 8837 replay_ctr); 8838 8839 nla_nest_end(msg, replay_nested); 8840 8841 send_and_recv_msgs(drv, msg, NULL, NULL); 8842 return; 8843 nla_put_failure: 8844 nlmsg_free(msg); 8845 } 8846 8847 8848 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr, 8849 const u8 *addr, int qos) 8850 { 8851 /* send data frame to poll STA and check whether 8852 * this frame is ACKed */ 8853 struct { 8854 struct ieee80211_hdr hdr; 8855 u16 qos_ctl; 8856 } STRUCT_PACKED nulldata; 8857 size_t size; 8858 8859 /* Send data frame to poll STA and check whether this frame is ACKed */ 8860 8861 os_memset(&nulldata, 0, sizeof(nulldata)); 8862 8863 if (qos) { 8864 nulldata.hdr.frame_control = 8865 IEEE80211_FC(WLAN_FC_TYPE_DATA, 8866 WLAN_FC_STYPE_QOS_NULL); 8867 size = sizeof(nulldata); 8868 } else { 8869 nulldata.hdr.frame_control = 8870 IEEE80211_FC(WLAN_FC_TYPE_DATA, 8871 WLAN_FC_STYPE_NULLFUNC); 8872 size = sizeof(struct ieee80211_hdr); 8873 } 8874 8875 nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS); 8876 os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN); 8877 os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 8878 os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 8879 8880 if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0) < 0) 8881 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to " 8882 "send poll frame"); 8883 } 8884 8885 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr, 8886 int qos) 8887 { 8888 struct i802_bss *bss = priv; 8889 struct wpa_driver_nl80211_data *drv = bss->drv; 8890 struct nl_msg *msg; 8891 8892 if (!drv->poll_command_supported) { 8893 nl80211_send_null_frame(bss, own_addr, addr, qos); 8894 return; 8895 } 8896 8897 msg = nlmsg_alloc(); 8898 if (!msg) 8899 return; 8900 8901 nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT); 8902 8903 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8904 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 8905 8906 send_and_recv_msgs(drv, msg, NULL, NULL); 8907 return; 8908 nla_put_failure: 8909 nlmsg_free(msg); 8910 } 8911 8912 8913 static int nl80211_set_power_save(struct i802_bss *bss, int enabled) 8914 { 8915 struct nl_msg *msg; 8916 8917 msg = nlmsg_alloc(); 8918 if (!msg) 8919 return -ENOMEM; 8920 8921 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE); 8922 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8923 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, 8924 enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED); 8925 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 8926 nla_put_failure: 8927 nlmsg_free(msg); 8928 return -ENOBUFS; 8929 } 8930 8931 8932 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps, 8933 int ctwindow) 8934 { 8935 struct i802_bss *bss = priv; 8936 8937 wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d " 8938 "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow); 8939 8940 if (opp_ps != -1 || ctwindow != -1) 8941 #ifdef ANDROID_P2P 8942 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow); 8943 #else 8944 return -1; /* Not yet supported */ 8945 #endif 8946 8947 if (legacy_ps == -1) 8948 return 0; 8949 if (legacy_ps != 0 && legacy_ps != 1) 8950 return -1; /* Not yet supported */ 8951 8952 return nl80211_set_power_save(bss, legacy_ps); 8953 } 8954 8955 8956 #ifdef CONFIG_TDLS 8957 8958 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code, 8959 u8 dialog_token, u16 status_code, 8960 const u8 *buf, size_t len) 8961 { 8962 struct i802_bss *bss = priv; 8963 struct wpa_driver_nl80211_data *drv = bss->drv; 8964 struct nl_msg *msg; 8965 8966 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 8967 return -EOPNOTSUPP; 8968 8969 if (!dst) 8970 return -EINVAL; 8971 8972 msg = nlmsg_alloc(); 8973 if (!msg) 8974 return -ENOMEM; 8975 8976 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT); 8977 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8978 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst); 8979 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code); 8980 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token); 8981 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code); 8982 NLA_PUT(msg, NL80211_ATTR_IE, len, buf); 8983 8984 return send_and_recv_msgs(drv, msg, NULL, NULL); 8985 8986 nla_put_failure: 8987 nlmsg_free(msg); 8988 return -ENOBUFS; 8989 } 8990 8991 8992 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer) 8993 { 8994 struct i802_bss *bss = priv; 8995 struct wpa_driver_nl80211_data *drv = bss->drv; 8996 struct nl_msg *msg; 8997 enum nl80211_tdls_operation nl80211_oper; 8998 8999 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 9000 return -EOPNOTSUPP; 9001 9002 switch (oper) { 9003 case TDLS_DISCOVERY_REQ: 9004 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ; 9005 break; 9006 case TDLS_SETUP: 9007 nl80211_oper = NL80211_TDLS_SETUP; 9008 break; 9009 case TDLS_TEARDOWN: 9010 nl80211_oper = NL80211_TDLS_TEARDOWN; 9011 break; 9012 case TDLS_ENABLE_LINK: 9013 nl80211_oper = NL80211_TDLS_ENABLE_LINK; 9014 break; 9015 case TDLS_DISABLE_LINK: 9016 nl80211_oper = NL80211_TDLS_DISABLE_LINK; 9017 break; 9018 case TDLS_ENABLE: 9019 return 0; 9020 case TDLS_DISABLE: 9021 return 0; 9022 default: 9023 return -EINVAL; 9024 } 9025 9026 msg = nlmsg_alloc(); 9027 if (!msg) 9028 return -ENOMEM; 9029 9030 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER); 9031 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper); 9032 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 9033 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer); 9034 9035 return send_and_recv_msgs(drv, msg, NULL, NULL); 9036 9037 nla_put_failure: 9038 nlmsg_free(msg); 9039 return -ENOBUFS; 9040 } 9041 9042 #endif /* CONFIG TDLS */ 9043 9044 9045 #ifdef ANDROID 9046 9047 typedef struct android_wifi_priv_cmd { 9048 char *buf; 9049 int used_len; 9050 int total_len; 9051 } android_wifi_priv_cmd; 9052 9053 static int drv_errors = 0; 9054 9055 static void wpa_driver_send_hang_msg(struct wpa_driver_nl80211_data *drv) 9056 { 9057 drv_errors++; 9058 if (drv_errors > DRV_NUMBER_SEQUENTIAL_ERRORS) { 9059 drv_errors = 0; 9060 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED"); 9061 } 9062 } 9063 9064 9065 static int android_priv_cmd(struct i802_bss *bss, const char *cmd) 9066 { 9067 struct wpa_driver_nl80211_data *drv = bss->drv; 9068 struct ifreq ifr; 9069 android_wifi_priv_cmd priv_cmd; 9070 char buf[MAX_DRV_CMD_SIZE]; 9071 int ret; 9072 9073 os_memset(&ifr, 0, sizeof(ifr)); 9074 os_memset(&priv_cmd, 0, sizeof(priv_cmd)); 9075 os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 9076 9077 os_memset(buf, 0, sizeof(buf)); 9078 os_strlcpy(buf, cmd, sizeof(buf)); 9079 9080 priv_cmd.buf = buf; 9081 priv_cmd.used_len = sizeof(buf); 9082 priv_cmd.total_len = sizeof(buf); 9083 ifr.ifr_data = &priv_cmd; 9084 9085 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 9086 if (ret < 0) { 9087 wpa_printf(MSG_ERROR, "%s: failed to issue private commands", 9088 __func__); 9089 wpa_driver_send_hang_msg(drv); 9090 return ret; 9091 } 9092 9093 drv_errors = 0; 9094 return 0; 9095 } 9096 9097 9098 static int android_pno_start(struct i802_bss *bss, 9099 struct wpa_driver_scan_params *params) 9100 { 9101 struct wpa_driver_nl80211_data *drv = bss->drv; 9102 struct ifreq ifr; 9103 android_wifi_priv_cmd priv_cmd; 9104 int ret = 0, i = 0, bp; 9105 char buf[WEXT_PNO_MAX_COMMAND_SIZE]; 9106 9107 bp = WEXT_PNOSETUP_HEADER_SIZE; 9108 os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp); 9109 buf[bp++] = WEXT_PNO_TLV_PREFIX; 9110 buf[bp++] = WEXT_PNO_TLV_VERSION; 9111 buf[bp++] = WEXT_PNO_TLV_SUBVERSION; 9112 buf[bp++] = WEXT_PNO_TLV_RESERVED; 9113 9114 while (i < WEXT_PNO_AMOUNT && (size_t) i < params->num_ssids) { 9115 /* Check that there is enough space needed for 1 more SSID, the 9116 * other sections and null termination */ 9117 if ((bp + WEXT_PNO_SSID_HEADER_SIZE + MAX_SSID_LEN + 9118 WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int) sizeof(buf)) 9119 break; 9120 wpa_hexdump_ascii(MSG_DEBUG, "For PNO Scan", 9121 params->ssids[i].ssid, 9122 params->ssids[i].ssid_len); 9123 buf[bp++] = WEXT_PNO_SSID_SECTION; 9124 buf[bp++] = params->ssids[i].ssid_len; 9125 os_memcpy(&buf[bp], params->ssids[i].ssid, 9126 params->ssids[i].ssid_len); 9127 bp += params->ssids[i].ssid_len; 9128 i++; 9129 } 9130 9131 buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION; 9132 os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x", 9133 WEXT_PNO_SCAN_INTERVAL); 9134 bp += WEXT_PNO_SCAN_INTERVAL_LENGTH; 9135 9136 buf[bp++] = WEXT_PNO_REPEAT_SECTION; 9137 os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x", 9138 WEXT_PNO_REPEAT); 9139 bp += WEXT_PNO_REPEAT_LENGTH; 9140 9141 buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION; 9142 os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x", 9143 WEXT_PNO_MAX_REPEAT); 9144 bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1; 9145 9146 memset(&ifr, 0, sizeof(ifr)); 9147 memset(&priv_cmd, 0, sizeof(priv_cmd)); 9148 os_strncpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 9149 9150 priv_cmd.buf = buf; 9151 priv_cmd.used_len = bp; 9152 priv_cmd.total_len = bp; 9153 ifr.ifr_data = &priv_cmd; 9154 9155 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 9156 9157 if (ret < 0) { 9158 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d", 9159 ret); 9160 wpa_driver_send_hang_msg(drv); 9161 return ret; 9162 } 9163 9164 drv_errors = 0; 9165 9166 return android_priv_cmd(bss, "PNOFORCE 1"); 9167 } 9168 9169 9170 static int android_pno_stop(struct i802_bss *bss) 9171 { 9172 return android_priv_cmd(bss, "PNOFORCE 0"); 9173 } 9174 9175 #endif /* ANDROID */ 9176 9177 9178 const struct wpa_driver_ops wpa_driver_nl80211_ops = { 9179 .name = "nl80211", 9180 .desc = "Linux nl80211/cfg80211", 9181 .get_bssid = wpa_driver_nl80211_get_bssid, 9182 .get_ssid = wpa_driver_nl80211_get_ssid, 9183 .set_key = wpa_driver_nl80211_set_key, 9184 .scan2 = wpa_driver_nl80211_scan, 9185 .sched_scan = wpa_driver_nl80211_sched_scan, 9186 .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan, 9187 .get_scan_results2 = wpa_driver_nl80211_get_scan_results, 9188 .deauthenticate = wpa_driver_nl80211_deauthenticate, 9189 .disassociate = wpa_driver_nl80211_disassociate, 9190 .authenticate = wpa_driver_nl80211_authenticate, 9191 .associate = wpa_driver_nl80211_associate, 9192 .global_init = nl80211_global_init, 9193 .global_deinit = nl80211_global_deinit, 9194 .init2 = wpa_driver_nl80211_init, 9195 .deinit = wpa_driver_nl80211_deinit, 9196 .get_capa = wpa_driver_nl80211_get_capa, 9197 .set_operstate = wpa_driver_nl80211_set_operstate, 9198 .set_supp_port = wpa_driver_nl80211_set_supp_port, 9199 .set_country = wpa_driver_nl80211_set_country, 9200 .set_ap = wpa_driver_nl80211_set_ap, 9201 .if_add = wpa_driver_nl80211_if_add, 9202 .if_remove = wpa_driver_nl80211_if_remove, 9203 .send_mlme = wpa_driver_nl80211_send_mlme, 9204 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data, 9205 .sta_add = wpa_driver_nl80211_sta_add, 9206 .sta_remove = wpa_driver_nl80211_sta_remove, 9207 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol, 9208 .sta_set_flags = wpa_driver_nl80211_sta_set_flags, 9209 #ifdef HOSTAPD 9210 .hapd_init = i802_init, 9211 .hapd_deinit = i802_deinit, 9212 .set_wds_sta = i802_set_wds_sta, 9213 #endif /* HOSTAPD */ 9214 #if defined(HOSTAPD) || defined(CONFIG_AP) 9215 .get_seqnum = i802_get_seqnum, 9216 .flush = i802_flush, 9217 .get_inact_sec = i802_get_inact_sec, 9218 .sta_clear_stats = i802_sta_clear_stats, 9219 .set_rts = i802_set_rts, 9220 .set_frag = i802_set_frag, 9221 .set_tx_queue_params = i802_set_tx_queue_params, 9222 .set_sta_vlan = i802_set_sta_vlan, 9223 .sta_deauth = i802_sta_deauth, 9224 .sta_disassoc = i802_sta_disassoc, 9225 #endif /* HOSTAPD || CONFIG_AP */ 9226 .read_sta_data = i802_read_sta_data, 9227 .set_freq = i802_set_freq, 9228 .send_action = wpa_driver_nl80211_send_action, 9229 .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait, 9230 .remain_on_channel = wpa_driver_nl80211_remain_on_channel, 9231 .cancel_remain_on_channel = 9232 wpa_driver_nl80211_cancel_remain_on_channel, 9233 .probe_req_report = wpa_driver_nl80211_probe_req_report, 9234 .deinit_ap = wpa_driver_nl80211_deinit_ap, 9235 .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli, 9236 .resume = wpa_driver_nl80211_resume, 9237 .send_ft_action = nl80211_send_ft_action, 9238 .signal_monitor = nl80211_signal_monitor, 9239 .signal_poll = nl80211_signal_poll, 9240 .send_frame = nl80211_send_frame, 9241 .shared_freq = wpa_driver_nl80211_shared_freq, 9242 .set_param = nl80211_set_param, 9243 .get_radio_name = nl80211_get_radio_name, 9244 .add_pmkid = nl80211_add_pmkid, 9245 .remove_pmkid = nl80211_remove_pmkid, 9246 .flush_pmkid = nl80211_flush_pmkid, 9247 .set_rekey_info = nl80211_set_rekey_info, 9248 .poll_client = nl80211_poll_client, 9249 .set_p2p_powersave = nl80211_set_p2p_powersave, 9250 #ifdef CONFIG_TDLS 9251 .send_tdls_mgmt = nl80211_send_tdls_mgmt, 9252 .tdls_oper = nl80211_tdls_oper, 9253 #endif /* CONFIG_TDLS */ 9254 #ifdef ANDROID_P2P 9255 .set_noa = wpa_driver_set_p2p_noa, 9256 .get_noa = wpa_driver_get_p2p_noa, 9257 .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie, 9258 #endif 9259 #ifdef ANDROID 9260 .driver_cmd = wpa_driver_nl80211_driver_cmd, 9261 #endif 9262 }; 9263
