driver_nl80211.c revision 51b6ea882f234c14cd1fe1332a3840cf61fafcca
1/* 2 * Driver interaction with Linux nl80211/cfg80211 3 * Copyright (c) 2002-2012, Jouni Malinen <j@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@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 */ 77static uint32_t port_bitmap[32] = { 0 }; 78 79static 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 100static 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 112static 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 134static 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 157struct 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 169struct 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 180static void nl80211_global_deinit(void *priv); 181 182struct i802_bss { 183 struct wpa_driver_nl80211_data *drv; 184 struct i802_bss *next; 185 int ifindex; 186 char ifname[IFNAMSIZ + 1]; 187 char brname[IFNAMSIZ]; 188 unsigned int beacon_set:1; 189 unsigned int added_if_into_bridge:1; 190 unsigned int added_bridge:1; 191 unsigned int in_deinit:1; 192 193 u8 addr[ETH_ALEN]; 194 195 int freq; 196 197 void *ctx; 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 205struct 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 u8 *extended_capa, *extended_capa_mask; 218 unsigned int extended_capa_len; 219 int has_capability; 220 221 int operstate; 222 223 int scan_complete_events; 224 225 struct nl_cb *nl_cb; 226 227 u8 auth_bssid[ETH_ALEN]; 228 u8 bssid[ETH_ALEN]; 229 int associated; 230 u8 ssid[32]; 231 size_t ssid_len; 232 enum nl80211_iftype nlmode; 233 enum nl80211_iftype ap_scan_as_station; 234 unsigned int assoc_freq; 235 236 int monitor_sock; 237 int monitor_ifidx; 238 int monitor_refcount; 239 240 unsigned int disabled_11b_rates:1; 241 unsigned int pending_remain_on_chan:1; 242 unsigned int in_interface_list:1; 243 unsigned int device_ap_sme:1; 244 unsigned int poll_command_supported:1; 245 unsigned int data_tx_status:1; 246 unsigned int scan_for_auth:1; 247 unsigned int retry_auth:1; 248 unsigned int use_monitor:1; 249 unsigned int ignore_next_local_disconnect:1; 250 251 u64 remain_on_chan_cookie; 252 u64 send_action_cookie; 253 254 unsigned int last_mgmt_freq; 255 256 struct wpa_driver_scan_filter *filter_ssids; 257 size_t num_filter_ssids; 258 259 struct i802_bss first_bss; 260 261 int eapol_tx_sock; 262 263#ifdef HOSTAPD 264 int eapol_sock; /* socket for EAPOL frames */ 265 266 int default_if_indices[16]; 267 int *if_indices; 268 int num_if_indices; 269 270 int last_freq; 271 int last_freq_ht; 272#endif /* HOSTAPD */ 273 274 /* From failed authentication command */ 275 int auth_freq; 276 u8 auth_bssid_[ETH_ALEN]; 277 u8 auth_ssid[32]; 278 size_t auth_ssid_len; 279 int auth_alg; 280 u8 *auth_ie; 281 size_t auth_ie_len; 282 u8 auth_wep_key[4][16]; 283 size_t auth_wep_key_len[4]; 284 int auth_wep_tx_keyidx; 285 int auth_local_state_change; 286 int auth_p2p; 287}; 288 289 290static void wpa_driver_nl80211_deinit(struct i802_bss *bss); 291static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, 292 void *timeout_ctx); 293static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, 294 enum nl80211_iftype nlmode); 295static int 296wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv); 297static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 298 const u8 *addr, int cmd, u16 reason_code, 299 int local_state_change); 300static void nl80211_remove_monitor_interface( 301 struct wpa_driver_nl80211_data *drv); 302static int nl80211_send_frame_cmd(struct i802_bss *bss, 303 unsigned int freq, unsigned int wait, 304 const u8 *buf, size_t buf_len, u64 *cookie, 305 int no_cck, int no_ack, int offchanok); 306static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, 307 int report); 308#ifdef ANDROID 309static int android_pno_start(struct i802_bss *bss, 310 struct wpa_driver_scan_params *params); 311static int android_pno_stop(struct i802_bss *bss); 312#endif /* ANDROID */ 313#ifdef ANDROID_P2P 314int wpa_driver_set_p2p_noa(void *priv, u8 count, int start, int duration); 315int wpa_driver_get_p2p_noa(void *priv, u8 *buf, size_t len); 316int wpa_driver_set_p2p_ps(void *priv, int legacy_ps, int opp_ps, int ctwindow); 317int wpa_driver_set_ap_wps_p2p_ie(void *priv, const struct wpabuf *beacon, 318 const struct wpabuf *proberesp, 319 const struct wpabuf *assocresp); 320 321#endif 322#ifdef HOSTAPD 323static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 324static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 325static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 326static int wpa_driver_nl80211_if_remove(struct i802_bss *bss, 327 enum wpa_driver_if_type type, 328 const char *ifname); 329#else /* HOSTAPD */ 330static inline void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 331{ 332} 333 334static inline void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 335{ 336} 337 338static inline int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 339{ 340 return 0; 341} 342#endif /* HOSTAPD */ 343#ifdef ANDROID 344extern int wpa_driver_nl80211_driver_cmd(void *priv, char *cmd, char *buf, 345 size_t buf_len); 346#endif 347 348static int wpa_driver_nl80211_set_freq(struct i802_bss *bss, 349 struct hostapd_freq_params *freq); 350static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 351 int ifindex, int disabled); 352 353static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv); 354static int wpa_driver_nl80211_authenticate_retry( 355 struct wpa_driver_nl80211_data *drv); 356 357 358static int is_ap_interface(enum nl80211_iftype nlmode) 359{ 360 return (nlmode == NL80211_IFTYPE_AP || 361 nlmode == NL80211_IFTYPE_P2P_GO); 362} 363 364 365static int is_sta_interface(enum nl80211_iftype nlmode) 366{ 367 return (nlmode == NL80211_IFTYPE_STATION || 368 nlmode == NL80211_IFTYPE_P2P_CLIENT); 369} 370 371 372static int is_p2p_interface(enum nl80211_iftype nlmode) 373{ 374 return (nlmode == NL80211_IFTYPE_P2P_CLIENT || 375 nlmode == NL80211_IFTYPE_P2P_GO); 376} 377 378 379struct nl80211_bss_info_arg { 380 struct wpa_driver_nl80211_data *drv; 381 struct wpa_scan_results *res; 382 unsigned int assoc_freq; 383 u8 assoc_bssid[ETH_ALEN]; 384}; 385 386static int bss_info_handler(struct nl_msg *msg, void *arg); 387 388 389/* nl80211 code */ 390static int ack_handler(struct nl_msg *msg, void *arg) 391{ 392 int *err = arg; 393 *err = 0; 394 return NL_STOP; 395} 396 397static int finish_handler(struct nl_msg *msg, void *arg) 398{ 399 int *ret = arg; 400 *ret = 0; 401 return NL_SKIP; 402} 403 404static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, 405 void *arg) 406{ 407 int *ret = arg; 408 *ret = err->error; 409 return NL_SKIP; 410} 411 412 413static int no_seq_check(struct nl_msg *msg, void *arg) 414{ 415 return NL_OK; 416} 417 418 419static int send_and_recv(struct nl80211_global *global, 420 struct nl_handle *nl_handle, struct nl_msg *msg, 421 int (*valid_handler)(struct nl_msg *, void *), 422 void *valid_data) 423{ 424 struct nl_cb *cb; 425 int err = -ENOMEM; 426 427 cb = nl_cb_clone(global->nl_cb); 428 if (!cb) 429 goto out; 430 431 err = nl_send_auto_complete(nl_handle, msg); 432 if (err < 0) 433 goto out; 434 435 err = 1; 436 437 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err); 438 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err); 439 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err); 440 441 if (valid_handler) 442 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, 443 valid_handler, valid_data); 444 445 while (err > 0) 446 nl_recvmsgs(nl_handle, cb); 447 out: 448 nl_cb_put(cb); 449 nlmsg_free(msg); 450 return err; 451} 452 453 454static int send_and_recv_msgs_global(struct nl80211_global *global, 455 struct nl_msg *msg, 456 int (*valid_handler)(struct nl_msg *, void *), 457 void *valid_data) 458{ 459 return send_and_recv(global, global->nl, msg, valid_handler, 460 valid_data); 461} 462 463 464#ifndef ANDROID 465static 466#endif 467int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv, 468 struct nl_msg *msg, 469 int (*valid_handler)(struct nl_msg *, void *), 470 void *valid_data) 471{ 472 return send_and_recv(drv->global, drv->global->nl, msg, 473 valid_handler, valid_data); 474} 475 476 477struct family_data { 478 const char *group; 479 int id; 480}; 481 482 483static int family_handler(struct nl_msg *msg, void *arg) 484{ 485 struct family_data *res = arg; 486 struct nlattr *tb[CTRL_ATTR_MAX + 1]; 487 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 488 struct nlattr *mcgrp; 489 int i; 490 491 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 492 genlmsg_attrlen(gnlh, 0), NULL); 493 if (!tb[CTRL_ATTR_MCAST_GROUPS]) 494 return NL_SKIP; 495 496 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) { 497 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1]; 498 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp), 499 nla_len(mcgrp), NULL); 500 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] || 501 !tb2[CTRL_ATTR_MCAST_GRP_ID] || 502 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]), 503 res->group, 504 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0) 505 continue; 506 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]); 507 break; 508 }; 509 510 return NL_SKIP; 511} 512 513 514static int nl_get_multicast_id(struct nl80211_global *global, 515 const char *family, const char *group) 516{ 517 struct nl_msg *msg; 518 int ret = -1; 519 struct family_data res = { group, -ENOENT }; 520 521 msg = nlmsg_alloc(); 522 if (!msg) 523 return -ENOMEM; 524 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"), 525 0, 0, CTRL_CMD_GETFAMILY, 0); 526 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family); 527 528 ret = send_and_recv_msgs_global(global, msg, family_handler, &res); 529 msg = NULL; 530 if (ret == 0) 531 ret = res.id; 532 533nla_put_failure: 534 nlmsg_free(msg); 535 return ret; 536} 537 538 539static void * nl80211_cmd(struct wpa_driver_nl80211_data *drv, 540 struct nl_msg *msg, int flags, uint8_t cmd) 541{ 542 return genlmsg_put(msg, 0, 0, drv->global->nl80211_id, 543 0, flags, cmd, 0); 544} 545 546 547struct wiphy_idx_data { 548 int wiphy_idx; 549}; 550 551 552static int netdev_info_handler(struct nl_msg *msg, void *arg) 553{ 554 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 555 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 556 struct wiphy_idx_data *info = arg; 557 558 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 559 genlmsg_attrlen(gnlh, 0), NULL); 560 561 if (tb[NL80211_ATTR_WIPHY]) 562 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 563 564 return NL_SKIP; 565} 566 567 568static int nl80211_get_wiphy_index(struct i802_bss *bss) 569{ 570 struct nl_msg *msg; 571 struct wiphy_idx_data data = { 572 .wiphy_idx = -1, 573 }; 574 575 msg = nlmsg_alloc(); 576 if (!msg) 577 return -1; 578 579 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE); 580 581 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 582 583 if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0) 584 return data.wiphy_idx; 585 msg = NULL; 586nla_put_failure: 587 nlmsg_free(msg); 588 return -1; 589} 590 591 592static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv, 593 struct nl80211_wiphy_data *w) 594{ 595 struct nl_msg *msg; 596 int ret = -1; 597 598 msg = nlmsg_alloc(); 599 if (!msg) 600 return -1; 601 602 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS); 603 604 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx); 605 606 ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL); 607 msg = NULL; 608 if (ret) { 609 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command " 610 "failed: ret=%d (%s)", 611 ret, strerror(-ret)); 612 goto nla_put_failure; 613 } 614 ret = 0; 615nla_put_failure: 616 nlmsg_free(msg); 617 return ret; 618} 619 620 621static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle) 622{ 623 struct nl80211_wiphy_data *w = eloop_ctx; 624 625 wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available"); 626 627 nl_recvmsgs(handle, w->nl_cb); 628} 629 630 631static int process_beacon_event(struct nl_msg *msg, void *arg) 632{ 633 struct nl80211_wiphy_data *w = arg; 634 struct wpa_driver_nl80211_data *drv; 635 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 636 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 637 union wpa_event_data event; 638 639 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 640 genlmsg_attrlen(gnlh, 0), NULL); 641 642 if (gnlh->cmd != NL80211_CMD_FRAME) { 643 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)", 644 gnlh->cmd); 645 return NL_SKIP; 646 } 647 648 if (!tb[NL80211_ATTR_FRAME]) 649 return NL_SKIP; 650 651 dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data, 652 wiphy_list) { 653 os_memset(&event, 0, sizeof(event)); 654 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]); 655 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]); 656 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 657 } 658 659 return NL_SKIP; 660} 661 662 663static struct nl80211_wiphy_data * 664nl80211_get_wiphy_data_ap(struct i802_bss *bss) 665{ 666 static DEFINE_DL_LIST(nl80211_wiphys); 667 struct nl80211_wiphy_data *w; 668 int wiphy_idx, found = 0; 669 struct i802_bss *tmp_bss; 670 671 if (bss->wiphy_data != NULL) 672 return bss->wiphy_data; 673 674 wiphy_idx = nl80211_get_wiphy_index(bss); 675 676 dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) { 677 if (w->wiphy_idx == wiphy_idx) 678 goto add; 679 } 680 681 /* alloc new one */ 682 w = os_zalloc(sizeof(*w)); 683 if (w == NULL) 684 return NULL; 685 w->wiphy_idx = wiphy_idx; 686 dl_list_init(&w->bsss); 687 dl_list_init(&w->drvs); 688 689 w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 690 if (!w->nl_cb) { 691 os_free(w); 692 return NULL; 693 } 694 nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL); 695 nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event, 696 w); 697 698 w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb, 699 "wiphy beacons"); 700 if (w->nl_beacons == NULL) { 701 os_free(w); 702 return NULL; 703 } 704 705 if (nl80211_register_beacons(bss->drv, w)) { 706 nl_destroy_handles(&w->nl_beacons); 707 os_free(w); 708 return NULL; 709 } 710 711 eloop_register_read_sock(nl_socket_get_fd(w->nl_beacons), 712 nl80211_recv_beacons, w, w->nl_beacons); 713 714 dl_list_add(&nl80211_wiphys, &w->list); 715 716add: 717 /* drv entry for this bss already there? */ 718 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) { 719 if (tmp_bss->drv == bss->drv) { 720 found = 1; 721 break; 722 } 723 } 724 /* if not add it */ 725 if (!found) 726 dl_list_add(&w->drvs, &bss->drv->wiphy_list); 727 728 dl_list_add(&w->bsss, &bss->wiphy_list); 729 bss->wiphy_data = w; 730 return w; 731} 732 733 734static void nl80211_put_wiphy_data_ap(struct i802_bss *bss) 735{ 736 struct nl80211_wiphy_data *w = bss->wiphy_data; 737 struct i802_bss *tmp_bss; 738 int found = 0; 739 740 if (w == NULL) 741 return; 742 bss->wiphy_data = NULL; 743 dl_list_del(&bss->wiphy_list); 744 745 /* still any for this drv present? */ 746 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) { 747 if (tmp_bss->drv == bss->drv) { 748 found = 1; 749 break; 750 } 751 } 752 /* if not remove it */ 753 if (!found) 754 dl_list_del(&bss->drv->wiphy_list); 755 756 if (!dl_list_empty(&w->bsss)) 757 return; 758 759 eloop_unregister_read_sock(nl_socket_get_fd(w->nl_beacons)); 760 761 nl_cb_put(w->nl_cb); 762 nl_destroy_handles(&w->nl_beacons); 763 dl_list_del(&w->list); 764 os_free(w); 765} 766 767 768static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid) 769{ 770 struct i802_bss *bss = priv; 771 struct wpa_driver_nl80211_data *drv = bss->drv; 772 if (!drv->associated) 773 return -1; 774 os_memcpy(bssid, drv->bssid, ETH_ALEN); 775 return 0; 776} 777 778 779static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid) 780{ 781 struct i802_bss *bss = priv; 782 struct wpa_driver_nl80211_data *drv = bss->drv; 783 if (!drv->associated) 784 return -1; 785 os_memcpy(ssid, drv->ssid, drv->ssid_len); 786 return drv->ssid_len; 787} 788 789 790static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv, 791 char *buf, size_t len, int del) 792{ 793 union wpa_event_data event; 794 795 os_memset(&event, 0, sizeof(event)); 796 if (len > sizeof(event.interface_status.ifname)) 797 len = sizeof(event.interface_status.ifname) - 1; 798 os_memcpy(event.interface_status.ifname, buf, len); 799 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED : 800 EVENT_INTERFACE_ADDED; 801 802 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s", 803 del ? "DEL" : "NEW", 804 event.interface_status.ifname, 805 del ? "removed" : "added"); 806 807 if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) { 808 if (del) { 809 if (drv->if_removed) { 810 wpa_printf(MSG_DEBUG, "nl80211: if_removed " 811 "already set - ignore event"); 812 return; 813 } 814 drv->if_removed = 1; 815 } else { 816 if (if_nametoindex(drv->first_bss.ifname) == 0) { 817 wpa_printf(MSG_DEBUG, "nl80211: Interface %s " 818 "does not exist - ignore " 819 "RTM_NEWLINK", 820 drv->first_bss.ifname); 821 return; 822 } 823 if (!drv->if_removed) { 824 wpa_printf(MSG_DEBUG, "nl80211: if_removed " 825 "already cleared - ignore event"); 826 return; 827 } 828 drv->if_removed = 0; 829 } 830 } 831 832 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event); 833} 834 835 836static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv, 837 u8 *buf, size_t len) 838{ 839 int attrlen, rta_len; 840 struct rtattr *attr; 841 842 attrlen = len; 843 attr = (struct rtattr *) buf; 844 845 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 846 while (RTA_OK(attr, attrlen)) { 847 if (attr->rta_type == IFLA_IFNAME) { 848 if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname) 849 == 0) 850 return 1; 851 else 852 break; 853 } 854 attr = RTA_NEXT(attr, attrlen); 855 } 856 857 return 0; 858} 859 860 861static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv, 862 int ifindex, u8 *buf, size_t len) 863{ 864 if (drv->ifindex == ifindex) 865 return 1; 866 867 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) { 868 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname); 869 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed " 870 "interface"); 871 wpa_driver_nl80211_finish_drv_init(drv); 872 return 1; 873 } 874 875 return 0; 876} 877 878 879static struct wpa_driver_nl80211_data * 880nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len) 881{ 882 struct wpa_driver_nl80211_data *drv; 883 dl_list_for_each(drv, &global->interfaces, 884 struct wpa_driver_nl80211_data, list) { 885 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) || 886 have_ifidx(drv, idx)) 887 return drv; 888 } 889 return NULL; 890} 891 892 893static void wpa_driver_nl80211_event_rtm_newlink(void *ctx, 894 struct ifinfomsg *ifi, 895 u8 *buf, size_t len) 896{ 897 struct nl80211_global *global = ctx; 898 struct wpa_driver_nl80211_data *drv; 899 int attrlen, rta_len; 900 struct rtattr *attr; 901 u32 brid = 0; 902 char namebuf[IFNAMSIZ]; 903 904 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len); 905 if (!drv) { 906 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign " 907 "ifindex %d", ifi->ifi_index); 908 return; 909 } 910 911 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x " 912 "(%s%s%s%s)", 913 drv->operstate, ifi->ifi_flags, 914 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "", 915 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "", 916 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "", 917 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : ""); 918 919 if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) { 920 if (if_indextoname(ifi->ifi_index, namebuf) && 921 linux_iface_up(drv->global->ioctl_sock, 922 drv->first_bss.ifname) > 0) { 923 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down " 924 "event since interface %s is up", namebuf); 925 return; 926 } 927 wpa_printf(MSG_DEBUG, "nl80211: Interface down"); 928 if (drv->ignore_if_down_event) { 929 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down " 930 "event generated by mode change"); 931 drv->ignore_if_down_event = 0; 932 } else { 933 drv->if_disabled = 1; 934 wpa_supplicant_event(drv->ctx, 935 EVENT_INTERFACE_DISABLED, NULL); 936 } 937 } 938 939 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) { 940 if (if_indextoname(ifi->ifi_index, namebuf) && 941 linux_iface_up(drv->global->ioctl_sock, 942 drv->first_bss.ifname) == 0) { 943 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 944 "event since interface %s is down", 945 namebuf); 946 } else if (if_nametoindex(drv->first_bss.ifname) == 0) { 947 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 948 "event since interface %s does not exist", 949 drv->first_bss.ifname); 950 } else if (drv->if_removed) { 951 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 952 "event since interface %s is marked " 953 "removed", drv->first_bss.ifname); 954 } else { 955 wpa_printf(MSG_DEBUG, "nl80211: Interface up"); 956 drv->if_disabled = 0; 957 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, 958 NULL); 959 } 960 } 961 962 /* 963 * Some drivers send the association event before the operup event--in 964 * this case, lifting operstate in wpa_driver_nl80211_set_operstate() 965 * fails. This will hit us when wpa_supplicant does not need to do 966 * IEEE 802.1X authentication 967 */ 968 if (drv->operstate == 1 && 969 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP && 970 !(ifi->ifi_flags & IFF_RUNNING)) 971 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 972 -1, IF_OPER_UP); 973 974 attrlen = len; 975 attr = (struct rtattr *) buf; 976 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 977 while (RTA_OK(attr, attrlen)) { 978 if (attr->rta_type == IFLA_IFNAME) { 979 wpa_driver_nl80211_event_link( 980 drv, 981 ((char *) attr) + rta_len, 982 attr->rta_len - rta_len, 0); 983 } else if (attr->rta_type == IFLA_MASTER) 984 brid = nla_get_u32((struct nlattr *) attr); 985 attr = RTA_NEXT(attr, attrlen); 986 } 987 988 if (ifi->ifi_family == AF_BRIDGE && brid) { 989 /* device has been added to bridge */ 990 if_indextoname(brid, namebuf); 991 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s", 992 brid, namebuf); 993 add_ifidx(drv, brid); 994 } 995} 996 997 998static void wpa_driver_nl80211_event_rtm_dellink(void *ctx, 999 struct ifinfomsg *ifi, 1000 u8 *buf, size_t len) 1001{ 1002 struct nl80211_global *global = ctx; 1003 struct wpa_driver_nl80211_data *drv; 1004 int attrlen, rta_len; 1005 struct rtattr *attr; 1006 u32 brid = 0; 1007 1008 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len); 1009 if (!drv) { 1010 wpa_printf(MSG_DEBUG, "nl80211: Ignore dellink event for " 1011 "foreign ifindex %d", ifi->ifi_index); 1012 return; 1013 } 1014 1015 attrlen = len; 1016 attr = (struct rtattr *) buf; 1017 1018 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 1019 while (RTA_OK(attr, attrlen)) { 1020 if (attr->rta_type == IFLA_IFNAME) { 1021 wpa_driver_nl80211_event_link( 1022 drv, 1023 ((char *) attr) + rta_len, 1024 attr->rta_len - rta_len, 1); 1025 } else if (attr->rta_type == IFLA_MASTER) 1026 brid = nla_get_u32((struct nlattr *) attr); 1027 attr = RTA_NEXT(attr, attrlen); 1028 } 1029 1030 if (ifi->ifi_family == AF_BRIDGE && brid) { 1031 /* device has been removed from bridge */ 1032 char namebuf[IFNAMSIZ]; 1033 if_indextoname(brid, namebuf); 1034 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge " 1035 "%s", brid, namebuf); 1036 del_ifidx(drv, brid); 1037 } 1038} 1039 1040 1041static void mlme_event_auth(struct wpa_driver_nl80211_data *drv, 1042 const u8 *frame, size_t len) 1043{ 1044 const struct ieee80211_mgmt *mgmt; 1045 union wpa_event_data event; 1046 1047 wpa_printf(MSG_DEBUG, "nl80211: Authenticate event"); 1048 mgmt = (const struct ieee80211_mgmt *) frame; 1049 if (len < 24 + sizeof(mgmt->u.auth)) { 1050 wpa_printf(MSG_DEBUG, "nl80211: Too short association event " 1051 "frame"); 1052 return; 1053 } 1054 1055 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN); 1056 os_memset(&event, 0, sizeof(event)); 1057 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN); 1058 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg); 1059 event.auth.auth_transaction = 1060 le_to_host16(mgmt->u.auth.auth_transaction); 1061 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code); 1062 if (len > 24 + sizeof(mgmt->u.auth)) { 1063 event.auth.ies = mgmt->u.auth.variable; 1064 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth); 1065 } 1066 1067 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event); 1068} 1069 1070 1071static unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv) 1072{ 1073 struct nl_msg *msg; 1074 int ret; 1075 struct nl80211_bss_info_arg arg; 1076 1077 os_memset(&arg, 0, sizeof(arg)); 1078 msg = nlmsg_alloc(); 1079 if (!msg) 1080 goto nla_put_failure; 1081 1082 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 1083 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1084 1085 arg.drv = drv; 1086 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 1087 msg = NULL; 1088 if (ret == 0) { 1089 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the " 1090 "associated BSS from scan results: %u MHz", 1091 arg.assoc_freq); 1092 return arg.assoc_freq ? arg.assoc_freq : drv->assoc_freq; 1093 } 1094 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 1095 "(%s)", ret, strerror(-ret)); 1096nla_put_failure: 1097 nlmsg_free(msg); 1098 return drv->assoc_freq; 1099} 1100 1101 1102static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv, 1103 const u8 *frame, size_t len) 1104{ 1105 const struct ieee80211_mgmt *mgmt; 1106 union wpa_event_data event; 1107 u16 status; 1108 1109 wpa_printf(MSG_DEBUG, "nl80211: Associate event"); 1110 mgmt = (const struct ieee80211_mgmt *) frame; 1111 if (len < 24 + sizeof(mgmt->u.assoc_resp)) { 1112 wpa_printf(MSG_DEBUG, "nl80211: Too short association event " 1113 "frame"); 1114 return; 1115 } 1116 1117 status = le_to_host16(mgmt->u.assoc_resp.status_code); 1118 if (status != WLAN_STATUS_SUCCESS) { 1119 os_memset(&event, 0, sizeof(event)); 1120 event.assoc_reject.bssid = mgmt->bssid; 1121 if (len > 24 + sizeof(mgmt->u.assoc_resp)) { 1122 event.assoc_reject.resp_ies = 1123 (u8 *) mgmt->u.assoc_resp.variable; 1124 event.assoc_reject.resp_ies_len = 1125 len - 24 - sizeof(mgmt->u.assoc_resp); 1126 } 1127 event.assoc_reject.status_code = status; 1128 1129 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event); 1130 return; 1131 } 1132 1133 drv->associated = 1; 1134 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN); 1135 1136 os_memset(&event, 0, sizeof(event)); 1137 if (len > 24 + sizeof(mgmt->u.assoc_resp)) { 1138 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable; 1139 event.assoc_info.resp_ies_len = 1140 len - 24 - sizeof(mgmt->u.assoc_resp); 1141 } 1142 1143 event.assoc_info.freq = drv->assoc_freq; 1144 1145 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); 1146} 1147 1148 1149static void mlme_event_connect(struct wpa_driver_nl80211_data *drv, 1150 enum nl80211_commands cmd, struct nlattr *status, 1151 struct nlattr *addr, struct nlattr *req_ie, 1152 struct nlattr *resp_ie) 1153{ 1154 union wpa_event_data event; 1155 1156 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 1157 /* 1158 * Avoid reporting two association events that would confuse 1159 * the core code. 1160 */ 1161 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) " 1162 "when using userspace SME", cmd); 1163 return; 1164 } 1165 1166 if (cmd == NL80211_CMD_CONNECT) 1167 wpa_printf(MSG_DEBUG, "nl80211: Connect event"); 1168 else if (cmd == NL80211_CMD_ROAM) 1169 wpa_printf(MSG_DEBUG, "nl80211: Roam event"); 1170 1171 os_memset(&event, 0, sizeof(event)); 1172 if (cmd == NL80211_CMD_CONNECT && 1173 nla_get_u16(status) != WLAN_STATUS_SUCCESS) { 1174 if (addr) 1175 event.assoc_reject.bssid = nla_data(addr); 1176 if (resp_ie) { 1177 event.assoc_reject.resp_ies = nla_data(resp_ie); 1178 event.assoc_reject.resp_ies_len = nla_len(resp_ie); 1179 } 1180 event.assoc_reject.status_code = nla_get_u16(status); 1181 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event); 1182 return; 1183 } 1184 1185 drv->associated = 1; 1186 if (addr) 1187 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN); 1188 1189 if (req_ie) { 1190 event.assoc_info.req_ies = nla_data(req_ie); 1191 event.assoc_info.req_ies_len = nla_len(req_ie); 1192 } 1193 if (resp_ie) { 1194 event.assoc_info.resp_ies = nla_data(resp_ie); 1195 event.assoc_info.resp_ies_len = nla_len(resp_ie); 1196 } 1197 1198 event.assoc_info.freq = nl80211_get_assoc_freq(drv); 1199 1200 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); 1201} 1202 1203 1204static void mlme_event_disconnect(struct wpa_driver_nl80211_data *drv, 1205 struct nlattr *reason, struct nlattr *addr, 1206 struct nlattr *by_ap) 1207{ 1208 union wpa_event_data data; 1209 unsigned int locally_generated = by_ap == NULL; 1210 1211 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 1212 /* 1213 * Avoid reporting two disassociation events that could 1214 * confuse the core code. 1215 */ 1216 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect " 1217 "event when using userspace SME"); 1218 return; 1219 } 1220 1221 if (drv->ignore_next_local_disconnect) { 1222 drv->ignore_next_local_disconnect = 0; 1223 if (locally_generated) { 1224 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect " 1225 "event triggered during reassociation"); 1226 return; 1227 } 1228 wpa_printf(MSG_WARNING, "nl80211: Was expecting local " 1229 "disconnect but got another disconnect " 1230 "event first"); 1231 } 1232 1233 wpa_printf(MSG_DEBUG, "nl80211: Disconnect event"); 1234 drv->associated = 0; 1235 os_memset(&data, 0, sizeof(data)); 1236 if (reason) 1237 data.deauth_info.reason_code = nla_get_u16(reason); 1238 data.deauth_info.locally_generated = by_ap == NULL; 1239 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, &data); 1240} 1241 1242 1243static void mlme_event_ch_switch(struct wpa_driver_nl80211_data *drv, 1244 struct nlattr *freq, struct nlattr *type) 1245{ 1246 union wpa_event_data data; 1247 int ht_enabled = 1; 1248 int chan_offset = 0; 1249 1250 wpa_printf(MSG_DEBUG, "nl80211: Channel switch event"); 1251 1252 if (!freq || !type) 1253 return; 1254 1255 switch (nla_get_u32(type)) { 1256 case NL80211_CHAN_NO_HT: 1257 ht_enabled = 0; 1258 break; 1259 case NL80211_CHAN_HT20: 1260 break; 1261 case NL80211_CHAN_HT40PLUS: 1262 chan_offset = 1; 1263 break; 1264 case NL80211_CHAN_HT40MINUS: 1265 chan_offset = -1; 1266 break; 1267 } 1268 1269 data.ch_switch.freq = nla_get_u32(freq); 1270 data.ch_switch.ht_enabled = ht_enabled; 1271 data.ch_switch.ch_offset = chan_offset; 1272 1273 wpa_supplicant_event(drv->ctx, EVENT_CH_SWITCH, &data); 1274} 1275 1276 1277static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv, 1278 enum nl80211_commands cmd, struct nlattr *addr) 1279{ 1280 union wpa_event_data event; 1281 enum wpa_event_type ev; 1282 1283 if (nla_len(addr) != ETH_ALEN) 1284 return; 1285 1286 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR, 1287 cmd, MAC2STR((u8 *) nla_data(addr))); 1288 1289 if (cmd == NL80211_CMD_AUTHENTICATE) 1290 ev = EVENT_AUTH_TIMED_OUT; 1291 else if (cmd == NL80211_CMD_ASSOCIATE) 1292 ev = EVENT_ASSOC_TIMED_OUT; 1293 else 1294 return; 1295 1296 os_memset(&event, 0, sizeof(event)); 1297 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN); 1298 wpa_supplicant_event(drv->ctx, ev, &event); 1299} 1300 1301 1302static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv, 1303 struct nlattr *freq, struct nlattr *sig, 1304 const u8 *frame, size_t len) 1305{ 1306 const struct ieee80211_mgmt *mgmt; 1307 union wpa_event_data event; 1308 u16 fc, stype; 1309 int ssi_signal = 0; 1310 1311 wpa_printf(MSG_MSGDUMP, "nl80211: Frame event"); 1312 mgmt = (const struct ieee80211_mgmt *) frame; 1313 if (len < 24) { 1314 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame"); 1315 return; 1316 } 1317 1318 fc = le_to_host16(mgmt->frame_control); 1319 stype = WLAN_FC_GET_STYPE(fc); 1320 1321 if (sig) 1322 ssi_signal = (s32) nla_get_u32(sig); 1323 1324 os_memset(&event, 0, sizeof(event)); 1325 if (freq) { 1326 event.rx_action.freq = nla_get_u32(freq); 1327 drv->last_mgmt_freq = event.rx_action.freq; 1328 } 1329 if (stype == WLAN_FC_STYPE_ACTION) { 1330 event.rx_action.da = mgmt->da; 1331 event.rx_action.sa = mgmt->sa; 1332 event.rx_action.bssid = mgmt->bssid; 1333 event.rx_action.category = mgmt->u.action.category; 1334 event.rx_action.data = &mgmt->u.action.category + 1; 1335 event.rx_action.len = frame + len - event.rx_action.data; 1336 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event); 1337 } else { 1338 event.rx_mgmt.frame = frame; 1339 event.rx_mgmt.frame_len = len; 1340 event.rx_mgmt.ssi_signal = ssi_signal; 1341 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 1342 } 1343} 1344 1345 1346static void mlme_event_mgmt_tx_status(struct wpa_driver_nl80211_data *drv, 1347 struct nlattr *cookie, const u8 *frame, 1348 size_t len, struct nlattr *ack) 1349{ 1350 union wpa_event_data event; 1351 const struct ieee80211_hdr *hdr; 1352 u16 fc; 1353 1354 wpa_printf(MSG_DEBUG, "nl80211: Frame TX status event"); 1355 if (!is_ap_interface(drv->nlmode)) { 1356 u64 cookie_val; 1357 1358 if (!cookie) 1359 return; 1360 1361 cookie_val = nla_get_u64(cookie); 1362 wpa_printf(MSG_DEBUG, "nl80211: Action TX status:" 1363 " cookie=0%llx%s (ack=%d)", 1364 (long long unsigned int) cookie_val, 1365 cookie_val == drv->send_action_cookie ? 1366 " (match)" : " (unknown)", ack != NULL); 1367 if (cookie_val != drv->send_action_cookie) 1368 return; 1369 } 1370 1371 hdr = (const struct ieee80211_hdr *) frame; 1372 fc = le_to_host16(hdr->frame_control); 1373 1374 os_memset(&event, 0, sizeof(event)); 1375 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 1376 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 1377 event.tx_status.dst = hdr->addr1; 1378 event.tx_status.data = frame; 1379 event.tx_status.data_len = len; 1380 event.tx_status.ack = ack != NULL; 1381 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event); 1382} 1383 1384 1385static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv, 1386 enum wpa_event_type type, 1387 const u8 *frame, size_t len) 1388{ 1389 const struct ieee80211_mgmt *mgmt; 1390 union wpa_event_data event; 1391 const u8 *bssid = NULL; 1392 u16 reason_code = 0; 1393 1394 if (type == EVENT_DEAUTH) 1395 wpa_printf(MSG_DEBUG, "nl80211: Deauthenticate event"); 1396 else 1397 wpa_printf(MSG_DEBUG, "nl80211: Disassociate event"); 1398 1399 mgmt = (const struct ieee80211_mgmt *) frame; 1400 if (len >= 24) { 1401 bssid = mgmt->bssid; 1402 1403 if (drv->associated != 0 && 1404 os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 && 1405 os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) { 1406 /* 1407 * We have presumably received this deauth as a 1408 * response to a clear_state_mismatch() outgoing 1409 * deauth. Don't let it take us offline! 1410 */ 1411 wpa_printf(MSG_DEBUG, "nl80211: Deauth received " 1412 "from Unknown BSSID " MACSTR " -- ignoring", 1413 MAC2STR(bssid)); 1414 return; 1415 } 1416 } 1417 1418 drv->associated = 0; 1419 os_memset(&event, 0, sizeof(event)); 1420 1421 /* Note: Same offset for Reason Code in both frame subtypes */ 1422 if (len >= 24 + sizeof(mgmt->u.deauth)) 1423 reason_code = le_to_host16(mgmt->u.deauth.reason_code); 1424 1425 if (type == EVENT_DISASSOC) { 1426 event.disassoc_info.locally_generated = 1427 !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN); 1428 event.disassoc_info.addr = bssid; 1429 event.disassoc_info.reason_code = reason_code; 1430 if (frame + len > mgmt->u.disassoc.variable) { 1431 event.disassoc_info.ie = mgmt->u.disassoc.variable; 1432 event.disassoc_info.ie_len = frame + len - 1433 mgmt->u.disassoc.variable; 1434 } 1435 } else { 1436 event.deauth_info.locally_generated = 1437 !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN); 1438 event.deauth_info.addr = bssid; 1439 event.deauth_info.reason_code = reason_code; 1440 if (frame + len > mgmt->u.deauth.variable) { 1441 event.deauth_info.ie = mgmt->u.deauth.variable; 1442 event.deauth_info.ie_len = frame + len - 1443 mgmt->u.deauth.variable; 1444 } 1445 } 1446 1447 wpa_supplicant_event(drv->ctx, type, &event); 1448} 1449 1450 1451static void mlme_event_unprot_disconnect(struct wpa_driver_nl80211_data *drv, 1452 enum wpa_event_type type, 1453 const u8 *frame, size_t len) 1454{ 1455 const struct ieee80211_mgmt *mgmt; 1456 union wpa_event_data event; 1457 u16 reason_code = 0; 1458 1459 if (type == EVENT_UNPROT_DEAUTH) 1460 wpa_printf(MSG_DEBUG, "nl80211: Unprot Deauthenticate event"); 1461 else 1462 wpa_printf(MSG_DEBUG, "nl80211: Unprot Disassociate event"); 1463 1464 if (len < 24) 1465 return; 1466 1467 mgmt = (const struct ieee80211_mgmt *) frame; 1468 1469 os_memset(&event, 0, sizeof(event)); 1470 /* Note: Same offset for Reason Code in both frame subtypes */ 1471 if (len >= 24 + sizeof(mgmt->u.deauth)) 1472 reason_code = le_to_host16(mgmt->u.deauth.reason_code); 1473 1474 if (type == EVENT_UNPROT_DISASSOC) { 1475 event.unprot_disassoc.sa = mgmt->sa; 1476 event.unprot_disassoc.da = mgmt->da; 1477 event.unprot_disassoc.reason_code = reason_code; 1478 } else { 1479 event.unprot_deauth.sa = mgmt->sa; 1480 event.unprot_deauth.da = mgmt->da; 1481 event.unprot_deauth.reason_code = reason_code; 1482 } 1483 1484 wpa_supplicant_event(drv->ctx, type, &event); 1485} 1486 1487 1488static void mlme_event(struct i802_bss *bss, 1489 enum nl80211_commands cmd, struct nlattr *frame, 1490 struct nlattr *addr, struct nlattr *timed_out, 1491 struct nlattr *freq, struct nlattr *ack, 1492 struct nlattr *cookie, struct nlattr *sig) 1493{ 1494 struct wpa_driver_nl80211_data *drv = bss->drv; 1495 const u8 *data; 1496 size_t len; 1497 1498 if (timed_out && addr) { 1499 mlme_timeout_event(drv, cmd, addr); 1500 return; 1501 } 1502 1503 if (frame == NULL) { 1504 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame " 1505 "data", cmd); 1506 return; 1507 } 1508 1509 data = nla_data(frame); 1510 len = nla_len(frame); 1511 if (len < 4 + ETH_ALEN) { 1512 wpa_printf(MSG_MSGDUMP, "nl80211: MLME event %d on %s(" MACSTR 1513 ") - too short", 1514 cmd, bss->ifname, MAC2STR(bss->addr)); 1515 return; 1516 } 1517 wpa_printf(MSG_MSGDUMP, "nl80211: MLME event %d on %s(" MACSTR ") A1=" 1518 MACSTR, cmd, bss->ifname, MAC2STR(bss->addr), 1519 MAC2STR(data + 4)); 1520 if (cmd != NL80211_CMD_FRAME_TX_STATUS && !(data[4] & 0x01) && 1521 os_memcmp(bss->addr, data + 4, ETH_ALEN) != 0) { 1522 wpa_printf(MSG_MSGDUMP, "nl80211: %s: Ignore MLME frame event " 1523 "for foreign address", bss->ifname); 1524 return; 1525 } 1526 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame", 1527 nla_data(frame), nla_len(frame)); 1528 1529 switch (cmd) { 1530 case NL80211_CMD_AUTHENTICATE: 1531 mlme_event_auth(drv, nla_data(frame), nla_len(frame)); 1532 break; 1533 case NL80211_CMD_ASSOCIATE: 1534 mlme_event_assoc(drv, nla_data(frame), nla_len(frame)); 1535 break; 1536 case NL80211_CMD_DEAUTHENTICATE: 1537 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH, 1538 nla_data(frame), nla_len(frame)); 1539 break; 1540 case NL80211_CMD_DISASSOCIATE: 1541 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC, 1542 nla_data(frame), nla_len(frame)); 1543 break; 1544 case NL80211_CMD_FRAME: 1545 mlme_event_mgmt(drv, freq, sig, nla_data(frame), 1546 nla_len(frame)); 1547 break; 1548 case NL80211_CMD_FRAME_TX_STATUS: 1549 mlme_event_mgmt_tx_status(drv, cookie, nla_data(frame), 1550 nla_len(frame), ack); 1551 break; 1552 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 1553 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH, 1554 nla_data(frame), nla_len(frame)); 1555 break; 1556 case NL80211_CMD_UNPROT_DISASSOCIATE: 1557 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC, 1558 nla_data(frame), nla_len(frame)); 1559 break; 1560 default: 1561 break; 1562 } 1563} 1564 1565 1566static void mlme_event_michael_mic_failure(struct i802_bss *bss, 1567 struct nlattr *tb[]) 1568{ 1569 union wpa_event_data data; 1570 1571 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure"); 1572 os_memset(&data, 0, sizeof(data)); 1573 if (tb[NL80211_ATTR_MAC]) { 1574 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address", 1575 nla_data(tb[NL80211_ATTR_MAC]), 1576 nla_len(tb[NL80211_ATTR_MAC])); 1577 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]); 1578 } 1579 if (tb[NL80211_ATTR_KEY_SEQ]) { 1580 wpa_hexdump(MSG_DEBUG, "nl80211: TSC", 1581 nla_data(tb[NL80211_ATTR_KEY_SEQ]), 1582 nla_len(tb[NL80211_ATTR_KEY_SEQ])); 1583 } 1584 if (tb[NL80211_ATTR_KEY_TYPE]) { 1585 enum nl80211_key_type key_type = 1586 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]); 1587 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type); 1588 if (key_type == NL80211_KEYTYPE_PAIRWISE) 1589 data.michael_mic_failure.unicast = 1; 1590 } else 1591 data.michael_mic_failure.unicast = 1; 1592 1593 if (tb[NL80211_ATTR_KEY_IDX]) { 1594 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]); 1595 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id); 1596 } 1597 1598 wpa_supplicant_event(bss->ctx, EVENT_MICHAEL_MIC_FAILURE, &data); 1599} 1600 1601 1602static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv, 1603 struct nlattr *tb[]) 1604{ 1605 if (tb[NL80211_ATTR_MAC] == NULL) { 1606 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined " 1607 "event"); 1608 return; 1609 } 1610 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 1611 drv->associated = 1; 1612 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined", 1613 MAC2STR(drv->bssid)); 1614 1615 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL); 1616} 1617 1618 1619static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv, 1620 int cancel_event, struct nlattr *tb[]) 1621{ 1622 unsigned int freq, chan_type, duration; 1623 union wpa_event_data data; 1624 u64 cookie; 1625 1626 if (tb[NL80211_ATTR_WIPHY_FREQ]) 1627 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]); 1628 else 1629 freq = 0; 1630 1631 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) 1632 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 1633 else 1634 chan_type = 0; 1635 1636 if (tb[NL80211_ATTR_DURATION]) 1637 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]); 1638 else 1639 duration = 0; 1640 1641 if (tb[NL80211_ATTR_COOKIE]) 1642 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 1643 else 1644 cookie = 0; 1645 1646 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d " 1647 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))", 1648 cancel_event, freq, chan_type, duration, 1649 (long long unsigned int) cookie, 1650 cookie == drv->remain_on_chan_cookie ? "match" : "unknown"); 1651 1652 if (cookie != drv->remain_on_chan_cookie) 1653 return; /* not for us */ 1654 1655 if (cancel_event) 1656 drv->pending_remain_on_chan = 0; 1657 1658 os_memset(&data, 0, sizeof(data)); 1659 data.remain_on_channel.freq = freq; 1660 data.remain_on_channel.duration = duration; 1661 wpa_supplicant_event(drv->ctx, cancel_event ? 1662 EVENT_CANCEL_REMAIN_ON_CHANNEL : 1663 EVENT_REMAIN_ON_CHANNEL, &data); 1664} 1665 1666 1667static void mlme_event_ft_event(struct wpa_driver_nl80211_data *drv, 1668 struct nlattr *tb[]) 1669{ 1670 union wpa_event_data data; 1671 1672 os_memset(&data, 0, sizeof(data)); 1673 1674 if (tb[NL80211_ATTR_IE]) { 1675 data.ft_ies.ies = nla_data(tb[NL80211_ATTR_IE]); 1676 data.ft_ies.ies_len = nla_len(tb[NL80211_ATTR_IE]); 1677 } 1678 1679 if (tb[NL80211_ATTR_IE_RIC]) { 1680 data.ft_ies.ric_ies = nla_data(tb[NL80211_ATTR_IE_RIC]); 1681 data.ft_ies.ric_ies_len = nla_len(tb[NL80211_ATTR_IE_RIC]); 1682 } 1683 1684 if (tb[NL80211_ATTR_MAC]) 1685 os_memcpy(data.ft_ies.target_ap, 1686 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 1687 1688 wpa_printf(MSG_DEBUG, "nl80211: FT event target_ap " MACSTR, 1689 MAC2STR(data.ft_ies.target_ap)); 1690 1691 wpa_supplicant_event(drv->ctx, EVENT_FT_RESPONSE, &data); 1692} 1693 1694 1695static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted, 1696 struct nlattr *tb[]) 1697{ 1698 union wpa_event_data event; 1699 struct nlattr *nl; 1700 int rem; 1701 struct scan_info *info; 1702#define MAX_REPORT_FREQS 50 1703 int freqs[MAX_REPORT_FREQS]; 1704 int num_freqs = 0; 1705 1706 if (drv->scan_for_auth) { 1707 drv->scan_for_auth = 0; 1708 wpa_printf(MSG_DEBUG, "nl80211: Scan results for missing " 1709 "cfg80211 BSS entry"); 1710 wpa_driver_nl80211_authenticate_retry(drv); 1711 return; 1712 } 1713 1714 os_memset(&event, 0, sizeof(event)); 1715 info = &event.scan_info; 1716 info->aborted = aborted; 1717 1718 if (tb[NL80211_ATTR_SCAN_SSIDS]) { 1719 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) { 1720 struct wpa_driver_scan_ssid *s = 1721 &info->ssids[info->num_ssids]; 1722 s->ssid = nla_data(nl); 1723 s->ssid_len = nla_len(nl); 1724 info->num_ssids++; 1725 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS) 1726 break; 1727 } 1728 } 1729 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) { 1730 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem) 1731 { 1732 freqs[num_freqs] = nla_get_u32(nl); 1733 num_freqs++; 1734 if (num_freqs == MAX_REPORT_FREQS - 1) 1735 break; 1736 } 1737 info->freqs = freqs; 1738 info->num_freqs = num_freqs; 1739 } 1740 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event); 1741} 1742 1743 1744static int get_link_signal(struct nl_msg *msg, void *arg) 1745{ 1746 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1747 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1748 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1]; 1749 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = { 1750 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 }, 1751 }; 1752 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1]; 1753 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = { 1754 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 }, 1755 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 }, 1756 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG }, 1757 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG }, 1758 }; 1759 struct wpa_signal_info *sig_change = arg; 1760 1761 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1762 genlmsg_attrlen(gnlh, 0), NULL); 1763 if (!tb[NL80211_ATTR_STA_INFO] || 1764 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX, 1765 tb[NL80211_ATTR_STA_INFO], policy)) 1766 return NL_SKIP; 1767 if (!sinfo[NL80211_STA_INFO_SIGNAL]) 1768 return NL_SKIP; 1769 1770 sig_change->current_signal = 1771 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]); 1772 1773 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) { 1774 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX, 1775 sinfo[NL80211_STA_INFO_TX_BITRATE], 1776 rate_policy)) { 1777 sig_change->current_txrate = 0; 1778 } else { 1779 if (rinfo[NL80211_RATE_INFO_BITRATE]) { 1780 sig_change->current_txrate = 1781 nla_get_u16(rinfo[ 1782 NL80211_RATE_INFO_BITRATE]) * 100; 1783 } 1784 } 1785 } 1786 1787 return NL_SKIP; 1788} 1789 1790 1791static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv, 1792 struct wpa_signal_info *sig) 1793{ 1794 struct nl_msg *msg; 1795 1796 sig->current_signal = -9999; 1797 sig->current_txrate = 0; 1798 1799 msg = nlmsg_alloc(); 1800 if (!msg) 1801 return -ENOMEM; 1802 1803 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 1804 1805 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1806 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 1807 1808 return send_and_recv_msgs(drv, msg, get_link_signal, sig); 1809 nla_put_failure: 1810 nlmsg_free(msg); 1811 return -ENOBUFS; 1812} 1813 1814 1815static int get_link_noise(struct nl_msg *msg, void *arg) 1816{ 1817 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1818 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1819 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 1820 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 1821 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 1822 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 1823 }; 1824 struct wpa_signal_info *sig_change = arg; 1825 1826 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1827 genlmsg_attrlen(gnlh, 0), NULL); 1828 1829 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 1830 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!"); 1831 return NL_SKIP; 1832 } 1833 1834 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 1835 tb[NL80211_ATTR_SURVEY_INFO], 1836 survey_policy)) { 1837 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested " 1838 "attributes!"); 1839 return NL_SKIP; 1840 } 1841 1842 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 1843 return NL_SKIP; 1844 1845 if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 1846 sig_change->frequency) 1847 return NL_SKIP; 1848 1849 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 1850 return NL_SKIP; 1851 1852 sig_change->current_noise = 1853 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 1854 1855 return NL_SKIP; 1856} 1857 1858 1859static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv, 1860 struct wpa_signal_info *sig_change) 1861{ 1862 struct nl_msg *msg; 1863 1864 sig_change->current_noise = 9999; 1865 sig_change->frequency = drv->assoc_freq; 1866 1867 msg = nlmsg_alloc(); 1868 if (!msg) 1869 return -ENOMEM; 1870 1871 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 1872 1873 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1874 1875 return send_and_recv_msgs(drv, msg, get_link_noise, sig_change); 1876 nla_put_failure: 1877 nlmsg_free(msg); 1878 return -ENOBUFS; 1879} 1880 1881 1882static int get_noise_for_scan_results(struct nl_msg *msg, void *arg) 1883{ 1884 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1885 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1886 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 1887 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 1888 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 1889 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 1890 }; 1891 struct wpa_scan_results *scan_results = arg; 1892 struct wpa_scan_res *scan_res; 1893 size_t i; 1894 1895 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1896 genlmsg_attrlen(gnlh, 0), NULL); 1897 1898 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 1899 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing"); 1900 return NL_SKIP; 1901 } 1902 1903 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 1904 tb[NL80211_ATTR_SURVEY_INFO], 1905 survey_policy)) { 1906 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested " 1907 "attributes"); 1908 return NL_SKIP; 1909 } 1910 1911 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 1912 return NL_SKIP; 1913 1914 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 1915 return NL_SKIP; 1916 1917 for (i = 0; i < scan_results->num; ++i) { 1918 scan_res = scan_results->res[i]; 1919 if (!scan_res) 1920 continue; 1921 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 1922 scan_res->freq) 1923 continue; 1924 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID)) 1925 continue; 1926 scan_res->noise = (s8) 1927 nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 1928 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID; 1929 } 1930 1931 return NL_SKIP; 1932} 1933 1934 1935static int nl80211_get_noise_for_scan_results( 1936 struct wpa_driver_nl80211_data *drv, 1937 struct wpa_scan_results *scan_res) 1938{ 1939 struct nl_msg *msg; 1940 1941 msg = nlmsg_alloc(); 1942 if (!msg) 1943 return -ENOMEM; 1944 1945 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 1946 1947 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1948 1949 return send_and_recv_msgs(drv, msg, get_noise_for_scan_results, 1950 scan_res); 1951 nla_put_failure: 1952 nlmsg_free(msg); 1953 return -ENOBUFS; 1954} 1955 1956 1957static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv, 1958 struct nlattr *tb[]) 1959{ 1960 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 1961 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 1962 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 }, 1963 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 1964 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 }, 1965 }; 1966 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1]; 1967 enum nl80211_cqm_rssi_threshold_event event; 1968 union wpa_event_data ed; 1969 struct wpa_signal_info sig; 1970 int res; 1971 1972 if (tb[NL80211_ATTR_CQM] == NULL || 1973 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM], 1974 cqm_policy)) { 1975 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event"); 1976 return; 1977 } 1978 1979 os_memset(&ed, 0, sizeof(ed)); 1980 1981 if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) { 1982 if (!tb[NL80211_ATTR_MAC]) 1983 return; 1984 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]), 1985 ETH_ALEN); 1986 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed); 1987 return; 1988 } 1989 1990 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL) 1991 return; 1992 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]); 1993 1994 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) { 1995 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 1996 "event: RSSI high"); 1997 ed.signal_change.above_threshold = 1; 1998 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) { 1999 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 2000 "event: RSSI low"); 2001 ed.signal_change.above_threshold = 0; 2002 } else 2003 return; 2004 2005 res = nl80211_get_link_signal(drv, &sig); 2006 if (res == 0) { 2007 ed.signal_change.current_signal = sig.current_signal; 2008 ed.signal_change.current_txrate = sig.current_txrate; 2009 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm txrate: %d", 2010 sig.current_signal, sig.current_txrate); 2011 } 2012 2013 res = nl80211_get_link_noise(drv, &sig); 2014 if (res == 0) { 2015 ed.signal_change.current_noise = sig.current_noise; 2016 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm", 2017 sig.current_noise); 2018 } 2019 2020 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed); 2021} 2022 2023 2024static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv, 2025 struct nlattr **tb) 2026{ 2027 u8 *addr; 2028 union wpa_event_data data; 2029 2030 if (tb[NL80211_ATTR_MAC] == NULL) 2031 return; 2032 addr = nla_data(tb[NL80211_ATTR_MAC]); 2033 wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr)); 2034 2035 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { 2036 u8 *ies = NULL; 2037 size_t ies_len = 0; 2038 if (tb[NL80211_ATTR_IE]) { 2039 ies = nla_data(tb[NL80211_ATTR_IE]); 2040 ies_len = nla_len(tb[NL80211_ATTR_IE]); 2041 } 2042 wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len); 2043 drv_event_assoc(drv->ctx, addr, ies, ies_len, 0); 2044 return; 2045 } 2046 2047 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 2048 return; 2049 2050 os_memset(&data, 0, sizeof(data)); 2051 os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN); 2052 wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data); 2053} 2054 2055 2056static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv, 2057 struct nlattr **tb) 2058{ 2059 u8 *addr; 2060 union wpa_event_data data; 2061 2062 if (tb[NL80211_ATTR_MAC] == NULL) 2063 return; 2064 addr = nla_data(tb[NL80211_ATTR_MAC]); 2065 wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR, 2066 MAC2STR(addr)); 2067 2068 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { 2069 drv_event_disassoc(drv->ctx, addr); 2070 return; 2071 } 2072 2073 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 2074 return; 2075 2076 os_memset(&data, 0, sizeof(data)); 2077 os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN); 2078 wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data); 2079} 2080 2081 2082static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv, 2083 struct nlattr **tb) 2084{ 2085 struct nlattr *rekey_info[NUM_NL80211_REKEY_DATA]; 2086 static struct nla_policy rekey_policy[NUM_NL80211_REKEY_DATA] = { 2087 [NL80211_REKEY_DATA_KEK] = { 2088 .minlen = NL80211_KEK_LEN, 2089 .maxlen = NL80211_KEK_LEN, 2090 }, 2091 [NL80211_REKEY_DATA_KCK] = { 2092 .minlen = NL80211_KCK_LEN, 2093 .maxlen = NL80211_KCK_LEN, 2094 }, 2095 [NL80211_REKEY_DATA_REPLAY_CTR] = { 2096 .minlen = NL80211_REPLAY_CTR_LEN, 2097 .maxlen = NL80211_REPLAY_CTR_LEN, 2098 }, 2099 }; 2100 union wpa_event_data data; 2101 2102 if (!tb[NL80211_ATTR_MAC]) 2103 return; 2104 if (!tb[NL80211_ATTR_REKEY_DATA]) 2105 return; 2106 if (nla_parse_nested(rekey_info, MAX_NL80211_REKEY_DATA, 2107 tb[NL80211_ATTR_REKEY_DATA], rekey_policy)) 2108 return; 2109 if (!rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]) 2110 return; 2111 2112 os_memset(&data, 0, sizeof(data)); 2113 data.driver_gtk_rekey.bssid = nla_data(tb[NL80211_ATTR_MAC]); 2114 wpa_printf(MSG_DEBUG, "nl80211: Rekey offload event for BSSID " MACSTR, 2115 MAC2STR(data.driver_gtk_rekey.bssid)); 2116 data.driver_gtk_rekey.replay_ctr = 2117 nla_data(rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]); 2118 wpa_hexdump(MSG_DEBUG, "nl80211: Rekey offload - Replay Counter", 2119 data.driver_gtk_rekey.replay_ctr, NL80211_REPLAY_CTR_LEN); 2120 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_GTK_REKEY, &data); 2121} 2122 2123 2124static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv, 2125 struct nlattr **tb) 2126{ 2127 struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE]; 2128 static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = { 2129 [NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 }, 2130 [NL80211_PMKSA_CANDIDATE_BSSID] = { 2131 .minlen = ETH_ALEN, 2132 .maxlen = ETH_ALEN, 2133 }, 2134 [NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG }, 2135 }; 2136 union wpa_event_data data; 2137 2138 wpa_printf(MSG_DEBUG, "nl80211: PMKSA candidate event"); 2139 2140 if (!tb[NL80211_ATTR_PMKSA_CANDIDATE]) 2141 return; 2142 if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE, 2143 tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy)) 2144 return; 2145 if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] || 2146 !cand[NL80211_PMKSA_CANDIDATE_BSSID]) 2147 return; 2148 2149 os_memset(&data, 0, sizeof(data)); 2150 os_memcpy(data.pmkid_candidate.bssid, 2151 nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN); 2152 data.pmkid_candidate.index = 2153 nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]); 2154 data.pmkid_candidate.preauth = 2155 cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL; 2156 wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data); 2157} 2158 2159 2160static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv, 2161 struct nlattr **tb) 2162{ 2163 union wpa_event_data data; 2164 2165 wpa_printf(MSG_DEBUG, "nl80211: Probe client event"); 2166 2167 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_ACK]) 2168 return; 2169 2170 os_memset(&data, 0, sizeof(data)); 2171 os_memcpy(data.client_poll.addr, 2172 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2173 2174 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_CLIENT_POLL_OK, &data); 2175} 2176 2177 2178static void nl80211_tdls_oper_event(struct wpa_driver_nl80211_data *drv, 2179 struct nlattr **tb) 2180{ 2181 union wpa_event_data data; 2182 2183 wpa_printf(MSG_DEBUG, "nl80211: TDLS operation event"); 2184 2185 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_TDLS_OPERATION]) 2186 return; 2187 2188 os_memset(&data, 0, sizeof(data)); 2189 os_memcpy(data.tdls.peer, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2190 switch (nla_get_u8(tb[NL80211_ATTR_TDLS_OPERATION])) { 2191 case NL80211_TDLS_SETUP: 2192 wpa_printf(MSG_DEBUG, "nl80211: TDLS setup request for peer " 2193 MACSTR, MAC2STR(data.tdls.peer)); 2194 data.tdls.oper = TDLS_REQUEST_SETUP; 2195 break; 2196 case NL80211_TDLS_TEARDOWN: 2197 wpa_printf(MSG_DEBUG, "nl80211: TDLS teardown request for peer " 2198 MACSTR, MAC2STR(data.tdls.peer)); 2199 data.tdls.oper = TDLS_REQUEST_TEARDOWN; 2200 break; 2201 default: 2202 wpa_printf(MSG_DEBUG, "nl80211: Unsupported TDLS operatione " 2203 "event"); 2204 return; 2205 } 2206 if (tb[NL80211_ATTR_REASON_CODE]) { 2207 data.tdls.reason_code = 2208 nla_get_u16(tb[NL80211_ATTR_REASON_CODE]); 2209 } 2210 2211 wpa_supplicant_event(drv->ctx, EVENT_TDLS, &data); 2212} 2213 2214 2215static void nl80211_connect_failed_event(struct wpa_driver_nl80211_data *drv, 2216 struct nlattr **tb) 2217{ 2218 union wpa_event_data data; 2219 u32 reason; 2220 2221 wpa_printf(MSG_DEBUG, "nl80211: Connect failed event"); 2222 2223 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_CONN_FAILED_REASON]) 2224 return; 2225 2226 os_memset(&data, 0, sizeof(data)); 2227 os_memcpy(data.connect_failed_reason.addr, 2228 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2229 2230 reason = nla_get_u32(tb[NL80211_ATTR_CONN_FAILED_REASON]); 2231 switch (reason) { 2232 case NL80211_CONN_FAIL_MAX_CLIENTS: 2233 wpa_printf(MSG_DEBUG, "nl80211: Max client reached"); 2234 data.connect_failed_reason.code = MAX_CLIENT_REACHED; 2235 break; 2236 case NL80211_CONN_FAIL_BLOCKED_CLIENT: 2237 wpa_printf(MSG_DEBUG, "nl80211: Blocked client " MACSTR 2238 " tried to connect", 2239 MAC2STR(data.connect_failed_reason.addr)); 2240 data.connect_failed_reason.code = BLOCKED_CLIENT; 2241 break; 2242 default: 2243 wpa_printf(MSG_DEBUG, "nl8021l: Unknown connect failed reason " 2244 "%u", reason); 2245 return; 2246 } 2247 2248 wpa_supplicant_event(drv->ctx, EVENT_CONNECT_FAILED_REASON, &data); 2249} 2250 2251 2252static void nl80211_spurious_frame(struct i802_bss *bss, struct nlattr **tb, 2253 int wds) 2254{ 2255 struct wpa_driver_nl80211_data *drv = bss->drv; 2256 union wpa_event_data event; 2257 2258 if (!tb[NL80211_ATTR_MAC]) 2259 return; 2260 2261 os_memset(&event, 0, sizeof(event)); 2262 event.rx_from_unknown.bssid = bss->addr; 2263 event.rx_from_unknown.addr = nla_data(tb[NL80211_ATTR_MAC]); 2264 event.rx_from_unknown.wds = wds; 2265 2266 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 2267} 2268 2269 2270static void do_process_drv_event(struct i802_bss *bss, int cmd, 2271 struct nlattr **tb) 2272{ 2273 struct wpa_driver_nl80211_data *drv = bss->drv; 2274 2275 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED && 2276 (cmd == NL80211_CMD_NEW_SCAN_RESULTS || 2277 cmd == NL80211_CMD_SCAN_ABORTED)) { 2278 wpa_driver_nl80211_set_mode(&drv->first_bss, 2279 drv->ap_scan_as_station); 2280 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 2281 } 2282 2283 switch (cmd) { 2284 case NL80211_CMD_TRIGGER_SCAN: 2285 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Scan trigger"); 2286 break; 2287 case NL80211_CMD_START_SCHED_SCAN: 2288 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Sched scan started"); 2289 break; 2290 case NL80211_CMD_SCHED_SCAN_STOPPED: 2291 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Sched scan stopped"); 2292 wpa_supplicant_event(drv->ctx, EVENT_SCHED_SCAN_STOPPED, NULL); 2293 break; 2294 case NL80211_CMD_NEW_SCAN_RESULTS: 2295 wpa_dbg(drv->ctx, MSG_DEBUG, 2296 "nl80211: New scan results available"); 2297 drv->scan_complete_events = 1; 2298 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 2299 drv->ctx); 2300 send_scan_event(drv, 0, tb); 2301 break; 2302 case NL80211_CMD_SCHED_SCAN_RESULTS: 2303 wpa_dbg(drv->ctx, MSG_DEBUG, 2304 "nl80211: New sched scan results available"); 2305 send_scan_event(drv, 0, tb); 2306 break; 2307 case NL80211_CMD_SCAN_ABORTED: 2308 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Scan aborted"); 2309 /* 2310 * Need to indicate that scan results are available in order 2311 * not to make wpa_supplicant stop its scanning. 2312 */ 2313 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 2314 drv->ctx); 2315 send_scan_event(drv, 1, tb); 2316 break; 2317 case NL80211_CMD_AUTHENTICATE: 2318 case NL80211_CMD_ASSOCIATE: 2319 case NL80211_CMD_DEAUTHENTICATE: 2320 case NL80211_CMD_DISASSOCIATE: 2321 case NL80211_CMD_FRAME_TX_STATUS: 2322 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 2323 case NL80211_CMD_UNPROT_DISASSOCIATE: 2324 mlme_event(bss, cmd, tb[NL80211_ATTR_FRAME], 2325 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 2326 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 2327 tb[NL80211_ATTR_COOKIE], 2328 tb[NL80211_ATTR_RX_SIGNAL_DBM]); 2329 break; 2330 case NL80211_CMD_CONNECT: 2331 case NL80211_CMD_ROAM: 2332 mlme_event_connect(drv, cmd, 2333 tb[NL80211_ATTR_STATUS_CODE], 2334 tb[NL80211_ATTR_MAC], 2335 tb[NL80211_ATTR_REQ_IE], 2336 tb[NL80211_ATTR_RESP_IE]); 2337 break; 2338 case NL80211_CMD_CH_SWITCH_NOTIFY: 2339 mlme_event_ch_switch(drv, tb[NL80211_ATTR_WIPHY_FREQ], 2340 tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 2341 break; 2342 case NL80211_CMD_DISCONNECT: 2343 mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE], 2344 tb[NL80211_ATTR_MAC], 2345 tb[NL80211_ATTR_DISCONNECTED_BY_AP]); 2346 break; 2347 case NL80211_CMD_MICHAEL_MIC_FAILURE: 2348 mlme_event_michael_mic_failure(bss, tb); 2349 break; 2350 case NL80211_CMD_JOIN_IBSS: 2351 mlme_event_join_ibss(drv, tb); 2352 break; 2353 case NL80211_CMD_REMAIN_ON_CHANNEL: 2354 mlme_event_remain_on_channel(drv, 0, tb); 2355 break; 2356 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL: 2357 mlme_event_remain_on_channel(drv, 1, tb); 2358 break; 2359 case NL80211_CMD_NOTIFY_CQM: 2360 nl80211_cqm_event(drv, tb); 2361 break; 2362 case NL80211_CMD_REG_CHANGE: 2363 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change"); 2364 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 2365 NULL); 2366 break; 2367 case NL80211_CMD_REG_BEACON_HINT: 2368 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint"); 2369 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 2370 NULL); 2371 break; 2372 case NL80211_CMD_NEW_STATION: 2373 nl80211_new_station_event(drv, tb); 2374 break; 2375 case NL80211_CMD_DEL_STATION: 2376 nl80211_del_station_event(drv, tb); 2377 break; 2378 case NL80211_CMD_SET_REKEY_OFFLOAD: 2379 nl80211_rekey_offload_event(drv, tb); 2380 break; 2381 case NL80211_CMD_PMKSA_CANDIDATE: 2382 nl80211_pmksa_candidate_event(drv, tb); 2383 break; 2384 case NL80211_CMD_PROBE_CLIENT: 2385 nl80211_client_probe_event(drv, tb); 2386 break; 2387 case NL80211_CMD_TDLS_OPER: 2388 nl80211_tdls_oper_event(drv, tb); 2389 break; 2390 case NL80211_CMD_CONN_FAILED: 2391 nl80211_connect_failed_event(drv, tb); 2392 break; 2393 case NL80211_CMD_FT_EVENT: 2394 mlme_event_ft_event(drv, tb); 2395 break; 2396 default: 2397 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Ignored unknown event " 2398 "(cmd=%d)", cmd); 2399 break; 2400 } 2401} 2402 2403 2404static int process_drv_event(struct nl_msg *msg, void *arg) 2405{ 2406 struct wpa_driver_nl80211_data *drv = arg; 2407 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2408 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2409 struct i802_bss *bss; 2410 int ifidx = -1; 2411 2412 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2413 genlmsg_attrlen(gnlh, 0), NULL); 2414 2415 if (tb[NL80211_ATTR_IFINDEX]) 2416 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2417 2418 for (bss = &drv->first_bss; bss; bss = bss->next) { 2419 if (ifidx == -1 || ifidx == bss->ifindex) { 2420 do_process_drv_event(bss, gnlh->cmd, tb); 2421 return NL_SKIP; 2422 } 2423 } 2424 2425 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d) for foreign " 2426 "interface (ifindex %d)", gnlh->cmd, ifidx); 2427 2428 return NL_SKIP; 2429} 2430 2431 2432static int process_global_event(struct nl_msg *msg, void *arg) 2433{ 2434 struct nl80211_global *global = arg; 2435 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2436 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2437 struct wpa_driver_nl80211_data *drv, *tmp; 2438 int ifidx = -1; 2439 struct i802_bss *bss; 2440 2441 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2442 genlmsg_attrlen(gnlh, 0), NULL); 2443 2444 if (tb[NL80211_ATTR_IFINDEX]) 2445 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2446 2447 dl_list_for_each_safe(drv, tmp, &global->interfaces, 2448 struct wpa_driver_nl80211_data, list) { 2449 for (bss = &drv->first_bss; bss; bss = bss->next) { 2450 if (ifidx == -1 || ifidx == bss->ifindex) { 2451 do_process_drv_event(bss, gnlh->cmd, tb); 2452 return NL_SKIP; 2453 } 2454 } 2455 } 2456 2457 return NL_SKIP; 2458} 2459 2460 2461static int process_bss_event(struct nl_msg *msg, void *arg) 2462{ 2463 struct i802_bss *bss = arg; 2464 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2465 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2466 2467 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2468 genlmsg_attrlen(gnlh, 0), NULL); 2469 2470 switch (gnlh->cmd) { 2471 case NL80211_CMD_FRAME: 2472 case NL80211_CMD_FRAME_TX_STATUS: 2473 mlme_event(bss, gnlh->cmd, tb[NL80211_ATTR_FRAME], 2474 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 2475 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 2476 tb[NL80211_ATTR_COOKIE], 2477 tb[NL80211_ATTR_RX_SIGNAL_DBM]); 2478 break; 2479 case NL80211_CMD_UNEXPECTED_FRAME: 2480 nl80211_spurious_frame(bss, tb, 0); 2481 break; 2482 case NL80211_CMD_UNEXPECTED_4ADDR_FRAME: 2483 nl80211_spurious_frame(bss, tb, 1); 2484 break; 2485 default: 2486 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event " 2487 "(cmd=%d)", gnlh->cmd); 2488 break; 2489 } 2490 2491 return NL_SKIP; 2492} 2493 2494 2495static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx, 2496 void *handle) 2497{ 2498 struct nl_cb *cb = eloop_ctx; 2499 2500 wpa_printf(MSG_MSGDUMP, "nl80211: Event message available"); 2501 2502 nl_recvmsgs(handle, cb); 2503} 2504 2505 2506/** 2507 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain 2508 * @priv: driver_nl80211 private data 2509 * @alpha2_arg: country to which to switch to 2510 * Returns: 0 on success, -1 on failure 2511 * 2512 * This asks nl80211 to set the regulatory domain for given 2513 * country ISO / IEC alpha2. 2514 */ 2515static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg) 2516{ 2517 struct i802_bss *bss = priv; 2518 struct wpa_driver_nl80211_data *drv = bss->drv; 2519 char alpha2[3]; 2520 struct nl_msg *msg; 2521 2522 msg = nlmsg_alloc(); 2523 if (!msg) 2524 return -ENOMEM; 2525 2526 alpha2[0] = alpha2_arg[0]; 2527 alpha2[1] = alpha2_arg[1]; 2528 alpha2[2] = '\0'; 2529 2530 nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG); 2531 2532 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2); 2533 if (send_and_recv_msgs(drv, msg, NULL, NULL)) 2534 return -EINVAL; 2535 return 0; 2536nla_put_failure: 2537 nlmsg_free(msg); 2538 return -EINVAL; 2539} 2540 2541 2542static int protocol_feature_handler(struct nl_msg *msg, void *arg) 2543{ 2544 u32 *feat = arg; 2545 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 2546 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2547 2548 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2549 genlmsg_attrlen(gnlh, 0), NULL); 2550 2551 if (tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]) 2552 *feat = nla_get_u32(tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]); 2553 2554 return NL_SKIP; 2555} 2556 2557 2558static u32 get_nl80211_protocol_features(struct wpa_driver_nl80211_data *drv) 2559{ 2560 u32 feat = 0; 2561 struct nl_msg *msg; 2562 2563 msg = nlmsg_alloc(); 2564 if (!msg) 2565 goto nla_put_failure; 2566 2567 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_PROTOCOL_FEATURES); 2568 if (send_and_recv_msgs(drv, msg, protocol_feature_handler, &feat) == 0) 2569 return feat; 2570 2571 msg = NULL; 2572nla_put_failure: 2573 nlmsg_free(msg); 2574 return 0; 2575} 2576 2577 2578struct wiphy_info_data { 2579 struct wpa_driver_nl80211_data *drv; 2580 struct wpa_driver_capa *capa; 2581 2582 unsigned int error:1; 2583 unsigned int device_ap_sme:1; 2584 unsigned int poll_command_supported:1; 2585 unsigned int data_tx_status:1; 2586 unsigned int monitor_supported:1; 2587 unsigned int auth_supported:1; 2588 unsigned int connect_supported:1; 2589 unsigned int p2p_go_supported:1; 2590 unsigned int p2p_client_supported:1; 2591 unsigned int p2p_concurrent:1; 2592 unsigned int p2p_multichan_concurrent:1; 2593}; 2594 2595 2596static unsigned int probe_resp_offload_support(int supp_protocols) 2597{ 2598 unsigned int prot = 0; 2599 2600 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS) 2601 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS; 2602 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2) 2603 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2; 2604 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P) 2605 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P; 2606 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U) 2607 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING; 2608 2609 return prot; 2610} 2611 2612 2613static void wiphy_info_supported_iftypes(struct wiphy_info_data *info, 2614 struct nlattr *tb) 2615{ 2616 struct nlattr *nl_mode; 2617 int i; 2618 2619 if (tb == NULL) 2620 return; 2621 2622 nla_for_each_nested(nl_mode, tb, i) { 2623 switch (nla_type(nl_mode)) { 2624 case NL80211_IFTYPE_AP: 2625 info->capa->flags |= WPA_DRIVER_FLAGS_AP; 2626 break; 2627 case NL80211_IFTYPE_ADHOC: 2628 info->capa->flags |= WPA_DRIVER_FLAGS_IBSS; 2629 break; 2630 case NL80211_IFTYPE_P2P_GO: 2631 info->p2p_go_supported = 1; 2632 break; 2633 case NL80211_IFTYPE_P2P_CLIENT: 2634 info->p2p_client_supported = 1; 2635 break; 2636 case NL80211_IFTYPE_MONITOR: 2637 info->monitor_supported = 1; 2638 break; 2639 } 2640 } 2641} 2642 2643 2644static int wiphy_info_iface_comb_process(struct wiphy_info_data *info, 2645 struct nlattr *nl_combi) 2646{ 2647 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB]; 2648 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT]; 2649 struct nlattr *nl_limit, *nl_mode; 2650 int err, rem_limit, rem_mode; 2651 int combination_has_p2p = 0, combination_has_mgd = 0; 2652 static struct nla_policy 2653 iface_combination_policy[NUM_NL80211_IFACE_COMB] = { 2654 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED }, 2655 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 }, 2656 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG }, 2657 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 }, 2658 }, 2659 iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = { 2660 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED }, 2661 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 }, 2662 }; 2663 2664 err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB, 2665 nl_combi, iface_combination_policy); 2666 if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] || 2667 !tb_comb[NL80211_IFACE_COMB_MAXNUM] || 2668 !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) 2669 return 0; /* broken combination */ 2670 2671 nla_for_each_nested(nl_limit, tb_comb[NL80211_IFACE_COMB_LIMITS], 2672 rem_limit) { 2673 err = nla_parse_nested(tb_limit, MAX_NL80211_IFACE_LIMIT, 2674 nl_limit, iface_limit_policy); 2675 if (err || !tb_limit[NL80211_IFACE_LIMIT_TYPES]) 2676 return 0; /* broken combination */ 2677 2678 nla_for_each_nested(nl_mode, 2679 tb_limit[NL80211_IFACE_LIMIT_TYPES], 2680 rem_mode) { 2681 int ift = nla_type(nl_mode); 2682 if (ift == NL80211_IFTYPE_P2P_GO || 2683 ift == NL80211_IFTYPE_P2P_CLIENT) 2684 combination_has_p2p = 1; 2685 if (ift == NL80211_IFTYPE_STATION) 2686 combination_has_mgd = 1; 2687 } 2688 if (combination_has_p2p && combination_has_mgd) 2689 break; 2690 } 2691 2692 if (combination_has_p2p && combination_has_mgd) { 2693 info->p2p_concurrent = 1; 2694 if (nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) > 1) 2695 info->p2p_multichan_concurrent = 1; 2696 return 1; 2697 } 2698 2699 return 0; 2700} 2701 2702 2703static void wiphy_info_iface_comb(struct wiphy_info_data *info, 2704 struct nlattr *tb) 2705{ 2706 struct nlattr *nl_combi; 2707 int rem_combi; 2708 2709 if (tb == NULL) 2710 return; 2711 2712 nla_for_each_nested(nl_combi, tb, rem_combi) { 2713 if (wiphy_info_iface_comb_process(info, nl_combi) > 0) 2714 break; 2715 } 2716} 2717 2718 2719static void wiphy_info_supp_cmds(struct wiphy_info_data *info, 2720 struct nlattr *tb) 2721{ 2722 struct nlattr *nl_cmd; 2723 int i; 2724 2725 if (tb == NULL) 2726 return; 2727 2728 nla_for_each_nested(nl_cmd, tb, i) { 2729 switch (nla_get_u32(nl_cmd)) { 2730 case NL80211_CMD_AUTHENTICATE: 2731 info->auth_supported = 1; 2732 break; 2733 case NL80211_CMD_CONNECT: 2734 info->connect_supported = 1; 2735 break; 2736 case NL80211_CMD_START_SCHED_SCAN: 2737 info->capa->sched_scan_supported = 1; 2738 break; 2739 case NL80211_CMD_PROBE_CLIENT: 2740 info->poll_command_supported = 1; 2741 break; 2742 } 2743 } 2744} 2745 2746 2747static void wiphy_info_max_roc(struct wpa_driver_capa *capa, 2748 struct nlattr *tb) 2749{ 2750 if (tb) 2751 capa->max_remain_on_chan = nla_get_u32(tb); 2752} 2753 2754 2755static void wiphy_info_tdls(struct wpa_driver_capa *capa, struct nlattr *tdls, 2756 struct nlattr *ext_setup) 2757{ 2758 if (tdls == NULL) 2759 return; 2760 2761 wpa_printf(MSG_DEBUG, "nl80211: TDLS supported"); 2762 capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT; 2763 2764 if (ext_setup) { 2765 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup"); 2766 capa->flags |= WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP; 2767 } 2768} 2769 2770 2771static void wiphy_info_feature_flags(struct wiphy_info_data *info, 2772 struct nlattr *tb) 2773{ 2774 u32 flags; 2775 struct wpa_driver_capa *capa = info->capa; 2776 2777 if (tb == NULL) 2778 return; 2779 2780 flags = nla_get_u32(tb); 2781 2782 if (flags & NL80211_FEATURE_SK_TX_STATUS) 2783 info->data_tx_status = 1; 2784 2785 if (flags & NL80211_FEATURE_INACTIVITY_TIMER) 2786 capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER; 2787 2788 if (flags & NL80211_FEATURE_SAE) 2789 capa->flags |= WPA_DRIVER_FLAGS_SAE; 2790 2791 if (flags & NL80211_FEATURE_NEED_OBSS_SCAN) 2792 capa->flags |= WPA_DRIVER_FLAGS_OBSS_SCAN; 2793} 2794 2795 2796static void wiphy_info_probe_resp_offload(struct wpa_driver_capa *capa, 2797 struct nlattr *tb) 2798{ 2799 u32 protocols; 2800 2801 if (tb == NULL) 2802 return; 2803 2804 protocols = nla_get_u32(tb); 2805 wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response offload in AP " 2806 "mode"); 2807 capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD; 2808 capa->probe_resp_offloads = probe_resp_offload_support(protocols); 2809} 2810 2811 2812static int wiphy_info_handler(struct nl_msg *msg, void *arg) 2813{ 2814 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2815 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2816 struct wiphy_info_data *info = arg; 2817 struct wpa_driver_capa *capa = info->capa; 2818 struct wpa_driver_nl80211_data *drv = info->drv; 2819 2820 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2821 genlmsg_attrlen(gnlh, 0), NULL); 2822 2823 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]) 2824 capa->max_scan_ssids = 2825 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]); 2826 2827 if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]) 2828 capa->max_sched_scan_ssids = 2829 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]); 2830 2831 if (tb[NL80211_ATTR_MAX_MATCH_SETS]) 2832 capa->max_match_sets = 2833 nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]); 2834 2835 wiphy_info_supported_iftypes(info, tb[NL80211_ATTR_SUPPORTED_IFTYPES]); 2836 wiphy_info_iface_comb(info, tb[NL80211_ATTR_INTERFACE_COMBINATIONS]); 2837 wiphy_info_supp_cmds(info, tb[NL80211_ATTR_SUPPORTED_COMMANDS]); 2838 2839 if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) { 2840 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based " 2841 "off-channel TX"); 2842 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX; 2843 } 2844 2845 if (tb[NL80211_ATTR_ROAM_SUPPORT]) { 2846 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming"); 2847 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION; 2848 } 2849 2850 wiphy_info_max_roc(capa, 2851 tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]); 2852 2853 if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD]) 2854 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD; 2855 2856 wiphy_info_tdls(capa, tb[NL80211_ATTR_TDLS_SUPPORT], 2857 tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]); 2858 2859 if (tb[NL80211_ATTR_DEVICE_AP_SME]) 2860 info->device_ap_sme = 1; 2861 2862 wiphy_info_feature_flags(info, tb[NL80211_ATTR_FEATURE_FLAGS]); 2863 wiphy_info_probe_resp_offload(capa, 2864 tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]); 2865 2866 if (tb[NL80211_ATTR_EXT_CAPA] && tb[NL80211_ATTR_EXT_CAPA_MASK] && 2867 drv->extended_capa == NULL) { 2868 drv->extended_capa = 2869 os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA])); 2870 if (drv->extended_capa) { 2871 os_memcpy(drv->extended_capa, 2872 nla_data(tb[NL80211_ATTR_EXT_CAPA]), 2873 nla_len(tb[NL80211_ATTR_EXT_CAPA])); 2874 drv->extended_capa_len = 2875 nla_len(tb[NL80211_ATTR_EXT_CAPA]); 2876 } 2877 drv->extended_capa_mask = 2878 os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA])); 2879 if (drv->extended_capa_mask) { 2880 os_memcpy(drv->extended_capa_mask, 2881 nla_data(tb[NL80211_ATTR_EXT_CAPA]), 2882 nla_len(tb[NL80211_ATTR_EXT_CAPA])); 2883 } else { 2884 os_free(drv->extended_capa); 2885 drv->extended_capa = NULL; 2886 drv->extended_capa_len = 0; 2887 } 2888 } 2889 2890 return NL_SKIP; 2891} 2892 2893 2894static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv, 2895 struct wiphy_info_data *info) 2896{ 2897 u32 feat; 2898 struct nl_msg *msg; 2899 2900 os_memset(info, 0, sizeof(*info)); 2901 info->capa = &drv->capa; 2902 info->drv = drv; 2903 2904 msg = nlmsg_alloc(); 2905 if (!msg) 2906 return -1; 2907 2908 feat = get_nl80211_protocol_features(drv); 2909 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) 2910 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_WIPHY); 2911 else 2912 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 2913 2914 NLA_PUT_FLAG(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP); 2915 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex); 2916 2917 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info)) 2918 return -1; 2919 2920 if (info->auth_supported) 2921 drv->capa.flags |= WPA_DRIVER_FLAGS_SME; 2922 else if (!info->connect_supported) { 2923 wpa_printf(MSG_INFO, "nl80211: Driver does not support " 2924 "authentication/association or connect commands"); 2925 info->error = 1; 2926 } 2927 2928 if (info->p2p_go_supported && info->p2p_client_supported) 2929 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE; 2930 if (info->p2p_concurrent) { 2931 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 2932 "interface (driver advertised support)"); 2933 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 2934 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 2935 } 2936 if (info->p2p_multichan_concurrent) { 2937 wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel " 2938 "concurrent (driver advertised support)"); 2939 drv->capa.flags |= WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT; 2940 } 2941 2942 /* default to 5000 since early versions of mac80211 don't set it */ 2943 if (!drv->capa.max_remain_on_chan) 2944 drv->capa.max_remain_on_chan = 5000; 2945 2946 return 0; 2947nla_put_failure: 2948 nlmsg_free(msg); 2949 return -1; 2950} 2951 2952 2953static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv) 2954{ 2955 struct wiphy_info_data info; 2956 if (wpa_driver_nl80211_get_info(drv, &info)) 2957 return -1; 2958 2959 if (info.error) 2960 return -1; 2961 2962 drv->has_capability = 1; 2963 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */ 2964 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA | 2965 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK | 2966 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | 2967 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK; 2968 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 | 2969 WPA_DRIVER_CAPA_ENC_WEP104 | 2970 WPA_DRIVER_CAPA_ENC_TKIP | 2971 WPA_DRIVER_CAPA_ENC_CCMP; 2972 drv->capa.auth = WPA_DRIVER_AUTH_OPEN | 2973 WPA_DRIVER_AUTH_SHARED | 2974 WPA_DRIVER_AUTH_LEAP; 2975 2976 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES; 2977 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE; 2978 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 2979 2980 if (!info.device_ap_sme) { 2981 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS; 2982 2983 /* 2984 * No AP SME is currently assumed to also indicate no AP MLME 2985 * in the driver/firmware. 2986 */ 2987 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME; 2988 } 2989 2990 drv->device_ap_sme = info.device_ap_sme; 2991 drv->poll_command_supported = info.poll_command_supported; 2992 drv->data_tx_status = info.data_tx_status; 2993 2994#ifdef ANDROID_P2P 2995 if(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) { 2996 /* Driver is new enough to support monitorless mode*/ 2997 wpa_printf(MSG_DEBUG, "nl80211: Driver is new " 2998 "enough to support monitor-less mode"); 2999 drv->use_monitor = 0; 3000 } 3001#else 3002 /* 3003 * If poll command and tx status are supported, mac80211 is new enough 3004 * to have everything we need to not need monitor interfaces. 3005 */ 3006 drv->use_monitor = !info.poll_command_supported || !info.data_tx_status; 3007#endif 3008 3009 if (drv->device_ap_sme && drv->use_monitor) { 3010 /* 3011 * Non-mac80211 drivers may not support monitor interface. 3012 * Make sure we do not get stuck with incorrect capability here 3013 * by explicitly testing this. 3014 */ 3015 if (!info.monitor_supported) { 3016 wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor " 3017 "with device_ap_sme since no monitor mode " 3018 "support detected"); 3019 drv->use_monitor = 0; 3020 } 3021 } 3022 3023 /* 3024 * If we aren't going to use monitor interfaces, but the 3025 * driver doesn't support data TX status, we won't get TX 3026 * status for EAPOL frames. 3027 */ 3028 if (!drv->use_monitor && !info.data_tx_status) 3029 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 3030 3031 return 0; 3032} 3033 3034 3035#ifdef ANDROID 3036static int android_genl_ctrl_resolve(struct nl_handle *handle, 3037 const char *name) 3038{ 3039 /* 3040 * Android ICS has very minimal genl_ctrl_resolve() implementation, so 3041 * need to work around that. 3042 */ 3043 struct nl_cache *cache = NULL; 3044 struct genl_family *nl80211 = NULL; 3045 int id = -1; 3046 3047 if (genl_ctrl_alloc_cache(handle, &cache) < 0) { 3048 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic " 3049 "netlink cache"); 3050 goto fail; 3051 } 3052 3053 nl80211 = genl_ctrl_search_by_name(cache, name); 3054 if (nl80211 == NULL) 3055 goto fail; 3056 3057 id = genl_family_get_id(nl80211); 3058 3059fail: 3060 if (nl80211) 3061 genl_family_put(nl80211); 3062 if (cache) 3063 nl_cache_free(cache); 3064 3065 return id; 3066} 3067#define genl_ctrl_resolve android_genl_ctrl_resolve 3068#endif /* ANDROID */ 3069 3070 3071static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global) 3072{ 3073 int ret; 3074 3075 global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 3076 if (global->nl_cb == NULL) { 3077 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 3078 "callbacks"); 3079 return -1; 3080 } 3081 3082 global->nl = nl_create_handle(global->nl_cb, "nl"); 3083 if (global->nl == NULL) 3084 goto err; 3085 3086 global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211"); 3087 if (global->nl80211_id < 0) { 3088 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not " 3089 "found"); 3090 goto err; 3091 } 3092 3093 global->nl_event = nl_create_handle(global->nl_cb, "event"); 3094 if (global->nl_event == NULL) 3095 goto err; 3096 3097 ret = nl_get_multicast_id(global, "nl80211", "scan"); 3098 if (ret >= 0) 3099 ret = nl_socket_add_membership(global->nl_event, ret); 3100 if (ret < 0) { 3101 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 3102 "membership for scan events: %d (%s)", 3103 ret, strerror(-ret)); 3104 goto err; 3105 } 3106 3107 ret = nl_get_multicast_id(global, "nl80211", "mlme"); 3108 if (ret >= 0) 3109 ret = nl_socket_add_membership(global->nl_event, ret); 3110 if (ret < 0) { 3111 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 3112 "membership for mlme events: %d (%s)", 3113 ret, strerror(-ret)); 3114 goto err; 3115 } 3116 3117 ret = nl_get_multicast_id(global, "nl80211", "regulatory"); 3118 if (ret >= 0) 3119 ret = nl_socket_add_membership(global->nl_event, ret); 3120 if (ret < 0) { 3121 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast " 3122 "membership for regulatory events: %d (%s)", 3123 ret, strerror(-ret)); 3124 /* Continue without regulatory events */ 3125 } 3126 3127 nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 3128 no_seq_check, NULL); 3129 nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 3130 process_global_event, global); 3131 3132 eloop_register_read_sock(nl_socket_get_fd(global->nl_event), 3133 wpa_driver_nl80211_event_receive, 3134 global->nl_cb, global->nl_event); 3135 3136 return 0; 3137 3138err: 3139 nl_destroy_handles(&global->nl_event); 3140 nl_destroy_handles(&global->nl); 3141 nl_cb_put(global->nl_cb); 3142 global->nl_cb = NULL; 3143 return -1; 3144} 3145 3146 3147static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv) 3148{ 3149 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 3150 if (!drv->nl_cb) { 3151 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct"); 3152 return -1; 3153 } 3154 3155 nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 3156 no_seq_check, NULL); 3157 nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 3158 process_drv_event, drv); 3159 3160 return 0; 3161} 3162 3163 3164static void wpa_driver_nl80211_rfkill_blocked(void *ctx) 3165{ 3166 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked"); 3167 /* 3168 * This may be for any interface; use ifdown event to disable 3169 * interface. 3170 */ 3171} 3172 3173 3174static void wpa_driver_nl80211_rfkill_unblocked(void *ctx) 3175{ 3176 struct wpa_driver_nl80211_data *drv = ctx; 3177 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked"); 3178 if (linux_set_iface_flags(drv->global->ioctl_sock, 3179 drv->first_bss.ifname, 1)) { 3180 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP " 3181 "after rfkill unblock"); 3182 return; 3183 } 3184 /* rtnetlink ifup handler will report interface as enabled */ 3185} 3186 3187 3188static void nl80211_get_phy_name(struct wpa_driver_nl80211_data *drv) 3189{ 3190 /* Find phy (radio) to which this interface belongs */ 3191 char buf[90], *pos; 3192 int f, rv; 3193 3194 drv->phyname[0] = '\0'; 3195 snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name", 3196 drv->first_bss.ifname); 3197 f = open(buf, O_RDONLY); 3198 if (f < 0) { 3199 wpa_printf(MSG_DEBUG, "Could not open file %s: %s", 3200 buf, strerror(errno)); 3201 return; 3202 } 3203 3204 rv = read(f, drv->phyname, sizeof(drv->phyname) - 1); 3205 close(f); 3206 if (rv < 0) { 3207 wpa_printf(MSG_DEBUG, "Could not read file %s: %s", 3208 buf, strerror(errno)); 3209 return; 3210 } 3211 3212 drv->phyname[rv] = '\0'; 3213 pos = os_strchr(drv->phyname, '\n'); 3214 if (pos) 3215 *pos = '\0'; 3216 wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s", 3217 drv->first_bss.ifname, drv->phyname); 3218} 3219 3220 3221static void wpa_driver_nl80211_handle_eapol_tx_status(int sock, 3222 void *eloop_ctx, 3223 void *handle) 3224{ 3225 struct wpa_driver_nl80211_data *drv = eloop_ctx; 3226 u8 data[2048]; 3227 struct msghdr msg; 3228 struct iovec entry; 3229 u8 control[512]; 3230 struct cmsghdr *cmsg; 3231 int res, found_ee = 0, found_wifi = 0, acked = 0; 3232 union wpa_event_data event; 3233 3234 memset(&msg, 0, sizeof(msg)); 3235 msg.msg_iov = &entry; 3236 msg.msg_iovlen = 1; 3237 entry.iov_base = data; 3238 entry.iov_len = sizeof(data); 3239 msg.msg_control = &control; 3240 msg.msg_controllen = sizeof(control); 3241 3242 res = recvmsg(sock, &msg, MSG_ERRQUEUE); 3243 /* if error or not fitting 802.3 header, return */ 3244 if (res < 14) 3245 return; 3246 3247 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) 3248 { 3249 if (cmsg->cmsg_level == SOL_SOCKET && 3250 cmsg->cmsg_type == SCM_WIFI_STATUS) { 3251 int *ack; 3252 3253 found_wifi = 1; 3254 ack = (void *)CMSG_DATA(cmsg); 3255 acked = *ack; 3256 } 3257 3258 if (cmsg->cmsg_level == SOL_PACKET && 3259 cmsg->cmsg_type == PACKET_TX_TIMESTAMP) { 3260 struct sock_extended_err *err = 3261 (struct sock_extended_err *)CMSG_DATA(cmsg); 3262 3263 if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS) 3264 found_ee = 1; 3265 } 3266 } 3267 3268 if (!found_ee || !found_wifi) 3269 return; 3270 3271 memset(&event, 0, sizeof(event)); 3272 event.eapol_tx_status.dst = data; 3273 event.eapol_tx_status.data = data + 14; 3274 event.eapol_tx_status.data_len = res - 14; 3275 event.eapol_tx_status.ack = acked; 3276 wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event); 3277} 3278 3279 3280static int nl80211_init_bss(struct i802_bss *bss) 3281{ 3282 bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 3283 if (!bss->nl_cb) 3284 return -1; 3285 3286 nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 3287 no_seq_check, NULL); 3288 nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 3289 process_bss_event, bss); 3290 3291 return 0; 3292} 3293 3294 3295static void nl80211_destroy_bss(struct i802_bss *bss) 3296{ 3297 nl_cb_put(bss->nl_cb); 3298 bss->nl_cb = NULL; 3299} 3300 3301 3302/** 3303 * wpa_driver_nl80211_init - Initialize nl80211 driver interface 3304 * @ctx: context to be used when calling wpa_supplicant functions, 3305 * e.g., wpa_supplicant_event() 3306 * @ifname: interface name, e.g., wlan0 3307 * @global_priv: private driver global data from global_init() 3308 * Returns: Pointer to private data, %NULL on failure 3309 */ 3310static void * wpa_driver_nl80211_init(void *ctx, const char *ifname, 3311 void *global_priv) 3312{ 3313 struct wpa_driver_nl80211_data *drv; 3314 struct rfkill_config *rcfg; 3315 struct i802_bss *bss; 3316 3317 if (global_priv == NULL) 3318 return NULL; 3319 drv = os_zalloc(sizeof(*drv)); 3320 if (drv == NULL) 3321 return NULL; 3322 drv->global = global_priv; 3323 drv->ctx = ctx; 3324 bss = &drv->first_bss; 3325 bss->drv = drv; 3326 bss->ctx = ctx; 3327 3328 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname)); 3329 drv->monitor_ifidx = -1; 3330 drv->monitor_sock = -1; 3331 drv->eapol_tx_sock = -1; 3332 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 3333 3334 if (wpa_driver_nl80211_init_nl(drv)) { 3335 os_free(drv); 3336 return NULL; 3337 } 3338 3339 if (nl80211_init_bss(bss)) 3340 goto failed; 3341 3342 nl80211_get_phy_name(drv); 3343 3344 rcfg = os_zalloc(sizeof(*rcfg)); 3345 if (rcfg == NULL) 3346 goto failed; 3347 rcfg->ctx = drv; 3348 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname)); 3349 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked; 3350 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked; 3351 drv->rfkill = rfkill_init(rcfg); 3352 if (drv->rfkill == NULL) { 3353 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available"); 3354 os_free(rcfg); 3355 } 3356 3357 if (wpa_driver_nl80211_finish_drv_init(drv)) 3358 goto failed; 3359 3360 drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0); 3361 if (drv->eapol_tx_sock < 0) 3362 goto failed; 3363 3364 if (drv->data_tx_status) { 3365 int enabled = 1; 3366 3367 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS, 3368 &enabled, sizeof(enabled)) < 0) { 3369 wpa_printf(MSG_DEBUG, 3370 "nl80211: wifi status sockopt failed\n"); 3371 drv->data_tx_status = 0; 3372 if (!drv->use_monitor) 3373 drv->capa.flags &= 3374 ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 3375 } else { 3376 eloop_register_read_sock(drv->eapol_tx_sock, 3377 wpa_driver_nl80211_handle_eapol_tx_status, 3378 drv, NULL); 3379 } 3380 } 3381 3382 if (drv->global) { 3383 dl_list_add(&drv->global->interfaces, &drv->list); 3384 drv->in_interface_list = 1; 3385 } 3386 3387 return bss; 3388 3389failed: 3390 wpa_driver_nl80211_deinit(bss); 3391 return NULL; 3392} 3393 3394 3395static int nl80211_register_frame(struct i802_bss *bss, 3396 struct nl_handle *nl_handle, 3397 u16 type, const u8 *match, size_t match_len) 3398{ 3399 struct wpa_driver_nl80211_data *drv = bss->drv; 3400 struct nl_msg *msg; 3401 int ret = -1; 3402 3403 msg = nlmsg_alloc(); 3404 if (!msg) 3405 return -1; 3406 3407 wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x nl_handle=%p", 3408 type, nl_handle); 3409 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 3410 match, match_len); 3411 3412 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION); 3413 3414 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 3415 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type); 3416 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match); 3417 3418 ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL); 3419 msg = NULL; 3420 if (ret) { 3421 wpa_printf(MSG_DEBUG, "nl80211: Register frame command " 3422 "failed (type=%u): ret=%d (%s)", 3423 type, ret, strerror(-ret)); 3424 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 3425 match, match_len); 3426 goto nla_put_failure; 3427 } 3428 ret = 0; 3429nla_put_failure: 3430 nlmsg_free(msg); 3431 return ret; 3432} 3433 3434 3435static int nl80211_alloc_mgmt_handle(struct i802_bss *bss) 3436{ 3437 struct wpa_driver_nl80211_data *drv = bss->drv; 3438 3439 if (bss->nl_mgmt) { 3440 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting " 3441 "already on! (nl_mgmt=%p)", bss->nl_mgmt); 3442 return -1; 3443 } 3444 3445 bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt"); 3446 if (bss->nl_mgmt == NULL) 3447 return -1; 3448 3449 eloop_register_read_sock(nl_socket_get_fd(bss->nl_mgmt), 3450 wpa_driver_nl80211_event_receive, bss->nl_cb, 3451 bss->nl_mgmt); 3452 3453 return 0; 3454} 3455 3456 3457static int nl80211_register_action_frame(struct i802_bss *bss, 3458 const u8 *match, size_t match_len) 3459{ 3460 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4); 3461 return nl80211_register_frame(bss, bss->nl_mgmt, 3462 type, match, match_len); 3463} 3464 3465 3466static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss) 3467{ 3468 struct wpa_driver_nl80211_data *drv = bss->drv; 3469 3470 if (nl80211_alloc_mgmt_handle(bss)) 3471 return -1; 3472 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP " 3473 "handle %p", bss->nl_mgmt); 3474 3475#if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING) 3476 /* GAS Initial Request */ 3477 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0) 3478 return -1; 3479 /* GAS Initial Response */ 3480 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0) 3481 return -1; 3482 /* GAS Comeback Request */ 3483 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0) 3484 return -1; 3485 /* GAS Comeback Response */ 3486 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0) 3487 return -1; 3488#endif /* CONFIG_P2P || CONFIG_INTERWORKING */ 3489#ifdef CONFIG_P2P 3490 /* P2P Public Action */ 3491 if (nl80211_register_action_frame(bss, 3492 (u8 *) "\x04\x09\x50\x6f\x9a\x09", 3493 6) < 0) 3494 return -1; 3495 /* P2P Action */ 3496 if (nl80211_register_action_frame(bss, 3497 (u8 *) "\x7f\x50\x6f\x9a\x09", 3498 5) < 0) 3499 return -1; 3500#endif /* CONFIG_P2P */ 3501#ifdef CONFIG_IEEE80211W 3502 /* SA Query Response */ 3503 if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0) 3504 return -1; 3505#endif /* CONFIG_IEEE80211W */ 3506#ifdef CONFIG_TDLS 3507 if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) { 3508 /* TDLS Discovery Response */ 3509 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) < 3510 0) 3511 return -1; 3512 } 3513#endif /* CONFIG_TDLS */ 3514 3515 /* FT Action frames */ 3516 if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0) 3517 return -1; 3518 else 3519 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT | 3520 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK; 3521 3522 /* WNM - BSS Transition Management Request */ 3523 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0) 3524 return -1; 3525 /* WNM-Sleep Mode Response */ 3526 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0) 3527 return -1; 3528 3529 return 0; 3530} 3531 3532 3533static int nl80211_register_spurious_class3(struct i802_bss *bss) 3534{ 3535 struct wpa_driver_nl80211_data *drv = bss->drv; 3536 struct nl_msg *msg; 3537 int ret = -1; 3538 3539 msg = nlmsg_alloc(); 3540 if (!msg) 3541 return -1; 3542 3543 nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME); 3544 3545 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 3546 3547 ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL); 3548 msg = NULL; 3549 if (ret) { 3550 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 " 3551 "failed: ret=%d (%s)", 3552 ret, strerror(-ret)); 3553 goto nla_put_failure; 3554 } 3555 ret = 0; 3556nla_put_failure: 3557 nlmsg_free(msg); 3558 return ret; 3559} 3560 3561 3562static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss) 3563{ 3564 static const int stypes[] = { 3565 WLAN_FC_STYPE_AUTH, 3566 WLAN_FC_STYPE_ASSOC_REQ, 3567 WLAN_FC_STYPE_REASSOC_REQ, 3568 WLAN_FC_STYPE_DISASSOC, 3569 WLAN_FC_STYPE_DEAUTH, 3570 WLAN_FC_STYPE_ACTION, 3571 WLAN_FC_STYPE_PROBE_REQ, 3572/* Beacon doesn't work as mac80211 doesn't currently allow 3573 * it, but it wouldn't really be the right thing anyway as 3574 * it isn't per interface ... maybe just dump the scan 3575 * results periodically for OLBC? 3576 */ 3577// WLAN_FC_STYPE_BEACON, 3578 }; 3579 unsigned int i; 3580 3581 if (nl80211_alloc_mgmt_handle(bss)) 3582 return -1; 3583 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 3584 "handle %p", bss->nl_mgmt); 3585 3586 for (i = 0; i < sizeof(stypes) / sizeof(stypes[0]); i++) { 3587 if (nl80211_register_frame(bss, bss->nl_mgmt, 3588 (WLAN_FC_TYPE_MGMT << 2) | 3589 (stypes[i] << 4), 3590 NULL, 0) < 0) { 3591 goto out_err; 3592 } 3593 } 3594 3595 if (nl80211_register_spurious_class3(bss)) 3596 goto out_err; 3597 3598 if (nl80211_get_wiphy_data_ap(bss) == NULL) 3599 goto out_err; 3600 3601 return 0; 3602 3603out_err: 3604 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3605 nl_destroy_handles(&bss->nl_mgmt); 3606 return -1; 3607} 3608 3609 3610static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss) 3611{ 3612 if (nl80211_alloc_mgmt_handle(bss)) 3613 return -1; 3614 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 3615 "handle %p (device SME)", bss->nl_mgmt); 3616 3617 if (nl80211_register_frame(bss, bss->nl_mgmt, 3618 (WLAN_FC_TYPE_MGMT << 2) | 3619 (WLAN_FC_STYPE_ACTION << 4), 3620 NULL, 0) < 0) 3621 goto out_err; 3622 3623 return 0; 3624 3625out_err: 3626 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3627 nl_destroy_handles(&bss->nl_mgmt); 3628 return -1; 3629} 3630 3631 3632static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason) 3633{ 3634 if (bss->nl_mgmt == NULL) 3635 return; 3636 wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p " 3637 "(%s)", bss->nl_mgmt, reason); 3638 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3639 nl_destroy_handles(&bss->nl_mgmt); 3640 3641 nl80211_put_wiphy_data_ap(bss); 3642} 3643 3644 3645static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx) 3646{ 3647 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL); 3648} 3649 3650 3651static int 3652wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv) 3653{ 3654 struct i802_bss *bss = &drv->first_bss; 3655 int send_rfkill_event = 0; 3656 3657 drv->ifindex = if_nametoindex(bss->ifname); 3658 drv->first_bss.ifindex = drv->ifindex; 3659 3660#ifndef HOSTAPD 3661 /* 3662 * Make sure the interface starts up in station mode unless this is a 3663 * dynamically added interface (e.g., P2P) that was already configured 3664 * with proper iftype. 3665 */ 3666 if (drv->ifindex != drv->global->if_add_ifindex && 3667 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION) < 0) { 3668 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver to " 3669 "use managed mode"); 3670 return -1; 3671 } 3672 3673 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { 3674 if (rfkill_is_blocked(drv->rfkill)) { 3675 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable " 3676 "interface '%s' due to rfkill", 3677 bss->ifname); 3678 drv->if_disabled = 1; 3679 send_rfkill_event = 1; 3680 } else { 3681 wpa_printf(MSG_ERROR, "nl80211: Could not set " 3682 "interface '%s' UP", bss->ifname); 3683 return -1; 3684 } 3685 } 3686 3687 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 3688 1, IF_OPER_DORMANT); 3689#endif /* HOSTAPD */ 3690 3691 if (wpa_driver_nl80211_capa(drv)) 3692 return -1; 3693 3694 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 3695 bss->addr)) 3696 return -1; 3697 3698 if (send_rfkill_event) { 3699 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill, 3700 drv, drv->ctx); 3701 } 3702 3703 return 0; 3704} 3705 3706 3707static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv) 3708{ 3709 struct nl_msg *msg; 3710 3711 msg = nlmsg_alloc(); 3712 if (!msg) 3713 return -ENOMEM; 3714 3715 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON); 3716 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3717 3718 return send_and_recv_msgs(drv, msg, NULL, NULL); 3719 nla_put_failure: 3720 nlmsg_free(msg); 3721 return -ENOBUFS; 3722} 3723 3724 3725/** 3726 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface 3727 * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init() 3728 * 3729 * Shut down driver interface and processing of driver events. Free 3730 * private data buffer if one was allocated in wpa_driver_nl80211_init(). 3731 */ 3732static void wpa_driver_nl80211_deinit(struct i802_bss *bss) 3733{ 3734 struct wpa_driver_nl80211_data *drv = bss->drv; 3735 3736 bss->in_deinit = 1; 3737 if (drv->data_tx_status) 3738 eloop_unregister_read_sock(drv->eapol_tx_sock); 3739 if (drv->eapol_tx_sock >= 0) 3740 close(drv->eapol_tx_sock); 3741 3742 if (bss->nl_preq) 3743 wpa_driver_nl80211_probe_req_report(bss, 0); 3744 if (bss->added_if_into_bridge) { 3745 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 3746 bss->ifname) < 0) 3747 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 3748 "interface %s from bridge %s: %s", 3749 bss->ifname, bss->brname, strerror(errno)); 3750 } 3751 if (bss->added_bridge) { 3752 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 3753 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 3754 "bridge %s: %s", 3755 bss->brname, strerror(errno)); 3756 } 3757 3758 nl80211_remove_monitor_interface(drv); 3759 3760 if (is_ap_interface(drv->nlmode)) 3761 wpa_driver_nl80211_del_beacon(drv); 3762 3763#ifdef HOSTAPD 3764 if (drv->last_freq_ht) { 3765 /* Clear HT flags from the driver */ 3766 struct hostapd_freq_params freq; 3767 os_memset(&freq, 0, sizeof(freq)); 3768 freq.freq = drv->last_freq; 3769 wpa_driver_nl80211_set_freq(bss, &freq); 3770 } 3771 3772 if (drv->eapol_sock >= 0) { 3773 eloop_unregister_read_sock(drv->eapol_sock); 3774 close(drv->eapol_sock); 3775 } 3776 3777 if (drv->if_indices != drv->default_if_indices) 3778 os_free(drv->if_indices); 3779#endif /* HOSTAPD */ 3780 3781 if (drv->disabled_11b_rates) 3782 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 3783 3784 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0, 3785 IF_OPER_UP); 3786 rfkill_deinit(drv->rfkill); 3787 3788 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 3789 3790 (void) linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0); 3791 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION); 3792 nl80211_mgmt_unsubscribe(bss, "deinit"); 3793 3794 nl_cb_put(drv->nl_cb); 3795 3796 nl80211_destroy_bss(&drv->first_bss); 3797 3798 os_free(drv->filter_ssids); 3799 3800 os_free(drv->auth_ie); 3801 3802 if (drv->in_interface_list) 3803 dl_list_del(&drv->list); 3804 3805 os_free(drv->extended_capa); 3806 os_free(drv->extended_capa_mask); 3807 os_free(drv); 3808} 3809 3810 3811/** 3812 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion 3813 * @eloop_ctx: Driver private data 3814 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init() 3815 * 3816 * This function can be used as registered timeout when starting a scan to 3817 * generate a scan completed event if the driver does not report this. 3818 */ 3819static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx) 3820{ 3821 struct wpa_driver_nl80211_data *drv = eloop_ctx; 3822 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) { 3823 wpa_driver_nl80211_set_mode(&drv->first_bss, 3824 drv->ap_scan_as_station); 3825 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 3826 } 3827 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results"); 3828 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL); 3829} 3830 3831 3832static struct nl_msg * 3833nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd, 3834 struct wpa_driver_scan_params *params) 3835{ 3836 struct nl_msg *msg; 3837 size_t i; 3838 3839 msg = nlmsg_alloc(); 3840 if (!msg) 3841 return NULL; 3842 3843 nl80211_cmd(drv, msg, 0, cmd); 3844 3845 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) < 0) 3846 goto fail; 3847 3848 if (params->num_ssids) { 3849 struct nlattr *ssids; 3850 3851 ssids = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 3852 if (ssids == NULL) 3853 goto fail; 3854 for (i = 0; i < params->num_ssids; i++) { 3855 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID", 3856 params->ssids[i].ssid, 3857 params->ssids[i].ssid_len); 3858 if (nla_put(msg, i + 1, params->ssids[i].ssid_len, 3859 params->ssids[i].ssid) < 0) 3860 goto fail; 3861 } 3862 nla_nest_end(msg, ssids); 3863 } 3864 3865 if (params->extra_ies) { 3866 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs", 3867 params->extra_ies, params->extra_ies_len); 3868 if (nla_put(msg, NL80211_ATTR_IE, params->extra_ies_len, 3869 params->extra_ies) < 0) 3870 goto fail; 3871 } 3872 3873 if (params->freqs) { 3874 struct nlattr *freqs; 3875 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 3876 if (freqs == NULL) 3877 goto fail; 3878 for (i = 0; params->freqs[i]; i++) { 3879 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u " 3880 "MHz", params->freqs[i]); 3881 if (nla_put_u32(msg, i + 1, params->freqs[i]) < 0) 3882 goto fail; 3883 } 3884 nla_nest_end(msg, freqs); 3885 } 3886 3887 os_free(drv->filter_ssids); 3888 drv->filter_ssids = params->filter_ssids; 3889 params->filter_ssids = NULL; 3890 drv->num_filter_ssids = params->num_filter_ssids; 3891 3892 return msg; 3893 3894fail: 3895 nlmsg_free(msg); 3896 return NULL; 3897} 3898 3899 3900/** 3901 * wpa_driver_nl80211_scan - Request the driver to initiate scan 3902 * @bss: Pointer to private driver data from wpa_driver_nl80211_init() 3903 * @params: Scan parameters 3904 * Returns: 0 on success, -1 on failure 3905 */ 3906static int wpa_driver_nl80211_scan(struct i802_bss *bss, 3907 struct wpa_driver_scan_params *params) 3908{ 3909 struct wpa_driver_nl80211_data *drv = bss->drv; 3910 int ret = -1, timeout; 3911 struct nl_msg *msg = NULL; 3912 3913 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: scan request"); 3914 drv->scan_for_auth = 0; 3915 3916 msg = nl80211_scan_common(drv, NL80211_CMD_TRIGGER_SCAN, params); 3917 if (!msg) 3918 return -1; 3919 3920 if (params->p2p_probe) { 3921 struct nlattr *rates; 3922 3923 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates"); 3924 3925 rates = nla_nest_start(msg, NL80211_ATTR_SCAN_SUPP_RATES); 3926 if (rates == NULL) 3927 goto nla_put_failure; 3928 3929 /* 3930 * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates 3931 * by masking out everything else apart from the OFDM rates 6, 3932 * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz 3933 * rates are left enabled. 3934 */ 3935 NLA_PUT(msg, NL80211_BAND_2GHZ, 8, 3936 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 3937 nla_nest_end(msg, rates); 3938 3939 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 3940 } 3941 3942 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3943 msg = NULL; 3944 if (ret) { 3945 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d " 3946 "(%s)", ret, strerror(-ret)); 3947#ifdef HOSTAPD 3948 if (is_ap_interface(drv->nlmode)) { 3949 /* 3950 * mac80211 does not allow scan requests in AP mode, so 3951 * try to do this in station mode. 3952 */ 3953 if (wpa_driver_nl80211_set_mode( 3954 bss, NL80211_IFTYPE_STATION)) 3955 goto nla_put_failure; 3956 3957 if (wpa_driver_nl80211_scan(bss, params)) { 3958 wpa_driver_nl80211_set_mode(bss, drv->nlmode); 3959 goto nla_put_failure; 3960 } 3961 3962 /* Restore AP mode when processing scan results */ 3963 drv->ap_scan_as_station = drv->nlmode; 3964 ret = 0; 3965 } else 3966 goto nla_put_failure; 3967#else /* HOSTAPD */ 3968 goto nla_put_failure; 3969#endif /* HOSTAPD */ 3970 } 3971 3972 /* Not all drivers generate "scan completed" wireless event, so try to 3973 * read results after a timeout. */ 3974 timeout = 10; 3975 if (drv->scan_complete_events) { 3976 /* 3977 * The driver seems to deliver events to notify when scan is 3978 * complete, so use longer timeout to avoid race conditions 3979 * with scanning and following association request. 3980 */ 3981 timeout = 30; 3982 } 3983 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d " 3984 "seconds", ret, timeout); 3985 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 3986 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout, 3987 drv, drv->ctx); 3988 3989nla_put_failure: 3990 nlmsg_free(msg); 3991 return ret; 3992} 3993 3994 3995/** 3996 * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan 3997 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 3998 * @params: Scan parameters 3999 * @interval: Interval between scan cycles in milliseconds 4000 * Returns: 0 on success, -1 on failure or if not supported 4001 */ 4002static int wpa_driver_nl80211_sched_scan(void *priv, 4003 struct wpa_driver_scan_params *params, 4004 u32 interval) 4005{ 4006 struct i802_bss *bss = priv; 4007 struct wpa_driver_nl80211_data *drv = bss->drv; 4008 int ret = -1; 4009 struct nl_msg *msg; 4010 size_t i; 4011 4012 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: sched_scan request"); 4013 4014#ifdef ANDROID 4015 if (!drv->capa.sched_scan_supported) 4016 return android_pno_start(bss, params); 4017#endif /* ANDROID */ 4018 4019 msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params); 4020 if (!msg) 4021 goto nla_put_failure; 4022 4023 NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval); 4024 4025 if ((drv->num_filter_ssids && 4026 (int) drv->num_filter_ssids <= drv->capa.max_match_sets) || 4027 params->filter_rssi) { 4028 struct nlattr *match_sets; 4029 match_sets = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH); 4030 if (match_sets == NULL) 4031 goto nla_put_failure; 4032 4033 for (i = 0; i < drv->num_filter_ssids; i++) { 4034 struct nlattr *match_set_ssid; 4035 wpa_hexdump_ascii(MSG_MSGDUMP, 4036 "nl80211: Sched scan filter SSID", 4037 drv->filter_ssids[i].ssid, 4038 drv->filter_ssids[i].ssid_len); 4039 4040 match_set_ssid = nla_nest_start(msg, i + 1); 4041 if (match_set_ssid == NULL) 4042 goto nla_put_failure; 4043 NLA_PUT(msg, NL80211_ATTR_SCHED_SCAN_MATCH_SSID, 4044 drv->filter_ssids[i].ssid_len, 4045 drv->filter_ssids[i].ssid); 4046 4047 nla_nest_end(msg, match_set_ssid); 4048 } 4049 4050 if (params->filter_rssi) { 4051 struct nlattr *match_set_rssi; 4052 match_set_rssi = nla_nest_start(msg, 0); 4053 if (match_set_rssi == NULL) 4054 goto nla_put_failure; 4055 NLA_PUT_U32(msg, NL80211_SCHED_SCAN_MATCH_ATTR_RSSI, 4056 params->filter_rssi); 4057 wpa_printf(MSG_MSGDUMP, 4058 "nl80211: Sched scan RSSI filter %d dBm", 4059 params->filter_rssi); 4060 nla_nest_end(msg, match_set_rssi); 4061 } 4062 4063 nla_nest_end(msg, match_sets); 4064 } 4065 4066 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4067 4068 /* TODO: if we get an error here, we should fall back to normal scan */ 4069 4070 msg = NULL; 4071 if (ret) { 4072 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: " 4073 "ret=%d (%s)", ret, strerror(-ret)); 4074 goto nla_put_failure; 4075 } 4076 4077 wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - " 4078 "scan interval %d msec", ret, interval); 4079 4080nla_put_failure: 4081 nlmsg_free(msg); 4082 return ret; 4083} 4084 4085 4086/** 4087 * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan 4088 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 4089 * Returns: 0 on success, -1 on failure or if not supported 4090 */ 4091static int wpa_driver_nl80211_stop_sched_scan(void *priv) 4092{ 4093 struct i802_bss *bss = priv; 4094 struct wpa_driver_nl80211_data *drv = bss->drv; 4095 int ret = 0; 4096 struct nl_msg *msg; 4097 4098#ifdef ANDROID 4099 if (!drv->capa.sched_scan_supported) 4100 return android_pno_stop(bss); 4101#endif /* ANDROID */ 4102 4103 msg = nlmsg_alloc(); 4104 if (!msg) 4105 return -1; 4106 4107 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN); 4108 4109 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4110 4111 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4112 msg = NULL; 4113 if (ret) { 4114 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: " 4115 "ret=%d (%s)", ret, strerror(-ret)); 4116 goto nla_put_failure; 4117 } 4118 4119 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret); 4120 4121nla_put_failure: 4122 nlmsg_free(msg); 4123 return ret; 4124} 4125 4126 4127static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie) 4128{ 4129 const u8 *end, *pos; 4130 4131 if (ies == NULL) 4132 return NULL; 4133 4134 pos = ies; 4135 end = ies + ies_len; 4136 4137 while (pos + 1 < end) { 4138 if (pos + 2 + pos[1] > end) 4139 break; 4140 if (pos[0] == ie) 4141 return pos; 4142 pos += 2 + pos[1]; 4143 } 4144 4145 return NULL; 4146} 4147 4148 4149static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv, 4150 const u8 *ie, size_t ie_len) 4151{ 4152 const u8 *ssid; 4153 size_t i; 4154 4155 if (drv->filter_ssids == NULL) 4156 return 0; 4157 4158 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID); 4159 if (ssid == NULL) 4160 return 1; 4161 4162 for (i = 0; i < drv->num_filter_ssids; i++) { 4163 if (ssid[1] == drv->filter_ssids[i].ssid_len && 4164 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) == 4165 0) 4166 return 0; 4167 } 4168 4169 return 1; 4170} 4171 4172 4173static int bss_info_handler(struct nl_msg *msg, void *arg) 4174{ 4175 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 4176 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 4177 struct nlattr *bss[NL80211_BSS_MAX + 1]; 4178 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { 4179 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC }, 4180 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, 4181 [NL80211_BSS_TSF] = { .type = NLA_U64 }, 4182 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 }, 4183 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 }, 4184 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC }, 4185 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 }, 4186 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 }, 4187 [NL80211_BSS_STATUS] = { .type = NLA_U32 }, 4188 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 }, 4189 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC }, 4190 }; 4191 struct nl80211_bss_info_arg *_arg = arg; 4192 struct wpa_scan_results *res = _arg->res; 4193 struct wpa_scan_res **tmp; 4194 struct wpa_scan_res *r; 4195 const u8 *ie, *beacon_ie; 4196 size_t ie_len, beacon_ie_len; 4197 u8 *pos; 4198 size_t i; 4199 4200 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 4201 genlmsg_attrlen(gnlh, 0), NULL); 4202 if (!tb[NL80211_ATTR_BSS]) 4203 return NL_SKIP; 4204 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS], 4205 bss_policy)) 4206 return NL_SKIP; 4207 if (bss[NL80211_BSS_STATUS]) { 4208 enum nl80211_bss_status status; 4209 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 4210 if (status == NL80211_BSS_STATUS_ASSOCIATED && 4211 bss[NL80211_BSS_FREQUENCY]) { 4212 _arg->assoc_freq = 4213 nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 4214 wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz", 4215 _arg->assoc_freq); 4216 } 4217 if (status == NL80211_BSS_STATUS_ASSOCIATED && 4218 bss[NL80211_BSS_BSSID]) { 4219 os_memcpy(_arg->assoc_bssid, 4220 nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN); 4221 wpa_printf(MSG_DEBUG, "nl80211: Associated with " 4222 MACSTR, MAC2STR(_arg->assoc_bssid)); 4223 } 4224 } 4225 if (!res) 4226 return NL_SKIP; 4227 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) { 4228 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 4229 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 4230 } else { 4231 ie = NULL; 4232 ie_len = 0; 4233 } 4234 if (bss[NL80211_BSS_BEACON_IES]) { 4235 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]); 4236 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]); 4237 } else { 4238 beacon_ie = NULL; 4239 beacon_ie_len = 0; 4240 } 4241 4242 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie, 4243 ie ? ie_len : beacon_ie_len)) 4244 return NL_SKIP; 4245 4246 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len); 4247 if (r == NULL) 4248 return NL_SKIP; 4249 if (bss[NL80211_BSS_BSSID]) 4250 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]), 4251 ETH_ALEN); 4252 if (bss[NL80211_BSS_FREQUENCY]) 4253 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 4254 if (bss[NL80211_BSS_BEACON_INTERVAL]) 4255 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]); 4256 if (bss[NL80211_BSS_CAPABILITY]) 4257 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]); 4258 r->flags |= WPA_SCAN_NOISE_INVALID; 4259 if (bss[NL80211_BSS_SIGNAL_MBM]) { 4260 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]); 4261 r->level /= 100; /* mBm to dBm */ 4262 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID; 4263 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) { 4264 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]); 4265 r->flags |= WPA_SCAN_QUAL_INVALID; 4266 } else 4267 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID; 4268 if (bss[NL80211_BSS_TSF]) 4269 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]); 4270 if (bss[NL80211_BSS_SEEN_MS_AGO]) 4271 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]); 4272 r->ie_len = ie_len; 4273 pos = (u8 *) (r + 1); 4274 if (ie) { 4275 os_memcpy(pos, ie, ie_len); 4276 pos += ie_len; 4277 } 4278 r->beacon_ie_len = beacon_ie_len; 4279 if (beacon_ie) 4280 os_memcpy(pos, beacon_ie, beacon_ie_len); 4281 4282 if (bss[NL80211_BSS_STATUS]) { 4283 enum nl80211_bss_status status; 4284 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 4285 switch (status) { 4286 case NL80211_BSS_STATUS_AUTHENTICATED: 4287 r->flags |= WPA_SCAN_AUTHENTICATED; 4288 break; 4289 case NL80211_BSS_STATUS_ASSOCIATED: 4290 r->flags |= WPA_SCAN_ASSOCIATED; 4291 break; 4292 default: 4293 break; 4294 } 4295 } 4296 4297 /* 4298 * cfg80211 maintains separate BSS table entries for APs if the same 4299 * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does 4300 * not use frequency as a separate key in the BSS table, so filter out 4301 * duplicated entries. Prefer associated BSS entry in such a case in 4302 * order to get the correct frequency into the BSS table. 4303 */ 4304 for (i = 0; i < res->num; i++) { 4305 const u8 *s1, *s2; 4306 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0) 4307 continue; 4308 4309 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1), 4310 res->res[i]->ie_len, WLAN_EID_SSID); 4311 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID); 4312 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] || 4313 os_memcmp(s1, s2, 2 + s1[1]) != 0) 4314 continue; 4315 4316 /* Same BSSID,SSID was already included in scan results */ 4317 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result " 4318 "for " MACSTR, MAC2STR(r->bssid)); 4319 4320 if ((r->flags & WPA_SCAN_ASSOCIATED) && 4321 !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) { 4322 os_free(res->res[i]); 4323 res->res[i] = r; 4324 } else 4325 os_free(r); 4326 return NL_SKIP; 4327 } 4328 4329 tmp = os_realloc_array(res->res, res->num + 1, 4330 sizeof(struct wpa_scan_res *)); 4331 if (tmp == NULL) { 4332 os_free(r); 4333 return NL_SKIP; 4334 } 4335 tmp[res->num++] = r; 4336 res->res = tmp; 4337 4338 return NL_SKIP; 4339} 4340 4341 4342static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv, 4343 const u8 *addr) 4344{ 4345 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 4346 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state " 4347 "mismatch (" MACSTR ")", MAC2STR(addr)); 4348 wpa_driver_nl80211_mlme(drv, addr, 4349 NL80211_CMD_DEAUTHENTICATE, 4350 WLAN_REASON_PREV_AUTH_NOT_VALID, 1); 4351 } 4352} 4353 4354 4355static void wpa_driver_nl80211_check_bss_status( 4356 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res) 4357{ 4358 size_t i; 4359 4360 for (i = 0; i < res->num; i++) { 4361 struct wpa_scan_res *r = res->res[i]; 4362 if (r->flags & WPA_SCAN_AUTHENTICATED) { 4363 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 4364 "indicates BSS status with " MACSTR 4365 " as authenticated", 4366 MAC2STR(r->bssid)); 4367 if (is_sta_interface(drv->nlmode) && 4368 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 && 4369 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) != 4370 0) { 4371 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID" 4372 " in local state (auth=" MACSTR 4373 " assoc=" MACSTR ")", 4374 MAC2STR(drv->auth_bssid), 4375 MAC2STR(drv->bssid)); 4376 clear_state_mismatch(drv, r->bssid); 4377 } 4378 } 4379 4380 if (r->flags & WPA_SCAN_ASSOCIATED) { 4381 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 4382 "indicate BSS status with " MACSTR 4383 " as associated", 4384 MAC2STR(r->bssid)); 4385 if (is_sta_interface(drv->nlmode) && 4386 !drv->associated) { 4387 wpa_printf(MSG_DEBUG, "nl80211: Local state " 4388 "(not associated) does not match " 4389 "with BSS state"); 4390 clear_state_mismatch(drv, r->bssid); 4391 } else if (is_sta_interface(drv->nlmode) && 4392 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) != 4393 0) { 4394 wpa_printf(MSG_DEBUG, "nl80211: Local state " 4395 "(associated with " MACSTR ") does " 4396 "not match with BSS state", 4397 MAC2STR(drv->bssid)); 4398 clear_state_mismatch(drv, r->bssid); 4399 clear_state_mismatch(drv, drv->bssid); 4400 } 4401 } 4402 } 4403} 4404 4405 4406static struct wpa_scan_results * 4407nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv) 4408{ 4409 struct nl_msg *msg; 4410 struct wpa_scan_results *res; 4411 int ret; 4412 struct nl80211_bss_info_arg arg; 4413 4414 res = os_zalloc(sizeof(*res)); 4415 if (res == NULL) 4416 return NULL; 4417 msg = nlmsg_alloc(); 4418 if (!msg) 4419 goto nla_put_failure; 4420 4421 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 4422 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4423 4424 arg.drv = drv; 4425 arg.res = res; 4426 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 4427 msg = NULL; 4428 if (ret == 0) { 4429 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu " 4430 "BSSes)", (unsigned long) res->num); 4431 nl80211_get_noise_for_scan_results(drv, res); 4432 return res; 4433 } 4434 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 4435 "(%s)", ret, strerror(-ret)); 4436nla_put_failure: 4437 nlmsg_free(msg); 4438 wpa_scan_results_free(res); 4439 return NULL; 4440} 4441 4442 4443/** 4444 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results 4445 * @priv: Pointer to private wext data from wpa_driver_nl80211_init() 4446 * Returns: Scan results on success, -1 on failure 4447 */ 4448static struct wpa_scan_results * 4449wpa_driver_nl80211_get_scan_results(void *priv) 4450{ 4451 struct i802_bss *bss = priv; 4452 struct wpa_driver_nl80211_data *drv = bss->drv; 4453 struct wpa_scan_results *res; 4454 4455 res = nl80211_get_scan_results(drv); 4456 if (res) 4457 wpa_driver_nl80211_check_bss_status(drv, res); 4458 return res; 4459} 4460 4461 4462static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv) 4463{ 4464 struct wpa_scan_results *res; 4465 size_t i; 4466 4467 res = nl80211_get_scan_results(drv); 4468 if (res == NULL) { 4469 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results"); 4470 return; 4471 } 4472 4473 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump"); 4474 for (i = 0; i < res->num; i++) { 4475 struct wpa_scan_res *r = res->res[i]; 4476 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s", 4477 (int) i, (int) res->num, MAC2STR(r->bssid), 4478 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "", 4479 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : ""); 4480 } 4481 4482 wpa_scan_results_free(res); 4483} 4484 4485 4486static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss, 4487 enum wpa_alg alg, const u8 *addr, 4488 int key_idx, int set_tx, 4489 const u8 *seq, size_t seq_len, 4490 const u8 *key, size_t key_len) 4491{ 4492 struct wpa_driver_nl80211_data *drv = bss->drv; 4493 int ifindex = if_nametoindex(ifname); 4494 struct nl_msg *msg; 4495 int ret; 4496 4497 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d " 4498 "set_tx=%d seq_len=%lu key_len=%lu", 4499 __func__, ifindex, alg, addr, key_idx, set_tx, 4500 (unsigned long) seq_len, (unsigned long) key_len); 4501#ifdef CONFIG_TDLS 4502 if (key_idx == -1) 4503 key_idx = 0; 4504#endif /* CONFIG_TDLS */ 4505 4506 msg = nlmsg_alloc(); 4507 if (!msg) 4508 return -ENOMEM; 4509 4510 if (alg == WPA_ALG_NONE) { 4511 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY); 4512 } else { 4513 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY); 4514 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key); 4515 switch (alg) { 4516 case WPA_ALG_WEP: 4517 if (key_len == 5) 4518 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4519 WLAN_CIPHER_SUITE_WEP40); 4520 else 4521 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4522 WLAN_CIPHER_SUITE_WEP104); 4523 break; 4524 case WPA_ALG_TKIP: 4525 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4526 WLAN_CIPHER_SUITE_TKIP); 4527 break; 4528 case WPA_ALG_CCMP: 4529 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4530 WLAN_CIPHER_SUITE_CCMP); 4531 break; 4532 case WPA_ALG_GCMP: 4533 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4534 WLAN_CIPHER_SUITE_GCMP); 4535 break; 4536 case WPA_ALG_IGTK: 4537 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4538 WLAN_CIPHER_SUITE_AES_CMAC); 4539 break; 4540 case WPA_ALG_SMS4: 4541 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4542 WLAN_CIPHER_SUITE_SMS4); 4543 break; 4544 case WPA_ALG_KRK: 4545 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4546 WLAN_CIPHER_SUITE_KRK); 4547 break; 4548 default: 4549 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 4550 "algorithm %d", __func__, alg); 4551 nlmsg_free(msg); 4552 return -1; 4553 } 4554 } 4555 4556 if (seq && seq_len) 4557 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq); 4558 4559 if (addr && !is_broadcast_ether_addr(addr)) { 4560 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr)); 4561 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 4562 4563 if (alg != WPA_ALG_WEP && key_idx && !set_tx) { 4564 wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK"); 4565 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, 4566 NL80211_KEYTYPE_GROUP); 4567 } 4568 } else if (addr && is_broadcast_ether_addr(addr)) { 4569 struct nlattr *types; 4570 4571 wpa_printf(MSG_DEBUG, " broadcast key"); 4572 4573 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES); 4574 if (!types) 4575 goto nla_put_failure; 4576 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 4577 nla_nest_end(msg, types); 4578 } 4579 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 4580 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 4581 4582 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4583 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE) 4584 ret = 0; 4585 if (ret) 4586 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)", 4587 ret, strerror(-ret)); 4588 4589 /* 4590 * If we failed or don't need to set the default TX key (below), 4591 * we're done here. 4592 */ 4593 if (ret || !set_tx || alg == WPA_ALG_NONE) 4594 return ret; 4595 if (is_ap_interface(drv->nlmode) && addr && 4596 !is_broadcast_ether_addr(addr)) 4597 return ret; 4598 4599 msg = nlmsg_alloc(); 4600 if (!msg) 4601 return -ENOMEM; 4602 4603 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY); 4604 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 4605 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 4606 if (alg == WPA_ALG_IGTK) 4607 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT); 4608 else 4609 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT); 4610 if (addr && is_broadcast_ether_addr(addr)) { 4611 struct nlattr *types; 4612 4613 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES); 4614 if (!types) 4615 goto nla_put_failure; 4616 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 4617 nla_nest_end(msg, types); 4618 } else if (addr) { 4619 struct nlattr *types; 4620 4621 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES); 4622 if (!types) 4623 goto nla_put_failure; 4624 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST); 4625 nla_nest_end(msg, types); 4626 } 4627 4628 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4629 if (ret == -ENOENT) 4630 ret = 0; 4631 if (ret) 4632 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; " 4633 "err=%d %s)", ret, strerror(-ret)); 4634 return ret; 4635 4636nla_put_failure: 4637 nlmsg_free(msg); 4638 return -ENOBUFS; 4639} 4640 4641 4642static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg, 4643 int key_idx, int defkey, 4644 const u8 *seq, size_t seq_len, 4645 const u8 *key, size_t key_len) 4646{ 4647 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY); 4648 if (!key_attr) 4649 return -1; 4650 4651 if (defkey && alg == WPA_ALG_IGTK) 4652 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT); 4653 else if (defkey) 4654 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 4655 4656 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx); 4657 4658 switch (alg) { 4659 case WPA_ALG_WEP: 4660 if (key_len == 5) 4661 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4662 WLAN_CIPHER_SUITE_WEP40); 4663 else 4664 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4665 WLAN_CIPHER_SUITE_WEP104); 4666 break; 4667 case WPA_ALG_TKIP: 4668 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP); 4669 break; 4670 case WPA_ALG_CCMP: 4671 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP); 4672 break; 4673 case WPA_ALG_GCMP: 4674 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_GCMP); 4675 break; 4676 case WPA_ALG_IGTK: 4677 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4678 WLAN_CIPHER_SUITE_AES_CMAC); 4679 break; 4680 default: 4681 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 4682 "algorithm %d", __func__, alg); 4683 return -1; 4684 } 4685 4686 if (seq && seq_len) 4687 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq); 4688 4689 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key); 4690 4691 nla_nest_end(msg, key_attr); 4692 4693 return 0; 4694 nla_put_failure: 4695 return -1; 4696} 4697 4698 4699static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params, 4700 struct nl_msg *msg) 4701{ 4702 int i, privacy = 0; 4703 struct nlattr *nl_keys, *nl_key; 4704 4705 for (i = 0; i < 4; i++) { 4706 if (!params->wep_key[i]) 4707 continue; 4708 privacy = 1; 4709 break; 4710 } 4711 if (params->wps == WPS_MODE_PRIVACY) 4712 privacy = 1; 4713 if (params->pairwise_suite && 4714 params->pairwise_suite != WPA_CIPHER_NONE) 4715 privacy = 1; 4716 4717 if (!privacy) 4718 return 0; 4719 4720 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 4721 4722 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS); 4723 if (!nl_keys) 4724 goto nla_put_failure; 4725 4726 for (i = 0; i < 4; i++) { 4727 if (!params->wep_key[i]) 4728 continue; 4729 4730 nl_key = nla_nest_start(msg, i); 4731 if (!nl_key) 4732 goto nla_put_failure; 4733 4734 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i], 4735 params->wep_key[i]); 4736 if (params->wep_key_len[i] == 5) 4737 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4738 WLAN_CIPHER_SUITE_WEP40); 4739 else 4740 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4741 WLAN_CIPHER_SUITE_WEP104); 4742 4743 NLA_PUT_U8(msg, NL80211_KEY_IDX, i); 4744 4745 if (i == params->wep_tx_keyidx) 4746 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 4747 4748 nla_nest_end(msg, nl_key); 4749 } 4750 nla_nest_end(msg, nl_keys); 4751 4752 return 0; 4753 4754nla_put_failure: 4755 return -ENOBUFS; 4756} 4757 4758 4759static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 4760 const u8 *addr, int cmd, u16 reason_code, 4761 int local_state_change) 4762{ 4763 int ret = -1; 4764 struct nl_msg *msg; 4765 4766 msg = nlmsg_alloc(); 4767 if (!msg) 4768 return -1; 4769 4770 nl80211_cmd(drv, msg, 0, cmd); 4771 4772 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4773 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code); 4774 if (addr) 4775 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 4776 if (local_state_change) 4777 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 4778 4779 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4780 msg = NULL; 4781 if (ret) { 4782 wpa_dbg(drv->ctx, MSG_DEBUG, 4783 "nl80211: MLME command failed: reason=%u ret=%d (%s)", 4784 reason_code, ret, strerror(-ret)); 4785 goto nla_put_failure; 4786 } 4787 ret = 0; 4788 4789nla_put_failure: 4790 nlmsg_free(msg); 4791 return ret; 4792} 4793 4794 4795static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv, 4796 int reason_code) 4797{ 4798 wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code); 4799 drv->associated = 0; 4800 drv->ignore_next_local_disconnect = 0; 4801 /* Disconnect command doesn't need BSSID - it uses cached value */ 4802 return wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT, 4803 reason_code, 0); 4804} 4805 4806 4807static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss, 4808 const u8 *addr, int reason_code) 4809{ 4810 struct wpa_driver_nl80211_data *drv = bss->drv; 4811 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) 4812 return wpa_driver_nl80211_disconnect(drv, reason_code); 4813 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)", 4814 __func__, MAC2STR(addr), reason_code); 4815 drv->associated = 0; 4816 if (drv->nlmode == NL80211_IFTYPE_ADHOC) 4817 return nl80211_leave_ibss(drv); 4818 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE, 4819 reason_code, 0); 4820} 4821 4822 4823static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv, 4824 struct wpa_driver_auth_params *params) 4825{ 4826 int i; 4827 4828 drv->auth_freq = params->freq; 4829 drv->auth_alg = params->auth_alg; 4830 drv->auth_wep_tx_keyidx = params->wep_tx_keyidx; 4831 drv->auth_local_state_change = params->local_state_change; 4832 drv->auth_p2p = params->p2p; 4833 4834 if (params->bssid) 4835 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN); 4836 else 4837 os_memset(drv->auth_bssid_, 0, ETH_ALEN); 4838 4839 if (params->ssid) { 4840 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len); 4841 drv->auth_ssid_len = params->ssid_len; 4842 } else 4843 drv->auth_ssid_len = 0; 4844 4845 4846 os_free(drv->auth_ie); 4847 drv->auth_ie = NULL; 4848 drv->auth_ie_len = 0; 4849 if (params->ie) { 4850 drv->auth_ie = os_malloc(params->ie_len); 4851 if (drv->auth_ie) { 4852 os_memcpy(drv->auth_ie, params->ie, params->ie_len); 4853 drv->auth_ie_len = params->ie_len; 4854 } 4855 } 4856 4857 for (i = 0; i < 4; i++) { 4858 if (params->wep_key[i] && params->wep_key_len[i] && 4859 params->wep_key_len[i] <= 16) { 4860 os_memcpy(drv->auth_wep_key[i], params->wep_key[i], 4861 params->wep_key_len[i]); 4862 drv->auth_wep_key_len[i] = params->wep_key_len[i]; 4863 } else 4864 drv->auth_wep_key_len[i] = 0; 4865 } 4866} 4867 4868 4869static int wpa_driver_nl80211_authenticate( 4870 struct i802_bss *bss, struct wpa_driver_auth_params *params) 4871{ 4872 struct wpa_driver_nl80211_data *drv = bss->drv; 4873 int ret = -1, i; 4874 struct nl_msg *msg; 4875 enum nl80211_auth_type type; 4876 enum nl80211_iftype nlmode; 4877 int count = 0; 4878 int is_retry; 4879 4880 is_retry = drv->retry_auth; 4881 drv->retry_auth = 0; 4882 4883 drv->associated = 0; 4884 os_memset(drv->auth_bssid, 0, ETH_ALEN); 4885 /* FIX: IBSS mode */ 4886 nlmode = params->p2p ? 4887 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 4888 if (drv->nlmode != nlmode && 4889 wpa_driver_nl80211_set_mode(bss, nlmode) < 0) 4890 return -1; 4891 4892retry: 4893 msg = nlmsg_alloc(); 4894 if (!msg) 4895 return -1; 4896 4897 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)", 4898 drv->ifindex); 4899 4900 nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE); 4901 4902 for (i = 0; i < 4; i++) { 4903 if (!params->wep_key[i]) 4904 continue; 4905 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP, 4906 NULL, i, 4907 i == params->wep_tx_keyidx, NULL, 0, 4908 params->wep_key[i], 4909 params->wep_key_len[i]); 4910 if (params->wep_tx_keyidx != i) 4911 continue; 4912 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0, 4913 params->wep_key[i], params->wep_key_len[i])) { 4914 nlmsg_free(msg); 4915 return -1; 4916 } 4917 } 4918 4919 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4920 if (params->bssid) { 4921 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 4922 MAC2STR(params->bssid)); 4923 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 4924 } 4925 if (params->freq) { 4926 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 4927 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 4928 } 4929 if (params->ssid) { 4930 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 4931 params->ssid, params->ssid_len); 4932 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 4933 params->ssid); 4934 } 4935 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len); 4936 if (params->ie) 4937 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie); 4938 if (params->sae_data) { 4939 wpa_hexdump(MSG_DEBUG, " * SAE data", params->sae_data, 4940 params->sae_data_len); 4941 NLA_PUT(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len, 4942 params->sae_data); 4943 } 4944 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 4945 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 4946 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 4947 type = NL80211_AUTHTYPE_SHARED_KEY; 4948 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 4949 type = NL80211_AUTHTYPE_NETWORK_EAP; 4950 else if (params->auth_alg & WPA_AUTH_ALG_FT) 4951 type = NL80211_AUTHTYPE_FT; 4952 else if (params->auth_alg & WPA_AUTH_ALG_SAE) 4953 type = NL80211_AUTHTYPE_SAE; 4954 else 4955 goto nla_put_failure; 4956 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 4957 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 4958 if (params->local_state_change) { 4959 wpa_printf(MSG_DEBUG, " * Local state change only"); 4960 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 4961 } 4962 4963 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4964 msg = NULL; 4965 if (ret) { 4966 wpa_dbg(drv->ctx, MSG_DEBUG, 4967 "nl80211: MLME command failed (auth): ret=%d (%s)", 4968 ret, strerror(-ret)); 4969 count++; 4970 if (ret == -EALREADY && count == 1 && params->bssid && 4971 !params->local_state_change) { 4972 /* 4973 * mac80211 does not currently accept new 4974 * authentication if we are already authenticated. As a 4975 * workaround, force deauthentication and try again. 4976 */ 4977 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication " 4978 "after forced deauthentication"); 4979 wpa_driver_nl80211_deauthenticate( 4980 bss, params->bssid, 4981 WLAN_REASON_PREV_AUTH_NOT_VALID); 4982 nlmsg_free(msg); 4983 goto retry; 4984 } 4985 4986 if (ret == -ENOENT && params->freq && !is_retry) { 4987 /* 4988 * cfg80211 has likely expired the BSS entry even 4989 * though it was previously available in our internal 4990 * BSS table. To recover quickly, start a single 4991 * channel scan on the specified channel. 4992 */ 4993 struct wpa_driver_scan_params scan; 4994 int freqs[2]; 4995 4996 os_memset(&scan, 0, sizeof(scan)); 4997 scan.num_ssids = 1; 4998 if (params->ssid) { 4999 scan.ssids[0].ssid = params->ssid; 5000 scan.ssids[0].ssid_len = params->ssid_len; 5001 } 5002 freqs[0] = params->freq; 5003 freqs[1] = 0; 5004 scan.freqs = freqs; 5005 wpa_printf(MSG_DEBUG, "nl80211: Trigger single " 5006 "channel scan to refresh cfg80211 BSS " 5007 "entry"); 5008 ret = wpa_driver_nl80211_scan(bss, &scan); 5009 if (ret == 0) { 5010 nl80211_copy_auth_params(drv, params); 5011 drv->scan_for_auth = 1; 5012 } 5013 } else if (is_retry) { 5014 /* 5015 * Need to indicate this with an event since the return 5016 * value from the retry is not delivered to core code. 5017 */ 5018 union wpa_event_data event; 5019 wpa_printf(MSG_DEBUG, "nl80211: Authentication retry " 5020 "failed"); 5021 os_memset(&event, 0, sizeof(event)); 5022 os_memcpy(event.timeout_event.addr, drv->auth_bssid_, 5023 ETH_ALEN); 5024 wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT, 5025 &event); 5026 } 5027 5028 goto nla_put_failure; 5029 } 5030 ret = 0; 5031 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send " 5032 "successfully"); 5033 5034nla_put_failure: 5035 nlmsg_free(msg); 5036 return ret; 5037} 5038 5039 5040static int wpa_driver_nl80211_authenticate_retry( 5041 struct wpa_driver_nl80211_data *drv) 5042{ 5043 struct wpa_driver_auth_params params; 5044 struct i802_bss *bss = &drv->first_bss; 5045 int i; 5046 5047 wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again"); 5048 5049 os_memset(¶ms, 0, sizeof(params)); 5050 params.freq = drv->auth_freq; 5051 params.auth_alg = drv->auth_alg; 5052 params.wep_tx_keyidx = drv->auth_wep_tx_keyidx; 5053 params.local_state_change = drv->auth_local_state_change; 5054 params.p2p = drv->auth_p2p; 5055 5056 if (!is_zero_ether_addr(drv->auth_bssid_)) 5057 params.bssid = drv->auth_bssid_; 5058 5059 if (drv->auth_ssid_len) { 5060 params.ssid = drv->auth_ssid; 5061 params.ssid_len = drv->auth_ssid_len; 5062 } 5063 5064 params.ie = drv->auth_ie; 5065 params.ie_len = drv->auth_ie_len; 5066 5067 for (i = 0; i < 4; i++) { 5068 if (drv->auth_wep_key_len[i]) { 5069 params.wep_key[i] = drv->auth_wep_key[i]; 5070 params.wep_key_len[i] = drv->auth_wep_key_len[i]; 5071 } 5072 } 5073 5074 drv->retry_auth = 1; 5075 return wpa_driver_nl80211_authenticate(bss, ¶ms); 5076} 5077 5078 5079struct phy_info_arg { 5080 u16 *num_modes; 5081 struct hostapd_hw_modes *modes; 5082 int last_mode, last_chan_idx; 5083}; 5084 5085static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa, 5086 struct nlattr *ampdu_factor, 5087 struct nlattr *ampdu_density, 5088 struct nlattr *mcs_set) 5089{ 5090 if (capa) 5091 mode->ht_capab = nla_get_u16(capa); 5092 5093 if (ampdu_factor) 5094 mode->a_mpdu_params |= nla_get_u8(ampdu_factor) & 0x03; 5095 5096 if (ampdu_density) 5097 mode->a_mpdu_params |= nla_get_u8(ampdu_density) << 2; 5098 5099 if (mcs_set && nla_len(mcs_set) >= 16) { 5100 u8 *mcs; 5101 mcs = nla_data(mcs_set); 5102 os_memcpy(mode->mcs_set, mcs, 16); 5103 } 5104} 5105 5106 5107static void phy_info_vht_capa(struct hostapd_hw_modes *mode, 5108 struct nlattr *capa, 5109 struct nlattr *mcs_set) 5110{ 5111 if (capa) 5112 mode->vht_capab = nla_get_u32(capa); 5113 5114 if (mcs_set && nla_len(mcs_set) >= 8) { 5115 u8 *mcs; 5116 mcs = nla_data(mcs_set); 5117 os_memcpy(mode->vht_mcs_set, mcs, 8); 5118 } 5119} 5120 5121 5122static void phy_info_freq(struct hostapd_hw_modes *mode, 5123 struct hostapd_channel_data *chan, 5124 struct nlattr *tb_freq[]) 5125{ 5126 u8 channel; 5127 chan->freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]); 5128 chan->flag = 0; 5129 if (ieee80211_freq_to_chan(chan->freq, &channel) != NUM_HOSTAPD_MODES) 5130 chan->chan = channel; 5131 5132 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 5133 chan->flag |= HOSTAPD_CHAN_DISABLED; 5134 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN]) 5135 chan->flag |= HOSTAPD_CHAN_PASSIVE_SCAN; 5136 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS]) 5137 chan->flag |= HOSTAPD_CHAN_NO_IBSS; 5138 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR]) 5139 chan->flag |= HOSTAPD_CHAN_RADAR; 5140 5141 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] && 5142 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 5143 chan->max_tx_power = nla_get_u32( 5144 tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100; 5145} 5146 5147 5148static int phy_info_freqs(struct phy_info_arg *phy_info, 5149 struct hostapd_hw_modes *mode, struct nlattr *tb) 5150{ 5151 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 5152 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, 5153 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, 5154 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG }, 5155 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG }, 5156 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, 5157 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 }, 5158 }; 5159 int new_channels = 0; 5160 struct hostapd_channel_data *channel; 5161 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1]; 5162 struct nlattr *nl_freq; 5163 int rem_freq, idx; 5164 5165 if (tb == NULL) 5166 return NL_OK; 5167 5168 nla_for_each_nested(nl_freq, tb, rem_freq) { 5169 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, 5170 nla_data(nl_freq), nla_len(nl_freq), freq_policy); 5171 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 5172 continue; 5173 new_channels++; 5174 } 5175 5176 channel = os_realloc_array(mode->channels, 5177 mode->num_channels + new_channels, 5178 sizeof(struct hostapd_channel_data)); 5179 if (!channel) 5180 return NL_SKIP; 5181 5182 mode->channels = channel; 5183 mode->num_channels += new_channels; 5184 5185 idx = phy_info->last_chan_idx; 5186 5187 nla_for_each_nested(nl_freq, tb, rem_freq) { 5188 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, 5189 nla_data(nl_freq), nla_len(nl_freq), freq_policy); 5190 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 5191 continue; 5192 phy_info_freq(mode, &mode->channels[idx], tb_freq); 5193 idx++; 5194 } 5195 phy_info->last_chan_idx = idx; 5196 5197 return NL_OK; 5198} 5199 5200 5201static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb) 5202{ 5203 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = { 5204 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 }, 5205 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = 5206 { .type = NLA_FLAG }, 5207 }; 5208 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1]; 5209 struct nlattr *nl_rate; 5210 int rem_rate, idx; 5211 5212 if (tb == NULL) 5213 return NL_OK; 5214 5215 nla_for_each_nested(nl_rate, tb, rem_rate) { 5216 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, 5217 nla_data(nl_rate), nla_len(nl_rate), 5218 rate_policy); 5219 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 5220 continue; 5221 mode->num_rates++; 5222 } 5223 5224 mode->rates = os_calloc(mode->num_rates, sizeof(int)); 5225 if (!mode->rates) 5226 return NL_SKIP; 5227 5228 idx = 0; 5229 5230 nla_for_each_nested(nl_rate, tb, rem_rate) { 5231 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, 5232 nla_data(nl_rate), nla_len(nl_rate), 5233 rate_policy); 5234 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 5235 continue; 5236 mode->rates[idx] = nla_get_u32( 5237 tb_rate[NL80211_BITRATE_ATTR_RATE]); 5238 idx++; 5239 } 5240 5241 return NL_OK; 5242} 5243 5244 5245static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band) 5246{ 5247 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1]; 5248 struct hostapd_hw_modes *mode; 5249 int ret; 5250 5251 if (phy_info->last_mode != nl_band->nla_type) { 5252 mode = os_realloc_array(phy_info->modes, 5253 *phy_info->num_modes + 1, 5254 sizeof(*mode)); 5255 if (!mode) 5256 return NL_SKIP; 5257 phy_info->modes = mode; 5258 5259 mode = &phy_info->modes[*(phy_info->num_modes)]; 5260 os_memset(mode, 0, sizeof(*mode)); 5261 mode->mode = NUM_HOSTAPD_MODES; 5262 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN; 5263 *(phy_info->num_modes) += 1; 5264 phy_info->last_mode = nl_band->nla_type; 5265 phy_info->last_chan_idx = 0; 5266 } else 5267 mode = &phy_info->modes[*(phy_info->num_modes) - 1]; 5268 5269 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band), 5270 nla_len(nl_band), NULL); 5271 5272 phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA], 5273 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR], 5274 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY], 5275 tb_band[NL80211_BAND_ATTR_HT_MCS_SET]); 5276 phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA], 5277 tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]); 5278 ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]); 5279 if (ret != NL_OK) 5280 return ret; 5281 ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]); 5282 if (ret != NL_OK) 5283 return ret; 5284 5285 return NL_OK; 5286} 5287 5288 5289static int phy_info_handler(struct nl_msg *msg, void *arg) 5290{ 5291 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 5292 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 5293 struct phy_info_arg *phy_info = arg; 5294 struct nlattr *nl_band; 5295 int rem_band; 5296 5297 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5298 genlmsg_attrlen(gnlh, 0), NULL); 5299 5300 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS]) 5301 return NL_SKIP; 5302 5303 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) 5304 { 5305 int res = phy_info_band(phy_info, nl_band); 5306 if (res != NL_OK) 5307 return res; 5308 } 5309 5310 return NL_SKIP; 5311} 5312 5313 5314static struct hostapd_hw_modes * 5315wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes *modes, 5316 u16 *num_modes) 5317{ 5318 u16 m; 5319 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode; 5320 int i, mode11g_idx = -1; 5321 5322 /* heuristic to set up modes */ 5323 for (m = 0; m < *num_modes; m++) { 5324 if (!modes[m].num_channels) 5325 continue; 5326 if (modes[m].channels[0].freq < 4000) { 5327 modes[m].mode = HOSTAPD_MODE_IEEE80211B; 5328 for (i = 0; i < modes[m].num_rates; i++) { 5329 if (modes[m].rates[i] > 200) { 5330 modes[m].mode = HOSTAPD_MODE_IEEE80211G; 5331 break; 5332 } 5333 } 5334 } else if (modes[m].channels[0].freq > 50000) 5335 modes[m].mode = HOSTAPD_MODE_IEEE80211AD; 5336 else 5337 modes[m].mode = HOSTAPD_MODE_IEEE80211A; 5338 } 5339 5340 /* If only 802.11g mode is included, use it to construct matching 5341 * 802.11b mode data. */ 5342 5343 for (m = 0; m < *num_modes; m++) { 5344 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B) 5345 return modes; /* 802.11b already included */ 5346 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G) 5347 mode11g_idx = m; 5348 } 5349 5350 if (mode11g_idx < 0) 5351 return modes; /* 2.4 GHz band not supported at all */ 5352 5353 nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes)); 5354 if (nmodes == NULL) 5355 return modes; /* Could not add 802.11b mode */ 5356 5357 mode = &nmodes[*num_modes]; 5358 os_memset(mode, 0, sizeof(*mode)); 5359 (*num_modes)++; 5360 modes = nmodes; 5361 5362 mode->mode = HOSTAPD_MODE_IEEE80211B; 5363 5364 mode11g = &modes[mode11g_idx]; 5365 mode->num_channels = mode11g->num_channels; 5366 mode->channels = os_malloc(mode11g->num_channels * 5367 sizeof(struct hostapd_channel_data)); 5368 if (mode->channels == NULL) { 5369 (*num_modes)--; 5370 return modes; /* Could not add 802.11b mode */ 5371 } 5372 os_memcpy(mode->channels, mode11g->channels, 5373 mode11g->num_channels * sizeof(struct hostapd_channel_data)); 5374 5375 mode->num_rates = 0; 5376 mode->rates = os_malloc(4 * sizeof(int)); 5377 if (mode->rates == NULL) { 5378 os_free(mode->channels); 5379 (*num_modes)--; 5380 return modes; /* Could not add 802.11b mode */ 5381 } 5382 5383 for (i = 0; i < mode11g->num_rates; i++) { 5384 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 && 5385 mode11g->rates[i] != 55 && mode11g->rates[i] != 110) 5386 continue; 5387 mode->rates[mode->num_rates] = mode11g->rates[i]; 5388 mode->num_rates++; 5389 if (mode->num_rates == 4) 5390 break; 5391 } 5392 5393 if (mode->num_rates == 0) { 5394 os_free(mode->channels); 5395 os_free(mode->rates); 5396 (*num_modes)--; 5397 return modes; /* No 802.11b rates */ 5398 } 5399 5400 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g " 5401 "information"); 5402 5403 return modes; 5404} 5405 5406 5407static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start, 5408 int end) 5409{ 5410 int c; 5411 5412 for (c = 0; c < mode->num_channels; c++) { 5413 struct hostapd_channel_data *chan = &mode->channels[c]; 5414 if (chan->freq - 10 >= start && chan->freq + 10 <= end) 5415 chan->flag |= HOSTAPD_CHAN_HT40; 5416 } 5417} 5418 5419 5420static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start, 5421 int end) 5422{ 5423 int c; 5424 5425 for (c = 0; c < mode->num_channels; c++) { 5426 struct hostapd_channel_data *chan = &mode->channels[c]; 5427 if (!(chan->flag & HOSTAPD_CHAN_HT40)) 5428 continue; 5429 if (chan->freq - 30 >= start && chan->freq - 10 <= end) 5430 chan->flag |= HOSTAPD_CHAN_HT40MINUS; 5431 if (chan->freq + 10 >= start && chan->freq + 30 <= end) 5432 chan->flag |= HOSTAPD_CHAN_HT40PLUS; 5433 } 5434} 5435 5436 5437static void nl80211_reg_rule_ht40(struct nlattr *tb[], 5438 struct phy_info_arg *results) 5439{ 5440 u32 start, end, max_bw; 5441 u16 m; 5442 5443 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 5444 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 5445 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 5446 return; 5447 5448 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 5449 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 5450 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 5451 5452 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz", 5453 start, end, max_bw); 5454 if (max_bw < 40) 5455 return; 5456 5457 for (m = 0; m < *results->num_modes; m++) { 5458 if (!(results->modes[m].ht_capab & 5459 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 5460 continue; 5461 nl80211_set_ht40_mode(&results->modes[m], start, end); 5462 } 5463} 5464 5465 5466static void nl80211_reg_rule_sec(struct nlattr *tb[], 5467 struct phy_info_arg *results) 5468{ 5469 u32 start, end, max_bw; 5470 u16 m; 5471 5472 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 5473 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 5474 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 5475 return; 5476 5477 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 5478 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 5479 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 5480 5481 if (max_bw < 20) 5482 return; 5483 5484 for (m = 0; m < *results->num_modes; m++) { 5485 if (!(results->modes[m].ht_capab & 5486 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 5487 continue; 5488 nl80211_set_ht40_mode_sec(&results->modes[m], start, end); 5489 } 5490} 5491 5492 5493static int nl80211_get_reg(struct nl_msg *msg, void *arg) 5494{ 5495 struct phy_info_arg *results = arg; 5496 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 5497 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 5498 struct nlattr *nl_rule; 5499 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1]; 5500 int rem_rule; 5501 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 5502 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 5503 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 5504 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 5505 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 5506 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 5507 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 5508 }; 5509 5510 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5511 genlmsg_attrlen(gnlh, 0), NULL); 5512 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] || 5513 !tb_msg[NL80211_ATTR_REG_RULES]) { 5514 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information " 5515 "available"); 5516 return NL_SKIP; 5517 } 5518 5519 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s", 5520 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2])); 5521 5522 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 5523 { 5524 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 5525 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 5526 nl80211_reg_rule_ht40(tb_rule, results); 5527 } 5528 5529 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 5530 { 5531 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 5532 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 5533 nl80211_reg_rule_sec(tb_rule, results); 5534 } 5535 5536 return NL_SKIP; 5537} 5538 5539 5540static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv, 5541 struct phy_info_arg *results) 5542{ 5543 struct nl_msg *msg; 5544 5545 msg = nlmsg_alloc(); 5546 if (!msg) 5547 return -ENOMEM; 5548 5549 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG); 5550 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results); 5551} 5552 5553 5554static struct hostapd_hw_modes * 5555wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags) 5556{ 5557 u32 feat; 5558 struct i802_bss *bss = priv; 5559 struct wpa_driver_nl80211_data *drv = bss->drv; 5560 struct nl_msg *msg; 5561 struct phy_info_arg result = { 5562 .num_modes = num_modes, 5563 .modes = NULL, 5564 .last_mode = -1, 5565 }; 5566 5567 *num_modes = 0; 5568 *flags = 0; 5569 5570 msg = nlmsg_alloc(); 5571 if (!msg) 5572 return NULL; 5573 5574 feat = get_nl80211_protocol_features(drv); 5575 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) 5576 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_WIPHY); 5577 else 5578 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 5579 5580 NLA_PUT_FLAG(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP); 5581 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5582 5583 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) { 5584 nl80211_set_ht40_flags(drv, &result); 5585 return wpa_driver_nl80211_postprocess_modes(result.modes, 5586 num_modes); 5587 } 5588 msg = NULL; 5589 nla_put_failure: 5590 nlmsg_free(msg); 5591 return NULL; 5592} 5593 5594 5595static int wpa_driver_nl80211_send_mntr(struct wpa_driver_nl80211_data *drv, 5596 const void *data, size_t len, 5597 int encrypt, int noack) 5598{ 5599 __u8 rtap_hdr[] = { 5600 0x00, 0x00, /* radiotap version */ 5601 0x0e, 0x00, /* radiotap length */ 5602 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */ 5603 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */ 5604 0x00, /* padding */ 5605 0x00, 0x00, /* RX and TX flags to indicate that */ 5606 0x00, 0x00, /* this is the injected frame directly */ 5607 }; 5608 struct iovec iov[2] = { 5609 { 5610 .iov_base = &rtap_hdr, 5611 .iov_len = sizeof(rtap_hdr), 5612 }, 5613 { 5614 .iov_base = (void *) data, 5615 .iov_len = len, 5616 } 5617 }; 5618 struct msghdr msg = { 5619 .msg_name = NULL, 5620 .msg_namelen = 0, 5621 .msg_iov = iov, 5622 .msg_iovlen = 2, 5623 .msg_control = NULL, 5624 .msg_controllen = 0, 5625 .msg_flags = 0, 5626 }; 5627 int res; 5628 u16 txflags = 0; 5629 5630 if (encrypt) 5631 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP; 5632 5633 if (drv->monitor_sock < 0) { 5634 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available " 5635 "for %s", __func__); 5636 return -1; 5637 } 5638 5639 if (noack) 5640 txflags |= IEEE80211_RADIOTAP_F_TX_NOACK; 5641 WPA_PUT_LE16(&rtap_hdr[12], txflags); 5642 5643 res = sendmsg(drv->monitor_sock, &msg, 0); 5644 if (res < 0) { 5645 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno)); 5646 return -1; 5647 } 5648 return 0; 5649} 5650 5651 5652static int wpa_driver_nl80211_send_frame(struct i802_bss *bss, 5653 const void *data, size_t len, 5654 int encrypt, int noack, 5655 unsigned int freq, int no_cck, 5656 int offchanok, unsigned int wait_time) 5657{ 5658 struct wpa_driver_nl80211_data *drv = bss->drv; 5659 u64 cookie; 5660 5661 if (freq == 0) 5662 freq = bss->freq; 5663 5664 if (drv->use_monitor) 5665 return wpa_driver_nl80211_send_mntr(drv, data, len, 5666 encrypt, noack); 5667 5668 return nl80211_send_frame_cmd(bss, freq, wait_time, data, len, 5669 &cookie, no_cck, noack, offchanok); 5670} 5671 5672 5673static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data, 5674 size_t data_len, int noack, 5675 unsigned int freq, int no_cck, 5676 int offchanok, 5677 unsigned int wait_time) 5678{ 5679 struct wpa_driver_nl80211_data *drv = bss->drv; 5680 struct ieee80211_mgmt *mgmt; 5681 int encrypt = 1; 5682 u16 fc; 5683 5684 mgmt = (struct ieee80211_mgmt *) data; 5685 fc = le_to_host16(mgmt->frame_control); 5686 5687 if (is_sta_interface(drv->nlmode) && 5688 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 5689 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) { 5690 /* 5691 * The use of last_mgmt_freq is a bit of a hack, 5692 * but it works due to the single-threaded nature 5693 * of wpa_supplicant. 5694 */ 5695 if (freq == 0) 5696 freq = drv->last_mgmt_freq; 5697 return nl80211_send_frame_cmd(bss, freq, 0, 5698 data, data_len, NULL, 1, noack, 5699 1); 5700 } 5701 5702 if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) { 5703 if (freq == 0) 5704 freq = bss->freq; 5705 return nl80211_send_frame_cmd(bss, freq, 5706 (int) freq == bss->freq ? 0 : 5707 wait_time, 5708 data, data_len, 5709 &drv->send_action_cookie, 5710 no_cck, noack, offchanok); 5711 } 5712 5713 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 5714 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) { 5715 /* 5716 * Only one of the authentication frame types is encrypted. 5717 * In order for static WEP encryption to work properly (i.e., 5718 * to not encrypt the frame), we need to tell mac80211 about 5719 * the frames that must not be encrypted. 5720 */ 5721 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg); 5722 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction); 5723 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3) 5724 encrypt = 0; 5725 } 5726 5727 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 5728 noack, freq, no_cck, offchanok, 5729 wait_time); 5730} 5731 5732 5733static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble, 5734 int slot, int ht_opmode, int ap_isolate, 5735 int *basic_rates) 5736{ 5737 struct wpa_driver_nl80211_data *drv = bss->drv; 5738 struct nl_msg *msg; 5739 5740 msg = nlmsg_alloc(); 5741 if (!msg) 5742 return -ENOMEM; 5743 5744 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS); 5745 5746 if (cts >= 0) 5747 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts); 5748 if (preamble >= 0) 5749 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble); 5750 if (slot >= 0) 5751 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot); 5752 if (ht_opmode >= 0) 5753 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode); 5754 if (ap_isolate >= 0) 5755 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate); 5756 5757 if (basic_rates) { 5758 u8 rates[NL80211_MAX_SUPP_RATES]; 5759 u8 rates_len = 0; 5760 int i; 5761 5762 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; 5763 i++) 5764 rates[rates_len++] = basic_rates[i] / 5; 5765 5766 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates); 5767 } 5768 5769 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 5770 5771 return send_and_recv_msgs(drv, msg, NULL, NULL); 5772 nla_put_failure: 5773 nlmsg_free(msg); 5774 return -ENOBUFS; 5775} 5776 5777 5778static int wpa_driver_nl80211_set_ap(void *priv, 5779 struct wpa_driver_ap_params *params) 5780{ 5781 struct i802_bss *bss = priv; 5782 struct wpa_driver_nl80211_data *drv = bss->drv; 5783 struct nl_msg *msg; 5784 u8 cmd = NL80211_CMD_NEW_BEACON; 5785 int ret; 5786 int beacon_set; 5787 int ifindex = if_nametoindex(bss->ifname); 5788 int num_suites; 5789 u32 suites[10]; 5790 u32 ver; 5791 5792 beacon_set = bss->beacon_set; 5793 5794 msg = nlmsg_alloc(); 5795 if (!msg) 5796 return -ENOMEM; 5797 5798 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)", 5799 beacon_set); 5800 if (beacon_set) 5801 cmd = NL80211_CMD_SET_BEACON; 5802 5803 nl80211_cmd(drv, msg, 0, cmd); 5804 wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head", 5805 params->head, params->head_len); 5806 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head); 5807 wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail", 5808 params->tail, params->tail_len); 5809 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail); 5810 wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", ifindex); 5811 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 5812 wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int); 5813 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int); 5814 wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period); 5815 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period); 5816 wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid", 5817 params->ssid, params->ssid_len); 5818 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 5819 params->ssid); 5820 if (params->proberesp && params->proberesp_len) { 5821 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)", 5822 params->proberesp, params->proberesp_len); 5823 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len, 5824 params->proberesp); 5825 } 5826 switch (params->hide_ssid) { 5827 case NO_SSID_HIDING: 5828 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use"); 5829 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5830 NL80211_HIDDEN_SSID_NOT_IN_USE); 5831 break; 5832 case HIDDEN_SSID_ZERO_LEN: 5833 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len"); 5834 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5835 NL80211_HIDDEN_SSID_ZERO_LEN); 5836 break; 5837 case HIDDEN_SSID_ZERO_CONTENTS: 5838 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents"); 5839 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5840 NL80211_HIDDEN_SSID_ZERO_CONTENTS); 5841 break; 5842 } 5843 wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy); 5844 if (params->privacy) 5845 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 5846 wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs); 5847 if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) == 5848 (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) { 5849 /* Leave out the attribute */ 5850 } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) 5851 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 5852 NL80211_AUTHTYPE_SHARED_KEY); 5853 else 5854 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 5855 NL80211_AUTHTYPE_OPEN_SYSTEM); 5856 5857 wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version); 5858 ver = 0; 5859 if (params->wpa_version & WPA_PROTO_WPA) 5860 ver |= NL80211_WPA_VERSION_1; 5861 if (params->wpa_version & WPA_PROTO_RSN) 5862 ver |= NL80211_WPA_VERSION_2; 5863 if (ver) 5864 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 5865 5866 wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x", 5867 params->key_mgmt_suites); 5868 num_suites = 0; 5869 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X) 5870 suites[num_suites++] = WLAN_AKM_SUITE_8021X; 5871 if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK) 5872 suites[num_suites++] = WLAN_AKM_SUITE_PSK; 5873 if (num_suites) { 5874 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES, 5875 num_suites * sizeof(u32), suites); 5876 } 5877 5878 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X && 5879 params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40)) 5880 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT); 5881 5882 wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x", 5883 params->pairwise_ciphers); 5884 num_suites = 0; 5885 if (params->pairwise_ciphers & WPA_CIPHER_CCMP) 5886 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP; 5887 if (params->pairwise_ciphers & WPA_CIPHER_GCMP) 5888 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP; 5889 if (params->pairwise_ciphers & WPA_CIPHER_TKIP) 5890 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP; 5891 if (params->pairwise_ciphers & WPA_CIPHER_WEP104) 5892 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104; 5893 if (params->pairwise_ciphers & WPA_CIPHER_WEP40) 5894 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40; 5895 if (num_suites) { 5896 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, 5897 num_suites * sizeof(u32), suites); 5898 } 5899 5900 wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x", 5901 params->group_cipher); 5902 switch (params->group_cipher) { 5903 case WPA_CIPHER_CCMP: 5904 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5905 WLAN_CIPHER_SUITE_CCMP); 5906 break; 5907 case WPA_CIPHER_GCMP: 5908 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5909 WLAN_CIPHER_SUITE_GCMP); 5910 break; 5911 case WPA_CIPHER_TKIP: 5912 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5913 WLAN_CIPHER_SUITE_TKIP); 5914 break; 5915 case WPA_CIPHER_WEP104: 5916 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5917 WLAN_CIPHER_SUITE_WEP104); 5918 break; 5919 case WPA_CIPHER_WEP40: 5920 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5921 WLAN_CIPHER_SUITE_WEP40); 5922 break; 5923 } 5924 5925 if (params->beacon_ies) { 5926 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies", 5927 params->beacon_ies); 5928 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies), 5929 wpabuf_head(params->beacon_ies)); 5930 } 5931 if (params->proberesp_ies) { 5932 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies", 5933 params->proberesp_ies); 5934 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP, 5935 wpabuf_len(params->proberesp_ies), 5936 wpabuf_head(params->proberesp_ies)); 5937 } 5938 if (params->assocresp_ies) { 5939 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies", 5940 params->assocresp_ies); 5941 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP, 5942 wpabuf_len(params->assocresp_ies), 5943 wpabuf_head(params->assocresp_ies)); 5944 } 5945 5946 if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER) { 5947 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d", 5948 params->ap_max_inactivity); 5949 NLA_PUT_U16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT, 5950 params->ap_max_inactivity); 5951 } 5952 5953 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5954 if (ret) { 5955 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)", 5956 ret, strerror(-ret)); 5957 } else { 5958 bss->beacon_set = 1; 5959 nl80211_set_bss(bss, params->cts_protect, params->preamble, 5960 params->short_slot_time, params->ht_opmode, 5961 params->isolate, params->basic_rates); 5962 } 5963 return ret; 5964 nla_put_failure: 5965 nlmsg_free(msg); 5966 return -ENOBUFS; 5967} 5968 5969 5970static int wpa_driver_nl80211_set_freq(struct i802_bss *bss, 5971 struct hostapd_freq_params *freq) 5972{ 5973 struct wpa_driver_nl80211_data *drv = bss->drv; 5974 struct nl_msg *msg; 5975 int ret; 5976 5977 wpa_printf(MSG_DEBUG, "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d," 5978 " bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)", 5979 freq->freq, freq->ht_enabled, freq->vht_enabled, 5980 freq->bandwidth, freq->center_freq1, freq->center_freq2); 5981 msg = nlmsg_alloc(); 5982 if (!msg) 5983 return -1; 5984 5985 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 5986 5987 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5988 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq); 5989 if (freq->vht_enabled) { 5990 switch (freq->bandwidth) { 5991 case 20: 5992 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 5993 NL80211_CHAN_WIDTH_20); 5994 break; 5995 case 40: 5996 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 5997 NL80211_CHAN_WIDTH_40); 5998 break; 5999 case 80: 6000 if (freq->center_freq2) 6001 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 6002 NL80211_CHAN_WIDTH_80P80); 6003 else 6004 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 6005 NL80211_CHAN_WIDTH_80); 6006 break; 6007 case 160: 6008 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 6009 NL80211_CHAN_WIDTH_160); 6010 break; 6011 default: 6012 return -1; 6013 } 6014 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1, freq->center_freq1); 6015 if (freq->center_freq2) 6016 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ2, 6017 freq->center_freq2); 6018 } else if (freq->ht_enabled) { 6019 switch (freq->sec_channel_offset) { 6020 case -1: 6021 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 6022 NL80211_CHAN_HT40MINUS); 6023 break; 6024 case 1: 6025 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 6026 NL80211_CHAN_HT40PLUS); 6027 break; 6028 default: 6029 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 6030 NL80211_CHAN_HT20); 6031 break; 6032 } 6033 } 6034 6035 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6036 msg = NULL; 6037 if (ret == 0) { 6038 bss->freq = freq->freq; 6039 return 0; 6040 } 6041 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): " 6042 "%d (%s)", freq->freq, ret, strerror(-ret)); 6043nla_put_failure: 6044 nlmsg_free(msg); 6045 return -1; 6046} 6047 6048 6049static u32 sta_flags_nl80211(int flags) 6050{ 6051 u32 f = 0; 6052 6053 if (flags & WPA_STA_AUTHORIZED) 6054 f |= BIT(NL80211_STA_FLAG_AUTHORIZED); 6055 if (flags & WPA_STA_WMM) 6056 f |= BIT(NL80211_STA_FLAG_WME); 6057 if (flags & WPA_STA_SHORT_PREAMBLE) 6058 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 6059 if (flags & WPA_STA_MFP) 6060 f |= BIT(NL80211_STA_FLAG_MFP); 6061 if (flags & WPA_STA_TDLS_PEER) 6062 f |= BIT(NL80211_STA_FLAG_TDLS_PEER); 6063 6064 return f; 6065} 6066 6067 6068static int wpa_driver_nl80211_sta_add(void *priv, 6069 struct hostapd_sta_add_params *params) 6070{ 6071 struct i802_bss *bss = priv; 6072 struct wpa_driver_nl80211_data *drv = bss->drv; 6073 struct nl_msg *msg; 6074 struct nl80211_sta_flag_update upd; 6075 int ret = -ENOBUFS; 6076 6077 if ((params->flags & WPA_STA_TDLS_PEER) && 6078 !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 6079 return -EOPNOTSUPP; 6080 6081 msg = nlmsg_alloc(); 6082 if (!msg) 6083 return -ENOMEM; 6084 6085 wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR, 6086 params->set ? "Set" : "Add", MAC2STR(params->addr)); 6087 nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION : 6088 NL80211_CMD_NEW_STATION); 6089 6090 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 6091 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr); 6092 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len, 6093 params->supp_rates); 6094 wpa_hexdump(MSG_DEBUG, " * supported rates", params->supp_rates, 6095 params->supp_rates_len); 6096 if (!params->set) { 6097 if (params->aid) { 6098 wpa_printf(MSG_DEBUG, " * aid=%u", params->aid); 6099 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid); 6100 } else { 6101 /* 6102 * cfg80211 validates that AID is non-zero, so we have 6103 * to make this a non-zero value for the TDLS case where 6104 * a dummy STA entry is used for now. 6105 */ 6106 wpa_printf(MSG_DEBUG, " * aid=1 (TDLS workaround)"); 6107 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, 1); 6108 } 6109 wpa_printf(MSG_DEBUG, " * listen_interval=%u", 6110 params->listen_interval); 6111 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL, 6112 params->listen_interval); 6113 } 6114 if (params->ht_capabilities) { 6115 wpa_hexdump(MSG_DEBUG, " * ht_capabilities", 6116 (u8 *) params->ht_capabilities, 6117 sizeof(*params->ht_capabilities)); 6118 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, 6119 sizeof(*params->ht_capabilities), 6120 params->ht_capabilities); 6121 } 6122 6123 if (params->vht_capabilities) { 6124 wpa_hexdump(MSG_DEBUG, " * vht_capabilities", 6125 (u8 *) params->vht_capabilities, 6126 sizeof(*params->vht_capabilities)); 6127 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, 6128 sizeof(*params->vht_capabilities), 6129 params->vht_capabilities); 6130 } 6131 6132 wpa_printf(MSG_DEBUG, " * capability=0x%x", params->capability); 6133 NLA_PUT_U16(msg, NL80211_ATTR_STA_CAPABILITY, params->capability); 6134 6135 if (params->ext_capab) { 6136 wpa_hexdump(MSG_DEBUG, " * ext_capab", 6137 params->ext_capab, params->ext_capab_len); 6138 NLA_PUT(msg, NL80211_ATTR_STA_EXT_CAPABILITY, 6139 params->ext_capab_len, params->ext_capab); 6140 } 6141 6142 os_memset(&upd, 0, sizeof(upd)); 6143 upd.mask = sta_flags_nl80211(params->flags); 6144 upd.set = upd.mask; 6145 wpa_printf(MSG_DEBUG, " * flags set=0x%x mask=0x%x", 6146 upd.set, upd.mask); 6147 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 6148 6149 if (params->flags & WPA_STA_WMM) { 6150 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME); 6151 6152 if (!wme) 6153 goto nla_put_failure; 6154 6155 wpa_printf(MSG_DEBUG, " * qosinfo=0x%x", params->qosinfo); 6156 NLA_PUT_U8(msg, NL80211_STA_WME_UAPSD_QUEUES, 6157 params->qosinfo & WMM_QOSINFO_STA_AC_MASK); 6158 NLA_PUT_U8(msg, NL80211_STA_WME_MAX_SP, 6159 (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) & 6160 WMM_QOSINFO_STA_SP_MASK); 6161 nla_nest_end(msg, wme); 6162 } 6163 6164 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6165 msg = NULL; 6166 if (ret) 6167 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION " 6168 "result: %d (%s)", params->set ? "SET" : "NEW", ret, 6169 strerror(-ret)); 6170 if (ret == -EEXIST) 6171 ret = 0; 6172 nla_put_failure: 6173 nlmsg_free(msg); 6174 return ret; 6175} 6176 6177 6178static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr) 6179{ 6180 struct wpa_driver_nl80211_data *drv = bss->drv; 6181 struct nl_msg *msg; 6182 int ret; 6183 6184 msg = nlmsg_alloc(); 6185 if (!msg) 6186 return -ENOMEM; 6187 6188 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 6189 6190 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 6191 if_nametoindex(bss->ifname)); 6192 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 6193 6194 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6195 if (ret == -ENOENT) 6196 return 0; 6197 return ret; 6198 nla_put_failure: 6199 nlmsg_free(msg); 6200 return -ENOBUFS; 6201} 6202 6203 6204static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, 6205 int ifidx) 6206{ 6207 struct nl_msg *msg; 6208 6209 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx); 6210 6211 /* stop listening for EAPOL on this interface */ 6212 del_ifidx(drv, ifidx); 6213 6214 msg = nlmsg_alloc(); 6215 if (!msg) 6216 goto nla_put_failure; 6217 6218 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE); 6219 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx); 6220 6221 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 6222 return; 6223 msg = NULL; 6224 nla_put_failure: 6225 nlmsg_free(msg); 6226 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx); 6227} 6228 6229 6230static const char * nl80211_iftype_str(enum nl80211_iftype mode) 6231{ 6232 switch (mode) { 6233 case NL80211_IFTYPE_ADHOC: 6234 return "ADHOC"; 6235 case NL80211_IFTYPE_STATION: 6236 return "STATION"; 6237 case NL80211_IFTYPE_AP: 6238 return "AP"; 6239 case NL80211_IFTYPE_MONITOR: 6240 return "MONITOR"; 6241 case NL80211_IFTYPE_P2P_CLIENT: 6242 return "P2P_CLIENT"; 6243 case NL80211_IFTYPE_P2P_GO: 6244 return "P2P_GO"; 6245 default: 6246 return "unknown"; 6247 } 6248} 6249 6250 6251static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv, 6252 const char *ifname, 6253 enum nl80211_iftype iftype, 6254 const u8 *addr, int wds) 6255{ 6256 struct nl_msg *msg; 6257 int ifidx; 6258 int ret = -ENOBUFS; 6259 6260 wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)", 6261 iftype, nl80211_iftype_str(iftype)); 6262 6263 msg = nlmsg_alloc(); 6264 if (!msg) 6265 return -1; 6266 6267 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE); 6268 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6269 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname); 6270 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype); 6271 6272 if (iftype == NL80211_IFTYPE_MONITOR) { 6273 struct nlattr *flags; 6274 6275 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS); 6276 if (!flags) 6277 goto nla_put_failure; 6278 6279 NLA_PUT_FLAG(msg, NL80211_MNTR_FLAG_COOK_FRAMES); 6280 6281 nla_nest_end(msg, flags); 6282 } else if (wds) { 6283 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds); 6284 } 6285 6286 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6287 msg = NULL; 6288 if (ret) { 6289 nla_put_failure: 6290 nlmsg_free(msg); 6291 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)", 6292 ifname, ret, strerror(-ret)); 6293 return ret; 6294 } 6295 6296 ifidx = if_nametoindex(ifname); 6297 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d", 6298 ifname, ifidx); 6299 6300 if (ifidx <= 0) 6301 return -1; 6302 6303 /* start listening for EAPOL on this interface */ 6304 add_ifidx(drv, ifidx); 6305 6306 if (addr && iftype != NL80211_IFTYPE_MONITOR && 6307 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) { 6308 nl80211_remove_iface(drv, ifidx); 6309 return -1; 6310 } 6311 6312 return ifidx; 6313} 6314 6315 6316static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv, 6317 const char *ifname, enum nl80211_iftype iftype, 6318 const u8 *addr, int wds) 6319{ 6320 int ret; 6321 6322 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds); 6323 6324 /* if error occurred and interface exists already */ 6325 if (ret == -ENFILE && if_nametoindex(ifname)) { 6326 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname); 6327 6328 /* Try to remove the interface that was already there. */ 6329 nl80211_remove_iface(drv, if_nametoindex(ifname)); 6330 6331 /* Try to create the interface again */ 6332 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, 6333 wds); 6334 } 6335 6336 if (ret >= 0 && is_p2p_interface(iftype)) 6337 nl80211_disable_11b_rates(drv, ret, 1); 6338 6339 return ret; 6340} 6341 6342 6343static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok) 6344{ 6345 struct ieee80211_hdr *hdr; 6346 u16 fc; 6347 union wpa_event_data event; 6348 6349 hdr = (struct ieee80211_hdr *) buf; 6350 fc = le_to_host16(hdr->frame_control); 6351 6352 os_memset(&event, 0, sizeof(event)); 6353 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 6354 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 6355 event.tx_status.dst = hdr->addr1; 6356 event.tx_status.data = buf; 6357 event.tx_status.data_len = len; 6358 event.tx_status.ack = ok; 6359 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event); 6360} 6361 6362 6363static void from_unknown_sta(struct wpa_driver_nl80211_data *drv, 6364 u8 *buf, size_t len) 6365{ 6366 struct ieee80211_hdr *hdr = (void *)buf; 6367 u16 fc; 6368 union wpa_event_data event; 6369 6370 if (len < sizeof(*hdr)) 6371 return; 6372 6373 fc = le_to_host16(hdr->frame_control); 6374 6375 os_memset(&event, 0, sizeof(event)); 6376 event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len); 6377 event.rx_from_unknown.addr = hdr->addr2; 6378 event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) == 6379 (WLAN_FC_FROMDS | WLAN_FC_TODS); 6380 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 6381} 6382 6383 6384static void handle_frame(struct wpa_driver_nl80211_data *drv, 6385 u8 *buf, size_t len, int datarate, int ssi_signal) 6386{ 6387 struct ieee80211_hdr *hdr; 6388 u16 fc; 6389 union wpa_event_data event; 6390 6391 hdr = (struct ieee80211_hdr *) buf; 6392 fc = le_to_host16(hdr->frame_control); 6393 6394 switch (WLAN_FC_GET_TYPE(fc)) { 6395 case WLAN_FC_TYPE_MGMT: 6396 os_memset(&event, 0, sizeof(event)); 6397 event.rx_mgmt.frame = buf; 6398 event.rx_mgmt.frame_len = len; 6399 event.rx_mgmt.datarate = datarate; 6400 event.rx_mgmt.ssi_signal = ssi_signal; 6401 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 6402 break; 6403 case WLAN_FC_TYPE_CTRL: 6404 /* can only get here with PS-Poll frames */ 6405 wpa_printf(MSG_DEBUG, "CTRL"); 6406 from_unknown_sta(drv, buf, len); 6407 break; 6408 case WLAN_FC_TYPE_DATA: 6409 from_unknown_sta(drv, buf, len); 6410 break; 6411 } 6412} 6413 6414 6415static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx) 6416{ 6417 struct wpa_driver_nl80211_data *drv = eloop_ctx; 6418 int len; 6419 unsigned char buf[3000]; 6420 struct ieee80211_radiotap_iterator iter; 6421 int ret; 6422 int datarate = 0, ssi_signal = 0; 6423 int injected = 0, failed = 0, rxflags = 0; 6424 6425 len = recv(sock, buf, sizeof(buf), 0); 6426 if (len < 0) { 6427 perror("recv"); 6428 return; 6429 } 6430 6431 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) { 6432 printf("received invalid radiotap frame\n"); 6433 return; 6434 } 6435 6436 while (1) { 6437 ret = ieee80211_radiotap_iterator_next(&iter); 6438 if (ret == -ENOENT) 6439 break; 6440 if (ret) { 6441 printf("received invalid radiotap frame (%d)\n", ret); 6442 return; 6443 } 6444 switch (iter.this_arg_index) { 6445 case IEEE80211_RADIOTAP_FLAGS: 6446 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS) 6447 len -= 4; 6448 break; 6449 case IEEE80211_RADIOTAP_RX_FLAGS: 6450 rxflags = 1; 6451 break; 6452 case IEEE80211_RADIOTAP_TX_FLAGS: 6453 injected = 1; 6454 failed = le_to_host16((*(uint16_t *) iter.this_arg)) & 6455 IEEE80211_RADIOTAP_F_TX_FAIL; 6456 break; 6457 case IEEE80211_RADIOTAP_DATA_RETRIES: 6458 break; 6459 case IEEE80211_RADIOTAP_CHANNEL: 6460 /* TODO: convert from freq/flags to channel number */ 6461 break; 6462 case IEEE80211_RADIOTAP_RATE: 6463 datarate = *iter.this_arg * 5; 6464 break; 6465 case IEEE80211_RADIOTAP_DBM_ANTSIGNAL: 6466 ssi_signal = (s8) *iter.this_arg; 6467 break; 6468 } 6469 } 6470 6471 if (rxflags && injected) 6472 return; 6473 6474 if (!injected) 6475 handle_frame(drv, buf + iter.max_length, 6476 len - iter.max_length, datarate, ssi_signal); 6477 else 6478 handle_tx_callback(drv->ctx, buf + iter.max_length, 6479 len - iter.max_length, !failed); 6480} 6481 6482 6483/* 6484 * we post-process the filter code later and rewrite 6485 * this to the offset to the last instruction 6486 */ 6487#define PASS 0xFF 6488#define FAIL 0xFE 6489 6490static struct sock_filter msock_filter_insns[] = { 6491 /* 6492 * do a little-endian load of the radiotap length field 6493 */ 6494 /* load lower byte into A */ 6495 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2), 6496 /* put it into X (== index register) */ 6497 BPF_STMT(BPF_MISC| BPF_TAX, 0), 6498 /* load upper byte into A */ 6499 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3), 6500 /* left-shift it by 8 */ 6501 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8), 6502 /* or with X */ 6503 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0), 6504 /* put result into X */ 6505 BPF_STMT(BPF_MISC| BPF_TAX, 0), 6506 6507 /* 6508 * Allow management frames through, this also gives us those 6509 * management frames that we sent ourselves with status 6510 */ 6511 /* load the lower byte of the IEEE 802.11 frame control field */ 6512 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6513 /* mask off frame type and version */ 6514 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF), 6515 /* accept frame if it's both 0, fall through otherwise */ 6516 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0), 6517 6518 /* 6519 * TODO: add a bit to radiotap RX flags that indicates 6520 * that the sending station is not associated, then 6521 * add a filter here that filters on our DA and that flag 6522 * to allow us to deauth frames to that bad station. 6523 * 6524 * For now allow all To DS data frames through. 6525 */ 6526 /* load the IEEE 802.11 frame control field */ 6527 BPF_STMT(BPF_LD | BPF_H | BPF_IND, 0), 6528 /* mask off frame type, version and DS status */ 6529 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03), 6530 /* accept frame if version 0, type 2 and To DS, fall through otherwise 6531 */ 6532 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0), 6533 6534#if 0 6535 /* 6536 * drop non-data frames 6537 */ 6538 /* load the lower byte of the frame control field */ 6539 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6540 /* mask off QoS bit */ 6541 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c), 6542 /* drop non-data frames */ 6543 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL), 6544#endif 6545 /* load the upper byte of the frame control field */ 6546 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1), 6547 /* mask off toDS/fromDS */ 6548 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03), 6549 /* accept WDS frames */ 6550 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0), 6551 6552 /* 6553 * add header length to index 6554 */ 6555 /* load the lower byte of the frame control field */ 6556 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6557 /* mask off QoS bit */ 6558 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80), 6559 /* right shift it by 6 to give 0 or 2 */ 6560 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6), 6561 /* add data frame header length */ 6562 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24), 6563 /* add index, was start of 802.11 header */ 6564 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0), 6565 /* move to index, now start of LL header */ 6566 BPF_STMT(BPF_MISC | BPF_TAX, 0), 6567 6568 /* 6569 * Accept empty data frames, we use those for 6570 * polling activity. 6571 */ 6572 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0), 6573 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0), 6574 6575 /* 6576 * Accept EAPOL frames 6577 */ 6578 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0), 6579 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL), 6580 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4), 6581 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL), 6582 6583 /* keep these last two statements or change the code below */ 6584 /* return 0 == "DROP" */ 6585 BPF_STMT(BPF_RET | BPF_K, 0), 6586 /* return ~0 == "keep all" */ 6587 BPF_STMT(BPF_RET | BPF_K, ~0), 6588}; 6589 6590static struct sock_fprog msock_filter = { 6591 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]), 6592 .filter = msock_filter_insns, 6593}; 6594 6595 6596static int add_monitor_filter(int s) 6597{ 6598 int idx; 6599 6600 /* rewrite all PASS/FAIL jump offsets */ 6601 for (idx = 0; idx < msock_filter.len; idx++) { 6602 struct sock_filter *insn = &msock_filter_insns[idx]; 6603 6604 if (BPF_CLASS(insn->code) == BPF_JMP) { 6605 if (insn->code == (BPF_JMP|BPF_JA)) { 6606 if (insn->k == PASS) 6607 insn->k = msock_filter.len - idx - 2; 6608 else if (insn->k == FAIL) 6609 insn->k = msock_filter.len - idx - 3; 6610 } 6611 6612 if (insn->jt == PASS) 6613 insn->jt = msock_filter.len - idx - 2; 6614 else if (insn->jt == FAIL) 6615 insn->jt = msock_filter.len - idx - 3; 6616 6617 if (insn->jf == PASS) 6618 insn->jf = msock_filter.len - idx - 2; 6619 else if (insn->jf == FAIL) 6620 insn->jf = msock_filter.len - idx - 3; 6621 } 6622 } 6623 6624 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER, 6625 &msock_filter, sizeof(msock_filter))) { 6626 perror("SO_ATTACH_FILTER"); 6627 return -1; 6628 } 6629 6630 return 0; 6631} 6632 6633 6634static void nl80211_remove_monitor_interface( 6635 struct wpa_driver_nl80211_data *drv) 6636{ 6637 drv->monitor_refcount--; 6638 if (drv->monitor_refcount > 0) 6639 return; 6640 6641 if (drv->monitor_ifidx >= 0) { 6642 nl80211_remove_iface(drv, drv->monitor_ifidx); 6643 drv->monitor_ifidx = -1; 6644 } 6645 if (drv->monitor_sock >= 0) { 6646 eloop_unregister_read_sock(drv->monitor_sock); 6647 close(drv->monitor_sock); 6648 drv->monitor_sock = -1; 6649 } 6650} 6651 6652 6653static int 6654nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv) 6655{ 6656 char buf[IFNAMSIZ]; 6657 struct sockaddr_ll ll; 6658 int optval; 6659 socklen_t optlen; 6660 6661 if (drv->monitor_ifidx >= 0) { 6662 drv->monitor_refcount++; 6663 return 0; 6664 } 6665 6666 if (os_strncmp(drv->first_bss.ifname, "p2p-", 4) == 0) { 6667 /* 6668 * P2P interface name is of the format p2p-%s-%d. For monitor 6669 * interface name corresponding to P2P GO, replace "p2p-" with 6670 * "mon-" to retain the same interface name length and to 6671 * indicate that it is a monitor interface. 6672 */ 6673 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss.ifname + 4); 6674 } else { 6675 /* Non-P2P interface with AP functionality. */ 6676 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname); 6677 } 6678 6679 buf[IFNAMSIZ - 1] = '\0'; 6680 6681 drv->monitor_ifidx = 6682 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL, 6683 0); 6684 6685 if (drv->monitor_ifidx == -EOPNOTSUPP) { 6686 /* 6687 * This is backward compatibility for a few versions of 6688 * the kernel only that didn't advertise the right 6689 * attributes for the only driver that then supported 6690 * AP mode w/o monitor -- ath6kl. 6691 */ 6692 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support " 6693 "monitor interface type - try to run without it"); 6694 drv->device_ap_sme = 1; 6695 } 6696 6697 if (drv->monitor_ifidx < 0) 6698 return -1; 6699 6700 if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1)) 6701 goto error; 6702 6703 memset(&ll, 0, sizeof(ll)); 6704 ll.sll_family = AF_PACKET; 6705 ll.sll_ifindex = drv->monitor_ifidx; 6706 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); 6707 if (drv->monitor_sock < 0) { 6708 perror("socket[PF_PACKET,SOCK_RAW]"); 6709 goto error; 6710 } 6711 6712 if (add_monitor_filter(drv->monitor_sock)) { 6713 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor " 6714 "interface; do filtering in user space"); 6715 /* This works, but will cost in performance. */ 6716 } 6717 6718 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) { 6719 perror("monitor socket bind"); 6720 goto error; 6721 } 6722 6723 optlen = sizeof(optval); 6724 optval = 20; 6725 if (setsockopt 6726 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) { 6727 perror("Failed to set socket priority"); 6728 goto error; 6729 } 6730 6731 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read, 6732 drv, NULL)) { 6733 printf("Could not register monitor read socket\n"); 6734 goto error; 6735 } 6736 6737 return 0; 6738 error: 6739 nl80211_remove_monitor_interface(drv); 6740 return -1; 6741} 6742 6743 6744static int nl80211_setup_ap(struct i802_bss *bss) 6745{ 6746 struct wpa_driver_nl80211_data *drv = bss->drv; 6747 6748 wpa_printf(MSG_DEBUG, "nl80211: Setup AP - device_ap_sme=%d " 6749 "use_monitor=%d", drv->device_ap_sme, drv->use_monitor); 6750 6751 /* 6752 * Disable Probe Request reporting unless we need it in this way for 6753 * devices that include the AP SME, in the other case (unless using 6754 * monitor iface) we'll get it through the nl_mgmt socket instead. 6755 */ 6756 if (!drv->device_ap_sme) 6757 wpa_driver_nl80211_probe_req_report(bss, 0); 6758 6759 if (!drv->device_ap_sme && !drv->use_monitor) 6760 if (nl80211_mgmt_subscribe_ap(bss)) 6761 return -1; 6762 6763 if (drv->device_ap_sme && !drv->use_monitor) 6764 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 6765 return -1; 6766 6767 if (!drv->device_ap_sme && drv->use_monitor && 6768 nl80211_create_monitor_interface(drv) && 6769 !drv->device_ap_sme) 6770 return -1; 6771 6772#ifdef ANDROID_P2P 6773 if (drv->device_ap_sme && drv->use_monitor) 6774 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 6775 return -1; 6776 6777 if (drv->use_monitor && 6778 nl80211_create_monitor_interface(drv)) 6779 return -1; 6780#endif 6781 6782 if (drv->device_ap_sme && 6783 wpa_driver_nl80211_probe_req_report(bss, 1) < 0) { 6784 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable " 6785 "Probe Request frame reporting in AP mode"); 6786 /* Try to survive without this */ 6787 } 6788 6789 return 0; 6790} 6791 6792 6793static void nl80211_teardown_ap(struct i802_bss *bss) 6794{ 6795 struct wpa_driver_nl80211_data *drv = bss->drv; 6796 6797 if (drv->device_ap_sme) { 6798 wpa_driver_nl80211_probe_req_report(bss, 0); 6799 if (!drv->use_monitor) 6800 nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)"); 6801 } else if (drv->use_monitor) 6802 nl80211_remove_monitor_interface(drv); 6803 else 6804 nl80211_mgmt_unsubscribe(bss, "AP teardown"); 6805 6806 bss->beacon_set = 0; 6807} 6808 6809 6810static int nl80211_send_eapol_data(struct i802_bss *bss, 6811 const u8 *addr, const u8 *data, 6812 size_t data_len) 6813{ 6814 struct sockaddr_ll ll; 6815 int ret; 6816 6817 if (bss->drv->eapol_tx_sock < 0) { 6818 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL"); 6819 return -1; 6820 } 6821 6822 os_memset(&ll, 0, sizeof(ll)); 6823 ll.sll_family = AF_PACKET; 6824 ll.sll_ifindex = bss->ifindex; 6825 ll.sll_protocol = htons(ETH_P_PAE); 6826 ll.sll_halen = ETH_ALEN; 6827 os_memcpy(ll.sll_addr, addr, ETH_ALEN); 6828 ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0, 6829 (struct sockaddr *) &ll, sizeof(ll)); 6830 if (ret < 0) 6831 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s", 6832 strerror(errno)); 6833 6834 return ret; 6835} 6836 6837 6838static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 6839 6840static int wpa_driver_nl80211_hapd_send_eapol( 6841 void *priv, const u8 *addr, const u8 *data, 6842 size_t data_len, int encrypt, const u8 *own_addr, u32 flags) 6843{ 6844 struct i802_bss *bss = priv; 6845 struct wpa_driver_nl80211_data *drv = bss->drv; 6846 struct ieee80211_hdr *hdr; 6847 size_t len; 6848 u8 *pos; 6849 int res; 6850 int qos = flags & WPA_STA_WMM; 6851#ifndef ANDROID_P2P 6852 if (drv->device_ap_sme || !drv->use_monitor) 6853#else 6854 if (drv->device_ap_sme && !drv->use_monitor) 6855#endif 6856 return nl80211_send_eapol_data(bss, addr, data, data_len); 6857 6858 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 + 6859 data_len; 6860 hdr = os_zalloc(len); 6861 if (hdr == NULL) { 6862 printf("malloc() failed for i802_send_data(len=%lu)\n", 6863 (unsigned long) len); 6864 return -1; 6865 } 6866 6867 hdr->frame_control = 6868 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA); 6869 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS); 6870 if (encrypt) 6871 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP); 6872 if (qos) { 6873 hdr->frame_control |= 6874 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4); 6875 } 6876 6877 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN); 6878 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 6879 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 6880 pos = (u8 *) (hdr + 1); 6881 6882 if (qos) { 6883 /* Set highest priority in QoS header */ 6884 pos[0] = 7; 6885 pos[1] = 0; 6886 pos += 2; 6887 } 6888 6889 memcpy(pos, rfc1042_header, sizeof(rfc1042_header)); 6890 pos += sizeof(rfc1042_header); 6891 WPA_PUT_BE16(pos, ETH_P_PAE); 6892 pos += 2; 6893 memcpy(pos, data, data_len); 6894 6895 res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0, 6896 0, 0, 0, 0); 6897 if (res < 0) { 6898 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - " 6899 "failed: %d (%s)", 6900 (unsigned long) len, errno, strerror(errno)); 6901 } 6902 os_free(hdr); 6903 6904 return res; 6905} 6906 6907 6908static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr, 6909 int total_flags, 6910 int flags_or, int flags_and) 6911{ 6912 struct i802_bss *bss = priv; 6913 struct wpa_driver_nl80211_data *drv = bss->drv; 6914 struct nl_msg *msg; 6915 struct nlattr *flags; 6916 struct nl80211_sta_flag_update upd; 6917 6918 msg = nlmsg_alloc(); 6919 if (!msg) 6920 return -ENOMEM; 6921 6922 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 6923 6924 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 6925 if_nametoindex(bss->ifname)); 6926 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 6927 6928 /* 6929 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This 6930 * can be removed eventually. 6931 */ 6932 flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS); 6933 if (!flags) 6934 goto nla_put_failure; 6935 if (total_flags & WPA_STA_AUTHORIZED) 6936 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_AUTHORIZED); 6937 6938 if (total_flags & WPA_STA_WMM) 6939 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_WME); 6940 6941 if (total_flags & WPA_STA_SHORT_PREAMBLE) 6942 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_SHORT_PREAMBLE); 6943 6944 if (total_flags & WPA_STA_MFP) 6945 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_MFP); 6946 6947 if (total_flags & WPA_STA_TDLS_PEER) 6948 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_TDLS_PEER); 6949 6950 nla_nest_end(msg, flags); 6951 6952 os_memset(&upd, 0, sizeof(upd)); 6953 upd.mask = sta_flags_nl80211(flags_or | ~flags_and); 6954 upd.set = sta_flags_nl80211(flags_or); 6955 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 6956 6957 return send_and_recv_msgs(drv, msg, NULL, NULL); 6958 nla_put_failure: 6959 nlmsg_free(msg); 6960 return -ENOBUFS; 6961} 6962 6963 6964static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv, 6965 struct wpa_driver_associate_params *params) 6966{ 6967 enum nl80211_iftype nlmode, old_mode; 6968 struct hostapd_freq_params freq = { 6969 .freq = params->freq, 6970 }; 6971 6972 if (params->p2p) { 6973 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P " 6974 "group (GO)"); 6975 nlmode = NL80211_IFTYPE_P2P_GO; 6976 } else 6977 nlmode = NL80211_IFTYPE_AP; 6978 6979 old_mode = drv->nlmode; 6980 if (wpa_driver_nl80211_set_mode(&drv->first_bss, nlmode)) { 6981 nl80211_remove_monitor_interface(drv); 6982 return -1; 6983 } 6984 6985 if (wpa_driver_nl80211_set_freq(&drv->first_bss, &freq)) { 6986 if (old_mode != nlmode) 6987 wpa_driver_nl80211_set_mode(&drv->first_bss, old_mode); 6988 nl80211_remove_monitor_interface(drv); 6989 return -1; 6990 } 6991 6992 return 0; 6993} 6994 6995 6996static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv) 6997{ 6998 struct nl_msg *msg; 6999 int ret = -1; 7000 7001 msg = nlmsg_alloc(); 7002 if (!msg) 7003 return -1; 7004 7005 nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS); 7006 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7007 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7008 msg = NULL; 7009 if (ret) { 7010 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d " 7011 "(%s)", ret, strerror(-ret)); 7012 goto nla_put_failure; 7013 } 7014 7015 ret = 0; 7016 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully"); 7017 7018nla_put_failure: 7019 nlmsg_free(msg); 7020 return ret; 7021} 7022 7023 7024static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv, 7025 struct wpa_driver_associate_params *params) 7026{ 7027 struct nl_msg *msg; 7028 int ret = -1; 7029 int count = 0; 7030 7031 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex); 7032 7033 if (wpa_driver_nl80211_set_mode(&drv->first_bss, 7034 NL80211_IFTYPE_ADHOC)) { 7035 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into " 7036 "IBSS mode"); 7037 return -1; 7038 } 7039 7040retry: 7041 msg = nlmsg_alloc(); 7042 if (!msg) 7043 return -1; 7044 7045 nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS); 7046 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7047 7048 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid)) 7049 goto nla_put_failure; 7050 7051 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 7052 params->ssid, params->ssid_len); 7053 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 7054 params->ssid); 7055 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 7056 drv->ssid_len = params->ssid_len; 7057 7058 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 7059 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 7060 7061 ret = nl80211_set_conn_keys(params, msg); 7062 if (ret) 7063 goto nla_put_failure; 7064 7065 if (params->bssid && params->fixed_bssid) { 7066 wpa_printf(MSG_DEBUG, " * BSSID=" MACSTR, 7067 MAC2STR(params->bssid)); 7068 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 7069 } 7070 7071 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 7072 params->key_mgmt_suite == KEY_MGMT_PSK || 7073 params->key_mgmt_suite == KEY_MGMT_802_1X_SHA256 || 7074 params->key_mgmt_suite == KEY_MGMT_PSK_SHA256) { 7075 wpa_printf(MSG_DEBUG, " * control port"); 7076 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 7077 } 7078 7079 if (params->wpa_ie) { 7080 wpa_hexdump(MSG_DEBUG, 7081 " * Extra IEs for Beacon/Probe Response frames", 7082 params->wpa_ie, params->wpa_ie_len); 7083 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 7084 params->wpa_ie); 7085 } 7086 7087 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7088 msg = NULL; 7089 if (ret) { 7090 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)", 7091 ret, strerror(-ret)); 7092 count++; 7093 if (ret == -EALREADY && count == 1) { 7094 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after " 7095 "forced leave"); 7096 nl80211_leave_ibss(drv); 7097 nlmsg_free(msg); 7098 goto retry; 7099 } 7100 7101 goto nla_put_failure; 7102 } 7103 ret = 0; 7104 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully"); 7105 7106nla_put_failure: 7107 nlmsg_free(msg); 7108 return ret; 7109} 7110 7111 7112static int wpa_driver_nl80211_try_connect( 7113 struct wpa_driver_nl80211_data *drv, 7114 struct wpa_driver_associate_params *params) 7115{ 7116 struct nl_msg *msg; 7117 enum nl80211_auth_type type; 7118 int ret = 0; 7119 int algs; 7120 7121 msg = nlmsg_alloc(); 7122 if (!msg) 7123 return -1; 7124 7125 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex); 7126 nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT); 7127 7128 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7129 if (params->bssid) { 7130 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 7131 MAC2STR(params->bssid)); 7132 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 7133 } 7134 if (params->freq) { 7135 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 7136 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 7137 } 7138 if (params->bg_scan_period >= 0) { 7139 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 7140 params->bg_scan_period); 7141 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 7142 params->bg_scan_period); 7143 } 7144 if (params->ssid) { 7145 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 7146 params->ssid, params->ssid_len); 7147 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 7148 params->ssid); 7149 if (params->ssid_len > sizeof(drv->ssid)) 7150 goto nla_put_failure; 7151 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 7152 drv->ssid_len = params->ssid_len; 7153 } 7154 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 7155 if (params->wpa_ie) 7156 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 7157 params->wpa_ie); 7158 7159 algs = 0; 7160 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 7161 algs++; 7162 if (params->auth_alg & WPA_AUTH_ALG_SHARED) 7163 algs++; 7164 if (params->auth_alg & WPA_AUTH_ALG_LEAP) 7165 algs++; 7166 if (algs > 1) { 7167 wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic " 7168 "selection"); 7169 goto skip_auth_type; 7170 } 7171 7172 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 7173 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 7174 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 7175 type = NL80211_AUTHTYPE_SHARED_KEY; 7176 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 7177 type = NL80211_AUTHTYPE_NETWORK_EAP; 7178 else if (params->auth_alg & WPA_AUTH_ALG_FT) 7179 type = NL80211_AUTHTYPE_FT; 7180 else 7181 goto nla_put_failure; 7182 7183 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 7184 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 7185 7186skip_auth_type: 7187 if (params->wpa_proto) { 7188 enum nl80211_wpa_versions ver = 0; 7189 7190 if (params->wpa_proto & WPA_PROTO_WPA) 7191 ver |= NL80211_WPA_VERSION_1; 7192 if (params->wpa_proto & WPA_PROTO_RSN) 7193 ver |= NL80211_WPA_VERSION_2; 7194 7195 wpa_printf(MSG_DEBUG, " * WPA Versions 0x%x", ver); 7196 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 7197 } 7198 7199 if (params->pairwise_suite != CIPHER_NONE) { 7200 int cipher; 7201 7202 switch (params->pairwise_suite) { 7203 case CIPHER_SMS4: 7204 cipher = WLAN_CIPHER_SUITE_SMS4; 7205 break; 7206 case CIPHER_WEP40: 7207 cipher = WLAN_CIPHER_SUITE_WEP40; 7208 break; 7209 case CIPHER_WEP104: 7210 cipher = WLAN_CIPHER_SUITE_WEP104; 7211 break; 7212 case CIPHER_CCMP: 7213 cipher = WLAN_CIPHER_SUITE_CCMP; 7214 break; 7215 case CIPHER_GCMP: 7216 cipher = WLAN_CIPHER_SUITE_GCMP; 7217 break; 7218 case CIPHER_TKIP: 7219 default: 7220 cipher = WLAN_CIPHER_SUITE_TKIP; 7221 break; 7222 } 7223 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 7224 } 7225 7226 if (params->group_suite != CIPHER_NONE) { 7227 int cipher; 7228 7229 switch (params->group_suite) { 7230 case CIPHER_SMS4: 7231 cipher = WLAN_CIPHER_SUITE_SMS4; 7232 break; 7233 case CIPHER_WEP40: 7234 cipher = WLAN_CIPHER_SUITE_WEP40; 7235 break; 7236 case CIPHER_WEP104: 7237 cipher = WLAN_CIPHER_SUITE_WEP104; 7238 break; 7239 case CIPHER_CCMP: 7240 cipher = WLAN_CIPHER_SUITE_CCMP; 7241 break; 7242 case CIPHER_GCMP: 7243 cipher = WLAN_CIPHER_SUITE_GCMP; 7244 break; 7245 case CIPHER_TKIP: 7246 default: 7247 cipher = WLAN_CIPHER_SUITE_TKIP; 7248 break; 7249 } 7250 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 7251 } 7252 7253 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 7254 params->key_mgmt_suite == KEY_MGMT_PSK || 7255 params->key_mgmt_suite == KEY_MGMT_FT_802_1X || 7256 params->key_mgmt_suite == KEY_MGMT_FT_PSK || 7257 params->key_mgmt_suite == KEY_MGMT_CCKM) { 7258 int mgmt = WLAN_AKM_SUITE_PSK; 7259 7260 switch (params->key_mgmt_suite) { 7261 case KEY_MGMT_CCKM: 7262 mgmt = WLAN_AKM_SUITE_CCKM; 7263 break; 7264 case KEY_MGMT_802_1X: 7265 mgmt = WLAN_AKM_SUITE_8021X; 7266 break; 7267 case KEY_MGMT_FT_802_1X: 7268 mgmt = WLAN_AKM_SUITE_FT_8021X; 7269 break; 7270 case KEY_MGMT_FT_PSK: 7271 mgmt = WLAN_AKM_SUITE_FT_PSK; 7272 break; 7273 case KEY_MGMT_PSK: 7274 default: 7275 mgmt = WLAN_AKM_SUITE_PSK; 7276 break; 7277 } 7278 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt); 7279 } 7280 7281#ifdef CONFIG_IEEE80211W 7282 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED) 7283 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED); 7284#endif /* CONFIG_IEEE80211W */ 7285 7286 if (params->disable_ht) 7287 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 7288 7289 if (params->htcaps && params->htcaps_mask) { 7290 int sz = sizeof(struct ieee80211_ht_capabilities); 7291 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 7292 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 7293 params->htcaps_mask); 7294 } 7295 7296#ifdef CONFIG_VHT_OVERRIDES 7297 if (params->disable_vht) { 7298 wpa_printf(MSG_DEBUG, " * VHT disabled"); 7299 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_VHT); 7300 } 7301 7302 if (params->vhtcaps && params->vhtcaps_mask) { 7303 int sz = sizeof(struct ieee80211_vht_capabilities); 7304 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, sz, params->vhtcaps); 7305 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz, 7306 params->vhtcaps_mask); 7307 } 7308#endif /* CONFIG_VHT_OVERRIDES */ 7309 7310 ret = nl80211_set_conn_keys(params, msg); 7311 if (ret) 7312 goto nla_put_failure; 7313 7314 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7315 msg = NULL; 7316 if (ret) { 7317 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d " 7318 "(%s)", ret, strerror(-ret)); 7319 goto nla_put_failure; 7320 } 7321 ret = 0; 7322 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully"); 7323 7324nla_put_failure: 7325 nlmsg_free(msg); 7326 return ret; 7327 7328} 7329 7330 7331static int wpa_driver_nl80211_connect( 7332 struct wpa_driver_nl80211_data *drv, 7333 struct wpa_driver_associate_params *params) 7334{ 7335 int ret = wpa_driver_nl80211_try_connect(drv, params); 7336 if (ret == -EALREADY) { 7337 /* 7338 * cfg80211 does not currently accept new connections if 7339 * we are already connected. As a workaround, force 7340 * disconnection and try again. 7341 */ 7342 wpa_printf(MSG_DEBUG, "nl80211: Explicitly " 7343 "disconnecting before reassociation " 7344 "attempt"); 7345 if (wpa_driver_nl80211_disconnect( 7346 drv, WLAN_REASON_PREV_AUTH_NOT_VALID)) 7347 return -1; 7348 /* Ignore the next local disconnect message. */ 7349 drv->ignore_next_local_disconnect = 1; 7350 ret = wpa_driver_nl80211_try_connect(drv, params); 7351 } 7352 return ret; 7353} 7354 7355 7356static int wpa_driver_nl80211_associate( 7357 void *priv, struct wpa_driver_associate_params *params) 7358{ 7359 struct i802_bss *bss = priv; 7360 struct wpa_driver_nl80211_data *drv = bss->drv; 7361 int ret = -1; 7362 struct nl_msg *msg; 7363 7364 if (params->mode == IEEE80211_MODE_AP) 7365 return wpa_driver_nl80211_ap(drv, params); 7366 7367 if (params->mode == IEEE80211_MODE_IBSS) 7368 return wpa_driver_nl80211_ibss(drv, params); 7369 7370 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) { 7371 enum nl80211_iftype nlmode = params->p2p ? 7372 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 7373 7374 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0) 7375 return -1; 7376 return wpa_driver_nl80211_connect(drv, params); 7377 } 7378 7379 drv->associated = 0; 7380 7381 msg = nlmsg_alloc(); 7382 if (!msg) 7383 return -1; 7384 7385 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)", 7386 drv->ifindex); 7387 nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE); 7388 7389 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7390 if (params->bssid) { 7391 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 7392 MAC2STR(params->bssid)); 7393 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 7394 } 7395 if (params->freq) { 7396 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 7397 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 7398 drv->assoc_freq = params->freq; 7399 } else 7400 drv->assoc_freq = 0; 7401 if (params->bg_scan_period >= 0) { 7402 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 7403 params->bg_scan_period); 7404 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 7405 params->bg_scan_period); 7406 } 7407 if (params->ssid) { 7408 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 7409 params->ssid, params->ssid_len); 7410 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 7411 params->ssid); 7412 if (params->ssid_len > sizeof(drv->ssid)) 7413 goto nla_put_failure; 7414 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 7415 drv->ssid_len = params->ssid_len; 7416 } 7417 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 7418 if (params->wpa_ie) 7419 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 7420 params->wpa_ie); 7421 7422 if (params->pairwise_suite != CIPHER_NONE) { 7423 int cipher; 7424 7425 switch (params->pairwise_suite) { 7426 case CIPHER_WEP40: 7427 cipher = WLAN_CIPHER_SUITE_WEP40; 7428 break; 7429 case CIPHER_WEP104: 7430 cipher = WLAN_CIPHER_SUITE_WEP104; 7431 break; 7432 case CIPHER_CCMP: 7433 cipher = WLAN_CIPHER_SUITE_CCMP; 7434 break; 7435 case CIPHER_GCMP: 7436 cipher = WLAN_CIPHER_SUITE_GCMP; 7437 break; 7438 case CIPHER_TKIP: 7439 default: 7440 cipher = WLAN_CIPHER_SUITE_TKIP; 7441 break; 7442 } 7443 wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher); 7444 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 7445 } 7446 7447 if (params->group_suite != CIPHER_NONE) { 7448 int cipher; 7449 7450 switch (params->group_suite) { 7451 case CIPHER_WEP40: 7452 cipher = WLAN_CIPHER_SUITE_WEP40; 7453 break; 7454 case CIPHER_WEP104: 7455 cipher = WLAN_CIPHER_SUITE_WEP104; 7456 break; 7457 case CIPHER_CCMP: 7458 cipher = WLAN_CIPHER_SUITE_CCMP; 7459 break; 7460 case CIPHER_GCMP: 7461 cipher = WLAN_CIPHER_SUITE_GCMP; 7462 break; 7463 case CIPHER_TKIP: 7464 default: 7465 cipher = WLAN_CIPHER_SUITE_TKIP; 7466 break; 7467 } 7468 wpa_printf(MSG_DEBUG, " * group=0x%x", cipher); 7469 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 7470 } 7471 7472#ifdef CONFIG_IEEE80211W 7473 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED) 7474 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED); 7475#endif /* CONFIG_IEEE80211W */ 7476 7477 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 7478 7479 if (params->prev_bssid) { 7480 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR, 7481 MAC2STR(params->prev_bssid)); 7482 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN, 7483 params->prev_bssid); 7484 } 7485 7486 if (params->disable_ht) 7487 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 7488 7489 if (params->htcaps && params->htcaps_mask) { 7490 int sz = sizeof(struct ieee80211_ht_capabilities); 7491 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 7492 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 7493 params->htcaps_mask); 7494 } 7495 7496#ifdef CONFIG_VHT_OVERRIDES 7497 if (params->disable_vht) { 7498 wpa_printf(MSG_DEBUG, " * VHT disabled"); 7499 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_VHT); 7500 } 7501 7502 if (params->vhtcaps && params->vhtcaps_mask) { 7503 int sz = sizeof(struct ieee80211_vht_capabilities); 7504 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, sz, params->vhtcaps); 7505 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz, 7506 params->vhtcaps_mask); 7507 } 7508#endif /* CONFIG_VHT_OVERRIDES */ 7509 7510 if (params->p2p) 7511 wpa_printf(MSG_DEBUG, " * P2P group"); 7512 7513 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7514 msg = NULL; 7515 if (ret) { 7516 wpa_dbg(drv->ctx, MSG_DEBUG, 7517 "nl80211: MLME command failed (assoc): ret=%d (%s)", 7518 ret, strerror(-ret)); 7519 nl80211_dump_scan(drv); 7520 goto nla_put_failure; 7521 } 7522 ret = 0; 7523 wpa_printf(MSG_DEBUG, "nl80211: Association request send " 7524 "successfully"); 7525 7526nla_put_failure: 7527 nlmsg_free(msg); 7528 return ret; 7529} 7530 7531 7532static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv, 7533 int ifindex, enum nl80211_iftype mode) 7534{ 7535 struct nl_msg *msg; 7536 int ret = -ENOBUFS; 7537 7538 wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)", 7539 ifindex, mode, nl80211_iftype_str(mode)); 7540 7541 msg = nlmsg_alloc(); 7542 if (!msg) 7543 return -ENOMEM; 7544 7545 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE); 7546 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 7547 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode); 7548 7549 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7550 msg = NULL; 7551 if (!ret) 7552 return 0; 7553nla_put_failure: 7554 nlmsg_free(msg); 7555 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:" 7556 " %d (%s)", ifindex, mode, ret, strerror(-ret)); 7557 return ret; 7558} 7559 7560 7561static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, 7562 enum nl80211_iftype nlmode) 7563{ 7564 struct wpa_driver_nl80211_data *drv = bss->drv; 7565 int ret = -1; 7566 int i; 7567 int was_ap = is_ap_interface(drv->nlmode); 7568 int res; 7569 7570 res = nl80211_set_mode(drv, drv->ifindex, nlmode); 7571 if (res == 0) { 7572 drv->nlmode = nlmode; 7573 ret = 0; 7574 goto done; 7575 } 7576 7577 if (res == -ENODEV) 7578 return -1; 7579 7580 if (nlmode == drv->nlmode) { 7581 wpa_printf(MSG_DEBUG, "nl80211: Interface already in " 7582 "requested mode - ignore error"); 7583 ret = 0; 7584 goto done; /* Already in the requested mode */ 7585 } 7586 7587 /* mac80211 doesn't allow mode changes while the device is up, so 7588 * take the device down, try to set the mode again, and bring the 7589 * device back up. 7590 */ 7591 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting " 7592 "interface down"); 7593 for (i = 0; i < 10; i++) { 7594 res = linux_set_iface_flags(drv->global->ioctl_sock, 7595 bss->ifname, 0); 7596 if (res == -EACCES || res == -ENODEV) 7597 break; 7598 if (res == 0) { 7599 /* Try to set the mode again while the interface is 7600 * down */ 7601 ret = nl80211_set_mode(drv, drv->ifindex, nlmode); 7602 if (ret == -EACCES) 7603 break; 7604 res = linux_set_iface_flags(drv->global->ioctl_sock, 7605 bss->ifname, 1); 7606 if (res && !ret) 7607 ret = -1; 7608 else if (ret != -EBUSY) 7609 break; 7610 } else 7611 wpa_printf(MSG_DEBUG, "nl80211: Failed to set " 7612 "interface down"); 7613 os_sleep(0, 100000); 7614 } 7615 7616 if (!ret) { 7617 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while " 7618 "interface is down"); 7619 drv->nlmode = nlmode; 7620 drv->ignore_if_down_event = 1; 7621 } 7622 7623done: 7624 if (ret) { 7625 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d " 7626 "from %d failed", nlmode, drv->nlmode); 7627 return ret; 7628 } 7629 7630 if (is_p2p_interface(nlmode)) 7631 nl80211_disable_11b_rates(drv, drv->ifindex, 1); 7632 else if (drv->disabled_11b_rates) 7633 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 7634 7635 if (is_ap_interface(nlmode)) { 7636 nl80211_mgmt_unsubscribe(bss, "start AP"); 7637 /* Setup additional AP mode functionality if needed */ 7638 if (nl80211_setup_ap(bss)) 7639 return -1; 7640 } else if (was_ap) { 7641 /* Remove additional AP mode functionality */ 7642 nl80211_teardown_ap(bss); 7643 } else { 7644 nl80211_mgmt_unsubscribe(bss, "mode change"); 7645 } 7646 7647 if (!bss->in_deinit && !is_ap_interface(nlmode) && 7648 nl80211_mgmt_subscribe_non_ap(bss) < 0) 7649 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action " 7650 "frame processing - ignore for now"); 7651 7652 return 0; 7653} 7654 7655 7656static int wpa_driver_nl80211_get_capa(void *priv, 7657 struct wpa_driver_capa *capa) 7658{ 7659 struct i802_bss *bss = priv; 7660 struct wpa_driver_nl80211_data *drv = bss->drv; 7661 if (!drv->has_capability) 7662 return -1; 7663 os_memcpy(capa, &drv->capa, sizeof(*capa)); 7664 if (drv->extended_capa && drv->extended_capa_mask) { 7665 capa->extended_capa = drv->extended_capa; 7666 capa->extended_capa_mask = drv->extended_capa_mask; 7667 capa->extended_capa_len = drv->extended_capa_len; 7668 } 7669 return 0; 7670} 7671 7672 7673static int wpa_driver_nl80211_set_operstate(void *priv, int state) 7674{ 7675 struct i802_bss *bss = priv; 7676 struct wpa_driver_nl80211_data *drv = bss->drv; 7677 7678 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)", 7679 __func__, drv->operstate, state, state ? "UP" : "DORMANT"); 7680 drv->operstate = state; 7681 return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1, 7682 state ? IF_OPER_UP : IF_OPER_DORMANT); 7683} 7684 7685 7686static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized) 7687{ 7688 struct i802_bss *bss = priv; 7689 struct wpa_driver_nl80211_data *drv = bss->drv; 7690 struct nl_msg *msg; 7691 struct nl80211_sta_flag_update upd; 7692 7693 msg = nlmsg_alloc(); 7694 if (!msg) 7695 return -ENOMEM; 7696 7697 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 7698 7699 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7700 if_nametoindex(bss->ifname)); 7701 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 7702 7703 os_memset(&upd, 0, sizeof(upd)); 7704 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED); 7705 if (authorized) 7706 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED); 7707 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 7708 7709 return send_and_recv_msgs(drv, msg, NULL, NULL); 7710 nla_put_failure: 7711 nlmsg_free(msg); 7712 return -ENOBUFS; 7713} 7714 7715 7716/* Set kernel driver on given frequency (MHz) */ 7717static int i802_set_freq(void *priv, struct hostapd_freq_params *freq) 7718{ 7719 struct i802_bss *bss = priv; 7720 return wpa_driver_nl80211_set_freq(bss, freq); 7721} 7722 7723 7724#if defined(HOSTAPD) || defined(CONFIG_AP) 7725 7726static inline int min_int(int a, int b) 7727{ 7728 if (a < b) 7729 return a; 7730 return b; 7731} 7732 7733 7734static int get_key_handler(struct nl_msg *msg, void *arg) 7735{ 7736 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7737 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7738 7739 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7740 genlmsg_attrlen(gnlh, 0), NULL); 7741 7742 /* 7743 * TODO: validate the key index and mac address! 7744 * Otherwise, there's a race condition as soon as 7745 * the kernel starts sending key notifications. 7746 */ 7747 7748 if (tb[NL80211_ATTR_KEY_SEQ]) 7749 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]), 7750 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6)); 7751 return NL_SKIP; 7752} 7753 7754 7755static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr, 7756 int idx, u8 *seq) 7757{ 7758 struct i802_bss *bss = priv; 7759 struct wpa_driver_nl80211_data *drv = bss->drv; 7760 struct nl_msg *msg; 7761 7762 msg = nlmsg_alloc(); 7763 if (!msg) 7764 return -ENOMEM; 7765 7766 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY); 7767 7768 if (addr) 7769 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7770 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx); 7771 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface)); 7772 7773 memset(seq, 0, 6); 7774 7775 return send_and_recv_msgs(drv, msg, get_key_handler, seq); 7776 nla_put_failure: 7777 nlmsg_free(msg); 7778 return -ENOBUFS; 7779} 7780 7781 7782static int i802_set_rts(void *priv, int rts) 7783{ 7784 struct i802_bss *bss = priv; 7785 struct wpa_driver_nl80211_data *drv = bss->drv; 7786 struct nl_msg *msg; 7787 int ret = -ENOBUFS; 7788 u32 val; 7789 7790 msg = nlmsg_alloc(); 7791 if (!msg) 7792 return -ENOMEM; 7793 7794 if (rts >= 2347) 7795 val = (u32) -1; 7796 else 7797 val = rts; 7798 7799 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7800 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7801 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val); 7802 7803 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7804 msg = NULL; 7805 if (!ret) 7806 return 0; 7807nla_put_failure: 7808 nlmsg_free(msg); 7809 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: " 7810 "%d (%s)", rts, ret, strerror(-ret)); 7811 return ret; 7812} 7813 7814 7815static int i802_set_frag(void *priv, int frag) 7816{ 7817 struct i802_bss *bss = priv; 7818 struct wpa_driver_nl80211_data *drv = bss->drv; 7819 struct nl_msg *msg; 7820 int ret = -ENOBUFS; 7821 u32 val; 7822 7823 msg = nlmsg_alloc(); 7824 if (!msg) 7825 return -ENOMEM; 7826 7827 if (frag >= 2346) 7828 val = (u32) -1; 7829 else 7830 val = frag; 7831 7832 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7833 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7834 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val); 7835 7836 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7837 msg = NULL; 7838 if (!ret) 7839 return 0; 7840nla_put_failure: 7841 nlmsg_free(msg); 7842 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold " 7843 "%d: %d (%s)", frag, ret, strerror(-ret)); 7844 return ret; 7845} 7846 7847 7848static int i802_flush(void *priv) 7849{ 7850 struct i802_bss *bss = priv; 7851 struct wpa_driver_nl80211_data *drv = bss->drv; 7852 struct nl_msg *msg; 7853 int res; 7854 7855 msg = nlmsg_alloc(); 7856 if (!msg) 7857 return -1; 7858 7859 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 7860 7861 /* 7862 * XXX: FIX! this needs to flush all VLANs too 7863 */ 7864 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7865 if_nametoindex(bss->ifname)); 7866 7867 res = send_and_recv_msgs(drv, msg, NULL, NULL); 7868 if (res) { 7869 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d " 7870 "(%s)", res, strerror(-res)); 7871 } 7872 return res; 7873 nla_put_failure: 7874 nlmsg_free(msg); 7875 return -ENOBUFS; 7876} 7877 7878#endif /* HOSTAPD || CONFIG_AP */ 7879 7880 7881static int get_sta_handler(struct nl_msg *msg, void *arg) 7882{ 7883 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7884 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7885 struct hostap_sta_driver_data *data = arg; 7886 struct nlattr *stats[NL80211_STA_INFO_MAX + 1]; 7887 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = { 7888 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 }, 7889 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 }, 7890 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 }, 7891 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 }, 7892 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 }, 7893 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 }, 7894 }; 7895 7896 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7897 genlmsg_attrlen(gnlh, 0), NULL); 7898 7899 /* 7900 * TODO: validate the interface and mac address! 7901 * Otherwise, there's a race condition as soon as 7902 * the kernel starts sending station notifications. 7903 */ 7904 7905 if (!tb[NL80211_ATTR_STA_INFO]) { 7906 wpa_printf(MSG_DEBUG, "sta stats missing!"); 7907 return NL_SKIP; 7908 } 7909 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX, 7910 tb[NL80211_ATTR_STA_INFO], 7911 stats_policy)) { 7912 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!"); 7913 return NL_SKIP; 7914 } 7915 7916 if (stats[NL80211_STA_INFO_INACTIVE_TIME]) 7917 data->inactive_msec = 7918 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]); 7919 if (stats[NL80211_STA_INFO_RX_BYTES]) 7920 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]); 7921 if (stats[NL80211_STA_INFO_TX_BYTES]) 7922 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]); 7923 if (stats[NL80211_STA_INFO_RX_PACKETS]) 7924 data->rx_packets = 7925 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]); 7926 if (stats[NL80211_STA_INFO_TX_PACKETS]) 7927 data->tx_packets = 7928 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]); 7929 if (stats[NL80211_STA_INFO_TX_FAILED]) 7930 data->tx_retry_failed = 7931 nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]); 7932 7933 return NL_SKIP; 7934} 7935 7936static int i802_read_sta_data(struct i802_bss *bss, 7937 struct hostap_sta_driver_data *data, 7938 const u8 *addr) 7939{ 7940 struct wpa_driver_nl80211_data *drv = bss->drv; 7941 struct nl_msg *msg; 7942 7943 os_memset(data, 0, sizeof(*data)); 7944 msg = nlmsg_alloc(); 7945 if (!msg) 7946 return -ENOMEM; 7947 7948 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 7949 7950 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7951 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 7952 7953 return send_and_recv_msgs(drv, msg, get_sta_handler, data); 7954 nla_put_failure: 7955 nlmsg_free(msg); 7956 return -ENOBUFS; 7957} 7958 7959 7960#if defined(HOSTAPD) || defined(CONFIG_AP) 7961 7962static int i802_set_tx_queue_params(void *priv, int queue, int aifs, 7963 int cw_min, int cw_max, int burst_time) 7964{ 7965 struct i802_bss *bss = priv; 7966 struct wpa_driver_nl80211_data *drv = bss->drv; 7967 struct nl_msg *msg; 7968 struct nlattr *txq, *params; 7969 7970 msg = nlmsg_alloc(); 7971 if (!msg) 7972 return -1; 7973 7974 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7975 7976 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 7977 7978 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS); 7979 if (!txq) 7980 goto nla_put_failure; 7981 7982 /* We are only sending parameters for a single TXQ at a time */ 7983 params = nla_nest_start(msg, 1); 7984 if (!params) 7985 goto nla_put_failure; 7986 7987 switch (queue) { 7988 case 0: 7989 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO); 7990 break; 7991 case 1: 7992 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI); 7993 break; 7994 case 2: 7995 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE); 7996 break; 7997 case 3: 7998 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK); 7999 break; 8000 } 8001 /* Burst time is configured in units of 0.1 msec and TXOP parameter in 8002 * 32 usec, so need to convert the value here. */ 8003 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32); 8004 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min); 8005 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max); 8006 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs); 8007 8008 nla_nest_end(msg, params); 8009 8010 nla_nest_end(msg, txq); 8011 8012 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 8013 return 0; 8014 msg = NULL; 8015 nla_put_failure: 8016 nlmsg_free(msg); 8017 return -1; 8018} 8019 8020 8021static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr, 8022 const char *ifname, int vlan_id) 8023{ 8024 struct wpa_driver_nl80211_data *drv = bss->drv; 8025 struct nl_msg *msg; 8026 int ret = -ENOBUFS; 8027 8028 msg = nlmsg_alloc(); 8029 if (!msg) 8030 return -ENOMEM; 8031 8032 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 8033 8034 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 8035 if_nametoindex(bss->ifname)); 8036 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 8037 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN, 8038 if_nametoindex(ifname)); 8039 8040 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8041 msg = NULL; 8042 if (ret < 0) { 8043 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr=" 8044 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)", 8045 MAC2STR(addr), ifname, vlan_id, ret, 8046 strerror(-ret)); 8047 } 8048 nla_put_failure: 8049 nlmsg_free(msg); 8050 return ret; 8051} 8052 8053 8054static int i802_get_inact_sec(void *priv, const u8 *addr) 8055{ 8056 struct hostap_sta_driver_data data; 8057 int ret; 8058 8059 data.inactive_msec = (unsigned long) -1; 8060 ret = i802_read_sta_data(priv, &data, addr); 8061 if (ret || data.inactive_msec == (unsigned long) -1) 8062 return -1; 8063 return data.inactive_msec / 1000; 8064} 8065 8066 8067static int i802_sta_clear_stats(void *priv, const u8 *addr) 8068{ 8069#if 0 8070 /* TODO */ 8071#endif 8072 return 0; 8073} 8074 8075 8076static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, 8077 int reason) 8078{ 8079 struct i802_bss *bss = priv; 8080 struct wpa_driver_nl80211_data *drv = bss->drv; 8081 struct ieee80211_mgmt mgmt; 8082 8083 if (drv->device_ap_sme) 8084 return wpa_driver_nl80211_sta_remove(bss, addr); 8085 8086 memset(&mgmt, 0, sizeof(mgmt)); 8087 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 8088 WLAN_FC_STYPE_DEAUTH); 8089 memcpy(mgmt.da, addr, ETH_ALEN); 8090 memcpy(mgmt.sa, own_addr, ETH_ALEN); 8091 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 8092 mgmt.u.deauth.reason_code = host_to_le16(reason); 8093 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 8094 IEEE80211_HDRLEN + 8095 sizeof(mgmt.u.deauth), 0, 0, 0, 0, 8096 0); 8097} 8098 8099 8100static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr, 8101 int reason) 8102{ 8103 struct i802_bss *bss = priv; 8104 struct wpa_driver_nl80211_data *drv = bss->drv; 8105 struct ieee80211_mgmt mgmt; 8106 8107 if (drv->device_ap_sme) 8108 return wpa_driver_nl80211_sta_remove(bss, addr); 8109 8110 memset(&mgmt, 0, sizeof(mgmt)); 8111 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 8112 WLAN_FC_STYPE_DISASSOC); 8113 memcpy(mgmt.da, addr, ETH_ALEN); 8114 memcpy(mgmt.sa, own_addr, ETH_ALEN); 8115 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 8116 mgmt.u.disassoc.reason_code = host_to_le16(reason); 8117 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 8118 IEEE80211_HDRLEN + 8119 sizeof(mgmt.u.disassoc), 0, 0, 0, 0, 8120 0); 8121} 8122 8123#endif /* HOSTAPD || CONFIG_AP */ 8124 8125#ifdef HOSTAPD 8126 8127static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 8128{ 8129 int i; 8130 int *old; 8131 8132 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d", 8133 ifidx); 8134 for (i = 0; i < drv->num_if_indices; i++) { 8135 if (drv->if_indices[i] == 0) { 8136 drv->if_indices[i] = ifidx; 8137 return; 8138 } 8139 } 8140 8141 if (drv->if_indices != drv->default_if_indices) 8142 old = drv->if_indices; 8143 else 8144 old = NULL; 8145 8146 drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1, 8147 sizeof(int)); 8148 if (!drv->if_indices) { 8149 if (!old) 8150 drv->if_indices = drv->default_if_indices; 8151 else 8152 drv->if_indices = old; 8153 wpa_printf(MSG_ERROR, "Failed to reallocate memory for " 8154 "interfaces"); 8155 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx); 8156 return; 8157 } else if (!old) 8158 os_memcpy(drv->if_indices, drv->default_if_indices, 8159 sizeof(drv->default_if_indices)); 8160 drv->if_indices[drv->num_if_indices] = ifidx; 8161 drv->num_if_indices++; 8162} 8163 8164 8165static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 8166{ 8167 int i; 8168 8169 for (i = 0; i < drv->num_if_indices; i++) { 8170 if (drv->if_indices[i] == ifidx) { 8171 drv->if_indices[i] = 0; 8172 break; 8173 } 8174 } 8175} 8176 8177 8178static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 8179{ 8180 int i; 8181 8182 for (i = 0; i < drv->num_if_indices; i++) 8183 if (drv->if_indices[i] == ifidx) 8184 return 1; 8185 8186 return 0; 8187} 8188 8189 8190static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val, 8191 const char *bridge_ifname) 8192{ 8193 struct i802_bss *bss = priv; 8194 struct wpa_driver_nl80211_data *drv = bss->drv; 8195 char name[IFNAMSIZ + 1]; 8196 8197 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid); 8198 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR 8199 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name); 8200 if (val) { 8201 if (!if_nametoindex(name)) { 8202 if (nl80211_create_iface(drv, name, 8203 NL80211_IFTYPE_AP_VLAN, 8204 bss->addr, 1) < 0) 8205 return -1; 8206 if (bridge_ifname && 8207 linux_br_add_if(drv->global->ioctl_sock, 8208 bridge_ifname, name) < 0) 8209 return -1; 8210 } 8211 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) { 8212 wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA " 8213 "interface %s up", name); 8214 } 8215 return i802_set_sta_vlan(priv, addr, name, 0); 8216 } else { 8217 if (bridge_ifname) 8218 linux_br_del_if(drv->global->ioctl_sock, bridge_ifname, 8219 name); 8220 8221 i802_set_sta_vlan(priv, addr, bss->ifname, 0); 8222 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN, 8223 name); 8224 } 8225} 8226 8227 8228static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx) 8229{ 8230 struct wpa_driver_nl80211_data *drv = eloop_ctx; 8231 struct sockaddr_ll lladdr; 8232 unsigned char buf[3000]; 8233 int len; 8234 socklen_t fromlen = sizeof(lladdr); 8235 8236 len = recvfrom(sock, buf, sizeof(buf), 0, 8237 (struct sockaddr *)&lladdr, &fromlen); 8238 if (len < 0) { 8239 perror("recv"); 8240 return; 8241 } 8242 8243 if (have_ifidx(drv, lladdr.sll_ifindex)) 8244 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len); 8245} 8246 8247 8248static int i802_check_bridge(struct wpa_driver_nl80211_data *drv, 8249 struct i802_bss *bss, 8250 const char *brname, const char *ifname) 8251{ 8252 int ifindex; 8253 char in_br[IFNAMSIZ]; 8254 8255 os_strlcpy(bss->brname, brname, IFNAMSIZ); 8256 ifindex = if_nametoindex(brname); 8257 if (ifindex == 0) { 8258 /* 8259 * Bridge was configured, but the bridge device does 8260 * not exist. Try to add it now. 8261 */ 8262 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) { 8263 wpa_printf(MSG_ERROR, "nl80211: Failed to add the " 8264 "bridge interface %s: %s", 8265 brname, strerror(errno)); 8266 return -1; 8267 } 8268 bss->added_bridge = 1; 8269 add_ifidx(drv, if_nametoindex(brname)); 8270 } 8271 8272 if (linux_br_get(in_br, ifname) == 0) { 8273 if (os_strcmp(in_br, brname) == 0) 8274 return 0; /* already in the bridge */ 8275 8276 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from " 8277 "bridge %s", ifname, in_br); 8278 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) < 8279 0) { 8280 wpa_printf(MSG_ERROR, "nl80211: Failed to " 8281 "remove interface %s from bridge " 8282 "%s: %s", 8283 ifname, brname, strerror(errno)); 8284 return -1; 8285 } 8286 } 8287 8288 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s", 8289 ifname, brname); 8290 if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) { 8291 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s " 8292 "into bridge %s: %s", 8293 ifname, brname, strerror(errno)); 8294 return -1; 8295 } 8296 bss->added_if_into_bridge = 1; 8297 8298 return 0; 8299} 8300 8301 8302static void *i802_init(struct hostapd_data *hapd, 8303 struct wpa_init_params *params) 8304{ 8305 struct wpa_driver_nl80211_data *drv; 8306 struct i802_bss *bss; 8307 size_t i; 8308 char brname[IFNAMSIZ]; 8309 int ifindex, br_ifindex; 8310 int br_added = 0; 8311 8312 bss = wpa_driver_nl80211_init(hapd, params->ifname, 8313 params->global_priv); 8314 if (bss == NULL) 8315 return NULL; 8316 8317 drv = bss->drv; 8318 drv->nlmode = NL80211_IFTYPE_AP; 8319 drv->eapol_sock = -1; 8320 8321 if (linux_br_get(brname, params->ifname) == 0) { 8322 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s", 8323 params->ifname, brname); 8324 br_ifindex = if_nametoindex(brname); 8325 } else { 8326 brname[0] = '\0'; 8327 br_ifindex = 0; 8328 } 8329 8330 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int); 8331 drv->if_indices = drv->default_if_indices; 8332 for (i = 0; i < params->num_bridge; i++) { 8333 if (params->bridge[i]) { 8334 ifindex = if_nametoindex(params->bridge[i]); 8335 if (ifindex) 8336 add_ifidx(drv, ifindex); 8337 if (ifindex == br_ifindex) 8338 br_added = 1; 8339 } 8340 } 8341 if (!br_added && br_ifindex && 8342 (params->num_bridge == 0 || !params->bridge[0])) 8343 add_ifidx(drv, br_ifindex); 8344 8345 /* start listening for EAPOL on the default AP interface */ 8346 add_ifidx(drv, drv->ifindex); 8347 8348 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0)) 8349 goto failed; 8350 8351 if (params->bssid) { 8352 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8353 params->bssid)) 8354 goto failed; 8355 } 8356 8357 if (wpa_driver_nl80211_set_mode(bss, drv->nlmode)) { 8358 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s " 8359 "into AP mode", bss->ifname); 8360 goto failed; 8361 } 8362 8363 if (params->num_bridge && params->bridge[0] && 8364 i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0) 8365 goto failed; 8366 8367 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) 8368 goto failed; 8369 8370 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE)); 8371 if (drv->eapol_sock < 0) { 8372 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)"); 8373 goto failed; 8374 } 8375 8376 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL)) 8377 { 8378 printf("Could not register read socket for eapol\n"); 8379 goto failed; 8380 } 8381 8382 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8383 params->own_addr)) 8384 goto failed; 8385 8386 memcpy(bss->addr, params->own_addr, ETH_ALEN); 8387 8388 return bss; 8389 8390failed: 8391 wpa_driver_nl80211_deinit(bss); 8392 return NULL; 8393} 8394 8395 8396static void i802_deinit(void *priv) 8397{ 8398 struct i802_bss *bss = priv; 8399 wpa_driver_nl80211_deinit(bss); 8400} 8401 8402#endif /* HOSTAPD */ 8403 8404 8405static enum nl80211_iftype wpa_driver_nl80211_if_type( 8406 enum wpa_driver_if_type type) 8407{ 8408 switch (type) { 8409 case WPA_IF_STATION: 8410 return NL80211_IFTYPE_STATION; 8411 case WPA_IF_P2P_CLIENT: 8412 case WPA_IF_P2P_GROUP: 8413 return NL80211_IFTYPE_P2P_CLIENT; 8414 case WPA_IF_AP_VLAN: 8415 return NL80211_IFTYPE_AP_VLAN; 8416 case WPA_IF_AP_BSS: 8417 return NL80211_IFTYPE_AP; 8418 case WPA_IF_P2P_GO: 8419 return NL80211_IFTYPE_P2P_GO; 8420 } 8421 return -1; 8422} 8423 8424 8425#ifdef CONFIG_P2P 8426 8427static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr) 8428{ 8429 struct wpa_driver_nl80211_data *drv; 8430 dl_list_for_each(drv, &global->interfaces, 8431 struct wpa_driver_nl80211_data, list) { 8432 if (os_memcmp(addr, drv->first_bss.addr, ETH_ALEN) == 0) 8433 return 1; 8434 } 8435 return 0; 8436} 8437 8438 8439static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv, 8440 u8 *new_addr) 8441{ 8442 unsigned int idx; 8443 8444 if (!drv->global) 8445 return -1; 8446 8447 os_memcpy(new_addr, drv->first_bss.addr, ETH_ALEN); 8448 for (idx = 0; idx < 64; idx++) { 8449 new_addr[0] = drv->first_bss.addr[0] | 0x02; 8450 new_addr[0] ^= idx << 2; 8451 if (!nl80211_addr_in_use(drv->global, new_addr)) 8452 break; 8453 } 8454 if (idx == 64) 8455 return -1; 8456 8457 wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address " 8458 MACSTR, MAC2STR(new_addr)); 8459 8460 return 0; 8461} 8462 8463#endif /* CONFIG_P2P */ 8464 8465 8466static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type, 8467 const char *ifname, const u8 *addr, 8468 void *bss_ctx, void **drv_priv, 8469 char *force_ifname, u8 *if_addr, 8470 const char *bridge) 8471{ 8472 struct i802_bss *bss = priv; 8473 struct wpa_driver_nl80211_data *drv = bss->drv; 8474 int ifidx; 8475#ifdef HOSTAPD 8476 struct i802_bss *new_bss = NULL; 8477 8478 if (type == WPA_IF_AP_BSS) { 8479 new_bss = os_zalloc(sizeof(*new_bss)); 8480 if (new_bss == NULL) 8481 return -1; 8482 } 8483#endif /* HOSTAPD */ 8484 8485 if (addr) 8486 os_memcpy(if_addr, addr, ETH_ALEN); 8487 ifidx = nl80211_create_iface(drv, ifname, 8488 wpa_driver_nl80211_if_type(type), addr, 8489 0); 8490 if (ifidx < 0) { 8491#ifdef HOSTAPD 8492 os_free(new_bss); 8493#endif /* HOSTAPD */ 8494 return -1; 8495 } 8496 8497 if (!addr && 8498 linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8499 if_addr) < 0) { 8500 nl80211_remove_iface(drv, ifidx); 8501 return -1; 8502 } 8503 8504#ifdef CONFIG_P2P 8505 if (!addr && 8506 (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP || 8507 type == WPA_IF_P2P_GO)) { 8508 /* Enforce unique P2P Interface Address */ 8509 u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN]; 8510 8511 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8512 own_addr) < 0 || 8513 linux_get_ifhwaddr(drv->global->ioctl_sock, ifname, 8514 new_addr) < 0) { 8515 nl80211_remove_iface(drv, ifidx); 8516 return -1; 8517 } 8518 if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) { 8519 wpa_printf(MSG_DEBUG, "nl80211: Allocate new address " 8520 "for P2P group interface"); 8521 if (nl80211_p2p_interface_addr(drv, new_addr) < 0) { 8522 nl80211_remove_iface(drv, ifidx); 8523 return -1; 8524 } 8525 if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, 8526 new_addr) < 0) { 8527 nl80211_remove_iface(drv, ifidx); 8528 return -1; 8529 } 8530 } 8531 os_memcpy(if_addr, new_addr, ETH_ALEN); 8532 } 8533#endif /* CONFIG_P2P */ 8534 8535#ifdef HOSTAPD 8536 if (bridge && 8537 i802_check_bridge(drv, new_bss, bridge, ifname) < 0) { 8538 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new " 8539 "interface %s to a bridge %s", ifname, bridge); 8540 nl80211_remove_iface(drv, ifidx); 8541 os_free(new_bss); 8542 return -1; 8543 } 8544 8545 if (type == WPA_IF_AP_BSS) { 8546 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1)) 8547 { 8548 nl80211_remove_iface(drv, ifidx); 8549 os_free(new_bss); 8550 return -1; 8551 } 8552 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ); 8553 os_memcpy(new_bss->addr, if_addr, ETH_ALEN); 8554 new_bss->ifindex = ifidx; 8555 new_bss->drv = drv; 8556 new_bss->next = drv->first_bss.next; 8557 new_bss->freq = drv->first_bss.freq; 8558 new_bss->ctx = bss_ctx; 8559 drv->first_bss.next = new_bss; 8560 if (drv_priv) 8561 *drv_priv = new_bss; 8562 nl80211_init_bss(new_bss); 8563 8564 /* Subscribe management frames for this WPA_IF_AP_BSS */ 8565 if (nl80211_setup_ap(new_bss)) 8566 return -1; 8567 } 8568#endif /* HOSTAPD */ 8569 8570 if (drv->global) 8571 drv->global->if_add_ifindex = ifidx; 8572 8573 return 0; 8574} 8575 8576 8577static int wpa_driver_nl80211_if_remove(struct i802_bss *bss, 8578 enum wpa_driver_if_type type, 8579 const char *ifname) 8580{ 8581 struct wpa_driver_nl80211_data *drv = bss->drv; 8582 int ifindex = if_nametoindex(ifname); 8583 8584 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d", 8585 __func__, type, ifname, ifindex); 8586 if (ifindex <= 0) 8587 return -1; 8588 8589 nl80211_remove_iface(drv, ifindex); 8590 8591#ifdef HOSTAPD 8592 if (type != WPA_IF_AP_BSS) 8593 return 0; 8594 8595 if (bss->added_if_into_bridge) { 8596 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 8597 bss->ifname) < 0) 8598 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 8599 "interface %s from bridge %s: %s", 8600 bss->ifname, bss->brname, strerror(errno)); 8601 } 8602 if (bss->added_bridge) { 8603 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 8604 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 8605 "bridge %s: %s", 8606 bss->brname, strerror(errno)); 8607 } 8608 8609 if (bss != &drv->first_bss) { 8610 struct i802_bss *tbss; 8611 8612 for (tbss = &drv->first_bss; tbss; tbss = tbss->next) { 8613 if (tbss->next == bss) { 8614 tbss->next = bss->next; 8615 /* Unsubscribe management frames */ 8616 nl80211_teardown_ap(bss); 8617 nl80211_destroy_bss(bss); 8618 os_free(bss); 8619 bss = NULL; 8620 break; 8621 } 8622 } 8623 if (bss) 8624 wpa_printf(MSG_INFO, "nl80211: %s - could not find " 8625 "BSS %p in the list", __func__, bss); 8626 } 8627#endif /* HOSTAPD */ 8628 8629 return 0; 8630} 8631 8632 8633static int cookie_handler(struct nl_msg *msg, void *arg) 8634{ 8635 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 8636 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 8637 u64 *cookie = arg; 8638 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 8639 genlmsg_attrlen(gnlh, 0), NULL); 8640 if (tb[NL80211_ATTR_COOKIE]) 8641 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 8642 return NL_SKIP; 8643} 8644 8645 8646static int nl80211_send_frame_cmd(struct i802_bss *bss, 8647 unsigned int freq, unsigned int wait, 8648 const u8 *buf, size_t buf_len, 8649 u64 *cookie_out, int no_cck, int no_ack, 8650 int offchanok) 8651{ 8652 struct wpa_driver_nl80211_data *drv = bss->drv; 8653 struct nl_msg *msg; 8654 u64 cookie; 8655 int ret = -1; 8656 8657 msg = nlmsg_alloc(); 8658 if (!msg) 8659 return -1; 8660 8661 wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d " 8662 "no_ack=%d offchanok=%d", 8663 freq, wait, no_cck, no_ack, offchanok); 8664 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME); 8665 8666 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8667 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 8668 if (wait) 8669 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait); 8670 if (offchanok && (drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX)) 8671 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK); 8672 if (no_cck) 8673 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 8674 if (no_ack) 8675 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK); 8676 8677 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf); 8678 8679 cookie = 0; 8680 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 8681 msg = NULL; 8682 if (ret) { 8683 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d " 8684 "(%s) (freq=%u wait=%u)", ret, strerror(-ret), 8685 freq, wait); 8686 goto nla_put_failure; 8687 } 8688 wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; " 8689 "cookie 0x%llx", no_ack ? " (no ACK)" : "", 8690 (long long unsigned int) cookie); 8691 8692 if (cookie_out) 8693 *cookie_out = no_ack ? (u64) -1 : cookie; 8694 8695nla_put_failure: 8696 nlmsg_free(msg); 8697 return ret; 8698} 8699 8700 8701static int wpa_driver_nl80211_send_action(struct i802_bss *bss, 8702 unsigned int freq, 8703 unsigned int wait_time, 8704 const u8 *dst, const u8 *src, 8705 const u8 *bssid, 8706 const u8 *data, size_t data_len, 8707 int no_cck) 8708{ 8709 struct wpa_driver_nl80211_data *drv = bss->drv; 8710 int ret = -1; 8711 u8 *buf; 8712 struct ieee80211_hdr *hdr; 8713 8714 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, " 8715 "freq=%u MHz wait=%d ms no_cck=%d)", 8716 drv->ifindex, freq, wait_time, no_cck); 8717 8718 buf = os_zalloc(24 + data_len); 8719 if (buf == NULL) 8720 return ret; 8721 os_memcpy(buf + 24, data, data_len); 8722 hdr = (struct ieee80211_hdr *) buf; 8723 hdr->frame_control = 8724 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION); 8725 os_memcpy(hdr->addr1, dst, ETH_ALEN); 8726 os_memcpy(hdr->addr2, src, ETH_ALEN); 8727 os_memcpy(hdr->addr3, bssid, ETH_ALEN); 8728 8729 if (is_ap_interface(drv->nlmode)) 8730 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len, 8731 0, freq, no_cck, 1, 8732 wait_time); 8733 else 8734 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf, 8735 24 + data_len, 8736 &drv->send_action_cookie, 8737 no_cck, 0, 1); 8738 8739 os_free(buf); 8740 return ret; 8741} 8742 8743 8744static void wpa_driver_nl80211_send_action_cancel_wait(void *priv) 8745{ 8746 struct i802_bss *bss = priv; 8747 struct wpa_driver_nl80211_data *drv = bss->drv; 8748 struct nl_msg *msg; 8749 int ret; 8750 8751 msg = nlmsg_alloc(); 8752 if (!msg) 8753 return; 8754 8755 wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx", 8756 (long long unsigned int) drv->send_action_cookie); 8757 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL); 8758 8759 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8760 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie); 8761 8762 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8763 msg = NULL; 8764 if (ret) 8765 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d " 8766 "(%s)", ret, strerror(-ret)); 8767 8768 nla_put_failure: 8769 nlmsg_free(msg); 8770} 8771 8772 8773static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq, 8774 unsigned int duration) 8775{ 8776 struct i802_bss *bss = priv; 8777 struct wpa_driver_nl80211_data *drv = bss->drv; 8778 struct nl_msg *msg; 8779 int ret; 8780 u64 cookie; 8781 8782 msg = nlmsg_alloc(); 8783 if (!msg) 8784 return -1; 8785 8786 nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL); 8787 8788 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8789 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 8790 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration); 8791 8792 cookie = 0; 8793 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 8794 msg = NULL; 8795 if (ret == 0) { 8796 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie " 8797 "0x%llx for freq=%u MHz duration=%u", 8798 (long long unsigned int) cookie, freq, duration); 8799 drv->remain_on_chan_cookie = cookie; 8800 drv->pending_remain_on_chan = 1; 8801 return 0; 8802 } 8803 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel " 8804 "(freq=%d duration=%u): %d (%s)", 8805 freq, duration, ret, strerror(-ret)); 8806nla_put_failure: 8807 nlmsg_free(msg); 8808 return -1; 8809} 8810 8811 8812static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv) 8813{ 8814 struct i802_bss *bss = priv; 8815 struct wpa_driver_nl80211_data *drv = bss->drv; 8816 struct nl_msg *msg; 8817 int ret; 8818 8819 if (!drv->pending_remain_on_chan) { 8820 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel " 8821 "to cancel"); 8822 return -1; 8823 } 8824 8825 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie " 8826 "0x%llx", 8827 (long long unsigned int) drv->remain_on_chan_cookie); 8828 8829 msg = nlmsg_alloc(); 8830 if (!msg) 8831 return -1; 8832 8833 nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL); 8834 8835 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8836 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie); 8837 8838 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8839 msg = NULL; 8840 if (ret == 0) 8841 return 0; 8842 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: " 8843 "%d (%s)", ret, strerror(-ret)); 8844nla_put_failure: 8845 nlmsg_free(msg); 8846 return -1; 8847} 8848 8849 8850static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report) 8851{ 8852 struct wpa_driver_nl80211_data *drv = bss->drv; 8853 8854 if (!report) { 8855 if (bss->nl_preq && drv->device_ap_sme && 8856 is_ap_interface(drv->nlmode)) { 8857 /* 8858 * Do not disable Probe Request reporting that was 8859 * enabled in nl80211_setup_ap(). 8860 */ 8861 wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of " 8862 "Probe Request reporting nl_preq=%p while " 8863 "in AP mode", bss->nl_preq); 8864 } else if (bss->nl_preq) { 8865 wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request " 8866 "reporting nl_preq=%p", bss->nl_preq); 8867 eloop_unregister_read_sock( 8868 nl_socket_get_fd(bss->nl_preq)); 8869 nl_destroy_handles(&bss->nl_preq); 8870 } 8871 return 0; 8872 } 8873 8874 if (bss->nl_preq) { 8875 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting " 8876 "already on! nl_preq=%p", bss->nl_preq); 8877 return 0; 8878 } 8879 8880 bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq"); 8881 if (bss->nl_preq == NULL) 8882 return -1; 8883 wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request " 8884 "reporting nl_preq=%p", bss->nl_preq); 8885 8886 if (nl80211_register_frame(bss, bss->nl_preq, 8887 (WLAN_FC_TYPE_MGMT << 2) | 8888 (WLAN_FC_STYPE_PROBE_REQ << 4), 8889 NULL, 0) < 0) 8890 goto out_err; 8891 8892 eloop_register_read_sock(nl_socket_get_fd(bss->nl_preq), 8893 wpa_driver_nl80211_event_receive, bss->nl_cb, 8894 bss->nl_preq); 8895 8896 return 0; 8897 8898 out_err: 8899 nl_destroy_handles(&bss->nl_preq); 8900 return -1; 8901} 8902 8903 8904static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 8905 int ifindex, int disabled) 8906{ 8907 struct nl_msg *msg; 8908 struct nlattr *bands, *band; 8909 int ret; 8910 8911 msg = nlmsg_alloc(); 8912 if (!msg) 8913 return -1; 8914 8915 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK); 8916 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 8917 8918 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES); 8919 if (!bands) 8920 goto nla_put_failure; 8921 8922 /* 8923 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything 8924 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS 8925 * rates. All 5 GHz rates are left enabled. 8926 */ 8927 band = nla_nest_start(msg, NL80211_BAND_2GHZ); 8928 if (!band) 8929 goto nla_put_failure; 8930 if (disabled) { 8931 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8, 8932 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 8933 } 8934 nla_nest_end(msg, band); 8935 8936 nla_nest_end(msg, bands); 8937 8938 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8939 msg = NULL; 8940 if (ret) { 8941 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d " 8942 "(%s)", ret, strerror(-ret)); 8943 } else 8944 drv->disabled_11b_rates = disabled; 8945 8946 return ret; 8947 8948nla_put_failure: 8949 nlmsg_free(msg); 8950 return -1; 8951} 8952 8953 8954static int wpa_driver_nl80211_deinit_ap(void *priv) 8955{ 8956 struct i802_bss *bss = priv; 8957 struct wpa_driver_nl80211_data *drv = bss->drv; 8958 if (!is_ap_interface(drv->nlmode)) 8959 return -1; 8960 wpa_driver_nl80211_del_beacon(drv); 8961 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 8962} 8963 8964 8965static int wpa_driver_nl80211_deinit_p2p_cli(void *priv) 8966{ 8967 struct i802_bss *bss = priv; 8968 struct wpa_driver_nl80211_data *drv = bss->drv; 8969 if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT) 8970 return -1; 8971 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 8972} 8973 8974 8975static void wpa_driver_nl80211_resume(void *priv) 8976{ 8977 struct i802_bss *bss = priv; 8978 struct wpa_driver_nl80211_data *drv = bss->drv; 8979 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { 8980 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on " 8981 "resume event"); 8982 } 8983} 8984 8985 8986static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap, 8987 const u8 *ies, size_t ies_len) 8988{ 8989 struct i802_bss *bss = priv; 8990 struct wpa_driver_nl80211_data *drv = bss->drv; 8991 int ret; 8992 u8 *data, *pos; 8993 size_t data_len; 8994 const u8 *own_addr = bss->addr; 8995 8996 if (action != 1) { 8997 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action " 8998 "action %d", action); 8999 return -1; 9000 } 9001 9002 /* 9003 * Action frame payload: 9004 * Category[1] = 6 (Fast BSS Transition) 9005 * Action[1] = 1 (Fast BSS Transition Request) 9006 * STA Address 9007 * Target AP Address 9008 * FT IEs 9009 */ 9010 9011 data_len = 2 + 2 * ETH_ALEN + ies_len; 9012 data = os_malloc(data_len); 9013 if (data == NULL) 9014 return -1; 9015 pos = data; 9016 *pos++ = 0x06; /* FT Action category */ 9017 *pos++ = action; 9018 os_memcpy(pos, own_addr, ETH_ALEN); 9019 pos += ETH_ALEN; 9020 os_memcpy(pos, target_ap, ETH_ALEN); 9021 pos += ETH_ALEN; 9022 os_memcpy(pos, ies, ies_len); 9023 9024 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0, 9025 drv->bssid, own_addr, drv->bssid, 9026 data, data_len, 0); 9027 os_free(data); 9028 9029 return ret; 9030} 9031 9032 9033static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis) 9034{ 9035 struct i802_bss *bss = priv; 9036 struct wpa_driver_nl80211_data *drv = bss->drv; 9037 struct nl_msg *msg; 9038 struct nlattr *cqm; 9039 int ret = -1; 9040 9041 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d " 9042 "hysteresis=%d", threshold, hysteresis); 9043 9044 msg = nlmsg_alloc(); 9045 if (!msg) 9046 return -1; 9047 9048 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM); 9049 9050 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9051 9052 cqm = nla_nest_start(msg, NL80211_ATTR_CQM); 9053 if (cqm == NULL) 9054 goto nla_put_failure; 9055 9056 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold); 9057 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis); 9058 nla_nest_end(msg, cqm); 9059 9060 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 9061 msg = NULL; 9062 9063nla_put_failure: 9064 nlmsg_free(msg); 9065 return ret; 9066} 9067 9068 9069static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si) 9070{ 9071 struct i802_bss *bss = priv; 9072 struct wpa_driver_nl80211_data *drv = bss->drv; 9073 int res; 9074 9075 os_memset(si, 0, sizeof(*si)); 9076 res = nl80211_get_link_signal(drv, si); 9077 if (res != 0) 9078 return res; 9079 9080 return nl80211_get_link_noise(drv, si); 9081} 9082 9083 9084static int wpa_driver_nl80211_shared_freq(void *priv) 9085{ 9086 struct i802_bss *bss = priv; 9087 struct wpa_driver_nl80211_data *drv = bss->drv; 9088 struct wpa_driver_nl80211_data *driver; 9089 int freq = 0; 9090 9091 /* 9092 * If the same PHY is in connected state with some other interface, 9093 * then retrieve the assoc freq. 9094 */ 9095 wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s", 9096 drv->phyname); 9097 9098 dl_list_for_each(driver, &drv->global->interfaces, 9099 struct wpa_driver_nl80211_data, list) { 9100 if (drv == driver || 9101 os_strcmp(drv->phyname, driver->phyname) != 0 || 9102#ifdef ANDROID_P2P 9103 (!driver->associated && !is_ap_interface(driver->nlmode))) 9104#else 9105 !driver->associated) 9106#endif 9107 continue; 9108 9109 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s " 9110 MACSTR, 9111 driver->phyname, driver->first_bss.ifname, 9112 MAC2STR(driver->first_bss.addr)); 9113 if (is_ap_interface(driver->nlmode)) 9114 freq = driver->first_bss.freq; 9115 else 9116 freq = nl80211_get_assoc_freq(driver); 9117 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d", 9118 drv->phyname, freq); 9119 } 9120 9121 if (!freq) 9122 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for " 9123 "PHY (%s) in associated state", drv->phyname); 9124 9125 return freq; 9126} 9127 9128 9129static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len, 9130 int encrypt) 9131{ 9132 struct i802_bss *bss = priv; 9133 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0, 9134 0, 0, 0, 0); 9135} 9136 9137 9138static int nl80211_set_param(void *priv, const char *param) 9139{ 9140 wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param); 9141 if (param == NULL) 9142 return 0; 9143 9144#ifdef CONFIG_P2P 9145 if (os_strstr(param, "use_p2p_group_interface=1")) { 9146 struct i802_bss *bss = priv; 9147 struct wpa_driver_nl80211_data *drv = bss->drv; 9148 9149 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 9150 "interface"); 9151 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 9152 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 9153 } 9154#ifdef ANDROID_P2P 9155 if(os_strstr(param, "use_multi_chan_concurrent=1")) { 9156 struct i802_bss *bss = priv; 9157 struct wpa_driver_nl80211_data *drv = bss->drv; 9158 wpa_printf(MSG_DEBUG, "nl80211: Use Multi channel " 9159 "concurrency"); 9160 drv->capa.flags |= WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT; 9161 } 9162#endif 9163#endif /* CONFIG_P2P */ 9164 9165 return 0; 9166} 9167 9168 9169static void * nl80211_global_init(void) 9170{ 9171 struct nl80211_global *global; 9172 struct netlink_config *cfg; 9173 9174 global = os_zalloc(sizeof(*global)); 9175 if (global == NULL) 9176 return NULL; 9177 global->ioctl_sock = -1; 9178 dl_list_init(&global->interfaces); 9179 global->if_add_ifindex = -1; 9180 9181 cfg = os_zalloc(sizeof(*cfg)); 9182 if (cfg == NULL) 9183 goto err; 9184 9185 cfg->ctx = global; 9186 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink; 9187 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink; 9188 global->netlink = netlink_init(cfg); 9189 if (global->netlink == NULL) { 9190 os_free(cfg); 9191 goto err; 9192 } 9193 9194 if (wpa_driver_nl80211_init_nl_global(global) < 0) 9195 goto err; 9196 9197 global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0); 9198 if (global->ioctl_sock < 0) { 9199 perror("socket(PF_INET,SOCK_DGRAM)"); 9200 goto err; 9201 } 9202 9203 return global; 9204 9205err: 9206 nl80211_global_deinit(global); 9207 return NULL; 9208} 9209 9210 9211static void nl80211_global_deinit(void *priv) 9212{ 9213 struct nl80211_global *global = priv; 9214 if (global == NULL) 9215 return; 9216 if (!dl_list_empty(&global->interfaces)) { 9217 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at " 9218 "nl80211_global_deinit", 9219 dl_list_len(&global->interfaces)); 9220 } 9221 9222 if (global->netlink) 9223 netlink_deinit(global->netlink); 9224 9225 nl_destroy_handles(&global->nl); 9226 9227 if (global->nl_event) { 9228 eloop_unregister_read_sock( 9229 nl_socket_get_fd(global->nl_event)); 9230 nl_destroy_handles(&global->nl_event); 9231 } 9232 9233 nl_cb_put(global->nl_cb); 9234 9235 if (global->ioctl_sock >= 0) 9236 close(global->ioctl_sock); 9237 9238 os_free(global); 9239} 9240 9241 9242static const char * nl80211_get_radio_name(void *priv) 9243{ 9244 struct i802_bss *bss = priv; 9245 struct wpa_driver_nl80211_data *drv = bss->drv; 9246 return drv->phyname; 9247} 9248 9249 9250static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid, 9251 const u8 *pmkid) 9252{ 9253 struct nl_msg *msg; 9254 9255 msg = nlmsg_alloc(); 9256 if (!msg) 9257 return -ENOMEM; 9258 9259 nl80211_cmd(bss->drv, msg, 0, cmd); 9260 9261 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 9262 if (pmkid) 9263 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid); 9264 if (bssid) 9265 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); 9266 9267 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 9268 nla_put_failure: 9269 nlmsg_free(msg); 9270 return -ENOBUFS; 9271} 9272 9273 9274static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 9275{ 9276 struct i802_bss *bss = priv; 9277 wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid)); 9278 return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid); 9279} 9280 9281 9282static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 9283{ 9284 struct i802_bss *bss = priv; 9285 wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR, 9286 MAC2STR(bssid)); 9287 return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid); 9288} 9289 9290 9291static int nl80211_flush_pmkid(void *priv) 9292{ 9293 struct i802_bss *bss = priv; 9294 wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs"); 9295 return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL); 9296} 9297 9298 9299static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck, 9300 const u8 *replay_ctr) 9301{ 9302 struct i802_bss *bss = priv; 9303 struct wpa_driver_nl80211_data *drv = bss->drv; 9304 struct nlattr *replay_nested; 9305 struct nl_msg *msg; 9306 9307 msg = nlmsg_alloc(); 9308 if (!msg) 9309 return; 9310 9311 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 9312 9313 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9314 9315 replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 9316 if (!replay_nested) 9317 goto nla_put_failure; 9318 9319 NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek); 9320 NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck); 9321 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN, 9322 replay_ctr); 9323 9324 nla_nest_end(msg, replay_nested); 9325 9326 send_and_recv_msgs(drv, msg, NULL, NULL); 9327 return; 9328 nla_put_failure: 9329 nlmsg_free(msg); 9330} 9331 9332 9333static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr, 9334 const u8 *addr, int qos) 9335{ 9336 /* send data frame to poll STA and check whether 9337 * this frame is ACKed */ 9338 struct { 9339 struct ieee80211_hdr hdr; 9340 u16 qos_ctl; 9341 } STRUCT_PACKED nulldata; 9342 size_t size; 9343 9344 /* Send data frame to poll STA and check whether this frame is ACKed */ 9345 9346 os_memset(&nulldata, 0, sizeof(nulldata)); 9347 9348 if (qos) { 9349 nulldata.hdr.frame_control = 9350 IEEE80211_FC(WLAN_FC_TYPE_DATA, 9351 WLAN_FC_STYPE_QOS_NULL); 9352 size = sizeof(nulldata); 9353 } else { 9354 nulldata.hdr.frame_control = 9355 IEEE80211_FC(WLAN_FC_TYPE_DATA, 9356 WLAN_FC_STYPE_NULLFUNC); 9357 size = sizeof(struct ieee80211_hdr); 9358 } 9359 9360 nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS); 9361 os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN); 9362 os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 9363 os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 9364 9365 if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0, 9366 0, 0) < 0) 9367 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to " 9368 "send poll frame"); 9369} 9370 9371static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr, 9372 int qos) 9373{ 9374 struct i802_bss *bss = priv; 9375 struct wpa_driver_nl80211_data *drv = bss->drv; 9376 struct nl_msg *msg; 9377 9378 if (!drv->poll_command_supported) { 9379 nl80211_send_null_frame(bss, own_addr, addr, qos); 9380 return; 9381 } 9382 9383 msg = nlmsg_alloc(); 9384 if (!msg) 9385 return; 9386 9387 nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT); 9388 9389 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9390 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 9391 9392 send_and_recv_msgs(drv, msg, NULL, NULL); 9393 return; 9394 nla_put_failure: 9395 nlmsg_free(msg); 9396} 9397 9398 9399static int nl80211_set_power_save(struct i802_bss *bss, int enabled) 9400{ 9401 struct nl_msg *msg; 9402 9403 msg = nlmsg_alloc(); 9404 if (!msg) 9405 return -ENOMEM; 9406 9407 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE); 9408 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9409 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, 9410 enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED); 9411 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 9412nla_put_failure: 9413 nlmsg_free(msg); 9414 return -ENOBUFS; 9415} 9416 9417 9418static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps, 9419 int ctwindow) 9420{ 9421 struct i802_bss *bss = priv; 9422 9423 wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d " 9424 "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow); 9425 9426 if (opp_ps != -1 || ctwindow != -1) 9427#ifdef ANDROID_P2P 9428 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow); 9429#else 9430 return -1; /* Not yet supported */ 9431#endif 9432 9433 if (legacy_ps == -1) 9434 return 0; 9435 if (legacy_ps != 0 && legacy_ps != 1) 9436 return -1; /* Not yet supported */ 9437 9438 return nl80211_set_power_save(bss, legacy_ps); 9439} 9440 9441 9442#ifdef CONFIG_TDLS 9443 9444static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code, 9445 u8 dialog_token, u16 status_code, 9446 const u8 *buf, size_t len) 9447{ 9448 struct i802_bss *bss = priv; 9449 struct wpa_driver_nl80211_data *drv = bss->drv; 9450 struct nl_msg *msg; 9451 9452 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 9453 return -EOPNOTSUPP; 9454 9455 if (!dst) 9456 return -EINVAL; 9457 9458 msg = nlmsg_alloc(); 9459 if (!msg) 9460 return -ENOMEM; 9461 9462 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT); 9463 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 9464 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst); 9465 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code); 9466 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token); 9467 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code); 9468 NLA_PUT(msg, NL80211_ATTR_IE, len, buf); 9469 9470 return send_and_recv_msgs(drv, msg, NULL, NULL); 9471 9472nla_put_failure: 9473 nlmsg_free(msg); 9474 return -ENOBUFS; 9475} 9476 9477 9478static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer) 9479{ 9480 struct i802_bss *bss = priv; 9481 struct wpa_driver_nl80211_data *drv = bss->drv; 9482 struct nl_msg *msg; 9483 enum nl80211_tdls_operation nl80211_oper; 9484 9485 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 9486 return -EOPNOTSUPP; 9487 9488 switch (oper) { 9489 case TDLS_DISCOVERY_REQ: 9490 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ; 9491 break; 9492 case TDLS_SETUP: 9493 nl80211_oper = NL80211_TDLS_SETUP; 9494 break; 9495 case TDLS_TEARDOWN: 9496 nl80211_oper = NL80211_TDLS_TEARDOWN; 9497 break; 9498 case TDLS_ENABLE_LINK: 9499 nl80211_oper = NL80211_TDLS_ENABLE_LINK; 9500 break; 9501 case TDLS_DISABLE_LINK: 9502 nl80211_oper = NL80211_TDLS_DISABLE_LINK; 9503 break; 9504 case TDLS_ENABLE: 9505 return 0; 9506 case TDLS_DISABLE: 9507 return 0; 9508 default: 9509 return -EINVAL; 9510 } 9511 9512 msg = nlmsg_alloc(); 9513 if (!msg) 9514 return -ENOMEM; 9515 9516 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER); 9517 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper); 9518 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 9519 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer); 9520 9521 return send_and_recv_msgs(drv, msg, NULL, NULL); 9522 9523nla_put_failure: 9524 nlmsg_free(msg); 9525 return -ENOBUFS; 9526} 9527 9528#endif /* CONFIG TDLS */ 9529 9530 9531#ifdef ANDROID 9532 9533typedef struct android_wifi_priv_cmd { 9534 char *buf; 9535 int used_len; 9536 int total_len; 9537} android_wifi_priv_cmd; 9538 9539static int drv_errors = 0; 9540 9541static void wpa_driver_send_hang_msg(struct wpa_driver_nl80211_data *drv) 9542{ 9543 drv_errors++; 9544 if (drv_errors > DRV_NUMBER_SEQUENTIAL_ERRORS) { 9545 drv_errors = 0; 9546 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED"); 9547 } 9548} 9549 9550 9551static int android_priv_cmd(struct i802_bss *bss, const char *cmd) 9552{ 9553 struct wpa_driver_nl80211_data *drv = bss->drv; 9554 struct ifreq ifr; 9555 android_wifi_priv_cmd priv_cmd; 9556 char buf[MAX_DRV_CMD_SIZE]; 9557 int ret; 9558 9559 os_memset(&ifr, 0, sizeof(ifr)); 9560 os_memset(&priv_cmd, 0, sizeof(priv_cmd)); 9561 os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 9562 9563 os_memset(buf, 0, sizeof(buf)); 9564 os_strlcpy(buf, cmd, sizeof(buf)); 9565 9566 priv_cmd.buf = buf; 9567 priv_cmd.used_len = sizeof(buf); 9568 priv_cmd.total_len = sizeof(buf); 9569 ifr.ifr_data = &priv_cmd; 9570 9571 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 9572 if (ret < 0) { 9573 wpa_printf(MSG_ERROR, "%s: failed to issue private commands", 9574 __func__); 9575 wpa_driver_send_hang_msg(drv); 9576 return ret; 9577 } 9578 9579 drv_errors = 0; 9580 return 0; 9581} 9582 9583 9584static int android_pno_start(struct i802_bss *bss, 9585 struct wpa_driver_scan_params *params) 9586{ 9587 struct wpa_driver_nl80211_data *drv = bss->drv; 9588 struct ifreq ifr; 9589 android_wifi_priv_cmd priv_cmd; 9590 int ret = 0, i = 0, bp; 9591 char buf[WEXT_PNO_MAX_COMMAND_SIZE]; 9592 9593 bp = WEXT_PNOSETUP_HEADER_SIZE; 9594 os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp); 9595 buf[bp++] = WEXT_PNO_TLV_PREFIX; 9596 buf[bp++] = WEXT_PNO_TLV_VERSION; 9597 buf[bp++] = WEXT_PNO_TLV_SUBVERSION; 9598 buf[bp++] = WEXT_PNO_TLV_RESERVED; 9599 9600 while (i < WEXT_PNO_AMOUNT && (size_t) i < params->num_ssids) { 9601 /* Check that there is enough space needed for 1 more SSID, the 9602 * other sections and null termination */ 9603 if ((bp + WEXT_PNO_SSID_HEADER_SIZE + MAX_SSID_LEN + 9604 WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int) sizeof(buf)) 9605 break; 9606 wpa_hexdump_ascii(MSG_DEBUG, "For PNO Scan", 9607 params->ssids[i].ssid, 9608 params->ssids[i].ssid_len); 9609 buf[bp++] = WEXT_PNO_SSID_SECTION; 9610 buf[bp++] = params->ssids[i].ssid_len; 9611 os_memcpy(&buf[bp], params->ssids[i].ssid, 9612 params->ssids[i].ssid_len); 9613 bp += params->ssids[i].ssid_len; 9614 i++; 9615 } 9616 9617 buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION; 9618 os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x", 9619 WEXT_PNO_SCAN_INTERVAL); 9620 bp += WEXT_PNO_SCAN_INTERVAL_LENGTH; 9621 9622 buf[bp++] = WEXT_PNO_REPEAT_SECTION; 9623 os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x", 9624 WEXT_PNO_REPEAT); 9625 bp += WEXT_PNO_REPEAT_LENGTH; 9626 9627 buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION; 9628 os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x", 9629 WEXT_PNO_MAX_REPEAT); 9630 bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1; 9631 9632 memset(&ifr, 0, sizeof(ifr)); 9633 memset(&priv_cmd, 0, sizeof(priv_cmd)); 9634 os_strncpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 9635 9636 priv_cmd.buf = buf; 9637 priv_cmd.used_len = bp; 9638 priv_cmd.total_len = bp; 9639 ifr.ifr_data = &priv_cmd; 9640 9641 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 9642 9643 if (ret < 0) { 9644 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d", 9645 ret); 9646 wpa_driver_send_hang_msg(drv); 9647 return ret; 9648 } 9649 9650 drv_errors = 0; 9651 9652 return android_priv_cmd(bss, "PNOFORCE 1"); 9653} 9654 9655 9656static int android_pno_stop(struct i802_bss *bss) 9657{ 9658 return android_priv_cmd(bss, "PNOFORCE 0"); 9659} 9660 9661#endif /* ANDROID */ 9662 9663 9664static int driver_nl80211_set_key(const char *ifname, void *priv, 9665 enum wpa_alg alg, const u8 *addr, 9666 int key_idx, int set_tx, 9667 const u8 *seq, size_t seq_len, 9668 const u8 *key, size_t key_len) 9669{ 9670 struct i802_bss *bss = priv; 9671 return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx, 9672 set_tx, seq, seq_len, key, key_len); 9673} 9674 9675 9676static int driver_nl80211_scan2(void *priv, 9677 struct wpa_driver_scan_params *params) 9678{ 9679 struct i802_bss *bss = priv; 9680 return wpa_driver_nl80211_scan(bss, params); 9681} 9682 9683 9684static int driver_nl80211_deauthenticate(void *priv, const u8 *addr, 9685 int reason_code) 9686{ 9687 struct i802_bss *bss = priv; 9688 return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code); 9689} 9690 9691 9692static int driver_nl80211_authenticate(void *priv, 9693 struct wpa_driver_auth_params *params) 9694{ 9695 struct i802_bss *bss = priv; 9696 return wpa_driver_nl80211_authenticate(bss, params); 9697} 9698 9699 9700static void driver_nl80211_deinit(void *priv) 9701{ 9702 struct i802_bss *bss = priv; 9703 wpa_driver_nl80211_deinit(bss); 9704} 9705 9706 9707static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type, 9708 const char *ifname) 9709{ 9710 struct i802_bss *bss = priv; 9711 return wpa_driver_nl80211_if_remove(bss, type, ifname); 9712} 9713 9714 9715static int driver_nl80211_send_mlme(void *priv, const u8 *data, 9716 size_t data_len, int noack) 9717{ 9718 struct i802_bss *bss = priv; 9719 return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack, 9720 0, 0, 0, 0); 9721} 9722 9723 9724static int driver_nl80211_sta_remove(void *priv, const u8 *addr) 9725{ 9726 struct i802_bss *bss = priv; 9727 return wpa_driver_nl80211_sta_remove(bss, addr); 9728} 9729 9730 9731#if defined(HOSTAPD) || defined(CONFIG_AP) 9732static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr, 9733 const char *ifname, int vlan_id) 9734{ 9735 struct i802_bss *bss = priv; 9736 return i802_set_sta_vlan(bss, addr, ifname, vlan_id); 9737} 9738#endif /* HOSTAPD || CONFIG_AP */ 9739 9740 9741static int driver_nl80211_read_sta_data(void *priv, 9742 struct hostap_sta_driver_data *data, 9743 const u8 *addr) 9744{ 9745 struct i802_bss *bss = priv; 9746 return i802_read_sta_data(bss, data, addr); 9747} 9748 9749 9750static int driver_nl80211_send_action(void *priv, unsigned int freq, 9751 unsigned int wait_time, 9752 const u8 *dst, const u8 *src, 9753 const u8 *bssid, 9754 const u8 *data, size_t data_len, 9755 int no_cck) 9756{ 9757 struct i802_bss *bss = priv; 9758 return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src, 9759 bssid, data, data_len, no_cck); 9760} 9761 9762 9763static int driver_nl80211_probe_req_report(void *priv, int report) 9764{ 9765 struct i802_bss *bss = priv; 9766 return wpa_driver_nl80211_probe_req_report(bss, report); 9767} 9768 9769 9770static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md, 9771 const u8 *ies, size_t ies_len) 9772{ 9773 int ret; 9774 struct nl_msg *msg; 9775 struct i802_bss *bss = priv; 9776 struct wpa_driver_nl80211_data *drv = bss->drv; 9777 u16 mdid = WPA_GET_LE16(md); 9778 9779 msg = nlmsg_alloc(); 9780 if (!msg) 9781 return -ENOMEM; 9782 9783 wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs"); 9784 nl80211_cmd(drv, msg, 0, NL80211_CMD_UPDATE_FT_IES); 9785 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 9786 NLA_PUT(msg, NL80211_ATTR_IE, ies_len, ies); 9787 NLA_PUT_U16(msg, NL80211_ATTR_MDID, mdid); 9788 9789 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 9790 if (ret) { 9791 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed " 9792 "err=%d (%s)", ret, strerror(-ret)); 9793 } 9794 9795 return ret; 9796 9797nla_put_failure: 9798 nlmsg_free(msg); 9799 return -ENOBUFS; 9800} 9801 9802 9803const struct wpa_driver_ops wpa_driver_nl80211_ops = { 9804 .name = "nl80211", 9805 .desc = "Linux nl80211/cfg80211", 9806 .get_bssid = wpa_driver_nl80211_get_bssid, 9807 .get_ssid = wpa_driver_nl80211_get_ssid, 9808 .set_key = driver_nl80211_set_key, 9809 .scan2 = driver_nl80211_scan2, 9810 .sched_scan = wpa_driver_nl80211_sched_scan, 9811 .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan, 9812 .get_scan_results2 = wpa_driver_nl80211_get_scan_results, 9813 .deauthenticate = driver_nl80211_deauthenticate, 9814 .authenticate = driver_nl80211_authenticate, 9815 .associate = wpa_driver_nl80211_associate, 9816 .global_init = nl80211_global_init, 9817 .global_deinit = nl80211_global_deinit, 9818 .init2 = wpa_driver_nl80211_init, 9819 .deinit = driver_nl80211_deinit, 9820 .get_capa = wpa_driver_nl80211_get_capa, 9821 .set_operstate = wpa_driver_nl80211_set_operstate, 9822 .set_supp_port = wpa_driver_nl80211_set_supp_port, 9823 .set_country = wpa_driver_nl80211_set_country, 9824 .set_ap = wpa_driver_nl80211_set_ap, 9825 .if_add = wpa_driver_nl80211_if_add, 9826 .if_remove = driver_nl80211_if_remove, 9827 .send_mlme = driver_nl80211_send_mlme, 9828 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data, 9829 .sta_add = wpa_driver_nl80211_sta_add, 9830 .sta_remove = driver_nl80211_sta_remove, 9831 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol, 9832 .sta_set_flags = wpa_driver_nl80211_sta_set_flags, 9833#ifdef HOSTAPD 9834 .hapd_init = i802_init, 9835 .hapd_deinit = i802_deinit, 9836 .set_wds_sta = i802_set_wds_sta, 9837#endif /* HOSTAPD */ 9838#if defined(HOSTAPD) || defined(CONFIG_AP) 9839 .get_seqnum = i802_get_seqnum, 9840 .flush = i802_flush, 9841 .get_inact_sec = i802_get_inact_sec, 9842 .sta_clear_stats = i802_sta_clear_stats, 9843 .set_rts = i802_set_rts, 9844 .set_frag = i802_set_frag, 9845 .set_tx_queue_params = i802_set_tx_queue_params, 9846 .set_sta_vlan = driver_nl80211_set_sta_vlan, 9847 .sta_deauth = i802_sta_deauth, 9848 .sta_disassoc = i802_sta_disassoc, 9849#endif /* HOSTAPD || CONFIG_AP */ 9850 .read_sta_data = driver_nl80211_read_sta_data, 9851 .set_freq = i802_set_freq, 9852 .send_action = driver_nl80211_send_action, 9853 .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait, 9854 .remain_on_channel = wpa_driver_nl80211_remain_on_channel, 9855 .cancel_remain_on_channel = 9856 wpa_driver_nl80211_cancel_remain_on_channel, 9857 .probe_req_report = driver_nl80211_probe_req_report, 9858 .deinit_ap = wpa_driver_nl80211_deinit_ap, 9859 .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli, 9860 .resume = wpa_driver_nl80211_resume, 9861 .send_ft_action = nl80211_send_ft_action, 9862 .signal_monitor = nl80211_signal_monitor, 9863 .signal_poll = nl80211_signal_poll, 9864 .send_frame = nl80211_send_frame, 9865 .shared_freq = wpa_driver_nl80211_shared_freq, 9866 .set_param = nl80211_set_param, 9867 .get_radio_name = nl80211_get_radio_name, 9868 .add_pmkid = nl80211_add_pmkid, 9869 .remove_pmkid = nl80211_remove_pmkid, 9870 .flush_pmkid = nl80211_flush_pmkid, 9871 .set_rekey_info = nl80211_set_rekey_info, 9872 .poll_client = nl80211_poll_client, 9873 .set_p2p_powersave = nl80211_set_p2p_powersave, 9874#ifdef CONFIG_TDLS 9875 .send_tdls_mgmt = nl80211_send_tdls_mgmt, 9876 .tdls_oper = nl80211_tdls_oper, 9877#endif /* CONFIG_TDLS */ 9878 .update_ft_ies = wpa_driver_nl80211_update_ft_ies, 9879#ifdef ANDROID_P2P 9880 .set_noa = wpa_driver_set_p2p_noa, 9881 .get_noa = wpa_driver_get_p2p_noa, 9882 .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie, 9883#endif 9884#ifdef ANDROID 9885 .driver_cmd = wpa_driver_nl80211_driver_cmd, 9886#endif 9887}; 9888