driver_nl80211.c revision 8da800a193fb6f8832218715f82a7b4e2d2ad338
1/* 2 * Driver interaction with Linux nl80211/cfg80211 3 * Copyright (c) 2002-2012, Jouni Malinen <j@w1.fi> 4 * Copyright (c) 2003-2004, Instant802 Networks, Inc. 5 * Copyright (c) 2005-2006, Devicescape Software, Inc. 6 * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net> 7 * Copyright (c) 2009-2010, Atheros Communications 8 * 9 * This software may be distributed under the terms of the BSD license. 10 * See README for more details. 11 */ 12 13#include "includes.h" 14#include <sys/ioctl.h> 15#include <sys/types.h> 16#include <sys/stat.h> 17#include <fcntl.h> 18#include <net/if.h> 19#include <netlink/genl/genl.h> 20#include <netlink/genl/family.h> 21#include <netlink/genl/ctrl.h> 22#include <linux/rtnetlink.h> 23#include <netpacket/packet.h> 24#include <linux/filter.h> 25#include <linux/errqueue.h> 26#include "nl80211_copy.h" 27 28#include "common.h" 29#include "eloop.h" 30#include "utils/list.h" 31#include "common/ieee802_11_defs.h" 32#include "common/ieee802_11_common.h" 33#include "l2_packet/l2_packet.h" 34#include "netlink.h" 35#include "linux_ioctl.h" 36#include "radiotap.h" 37#include "radiotap_iter.h" 38#include "rfkill.h" 39#include "driver.h" 40 41#ifndef SO_WIFI_STATUS 42# if defined(__sparc__) 43# define SO_WIFI_STATUS 0x0025 44# elif defined(__parisc__) 45# define SO_WIFI_STATUS 0x4022 46# else 47# define SO_WIFI_STATUS 41 48# endif 49 50# define SCM_WIFI_STATUS SO_WIFI_STATUS 51#endif 52 53#ifndef SO_EE_ORIGIN_TXSTATUS 54#define SO_EE_ORIGIN_TXSTATUS 4 55#endif 56 57#ifndef PACKET_TX_TIMESTAMP 58#define PACKET_TX_TIMESTAMP 16 59#endif 60 61#ifdef ANDROID 62#include "android_drv.h" 63#endif /* ANDROID */ 64#ifdef CONFIG_LIBNL20 65/* libnl 2.0 compatibility code */ 66#define nl_handle nl_sock 67#define nl80211_handle_alloc nl_socket_alloc_cb 68#define nl80211_handle_destroy nl_socket_free 69#else 70/* 71 * libnl 1.1 has a bug, it tries to allocate socket numbers densely 72 * but when you free a socket again it will mess up its bitmap and 73 * and use the wrong number the next time it needs a socket ID. 74 * Therefore, we wrap the handle alloc/destroy and add our own pid 75 * accounting. 76 */ 77static uint32_t port_bitmap[32] = { 0 }; 78 79static struct nl_handle *nl80211_handle_alloc(void *cb) 80{ 81 struct nl_handle *handle; 82 uint32_t pid = getpid() & 0x3FFFFF; 83 int i; 84 85 handle = nl_handle_alloc_cb(cb); 86 87 for (i = 0; i < 1024; i++) { 88 if (port_bitmap[i / 32] & (1 << (i % 32))) 89 continue; 90 port_bitmap[i / 32] |= 1 << (i % 32); 91 pid += i << 22; 92 break; 93 } 94 95 nl_socket_set_local_port(handle, pid); 96 97 return handle; 98} 99 100static void nl80211_handle_destroy(struct nl_handle *handle) 101{ 102 uint32_t port = nl_socket_get_local_port(handle); 103 104 port >>= 22; 105 port_bitmap[port / 32] &= ~(1 << (port % 32)); 106 107 nl_handle_destroy(handle); 108} 109#endif /* CONFIG_LIBNL20 */ 110 111 112static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg) 113{ 114 struct nl_handle *handle; 115 116 handle = nl80211_handle_alloc(cb); 117 if (handle == NULL) { 118 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 119 "callbacks (%s)", dbg); 120 return NULL; 121 } 122 123 if (genl_connect(handle)) { 124 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic " 125 "netlink (%s)", dbg); 126 nl80211_handle_destroy(handle); 127 return NULL; 128 } 129 130 return handle; 131} 132 133 134static void nl_destroy_handles(struct nl_handle **handle) 135{ 136 if (*handle == NULL) 137 return; 138 nl80211_handle_destroy(*handle); 139 *handle = NULL; 140} 141 142 143#ifndef IFF_LOWER_UP 144#define IFF_LOWER_UP 0x10000 /* driver signals L1 up */ 145#endif 146#ifndef IFF_DORMANT 147#define IFF_DORMANT 0x20000 /* driver signals dormant */ 148#endif 149 150#ifndef IF_OPER_DORMANT 151#define IF_OPER_DORMANT 5 152#endif 153#ifndef IF_OPER_UP 154#define IF_OPER_UP 6 155#endif 156 157struct nl80211_global { 158 struct dl_list interfaces; 159 int if_add_ifindex; 160 struct netlink_data *netlink; 161 struct nl_cb *nl_cb; 162 struct nl_handle *nl; 163 int nl80211_id; 164 int ioctl_sock; /* socket for ioctl() use */ 165 166 struct nl_handle *nl_event; 167}; 168 169struct nl80211_wiphy_data { 170 struct dl_list list; 171 struct dl_list bsss; 172 struct dl_list drvs; 173 174 struct nl_handle *nl_beacons; 175 struct nl_cb *nl_cb; 176 177 int wiphy_idx; 178}; 179 180static void nl80211_global_deinit(void *priv); 181 182struct i802_bss { 183 struct wpa_driver_nl80211_data *drv; 184 struct i802_bss *next; 185 int ifindex; 186 char ifname[IFNAMSIZ + 1]; 187 char brname[IFNAMSIZ]; 188 unsigned int beacon_set:1; 189 unsigned int added_if_into_bridge:1; 190 unsigned int added_bridge:1; 191 unsigned int in_deinit:1; 192 193 u8 addr[ETH_ALEN]; 194 195 int freq; 196 197 void *ctx; 198 struct nl_handle *nl_preq, *nl_mgmt; 199 struct nl_cb *nl_cb; 200 201 struct nl80211_wiphy_data *wiphy_data; 202 struct dl_list wiphy_list; 203}; 204 205struct wpa_driver_nl80211_data { 206 struct nl80211_global *global; 207 struct dl_list list; 208 struct dl_list wiphy_list; 209 char phyname[32]; 210 void *ctx; 211 int ifindex; 212 int if_removed; 213 int if_disabled; 214 int ignore_if_down_event; 215 struct rfkill_data *rfkill; 216 struct wpa_driver_capa capa; 217 u8 *extended_capa, *extended_capa_mask; 218 unsigned int extended_capa_len; 219 int has_capability; 220 221 int operstate; 222 223 int scan_complete_events; 224 225 struct nl_cb *nl_cb; 226 227 u8 auth_bssid[ETH_ALEN]; 228 u8 bssid[ETH_ALEN]; 229 int associated; 230 u8 ssid[32]; 231 size_t ssid_len; 232 enum nl80211_iftype nlmode; 233 enum nl80211_iftype ap_scan_as_station; 234 unsigned int assoc_freq; 235 236 int monitor_sock; 237 int monitor_ifidx; 238 int monitor_refcount; 239 240 unsigned int disabled_11b_rates:1; 241 unsigned int pending_remain_on_chan:1; 242 unsigned int in_interface_list:1; 243 unsigned int device_ap_sme:1; 244 unsigned int poll_command_supported:1; 245 unsigned int data_tx_status:1; 246 unsigned int scan_for_auth:1; 247 unsigned int retry_auth:1; 248 unsigned int use_monitor:1; 249 unsigned int ignore_next_local_disconnect:1; 250 251 u64 remain_on_chan_cookie; 252 u64 send_action_cookie; 253 254 unsigned int last_mgmt_freq; 255 256 struct wpa_driver_scan_filter *filter_ssids; 257 size_t num_filter_ssids; 258 259 struct i802_bss first_bss; 260 261 int eapol_tx_sock; 262 263#ifdef HOSTAPD 264 int eapol_sock; /* socket for EAPOL frames */ 265 266 int default_if_indices[16]; 267 int *if_indices; 268 int num_if_indices; 269 270 int last_freq; 271 int last_freq_ht; 272#endif /* HOSTAPD */ 273 274 /* From failed authentication command */ 275 int auth_freq; 276 u8 auth_bssid_[ETH_ALEN]; 277 u8 auth_ssid[32]; 278 size_t auth_ssid_len; 279 int auth_alg; 280 u8 *auth_ie; 281 size_t auth_ie_len; 282 u8 auth_wep_key[4][16]; 283 size_t auth_wep_key_len[4]; 284 int auth_wep_tx_keyidx; 285 int auth_local_state_change; 286 int auth_p2p; 287}; 288 289 290static void wpa_driver_nl80211_deinit(struct i802_bss *bss); 291static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, 292 void *timeout_ctx); 293static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, 294 enum nl80211_iftype nlmode); 295static int 296wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv); 297static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 298 const u8 *addr, int cmd, u16 reason_code, 299 int local_state_change); 300static void nl80211_remove_monitor_interface( 301 struct wpa_driver_nl80211_data *drv); 302static int nl80211_send_frame_cmd(struct i802_bss *bss, 303 unsigned int freq, unsigned int wait, 304 const u8 *buf, size_t buf_len, u64 *cookie, 305 int no_cck, int no_ack, int offchanok); 306static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, 307 int report); 308#ifdef ANDROID 309static int android_pno_start(struct i802_bss *bss, 310 struct wpa_driver_scan_params *params); 311static int android_pno_stop(struct i802_bss *bss); 312#endif /* ANDROID */ 313#ifdef ANDROID_P2P 314int wpa_driver_set_p2p_noa(void *priv, u8 count, int start, int duration); 315int wpa_driver_get_p2p_noa(void *priv, u8 *buf, size_t len); 316int wpa_driver_set_p2p_ps(void *priv, int legacy_ps, int opp_ps, int ctwindow); 317int wpa_driver_set_ap_wps_p2p_ie(void *priv, const struct wpabuf *beacon, 318 const struct wpabuf *proberesp, 319 const struct wpabuf *assocresp); 320 321#endif 322#ifdef HOSTAPD 323static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 324static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 325static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 326static int wpa_driver_nl80211_if_remove(struct i802_bss *bss, 327 enum wpa_driver_if_type type, 328 const char *ifname); 329#else /* HOSTAPD */ 330static inline void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 331{ 332} 333 334static inline void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 335{ 336} 337 338static inline int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 339{ 340 return 0; 341} 342#endif /* HOSTAPD */ 343#ifdef ANDROID 344extern int wpa_driver_nl80211_driver_cmd(void *priv, char *cmd, char *buf, 345 size_t buf_len); 346#endif 347 348static int wpa_driver_nl80211_set_freq(struct i802_bss *bss, 349 struct hostapd_freq_params *freq); 350static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 351 int ifindex, int disabled); 352 353static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv); 354static int wpa_driver_nl80211_authenticate_retry( 355 struct wpa_driver_nl80211_data *drv); 356 357 358static int is_ap_interface(enum nl80211_iftype nlmode) 359{ 360 return (nlmode == NL80211_IFTYPE_AP || 361 nlmode == NL80211_IFTYPE_P2P_GO); 362} 363 364 365static int is_sta_interface(enum nl80211_iftype nlmode) 366{ 367 return (nlmode == NL80211_IFTYPE_STATION || 368 nlmode == NL80211_IFTYPE_P2P_CLIENT); 369} 370 371 372static int is_p2p_interface(enum nl80211_iftype nlmode) 373{ 374 return (nlmode == NL80211_IFTYPE_P2P_CLIENT || 375 nlmode == NL80211_IFTYPE_P2P_GO); 376} 377 378 379struct nl80211_bss_info_arg { 380 struct wpa_driver_nl80211_data *drv; 381 struct wpa_scan_results *res; 382 unsigned int assoc_freq; 383 u8 assoc_bssid[ETH_ALEN]; 384}; 385 386static int bss_info_handler(struct nl_msg *msg, void *arg); 387 388 389/* nl80211 code */ 390static int ack_handler(struct nl_msg *msg, void *arg) 391{ 392 int *err = arg; 393 *err = 0; 394 return NL_STOP; 395} 396 397static int finish_handler(struct nl_msg *msg, void *arg) 398{ 399 int *ret = arg; 400 *ret = 0; 401 return NL_SKIP; 402} 403 404static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, 405 void *arg) 406{ 407 int *ret = arg; 408 *ret = err->error; 409 return NL_SKIP; 410} 411 412 413static int no_seq_check(struct nl_msg *msg, void *arg) 414{ 415 return NL_OK; 416} 417 418 419static int send_and_recv(struct nl80211_global *global, 420 struct nl_handle *nl_handle, struct nl_msg *msg, 421 int (*valid_handler)(struct nl_msg *, void *), 422 void *valid_data) 423{ 424 struct nl_cb *cb; 425 int err = -ENOMEM; 426 427 cb = nl_cb_clone(global->nl_cb); 428 if (!cb) 429 goto out; 430 431 err = nl_send_auto_complete(nl_handle, msg); 432 if (err < 0) 433 goto out; 434 435 err = 1; 436 437 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err); 438 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err); 439 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err); 440 441 if (valid_handler) 442 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, 443 valid_handler, valid_data); 444 445 while (err > 0) 446 nl_recvmsgs(nl_handle, cb); 447 out: 448 nl_cb_put(cb); 449 nlmsg_free(msg); 450 return err; 451} 452 453 454static int send_and_recv_msgs_global(struct nl80211_global *global, 455 struct nl_msg *msg, 456 int (*valid_handler)(struct nl_msg *, void *), 457 void *valid_data) 458{ 459 return send_and_recv(global, global->nl, msg, valid_handler, 460 valid_data); 461} 462 463 464#ifndef ANDROID 465static 466#endif 467int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv, 468 struct nl_msg *msg, 469 int (*valid_handler)(struct nl_msg *, void *), 470 void *valid_data) 471{ 472 return send_and_recv(drv->global, drv->global->nl, msg, 473 valid_handler, valid_data); 474} 475 476 477struct family_data { 478 const char *group; 479 int id; 480}; 481 482 483static int family_handler(struct nl_msg *msg, void *arg) 484{ 485 struct family_data *res = arg; 486 struct nlattr *tb[CTRL_ATTR_MAX + 1]; 487 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 488 struct nlattr *mcgrp; 489 int i; 490 491 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 492 genlmsg_attrlen(gnlh, 0), NULL); 493 if (!tb[CTRL_ATTR_MCAST_GROUPS]) 494 return NL_SKIP; 495 496 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) { 497 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1]; 498 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp), 499 nla_len(mcgrp), NULL); 500 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] || 501 !tb2[CTRL_ATTR_MCAST_GRP_ID] || 502 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]), 503 res->group, 504 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0) 505 continue; 506 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]); 507 break; 508 }; 509 510 return NL_SKIP; 511} 512 513 514static int nl_get_multicast_id(struct nl80211_global *global, 515 const char *family, const char *group) 516{ 517 struct nl_msg *msg; 518 int ret = -1; 519 struct family_data res = { group, -ENOENT }; 520 521 msg = nlmsg_alloc(); 522 if (!msg) 523 return -ENOMEM; 524 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"), 525 0, 0, CTRL_CMD_GETFAMILY, 0); 526 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family); 527 528 ret = send_and_recv_msgs_global(global, msg, family_handler, &res); 529 msg = NULL; 530 if (ret == 0) 531 ret = res.id; 532 533nla_put_failure: 534 nlmsg_free(msg); 535 return ret; 536} 537 538 539static void * nl80211_cmd(struct wpa_driver_nl80211_data *drv, 540 struct nl_msg *msg, int flags, uint8_t cmd) 541{ 542 return genlmsg_put(msg, 0, 0, drv->global->nl80211_id, 543 0, flags, cmd, 0); 544} 545 546 547struct wiphy_idx_data { 548 int wiphy_idx; 549}; 550 551 552static int netdev_info_handler(struct nl_msg *msg, void *arg) 553{ 554 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 555 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 556 struct wiphy_idx_data *info = arg; 557 558 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 559 genlmsg_attrlen(gnlh, 0), NULL); 560 561 if (tb[NL80211_ATTR_WIPHY]) 562 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 563 564 return NL_SKIP; 565} 566 567 568static int nl80211_get_wiphy_index(struct i802_bss *bss) 569{ 570 struct nl_msg *msg; 571 struct wiphy_idx_data data = { 572 .wiphy_idx = -1, 573 }; 574 575 msg = nlmsg_alloc(); 576 if (!msg) 577 return -1; 578 579 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE); 580 581 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 582 583 if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0) 584 return data.wiphy_idx; 585 msg = NULL; 586nla_put_failure: 587 nlmsg_free(msg); 588 return -1; 589} 590 591 592static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv, 593 struct nl80211_wiphy_data *w) 594{ 595 struct nl_msg *msg; 596 int ret = -1; 597 598 msg = nlmsg_alloc(); 599 if (!msg) 600 return -1; 601 602 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS); 603 604 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx); 605 606 ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL); 607 msg = NULL; 608 if (ret) { 609 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command " 610 "failed: ret=%d (%s)", 611 ret, strerror(-ret)); 612 goto nla_put_failure; 613 } 614 ret = 0; 615nla_put_failure: 616 nlmsg_free(msg); 617 return ret; 618} 619 620 621static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle) 622{ 623 struct nl80211_wiphy_data *w = eloop_ctx; 624 625 wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available"); 626 627 nl_recvmsgs(handle, w->nl_cb); 628} 629 630 631static int process_beacon_event(struct nl_msg *msg, void *arg) 632{ 633 struct nl80211_wiphy_data *w = arg; 634 struct wpa_driver_nl80211_data *drv; 635 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 636 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 637 union wpa_event_data event; 638 639 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 640 genlmsg_attrlen(gnlh, 0), NULL); 641 642 if (gnlh->cmd != NL80211_CMD_FRAME) { 643 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)", 644 gnlh->cmd); 645 return NL_SKIP; 646 } 647 648 if (!tb[NL80211_ATTR_FRAME]) 649 return NL_SKIP; 650 651 dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data, 652 wiphy_list) { 653 os_memset(&event, 0, sizeof(event)); 654 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]); 655 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]); 656 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 657 } 658 659 return NL_SKIP; 660} 661 662 663static struct nl80211_wiphy_data * 664nl80211_get_wiphy_data_ap(struct i802_bss *bss) 665{ 666 static DEFINE_DL_LIST(nl80211_wiphys); 667 struct nl80211_wiphy_data *w; 668 int wiphy_idx, found = 0; 669 struct i802_bss *tmp_bss; 670 671 if (bss->wiphy_data != NULL) 672 return bss->wiphy_data; 673 674 wiphy_idx = nl80211_get_wiphy_index(bss); 675 676 dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) { 677 if (w->wiphy_idx == wiphy_idx) 678 goto add; 679 } 680 681 /* alloc new one */ 682 w = os_zalloc(sizeof(*w)); 683 if (w == NULL) 684 return NULL; 685 w->wiphy_idx = wiphy_idx; 686 dl_list_init(&w->bsss); 687 dl_list_init(&w->drvs); 688 689 w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 690 if (!w->nl_cb) { 691 os_free(w); 692 return NULL; 693 } 694 nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL); 695 nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event, 696 w); 697 698 w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb, 699 "wiphy beacons"); 700 if (w->nl_beacons == NULL) { 701 os_free(w); 702 return NULL; 703 } 704 705 if (nl80211_register_beacons(bss->drv, w)) { 706 nl_destroy_handles(&w->nl_beacons); 707 os_free(w); 708 return NULL; 709 } 710 711 eloop_register_read_sock(nl_socket_get_fd(w->nl_beacons), 712 nl80211_recv_beacons, w, w->nl_beacons); 713 714 dl_list_add(&nl80211_wiphys, &w->list); 715 716add: 717 /* drv entry for this bss already there? */ 718 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) { 719 if (tmp_bss->drv == bss->drv) { 720 found = 1; 721 break; 722 } 723 } 724 /* if not add it */ 725 if (!found) 726 dl_list_add(&w->drvs, &bss->drv->wiphy_list); 727 728 dl_list_add(&w->bsss, &bss->wiphy_list); 729 bss->wiphy_data = w; 730 return w; 731} 732 733 734static void nl80211_put_wiphy_data_ap(struct i802_bss *bss) 735{ 736 struct nl80211_wiphy_data *w = bss->wiphy_data; 737 struct i802_bss *tmp_bss; 738 int found = 0; 739 740 if (w == NULL) 741 return; 742 bss->wiphy_data = NULL; 743 dl_list_del(&bss->wiphy_list); 744 745 /* still any for this drv present? */ 746 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) { 747 if (tmp_bss->drv == bss->drv) { 748 found = 1; 749 break; 750 } 751 } 752 /* if not remove it */ 753 if (!found) 754 dl_list_del(&bss->drv->wiphy_list); 755 756 if (!dl_list_empty(&w->bsss)) 757 return; 758 759 eloop_unregister_read_sock(nl_socket_get_fd(w->nl_beacons)); 760 761 nl_cb_put(w->nl_cb); 762 nl_destroy_handles(&w->nl_beacons); 763 dl_list_del(&w->list); 764 os_free(w); 765} 766 767 768static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid) 769{ 770 struct i802_bss *bss = priv; 771 struct wpa_driver_nl80211_data *drv = bss->drv; 772 if (!drv->associated) 773 return -1; 774 os_memcpy(bssid, drv->bssid, ETH_ALEN); 775 return 0; 776} 777 778 779static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid) 780{ 781 struct i802_bss *bss = priv; 782 struct wpa_driver_nl80211_data *drv = bss->drv; 783 if (!drv->associated) 784 return -1; 785 os_memcpy(ssid, drv->ssid, drv->ssid_len); 786 return drv->ssid_len; 787} 788 789 790static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv, 791 char *buf, size_t len, int del) 792{ 793 union wpa_event_data event; 794 795 os_memset(&event, 0, sizeof(event)); 796 if (len > sizeof(event.interface_status.ifname)) 797 len = sizeof(event.interface_status.ifname) - 1; 798 os_memcpy(event.interface_status.ifname, buf, len); 799 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED : 800 EVENT_INTERFACE_ADDED; 801 802 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s", 803 del ? "DEL" : "NEW", 804 event.interface_status.ifname, 805 del ? "removed" : "added"); 806 807 if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) { 808 if (del) { 809 if (drv->if_removed) { 810 wpa_printf(MSG_DEBUG, "nl80211: if_removed " 811 "already set - ignore event"); 812 return; 813 } 814 drv->if_removed = 1; 815 } else { 816 if (if_nametoindex(drv->first_bss.ifname) == 0) { 817 wpa_printf(MSG_DEBUG, "nl80211: Interface %s " 818 "does not exist - ignore " 819 "RTM_NEWLINK", 820 drv->first_bss.ifname); 821 return; 822 } 823 if (!drv->if_removed) { 824 wpa_printf(MSG_DEBUG, "nl80211: if_removed " 825 "already cleared - ignore event"); 826 return; 827 } 828 drv->if_removed = 0; 829 } 830 } 831 832 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event); 833} 834 835 836static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv, 837 u8 *buf, size_t len) 838{ 839 int attrlen, rta_len; 840 struct rtattr *attr; 841 842 attrlen = len; 843 attr = (struct rtattr *) buf; 844 845 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 846 while (RTA_OK(attr, attrlen)) { 847 if (attr->rta_type == IFLA_IFNAME) { 848 if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname) 849 == 0) 850 return 1; 851 else 852 break; 853 } 854 attr = RTA_NEXT(attr, attrlen); 855 } 856 857 return 0; 858} 859 860 861static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv, 862 int ifindex, u8 *buf, size_t len) 863{ 864 if (drv->ifindex == ifindex) 865 return 1; 866 867 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) { 868 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname); 869 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed " 870 "interface"); 871 wpa_driver_nl80211_finish_drv_init(drv); 872 return 1; 873 } 874 875 return 0; 876} 877 878 879static struct wpa_driver_nl80211_data * 880nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len) 881{ 882 struct wpa_driver_nl80211_data *drv; 883 dl_list_for_each(drv, &global->interfaces, 884 struct wpa_driver_nl80211_data, list) { 885 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) || 886 have_ifidx(drv, idx)) 887 return drv; 888 } 889 return NULL; 890} 891 892 893static void wpa_driver_nl80211_event_rtm_newlink(void *ctx, 894 struct ifinfomsg *ifi, 895 u8 *buf, size_t len) 896{ 897 struct nl80211_global *global = ctx; 898 struct wpa_driver_nl80211_data *drv; 899 int attrlen, rta_len; 900 struct rtattr *attr; 901 u32 brid = 0; 902 char namebuf[IFNAMSIZ]; 903 904 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len); 905 if (!drv) { 906 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign " 907 "ifindex %d", ifi->ifi_index); 908 return; 909 } 910 911 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x " 912 "(%s%s%s%s)", 913 drv->operstate, ifi->ifi_flags, 914 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "", 915 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "", 916 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "", 917 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : ""); 918 919 if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) { 920 if (if_indextoname(ifi->ifi_index, namebuf) && 921 linux_iface_up(drv->global->ioctl_sock, 922 drv->first_bss.ifname) > 0) { 923 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down " 924 "event since interface %s is up", namebuf); 925 return; 926 } 927 wpa_printf(MSG_DEBUG, "nl80211: Interface down"); 928 if (drv->ignore_if_down_event) { 929 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down " 930 "event generated by mode change"); 931 drv->ignore_if_down_event = 0; 932 } else { 933 drv->if_disabled = 1; 934 wpa_supplicant_event(drv->ctx, 935 EVENT_INTERFACE_DISABLED, NULL); 936 } 937 } 938 939 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) { 940 if (if_indextoname(ifi->ifi_index, namebuf) && 941 linux_iface_up(drv->global->ioctl_sock, 942 drv->first_bss.ifname) == 0) { 943 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 944 "event since interface %s is down", 945 namebuf); 946 } else if (if_nametoindex(drv->first_bss.ifname) == 0) { 947 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 948 "event since interface %s does not exist", 949 drv->first_bss.ifname); 950 } else if (drv->if_removed) { 951 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 952 "event since interface %s is marked " 953 "removed", drv->first_bss.ifname); 954 } else { 955 wpa_printf(MSG_DEBUG, "nl80211: Interface up"); 956 drv->if_disabled = 0; 957 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, 958 NULL); 959 } 960 } 961 962 /* 963 * Some drivers send the association event before the operup event--in 964 * this case, lifting operstate in wpa_driver_nl80211_set_operstate() 965 * fails. This will hit us when wpa_supplicant does not need to do 966 * IEEE 802.1X authentication 967 */ 968 if (drv->operstate == 1 && 969 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP && 970 !(ifi->ifi_flags & IFF_RUNNING)) 971 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 972 -1, IF_OPER_UP); 973 974 attrlen = len; 975 attr = (struct rtattr *) buf; 976 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 977 while (RTA_OK(attr, attrlen)) { 978 if (attr->rta_type == IFLA_IFNAME) { 979 wpa_driver_nl80211_event_link( 980 drv, 981 ((char *) attr) + rta_len, 982 attr->rta_len - rta_len, 0); 983 } else if (attr->rta_type == IFLA_MASTER) 984 brid = nla_get_u32((struct nlattr *) attr); 985 attr = RTA_NEXT(attr, attrlen); 986 } 987 988 if (ifi->ifi_family == AF_BRIDGE && brid) { 989 /* device has been added to bridge */ 990 if_indextoname(brid, namebuf); 991 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s", 992 brid, namebuf); 993 add_ifidx(drv, brid); 994 } 995} 996 997 998static void wpa_driver_nl80211_event_rtm_dellink(void *ctx, 999 struct ifinfomsg *ifi, 1000 u8 *buf, size_t len) 1001{ 1002 struct nl80211_global *global = ctx; 1003 struct wpa_driver_nl80211_data *drv; 1004 int attrlen, rta_len; 1005 struct rtattr *attr; 1006 u32 brid = 0; 1007 1008 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len); 1009 if (!drv) { 1010 wpa_printf(MSG_DEBUG, "nl80211: Ignore dellink event for " 1011 "foreign ifindex %d", ifi->ifi_index); 1012 return; 1013 } 1014 1015 attrlen = len; 1016 attr = (struct rtattr *) buf; 1017 1018 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 1019 while (RTA_OK(attr, attrlen)) { 1020 if (attr->rta_type == IFLA_IFNAME) { 1021 wpa_driver_nl80211_event_link( 1022 drv, 1023 ((char *) attr) + rta_len, 1024 attr->rta_len - rta_len, 1); 1025 } else if (attr->rta_type == IFLA_MASTER) 1026 brid = nla_get_u32((struct nlattr *) attr); 1027 attr = RTA_NEXT(attr, attrlen); 1028 } 1029 1030 if (ifi->ifi_family == AF_BRIDGE && brid) { 1031 /* device has been removed from bridge */ 1032 char namebuf[IFNAMSIZ]; 1033 if_indextoname(brid, namebuf); 1034 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge " 1035 "%s", brid, namebuf); 1036 del_ifidx(drv, brid); 1037 } 1038} 1039 1040 1041static void mlme_event_auth(struct wpa_driver_nl80211_data *drv, 1042 const u8 *frame, size_t len) 1043{ 1044 const struct ieee80211_mgmt *mgmt; 1045 union wpa_event_data event; 1046 1047 wpa_printf(MSG_DEBUG, "nl80211: Authenticate event"); 1048 mgmt = (const struct ieee80211_mgmt *) frame; 1049 if (len < 24 + sizeof(mgmt->u.auth)) { 1050 wpa_printf(MSG_DEBUG, "nl80211: Too short association event " 1051 "frame"); 1052 return; 1053 } 1054 1055 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN); 1056 os_memset(&event, 0, sizeof(event)); 1057 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN); 1058 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg); 1059 event.auth.auth_transaction = 1060 le_to_host16(mgmt->u.auth.auth_transaction); 1061 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code); 1062 if (len > 24 + sizeof(mgmt->u.auth)) { 1063 event.auth.ies = mgmt->u.auth.variable; 1064 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth); 1065 } 1066 1067 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event); 1068} 1069 1070 1071static unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv) 1072{ 1073 struct nl_msg *msg; 1074 int ret; 1075 struct nl80211_bss_info_arg arg; 1076 1077 os_memset(&arg, 0, sizeof(arg)); 1078 msg = nlmsg_alloc(); 1079 if (!msg) 1080 goto nla_put_failure; 1081 1082 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 1083 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1084 1085 arg.drv = drv; 1086 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 1087 msg = NULL; 1088 if (ret == 0) { 1089 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the " 1090 "associated BSS from scan results: %u MHz", 1091 arg.assoc_freq); 1092 return arg.assoc_freq ? arg.assoc_freq : drv->assoc_freq; 1093 } 1094 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 1095 "(%s)", ret, strerror(-ret)); 1096nla_put_failure: 1097 nlmsg_free(msg); 1098 return drv->assoc_freq; 1099} 1100 1101 1102static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv, 1103 const u8 *frame, size_t len) 1104{ 1105 const struct ieee80211_mgmt *mgmt; 1106 union wpa_event_data event; 1107 u16 status; 1108 1109 wpa_printf(MSG_DEBUG, "nl80211: Associate event"); 1110 mgmt = (const struct ieee80211_mgmt *) frame; 1111 if (len < 24 + sizeof(mgmt->u.assoc_resp)) { 1112 wpa_printf(MSG_DEBUG, "nl80211: Too short association event " 1113 "frame"); 1114 return; 1115 } 1116 1117 status = le_to_host16(mgmt->u.assoc_resp.status_code); 1118 if (status != WLAN_STATUS_SUCCESS) { 1119 os_memset(&event, 0, sizeof(event)); 1120 event.assoc_reject.bssid = mgmt->bssid; 1121 if (len > 24 + sizeof(mgmt->u.assoc_resp)) { 1122 event.assoc_reject.resp_ies = 1123 (u8 *) mgmt->u.assoc_resp.variable; 1124 event.assoc_reject.resp_ies_len = 1125 len - 24 - sizeof(mgmt->u.assoc_resp); 1126 } 1127 event.assoc_reject.status_code = status; 1128 1129 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event); 1130 return; 1131 } 1132 1133 drv->associated = 1; 1134 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN); 1135 1136 os_memset(&event, 0, sizeof(event)); 1137 if (len > 24 + sizeof(mgmt->u.assoc_resp)) { 1138 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable; 1139 event.assoc_info.resp_ies_len = 1140 len - 24 - sizeof(mgmt->u.assoc_resp); 1141 } 1142 1143 event.assoc_info.freq = drv->assoc_freq; 1144 1145 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); 1146} 1147 1148 1149static void mlme_event_connect(struct wpa_driver_nl80211_data *drv, 1150 enum nl80211_commands cmd, struct nlattr *status, 1151 struct nlattr *addr, struct nlattr *req_ie, 1152 struct nlattr *resp_ie) 1153{ 1154 union wpa_event_data event; 1155 1156 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 1157 /* 1158 * Avoid reporting two association events that would confuse 1159 * the core code. 1160 */ 1161 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) " 1162 "when using userspace SME", cmd); 1163 return; 1164 } 1165 1166 if (cmd == NL80211_CMD_CONNECT) 1167 wpa_printf(MSG_DEBUG, "nl80211: Connect event"); 1168 else if (cmd == NL80211_CMD_ROAM) 1169 wpa_printf(MSG_DEBUG, "nl80211: Roam event"); 1170 1171 os_memset(&event, 0, sizeof(event)); 1172 if (cmd == NL80211_CMD_CONNECT && 1173 nla_get_u16(status) != WLAN_STATUS_SUCCESS) { 1174 if (addr) 1175 event.assoc_reject.bssid = nla_data(addr); 1176 if (resp_ie) { 1177 event.assoc_reject.resp_ies = nla_data(resp_ie); 1178 event.assoc_reject.resp_ies_len = nla_len(resp_ie); 1179 } 1180 event.assoc_reject.status_code = nla_get_u16(status); 1181 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event); 1182 return; 1183 } 1184 1185 drv->associated = 1; 1186 if (addr) 1187 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN); 1188 1189 if (req_ie) { 1190 event.assoc_info.req_ies = nla_data(req_ie); 1191 event.assoc_info.req_ies_len = nla_len(req_ie); 1192 } 1193 if (resp_ie) { 1194 event.assoc_info.resp_ies = nla_data(resp_ie); 1195 event.assoc_info.resp_ies_len = nla_len(resp_ie); 1196 } 1197 1198 event.assoc_info.freq = nl80211_get_assoc_freq(drv); 1199 1200 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); 1201} 1202 1203 1204static void mlme_event_disconnect(struct wpa_driver_nl80211_data *drv, 1205 struct nlattr *reason, struct nlattr *addr, 1206 struct nlattr *by_ap) 1207{ 1208 union wpa_event_data data; 1209 unsigned int locally_generated = by_ap == NULL; 1210 1211 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 1212 /* 1213 * Avoid reporting two disassociation events that could 1214 * confuse the core code. 1215 */ 1216 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect " 1217 "event when using userspace SME"); 1218 return; 1219 } 1220 1221 if (drv->ignore_next_local_disconnect) { 1222 drv->ignore_next_local_disconnect = 0; 1223 if (locally_generated) { 1224 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect " 1225 "event triggered during reassociation"); 1226 return; 1227 } 1228 wpa_printf(MSG_WARNING, "nl80211: Was expecting local " 1229 "disconnect but got another disconnect " 1230 "event first"); 1231 } 1232 1233 wpa_printf(MSG_DEBUG, "nl80211: Disconnect event"); 1234 drv->associated = 0; 1235 os_memset(&data, 0, sizeof(data)); 1236 if (reason) 1237 data.deauth_info.reason_code = nla_get_u16(reason); 1238 data.deauth_info.locally_generated = by_ap == NULL; 1239 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, &data); 1240} 1241 1242 1243static void mlme_event_ch_switch(struct wpa_driver_nl80211_data *drv, 1244 struct nlattr *freq, struct nlattr *type) 1245{ 1246 union wpa_event_data data; 1247 int ht_enabled = 1; 1248 int chan_offset = 0; 1249 1250 wpa_printf(MSG_DEBUG, "nl80211: Channel switch event"); 1251 1252 if (!freq || !type) 1253 return; 1254 1255 switch (nla_get_u32(type)) { 1256 case NL80211_CHAN_NO_HT: 1257 ht_enabled = 0; 1258 break; 1259 case NL80211_CHAN_HT20: 1260 break; 1261 case NL80211_CHAN_HT40PLUS: 1262 chan_offset = 1; 1263 break; 1264 case NL80211_CHAN_HT40MINUS: 1265 chan_offset = -1; 1266 break; 1267 } 1268 1269 data.ch_switch.freq = nla_get_u32(freq); 1270 data.ch_switch.ht_enabled = ht_enabled; 1271 data.ch_switch.ch_offset = chan_offset; 1272 1273 wpa_supplicant_event(drv->ctx, EVENT_CH_SWITCH, &data); 1274} 1275 1276 1277static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv, 1278 enum nl80211_commands cmd, struct nlattr *addr) 1279{ 1280 union wpa_event_data event; 1281 enum wpa_event_type ev; 1282 1283 if (nla_len(addr) != ETH_ALEN) 1284 return; 1285 1286 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR, 1287 cmd, MAC2STR((u8 *) nla_data(addr))); 1288 1289 if (cmd == NL80211_CMD_AUTHENTICATE) 1290 ev = EVENT_AUTH_TIMED_OUT; 1291 else if (cmd == NL80211_CMD_ASSOCIATE) 1292 ev = EVENT_ASSOC_TIMED_OUT; 1293 else 1294 return; 1295 1296 os_memset(&event, 0, sizeof(event)); 1297 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN); 1298 wpa_supplicant_event(drv->ctx, ev, &event); 1299} 1300 1301 1302static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv, 1303 struct nlattr *freq, struct nlattr *sig, 1304 const u8 *frame, size_t len) 1305{ 1306 const struct ieee80211_mgmt *mgmt; 1307 union wpa_event_data event; 1308 u16 fc, stype; 1309 int ssi_signal = 0; 1310 1311 wpa_printf(MSG_MSGDUMP, "nl80211: Frame event"); 1312 mgmt = (const struct ieee80211_mgmt *) frame; 1313 if (len < 24) { 1314 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame"); 1315 return; 1316 } 1317 1318 fc = le_to_host16(mgmt->frame_control); 1319 stype = WLAN_FC_GET_STYPE(fc); 1320 1321 if (sig) 1322 ssi_signal = (s32) nla_get_u32(sig); 1323 1324 os_memset(&event, 0, sizeof(event)); 1325 if (freq) { 1326 event.rx_action.freq = nla_get_u32(freq); 1327 drv->last_mgmt_freq = event.rx_action.freq; 1328 } 1329 if (stype == WLAN_FC_STYPE_ACTION) { 1330 event.rx_action.da = mgmt->da; 1331 event.rx_action.sa = mgmt->sa; 1332 event.rx_action.bssid = mgmt->bssid; 1333 event.rx_action.category = mgmt->u.action.category; 1334 event.rx_action.data = &mgmt->u.action.category + 1; 1335 event.rx_action.len = frame + len - event.rx_action.data; 1336 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event); 1337 } else { 1338 event.rx_mgmt.frame = frame; 1339 event.rx_mgmt.frame_len = len; 1340 event.rx_mgmt.ssi_signal = ssi_signal; 1341 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 1342 } 1343} 1344 1345 1346static void mlme_event_mgmt_tx_status(struct wpa_driver_nl80211_data *drv, 1347 struct nlattr *cookie, const u8 *frame, 1348 size_t len, struct nlattr *ack) 1349{ 1350 union wpa_event_data event; 1351 const struct ieee80211_hdr *hdr; 1352 u16 fc; 1353 1354 wpa_printf(MSG_DEBUG, "nl80211: Frame TX status event"); 1355 if (!is_ap_interface(drv->nlmode)) { 1356 u64 cookie_val; 1357 1358 if (!cookie) 1359 return; 1360 1361 cookie_val = nla_get_u64(cookie); 1362 wpa_printf(MSG_DEBUG, "nl80211: Action TX status:" 1363 " cookie=0%llx%s (ack=%d)", 1364 (long long unsigned int) cookie_val, 1365 cookie_val == drv->send_action_cookie ? 1366 " (match)" : " (unknown)", ack != NULL); 1367 if (cookie_val != drv->send_action_cookie) 1368 return; 1369 } 1370 1371 hdr = (const struct ieee80211_hdr *) frame; 1372 fc = le_to_host16(hdr->frame_control); 1373 1374 os_memset(&event, 0, sizeof(event)); 1375 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 1376 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 1377 event.tx_status.dst = hdr->addr1; 1378 event.tx_status.data = frame; 1379 event.tx_status.data_len = len; 1380 event.tx_status.ack = ack != NULL; 1381 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event); 1382} 1383 1384 1385static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv, 1386 enum wpa_event_type type, 1387 const u8 *frame, size_t len) 1388{ 1389 const struct ieee80211_mgmt *mgmt; 1390 union wpa_event_data event; 1391 const u8 *bssid = NULL; 1392 u16 reason_code = 0; 1393 1394 if (type == EVENT_DEAUTH) 1395 wpa_printf(MSG_DEBUG, "nl80211: Deauthenticate event"); 1396 else 1397 wpa_printf(MSG_DEBUG, "nl80211: Disassociate event"); 1398 1399 mgmt = (const struct ieee80211_mgmt *) frame; 1400 if (len >= 24) { 1401 bssid = mgmt->bssid; 1402 1403 if (drv->associated != 0 && 1404 os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 && 1405 os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) { 1406 /* 1407 * We have presumably received this deauth as a 1408 * response to a clear_state_mismatch() outgoing 1409 * deauth. Don't let it take us offline! 1410 */ 1411 wpa_printf(MSG_DEBUG, "nl80211: Deauth received " 1412 "from Unknown BSSID " MACSTR " -- ignoring", 1413 MAC2STR(bssid)); 1414 return; 1415 } 1416 } 1417 1418 drv->associated = 0; 1419 os_memset(&event, 0, sizeof(event)); 1420 1421 /* Note: Same offset for Reason Code in both frame subtypes */ 1422 if (len >= 24 + sizeof(mgmt->u.deauth)) 1423 reason_code = le_to_host16(mgmt->u.deauth.reason_code); 1424 1425 if (type == EVENT_DISASSOC) { 1426 event.disassoc_info.locally_generated = 1427 !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN); 1428 event.disassoc_info.addr = bssid; 1429 event.disassoc_info.reason_code = reason_code; 1430 if (frame + len > mgmt->u.disassoc.variable) { 1431 event.disassoc_info.ie = mgmt->u.disassoc.variable; 1432 event.disassoc_info.ie_len = frame + len - 1433 mgmt->u.disassoc.variable; 1434 } 1435 } else { 1436 event.deauth_info.locally_generated = 1437 !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN); 1438 event.deauth_info.addr = bssid; 1439 event.deauth_info.reason_code = reason_code; 1440 if (frame + len > mgmt->u.deauth.variable) { 1441 event.deauth_info.ie = mgmt->u.deauth.variable; 1442 event.deauth_info.ie_len = frame + len - 1443 mgmt->u.deauth.variable; 1444 } 1445 } 1446 1447 wpa_supplicant_event(drv->ctx, type, &event); 1448} 1449 1450 1451static void mlme_event_unprot_disconnect(struct wpa_driver_nl80211_data *drv, 1452 enum wpa_event_type type, 1453 const u8 *frame, size_t len) 1454{ 1455 const struct ieee80211_mgmt *mgmt; 1456 union wpa_event_data event; 1457 u16 reason_code = 0; 1458 1459 if (type == EVENT_UNPROT_DEAUTH) 1460 wpa_printf(MSG_DEBUG, "nl80211: Unprot Deauthenticate event"); 1461 else 1462 wpa_printf(MSG_DEBUG, "nl80211: Unprot Disassociate event"); 1463 1464 if (len < 24) 1465 return; 1466 1467 mgmt = (const struct ieee80211_mgmt *) frame; 1468 1469 os_memset(&event, 0, sizeof(event)); 1470 /* Note: Same offset for Reason Code in both frame subtypes */ 1471 if (len >= 24 + sizeof(mgmt->u.deauth)) 1472 reason_code = le_to_host16(mgmt->u.deauth.reason_code); 1473 1474 if (type == EVENT_UNPROT_DISASSOC) { 1475 event.unprot_disassoc.sa = mgmt->sa; 1476 event.unprot_disassoc.da = mgmt->da; 1477 event.unprot_disassoc.reason_code = reason_code; 1478 } else { 1479 event.unprot_deauth.sa = mgmt->sa; 1480 event.unprot_deauth.da = mgmt->da; 1481 event.unprot_deauth.reason_code = reason_code; 1482 } 1483 1484 wpa_supplicant_event(drv->ctx, type, &event); 1485} 1486 1487 1488static void mlme_event(struct i802_bss *bss, 1489 enum nl80211_commands cmd, struct nlattr *frame, 1490 struct nlattr *addr, struct nlattr *timed_out, 1491 struct nlattr *freq, struct nlattr *ack, 1492 struct nlattr *cookie, struct nlattr *sig) 1493{ 1494 struct wpa_driver_nl80211_data *drv = bss->drv; 1495 const u8 *data; 1496 size_t len; 1497 1498 if (timed_out && addr) { 1499 mlme_timeout_event(drv, cmd, addr); 1500 return; 1501 } 1502 1503 if (frame == NULL) { 1504 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame " 1505 "data", cmd); 1506 return; 1507 } 1508 1509 data = nla_data(frame); 1510 len = nla_len(frame); 1511 if (len < 4 + ETH_ALEN) { 1512 wpa_printf(MSG_MSGDUMP, "nl80211: MLME event %d on %s(" MACSTR 1513 ") - too short", 1514 cmd, bss->ifname, MAC2STR(bss->addr)); 1515 return; 1516 } 1517 wpa_printf(MSG_MSGDUMP, "nl80211: MLME event %d on %s(" MACSTR ") A1=" 1518 MACSTR, cmd, bss->ifname, MAC2STR(bss->addr), 1519 MAC2STR(data + 4)); 1520 if (cmd != NL80211_CMD_FRAME_TX_STATUS && !(data[4] & 0x01) && 1521 os_memcmp(bss->addr, data + 4, ETH_ALEN) != 0) { 1522 wpa_printf(MSG_MSGDUMP, "nl80211: %s: Ignore MLME frame event " 1523 "for foreign address", bss->ifname); 1524 return; 1525 } 1526 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame", 1527 nla_data(frame), nla_len(frame)); 1528 1529 switch (cmd) { 1530 case NL80211_CMD_AUTHENTICATE: 1531 mlme_event_auth(drv, nla_data(frame), nla_len(frame)); 1532 break; 1533 case NL80211_CMD_ASSOCIATE: 1534 mlme_event_assoc(drv, nla_data(frame), nla_len(frame)); 1535 break; 1536 case NL80211_CMD_DEAUTHENTICATE: 1537 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH, 1538 nla_data(frame), nla_len(frame)); 1539 break; 1540 case NL80211_CMD_DISASSOCIATE: 1541 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC, 1542 nla_data(frame), nla_len(frame)); 1543 break; 1544 case NL80211_CMD_FRAME: 1545 mlme_event_mgmt(drv, freq, sig, nla_data(frame), 1546 nla_len(frame)); 1547 break; 1548 case NL80211_CMD_FRAME_TX_STATUS: 1549 mlme_event_mgmt_tx_status(drv, cookie, nla_data(frame), 1550 nla_len(frame), ack); 1551 break; 1552 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 1553 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH, 1554 nla_data(frame), nla_len(frame)); 1555 break; 1556 case NL80211_CMD_UNPROT_DISASSOCIATE: 1557 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC, 1558 nla_data(frame), nla_len(frame)); 1559 break; 1560 default: 1561 break; 1562 } 1563} 1564 1565 1566static void mlme_event_michael_mic_failure(struct i802_bss *bss, 1567 struct nlattr *tb[]) 1568{ 1569 union wpa_event_data data; 1570 1571 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure"); 1572 os_memset(&data, 0, sizeof(data)); 1573 if (tb[NL80211_ATTR_MAC]) { 1574 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address", 1575 nla_data(tb[NL80211_ATTR_MAC]), 1576 nla_len(tb[NL80211_ATTR_MAC])); 1577 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]); 1578 } 1579 if (tb[NL80211_ATTR_KEY_SEQ]) { 1580 wpa_hexdump(MSG_DEBUG, "nl80211: TSC", 1581 nla_data(tb[NL80211_ATTR_KEY_SEQ]), 1582 nla_len(tb[NL80211_ATTR_KEY_SEQ])); 1583 } 1584 if (tb[NL80211_ATTR_KEY_TYPE]) { 1585 enum nl80211_key_type key_type = 1586 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]); 1587 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type); 1588 if (key_type == NL80211_KEYTYPE_PAIRWISE) 1589 data.michael_mic_failure.unicast = 1; 1590 } else 1591 data.michael_mic_failure.unicast = 1; 1592 1593 if (tb[NL80211_ATTR_KEY_IDX]) { 1594 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]); 1595 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id); 1596 } 1597 1598 wpa_supplicant_event(bss->ctx, EVENT_MICHAEL_MIC_FAILURE, &data); 1599} 1600 1601 1602static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv, 1603 struct nlattr *tb[]) 1604{ 1605 if (tb[NL80211_ATTR_MAC] == NULL) { 1606 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined " 1607 "event"); 1608 return; 1609 } 1610 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 1611 drv->associated = 1; 1612 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined", 1613 MAC2STR(drv->bssid)); 1614 1615 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL); 1616} 1617 1618 1619static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv, 1620 int cancel_event, struct nlattr *tb[]) 1621{ 1622 unsigned int freq, chan_type, duration; 1623 union wpa_event_data data; 1624 u64 cookie; 1625 1626 if (tb[NL80211_ATTR_WIPHY_FREQ]) 1627 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]); 1628 else 1629 freq = 0; 1630 1631 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) 1632 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 1633 else 1634 chan_type = 0; 1635 1636 if (tb[NL80211_ATTR_DURATION]) 1637 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]); 1638 else 1639 duration = 0; 1640 1641 if (tb[NL80211_ATTR_COOKIE]) 1642 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 1643 else 1644 cookie = 0; 1645 1646 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d " 1647 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))", 1648 cancel_event, freq, chan_type, duration, 1649 (long long unsigned int) cookie, 1650 cookie == drv->remain_on_chan_cookie ? "match" : "unknown"); 1651 1652 if (cookie != drv->remain_on_chan_cookie) 1653 return; /* not for us */ 1654 1655 if (cancel_event) 1656 drv->pending_remain_on_chan = 0; 1657 1658 os_memset(&data, 0, sizeof(data)); 1659 data.remain_on_channel.freq = freq; 1660 data.remain_on_channel.duration = duration; 1661 wpa_supplicant_event(drv->ctx, cancel_event ? 1662 EVENT_CANCEL_REMAIN_ON_CHANNEL : 1663 EVENT_REMAIN_ON_CHANNEL, &data); 1664} 1665 1666 1667static void mlme_event_ft_event(struct wpa_driver_nl80211_data *drv, 1668 struct nlattr *tb[]) 1669{ 1670 union wpa_event_data data; 1671 1672 os_memset(&data, 0, sizeof(data)); 1673 1674 if (tb[NL80211_ATTR_IE]) { 1675 data.ft_ies.ies = nla_data(tb[NL80211_ATTR_IE]); 1676 data.ft_ies.ies_len = nla_len(tb[NL80211_ATTR_IE]); 1677 } 1678 1679 if (tb[NL80211_ATTR_IE_RIC]) { 1680 data.ft_ies.ric_ies = nla_data(tb[NL80211_ATTR_IE_RIC]); 1681 data.ft_ies.ric_ies_len = nla_len(tb[NL80211_ATTR_IE_RIC]); 1682 } 1683 1684 if (tb[NL80211_ATTR_MAC]) 1685 os_memcpy(data.ft_ies.target_ap, 1686 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 1687 1688 wpa_printf(MSG_DEBUG, "nl80211: FT event target_ap " MACSTR, 1689 MAC2STR(data.ft_ies.target_ap)); 1690 1691 wpa_supplicant_event(drv->ctx, EVENT_FT_RESPONSE, &data); 1692} 1693 1694 1695static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted, 1696 struct nlattr *tb[]) 1697{ 1698 union wpa_event_data event; 1699 struct nlattr *nl; 1700 int rem; 1701 struct scan_info *info; 1702#define MAX_REPORT_FREQS 50 1703 int freqs[MAX_REPORT_FREQS]; 1704 int num_freqs = 0; 1705 1706 if (drv->scan_for_auth) { 1707 drv->scan_for_auth = 0; 1708 wpa_printf(MSG_DEBUG, "nl80211: Scan results for missing " 1709 "cfg80211 BSS entry"); 1710 wpa_driver_nl80211_authenticate_retry(drv); 1711 return; 1712 } 1713 1714 os_memset(&event, 0, sizeof(event)); 1715 info = &event.scan_info; 1716 info->aborted = aborted; 1717 1718 if (tb[NL80211_ATTR_SCAN_SSIDS]) { 1719 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) { 1720 struct wpa_driver_scan_ssid *s = 1721 &info->ssids[info->num_ssids]; 1722 s->ssid = nla_data(nl); 1723 s->ssid_len = nla_len(nl); 1724 info->num_ssids++; 1725 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS) 1726 break; 1727 } 1728 } 1729 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) { 1730 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem) 1731 { 1732 freqs[num_freqs] = nla_get_u32(nl); 1733 num_freqs++; 1734 if (num_freqs == MAX_REPORT_FREQS - 1) 1735 break; 1736 } 1737 info->freqs = freqs; 1738 info->num_freqs = num_freqs; 1739 } 1740 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event); 1741} 1742 1743 1744static int get_link_signal(struct nl_msg *msg, void *arg) 1745{ 1746 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1747 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1748 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1]; 1749 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = { 1750 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 }, 1751 }; 1752 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1]; 1753 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = { 1754 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 }, 1755 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 }, 1756 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG }, 1757 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG }, 1758 }; 1759 struct wpa_signal_info *sig_change = arg; 1760 1761 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1762 genlmsg_attrlen(gnlh, 0), NULL); 1763 if (!tb[NL80211_ATTR_STA_INFO] || 1764 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX, 1765 tb[NL80211_ATTR_STA_INFO], policy)) 1766 return NL_SKIP; 1767 if (!sinfo[NL80211_STA_INFO_SIGNAL]) 1768 return NL_SKIP; 1769 1770 sig_change->current_signal = 1771 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]); 1772 1773 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) { 1774 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX, 1775 sinfo[NL80211_STA_INFO_TX_BITRATE], 1776 rate_policy)) { 1777 sig_change->current_txrate = 0; 1778 } else { 1779 if (rinfo[NL80211_RATE_INFO_BITRATE]) { 1780 sig_change->current_txrate = 1781 nla_get_u16(rinfo[ 1782 NL80211_RATE_INFO_BITRATE]) * 100; 1783 } 1784 } 1785 } 1786 1787 return NL_SKIP; 1788} 1789 1790 1791static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv, 1792 struct wpa_signal_info *sig) 1793{ 1794 struct nl_msg *msg; 1795 1796 sig->current_signal = -9999; 1797 sig->current_txrate = 0; 1798 1799 msg = nlmsg_alloc(); 1800 if (!msg) 1801 return -ENOMEM; 1802 1803 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 1804 1805 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1806 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 1807 1808 return send_and_recv_msgs(drv, msg, get_link_signal, sig); 1809 nla_put_failure: 1810 nlmsg_free(msg); 1811 return -ENOBUFS; 1812} 1813 1814 1815static int get_link_noise(struct nl_msg *msg, void *arg) 1816{ 1817 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1818 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1819 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 1820 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 1821 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 1822 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 1823 }; 1824 struct wpa_signal_info *sig_change = arg; 1825 1826 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1827 genlmsg_attrlen(gnlh, 0), NULL); 1828 1829 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 1830 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!"); 1831 return NL_SKIP; 1832 } 1833 1834 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 1835 tb[NL80211_ATTR_SURVEY_INFO], 1836 survey_policy)) { 1837 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested " 1838 "attributes!"); 1839 return NL_SKIP; 1840 } 1841 1842 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 1843 return NL_SKIP; 1844 1845 if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 1846 sig_change->frequency) 1847 return NL_SKIP; 1848 1849 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 1850 return NL_SKIP; 1851 1852 sig_change->current_noise = 1853 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 1854 1855 return NL_SKIP; 1856} 1857 1858 1859static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv, 1860 struct wpa_signal_info *sig_change) 1861{ 1862 struct nl_msg *msg; 1863 1864 sig_change->current_noise = 9999; 1865 sig_change->frequency = drv->assoc_freq; 1866 1867 msg = nlmsg_alloc(); 1868 if (!msg) 1869 return -ENOMEM; 1870 1871 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 1872 1873 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1874 1875 return send_and_recv_msgs(drv, msg, get_link_noise, sig_change); 1876 nla_put_failure: 1877 nlmsg_free(msg); 1878 return -ENOBUFS; 1879} 1880 1881 1882static int get_noise_for_scan_results(struct nl_msg *msg, void *arg) 1883{ 1884 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1885 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1886 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 1887 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 1888 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 1889 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 1890 }; 1891 struct wpa_scan_results *scan_results = arg; 1892 struct wpa_scan_res *scan_res; 1893 size_t i; 1894 1895 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1896 genlmsg_attrlen(gnlh, 0), NULL); 1897 1898 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 1899 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing"); 1900 return NL_SKIP; 1901 } 1902 1903 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 1904 tb[NL80211_ATTR_SURVEY_INFO], 1905 survey_policy)) { 1906 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested " 1907 "attributes"); 1908 return NL_SKIP; 1909 } 1910 1911 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 1912 return NL_SKIP; 1913 1914 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 1915 return NL_SKIP; 1916 1917 for (i = 0; i < scan_results->num; ++i) { 1918 scan_res = scan_results->res[i]; 1919 if (!scan_res) 1920 continue; 1921 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 1922 scan_res->freq) 1923 continue; 1924 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID)) 1925 continue; 1926 scan_res->noise = (s8) 1927 nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 1928 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID; 1929 } 1930 1931 return NL_SKIP; 1932} 1933 1934 1935static int nl80211_get_noise_for_scan_results( 1936 struct wpa_driver_nl80211_data *drv, 1937 struct wpa_scan_results *scan_res) 1938{ 1939 struct nl_msg *msg; 1940 1941 msg = nlmsg_alloc(); 1942 if (!msg) 1943 return -ENOMEM; 1944 1945 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 1946 1947 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1948 1949 return send_and_recv_msgs(drv, msg, get_noise_for_scan_results, 1950 scan_res); 1951 nla_put_failure: 1952 nlmsg_free(msg); 1953 return -ENOBUFS; 1954} 1955 1956 1957static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv, 1958 struct nlattr *tb[]) 1959{ 1960 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 1961 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 1962 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 }, 1963 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 1964 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 }, 1965 }; 1966 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1]; 1967 enum nl80211_cqm_rssi_threshold_event event; 1968 union wpa_event_data ed; 1969 struct wpa_signal_info sig; 1970 int res; 1971 1972 if (tb[NL80211_ATTR_CQM] == NULL || 1973 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM], 1974 cqm_policy)) { 1975 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event"); 1976 return; 1977 } 1978 1979 os_memset(&ed, 0, sizeof(ed)); 1980 1981 if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) { 1982 if (!tb[NL80211_ATTR_MAC]) 1983 return; 1984 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]), 1985 ETH_ALEN); 1986 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed); 1987 return; 1988 } 1989 1990 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL) 1991 return; 1992 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]); 1993 1994 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) { 1995 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 1996 "event: RSSI high"); 1997 ed.signal_change.above_threshold = 1; 1998 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) { 1999 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 2000 "event: RSSI low"); 2001 ed.signal_change.above_threshold = 0; 2002 } else 2003 return; 2004 2005 res = nl80211_get_link_signal(drv, &sig); 2006 if (res == 0) { 2007 ed.signal_change.current_signal = sig.current_signal; 2008 ed.signal_change.current_txrate = sig.current_txrate; 2009 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm txrate: %d", 2010 sig.current_signal, sig.current_txrate); 2011 } 2012 2013 res = nl80211_get_link_noise(drv, &sig); 2014 if (res == 0) { 2015 ed.signal_change.current_noise = sig.current_noise; 2016 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm", 2017 sig.current_noise); 2018 } 2019 2020 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed); 2021} 2022 2023 2024static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv, 2025 struct nlattr **tb) 2026{ 2027 u8 *addr; 2028 union wpa_event_data data; 2029 2030 if (tb[NL80211_ATTR_MAC] == NULL) 2031 return; 2032 addr = nla_data(tb[NL80211_ATTR_MAC]); 2033 wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr)); 2034 2035 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { 2036 u8 *ies = NULL; 2037 size_t ies_len = 0; 2038 if (tb[NL80211_ATTR_IE]) { 2039 ies = nla_data(tb[NL80211_ATTR_IE]); 2040 ies_len = nla_len(tb[NL80211_ATTR_IE]); 2041 } 2042 wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len); 2043 drv_event_assoc(drv->ctx, addr, ies, ies_len, 0); 2044 return; 2045 } 2046 2047 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 2048 return; 2049 2050 os_memset(&data, 0, sizeof(data)); 2051 os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN); 2052 wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data); 2053} 2054 2055 2056static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv, 2057 struct nlattr **tb) 2058{ 2059 u8 *addr; 2060 union wpa_event_data data; 2061 2062 if (tb[NL80211_ATTR_MAC] == NULL) 2063 return; 2064 addr = nla_data(tb[NL80211_ATTR_MAC]); 2065 wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR, 2066 MAC2STR(addr)); 2067 2068 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { 2069 drv_event_disassoc(drv->ctx, addr); 2070 return; 2071 } 2072 2073 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 2074 return; 2075 2076 os_memset(&data, 0, sizeof(data)); 2077 os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN); 2078 wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data); 2079} 2080 2081 2082static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv, 2083 struct nlattr **tb) 2084{ 2085 struct nlattr *rekey_info[NUM_NL80211_REKEY_DATA]; 2086 static struct nla_policy rekey_policy[NUM_NL80211_REKEY_DATA] = { 2087 [NL80211_REKEY_DATA_KEK] = { 2088 .minlen = NL80211_KEK_LEN, 2089 .maxlen = NL80211_KEK_LEN, 2090 }, 2091 [NL80211_REKEY_DATA_KCK] = { 2092 .minlen = NL80211_KCK_LEN, 2093 .maxlen = NL80211_KCK_LEN, 2094 }, 2095 [NL80211_REKEY_DATA_REPLAY_CTR] = { 2096 .minlen = NL80211_REPLAY_CTR_LEN, 2097 .maxlen = NL80211_REPLAY_CTR_LEN, 2098 }, 2099 }; 2100 union wpa_event_data data; 2101 2102 if (!tb[NL80211_ATTR_MAC]) 2103 return; 2104 if (!tb[NL80211_ATTR_REKEY_DATA]) 2105 return; 2106 if (nla_parse_nested(rekey_info, MAX_NL80211_REKEY_DATA, 2107 tb[NL80211_ATTR_REKEY_DATA], rekey_policy)) 2108 return; 2109 if (!rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]) 2110 return; 2111 2112 os_memset(&data, 0, sizeof(data)); 2113 data.driver_gtk_rekey.bssid = nla_data(tb[NL80211_ATTR_MAC]); 2114 wpa_printf(MSG_DEBUG, "nl80211: Rekey offload event for BSSID " MACSTR, 2115 MAC2STR(data.driver_gtk_rekey.bssid)); 2116 data.driver_gtk_rekey.replay_ctr = 2117 nla_data(rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]); 2118 wpa_hexdump(MSG_DEBUG, "nl80211: Rekey offload - Replay Counter", 2119 data.driver_gtk_rekey.replay_ctr, NL80211_REPLAY_CTR_LEN); 2120 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_GTK_REKEY, &data); 2121} 2122 2123 2124static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv, 2125 struct nlattr **tb) 2126{ 2127 struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE]; 2128 static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = { 2129 [NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 }, 2130 [NL80211_PMKSA_CANDIDATE_BSSID] = { 2131 .minlen = ETH_ALEN, 2132 .maxlen = ETH_ALEN, 2133 }, 2134 [NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG }, 2135 }; 2136 union wpa_event_data data; 2137 2138 wpa_printf(MSG_DEBUG, "nl80211: PMKSA candidate event"); 2139 2140 if (!tb[NL80211_ATTR_PMKSA_CANDIDATE]) 2141 return; 2142 if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE, 2143 tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy)) 2144 return; 2145 if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] || 2146 !cand[NL80211_PMKSA_CANDIDATE_BSSID]) 2147 return; 2148 2149 os_memset(&data, 0, sizeof(data)); 2150 os_memcpy(data.pmkid_candidate.bssid, 2151 nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN); 2152 data.pmkid_candidate.index = 2153 nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]); 2154 data.pmkid_candidate.preauth = 2155 cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL; 2156 wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data); 2157} 2158 2159 2160static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv, 2161 struct nlattr **tb) 2162{ 2163 union wpa_event_data data; 2164 2165 wpa_printf(MSG_DEBUG, "nl80211: Probe client event"); 2166 2167 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_ACK]) 2168 return; 2169 2170 os_memset(&data, 0, sizeof(data)); 2171 os_memcpy(data.client_poll.addr, 2172 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2173 2174 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_CLIENT_POLL_OK, &data); 2175} 2176 2177 2178static void nl80211_tdls_oper_event(struct wpa_driver_nl80211_data *drv, 2179 struct nlattr **tb) 2180{ 2181 union wpa_event_data data; 2182 2183 wpa_printf(MSG_DEBUG, "nl80211: TDLS operation event"); 2184 2185 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_TDLS_OPERATION]) 2186 return; 2187 2188 os_memset(&data, 0, sizeof(data)); 2189 os_memcpy(data.tdls.peer, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2190 switch (nla_get_u8(tb[NL80211_ATTR_TDLS_OPERATION])) { 2191 case NL80211_TDLS_SETUP: 2192 wpa_printf(MSG_DEBUG, "nl80211: TDLS setup request for peer " 2193 MACSTR, MAC2STR(data.tdls.peer)); 2194 data.tdls.oper = TDLS_REQUEST_SETUP; 2195 break; 2196 case NL80211_TDLS_TEARDOWN: 2197 wpa_printf(MSG_DEBUG, "nl80211: TDLS teardown request for peer " 2198 MACSTR, MAC2STR(data.tdls.peer)); 2199 data.tdls.oper = TDLS_REQUEST_TEARDOWN; 2200 break; 2201 default: 2202 wpa_printf(MSG_DEBUG, "nl80211: Unsupported TDLS operatione " 2203 "event"); 2204 return; 2205 } 2206 if (tb[NL80211_ATTR_REASON_CODE]) { 2207 data.tdls.reason_code = 2208 nla_get_u16(tb[NL80211_ATTR_REASON_CODE]); 2209 } 2210 2211 wpa_supplicant_event(drv->ctx, EVENT_TDLS, &data); 2212} 2213 2214 2215static void nl80211_connect_failed_event(struct wpa_driver_nl80211_data *drv, 2216 struct nlattr **tb) 2217{ 2218 union wpa_event_data data; 2219 u32 reason; 2220 2221 wpa_printf(MSG_DEBUG, "nl80211: Connect failed event"); 2222 2223 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_CONN_FAILED_REASON]) 2224 return; 2225 2226 os_memset(&data, 0, sizeof(data)); 2227 os_memcpy(data.connect_failed_reason.addr, 2228 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2229 2230 reason = nla_get_u32(tb[NL80211_ATTR_CONN_FAILED_REASON]); 2231 switch (reason) { 2232 case NL80211_CONN_FAIL_MAX_CLIENTS: 2233 wpa_printf(MSG_DEBUG, "nl80211: Max client reached"); 2234 data.connect_failed_reason.code = MAX_CLIENT_REACHED; 2235 break; 2236 case NL80211_CONN_FAIL_BLOCKED_CLIENT: 2237 wpa_printf(MSG_DEBUG, "nl80211: Blocked client " MACSTR 2238 " tried to connect", 2239 MAC2STR(data.connect_failed_reason.addr)); 2240 data.connect_failed_reason.code = BLOCKED_CLIENT; 2241 break; 2242 default: 2243 wpa_printf(MSG_DEBUG, "nl8021l: Unknown connect failed reason " 2244 "%u", reason); 2245 return; 2246 } 2247 2248 wpa_supplicant_event(drv->ctx, EVENT_CONNECT_FAILED_REASON, &data); 2249} 2250 2251 2252static void nl80211_spurious_frame(struct i802_bss *bss, struct nlattr **tb, 2253 int wds) 2254{ 2255 struct wpa_driver_nl80211_data *drv = bss->drv; 2256 union wpa_event_data event; 2257 2258 if (!tb[NL80211_ATTR_MAC]) 2259 return; 2260 2261 os_memset(&event, 0, sizeof(event)); 2262 event.rx_from_unknown.bssid = bss->addr; 2263 event.rx_from_unknown.addr = nla_data(tb[NL80211_ATTR_MAC]); 2264 event.rx_from_unknown.wds = wds; 2265 2266 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 2267} 2268 2269 2270static void do_process_drv_event(struct i802_bss *bss, int cmd, 2271 struct nlattr **tb) 2272{ 2273 struct wpa_driver_nl80211_data *drv = bss->drv; 2274 2275 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED && 2276 (cmd == NL80211_CMD_NEW_SCAN_RESULTS || 2277 cmd == NL80211_CMD_SCAN_ABORTED)) { 2278 wpa_driver_nl80211_set_mode(&drv->first_bss, 2279 drv->ap_scan_as_station); 2280 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 2281 } 2282 2283 switch (cmd) { 2284 case NL80211_CMD_TRIGGER_SCAN: 2285 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Scan trigger"); 2286 break; 2287 case NL80211_CMD_START_SCHED_SCAN: 2288 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Sched scan started"); 2289 break; 2290 case NL80211_CMD_SCHED_SCAN_STOPPED: 2291 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Sched scan stopped"); 2292 wpa_supplicant_event(drv->ctx, EVENT_SCHED_SCAN_STOPPED, NULL); 2293 break; 2294 case NL80211_CMD_NEW_SCAN_RESULTS: 2295 wpa_dbg(drv->ctx, MSG_DEBUG, 2296 "nl80211: New scan results available"); 2297 drv->scan_complete_events = 1; 2298 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 2299 drv->ctx); 2300 send_scan_event(drv, 0, tb); 2301 break; 2302 case NL80211_CMD_SCHED_SCAN_RESULTS: 2303 wpa_dbg(drv->ctx, MSG_DEBUG, 2304 "nl80211: New sched scan results available"); 2305 send_scan_event(drv, 0, tb); 2306 break; 2307 case NL80211_CMD_SCAN_ABORTED: 2308 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Scan aborted"); 2309 /* 2310 * Need to indicate that scan results are available in order 2311 * not to make wpa_supplicant stop its scanning. 2312 */ 2313 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 2314 drv->ctx); 2315 send_scan_event(drv, 1, tb); 2316 break; 2317 case NL80211_CMD_AUTHENTICATE: 2318 case NL80211_CMD_ASSOCIATE: 2319 case NL80211_CMD_DEAUTHENTICATE: 2320 case NL80211_CMD_DISASSOCIATE: 2321 case NL80211_CMD_FRAME_TX_STATUS: 2322 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 2323 case NL80211_CMD_UNPROT_DISASSOCIATE: 2324 mlme_event(bss, cmd, tb[NL80211_ATTR_FRAME], 2325 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 2326 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 2327 tb[NL80211_ATTR_COOKIE], 2328 tb[NL80211_ATTR_RX_SIGNAL_DBM]); 2329 break; 2330 case NL80211_CMD_CONNECT: 2331 case NL80211_CMD_ROAM: 2332 mlme_event_connect(drv, cmd, 2333 tb[NL80211_ATTR_STATUS_CODE], 2334 tb[NL80211_ATTR_MAC], 2335 tb[NL80211_ATTR_REQ_IE], 2336 tb[NL80211_ATTR_RESP_IE]); 2337 break; 2338 case NL80211_CMD_CH_SWITCH_NOTIFY: 2339 mlme_event_ch_switch(drv, tb[NL80211_ATTR_WIPHY_FREQ], 2340 tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 2341 break; 2342 case NL80211_CMD_DISCONNECT: 2343 mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE], 2344 tb[NL80211_ATTR_MAC], 2345 tb[NL80211_ATTR_DISCONNECTED_BY_AP]); 2346 break; 2347 case NL80211_CMD_MICHAEL_MIC_FAILURE: 2348 mlme_event_michael_mic_failure(bss, tb); 2349 break; 2350 case NL80211_CMD_JOIN_IBSS: 2351 mlme_event_join_ibss(drv, tb); 2352 break; 2353 case NL80211_CMD_REMAIN_ON_CHANNEL: 2354 mlme_event_remain_on_channel(drv, 0, tb); 2355 break; 2356 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL: 2357 mlme_event_remain_on_channel(drv, 1, tb); 2358 break; 2359 case NL80211_CMD_NOTIFY_CQM: 2360 nl80211_cqm_event(drv, tb); 2361 break; 2362 case NL80211_CMD_REG_CHANGE: 2363 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change"); 2364 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 2365 NULL); 2366 break; 2367 case NL80211_CMD_REG_BEACON_HINT: 2368 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint"); 2369 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 2370 NULL); 2371 break; 2372 case NL80211_CMD_NEW_STATION: 2373 nl80211_new_station_event(drv, tb); 2374 break; 2375 case NL80211_CMD_DEL_STATION: 2376 nl80211_del_station_event(drv, tb); 2377 break; 2378 case NL80211_CMD_SET_REKEY_OFFLOAD: 2379 nl80211_rekey_offload_event(drv, tb); 2380 break; 2381 case NL80211_CMD_PMKSA_CANDIDATE: 2382 nl80211_pmksa_candidate_event(drv, tb); 2383 break; 2384 case NL80211_CMD_PROBE_CLIENT: 2385 nl80211_client_probe_event(drv, tb); 2386 break; 2387 case NL80211_CMD_TDLS_OPER: 2388 nl80211_tdls_oper_event(drv, tb); 2389 break; 2390 case NL80211_CMD_CONN_FAILED: 2391 nl80211_connect_failed_event(drv, tb); 2392 break; 2393 case NL80211_CMD_FT_EVENT: 2394 mlme_event_ft_event(drv, tb); 2395 break; 2396 default: 2397 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Ignored unknown event " 2398 "(cmd=%d)", cmd); 2399 break; 2400 } 2401} 2402 2403 2404static int process_drv_event(struct nl_msg *msg, void *arg) 2405{ 2406 struct wpa_driver_nl80211_data *drv = arg; 2407 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2408 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2409 struct i802_bss *bss; 2410 int ifidx = -1; 2411 2412 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2413 genlmsg_attrlen(gnlh, 0), NULL); 2414 2415 if (tb[NL80211_ATTR_IFINDEX]) 2416 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2417 2418 for (bss = &drv->first_bss; bss; bss = bss->next) { 2419 if (ifidx == -1 || ifidx == bss->ifindex) { 2420 do_process_drv_event(bss, gnlh->cmd, tb); 2421 return NL_SKIP; 2422 } 2423 } 2424 2425 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d) for foreign " 2426 "interface (ifindex %d)", gnlh->cmd, ifidx); 2427 2428 return NL_SKIP; 2429} 2430 2431 2432static int process_global_event(struct nl_msg *msg, void *arg) 2433{ 2434 struct nl80211_global *global = arg; 2435 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2436 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2437 struct wpa_driver_nl80211_data *drv, *tmp; 2438 int ifidx = -1; 2439 struct i802_bss *bss; 2440 2441 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2442 genlmsg_attrlen(gnlh, 0), NULL); 2443 2444 if (tb[NL80211_ATTR_IFINDEX]) 2445 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2446 2447 dl_list_for_each_safe(drv, tmp, &global->interfaces, 2448 struct wpa_driver_nl80211_data, list) { 2449 for (bss = &drv->first_bss; bss; bss = bss->next) { 2450 if (ifidx == -1 || ifidx == bss->ifindex) { 2451 do_process_drv_event(bss, gnlh->cmd, tb); 2452 return NL_SKIP; 2453 } 2454 } 2455 } 2456 2457 return NL_SKIP; 2458} 2459 2460 2461static int process_bss_event(struct nl_msg *msg, void *arg) 2462{ 2463 struct i802_bss *bss = arg; 2464 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2465 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2466 2467 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2468 genlmsg_attrlen(gnlh, 0), NULL); 2469 2470 switch (gnlh->cmd) { 2471 case NL80211_CMD_FRAME: 2472 case NL80211_CMD_FRAME_TX_STATUS: 2473 mlme_event(bss, gnlh->cmd, tb[NL80211_ATTR_FRAME], 2474 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 2475 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 2476 tb[NL80211_ATTR_COOKIE], 2477 tb[NL80211_ATTR_RX_SIGNAL_DBM]); 2478 break; 2479 case NL80211_CMD_UNEXPECTED_FRAME: 2480 nl80211_spurious_frame(bss, tb, 0); 2481 break; 2482 case NL80211_CMD_UNEXPECTED_4ADDR_FRAME: 2483 nl80211_spurious_frame(bss, tb, 1); 2484 break; 2485 default: 2486 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event " 2487 "(cmd=%d)", gnlh->cmd); 2488 break; 2489 } 2490 2491 return NL_SKIP; 2492} 2493 2494 2495static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx, 2496 void *handle) 2497{ 2498 struct nl_cb *cb = eloop_ctx; 2499 2500 wpa_printf(MSG_MSGDUMP, "nl80211: Event message available"); 2501 2502 nl_recvmsgs(handle, cb); 2503} 2504 2505 2506/** 2507 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain 2508 * @priv: driver_nl80211 private data 2509 * @alpha2_arg: country to which to switch to 2510 * Returns: 0 on success, -1 on failure 2511 * 2512 * This asks nl80211 to set the regulatory domain for given 2513 * country ISO / IEC alpha2. 2514 */ 2515static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg) 2516{ 2517 struct i802_bss *bss = priv; 2518 struct wpa_driver_nl80211_data *drv = bss->drv; 2519 char alpha2[3]; 2520 struct nl_msg *msg; 2521 2522 msg = nlmsg_alloc(); 2523 if (!msg) 2524 return -ENOMEM; 2525 2526 alpha2[0] = alpha2_arg[0]; 2527 alpha2[1] = alpha2_arg[1]; 2528 alpha2[2] = '\0'; 2529 2530 nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG); 2531 2532 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2); 2533 if (send_and_recv_msgs(drv, msg, NULL, NULL)) 2534 return -EINVAL; 2535 return 0; 2536nla_put_failure: 2537 nlmsg_free(msg); 2538 return -EINVAL; 2539} 2540 2541 2542static int protocol_feature_handler(struct nl_msg *msg, void *arg) 2543{ 2544 u32 *feat = arg; 2545 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 2546 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2547 2548 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2549 genlmsg_attrlen(gnlh, 0), NULL); 2550 2551 if (tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]) 2552 *feat = nla_get_u32(tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]); 2553 2554 return NL_SKIP; 2555} 2556 2557 2558static u32 get_nl80211_protocol_features(struct wpa_driver_nl80211_data *drv) 2559{ 2560 u32 feat = 0; 2561 struct nl_msg *msg; 2562 2563 msg = nlmsg_alloc(); 2564 if (!msg) 2565 goto nla_put_failure; 2566 2567 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_PROTOCOL_FEATURES); 2568 if (send_and_recv_msgs(drv, msg, protocol_feature_handler, &feat) == 0) 2569 return feat; 2570 2571 msg = NULL; 2572nla_put_failure: 2573 nlmsg_free(msg); 2574 return 0; 2575} 2576 2577 2578struct wiphy_info_data { 2579 struct wpa_driver_nl80211_data *drv; 2580 struct wpa_driver_capa *capa; 2581 2582 unsigned int error:1; 2583 unsigned int device_ap_sme:1; 2584 unsigned int poll_command_supported:1; 2585 unsigned int data_tx_status:1; 2586 unsigned int monitor_supported:1; 2587 unsigned int auth_supported:1; 2588 unsigned int connect_supported:1; 2589 unsigned int p2p_go_supported:1; 2590 unsigned int p2p_client_supported:1; 2591 unsigned int p2p_concurrent:1; 2592 unsigned int p2p_multichan_concurrent:1; 2593}; 2594 2595 2596static unsigned int probe_resp_offload_support(int supp_protocols) 2597{ 2598 unsigned int prot = 0; 2599 2600 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS) 2601 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS; 2602 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2) 2603 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2; 2604 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P) 2605 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P; 2606 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U) 2607 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING; 2608 2609 return prot; 2610} 2611 2612 2613static void wiphy_info_supported_iftypes(struct wiphy_info_data *info, 2614 struct nlattr *tb) 2615{ 2616 struct nlattr *nl_mode; 2617 int i; 2618 2619 if (tb == NULL) 2620 return; 2621 2622 nla_for_each_nested(nl_mode, tb, i) { 2623 switch (nla_type(nl_mode)) { 2624 case NL80211_IFTYPE_AP: 2625 info->capa->flags |= WPA_DRIVER_FLAGS_AP; 2626 break; 2627 case NL80211_IFTYPE_ADHOC: 2628 info->capa->flags |= WPA_DRIVER_FLAGS_IBSS; 2629 break; 2630 case NL80211_IFTYPE_P2P_GO: 2631 info->p2p_go_supported = 1; 2632 break; 2633 case NL80211_IFTYPE_P2P_CLIENT: 2634 info->p2p_client_supported = 1; 2635 break; 2636 case NL80211_IFTYPE_MONITOR: 2637 info->monitor_supported = 1; 2638 break; 2639 } 2640 } 2641} 2642 2643 2644static int wiphy_info_iface_comb_process(struct wiphy_info_data *info, 2645 struct nlattr *nl_combi) 2646{ 2647 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB]; 2648 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT]; 2649 struct nlattr *nl_limit, *nl_mode; 2650 int err, rem_limit, rem_mode; 2651 int combination_has_p2p = 0, combination_has_mgd = 0; 2652 static struct nla_policy 2653 iface_combination_policy[NUM_NL80211_IFACE_COMB] = { 2654 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED }, 2655 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 }, 2656 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG }, 2657 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 }, 2658 }, 2659 iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = { 2660 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED }, 2661 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 }, 2662 }; 2663 2664 err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB, 2665 nl_combi, iface_combination_policy); 2666 if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] || 2667 !tb_comb[NL80211_IFACE_COMB_MAXNUM] || 2668 !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) 2669 return 0; /* broken combination */ 2670 2671 nla_for_each_nested(nl_limit, tb_comb[NL80211_IFACE_COMB_LIMITS], 2672 rem_limit) { 2673 err = nla_parse_nested(tb_limit, MAX_NL80211_IFACE_LIMIT, 2674 nl_limit, iface_limit_policy); 2675 if (err || !tb_limit[NL80211_IFACE_LIMIT_TYPES]) 2676 return 0; /* broken combination */ 2677 2678 nla_for_each_nested(nl_mode, 2679 tb_limit[NL80211_IFACE_LIMIT_TYPES], 2680 rem_mode) { 2681 int ift = nla_type(nl_mode); 2682 if (ift == NL80211_IFTYPE_P2P_GO || 2683 ift == NL80211_IFTYPE_P2P_CLIENT) 2684 combination_has_p2p = 1; 2685 if (ift == NL80211_IFTYPE_STATION) 2686 combination_has_mgd = 1; 2687 } 2688 if (combination_has_p2p && combination_has_mgd) 2689 break; 2690 } 2691 2692 if (combination_has_p2p && combination_has_mgd) { 2693 info->p2p_concurrent = 1; 2694 if (nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) > 1) 2695 info->p2p_multichan_concurrent = 1; 2696 return 1; 2697 } 2698 2699 return 0; 2700} 2701 2702 2703static void wiphy_info_iface_comb(struct wiphy_info_data *info, 2704 struct nlattr *tb) 2705{ 2706 struct nlattr *nl_combi; 2707 int rem_combi; 2708 2709 if (tb == NULL) 2710 return; 2711 2712 nla_for_each_nested(nl_combi, tb, rem_combi) { 2713 if (wiphy_info_iface_comb_process(info, nl_combi) > 0) 2714 break; 2715 } 2716} 2717 2718 2719static void wiphy_info_supp_cmds(struct wiphy_info_data *info, 2720 struct nlattr *tb) 2721{ 2722 struct nlattr *nl_cmd; 2723 int i; 2724 2725 if (tb == NULL) 2726 return; 2727 2728 nla_for_each_nested(nl_cmd, tb, i) { 2729 switch (nla_get_u32(nl_cmd)) { 2730 case NL80211_CMD_AUTHENTICATE: 2731 info->auth_supported = 1; 2732 break; 2733 case NL80211_CMD_CONNECT: 2734 info->connect_supported = 1; 2735 break; 2736 case NL80211_CMD_START_SCHED_SCAN: 2737 info->capa->sched_scan_supported = 1; 2738 break; 2739 case NL80211_CMD_PROBE_CLIENT: 2740 info->poll_command_supported = 1; 2741 break; 2742 } 2743 } 2744} 2745 2746 2747static void wiphy_info_max_roc(struct wpa_driver_capa *capa, 2748 struct nlattr *tb) 2749{ 2750 /* default to 5000 since early versions of mac80211 don't set it */ 2751 capa->max_remain_on_chan = 5000; 2752 2753 if (tb) 2754 capa->max_remain_on_chan = nla_get_u32(tb); 2755} 2756 2757 2758static void wiphy_info_tdls(struct wpa_driver_capa *capa, struct nlattr *tdls, 2759 struct nlattr *ext_setup) 2760{ 2761 if (tdls == NULL) 2762 return; 2763 2764 wpa_printf(MSG_DEBUG, "nl80211: TDLS supported"); 2765 capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT; 2766 2767 if (ext_setup) { 2768 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup"); 2769 capa->flags |= WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP; 2770 } 2771} 2772 2773 2774static void wiphy_info_feature_flags(struct wiphy_info_data *info, 2775 struct nlattr *tb) 2776{ 2777 u32 flags; 2778 struct wpa_driver_capa *capa = info->capa; 2779 2780 if (tb == NULL) 2781 return; 2782 2783 flags = nla_get_u32(tb); 2784 2785 if (flags & NL80211_FEATURE_SK_TX_STATUS) 2786 info->data_tx_status = 1; 2787 2788 if (flags & NL80211_FEATURE_INACTIVITY_TIMER) 2789 capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER; 2790 2791 if (flags & NL80211_FEATURE_SAE) 2792 capa->flags |= WPA_DRIVER_FLAGS_SAE; 2793 2794 if (flags & NL80211_FEATURE_NEED_OBSS_SCAN) 2795 capa->flags |= WPA_DRIVER_FLAGS_OBSS_SCAN; 2796} 2797 2798 2799static void wiphy_info_probe_resp_offload(struct wpa_driver_capa *capa, 2800 struct nlattr *tb) 2801{ 2802 u32 protocols; 2803 2804 if (tb == NULL) 2805 return; 2806 2807 protocols = nla_get_u32(tb); 2808 wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response offload in AP " 2809 "mode"); 2810 capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD; 2811 capa->probe_resp_offloads = probe_resp_offload_support(protocols); 2812} 2813 2814 2815static int wiphy_info_handler(struct nl_msg *msg, void *arg) 2816{ 2817 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2818 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2819 struct wiphy_info_data *info = arg; 2820 struct wpa_driver_capa *capa = info->capa; 2821 struct wpa_driver_nl80211_data *drv = info->drv; 2822 2823 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2824 genlmsg_attrlen(gnlh, 0), NULL); 2825 2826 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]) 2827 capa->max_scan_ssids = 2828 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]); 2829 2830 if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]) 2831 capa->max_sched_scan_ssids = 2832 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]); 2833 2834 if (tb[NL80211_ATTR_MAX_MATCH_SETS]) 2835 capa->max_match_sets = 2836 nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]); 2837 2838 wiphy_info_supported_iftypes(info, tb[NL80211_ATTR_SUPPORTED_IFTYPES]); 2839 wiphy_info_iface_comb(info, tb[NL80211_ATTR_INTERFACE_COMBINATIONS]); 2840 wiphy_info_supp_cmds(info, tb[NL80211_ATTR_SUPPORTED_COMMANDS]); 2841 2842 if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) { 2843 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based " 2844 "off-channel TX"); 2845 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX; 2846 } 2847 2848 if (tb[NL80211_ATTR_ROAM_SUPPORT]) { 2849 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming"); 2850 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION; 2851 } 2852 2853 wiphy_info_max_roc(capa, 2854 tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]); 2855 2856 if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD]) 2857 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD; 2858 2859 wiphy_info_tdls(capa, tb[NL80211_ATTR_TDLS_SUPPORT], 2860 tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]); 2861 2862 if (tb[NL80211_ATTR_DEVICE_AP_SME]) 2863 info->device_ap_sme = 1; 2864 2865 wiphy_info_feature_flags(info, tb[NL80211_ATTR_FEATURE_FLAGS]); 2866 wiphy_info_probe_resp_offload(capa, 2867 tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]); 2868 2869 if (tb[NL80211_ATTR_EXT_CAPA] && tb[NL80211_ATTR_EXT_CAPA_MASK] && 2870 drv->extended_capa == NULL) { 2871 drv->extended_capa = 2872 os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA])); 2873 if (drv->extended_capa) { 2874 os_memcpy(drv->extended_capa, 2875 nla_data(tb[NL80211_ATTR_EXT_CAPA]), 2876 nla_len(tb[NL80211_ATTR_EXT_CAPA])); 2877 drv->extended_capa_len = 2878 nla_len(tb[NL80211_ATTR_EXT_CAPA]); 2879 } 2880 drv->extended_capa_mask = 2881 os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA])); 2882 if (drv->extended_capa_mask) { 2883 os_memcpy(drv->extended_capa_mask, 2884 nla_data(tb[NL80211_ATTR_EXT_CAPA]), 2885 nla_len(tb[NL80211_ATTR_EXT_CAPA])); 2886 } else { 2887 os_free(drv->extended_capa); 2888 drv->extended_capa = NULL; 2889 drv->extended_capa_len = 0; 2890 } 2891 } 2892 2893 return NL_SKIP; 2894} 2895 2896 2897static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv, 2898 struct wiphy_info_data *info) 2899{ 2900 u32 feat; 2901 struct nl_msg *msg; 2902 2903 os_memset(info, 0, sizeof(*info)); 2904 info->capa = &drv->capa; 2905 info->drv = drv; 2906 2907 msg = nlmsg_alloc(); 2908 if (!msg) 2909 return -1; 2910 2911 feat = get_nl80211_protocol_features(drv); 2912 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) 2913 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_WIPHY); 2914 else 2915 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 2916 2917 NLA_PUT_FLAG(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP); 2918 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex); 2919 2920 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info)) 2921 return -1; 2922 2923 if (info->auth_supported) 2924 drv->capa.flags |= WPA_DRIVER_FLAGS_SME; 2925 else if (!info->connect_supported) { 2926 wpa_printf(MSG_INFO, "nl80211: Driver does not support " 2927 "authentication/association or connect commands"); 2928 info->error = 1; 2929 } 2930 2931 if (info->p2p_go_supported && info->p2p_client_supported) 2932 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE; 2933 if (info->p2p_concurrent) { 2934 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 2935 "interface (driver advertised support)"); 2936 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 2937 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 2938 } 2939 if (info->p2p_multichan_concurrent) { 2940 wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel " 2941 "concurrent (driver advertised support)"); 2942 drv->capa.flags |= WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT; 2943 } 2944 return 0; 2945nla_put_failure: 2946 nlmsg_free(msg); 2947 return -1; 2948} 2949 2950 2951static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv) 2952{ 2953 struct wiphy_info_data info; 2954 if (wpa_driver_nl80211_get_info(drv, &info)) 2955 return -1; 2956 2957 if (info.error) 2958 return -1; 2959 2960 drv->has_capability = 1; 2961 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */ 2962 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA | 2963 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK | 2964 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | 2965 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK; 2966 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 | 2967 WPA_DRIVER_CAPA_ENC_WEP104 | 2968 WPA_DRIVER_CAPA_ENC_TKIP | 2969 WPA_DRIVER_CAPA_ENC_CCMP; 2970 drv->capa.auth = WPA_DRIVER_AUTH_OPEN | 2971 WPA_DRIVER_AUTH_SHARED | 2972 WPA_DRIVER_AUTH_LEAP; 2973 2974 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES; 2975 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE; 2976 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 2977 2978 if (!info.device_ap_sme) { 2979 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS; 2980 2981 /* 2982 * No AP SME is currently assumed to also indicate no AP MLME 2983 * in the driver/firmware. 2984 */ 2985 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME; 2986 } 2987 2988 drv->device_ap_sme = info.device_ap_sme; 2989 drv->poll_command_supported = info.poll_command_supported; 2990 drv->data_tx_status = info.data_tx_status; 2991 2992#ifdef ANDROID_P2P 2993 if(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) { 2994 /* Driver is new enough to support monitorless mode*/ 2995 wpa_printf(MSG_DEBUG, "nl80211: Driver is new " 2996 "enough to support monitor-less mode"); 2997 drv->use_monitor = 0; 2998 } 2999#else 3000 /* 3001 * If poll command and tx status are supported, mac80211 is new enough 3002 * to have everything we need to not need monitor interfaces. 3003 */ 3004 drv->use_monitor = !info.poll_command_supported || !info.data_tx_status; 3005#endif 3006 3007 if (drv->device_ap_sme && drv->use_monitor) { 3008 /* 3009 * Non-mac80211 drivers may not support monitor interface. 3010 * Make sure we do not get stuck with incorrect capability here 3011 * by explicitly testing this. 3012 */ 3013 if (!info.monitor_supported) { 3014 wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor " 3015 "with device_ap_sme since no monitor mode " 3016 "support detected"); 3017 drv->use_monitor = 0; 3018 } 3019 } 3020 3021 /* 3022 * If we aren't going to use monitor interfaces, but the 3023 * driver doesn't support data TX status, we won't get TX 3024 * status for EAPOL frames. 3025 */ 3026 if (!drv->use_monitor && !info.data_tx_status) 3027 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 3028 3029 return 0; 3030} 3031 3032 3033#ifdef ANDROID 3034static int android_genl_ctrl_resolve(struct nl_handle *handle, 3035 const char *name) 3036{ 3037 /* 3038 * Android ICS has very minimal genl_ctrl_resolve() implementation, so 3039 * need to work around that. 3040 */ 3041 struct nl_cache *cache = NULL; 3042 struct genl_family *nl80211 = NULL; 3043 int id = -1; 3044 3045 if (genl_ctrl_alloc_cache(handle, &cache) < 0) { 3046 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic " 3047 "netlink cache"); 3048 goto fail; 3049 } 3050 3051 nl80211 = genl_ctrl_search_by_name(cache, name); 3052 if (nl80211 == NULL) 3053 goto fail; 3054 3055 id = genl_family_get_id(nl80211); 3056 3057fail: 3058 if (nl80211) 3059 genl_family_put(nl80211); 3060 if (cache) 3061 nl_cache_free(cache); 3062 3063 return id; 3064} 3065#define genl_ctrl_resolve android_genl_ctrl_resolve 3066#endif /* ANDROID */ 3067 3068 3069static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global) 3070{ 3071 int ret; 3072 3073 global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 3074 if (global->nl_cb == NULL) { 3075 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 3076 "callbacks"); 3077 return -1; 3078 } 3079 3080 global->nl = nl_create_handle(global->nl_cb, "nl"); 3081 if (global->nl == NULL) 3082 goto err; 3083 3084 global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211"); 3085 if (global->nl80211_id < 0) { 3086 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not " 3087 "found"); 3088 goto err; 3089 } 3090 3091 global->nl_event = nl_create_handle(global->nl_cb, "event"); 3092 if (global->nl_event == NULL) 3093 goto err; 3094 3095 ret = nl_get_multicast_id(global, "nl80211", "scan"); 3096 if (ret >= 0) 3097 ret = nl_socket_add_membership(global->nl_event, ret); 3098 if (ret < 0) { 3099 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 3100 "membership for scan events: %d (%s)", 3101 ret, strerror(-ret)); 3102 goto err; 3103 } 3104 3105 ret = nl_get_multicast_id(global, "nl80211", "mlme"); 3106 if (ret >= 0) 3107 ret = nl_socket_add_membership(global->nl_event, ret); 3108 if (ret < 0) { 3109 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 3110 "membership for mlme events: %d (%s)", 3111 ret, strerror(-ret)); 3112 goto err; 3113 } 3114 3115 ret = nl_get_multicast_id(global, "nl80211", "regulatory"); 3116 if (ret >= 0) 3117 ret = nl_socket_add_membership(global->nl_event, ret); 3118 if (ret < 0) { 3119 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast " 3120 "membership for regulatory events: %d (%s)", 3121 ret, strerror(-ret)); 3122 /* Continue without regulatory events */ 3123 } 3124 3125 nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 3126 no_seq_check, NULL); 3127 nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 3128 process_global_event, global); 3129 3130 eloop_register_read_sock(nl_socket_get_fd(global->nl_event), 3131 wpa_driver_nl80211_event_receive, 3132 global->nl_cb, global->nl_event); 3133 3134 return 0; 3135 3136err: 3137 nl_destroy_handles(&global->nl_event); 3138 nl_destroy_handles(&global->nl); 3139 nl_cb_put(global->nl_cb); 3140 global->nl_cb = NULL; 3141 return -1; 3142} 3143 3144 3145static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv) 3146{ 3147 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 3148 if (!drv->nl_cb) { 3149 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct"); 3150 return -1; 3151 } 3152 3153 nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 3154 no_seq_check, NULL); 3155 nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 3156 process_drv_event, drv); 3157 3158 return 0; 3159} 3160 3161 3162static void wpa_driver_nl80211_rfkill_blocked(void *ctx) 3163{ 3164 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked"); 3165 /* 3166 * This may be for any interface; use ifdown event to disable 3167 * interface. 3168 */ 3169} 3170 3171 3172static void wpa_driver_nl80211_rfkill_unblocked(void *ctx) 3173{ 3174 struct wpa_driver_nl80211_data *drv = ctx; 3175 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked"); 3176 if (linux_set_iface_flags(drv->global->ioctl_sock, 3177 drv->first_bss.ifname, 1)) { 3178 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP " 3179 "after rfkill unblock"); 3180 return; 3181 } 3182 /* rtnetlink ifup handler will report interface as enabled */ 3183} 3184 3185 3186static void nl80211_get_phy_name(struct wpa_driver_nl80211_data *drv) 3187{ 3188 /* Find phy (radio) to which this interface belongs */ 3189 char buf[90], *pos; 3190 int f, rv; 3191 3192 drv->phyname[0] = '\0'; 3193 snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name", 3194 drv->first_bss.ifname); 3195 f = open(buf, O_RDONLY); 3196 if (f < 0) { 3197 wpa_printf(MSG_DEBUG, "Could not open file %s: %s", 3198 buf, strerror(errno)); 3199 return; 3200 } 3201 3202 rv = read(f, drv->phyname, sizeof(drv->phyname) - 1); 3203 close(f); 3204 if (rv < 0) { 3205 wpa_printf(MSG_DEBUG, "Could not read file %s: %s", 3206 buf, strerror(errno)); 3207 return; 3208 } 3209 3210 drv->phyname[rv] = '\0'; 3211 pos = os_strchr(drv->phyname, '\n'); 3212 if (pos) 3213 *pos = '\0'; 3214 wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s", 3215 drv->first_bss.ifname, drv->phyname); 3216} 3217 3218 3219static void wpa_driver_nl80211_handle_eapol_tx_status(int sock, 3220 void *eloop_ctx, 3221 void *handle) 3222{ 3223 struct wpa_driver_nl80211_data *drv = eloop_ctx; 3224 u8 data[2048]; 3225 struct msghdr msg; 3226 struct iovec entry; 3227 u8 control[512]; 3228 struct cmsghdr *cmsg; 3229 int res, found_ee = 0, found_wifi = 0, acked = 0; 3230 union wpa_event_data event; 3231 3232 memset(&msg, 0, sizeof(msg)); 3233 msg.msg_iov = &entry; 3234 msg.msg_iovlen = 1; 3235 entry.iov_base = data; 3236 entry.iov_len = sizeof(data); 3237 msg.msg_control = &control; 3238 msg.msg_controllen = sizeof(control); 3239 3240 res = recvmsg(sock, &msg, MSG_ERRQUEUE); 3241 /* if error or not fitting 802.3 header, return */ 3242 if (res < 14) 3243 return; 3244 3245 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) 3246 { 3247 if (cmsg->cmsg_level == SOL_SOCKET && 3248 cmsg->cmsg_type == SCM_WIFI_STATUS) { 3249 int *ack; 3250 3251 found_wifi = 1; 3252 ack = (void *)CMSG_DATA(cmsg); 3253 acked = *ack; 3254 } 3255 3256 if (cmsg->cmsg_level == SOL_PACKET && 3257 cmsg->cmsg_type == PACKET_TX_TIMESTAMP) { 3258 struct sock_extended_err *err = 3259 (struct sock_extended_err *)CMSG_DATA(cmsg); 3260 3261 if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS) 3262 found_ee = 1; 3263 } 3264 } 3265 3266 if (!found_ee || !found_wifi) 3267 return; 3268 3269 memset(&event, 0, sizeof(event)); 3270 event.eapol_tx_status.dst = data; 3271 event.eapol_tx_status.data = data + 14; 3272 event.eapol_tx_status.data_len = res - 14; 3273 event.eapol_tx_status.ack = acked; 3274 wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event); 3275} 3276 3277 3278static int nl80211_init_bss(struct i802_bss *bss) 3279{ 3280 bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 3281 if (!bss->nl_cb) 3282 return -1; 3283 3284 nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 3285 no_seq_check, NULL); 3286 nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 3287 process_bss_event, bss); 3288 3289 return 0; 3290} 3291 3292 3293static void nl80211_destroy_bss(struct i802_bss *bss) 3294{ 3295 nl_cb_put(bss->nl_cb); 3296 bss->nl_cb = NULL; 3297} 3298 3299 3300/** 3301 * wpa_driver_nl80211_init - Initialize nl80211 driver interface 3302 * @ctx: context to be used when calling wpa_supplicant functions, 3303 * e.g., wpa_supplicant_event() 3304 * @ifname: interface name, e.g., wlan0 3305 * @global_priv: private driver global data from global_init() 3306 * Returns: Pointer to private data, %NULL on failure 3307 */ 3308static void * wpa_driver_nl80211_init(void *ctx, const char *ifname, 3309 void *global_priv) 3310{ 3311 struct wpa_driver_nl80211_data *drv; 3312 struct rfkill_config *rcfg; 3313 struct i802_bss *bss; 3314 3315 if (global_priv == NULL) 3316 return NULL; 3317 drv = os_zalloc(sizeof(*drv)); 3318 if (drv == NULL) 3319 return NULL; 3320 drv->global = global_priv; 3321 drv->ctx = ctx; 3322 bss = &drv->first_bss; 3323 bss->drv = drv; 3324 bss->ctx = ctx; 3325 3326 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname)); 3327 drv->monitor_ifidx = -1; 3328 drv->monitor_sock = -1; 3329 drv->eapol_tx_sock = -1; 3330 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 3331 3332 if (wpa_driver_nl80211_init_nl(drv)) { 3333 os_free(drv); 3334 return NULL; 3335 } 3336 3337 if (nl80211_init_bss(bss)) 3338 goto failed; 3339 3340 nl80211_get_phy_name(drv); 3341 3342 rcfg = os_zalloc(sizeof(*rcfg)); 3343 if (rcfg == NULL) 3344 goto failed; 3345 rcfg->ctx = drv; 3346 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname)); 3347 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked; 3348 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked; 3349 drv->rfkill = rfkill_init(rcfg); 3350 if (drv->rfkill == NULL) { 3351 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available"); 3352 os_free(rcfg); 3353 } 3354 3355 if (wpa_driver_nl80211_finish_drv_init(drv)) 3356 goto failed; 3357 3358 drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0); 3359 if (drv->eapol_tx_sock < 0) 3360 goto failed; 3361 3362 if (drv->data_tx_status) { 3363 int enabled = 1; 3364 3365 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS, 3366 &enabled, sizeof(enabled)) < 0) { 3367 wpa_printf(MSG_DEBUG, 3368 "nl80211: wifi status sockopt failed\n"); 3369 drv->data_tx_status = 0; 3370 if (!drv->use_monitor) 3371 drv->capa.flags &= 3372 ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 3373 } else { 3374 eloop_register_read_sock(drv->eapol_tx_sock, 3375 wpa_driver_nl80211_handle_eapol_tx_status, 3376 drv, NULL); 3377 } 3378 } 3379 3380 if (drv->global) { 3381 dl_list_add(&drv->global->interfaces, &drv->list); 3382 drv->in_interface_list = 1; 3383 } 3384 3385 return bss; 3386 3387failed: 3388 wpa_driver_nl80211_deinit(bss); 3389 return NULL; 3390} 3391 3392 3393static int nl80211_register_frame(struct i802_bss *bss, 3394 struct nl_handle *nl_handle, 3395 u16 type, const u8 *match, size_t match_len) 3396{ 3397 struct wpa_driver_nl80211_data *drv = bss->drv; 3398 struct nl_msg *msg; 3399 int ret = -1; 3400 3401 msg = nlmsg_alloc(); 3402 if (!msg) 3403 return -1; 3404 3405 wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x nl_handle=%p", 3406 type, nl_handle); 3407 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 3408 match, match_len); 3409 3410 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION); 3411 3412 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 3413 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type); 3414 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match); 3415 3416 ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL); 3417 msg = NULL; 3418 if (ret) { 3419 wpa_printf(MSG_DEBUG, "nl80211: Register frame command " 3420 "failed (type=%u): ret=%d (%s)", 3421 type, ret, strerror(-ret)); 3422 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 3423 match, match_len); 3424 goto nla_put_failure; 3425 } 3426 ret = 0; 3427nla_put_failure: 3428 nlmsg_free(msg); 3429 return ret; 3430} 3431 3432 3433static int nl80211_alloc_mgmt_handle(struct i802_bss *bss) 3434{ 3435 struct wpa_driver_nl80211_data *drv = bss->drv; 3436 3437 if (bss->nl_mgmt) { 3438 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting " 3439 "already on! (nl_mgmt=%p)", bss->nl_mgmt); 3440 return -1; 3441 } 3442 3443 bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt"); 3444 if (bss->nl_mgmt == NULL) 3445 return -1; 3446 3447 eloop_register_read_sock(nl_socket_get_fd(bss->nl_mgmt), 3448 wpa_driver_nl80211_event_receive, bss->nl_cb, 3449 bss->nl_mgmt); 3450 3451 return 0; 3452} 3453 3454 3455static int nl80211_register_action_frame(struct i802_bss *bss, 3456 const u8 *match, size_t match_len) 3457{ 3458 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4); 3459 return nl80211_register_frame(bss, bss->nl_mgmt, 3460 type, match, match_len); 3461} 3462 3463 3464static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss) 3465{ 3466 struct wpa_driver_nl80211_data *drv = bss->drv; 3467 3468 if (nl80211_alloc_mgmt_handle(bss)) 3469 return -1; 3470 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP " 3471 "handle %p", bss->nl_mgmt); 3472 3473#if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING) 3474 /* GAS Initial Request */ 3475 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0) 3476 return -1; 3477 /* GAS Initial Response */ 3478 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0) 3479 return -1; 3480 /* GAS Comeback Request */ 3481 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0) 3482 return -1; 3483 /* GAS Comeback Response */ 3484 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0) 3485 return -1; 3486#endif /* CONFIG_P2P || CONFIG_INTERWORKING */ 3487#ifdef CONFIG_P2P 3488 /* P2P Public Action */ 3489 if (nl80211_register_action_frame(bss, 3490 (u8 *) "\x04\x09\x50\x6f\x9a\x09", 3491 6) < 0) 3492 return -1; 3493 /* P2P Action */ 3494 if (nl80211_register_action_frame(bss, 3495 (u8 *) "\x7f\x50\x6f\x9a\x09", 3496 5) < 0) 3497 return -1; 3498#endif /* CONFIG_P2P */ 3499#ifdef CONFIG_IEEE80211W 3500 /* SA Query Response */ 3501 if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0) 3502 return -1; 3503#endif /* CONFIG_IEEE80211W */ 3504#ifdef CONFIG_TDLS 3505 if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) { 3506 /* TDLS Discovery Response */ 3507 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) < 3508 0) 3509 return -1; 3510 } 3511#endif /* CONFIG_TDLS */ 3512 3513 /* FT Action frames */ 3514 if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0) 3515 return -1; 3516 else 3517 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT | 3518 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK; 3519 3520 /* WNM - BSS Transition Management Request */ 3521 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0) 3522 return -1; 3523 /* WNM-Sleep Mode Response */ 3524 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0) 3525 return -1; 3526 3527 return 0; 3528} 3529 3530 3531static int nl80211_register_spurious_class3(struct i802_bss *bss) 3532{ 3533 struct wpa_driver_nl80211_data *drv = bss->drv; 3534 struct nl_msg *msg; 3535 int ret = -1; 3536 3537 msg = nlmsg_alloc(); 3538 if (!msg) 3539 return -1; 3540 3541 nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME); 3542 3543 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 3544 3545 ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL); 3546 msg = NULL; 3547 if (ret) { 3548 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 " 3549 "failed: ret=%d (%s)", 3550 ret, strerror(-ret)); 3551 goto nla_put_failure; 3552 } 3553 ret = 0; 3554nla_put_failure: 3555 nlmsg_free(msg); 3556 return ret; 3557} 3558 3559 3560static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss) 3561{ 3562 static const int stypes[] = { 3563 WLAN_FC_STYPE_AUTH, 3564 WLAN_FC_STYPE_ASSOC_REQ, 3565 WLAN_FC_STYPE_REASSOC_REQ, 3566 WLAN_FC_STYPE_DISASSOC, 3567 WLAN_FC_STYPE_DEAUTH, 3568 WLAN_FC_STYPE_ACTION, 3569 WLAN_FC_STYPE_PROBE_REQ, 3570/* Beacon doesn't work as mac80211 doesn't currently allow 3571 * it, but it wouldn't really be the right thing anyway as 3572 * it isn't per interface ... maybe just dump the scan 3573 * results periodically for OLBC? 3574 */ 3575// WLAN_FC_STYPE_BEACON, 3576 }; 3577 unsigned int i; 3578 3579 if (nl80211_alloc_mgmt_handle(bss)) 3580 return -1; 3581 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 3582 "handle %p", bss->nl_mgmt); 3583 3584 for (i = 0; i < sizeof(stypes) / sizeof(stypes[0]); i++) { 3585 if (nl80211_register_frame(bss, bss->nl_mgmt, 3586 (WLAN_FC_TYPE_MGMT << 2) | 3587 (stypes[i] << 4), 3588 NULL, 0) < 0) { 3589 goto out_err; 3590 } 3591 } 3592 3593 if (nl80211_register_spurious_class3(bss)) 3594 goto out_err; 3595 3596 if (nl80211_get_wiphy_data_ap(bss) == NULL) 3597 goto out_err; 3598 3599 return 0; 3600 3601out_err: 3602 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3603 nl_destroy_handles(&bss->nl_mgmt); 3604 return -1; 3605} 3606 3607 3608static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss) 3609{ 3610 if (nl80211_alloc_mgmt_handle(bss)) 3611 return -1; 3612 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 3613 "handle %p (device SME)", bss->nl_mgmt); 3614 3615 if (nl80211_register_frame(bss, bss->nl_mgmt, 3616 (WLAN_FC_TYPE_MGMT << 2) | 3617 (WLAN_FC_STYPE_ACTION << 4), 3618 NULL, 0) < 0) 3619 goto out_err; 3620 3621 return 0; 3622 3623out_err: 3624 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3625 nl_destroy_handles(&bss->nl_mgmt); 3626 return -1; 3627} 3628 3629 3630static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason) 3631{ 3632 if (bss->nl_mgmt == NULL) 3633 return; 3634 wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p " 3635 "(%s)", bss->nl_mgmt, reason); 3636 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3637 nl_destroy_handles(&bss->nl_mgmt); 3638 3639 nl80211_put_wiphy_data_ap(bss); 3640} 3641 3642 3643static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx) 3644{ 3645 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL); 3646} 3647 3648 3649static int 3650wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv) 3651{ 3652 struct i802_bss *bss = &drv->first_bss; 3653 int send_rfkill_event = 0; 3654 3655 drv->ifindex = if_nametoindex(bss->ifname); 3656 drv->first_bss.ifindex = drv->ifindex; 3657 3658#ifndef HOSTAPD 3659 /* 3660 * Make sure the interface starts up in station mode unless this is a 3661 * dynamically added interface (e.g., P2P) that was already configured 3662 * with proper iftype. 3663 */ 3664 if (drv->ifindex != drv->global->if_add_ifindex && 3665 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION) < 0) { 3666 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver to " 3667 "use managed mode"); 3668 return -1; 3669 } 3670 3671 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { 3672 if (rfkill_is_blocked(drv->rfkill)) { 3673 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable " 3674 "interface '%s' due to rfkill", 3675 bss->ifname); 3676 drv->if_disabled = 1; 3677 send_rfkill_event = 1; 3678 } else { 3679 wpa_printf(MSG_ERROR, "nl80211: Could not set " 3680 "interface '%s' UP", bss->ifname); 3681 return -1; 3682 } 3683 } 3684 3685 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 3686 1, IF_OPER_DORMANT); 3687#endif /* HOSTAPD */ 3688 3689 if (wpa_driver_nl80211_capa(drv)) 3690 return -1; 3691 3692 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 3693 bss->addr)) 3694 return -1; 3695 3696 if (send_rfkill_event) { 3697 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill, 3698 drv, drv->ctx); 3699 } 3700 3701 return 0; 3702} 3703 3704 3705static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv) 3706{ 3707 struct nl_msg *msg; 3708 3709 msg = nlmsg_alloc(); 3710 if (!msg) 3711 return -ENOMEM; 3712 3713 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON); 3714 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3715 3716 return send_and_recv_msgs(drv, msg, NULL, NULL); 3717 nla_put_failure: 3718 nlmsg_free(msg); 3719 return -ENOBUFS; 3720} 3721 3722 3723/** 3724 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface 3725 * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init() 3726 * 3727 * Shut down driver interface and processing of driver events. Free 3728 * private data buffer if one was allocated in wpa_driver_nl80211_init(). 3729 */ 3730static void wpa_driver_nl80211_deinit(struct i802_bss *bss) 3731{ 3732 struct wpa_driver_nl80211_data *drv = bss->drv; 3733 3734 bss->in_deinit = 1; 3735 if (drv->data_tx_status) 3736 eloop_unregister_read_sock(drv->eapol_tx_sock); 3737 if (drv->eapol_tx_sock >= 0) 3738 close(drv->eapol_tx_sock); 3739 3740 if (bss->nl_preq) 3741 wpa_driver_nl80211_probe_req_report(bss, 0); 3742 if (bss->added_if_into_bridge) { 3743 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 3744 bss->ifname) < 0) 3745 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 3746 "interface %s from bridge %s: %s", 3747 bss->ifname, bss->brname, strerror(errno)); 3748 } 3749 if (bss->added_bridge) { 3750 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 3751 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 3752 "bridge %s: %s", 3753 bss->brname, strerror(errno)); 3754 } 3755 3756 nl80211_remove_monitor_interface(drv); 3757 3758 if (is_ap_interface(drv->nlmode)) 3759 wpa_driver_nl80211_del_beacon(drv); 3760 3761#ifdef HOSTAPD 3762 if (drv->last_freq_ht) { 3763 /* Clear HT flags from the driver */ 3764 struct hostapd_freq_params freq; 3765 os_memset(&freq, 0, sizeof(freq)); 3766 freq.freq = drv->last_freq; 3767 wpa_driver_nl80211_set_freq(bss, &freq); 3768 } 3769 3770 if (drv->eapol_sock >= 0) { 3771 eloop_unregister_read_sock(drv->eapol_sock); 3772 close(drv->eapol_sock); 3773 } 3774 3775 if (drv->if_indices != drv->default_if_indices) 3776 os_free(drv->if_indices); 3777#endif /* HOSTAPD */ 3778 3779 if (drv->disabled_11b_rates) 3780 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 3781 3782 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0, 3783 IF_OPER_UP); 3784 rfkill_deinit(drv->rfkill); 3785 3786 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 3787 3788 (void) linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0); 3789 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION); 3790 nl80211_mgmt_unsubscribe(bss, "deinit"); 3791 3792 nl_cb_put(drv->nl_cb); 3793 3794 nl80211_destroy_bss(&drv->first_bss); 3795 3796 os_free(drv->filter_ssids); 3797 3798 os_free(drv->auth_ie); 3799 3800 if (drv->in_interface_list) 3801 dl_list_del(&drv->list); 3802 3803 os_free(drv->extended_capa); 3804 os_free(drv->extended_capa_mask); 3805 os_free(drv); 3806} 3807 3808 3809/** 3810 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion 3811 * @eloop_ctx: Driver private data 3812 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init() 3813 * 3814 * This function can be used as registered timeout when starting a scan to 3815 * generate a scan completed event if the driver does not report this. 3816 */ 3817static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx) 3818{ 3819 struct wpa_driver_nl80211_data *drv = eloop_ctx; 3820 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) { 3821 wpa_driver_nl80211_set_mode(&drv->first_bss, 3822 drv->ap_scan_as_station); 3823 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 3824 } 3825 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results"); 3826 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL); 3827} 3828 3829 3830static struct nl_msg * 3831nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd, 3832 struct wpa_driver_scan_params *params) 3833{ 3834 struct nl_msg *msg; 3835 size_t i; 3836 3837 msg = nlmsg_alloc(); 3838 if (!msg) 3839 return NULL; 3840 3841 nl80211_cmd(drv, msg, 0, cmd); 3842 3843 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) < 0) 3844 goto fail; 3845 3846 if (params->num_ssids) { 3847 struct nlattr *ssids; 3848 3849 ssids = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 3850 if (ssids == NULL) 3851 goto fail; 3852 for (i = 0; i < params->num_ssids; i++) { 3853 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID", 3854 params->ssids[i].ssid, 3855 params->ssids[i].ssid_len); 3856 if (nla_put(msg, i + 1, params->ssids[i].ssid_len, 3857 params->ssids[i].ssid) < 0) 3858 goto fail; 3859 } 3860 nla_nest_end(msg, ssids); 3861 } 3862 3863 if (params->extra_ies) { 3864 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs", 3865 params->extra_ies, params->extra_ies_len); 3866 if (nla_put(msg, NL80211_ATTR_IE, params->extra_ies_len, 3867 params->extra_ies) < 0) 3868 goto fail; 3869 } 3870 3871 if (params->freqs) { 3872 struct nlattr *freqs; 3873 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 3874 if (freqs == NULL) 3875 goto fail; 3876 for (i = 0; params->freqs[i]; i++) { 3877 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u " 3878 "MHz", params->freqs[i]); 3879 if (nla_put_u32(msg, i + 1, params->freqs[i]) < 0) 3880 goto fail; 3881 } 3882 nla_nest_end(msg, freqs); 3883 } 3884 3885 os_free(drv->filter_ssids); 3886 drv->filter_ssids = params->filter_ssids; 3887 params->filter_ssids = NULL; 3888 drv->num_filter_ssids = params->num_filter_ssids; 3889 3890 return msg; 3891 3892fail: 3893 nlmsg_free(msg); 3894 return NULL; 3895} 3896 3897 3898/** 3899 * wpa_driver_nl80211_scan - Request the driver to initiate scan 3900 * @bss: Pointer to private driver data from wpa_driver_nl80211_init() 3901 * @params: Scan parameters 3902 * Returns: 0 on success, -1 on failure 3903 */ 3904static int wpa_driver_nl80211_scan(struct i802_bss *bss, 3905 struct wpa_driver_scan_params *params) 3906{ 3907 struct wpa_driver_nl80211_data *drv = bss->drv; 3908 int ret = -1, timeout; 3909 struct nl_msg *msg = NULL; 3910 3911 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: scan request"); 3912 drv->scan_for_auth = 0; 3913 3914 msg = nl80211_scan_common(drv, NL80211_CMD_TRIGGER_SCAN, params); 3915 if (!msg) 3916 return -1; 3917 3918 if (params->p2p_probe) { 3919 struct nlattr *rates; 3920 3921 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates"); 3922 3923 rates = nla_nest_start(msg, NL80211_ATTR_SCAN_SUPP_RATES); 3924 if (rates == NULL) 3925 goto nla_put_failure; 3926 3927 /* 3928 * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates 3929 * by masking out everything else apart from the OFDM rates 6, 3930 * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz 3931 * rates are left enabled. 3932 */ 3933 NLA_PUT(msg, NL80211_BAND_2GHZ, 8, 3934 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 3935 nla_nest_end(msg, rates); 3936 3937 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 3938 } 3939 3940 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3941 msg = NULL; 3942 if (ret) { 3943 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d " 3944 "(%s)", ret, strerror(-ret)); 3945#ifdef HOSTAPD 3946 if (is_ap_interface(drv->nlmode)) { 3947 /* 3948 * mac80211 does not allow scan requests in AP mode, so 3949 * try to do this in station mode. 3950 */ 3951 if (wpa_driver_nl80211_set_mode( 3952 bss, NL80211_IFTYPE_STATION)) 3953 goto nla_put_failure; 3954 3955 if (wpa_driver_nl80211_scan(bss, params)) { 3956 wpa_driver_nl80211_set_mode(bss, drv->nlmode); 3957 goto nla_put_failure; 3958 } 3959 3960 /* Restore AP mode when processing scan results */ 3961 drv->ap_scan_as_station = drv->nlmode; 3962 ret = 0; 3963 } else 3964 goto nla_put_failure; 3965#else /* HOSTAPD */ 3966 goto nla_put_failure; 3967#endif /* HOSTAPD */ 3968 } 3969 3970 /* Not all drivers generate "scan completed" wireless event, so try to 3971 * read results after a timeout. */ 3972 timeout = 10; 3973 if (drv->scan_complete_events) { 3974 /* 3975 * The driver seems to deliver events to notify when scan is 3976 * complete, so use longer timeout to avoid race conditions 3977 * with scanning and following association request. 3978 */ 3979 timeout = 30; 3980 } 3981 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d " 3982 "seconds", ret, timeout); 3983 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 3984 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout, 3985 drv, drv->ctx); 3986 3987nla_put_failure: 3988 nlmsg_free(msg); 3989 return ret; 3990} 3991 3992 3993/** 3994 * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan 3995 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 3996 * @params: Scan parameters 3997 * @interval: Interval between scan cycles in milliseconds 3998 * Returns: 0 on success, -1 on failure or if not supported 3999 */ 4000static int wpa_driver_nl80211_sched_scan(void *priv, 4001 struct wpa_driver_scan_params *params, 4002 u32 interval) 4003{ 4004 struct i802_bss *bss = priv; 4005 struct wpa_driver_nl80211_data *drv = bss->drv; 4006 int ret = -1; 4007 struct nl_msg *msg; 4008 size_t i; 4009 4010 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: sched_scan request"); 4011 4012#ifdef ANDROID 4013 if (!drv->capa.sched_scan_supported) 4014 return android_pno_start(bss, params); 4015#endif /* ANDROID */ 4016 4017 msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params); 4018 if (!msg) 4019 goto nla_put_failure; 4020 4021 NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval); 4022 4023 if ((drv->num_filter_ssids && 4024 (int) drv->num_filter_ssids <= drv->capa.max_match_sets) || 4025 params->filter_rssi) { 4026 struct nlattr *match_sets; 4027 match_sets = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH); 4028 if (match_sets == NULL) 4029 goto nla_put_failure; 4030 4031 for (i = 0; i < drv->num_filter_ssids; i++) { 4032 struct nlattr *match_set_ssid; 4033 wpa_hexdump_ascii(MSG_MSGDUMP, 4034 "nl80211: Sched scan filter SSID", 4035 drv->filter_ssids[i].ssid, 4036 drv->filter_ssids[i].ssid_len); 4037 4038 match_set_ssid = nla_nest_start(msg, i + 1); 4039 if (match_set_ssid == NULL) 4040 goto nla_put_failure; 4041 NLA_PUT(msg, NL80211_ATTR_SCHED_SCAN_MATCH_SSID, 4042 drv->filter_ssids[i].ssid_len, 4043 drv->filter_ssids[i].ssid); 4044 4045 nla_nest_end(msg, match_set_ssid); 4046 } 4047 4048 if (params->filter_rssi) { 4049 struct nlattr *match_set_rssi; 4050 match_set_rssi = nla_nest_start(msg, 0); 4051 if (match_set_rssi == NULL) 4052 goto nla_put_failure; 4053 NLA_PUT_U32(msg, NL80211_SCHED_SCAN_MATCH_ATTR_RSSI, 4054 params->filter_rssi); 4055 wpa_printf(MSG_MSGDUMP, 4056 "nl80211: Sched scan RSSI filter %d dBm", 4057 params->filter_rssi); 4058 nla_nest_end(msg, match_set_rssi); 4059 } 4060 4061 nla_nest_end(msg, match_sets); 4062 } 4063 4064 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4065 4066 /* TODO: if we get an error here, we should fall back to normal scan */ 4067 4068 msg = NULL; 4069 if (ret) { 4070 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: " 4071 "ret=%d (%s)", ret, strerror(-ret)); 4072 goto nla_put_failure; 4073 } 4074 4075 wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - " 4076 "scan interval %d msec", ret, interval); 4077 4078nla_put_failure: 4079 nlmsg_free(msg); 4080 return ret; 4081} 4082 4083 4084/** 4085 * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan 4086 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 4087 * Returns: 0 on success, -1 on failure or if not supported 4088 */ 4089static int wpa_driver_nl80211_stop_sched_scan(void *priv) 4090{ 4091 struct i802_bss *bss = priv; 4092 struct wpa_driver_nl80211_data *drv = bss->drv; 4093 int ret = 0; 4094 struct nl_msg *msg; 4095 4096#ifdef ANDROID 4097 if (!drv->capa.sched_scan_supported) 4098 return android_pno_stop(bss); 4099#endif /* ANDROID */ 4100 4101 msg = nlmsg_alloc(); 4102 if (!msg) 4103 return -1; 4104 4105 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN); 4106 4107 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4108 4109 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4110 msg = NULL; 4111 if (ret) { 4112 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: " 4113 "ret=%d (%s)", ret, strerror(-ret)); 4114 goto nla_put_failure; 4115 } 4116 4117 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret); 4118 4119nla_put_failure: 4120 nlmsg_free(msg); 4121 return ret; 4122} 4123 4124 4125static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie) 4126{ 4127 const u8 *end, *pos; 4128 4129 if (ies == NULL) 4130 return NULL; 4131 4132 pos = ies; 4133 end = ies + ies_len; 4134 4135 while (pos + 1 < end) { 4136 if (pos + 2 + pos[1] > end) 4137 break; 4138 if (pos[0] == ie) 4139 return pos; 4140 pos += 2 + pos[1]; 4141 } 4142 4143 return NULL; 4144} 4145 4146 4147static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv, 4148 const u8 *ie, size_t ie_len) 4149{ 4150 const u8 *ssid; 4151 size_t i; 4152 4153 if (drv->filter_ssids == NULL) 4154 return 0; 4155 4156 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID); 4157 if (ssid == NULL) 4158 return 1; 4159 4160 for (i = 0; i < drv->num_filter_ssids; i++) { 4161 if (ssid[1] == drv->filter_ssids[i].ssid_len && 4162 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) == 4163 0) 4164 return 0; 4165 } 4166 4167 return 1; 4168} 4169 4170 4171static int bss_info_handler(struct nl_msg *msg, void *arg) 4172{ 4173 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 4174 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 4175 struct nlattr *bss[NL80211_BSS_MAX + 1]; 4176 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { 4177 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC }, 4178 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, 4179 [NL80211_BSS_TSF] = { .type = NLA_U64 }, 4180 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 }, 4181 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 }, 4182 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC }, 4183 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 }, 4184 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 }, 4185 [NL80211_BSS_STATUS] = { .type = NLA_U32 }, 4186 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 }, 4187 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC }, 4188 }; 4189 struct nl80211_bss_info_arg *_arg = arg; 4190 struct wpa_scan_results *res = _arg->res; 4191 struct wpa_scan_res **tmp; 4192 struct wpa_scan_res *r; 4193 const u8 *ie, *beacon_ie; 4194 size_t ie_len, beacon_ie_len; 4195 u8 *pos; 4196 size_t i; 4197 4198 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 4199 genlmsg_attrlen(gnlh, 0), NULL); 4200 if (!tb[NL80211_ATTR_BSS]) 4201 return NL_SKIP; 4202 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS], 4203 bss_policy)) 4204 return NL_SKIP; 4205 if (bss[NL80211_BSS_STATUS]) { 4206 enum nl80211_bss_status status; 4207 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 4208 if (status == NL80211_BSS_STATUS_ASSOCIATED && 4209 bss[NL80211_BSS_FREQUENCY]) { 4210 _arg->assoc_freq = 4211 nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 4212 wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz", 4213 _arg->assoc_freq); 4214 } 4215 if (status == NL80211_BSS_STATUS_ASSOCIATED && 4216 bss[NL80211_BSS_BSSID]) { 4217 os_memcpy(_arg->assoc_bssid, 4218 nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN); 4219 wpa_printf(MSG_DEBUG, "nl80211: Associated with " 4220 MACSTR, MAC2STR(_arg->assoc_bssid)); 4221 } 4222 } 4223 if (!res) 4224 return NL_SKIP; 4225 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) { 4226 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 4227 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 4228 } else { 4229 ie = NULL; 4230 ie_len = 0; 4231 } 4232 if (bss[NL80211_BSS_BEACON_IES]) { 4233 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]); 4234 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]); 4235 } else { 4236 beacon_ie = NULL; 4237 beacon_ie_len = 0; 4238 } 4239 4240 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie, 4241 ie ? ie_len : beacon_ie_len)) 4242 return NL_SKIP; 4243 4244 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len); 4245 if (r == NULL) 4246 return NL_SKIP; 4247 if (bss[NL80211_BSS_BSSID]) 4248 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]), 4249 ETH_ALEN); 4250 if (bss[NL80211_BSS_FREQUENCY]) 4251 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 4252 if (bss[NL80211_BSS_BEACON_INTERVAL]) 4253 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]); 4254 if (bss[NL80211_BSS_CAPABILITY]) 4255 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]); 4256 r->flags |= WPA_SCAN_NOISE_INVALID; 4257 if (bss[NL80211_BSS_SIGNAL_MBM]) { 4258 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]); 4259 r->level /= 100; /* mBm to dBm */ 4260 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID; 4261 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) { 4262 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]); 4263 r->flags |= WPA_SCAN_QUAL_INVALID; 4264 } else 4265 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID; 4266 if (bss[NL80211_BSS_TSF]) 4267 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]); 4268 if (bss[NL80211_BSS_SEEN_MS_AGO]) 4269 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]); 4270 r->ie_len = ie_len; 4271 pos = (u8 *) (r + 1); 4272 if (ie) { 4273 os_memcpy(pos, ie, ie_len); 4274 pos += ie_len; 4275 } 4276 r->beacon_ie_len = beacon_ie_len; 4277 if (beacon_ie) 4278 os_memcpy(pos, beacon_ie, beacon_ie_len); 4279 4280 if (bss[NL80211_BSS_STATUS]) { 4281 enum nl80211_bss_status status; 4282 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 4283 switch (status) { 4284 case NL80211_BSS_STATUS_AUTHENTICATED: 4285 r->flags |= WPA_SCAN_AUTHENTICATED; 4286 break; 4287 case NL80211_BSS_STATUS_ASSOCIATED: 4288 r->flags |= WPA_SCAN_ASSOCIATED; 4289 break; 4290 default: 4291 break; 4292 } 4293 } 4294 4295 /* 4296 * cfg80211 maintains separate BSS table entries for APs if the same 4297 * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does 4298 * not use frequency as a separate key in the BSS table, so filter out 4299 * duplicated entries. Prefer associated BSS entry in such a case in 4300 * order to get the correct frequency into the BSS table. 4301 */ 4302 for (i = 0; i < res->num; i++) { 4303 const u8 *s1, *s2; 4304 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0) 4305 continue; 4306 4307 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1), 4308 res->res[i]->ie_len, WLAN_EID_SSID); 4309 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID); 4310 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] || 4311 os_memcmp(s1, s2, 2 + s1[1]) != 0) 4312 continue; 4313 4314 /* Same BSSID,SSID was already included in scan results */ 4315 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result " 4316 "for " MACSTR, MAC2STR(r->bssid)); 4317 4318 if ((r->flags & WPA_SCAN_ASSOCIATED) && 4319 !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) { 4320 os_free(res->res[i]); 4321 res->res[i] = r; 4322 } else 4323 os_free(r); 4324 return NL_SKIP; 4325 } 4326 4327 tmp = os_realloc_array(res->res, res->num + 1, 4328 sizeof(struct wpa_scan_res *)); 4329 if (tmp == NULL) { 4330 os_free(r); 4331 return NL_SKIP; 4332 } 4333 tmp[res->num++] = r; 4334 res->res = tmp; 4335 4336 return NL_SKIP; 4337} 4338 4339 4340static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv, 4341 const u8 *addr) 4342{ 4343 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 4344 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state " 4345 "mismatch (" MACSTR ")", MAC2STR(addr)); 4346 wpa_driver_nl80211_mlme(drv, addr, 4347 NL80211_CMD_DEAUTHENTICATE, 4348 WLAN_REASON_PREV_AUTH_NOT_VALID, 1); 4349 } 4350} 4351 4352 4353static void wpa_driver_nl80211_check_bss_status( 4354 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res) 4355{ 4356 size_t i; 4357 4358 for (i = 0; i < res->num; i++) { 4359 struct wpa_scan_res *r = res->res[i]; 4360 if (r->flags & WPA_SCAN_AUTHENTICATED) { 4361 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 4362 "indicates BSS status with " MACSTR 4363 " as authenticated", 4364 MAC2STR(r->bssid)); 4365 if (is_sta_interface(drv->nlmode) && 4366 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 && 4367 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) != 4368 0) { 4369 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID" 4370 " in local state (auth=" MACSTR 4371 " assoc=" MACSTR ")", 4372 MAC2STR(drv->auth_bssid), 4373 MAC2STR(drv->bssid)); 4374 clear_state_mismatch(drv, r->bssid); 4375 } 4376 } 4377 4378 if (r->flags & WPA_SCAN_ASSOCIATED) { 4379 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 4380 "indicate BSS status with " MACSTR 4381 " as associated", 4382 MAC2STR(r->bssid)); 4383 if (is_sta_interface(drv->nlmode) && 4384 !drv->associated) { 4385 wpa_printf(MSG_DEBUG, "nl80211: Local state " 4386 "(not associated) does not match " 4387 "with BSS state"); 4388 clear_state_mismatch(drv, r->bssid); 4389 } else if (is_sta_interface(drv->nlmode) && 4390 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) != 4391 0) { 4392 wpa_printf(MSG_DEBUG, "nl80211: Local state " 4393 "(associated with " MACSTR ") does " 4394 "not match with BSS state", 4395 MAC2STR(drv->bssid)); 4396 clear_state_mismatch(drv, r->bssid); 4397 clear_state_mismatch(drv, drv->bssid); 4398 } 4399 } 4400 } 4401} 4402 4403 4404static struct wpa_scan_results * 4405nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv) 4406{ 4407 struct nl_msg *msg; 4408 struct wpa_scan_results *res; 4409 int ret; 4410 struct nl80211_bss_info_arg arg; 4411 4412 res = os_zalloc(sizeof(*res)); 4413 if (res == NULL) 4414 return NULL; 4415 msg = nlmsg_alloc(); 4416 if (!msg) 4417 goto nla_put_failure; 4418 4419 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 4420 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4421 4422 arg.drv = drv; 4423 arg.res = res; 4424 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 4425 msg = NULL; 4426 if (ret == 0) { 4427 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu " 4428 "BSSes)", (unsigned long) res->num); 4429 nl80211_get_noise_for_scan_results(drv, res); 4430 return res; 4431 } 4432 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 4433 "(%s)", ret, strerror(-ret)); 4434nla_put_failure: 4435 nlmsg_free(msg); 4436 wpa_scan_results_free(res); 4437 return NULL; 4438} 4439 4440 4441/** 4442 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results 4443 * @priv: Pointer to private wext data from wpa_driver_nl80211_init() 4444 * Returns: Scan results on success, -1 on failure 4445 */ 4446static struct wpa_scan_results * 4447wpa_driver_nl80211_get_scan_results(void *priv) 4448{ 4449 struct i802_bss *bss = priv; 4450 struct wpa_driver_nl80211_data *drv = bss->drv; 4451 struct wpa_scan_results *res; 4452 4453 res = nl80211_get_scan_results(drv); 4454 if (res) 4455 wpa_driver_nl80211_check_bss_status(drv, res); 4456 return res; 4457} 4458 4459 4460static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv) 4461{ 4462 struct wpa_scan_results *res; 4463 size_t i; 4464 4465 res = nl80211_get_scan_results(drv); 4466 if (res == NULL) { 4467 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results"); 4468 return; 4469 } 4470 4471 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump"); 4472 for (i = 0; i < res->num; i++) { 4473 struct wpa_scan_res *r = res->res[i]; 4474 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s", 4475 (int) i, (int) res->num, MAC2STR(r->bssid), 4476 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "", 4477 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : ""); 4478 } 4479 4480 wpa_scan_results_free(res); 4481} 4482 4483 4484static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss, 4485 enum wpa_alg alg, const u8 *addr, 4486 int key_idx, int set_tx, 4487 const u8 *seq, size_t seq_len, 4488 const u8 *key, size_t key_len) 4489{ 4490 struct wpa_driver_nl80211_data *drv = bss->drv; 4491 int ifindex = if_nametoindex(ifname); 4492 struct nl_msg *msg; 4493 int ret; 4494 4495 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d " 4496 "set_tx=%d seq_len=%lu key_len=%lu", 4497 __func__, ifindex, alg, addr, key_idx, set_tx, 4498 (unsigned long) seq_len, (unsigned long) key_len); 4499#ifdef CONFIG_TDLS 4500 if (key_idx == -1) 4501 key_idx = 0; 4502#endif /* CONFIG_TDLS */ 4503 4504 msg = nlmsg_alloc(); 4505 if (!msg) 4506 return -ENOMEM; 4507 4508 if (alg == WPA_ALG_NONE) { 4509 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY); 4510 } else { 4511 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY); 4512 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key); 4513 switch (alg) { 4514 case WPA_ALG_WEP: 4515 if (key_len == 5) 4516 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4517 WLAN_CIPHER_SUITE_WEP40); 4518 else 4519 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4520 WLAN_CIPHER_SUITE_WEP104); 4521 break; 4522 case WPA_ALG_TKIP: 4523 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4524 WLAN_CIPHER_SUITE_TKIP); 4525 break; 4526 case WPA_ALG_CCMP: 4527 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4528 WLAN_CIPHER_SUITE_CCMP); 4529 break; 4530 case WPA_ALG_GCMP: 4531 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4532 WLAN_CIPHER_SUITE_GCMP); 4533 break; 4534 case WPA_ALG_IGTK: 4535 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4536 WLAN_CIPHER_SUITE_AES_CMAC); 4537 break; 4538 case WPA_ALG_SMS4: 4539 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4540 WLAN_CIPHER_SUITE_SMS4); 4541 break; 4542 case WPA_ALG_KRK: 4543 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4544 WLAN_CIPHER_SUITE_KRK); 4545 break; 4546 default: 4547 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 4548 "algorithm %d", __func__, alg); 4549 nlmsg_free(msg); 4550 return -1; 4551 } 4552 } 4553 4554 if (seq && seq_len) 4555 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq); 4556 4557 if (addr && !is_broadcast_ether_addr(addr)) { 4558 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr)); 4559 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 4560 4561 if (alg != WPA_ALG_WEP && key_idx && !set_tx) { 4562 wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK"); 4563 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, 4564 NL80211_KEYTYPE_GROUP); 4565 } 4566 } else if (addr && is_broadcast_ether_addr(addr)) { 4567 struct nlattr *types; 4568 4569 wpa_printf(MSG_DEBUG, " broadcast key"); 4570 4571 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES); 4572 if (!types) 4573 goto nla_put_failure; 4574 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 4575 nla_nest_end(msg, types); 4576 } 4577 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 4578 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 4579 4580 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4581 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE) 4582 ret = 0; 4583 if (ret) 4584 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)", 4585 ret, strerror(-ret)); 4586 4587 /* 4588 * If we failed or don't need to set the default TX key (below), 4589 * we're done here. 4590 */ 4591 if (ret || !set_tx || alg == WPA_ALG_NONE) 4592 return ret; 4593 if (is_ap_interface(drv->nlmode) && addr && 4594 !is_broadcast_ether_addr(addr)) 4595 return ret; 4596 4597 msg = nlmsg_alloc(); 4598 if (!msg) 4599 return -ENOMEM; 4600 4601 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY); 4602 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 4603 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 4604 if (alg == WPA_ALG_IGTK) 4605 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT); 4606 else 4607 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT); 4608 if (addr && is_broadcast_ether_addr(addr)) { 4609 struct nlattr *types; 4610 4611 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES); 4612 if (!types) 4613 goto nla_put_failure; 4614 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 4615 nla_nest_end(msg, types); 4616 } else if (addr) { 4617 struct nlattr *types; 4618 4619 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES); 4620 if (!types) 4621 goto nla_put_failure; 4622 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST); 4623 nla_nest_end(msg, types); 4624 } 4625 4626 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4627 if (ret == -ENOENT) 4628 ret = 0; 4629 if (ret) 4630 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; " 4631 "err=%d %s)", ret, strerror(-ret)); 4632 return ret; 4633 4634nla_put_failure: 4635 nlmsg_free(msg); 4636 return -ENOBUFS; 4637} 4638 4639 4640static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg, 4641 int key_idx, int defkey, 4642 const u8 *seq, size_t seq_len, 4643 const u8 *key, size_t key_len) 4644{ 4645 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY); 4646 if (!key_attr) 4647 return -1; 4648 4649 if (defkey && alg == WPA_ALG_IGTK) 4650 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT); 4651 else if (defkey) 4652 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 4653 4654 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx); 4655 4656 switch (alg) { 4657 case WPA_ALG_WEP: 4658 if (key_len == 5) 4659 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4660 WLAN_CIPHER_SUITE_WEP40); 4661 else 4662 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4663 WLAN_CIPHER_SUITE_WEP104); 4664 break; 4665 case WPA_ALG_TKIP: 4666 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP); 4667 break; 4668 case WPA_ALG_CCMP: 4669 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP); 4670 break; 4671 case WPA_ALG_GCMP: 4672 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_GCMP); 4673 break; 4674 case WPA_ALG_IGTK: 4675 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4676 WLAN_CIPHER_SUITE_AES_CMAC); 4677 break; 4678 default: 4679 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 4680 "algorithm %d", __func__, alg); 4681 return -1; 4682 } 4683 4684 if (seq && seq_len) 4685 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq); 4686 4687 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key); 4688 4689 nla_nest_end(msg, key_attr); 4690 4691 return 0; 4692 nla_put_failure: 4693 return -1; 4694} 4695 4696 4697static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params, 4698 struct nl_msg *msg) 4699{ 4700 int i, privacy = 0; 4701 struct nlattr *nl_keys, *nl_key; 4702 4703 for (i = 0; i < 4; i++) { 4704 if (!params->wep_key[i]) 4705 continue; 4706 privacy = 1; 4707 break; 4708 } 4709 if (params->wps == WPS_MODE_PRIVACY) 4710 privacy = 1; 4711 if (params->pairwise_suite && 4712 params->pairwise_suite != WPA_CIPHER_NONE) 4713 privacy = 1; 4714 4715 if (!privacy) 4716 return 0; 4717 4718 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 4719 4720 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS); 4721 if (!nl_keys) 4722 goto nla_put_failure; 4723 4724 for (i = 0; i < 4; i++) { 4725 if (!params->wep_key[i]) 4726 continue; 4727 4728 nl_key = nla_nest_start(msg, i); 4729 if (!nl_key) 4730 goto nla_put_failure; 4731 4732 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i], 4733 params->wep_key[i]); 4734 if (params->wep_key_len[i] == 5) 4735 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4736 WLAN_CIPHER_SUITE_WEP40); 4737 else 4738 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4739 WLAN_CIPHER_SUITE_WEP104); 4740 4741 NLA_PUT_U8(msg, NL80211_KEY_IDX, i); 4742 4743 if (i == params->wep_tx_keyidx) 4744 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 4745 4746 nla_nest_end(msg, nl_key); 4747 } 4748 nla_nest_end(msg, nl_keys); 4749 4750 return 0; 4751 4752nla_put_failure: 4753 return -ENOBUFS; 4754} 4755 4756 4757static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 4758 const u8 *addr, int cmd, u16 reason_code, 4759 int local_state_change) 4760{ 4761 int ret = -1; 4762 struct nl_msg *msg; 4763 4764 msg = nlmsg_alloc(); 4765 if (!msg) 4766 return -1; 4767 4768 nl80211_cmd(drv, msg, 0, cmd); 4769 4770 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4771 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code); 4772 if (addr) 4773 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 4774 if (local_state_change) 4775 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 4776 4777 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4778 msg = NULL; 4779 if (ret) { 4780 wpa_dbg(drv->ctx, MSG_DEBUG, 4781 "nl80211: MLME command failed: reason=%u ret=%d (%s)", 4782 reason_code, ret, strerror(-ret)); 4783 goto nla_put_failure; 4784 } 4785 ret = 0; 4786 4787nla_put_failure: 4788 nlmsg_free(msg); 4789 return ret; 4790} 4791 4792 4793static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv, 4794 int reason_code) 4795{ 4796 wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code); 4797 drv->associated = 0; 4798 drv->ignore_next_local_disconnect = 0; 4799 /* Disconnect command doesn't need BSSID - it uses cached value */ 4800 return wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT, 4801 reason_code, 0); 4802} 4803 4804 4805static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss, 4806 const u8 *addr, int reason_code) 4807{ 4808 struct wpa_driver_nl80211_data *drv = bss->drv; 4809 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) 4810 return wpa_driver_nl80211_disconnect(drv, reason_code); 4811 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)", 4812 __func__, MAC2STR(addr), reason_code); 4813 drv->associated = 0; 4814 if (drv->nlmode == NL80211_IFTYPE_ADHOC) 4815 return nl80211_leave_ibss(drv); 4816 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE, 4817 reason_code, 0); 4818} 4819 4820 4821static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv, 4822 struct wpa_driver_auth_params *params) 4823{ 4824 int i; 4825 4826 drv->auth_freq = params->freq; 4827 drv->auth_alg = params->auth_alg; 4828 drv->auth_wep_tx_keyidx = params->wep_tx_keyidx; 4829 drv->auth_local_state_change = params->local_state_change; 4830 drv->auth_p2p = params->p2p; 4831 4832 if (params->bssid) 4833 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN); 4834 else 4835 os_memset(drv->auth_bssid_, 0, ETH_ALEN); 4836 4837 if (params->ssid) { 4838 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len); 4839 drv->auth_ssid_len = params->ssid_len; 4840 } else 4841 drv->auth_ssid_len = 0; 4842 4843 4844 os_free(drv->auth_ie); 4845 drv->auth_ie = NULL; 4846 drv->auth_ie_len = 0; 4847 if (params->ie) { 4848 drv->auth_ie = os_malloc(params->ie_len); 4849 if (drv->auth_ie) { 4850 os_memcpy(drv->auth_ie, params->ie, params->ie_len); 4851 drv->auth_ie_len = params->ie_len; 4852 } 4853 } 4854 4855 for (i = 0; i < 4; i++) { 4856 if (params->wep_key[i] && params->wep_key_len[i] && 4857 params->wep_key_len[i] <= 16) { 4858 os_memcpy(drv->auth_wep_key[i], params->wep_key[i], 4859 params->wep_key_len[i]); 4860 drv->auth_wep_key_len[i] = params->wep_key_len[i]; 4861 } else 4862 drv->auth_wep_key_len[i] = 0; 4863 } 4864} 4865 4866 4867static int wpa_driver_nl80211_authenticate( 4868 struct i802_bss *bss, struct wpa_driver_auth_params *params) 4869{ 4870 struct wpa_driver_nl80211_data *drv = bss->drv; 4871 int ret = -1, i; 4872 struct nl_msg *msg; 4873 enum nl80211_auth_type type; 4874 enum nl80211_iftype nlmode; 4875 int count = 0; 4876 int is_retry; 4877 4878 is_retry = drv->retry_auth; 4879 drv->retry_auth = 0; 4880 4881 drv->associated = 0; 4882 os_memset(drv->auth_bssid, 0, ETH_ALEN); 4883 /* FIX: IBSS mode */ 4884 nlmode = params->p2p ? 4885 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 4886 if (drv->nlmode != nlmode && 4887 wpa_driver_nl80211_set_mode(bss, nlmode) < 0) 4888 return -1; 4889 4890retry: 4891 msg = nlmsg_alloc(); 4892 if (!msg) 4893 return -1; 4894 4895 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)", 4896 drv->ifindex); 4897 4898 nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE); 4899 4900 for (i = 0; i < 4; i++) { 4901 if (!params->wep_key[i]) 4902 continue; 4903 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP, 4904 NULL, i, 4905 i == params->wep_tx_keyidx, NULL, 0, 4906 params->wep_key[i], 4907 params->wep_key_len[i]); 4908 if (params->wep_tx_keyidx != i) 4909 continue; 4910 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0, 4911 params->wep_key[i], params->wep_key_len[i])) { 4912 nlmsg_free(msg); 4913 return -1; 4914 } 4915 } 4916 4917 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4918 if (params->bssid) { 4919 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 4920 MAC2STR(params->bssid)); 4921 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 4922 } 4923 if (params->freq) { 4924 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 4925 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 4926 } 4927 if (params->ssid) { 4928 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 4929 params->ssid, params->ssid_len); 4930 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 4931 params->ssid); 4932 } 4933 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len); 4934 if (params->ie) 4935 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie); 4936 if (params->sae_data) { 4937 wpa_hexdump(MSG_DEBUG, " * SAE data", params->sae_data, 4938 params->sae_data_len); 4939 NLA_PUT(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len, 4940 params->sae_data); 4941 } 4942 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 4943 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 4944 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 4945 type = NL80211_AUTHTYPE_SHARED_KEY; 4946 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 4947 type = NL80211_AUTHTYPE_NETWORK_EAP; 4948 else if (params->auth_alg & WPA_AUTH_ALG_FT) 4949 type = NL80211_AUTHTYPE_FT; 4950 else if (params->auth_alg & WPA_AUTH_ALG_SAE) 4951 type = NL80211_AUTHTYPE_SAE; 4952 else 4953 goto nla_put_failure; 4954 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 4955 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 4956 if (params->local_state_change) { 4957 wpa_printf(MSG_DEBUG, " * Local state change only"); 4958 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 4959 } 4960 4961 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4962 msg = NULL; 4963 if (ret) { 4964 wpa_dbg(drv->ctx, MSG_DEBUG, 4965 "nl80211: MLME command failed (auth): ret=%d (%s)", 4966 ret, strerror(-ret)); 4967 count++; 4968 if (ret == -EALREADY && count == 1 && params->bssid && 4969 !params->local_state_change) { 4970 /* 4971 * mac80211 does not currently accept new 4972 * authentication if we are already authenticated. As a 4973 * workaround, force deauthentication and try again. 4974 */ 4975 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication " 4976 "after forced deauthentication"); 4977 wpa_driver_nl80211_deauthenticate( 4978 bss, params->bssid, 4979 WLAN_REASON_PREV_AUTH_NOT_VALID); 4980 nlmsg_free(msg); 4981 goto retry; 4982 } 4983 4984 if (ret == -ENOENT && params->freq && !is_retry) { 4985 /* 4986 * cfg80211 has likely expired the BSS entry even 4987 * though it was previously available in our internal 4988 * BSS table. To recover quickly, start a single 4989 * channel scan on the specified channel. 4990 */ 4991 struct wpa_driver_scan_params scan; 4992 int freqs[2]; 4993 4994 os_memset(&scan, 0, sizeof(scan)); 4995 scan.num_ssids = 1; 4996 if (params->ssid) { 4997 scan.ssids[0].ssid = params->ssid; 4998 scan.ssids[0].ssid_len = params->ssid_len; 4999 } 5000 freqs[0] = params->freq; 5001 freqs[1] = 0; 5002 scan.freqs = freqs; 5003 wpa_printf(MSG_DEBUG, "nl80211: Trigger single " 5004 "channel scan to refresh cfg80211 BSS " 5005 "entry"); 5006 ret = wpa_driver_nl80211_scan(bss, &scan); 5007 if (ret == 0) { 5008 nl80211_copy_auth_params(drv, params); 5009 drv->scan_for_auth = 1; 5010 } 5011 } else if (is_retry) { 5012 /* 5013 * Need to indicate this with an event since the return 5014 * value from the retry is not delivered to core code. 5015 */ 5016 union wpa_event_data event; 5017 wpa_printf(MSG_DEBUG, "nl80211: Authentication retry " 5018 "failed"); 5019 os_memset(&event, 0, sizeof(event)); 5020 os_memcpy(event.timeout_event.addr, drv->auth_bssid_, 5021 ETH_ALEN); 5022 wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT, 5023 &event); 5024 } 5025 5026 goto nla_put_failure; 5027 } 5028 ret = 0; 5029 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send " 5030 "successfully"); 5031 5032nla_put_failure: 5033 nlmsg_free(msg); 5034 return ret; 5035} 5036 5037 5038static int wpa_driver_nl80211_authenticate_retry( 5039 struct wpa_driver_nl80211_data *drv) 5040{ 5041 struct wpa_driver_auth_params params; 5042 struct i802_bss *bss = &drv->first_bss; 5043 int i; 5044 5045 wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again"); 5046 5047 os_memset(¶ms, 0, sizeof(params)); 5048 params.freq = drv->auth_freq; 5049 params.auth_alg = drv->auth_alg; 5050 params.wep_tx_keyidx = drv->auth_wep_tx_keyidx; 5051 params.local_state_change = drv->auth_local_state_change; 5052 params.p2p = drv->auth_p2p; 5053 5054 if (!is_zero_ether_addr(drv->auth_bssid_)) 5055 params.bssid = drv->auth_bssid_; 5056 5057 if (drv->auth_ssid_len) { 5058 params.ssid = drv->auth_ssid; 5059 params.ssid_len = drv->auth_ssid_len; 5060 } 5061 5062 params.ie = drv->auth_ie; 5063 params.ie_len = drv->auth_ie_len; 5064 5065 for (i = 0; i < 4; i++) { 5066 if (drv->auth_wep_key_len[i]) { 5067 params.wep_key[i] = drv->auth_wep_key[i]; 5068 params.wep_key_len[i] = drv->auth_wep_key_len[i]; 5069 } 5070 } 5071 5072 drv->retry_auth = 1; 5073 return wpa_driver_nl80211_authenticate(bss, ¶ms); 5074} 5075 5076 5077struct phy_info_arg { 5078 u16 *num_modes; 5079 struct hostapd_hw_modes *modes; 5080 int last_mode, last_chan_idx; 5081}; 5082 5083static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa, 5084 struct nlattr *ampdu_factor, 5085 struct nlattr *ampdu_density, 5086 struct nlattr *mcs_set) 5087{ 5088 if (capa) 5089 mode->ht_capab = nla_get_u16(capa); 5090 5091 if (ampdu_factor) 5092 mode->a_mpdu_params |= nla_get_u8(ampdu_factor) & 0x03; 5093 5094 if (ampdu_density) 5095 mode->a_mpdu_params |= nla_get_u8(ampdu_density) << 2; 5096 5097 if (mcs_set && nla_len(mcs_set) >= 16) { 5098 u8 *mcs; 5099 mcs = nla_data(mcs_set); 5100 os_memcpy(mode->mcs_set, mcs, 16); 5101 } 5102} 5103 5104 5105static void phy_info_vht_capa(struct hostapd_hw_modes *mode, 5106 struct nlattr *capa, 5107 struct nlattr *mcs_set) 5108{ 5109 if (capa) 5110 mode->vht_capab = nla_get_u32(capa); 5111 5112 if (mcs_set && nla_len(mcs_set) >= 8) { 5113 u8 *mcs; 5114 mcs = nla_data(mcs_set); 5115 os_memcpy(mode->vht_mcs_set, mcs, 8); 5116 } 5117} 5118 5119 5120static void phy_info_freq(struct hostapd_hw_modes *mode, 5121 struct hostapd_channel_data *chan, 5122 struct nlattr *tb_freq[]) 5123{ 5124 enum hostapd_hw_mode m; 5125 5126 chan->freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]); 5127 chan->flag = 0; 5128 5129 if (chan->freq < 4000) 5130 m = HOSTAPD_MODE_IEEE80211B; 5131 else if (chan->freq > 50000) 5132 m = HOSTAPD_MODE_IEEE80211AD; 5133 else 5134 m = HOSTAPD_MODE_IEEE80211A; 5135 5136 switch (m) { 5137 case HOSTAPD_MODE_IEEE80211AD: 5138 chan->chan = (chan->freq - 56160) / 2160; 5139 break; 5140 case HOSTAPD_MODE_IEEE80211A: 5141 chan->chan = chan->freq / 5 - 1000; 5142 break; 5143 case HOSTAPD_MODE_IEEE80211B: 5144 case HOSTAPD_MODE_IEEE80211G: 5145 if (chan->freq == 2484) 5146 chan->chan = 14; 5147 else 5148 chan->chan = (chan->freq - 2407) / 5; 5149 break; 5150 default: 5151 break; 5152 } 5153 5154 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 5155 chan->flag |= HOSTAPD_CHAN_DISABLED; 5156 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN]) 5157 chan->flag |= HOSTAPD_CHAN_PASSIVE_SCAN; 5158 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS]) 5159 chan->flag |= HOSTAPD_CHAN_NO_IBSS; 5160 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR]) 5161 chan->flag |= HOSTAPD_CHAN_RADAR; 5162 5163 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] && 5164 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 5165 chan->max_tx_power = nla_get_u32( 5166 tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100; 5167} 5168 5169 5170static int phy_info_freqs(struct phy_info_arg *phy_info, 5171 struct hostapd_hw_modes *mode, struct nlattr *tb) 5172{ 5173 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 5174 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, 5175 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, 5176 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG }, 5177 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG }, 5178 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, 5179 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 }, 5180 }; 5181 int new_channels = 0; 5182 struct hostapd_channel_data *channel; 5183 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1]; 5184 struct nlattr *nl_freq; 5185 int rem_freq, idx; 5186 5187 if (tb == NULL) 5188 return NL_OK; 5189 5190 nla_for_each_nested(nl_freq, tb, rem_freq) { 5191 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, 5192 nla_data(nl_freq), nla_len(nl_freq), freq_policy); 5193 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 5194 continue; 5195 new_channels++; 5196 } 5197 5198 channel = os_realloc_array(mode->channels, 5199 mode->num_channels + new_channels, 5200 sizeof(struct hostapd_channel_data)); 5201 if (!channel) 5202 return NL_SKIP; 5203 5204 mode->channels = channel; 5205 mode->num_channels += new_channels; 5206 5207 idx = phy_info->last_chan_idx; 5208 5209 nla_for_each_nested(nl_freq, tb, rem_freq) { 5210 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, 5211 nla_data(nl_freq), nla_len(nl_freq), freq_policy); 5212 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 5213 continue; 5214 phy_info_freq(mode, &mode->channels[idx], tb_freq); 5215 idx++; 5216 } 5217 phy_info->last_chan_idx = idx; 5218 5219 return NL_OK; 5220} 5221 5222 5223static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb) 5224{ 5225 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = { 5226 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 }, 5227 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = 5228 { .type = NLA_FLAG }, 5229 }; 5230 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1]; 5231 struct nlattr *nl_rate; 5232 int rem_rate, idx; 5233 5234 if (tb == NULL) 5235 return NL_OK; 5236 5237 nla_for_each_nested(nl_rate, tb, rem_rate) { 5238 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, 5239 nla_data(nl_rate), nla_len(nl_rate), 5240 rate_policy); 5241 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 5242 continue; 5243 mode->num_rates++; 5244 } 5245 5246 mode->rates = os_calloc(mode->num_rates, sizeof(int)); 5247 if (!mode->rates) 5248 return NL_SKIP; 5249 5250 idx = 0; 5251 5252 nla_for_each_nested(nl_rate, tb, rem_rate) { 5253 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, 5254 nla_data(nl_rate), nla_len(nl_rate), 5255 rate_policy); 5256 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 5257 continue; 5258 mode->rates[idx] = nla_get_u32( 5259 tb_rate[NL80211_BITRATE_ATTR_RATE]); 5260 idx++; 5261 } 5262 5263 return NL_OK; 5264} 5265 5266 5267static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band) 5268{ 5269 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1]; 5270 struct hostapd_hw_modes *mode; 5271 int ret; 5272 5273 if (phy_info->last_mode != nl_band->nla_type) { 5274 mode = os_realloc_array(phy_info->modes, 5275 *phy_info->num_modes + 1, 5276 sizeof(*mode)); 5277 if (!mode) 5278 return NL_SKIP; 5279 phy_info->modes = mode; 5280 5281 mode = &phy_info->modes[*(phy_info->num_modes)]; 5282 os_memset(mode, 0, sizeof(*mode)); 5283 mode->mode = NUM_HOSTAPD_MODES; 5284 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN; 5285 *(phy_info->num_modes) += 1; 5286 phy_info->last_mode = nl_band->nla_type; 5287 phy_info->last_chan_idx = 0; 5288 } else 5289 mode = &phy_info->modes[*(phy_info->num_modes) - 1]; 5290 5291 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band), 5292 nla_len(nl_band), NULL); 5293 5294 phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA], 5295 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR], 5296 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY], 5297 tb_band[NL80211_BAND_ATTR_HT_MCS_SET]); 5298 phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA], 5299 tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]); 5300 ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]); 5301 if (ret != NL_OK) 5302 return ret; 5303 ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]); 5304 if (ret != NL_OK) 5305 return ret; 5306 5307 return NL_OK; 5308} 5309 5310 5311static int phy_info_handler(struct nl_msg *msg, void *arg) 5312{ 5313 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 5314 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 5315 struct phy_info_arg *phy_info = arg; 5316 struct nlattr *nl_band; 5317 int rem_band; 5318 5319 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5320 genlmsg_attrlen(gnlh, 0), NULL); 5321 5322 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS]) 5323 return NL_SKIP; 5324 5325 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) 5326 { 5327 int res = phy_info_band(phy_info, nl_band); 5328 if (res != NL_OK) 5329 return res; 5330 } 5331 5332 return NL_SKIP; 5333} 5334 5335 5336static struct hostapd_hw_modes * 5337wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes *modes, 5338 u16 *num_modes) 5339{ 5340 u16 m; 5341 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode; 5342 int i, mode11g_idx = -1; 5343 5344 /* heuristic to set up modes */ 5345 for (m = 0; m < *num_modes; m++) { 5346 if (!modes[m].num_channels) 5347 continue; 5348 if (modes[m].channels[0].freq < 4000) { 5349 modes[m].mode = HOSTAPD_MODE_IEEE80211B; 5350 for (i = 0; i < modes[m].num_rates; i++) { 5351 if (modes[m].rates[i] > 200) { 5352 modes[m].mode = HOSTAPD_MODE_IEEE80211G; 5353 break; 5354 } 5355 } 5356 } else if (modes[m].channels[0].freq > 50000) 5357 modes[m].mode = HOSTAPD_MODE_IEEE80211AD; 5358 else 5359 modes[m].mode = HOSTAPD_MODE_IEEE80211A; 5360 } 5361 5362 /* If only 802.11g mode is included, use it to construct matching 5363 * 802.11b mode data. */ 5364 5365 for (m = 0; m < *num_modes; m++) { 5366 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B) 5367 return modes; /* 802.11b already included */ 5368 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G) 5369 mode11g_idx = m; 5370 } 5371 5372 if (mode11g_idx < 0) 5373 return modes; /* 2.4 GHz band not supported at all */ 5374 5375 nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes)); 5376 if (nmodes == NULL) 5377 return modes; /* Could not add 802.11b mode */ 5378 5379 mode = &nmodes[*num_modes]; 5380 os_memset(mode, 0, sizeof(*mode)); 5381 (*num_modes)++; 5382 modes = nmodes; 5383 5384 mode->mode = HOSTAPD_MODE_IEEE80211B; 5385 5386 mode11g = &modes[mode11g_idx]; 5387 mode->num_channels = mode11g->num_channels; 5388 mode->channels = os_malloc(mode11g->num_channels * 5389 sizeof(struct hostapd_channel_data)); 5390 if (mode->channels == NULL) { 5391 (*num_modes)--; 5392 return modes; /* Could not add 802.11b mode */ 5393 } 5394 os_memcpy(mode->channels, mode11g->channels, 5395 mode11g->num_channels * sizeof(struct hostapd_channel_data)); 5396 5397 mode->num_rates = 0; 5398 mode->rates = os_malloc(4 * sizeof(int)); 5399 if (mode->rates == NULL) { 5400 os_free(mode->channels); 5401 (*num_modes)--; 5402 return modes; /* Could not add 802.11b mode */ 5403 } 5404 5405 for (i = 0; i < mode11g->num_rates; i++) { 5406 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 && 5407 mode11g->rates[i] != 55 && mode11g->rates[i] != 110) 5408 continue; 5409 mode->rates[mode->num_rates] = mode11g->rates[i]; 5410 mode->num_rates++; 5411 if (mode->num_rates == 4) 5412 break; 5413 } 5414 5415 if (mode->num_rates == 0) { 5416 os_free(mode->channels); 5417 os_free(mode->rates); 5418 (*num_modes)--; 5419 return modes; /* No 802.11b rates */ 5420 } 5421 5422 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g " 5423 "information"); 5424 5425 return modes; 5426} 5427 5428 5429static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start, 5430 int end) 5431{ 5432 int c; 5433 5434 for (c = 0; c < mode->num_channels; c++) { 5435 struct hostapd_channel_data *chan = &mode->channels[c]; 5436 if (chan->freq - 10 >= start && chan->freq + 10 <= end) 5437 chan->flag |= HOSTAPD_CHAN_HT40; 5438 } 5439} 5440 5441 5442static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start, 5443 int end) 5444{ 5445 int c; 5446 5447 for (c = 0; c < mode->num_channels; c++) { 5448 struct hostapd_channel_data *chan = &mode->channels[c]; 5449 if (!(chan->flag & HOSTAPD_CHAN_HT40)) 5450 continue; 5451 if (chan->freq - 30 >= start && chan->freq - 10 <= end) 5452 chan->flag |= HOSTAPD_CHAN_HT40MINUS; 5453 if (chan->freq + 10 >= start && chan->freq + 30 <= end) 5454 chan->flag |= HOSTAPD_CHAN_HT40PLUS; 5455 } 5456} 5457 5458 5459static void nl80211_reg_rule_ht40(struct nlattr *tb[], 5460 struct phy_info_arg *results) 5461{ 5462 u32 start, end, max_bw; 5463 u16 m; 5464 5465 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 5466 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 5467 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 5468 return; 5469 5470 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 5471 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 5472 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 5473 5474 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz", 5475 start, end, max_bw); 5476 if (max_bw < 40) 5477 return; 5478 5479 for (m = 0; m < *results->num_modes; m++) { 5480 if (!(results->modes[m].ht_capab & 5481 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 5482 continue; 5483 nl80211_set_ht40_mode(&results->modes[m], start, end); 5484 } 5485} 5486 5487 5488static void nl80211_reg_rule_sec(struct nlattr *tb[], 5489 struct phy_info_arg *results) 5490{ 5491 u32 start, end, max_bw; 5492 u16 m; 5493 5494 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 5495 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 5496 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 5497 return; 5498 5499 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 5500 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 5501 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 5502 5503 if (max_bw < 20) 5504 return; 5505 5506 for (m = 0; m < *results->num_modes; m++) { 5507 if (!(results->modes[m].ht_capab & 5508 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 5509 continue; 5510 nl80211_set_ht40_mode_sec(&results->modes[m], start, end); 5511 } 5512} 5513 5514 5515static int nl80211_get_reg(struct nl_msg *msg, void *arg) 5516{ 5517 struct phy_info_arg *results = arg; 5518 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 5519 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 5520 struct nlattr *nl_rule; 5521 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1]; 5522 int rem_rule; 5523 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 5524 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 5525 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 5526 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 5527 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 5528 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 5529 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 5530 }; 5531 5532 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5533 genlmsg_attrlen(gnlh, 0), NULL); 5534 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] || 5535 !tb_msg[NL80211_ATTR_REG_RULES]) { 5536 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information " 5537 "available"); 5538 return NL_SKIP; 5539 } 5540 5541 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s", 5542 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2])); 5543 5544 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 5545 { 5546 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 5547 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 5548 nl80211_reg_rule_ht40(tb_rule, results); 5549 } 5550 5551 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 5552 { 5553 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 5554 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 5555 nl80211_reg_rule_sec(tb_rule, results); 5556 } 5557 5558 return NL_SKIP; 5559} 5560 5561 5562static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv, 5563 struct phy_info_arg *results) 5564{ 5565 struct nl_msg *msg; 5566 5567 msg = nlmsg_alloc(); 5568 if (!msg) 5569 return -ENOMEM; 5570 5571 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG); 5572 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results); 5573} 5574 5575 5576static struct hostapd_hw_modes * 5577wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags) 5578{ 5579 u32 feat; 5580 struct i802_bss *bss = priv; 5581 struct wpa_driver_nl80211_data *drv = bss->drv; 5582 struct nl_msg *msg; 5583 struct phy_info_arg result = { 5584 .num_modes = num_modes, 5585 .modes = NULL, 5586 .last_mode = -1, 5587 }; 5588 5589 *num_modes = 0; 5590 *flags = 0; 5591 5592 msg = nlmsg_alloc(); 5593 if (!msg) 5594 return NULL; 5595 5596 feat = get_nl80211_protocol_features(drv); 5597 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) 5598 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_WIPHY); 5599 else 5600 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 5601 5602 NLA_PUT_FLAG(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP); 5603 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5604 5605 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) { 5606 nl80211_set_ht40_flags(drv, &result); 5607 return wpa_driver_nl80211_postprocess_modes(result.modes, 5608 num_modes); 5609 } 5610 msg = NULL; 5611 nla_put_failure: 5612 nlmsg_free(msg); 5613 return NULL; 5614} 5615 5616 5617static int wpa_driver_nl80211_send_mntr(struct wpa_driver_nl80211_data *drv, 5618 const void *data, size_t len, 5619 int encrypt, int noack) 5620{ 5621 __u8 rtap_hdr[] = { 5622 0x00, 0x00, /* radiotap version */ 5623 0x0e, 0x00, /* radiotap length */ 5624 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */ 5625 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */ 5626 0x00, /* padding */ 5627 0x00, 0x00, /* RX and TX flags to indicate that */ 5628 0x00, 0x00, /* this is the injected frame directly */ 5629 }; 5630 struct iovec iov[2] = { 5631 { 5632 .iov_base = &rtap_hdr, 5633 .iov_len = sizeof(rtap_hdr), 5634 }, 5635 { 5636 .iov_base = (void *) data, 5637 .iov_len = len, 5638 } 5639 }; 5640 struct msghdr msg = { 5641 .msg_name = NULL, 5642 .msg_namelen = 0, 5643 .msg_iov = iov, 5644 .msg_iovlen = 2, 5645 .msg_control = NULL, 5646 .msg_controllen = 0, 5647 .msg_flags = 0, 5648 }; 5649 int res; 5650 u16 txflags = 0; 5651 5652 if (encrypt) 5653 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP; 5654 5655 if (drv->monitor_sock < 0) { 5656 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available " 5657 "for %s", __func__); 5658 return -1; 5659 } 5660 5661 if (noack) 5662 txflags |= IEEE80211_RADIOTAP_F_TX_NOACK; 5663 WPA_PUT_LE16(&rtap_hdr[12], txflags); 5664 5665 res = sendmsg(drv->monitor_sock, &msg, 0); 5666 if (res < 0) { 5667 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno)); 5668 return -1; 5669 } 5670 return 0; 5671} 5672 5673 5674static int wpa_driver_nl80211_send_frame(struct i802_bss *bss, 5675 const void *data, size_t len, 5676 int encrypt, int noack, 5677 unsigned int freq, int no_cck, 5678 int offchanok, unsigned int wait_time) 5679{ 5680 struct wpa_driver_nl80211_data *drv = bss->drv; 5681 u64 cookie; 5682 5683 if (freq == 0) 5684 freq = bss->freq; 5685 5686 if (drv->use_monitor) 5687 return wpa_driver_nl80211_send_mntr(drv, data, len, 5688 encrypt, noack); 5689 5690 return nl80211_send_frame_cmd(bss, freq, wait_time, data, len, 5691 &cookie, no_cck, noack, offchanok); 5692} 5693 5694 5695static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data, 5696 size_t data_len, int noack, 5697 unsigned int freq, int no_cck, 5698 int offchanok, 5699 unsigned int wait_time) 5700{ 5701 struct wpa_driver_nl80211_data *drv = bss->drv; 5702 struct ieee80211_mgmt *mgmt; 5703 int encrypt = 1; 5704 u16 fc; 5705 5706 mgmt = (struct ieee80211_mgmt *) data; 5707 fc = le_to_host16(mgmt->frame_control); 5708 5709 if (is_sta_interface(drv->nlmode) && 5710 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 5711 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) { 5712 /* 5713 * The use of last_mgmt_freq is a bit of a hack, 5714 * but it works due to the single-threaded nature 5715 * of wpa_supplicant. 5716 */ 5717 if (freq == 0) 5718 freq = drv->last_mgmt_freq; 5719 return nl80211_send_frame_cmd(bss, freq, 0, 5720 data, data_len, NULL, 1, noack, 5721 1); 5722 } 5723 5724 if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) { 5725 if (freq == 0) 5726 freq = bss->freq; 5727 return nl80211_send_frame_cmd(bss, freq, 5728 (int) freq == bss->freq ? 0 : 5729 wait_time, 5730 data, data_len, 5731 &drv->send_action_cookie, 5732 no_cck, noack, offchanok); 5733 } 5734 5735 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 5736 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) { 5737 /* 5738 * Only one of the authentication frame types is encrypted. 5739 * In order for static WEP encryption to work properly (i.e., 5740 * to not encrypt the frame), we need to tell mac80211 about 5741 * the frames that must not be encrypted. 5742 */ 5743 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg); 5744 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction); 5745 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3) 5746 encrypt = 0; 5747 } 5748 5749 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 5750 noack, freq, no_cck, offchanok, 5751 wait_time); 5752} 5753 5754 5755static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble, 5756 int slot, int ht_opmode, int ap_isolate, 5757 int *basic_rates) 5758{ 5759 struct wpa_driver_nl80211_data *drv = bss->drv; 5760 struct nl_msg *msg; 5761 5762 msg = nlmsg_alloc(); 5763 if (!msg) 5764 return -ENOMEM; 5765 5766 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS); 5767 5768 if (cts >= 0) 5769 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts); 5770 if (preamble >= 0) 5771 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble); 5772 if (slot >= 0) 5773 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot); 5774 if (ht_opmode >= 0) 5775 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode); 5776 if (ap_isolate >= 0) 5777 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate); 5778 5779 if (basic_rates) { 5780 u8 rates[NL80211_MAX_SUPP_RATES]; 5781 u8 rates_len = 0; 5782 int i; 5783 5784 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; 5785 i++) 5786 rates[rates_len++] = basic_rates[i] / 5; 5787 5788 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates); 5789 } 5790 5791 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 5792 5793 return send_and_recv_msgs(drv, msg, NULL, NULL); 5794 nla_put_failure: 5795 nlmsg_free(msg); 5796 return -ENOBUFS; 5797} 5798 5799 5800static int wpa_driver_nl80211_set_ap(void *priv, 5801 struct wpa_driver_ap_params *params) 5802{ 5803 struct i802_bss *bss = priv; 5804 struct wpa_driver_nl80211_data *drv = bss->drv; 5805 struct nl_msg *msg; 5806 u8 cmd = NL80211_CMD_NEW_BEACON; 5807 int ret; 5808 int beacon_set; 5809 int ifindex = if_nametoindex(bss->ifname); 5810 int num_suites; 5811 u32 suites[10]; 5812 u32 ver; 5813 5814 beacon_set = bss->beacon_set; 5815 5816 msg = nlmsg_alloc(); 5817 if (!msg) 5818 return -ENOMEM; 5819 5820 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)", 5821 beacon_set); 5822 if (beacon_set) 5823 cmd = NL80211_CMD_SET_BEACON; 5824 5825 nl80211_cmd(drv, msg, 0, cmd); 5826 wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head", 5827 params->head, params->head_len); 5828 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head); 5829 wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail", 5830 params->tail, params->tail_len); 5831 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail); 5832 wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", ifindex); 5833 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 5834 wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int); 5835 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int); 5836 wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period); 5837 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period); 5838 wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid", 5839 params->ssid, params->ssid_len); 5840 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 5841 params->ssid); 5842 if (params->proberesp && params->proberesp_len) { 5843 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)", 5844 params->proberesp, params->proberesp_len); 5845 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len, 5846 params->proberesp); 5847 } 5848 switch (params->hide_ssid) { 5849 case NO_SSID_HIDING: 5850 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use"); 5851 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5852 NL80211_HIDDEN_SSID_NOT_IN_USE); 5853 break; 5854 case HIDDEN_SSID_ZERO_LEN: 5855 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len"); 5856 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5857 NL80211_HIDDEN_SSID_ZERO_LEN); 5858 break; 5859 case HIDDEN_SSID_ZERO_CONTENTS: 5860 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents"); 5861 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5862 NL80211_HIDDEN_SSID_ZERO_CONTENTS); 5863 break; 5864 } 5865 wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy); 5866 if (params->privacy) 5867 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 5868 wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs); 5869 if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) == 5870 (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) { 5871 /* Leave out the attribute */ 5872 } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) 5873 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 5874 NL80211_AUTHTYPE_SHARED_KEY); 5875 else 5876 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 5877 NL80211_AUTHTYPE_OPEN_SYSTEM); 5878 5879 wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version); 5880 ver = 0; 5881 if (params->wpa_version & WPA_PROTO_WPA) 5882 ver |= NL80211_WPA_VERSION_1; 5883 if (params->wpa_version & WPA_PROTO_RSN) 5884 ver |= NL80211_WPA_VERSION_2; 5885 if (ver) 5886 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 5887 5888 wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x", 5889 params->key_mgmt_suites); 5890 num_suites = 0; 5891 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X) 5892 suites[num_suites++] = WLAN_AKM_SUITE_8021X; 5893 if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK) 5894 suites[num_suites++] = WLAN_AKM_SUITE_PSK; 5895 if (num_suites) { 5896 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES, 5897 num_suites * sizeof(u32), suites); 5898 } 5899 5900 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X && 5901 params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40)) 5902 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT); 5903 5904 wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x", 5905 params->pairwise_ciphers); 5906 num_suites = 0; 5907 if (params->pairwise_ciphers & WPA_CIPHER_CCMP) 5908 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP; 5909 if (params->pairwise_ciphers & WPA_CIPHER_GCMP) 5910 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP; 5911 if (params->pairwise_ciphers & WPA_CIPHER_TKIP) 5912 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP; 5913 if (params->pairwise_ciphers & WPA_CIPHER_WEP104) 5914 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104; 5915 if (params->pairwise_ciphers & WPA_CIPHER_WEP40) 5916 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40; 5917 if (num_suites) { 5918 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, 5919 num_suites * sizeof(u32), suites); 5920 } 5921 5922 wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x", 5923 params->group_cipher); 5924 switch (params->group_cipher) { 5925 case WPA_CIPHER_CCMP: 5926 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5927 WLAN_CIPHER_SUITE_CCMP); 5928 break; 5929 case WPA_CIPHER_GCMP: 5930 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5931 WLAN_CIPHER_SUITE_GCMP); 5932 break; 5933 case WPA_CIPHER_TKIP: 5934 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5935 WLAN_CIPHER_SUITE_TKIP); 5936 break; 5937 case WPA_CIPHER_WEP104: 5938 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5939 WLAN_CIPHER_SUITE_WEP104); 5940 break; 5941 case WPA_CIPHER_WEP40: 5942 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5943 WLAN_CIPHER_SUITE_WEP40); 5944 break; 5945 } 5946 5947 if (params->beacon_ies) { 5948 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies", 5949 params->beacon_ies); 5950 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies), 5951 wpabuf_head(params->beacon_ies)); 5952 } 5953 if (params->proberesp_ies) { 5954 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies", 5955 params->proberesp_ies); 5956 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP, 5957 wpabuf_len(params->proberesp_ies), 5958 wpabuf_head(params->proberesp_ies)); 5959 } 5960 if (params->assocresp_ies) { 5961 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies", 5962 params->assocresp_ies); 5963 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP, 5964 wpabuf_len(params->assocresp_ies), 5965 wpabuf_head(params->assocresp_ies)); 5966 } 5967 5968 if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER) { 5969 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d", 5970 params->ap_max_inactivity); 5971 NLA_PUT_U16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT, 5972 params->ap_max_inactivity); 5973 } 5974 5975 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5976 if (ret) { 5977 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)", 5978 ret, strerror(-ret)); 5979 } else { 5980 bss->beacon_set = 1; 5981 nl80211_set_bss(bss, params->cts_protect, params->preamble, 5982 params->short_slot_time, params->ht_opmode, 5983 params->isolate, params->basic_rates); 5984 } 5985 return ret; 5986 nla_put_failure: 5987 nlmsg_free(msg); 5988 return -ENOBUFS; 5989} 5990 5991 5992static int wpa_driver_nl80211_set_freq(struct i802_bss *bss, 5993 struct hostapd_freq_params *freq) 5994{ 5995 struct wpa_driver_nl80211_data *drv = bss->drv; 5996 struct nl_msg *msg; 5997 int ret; 5998 5999 wpa_printf(MSG_DEBUG, "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d," 6000 " bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)", 6001 freq->freq, freq->ht_enabled, freq->vht_enabled, 6002 freq->bandwidth, freq->center_freq1, freq->center_freq2); 6003 msg = nlmsg_alloc(); 6004 if (!msg) 6005 return -1; 6006 6007 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 6008 6009 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6010 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq); 6011 if (freq->vht_enabled) { 6012 switch (freq->bandwidth) { 6013 case 20: 6014 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 6015 NL80211_CHAN_WIDTH_20); 6016 break; 6017 case 40: 6018 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 6019 NL80211_CHAN_WIDTH_40); 6020 break; 6021 case 80: 6022 if (freq->center_freq2) 6023 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 6024 NL80211_CHAN_WIDTH_80P80); 6025 else 6026 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 6027 NL80211_CHAN_WIDTH_80); 6028 break; 6029 case 160: 6030 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 6031 NL80211_CHAN_WIDTH_160); 6032 break; 6033 default: 6034 return -1; 6035 } 6036 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1, freq->center_freq1); 6037 if (freq->center_freq2) 6038 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ2, 6039 freq->center_freq2); 6040 } else if (freq->ht_enabled) { 6041 switch (freq->sec_channel_offset) { 6042 case -1: 6043 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 6044 NL80211_CHAN_HT40MINUS); 6045 break; 6046 case 1: 6047 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 6048 NL80211_CHAN_HT40PLUS); 6049 break; 6050 default: 6051 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 6052 NL80211_CHAN_HT20); 6053 break; 6054 } 6055 } 6056 6057 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6058 msg = NULL; 6059 if (ret == 0) { 6060 bss->freq = freq->freq; 6061 return 0; 6062 } 6063 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): " 6064 "%d (%s)", freq->freq, ret, strerror(-ret)); 6065nla_put_failure: 6066 nlmsg_free(msg); 6067 return -1; 6068} 6069 6070 6071static u32 sta_flags_nl80211(int flags) 6072{ 6073 u32 f = 0; 6074 6075 if (flags & WPA_STA_AUTHORIZED) 6076 f |= BIT(NL80211_STA_FLAG_AUTHORIZED); 6077 if (flags & WPA_STA_WMM) 6078 f |= BIT(NL80211_STA_FLAG_WME); 6079 if (flags & WPA_STA_SHORT_PREAMBLE) 6080 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 6081 if (flags & WPA_STA_MFP) 6082 f |= BIT(NL80211_STA_FLAG_MFP); 6083 if (flags & WPA_STA_TDLS_PEER) 6084 f |= BIT(NL80211_STA_FLAG_TDLS_PEER); 6085 6086 return f; 6087} 6088 6089 6090static int wpa_driver_nl80211_sta_add(void *priv, 6091 struct hostapd_sta_add_params *params) 6092{ 6093 struct i802_bss *bss = priv; 6094 struct wpa_driver_nl80211_data *drv = bss->drv; 6095 struct nl_msg *msg; 6096 struct nl80211_sta_flag_update upd; 6097 int ret = -ENOBUFS; 6098 6099 if ((params->flags & WPA_STA_TDLS_PEER) && 6100 !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 6101 return -EOPNOTSUPP; 6102 6103 msg = nlmsg_alloc(); 6104 if (!msg) 6105 return -ENOMEM; 6106 6107 wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR, 6108 params->set ? "Set" : "Add", MAC2STR(params->addr)); 6109 nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION : 6110 NL80211_CMD_NEW_STATION); 6111 6112 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 6113 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr); 6114 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len, 6115 params->supp_rates); 6116 wpa_hexdump(MSG_DEBUG, " * supported rates", params->supp_rates, 6117 params->supp_rates_len); 6118 if (!params->set) { 6119 wpa_printf(MSG_DEBUG, " * aid=%u", params->aid); 6120 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid); 6121 wpa_printf(MSG_DEBUG, " * listen_interval=%u", 6122 params->listen_interval); 6123 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL, 6124 params->listen_interval); 6125 } 6126 if (params->ht_capabilities) { 6127 wpa_hexdump(MSG_DEBUG, " * ht_capabilities", 6128 (u8 *) params->ht_capabilities, 6129 sizeof(*params->ht_capabilities)); 6130 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, 6131 sizeof(*params->ht_capabilities), 6132 params->ht_capabilities); 6133 } 6134 6135 if (params->vht_capabilities) { 6136 wpa_hexdump(MSG_DEBUG, " * vht_capabilities", 6137 (u8 *) params->vht_capabilities, 6138 sizeof(*params->vht_capabilities)); 6139 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, 6140 sizeof(*params->vht_capabilities), 6141 params->vht_capabilities); 6142 } 6143 6144 wpa_printf(MSG_DEBUG, " * capability=0x%x", params->capability); 6145 NLA_PUT_U16(msg, NL80211_ATTR_STA_CAPABILITY, params->capability); 6146 6147 if (params->ext_capab) { 6148 wpa_hexdump(MSG_DEBUG, " * ext_capab", 6149 params->ext_capab, params->ext_capab_len); 6150 NLA_PUT(msg, NL80211_ATTR_STA_EXT_CAPABILITY, 6151 params->ext_capab_len, params->ext_capab); 6152 } 6153 6154 os_memset(&upd, 0, sizeof(upd)); 6155 upd.mask = sta_flags_nl80211(params->flags); 6156 upd.set = upd.mask; 6157 wpa_printf(MSG_DEBUG, " * flags set=0x%x mask=0x%x", 6158 upd.set, upd.mask); 6159 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 6160 6161 if (params->flags & WPA_STA_WMM) { 6162 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME); 6163 6164 if (!wme) 6165 goto nla_put_failure; 6166 6167 wpa_printf(MSG_DEBUG, " * qosinfo=0x%x", params->qosinfo); 6168 NLA_PUT_U8(msg, NL80211_STA_WME_UAPSD_QUEUES, 6169 params->qosinfo & WMM_QOSINFO_STA_AC_MASK); 6170 NLA_PUT_U8(msg, NL80211_STA_WME_MAX_SP, 6171 (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) & 6172 WMM_QOSINFO_STA_SP_MASK); 6173 nla_nest_end(msg, wme); 6174 } 6175 6176 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6177 msg = NULL; 6178 if (ret) 6179 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION " 6180 "result: %d (%s)", params->set ? "SET" : "NEW", ret, 6181 strerror(-ret)); 6182 if (ret == -EEXIST) 6183 ret = 0; 6184 nla_put_failure: 6185 nlmsg_free(msg); 6186 return ret; 6187} 6188 6189 6190static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr) 6191{ 6192 struct wpa_driver_nl80211_data *drv = bss->drv; 6193 struct nl_msg *msg; 6194 int ret; 6195 6196 msg = nlmsg_alloc(); 6197 if (!msg) 6198 return -ENOMEM; 6199 6200 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 6201 6202 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 6203 if_nametoindex(bss->ifname)); 6204 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 6205 6206 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6207 if (ret == -ENOENT) 6208 return 0; 6209 return ret; 6210 nla_put_failure: 6211 nlmsg_free(msg); 6212 return -ENOBUFS; 6213} 6214 6215 6216static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, 6217 int ifidx) 6218{ 6219 struct nl_msg *msg; 6220 6221 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx); 6222 6223 /* stop listening for EAPOL on this interface */ 6224 del_ifidx(drv, ifidx); 6225 6226 msg = nlmsg_alloc(); 6227 if (!msg) 6228 goto nla_put_failure; 6229 6230 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE); 6231 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx); 6232 6233 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 6234 return; 6235 msg = NULL; 6236 nla_put_failure: 6237 nlmsg_free(msg); 6238 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx); 6239} 6240 6241 6242static const char * nl80211_iftype_str(enum nl80211_iftype mode) 6243{ 6244 switch (mode) { 6245 case NL80211_IFTYPE_ADHOC: 6246 return "ADHOC"; 6247 case NL80211_IFTYPE_STATION: 6248 return "STATION"; 6249 case NL80211_IFTYPE_AP: 6250 return "AP"; 6251 case NL80211_IFTYPE_MONITOR: 6252 return "MONITOR"; 6253 case NL80211_IFTYPE_P2P_CLIENT: 6254 return "P2P_CLIENT"; 6255 case NL80211_IFTYPE_P2P_GO: 6256 return "P2P_GO"; 6257 default: 6258 return "unknown"; 6259 } 6260} 6261 6262 6263static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv, 6264 const char *ifname, 6265 enum nl80211_iftype iftype, 6266 const u8 *addr, int wds) 6267{ 6268 struct nl_msg *msg; 6269 int ifidx; 6270 int ret = -ENOBUFS; 6271 6272 wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)", 6273 iftype, nl80211_iftype_str(iftype)); 6274 6275 msg = nlmsg_alloc(); 6276 if (!msg) 6277 return -1; 6278 6279 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE); 6280 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6281 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname); 6282 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype); 6283 6284 if (iftype == NL80211_IFTYPE_MONITOR) { 6285 struct nlattr *flags; 6286 6287 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS); 6288 if (!flags) 6289 goto nla_put_failure; 6290 6291 NLA_PUT_FLAG(msg, NL80211_MNTR_FLAG_COOK_FRAMES); 6292 6293 nla_nest_end(msg, flags); 6294 } else if (wds) { 6295 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds); 6296 } 6297 6298 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6299 msg = NULL; 6300 if (ret) { 6301 nla_put_failure: 6302 nlmsg_free(msg); 6303 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)", 6304 ifname, ret, strerror(-ret)); 6305 return ret; 6306 } 6307 6308 ifidx = if_nametoindex(ifname); 6309 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d", 6310 ifname, ifidx); 6311 6312 if (ifidx <= 0) 6313 return -1; 6314 6315 /* start listening for EAPOL on this interface */ 6316 add_ifidx(drv, ifidx); 6317 6318 if (addr && iftype != NL80211_IFTYPE_MONITOR && 6319 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) { 6320 nl80211_remove_iface(drv, ifidx); 6321 return -1; 6322 } 6323 6324 return ifidx; 6325} 6326 6327 6328static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv, 6329 const char *ifname, enum nl80211_iftype iftype, 6330 const u8 *addr, int wds) 6331{ 6332 int ret; 6333 6334 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds); 6335 6336 /* if error occurred and interface exists already */ 6337 if (ret == -ENFILE && if_nametoindex(ifname)) { 6338 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname); 6339 6340 /* Try to remove the interface that was already there. */ 6341 nl80211_remove_iface(drv, if_nametoindex(ifname)); 6342 6343 /* Try to create the interface again */ 6344 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, 6345 wds); 6346 } 6347 6348 if (ret >= 0 && is_p2p_interface(iftype)) 6349 nl80211_disable_11b_rates(drv, ret, 1); 6350 6351 return ret; 6352} 6353 6354 6355static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok) 6356{ 6357 struct ieee80211_hdr *hdr; 6358 u16 fc; 6359 union wpa_event_data event; 6360 6361 hdr = (struct ieee80211_hdr *) buf; 6362 fc = le_to_host16(hdr->frame_control); 6363 6364 os_memset(&event, 0, sizeof(event)); 6365 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 6366 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 6367 event.tx_status.dst = hdr->addr1; 6368 event.tx_status.data = buf; 6369 event.tx_status.data_len = len; 6370 event.tx_status.ack = ok; 6371 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event); 6372} 6373 6374 6375static void from_unknown_sta(struct wpa_driver_nl80211_data *drv, 6376 u8 *buf, size_t len) 6377{ 6378 struct ieee80211_hdr *hdr = (void *)buf; 6379 u16 fc; 6380 union wpa_event_data event; 6381 6382 if (len < sizeof(*hdr)) 6383 return; 6384 6385 fc = le_to_host16(hdr->frame_control); 6386 6387 os_memset(&event, 0, sizeof(event)); 6388 event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len); 6389 event.rx_from_unknown.addr = hdr->addr2; 6390 event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) == 6391 (WLAN_FC_FROMDS | WLAN_FC_TODS); 6392 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 6393} 6394 6395 6396static void handle_frame(struct wpa_driver_nl80211_data *drv, 6397 u8 *buf, size_t len, int datarate, int ssi_signal) 6398{ 6399 struct ieee80211_hdr *hdr; 6400 u16 fc; 6401 union wpa_event_data event; 6402 6403 hdr = (struct ieee80211_hdr *) buf; 6404 fc = le_to_host16(hdr->frame_control); 6405 6406 switch (WLAN_FC_GET_TYPE(fc)) { 6407 case WLAN_FC_TYPE_MGMT: 6408 os_memset(&event, 0, sizeof(event)); 6409 event.rx_mgmt.frame = buf; 6410 event.rx_mgmt.frame_len = len; 6411 event.rx_mgmt.datarate = datarate; 6412 event.rx_mgmt.ssi_signal = ssi_signal; 6413 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 6414 break; 6415 case WLAN_FC_TYPE_CTRL: 6416 /* can only get here with PS-Poll frames */ 6417 wpa_printf(MSG_DEBUG, "CTRL"); 6418 from_unknown_sta(drv, buf, len); 6419 break; 6420 case WLAN_FC_TYPE_DATA: 6421 from_unknown_sta(drv, buf, len); 6422 break; 6423 } 6424} 6425 6426 6427static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx) 6428{ 6429 struct wpa_driver_nl80211_data *drv = eloop_ctx; 6430 int len; 6431 unsigned char buf[3000]; 6432 struct ieee80211_radiotap_iterator iter; 6433 int ret; 6434 int datarate = 0, ssi_signal = 0; 6435 int injected = 0, failed = 0, rxflags = 0; 6436 6437 len = recv(sock, buf, sizeof(buf), 0); 6438 if (len < 0) { 6439 perror("recv"); 6440 return; 6441 } 6442 6443 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) { 6444 printf("received invalid radiotap frame\n"); 6445 return; 6446 } 6447 6448 while (1) { 6449 ret = ieee80211_radiotap_iterator_next(&iter); 6450 if (ret == -ENOENT) 6451 break; 6452 if (ret) { 6453 printf("received invalid radiotap frame (%d)\n", ret); 6454 return; 6455 } 6456 switch (iter.this_arg_index) { 6457 case IEEE80211_RADIOTAP_FLAGS: 6458 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS) 6459 len -= 4; 6460 break; 6461 case IEEE80211_RADIOTAP_RX_FLAGS: 6462 rxflags = 1; 6463 break; 6464 case IEEE80211_RADIOTAP_TX_FLAGS: 6465 injected = 1; 6466 failed = le_to_host16((*(uint16_t *) iter.this_arg)) & 6467 IEEE80211_RADIOTAP_F_TX_FAIL; 6468 break; 6469 case IEEE80211_RADIOTAP_DATA_RETRIES: 6470 break; 6471 case IEEE80211_RADIOTAP_CHANNEL: 6472 /* TODO: convert from freq/flags to channel number */ 6473 break; 6474 case IEEE80211_RADIOTAP_RATE: 6475 datarate = *iter.this_arg * 5; 6476 break; 6477 case IEEE80211_RADIOTAP_DBM_ANTSIGNAL: 6478 ssi_signal = (s8) *iter.this_arg; 6479 break; 6480 } 6481 } 6482 6483 if (rxflags && injected) 6484 return; 6485 6486 if (!injected) 6487 handle_frame(drv, buf + iter.max_length, 6488 len - iter.max_length, datarate, ssi_signal); 6489 else 6490 handle_tx_callback(drv->ctx, buf + iter.max_length, 6491 len - iter.max_length, !failed); 6492} 6493 6494 6495/* 6496 * we post-process the filter code later and rewrite 6497 * this to the offset to the last instruction 6498 */ 6499#define PASS 0xFF 6500#define FAIL 0xFE 6501 6502static struct sock_filter msock_filter_insns[] = { 6503 /* 6504 * do a little-endian load of the radiotap length field 6505 */ 6506 /* load lower byte into A */ 6507 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2), 6508 /* put it into X (== index register) */ 6509 BPF_STMT(BPF_MISC| BPF_TAX, 0), 6510 /* load upper byte into A */ 6511 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3), 6512 /* left-shift it by 8 */ 6513 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8), 6514 /* or with X */ 6515 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0), 6516 /* put result into X */ 6517 BPF_STMT(BPF_MISC| BPF_TAX, 0), 6518 6519 /* 6520 * Allow management frames through, this also gives us those 6521 * management frames that we sent ourselves with status 6522 */ 6523 /* load the lower byte of the IEEE 802.11 frame control field */ 6524 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6525 /* mask off frame type and version */ 6526 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF), 6527 /* accept frame if it's both 0, fall through otherwise */ 6528 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0), 6529 6530 /* 6531 * TODO: add a bit to radiotap RX flags that indicates 6532 * that the sending station is not associated, then 6533 * add a filter here that filters on our DA and that flag 6534 * to allow us to deauth frames to that bad station. 6535 * 6536 * For now allow all To DS data frames through. 6537 */ 6538 /* load the IEEE 802.11 frame control field */ 6539 BPF_STMT(BPF_LD | BPF_H | BPF_IND, 0), 6540 /* mask off frame type, version and DS status */ 6541 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03), 6542 /* accept frame if version 0, type 2 and To DS, fall through otherwise 6543 */ 6544 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0), 6545 6546#if 0 6547 /* 6548 * drop non-data frames 6549 */ 6550 /* load the lower byte of the frame control field */ 6551 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6552 /* mask off QoS bit */ 6553 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c), 6554 /* drop non-data frames */ 6555 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL), 6556#endif 6557 /* load the upper byte of the frame control field */ 6558 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1), 6559 /* mask off toDS/fromDS */ 6560 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03), 6561 /* accept WDS frames */ 6562 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0), 6563 6564 /* 6565 * add header length to index 6566 */ 6567 /* load the lower byte of the frame control field */ 6568 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6569 /* mask off QoS bit */ 6570 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80), 6571 /* right shift it by 6 to give 0 or 2 */ 6572 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6), 6573 /* add data frame header length */ 6574 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24), 6575 /* add index, was start of 802.11 header */ 6576 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0), 6577 /* move to index, now start of LL header */ 6578 BPF_STMT(BPF_MISC | BPF_TAX, 0), 6579 6580 /* 6581 * Accept empty data frames, we use those for 6582 * polling activity. 6583 */ 6584 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0), 6585 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0), 6586 6587 /* 6588 * Accept EAPOL frames 6589 */ 6590 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0), 6591 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL), 6592 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4), 6593 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL), 6594 6595 /* keep these last two statements or change the code below */ 6596 /* return 0 == "DROP" */ 6597 BPF_STMT(BPF_RET | BPF_K, 0), 6598 /* return ~0 == "keep all" */ 6599 BPF_STMT(BPF_RET | BPF_K, ~0), 6600}; 6601 6602static struct sock_fprog msock_filter = { 6603 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]), 6604 .filter = msock_filter_insns, 6605}; 6606 6607 6608static int add_monitor_filter(int s) 6609{ 6610 int idx; 6611 6612 /* rewrite all PASS/FAIL jump offsets */ 6613 for (idx = 0; idx < msock_filter.len; idx++) { 6614 struct sock_filter *insn = &msock_filter_insns[idx]; 6615 6616 if (BPF_CLASS(insn->code) == BPF_JMP) { 6617 if (insn->code == (BPF_JMP|BPF_JA)) { 6618 if (insn->k == PASS) 6619 insn->k = msock_filter.len - idx - 2; 6620 else if (insn->k == FAIL) 6621 insn->k = msock_filter.len - idx - 3; 6622 } 6623 6624 if (insn->jt == PASS) 6625 insn->jt = msock_filter.len - idx - 2; 6626 else if (insn->jt == FAIL) 6627 insn->jt = msock_filter.len - idx - 3; 6628 6629 if (insn->jf == PASS) 6630 insn->jf = msock_filter.len - idx - 2; 6631 else if (insn->jf == FAIL) 6632 insn->jf = msock_filter.len - idx - 3; 6633 } 6634 } 6635 6636 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER, 6637 &msock_filter, sizeof(msock_filter))) { 6638 perror("SO_ATTACH_FILTER"); 6639 return -1; 6640 } 6641 6642 return 0; 6643} 6644 6645 6646static void nl80211_remove_monitor_interface( 6647 struct wpa_driver_nl80211_data *drv) 6648{ 6649 drv->monitor_refcount--; 6650 if (drv->monitor_refcount > 0) 6651 return; 6652 6653 if (drv->monitor_ifidx >= 0) { 6654 nl80211_remove_iface(drv, drv->monitor_ifidx); 6655 drv->monitor_ifidx = -1; 6656 } 6657 if (drv->monitor_sock >= 0) { 6658 eloop_unregister_read_sock(drv->monitor_sock); 6659 close(drv->monitor_sock); 6660 drv->monitor_sock = -1; 6661 } 6662} 6663 6664 6665static int 6666nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv) 6667{ 6668 char buf[IFNAMSIZ]; 6669 struct sockaddr_ll ll; 6670 int optval; 6671 socklen_t optlen; 6672 6673 if (drv->monitor_ifidx >= 0) { 6674 drv->monitor_refcount++; 6675 return 0; 6676 } 6677 6678 if (os_strncmp(drv->first_bss.ifname, "p2p-", 4) == 0) { 6679 /* 6680 * P2P interface name is of the format p2p-%s-%d. For monitor 6681 * interface name corresponding to P2P GO, replace "p2p-" with 6682 * "mon-" to retain the same interface name length and to 6683 * indicate that it is a monitor interface. 6684 */ 6685 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss.ifname + 4); 6686 } else { 6687 /* Non-P2P interface with AP functionality. */ 6688 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname); 6689 } 6690 6691 buf[IFNAMSIZ - 1] = '\0'; 6692 6693 drv->monitor_ifidx = 6694 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL, 6695 0); 6696 6697 if (drv->monitor_ifidx == -EOPNOTSUPP) { 6698 /* 6699 * This is backward compatibility for a few versions of 6700 * the kernel only that didn't advertise the right 6701 * attributes for the only driver that then supported 6702 * AP mode w/o monitor -- ath6kl. 6703 */ 6704 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support " 6705 "monitor interface type - try to run without it"); 6706 drv->device_ap_sme = 1; 6707 } 6708 6709 if (drv->monitor_ifidx < 0) 6710 return -1; 6711 6712 if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1)) 6713 goto error; 6714 6715 memset(&ll, 0, sizeof(ll)); 6716 ll.sll_family = AF_PACKET; 6717 ll.sll_ifindex = drv->monitor_ifidx; 6718 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); 6719 if (drv->monitor_sock < 0) { 6720 perror("socket[PF_PACKET,SOCK_RAW]"); 6721 goto error; 6722 } 6723 6724 if (add_monitor_filter(drv->monitor_sock)) { 6725 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor " 6726 "interface; do filtering in user space"); 6727 /* This works, but will cost in performance. */ 6728 } 6729 6730 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) { 6731 perror("monitor socket bind"); 6732 goto error; 6733 } 6734 6735 optlen = sizeof(optval); 6736 optval = 20; 6737 if (setsockopt 6738 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) { 6739 perror("Failed to set socket priority"); 6740 goto error; 6741 } 6742 6743 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read, 6744 drv, NULL)) { 6745 printf("Could not register monitor read socket\n"); 6746 goto error; 6747 } 6748 6749 return 0; 6750 error: 6751 nl80211_remove_monitor_interface(drv); 6752 return -1; 6753} 6754 6755 6756static int nl80211_setup_ap(struct i802_bss *bss) 6757{ 6758 struct wpa_driver_nl80211_data *drv = bss->drv; 6759 6760 wpa_printf(MSG_DEBUG, "nl80211: Setup AP - device_ap_sme=%d " 6761 "use_monitor=%d", drv->device_ap_sme, drv->use_monitor); 6762 6763 /* 6764 * Disable Probe Request reporting unless we need it in this way for 6765 * devices that include the AP SME, in the other case (unless using 6766 * monitor iface) we'll get it through the nl_mgmt socket instead. 6767 */ 6768 if (!drv->device_ap_sme) 6769 wpa_driver_nl80211_probe_req_report(bss, 0); 6770 6771 if (!drv->device_ap_sme && !drv->use_monitor) 6772 if (nl80211_mgmt_subscribe_ap(bss)) 6773 return -1; 6774 6775 if (drv->device_ap_sme && !drv->use_monitor) 6776 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 6777 return -1; 6778 6779 if (!drv->device_ap_sme && drv->use_monitor && 6780 nl80211_create_monitor_interface(drv) && 6781 !drv->device_ap_sme) 6782 return -1; 6783 6784#ifdef ANDROID_P2P 6785 if (drv->device_ap_sme && drv->use_monitor) 6786 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 6787 return -1; 6788 6789 if (drv->use_monitor && 6790 nl80211_create_monitor_interface(drv)) 6791 return -1; 6792#endif 6793 6794 if (drv->device_ap_sme && 6795 wpa_driver_nl80211_probe_req_report(bss, 1) < 0) { 6796 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable " 6797 "Probe Request frame reporting in AP mode"); 6798 /* Try to survive without this */ 6799 } 6800 6801 return 0; 6802} 6803 6804 6805static void nl80211_teardown_ap(struct i802_bss *bss) 6806{ 6807 struct wpa_driver_nl80211_data *drv = bss->drv; 6808 6809 if (drv->device_ap_sme) { 6810 wpa_driver_nl80211_probe_req_report(bss, 0); 6811 if (!drv->use_monitor) 6812 nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)"); 6813 } else if (drv->use_monitor) 6814 nl80211_remove_monitor_interface(drv); 6815 else 6816 nl80211_mgmt_unsubscribe(bss, "AP teardown"); 6817 6818 bss->beacon_set = 0; 6819} 6820 6821 6822static int nl80211_send_eapol_data(struct i802_bss *bss, 6823 const u8 *addr, const u8 *data, 6824 size_t data_len) 6825{ 6826 struct sockaddr_ll ll; 6827 int ret; 6828 6829 if (bss->drv->eapol_tx_sock < 0) { 6830 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL"); 6831 return -1; 6832 } 6833 6834 os_memset(&ll, 0, sizeof(ll)); 6835 ll.sll_family = AF_PACKET; 6836 ll.sll_ifindex = bss->ifindex; 6837 ll.sll_protocol = htons(ETH_P_PAE); 6838 ll.sll_halen = ETH_ALEN; 6839 os_memcpy(ll.sll_addr, addr, ETH_ALEN); 6840 ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0, 6841 (struct sockaddr *) &ll, sizeof(ll)); 6842 if (ret < 0) 6843 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s", 6844 strerror(errno)); 6845 6846 return ret; 6847} 6848 6849 6850static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 6851 6852static int wpa_driver_nl80211_hapd_send_eapol( 6853 void *priv, const u8 *addr, const u8 *data, 6854 size_t data_len, int encrypt, const u8 *own_addr, u32 flags) 6855{ 6856 struct i802_bss *bss = priv; 6857 struct wpa_driver_nl80211_data *drv = bss->drv; 6858 struct ieee80211_hdr *hdr; 6859 size_t len; 6860 u8 *pos; 6861 int res; 6862 int qos = flags & WPA_STA_WMM; 6863#ifndef ANDROID_P2P 6864 if (drv->device_ap_sme || !drv->use_monitor) 6865#else 6866 if (drv->device_ap_sme && !drv->use_monitor) 6867#endif 6868 return nl80211_send_eapol_data(bss, addr, data, data_len); 6869 6870 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 + 6871 data_len; 6872 hdr = os_zalloc(len); 6873 if (hdr == NULL) { 6874 printf("malloc() failed for i802_send_data(len=%lu)\n", 6875 (unsigned long) len); 6876 return -1; 6877 } 6878 6879 hdr->frame_control = 6880 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA); 6881 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS); 6882 if (encrypt) 6883 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP); 6884 if (qos) { 6885 hdr->frame_control |= 6886 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4); 6887 } 6888 6889 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN); 6890 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 6891 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 6892 pos = (u8 *) (hdr + 1); 6893 6894 if (qos) { 6895 /* Set highest priority in QoS header */ 6896 pos[0] = 7; 6897 pos[1] = 0; 6898 pos += 2; 6899 } 6900 6901 memcpy(pos, rfc1042_header, sizeof(rfc1042_header)); 6902 pos += sizeof(rfc1042_header); 6903 WPA_PUT_BE16(pos, ETH_P_PAE); 6904 pos += 2; 6905 memcpy(pos, data, data_len); 6906 6907 res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0, 6908 0, 0, 0, 0); 6909 if (res < 0) { 6910 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - " 6911 "failed: %d (%s)", 6912 (unsigned long) len, errno, strerror(errno)); 6913 } 6914 os_free(hdr); 6915 6916 return res; 6917} 6918 6919 6920static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr, 6921 int total_flags, 6922 int flags_or, int flags_and) 6923{ 6924 struct i802_bss *bss = priv; 6925 struct wpa_driver_nl80211_data *drv = bss->drv; 6926 struct nl_msg *msg; 6927 struct nlattr *flags; 6928 struct nl80211_sta_flag_update upd; 6929 6930 msg = nlmsg_alloc(); 6931 if (!msg) 6932 return -ENOMEM; 6933 6934 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 6935 6936 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 6937 if_nametoindex(bss->ifname)); 6938 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 6939 6940 /* 6941 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This 6942 * can be removed eventually. 6943 */ 6944 flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS); 6945 if (!flags) 6946 goto nla_put_failure; 6947 if (total_flags & WPA_STA_AUTHORIZED) 6948 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_AUTHORIZED); 6949 6950 if (total_flags & WPA_STA_WMM) 6951 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_WME); 6952 6953 if (total_flags & WPA_STA_SHORT_PREAMBLE) 6954 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_SHORT_PREAMBLE); 6955 6956 if (total_flags & WPA_STA_MFP) 6957 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_MFP); 6958 6959 if (total_flags & WPA_STA_TDLS_PEER) 6960 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_TDLS_PEER); 6961 6962 nla_nest_end(msg, flags); 6963 6964 os_memset(&upd, 0, sizeof(upd)); 6965 upd.mask = sta_flags_nl80211(flags_or | ~flags_and); 6966 upd.set = sta_flags_nl80211(flags_or); 6967 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 6968 6969 return send_and_recv_msgs(drv, msg, NULL, NULL); 6970 nla_put_failure: 6971 nlmsg_free(msg); 6972 return -ENOBUFS; 6973} 6974 6975 6976static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv, 6977 struct wpa_driver_associate_params *params) 6978{ 6979 enum nl80211_iftype nlmode, old_mode; 6980 struct hostapd_freq_params freq = { 6981 .freq = params->freq, 6982 }; 6983 6984 if (params->p2p) { 6985 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P " 6986 "group (GO)"); 6987 nlmode = NL80211_IFTYPE_P2P_GO; 6988 } else 6989 nlmode = NL80211_IFTYPE_AP; 6990 6991 old_mode = drv->nlmode; 6992 if (wpa_driver_nl80211_set_mode(&drv->first_bss, nlmode)) { 6993 nl80211_remove_monitor_interface(drv); 6994 return -1; 6995 } 6996 6997 if (wpa_driver_nl80211_set_freq(&drv->first_bss, &freq)) { 6998 if (old_mode != nlmode) 6999 wpa_driver_nl80211_set_mode(&drv->first_bss, old_mode); 7000 nl80211_remove_monitor_interface(drv); 7001 return -1; 7002 } 7003 7004 return 0; 7005} 7006 7007 7008static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv) 7009{ 7010 struct nl_msg *msg; 7011 int ret = -1; 7012 7013 msg = nlmsg_alloc(); 7014 if (!msg) 7015 return -1; 7016 7017 nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS); 7018 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7019 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7020 msg = NULL; 7021 if (ret) { 7022 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d " 7023 "(%s)", ret, strerror(-ret)); 7024 goto nla_put_failure; 7025 } 7026 7027 ret = 0; 7028 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully"); 7029 7030nla_put_failure: 7031 nlmsg_free(msg); 7032 return ret; 7033} 7034 7035 7036static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv, 7037 struct wpa_driver_associate_params *params) 7038{ 7039 struct nl_msg *msg; 7040 int ret = -1; 7041 int count = 0; 7042 7043 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex); 7044 7045 if (wpa_driver_nl80211_set_mode(&drv->first_bss, 7046 NL80211_IFTYPE_ADHOC)) { 7047 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into " 7048 "IBSS mode"); 7049 return -1; 7050 } 7051 7052retry: 7053 msg = nlmsg_alloc(); 7054 if (!msg) 7055 return -1; 7056 7057 nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS); 7058 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7059 7060 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid)) 7061 goto nla_put_failure; 7062 7063 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 7064 params->ssid, params->ssid_len); 7065 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 7066 params->ssid); 7067 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 7068 drv->ssid_len = params->ssid_len; 7069 7070 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 7071 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 7072 7073 ret = nl80211_set_conn_keys(params, msg); 7074 if (ret) 7075 goto nla_put_failure; 7076 7077 if (params->bssid && params->fixed_bssid) { 7078 wpa_printf(MSG_DEBUG, " * BSSID=" MACSTR, 7079 MAC2STR(params->bssid)); 7080 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 7081 } 7082 7083 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 7084 params->key_mgmt_suite == KEY_MGMT_PSK || 7085 params->key_mgmt_suite == KEY_MGMT_802_1X_SHA256 || 7086 params->key_mgmt_suite == KEY_MGMT_PSK_SHA256) { 7087 wpa_printf(MSG_DEBUG, " * control port"); 7088 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 7089 } 7090 7091 if (params->wpa_ie) { 7092 wpa_hexdump(MSG_DEBUG, 7093 " * Extra IEs for Beacon/Probe Response frames", 7094 params->wpa_ie, params->wpa_ie_len); 7095 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 7096 params->wpa_ie); 7097 } 7098 7099 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7100 msg = NULL; 7101 if (ret) { 7102 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)", 7103 ret, strerror(-ret)); 7104 count++; 7105 if (ret == -EALREADY && count == 1) { 7106 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after " 7107 "forced leave"); 7108 nl80211_leave_ibss(drv); 7109 nlmsg_free(msg); 7110 goto retry; 7111 } 7112 7113 goto nla_put_failure; 7114 } 7115 ret = 0; 7116 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully"); 7117 7118nla_put_failure: 7119 nlmsg_free(msg); 7120 return ret; 7121} 7122 7123 7124static int wpa_driver_nl80211_try_connect( 7125 struct wpa_driver_nl80211_data *drv, 7126 struct wpa_driver_associate_params *params) 7127{ 7128 struct nl_msg *msg; 7129 enum nl80211_auth_type type; 7130 int ret = 0; 7131 int algs; 7132 7133 msg = nlmsg_alloc(); 7134 if (!msg) 7135 return -1; 7136 7137 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex); 7138 nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT); 7139 7140 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7141 if (params->bssid) { 7142 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 7143 MAC2STR(params->bssid)); 7144 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 7145 } 7146 if (params->freq) { 7147 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 7148 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 7149 } 7150 if (params->bg_scan_period >= 0) { 7151 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 7152 params->bg_scan_period); 7153 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 7154 params->bg_scan_period); 7155 } 7156 if (params->ssid) { 7157 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 7158 params->ssid, params->ssid_len); 7159 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 7160 params->ssid); 7161 if (params->ssid_len > sizeof(drv->ssid)) 7162 goto nla_put_failure; 7163 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 7164 drv->ssid_len = params->ssid_len; 7165 } 7166 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 7167 if (params->wpa_ie) 7168 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 7169 params->wpa_ie); 7170 7171 algs = 0; 7172 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 7173 algs++; 7174 if (params->auth_alg & WPA_AUTH_ALG_SHARED) 7175 algs++; 7176 if (params->auth_alg & WPA_AUTH_ALG_LEAP) 7177 algs++; 7178 if (algs > 1) { 7179 wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic " 7180 "selection"); 7181 goto skip_auth_type; 7182 } 7183 7184 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 7185 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 7186 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 7187 type = NL80211_AUTHTYPE_SHARED_KEY; 7188 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 7189 type = NL80211_AUTHTYPE_NETWORK_EAP; 7190 else if (params->auth_alg & WPA_AUTH_ALG_FT) 7191 type = NL80211_AUTHTYPE_FT; 7192 else 7193 goto nla_put_failure; 7194 7195 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 7196 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 7197 7198skip_auth_type: 7199 if (params->wpa_proto) { 7200 enum nl80211_wpa_versions ver = 0; 7201 7202 if (params->wpa_proto & WPA_PROTO_WPA) 7203 ver |= NL80211_WPA_VERSION_1; 7204 if (params->wpa_proto & WPA_PROTO_RSN) 7205 ver |= NL80211_WPA_VERSION_2; 7206 7207 wpa_printf(MSG_DEBUG, " * WPA Versions 0x%x", ver); 7208 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 7209 } 7210 7211 if (params->pairwise_suite != CIPHER_NONE) { 7212 int cipher; 7213 7214 switch (params->pairwise_suite) { 7215 case CIPHER_SMS4: 7216 cipher = WLAN_CIPHER_SUITE_SMS4; 7217 break; 7218 case CIPHER_WEP40: 7219 cipher = WLAN_CIPHER_SUITE_WEP40; 7220 break; 7221 case CIPHER_WEP104: 7222 cipher = WLAN_CIPHER_SUITE_WEP104; 7223 break; 7224 case CIPHER_CCMP: 7225 cipher = WLAN_CIPHER_SUITE_CCMP; 7226 break; 7227 case CIPHER_GCMP: 7228 cipher = WLAN_CIPHER_SUITE_GCMP; 7229 break; 7230 case CIPHER_TKIP: 7231 default: 7232 cipher = WLAN_CIPHER_SUITE_TKIP; 7233 break; 7234 } 7235 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 7236 } 7237 7238 if (params->group_suite != CIPHER_NONE) { 7239 int cipher; 7240 7241 switch (params->group_suite) { 7242 case CIPHER_SMS4: 7243 cipher = WLAN_CIPHER_SUITE_SMS4; 7244 break; 7245 case CIPHER_WEP40: 7246 cipher = WLAN_CIPHER_SUITE_WEP40; 7247 break; 7248 case CIPHER_WEP104: 7249 cipher = WLAN_CIPHER_SUITE_WEP104; 7250 break; 7251 case CIPHER_CCMP: 7252 cipher = WLAN_CIPHER_SUITE_CCMP; 7253 break; 7254 case CIPHER_GCMP: 7255 cipher = WLAN_CIPHER_SUITE_GCMP; 7256 break; 7257 case CIPHER_TKIP: 7258 default: 7259 cipher = WLAN_CIPHER_SUITE_TKIP; 7260 break; 7261 } 7262 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 7263 } 7264 7265 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 7266 params->key_mgmt_suite == KEY_MGMT_PSK || 7267 params->key_mgmt_suite == KEY_MGMT_FT_802_1X || 7268 params->key_mgmt_suite == KEY_MGMT_FT_PSK || 7269 params->key_mgmt_suite == KEY_MGMT_CCKM) { 7270 int mgmt = WLAN_AKM_SUITE_PSK; 7271 7272 switch (params->key_mgmt_suite) { 7273 case KEY_MGMT_CCKM: 7274 mgmt = WLAN_AKM_SUITE_CCKM; 7275 break; 7276 case KEY_MGMT_802_1X: 7277 mgmt = WLAN_AKM_SUITE_8021X; 7278 break; 7279 case KEY_MGMT_FT_802_1X: 7280 mgmt = WLAN_AKM_SUITE_FT_8021X; 7281 break; 7282 case KEY_MGMT_FT_PSK: 7283 mgmt = WLAN_AKM_SUITE_FT_PSK; 7284 break; 7285 case KEY_MGMT_PSK: 7286 default: 7287 mgmt = WLAN_AKM_SUITE_PSK; 7288 break; 7289 } 7290 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt); 7291 } 7292 7293#ifdef CONFIG_IEEE80211W 7294 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED) 7295 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED); 7296#endif /* CONFIG_IEEE80211W */ 7297 7298 if (params->disable_ht) 7299 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 7300 7301 if (params->htcaps && params->htcaps_mask) { 7302 int sz = sizeof(struct ieee80211_ht_capabilities); 7303 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 7304 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 7305 params->htcaps_mask); 7306 } 7307 7308#ifdef CONFIG_VHT_OVERRIDES 7309 if (params->disable_vht) { 7310 wpa_printf(MSG_DEBUG, " * VHT disabled"); 7311 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_VHT); 7312 } 7313 7314 if (params->vhtcaps && params->vhtcaps_mask) { 7315 int sz = sizeof(struct ieee80211_vht_capabilities); 7316 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, sz, params->vhtcaps); 7317 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz, 7318 params->vhtcaps_mask); 7319 } 7320#endif /* CONFIG_VHT_OVERRIDES */ 7321 7322 ret = nl80211_set_conn_keys(params, msg); 7323 if (ret) 7324 goto nla_put_failure; 7325 7326 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7327 msg = NULL; 7328 if (ret) { 7329 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d " 7330 "(%s)", ret, strerror(-ret)); 7331 goto nla_put_failure; 7332 } 7333 ret = 0; 7334 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully"); 7335 7336nla_put_failure: 7337 nlmsg_free(msg); 7338 return ret; 7339 7340} 7341 7342 7343static int wpa_driver_nl80211_connect( 7344 struct wpa_driver_nl80211_data *drv, 7345 struct wpa_driver_associate_params *params) 7346{ 7347 int ret = wpa_driver_nl80211_try_connect(drv, params); 7348 if (ret == -EALREADY) { 7349 /* 7350 * cfg80211 does not currently accept new connections if 7351 * we are already connected. As a workaround, force 7352 * disconnection and try again. 7353 */ 7354 wpa_printf(MSG_DEBUG, "nl80211: Explicitly " 7355 "disconnecting before reassociation " 7356 "attempt"); 7357 if (wpa_driver_nl80211_disconnect( 7358 drv, WLAN_REASON_PREV_AUTH_NOT_VALID)) 7359 return -1; 7360 /* Ignore the next local disconnect message. */ 7361 drv->ignore_next_local_disconnect = 1; 7362 ret = wpa_driver_nl80211_try_connect(drv, params); 7363 } 7364 return ret; 7365} 7366 7367 7368static int wpa_driver_nl80211_associate( 7369 void *priv, struct wpa_driver_associate_params *params) 7370{ 7371 struct i802_bss *bss = priv; 7372 struct wpa_driver_nl80211_data *drv = bss->drv; 7373 int ret = -1; 7374 struct nl_msg *msg; 7375 7376 if (params->mode == IEEE80211_MODE_AP) 7377 return wpa_driver_nl80211_ap(drv, params); 7378 7379 if (params->mode == IEEE80211_MODE_IBSS) 7380 return wpa_driver_nl80211_ibss(drv, params); 7381 7382 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) { 7383 enum nl80211_iftype nlmode = params->p2p ? 7384 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 7385 7386 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0) 7387 return -1; 7388 return wpa_driver_nl80211_connect(drv, params); 7389 } 7390 7391 drv->associated = 0; 7392 7393 msg = nlmsg_alloc(); 7394 if (!msg) 7395 return -1; 7396 7397 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)", 7398 drv->ifindex); 7399 nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE); 7400 7401 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7402 if (params->bssid) { 7403 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 7404 MAC2STR(params->bssid)); 7405 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 7406 } 7407 if (params->freq) { 7408 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 7409 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 7410 drv->assoc_freq = params->freq; 7411 } else 7412 drv->assoc_freq = 0; 7413 if (params->bg_scan_period >= 0) { 7414 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 7415 params->bg_scan_period); 7416 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 7417 params->bg_scan_period); 7418 } 7419 if (params->ssid) { 7420 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 7421 params->ssid, params->ssid_len); 7422 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 7423 params->ssid); 7424 if (params->ssid_len > sizeof(drv->ssid)) 7425 goto nla_put_failure; 7426 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 7427 drv->ssid_len = params->ssid_len; 7428 } 7429 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 7430 if (params->wpa_ie) 7431 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 7432 params->wpa_ie); 7433 7434 if (params->pairwise_suite != CIPHER_NONE) { 7435 int cipher; 7436 7437 switch (params->pairwise_suite) { 7438 case CIPHER_WEP40: 7439 cipher = WLAN_CIPHER_SUITE_WEP40; 7440 break; 7441 case CIPHER_WEP104: 7442 cipher = WLAN_CIPHER_SUITE_WEP104; 7443 break; 7444 case CIPHER_CCMP: 7445 cipher = WLAN_CIPHER_SUITE_CCMP; 7446 break; 7447 case CIPHER_GCMP: 7448 cipher = WLAN_CIPHER_SUITE_GCMP; 7449 break; 7450 case CIPHER_TKIP: 7451 default: 7452 cipher = WLAN_CIPHER_SUITE_TKIP; 7453 break; 7454 } 7455 wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher); 7456 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 7457 } 7458 7459 if (params->group_suite != CIPHER_NONE) { 7460 int cipher; 7461 7462 switch (params->group_suite) { 7463 case CIPHER_WEP40: 7464 cipher = WLAN_CIPHER_SUITE_WEP40; 7465 break; 7466 case CIPHER_WEP104: 7467 cipher = WLAN_CIPHER_SUITE_WEP104; 7468 break; 7469 case CIPHER_CCMP: 7470 cipher = WLAN_CIPHER_SUITE_CCMP; 7471 break; 7472 case CIPHER_GCMP: 7473 cipher = WLAN_CIPHER_SUITE_GCMP; 7474 break; 7475 case CIPHER_TKIP: 7476 default: 7477 cipher = WLAN_CIPHER_SUITE_TKIP; 7478 break; 7479 } 7480 wpa_printf(MSG_DEBUG, " * group=0x%x", cipher); 7481 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 7482 } 7483 7484#ifdef CONFIG_IEEE80211W 7485 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED) 7486 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED); 7487#endif /* CONFIG_IEEE80211W */ 7488 7489 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 7490 7491 if (params->prev_bssid) { 7492 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR, 7493 MAC2STR(params->prev_bssid)); 7494 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN, 7495 params->prev_bssid); 7496 } 7497 7498 if (params->disable_ht) 7499 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 7500 7501 if (params->htcaps && params->htcaps_mask) { 7502 int sz = sizeof(struct ieee80211_ht_capabilities); 7503 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 7504 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 7505 params->htcaps_mask); 7506 } 7507 7508#ifdef CONFIG_VHT_OVERRIDES 7509 if (params->disable_vht) { 7510 wpa_printf(MSG_DEBUG, " * VHT disabled"); 7511 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_VHT); 7512 } 7513 7514 if (params->vhtcaps && params->vhtcaps_mask) { 7515 int sz = sizeof(struct ieee80211_vht_capabilities); 7516 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, sz, params->vhtcaps); 7517 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz, 7518 params->vhtcaps_mask); 7519 } 7520#endif /* CONFIG_VHT_OVERRIDES */ 7521 7522 if (params->p2p) 7523 wpa_printf(MSG_DEBUG, " * P2P group"); 7524 7525 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7526 msg = NULL; 7527 if (ret) { 7528 wpa_dbg(drv->ctx, MSG_DEBUG, 7529 "nl80211: MLME command failed (assoc): ret=%d (%s)", 7530 ret, strerror(-ret)); 7531 nl80211_dump_scan(drv); 7532 goto nla_put_failure; 7533 } 7534 ret = 0; 7535 wpa_printf(MSG_DEBUG, "nl80211: Association request send " 7536 "successfully"); 7537 7538nla_put_failure: 7539 nlmsg_free(msg); 7540 return ret; 7541} 7542 7543 7544static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv, 7545 int ifindex, enum nl80211_iftype mode) 7546{ 7547 struct nl_msg *msg; 7548 int ret = -ENOBUFS; 7549 7550 wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)", 7551 ifindex, mode, nl80211_iftype_str(mode)); 7552 7553 msg = nlmsg_alloc(); 7554 if (!msg) 7555 return -ENOMEM; 7556 7557 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE); 7558 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 7559 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode); 7560 7561 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7562 msg = NULL; 7563 if (!ret) 7564 return 0; 7565nla_put_failure: 7566 nlmsg_free(msg); 7567 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:" 7568 " %d (%s)", ifindex, mode, ret, strerror(-ret)); 7569 return ret; 7570} 7571 7572 7573static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, 7574 enum nl80211_iftype nlmode) 7575{ 7576 struct wpa_driver_nl80211_data *drv = bss->drv; 7577 int ret = -1; 7578 int i; 7579 int was_ap = is_ap_interface(drv->nlmode); 7580 int res; 7581 7582 res = nl80211_set_mode(drv, drv->ifindex, nlmode); 7583 if (res == 0) { 7584 drv->nlmode = nlmode; 7585 ret = 0; 7586 goto done; 7587 } 7588 7589 if (res == -ENODEV) 7590 return -1; 7591 7592 if (nlmode == drv->nlmode) { 7593 wpa_printf(MSG_DEBUG, "nl80211: Interface already in " 7594 "requested mode - ignore error"); 7595 ret = 0; 7596 goto done; /* Already in the requested mode */ 7597 } 7598 7599 /* mac80211 doesn't allow mode changes while the device is up, so 7600 * take the device down, try to set the mode again, and bring the 7601 * device back up. 7602 */ 7603 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting " 7604 "interface down"); 7605 for (i = 0; i < 10; i++) { 7606 res = linux_set_iface_flags(drv->global->ioctl_sock, 7607 bss->ifname, 0); 7608 if (res == -EACCES || res == -ENODEV) 7609 break; 7610 if (res == 0) { 7611 /* Try to set the mode again while the interface is 7612 * down */ 7613 ret = nl80211_set_mode(drv, drv->ifindex, nlmode); 7614 if (ret == -EACCES) 7615 break; 7616 res = linux_set_iface_flags(drv->global->ioctl_sock, 7617 bss->ifname, 1); 7618 if (res && !ret) 7619 ret = -1; 7620 else if (ret != -EBUSY) 7621 break; 7622 } else 7623 wpa_printf(MSG_DEBUG, "nl80211: Failed to set " 7624 "interface down"); 7625 os_sleep(0, 100000); 7626 } 7627 7628 if (!ret) { 7629 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while " 7630 "interface is down"); 7631 drv->nlmode = nlmode; 7632 drv->ignore_if_down_event = 1; 7633 } 7634 7635done: 7636 if (ret) { 7637 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d " 7638 "from %d failed", nlmode, drv->nlmode); 7639 return ret; 7640 } 7641 7642 if (is_p2p_interface(nlmode)) 7643 nl80211_disable_11b_rates(drv, drv->ifindex, 1); 7644 else if (drv->disabled_11b_rates) 7645 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 7646 7647 if (is_ap_interface(nlmode)) { 7648 nl80211_mgmt_unsubscribe(bss, "start AP"); 7649 /* Setup additional AP mode functionality if needed */ 7650 if (nl80211_setup_ap(bss)) 7651 return -1; 7652 } else if (was_ap) { 7653 /* Remove additional AP mode functionality */ 7654 nl80211_teardown_ap(bss); 7655 } else { 7656 nl80211_mgmt_unsubscribe(bss, "mode change"); 7657 } 7658 7659 if (!bss->in_deinit && !is_ap_interface(nlmode) && 7660 nl80211_mgmt_subscribe_non_ap(bss) < 0) 7661 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action " 7662 "frame processing - ignore for now"); 7663 7664 return 0; 7665} 7666 7667 7668static int wpa_driver_nl80211_get_capa(void *priv, 7669 struct wpa_driver_capa *capa) 7670{ 7671 struct i802_bss *bss = priv; 7672 struct wpa_driver_nl80211_data *drv = bss->drv; 7673 if (!drv->has_capability) 7674 return -1; 7675 os_memcpy(capa, &drv->capa, sizeof(*capa)); 7676 if (drv->extended_capa && drv->extended_capa_mask) { 7677 capa->extended_capa = drv->extended_capa; 7678 capa->extended_capa_mask = drv->extended_capa_mask; 7679 capa->extended_capa_len = drv->extended_capa_len; 7680 } 7681 return 0; 7682} 7683 7684 7685static int wpa_driver_nl80211_set_operstate(void *priv, int state) 7686{ 7687 struct i802_bss *bss = priv; 7688 struct wpa_driver_nl80211_data *drv = bss->drv; 7689 7690 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)", 7691 __func__, drv->operstate, state, state ? "UP" : "DORMANT"); 7692 drv->operstate = state; 7693 return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1, 7694 state ? IF_OPER_UP : IF_OPER_DORMANT); 7695} 7696 7697 7698static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized) 7699{ 7700 struct i802_bss *bss = priv; 7701 struct wpa_driver_nl80211_data *drv = bss->drv; 7702 struct nl_msg *msg; 7703 struct nl80211_sta_flag_update upd; 7704 7705 msg = nlmsg_alloc(); 7706 if (!msg) 7707 return -ENOMEM; 7708 7709 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 7710 7711 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7712 if_nametoindex(bss->ifname)); 7713 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 7714 7715 os_memset(&upd, 0, sizeof(upd)); 7716 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED); 7717 if (authorized) 7718 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED); 7719 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 7720 7721 return send_and_recv_msgs(drv, msg, NULL, NULL); 7722 nla_put_failure: 7723 nlmsg_free(msg); 7724 return -ENOBUFS; 7725} 7726 7727 7728/* Set kernel driver on given frequency (MHz) */ 7729static int i802_set_freq(void *priv, struct hostapd_freq_params *freq) 7730{ 7731 struct i802_bss *bss = priv; 7732 return wpa_driver_nl80211_set_freq(bss, freq); 7733} 7734 7735 7736#if defined(HOSTAPD) || defined(CONFIG_AP) 7737 7738static inline int min_int(int a, int b) 7739{ 7740 if (a < b) 7741 return a; 7742 return b; 7743} 7744 7745 7746static int get_key_handler(struct nl_msg *msg, void *arg) 7747{ 7748 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7749 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7750 7751 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7752 genlmsg_attrlen(gnlh, 0), NULL); 7753 7754 /* 7755 * TODO: validate the key index and mac address! 7756 * Otherwise, there's a race condition as soon as 7757 * the kernel starts sending key notifications. 7758 */ 7759 7760 if (tb[NL80211_ATTR_KEY_SEQ]) 7761 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]), 7762 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6)); 7763 return NL_SKIP; 7764} 7765 7766 7767static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr, 7768 int idx, u8 *seq) 7769{ 7770 struct i802_bss *bss = priv; 7771 struct wpa_driver_nl80211_data *drv = bss->drv; 7772 struct nl_msg *msg; 7773 7774 msg = nlmsg_alloc(); 7775 if (!msg) 7776 return -ENOMEM; 7777 7778 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY); 7779 7780 if (addr) 7781 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7782 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx); 7783 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface)); 7784 7785 memset(seq, 0, 6); 7786 7787 return send_and_recv_msgs(drv, msg, get_key_handler, seq); 7788 nla_put_failure: 7789 nlmsg_free(msg); 7790 return -ENOBUFS; 7791} 7792 7793 7794static int i802_set_rts(void *priv, int rts) 7795{ 7796 struct i802_bss *bss = priv; 7797 struct wpa_driver_nl80211_data *drv = bss->drv; 7798 struct nl_msg *msg; 7799 int ret = -ENOBUFS; 7800 u32 val; 7801 7802 msg = nlmsg_alloc(); 7803 if (!msg) 7804 return -ENOMEM; 7805 7806 if (rts >= 2347) 7807 val = (u32) -1; 7808 else 7809 val = rts; 7810 7811 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7812 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7813 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val); 7814 7815 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7816 msg = NULL; 7817 if (!ret) 7818 return 0; 7819nla_put_failure: 7820 nlmsg_free(msg); 7821 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: " 7822 "%d (%s)", rts, ret, strerror(-ret)); 7823 return ret; 7824} 7825 7826 7827static int i802_set_frag(void *priv, int frag) 7828{ 7829 struct i802_bss *bss = priv; 7830 struct wpa_driver_nl80211_data *drv = bss->drv; 7831 struct nl_msg *msg; 7832 int ret = -ENOBUFS; 7833 u32 val; 7834 7835 msg = nlmsg_alloc(); 7836 if (!msg) 7837 return -ENOMEM; 7838 7839 if (frag >= 2346) 7840 val = (u32) -1; 7841 else 7842 val = frag; 7843 7844 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7845 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7846 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val); 7847 7848 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7849 msg = NULL; 7850 if (!ret) 7851 return 0; 7852nla_put_failure: 7853 nlmsg_free(msg); 7854 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold " 7855 "%d: %d (%s)", frag, ret, strerror(-ret)); 7856 return ret; 7857} 7858 7859 7860static int i802_flush(void *priv) 7861{ 7862 struct i802_bss *bss = priv; 7863 struct wpa_driver_nl80211_data *drv = bss->drv; 7864 struct nl_msg *msg; 7865 int res; 7866 7867 msg = nlmsg_alloc(); 7868 if (!msg) 7869 return -1; 7870 7871 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 7872 7873 /* 7874 * XXX: FIX! this needs to flush all VLANs too 7875 */ 7876 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7877 if_nametoindex(bss->ifname)); 7878 7879 res = send_and_recv_msgs(drv, msg, NULL, NULL); 7880 if (res) { 7881 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d " 7882 "(%s)", res, strerror(-res)); 7883 } 7884 return res; 7885 nla_put_failure: 7886 nlmsg_free(msg); 7887 return -ENOBUFS; 7888} 7889 7890#endif /* HOSTAPD || CONFIG_AP */ 7891 7892 7893static int get_sta_handler(struct nl_msg *msg, void *arg) 7894{ 7895 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7896 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7897 struct hostap_sta_driver_data *data = arg; 7898 struct nlattr *stats[NL80211_STA_INFO_MAX + 1]; 7899 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = { 7900 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 }, 7901 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 }, 7902 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 }, 7903 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 }, 7904 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 }, 7905 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 }, 7906 }; 7907 7908 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7909 genlmsg_attrlen(gnlh, 0), NULL); 7910 7911 /* 7912 * TODO: validate the interface and mac address! 7913 * Otherwise, there's a race condition as soon as 7914 * the kernel starts sending station notifications. 7915 */ 7916 7917 if (!tb[NL80211_ATTR_STA_INFO]) { 7918 wpa_printf(MSG_DEBUG, "sta stats missing!"); 7919 return NL_SKIP; 7920 } 7921 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX, 7922 tb[NL80211_ATTR_STA_INFO], 7923 stats_policy)) { 7924 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!"); 7925 return NL_SKIP; 7926 } 7927 7928 if (stats[NL80211_STA_INFO_INACTIVE_TIME]) 7929 data->inactive_msec = 7930 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]); 7931 if (stats[NL80211_STA_INFO_RX_BYTES]) 7932 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]); 7933 if (stats[NL80211_STA_INFO_TX_BYTES]) 7934 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]); 7935 if (stats[NL80211_STA_INFO_RX_PACKETS]) 7936 data->rx_packets = 7937 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]); 7938 if (stats[NL80211_STA_INFO_TX_PACKETS]) 7939 data->tx_packets = 7940 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]); 7941 if (stats[NL80211_STA_INFO_TX_FAILED]) 7942 data->tx_retry_failed = 7943 nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]); 7944 7945 return NL_SKIP; 7946} 7947 7948static int i802_read_sta_data(struct i802_bss *bss, 7949 struct hostap_sta_driver_data *data, 7950 const u8 *addr) 7951{ 7952 struct wpa_driver_nl80211_data *drv = bss->drv; 7953 struct nl_msg *msg; 7954 7955 os_memset(data, 0, sizeof(*data)); 7956 msg = nlmsg_alloc(); 7957 if (!msg) 7958 return -ENOMEM; 7959 7960 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 7961 7962 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7963 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 7964 7965 return send_and_recv_msgs(drv, msg, get_sta_handler, data); 7966 nla_put_failure: 7967 nlmsg_free(msg); 7968 return -ENOBUFS; 7969} 7970 7971 7972#if defined(HOSTAPD) || defined(CONFIG_AP) 7973 7974static int i802_set_tx_queue_params(void *priv, int queue, int aifs, 7975 int cw_min, int cw_max, int burst_time) 7976{ 7977 struct i802_bss *bss = priv; 7978 struct wpa_driver_nl80211_data *drv = bss->drv; 7979 struct nl_msg *msg; 7980 struct nlattr *txq, *params; 7981 7982 msg = nlmsg_alloc(); 7983 if (!msg) 7984 return -1; 7985 7986 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7987 7988 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 7989 7990 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS); 7991 if (!txq) 7992 goto nla_put_failure; 7993 7994 /* We are only sending parameters for a single TXQ at a time */ 7995 params = nla_nest_start(msg, 1); 7996 if (!params) 7997 goto nla_put_failure; 7998 7999 switch (queue) { 8000 case 0: 8001 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO); 8002 break; 8003 case 1: 8004 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI); 8005 break; 8006 case 2: 8007 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE); 8008 break; 8009 case 3: 8010 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK); 8011 break; 8012 } 8013 /* Burst time is configured in units of 0.1 msec and TXOP parameter in 8014 * 32 usec, so need to convert the value here. */ 8015 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32); 8016 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min); 8017 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max); 8018 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs); 8019 8020 nla_nest_end(msg, params); 8021 8022 nla_nest_end(msg, txq); 8023 8024 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 8025 return 0; 8026 msg = NULL; 8027 nla_put_failure: 8028 nlmsg_free(msg); 8029 return -1; 8030} 8031 8032 8033static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr, 8034 const char *ifname, int vlan_id) 8035{ 8036 struct wpa_driver_nl80211_data *drv = bss->drv; 8037 struct nl_msg *msg; 8038 int ret = -ENOBUFS; 8039 8040 msg = nlmsg_alloc(); 8041 if (!msg) 8042 return -ENOMEM; 8043 8044 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 8045 8046 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 8047 if_nametoindex(bss->ifname)); 8048 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 8049 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN, 8050 if_nametoindex(ifname)); 8051 8052 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8053 msg = NULL; 8054 if (ret < 0) { 8055 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr=" 8056 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)", 8057 MAC2STR(addr), ifname, vlan_id, ret, 8058 strerror(-ret)); 8059 } 8060 nla_put_failure: 8061 nlmsg_free(msg); 8062 return ret; 8063} 8064 8065 8066static int i802_get_inact_sec(void *priv, const u8 *addr) 8067{ 8068 struct hostap_sta_driver_data data; 8069 int ret; 8070 8071 data.inactive_msec = (unsigned long) -1; 8072 ret = i802_read_sta_data(priv, &data, addr); 8073 if (ret || data.inactive_msec == (unsigned long) -1) 8074 return -1; 8075 return data.inactive_msec / 1000; 8076} 8077 8078 8079static int i802_sta_clear_stats(void *priv, const u8 *addr) 8080{ 8081#if 0 8082 /* TODO */ 8083#endif 8084 return 0; 8085} 8086 8087 8088static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, 8089 int reason) 8090{ 8091 struct i802_bss *bss = priv; 8092 struct wpa_driver_nl80211_data *drv = bss->drv; 8093 struct ieee80211_mgmt mgmt; 8094 8095 if (drv->device_ap_sme) 8096 return wpa_driver_nl80211_sta_remove(bss, addr); 8097 8098 memset(&mgmt, 0, sizeof(mgmt)); 8099 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 8100 WLAN_FC_STYPE_DEAUTH); 8101 memcpy(mgmt.da, addr, ETH_ALEN); 8102 memcpy(mgmt.sa, own_addr, ETH_ALEN); 8103 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 8104 mgmt.u.deauth.reason_code = host_to_le16(reason); 8105 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 8106 IEEE80211_HDRLEN + 8107 sizeof(mgmt.u.deauth), 0, 0, 0, 0, 8108 0); 8109} 8110 8111 8112static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr, 8113 int reason) 8114{ 8115 struct i802_bss *bss = priv; 8116 struct wpa_driver_nl80211_data *drv = bss->drv; 8117 struct ieee80211_mgmt mgmt; 8118 8119 if (drv->device_ap_sme) 8120 return wpa_driver_nl80211_sta_remove(bss, addr); 8121 8122 memset(&mgmt, 0, sizeof(mgmt)); 8123 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 8124 WLAN_FC_STYPE_DISASSOC); 8125 memcpy(mgmt.da, addr, ETH_ALEN); 8126 memcpy(mgmt.sa, own_addr, ETH_ALEN); 8127 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 8128 mgmt.u.disassoc.reason_code = host_to_le16(reason); 8129 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 8130 IEEE80211_HDRLEN + 8131 sizeof(mgmt.u.disassoc), 0, 0, 0, 0, 8132 0); 8133} 8134 8135#endif /* HOSTAPD || CONFIG_AP */ 8136 8137#ifdef HOSTAPD 8138 8139static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 8140{ 8141 int i; 8142 int *old; 8143 8144 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d", 8145 ifidx); 8146 for (i = 0; i < drv->num_if_indices; i++) { 8147 if (drv->if_indices[i] == 0) { 8148 drv->if_indices[i] = ifidx; 8149 return; 8150 } 8151 } 8152 8153 if (drv->if_indices != drv->default_if_indices) 8154 old = drv->if_indices; 8155 else 8156 old = NULL; 8157 8158 drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1, 8159 sizeof(int)); 8160 if (!drv->if_indices) { 8161 if (!old) 8162 drv->if_indices = drv->default_if_indices; 8163 else 8164 drv->if_indices = old; 8165 wpa_printf(MSG_ERROR, "Failed to reallocate memory for " 8166 "interfaces"); 8167 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx); 8168 return; 8169 } else if (!old) 8170 os_memcpy(drv->if_indices, drv->default_if_indices, 8171 sizeof(drv->default_if_indices)); 8172 drv->if_indices[drv->num_if_indices] = ifidx; 8173 drv->num_if_indices++; 8174} 8175 8176 8177static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 8178{ 8179 int i; 8180 8181 for (i = 0; i < drv->num_if_indices; i++) { 8182 if (drv->if_indices[i] == ifidx) { 8183 drv->if_indices[i] = 0; 8184 break; 8185 } 8186 } 8187} 8188 8189 8190static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 8191{ 8192 int i; 8193 8194 for (i = 0; i < drv->num_if_indices; i++) 8195 if (drv->if_indices[i] == ifidx) 8196 return 1; 8197 8198 return 0; 8199} 8200 8201 8202static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val, 8203 const char *bridge_ifname) 8204{ 8205 struct i802_bss *bss = priv; 8206 struct wpa_driver_nl80211_data *drv = bss->drv; 8207 char name[IFNAMSIZ + 1]; 8208 8209 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid); 8210 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR 8211 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name); 8212 if (val) { 8213 if (!if_nametoindex(name)) { 8214 if (nl80211_create_iface(drv, name, 8215 NL80211_IFTYPE_AP_VLAN, 8216 bss->addr, 1) < 0) 8217 return -1; 8218 if (bridge_ifname && 8219 linux_br_add_if(drv->global->ioctl_sock, 8220 bridge_ifname, name) < 0) 8221 return -1; 8222 } 8223 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) { 8224 wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA " 8225 "interface %s up", name); 8226 } 8227 return i802_set_sta_vlan(priv, addr, name, 0); 8228 } else { 8229 if (bridge_ifname) 8230 linux_br_del_if(drv->global->ioctl_sock, bridge_ifname, 8231 name); 8232 8233 i802_set_sta_vlan(priv, addr, bss->ifname, 0); 8234 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN, 8235 name); 8236 } 8237} 8238 8239 8240static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx) 8241{ 8242 struct wpa_driver_nl80211_data *drv = eloop_ctx; 8243 struct sockaddr_ll lladdr; 8244 unsigned char buf[3000]; 8245 int len; 8246 socklen_t fromlen = sizeof(lladdr); 8247 8248 len = recvfrom(sock, buf, sizeof(buf), 0, 8249 (struct sockaddr *)&lladdr, &fromlen); 8250 if (len < 0) { 8251 perror("recv"); 8252 return; 8253 } 8254 8255 if (have_ifidx(drv, lladdr.sll_ifindex)) 8256 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len); 8257} 8258 8259 8260static int i802_check_bridge(struct wpa_driver_nl80211_data *drv, 8261 struct i802_bss *bss, 8262 const char *brname, const char *ifname) 8263{ 8264 int ifindex; 8265 char in_br[IFNAMSIZ]; 8266 8267 os_strlcpy(bss->brname, brname, IFNAMSIZ); 8268 ifindex = if_nametoindex(brname); 8269 if (ifindex == 0) { 8270 /* 8271 * Bridge was configured, but the bridge device does 8272 * not exist. Try to add it now. 8273 */ 8274 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) { 8275 wpa_printf(MSG_ERROR, "nl80211: Failed to add the " 8276 "bridge interface %s: %s", 8277 brname, strerror(errno)); 8278 return -1; 8279 } 8280 bss->added_bridge = 1; 8281 add_ifidx(drv, if_nametoindex(brname)); 8282 } 8283 8284 if (linux_br_get(in_br, ifname) == 0) { 8285 if (os_strcmp(in_br, brname) == 0) 8286 return 0; /* already in the bridge */ 8287 8288 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from " 8289 "bridge %s", ifname, in_br); 8290 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) < 8291 0) { 8292 wpa_printf(MSG_ERROR, "nl80211: Failed to " 8293 "remove interface %s from bridge " 8294 "%s: %s", 8295 ifname, brname, strerror(errno)); 8296 return -1; 8297 } 8298 } 8299 8300 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s", 8301 ifname, brname); 8302 if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) { 8303 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s " 8304 "into bridge %s: %s", 8305 ifname, brname, strerror(errno)); 8306 return -1; 8307 } 8308 bss->added_if_into_bridge = 1; 8309 8310 return 0; 8311} 8312 8313 8314static void *i802_init(struct hostapd_data *hapd, 8315 struct wpa_init_params *params) 8316{ 8317 struct wpa_driver_nl80211_data *drv; 8318 struct i802_bss *bss; 8319 size_t i; 8320 char brname[IFNAMSIZ]; 8321 int ifindex, br_ifindex; 8322 int br_added = 0; 8323 8324 bss = wpa_driver_nl80211_init(hapd, params->ifname, 8325 params->global_priv); 8326 if (bss == NULL) 8327 return NULL; 8328 8329 drv = bss->drv; 8330 drv->nlmode = NL80211_IFTYPE_AP; 8331 drv->eapol_sock = -1; 8332 8333 if (linux_br_get(brname, params->ifname) == 0) { 8334 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s", 8335 params->ifname, brname); 8336 br_ifindex = if_nametoindex(brname); 8337 } else { 8338 brname[0] = '\0'; 8339 br_ifindex = 0; 8340 } 8341 8342 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int); 8343 drv->if_indices = drv->default_if_indices; 8344 for (i = 0; i < params->num_bridge; i++) { 8345 if (params->bridge[i]) { 8346 ifindex = if_nametoindex(params->bridge[i]); 8347 if (ifindex) 8348 add_ifidx(drv, ifindex); 8349 if (ifindex == br_ifindex) 8350 br_added = 1; 8351 } 8352 } 8353 if (!br_added && br_ifindex && 8354 (params->num_bridge == 0 || !params->bridge[0])) 8355 add_ifidx(drv, br_ifindex); 8356 8357 /* start listening for EAPOL on the default AP interface */ 8358 add_ifidx(drv, drv->ifindex); 8359 8360 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0)) 8361 goto failed; 8362 8363 if (params->bssid) { 8364 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8365 params->bssid)) 8366 goto failed; 8367 } 8368 8369 if (wpa_driver_nl80211_set_mode(bss, drv->nlmode)) { 8370 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s " 8371 "into AP mode", bss->ifname); 8372 goto failed; 8373 } 8374 8375 if (params->num_bridge && params->bridge[0] && 8376 i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0) 8377 goto failed; 8378 8379 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) 8380 goto failed; 8381 8382 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE)); 8383 if (drv->eapol_sock < 0) { 8384 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)"); 8385 goto failed; 8386 } 8387 8388 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL)) 8389 { 8390 printf("Could not register read socket for eapol\n"); 8391 goto failed; 8392 } 8393 8394 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8395 params->own_addr)) 8396 goto failed; 8397 8398 memcpy(bss->addr, params->own_addr, ETH_ALEN); 8399 8400 return bss; 8401 8402failed: 8403 wpa_driver_nl80211_deinit(bss); 8404 return NULL; 8405} 8406 8407 8408static void i802_deinit(void *priv) 8409{ 8410 struct i802_bss *bss = priv; 8411 wpa_driver_nl80211_deinit(bss); 8412} 8413 8414#endif /* HOSTAPD */ 8415 8416 8417static enum nl80211_iftype wpa_driver_nl80211_if_type( 8418 enum wpa_driver_if_type type) 8419{ 8420 switch (type) { 8421 case WPA_IF_STATION: 8422 return NL80211_IFTYPE_STATION; 8423 case WPA_IF_P2P_CLIENT: 8424 case WPA_IF_P2P_GROUP: 8425 return NL80211_IFTYPE_P2P_CLIENT; 8426 case WPA_IF_AP_VLAN: 8427 return NL80211_IFTYPE_AP_VLAN; 8428 case WPA_IF_AP_BSS: 8429 return NL80211_IFTYPE_AP; 8430 case WPA_IF_P2P_GO: 8431 return NL80211_IFTYPE_P2P_GO; 8432 } 8433 return -1; 8434} 8435 8436 8437#ifdef CONFIG_P2P 8438 8439static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr) 8440{ 8441 struct wpa_driver_nl80211_data *drv; 8442 dl_list_for_each(drv, &global->interfaces, 8443 struct wpa_driver_nl80211_data, list) { 8444 if (os_memcmp(addr, drv->first_bss.addr, ETH_ALEN) == 0) 8445 return 1; 8446 } 8447 return 0; 8448} 8449 8450 8451static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv, 8452 u8 *new_addr) 8453{ 8454 unsigned int idx; 8455 8456 if (!drv->global) 8457 return -1; 8458 8459 os_memcpy(new_addr, drv->first_bss.addr, ETH_ALEN); 8460 for (idx = 0; idx < 64; idx++) { 8461 new_addr[0] = drv->first_bss.addr[0] | 0x02; 8462 new_addr[0] ^= idx << 2; 8463 if (!nl80211_addr_in_use(drv->global, new_addr)) 8464 break; 8465 } 8466 if (idx == 64) 8467 return -1; 8468 8469 wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address " 8470 MACSTR, MAC2STR(new_addr)); 8471 8472 return 0; 8473} 8474 8475#endif /* CONFIG_P2P */ 8476 8477 8478static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type, 8479 const char *ifname, const u8 *addr, 8480 void *bss_ctx, void **drv_priv, 8481 char *force_ifname, u8 *if_addr, 8482 const char *bridge) 8483{ 8484 struct i802_bss *bss = priv; 8485 struct wpa_driver_nl80211_data *drv = bss->drv; 8486 int ifidx; 8487#ifdef HOSTAPD 8488 struct i802_bss *new_bss = NULL; 8489 8490 if (type == WPA_IF_AP_BSS) { 8491 new_bss = os_zalloc(sizeof(*new_bss)); 8492 if (new_bss == NULL) 8493 return -1; 8494 } 8495#endif /* HOSTAPD */ 8496 8497 if (addr) 8498 os_memcpy(if_addr, addr, ETH_ALEN); 8499 ifidx = nl80211_create_iface(drv, ifname, 8500 wpa_driver_nl80211_if_type(type), addr, 8501 0); 8502 if (ifidx < 0) { 8503#ifdef HOSTAPD 8504 os_free(new_bss); 8505#endif /* HOSTAPD */ 8506 return -1; 8507 } 8508 8509 if (!addr && 8510 linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8511 if_addr) < 0) { 8512 nl80211_remove_iface(drv, ifidx); 8513 return -1; 8514 } 8515 8516#ifdef CONFIG_P2P 8517 if (!addr && 8518 (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP || 8519 type == WPA_IF_P2P_GO)) { 8520 /* Enforce unique P2P Interface Address */ 8521 u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN]; 8522 8523 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8524 own_addr) < 0 || 8525 linux_get_ifhwaddr(drv->global->ioctl_sock, ifname, 8526 new_addr) < 0) { 8527 nl80211_remove_iface(drv, ifidx); 8528 return -1; 8529 } 8530 if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) { 8531 wpa_printf(MSG_DEBUG, "nl80211: Allocate new address " 8532 "for P2P group interface"); 8533 if (nl80211_p2p_interface_addr(drv, new_addr) < 0) { 8534 nl80211_remove_iface(drv, ifidx); 8535 return -1; 8536 } 8537 if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, 8538 new_addr) < 0) { 8539 nl80211_remove_iface(drv, ifidx); 8540 return -1; 8541 } 8542 } 8543 os_memcpy(if_addr, new_addr, ETH_ALEN); 8544 } 8545#endif /* CONFIG_P2P */ 8546 8547#ifdef HOSTAPD 8548 if (bridge && 8549 i802_check_bridge(drv, new_bss, bridge, ifname) < 0) { 8550 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new " 8551 "interface %s to a bridge %s", ifname, bridge); 8552 nl80211_remove_iface(drv, ifidx); 8553 os_free(new_bss); 8554 return -1; 8555 } 8556 8557 if (type == WPA_IF_AP_BSS) { 8558 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1)) 8559 { 8560 nl80211_remove_iface(drv, ifidx); 8561 os_free(new_bss); 8562 return -1; 8563 } 8564 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ); 8565 os_memcpy(new_bss->addr, if_addr, ETH_ALEN); 8566 new_bss->ifindex = ifidx; 8567 new_bss->drv = drv; 8568 new_bss->next = drv->first_bss.next; 8569 new_bss->freq = drv->first_bss.freq; 8570 new_bss->ctx = bss_ctx; 8571 drv->first_bss.next = new_bss; 8572 if (drv_priv) 8573 *drv_priv = new_bss; 8574 nl80211_init_bss(new_bss); 8575 8576 /* Subscribe management frames for this WPA_IF_AP_BSS */ 8577 if (nl80211_setup_ap(new_bss)) 8578 return -1; 8579 } 8580#endif /* HOSTAPD */ 8581 8582 if (drv->global) 8583 drv->global->if_add_ifindex = ifidx; 8584 8585 return 0; 8586} 8587 8588 8589static int wpa_driver_nl80211_if_remove(struct i802_bss *bss, 8590 enum wpa_driver_if_type type, 8591 const char *ifname) 8592{ 8593 struct wpa_driver_nl80211_data *drv = bss->drv; 8594 int ifindex = if_nametoindex(ifname); 8595 8596 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d", 8597 __func__, type, ifname, ifindex); 8598 if (ifindex <= 0) 8599 return -1; 8600 8601 nl80211_remove_iface(drv, ifindex); 8602 8603#ifdef HOSTAPD 8604 if (type != WPA_IF_AP_BSS) 8605 return 0; 8606 8607 if (bss->added_if_into_bridge) { 8608 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 8609 bss->ifname) < 0) 8610 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 8611 "interface %s from bridge %s: %s", 8612 bss->ifname, bss->brname, strerror(errno)); 8613 } 8614 if (bss->added_bridge) { 8615 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 8616 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 8617 "bridge %s: %s", 8618 bss->brname, strerror(errno)); 8619 } 8620 8621 if (bss != &drv->first_bss) { 8622 struct i802_bss *tbss; 8623 8624 for (tbss = &drv->first_bss; tbss; tbss = tbss->next) { 8625 if (tbss->next == bss) { 8626 tbss->next = bss->next; 8627 /* Unsubscribe management frames */ 8628 nl80211_teardown_ap(bss); 8629 nl80211_destroy_bss(bss); 8630 os_free(bss); 8631 bss = NULL; 8632 break; 8633 } 8634 } 8635 if (bss) 8636 wpa_printf(MSG_INFO, "nl80211: %s - could not find " 8637 "BSS %p in the list", __func__, bss); 8638 } 8639#endif /* HOSTAPD */ 8640 8641 return 0; 8642} 8643 8644 8645static int cookie_handler(struct nl_msg *msg, void *arg) 8646{ 8647 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 8648 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 8649 u64 *cookie = arg; 8650 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 8651 genlmsg_attrlen(gnlh, 0), NULL); 8652 if (tb[NL80211_ATTR_COOKIE]) 8653 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 8654 return NL_SKIP; 8655} 8656 8657 8658static int nl80211_send_frame_cmd(struct i802_bss *bss, 8659 unsigned int freq, unsigned int wait, 8660 const u8 *buf, size_t buf_len, 8661 u64 *cookie_out, int no_cck, int no_ack, 8662 int offchanok) 8663{ 8664 struct wpa_driver_nl80211_data *drv = bss->drv; 8665 struct nl_msg *msg; 8666 u64 cookie; 8667 int ret = -1; 8668 8669 msg = nlmsg_alloc(); 8670 if (!msg) 8671 return -1; 8672 8673 wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d " 8674 "no_ack=%d offchanok=%d", 8675 freq, wait, no_cck, no_ack, offchanok); 8676 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME); 8677 8678 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8679 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 8680 if (wait) 8681 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait); 8682 if (offchanok && (drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX)) 8683 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK); 8684 if (no_cck) 8685 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 8686 if (no_ack) 8687 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK); 8688 8689 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf); 8690 8691 cookie = 0; 8692 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 8693 msg = NULL; 8694 if (ret) { 8695 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d " 8696 "(%s) (freq=%u wait=%u)", ret, strerror(-ret), 8697 freq, wait); 8698 goto nla_put_failure; 8699 } 8700 wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; " 8701 "cookie 0x%llx", no_ack ? " (no ACK)" : "", 8702 (long long unsigned int) cookie); 8703 8704 if (cookie_out) 8705 *cookie_out = no_ack ? (u64) -1 : cookie; 8706 8707nla_put_failure: 8708 nlmsg_free(msg); 8709 return ret; 8710} 8711 8712 8713static int wpa_driver_nl80211_send_action(struct i802_bss *bss, 8714 unsigned int freq, 8715 unsigned int wait_time, 8716 const u8 *dst, const u8 *src, 8717 const u8 *bssid, 8718 const u8 *data, size_t data_len, 8719 int no_cck) 8720{ 8721 struct wpa_driver_nl80211_data *drv = bss->drv; 8722 int ret = -1; 8723 u8 *buf; 8724 struct ieee80211_hdr *hdr; 8725 8726 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, " 8727 "freq=%u MHz wait=%d ms no_cck=%d)", 8728 drv->ifindex, freq, wait_time, no_cck); 8729 8730 buf = os_zalloc(24 + data_len); 8731 if (buf == NULL) 8732 return ret; 8733 os_memcpy(buf + 24, data, data_len); 8734 hdr = (struct ieee80211_hdr *) buf; 8735 hdr->frame_control = 8736 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION); 8737 os_memcpy(hdr->addr1, dst, ETH_ALEN); 8738 os_memcpy(hdr->addr2, src, ETH_ALEN); 8739 os_memcpy(hdr->addr3, bssid, ETH_ALEN); 8740 8741 if (is_ap_interface(drv->nlmode)) 8742 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len, 8743 0, freq, no_cck, 1, 8744 wait_time); 8745 else 8746 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf, 8747 24 + data_len, 8748 &drv->send_action_cookie, 8749 no_cck, 0, 1); 8750 8751 os_free(buf); 8752 return ret; 8753} 8754 8755 8756static void wpa_driver_nl80211_send_action_cancel_wait(void *priv) 8757{ 8758 struct i802_bss *bss = priv; 8759 struct wpa_driver_nl80211_data *drv = bss->drv; 8760 struct nl_msg *msg; 8761 int ret; 8762 8763 msg = nlmsg_alloc(); 8764 if (!msg) 8765 return; 8766 8767 wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx", 8768 (long long unsigned int) drv->send_action_cookie); 8769 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL); 8770 8771 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8772 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie); 8773 8774 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8775 msg = NULL; 8776 if (ret) 8777 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d " 8778 "(%s)", ret, strerror(-ret)); 8779 8780 nla_put_failure: 8781 nlmsg_free(msg); 8782} 8783 8784 8785static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq, 8786 unsigned int duration) 8787{ 8788 struct i802_bss *bss = priv; 8789 struct wpa_driver_nl80211_data *drv = bss->drv; 8790 struct nl_msg *msg; 8791 int ret; 8792 u64 cookie; 8793 8794 msg = nlmsg_alloc(); 8795 if (!msg) 8796 return -1; 8797 8798 nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL); 8799 8800 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8801 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 8802 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration); 8803 8804 cookie = 0; 8805 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 8806 msg = NULL; 8807 if (ret == 0) { 8808 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie " 8809 "0x%llx for freq=%u MHz duration=%u", 8810 (long long unsigned int) cookie, freq, duration); 8811 drv->remain_on_chan_cookie = cookie; 8812 drv->pending_remain_on_chan = 1; 8813 return 0; 8814 } 8815 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel " 8816 "(freq=%d duration=%u): %d (%s)", 8817 freq, duration, ret, strerror(-ret)); 8818nla_put_failure: 8819 nlmsg_free(msg); 8820 return -1; 8821} 8822 8823 8824static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv) 8825{ 8826 struct i802_bss *bss = priv; 8827 struct wpa_driver_nl80211_data *drv = bss->drv; 8828 struct nl_msg *msg; 8829 int ret; 8830 8831 if (!drv->pending_remain_on_chan) { 8832 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel " 8833 "to cancel"); 8834 return -1; 8835 } 8836 8837 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie " 8838 "0x%llx", 8839 (long long unsigned int) drv->remain_on_chan_cookie); 8840 8841 msg = nlmsg_alloc(); 8842 if (!msg) 8843 return -1; 8844 8845 nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL); 8846 8847 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8848 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie); 8849 8850 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8851 msg = NULL; 8852 if (ret == 0) 8853 return 0; 8854 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: " 8855 "%d (%s)", ret, strerror(-ret)); 8856nla_put_failure: 8857 nlmsg_free(msg); 8858 return -1; 8859} 8860 8861 8862static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report) 8863{ 8864 struct wpa_driver_nl80211_data *drv = bss->drv; 8865 8866 if (!report) { 8867 if (bss->nl_preq && drv->device_ap_sme && 8868 is_ap_interface(drv->nlmode)) { 8869 /* 8870 * Do not disable Probe Request reporting that was 8871 * enabled in nl80211_setup_ap(). 8872 */ 8873 wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of " 8874 "Probe Request reporting nl_preq=%p while " 8875 "in AP mode", bss->nl_preq); 8876 } else if (bss->nl_preq) { 8877 wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request " 8878 "reporting nl_preq=%p", bss->nl_preq); 8879 eloop_unregister_read_sock( 8880 nl_socket_get_fd(bss->nl_preq)); 8881 nl_destroy_handles(&bss->nl_preq); 8882 } 8883 return 0; 8884 } 8885 8886 if (bss->nl_preq) { 8887 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting " 8888 "already on! nl_preq=%p", bss->nl_preq); 8889 return 0; 8890 } 8891 8892 bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq"); 8893 if (bss->nl_preq == NULL) 8894 return -1; 8895 wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request " 8896 "reporting nl_preq=%p", bss->nl_preq); 8897 8898 if (nl80211_register_frame(bss, bss->nl_preq, 8899 (WLAN_FC_TYPE_MGMT << 2) | 8900 (WLAN_FC_STYPE_PROBE_REQ << 4), 8901 NULL, 0) < 0) 8902 goto out_err; 8903 8904 eloop_register_read_sock(nl_socket_get_fd(bss->nl_preq), 8905 wpa_driver_nl80211_event_receive, bss->nl_cb, 8906 bss->nl_preq); 8907 8908 return 0; 8909 8910 out_err: 8911 nl_destroy_handles(&bss->nl_preq); 8912 return -1; 8913} 8914 8915 8916static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 8917 int ifindex, int disabled) 8918{ 8919 struct nl_msg *msg; 8920 struct nlattr *bands, *band; 8921 int ret; 8922 8923 msg = nlmsg_alloc(); 8924 if (!msg) 8925 return -1; 8926 8927 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK); 8928 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 8929 8930 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES); 8931 if (!bands) 8932 goto nla_put_failure; 8933 8934 /* 8935 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything 8936 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS 8937 * rates. All 5 GHz rates are left enabled. 8938 */ 8939 band = nla_nest_start(msg, NL80211_BAND_2GHZ); 8940 if (!band) 8941 goto nla_put_failure; 8942 if (disabled) { 8943 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8, 8944 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 8945 } 8946 nla_nest_end(msg, band); 8947 8948 nla_nest_end(msg, bands); 8949 8950 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8951 msg = NULL; 8952 if (ret) { 8953 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d " 8954 "(%s)", ret, strerror(-ret)); 8955 } else 8956 drv->disabled_11b_rates = disabled; 8957 8958 return ret; 8959 8960nla_put_failure: 8961 nlmsg_free(msg); 8962 return -1; 8963} 8964 8965 8966static int wpa_driver_nl80211_deinit_ap(void *priv) 8967{ 8968 struct i802_bss *bss = priv; 8969 struct wpa_driver_nl80211_data *drv = bss->drv; 8970 if (!is_ap_interface(drv->nlmode)) 8971 return -1; 8972 wpa_driver_nl80211_del_beacon(drv); 8973 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 8974} 8975 8976 8977static int wpa_driver_nl80211_deinit_p2p_cli(void *priv) 8978{ 8979 struct i802_bss *bss = priv; 8980 struct wpa_driver_nl80211_data *drv = bss->drv; 8981 if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT) 8982 return -1; 8983 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 8984} 8985 8986 8987static void wpa_driver_nl80211_resume(void *priv) 8988{ 8989 struct i802_bss *bss = priv; 8990 struct wpa_driver_nl80211_data *drv = bss->drv; 8991 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { 8992 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on " 8993 "resume event"); 8994 } 8995} 8996 8997 8998static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap, 8999 const u8 *ies, size_t ies_len) 9000{ 9001 struct i802_bss *bss = priv; 9002 struct wpa_driver_nl80211_data *drv = bss->drv; 9003 int ret; 9004 u8 *data, *pos; 9005 size_t data_len; 9006 const u8 *own_addr = bss->addr; 9007 9008 if (action != 1) { 9009 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action " 9010 "action %d", action); 9011 return -1; 9012 } 9013 9014 /* 9015 * Action frame payload: 9016 * Category[1] = 6 (Fast BSS Transition) 9017 * Action[1] = 1 (Fast BSS Transition Request) 9018 * STA Address 9019 * Target AP Address 9020 * FT IEs 9021 */ 9022 9023 data_len = 2 + 2 * ETH_ALEN + ies_len; 9024 data = os_malloc(data_len); 9025 if (data == NULL) 9026 return -1; 9027 pos = data; 9028 *pos++ = 0x06; /* FT Action category */ 9029 *pos++ = action; 9030 os_memcpy(pos, own_addr, ETH_ALEN); 9031 pos += ETH_ALEN; 9032 os_memcpy(pos, target_ap, ETH_ALEN); 9033 pos += ETH_ALEN; 9034 os_memcpy(pos, ies, ies_len); 9035 9036 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0, 9037 drv->bssid, own_addr, drv->bssid, 9038 data, data_len, 0); 9039 os_free(data); 9040 9041 return ret; 9042} 9043 9044 9045static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis) 9046{ 9047 struct i802_bss *bss = priv; 9048 struct wpa_driver_nl80211_data *drv = bss->drv; 9049 struct nl_msg *msg; 9050 struct nlattr *cqm; 9051 int ret = -1; 9052 9053 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d " 9054 "hysteresis=%d", threshold, hysteresis); 9055 9056 msg = nlmsg_alloc(); 9057 if (!msg) 9058 return -1; 9059 9060 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM); 9061 9062 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9063 9064 cqm = nla_nest_start(msg, NL80211_ATTR_CQM); 9065 if (cqm == NULL) 9066 goto nla_put_failure; 9067 9068 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold); 9069 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis); 9070 nla_nest_end(msg, cqm); 9071 9072 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 9073 msg = NULL; 9074 9075nla_put_failure: 9076 nlmsg_free(msg); 9077 return ret; 9078} 9079 9080 9081static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si) 9082{ 9083 struct i802_bss *bss = priv; 9084 struct wpa_driver_nl80211_data *drv = bss->drv; 9085 int res; 9086 9087 os_memset(si, 0, sizeof(*si)); 9088 res = nl80211_get_link_signal(drv, si); 9089 if (res != 0) 9090 return res; 9091 9092 return nl80211_get_link_noise(drv, si); 9093} 9094 9095 9096static int wpa_driver_nl80211_shared_freq(void *priv) 9097{ 9098 struct i802_bss *bss = priv; 9099 struct wpa_driver_nl80211_data *drv = bss->drv; 9100 struct wpa_driver_nl80211_data *driver; 9101 int freq = 0; 9102 9103 /* 9104 * If the same PHY is in connected state with some other interface, 9105 * then retrieve the assoc freq. 9106 */ 9107 wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s", 9108 drv->phyname); 9109 9110 dl_list_for_each(driver, &drv->global->interfaces, 9111 struct wpa_driver_nl80211_data, list) { 9112 if (drv == driver || 9113 os_strcmp(drv->phyname, driver->phyname) != 0 || 9114#ifdef ANDROID_P2P 9115 (!driver->associated && !is_ap_interface(driver->nlmode))) 9116#else 9117 !driver->associated) 9118#endif 9119 continue; 9120 9121 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s " 9122 MACSTR, 9123 driver->phyname, driver->first_bss.ifname, 9124 MAC2STR(driver->first_bss.addr)); 9125 if (is_ap_interface(driver->nlmode)) 9126 freq = driver->first_bss.freq; 9127 else 9128 freq = nl80211_get_assoc_freq(driver); 9129 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d", 9130 drv->phyname, freq); 9131 } 9132 9133 if (!freq) 9134 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for " 9135 "PHY (%s) in associated state", drv->phyname); 9136 9137 return freq; 9138} 9139 9140 9141static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len, 9142 int encrypt) 9143{ 9144 struct i802_bss *bss = priv; 9145 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0, 9146 0, 0, 0, 0); 9147} 9148 9149 9150static int nl80211_set_param(void *priv, const char *param) 9151{ 9152 wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param); 9153 if (param == NULL) 9154 return 0; 9155 9156#ifdef CONFIG_P2P 9157 if (os_strstr(param, "use_p2p_group_interface=1")) { 9158 struct i802_bss *bss = priv; 9159 struct wpa_driver_nl80211_data *drv = bss->drv; 9160 9161 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 9162 "interface"); 9163 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 9164 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 9165 } 9166#ifdef ANDROID_P2P 9167 if(os_strstr(param, "use_multi_chan_concurrent=1")) { 9168 struct i802_bss *bss = priv; 9169 struct wpa_driver_nl80211_data *drv = bss->drv; 9170 wpa_printf(MSG_DEBUG, "nl80211: Use Multi channel " 9171 "concurrency"); 9172 drv->capa.flags |= WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT; 9173 } 9174#endif 9175#endif /* CONFIG_P2P */ 9176 9177 return 0; 9178} 9179 9180 9181static void * nl80211_global_init(void) 9182{ 9183 struct nl80211_global *global; 9184 struct netlink_config *cfg; 9185 9186 global = os_zalloc(sizeof(*global)); 9187 if (global == NULL) 9188 return NULL; 9189 global->ioctl_sock = -1; 9190 dl_list_init(&global->interfaces); 9191 global->if_add_ifindex = -1; 9192 9193 cfg = os_zalloc(sizeof(*cfg)); 9194 if (cfg == NULL) 9195 goto err; 9196 9197 cfg->ctx = global; 9198 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink; 9199 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink; 9200 global->netlink = netlink_init(cfg); 9201 if (global->netlink == NULL) { 9202 os_free(cfg); 9203 goto err; 9204 } 9205 9206 if (wpa_driver_nl80211_init_nl_global(global) < 0) 9207 goto err; 9208 9209 global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0); 9210 if (global->ioctl_sock < 0) { 9211 perror("socket(PF_INET,SOCK_DGRAM)"); 9212 goto err; 9213 } 9214 9215 return global; 9216 9217err: 9218 nl80211_global_deinit(global); 9219 return NULL; 9220} 9221 9222 9223static void nl80211_global_deinit(void *priv) 9224{ 9225 struct nl80211_global *global = priv; 9226 if (global == NULL) 9227 return; 9228 if (!dl_list_empty(&global->interfaces)) { 9229 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at " 9230 "nl80211_global_deinit", 9231 dl_list_len(&global->interfaces)); 9232 } 9233 9234 if (global->netlink) 9235 netlink_deinit(global->netlink); 9236 9237 nl_destroy_handles(&global->nl); 9238 9239 if (global->nl_event) { 9240 eloop_unregister_read_sock( 9241 nl_socket_get_fd(global->nl_event)); 9242 nl_destroy_handles(&global->nl_event); 9243 } 9244 9245 nl_cb_put(global->nl_cb); 9246 9247 if (global->ioctl_sock >= 0) 9248 close(global->ioctl_sock); 9249 9250 os_free(global); 9251} 9252 9253 9254static const char * nl80211_get_radio_name(void *priv) 9255{ 9256 struct i802_bss *bss = priv; 9257 struct wpa_driver_nl80211_data *drv = bss->drv; 9258 return drv->phyname; 9259} 9260 9261 9262static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid, 9263 const u8 *pmkid) 9264{ 9265 struct nl_msg *msg; 9266 9267 msg = nlmsg_alloc(); 9268 if (!msg) 9269 return -ENOMEM; 9270 9271 nl80211_cmd(bss->drv, msg, 0, cmd); 9272 9273 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 9274 if (pmkid) 9275 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid); 9276 if (bssid) 9277 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); 9278 9279 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 9280 nla_put_failure: 9281 nlmsg_free(msg); 9282 return -ENOBUFS; 9283} 9284 9285 9286static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 9287{ 9288 struct i802_bss *bss = priv; 9289 wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid)); 9290 return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid); 9291} 9292 9293 9294static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 9295{ 9296 struct i802_bss *bss = priv; 9297 wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR, 9298 MAC2STR(bssid)); 9299 return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid); 9300} 9301 9302 9303static int nl80211_flush_pmkid(void *priv) 9304{ 9305 struct i802_bss *bss = priv; 9306 wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs"); 9307 return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL); 9308} 9309 9310 9311static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck, 9312 const u8 *replay_ctr) 9313{ 9314 struct i802_bss *bss = priv; 9315 struct wpa_driver_nl80211_data *drv = bss->drv; 9316 struct nlattr *replay_nested; 9317 struct nl_msg *msg; 9318 9319 msg = nlmsg_alloc(); 9320 if (!msg) 9321 return; 9322 9323 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 9324 9325 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9326 9327 replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 9328 if (!replay_nested) 9329 goto nla_put_failure; 9330 9331 NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek); 9332 NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck); 9333 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN, 9334 replay_ctr); 9335 9336 nla_nest_end(msg, replay_nested); 9337 9338 send_and_recv_msgs(drv, msg, NULL, NULL); 9339 return; 9340 nla_put_failure: 9341 nlmsg_free(msg); 9342} 9343 9344 9345static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr, 9346 const u8 *addr, int qos) 9347{ 9348 /* send data frame to poll STA and check whether 9349 * this frame is ACKed */ 9350 struct { 9351 struct ieee80211_hdr hdr; 9352 u16 qos_ctl; 9353 } STRUCT_PACKED nulldata; 9354 size_t size; 9355 9356 /* Send data frame to poll STA and check whether this frame is ACKed */ 9357 9358 os_memset(&nulldata, 0, sizeof(nulldata)); 9359 9360 if (qos) { 9361 nulldata.hdr.frame_control = 9362 IEEE80211_FC(WLAN_FC_TYPE_DATA, 9363 WLAN_FC_STYPE_QOS_NULL); 9364 size = sizeof(nulldata); 9365 } else { 9366 nulldata.hdr.frame_control = 9367 IEEE80211_FC(WLAN_FC_TYPE_DATA, 9368 WLAN_FC_STYPE_NULLFUNC); 9369 size = sizeof(struct ieee80211_hdr); 9370 } 9371 9372 nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS); 9373 os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN); 9374 os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 9375 os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 9376 9377 if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0, 9378 0, 0) < 0) 9379 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to " 9380 "send poll frame"); 9381} 9382 9383static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr, 9384 int qos) 9385{ 9386 struct i802_bss *bss = priv; 9387 struct wpa_driver_nl80211_data *drv = bss->drv; 9388 struct nl_msg *msg; 9389 9390 if (!drv->poll_command_supported) { 9391 nl80211_send_null_frame(bss, own_addr, addr, qos); 9392 return; 9393 } 9394 9395 msg = nlmsg_alloc(); 9396 if (!msg) 9397 return; 9398 9399 nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT); 9400 9401 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9402 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 9403 9404 send_and_recv_msgs(drv, msg, NULL, NULL); 9405 return; 9406 nla_put_failure: 9407 nlmsg_free(msg); 9408} 9409 9410 9411static int nl80211_set_power_save(struct i802_bss *bss, int enabled) 9412{ 9413 struct nl_msg *msg; 9414 9415 msg = nlmsg_alloc(); 9416 if (!msg) 9417 return -ENOMEM; 9418 9419 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE); 9420 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9421 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, 9422 enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED); 9423 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 9424nla_put_failure: 9425 nlmsg_free(msg); 9426 return -ENOBUFS; 9427} 9428 9429 9430static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps, 9431 int ctwindow) 9432{ 9433 struct i802_bss *bss = priv; 9434 9435 wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d " 9436 "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow); 9437 9438 if (opp_ps != -1 || ctwindow != -1) 9439#ifdef ANDROID_P2P 9440 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow); 9441#else 9442 return -1; /* Not yet supported */ 9443#endif 9444 9445 if (legacy_ps == -1) 9446 return 0; 9447 if (legacy_ps != 0 && legacy_ps != 1) 9448 return -1; /* Not yet supported */ 9449 9450 return nl80211_set_power_save(bss, legacy_ps); 9451} 9452 9453 9454#ifdef CONFIG_TDLS 9455 9456static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code, 9457 u8 dialog_token, u16 status_code, 9458 const u8 *buf, size_t len) 9459{ 9460 struct i802_bss *bss = priv; 9461 struct wpa_driver_nl80211_data *drv = bss->drv; 9462 struct nl_msg *msg; 9463 9464 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 9465 return -EOPNOTSUPP; 9466 9467 if (!dst) 9468 return -EINVAL; 9469 9470 msg = nlmsg_alloc(); 9471 if (!msg) 9472 return -ENOMEM; 9473 9474 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT); 9475 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 9476 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst); 9477 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code); 9478 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token); 9479 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code); 9480 NLA_PUT(msg, NL80211_ATTR_IE, len, buf); 9481 9482 return send_and_recv_msgs(drv, msg, NULL, NULL); 9483 9484nla_put_failure: 9485 nlmsg_free(msg); 9486 return -ENOBUFS; 9487} 9488 9489 9490static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer) 9491{ 9492 struct i802_bss *bss = priv; 9493 struct wpa_driver_nl80211_data *drv = bss->drv; 9494 struct nl_msg *msg; 9495 enum nl80211_tdls_operation nl80211_oper; 9496 9497 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 9498 return -EOPNOTSUPP; 9499 9500 switch (oper) { 9501 case TDLS_DISCOVERY_REQ: 9502 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ; 9503 break; 9504 case TDLS_SETUP: 9505 nl80211_oper = NL80211_TDLS_SETUP; 9506 break; 9507 case TDLS_TEARDOWN: 9508 nl80211_oper = NL80211_TDLS_TEARDOWN; 9509 break; 9510 case TDLS_ENABLE_LINK: 9511 nl80211_oper = NL80211_TDLS_ENABLE_LINK; 9512 break; 9513 case TDLS_DISABLE_LINK: 9514 nl80211_oper = NL80211_TDLS_DISABLE_LINK; 9515 break; 9516 case TDLS_ENABLE: 9517 return 0; 9518 case TDLS_DISABLE: 9519 return 0; 9520 default: 9521 return -EINVAL; 9522 } 9523 9524 msg = nlmsg_alloc(); 9525 if (!msg) 9526 return -ENOMEM; 9527 9528 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER); 9529 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper); 9530 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 9531 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer); 9532 9533 return send_and_recv_msgs(drv, msg, NULL, NULL); 9534 9535nla_put_failure: 9536 nlmsg_free(msg); 9537 return -ENOBUFS; 9538} 9539 9540#endif /* CONFIG TDLS */ 9541 9542 9543#ifdef ANDROID 9544 9545typedef struct android_wifi_priv_cmd { 9546 char *buf; 9547 int used_len; 9548 int total_len; 9549} android_wifi_priv_cmd; 9550 9551static int drv_errors = 0; 9552 9553static void wpa_driver_send_hang_msg(struct wpa_driver_nl80211_data *drv) 9554{ 9555 drv_errors++; 9556 if (drv_errors > DRV_NUMBER_SEQUENTIAL_ERRORS) { 9557 drv_errors = 0; 9558 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED"); 9559 } 9560} 9561 9562 9563static int android_priv_cmd(struct i802_bss *bss, const char *cmd) 9564{ 9565 struct wpa_driver_nl80211_data *drv = bss->drv; 9566 struct ifreq ifr; 9567 android_wifi_priv_cmd priv_cmd; 9568 char buf[MAX_DRV_CMD_SIZE]; 9569 int ret; 9570 9571 os_memset(&ifr, 0, sizeof(ifr)); 9572 os_memset(&priv_cmd, 0, sizeof(priv_cmd)); 9573 os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 9574 9575 os_memset(buf, 0, sizeof(buf)); 9576 os_strlcpy(buf, cmd, sizeof(buf)); 9577 9578 priv_cmd.buf = buf; 9579 priv_cmd.used_len = sizeof(buf); 9580 priv_cmd.total_len = sizeof(buf); 9581 ifr.ifr_data = &priv_cmd; 9582 9583 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 9584 if (ret < 0) { 9585 wpa_printf(MSG_ERROR, "%s: failed to issue private commands", 9586 __func__); 9587 wpa_driver_send_hang_msg(drv); 9588 return ret; 9589 } 9590 9591 drv_errors = 0; 9592 return 0; 9593} 9594 9595 9596static int android_pno_start(struct i802_bss *bss, 9597 struct wpa_driver_scan_params *params) 9598{ 9599 struct wpa_driver_nl80211_data *drv = bss->drv; 9600 struct ifreq ifr; 9601 android_wifi_priv_cmd priv_cmd; 9602 int ret = 0, i = 0, bp; 9603 char buf[WEXT_PNO_MAX_COMMAND_SIZE]; 9604 9605 bp = WEXT_PNOSETUP_HEADER_SIZE; 9606 os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp); 9607 buf[bp++] = WEXT_PNO_TLV_PREFIX; 9608 buf[bp++] = WEXT_PNO_TLV_VERSION; 9609 buf[bp++] = WEXT_PNO_TLV_SUBVERSION; 9610 buf[bp++] = WEXT_PNO_TLV_RESERVED; 9611 9612 while (i < WEXT_PNO_AMOUNT && (size_t) i < params->num_ssids) { 9613 /* Check that there is enough space needed for 1 more SSID, the 9614 * other sections and null termination */ 9615 if ((bp + WEXT_PNO_SSID_HEADER_SIZE + MAX_SSID_LEN + 9616 WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int) sizeof(buf)) 9617 break; 9618 wpa_hexdump_ascii(MSG_DEBUG, "For PNO Scan", 9619 params->ssids[i].ssid, 9620 params->ssids[i].ssid_len); 9621 buf[bp++] = WEXT_PNO_SSID_SECTION; 9622 buf[bp++] = params->ssids[i].ssid_len; 9623 os_memcpy(&buf[bp], params->ssids[i].ssid, 9624 params->ssids[i].ssid_len); 9625 bp += params->ssids[i].ssid_len; 9626 i++; 9627 } 9628 9629 buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION; 9630 os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x", 9631 WEXT_PNO_SCAN_INTERVAL); 9632 bp += WEXT_PNO_SCAN_INTERVAL_LENGTH; 9633 9634 buf[bp++] = WEXT_PNO_REPEAT_SECTION; 9635 os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x", 9636 WEXT_PNO_REPEAT); 9637 bp += WEXT_PNO_REPEAT_LENGTH; 9638 9639 buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION; 9640 os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x", 9641 WEXT_PNO_MAX_REPEAT); 9642 bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1; 9643 9644 memset(&ifr, 0, sizeof(ifr)); 9645 memset(&priv_cmd, 0, sizeof(priv_cmd)); 9646 os_strncpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 9647 9648 priv_cmd.buf = buf; 9649 priv_cmd.used_len = bp; 9650 priv_cmd.total_len = bp; 9651 ifr.ifr_data = &priv_cmd; 9652 9653 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 9654 9655 if (ret < 0) { 9656 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d", 9657 ret); 9658 wpa_driver_send_hang_msg(drv); 9659 return ret; 9660 } 9661 9662 drv_errors = 0; 9663 9664 return android_priv_cmd(bss, "PNOFORCE 1"); 9665} 9666 9667 9668static int android_pno_stop(struct i802_bss *bss) 9669{ 9670 return android_priv_cmd(bss, "PNOFORCE 0"); 9671} 9672 9673#endif /* ANDROID */ 9674 9675 9676static int driver_nl80211_set_key(const char *ifname, void *priv, 9677 enum wpa_alg alg, const u8 *addr, 9678 int key_idx, int set_tx, 9679 const u8 *seq, size_t seq_len, 9680 const u8 *key, size_t key_len) 9681{ 9682 struct i802_bss *bss = priv; 9683 return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx, 9684 set_tx, seq, seq_len, key, key_len); 9685} 9686 9687 9688static int driver_nl80211_scan2(void *priv, 9689 struct wpa_driver_scan_params *params) 9690{ 9691 struct i802_bss *bss = priv; 9692 return wpa_driver_nl80211_scan(bss, params); 9693} 9694 9695 9696static int driver_nl80211_deauthenticate(void *priv, const u8 *addr, 9697 int reason_code) 9698{ 9699 struct i802_bss *bss = priv; 9700 return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code); 9701} 9702 9703 9704static int driver_nl80211_authenticate(void *priv, 9705 struct wpa_driver_auth_params *params) 9706{ 9707 struct i802_bss *bss = priv; 9708 return wpa_driver_nl80211_authenticate(bss, params); 9709} 9710 9711 9712static void driver_nl80211_deinit(void *priv) 9713{ 9714 struct i802_bss *bss = priv; 9715 wpa_driver_nl80211_deinit(bss); 9716} 9717 9718 9719static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type, 9720 const char *ifname) 9721{ 9722 struct i802_bss *bss = priv; 9723 return wpa_driver_nl80211_if_remove(bss, type, ifname); 9724} 9725 9726 9727static int driver_nl80211_send_mlme(void *priv, const u8 *data, 9728 size_t data_len, int noack) 9729{ 9730 struct i802_bss *bss = priv; 9731 return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack, 9732 0, 0, 0, 0); 9733} 9734 9735 9736static int driver_nl80211_sta_remove(void *priv, const u8 *addr) 9737{ 9738 struct i802_bss *bss = priv; 9739 return wpa_driver_nl80211_sta_remove(bss, addr); 9740} 9741 9742 9743#if defined(HOSTAPD) || defined(CONFIG_AP) 9744static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr, 9745 const char *ifname, int vlan_id) 9746{ 9747 struct i802_bss *bss = priv; 9748 return i802_set_sta_vlan(bss, addr, ifname, vlan_id); 9749} 9750#endif /* HOSTAPD || CONFIG_AP */ 9751 9752 9753static int driver_nl80211_read_sta_data(void *priv, 9754 struct hostap_sta_driver_data *data, 9755 const u8 *addr) 9756{ 9757 struct i802_bss *bss = priv; 9758 return i802_read_sta_data(bss, data, addr); 9759} 9760 9761 9762static int driver_nl80211_send_action(void *priv, unsigned int freq, 9763 unsigned int wait_time, 9764 const u8 *dst, const u8 *src, 9765 const u8 *bssid, 9766 const u8 *data, size_t data_len, 9767 int no_cck) 9768{ 9769 struct i802_bss *bss = priv; 9770 return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src, 9771 bssid, data, data_len, no_cck); 9772} 9773 9774 9775static int driver_nl80211_probe_req_report(void *priv, int report) 9776{ 9777 struct i802_bss *bss = priv; 9778 return wpa_driver_nl80211_probe_req_report(bss, report); 9779} 9780 9781 9782static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md, 9783 const u8 *ies, size_t ies_len) 9784{ 9785 int ret; 9786 struct nl_msg *msg; 9787 struct i802_bss *bss = priv; 9788 struct wpa_driver_nl80211_data *drv = bss->drv; 9789 u16 mdid = WPA_GET_LE16(md); 9790 9791 msg = nlmsg_alloc(); 9792 if (!msg) 9793 return -ENOMEM; 9794 9795 wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs"); 9796 nl80211_cmd(drv, msg, 0, NL80211_CMD_UPDATE_FT_IES); 9797 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 9798 NLA_PUT(msg, NL80211_ATTR_IE, ies_len, ies); 9799 NLA_PUT_U16(msg, NL80211_ATTR_MDID, mdid); 9800 9801 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 9802 if (ret) { 9803 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed " 9804 "err=%d (%s)", ret, strerror(-ret)); 9805 } 9806 9807 return ret; 9808 9809nla_put_failure: 9810 nlmsg_free(msg); 9811 return -ENOBUFS; 9812} 9813 9814 9815const struct wpa_driver_ops wpa_driver_nl80211_ops = { 9816 .name = "nl80211", 9817 .desc = "Linux nl80211/cfg80211", 9818 .get_bssid = wpa_driver_nl80211_get_bssid, 9819 .get_ssid = wpa_driver_nl80211_get_ssid, 9820 .set_key = driver_nl80211_set_key, 9821 .scan2 = driver_nl80211_scan2, 9822 .sched_scan = wpa_driver_nl80211_sched_scan, 9823 .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan, 9824 .get_scan_results2 = wpa_driver_nl80211_get_scan_results, 9825 .deauthenticate = driver_nl80211_deauthenticate, 9826 .authenticate = driver_nl80211_authenticate, 9827 .associate = wpa_driver_nl80211_associate, 9828 .global_init = nl80211_global_init, 9829 .global_deinit = nl80211_global_deinit, 9830 .init2 = wpa_driver_nl80211_init, 9831 .deinit = driver_nl80211_deinit, 9832 .get_capa = wpa_driver_nl80211_get_capa, 9833 .set_operstate = wpa_driver_nl80211_set_operstate, 9834 .set_supp_port = wpa_driver_nl80211_set_supp_port, 9835 .set_country = wpa_driver_nl80211_set_country, 9836 .set_ap = wpa_driver_nl80211_set_ap, 9837 .if_add = wpa_driver_nl80211_if_add, 9838 .if_remove = driver_nl80211_if_remove, 9839 .send_mlme = driver_nl80211_send_mlme, 9840 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data, 9841 .sta_add = wpa_driver_nl80211_sta_add, 9842 .sta_remove = driver_nl80211_sta_remove, 9843 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol, 9844 .sta_set_flags = wpa_driver_nl80211_sta_set_flags, 9845#ifdef HOSTAPD 9846 .hapd_init = i802_init, 9847 .hapd_deinit = i802_deinit, 9848 .set_wds_sta = i802_set_wds_sta, 9849#endif /* HOSTAPD */ 9850#if defined(HOSTAPD) || defined(CONFIG_AP) 9851 .get_seqnum = i802_get_seqnum, 9852 .flush = i802_flush, 9853 .get_inact_sec = i802_get_inact_sec, 9854 .sta_clear_stats = i802_sta_clear_stats, 9855 .set_rts = i802_set_rts, 9856 .set_frag = i802_set_frag, 9857 .set_tx_queue_params = i802_set_tx_queue_params, 9858 .set_sta_vlan = driver_nl80211_set_sta_vlan, 9859 .sta_deauth = i802_sta_deauth, 9860 .sta_disassoc = i802_sta_disassoc, 9861#endif /* HOSTAPD || CONFIG_AP */ 9862 .read_sta_data = driver_nl80211_read_sta_data, 9863 .set_freq = i802_set_freq, 9864 .send_action = driver_nl80211_send_action, 9865 .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait, 9866 .remain_on_channel = wpa_driver_nl80211_remain_on_channel, 9867 .cancel_remain_on_channel = 9868 wpa_driver_nl80211_cancel_remain_on_channel, 9869 .probe_req_report = driver_nl80211_probe_req_report, 9870 .deinit_ap = wpa_driver_nl80211_deinit_ap, 9871 .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli, 9872 .resume = wpa_driver_nl80211_resume, 9873 .send_ft_action = nl80211_send_ft_action, 9874 .signal_monitor = nl80211_signal_monitor, 9875 .signal_poll = nl80211_signal_poll, 9876 .send_frame = nl80211_send_frame, 9877 .shared_freq = wpa_driver_nl80211_shared_freq, 9878 .set_param = nl80211_set_param, 9879 .get_radio_name = nl80211_get_radio_name, 9880 .add_pmkid = nl80211_add_pmkid, 9881 .remove_pmkid = nl80211_remove_pmkid, 9882 .flush_pmkid = nl80211_flush_pmkid, 9883 .set_rekey_info = nl80211_set_rekey_info, 9884 .poll_client = nl80211_poll_client, 9885 .set_p2p_powersave = nl80211_set_p2p_powersave, 9886#ifdef CONFIG_TDLS 9887 .send_tdls_mgmt = nl80211_send_tdls_mgmt, 9888 .tdls_oper = nl80211_tdls_oper, 9889#endif /* CONFIG_TDLS */ 9890 .update_ft_ies = wpa_driver_nl80211_update_ft_ies, 9891#ifdef ANDROID_P2P 9892 .set_noa = wpa_driver_set_p2p_noa, 9893 .get_noa = wpa_driver_get_p2p_noa, 9894 .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie, 9895#endif 9896#ifdef ANDROID 9897 .driver_cmd = wpa_driver_nl80211_driver_cmd, 9898#endif 9899}; 9900