driver_nl80211.c revision 444d567b27731d8572ef37697dd12fd1c37c2f24
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_DEBUG, "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 wpa_driver_nl80211_data *drv, 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 if (timed_out && addr) { 1495 mlme_timeout_event(drv, cmd, addr); 1496 return; 1497 } 1498 1499 if (frame == NULL) { 1500 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame " 1501 "data", cmd); 1502 return; 1503 } 1504 1505 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd); 1506 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame", 1507 nla_data(frame), nla_len(frame)); 1508 1509 switch (cmd) { 1510 case NL80211_CMD_AUTHENTICATE: 1511 mlme_event_auth(drv, nla_data(frame), nla_len(frame)); 1512 break; 1513 case NL80211_CMD_ASSOCIATE: 1514 mlme_event_assoc(drv, nla_data(frame), nla_len(frame)); 1515 break; 1516 case NL80211_CMD_DEAUTHENTICATE: 1517 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH, 1518 nla_data(frame), nla_len(frame)); 1519 break; 1520 case NL80211_CMD_DISASSOCIATE: 1521 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC, 1522 nla_data(frame), nla_len(frame)); 1523 break; 1524 case NL80211_CMD_FRAME: 1525 mlme_event_mgmt(drv, freq, sig, nla_data(frame), 1526 nla_len(frame)); 1527 break; 1528 case NL80211_CMD_FRAME_TX_STATUS: 1529 mlme_event_mgmt_tx_status(drv, cookie, nla_data(frame), 1530 nla_len(frame), ack); 1531 break; 1532 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 1533 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH, 1534 nla_data(frame), nla_len(frame)); 1535 break; 1536 case NL80211_CMD_UNPROT_DISASSOCIATE: 1537 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC, 1538 nla_data(frame), nla_len(frame)); 1539 break; 1540 default: 1541 break; 1542 } 1543} 1544 1545 1546static void mlme_event_michael_mic_failure(struct i802_bss *bss, 1547 struct nlattr *tb[]) 1548{ 1549 union wpa_event_data data; 1550 1551 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure"); 1552 os_memset(&data, 0, sizeof(data)); 1553 if (tb[NL80211_ATTR_MAC]) { 1554 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address", 1555 nla_data(tb[NL80211_ATTR_MAC]), 1556 nla_len(tb[NL80211_ATTR_MAC])); 1557 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]); 1558 } 1559 if (tb[NL80211_ATTR_KEY_SEQ]) { 1560 wpa_hexdump(MSG_DEBUG, "nl80211: TSC", 1561 nla_data(tb[NL80211_ATTR_KEY_SEQ]), 1562 nla_len(tb[NL80211_ATTR_KEY_SEQ])); 1563 } 1564 if (tb[NL80211_ATTR_KEY_TYPE]) { 1565 enum nl80211_key_type key_type = 1566 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]); 1567 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type); 1568 if (key_type == NL80211_KEYTYPE_PAIRWISE) 1569 data.michael_mic_failure.unicast = 1; 1570 } else 1571 data.michael_mic_failure.unicast = 1; 1572 1573 if (tb[NL80211_ATTR_KEY_IDX]) { 1574 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]); 1575 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id); 1576 } 1577 1578 wpa_supplicant_event(bss->ctx, EVENT_MICHAEL_MIC_FAILURE, &data); 1579} 1580 1581 1582static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv, 1583 struct nlattr *tb[]) 1584{ 1585 if (tb[NL80211_ATTR_MAC] == NULL) { 1586 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined " 1587 "event"); 1588 return; 1589 } 1590 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 1591 drv->associated = 1; 1592 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined", 1593 MAC2STR(drv->bssid)); 1594 1595 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL); 1596} 1597 1598 1599static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv, 1600 int cancel_event, struct nlattr *tb[]) 1601{ 1602 unsigned int freq, chan_type, duration; 1603 union wpa_event_data data; 1604 u64 cookie; 1605 1606 if (tb[NL80211_ATTR_WIPHY_FREQ]) 1607 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]); 1608 else 1609 freq = 0; 1610 1611 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) 1612 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 1613 else 1614 chan_type = 0; 1615 1616 if (tb[NL80211_ATTR_DURATION]) 1617 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]); 1618 else 1619 duration = 0; 1620 1621 if (tb[NL80211_ATTR_COOKIE]) 1622 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 1623 else 1624 cookie = 0; 1625 1626 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d " 1627 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))", 1628 cancel_event, freq, chan_type, duration, 1629 (long long unsigned int) cookie, 1630 cookie == drv->remain_on_chan_cookie ? "match" : "unknown"); 1631 1632 if (cookie != drv->remain_on_chan_cookie) 1633 return; /* not for us */ 1634 1635 if (cancel_event) 1636 drv->pending_remain_on_chan = 0; 1637 1638 os_memset(&data, 0, sizeof(data)); 1639 data.remain_on_channel.freq = freq; 1640 data.remain_on_channel.duration = duration; 1641 wpa_supplicant_event(drv->ctx, cancel_event ? 1642 EVENT_CANCEL_REMAIN_ON_CHANNEL : 1643 EVENT_REMAIN_ON_CHANNEL, &data); 1644} 1645 1646 1647static void mlme_event_ft_event(struct wpa_driver_nl80211_data *drv, 1648 struct nlattr *tb[]) 1649{ 1650 union wpa_event_data data; 1651 1652 os_memset(&data, 0, sizeof(data)); 1653 1654 if (tb[NL80211_ATTR_IE]) { 1655 data.ft_ies.ies = nla_data(tb[NL80211_ATTR_IE]); 1656 data.ft_ies.ies_len = nla_len(tb[NL80211_ATTR_IE]); 1657 } 1658 1659 if (tb[NL80211_ATTR_IE_RIC]) { 1660 data.ft_ies.ric_ies = nla_data(tb[NL80211_ATTR_IE_RIC]); 1661 data.ft_ies.ric_ies_len = nla_len(tb[NL80211_ATTR_IE_RIC]); 1662 } 1663 1664 if (tb[NL80211_ATTR_MAC]) 1665 os_memcpy(data.ft_ies.target_ap, 1666 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 1667 1668 wpa_printf(MSG_DEBUG, "nl80211: FT event target_ap " MACSTR, 1669 MAC2STR(data.ft_ies.target_ap)); 1670 1671 wpa_supplicant_event(drv->ctx, EVENT_FT_RESPONSE, &data); 1672} 1673 1674 1675static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted, 1676 struct nlattr *tb[]) 1677{ 1678 union wpa_event_data event; 1679 struct nlattr *nl; 1680 int rem; 1681 struct scan_info *info; 1682#define MAX_REPORT_FREQS 50 1683 int freqs[MAX_REPORT_FREQS]; 1684 int num_freqs = 0; 1685 1686 if (drv->scan_for_auth) { 1687 drv->scan_for_auth = 0; 1688 wpa_printf(MSG_DEBUG, "nl80211: Scan results for missing " 1689 "cfg80211 BSS entry"); 1690 wpa_driver_nl80211_authenticate_retry(drv); 1691 return; 1692 } 1693 1694 os_memset(&event, 0, sizeof(event)); 1695 info = &event.scan_info; 1696 info->aborted = aborted; 1697 1698 if (tb[NL80211_ATTR_SCAN_SSIDS]) { 1699 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) { 1700 struct wpa_driver_scan_ssid *s = 1701 &info->ssids[info->num_ssids]; 1702 s->ssid = nla_data(nl); 1703 s->ssid_len = nla_len(nl); 1704 info->num_ssids++; 1705 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS) 1706 break; 1707 } 1708 } 1709 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) { 1710 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem) 1711 { 1712 freqs[num_freqs] = nla_get_u32(nl); 1713 num_freqs++; 1714 if (num_freqs == MAX_REPORT_FREQS - 1) 1715 break; 1716 } 1717 info->freqs = freqs; 1718 info->num_freqs = num_freqs; 1719 } 1720 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event); 1721} 1722 1723 1724static int get_link_signal(struct nl_msg *msg, void *arg) 1725{ 1726 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1727 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1728 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1]; 1729 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = { 1730 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 }, 1731 }; 1732 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1]; 1733 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = { 1734 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 }, 1735 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 }, 1736 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG }, 1737 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG }, 1738 }; 1739 struct wpa_signal_info *sig_change = arg; 1740 1741 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1742 genlmsg_attrlen(gnlh, 0), NULL); 1743 if (!tb[NL80211_ATTR_STA_INFO] || 1744 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX, 1745 tb[NL80211_ATTR_STA_INFO], policy)) 1746 return NL_SKIP; 1747 if (!sinfo[NL80211_STA_INFO_SIGNAL]) 1748 return NL_SKIP; 1749 1750 sig_change->current_signal = 1751 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]); 1752 1753 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) { 1754 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX, 1755 sinfo[NL80211_STA_INFO_TX_BITRATE], 1756 rate_policy)) { 1757 sig_change->current_txrate = 0; 1758 } else { 1759 if (rinfo[NL80211_RATE_INFO_BITRATE]) { 1760 sig_change->current_txrate = 1761 nla_get_u16(rinfo[ 1762 NL80211_RATE_INFO_BITRATE]) * 100; 1763 } 1764 } 1765 } 1766 1767 return NL_SKIP; 1768} 1769 1770 1771static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv, 1772 struct wpa_signal_info *sig) 1773{ 1774 struct nl_msg *msg; 1775 1776 sig->current_signal = -9999; 1777 sig->current_txrate = 0; 1778 1779 msg = nlmsg_alloc(); 1780 if (!msg) 1781 return -ENOMEM; 1782 1783 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 1784 1785 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1786 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 1787 1788 return send_and_recv_msgs(drv, msg, get_link_signal, sig); 1789 nla_put_failure: 1790 nlmsg_free(msg); 1791 return -ENOBUFS; 1792} 1793 1794 1795static int get_link_noise(struct nl_msg *msg, void *arg) 1796{ 1797 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1798 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1799 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 1800 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 1801 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 1802 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 1803 }; 1804 struct wpa_signal_info *sig_change = arg; 1805 1806 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1807 genlmsg_attrlen(gnlh, 0), NULL); 1808 1809 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 1810 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!"); 1811 return NL_SKIP; 1812 } 1813 1814 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 1815 tb[NL80211_ATTR_SURVEY_INFO], 1816 survey_policy)) { 1817 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested " 1818 "attributes!"); 1819 return NL_SKIP; 1820 } 1821 1822 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 1823 return NL_SKIP; 1824 1825 if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 1826 sig_change->frequency) 1827 return NL_SKIP; 1828 1829 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 1830 return NL_SKIP; 1831 1832 sig_change->current_noise = 1833 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 1834 1835 return NL_SKIP; 1836} 1837 1838 1839static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv, 1840 struct wpa_signal_info *sig_change) 1841{ 1842 struct nl_msg *msg; 1843 1844 sig_change->current_noise = 9999; 1845 sig_change->frequency = drv->assoc_freq; 1846 1847 msg = nlmsg_alloc(); 1848 if (!msg) 1849 return -ENOMEM; 1850 1851 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 1852 1853 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1854 1855 return send_and_recv_msgs(drv, msg, get_link_noise, sig_change); 1856 nla_put_failure: 1857 nlmsg_free(msg); 1858 return -ENOBUFS; 1859} 1860 1861 1862static int get_noise_for_scan_results(struct nl_msg *msg, void *arg) 1863{ 1864 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1865 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1866 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 1867 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 1868 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 1869 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 1870 }; 1871 struct wpa_scan_results *scan_results = arg; 1872 struct wpa_scan_res *scan_res; 1873 size_t i; 1874 1875 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1876 genlmsg_attrlen(gnlh, 0), NULL); 1877 1878 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 1879 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing"); 1880 return NL_SKIP; 1881 } 1882 1883 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 1884 tb[NL80211_ATTR_SURVEY_INFO], 1885 survey_policy)) { 1886 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested " 1887 "attributes"); 1888 return NL_SKIP; 1889 } 1890 1891 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 1892 return NL_SKIP; 1893 1894 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 1895 return NL_SKIP; 1896 1897 for (i = 0; i < scan_results->num; ++i) { 1898 scan_res = scan_results->res[i]; 1899 if (!scan_res) 1900 continue; 1901 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 1902 scan_res->freq) 1903 continue; 1904 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID)) 1905 continue; 1906 scan_res->noise = (s8) 1907 nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 1908 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID; 1909 } 1910 1911 return NL_SKIP; 1912} 1913 1914 1915static int nl80211_get_noise_for_scan_results( 1916 struct wpa_driver_nl80211_data *drv, 1917 struct wpa_scan_results *scan_res) 1918{ 1919 struct nl_msg *msg; 1920 1921 msg = nlmsg_alloc(); 1922 if (!msg) 1923 return -ENOMEM; 1924 1925 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 1926 1927 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1928 1929 return send_and_recv_msgs(drv, msg, get_noise_for_scan_results, 1930 scan_res); 1931 nla_put_failure: 1932 nlmsg_free(msg); 1933 return -ENOBUFS; 1934} 1935 1936 1937static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv, 1938 struct nlattr *tb[]) 1939{ 1940 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 1941 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 1942 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 }, 1943 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 1944 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 }, 1945 }; 1946 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1]; 1947 enum nl80211_cqm_rssi_threshold_event event; 1948 union wpa_event_data ed; 1949 struct wpa_signal_info sig; 1950 int res; 1951 1952 if (tb[NL80211_ATTR_CQM] == NULL || 1953 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM], 1954 cqm_policy)) { 1955 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event"); 1956 return; 1957 } 1958 1959 os_memset(&ed, 0, sizeof(ed)); 1960 1961 if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) { 1962 if (!tb[NL80211_ATTR_MAC]) 1963 return; 1964 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]), 1965 ETH_ALEN); 1966 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed); 1967 return; 1968 } 1969 1970 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL) 1971 return; 1972 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]); 1973 1974 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) { 1975 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 1976 "event: RSSI high"); 1977 ed.signal_change.above_threshold = 1; 1978 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) { 1979 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 1980 "event: RSSI low"); 1981 ed.signal_change.above_threshold = 0; 1982 } else 1983 return; 1984 1985 res = nl80211_get_link_signal(drv, &sig); 1986 if (res == 0) { 1987 ed.signal_change.current_signal = sig.current_signal; 1988 ed.signal_change.current_txrate = sig.current_txrate; 1989 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm txrate: %d", 1990 sig.current_signal, sig.current_txrate); 1991 } 1992 1993 res = nl80211_get_link_noise(drv, &sig); 1994 if (res == 0) { 1995 ed.signal_change.current_noise = sig.current_noise; 1996 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm", 1997 sig.current_noise); 1998 } 1999 2000 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed); 2001} 2002 2003 2004static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv, 2005 struct nlattr **tb) 2006{ 2007 u8 *addr; 2008 union wpa_event_data data; 2009 2010 if (tb[NL80211_ATTR_MAC] == NULL) 2011 return; 2012 addr = nla_data(tb[NL80211_ATTR_MAC]); 2013 wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr)); 2014 2015 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { 2016 u8 *ies = NULL; 2017 size_t ies_len = 0; 2018 if (tb[NL80211_ATTR_IE]) { 2019 ies = nla_data(tb[NL80211_ATTR_IE]); 2020 ies_len = nla_len(tb[NL80211_ATTR_IE]); 2021 } 2022 wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len); 2023 drv_event_assoc(drv->ctx, addr, ies, ies_len, 0); 2024 return; 2025 } 2026 2027 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 2028 return; 2029 2030 os_memset(&data, 0, sizeof(data)); 2031 os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN); 2032 wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data); 2033} 2034 2035 2036static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv, 2037 struct nlattr **tb) 2038{ 2039 u8 *addr; 2040 union wpa_event_data data; 2041 2042 if (tb[NL80211_ATTR_MAC] == NULL) 2043 return; 2044 addr = nla_data(tb[NL80211_ATTR_MAC]); 2045 wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR, 2046 MAC2STR(addr)); 2047 2048 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { 2049 drv_event_disassoc(drv->ctx, addr); 2050 return; 2051 } 2052 2053 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 2054 return; 2055 2056 os_memset(&data, 0, sizeof(data)); 2057 os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN); 2058 wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data); 2059} 2060 2061 2062static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv, 2063 struct nlattr **tb) 2064{ 2065 struct nlattr *rekey_info[NUM_NL80211_REKEY_DATA]; 2066 static struct nla_policy rekey_policy[NUM_NL80211_REKEY_DATA] = { 2067 [NL80211_REKEY_DATA_KEK] = { 2068 .minlen = NL80211_KEK_LEN, 2069 .maxlen = NL80211_KEK_LEN, 2070 }, 2071 [NL80211_REKEY_DATA_KCK] = { 2072 .minlen = NL80211_KCK_LEN, 2073 .maxlen = NL80211_KCK_LEN, 2074 }, 2075 [NL80211_REKEY_DATA_REPLAY_CTR] = { 2076 .minlen = NL80211_REPLAY_CTR_LEN, 2077 .maxlen = NL80211_REPLAY_CTR_LEN, 2078 }, 2079 }; 2080 union wpa_event_data data; 2081 2082 if (!tb[NL80211_ATTR_MAC]) 2083 return; 2084 if (!tb[NL80211_ATTR_REKEY_DATA]) 2085 return; 2086 if (nla_parse_nested(rekey_info, MAX_NL80211_REKEY_DATA, 2087 tb[NL80211_ATTR_REKEY_DATA], rekey_policy)) 2088 return; 2089 if (!rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]) 2090 return; 2091 2092 os_memset(&data, 0, sizeof(data)); 2093 data.driver_gtk_rekey.bssid = nla_data(tb[NL80211_ATTR_MAC]); 2094 wpa_printf(MSG_DEBUG, "nl80211: Rekey offload event for BSSID " MACSTR, 2095 MAC2STR(data.driver_gtk_rekey.bssid)); 2096 data.driver_gtk_rekey.replay_ctr = 2097 nla_data(rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]); 2098 wpa_hexdump(MSG_DEBUG, "nl80211: Rekey offload - Replay Counter", 2099 data.driver_gtk_rekey.replay_ctr, NL80211_REPLAY_CTR_LEN); 2100 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_GTK_REKEY, &data); 2101} 2102 2103 2104static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv, 2105 struct nlattr **tb) 2106{ 2107 struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE]; 2108 static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = { 2109 [NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 }, 2110 [NL80211_PMKSA_CANDIDATE_BSSID] = { 2111 .minlen = ETH_ALEN, 2112 .maxlen = ETH_ALEN, 2113 }, 2114 [NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG }, 2115 }; 2116 union wpa_event_data data; 2117 2118 wpa_printf(MSG_DEBUG, "nl80211: PMKSA candidate event"); 2119 2120 if (!tb[NL80211_ATTR_PMKSA_CANDIDATE]) 2121 return; 2122 if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE, 2123 tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy)) 2124 return; 2125 if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] || 2126 !cand[NL80211_PMKSA_CANDIDATE_BSSID]) 2127 return; 2128 2129 os_memset(&data, 0, sizeof(data)); 2130 os_memcpy(data.pmkid_candidate.bssid, 2131 nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN); 2132 data.pmkid_candidate.index = 2133 nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]); 2134 data.pmkid_candidate.preauth = 2135 cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL; 2136 wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data); 2137} 2138 2139 2140static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv, 2141 struct nlattr **tb) 2142{ 2143 union wpa_event_data data; 2144 2145 wpa_printf(MSG_DEBUG, "nl80211: Probe client event"); 2146 2147 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_ACK]) 2148 return; 2149 2150 os_memset(&data, 0, sizeof(data)); 2151 os_memcpy(data.client_poll.addr, 2152 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2153 2154 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_CLIENT_POLL_OK, &data); 2155} 2156 2157 2158static void nl80211_tdls_oper_event(struct wpa_driver_nl80211_data *drv, 2159 struct nlattr **tb) 2160{ 2161 union wpa_event_data data; 2162 2163 wpa_printf(MSG_DEBUG, "nl80211: TDLS operation event"); 2164 2165 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_TDLS_OPERATION]) 2166 return; 2167 2168 os_memset(&data, 0, sizeof(data)); 2169 os_memcpy(data.tdls.peer, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2170 switch (nla_get_u8(tb[NL80211_ATTR_TDLS_OPERATION])) { 2171 case NL80211_TDLS_SETUP: 2172 wpa_printf(MSG_DEBUG, "nl80211: TDLS setup request for peer " 2173 MACSTR, MAC2STR(data.tdls.peer)); 2174 data.tdls.oper = TDLS_REQUEST_SETUP; 2175 break; 2176 case NL80211_TDLS_TEARDOWN: 2177 wpa_printf(MSG_DEBUG, "nl80211: TDLS teardown request for peer " 2178 MACSTR, MAC2STR(data.tdls.peer)); 2179 data.tdls.oper = TDLS_REQUEST_TEARDOWN; 2180 break; 2181 default: 2182 wpa_printf(MSG_DEBUG, "nl80211: Unsupported TDLS operatione " 2183 "event"); 2184 return; 2185 } 2186 if (tb[NL80211_ATTR_REASON_CODE]) { 2187 data.tdls.reason_code = 2188 nla_get_u16(tb[NL80211_ATTR_REASON_CODE]); 2189 } 2190 2191 wpa_supplicant_event(drv->ctx, EVENT_TDLS, &data); 2192} 2193 2194 2195static void nl80211_connect_failed_event(struct wpa_driver_nl80211_data *drv, 2196 struct nlattr **tb) 2197{ 2198 union wpa_event_data data; 2199 u32 reason; 2200 2201 wpa_printf(MSG_DEBUG, "nl80211: Connect failed event"); 2202 2203 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_CONN_FAILED_REASON]) 2204 return; 2205 2206 os_memset(&data, 0, sizeof(data)); 2207 os_memcpy(data.connect_failed_reason.addr, 2208 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2209 2210 reason = nla_get_u32(tb[NL80211_ATTR_CONN_FAILED_REASON]); 2211 switch (reason) { 2212 case NL80211_CONN_FAIL_MAX_CLIENTS: 2213 wpa_printf(MSG_DEBUG, "nl80211: Max client reached"); 2214 data.connect_failed_reason.code = MAX_CLIENT_REACHED; 2215 break; 2216 case NL80211_CONN_FAIL_BLOCKED_CLIENT: 2217 wpa_printf(MSG_DEBUG, "nl80211: Blocked client " MACSTR 2218 " tried to connect", 2219 MAC2STR(data.connect_failed_reason.addr)); 2220 data.connect_failed_reason.code = BLOCKED_CLIENT; 2221 break; 2222 default: 2223 wpa_printf(MSG_DEBUG, "nl8021l: Unknown connect failed reason " 2224 "%u", reason); 2225 return; 2226 } 2227 2228 wpa_supplicant_event(drv->ctx, EVENT_CONNECT_FAILED_REASON, &data); 2229} 2230 2231 2232static void nl80211_spurious_frame(struct i802_bss *bss, struct nlattr **tb, 2233 int wds) 2234{ 2235 struct wpa_driver_nl80211_data *drv = bss->drv; 2236 union wpa_event_data event; 2237 2238 if (!tb[NL80211_ATTR_MAC]) 2239 return; 2240 2241 os_memset(&event, 0, sizeof(event)); 2242 event.rx_from_unknown.bssid = bss->addr; 2243 event.rx_from_unknown.addr = nla_data(tb[NL80211_ATTR_MAC]); 2244 event.rx_from_unknown.wds = wds; 2245 2246 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 2247} 2248 2249 2250static void do_process_drv_event(struct i802_bss *bss, int cmd, 2251 struct nlattr **tb) 2252{ 2253 struct wpa_driver_nl80211_data *drv = bss->drv; 2254 2255 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED && 2256 (cmd == NL80211_CMD_NEW_SCAN_RESULTS || 2257 cmd == NL80211_CMD_SCAN_ABORTED)) { 2258 wpa_driver_nl80211_set_mode(&drv->first_bss, 2259 drv->ap_scan_as_station); 2260 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 2261 } 2262 2263 switch (cmd) { 2264 case NL80211_CMD_TRIGGER_SCAN: 2265 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Scan trigger"); 2266 break; 2267 case NL80211_CMD_START_SCHED_SCAN: 2268 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Sched scan started"); 2269 break; 2270 case NL80211_CMD_SCHED_SCAN_STOPPED: 2271 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Sched scan stopped"); 2272 wpa_supplicant_event(drv->ctx, EVENT_SCHED_SCAN_STOPPED, NULL); 2273 break; 2274 case NL80211_CMD_NEW_SCAN_RESULTS: 2275 wpa_dbg(drv->ctx, MSG_DEBUG, 2276 "nl80211: New scan results available"); 2277 drv->scan_complete_events = 1; 2278 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 2279 drv->ctx); 2280 send_scan_event(drv, 0, tb); 2281 break; 2282 case NL80211_CMD_SCHED_SCAN_RESULTS: 2283 wpa_dbg(drv->ctx, MSG_DEBUG, 2284 "nl80211: New sched scan results available"); 2285 send_scan_event(drv, 0, tb); 2286 break; 2287 case NL80211_CMD_SCAN_ABORTED: 2288 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Scan aborted"); 2289 /* 2290 * Need to indicate that scan results are available in order 2291 * not to make wpa_supplicant stop its scanning. 2292 */ 2293 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 2294 drv->ctx); 2295 send_scan_event(drv, 1, tb); 2296 break; 2297 case NL80211_CMD_AUTHENTICATE: 2298 case NL80211_CMD_ASSOCIATE: 2299 case NL80211_CMD_DEAUTHENTICATE: 2300 case NL80211_CMD_DISASSOCIATE: 2301 case NL80211_CMD_FRAME_TX_STATUS: 2302 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 2303 case NL80211_CMD_UNPROT_DISASSOCIATE: 2304 mlme_event(drv, cmd, tb[NL80211_ATTR_FRAME], 2305 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 2306 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 2307 tb[NL80211_ATTR_COOKIE], 2308 tb[NL80211_ATTR_RX_SIGNAL_DBM]); 2309 break; 2310 case NL80211_CMD_CONNECT: 2311 case NL80211_CMD_ROAM: 2312 mlme_event_connect(drv, cmd, 2313 tb[NL80211_ATTR_STATUS_CODE], 2314 tb[NL80211_ATTR_MAC], 2315 tb[NL80211_ATTR_REQ_IE], 2316 tb[NL80211_ATTR_RESP_IE]); 2317 break; 2318 case NL80211_CMD_CH_SWITCH_NOTIFY: 2319 mlme_event_ch_switch(drv, tb[NL80211_ATTR_WIPHY_FREQ], 2320 tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 2321 break; 2322 case NL80211_CMD_DISCONNECT: 2323 mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE], 2324 tb[NL80211_ATTR_MAC], 2325 tb[NL80211_ATTR_DISCONNECTED_BY_AP]); 2326 break; 2327 case NL80211_CMD_MICHAEL_MIC_FAILURE: 2328 mlme_event_michael_mic_failure(bss, tb); 2329 break; 2330 case NL80211_CMD_JOIN_IBSS: 2331 mlme_event_join_ibss(drv, tb); 2332 break; 2333 case NL80211_CMD_REMAIN_ON_CHANNEL: 2334 mlme_event_remain_on_channel(drv, 0, tb); 2335 break; 2336 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL: 2337 mlme_event_remain_on_channel(drv, 1, tb); 2338 break; 2339 case NL80211_CMD_NOTIFY_CQM: 2340 nl80211_cqm_event(drv, tb); 2341 break; 2342 case NL80211_CMD_REG_CHANGE: 2343 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change"); 2344 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 2345 NULL); 2346 break; 2347 case NL80211_CMD_REG_BEACON_HINT: 2348 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint"); 2349 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 2350 NULL); 2351 break; 2352 case NL80211_CMD_NEW_STATION: 2353 nl80211_new_station_event(drv, tb); 2354 break; 2355 case NL80211_CMD_DEL_STATION: 2356 nl80211_del_station_event(drv, tb); 2357 break; 2358 case NL80211_CMD_SET_REKEY_OFFLOAD: 2359 nl80211_rekey_offload_event(drv, tb); 2360 break; 2361 case NL80211_CMD_PMKSA_CANDIDATE: 2362 nl80211_pmksa_candidate_event(drv, tb); 2363 break; 2364 case NL80211_CMD_PROBE_CLIENT: 2365 nl80211_client_probe_event(drv, tb); 2366 break; 2367 case NL80211_CMD_TDLS_OPER: 2368 nl80211_tdls_oper_event(drv, tb); 2369 break; 2370 case NL80211_CMD_CONN_FAILED: 2371 nl80211_connect_failed_event(drv, tb); 2372 break; 2373 case NL80211_CMD_FT_EVENT: 2374 mlme_event_ft_event(drv, tb); 2375 break; 2376 default: 2377 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Ignored unknown event " 2378 "(cmd=%d)", cmd); 2379 break; 2380 } 2381} 2382 2383 2384static int process_drv_event(struct nl_msg *msg, void *arg) 2385{ 2386 struct wpa_driver_nl80211_data *drv = arg; 2387 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2388 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2389 struct i802_bss *bss; 2390 int ifidx = -1; 2391 2392 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2393 genlmsg_attrlen(gnlh, 0), NULL); 2394 2395 if (tb[NL80211_ATTR_IFINDEX]) 2396 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2397 2398 for (bss = &drv->first_bss; bss; bss = bss->next) { 2399 if (ifidx == -1 || ifidx == bss->ifindex) { 2400 do_process_drv_event(bss, gnlh->cmd, tb); 2401 return NL_SKIP; 2402 } 2403 } 2404 2405 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d) for foreign " 2406 "interface (ifindex %d)", gnlh->cmd, ifidx); 2407 2408 return NL_SKIP; 2409} 2410 2411 2412static int process_global_event(struct nl_msg *msg, void *arg) 2413{ 2414 struct nl80211_global *global = arg; 2415 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2416 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2417 struct wpa_driver_nl80211_data *drv, *tmp; 2418 int ifidx = -1; 2419 struct i802_bss *bss; 2420 2421 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2422 genlmsg_attrlen(gnlh, 0), NULL); 2423 2424 if (tb[NL80211_ATTR_IFINDEX]) 2425 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2426 2427 dl_list_for_each_safe(drv, tmp, &global->interfaces, 2428 struct wpa_driver_nl80211_data, list) { 2429 for (bss = &drv->first_bss; bss; bss = bss->next) { 2430 if (ifidx == -1 || ifidx == bss->ifindex) { 2431 do_process_drv_event(bss, gnlh->cmd, tb); 2432 return NL_SKIP; 2433 } 2434 } 2435 } 2436 2437 return NL_SKIP; 2438} 2439 2440 2441static int process_bss_event(struct nl_msg *msg, void *arg) 2442{ 2443 struct i802_bss *bss = arg; 2444 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2445 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2446 2447 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2448 genlmsg_attrlen(gnlh, 0), NULL); 2449 2450 switch (gnlh->cmd) { 2451 case NL80211_CMD_FRAME: 2452 case NL80211_CMD_FRAME_TX_STATUS: 2453 mlme_event(bss->drv, gnlh->cmd, tb[NL80211_ATTR_FRAME], 2454 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 2455 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 2456 tb[NL80211_ATTR_COOKIE], 2457 tb[NL80211_ATTR_RX_SIGNAL_DBM]); 2458 break; 2459 case NL80211_CMD_UNEXPECTED_FRAME: 2460 nl80211_spurious_frame(bss, tb, 0); 2461 break; 2462 case NL80211_CMD_UNEXPECTED_4ADDR_FRAME: 2463 nl80211_spurious_frame(bss, tb, 1); 2464 break; 2465 default: 2466 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event " 2467 "(cmd=%d)", gnlh->cmd); 2468 break; 2469 } 2470 2471 return NL_SKIP; 2472} 2473 2474 2475static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx, 2476 void *handle) 2477{ 2478 struct nl_cb *cb = eloop_ctx; 2479 2480 wpa_printf(MSG_DEBUG, "nl80211: Event message available"); 2481 2482 nl_recvmsgs(handle, cb); 2483} 2484 2485 2486/** 2487 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain 2488 * @priv: driver_nl80211 private data 2489 * @alpha2_arg: country to which to switch to 2490 * Returns: 0 on success, -1 on failure 2491 * 2492 * This asks nl80211 to set the regulatory domain for given 2493 * country ISO / IEC alpha2. 2494 */ 2495static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg) 2496{ 2497 struct i802_bss *bss = priv; 2498 struct wpa_driver_nl80211_data *drv = bss->drv; 2499 char alpha2[3]; 2500 struct nl_msg *msg; 2501 2502 msg = nlmsg_alloc(); 2503 if (!msg) 2504 return -ENOMEM; 2505 2506 alpha2[0] = alpha2_arg[0]; 2507 alpha2[1] = alpha2_arg[1]; 2508 alpha2[2] = '\0'; 2509 2510 nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG); 2511 2512 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2); 2513 if (send_and_recv_msgs(drv, msg, NULL, NULL)) 2514 return -EINVAL; 2515 return 0; 2516nla_put_failure: 2517 nlmsg_free(msg); 2518 return -EINVAL; 2519} 2520 2521 2522static int protocol_feature_handler(struct nl_msg *msg, void *arg) 2523{ 2524 u32 *feat = arg; 2525 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 2526 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2527 2528 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2529 genlmsg_attrlen(gnlh, 0), NULL); 2530 2531 if (tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]) 2532 *feat = nla_get_u32(tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]); 2533 2534 return NL_SKIP; 2535} 2536 2537 2538static u32 get_nl80211_protocol_features(struct wpa_driver_nl80211_data *drv) 2539{ 2540 u32 feat = 0; 2541 struct nl_msg *msg; 2542 2543 msg = nlmsg_alloc(); 2544 if (!msg) 2545 goto nla_put_failure; 2546 2547 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_PROTOCOL_FEATURES); 2548 if (send_and_recv_msgs(drv, msg, protocol_feature_handler, &feat) == 0) 2549 return feat; 2550 2551 msg = NULL; 2552nla_put_failure: 2553 nlmsg_free(msg); 2554 return 0; 2555} 2556 2557 2558struct wiphy_info_data { 2559 struct wpa_driver_nl80211_data *drv; 2560 struct wpa_driver_capa *capa; 2561 2562 unsigned int error:1; 2563 unsigned int device_ap_sme:1; 2564 unsigned int poll_command_supported:1; 2565 unsigned int data_tx_status:1; 2566 unsigned int monitor_supported:1; 2567 unsigned int auth_supported:1; 2568 unsigned int connect_supported:1; 2569 unsigned int p2p_go_supported:1; 2570 unsigned int p2p_client_supported:1; 2571 unsigned int p2p_concurrent:1; 2572 unsigned int p2p_multichan_concurrent:1; 2573}; 2574 2575 2576static unsigned int probe_resp_offload_support(int supp_protocols) 2577{ 2578 unsigned int prot = 0; 2579 2580 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS) 2581 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS; 2582 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2) 2583 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2; 2584 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P) 2585 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P; 2586 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U) 2587 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING; 2588 2589 return prot; 2590} 2591 2592 2593static void wiphy_info_supported_iftypes(struct wiphy_info_data *info, 2594 struct nlattr *tb) 2595{ 2596 struct nlattr *nl_mode; 2597 int i; 2598 2599 if (tb == NULL) 2600 return; 2601 2602 nla_for_each_nested(nl_mode, tb, i) { 2603 switch (nla_type(nl_mode)) { 2604 case NL80211_IFTYPE_AP: 2605 info->capa->flags |= WPA_DRIVER_FLAGS_AP; 2606 break; 2607 case NL80211_IFTYPE_ADHOC: 2608 info->capa->flags |= WPA_DRIVER_FLAGS_IBSS; 2609 break; 2610 case NL80211_IFTYPE_P2P_GO: 2611 info->p2p_go_supported = 1; 2612 break; 2613 case NL80211_IFTYPE_P2P_CLIENT: 2614 info->p2p_client_supported = 1; 2615 break; 2616 case NL80211_IFTYPE_MONITOR: 2617 info->monitor_supported = 1; 2618 break; 2619 } 2620 } 2621} 2622 2623 2624static int wiphy_info_iface_comb_process(struct wiphy_info_data *info, 2625 struct nlattr *nl_combi) 2626{ 2627 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB]; 2628 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT]; 2629 struct nlattr *nl_limit, *nl_mode; 2630 int err, rem_limit, rem_mode; 2631 int combination_has_p2p = 0, combination_has_mgd = 0; 2632 static struct nla_policy 2633 iface_combination_policy[NUM_NL80211_IFACE_COMB] = { 2634 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED }, 2635 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 }, 2636 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG }, 2637 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 }, 2638 }, 2639 iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = { 2640 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED }, 2641 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 }, 2642 }; 2643 2644 err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB, 2645 nl_combi, iface_combination_policy); 2646 if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] || 2647 !tb_comb[NL80211_IFACE_COMB_MAXNUM] || 2648 !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) 2649 return 0; /* broken combination */ 2650 2651 nla_for_each_nested(nl_limit, tb_comb[NL80211_IFACE_COMB_LIMITS], 2652 rem_limit) { 2653 err = nla_parse_nested(tb_limit, MAX_NL80211_IFACE_LIMIT, 2654 nl_limit, iface_limit_policy); 2655 if (err || !tb_limit[NL80211_IFACE_LIMIT_TYPES]) 2656 return 0; /* broken combination */ 2657 2658 nla_for_each_nested(nl_mode, 2659 tb_limit[NL80211_IFACE_LIMIT_TYPES], 2660 rem_mode) { 2661 int ift = nla_type(nl_mode); 2662 if (ift == NL80211_IFTYPE_P2P_GO || 2663 ift == NL80211_IFTYPE_P2P_CLIENT) 2664 combination_has_p2p = 1; 2665 if (ift == NL80211_IFTYPE_STATION) 2666 combination_has_mgd = 1; 2667 } 2668 if (combination_has_p2p && combination_has_mgd) 2669 break; 2670 } 2671 2672 if (combination_has_p2p && combination_has_mgd) { 2673 info->p2p_concurrent = 1; 2674 if (nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) > 1) 2675 info->p2p_multichan_concurrent = 1; 2676 return 1; 2677 } 2678 2679 return 0; 2680} 2681 2682 2683static void wiphy_info_iface_comb(struct wiphy_info_data *info, 2684 struct nlattr *tb) 2685{ 2686 struct nlattr *nl_combi; 2687 int rem_combi; 2688 2689 if (tb == NULL) 2690 return; 2691 2692 nla_for_each_nested(nl_combi, tb, rem_combi) { 2693 if (wiphy_info_iface_comb_process(info, nl_combi) > 0) 2694 break; 2695 } 2696} 2697 2698 2699static void wiphy_info_supp_cmds(struct wiphy_info_data *info, 2700 struct nlattr *tb) 2701{ 2702 struct nlattr *nl_cmd; 2703 int i; 2704 2705 if (tb == NULL) 2706 return; 2707 2708 nla_for_each_nested(nl_cmd, tb, i) { 2709 switch (nla_get_u32(nl_cmd)) { 2710 case NL80211_CMD_AUTHENTICATE: 2711 info->auth_supported = 1; 2712 break; 2713 case NL80211_CMD_CONNECT: 2714 info->connect_supported = 1; 2715 break; 2716 case NL80211_CMD_START_SCHED_SCAN: 2717 info->capa->sched_scan_supported = 1; 2718 break; 2719 case NL80211_CMD_PROBE_CLIENT: 2720 info->poll_command_supported = 1; 2721 break; 2722 } 2723 } 2724} 2725 2726 2727static void wiphy_info_max_roc(struct wpa_driver_capa *capa, 2728 struct nlattr *tb) 2729{ 2730 /* default to 5000 since early versions of mac80211 don't set it */ 2731 capa->max_remain_on_chan = 5000; 2732 2733 if (tb) 2734 capa->max_remain_on_chan = nla_get_u32(tb); 2735} 2736 2737 2738static void wiphy_info_tdls(struct wpa_driver_capa *capa, struct nlattr *tdls, 2739 struct nlattr *ext_setup) 2740{ 2741 if (tdls == NULL) 2742 return; 2743 2744 wpa_printf(MSG_DEBUG, "nl80211: TDLS supported"); 2745 capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT; 2746 2747 if (ext_setup) { 2748 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup"); 2749 capa->flags |= WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP; 2750 } 2751} 2752 2753 2754static void wiphy_info_feature_flags(struct wiphy_info_data *info, 2755 struct nlattr *tb) 2756{ 2757 u32 flags; 2758 struct wpa_driver_capa *capa = info->capa; 2759 2760 if (tb == NULL) 2761 return; 2762 2763 flags = nla_get_u32(tb); 2764 2765 if (flags & NL80211_FEATURE_SK_TX_STATUS) 2766 info->data_tx_status = 1; 2767 2768 if (flags & NL80211_FEATURE_INACTIVITY_TIMER) 2769 capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER; 2770 2771 if (flags & NL80211_FEATURE_SAE) 2772 capa->flags |= WPA_DRIVER_FLAGS_SAE; 2773 2774 if (flags & NL80211_FEATURE_NEED_OBSS_SCAN) 2775 capa->flags |= WPA_DRIVER_FLAGS_OBSS_SCAN; 2776} 2777 2778 2779static void wiphy_info_probe_resp_offload(struct wpa_driver_capa *capa, 2780 struct nlattr *tb) 2781{ 2782 u32 protocols; 2783 2784 if (tb == NULL) 2785 return; 2786 2787 protocols = nla_get_u32(tb); 2788 wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response offload in AP " 2789 "mode"); 2790 capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD; 2791 capa->probe_resp_offloads = probe_resp_offload_support(protocols); 2792} 2793 2794 2795static int wiphy_info_handler(struct nl_msg *msg, void *arg) 2796{ 2797 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2798 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2799 struct wiphy_info_data *info = arg; 2800 struct wpa_driver_capa *capa = info->capa; 2801 struct wpa_driver_nl80211_data *drv = info->drv; 2802 2803 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2804 genlmsg_attrlen(gnlh, 0), NULL); 2805 2806 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]) 2807 capa->max_scan_ssids = 2808 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]); 2809 2810 if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]) 2811 capa->max_sched_scan_ssids = 2812 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]); 2813 2814 if (tb[NL80211_ATTR_MAX_MATCH_SETS]) 2815 capa->max_match_sets = 2816 nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]); 2817 2818 wiphy_info_supported_iftypes(info, tb[NL80211_ATTR_SUPPORTED_IFTYPES]); 2819 wiphy_info_iface_comb(info, tb[NL80211_ATTR_INTERFACE_COMBINATIONS]); 2820 wiphy_info_supp_cmds(info, tb[NL80211_ATTR_SUPPORTED_COMMANDS]); 2821 2822 if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) { 2823 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based " 2824 "off-channel TX"); 2825 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX; 2826 } 2827 2828 if (tb[NL80211_ATTR_ROAM_SUPPORT]) { 2829 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming"); 2830 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION; 2831 } 2832 2833 wiphy_info_max_roc(capa, 2834 tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]); 2835 2836 if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD]) 2837 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD; 2838 2839 wiphy_info_tdls(capa, tb[NL80211_ATTR_TDLS_SUPPORT], 2840 tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]); 2841 2842 if (tb[NL80211_ATTR_DEVICE_AP_SME]) 2843 info->device_ap_sme = 1; 2844 2845 wiphy_info_feature_flags(info, tb[NL80211_ATTR_FEATURE_FLAGS]); 2846 wiphy_info_probe_resp_offload(capa, 2847 tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]); 2848 2849 if (tb[NL80211_ATTR_EXT_CAPA] && tb[NL80211_ATTR_EXT_CAPA_MASK] && 2850 drv->extended_capa == NULL) { 2851 drv->extended_capa = 2852 os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA])); 2853 if (drv->extended_capa) { 2854 os_memcpy(drv->extended_capa, 2855 nla_data(tb[NL80211_ATTR_EXT_CAPA]), 2856 nla_len(tb[NL80211_ATTR_EXT_CAPA])); 2857 drv->extended_capa_len = 2858 nla_len(tb[NL80211_ATTR_EXT_CAPA]); 2859 } 2860 drv->extended_capa_mask = 2861 os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA])); 2862 if (drv->extended_capa_mask) { 2863 os_memcpy(drv->extended_capa_mask, 2864 nla_data(tb[NL80211_ATTR_EXT_CAPA]), 2865 nla_len(tb[NL80211_ATTR_EXT_CAPA])); 2866 } else { 2867 os_free(drv->extended_capa); 2868 drv->extended_capa = NULL; 2869 drv->extended_capa_len = 0; 2870 } 2871 } 2872 2873 return NL_SKIP; 2874} 2875 2876 2877static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv, 2878 struct wiphy_info_data *info) 2879{ 2880 u32 feat; 2881 struct nl_msg *msg; 2882 2883 os_memset(info, 0, sizeof(*info)); 2884 info->capa = &drv->capa; 2885 info->drv = drv; 2886 2887 msg = nlmsg_alloc(); 2888 if (!msg) 2889 return -1; 2890 2891 feat = get_nl80211_protocol_features(drv); 2892 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) 2893 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_WIPHY); 2894 else 2895 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 2896 2897 NLA_PUT_FLAG(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP); 2898 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex); 2899 2900 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info)) 2901 return -1; 2902 2903 if (info->auth_supported) 2904 drv->capa.flags |= WPA_DRIVER_FLAGS_SME; 2905 else if (!info->connect_supported) { 2906 wpa_printf(MSG_INFO, "nl80211: Driver does not support " 2907 "authentication/association or connect commands"); 2908 info->error = 1; 2909 } 2910 2911 if (info->p2p_go_supported && info->p2p_client_supported) 2912 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE; 2913 if (info->p2p_concurrent) { 2914 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 2915 "interface (driver advertised support)"); 2916 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 2917 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 2918 } 2919 if (info->p2p_multichan_concurrent) { 2920 wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel " 2921 "concurrent (driver advertised support)"); 2922 drv->capa.flags |= WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT; 2923 } 2924 return 0; 2925nla_put_failure: 2926 nlmsg_free(msg); 2927 return -1; 2928} 2929 2930 2931static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv) 2932{ 2933 struct wiphy_info_data info; 2934 if (wpa_driver_nl80211_get_info(drv, &info)) 2935 return -1; 2936 2937 if (info.error) 2938 return -1; 2939 2940 drv->has_capability = 1; 2941 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */ 2942 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA | 2943 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK | 2944 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | 2945 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK; 2946 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 | 2947 WPA_DRIVER_CAPA_ENC_WEP104 | 2948 WPA_DRIVER_CAPA_ENC_TKIP | 2949 WPA_DRIVER_CAPA_ENC_CCMP; 2950 drv->capa.auth = WPA_DRIVER_AUTH_OPEN | 2951 WPA_DRIVER_AUTH_SHARED | 2952 WPA_DRIVER_AUTH_LEAP; 2953 2954 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES; 2955 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE; 2956 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 2957 2958 if (!info.device_ap_sme) { 2959 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS; 2960 2961 /* 2962 * No AP SME is currently assumed to also indicate no AP MLME 2963 * in the driver/firmware. 2964 */ 2965 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME; 2966 } 2967 2968 drv->device_ap_sme = info.device_ap_sme; 2969 drv->poll_command_supported = info.poll_command_supported; 2970 drv->data_tx_status = info.data_tx_status; 2971 2972#ifdef ANDROID_P2P 2973 if(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) { 2974 /* Driver is new enough to support monitorless mode*/ 2975 wpa_printf(MSG_DEBUG, "nl80211: Driver is new " 2976 "enough to support monitor-less mode"); 2977 drv->use_monitor = 0; 2978 } 2979#else 2980 /* 2981 * If poll command and tx status are supported, mac80211 is new enough 2982 * to have everything we need to not need monitor interfaces. 2983 */ 2984 drv->use_monitor = !info.poll_command_supported || !info.data_tx_status; 2985#endif 2986 2987 if (drv->device_ap_sme && drv->use_monitor) { 2988 /* 2989 * Non-mac80211 drivers may not support monitor interface. 2990 * Make sure we do not get stuck with incorrect capability here 2991 * by explicitly testing this. 2992 */ 2993 if (!info.monitor_supported) { 2994 wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor " 2995 "with device_ap_sme since no monitor mode " 2996 "support detected"); 2997 drv->use_monitor = 0; 2998 } 2999 } 3000 3001 /* 3002 * If we aren't going to use monitor interfaces, but the 3003 * driver doesn't support data TX status, we won't get TX 3004 * status for EAPOL frames. 3005 */ 3006 if (!drv->use_monitor && !info.data_tx_status) 3007 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 3008 3009 return 0; 3010} 3011 3012 3013#ifdef ANDROID 3014static int android_genl_ctrl_resolve(struct nl_handle *handle, 3015 const char *name) 3016{ 3017 /* 3018 * Android ICS has very minimal genl_ctrl_resolve() implementation, so 3019 * need to work around that. 3020 */ 3021 struct nl_cache *cache = NULL; 3022 struct genl_family *nl80211 = NULL; 3023 int id = -1; 3024 3025 if (genl_ctrl_alloc_cache(handle, &cache) < 0) { 3026 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic " 3027 "netlink cache"); 3028 goto fail; 3029 } 3030 3031 nl80211 = genl_ctrl_search_by_name(cache, name); 3032 if (nl80211 == NULL) 3033 goto fail; 3034 3035 id = genl_family_get_id(nl80211); 3036 3037fail: 3038 if (nl80211) 3039 genl_family_put(nl80211); 3040 if (cache) 3041 nl_cache_free(cache); 3042 3043 return id; 3044} 3045#define genl_ctrl_resolve android_genl_ctrl_resolve 3046#endif /* ANDROID */ 3047 3048 3049static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global) 3050{ 3051 int ret; 3052 3053 global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 3054 if (global->nl_cb == NULL) { 3055 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 3056 "callbacks"); 3057 return -1; 3058 } 3059 3060 global->nl = nl_create_handle(global->nl_cb, "nl"); 3061 if (global->nl == NULL) 3062 goto err; 3063 3064 global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211"); 3065 if (global->nl80211_id < 0) { 3066 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not " 3067 "found"); 3068 goto err; 3069 } 3070 3071 global->nl_event = nl_create_handle(global->nl_cb, "event"); 3072 if (global->nl_event == NULL) 3073 goto err; 3074 3075 ret = nl_get_multicast_id(global, "nl80211", "scan"); 3076 if (ret >= 0) 3077 ret = nl_socket_add_membership(global->nl_event, ret); 3078 if (ret < 0) { 3079 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 3080 "membership for scan events: %d (%s)", 3081 ret, strerror(-ret)); 3082 goto err; 3083 } 3084 3085 ret = nl_get_multicast_id(global, "nl80211", "mlme"); 3086 if (ret >= 0) 3087 ret = nl_socket_add_membership(global->nl_event, ret); 3088 if (ret < 0) { 3089 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 3090 "membership for mlme events: %d (%s)", 3091 ret, strerror(-ret)); 3092 goto err; 3093 } 3094 3095 ret = nl_get_multicast_id(global, "nl80211", "regulatory"); 3096 if (ret >= 0) 3097 ret = nl_socket_add_membership(global->nl_event, ret); 3098 if (ret < 0) { 3099 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast " 3100 "membership for regulatory events: %d (%s)", 3101 ret, strerror(-ret)); 3102 /* Continue without regulatory events */ 3103 } 3104 3105 nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 3106 no_seq_check, NULL); 3107 nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 3108 process_global_event, global); 3109 3110 eloop_register_read_sock(nl_socket_get_fd(global->nl_event), 3111 wpa_driver_nl80211_event_receive, 3112 global->nl_cb, global->nl_event); 3113 3114 return 0; 3115 3116err: 3117 nl_destroy_handles(&global->nl_event); 3118 nl_destroy_handles(&global->nl); 3119 nl_cb_put(global->nl_cb); 3120 global->nl_cb = NULL; 3121 return -1; 3122} 3123 3124 3125static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv) 3126{ 3127 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 3128 if (!drv->nl_cb) { 3129 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct"); 3130 return -1; 3131 } 3132 3133 nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 3134 no_seq_check, NULL); 3135 nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 3136 process_drv_event, drv); 3137 3138 return 0; 3139} 3140 3141 3142static void wpa_driver_nl80211_rfkill_blocked(void *ctx) 3143{ 3144 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked"); 3145 /* 3146 * This may be for any interface; use ifdown event to disable 3147 * interface. 3148 */ 3149} 3150 3151 3152static void wpa_driver_nl80211_rfkill_unblocked(void *ctx) 3153{ 3154 struct wpa_driver_nl80211_data *drv = ctx; 3155 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked"); 3156 if (linux_set_iface_flags(drv->global->ioctl_sock, 3157 drv->first_bss.ifname, 1)) { 3158 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP " 3159 "after rfkill unblock"); 3160 return; 3161 } 3162 /* rtnetlink ifup handler will report interface as enabled */ 3163} 3164 3165 3166static void nl80211_get_phy_name(struct wpa_driver_nl80211_data *drv) 3167{ 3168 /* Find phy (radio) to which this interface belongs */ 3169 char buf[90], *pos; 3170 int f, rv; 3171 3172 drv->phyname[0] = '\0'; 3173 snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name", 3174 drv->first_bss.ifname); 3175 f = open(buf, O_RDONLY); 3176 if (f < 0) { 3177 wpa_printf(MSG_DEBUG, "Could not open file %s: %s", 3178 buf, strerror(errno)); 3179 return; 3180 } 3181 3182 rv = read(f, drv->phyname, sizeof(drv->phyname) - 1); 3183 close(f); 3184 if (rv < 0) { 3185 wpa_printf(MSG_DEBUG, "Could not read file %s: %s", 3186 buf, strerror(errno)); 3187 return; 3188 } 3189 3190 drv->phyname[rv] = '\0'; 3191 pos = os_strchr(drv->phyname, '\n'); 3192 if (pos) 3193 *pos = '\0'; 3194 wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s", 3195 drv->first_bss.ifname, drv->phyname); 3196} 3197 3198 3199static void wpa_driver_nl80211_handle_eapol_tx_status(int sock, 3200 void *eloop_ctx, 3201 void *handle) 3202{ 3203 struct wpa_driver_nl80211_data *drv = eloop_ctx; 3204 u8 data[2048]; 3205 struct msghdr msg; 3206 struct iovec entry; 3207 u8 control[512]; 3208 struct cmsghdr *cmsg; 3209 int res, found_ee = 0, found_wifi = 0, acked = 0; 3210 union wpa_event_data event; 3211 3212 memset(&msg, 0, sizeof(msg)); 3213 msg.msg_iov = &entry; 3214 msg.msg_iovlen = 1; 3215 entry.iov_base = data; 3216 entry.iov_len = sizeof(data); 3217 msg.msg_control = &control; 3218 msg.msg_controllen = sizeof(control); 3219 3220 res = recvmsg(sock, &msg, MSG_ERRQUEUE); 3221 /* if error or not fitting 802.3 header, return */ 3222 if (res < 14) 3223 return; 3224 3225 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) 3226 { 3227 if (cmsg->cmsg_level == SOL_SOCKET && 3228 cmsg->cmsg_type == SCM_WIFI_STATUS) { 3229 int *ack; 3230 3231 found_wifi = 1; 3232 ack = (void *)CMSG_DATA(cmsg); 3233 acked = *ack; 3234 } 3235 3236 if (cmsg->cmsg_level == SOL_PACKET && 3237 cmsg->cmsg_type == PACKET_TX_TIMESTAMP) { 3238 struct sock_extended_err *err = 3239 (struct sock_extended_err *)CMSG_DATA(cmsg); 3240 3241 if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS) 3242 found_ee = 1; 3243 } 3244 } 3245 3246 if (!found_ee || !found_wifi) 3247 return; 3248 3249 memset(&event, 0, sizeof(event)); 3250 event.eapol_tx_status.dst = data; 3251 event.eapol_tx_status.data = data + 14; 3252 event.eapol_tx_status.data_len = res - 14; 3253 event.eapol_tx_status.ack = acked; 3254 wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event); 3255} 3256 3257 3258static int nl80211_init_bss(struct i802_bss *bss) 3259{ 3260 bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 3261 if (!bss->nl_cb) 3262 return -1; 3263 3264 nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 3265 no_seq_check, NULL); 3266 nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 3267 process_bss_event, bss); 3268 3269 return 0; 3270} 3271 3272 3273static void nl80211_destroy_bss(struct i802_bss *bss) 3274{ 3275 nl_cb_put(bss->nl_cb); 3276 bss->nl_cb = NULL; 3277} 3278 3279 3280/** 3281 * wpa_driver_nl80211_init - Initialize nl80211 driver interface 3282 * @ctx: context to be used when calling wpa_supplicant functions, 3283 * e.g., wpa_supplicant_event() 3284 * @ifname: interface name, e.g., wlan0 3285 * @global_priv: private driver global data from global_init() 3286 * Returns: Pointer to private data, %NULL on failure 3287 */ 3288static void * wpa_driver_nl80211_init(void *ctx, const char *ifname, 3289 void *global_priv) 3290{ 3291 struct wpa_driver_nl80211_data *drv; 3292 struct rfkill_config *rcfg; 3293 struct i802_bss *bss; 3294 3295 if (global_priv == NULL) 3296 return NULL; 3297 drv = os_zalloc(sizeof(*drv)); 3298 if (drv == NULL) 3299 return NULL; 3300 drv->global = global_priv; 3301 drv->ctx = ctx; 3302 bss = &drv->first_bss; 3303 bss->drv = drv; 3304 bss->ctx = ctx; 3305 3306 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname)); 3307 drv->monitor_ifidx = -1; 3308 drv->monitor_sock = -1; 3309 drv->eapol_tx_sock = -1; 3310 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 3311 3312 if (wpa_driver_nl80211_init_nl(drv)) { 3313 os_free(drv); 3314 return NULL; 3315 } 3316 3317 if (nl80211_init_bss(bss)) 3318 goto failed; 3319 3320 nl80211_get_phy_name(drv); 3321 3322 rcfg = os_zalloc(sizeof(*rcfg)); 3323 if (rcfg == NULL) 3324 goto failed; 3325 rcfg->ctx = drv; 3326 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname)); 3327 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked; 3328 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked; 3329 drv->rfkill = rfkill_init(rcfg); 3330 if (drv->rfkill == NULL) { 3331 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available"); 3332 os_free(rcfg); 3333 } 3334 3335 if (wpa_driver_nl80211_finish_drv_init(drv)) 3336 goto failed; 3337 3338 drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0); 3339 if (drv->eapol_tx_sock < 0) 3340 goto failed; 3341 3342 if (drv->data_tx_status) { 3343 int enabled = 1; 3344 3345 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS, 3346 &enabled, sizeof(enabled)) < 0) { 3347 wpa_printf(MSG_DEBUG, 3348 "nl80211: wifi status sockopt failed\n"); 3349 drv->data_tx_status = 0; 3350 if (!drv->use_monitor) 3351 drv->capa.flags &= 3352 ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 3353 } else { 3354 eloop_register_read_sock(drv->eapol_tx_sock, 3355 wpa_driver_nl80211_handle_eapol_tx_status, 3356 drv, NULL); 3357 } 3358 } 3359 3360 if (drv->global) { 3361 dl_list_add(&drv->global->interfaces, &drv->list); 3362 drv->in_interface_list = 1; 3363 } 3364 3365 return bss; 3366 3367failed: 3368 wpa_driver_nl80211_deinit(bss); 3369 return NULL; 3370} 3371 3372 3373static int nl80211_register_frame(struct i802_bss *bss, 3374 struct nl_handle *nl_handle, 3375 u16 type, const u8 *match, size_t match_len) 3376{ 3377 struct wpa_driver_nl80211_data *drv = bss->drv; 3378 struct nl_msg *msg; 3379 int ret = -1; 3380 3381 msg = nlmsg_alloc(); 3382 if (!msg) 3383 return -1; 3384 3385 wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x nl_handle=%p", 3386 type, nl_handle); 3387 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 3388 match, match_len); 3389 3390 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION); 3391 3392 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 3393 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type); 3394 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match); 3395 3396 ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL); 3397 msg = NULL; 3398 if (ret) { 3399 wpa_printf(MSG_DEBUG, "nl80211: Register frame command " 3400 "failed (type=%u): ret=%d (%s)", 3401 type, ret, strerror(-ret)); 3402 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 3403 match, match_len); 3404 goto nla_put_failure; 3405 } 3406 ret = 0; 3407nla_put_failure: 3408 nlmsg_free(msg); 3409 return ret; 3410} 3411 3412 3413static int nl80211_alloc_mgmt_handle(struct i802_bss *bss) 3414{ 3415 struct wpa_driver_nl80211_data *drv = bss->drv; 3416 3417 if (bss->nl_mgmt) { 3418 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting " 3419 "already on! (nl_mgmt=%p)", bss->nl_mgmt); 3420 return -1; 3421 } 3422 3423 bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt"); 3424 if (bss->nl_mgmt == NULL) 3425 return -1; 3426 3427 eloop_register_read_sock(nl_socket_get_fd(bss->nl_mgmt), 3428 wpa_driver_nl80211_event_receive, bss->nl_cb, 3429 bss->nl_mgmt); 3430 3431 return 0; 3432} 3433 3434 3435static int nl80211_register_action_frame(struct i802_bss *bss, 3436 const u8 *match, size_t match_len) 3437{ 3438 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4); 3439 return nl80211_register_frame(bss, bss->nl_mgmt, 3440 type, match, match_len); 3441} 3442 3443 3444static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss) 3445{ 3446 struct wpa_driver_nl80211_data *drv = bss->drv; 3447 3448 if (nl80211_alloc_mgmt_handle(bss)) 3449 return -1; 3450 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP " 3451 "handle %p", bss->nl_mgmt); 3452 3453#if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING) 3454 /* GAS Initial Request */ 3455 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0) 3456 return -1; 3457 /* GAS Initial Response */ 3458 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0) 3459 return -1; 3460 /* GAS Comeback Request */ 3461 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0) 3462 return -1; 3463 /* GAS Comeback Response */ 3464 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0) 3465 return -1; 3466#endif /* CONFIG_P2P || CONFIG_INTERWORKING */ 3467#ifdef CONFIG_P2P 3468 /* P2P Public Action */ 3469 if (nl80211_register_action_frame(bss, 3470 (u8 *) "\x04\x09\x50\x6f\x9a\x09", 3471 6) < 0) 3472 return -1; 3473 /* P2P Action */ 3474 if (nl80211_register_action_frame(bss, 3475 (u8 *) "\x7f\x50\x6f\x9a\x09", 3476 5) < 0) 3477 return -1; 3478#endif /* CONFIG_P2P */ 3479#ifdef CONFIG_IEEE80211W 3480 /* SA Query Response */ 3481 if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0) 3482 return -1; 3483#endif /* CONFIG_IEEE80211W */ 3484#ifdef CONFIG_TDLS 3485 if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) { 3486 /* TDLS Discovery Response */ 3487 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) < 3488 0) 3489 return -1; 3490 } 3491#endif /* CONFIG_TDLS */ 3492 3493 /* FT Action frames */ 3494 if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0) 3495 return -1; 3496 else 3497 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT | 3498 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK; 3499 3500 /* WNM - BSS Transition Management Request */ 3501 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0) 3502 return -1; 3503 /* WNM-Sleep Mode Response */ 3504 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0) 3505 return -1; 3506 3507 return 0; 3508} 3509 3510 3511static int nl80211_register_spurious_class3(struct i802_bss *bss) 3512{ 3513 struct wpa_driver_nl80211_data *drv = bss->drv; 3514 struct nl_msg *msg; 3515 int ret = -1; 3516 3517 msg = nlmsg_alloc(); 3518 if (!msg) 3519 return -1; 3520 3521 nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME); 3522 3523 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 3524 3525 ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL); 3526 msg = NULL; 3527 if (ret) { 3528 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 " 3529 "failed: ret=%d (%s)", 3530 ret, strerror(-ret)); 3531 goto nla_put_failure; 3532 } 3533 ret = 0; 3534nla_put_failure: 3535 nlmsg_free(msg); 3536 return ret; 3537} 3538 3539 3540static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss) 3541{ 3542 static const int stypes[] = { 3543 WLAN_FC_STYPE_AUTH, 3544 WLAN_FC_STYPE_ASSOC_REQ, 3545 WLAN_FC_STYPE_REASSOC_REQ, 3546 WLAN_FC_STYPE_DISASSOC, 3547 WLAN_FC_STYPE_DEAUTH, 3548 WLAN_FC_STYPE_ACTION, 3549 WLAN_FC_STYPE_PROBE_REQ, 3550/* Beacon doesn't work as mac80211 doesn't currently allow 3551 * it, but it wouldn't really be the right thing anyway as 3552 * it isn't per interface ... maybe just dump the scan 3553 * results periodically for OLBC? 3554 */ 3555// WLAN_FC_STYPE_BEACON, 3556 }; 3557 unsigned int i; 3558 3559 if (nl80211_alloc_mgmt_handle(bss)) 3560 return -1; 3561 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 3562 "handle %p", bss->nl_mgmt); 3563 3564 for (i = 0; i < sizeof(stypes) / sizeof(stypes[0]); i++) { 3565 if (nl80211_register_frame(bss, bss->nl_mgmt, 3566 (WLAN_FC_TYPE_MGMT << 2) | 3567 (stypes[i] << 4), 3568 NULL, 0) < 0) { 3569 goto out_err; 3570 } 3571 } 3572 3573 if (nl80211_register_spurious_class3(bss)) 3574 goto out_err; 3575 3576 if (nl80211_get_wiphy_data_ap(bss) == NULL) 3577 goto out_err; 3578 3579 return 0; 3580 3581out_err: 3582 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3583 nl_destroy_handles(&bss->nl_mgmt); 3584 return -1; 3585} 3586 3587 3588static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss) 3589{ 3590 if (nl80211_alloc_mgmt_handle(bss)) 3591 return -1; 3592 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 3593 "handle %p (device SME)", bss->nl_mgmt); 3594 3595 if (nl80211_register_frame(bss, bss->nl_mgmt, 3596 (WLAN_FC_TYPE_MGMT << 2) | 3597 (WLAN_FC_STYPE_ACTION << 4), 3598 NULL, 0) < 0) 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 void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason) 3611{ 3612 if (bss->nl_mgmt == NULL) 3613 return; 3614 wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p " 3615 "(%s)", bss->nl_mgmt, reason); 3616 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3617 nl_destroy_handles(&bss->nl_mgmt); 3618 3619 nl80211_put_wiphy_data_ap(bss); 3620} 3621 3622 3623static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx) 3624{ 3625 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL); 3626} 3627 3628 3629static int 3630wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv) 3631{ 3632 struct i802_bss *bss = &drv->first_bss; 3633 int send_rfkill_event = 0; 3634 3635 drv->ifindex = if_nametoindex(bss->ifname); 3636 drv->first_bss.ifindex = drv->ifindex; 3637 3638#ifndef HOSTAPD 3639 /* 3640 * Make sure the interface starts up in station mode unless this is a 3641 * dynamically added interface (e.g., P2P) that was already configured 3642 * with proper iftype. 3643 */ 3644 if (drv->ifindex != drv->global->if_add_ifindex && 3645 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION) < 0) { 3646 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver to " 3647 "use managed mode"); 3648 return -1; 3649 } 3650 3651 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { 3652 if (rfkill_is_blocked(drv->rfkill)) { 3653 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable " 3654 "interface '%s' due to rfkill", 3655 bss->ifname); 3656 drv->if_disabled = 1; 3657 send_rfkill_event = 1; 3658 } else { 3659 wpa_printf(MSG_ERROR, "nl80211: Could not set " 3660 "interface '%s' UP", bss->ifname); 3661 return -1; 3662 } 3663 } 3664 3665 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 3666 1, IF_OPER_DORMANT); 3667#endif /* HOSTAPD */ 3668 3669 if (wpa_driver_nl80211_capa(drv)) 3670 return -1; 3671 3672 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 3673 bss->addr)) 3674 return -1; 3675 3676 if (send_rfkill_event) { 3677 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill, 3678 drv, drv->ctx); 3679 } 3680 3681 return 0; 3682} 3683 3684 3685static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv) 3686{ 3687 struct nl_msg *msg; 3688 3689 msg = nlmsg_alloc(); 3690 if (!msg) 3691 return -ENOMEM; 3692 3693 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON); 3694 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3695 3696 return send_and_recv_msgs(drv, msg, NULL, NULL); 3697 nla_put_failure: 3698 nlmsg_free(msg); 3699 return -ENOBUFS; 3700} 3701 3702 3703/** 3704 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface 3705 * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init() 3706 * 3707 * Shut down driver interface and processing of driver events. Free 3708 * private data buffer if one was allocated in wpa_driver_nl80211_init(). 3709 */ 3710static void wpa_driver_nl80211_deinit(struct i802_bss *bss) 3711{ 3712 struct wpa_driver_nl80211_data *drv = bss->drv; 3713 3714 bss->in_deinit = 1; 3715 if (drv->data_tx_status) 3716 eloop_unregister_read_sock(drv->eapol_tx_sock); 3717 if (drv->eapol_tx_sock >= 0) 3718 close(drv->eapol_tx_sock); 3719 3720 if (bss->nl_preq) 3721 wpa_driver_nl80211_probe_req_report(bss, 0); 3722 if (bss->added_if_into_bridge) { 3723 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 3724 bss->ifname) < 0) 3725 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 3726 "interface %s from bridge %s: %s", 3727 bss->ifname, bss->brname, strerror(errno)); 3728 } 3729 if (bss->added_bridge) { 3730 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 3731 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 3732 "bridge %s: %s", 3733 bss->brname, strerror(errno)); 3734 } 3735 3736 nl80211_remove_monitor_interface(drv); 3737 3738 if (is_ap_interface(drv->nlmode)) 3739 wpa_driver_nl80211_del_beacon(drv); 3740 3741#ifdef HOSTAPD 3742 if (drv->last_freq_ht) { 3743 /* Clear HT flags from the driver */ 3744 struct hostapd_freq_params freq; 3745 os_memset(&freq, 0, sizeof(freq)); 3746 freq.freq = drv->last_freq; 3747 wpa_driver_nl80211_set_freq(bss, &freq); 3748 } 3749 3750 if (drv->eapol_sock >= 0) { 3751 eloop_unregister_read_sock(drv->eapol_sock); 3752 close(drv->eapol_sock); 3753 } 3754 3755 if (drv->if_indices != drv->default_if_indices) 3756 os_free(drv->if_indices); 3757#endif /* HOSTAPD */ 3758 3759 if (drv->disabled_11b_rates) 3760 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 3761 3762 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0, 3763 IF_OPER_UP); 3764 rfkill_deinit(drv->rfkill); 3765 3766 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 3767 3768 (void) linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0); 3769 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION); 3770 nl80211_mgmt_unsubscribe(bss, "deinit"); 3771 3772 nl_cb_put(drv->nl_cb); 3773 3774 nl80211_destroy_bss(&drv->first_bss); 3775 3776 os_free(drv->filter_ssids); 3777 3778 os_free(drv->auth_ie); 3779 3780 if (drv->in_interface_list) 3781 dl_list_del(&drv->list); 3782 3783 os_free(drv->extended_capa); 3784 os_free(drv->extended_capa_mask); 3785 os_free(drv); 3786} 3787 3788 3789/** 3790 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion 3791 * @eloop_ctx: Driver private data 3792 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init() 3793 * 3794 * This function can be used as registered timeout when starting a scan to 3795 * generate a scan completed event if the driver does not report this. 3796 */ 3797static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx) 3798{ 3799 struct wpa_driver_nl80211_data *drv = eloop_ctx; 3800 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) { 3801 wpa_driver_nl80211_set_mode(&drv->first_bss, 3802 drv->ap_scan_as_station); 3803 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 3804 } 3805 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results"); 3806 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL); 3807} 3808 3809 3810static struct nl_msg * 3811nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd, 3812 struct wpa_driver_scan_params *params) 3813{ 3814 struct nl_msg *msg; 3815 size_t i; 3816 3817 msg = nlmsg_alloc(); 3818 if (!msg) 3819 return NULL; 3820 3821 nl80211_cmd(drv, msg, 0, cmd); 3822 3823 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) < 0) 3824 goto fail; 3825 3826 if (params->num_ssids) { 3827 struct nlattr *ssids; 3828 3829 ssids = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 3830 if (ssids == NULL) 3831 goto fail; 3832 for (i = 0; i < params->num_ssids; i++) { 3833 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID", 3834 params->ssids[i].ssid, 3835 params->ssids[i].ssid_len); 3836 if (nla_put(msg, i + 1, params->ssids[i].ssid_len, 3837 params->ssids[i].ssid) < 0) 3838 goto fail; 3839 } 3840 nla_nest_end(msg, ssids); 3841 } 3842 3843 if (params->extra_ies) { 3844 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs", 3845 params->extra_ies, params->extra_ies_len); 3846 if (nla_put(msg, NL80211_ATTR_IE, params->extra_ies_len, 3847 params->extra_ies) < 0) 3848 goto fail; 3849 } 3850 3851 if (params->freqs) { 3852 struct nlattr *freqs; 3853 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 3854 if (freqs == NULL) 3855 goto fail; 3856 for (i = 0; params->freqs[i]; i++) { 3857 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u " 3858 "MHz", params->freqs[i]); 3859 if (nla_put_u32(msg, i + 1, params->freqs[i]) < 0) 3860 goto fail; 3861 } 3862 nla_nest_end(msg, freqs); 3863 } 3864 3865 os_free(drv->filter_ssids); 3866 drv->filter_ssids = params->filter_ssids; 3867 params->filter_ssids = NULL; 3868 drv->num_filter_ssids = params->num_filter_ssids; 3869 3870 return msg; 3871 3872fail: 3873 nlmsg_free(msg); 3874 return NULL; 3875} 3876 3877 3878/** 3879 * wpa_driver_nl80211_scan - Request the driver to initiate scan 3880 * @bss: Pointer to private driver data from wpa_driver_nl80211_init() 3881 * @params: Scan parameters 3882 * Returns: 0 on success, -1 on failure 3883 */ 3884static int wpa_driver_nl80211_scan(struct i802_bss *bss, 3885 struct wpa_driver_scan_params *params) 3886{ 3887 struct wpa_driver_nl80211_data *drv = bss->drv; 3888 int ret = -1, timeout; 3889 struct nl_msg *msg = NULL; 3890 3891 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: scan request"); 3892 drv->scan_for_auth = 0; 3893 3894 msg = nl80211_scan_common(drv, NL80211_CMD_TRIGGER_SCAN, params); 3895 if (!msg) 3896 return -1; 3897 3898 if (params->p2p_probe) { 3899 struct nlattr *rates; 3900 3901 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates"); 3902 3903 rates = nla_nest_start(msg, NL80211_ATTR_SCAN_SUPP_RATES); 3904 if (rates == NULL) 3905 goto nla_put_failure; 3906 3907 /* 3908 * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates 3909 * by masking out everything else apart from the OFDM rates 6, 3910 * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz 3911 * rates are left enabled. 3912 */ 3913 NLA_PUT(msg, NL80211_BAND_2GHZ, 8, 3914 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 3915 nla_nest_end(msg, rates); 3916 3917 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 3918 } 3919 3920 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3921 msg = NULL; 3922 if (ret) { 3923 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d " 3924 "(%s)", ret, strerror(-ret)); 3925#ifdef HOSTAPD 3926 if (is_ap_interface(drv->nlmode)) { 3927 /* 3928 * mac80211 does not allow scan requests in AP mode, so 3929 * try to do this in station mode. 3930 */ 3931 if (wpa_driver_nl80211_set_mode( 3932 bss, NL80211_IFTYPE_STATION)) 3933 goto nla_put_failure; 3934 3935 if (wpa_driver_nl80211_scan(bss, params)) { 3936 wpa_driver_nl80211_set_mode(bss, drv->nlmode); 3937 goto nla_put_failure; 3938 } 3939 3940 /* Restore AP mode when processing scan results */ 3941 drv->ap_scan_as_station = drv->nlmode; 3942 ret = 0; 3943 } else 3944 goto nla_put_failure; 3945#else /* HOSTAPD */ 3946 goto nla_put_failure; 3947#endif /* HOSTAPD */ 3948 } 3949 3950 /* Not all drivers generate "scan completed" wireless event, so try to 3951 * read results after a timeout. */ 3952 timeout = 10; 3953 if (drv->scan_complete_events) { 3954 /* 3955 * The driver seems to deliver events to notify when scan is 3956 * complete, so use longer timeout to avoid race conditions 3957 * with scanning and following association request. 3958 */ 3959 timeout = 30; 3960 } 3961 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d " 3962 "seconds", ret, timeout); 3963 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 3964 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout, 3965 drv, drv->ctx); 3966 3967nla_put_failure: 3968 nlmsg_free(msg); 3969 return ret; 3970} 3971 3972 3973/** 3974 * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan 3975 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 3976 * @params: Scan parameters 3977 * @interval: Interval between scan cycles in milliseconds 3978 * Returns: 0 on success, -1 on failure or if not supported 3979 */ 3980static int wpa_driver_nl80211_sched_scan(void *priv, 3981 struct wpa_driver_scan_params *params, 3982 u32 interval) 3983{ 3984 struct i802_bss *bss = priv; 3985 struct wpa_driver_nl80211_data *drv = bss->drv; 3986 int ret = -1; 3987 struct nl_msg *msg; 3988 size_t i; 3989 3990 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: sched_scan request"); 3991 3992#ifdef ANDROID 3993 if (!drv->capa.sched_scan_supported) 3994 return android_pno_start(bss, params); 3995#endif /* ANDROID */ 3996 3997 msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params); 3998 if (!msg) 3999 goto nla_put_failure; 4000 4001 NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval); 4002 4003 if ((drv->num_filter_ssids && 4004 (int) drv->num_filter_ssids <= drv->capa.max_match_sets) || 4005 params->filter_rssi) { 4006 struct nlattr *match_sets; 4007 match_sets = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH); 4008 if (match_sets == NULL) 4009 goto nla_put_failure; 4010 4011 for (i = 0; i < drv->num_filter_ssids; i++) { 4012 struct nlattr *match_set_ssid; 4013 wpa_hexdump_ascii(MSG_MSGDUMP, 4014 "nl80211: Sched scan filter SSID", 4015 drv->filter_ssids[i].ssid, 4016 drv->filter_ssids[i].ssid_len); 4017 4018 match_set_ssid = nla_nest_start(msg, i + 1); 4019 if (match_set_ssid == NULL) 4020 goto nla_put_failure; 4021 NLA_PUT(msg, NL80211_ATTR_SCHED_SCAN_MATCH_SSID, 4022 drv->filter_ssids[i].ssid_len, 4023 drv->filter_ssids[i].ssid); 4024 4025 nla_nest_end(msg, match_sets); 4026 } 4027 4028 if (params->filter_rssi) { 4029 struct nlattr *match_set_rssi; 4030 match_set_rssi = nla_nest_start(msg, 0); 4031 if (match_set_rssi == NULL) 4032 goto nla_put_failure; 4033 NLA_PUT_U32(msg, NL80211_SCHED_SCAN_MATCH_ATTR_RSSI, 4034 params->filter_rssi); 4035 wpa_printf(MSG_MSGDUMP, 4036 "nl80211: Sched scan RSSI filter %d dBm", 4037 params->filter_rssi); 4038 nla_nest_end(msg, match_set_rssi); 4039 } 4040 4041 nla_nest_end(msg, match_sets); 4042 } 4043 4044 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4045 4046 /* TODO: if we get an error here, we should fall back to normal scan */ 4047 4048 msg = NULL; 4049 if (ret) { 4050 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: " 4051 "ret=%d (%s)", ret, strerror(-ret)); 4052 goto nla_put_failure; 4053 } 4054 4055 wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - " 4056 "scan interval %d msec", ret, interval); 4057 4058nla_put_failure: 4059 nlmsg_free(msg); 4060 return ret; 4061} 4062 4063 4064/** 4065 * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan 4066 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 4067 * Returns: 0 on success, -1 on failure or if not supported 4068 */ 4069static int wpa_driver_nl80211_stop_sched_scan(void *priv) 4070{ 4071 struct i802_bss *bss = priv; 4072 struct wpa_driver_nl80211_data *drv = bss->drv; 4073 int ret = 0; 4074 struct nl_msg *msg; 4075 4076#ifdef ANDROID 4077 if (!drv->capa.sched_scan_supported) 4078 return android_pno_stop(bss); 4079#endif /* ANDROID */ 4080 4081 msg = nlmsg_alloc(); 4082 if (!msg) 4083 return -1; 4084 4085 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN); 4086 4087 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4088 4089 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4090 msg = NULL; 4091 if (ret) { 4092 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: " 4093 "ret=%d (%s)", ret, strerror(-ret)); 4094 goto nla_put_failure; 4095 } 4096 4097 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret); 4098 4099nla_put_failure: 4100 nlmsg_free(msg); 4101 return ret; 4102} 4103 4104 4105static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie) 4106{ 4107 const u8 *end, *pos; 4108 4109 if (ies == NULL) 4110 return NULL; 4111 4112 pos = ies; 4113 end = ies + ies_len; 4114 4115 while (pos + 1 < end) { 4116 if (pos + 2 + pos[1] > end) 4117 break; 4118 if (pos[0] == ie) 4119 return pos; 4120 pos += 2 + pos[1]; 4121 } 4122 4123 return NULL; 4124} 4125 4126 4127static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv, 4128 const u8 *ie, size_t ie_len) 4129{ 4130 const u8 *ssid; 4131 size_t i; 4132 4133 if (drv->filter_ssids == NULL) 4134 return 0; 4135 4136 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID); 4137 if (ssid == NULL) 4138 return 1; 4139 4140 for (i = 0; i < drv->num_filter_ssids; i++) { 4141 if (ssid[1] == drv->filter_ssids[i].ssid_len && 4142 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) == 4143 0) 4144 return 0; 4145 } 4146 4147 return 1; 4148} 4149 4150 4151static int bss_info_handler(struct nl_msg *msg, void *arg) 4152{ 4153 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 4154 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 4155 struct nlattr *bss[NL80211_BSS_MAX + 1]; 4156 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { 4157 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC }, 4158 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, 4159 [NL80211_BSS_TSF] = { .type = NLA_U64 }, 4160 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 }, 4161 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 }, 4162 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC }, 4163 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 }, 4164 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 }, 4165 [NL80211_BSS_STATUS] = { .type = NLA_U32 }, 4166 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 }, 4167 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC }, 4168 }; 4169 struct nl80211_bss_info_arg *_arg = arg; 4170 struct wpa_scan_results *res = _arg->res; 4171 struct wpa_scan_res **tmp; 4172 struct wpa_scan_res *r; 4173 const u8 *ie, *beacon_ie; 4174 size_t ie_len, beacon_ie_len; 4175 u8 *pos; 4176 size_t i; 4177 4178 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 4179 genlmsg_attrlen(gnlh, 0), NULL); 4180 if (!tb[NL80211_ATTR_BSS]) 4181 return NL_SKIP; 4182 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS], 4183 bss_policy)) 4184 return NL_SKIP; 4185 if (bss[NL80211_BSS_STATUS]) { 4186 enum nl80211_bss_status status; 4187 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 4188 if (status == NL80211_BSS_STATUS_ASSOCIATED && 4189 bss[NL80211_BSS_FREQUENCY]) { 4190 _arg->assoc_freq = 4191 nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 4192 wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz", 4193 _arg->assoc_freq); 4194 } 4195 if (status == NL80211_BSS_STATUS_ASSOCIATED && 4196 bss[NL80211_BSS_BSSID]) { 4197 os_memcpy(_arg->assoc_bssid, 4198 nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN); 4199 wpa_printf(MSG_DEBUG, "nl80211: Associated with " 4200 MACSTR, MAC2STR(_arg->assoc_bssid)); 4201 } 4202 } 4203 if (!res) 4204 return NL_SKIP; 4205 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) { 4206 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 4207 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 4208 } else { 4209 ie = NULL; 4210 ie_len = 0; 4211 } 4212 if (bss[NL80211_BSS_BEACON_IES]) { 4213 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]); 4214 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]); 4215 } else { 4216 beacon_ie = NULL; 4217 beacon_ie_len = 0; 4218 } 4219 4220 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie, 4221 ie ? ie_len : beacon_ie_len)) 4222 return NL_SKIP; 4223 4224 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len); 4225 if (r == NULL) 4226 return NL_SKIP; 4227 if (bss[NL80211_BSS_BSSID]) 4228 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]), 4229 ETH_ALEN); 4230 if (bss[NL80211_BSS_FREQUENCY]) 4231 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 4232 if (bss[NL80211_BSS_BEACON_INTERVAL]) 4233 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]); 4234 if (bss[NL80211_BSS_CAPABILITY]) 4235 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]); 4236 r->flags |= WPA_SCAN_NOISE_INVALID; 4237 if (bss[NL80211_BSS_SIGNAL_MBM]) { 4238 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]); 4239 r->level /= 100; /* mBm to dBm */ 4240 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID; 4241 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) { 4242 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]); 4243 r->flags |= WPA_SCAN_QUAL_INVALID; 4244 } else 4245 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID; 4246 if (bss[NL80211_BSS_TSF]) 4247 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]); 4248 if (bss[NL80211_BSS_SEEN_MS_AGO]) 4249 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]); 4250 r->ie_len = ie_len; 4251 pos = (u8 *) (r + 1); 4252 if (ie) { 4253 os_memcpy(pos, ie, ie_len); 4254 pos += ie_len; 4255 } 4256 r->beacon_ie_len = beacon_ie_len; 4257 if (beacon_ie) 4258 os_memcpy(pos, beacon_ie, beacon_ie_len); 4259 4260 if (bss[NL80211_BSS_STATUS]) { 4261 enum nl80211_bss_status status; 4262 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 4263 switch (status) { 4264 case NL80211_BSS_STATUS_AUTHENTICATED: 4265 r->flags |= WPA_SCAN_AUTHENTICATED; 4266 break; 4267 case NL80211_BSS_STATUS_ASSOCIATED: 4268 r->flags |= WPA_SCAN_ASSOCIATED; 4269 break; 4270 default: 4271 break; 4272 } 4273 } 4274 4275 /* 4276 * cfg80211 maintains separate BSS table entries for APs if the same 4277 * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does 4278 * not use frequency as a separate key in the BSS table, so filter out 4279 * duplicated entries. Prefer associated BSS entry in such a case in 4280 * order to get the correct frequency into the BSS table. 4281 */ 4282 for (i = 0; i < res->num; i++) { 4283 const u8 *s1, *s2; 4284 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0) 4285 continue; 4286 4287 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1), 4288 res->res[i]->ie_len, WLAN_EID_SSID); 4289 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID); 4290 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] || 4291 os_memcmp(s1, s2, 2 + s1[1]) != 0) 4292 continue; 4293 4294 /* Same BSSID,SSID was already included in scan results */ 4295 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result " 4296 "for " MACSTR, MAC2STR(r->bssid)); 4297 4298 if ((r->flags & WPA_SCAN_ASSOCIATED) && 4299 !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) { 4300 os_free(res->res[i]); 4301 res->res[i] = r; 4302 } else 4303 os_free(r); 4304 return NL_SKIP; 4305 } 4306 4307 tmp = os_realloc_array(res->res, res->num + 1, 4308 sizeof(struct wpa_scan_res *)); 4309 if (tmp == NULL) { 4310 os_free(r); 4311 return NL_SKIP; 4312 } 4313 tmp[res->num++] = r; 4314 res->res = tmp; 4315 4316 return NL_SKIP; 4317} 4318 4319 4320static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv, 4321 const u8 *addr) 4322{ 4323 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 4324 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state " 4325 "mismatch (" MACSTR ")", MAC2STR(addr)); 4326 wpa_driver_nl80211_mlme(drv, addr, 4327 NL80211_CMD_DEAUTHENTICATE, 4328 WLAN_REASON_PREV_AUTH_NOT_VALID, 1); 4329 } 4330} 4331 4332 4333static void wpa_driver_nl80211_check_bss_status( 4334 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res) 4335{ 4336 size_t i; 4337 4338 for (i = 0; i < res->num; i++) { 4339 struct wpa_scan_res *r = res->res[i]; 4340 if (r->flags & WPA_SCAN_AUTHENTICATED) { 4341 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 4342 "indicates BSS status with " MACSTR 4343 " as authenticated", 4344 MAC2STR(r->bssid)); 4345 if (is_sta_interface(drv->nlmode) && 4346 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 && 4347 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) != 4348 0) { 4349 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID" 4350 " in local state (auth=" MACSTR 4351 " assoc=" MACSTR ")", 4352 MAC2STR(drv->auth_bssid), 4353 MAC2STR(drv->bssid)); 4354 clear_state_mismatch(drv, r->bssid); 4355 } 4356 } 4357 4358 if (r->flags & WPA_SCAN_ASSOCIATED) { 4359 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 4360 "indicate BSS status with " MACSTR 4361 " as associated", 4362 MAC2STR(r->bssid)); 4363 if (is_sta_interface(drv->nlmode) && 4364 !drv->associated) { 4365 wpa_printf(MSG_DEBUG, "nl80211: Local state " 4366 "(not associated) does not match " 4367 "with BSS state"); 4368 clear_state_mismatch(drv, r->bssid); 4369 } else if (is_sta_interface(drv->nlmode) && 4370 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) != 4371 0) { 4372 wpa_printf(MSG_DEBUG, "nl80211: Local state " 4373 "(associated with " MACSTR ") does " 4374 "not match with BSS state", 4375 MAC2STR(drv->bssid)); 4376 clear_state_mismatch(drv, r->bssid); 4377 clear_state_mismatch(drv, drv->bssid); 4378 } 4379 } 4380 } 4381} 4382 4383 4384static struct wpa_scan_results * 4385nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv) 4386{ 4387 struct nl_msg *msg; 4388 struct wpa_scan_results *res; 4389 int ret; 4390 struct nl80211_bss_info_arg arg; 4391 4392 res = os_zalloc(sizeof(*res)); 4393 if (res == NULL) 4394 return NULL; 4395 msg = nlmsg_alloc(); 4396 if (!msg) 4397 goto nla_put_failure; 4398 4399 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 4400 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4401 4402 arg.drv = drv; 4403 arg.res = res; 4404 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 4405 msg = NULL; 4406 if (ret == 0) { 4407 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu " 4408 "BSSes)", (unsigned long) res->num); 4409 nl80211_get_noise_for_scan_results(drv, res); 4410 return res; 4411 } 4412 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 4413 "(%s)", ret, strerror(-ret)); 4414nla_put_failure: 4415 nlmsg_free(msg); 4416 wpa_scan_results_free(res); 4417 return NULL; 4418} 4419 4420 4421/** 4422 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results 4423 * @priv: Pointer to private wext data from wpa_driver_nl80211_init() 4424 * Returns: Scan results on success, -1 on failure 4425 */ 4426static struct wpa_scan_results * 4427wpa_driver_nl80211_get_scan_results(void *priv) 4428{ 4429 struct i802_bss *bss = priv; 4430 struct wpa_driver_nl80211_data *drv = bss->drv; 4431 struct wpa_scan_results *res; 4432 4433 res = nl80211_get_scan_results(drv); 4434 if (res) 4435 wpa_driver_nl80211_check_bss_status(drv, res); 4436 return res; 4437} 4438 4439 4440static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv) 4441{ 4442 struct wpa_scan_results *res; 4443 size_t i; 4444 4445 res = nl80211_get_scan_results(drv); 4446 if (res == NULL) { 4447 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results"); 4448 return; 4449 } 4450 4451 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump"); 4452 for (i = 0; i < res->num; i++) { 4453 struct wpa_scan_res *r = res->res[i]; 4454 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s", 4455 (int) i, (int) res->num, MAC2STR(r->bssid), 4456 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "", 4457 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : ""); 4458 } 4459 4460 wpa_scan_results_free(res); 4461} 4462 4463 4464static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss, 4465 enum wpa_alg alg, const u8 *addr, 4466 int key_idx, int set_tx, 4467 const u8 *seq, size_t seq_len, 4468 const u8 *key, size_t key_len) 4469{ 4470 struct wpa_driver_nl80211_data *drv = bss->drv; 4471 int ifindex = if_nametoindex(ifname); 4472 struct nl_msg *msg; 4473 int ret; 4474 4475 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d " 4476 "set_tx=%d seq_len=%lu key_len=%lu", 4477 __func__, ifindex, alg, addr, key_idx, set_tx, 4478 (unsigned long) seq_len, (unsigned long) key_len); 4479#ifdef CONFIG_TDLS 4480 if (key_idx == -1) 4481 key_idx = 0; 4482#endif /* CONFIG_TDLS */ 4483 4484 msg = nlmsg_alloc(); 4485 if (!msg) 4486 return -ENOMEM; 4487 4488 if (alg == WPA_ALG_NONE) { 4489 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY); 4490 } else { 4491 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY); 4492 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key); 4493 switch (alg) { 4494 case WPA_ALG_WEP: 4495 if (key_len == 5) 4496 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4497 WLAN_CIPHER_SUITE_WEP40); 4498 else 4499 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4500 WLAN_CIPHER_SUITE_WEP104); 4501 break; 4502 case WPA_ALG_TKIP: 4503 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4504 WLAN_CIPHER_SUITE_TKIP); 4505 break; 4506 case WPA_ALG_CCMP: 4507 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4508 WLAN_CIPHER_SUITE_CCMP); 4509 break; 4510 case WPA_ALG_GCMP: 4511 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4512 WLAN_CIPHER_SUITE_GCMP); 4513 break; 4514 case WPA_ALG_IGTK: 4515 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4516 WLAN_CIPHER_SUITE_AES_CMAC); 4517 break; 4518 case WPA_ALG_SMS4: 4519 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4520 WLAN_CIPHER_SUITE_SMS4); 4521 break; 4522 case WPA_ALG_KRK: 4523 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4524 WLAN_CIPHER_SUITE_KRK); 4525 break; 4526 default: 4527 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 4528 "algorithm %d", __func__, alg); 4529 nlmsg_free(msg); 4530 return -1; 4531 } 4532 } 4533 4534 if (seq && seq_len) 4535 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq); 4536 4537 if (addr && !is_broadcast_ether_addr(addr)) { 4538 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr)); 4539 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 4540 4541 if (alg != WPA_ALG_WEP && key_idx && !set_tx) { 4542 wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK"); 4543 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, 4544 NL80211_KEYTYPE_GROUP); 4545 } 4546 } else if (addr && is_broadcast_ether_addr(addr)) { 4547 struct nlattr *types; 4548 4549 wpa_printf(MSG_DEBUG, " broadcast key"); 4550 4551 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES); 4552 if (!types) 4553 goto nla_put_failure; 4554 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 4555 nla_nest_end(msg, types); 4556 } 4557 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 4558 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 4559 4560 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4561 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE) 4562 ret = 0; 4563 if (ret) 4564 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)", 4565 ret, strerror(-ret)); 4566 4567 /* 4568 * If we failed or don't need to set the default TX key (below), 4569 * we're done here. 4570 */ 4571 if (ret || !set_tx || alg == WPA_ALG_NONE) 4572 return ret; 4573 if (is_ap_interface(drv->nlmode) && addr && 4574 !is_broadcast_ether_addr(addr)) 4575 return ret; 4576 4577 msg = nlmsg_alloc(); 4578 if (!msg) 4579 return -ENOMEM; 4580 4581 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY); 4582 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 4583 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 4584 if (alg == WPA_ALG_IGTK) 4585 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT); 4586 else 4587 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT); 4588 if (addr && is_broadcast_ether_addr(addr)) { 4589 struct nlattr *types; 4590 4591 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES); 4592 if (!types) 4593 goto nla_put_failure; 4594 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 4595 nla_nest_end(msg, types); 4596 } else if (addr) { 4597 struct nlattr *types; 4598 4599 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES); 4600 if (!types) 4601 goto nla_put_failure; 4602 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST); 4603 nla_nest_end(msg, types); 4604 } 4605 4606 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4607 if (ret == -ENOENT) 4608 ret = 0; 4609 if (ret) 4610 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; " 4611 "err=%d %s)", ret, strerror(-ret)); 4612 return ret; 4613 4614nla_put_failure: 4615 nlmsg_free(msg); 4616 return -ENOBUFS; 4617} 4618 4619 4620static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg, 4621 int key_idx, int defkey, 4622 const u8 *seq, size_t seq_len, 4623 const u8 *key, size_t key_len) 4624{ 4625 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY); 4626 if (!key_attr) 4627 return -1; 4628 4629 if (defkey && alg == WPA_ALG_IGTK) 4630 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT); 4631 else if (defkey) 4632 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 4633 4634 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx); 4635 4636 switch (alg) { 4637 case WPA_ALG_WEP: 4638 if (key_len == 5) 4639 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4640 WLAN_CIPHER_SUITE_WEP40); 4641 else 4642 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4643 WLAN_CIPHER_SUITE_WEP104); 4644 break; 4645 case WPA_ALG_TKIP: 4646 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP); 4647 break; 4648 case WPA_ALG_CCMP: 4649 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP); 4650 break; 4651 case WPA_ALG_GCMP: 4652 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_GCMP); 4653 break; 4654 case WPA_ALG_IGTK: 4655 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4656 WLAN_CIPHER_SUITE_AES_CMAC); 4657 break; 4658 default: 4659 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 4660 "algorithm %d", __func__, alg); 4661 return -1; 4662 } 4663 4664 if (seq && seq_len) 4665 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq); 4666 4667 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key); 4668 4669 nla_nest_end(msg, key_attr); 4670 4671 return 0; 4672 nla_put_failure: 4673 return -1; 4674} 4675 4676 4677static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params, 4678 struct nl_msg *msg) 4679{ 4680 int i, privacy = 0; 4681 struct nlattr *nl_keys, *nl_key; 4682 4683 for (i = 0; i < 4; i++) { 4684 if (!params->wep_key[i]) 4685 continue; 4686 privacy = 1; 4687 break; 4688 } 4689 if (params->wps == WPS_MODE_PRIVACY) 4690 privacy = 1; 4691 if (params->pairwise_suite && 4692 params->pairwise_suite != WPA_CIPHER_NONE) 4693 privacy = 1; 4694 4695 if (!privacy) 4696 return 0; 4697 4698 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 4699 4700 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS); 4701 if (!nl_keys) 4702 goto nla_put_failure; 4703 4704 for (i = 0; i < 4; i++) { 4705 if (!params->wep_key[i]) 4706 continue; 4707 4708 nl_key = nla_nest_start(msg, i); 4709 if (!nl_key) 4710 goto nla_put_failure; 4711 4712 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i], 4713 params->wep_key[i]); 4714 if (params->wep_key_len[i] == 5) 4715 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4716 WLAN_CIPHER_SUITE_WEP40); 4717 else 4718 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4719 WLAN_CIPHER_SUITE_WEP104); 4720 4721 NLA_PUT_U8(msg, NL80211_KEY_IDX, i); 4722 4723 if (i == params->wep_tx_keyidx) 4724 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 4725 4726 nla_nest_end(msg, nl_key); 4727 } 4728 nla_nest_end(msg, nl_keys); 4729 4730 return 0; 4731 4732nla_put_failure: 4733 return -ENOBUFS; 4734} 4735 4736 4737static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 4738 const u8 *addr, int cmd, u16 reason_code, 4739 int local_state_change) 4740{ 4741 int ret = -1; 4742 struct nl_msg *msg; 4743 4744 msg = nlmsg_alloc(); 4745 if (!msg) 4746 return -1; 4747 4748 nl80211_cmd(drv, msg, 0, cmd); 4749 4750 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4751 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code); 4752 if (addr) 4753 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 4754 if (local_state_change) 4755 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 4756 4757 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4758 msg = NULL; 4759 if (ret) { 4760 wpa_dbg(drv->ctx, MSG_DEBUG, 4761 "nl80211: MLME command failed: reason=%u ret=%d (%s)", 4762 reason_code, ret, strerror(-ret)); 4763 goto nla_put_failure; 4764 } 4765 ret = 0; 4766 4767nla_put_failure: 4768 nlmsg_free(msg); 4769 return ret; 4770} 4771 4772 4773static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv, 4774 int reason_code) 4775{ 4776 wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code); 4777 drv->associated = 0; 4778 drv->ignore_next_local_disconnect = 0; 4779 /* Disconnect command doesn't need BSSID - it uses cached value */ 4780 return wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT, 4781 reason_code, 0); 4782} 4783 4784 4785static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss, 4786 const u8 *addr, int reason_code) 4787{ 4788 struct wpa_driver_nl80211_data *drv = bss->drv; 4789 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) 4790 return wpa_driver_nl80211_disconnect(drv, reason_code); 4791 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)", 4792 __func__, MAC2STR(addr), reason_code); 4793 drv->associated = 0; 4794 if (drv->nlmode == NL80211_IFTYPE_ADHOC) 4795 return nl80211_leave_ibss(drv); 4796 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE, 4797 reason_code, 0); 4798} 4799 4800 4801static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv, 4802 struct wpa_driver_auth_params *params) 4803{ 4804 int i; 4805 4806 drv->auth_freq = params->freq; 4807 drv->auth_alg = params->auth_alg; 4808 drv->auth_wep_tx_keyidx = params->wep_tx_keyidx; 4809 drv->auth_local_state_change = params->local_state_change; 4810 drv->auth_p2p = params->p2p; 4811 4812 if (params->bssid) 4813 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN); 4814 else 4815 os_memset(drv->auth_bssid_, 0, ETH_ALEN); 4816 4817 if (params->ssid) { 4818 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len); 4819 drv->auth_ssid_len = params->ssid_len; 4820 } else 4821 drv->auth_ssid_len = 0; 4822 4823 4824 os_free(drv->auth_ie); 4825 drv->auth_ie = NULL; 4826 drv->auth_ie_len = 0; 4827 if (params->ie) { 4828 drv->auth_ie = os_malloc(params->ie_len); 4829 if (drv->auth_ie) { 4830 os_memcpy(drv->auth_ie, params->ie, params->ie_len); 4831 drv->auth_ie_len = params->ie_len; 4832 } 4833 } 4834 4835 for (i = 0; i < 4; i++) { 4836 if (params->wep_key[i] && params->wep_key_len[i] && 4837 params->wep_key_len[i] <= 16) { 4838 os_memcpy(drv->auth_wep_key[i], params->wep_key[i], 4839 params->wep_key_len[i]); 4840 drv->auth_wep_key_len[i] = params->wep_key_len[i]; 4841 } else 4842 drv->auth_wep_key_len[i] = 0; 4843 } 4844} 4845 4846 4847static int wpa_driver_nl80211_authenticate( 4848 struct i802_bss *bss, struct wpa_driver_auth_params *params) 4849{ 4850 struct wpa_driver_nl80211_data *drv = bss->drv; 4851 int ret = -1, i; 4852 struct nl_msg *msg; 4853 enum nl80211_auth_type type; 4854 enum nl80211_iftype nlmode; 4855 int count = 0; 4856 int is_retry; 4857 4858 is_retry = drv->retry_auth; 4859 drv->retry_auth = 0; 4860 4861 drv->associated = 0; 4862 os_memset(drv->auth_bssid, 0, ETH_ALEN); 4863 /* FIX: IBSS mode */ 4864 nlmode = params->p2p ? 4865 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 4866 if (drv->nlmode != nlmode && 4867 wpa_driver_nl80211_set_mode(bss, nlmode) < 0) 4868 return -1; 4869 4870retry: 4871 msg = nlmsg_alloc(); 4872 if (!msg) 4873 return -1; 4874 4875 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)", 4876 drv->ifindex); 4877 4878 nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE); 4879 4880 for (i = 0; i < 4; i++) { 4881 if (!params->wep_key[i]) 4882 continue; 4883 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP, 4884 NULL, i, 4885 i == params->wep_tx_keyidx, NULL, 0, 4886 params->wep_key[i], 4887 params->wep_key_len[i]); 4888 if (params->wep_tx_keyidx != i) 4889 continue; 4890 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0, 4891 params->wep_key[i], params->wep_key_len[i])) { 4892 nlmsg_free(msg); 4893 return -1; 4894 } 4895 } 4896 4897 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4898 if (params->bssid) { 4899 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 4900 MAC2STR(params->bssid)); 4901 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 4902 } 4903 if (params->freq) { 4904 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 4905 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 4906 } 4907 if (params->ssid) { 4908 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 4909 params->ssid, params->ssid_len); 4910 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 4911 params->ssid); 4912 } 4913 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len); 4914 if (params->ie) 4915 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie); 4916 if (params->sae_data) { 4917 wpa_hexdump(MSG_DEBUG, " * SAE data", params->sae_data, 4918 params->sae_data_len); 4919 NLA_PUT(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len, 4920 params->sae_data); 4921 } 4922 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 4923 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 4924 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 4925 type = NL80211_AUTHTYPE_SHARED_KEY; 4926 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 4927 type = NL80211_AUTHTYPE_NETWORK_EAP; 4928 else if (params->auth_alg & WPA_AUTH_ALG_FT) 4929 type = NL80211_AUTHTYPE_FT; 4930 else if (params->auth_alg & WPA_AUTH_ALG_SAE) 4931 type = NL80211_AUTHTYPE_SAE; 4932 else 4933 goto nla_put_failure; 4934 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 4935 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 4936 if (params->local_state_change) { 4937 wpa_printf(MSG_DEBUG, " * Local state change only"); 4938 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 4939 } 4940 4941 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4942 msg = NULL; 4943 if (ret) { 4944 wpa_dbg(drv->ctx, MSG_DEBUG, 4945 "nl80211: MLME command failed (auth): ret=%d (%s)", 4946 ret, strerror(-ret)); 4947 count++; 4948 if (ret == -EALREADY && count == 1 && params->bssid && 4949 !params->local_state_change) { 4950 /* 4951 * mac80211 does not currently accept new 4952 * authentication if we are already authenticated. As a 4953 * workaround, force deauthentication and try again. 4954 */ 4955 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication " 4956 "after forced deauthentication"); 4957 wpa_driver_nl80211_deauthenticate( 4958 bss, params->bssid, 4959 WLAN_REASON_PREV_AUTH_NOT_VALID); 4960 nlmsg_free(msg); 4961 goto retry; 4962 } 4963 4964 if (ret == -ENOENT && params->freq && !is_retry) { 4965 /* 4966 * cfg80211 has likely expired the BSS entry even 4967 * though it was previously available in our internal 4968 * BSS table. To recover quickly, start a single 4969 * channel scan on the specified channel. 4970 */ 4971 struct wpa_driver_scan_params scan; 4972 int freqs[2]; 4973 4974 os_memset(&scan, 0, sizeof(scan)); 4975 scan.num_ssids = 1; 4976 if (params->ssid) { 4977 scan.ssids[0].ssid = params->ssid; 4978 scan.ssids[0].ssid_len = params->ssid_len; 4979 } 4980 freqs[0] = params->freq; 4981 freqs[1] = 0; 4982 scan.freqs = freqs; 4983 wpa_printf(MSG_DEBUG, "nl80211: Trigger single " 4984 "channel scan to refresh cfg80211 BSS " 4985 "entry"); 4986 ret = wpa_driver_nl80211_scan(bss, &scan); 4987 if (ret == 0) { 4988 nl80211_copy_auth_params(drv, params); 4989 drv->scan_for_auth = 1; 4990 } 4991 } else if (is_retry) { 4992 /* 4993 * Need to indicate this with an event since the return 4994 * value from the retry is not delivered to core code. 4995 */ 4996 union wpa_event_data event; 4997 wpa_printf(MSG_DEBUG, "nl80211: Authentication retry " 4998 "failed"); 4999 os_memset(&event, 0, sizeof(event)); 5000 os_memcpy(event.timeout_event.addr, drv->auth_bssid_, 5001 ETH_ALEN); 5002 wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT, 5003 &event); 5004 } 5005 5006 goto nla_put_failure; 5007 } 5008 ret = 0; 5009 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send " 5010 "successfully"); 5011 5012nla_put_failure: 5013 nlmsg_free(msg); 5014 return ret; 5015} 5016 5017 5018static int wpa_driver_nl80211_authenticate_retry( 5019 struct wpa_driver_nl80211_data *drv) 5020{ 5021 struct wpa_driver_auth_params params; 5022 struct i802_bss *bss = &drv->first_bss; 5023 int i; 5024 5025 wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again"); 5026 5027 os_memset(¶ms, 0, sizeof(params)); 5028 params.freq = drv->auth_freq; 5029 params.auth_alg = drv->auth_alg; 5030 params.wep_tx_keyidx = drv->auth_wep_tx_keyidx; 5031 params.local_state_change = drv->auth_local_state_change; 5032 params.p2p = drv->auth_p2p; 5033 5034 if (!is_zero_ether_addr(drv->auth_bssid_)) 5035 params.bssid = drv->auth_bssid_; 5036 5037 if (drv->auth_ssid_len) { 5038 params.ssid = drv->auth_ssid; 5039 params.ssid_len = drv->auth_ssid_len; 5040 } 5041 5042 params.ie = drv->auth_ie; 5043 params.ie_len = drv->auth_ie_len; 5044 5045 for (i = 0; i < 4; i++) { 5046 if (drv->auth_wep_key_len[i]) { 5047 params.wep_key[i] = drv->auth_wep_key[i]; 5048 params.wep_key_len[i] = drv->auth_wep_key_len[i]; 5049 } 5050 } 5051 5052 drv->retry_auth = 1; 5053 return wpa_driver_nl80211_authenticate(bss, ¶ms); 5054} 5055 5056 5057struct phy_info_arg { 5058 u16 *num_modes; 5059 struct hostapd_hw_modes *modes; 5060 int last_mode, last_chan_idx; 5061}; 5062 5063static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa, 5064 struct nlattr *ampdu_factor, 5065 struct nlattr *ampdu_density, 5066 struct nlattr *mcs_set) 5067{ 5068 if (capa) 5069 mode->ht_capab = nla_get_u16(capa); 5070 5071 if (ampdu_factor) 5072 mode->a_mpdu_params |= nla_get_u8(ampdu_factor) & 0x03; 5073 5074 if (ampdu_density) 5075 mode->a_mpdu_params |= nla_get_u8(ampdu_density) << 2; 5076 5077 if (mcs_set && nla_len(mcs_set) >= 16) { 5078 u8 *mcs; 5079 mcs = nla_data(mcs_set); 5080 os_memcpy(mode->mcs_set, mcs, 16); 5081 } 5082} 5083 5084 5085static void phy_info_vht_capa(struct hostapd_hw_modes *mode, 5086 struct nlattr *capa, 5087 struct nlattr *mcs_set) 5088{ 5089 if (capa) 5090 mode->vht_capab = nla_get_u32(capa); 5091 5092 if (mcs_set && nla_len(mcs_set) >= 8) { 5093 u8 *mcs; 5094 mcs = nla_data(mcs_set); 5095 os_memcpy(mode->vht_mcs_set, mcs, 8); 5096 } 5097} 5098 5099 5100static void phy_info_freq(struct hostapd_hw_modes *mode, 5101 struct hostapd_channel_data *chan, 5102 struct nlattr *tb_freq[]) 5103{ 5104 enum hostapd_hw_mode m; 5105 5106 chan->freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]); 5107 chan->flag = 0; 5108 5109 if (chan->freq < 4000) 5110 m = HOSTAPD_MODE_IEEE80211B; 5111 else if (chan->freq > 50000) 5112 m = HOSTAPD_MODE_IEEE80211AD; 5113 else 5114 m = HOSTAPD_MODE_IEEE80211A; 5115 5116 switch (m) { 5117 case HOSTAPD_MODE_IEEE80211AD: 5118 chan->chan = (chan->freq - 56160) / 2160; 5119 break; 5120 case HOSTAPD_MODE_IEEE80211A: 5121 chan->chan = chan->freq / 5 - 1000; 5122 break; 5123 case HOSTAPD_MODE_IEEE80211B: 5124 case HOSTAPD_MODE_IEEE80211G: 5125 if (chan->freq == 2484) 5126 chan->chan = 14; 5127 else 5128 chan->chan = (chan->freq - 2407) / 5; 5129 break; 5130 default: 5131 break; 5132 } 5133 5134 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 5135 chan->flag |= HOSTAPD_CHAN_DISABLED; 5136 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN]) 5137 chan->flag |= HOSTAPD_CHAN_PASSIVE_SCAN; 5138 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS]) 5139 chan->flag |= HOSTAPD_CHAN_NO_IBSS; 5140 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR]) 5141 chan->flag |= HOSTAPD_CHAN_RADAR; 5142 5143 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] && 5144 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 5145 chan->max_tx_power = nla_get_u32( 5146 tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100; 5147} 5148 5149 5150static int phy_info_freqs(struct phy_info_arg *phy_info, 5151 struct hostapd_hw_modes *mode, struct nlattr *tb) 5152{ 5153 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 5154 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, 5155 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, 5156 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG }, 5157 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG }, 5158 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, 5159 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 }, 5160 }; 5161 int new_channels = 0; 5162 struct hostapd_channel_data *channel; 5163 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1]; 5164 struct nlattr *nl_freq; 5165 int rem_freq, idx; 5166 5167 if (tb == NULL) 5168 return NL_OK; 5169 5170 nla_for_each_nested(nl_freq, tb, rem_freq) { 5171 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, 5172 nla_data(nl_freq), nla_len(nl_freq), freq_policy); 5173 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 5174 continue; 5175 new_channels++; 5176 } 5177 5178 channel = os_realloc_array(mode->channels, 5179 mode->num_channels + new_channels, 5180 sizeof(struct hostapd_channel_data)); 5181 if (!channel) 5182 return NL_SKIP; 5183 5184 mode->channels = channel; 5185 mode->num_channels += new_channels; 5186 5187 idx = phy_info->last_chan_idx; 5188 5189 nla_for_each_nested(nl_freq, tb, rem_freq) { 5190 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, 5191 nla_data(nl_freq), nla_len(nl_freq), freq_policy); 5192 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 5193 continue; 5194 phy_info_freq(mode, &mode->channels[idx], tb_freq); 5195 idx++; 5196 } 5197 phy_info->last_chan_idx = idx; 5198 5199 return NL_OK; 5200} 5201 5202 5203static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb) 5204{ 5205 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = { 5206 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 }, 5207 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = 5208 { .type = NLA_FLAG }, 5209 }; 5210 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1]; 5211 struct nlattr *nl_rate; 5212 int rem_rate, idx; 5213 5214 if (tb == NULL) 5215 return NL_OK; 5216 5217 nla_for_each_nested(nl_rate, tb, rem_rate) { 5218 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, 5219 nla_data(nl_rate), nla_len(nl_rate), 5220 rate_policy); 5221 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 5222 continue; 5223 mode->num_rates++; 5224 } 5225 5226 mode->rates = os_calloc(mode->num_rates, sizeof(int)); 5227 if (!mode->rates) 5228 return NL_SKIP; 5229 5230 idx = 0; 5231 5232 nla_for_each_nested(nl_rate, tb, rem_rate) { 5233 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, 5234 nla_data(nl_rate), nla_len(nl_rate), 5235 rate_policy); 5236 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 5237 continue; 5238 mode->rates[idx] = nla_get_u32( 5239 tb_rate[NL80211_BITRATE_ATTR_RATE]); 5240 idx++; 5241 } 5242 5243 return NL_OK; 5244} 5245 5246 5247static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band) 5248{ 5249 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1]; 5250 struct hostapd_hw_modes *mode; 5251 int ret; 5252 5253 if (phy_info->last_mode != nl_band->nla_type) { 5254 mode = os_realloc_array(phy_info->modes, 5255 *phy_info->num_modes + 1, 5256 sizeof(*mode)); 5257 if (!mode) 5258 return NL_SKIP; 5259 phy_info->modes = mode; 5260 5261 mode = &phy_info->modes[*(phy_info->num_modes)]; 5262 os_memset(mode, 0, sizeof(*mode)); 5263 mode->mode = NUM_HOSTAPD_MODES; 5264 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN; 5265 *(phy_info->num_modes) += 1; 5266 phy_info->last_mode = nl_band->nla_type; 5267 phy_info->last_chan_idx = 0; 5268 } else 5269 mode = &phy_info->modes[*(phy_info->num_modes) - 1]; 5270 5271 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band), 5272 nla_len(nl_band), NULL); 5273 5274 phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA], 5275 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR], 5276 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY], 5277 tb_band[NL80211_BAND_ATTR_HT_MCS_SET]); 5278 phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA], 5279 tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]); 5280 ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]); 5281 if (ret != NL_OK) 5282 return ret; 5283 ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]); 5284 if (ret != NL_OK) 5285 return ret; 5286 5287 return NL_OK; 5288} 5289 5290 5291static int phy_info_handler(struct nl_msg *msg, void *arg) 5292{ 5293 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 5294 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 5295 struct phy_info_arg *phy_info = arg; 5296 struct nlattr *nl_band; 5297 int rem_band; 5298 5299 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5300 genlmsg_attrlen(gnlh, 0), NULL); 5301 5302 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS]) 5303 return NL_SKIP; 5304 5305 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) 5306 { 5307 int res = phy_info_band(phy_info, nl_band); 5308 if (res != NL_OK) 5309 return res; 5310 } 5311 5312 return NL_SKIP; 5313} 5314 5315 5316static struct hostapd_hw_modes * 5317wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes *modes, 5318 u16 *num_modes) 5319{ 5320 u16 m; 5321 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode; 5322 int i, mode11g_idx = -1; 5323 5324 /* heuristic to set up modes */ 5325 for (m = 0; m < *num_modes; m++) { 5326 if (!modes[m].num_channels) 5327 continue; 5328 if (modes[m].channels[0].freq < 4000) { 5329 modes[m].mode = HOSTAPD_MODE_IEEE80211B; 5330 for (i = 0; i < modes[m].num_rates; i++) { 5331 if (modes[m].rates[i] > 200) { 5332 modes[m].mode = HOSTAPD_MODE_IEEE80211G; 5333 break; 5334 } 5335 } 5336 } else if (modes[m].channels[0].freq > 50000) 5337 modes[m].mode = HOSTAPD_MODE_IEEE80211AD; 5338 else 5339 modes[m].mode = HOSTAPD_MODE_IEEE80211A; 5340 } 5341 5342 /* If only 802.11g mode is included, use it to construct matching 5343 * 802.11b mode data. */ 5344 5345 for (m = 0; m < *num_modes; m++) { 5346 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B) 5347 return modes; /* 802.11b already included */ 5348 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G) 5349 mode11g_idx = m; 5350 } 5351 5352 if (mode11g_idx < 0) 5353 return modes; /* 2.4 GHz band not supported at all */ 5354 5355 nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes)); 5356 if (nmodes == NULL) 5357 return modes; /* Could not add 802.11b mode */ 5358 5359 mode = &nmodes[*num_modes]; 5360 os_memset(mode, 0, sizeof(*mode)); 5361 (*num_modes)++; 5362 modes = nmodes; 5363 5364 mode->mode = HOSTAPD_MODE_IEEE80211B; 5365 5366 mode11g = &modes[mode11g_idx]; 5367 mode->num_channels = mode11g->num_channels; 5368 mode->channels = os_malloc(mode11g->num_channels * 5369 sizeof(struct hostapd_channel_data)); 5370 if (mode->channels == NULL) { 5371 (*num_modes)--; 5372 return modes; /* Could not add 802.11b mode */ 5373 } 5374 os_memcpy(mode->channels, mode11g->channels, 5375 mode11g->num_channels * sizeof(struct hostapd_channel_data)); 5376 5377 mode->num_rates = 0; 5378 mode->rates = os_malloc(4 * sizeof(int)); 5379 if (mode->rates == NULL) { 5380 os_free(mode->channels); 5381 (*num_modes)--; 5382 return modes; /* Could not add 802.11b mode */ 5383 } 5384 5385 for (i = 0; i < mode11g->num_rates; i++) { 5386 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 && 5387 mode11g->rates[i] != 55 && mode11g->rates[i] != 110) 5388 continue; 5389 mode->rates[mode->num_rates] = mode11g->rates[i]; 5390 mode->num_rates++; 5391 if (mode->num_rates == 4) 5392 break; 5393 } 5394 5395 if (mode->num_rates == 0) { 5396 os_free(mode->channels); 5397 os_free(mode->rates); 5398 (*num_modes)--; 5399 return modes; /* No 802.11b rates */ 5400 } 5401 5402 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g " 5403 "information"); 5404 5405 return modes; 5406} 5407 5408 5409static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start, 5410 int end) 5411{ 5412 int c; 5413 5414 for (c = 0; c < mode->num_channels; c++) { 5415 struct hostapd_channel_data *chan = &mode->channels[c]; 5416 if (chan->freq - 10 >= start && chan->freq + 10 <= end) 5417 chan->flag |= HOSTAPD_CHAN_HT40; 5418 } 5419} 5420 5421 5422static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start, 5423 int end) 5424{ 5425 int c; 5426 5427 for (c = 0; c < mode->num_channels; c++) { 5428 struct hostapd_channel_data *chan = &mode->channels[c]; 5429 if (!(chan->flag & HOSTAPD_CHAN_HT40)) 5430 continue; 5431 if (chan->freq - 30 >= start && chan->freq - 10 <= end) 5432 chan->flag |= HOSTAPD_CHAN_HT40MINUS; 5433 if (chan->freq + 10 >= start && chan->freq + 30 <= end) 5434 chan->flag |= HOSTAPD_CHAN_HT40PLUS; 5435 } 5436} 5437 5438 5439static void nl80211_reg_rule_ht40(struct nlattr *tb[], 5440 struct phy_info_arg *results) 5441{ 5442 u32 start, end, max_bw; 5443 u16 m; 5444 5445 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 5446 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 5447 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 5448 return; 5449 5450 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 5451 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 5452 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 5453 5454 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz", 5455 start, end, max_bw); 5456 if (max_bw < 40) 5457 return; 5458 5459 for (m = 0; m < *results->num_modes; m++) { 5460 if (!(results->modes[m].ht_capab & 5461 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 5462 continue; 5463 nl80211_set_ht40_mode(&results->modes[m], start, end); 5464 } 5465} 5466 5467 5468static void nl80211_reg_rule_sec(struct nlattr *tb[], 5469 struct phy_info_arg *results) 5470{ 5471 u32 start, end, max_bw; 5472 u16 m; 5473 5474 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 5475 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 5476 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 5477 return; 5478 5479 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 5480 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 5481 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 5482 5483 if (max_bw < 20) 5484 return; 5485 5486 for (m = 0; m < *results->num_modes; m++) { 5487 if (!(results->modes[m].ht_capab & 5488 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 5489 continue; 5490 nl80211_set_ht40_mode_sec(&results->modes[m], start, end); 5491 } 5492} 5493 5494 5495static int nl80211_get_reg(struct nl_msg *msg, void *arg) 5496{ 5497 struct phy_info_arg *results = arg; 5498 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 5499 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 5500 struct nlattr *nl_rule; 5501 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1]; 5502 int rem_rule; 5503 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 5504 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 5505 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 5506 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 5507 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 5508 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 5509 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 5510 }; 5511 5512 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5513 genlmsg_attrlen(gnlh, 0), NULL); 5514 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] || 5515 !tb_msg[NL80211_ATTR_REG_RULES]) { 5516 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information " 5517 "available"); 5518 return NL_SKIP; 5519 } 5520 5521 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s", 5522 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2])); 5523 5524 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 5525 { 5526 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 5527 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 5528 nl80211_reg_rule_ht40(tb_rule, results); 5529 } 5530 5531 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 5532 { 5533 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 5534 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 5535 nl80211_reg_rule_sec(tb_rule, results); 5536 } 5537 5538 return NL_SKIP; 5539} 5540 5541 5542static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv, 5543 struct phy_info_arg *results) 5544{ 5545 struct nl_msg *msg; 5546 5547 msg = nlmsg_alloc(); 5548 if (!msg) 5549 return -ENOMEM; 5550 5551 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG); 5552 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results); 5553} 5554 5555 5556static struct hostapd_hw_modes * 5557wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags) 5558{ 5559 u32 feat; 5560 struct i802_bss *bss = priv; 5561 struct wpa_driver_nl80211_data *drv = bss->drv; 5562 struct nl_msg *msg; 5563 struct phy_info_arg result = { 5564 .num_modes = num_modes, 5565 .modes = NULL, 5566 .last_mode = -1, 5567 }; 5568 5569 *num_modes = 0; 5570 *flags = 0; 5571 5572 msg = nlmsg_alloc(); 5573 if (!msg) 5574 return NULL; 5575 5576 feat = get_nl80211_protocol_features(drv); 5577 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) 5578 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_WIPHY); 5579 else 5580 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 5581 5582 NLA_PUT_FLAG(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP); 5583 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5584 5585 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) { 5586 nl80211_set_ht40_flags(drv, &result); 5587 return wpa_driver_nl80211_postprocess_modes(result.modes, 5588 num_modes); 5589 } 5590 msg = NULL; 5591 nla_put_failure: 5592 nlmsg_free(msg); 5593 return NULL; 5594} 5595 5596 5597static int wpa_driver_nl80211_send_mntr(struct wpa_driver_nl80211_data *drv, 5598 const void *data, size_t len, 5599 int encrypt, int noack) 5600{ 5601 __u8 rtap_hdr[] = { 5602 0x00, 0x00, /* radiotap version */ 5603 0x0e, 0x00, /* radiotap length */ 5604 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */ 5605 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */ 5606 0x00, /* padding */ 5607 0x00, 0x00, /* RX and TX flags to indicate that */ 5608 0x00, 0x00, /* this is the injected frame directly */ 5609 }; 5610 struct iovec iov[2] = { 5611 { 5612 .iov_base = &rtap_hdr, 5613 .iov_len = sizeof(rtap_hdr), 5614 }, 5615 { 5616 .iov_base = (void *) data, 5617 .iov_len = len, 5618 } 5619 }; 5620 struct msghdr msg = { 5621 .msg_name = NULL, 5622 .msg_namelen = 0, 5623 .msg_iov = iov, 5624 .msg_iovlen = 2, 5625 .msg_control = NULL, 5626 .msg_controllen = 0, 5627 .msg_flags = 0, 5628 }; 5629 int res; 5630 u16 txflags = 0; 5631 5632 if (encrypt) 5633 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP; 5634 5635 if (drv->monitor_sock < 0) { 5636 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available " 5637 "for %s", __func__); 5638 return -1; 5639 } 5640 5641 if (noack) 5642 txflags |= IEEE80211_RADIOTAP_F_TX_NOACK; 5643 WPA_PUT_LE16(&rtap_hdr[12], txflags); 5644 5645 res = sendmsg(drv->monitor_sock, &msg, 0); 5646 if (res < 0) { 5647 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno)); 5648 return -1; 5649 } 5650 return 0; 5651} 5652 5653 5654static int wpa_driver_nl80211_send_frame(struct i802_bss *bss, 5655 const void *data, size_t len, 5656 int encrypt, int noack, 5657 unsigned int freq, int no_cck, 5658 int offchanok, unsigned int wait_time) 5659{ 5660 struct wpa_driver_nl80211_data *drv = bss->drv; 5661 u64 cookie; 5662 5663 if (freq == 0) 5664 freq = bss->freq; 5665 5666 if (drv->use_monitor) 5667 return wpa_driver_nl80211_send_mntr(drv, data, len, 5668 encrypt, noack); 5669 5670 return nl80211_send_frame_cmd(bss, freq, wait_time, data, len, 5671 &cookie, no_cck, noack, offchanok); 5672} 5673 5674 5675static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data, 5676 size_t data_len, int noack, 5677 unsigned int freq, int no_cck, 5678 int offchanok, 5679 unsigned int wait_time) 5680{ 5681 struct wpa_driver_nl80211_data *drv = bss->drv; 5682 struct ieee80211_mgmt *mgmt; 5683 int encrypt = 1; 5684 u16 fc; 5685 5686 mgmt = (struct ieee80211_mgmt *) data; 5687 fc = le_to_host16(mgmt->frame_control); 5688 5689 if (is_sta_interface(drv->nlmode) && 5690 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 5691 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) { 5692 /* 5693 * The use of last_mgmt_freq is a bit of a hack, 5694 * but it works due to the single-threaded nature 5695 * of wpa_supplicant. 5696 */ 5697 if (freq == 0) 5698 freq = drv->last_mgmt_freq; 5699 return nl80211_send_frame_cmd(bss, freq, 0, 5700 data, data_len, NULL, 1, noack, 5701 1); 5702 } 5703 5704 if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) { 5705 if (freq == 0) 5706 freq = bss->freq; 5707 return nl80211_send_frame_cmd(bss, freq, 5708 (int) freq == bss->freq ? 0 : 5709 wait_time, 5710 data, data_len, 5711 &drv->send_action_cookie, 5712 no_cck, noack, offchanok); 5713 } 5714 5715 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 5716 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) { 5717 /* 5718 * Only one of the authentication frame types is encrypted. 5719 * In order for static WEP encryption to work properly (i.e., 5720 * to not encrypt the frame), we need to tell mac80211 about 5721 * the frames that must not be encrypted. 5722 */ 5723 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg); 5724 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction); 5725 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3) 5726 encrypt = 0; 5727 } 5728 5729 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 5730 noack, freq, no_cck, offchanok, 5731 wait_time); 5732} 5733 5734 5735static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble, 5736 int slot, int ht_opmode, int ap_isolate, 5737 int *basic_rates) 5738{ 5739 struct wpa_driver_nl80211_data *drv = bss->drv; 5740 struct nl_msg *msg; 5741 5742 msg = nlmsg_alloc(); 5743 if (!msg) 5744 return -ENOMEM; 5745 5746 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS); 5747 5748 if (cts >= 0) 5749 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts); 5750 if (preamble >= 0) 5751 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble); 5752 if (slot >= 0) 5753 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot); 5754 if (ht_opmode >= 0) 5755 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode); 5756 if (ap_isolate >= 0) 5757 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate); 5758 5759 if (basic_rates) { 5760 u8 rates[NL80211_MAX_SUPP_RATES]; 5761 u8 rates_len = 0; 5762 int i; 5763 5764 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; 5765 i++) 5766 rates[rates_len++] = basic_rates[i] / 5; 5767 5768 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates); 5769 } 5770 5771 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 5772 5773 return send_and_recv_msgs(drv, msg, NULL, NULL); 5774 nla_put_failure: 5775 nlmsg_free(msg); 5776 return -ENOBUFS; 5777} 5778 5779 5780static int wpa_driver_nl80211_set_ap(void *priv, 5781 struct wpa_driver_ap_params *params) 5782{ 5783 struct i802_bss *bss = priv; 5784 struct wpa_driver_nl80211_data *drv = bss->drv; 5785 struct nl_msg *msg; 5786 u8 cmd = NL80211_CMD_NEW_BEACON; 5787 int ret; 5788 int beacon_set; 5789 int ifindex = if_nametoindex(bss->ifname); 5790 int num_suites; 5791 u32 suites[10]; 5792 u32 ver; 5793 5794 beacon_set = bss->beacon_set; 5795 5796 msg = nlmsg_alloc(); 5797 if (!msg) 5798 return -ENOMEM; 5799 5800 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)", 5801 beacon_set); 5802 if (beacon_set) 5803 cmd = NL80211_CMD_SET_BEACON; 5804 5805 nl80211_cmd(drv, msg, 0, cmd); 5806 wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head", 5807 params->head, params->head_len); 5808 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head); 5809 wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail", 5810 params->tail, params->tail_len); 5811 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail); 5812 wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", ifindex); 5813 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 5814 wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int); 5815 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int); 5816 wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period); 5817 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period); 5818 wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid", 5819 params->ssid, params->ssid_len); 5820 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 5821 params->ssid); 5822 if (params->proberesp && params->proberesp_len) { 5823 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)", 5824 params->proberesp, params->proberesp_len); 5825 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len, 5826 params->proberesp); 5827 } 5828 switch (params->hide_ssid) { 5829 case NO_SSID_HIDING: 5830 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use"); 5831 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5832 NL80211_HIDDEN_SSID_NOT_IN_USE); 5833 break; 5834 case HIDDEN_SSID_ZERO_LEN: 5835 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len"); 5836 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5837 NL80211_HIDDEN_SSID_ZERO_LEN); 5838 break; 5839 case HIDDEN_SSID_ZERO_CONTENTS: 5840 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents"); 5841 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5842 NL80211_HIDDEN_SSID_ZERO_CONTENTS); 5843 break; 5844 } 5845 wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy); 5846 if (params->privacy) 5847 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 5848 wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs); 5849 if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) == 5850 (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) { 5851 /* Leave out the attribute */ 5852 } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) 5853 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 5854 NL80211_AUTHTYPE_SHARED_KEY); 5855 else 5856 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 5857 NL80211_AUTHTYPE_OPEN_SYSTEM); 5858 5859 wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version); 5860 ver = 0; 5861 if (params->wpa_version & WPA_PROTO_WPA) 5862 ver |= NL80211_WPA_VERSION_1; 5863 if (params->wpa_version & WPA_PROTO_RSN) 5864 ver |= NL80211_WPA_VERSION_2; 5865 if (ver) 5866 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 5867 5868 wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x", 5869 params->key_mgmt_suites); 5870 num_suites = 0; 5871 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X) 5872 suites[num_suites++] = WLAN_AKM_SUITE_8021X; 5873 if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK) 5874 suites[num_suites++] = WLAN_AKM_SUITE_PSK; 5875 if (num_suites) { 5876 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES, 5877 num_suites * sizeof(u32), suites); 5878 } 5879 5880 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X && 5881 params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40)) 5882 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT); 5883 5884 wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x", 5885 params->pairwise_ciphers); 5886 num_suites = 0; 5887 if (params->pairwise_ciphers & WPA_CIPHER_CCMP) 5888 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP; 5889 if (params->pairwise_ciphers & WPA_CIPHER_GCMP) 5890 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP; 5891 if (params->pairwise_ciphers & WPA_CIPHER_TKIP) 5892 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP; 5893 if (params->pairwise_ciphers & WPA_CIPHER_WEP104) 5894 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104; 5895 if (params->pairwise_ciphers & WPA_CIPHER_WEP40) 5896 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40; 5897 if (num_suites) { 5898 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, 5899 num_suites * sizeof(u32), suites); 5900 } 5901 5902 wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x", 5903 params->group_cipher); 5904 switch (params->group_cipher) { 5905 case WPA_CIPHER_CCMP: 5906 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5907 WLAN_CIPHER_SUITE_CCMP); 5908 break; 5909 case WPA_CIPHER_GCMP: 5910 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5911 WLAN_CIPHER_SUITE_GCMP); 5912 break; 5913 case WPA_CIPHER_TKIP: 5914 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5915 WLAN_CIPHER_SUITE_TKIP); 5916 break; 5917 case WPA_CIPHER_WEP104: 5918 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5919 WLAN_CIPHER_SUITE_WEP104); 5920 break; 5921 case WPA_CIPHER_WEP40: 5922 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5923 WLAN_CIPHER_SUITE_WEP40); 5924 break; 5925 } 5926 5927 if (params->beacon_ies) { 5928 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies", 5929 params->beacon_ies); 5930 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies), 5931 wpabuf_head(params->beacon_ies)); 5932 } 5933 if (params->proberesp_ies) { 5934 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies", 5935 params->proberesp_ies); 5936 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP, 5937 wpabuf_len(params->proberesp_ies), 5938 wpabuf_head(params->proberesp_ies)); 5939 } 5940 if (params->assocresp_ies) { 5941 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies", 5942 params->assocresp_ies); 5943 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP, 5944 wpabuf_len(params->assocresp_ies), 5945 wpabuf_head(params->assocresp_ies)); 5946 } 5947 5948 if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER) { 5949 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d", 5950 params->ap_max_inactivity); 5951 NLA_PUT_U16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT, 5952 params->ap_max_inactivity); 5953 } 5954 5955 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5956 if (ret) { 5957 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)", 5958 ret, strerror(-ret)); 5959 } else { 5960 bss->beacon_set = 1; 5961 nl80211_set_bss(bss, params->cts_protect, params->preamble, 5962 params->short_slot_time, params->ht_opmode, 5963 params->isolate, params->basic_rates); 5964 } 5965 return ret; 5966 nla_put_failure: 5967 nlmsg_free(msg); 5968 return -ENOBUFS; 5969} 5970 5971 5972static int wpa_driver_nl80211_set_freq(struct i802_bss *bss, 5973 struct hostapd_freq_params *freq) 5974{ 5975 struct wpa_driver_nl80211_data *drv = bss->drv; 5976 struct nl_msg *msg; 5977 int ret; 5978 5979 wpa_printf(MSG_DEBUG, "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d," 5980 " bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)", 5981 freq->freq, freq->ht_enabled, freq->vht_enabled, 5982 freq->bandwidth, freq->center_freq1, freq->center_freq2); 5983 msg = nlmsg_alloc(); 5984 if (!msg) 5985 return -1; 5986 5987 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 5988 5989 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5990 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq); 5991 if (freq->vht_enabled) { 5992 switch (freq->bandwidth) { 5993 case 20: 5994 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 5995 NL80211_CHAN_WIDTH_20); 5996 break; 5997 case 40: 5998 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 5999 NL80211_CHAN_WIDTH_40); 6000 break; 6001 case 80: 6002 if (freq->center_freq2) 6003 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 6004 NL80211_CHAN_WIDTH_80P80); 6005 else 6006 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 6007 NL80211_CHAN_WIDTH_80); 6008 break; 6009 case 160: 6010 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 6011 NL80211_CHAN_WIDTH_160); 6012 break; 6013 default: 6014 return -1; 6015 } 6016 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1, freq->center_freq1); 6017 if (freq->center_freq2) 6018 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ2, 6019 freq->center_freq2); 6020 } else if (freq->ht_enabled) { 6021 switch (freq->sec_channel_offset) { 6022 case -1: 6023 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 6024 NL80211_CHAN_HT40MINUS); 6025 break; 6026 case 1: 6027 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 6028 NL80211_CHAN_HT40PLUS); 6029 break; 6030 default: 6031 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 6032 NL80211_CHAN_HT20); 6033 break; 6034 } 6035 } 6036 6037 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6038 msg = NULL; 6039 if (ret == 0) { 6040 bss->freq = freq->freq; 6041 return 0; 6042 } 6043 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): " 6044 "%d (%s)", freq->freq, ret, strerror(-ret)); 6045nla_put_failure: 6046 nlmsg_free(msg); 6047 return -1; 6048} 6049 6050 6051static u32 sta_flags_nl80211(int flags) 6052{ 6053 u32 f = 0; 6054 6055 if (flags & WPA_STA_AUTHORIZED) 6056 f |= BIT(NL80211_STA_FLAG_AUTHORIZED); 6057 if (flags & WPA_STA_WMM) 6058 f |= BIT(NL80211_STA_FLAG_WME); 6059 if (flags & WPA_STA_SHORT_PREAMBLE) 6060 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 6061 if (flags & WPA_STA_MFP) 6062 f |= BIT(NL80211_STA_FLAG_MFP); 6063 if (flags & WPA_STA_TDLS_PEER) 6064 f |= BIT(NL80211_STA_FLAG_TDLS_PEER); 6065 6066 return f; 6067} 6068 6069 6070static int wpa_driver_nl80211_sta_add(void *priv, 6071 struct hostapd_sta_add_params *params) 6072{ 6073 struct i802_bss *bss = priv; 6074 struct wpa_driver_nl80211_data *drv = bss->drv; 6075 struct nl_msg *msg; 6076 struct nl80211_sta_flag_update upd; 6077 int ret = -ENOBUFS; 6078 6079 if ((params->flags & WPA_STA_TDLS_PEER) && 6080 !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 6081 return -EOPNOTSUPP; 6082 6083 msg = nlmsg_alloc(); 6084 if (!msg) 6085 return -ENOMEM; 6086 6087 wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR, 6088 params->set ? "Set" : "Add", MAC2STR(params->addr)); 6089 nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION : 6090 NL80211_CMD_NEW_STATION); 6091 6092 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 6093 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr); 6094 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len, 6095 params->supp_rates); 6096 wpa_hexdump(MSG_DEBUG, " * supported rates", params->supp_rates, 6097 params->supp_rates_len); 6098 if (!params->set) { 6099 wpa_printf(MSG_DEBUG, " * aid=%u", params->aid); 6100 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid); 6101 wpa_printf(MSG_DEBUG, " * listen_interval=%u", 6102 params->listen_interval); 6103 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL, 6104 params->listen_interval); 6105 } 6106 if (params->ht_capabilities) { 6107 wpa_hexdump(MSG_DEBUG, " * ht_capabilities", 6108 (u8 *) params->ht_capabilities, 6109 sizeof(*params->ht_capabilities)); 6110 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, 6111 sizeof(*params->ht_capabilities), 6112 params->ht_capabilities); 6113 } 6114 6115 if (params->vht_capabilities) { 6116 wpa_hexdump(MSG_DEBUG, " * vht_capabilities", 6117 (u8 *) params->vht_capabilities, 6118 sizeof(*params->vht_capabilities)); 6119 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, 6120 sizeof(*params->vht_capabilities), 6121 params->vht_capabilities); 6122 } 6123 6124 wpa_printf(MSG_DEBUG, " * capability=0x%x", params->capability); 6125 NLA_PUT_U16(msg, NL80211_ATTR_STA_CAPABILITY, params->capability); 6126 6127 if (params->ext_capab) { 6128 wpa_hexdump(MSG_DEBUG, " * ext_capab", 6129 params->ext_capab, params->ext_capab_len); 6130 NLA_PUT(msg, NL80211_ATTR_STA_EXT_CAPABILITY, 6131 params->ext_capab_len, params->ext_capab); 6132 } 6133 6134 os_memset(&upd, 0, sizeof(upd)); 6135 upd.mask = sta_flags_nl80211(params->flags); 6136 upd.set = upd.mask; 6137 wpa_printf(MSG_DEBUG, " * flags set=0x%x mask=0x%x", 6138 upd.set, upd.mask); 6139 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 6140 6141 if (params->flags & WPA_STA_WMM) { 6142 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME); 6143 6144 if (!wme) 6145 goto nla_put_failure; 6146 6147 wpa_printf(MSG_DEBUG, " * qosinfo=0x%x", params->qosinfo); 6148 NLA_PUT_U8(msg, NL80211_STA_WME_UAPSD_QUEUES, 6149 params->qosinfo & WMM_QOSINFO_STA_AC_MASK); 6150 NLA_PUT_U8(msg, NL80211_STA_WME_MAX_SP, 6151 (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) & 6152 WMM_QOSINFO_STA_SP_MASK); 6153 nla_nest_end(msg, wme); 6154 } 6155 6156 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6157 msg = NULL; 6158 if (ret) 6159 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION " 6160 "result: %d (%s)", params->set ? "SET" : "NEW", ret, 6161 strerror(-ret)); 6162 if (ret == -EEXIST) 6163 ret = 0; 6164 nla_put_failure: 6165 nlmsg_free(msg); 6166 return ret; 6167} 6168 6169 6170static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr) 6171{ 6172 struct wpa_driver_nl80211_data *drv = bss->drv; 6173 struct nl_msg *msg; 6174 int ret; 6175 6176 msg = nlmsg_alloc(); 6177 if (!msg) 6178 return -ENOMEM; 6179 6180 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 6181 6182 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 6183 if_nametoindex(bss->ifname)); 6184 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 6185 6186 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6187 if (ret == -ENOENT) 6188 return 0; 6189 return ret; 6190 nla_put_failure: 6191 nlmsg_free(msg); 6192 return -ENOBUFS; 6193} 6194 6195 6196static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, 6197 int ifidx) 6198{ 6199 struct nl_msg *msg; 6200 6201 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx); 6202 6203 /* stop listening for EAPOL on this interface */ 6204 del_ifidx(drv, ifidx); 6205 6206 msg = nlmsg_alloc(); 6207 if (!msg) 6208 goto nla_put_failure; 6209 6210 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE); 6211 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx); 6212 6213 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 6214 return; 6215 msg = NULL; 6216 nla_put_failure: 6217 nlmsg_free(msg); 6218 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx); 6219} 6220 6221 6222static const char * nl80211_iftype_str(enum nl80211_iftype mode) 6223{ 6224 switch (mode) { 6225 case NL80211_IFTYPE_ADHOC: 6226 return "ADHOC"; 6227 case NL80211_IFTYPE_STATION: 6228 return "STATION"; 6229 case NL80211_IFTYPE_AP: 6230 return "AP"; 6231 case NL80211_IFTYPE_MONITOR: 6232 return "MONITOR"; 6233 case NL80211_IFTYPE_P2P_CLIENT: 6234 return "P2P_CLIENT"; 6235 case NL80211_IFTYPE_P2P_GO: 6236 return "P2P_GO"; 6237 default: 6238 return "unknown"; 6239 } 6240} 6241 6242 6243static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv, 6244 const char *ifname, 6245 enum nl80211_iftype iftype, 6246 const u8 *addr, int wds) 6247{ 6248 struct nl_msg *msg; 6249 int ifidx; 6250 int ret = -ENOBUFS; 6251 6252 wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)", 6253 iftype, nl80211_iftype_str(iftype)); 6254 6255 msg = nlmsg_alloc(); 6256 if (!msg) 6257 return -1; 6258 6259 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE); 6260 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6261 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname); 6262 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype); 6263 6264 if (iftype == NL80211_IFTYPE_MONITOR) { 6265 struct nlattr *flags; 6266 6267 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS); 6268 if (!flags) 6269 goto nla_put_failure; 6270 6271 NLA_PUT_FLAG(msg, NL80211_MNTR_FLAG_COOK_FRAMES); 6272 6273 nla_nest_end(msg, flags); 6274 } else if (wds) { 6275 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds); 6276 } 6277 6278 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6279 msg = NULL; 6280 if (ret) { 6281 nla_put_failure: 6282 nlmsg_free(msg); 6283 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)", 6284 ifname, ret, strerror(-ret)); 6285 return ret; 6286 } 6287 6288 ifidx = if_nametoindex(ifname); 6289 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d", 6290 ifname, ifidx); 6291 6292 if (ifidx <= 0) 6293 return -1; 6294 6295 /* start listening for EAPOL on this interface */ 6296 add_ifidx(drv, ifidx); 6297 6298 if (addr && iftype != NL80211_IFTYPE_MONITOR && 6299 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) { 6300 nl80211_remove_iface(drv, ifidx); 6301 return -1; 6302 } 6303 6304 return ifidx; 6305} 6306 6307 6308static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv, 6309 const char *ifname, enum nl80211_iftype iftype, 6310 const u8 *addr, int wds) 6311{ 6312 int ret; 6313 6314 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds); 6315 6316 /* if error occurred and interface exists already */ 6317 if (ret == -ENFILE && if_nametoindex(ifname)) { 6318 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname); 6319 6320 /* Try to remove the interface that was already there. */ 6321 nl80211_remove_iface(drv, if_nametoindex(ifname)); 6322 6323 /* Try to create the interface again */ 6324 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, 6325 wds); 6326 } 6327 6328 if (ret >= 0 && is_p2p_interface(iftype)) 6329 nl80211_disable_11b_rates(drv, ret, 1); 6330 6331 return ret; 6332} 6333 6334 6335static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok) 6336{ 6337 struct ieee80211_hdr *hdr; 6338 u16 fc; 6339 union wpa_event_data event; 6340 6341 hdr = (struct ieee80211_hdr *) buf; 6342 fc = le_to_host16(hdr->frame_control); 6343 6344 os_memset(&event, 0, sizeof(event)); 6345 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 6346 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 6347 event.tx_status.dst = hdr->addr1; 6348 event.tx_status.data = buf; 6349 event.tx_status.data_len = len; 6350 event.tx_status.ack = ok; 6351 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event); 6352} 6353 6354 6355static void from_unknown_sta(struct wpa_driver_nl80211_data *drv, 6356 u8 *buf, size_t len) 6357{ 6358 struct ieee80211_hdr *hdr = (void *)buf; 6359 u16 fc; 6360 union wpa_event_data event; 6361 6362 if (len < sizeof(*hdr)) 6363 return; 6364 6365 fc = le_to_host16(hdr->frame_control); 6366 6367 os_memset(&event, 0, sizeof(event)); 6368 event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len); 6369 event.rx_from_unknown.addr = hdr->addr2; 6370 event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) == 6371 (WLAN_FC_FROMDS | WLAN_FC_TODS); 6372 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 6373} 6374 6375 6376static void handle_frame(struct wpa_driver_nl80211_data *drv, 6377 u8 *buf, size_t len, int datarate, int ssi_signal) 6378{ 6379 struct ieee80211_hdr *hdr; 6380 u16 fc; 6381 union wpa_event_data event; 6382 6383 hdr = (struct ieee80211_hdr *) buf; 6384 fc = le_to_host16(hdr->frame_control); 6385 6386 switch (WLAN_FC_GET_TYPE(fc)) { 6387 case WLAN_FC_TYPE_MGMT: 6388 os_memset(&event, 0, sizeof(event)); 6389 event.rx_mgmt.frame = buf; 6390 event.rx_mgmt.frame_len = len; 6391 event.rx_mgmt.datarate = datarate; 6392 event.rx_mgmt.ssi_signal = ssi_signal; 6393 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 6394 break; 6395 case WLAN_FC_TYPE_CTRL: 6396 /* can only get here with PS-Poll frames */ 6397 wpa_printf(MSG_DEBUG, "CTRL"); 6398 from_unknown_sta(drv, buf, len); 6399 break; 6400 case WLAN_FC_TYPE_DATA: 6401 from_unknown_sta(drv, buf, len); 6402 break; 6403 } 6404} 6405 6406 6407static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx) 6408{ 6409 struct wpa_driver_nl80211_data *drv = eloop_ctx; 6410 int len; 6411 unsigned char buf[3000]; 6412 struct ieee80211_radiotap_iterator iter; 6413 int ret; 6414 int datarate = 0, ssi_signal = 0; 6415 int injected = 0, failed = 0, rxflags = 0; 6416 6417 len = recv(sock, buf, sizeof(buf), 0); 6418 if (len < 0) { 6419 perror("recv"); 6420 return; 6421 } 6422 6423 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) { 6424 printf("received invalid radiotap frame\n"); 6425 return; 6426 } 6427 6428 while (1) { 6429 ret = ieee80211_radiotap_iterator_next(&iter); 6430 if (ret == -ENOENT) 6431 break; 6432 if (ret) { 6433 printf("received invalid radiotap frame (%d)\n", ret); 6434 return; 6435 } 6436 switch (iter.this_arg_index) { 6437 case IEEE80211_RADIOTAP_FLAGS: 6438 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS) 6439 len -= 4; 6440 break; 6441 case IEEE80211_RADIOTAP_RX_FLAGS: 6442 rxflags = 1; 6443 break; 6444 case IEEE80211_RADIOTAP_TX_FLAGS: 6445 injected = 1; 6446 failed = le_to_host16((*(uint16_t *) iter.this_arg)) & 6447 IEEE80211_RADIOTAP_F_TX_FAIL; 6448 break; 6449 case IEEE80211_RADIOTAP_DATA_RETRIES: 6450 break; 6451 case IEEE80211_RADIOTAP_CHANNEL: 6452 /* TODO: convert from freq/flags to channel number */ 6453 break; 6454 case IEEE80211_RADIOTAP_RATE: 6455 datarate = *iter.this_arg * 5; 6456 break; 6457 case IEEE80211_RADIOTAP_DBM_ANTSIGNAL: 6458 ssi_signal = (s8) *iter.this_arg; 6459 break; 6460 } 6461 } 6462 6463 if (rxflags && injected) 6464 return; 6465 6466 if (!injected) 6467 handle_frame(drv, buf + iter.max_length, 6468 len - iter.max_length, datarate, ssi_signal); 6469 else 6470 handle_tx_callback(drv->ctx, buf + iter.max_length, 6471 len - iter.max_length, !failed); 6472} 6473 6474 6475/* 6476 * we post-process the filter code later and rewrite 6477 * this to the offset to the last instruction 6478 */ 6479#define PASS 0xFF 6480#define FAIL 0xFE 6481 6482static struct sock_filter msock_filter_insns[] = { 6483 /* 6484 * do a little-endian load of the radiotap length field 6485 */ 6486 /* load lower byte into A */ 6487 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2), 6488 /* put it into X (== index register) */ 6489 BPF_STMT(BPF_MISC| BPF_TAX, 0), 6490 /* load upper byte into A */ 6491 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3), 6492 /* left-shift it by 8 */ 6493 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8), 6494 /* or with X */ 6495 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0), 6496 /* put result into X */ 6497 BPF_STMT(BPF_MISC| BPF_TAX, 0), 6498 6499 /* 6500 * Allow management frames through, this also gives us those 6501 * management frames that we sent ourselves with status 6502 */ 6503 /* load the lower byte of the IEEE 802.11 frame control field */ 6504 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6505 /* mask off frame type and version */ 6506 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF), 6507 /* accept frame if it's both 0, fall through otherwise */ 6508 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0), 6509 6510 /* 6511 * TODO: add a bit to radiotap RX flags that indicates 6512 * that the sending station is not associated, then 6513 * add a filter here that filters on our DA and that flag 6514 * to allow us to deauth frames to that bad station. 6515 * 6516 * For now allow all To DS data frames through. 6517 */ 6518 /* load the IEEE 802.11 frame control field */ 6519 BPF_STMT(BPF_LD | BPF_H | BPF_IND, 0), 6520 /* mask off frame type, version and DS status */ 6521 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03), 6522 /* accept frame if version 0, type 2 and To DS, fall through otherwise 6523 */ 6524 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0), 6525 6526#if 0 6527 /* 6528 * drop non-data frames 6529 */ 6530 /* load the lower byte of the frame control field */ 6531 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6532 /* mask off QoS bit */ 6533 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c), 6534 /* drop non-data frames */ 6535 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL), 6536#endif 6537 /* load the upper byte of the frame control field */ 6538 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1), 6539 /* mask off toDS/fromDS */ 6540 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03), 6541 /* accept WDS frames */ 6542 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0), 6543 6544 /* 6545 * add header length to index 6546 */ 6547 /* load the lower byte of the frame control field */ 6548 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6549 /* mask off QoS bit */ 6550 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80), 6551 /* right shift it by 6 to give 0 or 2 */ 6552 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6), 6553 /* add data frame header length */ 6554 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24), 6555 /* add index, was start of 802.11 header */ 6556 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0), 6557 /* move to index, now start of LL header */ 6558 BPF_STMT(BPF_MISC | BPF_TAX, 0), 6559 6560 /* 6561 * Accept empty data frames, we use those for 6562 * polling activity. 6563 */ 6564 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0), 6565 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0), 6566 6567 /* 6568 * Accept EAPOL frames 6569 */ 6570 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0), 6571 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL), 6572 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4), 6573 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL), 6574 6575 /* keep these last two statements or change the code below */ 6576 /* return 0 == "DROP" */ 6577 BPF_STMT(BPF_RET | BPF_K, 0), 6578 /* return ~0 == "keep all" */ 6579 BPF_STMT(BPF_RET | BPF_K, ~0), 6580}; 6581 6582static struct sock_fprog msock_filter = { 6583 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]), 6584 .filter = msock_filter_insns, 6585}; 6586 6587 6588static int add_monitor_filter(int s) 6589{ 6590 int idx; 6591 6592 /* rewrite all PASS/FAIL jump offsets */ 6593 for (idx = 0; idx < msock_filter.len; idx++) { 6594 struct sock_filter *insn = &msock_filter_insns[idx]; 6595 6596 if (BPF_CLASS(insn->code) == BPF_JMP) { 6597 if (insn->code == (BPF_JMP|BPF_JA)) { 6598 if (insn->k == PASS) 6599 insn->k = msock_filter.len - idx - 2; 6600 else if (insn->k == FAIL) 6601 insn->k = msock_filter.len - idx - 3; 6602 } 6603 6604 if (insn->jt == PASS) 6605 insn->jt = msock_filter.len - idx - 2; 6606 else if (insn->jt == FAIL) 6607 insn->jt = msock_filter.len - idx - 3; 6608 6609 if (insn->jf == PASS) 6610 insn->jf = msock_filter.len - idx - 2; 6611 else if (insn->jf == FAIL) 6612 insn->jf = msock_filter.len - idx - 3; 6613 } 6614 } 6615 6616 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER, 6617 &msock_filter, sizeof(msock_filter))) { 6618 perror("SO_ATTACH_FILTER"); 6619 return -1; 6620 } 6621 6622 return 0; 6623} 6624 6625 6626static void nl80211_remove_monitor_interface( 6627 struct wpa_driver_nl80211_data *drv) 6628{ 6629 drv->monitor_refcount--; 6630 if (drv->monitor_refcount > 0) 6631 return; 6632 6633 if (drv->monitor_ifidx >= 0) { 6634 nl80211_remove_iface(drv, drv->monitor_ifidx); 6635 drv->monitor_ifidx = -1; 6636 } 6637 if (drv->monitor_sock >= 0) { 6638 eloop_unregister_read_sock(drv->monitor_sock); 6639 close(drv->monitor_sock); 6640 drv->monitor_sock = -1; 6641 } 6642} 6643 6644 6645static int 6646nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv) 6647{ 6648 char buf[IFNAMSIZ]; 6649 struct sockaddr_ll ll; 6650 int optval; 6651 socklen_t optlen; 6652 6653 if (drv->monitor_ifidx >= 0) { 6654 drv->monitor_refcount++; 6655 return 0; 6656 } 6657 6658 if (os_strncmp(drv->first_bss.ifname, "p2p-", 4) == 0) { 6659 /* 6660 * P2P interface name is of the format p2p-%s-%d. For monitor 6661 * interface name corresponding to P2P GO, replace "p2p-" with 6662 * "mon-" to retain the same interface name length and to 6663 * indicate that it is a monitor interface. 6664 */ 6665 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss.ifname + 4); 6666 } else { 6667 /* Non-P2P interface with AP functionality. */ 6668 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname); 6669 } 6670 6671 buf[IFNAMSIZ - 1] = '\0'; 6672 6673 drv->monitor_ifidx = 6674 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL, 6675 0); 6676 6677 if (drv->monitor_ifidx == -EOPNOTSUPP) { 6678 /* 6679 * This is backward compatibility for a few versions of 6680 * the kernel only that didn't advertise the right 6681 * attributes for the only driver that then supported 6682 * AP mode w/o monitor -- ath6kl. 6683 */ 6684 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support " 6685 "monitor interface type - try to run without it"); 6686 drv->device_ap_sme = 1; 6687 } 6688 6689 if (drv->monitor_ifidx < 0) 6690 return -1; 6691 6692 if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1)) 6693 goto error; 6694 6695 memset(&ll, 0, sizeof(ll)); 6696 ll.sll_family = AF_PACKET; 6697 ll.sll_ifindex = drv->monitor_ifidx; 6698 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); 6699 if (drv->monitor_sock < 0) { 6700 perror("socket[PF_PACKET,SOCK_RAW]"); 6701 goto error; 6702 } 6703 6704 if (add_monitor_filter(drv->monitor_sock)) { 6705 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor " 6706 "interface; do filtering in user space"); 6707 /* This works, but will cost in performance. */ 6708 } 6709 6710 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) { 6711 perror("monitor socket bind"); 6712 goto error; 6713 } 6714 6715 optlen = sizeof(optval); 6716 optval = 20; 6717 if (setsockopt 6718 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) { 6719 perror("Failed to set socket priority"); 6720 goto error; 6721 } 6722 6723 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read, 6724 drv, NULL)) { 6725 printf("Could not register monitor read socket\n"); 6726 goto error; 6727 } 6728 6729 return 0; 6730 error: 6731 nl80211_remove_monitor_interface(drv); 6732 return -1; 6733} 6734 6735 6736static int nl80211_setup_ap(struct i802_bss *bss) 6737{ 6738 struct wpa_driver_nl80211_data *drv = bss->drv; 6739 6740 wpa_printf(MSG_DEBUG, "nl80211: Setup AP - device_ap_sme=%d " 6741 "use_monitor=%d", drv->device_ap_sme, drv->use_monitor); 6742 6743 /* 6744 * Disable Probe Request reporting unless we need it in this way for 6745 * devices that include the AP SME, in the other case (unless using 6746 * monitor iface) we'll get it through the nl_mgmt socket instead. 6747 */ 6748 if (!drv->device_ap_sme) 6749 wpa_driver_nl80211_probe_req_report(bss, 0); 6750 6751 if (!drv->device_ap_sme && !drv->use_monitor) 6752 if (nl80211_mgmt_subscribe_ap(bss)) 6753 return -1; 6754 6755 if (drv->device_ap_sme && !drv->use_monitor) 6756 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 6757 return -1; 6758 6759 if (!drv->device_ap_sme && drv->use_monitor && 6760 nl80211_create_monitor_interface(drv) && 6761 !drv->device_ap_sme) 6762 return -1; 6763 6764#ifdef ANDROID_P2P 6765 if (drv->device_ap_sme && drv->use_monitor) 6766 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 6767 return -1; 6768 6769 if (drv->use_monitor && 6770 nl80211_create_monitor_interface(drv)) 6771 return -1; 6772#endif 6773 6774 if (drv->device_ap_sme && 6775 wpa_driver_nl80211_probe_req_report(bss, 1) < 0) { 6776 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable " 6777 "Probe Request frame reporting in AP mode"); 6778 /* Try to survive without this */ 6779 } 6780 6781 return 0; 6782} 6783 6784 6785static void nl80211_teardown_ap(struct i802_bss *bss) 6786{ 6787 struct wpa_driver_nl80211_data *drv = bss->drv; 6788 6789 if (drv->device_ap_sme) { 6790 wpa_driver_nl80211_probe_req_report(bss, 0); 6791 if (!drv->use_monitor) 6792 nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)"); 6793 } else if (drv->use_monitor) 6794 nl80211_remove_monitor_interface(drv); 6795 else 6796 nl80211_mgmt_unsubscribe(bss, "AP teardown"); 6797 6798 bss->beacon_set = 0; 6799} 6800 6801 6802static int nl80211_send_eapol_data(struct i802_bss *bss, 6803 const u8 *addr, const u8 *data, 6804 size_t data_len) 6805{ 6806 struct sockaddr_ll ll; 6807 int ret; 6808 6809 if (bss->drv->eapol_tx_sock < 0) { 6810 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL"); 6811 return -1; 6812 } 6813 6814 os_memset(&ll, 0, sizeof(ll)); 6815 ll.sll_family = AF_PACKET; 6816 ll.sll_ifindex = bss->ifindex; 6817 ll.sll_protocol = htons(ETH_P_PAE); 6818 ll.sll_halen = ETH_ALEN; 6819 os_memcpy(ll.sll_addr, addr, ETH_ALEN); 6820 ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0, 6821 (struct sockaddr *) &ll, sizeof(ll)); 6822 if (ret < 0) 6823 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s", 6824 strerror(errno)); 6825 6826 return ret; 6827} 6828 6829 6830static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 6831 6832static int wpa_driver_nl80211_hapd_send_eapol( 6833 void *priv, const u8 *addr, const u8 *data, 6834 size_t data_len, int encrypt, const u8 *own_addr, u32 flags) 6835{ 6836 struct i802_bss *bss = priv; 6837 struct wpa_driver_nl80211_data *drv = bss->drv; 6838 struct ieee80211_hdr *hdr; 6839 size_t len; 6840 u8 *pos; 6841 int res; 6842 int qos = flags & WPA_STA_WMM; 6843#ifndef ANDROID_P2P 6844 if (drv->device_ap_sme || !drv->use_monitor) 6845#else 6846 if (drv->device_ap_sme && !drv->use_monitor) 6847#endif 6848 return nl80211_send_eapol_data(bss, addr, data, data_len); 6849 6850 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 + 6851 data_len; 6852 hdr = os_zalloc(len); 6853 if (hdr == NULL) { 6854 printf("malloc() failed for i802_send_data(len=%lu)\n", 6855 (unsigned long) len); 6856 return -1; 6857 } 6858 6859 hdr->frame_control = 6860 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA); 6861 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS); 6862 if (encrypt) 6863 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP); 6864 if (qos) { 6865 hdr->frame_control |= 6866 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4); 6867 } 6868 6869 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN); 6870 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 6871 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 6872 pos = (u8 *) (hdr + 1); 6873 6874 if (qos) { 6875 /* Set highest priority in QoS header */ 6876 pos[0] = 7; 6877 pos[1] = 0; 6878 pos += 2; 6879 } 6880 6881 memcpy(pos, rfc1042_header, sizeof(rfc1042_header)); 6882 pos += sizeof(rfc1042_header); 6883 WPA_PUT_BE16(pos, ETH_P_PAE); 6884 pos += 2; 6885 memcpy(pos, data, data_len); 6886 6887 res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0, 6888 0, 0, 0, 0); 6889 if (res < 0) { 6890 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - " 6891 "failed: %d (%s)", 6892 (unsigned long) len, errno, strerror(errno)); 6893 } 6894 os_free(hdr); 6895 6896 return res; 6897} 6898 6899 6900static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr, 6901 int total_flags, 6902 int flags_or, int flags_and) 6903{ 6904 struct i802_bss *bss = priv; 6905 struct wpa_driver_nl80211_data *drv = bss->drv; 6906 struct nl_msg *msg; 6907 struct nlattr *flags; 6908 struct nl80211_sta_flag_update upd; 6909 6910 msg = nlmsg_alloc(); 6911 if (!msg) 6912 return -ENOMEM; 6913 6914 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 6915 6916 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 6917 if_nametoindex(bss->ifname)); 6918 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 6919 6920 /* 6921 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This 6922 * can be removed eventually. 6923 */ 6924 flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS); 6925 if (!flags) 6926 goto nla_put_failure; 6927 if (total_flags & WPA_STA_AUTHORIZED) 6928 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_AUTHORIZED); 6929 6930 if (total_flags & WPA_STA_WMM) 6931 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_WME); 6932 6933 if (total_flags & WPA_STA_SHORT_PREAMBLE) 6934 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_SHORT_PREAMBLE); 6935 6936 if (total_flags & WPA_STA_MFP) 6937 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_MFP); 6938 6939 if (total_flags & WPA_STA_TDLS_PEER) 6940 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_TDLS_PEER); 6941 6942 nla_nest_end(msg, flags); 6943 6944 os_memset(&upd, 0, sizeof(upd)); 6945 upd.mask = sta_flags_nl80211(flags_or | ~flags_and); 6946 upd.set = sta_flags_nl80211(flags_or); 6947 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 6948 6949 return send_and_recv_msgs(drv, msg, NULL, NULL); 6950 nla_put_failure: 6951 nlmsg_free(msg); 6952 return -ENOBUFS; 6953} 6954 6955 6956static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv, 6957 struct wpa_driver_associate_params *params) 6958{ 6959 enum nl80211_iftype nlmode, old_mode; 6960 struct hostapd_freq_params freq = { 6961 .freq = params->freq, 6962 }; 6963 6964 if (params->p2p) { 6965 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P " 6966 "group (GO)"); 6967 nlmode = NL80211_IFTYPE_P2P_GO; 6968 } else 6969 nlmode = NL80211_IFTYPE_AP; 6970 6971 old_mode = drv->nlmode; 6972 if (wpa_driver_nl80211_set_mode(&drv->first_bss, nlmode)) { 6973 nl80211_remove_monitor_interface(drv); 6974 return -1; 6975 } 6976 6977 if (wpa_driver_nl80211_set_freq(&drv->first_bss, &freq)) { 6978 if (old_mode != nlmode) 6979 wpa_driver_nl80211_set_mode(&drv->first_bss, old_mode); 6980 nl80211_remove_monitor_interface(drv); 6981 return -1; 6982 } 6983 6984 return 0; 6985} 6986 6987 6988static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv) 6989{ 6990 struct nl_msg *msg; 6991 int ret = -1; 6992 6993 msg = nlmsg_alloc(); 6994 if (!msg) 6995 return -1; 6996 6997 nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS); 6998 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6999 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7000 msg = NULL; 7001 if (ret) { 7002 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d " 7003 "(%s)", ret, strerror(-ret)); 7004 goto nla_put_failure; 7005 } 7006 7007 ret = 0; 7008 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully"); 7009 7010nla_put_failure: 7011 nlmsg_free(msg); 7012 return ret; 7013} 7014 7015 7016static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv, 7017 struct wpa_driver_associate_params *params) 7018{ 7019 struct nl_msg *msg; 7020 int ret = -1; 7021 int count = 0; 7022 7023 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex); 7024 7025 if (wpa_driver_nl80211_set_mode(&drv->first_bss, 7026 NL80211_IFTYPE_ADHOC)) { 7027 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into " 7028 "IBSS mode"); 7029 return -1; 7030 } 7031 7032retry: 7033 msg = nlmsg_alloc(); 7034 if (!msg) 7035 return -1; 7036 7037 nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS); 7038 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7039 7040 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid)) 7041 goto nla_put_failure; 7042 7043 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 7044 params->ssid, params->ssid_len); 7045 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 7046 params->ssid); 7047 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 7048 drv->ssid_len = params->ssid_len; 7049 7050 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 7051 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 7052 7053 ret = nl80211_set_conn_keys(params, msg); 7054 if (ret) 7055 goto nla_put_failure; 7056 7057 if (params->bssid && params->fixed_bssid) { 7058 wpa_printf(MSG_DEBUG, " * BSSID=" MACSTR, 7059 MAC2STR(params->bssid)); 7060 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 7061 } 7062 7063 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 7064 params->key_mgmt_suite == KEY_MGMT_PSK || 7065 params->key_mgmt_suite == KEY_MGMT_802_1X_SHA256 || 7066 params->key_mgmt_suite == KEY_MGMT_PSK_SHA256) { 7067 wpa_printf(MSG_DEBUG, " * control port"); 7068 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 7069 } 7070 7071 if (params->wpa_ie) { 7072 wpa_hexdump(MSG_DEBUG, 7073 " * Extra IEs for Beacon/Probe Response frames", 7074 params->wpa_ie, params->wpa_ie_len); 7075 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 7076 params->wpa_ie); 7077 } 7078 7079 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7080 msg = NULL; 7081 if (ret) { 7082 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)", 7083 ret, strerror(-ret)); 7084 count++; 7085 if (ret == -EALREADY && count == 1) { 7086 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after " 7087 "forced leave"); 7088 nl80211_leave_ibss(drv); 7089 nlmsg_free(msg); 7090 goto retry; 7091 } 7092 7093 goto nla_put_failure; 7094 } 7095 ret = 0; 7096 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully"); 7097 7098nla_put_failure: 7099 nlmsg_free(msg); 7100 return ret; 7101} 7102 7103 7104static int wpa_driver_nl80211_try_connect( 7105 struct wpa_driver_nl80211_data *drv, 7106 struct wpa_driver_associate_params *params) 7107{ 7108 struct nl_msg *msg; 7109 enum nl80211_auth_type type; 7110 int ret = 0; 7111 int algs; 7112 7113 msg = nlmsg_alloc(); 7114 if (!msg) 7115 return -1; 7116 7117 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex); 7118 nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT); 7119 7120 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7121 if (params->bssid) { 7122 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 7123 MAC2STR(params->bssid)); 7124 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 7125 } 7126 if (params->freq) { 7127 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 7128 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 7129 } 7130 if (params->bg_scan_period >= 0) { 7131 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 7132 params->bg_scan_period); 7133 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 7134 params->bg_scan_period); 7135 } 7136 if (params->ssid) { 7137 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 7138 params->ssid, params->ssid_len); 7139 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 7140 params->ssid); 7141 if (params->ssid_len > sizeof(drv->ssid)) 7142 goto nla_put_failure; 7143 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 7144 drv->ssid_len = params->ssid_len; 7145 } 7146 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 7147 if (params->wpa_ie) 7148 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 7149 params->wpa_ie); 7150 7151 algs = 0; 7152 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 7153 algs++; 7154 if (params->auth_alg & WPA_AUTH_ALG_SHARED) 7155 algs++; 7156 if (params->auth_alg & WPA_AUTH_ALG_LEAP) 7157 algs++; 7158 if (algs > 1) { 7159 wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic " 7160 "selection"); 7161 goto skip_auth_type; 7162 } 7163 7164 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 7165 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 7166 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 7167 type = NL80211_AUTHTYPE_SHARED_KEY; 7168 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 7169 type = NL80211_AUTHTYPE_NETWORK_EAP; 7170 else if (params->auth_alg & WPA_AUTH_ALG_FT) 7171 type = NL80211_AUTHTYPE_FT; 7172 else 7173 goto nla_put_failure; 7174 7175 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 7176 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 7177 7178skip_auth_type: 7179 if (params->wpa_proto) { 7180 enum nl80211_wpa_versions ver = 0; 7181 7182 if (params->wpa_proto & WPA_PROTO_WPA) 7183 ver |= NL80211_WPA_VERSION_1; 7184 if (params->wpa_proto & WPA_PROTO_RSN) 7185 ver |= NL80211_WPA_VERSION_2; 7186 7187 wpa_printf(MSG_DEBUG, " * WPA Versions 0x%x", ver); 7188 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 7189 } 7190 7191 if (params->pairwise_suite != CIPHER_NONE) { 7192 int cipher; 7193 7194 switch (params->pairwise_suite) { 7195 case CIPHER_SMS4: 7196 cipher = WLAN_CIPHER_SUITE_SMS4; 7197 break; 7198 case CIPHER_WEP40: 7199 cipher = WLAN_CIPHER_SUITE_WEP40; 7200 break; 7201 case CIPHER_WEP104: 7202 cipher = WLAN_CIPHER_SUITE_WEP104; 7203 break; 7204 case CIPHER_CCMP: 7205 cipher = WLAN_CIPHER_SUITE_CCMP; 7206 break; 7207 case CIPHER_GCMP: 7208 cipher = WLAN_CIPHER_SUITE_GCMP; 7209 break; 7210 case CIPHER_TKIP: 7211 default: 7212 cipher = WLAN_CIPHER_SUITE_TKIP; 7213 break; 7214 } 7215 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 7216 } 7217 7218 if (params->group_suite != CIPHER_NONE) { 7219 int cipher; 7220 7221 switch (params->group_suite) { 7222 case CIPHER_SMS4: 7223 cipher = WLAN_CIPHER_SUITE_SMS4; 7224 break; 7225 case CIPHER_WEP40: 7226 cipher = WLAN_CIPHER_SUITE_WEP40; 7227 break; 7228 case CIPHER_WEP104: 7229 cipher = WLAN_CIPHER_SUITE_WEP104; 7230 break; 7231 case CIPHER_CCMP: 7232 cipher = WLAN_CIPHER_SUITE_CCMP; 7233 break; 7234 case CIPHER_GCMP: 7235 cipher = WLAN_CIPHER_SUITE_GCMP; 7236 break; 7237 case CIPHER_TKIP: 7238 default: 7239 cipher = WLAN_CIPHER_SUITE_TKIP; 7240 break; 7241 } 7242 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 7243 } 7244 7245 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 7246 params->key_mgmt_suite == KEY_MGMT_PSK || 7247 params->key_mgmt_suite == KEY_MGMT_FT_802_1X || 7248 params->key_mgmt_suite == KEY_MGMT_FT_PSK || 7249 params->key_mgmt_suite == KEY_MGMT_CCKM) { 7250 int mgmt = WLAN_AKM_SUITE_PSK; 7251 7252 switch (params->key_mgmt_suite) { 7253 case KEY_MGMT_CCKM: 7254 mgmt = WLAN_AKM_SUITE_CCKM; 7255 break; 7256 case KEY_MGMT_802_1X: 7257 mgmt = WLAN_AKM_SUITE_8021X; 7258 break; 7259 case KEY_MGMT_FT_802_1X: 7260 mgmt = WLAN_AKM_SUITE_FT_8021X; 7261 break; 7262 case KEY_MGMT_FT_PSK: 7263 mgmt = WLAN_AKM_SUITE_FT_PSK; 7264 break; 7265 case KEY_MGMT_PSK: 7266 default: 7267 mgmt = WLAN_AKM_SUITE_PSK; 7268 break; 7269 } 7270 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt); 7271 } 7272 7273#ifdef CONFIG_IEEE80211W 7274 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED) 7275 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED); 7276#endif /* CONFIG_IEEE80211W */ 7277 7278 if (params->disable_ht) 7279 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 7280 7281 if (params->htcaps && params->htcaps_mask) { 7282 int sz = sizeof(struct ieee80211_ht_capabilities); 7283 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 7284 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 7285 params->htcaps_mask); 7286 } 7287 7288#ifdef CONFIG_VHT_OVERRIDES 7289 if (params->disable_vht) { 7290 wpa_printf(MSG_DEBUG, " * VHT disabled"); 7291 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_VHT); 7292 } 7293 7294 if (params->vhtcaps && params->vhtcaps_mask) { 7295 int sz = sizeof(struct ieee80211_vht_capabilities); 7296 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, sz, params->vhtcaps); 7297 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz, 7298 params->vhtcaps_mask); 7299 } 7300#endif /* CONFIG_VHT_OVERRIDES */ 7301 7302 ret = nl80211_set_conn_keys(params, msg); 7303 if (ret) 7304 goto nla_put_failure; 7305 7306 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7307 msg = NULL; 7308 if (ret) { 7309 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d " 7310 "(%s)", ret, strerror(-ret)); 7311 goto nla_put_failure; 7312 } 7313 ret = 0; 7314 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully"); 7315 7316nla_put_failure: 7317 nlmsg_free(msg); 7318 return ret; 7319 7320} 7321 7322 7323static int wpa_driver_nl80211_connect( 7324 struct wpa_driver_nl80211_data *drv, 7325 struct wpa_driver_associate_params *params) 7326{ 7327 int ret = wpa_driver_nl80211_try_connect(drv, params); 7328 if (ret == -EALREADY) { 7329 /* 7330 * cfg80211 does not currently accept new connections if 7331 * we are already connected. As a workaround, force 7332 * disconnection and try again. 7333 */ 7334 wpa_printf(MSG_DEBUG, "nl80211: Explicitly " 7335 "disconnecting before reassociation " 7336 "attempt"); 7337 if (wpa_driver_nl80211_disconnect( 7338 drv, WLAN_REASON_PREV_AUTH_NOT_VALID)) 7339 return -1; 7340 /* Ignore the next local disconnect message. */ 7341 drv->ignore_next_local_disconnect = 1; 7342 ret = wpa_driver_nl80211_try_connect(drv, params); 7343 } 7344 return ret; 7345} 7346 7347 7348static int wpa_driver_nl80211_associate( 7349 void *priv, struct wpa_driver_associate_params *params) 7350{ 7351 struct i802_bss *bss = priv; 7352 struct wpa_driver_nl80211_data *drv = bss->drv; 7353 int ret = -1; 7354 struct nl_msg *msg; 7355 7356 if (params->mode == IEEE80211_MODE_AP) 7357 return wpa_driver_nl80211_ap(drv, params); 7358 7359 if (params->mode == IEEE80211_MODE_IBSS) 7360 return wpa_driver_nl80211_ibss(drv, params); 7361 7362 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) { 7363 enum nl80211_iftype nlmode = params->p2p ? 7364 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 7365 7366 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0) 7367 return -1; 7368 return wpa_driver_nl80211_connect(drv, params); 7369 } 7370 7371 drv->associated = 0; 7372 7373 msg = nlmsg_alloc(); 7374 if (!msg) 7375 return -1; 7376 7377 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)", 7378 drv->ifindex); 7379 nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE); 7380 7381 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7382 if (params->bssid) { 7383 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 7384 MAC2STR(params->bssid)); 7385 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 7386 } 7387 if (params->freq) { 7388 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 7389 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 7390 drv->assoc_freq = params->freq; 7391 } else 7392 drv->assoc_freq = 0; 7393 if (params->bg_scan_period >= 0) { 7394 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 7395 params->bg_scan_period); 7396 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 7397 params->bg_scan_period); 7398 } 7399 if (params->ssid) { 7400 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 7401 params->ssid, params->ssid_len); 7402 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 7403 params->ssid); 7404 if (params->ssid_len > sizeof(drv->ssid)) 7405 goto nla_put_failure; 7406 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 7407 drv->ssid_len = params->ssid_len; 7408 } 7409 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 7410 if (params->wpa_ie) 7411 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 7412 params->wpa_ie); 7413 7414 if (params->pairwise_suite != CIPHER_NONE) { 7415 int cipher; 7416 7417 switch (params->pairwise_suite) { 7418 case CIPHER_WEP40: 7419 cipher = WLAN_CIPHER_SUITE_WEP40; 7420 break; 7421 case CIPHER_WEP104: 7422 cipher = WLAN_CIPHER_SUITE_WEP104; 7423 break; 7424 case CIPHER_CCMP: 7425 cipher = WLAN_CIPHER_SUITE_CCMP; 7426 break; 7427 case CIPHER_GCMP: 7428 cipher = WLAN_CIPHER_SUITE_GCMP; 7429 break; 7430 case CIPHER_TKIP: 7431 default: 7432 cipher = WLAN_CIPHER_SUITE_TKIP; 7433 break; 7434 } 7435 wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher); 7436 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 7437 } 7438 7439 if (params->group_suite != CIPHER_NONE) { 7440 int cipher; 7441 7442 switch (params->group_suite) { 7443 case CIPHER_WEP40: 7444 cipher = WLAN_CIPHER_SUITE_WEP40; 7445 break; 7446 case CIPHER_WEP104: 7447 cipher = WLAN_CIPHER_SUITE_WEP104; 7448 break; 7449 case CIPHER_CCMP: 7450 cipher = WLAN_CIPHER_SUITE_CCMP; 7451 break; 7452 case CIPHER_GCMP: 7453 cipher = WLAN_CIPHER_SUITE_GCMP; 7454 break; 7455 case CIPHER_TKIP: 7456 default: 7457 cipher = WLAN_CIPHER_SUITE_TKIP; 7458 break; 7459 } 7460 wpa_printf(MSG_DEBUG, " * group=0x%x", cipher); 7461 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 7462 } 7463 7464#ifdef CONFIG_IEEE80211W 7465 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED) 7466 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED); 7467#endif /* CONFIG_IEEE80211W */ 7468 7469 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 7470 7471 if (params->prev_bssid) { 7472 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR, 7473 MAC2STR(params->prev_bssid)); 7474 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN, 7475 params->prev_bssid); 7476 } 7477 7478 if (params->disable_ht) 7479 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 7480 7481 if (params->htcaps && params->htcaps_mask) { 7482 int sz = sizeof(struct ieee80211_ht_capabilities); 7483 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 7484 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 7485 params->htcaps_mask); 7486 } 7487 7488#ifdef CONFIG_VHT_OVERRIDES 7489 if (params->disable_vht) { 7490 wpa_printf(MSG_DEBUG, " * VHT disabled"); 7491 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_VHT); 7492 } 7493 7494 if (params->vhtcaps && params->vhtcaps_mask) { 7495 int sz = sizeof(struct ieee80211_vht_capabilities); 7496 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, sz, params->vhtcaps); 7497 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz, 7498 params->vhtcaps_mask); 7499 } 7500#endif /* CONFIG_VHT_OVERRIDES */ 7501 7502 if (params->p2p) 7503 wpa_printf(MSG_DEBUG, " * P2P group"); 7504 7505 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7506 msg = NULL; 7507 if (ret) { 7508 wpa_dbg(drv->ctx, MSG_DEBUG, 7509 "nl80211: MLME command failed (assoc): ret=%d (%s)", 7510 ret, strerror(-ret)); 7511 nl80211_dump_scan(drv); 7512 goto nla_put_failure; 7513 } 7514 ret = 0; 7515 wpa_printf(MSG_DEBUG, "nl80211: Association request send " 7516 "successfully"); 7517 7518nla_put_failure: 7519 nlmsg_free(msg); 7520 return ret; 7521} 7522 7523 7524static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv, 7525 int ifindex, enum nl80211_iftype mode) 7526{ 7527 struct nl_msg *msg; 7528 int ret = -ENOBUFS; 7529 7530 wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)", 7531 ifindex, mode, nl80211_iftype_str(mode)); 7532 7533 msg = nlmsg_alloc(); 7534 if (!msg) 7535 return -ENOMEM; 7536 7537 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE); 7538 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 7539 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode); 7540 7541 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7542 msg = NULL; 7543 if (!ret) 7544 return 0; 7545nla_put_failure: 7546 nlmsg_free(msg); 7547 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:" 7548 " %d (%s)", ifindex, mode, ret, strerror(-ret)); 7549 return ret; 7550} 7551 7552 7553static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, 7554 enum nl80211_iftype nlmode) 7555{ 7556 struct wpa_driver_nl80211_data *drv = bss->drv; 7557 int ret = -1; 7558 int i; 7559 int was_ap = is_ap_interface(drv->nlmode); 7560 int res; 7561 7562 res = nl80211_set_mode(drv, drv->ifindex, nlmode); 7563 if (res == 0) { 7564 drv->nlmode = nlmode; 7565 ret = 0; 7566 goto done; 7567 } 7568 7569 if (res == -ENODEV) 7570 return -1; 7571 7572 if (nlmode == drv->nlmode) { 7573 wpa_printf(MSG_DEBUG, "nl80211: Interface already in " 7574 "requested mode - ignore error"); 7575 ret = 0; 7576 goto done; /* Already in the requested mode */ 7577 } 7578 7579 /* mac80211 doesn't allow mode changes while the device is up, so 7580 * take the device down, try to set the mode again, and bring the 7581 * device back up. 7582 */ 7583 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting " 7584 "interface down"); 7585 for (i = 0; i < 10; i++) { 7586 res = linux_set_iface_flags(drv->global->ioctl_sock, 7587 bss->ifname, 0); 7588 if (res == -EACCES || res == -ENODEV) 7589 break; 7590 if (res == 0) { 7591 /* Try to set the mode again while the interface is 7592 * down */ 7593 ret = nl80211_set_mode(drv, drv->ifindex, nlmode); 7594 if (ret == -EACCES) 7595 break; 7596 res = linux_set_iface_flags(drv->global->ioctl_sock, 7597 bss->ifname, 1); 7598 if (res && !ret) 7599 ret = -1; 7600 else if (ret != -EBUSY) 7601 break; 7602 } else 7603 wpa_printf(MSG_DEBUG, "nl80211: Failed to set " 7604 "interface down"); 7605 os_sleep(0, 100000); 7606 } 7607 7608 if (!ret) { 7609 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while " 7610 "interface is down"); 7611 drv->nlmode = nlmode; 7612 drv->ignore_if_down_event = 1; 7613 } 7614 7615done: 7616 if (ret) { 7617 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d " 7618 "from %d failed", nlmode, drv->nlmode); 7619 return ret; 7620 } 7621 7622 if (is_p2p_interface(nlmode)) 7623 nl80211_disable_11b_rates(drv, drv->ifindex, 1); 7624 else if (drv->disabled_11b_rates) 7625 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 7626 7627 if (is_ap_interface(nlmode)) { 7628 nl80211_mgmt_unsubscribe(bss, "start AP"); 7629 /* Setup additional AP mode functionality if needed */ 7630 if (nl80211_setup_ap(bss)) 7631 return -1; 7632 } else if (was_ap) { 7633 /* Remove additional AP mode functionality */ 7634 nl80211_teardown_ap(bss); 7635 } else { 7636 nl80211_mgmt_unsubscribe(bss, "mode change"); 7637 } 7638 7639 if (!bss->in_deinit && !is_ap_interface(nlmode) && 7640 nl80211_mgmt_subscribe_non_ap(bss) < 0) 7641 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action " 7642 "frame processing - ignore for now"); 7643 7644 return 0; 7645} 7646 7647 7648static int wpa_driver_nl80211_get_capa(void *priv, 7649 struct wpa_driver_capa *capa) 7650{ 7651 struct i802_bss *bss = priv; 7652 struct wpa_driver_nl80211_data *drv = bss->drv; 7653 if (!drv->has_capability) 7654 return -1; 7655 os_memcpy(capa, &drv->capa, sizeof(*capa)); 7656 if (drv->extended_capa && drv->extended_capa_mask) { 7657 capa->extended_capa = drv->extended_capa; 7658 capa->extended_capa_mask = drv->extended_capa_mask; 7659 capa->extended_capa_len = drv->extended_capa_len; 7660 } 7661 return 0; 7662} 7663 7664 7665static int wpa_driver_nl80211_set_operstate(void *priv, int state) 7666{ 7667 struct i802_bss *bss = priv; 7668 struct wpa_driver_nl80211_data *drv = bss->drv; 7669 7670 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)", 7671 __func__, drv->operstate, state, state ? "UP" : "DORMANT"); 7672 drv->operstate = state; 7673 return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1, 7674 state ? IF_OPER_UP : IF_OPER_DORMANT); 7675} 7676 7677 7678static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized) 7679{ 7680 struct i802_bss *bss = priv; 7681 struct wpa_driver_nl80211_data *drv = bss->drv; 7682 struct nl_msg *msg; 7683 struct nl80211_sta_flag_update upd; 7684 7685 msg = nlmsg_alloc(); 7686 if (!msg) 7687 return -ENOMEM; 7688 7689 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 7690 7691 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7692 if_nametoindex(bss->ifname)); 7693 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 7694 7695 os_memset(&upd, 0, sizeof(upd)); 7696 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED); 7697 if (authorized) 7698 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED); 7699 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 7700 7701 return send_and_recv_msgs(drv, msg, NULL, NULL); 7702 nla_put_failure: 7703 nlmsg_free(msg); 7704 return -ENOBUFS; 7705} 7706 7707 7708/* Set kernel driver on given frequency (MHz) */ 7709static int i802_set_freq(void *priv, struct hostapd_freq_params *freq) 7710{ 7711 struct i802_bss *bss = priv; 7712 return wpa_driver_nl80211_set_freq(bss, freq); 7713} 7714 7715 7716#if defined(HOSTAPD) || defined(CONFIG_AP) 7717 7718static inline int min_int(int a, int b) 7719{ 7720 if (a < b) 7721 return a; 7722 return b; 7723} 7724 7725 7726static int get_key_handler(struct nl_msg *msg, void *arg) 7727{ 7728 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7729 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7730 7731 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7732 genlmsg_attrlen(gnlh, 0), NULL); 7733 7734 /* 7735 * TODO: validate the key index and mac address! 7736 * Otherwise, there's a race condition as soon as 7737 * the kernel starts sending key notifications. 7738 */ 7739 7740 if (tb[NL80211_ATTR_KEY_SEQ]) 7741 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]), 7742 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6)); 7743 return NL_SKIP; 7744} 7745 7746 7747static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr, 7748 int idx, u8 *seq) 7749{ 7750 struct i802_bss *bss = priv; 7751 struct wpa_driver_nl80211_data *drv = bss->drv; 7752 struct nl_msg *msg; 7753 7754 msg = nlmsg_alloc(); 7755 if (!msg) 7756 return -ENOMEM; 7757 7758 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY); 7759 7760 if (addr) 7761 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7762 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx); 7763 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface)); 7764 7765 memset(seq, 0, 6); 7766 7767 return send_and_recv_msgs(drv, msg, get_key_handler, seq); 7768 nla_put_failure: 7769 nlmsg_free(msg); 7770 return -ENOBUFS; 7771} 7772 7773 7774static int i802_set_rts(void *priv, int rts) 7775{ 7776 struct i802_bss *bss = priv; 7777 struct wpa_driver_nl80211_data *drv = bss->drv; 7778 struct nl_msg *msg; 7779 int ret = -ENOBUFS; 7780 u32 val; 7781 7782 msg = nlmsg_alloc(); 7783 if (!msg) 7784 return -ENOMEM; 7785 7786 if (rts >= 2347) 7787 val = (u32) -1; 7788 else 7789 val = rts; 7790 7791 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7792 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7793 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val); 7794 7795 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7796 msg = NULL; 7797 if (!ret) 7798 return 0; 7799nla_put_failure: 7800 nlmsg_free(msg); 7801 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: " 7802 "%d (%s)", rts, ret, strerror(-ret)); 7803 return ret; 7804} 7805 7806 7807static int i802_set_frag(void *priv, int frag) 7808{ 7809 struct i802_bss *bss = priv; 7810 struct wpa_driver_nl80211_data *drv = bss->drv; 7811 struct nl_msg *msg; 7812 int ret = -ENOBUFS; 7813 u32 val; 7814 7815 msg = nlmsg_alloc(); 7816 if (!msg) 7817 return -ENOMEM; 7818 7819 if (frag >= 2346) 7820 val = (u32) -1; 7821 else 7822 val = frag; 7823 7824 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7825 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7826 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val); 7827 7828 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7829 msg = NULL; 7830 if (!ret) 7831 return 0; 7832nla_put_failure: 7833 nlmsg_free(msg); 7834 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold " 7835 "%d: %d (%s)", frag, ret, strerror(-ret)); 7836 return ret; 7837} 7838 7839 7840static int i802_flush(void *priv) 7841{ 7842 struct i802_bss *bss = priv; 7843 struct wpa_driver_nl80211_data *drv = bss->drv; 7844 struct nl_msg *msg; 7845 int res; 7846 7847 msg = nlmsg_alloc(); 7848 if (!msg) 7849 return -1; 7850 7851 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 7852 7853 /* 7854 * XXX: FIX! this needs to flush all VLANs too 7855 */ 7856 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7857 if_nametoindex(bss->ifname)); 7858 7859 res = send_and_recv_msgs(drv, msg, NULL, NULL); 7860 if (res) { 7861 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d " 7862 "(%s)", res, strerror(-res)); 7863 } 7864 return res; 7865 nla_put_failure: 7866 nlmsg_free(msg); 7867 return -ENOBUFS; 7868} 7869 7870#endif /* HOSTAPD || CONFIG_AP */ 7871 7872 7873static int get_sta_handler(struct nl_msg *msg, void *arg) 7874{ 7875 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7876 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7877 struct hostap_sta_driver_data *data = arg; 7878 struct nlattr *stats[NL80211_STA_INFO_MAX + 1]; 7879 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = { 7880 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 }, 7881 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 }, 7882 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 }, 7883 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 }, 7884 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 }, 7885 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 }, 7886 }; 7887 7888 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7889 genlmsg_attrlen(gnlh, 0), NULL); 7890 7891 /* 7892 * TODO: validate the interface and mac address! 7893 * Otherwise, there's a race condition as soon as 7894 * the kernel starts sending station notifications. 7895 */ 7896 7897 if (!tb[NL80211_ATTR_STA_INFO]) { 7898 wpa_printf(MSG_DEBUG, "sta stats missing!"); 7899 return NL_SKIP; 7900 } 7901 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX, 7902 tb[NL80211_ATTR_STA_INFO], 7903 stats_policy)) { 7904 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!"); 7905 return NL_SKIP; 7906 } 7907 7908 if (stats[NL80211_STA_INFO_INACTIVE_TIME]) 7909 data->inactive_msec = 7910 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]); 7911 if (stats[NL80211_STA_INFO_RX_BYTES]) 7912 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]); 7913 if (stats[NL80211_STA_INFO_TX_BYTES]) 7914 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]); 7915 if (stats[NL80211_STA_INFO_RX_PACKETS]) 7916 data->rx_packets = 7917 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]); 7918 if (stats[NL80211_STA_INFO_TX_PACKETS]) 7919 data->tx_packets = 7920 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]); 7921 if (stats[NL80211_STA_INFO_TX_FAILED]) 7922 data->tx_retry_failed = 7923 nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]); 7924 7925 return NL_SKIP; 7926} 7927 7928static int i802_read_sta_data(struct i802_bss *bss, 7929 struct hostap_sta_driver_data *data, 7930 const u8 *addr) 7931{ 7932 struct wpa_driver_nl80211_data *drv = bss->drv; 7933 struct nl_msg *msg; 7934 7935 os_memset(data, 0, sizeof(*data)); 7936 msg = nlmsg_alloc(); 7937 if (!msg) 7938 return -ENOMEM; 7939 7940 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 7941 7942 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7943 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 7944 7945 return send_and_recv_msgs(drv, msg, get_sta_handler, data); 7946 nla_put_failure: 7947 nlmsg_free(msg); 7948 return -ENOBUFS; 7949} 7950 7951 7952#if defined(HOSTAPD) || defined(CONFIG_AP) 7953 7954static int i802_set_tx_queue_params(void *priv, int queue, int aifs, 7955 int cw_min, int cw_max, int burst_time) 7956{ 7957 struct i802_bss *bss = priv; 7958 struct wpa_driver_nl80211_data *drv = bss->drv; 7959 struct nl_msg *msg; 7960 struct nlattr *txq, *params; 7961 7962 msg = nlmsg_alloc(); 7963 if (!msg) 7964 return -1; 7965 7966 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7967 7968 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 7969 7970 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS); 7971 if (!txq) 7972 goto nla_put_failure; 7973 7974 /* We are only sending parameters for a single TXQ at a time */ 7975 params = nla_nest_start(msg, 1); 7976 if (!params) 7977 goto nla_put_failure; 7978 7979 switch (queue) { 7980 case 0: 7981 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO); 7982 break; 7983 case 1: 7984 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI); 7985 break; 7986 case 2: 7987 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE); 7988 break; 7989 case 3: 7990 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK); 7991 break; 7992 } 7993 /* Burst time is configured in units of 0.1 msec and TXOP parameter in 7994 * 32 usec, so need to convert the value here. */ 7995 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32); 7996 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min); 7997 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max); 7998 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs); 7999 8000 nla_nest_end(msg, params); 8001 8002 nla_nest_end(msg, txq); 8003 8004 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 8005 return 0; 8006 msg = NULL; 8007 nla_put_failure: 8008 nlmsg_free(msg); 8009 return -1; 8010} 8011 8012 8013static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr, 8014 const char *ifname, int vlan_id) 8015{ 8016 struct wpa_driver_nl80211_data *drv = bss->drv; 8017 struct nl_msg *msg; 8018 int ret = -ENOBUFS; 8019 8020 msg = nlmsg_alloc(); 8021 if (!msg) 8022 return -ENOMEM; 8023 8024 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 8025 8026 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 8027 if_nametoindex(bss->ifname)); 8028 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 8029 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN, 8030 if_nametoindex(ifname)); 8031 8032 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8033 msg = NULL; 8034 if (ret < 0) { 8035 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr=" 8036 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)", 8037 MAC2STR(addr), ifname, vlan_id, ret, 8038 strerror(-ret)); 8039 } 8040 nla_put_failure: 8041 nlmsg_free(msg); 8042 return ret; 8043} 8044 8045 8046static int i802_get_inact_sec(void *priv, const u8 *addr) 8047{ 8048 struct hostap_sta_driver_data data; 8049 int ret; 8050 8051 data.inactive_msec = (unsigned long) -1; 8052 ret = i802_read_sta_data(priv, &data, addr); 8053 if (ret || data.inactive_msec == (unsigned long) -1) 8054 return -1; 8055 return data.inactive_msec / 1000; 8056} 8057 8058 8059static int i802_sta_clear_stats(void *priv, const u8 *addr) 8060{ 8061#if 0 8062 /* TODO */ 8063#endif 8064 return 0; 8065} 8066 8067 8068static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, 8069 int reason) 8070{ 8071 struct i802_bss *bss = priv; 8072 struct wpa_driver_nl80211_data *drv = bss->drv; 8073 struct ieee80211_mgmt mgmt; 8074 8075 if (drv->device_ap_sme) 8076 return wpa_driver_nl80211_sta_remove(bss, addr); 8077 8078 memset(&mgmt, 0, sizeof(mgmt)); 8079 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 8080 WLAN_FC_STYPE_DEAUTH); 8081 memcpy(mgmt.da, addr, ETH_ALEN); 8082 memcpy(mgmt.sa, own_addr, ETH_ALEN); 8083 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 8084 mgmt.u.deauth.reason_code = host_to_le16(reason); 8085 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 8086 IEEE80211_HDRLEN + 8087 sizeof(mgmt.u.deauth), 0, 0, 0, 0, 8088 0); 8089} 8090 8091 8092static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr, 8093 int reason) 8094{ 8095 struct i802_bss *bss = priv; 8096 struct wpa_driver_nl80211_data *drv = bss->drv; 8097 struct ieee80211_mgmt mgmt; 8098 8099 if (drv->device_ap_sme) 8100 return wpa_driver_nl80211_sta_remove(bss, addr); 8101 8102 memset(&mgmt, 0, sizeof(mgmt)); 8103 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 8104 WLAN_FC_STYPE_DISASSOC); 8105 memcpy(mgmt.da, addr, ETH_ALEN); 8106 memcpy(mgmt.sa, own_addr, ETH_ALEN); 8107 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 8108 mgmt.u.disassoc.reason_code = host_to_le16(reason); 8109 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 8110 IEEE80211_HDRLEN + 8111 sizeof(mgmt.u.disassoc), 0, 0, 0, 0, 8112 0); 8113} 8114 8115#endif /* HOSTAPD || CONFIG_AP */ 8116 8117#ifdef HOSTAPD 8118 8119static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 8120{ 8121 int i; 8122 int *old; 8123 8124 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d", 8125 ifidx); 8126 for (i = 0; i < drv->num_if_indices; i++) { 8127 if (drv->if_indices[i] == 0) { 8128 drv->if_indices[i] = ifidx; 8129 return; 8130 } 8131 } 8132 8133 if (drv->if_indices != drv->default_if_indices) 8134 old = drv->if_indices; 8135 else 8136 old = NULL; 8137 8138 drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1, 8139 sizeof(int)); 8140 if (!drv->if_indices) { 8141 if (!old) 8142 drv->if_indices = drv->default_if_indices; 8143 else 8144 drv->if_indices = old; 8145 wpa_printf(MSG_ERROR, "Failed to reallocate memory for " 8146 "interfaces"); 8147 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx); 8148 return; 8149 } else if (!old) 8150 os_memcpy(drv->if_indices, drv->default_if_indices, 8151 sizeof(drv->default_if_indices)); 8152 drv->if_indices[drv->num_if_indices] = ifidx; 8153 drv->num_if_indices++; 8154} 8155 8156 8157static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 8158{ 8159 int i; 8160 8161 for (i = 0; i < drv->num_if_indices; i++) { 8162 if (drv->if_indices[i] == ifidx) { 8163 drv->if_indices[i] = 0; 8164 break; 8165 } 8166 } 8167} 8168 8169 8170static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 8171{ 8172 int i; 8173 8174 for (i = 0; i < drv->num_if_indices; i++) 8175 if (drv->if_indices[i] == ifidx) 8176 return 1; 8177 8178 return 0; 8179} 8180 8181 8182static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val, 8183 const char *bridge_ifname) 8184{ 8185 struct i802_bss *bss = priv; 8186 struct wpa_driver_nl80211_data *drv = bss->drv; 8187 char name[IFNAMSIZ + 1]; 8188 8189 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid); 8190 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR 8191 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name); 8192 if (val) { 8193 if (!if_nametoindex(name)) { 8194 if (nl80211_create_iface(drv, name, 8195 NL80211_IFTYPE_AP_VLAN, 8196 bss->addr, 1) < 0) 8197 return -1; 8198 if (bridge_ifname && 8199 linux_br_add_if(drv->global->ioctl_sock, 8200 bridge_ifname, name) < 0) 8201 return -1; 8202 } 8203 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) { 8204 wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA " 8205 "interface %s up", name); 8206 } 8207 return i802_set_sta_vlan(priv, addr, name, 0); 8208 } else { 8209 if (bridge_ifname) 8210 linux_br_del_if(drv->global->ioctl_sock, bridge_ifname, 8211 name); 8212 8213 i802_set_sta_vlan(priv, addr, bss->ifname, 0); 8214 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN, 8215 name); 8216 } 8217} 8218 8219 8220static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx) 8221{ 8222 struct wpa_driver_nl80211_data *drv = eloop_ctx; 8223 struct sockaddr_ll lladdr; 8224 unsigned char buf[3000]; 8225 int len; 8226 socklen_t fromlen = sizeof(lladdr); 8227 8228 len = recvfrom(sock, buf, sizeof(buf), 0, 8229 (struct sockaddr *)&lladdr, &fromlen); 8230 if (len < 0) { 8231 perror("recv"); 8232 return; 8233 } 8234 8235 if (have_ifidx(drv, lladdr.sll_ifindex)) 8236 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len); 8237} 8238 8239 8240static int i802_check_bridge(struct wpa_driver_nl80211_data *drv, 8241 struct i802_bss *bss, 8242 const char *brname, const char *ifname) 8243{ 8244 int ifindex; 8245 char in_br[IFNAMSIZ]; 8246 8247 os_strlcpy(bss->brname, brname, IFNAMSIZ); 8248 ifindex = if_nametoindex(brname); 8249 if (ifindex == 0) { 8250 /* 8251 * Bridge was configured, but the bridge device does 8252 * not exist. Try to add it now. 8253 */ 8254 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) { 8255 wpa_printf(MSG_ERROR, "nl80211: Failed to add the " 8256 "bridge interface %s: %s", 8257 brname, strerror(errno)); 8258 return -1; 8259 } 8260 bss->added_bridge = 1; 8261 add_ifidx(drv, if_nametoindex(brname)); 8262 } 8263 8264 if (linux_br_get(in_br, ifname) == 0) { 8265 if (os_strcmp(in_br, brname) == 0) 8266 return 0; /* already in the bridge */ 8267 8268 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from " 8269 "bridge %s", ifname, in_br); 8270 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) < 8271 0) { 8272 wpa_printf(MSG_ERROR, "nl80211: Failed to " 8273 "remove interface %s from bridge " 8274 "%s: %s", 8275 ifname, brname, strerror(errno)); 8276 return -1; 8277 } 8278 } 8279 8280 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s", 8281 ifname, brname); 8282 if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) { 8283 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s " 8284 "into bridge %s: %s", 8285 ifname, brname, strerror(errno)); 8286 return -1; 8287 } 8288 bss->added_if_into_bridge = 1; 8289 8290 return 0; 8291} 8292 8293 8294static void *i802_init(struct hostapd_data *hapd, 8295 struct wpa_init_params *params) 8296{ 8297 struct wpa_driver_nl80211_data *drv; 8298 struct i802_bss *bss; 8299 size_t i; 8300 char brname[IFNAMSIZ]; 8301 int ifindex, br_ifindex; 8302 int br_added = 0; 8303 8304 bss = wpa_driver_nl80211_init(hapd, params->ifname, 8305 params->global_priv); 8306 if (bss == NULL) 8307 return NULL; 8308 8309 drv = bss->drv; 8310 drv->nlmode = NL80211_IFTYPE_AP; 8311 drv->eapol_sock = -1; 8312 8313 if (linux_br_get(brname, params->ifname) == 0) { 8314 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s", 8315 params->ifname, brname); 8316 br_ifindex = if_nametoindex(brname); 8317 } else { 8318 brname[0] = '\0'; 8319 br_ifindex = 0; 8320 } 8321 8322 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int); 8323 drv->if_indices = drv->default_if_indices; 8324 for (i = 0; i < params->num_bridge; i++) { 8325 if (params->bridge[i]) { 8326 ifindex = if_nametoindex(params->bridge[i]); 8327 if (ifindex) 8328 add_ifidx(drv, ifindex); 8329 if (ifindex == br_ifindex) 8330 br_added = 1; 8331 } 8332 } 8333 if (!br_added && br_ifindex && 8334 (params->num_bridge == 0 || !params->bridge[0])) 8335 add_ifidx(drv, br_ifindex); 8336 8337 /* start listening for EAPOL on the default AP interface */ 8338 add_ifidx(drv, drv->ifindex); 8339 8340 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0)) 8341 goto failed; 8342 8343 if (params->bssid) { 8344 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8345 params->bssid)) 8346 goto failed; 8347 } 8348 8349 if (wpa_driver_nl80211_set_mode(bss, drv->nlmode)) { 8350 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s " 8351 "into AP mode", bss->ifname); 8352 goto failed; 8353 } 8354 8355 if (params->num_bridge && params->bridge[0] && 8356 i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0) 8357 goto failed; 8358 8359 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) 8360 goto failed; 8361 8362 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE)); 8363 if (drv->eapol_sock < 0) { 8364 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)"); 8365 goto failed; 8366 } 8367 8368 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL)) 8369 { 8370 printf("Could not register read socket for eapol\n"); 8371 goto failed; 8372 } 8373 8374 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8375 params->own_addr)) 8376 goto failed; 8377 8378 memcpy(bss->addr, params->own_addr, ETH_ALEN); 8379 8380 return bss; 8381 8382failed: 8383 wpa_driver_nl80211_deinit(bss); 8384 return NULL; 8385} 8386 8387 8388static void i802_deinit(void *priv) 8389{ 8390 struct i802_bss *bss = priv; 8391 wpa_driver_nl80211_deinit(bss); 8392} 8393 8394#endif /* HOSTAPD */ 8395 8396 8397static enum nl80211_iftype wpa_driver_nl80211_if_type( 8398 enum wpa_driver_if_type type) 8399{ 8400 switch (type) { 8401 case WPA_IF_STATION: 8402 return NL80211_IFTYPE_STATION; 8403 case WPA_IF_P2P_CLIENT: 8404 case WPA_IF_P2P_GROUP: 8405 return NL80211_IFTYPE_P2P_CLIENT; 8406 case WPA_IF_AP_VLAN: 8407 return NL80211_IFTYPE_AP_VLAN; 8408 case WPA_IF_AP_BSS: 8409 return NL80211_IFTYPE_AP; 8410 case WPA_IF_P2P_GO: 8411 return NL80211_IFTYPE_P2P_GO; 8412 } 8413 return -1; 8414} 8415 8416 8417#ifdef CONFIG_P2P 8418 8419static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr) 8420{ 8421 struct wpa_driver_nl80211_data *drv; 8422 dl_list_for_each(drv, &global->interfaces, 8423 struct wpa_driver_nl80211_data, list) { 8424 if (os_memcmp(addr, drv->first_bss.addr, ETH_ALEN) == 0) 8425 return 1; 8426 } 8427 return 0; 8428} 8429 8430 8431static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv, 8432 u8 *new_addr) 8433{ 8434 unsigned int idx; 8435 8436 if (!drv->global) 8437 return -1; 8438 8439 os_memcpy(new_addr, drv->first_bss.addr, ETH_ALEN); 8440 for (idx = 0; idx < 64; idx++) { 8441 new_addr[0] = drv->first_bss.addr[0] | 0x02; 8442 new_addr[0] ^= idx << 2; 8443 if (!nl80211_addr_in_use(drv->global, new_addr)) 8444 break; 8445 } 8446 if (idx == 64) 8447 return -1; 8448 8449 wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address " 8450 MACSTR, MAC2STR(new_addr)); 8451 8452 return 0; 8453} 8454 8455#endif /* CONFIG_P2P */ 8456 8457 8458static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type, 8459 const char *ifname, const u8 *addr, 8460 void *bss_ctx, void **drv_priv, 8461 char *force_ifname, u8 *if_addr, 8462 const char *bridge) 8463{ 8464 struct i802_bss *bss = priv; 8465 struct wpa_driver_nl80211_data *drv = bss->drv; 8466 int ifidx; 8467#ifdef HOSTAPD 8468 struct i802_bss *new_bss = NULL; 8469 8470 if (type == WPA_IF_AP_BSS) { 8471 new_bss = os_zalloc(sizeof(*new_bss)); 8472 if (new_bss == NULL) 8473 return -1; 8474 } 8475#endif /* HOSTAPD */ 8476 8477 if (addr) 8478 os_memcpy(if_addr, addr, ETH_ALEN); 8479 ifidx = nl80211_create_iface(drv, ifname, 8480 wpa_driver_nl80211_if_type(type), addr, 8481 0); 8482 if (ifidx < 0) { 8483#ifdef HOSTAPD 8484 os_free(new_bss); 8485#endif /* HOSTAPD */ 8486 return -1; 8487 } 8488 8489 if (!addr && 8490 linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8491 if_addr) < 0) { 8492 nl80211_remove_iface(drv, ifidx); 8493 return -1; 8494 } 8495 8496#ifdef CONFIG_P2P 8497 if (!addr && 8498 (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP || 8499 type == WPA_IF_P2P_GO)) { 8500 /* Enforce unique P2P Interface Address */ 8501 u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN]; 8502 8503 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8504 own_addr) < 0 || 8505 linux_get_ifhwaddr(drv->global->ioctl_sock, ifname, 8506 new_addr) < 0) { 8507 nl80211_remove_iface(drv, ifidx); 8508 return -1; 8509 } 8510 if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) { 8511 wpa_printf(MSG_DEBUG, "nl80211: Allocate new address " 8512 "for P2P group interface"); 8513 if (nl80211_p2p_interface_addr(drv, new_addr) < 0) { 8514 nl80211_remove_iface(drv, ifidx); 8515 return -1; 8516 } 8517 if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, 8518 new_addr) < 0) { 8519 nl80211_remove_iface(drv, ifidx); 8520 return -1; 8521 } 8522 } 8523 os_memcpy(if_addr, new_addr, ETH_ALEN); 8524 } 8525#endif /* CONFIG_P2P */ 8526 8527#ifdef HOSTAPD 8528 if (bridge && 8529 i802_check_bridge(drv, new_bss, bridge, ifname) < 0) { 8530 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new " 8531 "interface %s to a bridge %s", ifname, bridge); 8532 nl80211_remove_iface(drv, ifidx); 8533 os_free(new_bss); 8534 return -1; 8535 } 8536 8537 if (type == WPA_IF_AP_BSS) { 8538 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1)) 8539 { 8540 nl80211_remove_iface(drv, ifidx); 8541 os_free(new_bss); 8542 return -1; 8543 } 8544 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ); 8545 os_memcpy(new_bss->addr, if_addr, ETH_ALEN); 8546 new_bss->ifindex = ifidx; 8547 new_bss->drv = drv; 8548 new_bss->next = drv->first_bss.next; 8549 new_bss->freq = drv->first_bss.freq; 8550 new_bss->ctx = bss_ctx; 8551 drv->first_bss.next = new_bss; 8552 if (drv_priv) 8553 *drv_priv = new_bss; 8554 nl80211_init_bss(new_bss); 8555 8556 /* Subscribe management frames for this WPA_IF_AP_BSS */ 8557 if (nl80211_setup_ap(new_bss)) 8558 return -1; 8559 } 8560#endif /* HOSTAPD */ 8561 8562 if (drv->global) 8563 drv->global->if_add_ifindex = ifidx; 8564 8565 return 0; 8566} 8567 8568 8569static int wpa_driver_nl80211_if_remove(struct i802_bss *bss, 8570 enum wpa_driver_if_type type, 8571 const char *ifname) 8572{ 8573 struct wpa_driver_nl80211_data *drv = bss->drv; 8574 int ifindex = if_nametoindex(ifname); 8575 8576 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d", 8577 __func__, type, ifname, ifindex); 8578 if (ifindex <= 0) 8579 return -1; 8580 8581 nl80211_remove_iface(drv, ifindex); 8582 8583#ifdef HOSTAPD 8584 if (type != WPA_IF_AP_BSS) 8585 return 0; 8586 8587 if (bss->added_if_into_bridge) { 8588 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 8589 bss->ifname) < 0) 8590 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 8591 "interface %s from bridge %s: %s", 8592 bss->ifname, bss->brname, strerror(errno)); 8593 } 8594 if (bss->added_bridge) { 8595 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 8596 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 8597 "bridge %s: %s", 8598 bss->brname, strerror(errno)); 8599 } 8600 8601 if (bss != &drv->first_bss) { 8602 struct i802_bss *tbss; 8603 8604 for (tbss = &drv->first_bss; tbss; tbss = tbss->next) { 8605 if (tbss->next == bss) { 8606 tbss->next = bss->next; 8607 /* Unsubscribe management frames */ 8608 nl80211_teardown_ap(bss); 8609 nl80211_destroy_bss(bss); 8610 os_free(bss); 8611 bss = NULL; 8612 break; 8613 } 8614 } 8615 if (bss) 8616 wpa_printf(MSG_INFO, "nl80211: %s - could not find " 8617 "BSS %p in the list", __func__, bss); 8618 } 8619#endif /* HOSTAPD */ 8620 8621 return 0; 8622} 8623 8624 8625static int cookie_handler(struct nl_msg *msg, void *arg) 8626{ 8627 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 8628 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 8629 u64 *cookie = arg; 8630 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 8631 genlmsg_attrlen(gnlh, 0), NULL); 8632 if (tb[NL80211_ATTR_COOKIE]) 8633 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 8634 return NL_SKIP; 8635} 8636 8637 8638static int nl80211_send_frame_cmd(struct i802_bss *bss, 8639 unsigned int freq, unsigned int wait, 8640 const u8 *buf, size_t buf_len, 8641 u64 *cookie_out, int no_cck, int no_ack, 8642 int offchanok) 8643{ 8644 struct wpa_driver_nl80211_data *drv = bss->drv; 8645 struct nl_msg *msg; 8646 u64 cookie; 8647 int ret = -1; 8648 8649 msg = nlmsg_alloc(); 8650 if (!msg) 8651 return -1; 8652 8653 wpa_printf(MSG_DEBUG, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d " 8654 "no_ack=%d offchanok=%d", 8655 freq, wait, no_cck, no_ack, offchanok); 8656 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME); 8657 8658 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8659 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 8660 if (wait) 8661 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait); 8662 if (offchanok && (drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX)) 8663 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK); 8664 if (no_cck) 8665 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 8666 if (no_ack) 8667 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK); 8668 8669 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf); 8670 8671 cookie = 0; 8672 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 8673 msg = NULL; 8674 if (ret) { 8675 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d " 8676 "(%s) (freq=%u wait=%u)", ret, strerror(-ret), 8677 freq, wait); 8678 goto nla_put_failure; 8679 } 8680 wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted%s; " 8681 "cookie 0x%llx", no_ack ? " (no ACK)" : "", 8682 (long long unsigned int) cookie); 8683 8684 if (cookie_out) 8685 *cookie_out = no_ack ? (u64) -1 : cookie; 8686 8687nla_put_failure: 8688 nlmsg_free(msg); 8689 return ret; 8690} 8691 8692 8693static int wpa_driver_nl80211_send_action(struct i802_bss *bss, 8694 unsigned int freq, 8695 unsigned int wait_time, 8696 const u8 *dst, const u8 *src, 8697 const u8 *bssid, 8698 const u8 *data, size_t data_len, 8699 int no_cck) 8700{ 8701 struct wpa_driver_nl80211_data *drv = bss->drv; 8702 int ret = -1; 8703 u8 *buf; 8704 struct ieee80211_hdr *hdr; 8705 8706 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, " 8707 "freq=%u MHz wait=%d ms no_cck=%d)", 8708 drv->ifindex, freq, wait_time, no_cck); 8709 8710 buf = os_zalloc(24 + data_len); 8711 if (buf == NULL) 8712 return ret; 8713 os_memcpy(buf + 24, data, data_len); 8714 hdr = (struct ieee80211_hdr *) buf; 8715 hdr->frame_control = 8716 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION); 8717 os_memcpy(hdr->addr1, dst, ETH_ALEN); 8718 os_memcpy(hdr->addr2, src, ETH_ALEN); 8719 os_memcpy(hdr->addr3, bssid, ETH_ALEN); 8720 8721 if (is_ap_interface(drv->nlmode)) 8722 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len, 8723 0, freq, no_cck, 1, 8724 wait_time); 8725 else 8726 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf, 8727 24 + data_len, 8728 &drv->send_action_cookie, 8729 no_cck, 0, 1); 8730 8731 os_free(buf); 8732 return ret; 8733} 8734 8735 8736static void wpa_driver_nl80211_send_action_cancel_wait(void *priv) 8737{ 8738 struct i802_bss *bss = priv; 8739 struct wpa_driver_nl80211_data *drv = bss->drv; 8740 struct nl_msg *msg; 8741 int ret; 8742 8743 msg = nlmsg_alloc(); 8744 if (!msg) 8745 return; 8746 8747 wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx", 8748 (long long unsigned int) drv->send_action_cookie); 8749 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL); 8750 8751 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8752 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie); 8753 8754 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8755 msg = NULL; 8756 if (ret) 8757 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d " 8758 "(%s)", ret, strerror(-ret)); 8759 8760 nla_put_failure: 8761 nlmsg_free(msg); 8762} 8763 8764 8765static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq, 8766 unsigned int duration) 8767{ 8768 struct i802_bss *bss = priv; 8769 struct wpa_driver_nl80211_data *drv = bss->drv; 8770 struct nl_msg *msg; 8771 int ret; 8772 u64 cookie; 8773 8774 msg = nlmsg_alloc(); 8775 if (!msg) 8776 return -1; 8777 8778 nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL); 8779 8780 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8781 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 8782 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration); 8783 8784 cookie = 0; 8785 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 8786 msg = NULL; 8787 if (ret == 0) { 8788 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie " 8789 "0x%llx for freq=%u MHz duration=%u", 8790 (long long unsigned int) cookie, freq, duration); 8791 drv->remain_on_chan_cookie = cookie; 8792 drv->pending_remain_on_chan = 1; 8793 return 0; 8794 } 8795 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel " 8796 "(freq=%d duration=%u): %d (%s)", 8797 freq, duration, ret, strerror(-ret)); 8798nla_put_failure: 8799 nlmsg_free(msg); 8800 return -1; 8801} 8802 8803 8804static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv) 8805{ 8806 struct i802_bss *bss = priv; 8807 struct wpa_driver_nl80211_data *drv = bss->drv; 8808 struct nl_msg *msg; 8809 int ret; 8810 8811 if (!drv->pending_remain_on_chan) { 8812 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel " 8813 "to cancel"); 8814 return -1; 8815 } 8816 8817 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie " 8818 "0x%llx", 8819 (long long unsigned int) drv->remain_on_chan_cookie); 8820 8821 msg = nlmsg_alloc(); 8822 if (!msg) 8823 return -1; 8824 8825 nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL); 8826 8827 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8828 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie); 8829 8830 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8831 msg = NULL; 8832 if (ret == 0) 8833 return 0; 8834 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: " 8835 "%d (%s)", ret, strerror(-ret)); 8836nla_put_failure: 8837 nlmsg_free(msg); 8838 return -1; 8839} 8840 8841 8842static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report) 8843{ 8844 struct wpa_driver_nl80211_data *drv = bss->drv; 8845 8846 if (!report) { 8847 if (bss->nl_preq && drv->device_ap_sme && 8848 is_ap_interface(drv->nlmode)) { 8849 /* 8850 * Do not disable Probe Request reporting that was 8851 * enabled in nl80211_setup_ap(). 8852 */ 8853 wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of " 8854 "Probe Request reporting nl_preq=%p while " 8855 "in AP mode", bss->nl_preq); 8856 } else if (bss->nl_preq) { 8857 wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request " 8858 "reporting nl_preq=%p", bss->nl_preq); 8859 eloop_unregister_read_sock( 8860 nl_socket_get_fd(bss->nl_preq)); 8861 nl_destroy_handles(&bss->nl_preq); 8862 } 8863 return 0; 8864 } 8865 8866 if (bss->nl_preq) { 8867 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting " 8868 "already on! nl_preq=%p", bss->nl_preq); 8869 return 0; 8870 } 8871 8872 bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq"); 8873 if (bss->nl_preq == NULL) 8874 return -1; 8875 wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request " 8876 "reporting nl_preq=%p", bss->nl_preq); 8877 8878 if (nl80211_register_frame(bss, bss->nl_preq, 8879 (WLAN_FC_TYPE_MGMT << 2) | 8880 (WLAN_FC_STYPE_PROBE_REQ << 4), 8881 NULL, 0) < 0) 8882 goto out_err; 8883 8884 eloop_register_read_sock(nl_socket_get_fd(bss->nl_preq), 8885 wpa_driver_nl80211_event_receive, bss->nl_cb, 8886 bss->nl_preq); 8887 8888 return 0; 8889 8890 out_err: 8891 nl_destroy_handles(&bss->nl_preq); 8892 return -1; 8893} 8894 8895 8896static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 8897 int ifindex, int disabled) 8898{ 8899 struct nl_msg *msg; 8900 struct nlattr *bands, *band; 8901 int ret; 8902 8903 msg = nlmsg_alloc(); 8904 if (!msg) 8905 return -1; 8906 8907 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK); 8908 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 8909 8910 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES); 8911 if (!bands) 8912 goto nla_put_failure; 8913 8914 /* 8915 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything 8916 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS 8917 * rates. All 5 GHz rates are left enabled. 8918 */ 8919 band = nla_nest_start(msg, NL80211_BAND_2GHZ); 8920 if (!band) 8921 goto nla_put_failure; 8922 if (disabled) { 8923 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8, 8924 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 8925 } 8926 nla_nest_end(msg, band); 8927 8928 nla_nest_end(msg, bands); 8929 8930 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8931 msg = NULL; 8932 if (ret) { 8933 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d " 8934 "(%s)", ret, strerror(-ret)); 8935 } else 8936 drv->disabled_11b_rates = disabled; 8937 8938 return ret; 8939 8940nla_put_failure: 8941 nlmsg_free(msg); 8942 return -1; 8943} 8944 8945 8946static int wpa_driver_nl80211_deinit_ap(void *priv) 8947{ 8948 struct i802_bss *bss = priv; 8949 struct wpa_driver_nl80211_data *drv = bss->drv; 8950 if (!is_ap_interface(drv->nlmode)) 8951 return -1; 8952 wpa_driver_nl80211_del_beacon(drv); 8953 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 8954} 8955 8956 8957static int wpa_driver_nl80211_deinit_p2p_cli(void *priv) 8958{ 8959 struct i802_bss *bss = priv; 8960 struct wpa_driver_nl80211_data *drv = bss->drv; 8961 if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT) 8962 return -1; 8963 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 8964} 8965 8966 8967static void wpa_driver_nl80211_resume(void *priv) 8968{ 8969 struct i802_bss *bss = priv; 8970 struct wpa_driver_nl80211_data *drv = bss->drv; 8971 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { 8972 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on " 8973 "resume event"); 8974 } 8975} 8976 8977 8978static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap, 8979 const u8 *ies, size_t ies_len) 8980{ 8981 struct i802_bss *bss = priv; 8982 struct wpa_driver_nl80211_data *drv = bss->drv; 8983 int ret; 8984 u8 *data, *pos; 8985 size_t data_len; 8986 const u8 *own_addr = bss->addr; 8987 8988 if (action != 1) { 8989 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action " 8990 "action %d", action); 8991 return -1; 8992 } 8993 8994 /* 8995 * Action frame payload: 8996 * Category[1] = 6 (Fast BSS Transition) 8997 * Action[1] = 1 (Fast BSS Transition Request) 8998 * STA Address 8999 * Target AP Address 9000 * FT IEs 9001 */ 9002 9003 data_len = 2 + 2 * ETH_ALEN + ies_len; 9004 data = os_malloc(data_len); 9005 if (data == NULL) 9006 return -1; 9007 pos = data; 9008 *pos++ = 0x06; /* FT Action category */ 9009 *pos++ = action; 9010 os_memcpy(pos, own_addr, ETH_ALEN); 9011 pos += ETH_ALEN; 9012 os_memcpy(pos, target_ap, ETH_ALEN); 9013 pos += ETH_ALEN; 9014 os_memcpy(pos, ies, ies_len); 9015 9016 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0, 9017 drv->bssid, own_addr, drv->bssid, 9018 data, data_len, 0); 9019 os_free(data); 9020 9021 return ret; 9022} 9023 9024 9025static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis) 9026{ 9027 struct i802_bss *bss = priv; 9028 struct wpa_driver_nl80211_data *drv = bss->drv; 9029 struct nl_msg *msg; 9030 struct nlattr *cqm; 9031 int ret = -1; 9032 9033 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d " 9034 "hysteresis=%d", threshold, hysteresis); 9035 9036 msg = nlmsg_alloc(); 9037 if (!msg) 9038 return -1; 9039 9040 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM); 9041 9042 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9043 9044 cqm = nla_nest_start(msg, NL80211_ATTR_CQM); 9045 if (cqm == NULL) 9046 goto nla_put_failure; 9047 9048 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold); 9049 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis); 9050 nla_nest_end(msg, cqm); 9051 9052 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 9053 msg = NULL; 9054 9055nla_put_failure: 9056 nlmsg_free(msg); 9057 return ret; 9058} 9059 9060 9061static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si) 9062{ 9063 struct i802_bss *bss = priv; 9064 struct wpa_driver_nl80211_data *drv = bss->drv; 9065 int res; 9066 9067 os_memset(si, 0, sizeof(*si)); 9068 res = nl80211_get_link_signal(drv, si); 9069 if (res != 0) 9070 return res; 9071 9072 return nl80211_get_link_noise(drv, si); 9073} 9074 9075 9076static int wpa_driver_nl80211_shared_freq(void *priv) 9077{ 9078 struct i802_bss *bss = priv; 9079 struct wpa_driver_nl80211_data *drv = bss->drv; 9080 struct wpa_driver_nl80211_data *driver; 9081 int freq = 0; 9082 9083 /* 9084 * If the same PHY is in connected state with some other interface, 9085 * then retrieve the assoc freq. 9086 */ 9087 wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s", 9088 drv->phyname); 9089 9090 dl_list_for_each(driver, &drv->global->interfaces, 9091 struct wpa_driver_nl80211_data, list) { 9092 if (drv == driver || 9093 os_strcmp(drv->phyname, driver->phyname) != 0 || 9094#ifdef ANDROID_P2P 9095 (!driver->associated && !is_ap_interface(driver->nlmode))) 9096#else 9097 !driver->associated) 9098#endif 9099 continue; 9100 9101 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s " 9102 MACSTR, 9103 driver->phyname, driver->first_bss.ifname, 9104 MAC2STR(driver->first_bss.addr)); 9105 if (is_ap_interface(driver->nlmode)) 9106 freq = driver->first_bss.freq; 9107 else 9108 freq = nl80211_get_assoc_freq(driver); 9109 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d", 9110 drv->phyname, freq); 9111 } 9112 9113 if (!freq) 9114 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for " 9115 "PHY (%s) in associated state", drv->phyname); 9116 9117 return freq; 9118} 9119 9120 9121static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len, 9122 int encrypt) 9123{ 9124 struct i802_bss *bss = priv; 9125 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0, 9126 0, 0, 0, 0); 9127} 9128 9129 9130static int nl80211_set_param(void *priv, const char *param) 9131{ 9132 wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param); 9133 if (param == NULL) 9134 return 0; 9135 9136#ifdef CONFIG_P2P 9137 if (os_strstr(param, "use_p2p_group_interface=1")) { 9138 struct i802_bss *bss = priv; 9139 struct wpa_driver_nl80211_data *drv = bss->drv; 9140 9141 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 9142 "interface"); 9143 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 9144 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 9145 } 9146#ifdef ANDROID_P2P 9147 if(os_strstr(param, "use_multi_chan_concurrent=1")) { 9148 struct i802_bss *bss = priv; 9149 struct wpa_driver_nl80211_data *drv = bss->drv; 9150 wpa_printf(MSG_DEBUG, "nl80211: Use Multi channel " 9151 "concurrency"); 9152 drv->capa.flags |= WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT; 9153 } 9154#endif 9155#endif /* CONFIG_P2P */ 9156 9157 return 0; 9158} 9159 9160 9161static void * nl80211_global_init(void) 9162{ 9163 struct nl80211_global *global; 9164 struct netlink_config *cfg; 9165 9166 global = os_zalloc(sizeof(*global)); 9167 if (global == NULL) 9168 return NULL; 9169 global->ioctl_sock = -1; 9170 dl_list_init(&global->interfaces); 9171 global->if_add_ifindex = -1; 9172 9173 cfg = os_zalloc(sizeof(*cfg)); 9174 if (cfg == NULL) 9175 goto err; 9176 9177 cfg->ctx = global; 9178 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink; 9179 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink; 9180 global->netlink = netlink_init(cfg); 9181 if (global->netlink == NULL) { 9182 os_free(cfg); 9183 goto err; 9184 } 9185 9186 if (wpa_driver_nl80211_init_nl_global(global) < 0) 9187 goto err; 9188 9189 global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0); 9190 if (global->ioctl_sock < 0) { 9191 perror("socket(PF_INET,SOCK_DGRAM)"); 9192 goto err; 9193 } 9194 9195 return global; 9196 9197err: 9198 nl80211_global_deinit(global); 9199 return NULL; 9200} 9201 9202 9203static void nl80211_global_deinit(void *priv) 9204{ 9205 struct nl80211_global *global = priv; 9206 if (global == NULL) 9207 return; 9208 if (!dl_list_empty(&global->interfaces)) { 9209 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at " 9210 "nl80211_global_deinit", 9211 dl_list_len(&global->interfaces)); 9212 } 9213 9214 if (global->netlink) 9215 netlink_deinit(global->netlink); 9216 9217 nl_destroy_handles(&global->nl); 9218 9219 if (global->nl_event) { 9220 eloop_unregister_read_sock( 9221 nl_socket_get_fd(global->nl_event)); 9222 nl_destroy_handles(&global->nl_event); 9223 } 9224 9225 nl_cb_put(global->nl_cb); 9226 9227 if (global->ioctl_sock >= 0) 9228 close(global->ioctl_sock); 9229 9230 os_free(global); 9231} 9232 9233 9234static const char * nl80211_get_radio_name(void *priv) 9235{ 9236 struct i802_bss *bss = priv; 9237 struct wpa_driver_nl80211_data *drv = bss->drv; 9238 return drv->phyname; 9239} 9240 9241 9242static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid, 9243 const u8 *pmkid) 9244{ 9245 struct nl_msg *msg; 9246 9247 msg = nlmsg_alloc(); 9248 if (!msg) 9249 return -ENOMEM; 9250 9251 nl80211_cmd(bss->drv, msg, 0, cmd); 9252 9253 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 9254 if (pmkid) 9255 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid); 9256 if (bssid) 9257 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); 9258 9259 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 9260 nla_put_failure: 9261 nlmsg_free(msg); 9262 return -ENOBUFS; 9263} 9264 9265 9266static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 9267{ 9268 struct i802_bss *bss = priv; 9269 wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid)); 9270 return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid); 9271} 9272 9273 9274static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 9275{ 9276 struct i802_bss *bss = priv; 9277 wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR, 9278 MAC2STR(bssid)); 9279 return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid); 9280} 9281 9282 9283static int nl80211_flush_pmkid(void *priv) 9284{ 9285 struct i802_bss *bss = priv; 9286 wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs"); 9287 return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL); 9288} 9289 9290 9291static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck, 9292 const u8 *replay_ctr) 9293{ 9294 struct i802_bss *bss = priv; 9295 struct wpa_driver_nl80211_data *drv = bss->drv; 9296 struct nlattr *replay_nested; 9297 struct nl_msg *msg; 9298 9299 msg = nlmsg_alloc(); 9300 if (!msg) 9301 return; 9302 9303 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 9304 9305 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9306 9307 replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 9308 if (!replay_nested) 9309 goto nla_put_failure; 9310 9311 NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek); 9312 NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck); 9313 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN, 9314 replay_ctr); 9315 9316 nla_nest_end(msg, replay_nested); 9317 9318 send_and_recv_msgs(drv, msg, NULL, NULL); 9319 return; 9320 nla_put_failure: 9321 nlmsg_free(msg); 9322} 9323 9324 9325static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr, 9326 const u8 *addr, int qos) 9327{ 9328 /* send data frame to poll STA and check whether 9329 * this frame is ACKed */ 9330 struct { 9331 struct ieee80211_hdr hdr; 9332 u16 qos_ctl; 9333 } STRUCT_PACKED nulldata; 9334 size_t size; 9335 9336 /* Send data frame to poll STA and check whether this frame is ACKed */ 9337 9338 os_memset(&nulldata, 0, sizeof(nulldata)); 9339 9340 if (qos) { 9341 nulldata.hdr.frame_control = 9342 IEEE80211_FC(WLAN_FC_TYPE_DATA, 9343 WLAN_FC_STYPE_QOS_NULL); 9344 size = sizeof(nulldata); 9345 } else { 9346 nulldata.hdr.frame_control = 9347 IEEE80211_FC(WLAN_FC_TYPE_DATA, 9348 WLAN_FC_STYPE_NULLFUNC); 9349 size = sizeof(struct ieee80211_hdr); 9350 } 9351 9352 nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS); 9353 os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN); 9354 os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 9355 os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 9356 9357 if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0, 9358 0, 0) < 0) 9359 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to " 9360 "send poll frame"); 9361} 9362 9363static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr, 9364 int qos) 9365{ 9366 struct i802_bss *bss = priv; 9367 struct wpa_driver_nl80211_data *drv = bss->drv; 9368 struct nl_msg *msg; 9369 9370 if (!drv->poll_command_supported) { 9371 nl80211_send_null_frame(bss, own_addr, addr, qos); 9372 return; 9373 } 9374 9375 msg = nlmsg_alloc(); 9376 if (!msg) 9377 return; 9378 9379 nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT); 9380 9381 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9382 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 9383 9384 send_and_recv_msgs(drv, msg, NULL, NULL); 9385 return; 9386 nla_put_failure: 9387 nlmsg_free(msg); 9388} 9389 9390 9391static int nl80211_set_power_save(struct i802_bss *bss, int enabled) 9392{ 9393 struct nl_msg *msg; 9394 9395 msg = nlmsg_alloc(); 9396 if (!msg) 9397 return -ENOMEM; 9398 9399 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE); 9400 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9401 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, 9402 enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED); 9403 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 9404nla_put_failure: 9405 nlmsg_free(msg); 9406 return -ENOBUFS; 9407} 9408 9409 9410static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps, 9411 int ctwindow) 9412{ 9413 struct i802_bss *bss = priv; 9414 9415 wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d " 9416 "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow); 9417 9418 if (opp_ps != -1 || ctwindow != -1) 9419#ifdef ANDROID_P2P 9420 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow); 9421#else 9422 return -1; /* Not yet supported */ 9423#endif 9424 9425 if (legacy_ps == -1) 9426 return 0; 9427 if (legacy_ps != 0 && legacy_ps != 1) 9428 return -1; /* Not yet supported */ 9429 9430 return nl80211_set_power_save(bss, legacy_ps); 9431} 9432 9433 9434#ifdef CONFIG_TDLS 9435 9436static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code, 9437 u8 dialog_token, u16 status_code, 9438 const u8 *buf, size_t len) 9439{ 9440 struct i802_bss *bss = priv; 9441 struct wpa_driver_nl80211_data *drv = bss->drv; 9442 struct nl_msg *msg; 9443 9444 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 9445 return -EOPNOTSUPP; 9446 9447 if (!dst) 9448 return -EINVAL; 9449 9450 msg = nlmsg_alloc(); 9451 if (!msg) 9452 return -ENOMEM; 9453 9454 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT); 9455 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 9456 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst); 9457 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code); 9458 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token); 9459 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code); 9460 NLA_PUT(msg, NL80211_ATTR_IE, len, buf); 9461 9462 return send_and_recv_msgs(drv, msg, NULL, NULL); 9463 9464nla_put_failure: 9465 nlmsg_free(msg); 9466 return -ENOBUFS; 9467} 9468 9469 9470static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer) 9471{ 9472 struct i802_bss *bss = priv; 9473 struct wpa_driver_nl80211_data *drv = bss->drv; 9474 struct nl_msg *msg; 9475 enum nl80211_tdls_operation nl80211_oper; 9476 9477 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 9478 return -EOPNOTSUPP; 9479 9480 switch (oper) { 9481 case TDLS_DISCOVERY_REQ: 9482 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ; 9483 break; 9484 case TDLS_SETUP: 9485 nl80211_oper = NL80211_TDLS_SETUP; 9486 break; 9487 case TDLS_TEARDOWN: 9488 nl80211_oper = NL80211_TDLS_TEARDOWN; 9489 break; 9490 case TDLS_ENABLE_LINK: 9491 nl80211_oper = NL80211_TDLS_ENABLE_LINK; 9492 break; 9493 case TDLS_DISABLE_LINK: 9494 nl80211_oper = NL80211_TDLS_DISABLE_LINK; 9495 break; 9496 case TDLS_ENABLE: 9497 return 0; 9498 case TDLS_DISABLE: 9499 return 0; 9500 default: 9501 return -EINVAL; 9502 } 9503 9504 msg = nlmsg_alloc(); 9505 if (!msg) 9506 return -ENOMEM; 9507 9508 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER); 9509 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper); 9510 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 9511 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer); 9512 9513 return send_and_recv_msgs(drv, msg, NULL, NULL); 9514 9515nla_put_failure: 9516 nlmsg_free(msg); 9517 return -ENOBUFS; 9518} 9519 9520#endif /* CONFIG TDLS */ 9521 9522 9523#ifdef ANDROID 9524 9525typedef struct android_wifi_priv_cmd { 9526 char *buf; 9527 int used_len; 9528 int total_len; 9529} android_wifi_priv_cmd; 9530 9531static int drv_errors = 0; 9532 9533static void wpa_driver_send_hang_msg(struct wpa_driver_nl80211_data *drv) 9534{ 9535 drv_errors++; 9536 if (drv_errors > DRV_NUMBER_SEQUENTIAL_ERRORS) { 9537 drv_errors = 0; 9538 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED"); 9539 } 9540} 9541 9542 9543static int android_priv_cmd(struct i802_bss *bss, const char *cmd) 9544{ 9545 struct wpa_driver_nl80211_data *drv = bss->drv; 9546 struct ifreq ifr; 9547 android_wifi_priv_cmd priv_cmd; 9548 char buf[MAX_DRV_CMD_SIZE]; 9549 int ret; 9550 9551 os_memset(&ifr, 0, sizeof(ifr)); 9552 os_memset(&priv_cmd, 0, sizeof(priv_cmd)); 9553 os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 9554 9555 os_memset(buf, 0, sizeof(buf)); 9556 os_strlcpy(buf, cmd, sizeof(buf)); 9557 9558 priv_cmd.buf = buf; 9559 priv_cmd.used_len = sizeof(buf); 9560 priv_cmd.total_len = sizeof(buf); 9561 ifr.ifr_data = &priv_cmd; 9562 9563 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 9564 if (ret < 0) { 9565 wpa_printf(MSG_ERROR, "%s: failed to issue private commands", 9566 __func__); 9567 wpa_driver_send_hang_msg(drv); 9568 return ret; 9569 } 9570 9571 drv_errors = 0; 9572 return 0; 9573} 9574 9575 9576static int android_pno_start(struct i802_bss *bss, 9577 struct wpa_driver_scan_params *params) 9578{ 9579 struct wpa_driver_nl80211_data *drv = bss->drv; 9580 struct ifreq ifr; 9581 android_wifi_priv_cmd priv_cmd; 9582 int ret = 0, i = 0, bp; 9583 char buf[WEXT_PNO_MAX_COMMAND_SIZE]; 9584 9585 bp = WEXT_PNOSETUP_HEADER_SIZE; 9586 os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp); 9587 buf[bp++] = WEXT_PNO_TLV_PREFIX; 9588 buf[bp++] = WEXT_PNO_TLV_VERSION; 9589 buf[bp++] = WEXT_PNO_TLV_SUBVERSION; 9590 buf[bp++] = WEXT_PNO_TLV_RESERVED; 9591 9592 while (i < WEXT_PNO_AMOUNT && (size_t) i < params->num_ssids) { 9593 /* Check that there is enough space needed for 1 more SSID, the 9594 * other sections and null termination */ 9595 if ((bp + WEXT_PNO_SSID_HEADER_SIZE + MAX_SSID_LEN + 9596 WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int) sizeof(buf)) 9597 break; 9598 wpa_hexdump_ascii(MSG_DEBUG, "For PNO Scan", 9599 params->ssids[i].ssid, 9600 params->ssids[i].ssid_len); 9601 buf[bp++] = WEXT_PNO_SSID_SECTION; 9602 buf[bp++] = params->ssids[i].ssid_len; 9603 os_memcpy(&buf[bp], params->ssids[i].ssid, 9604 params->ssids[i].ssid_len); 9605 bp += params->ssids[i].ssid_len; 9606 i++; 9607 } 9608 9609 buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION; 9610 os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x", 9611 WEXT_PNO_SCAN_INTERVAL); 9612 bp += WEXT_PNO_SCAN_INTERVAL_LENGTH; 9613 9614 buf[bp++] = WEXT_PNO_REPEAT_SECTION; 9615 os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x", 9616 WEXT_PNO_REPEAT); 9617 bp += WEXT_PNO_REPEAT_LENGTH; 9618 9619 buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION; 9620 os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x", 9621 WEXT_PNO_MAX_REPEAT); 9622 bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1; 9623 9624 memset(&ifr, 0, sizeof(ifr)); 9625 memset(&priv_cmd, 0, sizeof(priv_cmd)); 9626 os_strncpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 9627 9628 priv_cmd.buf = buf; 9629 priv_cmd.used_len = bp; 9630 priv_cmd.total_len = bp; 9631 ifr.ifr_data = &priv_cmd; 9632 9633 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 9634 9635 if (ret < 0) { 9636 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d", 9637 ret); 9638 wpa_driver_send_hang_msg(drv); 9639 return ret; 9640 } 9641 9642 drv_errors = 0; 9643 9644 return android_priv_cmd(bss, "PNOFORCE 1"); 9645} 9646 9647 9648static int android_pno_stop(struct i802_bss *bss) 9649{ 9650 return android_priv_cmd(bss, "PNOFORCE 0"); 9651} 9652 9653#endif /* ANDROID */ 9654 9655 9656static int driver_nl80211_set_key(const char *ifname, void *priv, 9657 enum wpa_alg alg, const u8 *addr, 9658 int key_idx, int set_tx, 9659 const u8 *seq, size_t seq_len, 9660 const u8 *key, size_t key_len) 9661{ 9662 struct i802_bss *bss = priv; 9663 return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx, 9664 set_tx, seq, seq_len, key, key_len); 9665} 9666 9667 9668static int driver_nl80211_scan2(void *priv, 9669 struct wpa_driver_scan_params *params) 9670{ 9671 struct i802_bss *bss = priv; 9672 return wpa_driver_nl80211_scan(bss, params); 9673} 9674 9675 9676static int driver_nl80211_deauthenticate(void *priv, const u8 *addr, 9677 int reason_code) 9678{ 9679 struct i802_bss *bss = priv; 9680 return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code); 9681} 9682 9683 9684static int driver_nl80211_authenticate(void *priv, 9685 struct wpa_driver_auth_params *params) 9686{ 9687 struct i802_bss *bss = priv; 9688 return wpa_driver_nl80211_authenticate(bss, params); 9689} 9690 9691 9692static void driver_nl80211_deinit(void *priv) 9693{ 9694 struct i802_bss *bss = priv; 9695 wpa_driver_nl80211_deinit(bss); 9696} 9697 9698 9699static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type, 9700 const char *ifname) 9701{ 9702 struct i802_bss *bss = priv; 9703 return wpa_driver_nl80211_if_remove(bss, type, ifname); 9704} 9705 9706 9707static int driver_nl80211_send_mlme(void *priv, const u8 *data, 9708 size_t data_len, int noack) 9709{ 9710 struct i802_bss *bss = priv; 9711 return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack, 9712 0, 0, 0, 0); 9713} 9714 9715 9716static int driver_nl80211_sta_remove(void *priv, const u8 *addr) 9717{ 9718 struct i802_bss *bss = priv; 9719 return wpa_driver_nl80211_sta_remove(bss, addr); 9720} 9721 9722 9723#if defined(HOSTAPD) || defined(CONFIG_AP) 9724static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr, 9725 const char *ifname, int vlan_id) 9726{ 9727 struct i802_bss *bss = priv; 9728 return i802_set_sta_vlan(bss, addr, ifname, vlan_id); 9729} 9730#endif /* HOSTAPD || CONFIG_AP */ 9731 9732 9733static int driver_nl80211_read_sta_data(void *priv, 9734 struct hostap_sta_driver_data *data, 9735 const u8 *addr) 9736{ 9737 struct i802_bss *bss = priv; 9738 return i802_read_sta_data(bss, data, addr); 9739} 9740 9741 9742static int driver_nl80211_send_action(void *priv, unsigned int freq, 9743 unsigned int wait_time, 9744 const u8 *dst, const u8 *src, 9745 const u8 *bssid, 9746 const u8 *data, size_t data_len, 9747 int no_cck) 9748{ 9749 struct i802_bss *bss = priv; 9750 return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src, 9751 bssid, data, data_len, no_cck); 9752} 9753 9754 9755static int driver_nl80211_probe_req_report(void *priv, int report) 9756{ 9757 struct i802_bss *bss = priv; 9758 return wpa_driver_nl80211_probe_req_report(bss, report); 9759} 9760 9761 9762static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md, 9763 const u8 *ies, size_t ies_len) 9764{ 9765 int ret; 9766 struct nl_msg *msg; 9767 struct i802_bss *bss = priv; 9768 struct wpa_driver_nl80211_data *drv = bss->drv; 9769 u16 mdid = WPA_GET_LE16(md); 9770 9771 msg = nlmsg_alloc(); 9772 if (!msg) 9773 return -ENOMEM; 9774 9775 wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs"); 9776 nl80211_cmd(drv, msg, 0, NL80211_CMD_UPDATE_FT_IES); 9777 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 9778 NLA_PUT(msg, NL80211_ATTR_IE, ies_len, ies); 9779 NLA_PUT_U16(msg, NL80211_ATTR_MDID, mdid); 9780 9781 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 9782 if (ret) { 9783 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed " 9784 "err=%d (%s)", ret, strerror(-ret)); 9785 } 9786 9787 return ret; 9788 9789nla_put_failure: 9790 nlmsg_free(msg); 9791 return -ENOBUFS; 9792} 9793 9794 9795const struct wpa_driver_ops wpa_driver_nl80211_ops = { 9796 .name = "nl80211", 9797 .desc = "Linux nl80211/cfg80211", 9798 .get_bssid = wpa_driver_nl80211_get_bssid, 9799 .get_ssid = wpa_driver_nl80211_get_ssid, 9800 .set_key = driver_nl80211_set_key, 9801 .scan2 = driver_nl80211_scan2, 9802 .sched_scan = wpa_driver_nl80211_sched_scan, 9803 .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan, 9804 .get_scan_results2 = wpa_driver_nl80211_get_scan_results, 9805 .deauthenticate = driver_nl80211_deauthenticate, 9806 .authenticate = driver_nl80211_authenticate, 9807 .associate = wpa_driver_nl80211_associate, 9808 .global_init = nl80211_global_init, 9809 .global_deinit = nl80211_global_deinit, 9810 .init2 = wpa_driver_nl80211_init, 9811 .deinit = driver_nl80211_deinit, 9812 .get_capa = wpa_driver_nl80211_get_capa, 9813 .set_operstate = wpa_driver_nl80211_set_operstate, 9814 .set_supp_port = wpa_driver_nl80211_set_supp_port, 9815 .set_country = wpa_driver_nl80211_set_country, 9816 .set_ap = wpa_driver_nl80211_set_ap, 9817 .if_add = wpa_driver_nl80211_if_add, 9818 .if_remove = driver_nl80211_if_remove, 9819 .send_mlme = driver_nl80211_send_mlme, 9820 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data, 9821 .sta_add = wpa_driver_nl80211_sta_add, 9822 .sta_remove = driver_nl80211_sta_remove, 9823 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol, 9824 .sta_set_flags = wpa_driver_nl80211_sta_set_flags, 9825#ifdef HOSTAPD 9826 .hapd_init = i802_init, 9827 .hapd_deinit = i802_deinit, 9828 .set_wds_sta = i802_set_wds_sta, 9829#endif /* HOSTAPD */ 9830#if defined(HOSTAPD) || defined(CONFIG_AP) 9831 .get_seqnum = i802_get_seqnum, 9832 .flush = i802_flush, 9833 .get_inact_sec = i802_get_inact_sec, 9834 .sta_clear_stats = i802_sta_clear_stats, 9835 .set_rts = i802_set_rts, 9836 .set_frag = i802_set_frag, 9837 .set_tx_queue_params = i802_set_tx_queue_params, 9838 .set_sta_vlan = driver_nl80211_set_sta_vlan, 9839 .sta_deauth = i802_sta_deauth, 9840 .sta_disassoc = i802_sta_disassoc, 9841#endif /* HOSTAPD || CONFIG_AP */ 9842 .read_sta_data = driver_nl80211_read_sta_data, 9843 .set_freq = i802_set_freq, 9844 .send_action = driver_nl80211_send_action, 9845 .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait, 9846 .remain_on_channel = wpa_driver_nl80211_remain_on_channel, 9847 .cancel_remain_on_channel = 9848 wpa_driver_nl80211_cancel_remain_on_channel, 9849 .probe_req_report = driver_nl80211_probe_req_report, 9850 .deinit_ap = wpa_driver_nl80211_deinit_ap, 9851 .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli, 9852 .resume = wpa_driver_nl80211_resume, 9853 .send_ft_action = nl80211_send_ft_action, 9854 .signal_monitor = nl80211_signal_monitor, 9855 .signal_poll = nl80211_signal_poll, 9856 .send_frame = nl80211_send_frame, 9857 .shared_freq = wpa_driver_nl80211_shared_freq, 9858 .set_param = nl80211_set_param, 9859 .get_radio_name = nl80211_get_radio_name, 9860 .add_pmkid = nl80211_add_pmkid, 9861 .remove_pmkid = nl80211_remove_pmkid, 9862 .flush_pmkid = nl80211_flush_pmkid, 9863 .set_rekey_info = nl80211_set_rekey_info, 9864 .poll_client = nl80211_poll_client, 9865 .set_p2p_powersave = nl80211_set_p2p_powersave, 9866#ifdef CONFIG_TDLS 9867 .send_tdls_mgmt = nl80211_send_tdls_mgmt, 9868 .tdls_oper = nl80211_tdls_oper, 9869#endif /* CONFIG_TDLS */ 9870 .update_ft_ies = wpa_driver_nl80211_update_ft_ies, 9871#ifdef ANDROID_P2P 9872 .set_noa = wpa_driver_set_p2p_noa, 9873 .get_noa = wpa_driver_get_p2p_noa, 9874 .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie, 9875#endif 9876#ifdef ANDROID 9877 .driver_cmd = wpa_driver_nl80211_driver_cmd, 9878#endif 9879}; 9880