driver_nl80211.c revision 4b06059785b935dd1f4f09314e4e12c417d2c6a4
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 u8 channel; 5125 chan->freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]); 5126 chan->flag = 0; 5127 if (ieee80211_freq_to_chan(chan->freq, &channel) != NUM_HOSTAPD_MODES) 5128 chan->chan = channel; 5129 5130 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 5131 chan->flag |= HOSTAPD_CHAN_DISABLED; 5132 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN]) 5133 chan->flag |= HOSTAPD_CHAN_PASSIVE_SCAN; 5134 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS]) 5135 chan->flag |= HOSTAPD_CHAN_NO_IBSS; 5136 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR]) 5137 chan->flag |= HOSTAPD_CHAN_RADAR; 5138 5139 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] && 5140 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 5141 chan->max_tx_power = nla_get_u32( 5142 tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100; 5143} 5144 5145 5146static int phy_info_freqs(struct phy_info_arg *phy_info, 5147 struct hostapd_hw_modes *mode, struct nlattr *tb) 5148{ 5149 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 5150 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, 5151 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, 5152 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG }, 5153 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG }, 5154 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, 5155 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 }, 5156 }; 5157 int new_channels = 0; 5158 struct hostapd_channel_data *channel; 5159 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1]; 5160 struct nlattr *nl_freq; 5161 int rem_freq, idx; 5162 5163 if (tb == NULL) 5164 return NL_OK; 5165 5166 nla_for_each_nested(nl_freq, tb, rem_freq) { 5167 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, 5168 nla_data(nl_freq), nla_len(nl_freq), freq_policy); 5169 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 5170 continue; 5171 new_channels++; 5172 } 5173 5174 channel = os_realloc_array(mode->channels, 5175 mode->num_channels + new_channels, 5176 sizeof(struct hostapd_channel_data)); 5177 if (!channel) 5178 return NL_SKIP; 5179 5180 mode->channels = channel; 5181 mode->num_channels += new_channels; 5182 5183 idx = phy_info->last_chan_idx; 5184 5185 nla_for_each_nested(nl_freq, tb, rem_freq) { 5186 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, 5187 nla_data(nl_freq), nla_len(nl_freq), freq_policy); 5188 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 5189 continue; 5190 phy_info_freq(mode, &mode->channels[idx], tb_freq); 5191 idx++; 5192 } 5193 phy_info->last_chan_idx = idx; 5194 5195 return NL_OK; 5196} 5197 5198 5199static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb) 5200{ 5201 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = { 5202 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 }, 5203 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = 5204 { .type = NLA_FLAG }, 5205 }; 5206 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1]; 5207 struct nlattr *nl_rate; 5208 int rem_rate, idx; 5209 5210 if (tb == NULL) 5211 return NL_OK; 5212 5213 nla_for_each_nested(nl_rate, tb, rem_rate) { 5214 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, 5215 nla_data(nl_rate), nla_len(nl_rate), 5216 rate_policy); 5217 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 5218 continue; 5219 mode->num_rates++; 5220 } 5221 5222 mode->rates = os_calloc(mode->num_rates, sizeof(int)); 5223 if (!mode->rates) 5224 return NL_SKIP; 5225 5226 idx = 0; 5227 5228 nla_for_each_nested(nl_rate, tb, rem_rate) { 5229 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, 5230 nla_data(nl_rate), nla_len(nl_rate), 5231 rate_policy); 5232 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 5233 continue; 5234 mode->rates[idx] = nla_get_u32( 5235 tb_rate[NL80211_BITRATE_ATTR_RATE]); 5236 idx++; 5237 } 5238 5239 return NL_OK; 5240} 5241 5242 5243static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band) 5244{ 5245 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1]; 5246 struct hostapd_hw_modes *mode; 5247 int ret; 5248 5249 if (phy_info->last_mode != nl_band->nla_type) { 5250 mode = os_realloc_array(phy_info->modes, 5251 *phy_info->num_modes + 1, 5252 sizeof(*mode)); 5253 if (!mode) 5254 return NL_SKIP; 5255 phy_info->modes = mode; 5256 5257 mode = &phy_info->modes[*(phy_info->num_modes)]; 5258 os_memset(mode, 0, sizeof(*mode)); 5259 mode->mode = NUM_HOSTAPD_MODES; 5260 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN; 5261 *(phy_info->num_modes) += 1; 5262 phy_info->last_mode = nl_band->nla_type; 5263 phy_info->last_chan_idx = 0; 5264 } else 5265 mode = &phy_info->modes[*(phy_info->num_modes) - 1]; 5266 5267 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band), 5268 nla_len(nl_band), NULL); 5269 5270 phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA], 5271 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR], 5272 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY], 5273 tb_band[NL80211_BAND_ATTR_HT_MCS_SET]); 5274 phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA], 5275 tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]); 5276 ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]); 5277 if (ret != NL_OK) 5278 return ret; 5279 ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]); 5280 if (ret != NL_OK) 5281 return ret; 5282 5283 return NL_OK; 5284} 5285 5286 5287static int phy_info_handler(struct nl_msg *msg, void *arg) 5288{ 5289 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 5290 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 5291 struct phy_info_arg *phy_info = arg; 5292 struct nlattr *nl_band; 5293 int rem_band; 5294 5295 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5296 genlmsg_attrlen(gnlh, 0), NULL); 5297 5298 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS]) 5299 return NL_SKIP; 5300 5301 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) 5302 { 5303 int res = phy_info_band(phy_info, nl_band); 5304 if (res != NL_OK) 5305 return res; 5306 } 5307 5308 return NL_SKIP; 5309} 5310 5311 5312static struct hostapd_hw_modes * 5313wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes *modes, 5314 u16 *num_modes) 5315{ 5316 u16 m; 5317 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode; 5318 int i, mode11g_idx = -1; 5319 5320 /* heuristic to set up modes */ 5321 for (m = 0; m < *num_modes; m++) { 5322 if (!modes[m].num_channels) 5323 continue; 5324 if (modes[m].channels[0].freq < 4000) { 5325 modes[m].mode = HOSTAPD_MODE_IEEE80211B; 5326 for (i = 0; i < modes[m].num_rates; i++) { 5327 if (modes[m].rates[i] > 200) { 5328 modes[m].mode = HOSTAPD_MODE_IEEE80211G; 5329 break; 5330 } 5331 } 5332 } else if (modes[m].channels[0].freq > 50000) 5333 modes[m].mode = HOSTAPD_MODE_IEEE80211AD; 5334 else 5335 modes[m].mode = HOSTAPD_MODE_IEEE80211A; 5336 } 5337 5338 /* If only 802.11g mode is included, use it to construct matching 5339 * 802.11b mode data. */ 5340 5341 for (m = 0; m < *num_modes; m++) { 5342 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B) 5343 return modes; /* 802.11b already included */ 5344 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G) 5345 mode11g_idx = m; 5346 } 5347 5348 if (mode11g_idx < 0) 5349 return modes; /* 2.4 GHz band not supported at all */ 5350 5351 nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes)); 5352 if (nmodes == NULL) 5353 return modes; /* Could not add 802.11b mode */ 5354 5355 mode = &nmodes[*num_modes]; 5356 os_memset(mode, 0, sizeof(*mode)); 5357 (*num_modes)++; 5358 modes = nmodes; 5359 5360 mode->mode = HOSTAPD_MODE_IEEE80211B; 5361 5362 mode11g = &modes[mode11g_idx]; 5363 mode->num_channels = mode11g->num_channels; 5364 mode->channels = os_malloc(mode11g->num_channels * 5365 sizeof(struct hostapd_channel_data)); 5366 if (mode->channels == NULL) { 5367 (*num_modes)--; 5368 return modes; /* Could not add 802.11b mode */ 5369 } 5370 os_memcpy(mode->channels, mode11g->channels, 5371 mode11g->num_channels * sizeof(struct hostapd_channel_data)); 5372 5373 mode->num_rates = 0; 5374 mode->rates = os_malloc(4 * sizeof(int)); 5375 if (mode->rates == NULL) { 5376 os_free(mode->channels); 5377 (*num_modes)--; 5378 return modes; /* Could not add 802.11b mode */ 5379 } 5380 5381 for (i = 0; i < mode11g->num_rates; i++) { 5382 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 && 5383 mode11g->rates[i] != 55 && mode11g->rates[i] != 110) 5384 continue; 5385 mode->rates[mode->num_rates] = mode11g->rates[i]; 5386 mode->num_rates++; 5387 if (mode->num_rates == 4) 5388 break; 5389 } 5390 5391 if (mode->num_rates == 0) { 5392 os_free(mode->channels); 5393 os_free(mode->rates); 5394 (*num_modes)--; 5395 return modes; /* No 802.11b rates */ 5396 } 5397 5398 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g " 5399 "information"); 5400 5401 return modes; 5402} 5403 5404 5405static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start, 5406 int end) 5407{ 5408 int c; 5409 5410 for (c = 0; c < mode->num_channels; c++) { 5411 struct hostapd_channel_data *chan = &mode->channels[c]; 5412 if (chan->freq - 10 >= start && chan->freq + 10 <= end) 5413 chan->flag |= HOSTAPD_CHAN_HT40; 5414 } 5415} 5416 5417 5418static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start, 5419 int end) 5420{ 5421 int c; 5422 5423 for (c = 0; c < mode->num_channels; c++) { 5424 struct hostapd_channel_data *chan = &mode->channels[c]; 5425 if (!(chan->flag & HOSTAPD_CHAN_HT40)) 5426 continue; 5427 if (chan->freq - 30 >= start && chan->freq - 10 <= end) 5428 chan->flag |= HOSTAPD_CHAN_HT40MINUS; 5429 if (chan->freq + 10 >= start && chan->freq + 30 <= end) 5430 chan->flag |= HOSTAPD_CHAN_HT40PLUS; 5431 } 5432} 5433 5434 5435static void nl80211_reg_rule_ht40(struct nlattr *tb[], 5436 struct phy_info_arg *results) 5437{ 5438 u32 start, end, max_bw; 5439 u16 m; 5440 5441 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 5442 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 5443 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 5444 return; 5445 5446 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 5447 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 5448 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 5449 5450 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz", 5451 start, end, max_bw); 5452 if (max_bw < 40) 5453 return; 5454 5455 for (m = 0; m < *results->num_modes; m++) { 5456 if (!(results->modes[m].ht_capab & 5457 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 5458 continue; 5459 nl80211_set_ht40_mode(&results->modes[m], start, end); 5460 } 5461} 5462 5463 5464static void nl80211_reg_rule_sec(struct nlattr *tb[], 5465 struct phy_info_arg *results) 5466{ 5467 u32 start, end, max_bw; 5468 u16 m; 5469 5470 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 5471 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 5472 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 5473 return; 5474 5475 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 5476 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 5477 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 5478 5479 if (max_bw < 20) 5480 return; 5481 5482 for (m = 0; m < *results->num_modes; m++) { 5483 if (!(results->modes[m].ht_capab & 5484 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 5485 continue; 5486 nl80211_set_ht40_mode_sec(&results->modes[m], start, end); 5487 } 5488} 5489 5490 5491static int nl80211_get_reg(struct nl_msg *msg, void *arg) 5492{ 5493 struct phy_info_arg *results = arg; 5494 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 5495 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 5496 struct nlattr *nl_rule; 5497 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1]; 5498 int rem_rule; 5499 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 5500 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 5501 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 5502 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 5503 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 5504 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 5505 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 5506 }; 5507 5508 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5509 genlmsg_attrlen(gnlh, 0), NULL); 5510 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] || 5511 !tb_msg[NL80211_ATTR_REG_RULES]) { 5512 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information " 5513 "available"); 5514 return NL_SKIP; 5515 } 5516 5517 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s", 5518 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2])); 5519 5520 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 5521 { 5522 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 5523 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 5524 nl80211_reg_rule_ht40(tb_rule, results); 5525 } 5526 5527 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 5528 { 5529 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 5530 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 5531 nl80211_reg_rule_sec(tb_rule, results); 5532 } 5533 5534 return NL_SKIP; 5535} 5536 5537 5538static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv, 5539 struct phy_info_arg *results) 5540{ 5541 struct nl_msg *msg; 5542 5543 msg = nlmsg_alloc(); 5544 if (!msg) 5545 return -ENOMEM; 5546 5547 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG); 5548 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results); 5549} 5550 5551 5552static struct hostapd_hw_modes * 5553wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags) 5554{ 5555 u32 feat; 5556 struct i802_bss *bss = priv; 5557 struct wpa_driver_nl80211_data *drv = bss->drv; 5558 struct nl_msg *msg; 5559 struct phy_info_arg result = { 5560 .num_modes = num_modes, 5561 .modes = NULL, 5562 .last_mode = -1, 5563 }; 5564 5565 *num_modes = 0; 5566 *flags = 0; 5567 5568 msg = nlmsg_alloc(); 5569 if (!msg) 5570 return NULL; 5571 5572 feat = get_nl80211_protocol_features(drv); 5573 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) 5574 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_WIPHY); 5575 else 5576 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 5577 5578 NLA_PUT_FLAG(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP); 5579 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5580 5581 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) { 5582 nl80211_set_ht40_flags(drv, &result); 5583 return wpa_driver_nl80211_postprocess_modes(result.modes, 5584 num_modes); 5585 } 5586 msg = NULL; 5587 nla_put_failure: 5588 nlmsg_free(msg); 5589 return NULL; 5590} 5591 5592 5593static int wpa_driver_nl80211_send_mntr(struct wpa_driver_nl80211_data *drv, 5594 const void *data, size_t len, 5595 int encrypt, int noack) 5596{ 5597 __u8 rtap_hdr[] = { 5598 0x00, 0x00, /* radiotap version */ 5599 0x0e, 0x00, /* radiotap length */ 5600 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */ 5601 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */ 5602 0x00, /* padding */ 5603 0x00, 0x00, /* RX and TX flags to indicate that */ 5604 0x00, 0x00, /* this is the injected frame directly */ 5605 }; 5606 struct iovec iov[2] = { 5607 { 5608 .iov_base = &rtap_hdr, 5609 .iov_len = sizeof(rtap_hdr), 5610 }, 5611 { 5612 .iov_base = (void *) data, 5613 .iov_len = len, 5614 } 5615 }; 5616 struct msghdr msg = { 5617 .msg_name = NULL, 5618 .msg_namelen = 0, 5619 .msg_iov = iov, 5620 .msg_iovlen = 2, 5621 .msg_control = NULL, 5622 .msg_controllen = 0, 5623 .msg_flags = 0, 5624 }; 5625 int res; 5626 u16 txflags = 0; 5627 5628 if (encrypt) 5629 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP; 5630 5631 if (drv->monitor_sock < 0) { 5632 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available " 5633 "for %s", __func__); 5634 return -1; 5635 } 5636 5637 if (noack) 5638 txflags |= IEEE80211_RADIOTAP_F_TX_NOACK; 5639 WPA_PUT_LE16(&rtap_hdr[12], txflags); 5640 5641 res = sendmsg(drv->monitor_sock, &msg, 0); 5642 if (res < 0) { 5643 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno)); 5644 return -1; 5645 } 5646 return 0; 5647} 5648 5649 5650static int wpa_driver_nl80211_send_frame(struct i802_bss *bss, 5651 const void *data, size_t len, 5652 int encrypt, int noack, 5653 unsigned int freq, int no_cck, 5654 int offchanok, unsigned int wait_time) 5655{ 5656 struct wpa_driver_nl80211_data *drv = bss->drv; 5657 u64 cookie; 5658 5659 if (freq == 0) 5660 freq = bss->freq; 5661 5662 if (drv->use_monitor) 5663 return wpa_driver_nl80211_send_mntr(drv, data, len, 5664 encrypt, noack); 5665 5666 return nl80211_send_frame_cmd(bss, freq, wait_time, data, len, 5667 &cookie, no_cck, noack, offchanok); 5668} 5669 5670 5671static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data, 5672 size_t data_len, int noack, 5673 unsigned int freq, int no_cck, 5674 int offchanok, 5675 unsigned int wait_time) 5676{ 5677 struct wpa_driver_nl80211_data *drv = bss->drv; 5678 struct ieee80211_mgmt *mgmt; 5679 int encrypt = 1; 5680 u16 fc; 5681 5682 mgmt = (struct ieee80211_mgmt *) data; 5683 fc = le_to_host16(mgmt->frame_control); 5684 5685 if (is_sta_interface(drv->nlmode) && 5686 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 5687 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) { 5688 /* 5689 * The use of last_mgmt_freq is a bit of a hack, 5690 * but it works due to the single-threaded nature 5691 * of wpa_supplicant. 5692 */ 5693 if (freq == 0) 5694 freq = drv->last_mgmt_freq; 5695 return nl80211_send_frame_cmd(bss, freq, 0, 5696 data, data_len, NULL, 1, noack, 5697 1); 5698 } 5699 5700 if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) { 5701 if (freq == 0) 5702 freq = bss->freq; 5703 return nl80211_send_frame_cmd(bss, freq, 5704 (int) freq == bss->freq ? 0 : 5705 wait_time, 5706 data, data_len, 5707 &drv->send_action_cookie, 5708 no_cck, noack, offchanok); 5709 } 5710 5711 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 5712 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) { 5713 /* 5714 * Only one of the authentication frame types is encrypted. 5715 * In order for static WEP encryption to work properly (i.e., 5716 * to not encrypt the frame), we need to tell mac80211 about 5717 * the frames that must not be encrypted. 5718 */ 5719 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg); 5720 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction); 5721 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3) 5722 encrypt = 0; 5723 } 5724 5725 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 5726 noack, freq, no_cck, offchanok, 5727 wait_time); 5728} 5729 5730 5731static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble, 5732 int slot, int ht_opmode, int ap_isolate, 5733 int *basic_rates) 5734{ 5735 struct wpa_driver_nl80211_data *drv = bss->drv; 5736 struct nl_msg *msg; 5737 5738 msg = nlmsg_alloc(); 5739 if (!msg) 5740 return -ENOMEM; 5741 5742 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS); 5743 5744 if (cts >= 0) 5745 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts); 5746 if (preamble >= 0) 5747 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble); 5748 if (slot >= 0) 5749 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot); 5750 if (ht_opmode >= 0) 5751 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode); 5752 if (ap_isolate >= 0) 5753 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate); 5754 5755 if (basic_rates) { 5756 u8 rates[NL80211_MAX_SUPP_RATES]; 5757 u8 rates_len = 0; 5758 int i; 5759 5760 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; 5761 i++) 5762 rates[rates_len++] = basic_rates[i] / 5; 5763 5764 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates); 5765 } 5766 5767 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 5768 5769 return send_and_recv_msgs(drv, msg, NULL, NULL); 5770 nla_put_failure: 5771 nlmsg_free(msg); 5772 return -ENOBUFS; 5773} 5774 5775 5776static int wpa_driver_nl80211_set_ap(void *priv, 5777 struct wpa_driver_ap_params *params) 5778{ 5779 struct i802_bss *bss = priv; 5780 struct wpa_driver_nl80211_data *drv = bss->drv; 5781 struct nl_msg *msg; 5782 u8 cmd = NL80211_CMD_NEW_BEACON; 5783 int ret; 5784 int beacon_set; 5785 int ifindex = if_nametoindex(bss->ifname); 5786 int num_suites; 5787 u32 suites[10]; 5788 u32 ver; 5789 5790 beacon_set = bss->beacon_set; 5791 5792 msg = nlmsg_alloc(); 5793 if (!msg) 5794 return -ENOMEM; 5795 5796 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)", 5797 beacon_set); 5798 if (beacon_set) 5799 cmd = NL80211_CMD_SET_BEACON; 5800 5801 nl80211_cmd(drv, msg, 0, cmd); 5802 wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head", 5803 params->head, params->head_len); 5804 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head); 5805 wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail", 5806 params->tail, params->tail_len); 5807 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail); 5808 wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", ifindex); 5809 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 5810 wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int); 5811 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int); 5812 wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period); 5813 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period); 5814 wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid", 5815 params->ssid, params->ssid_len); 5816 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 5817 params->ssid); 5818 if (params->proberesp && params->proberesp_len) { 5819 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)", 5820 params->proberesp, params->proberesp_len); 5821 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len, 5822 params->proberesp); 5823 } 5824 switch (params->hide_ssid) { 5825 case NO_SSID_HIDING: 5826 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use"); 5827 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5828 NL80211_HIDDEN_SSID_NOT_IN_USE); 5829 break; 5830 case HIDDEN_SSID_ZERO_LEN: 5831 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len"); 5832 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5833 NL80211_HIDDEN_SSID_ZERO_LEN); 5834 break; 5835 case HIDDEN_SSID_ZERO_CONTENTS: 5836 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents"); 5837 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5838 NL80211_HIDDEN_SSID_ZERO_CONTENTS); 5839 break; 5840 } 5841 wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy); 5842 if (params->privacy) 5843 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 5844 wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs); 5845 if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) == 5846 (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) { 5847 /* Leave out the attribute */ 5848 } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) 5849 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 5850 NL80211_AUTHTYPE_SHARED_KEY); 5851 else 5852 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 5853 NL80211_AUTHTYPE_OPEN_SYSTEM); 5854 5855 wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version); 5856 ver = 0; 5857 if (params->wpa_version & WPA_PROTO_WPA) 5858 ver |= NL80211_WPA_VERSION_1; 5859 if (params->wpa_version & WPA_PROTO_RSN) 5860 ver |= NL80211_WPA_VERSION_2; 5861 if (ver) 5862 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 5863 5864 wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x", 5865 params->key_mgmt_suites); 5866 num_suites = 0; 5867 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X) 5868 suites[num_suites++] = WLAN_AKM_SUITE_8021X; 5869 if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK) 5870 suites[num_suites++] = WLAN_AKM_SUITE_PSK; 5871 if (num_suites) { 5872 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES, 5873 num_suites * sizeof(u32), suites); 5874 } 5875 5876 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X && 5877 params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40)) 5878 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT); 5879 5880 wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x", 5881 params->pairwise_ciphers); 5882 num_suites = 0; 5883 if (params->pairwise_ciphers & WPA_CIPHER_CCMP) 5884 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP; 5885 if (params->pairwise_ciphers & WPA_CIPHER_GCMP) 5886 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP; 5887 if (params->pairwise_ciphers & WPA_CIPHER_TKIP) 5888 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP; 5889 if (params->pairwise_ciphers & WPA_CIPHER_WEP104) 5890 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104; 5891 if (params->pairwise_ciphers & WPA_CIPHER_WEP40) 5892 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40; 5893 if (num_suites) { 5894 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, 5895 num_suites * sizeof(u32), suites); 5896 } 5897 5898 wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x", 5899 params->group_cipher); 5900 switch (params->group_cipher) { 5901 case WPA_CIPHER_CCMP: 5902 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5903 WLAN_CIPHER_SUITE_CCMP); 5904 break; 5905 case WPA_CIPHER_GCMP: 5906 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5907 WLAN_CIPHER_SUITE_GCMP); 5908 break; 5909 case WPA_CIPHER_TKIP: 5910 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5911 WLAN_CIPHER_SUITE_TKIP); 5912 break; 5913 case WPA_CIPHER_WEP104: 5914 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5915 WLAN_CIPHER_SUITE_WEP104); 5916 break; 5917 case WPA_CIPHER_WEP40: 5918 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5919 WLAN_CIPHER_SUITE_WEP40); 5920 break; 5921 } 5922 5923 if (params->beacon_ies) { 5924 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies", 5925 params->beacon_ies); 5926 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies), 5927 wpabuf_head(params->beacon_ies)); 5928 } 5929 if (params->proberesp_ies) { 5930 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies", 5931 params->proberesp_ies); 5932 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP, 5933 wpabuf_len(params->proberesp_ies), 5934 wpabuf_head(params->proberesp_ies)); 5935 } 5936 if (params->assocresp_ies) { 5937 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies", 5938 params->assocresp_ies); 5939 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP, 5940 wpabuf_len(params->assocresp_ies), 5941 wpabuf_head(params->assocresp_ies)); 5942 } 5943 5944 if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER) { 5945 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d", 5946 params->ap_max_inactivity); 5947 NLA_PUT_U16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT, 5948 params->ap_max_inactivity); 5949 } 5950 5951 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5952 if (ret) { 5953 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)", 5954 ret, strerror(-ret)); 5955 } else { 5956 bss->beacon_set = 1; 5957 nl80211_set_bss(bss, params->cts_protect, params->preamble, 5958 params->short_slot_time, params->ht_opmode, 5959 params->isolate, params->basic_rates); 5960 } 5961 return ret; 5962 nla_put_failure: 5963 nlmsg_free(msg); 5964 return -ENOBUFS; 5965} 5966 5967 5968static int wpa_driver_nl80211_set_freq(struct i802_bss *bss, 5969 struct hostapd_freq_params *freq) 5970{ 5971 struct wpa_driver_nl80211_data *drv = bss->drv; 5972 struct nl_msg *msg; 5973 int ret; 5974 5975 wpa_printf(MSG_DEBUG, "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d," 5976 " bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)", 5977 freq->freq, freq->ht_enabled, freq->vht_enabled, 5978 freq->bandwidth, freq->center_freq1, freq->center_freq2); 5979 msg = nlmsg_alloc(); 5980 if (!msg) 5981 return -1; 5982 5983 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 5984 5985 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5986 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq); 5987 if (freq->vht_enabled) { 5988 switch (freq->bandwidth) { 5989 case 20: 5990 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 5991 NL80211_CHAN_WIDTH_20); 5992 break; 5993 case 40: 5994 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 5995 NL80211_CHAN_WIDTH_40); 5996 break; 5997 case 80: 5998 if (freq->center_freq2) 5999 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 6000 NL80211_CHAN_WIDTH_80P80); 6001 else 6002 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 6003 NL80211_CHAN_WIDTH_80); 6004 break; 6005 case 160: 6006 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 6007 NL80211_CHAN_WIDTH_160); 6008 break; 6009 default: 6010 return -1; 6011 } 6012 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1, freq->center_freq1); 6013 if (freq->center_freq2) 6014 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ2, 6015 freq->center_freq2); 6016 } else if (freq->ht_enabled) { 6017 switch (freq->sec_channel_offset) { 6018 case -1: 6019 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 6020 NL80211_CHAN_HT40MINUS); 6021 break; 6022 case 1: 6023 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 6024 NL80211_CHAN_HT40PLUS); 6025 break; 6026 default: 6027 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 6028 NL80211_CHAN_HT20); 6029 break; 6030 } 6031 } 6032 6033 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6034 msg = NULL; 6035 if (ret == 0) { 6036 bss->freq = freq->freq; 6037 return 0; 6038 } 6039 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): " 6040 "%d (%s)", freq->freq, ret, strerror(-ret)); 6041nla_put_failure: 6042 nlmsg_free(msg); 6043 return -1; 6044} 6045 6046 6047static u32 sta_flags_nl80211(int flags) 6048{ 6049 u32 f = 0; 6050 6051 if (flags & WPA_STA_AUTHORIZED) 6052 f |= BIT(NL80211_STA_FLAG_AUTHORIZED); 6053 if (flags & WPA_STA_WMM) 6054 f |= BIT(NL80211_STA_FLAG_WME); 6055 if (flags & WPA_STA_SHORT_PREAMBLE) 6056 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 6057 if (flags & WPA_STA_MFP) 6058 f |= BIT(NL80211_STA_FLAG_MFP); 6059 if (flags & WPA_STA_TDLS_PEER) 6060 f |= BIT(NL80211_STA_FLAG_TDLS_PEER); 6061 6062 return f; 6063} 6064 6065 6066static int wpa_driver_nl80211_sta_add(void *priv, 6067 struct hostapd_sta_add_params *params) 6068{ 6069 struct i802_bss *bss = priv; 6070 struct wpa_driver_nl80211_data *drv = bss->drv; 6071 struct nl_msg *msg; 6072 struct nl80211_sta_flag_update upd; 6073 int ret = -ENOBUFS; 6074 6075 if ((params->flags & WPA_STA_TDLS_PEER) && 6076 !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 6077 return -EOPNOTSUPP; 6078 6079 msg = nlmsg_alloc(); 6080 if (!msg) 6081 return -ENOMEM; 6082 6083 wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR, 6084 params->set ? "Set" : "Add", MAC2STR(params->addr)); 6085 nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION : 6086 NL80211_CMD_NEW_STATION); 6087 6088 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 6089 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr); 6090 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len, 6091 params->supp_rates); 6092 wpa_hexdump(MSG_DEBUG, " * supported rates", params->supp_rates, 6093 params->supp_rates_len); 6094 if (!params->set) { 6095 wpa_printf(MSG_DEBUG, " * aid=%u", params->aid); 6096 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid); 6097 wpa_printf(MSG_DEBUG, " * listen_interval=%u", 6098 params->listen_interval); 6099 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL, 6100 params->listen_interval); 6101 } 6102 if (params->ht_capabilities) { 6103 wpa_hexdump(MSG_DEBUG, " * ht_capabilities", 6104 (u8 *) params->ht_capabilities, 6105 sizeof(*params->ht_capabilities)); 6106 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, 6107 sizeof(*params->ht_capabilities), 6108 params->ht_capabilities); 6109 } 6110 6111 if (params->vht_capabilities) { 6112 wpa_hexdump(MSG_DEBUG, " * vht_capabilities", 6113 (u8 *) params->vht_capabilities, 6114 sizeof(*params->vht_capabilities)); 6115 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, 6116 sizeof(*params->vht_capabilities), 6117 params->vht_capabilities); 6118 } 6119 6120 wpa_printf(MSG_DEBUG, " * capability=0x%x", params->capability); 6121 NLA_PUT_U16(msg, NL80211_ATTR_STA_CAPABILITY, params->capability); 6122 6123 if (params->ext_capab) { 6124 wpa_hexdump(MSG_DEBUG, " * ext_capab", 6125 params->ext_capab, params->ext_capab_len); 6126 NLA_PUT(msg, NL80211_ATTR_STA_EXT_CAPABILITY, 6127 params->ext_capab_len, params->ext_capab); 6128 } 6129 6130 os_memset(&upd, 0, sizeof(upd)); 6131 upd.mask = sta_flags_nl80211(params->flags); 6132 upd.set = upd.mask; 6133 wpa_printf(MSG_DEBUG, " * flags set=0x%x mask=0x%x", 6134 upd.set, upd.mask); 6135 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 6136 6137 if (params->flags & WPA_STA_WMM) { 6138 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME); 6139 6140 if (!wme) 6141 goto nla_put_failure; 6142 6143 wpa_printf(MSG_DEBUG, " * qosinfo=0x%x", params->qosinfo); 6144 NLA_PUT_U8(msg, NL80211_STA_WME_UAPSD_QUEUES, 6145 params->qosinfo & WMM_QOSINFO_STA_AC_MASK); 6146 NLA_PUT_U8(msg, NL80211_STA_WME_MAX_SP, 6147 (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) & 6148 WMM_QOSINFO_STA_SP_MASK); 6149 nla_nest_end(msg, wme); 6150 } 6151 6152 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6153 msg = NULL; 6154 if (ret) 6155 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION " 6156 "result: %d (%s)", params->set ? "SET" : "NEW", ret, 6157 strerror(-ret)); 6158 if (ret == -EEXIST) 6159 ret = 0; 6160 nla_put_failure: 6161 nlmsg_free(msg); 6162 return ret; 6163} 6164 6165 6166static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr) 6167{ 6168 struct wpa_driver_nl80211_data *drv = bss->drv; 6169 struct nl_msg *msg; 6170 int ret; 6171 6172 msg = nlmsg_alloc(); 6173 if (!msg) 6174 return -ENOMEM; 6175 6176 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 6177 6178 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 6179 if_nametoindex(bss->ifname)); 6180 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 6181 6182 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6183 if (ret == -ENOENT) 6184 return 0; 6185 return ret; 6186 nla_put_failure: 6187 nlmsg_free(msg); 6188 return -ENOBUFS; 6189} 6190 6191 6192static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, 6193 int ifidx) 6194{ 6195 struct nl_msg *msg; 6196 6197 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx); 6198 6199 /* stop listening for EAPOL on this interface */ 6200 del_ifidx(drv, ifidx); 6201 6202 msg = nlmsg_alloc(); 6203 if (!msg) 6204 goto nla_put_failure; 6205 6206 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE); 6207 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx); 6208 6209 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 6210 return; 6211 msg = NULL; 6212 nla_put_failure: 6213 nlmsg_free(msg); 6214 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx); 6215} 6216 6217 6218static const char * nl80211_iftype_str(enum nl80211_iftype mode) 6219{ 6220 switch (mode) { 6221 case NL80211_IFTYPE_ADHOC: 6222 return "ADHOC"; 6223 case NL80211_IFTYPE_STATION: 6224 return "STATION"; 6225 case NL80211_IFTYPE_AP: 6226 return "AP"; 6227 case NL80211_IFTYPE_MONITOR: 6228 return "MONITOR"; 6229 case NL80211_IFTYPE_P2P_CLIENT: 6230 return "P2P_CLIENT"; 6231 case NL80211_IFTYPE_P2P_GO: 6232 return "P2P_GO"; 6233 default: 6234 return "unknown"; 6235 } 6236} 6237 6238 6239static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv, 6240 const char *ifname, 6241 enum nl80211_iftype iftype, 6242 const u8 *addr, int wds) 6243{ 6244 struct nl_msg *msg; 6245 int ifidx; 6246 int ret = -ENOBUFS; 6247 6248 wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)", 6249 iftype, nl80211_iftype_str(iftype)); 6250 6251 msg = nlmsg_alloc(); 6252 if (!msg) 6253 return -1; 6254 6255 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE); 6256 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6257 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname); 6258 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype); 6259 6260 if (iftype == NL80211_IFTYPE_MONITOR) { 6261 struct nlattr *flags; 6262 6263 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS); 6264 if (!flags) 6265 goto nla_put_failure; 6266 6267 NLA_PUT_FLAG(msg, NL80211_MNTR_FLAG_COOK_FRAMES); 6268 6269 nla_nest_end(msg, flags); 6270 } else if (wds) { 6271 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds); 6272 } 6273 6274 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6275 msg = NULL; 6276 if (ret) { 6277 nla_put_failure: 6278 nlmsg_free(msg); 6279 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)", 6280 ifname, ret, strerror(-ret)); 6281 return ret; 6282 } 6283 6284 ifidx = if_nametoindex(ifname); 6285 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d", 6286 ifname, ifidx); 6287 6288 if (ifidx <= 0) 6289 return -1; 6290 6291 /* start listening for EAPOL on this interface */ 6292 add_ifidx(drv, ifidx); 6293 6294 if (addr && iftype != NL80211_IFTYPE_MONITOR && 6295 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) { 6296 nl80211_remove_iface(drv, ifidx); 6297 return -1; 6298 } 6299 6300 return ifidx; 6301} 6302 6303 6304static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv, 6305 const char *ifname, enum nl80211_iftype iftype, 6306 const u8 *addr, int wds) 6307{ 6308 int ret; 6309 6310 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds); 6311 6312 /* if error occurred and interface exists already */ 6313 if (ret == -ENFILE && if_nametoindex(ifname)) { 6314 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname); 6315 6316 /* Try to remove the interface that was already there. */ 6317 nl80211_remove_iface(drv, if_nametoindex(ifname)); 6318 6319 /* Try to create the interface again */ 6320 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, 6321 wds); 6322 } 6323 6324 if (ret >= 0 && is_p2p_interface(iftype)) 6325 nl80211_disable_11b_rates(drv, ret, 1); 6326 6327 return ret; 6328} 6329 6330 6331static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok) 6332{ 6333 struct ieee80211_hdr *hdr; 6334 u16 fc; 6335 union wpa_event_data event; 6336 6337 hdr = (struct ieee80211_hdr *) buf; 6338 fc = le_to_host16(hdr->frame_control); 6339 6340 os_memset(&event, 0, sizeof(event)); 6341 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 6342 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 6343 event.tx_status.dst = hdr->addr1; 6344 event.tx_status.data = buf; 6345 event.tx_status.data_len = len; 6346 event.tx_status.ack = ok; 6347 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event); 6348} 6349 6350 6351static void from_unknown_sta(struct wpa_driver_nl80211_data *drv, 6352 u8 *buf, size_t len) 6353{ 6354 struct ieee80211_hdr *hdr = (void *)buf; 6355 u16 fc; 6356 union wpa_event_data event; 6357 6358 if (len < sizeof(*hdr)) 6359 return; 6360 6361 fc = le_to_host16(hdr->frame_control); 6362 6363 os_memset(&event, 0, sizeof(event)); 6364 event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len); 6365 event.rx_from_unknown.addr = hdr->addr2; 6366 event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) == 6367 (WLAN_FC_FROMDS | WLAN_FC_TODS); 6368 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 6369} 6370 6371 6372static void handle_frame(struct wpa_driver_nl80211_data *drv, 6373 u8 *buf, size_t len, int datarate, int ssi_signal) 6374{ 6375 struct ieee80211_hdr *hdr; 6376 u16 fc; 6377 union wpa_event_data event; 6378 6379 hdr = (struct ieee80211_hdr *) buf; 6380 fc = le_to_host16(hdr->frame_control); 6381 6382 switch (WLAN_FC_GET_TYPE(fc)) { 6383 case WLAN_FC_TYPE_MGMT: 6384 os_memset(&event, 0, sizeof(event)); 6385 event.rx_mgmt.frame = buf; 6386 event.rx_mgmt.frame_len = len; 6387 event.rx_mgmt.datarate = datarate; 6388 event.rx_mgmt.ssi_signal = ssi_signal; 6389 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 6390 break; 6391 case WLAN_FC_TYPE_CTRL: 6392 /* can only get here with PS-Poll frames */ 6393 wpa_printf(MSG_DEBUG, "CTRL"); 6394 from_unknown_sta(drv, buf, len); 6395 break; 6396 case WLAN_FC_TYPE_DATA: 6397 from_unknown_sta(drv, buf, len); 6398 break; 6399 } 6400} 6401 6402 6403static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx) 6404{ 6405 struct wpa_driver_nl80211_data *drv = eloop_ctx; 6406 int len; 6407 unsigned char buf[3000]; 6408 struct ieee80211_radiotap_iterator iter; 6409 int ret; 6410 int datarate = 0, ssi_signal = 0; 6411 int injected = 0, failed = 0, rxflags = 0; 6412 6413 len = recv(sock, buf, sizeof(buf), 0); 6414 if (len < 0) { 6415 perror("recv"); 6416 return; 6417 } 6418 6419 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) { 6420 printf("received invalid radiotap frame\n"); 6421 return; 6422 } 6423 6424 while (1) { 6425 ret = ieee80211_radiotap_iterator_next(&iter); 6426 if (ret == -ENOENT) 6427 break; 6428 if (ret) { 6429 printf("received invalid radiotap frame (%d)\n", ret); 6430 return; 6431 } 6432 switch (iter.this_arg_index) { 6433 case IEEE80211_RADIOTAP_FLAGS: 6434 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS) 6435 len -= 4; 6436 break; 6437 case IEEE80211_RADIOTAP_RX_FLAGS: 6438 rxflags = 1; 6439 break; 6440 case IEEE80211_RADIOTAP_TX_FLAGS: 6441 injected = 1; 6442 failed = le_to_host16((*(uint16_t *) iter.this_arg)) & 6443 IEEE80211_RADIOTAP_F_TX_FAIL; 6444 break; 6445 case IEEE80211_RADIOTAP_DATA_RETRIES: 6446 break; 6447 case IEEE80211_RADIOTAP_CHANNEL: 6448 /* TODO: convert from freq/flags to channel number */ 6449 break; 6450 case IEEE80211_RADIOTAP_RATE: 6451 datarate = *iter.this_arg * 5; 6452 break; 6453 case IEEE80211_RADIOTAP_DBM_ANTSIGNAL: 6454 ssi_signal = (s8) *iter.this_arg; 6455 break; 6456 } 6457 } 6458 6459 if (rxflags && injected) 6460 return; 6461 6462 if (!injected) 6463 handle_frame(drv, buf + iter.max_length, 6464 len - iter.max_length, datarate, ssi_signal); 6465 else 6466 handle_tx_callback(drv->ctx, buf + iter.max_length, 6467 len - iter.max_length, !failed); 6468} 6469 6470 6471/* 6472 * we post-process the filter code later and rewrite 6473 * this to the offset to the last instruction 6474 */ 6475#define PASS 0xFF 6476#define FAIL 0xFE 6477 6478static struct sock_filter msock_filter_insns[] = { 6479 /* 6480 * do a little-endian load of the radiotap length field 6481 */ 6482 /* load lower byte into A */ 6483 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2), 6484 /* put it into X (== index register) */ 6485 BPF_STMT(BPF_MISC| BPF_TAX, 0), 6486 /* load upper byte into A */ 6487 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3), 6488 /* left-shift it by 8 */ 6489 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8), 6490 /* or with X */ 6491 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0), 6492 /* put result into X */ 6493 BPF_STMT(BPF_MISC| BPF_TAX, 0), 6494 6495 /* 6496 * Allow management frames through, this also gives us those 6497 * management frames that we sent ourselves with status 6498 */ 6499 /* load the lower byte of the IEEE 802.11 frame control field */ 6500 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6501 /* mask off frame type and version */ 6502 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF), 6503 /* accept frame if it's both 0, fall through otherwise */ 6504 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0), 6505 6506 /* 6507 * TODO: add a bit to radiotap RX flags that indicates 6508 * that the sending station is not associated, then 6509 * add a filter here that filters on our DA and that flag 6510 * to allow us to deauth frames to that bad station. 6511 * 6512 * For now allow all To DS data frames through. 6513 */ 6514 /* load the IEEE 802.11 frame control field */ 6515 BPF_STMT(BPF_LD | BPF_H | BPF_IND, 0), 6516 /* mask off frame type, version and DS status */ 6517 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03), 6518 /* accept frame if version 0, type 2 and To DS, fall through otherwise 6519 */ 6520 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0), 6521 6522#if 0 6523 /* 6524 * drop non-data frames 6525 */ 6526 /* load the lower byte of the frame control field */ 6527 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6528 /* mask off QoS bit */ 6529 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c), 6530 /* drop non-data frames */ 6531 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL), 6532#endif 6533 /* load the upper byte of the frame control field */ 6534 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1), 6535 /* mask off toDS/fromDS */ 6536 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03), 6537 /* accept WDS frames */ 6538 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0), 6539 6540 /* 6541 * add header length to index 6542 */ 6543 /* load the lower byte of the frame control field */ 6544 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6545 /* mask off QoS bit */ 6546 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80), 6547 /* right shift it by 6 to give 0 or 2 */ 6548 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6), 6549 /* add data frame header length */ 6550 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24), 6551 /* add index, was start of 802.11 header */ 6552 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0), 6553 /* move to index, now start of LL header */ 6554 BPF_STMT(BPF_MISC | BPF_TAX, 0), 6555 6556 /* 6557 * Accept empty data frames, we use those for 6558 * polling activity. 6559 */ 6560 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0), 6561 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0), 6562 6563 /* 6564 * Accept EAPOL frames 6565 */ 6566 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0), 6567 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL), 6568 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4), 6569 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL), 6570 6571 /* keep these last two statements or change the code below */ 6572 /* return 0 == "DROP" */ 6573 BPF_STMT(BPF_RET | BPF_K, 0), 6574 /* return ~0 == "keep all" */ 6575 BPF_STMT(BPF_RET | BPF_K, ~0), 6576}; 6577 6578static struct sock_fprog msock_filter = { 6579 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]), 6580 .filter = msock_filter_insns, 6581}; 6582 6583 6584static int add_monitor_filter(int s) 6585{ 6586 int idx; 6587 6588 /* rewrite all PASS/FAIL jump offsets */ 6589 for (idx = 0; idx < msock_filter.len; idx++) { 6590 struct sock_filter *insn = &msock_filter_insns[idx]; 6591 6592 if (BPF_CLASS(insn->code) == BPF_JMP) { 6593 if (insn->code == (BPF_JMP|BPF_JA)) { 6594 if (insn->k == PASS) 6595 insn->k = msock_filter.len - idx - 2; 6596 else if (insn->k == FAIL) 6597 insn->k = msock_filter.len - idx - 3; 6598 } 6599 6600 if (insn->jt == PASS) 6601 insn->jt = msock_filter.len - idx - 2; 6602 else if (insn->jt == FAIL) 6603 insn->jt = msock_filter.len - idx - 3; 6604 6605 if (insn->jf == PASS) 6606 insn->jf = msock_filter.len - idx - 2; 6607 else if (insn->jf == FAIL) 6608 insn->jf = msock_filter.len - idx - 3; 6609 } 6610 } 6611 6612 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER, 6613 &msock_filter, sizeof(msock_filter))) { 6614 perror("SO_ATTACH_FILTER"); 6615 return -1; 6616 } 6617 6618 return 0; 6619} 6620 6621 6622static void nl80211_remove_monitor_interface( 6623 struct wpa_driver_nl80211_data *drv) 6624{ 6625 drv->monitor_refcount--; 6626 if (drv->monitor_refcount > 0) 6627 return; 6628 6629 if (drv->monitor_ifidx >= 0) { 6630 nl80211_remove_iface(drv, drv->monitor_ifidx); 6631 drv->monitor_ifidx = -1; 6632 } 6633 if (drv->monitor_sock >= 0) { 6634 eloop_unregister_read_sock(drv->monitor_sock); 6635 close(drv->monitor_sock); 6636 drv->monitor_sock = -1; 6637 } 6638} 6639 6640 6641static int 6642nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv) 6643{ 6644 char buf[IFNAMSIZ]; 6645 struct sockaddr_ll ll; 6646 int optval; 6647 socklen_t optlen; 6648 6649 if (drv->monitor_ifidx >= 0) { 6650 drv->monitor_refcount++; 6651 return 0; 6652 } 6653 6654 if (os_strncmp(drv->first_bss.ifname, "p2p-", 4) == 0) { 6655 /* 6656 * P2P interface name is of the format p2p-%s-%d. For monitor 6657 * interface name corresponding to P2P GO, replace "p2p-" with 6658 * "mon-" to retain the same interface name length and to 6659 * indicate that it is a monitor interface. 6660 */ 6661 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss.ifname + 4); 6662 } else { 6663 /* Non-P2P interface with AP functionality. */ 6664 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname); 6665 } 6666 6667 buf[IFNAMSIZ - 1] = '\0'; 6668 6669 drv->monitor_ifidx = 6670 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL, 6671 0); 6672 6673 if (drv->monitor_ifidx == -EOPNOTSUPP) { 6674 /* 6675 * This is backward compatibility for a few versions of 6676 * the kernel only that didn't advertise the right 6677 * attributes for the only driver that then supported 6678 * AP mode w/o monitor -- ath6kl. 6679 */ 6680 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support " 6681 "monitor interface type - try to run without it"); 6682 drv->device_ap_sme = 1; 6683 } 6684 6685 if (drv->monitor_ifidx < 0) 6686 return -1; 6687 6688 if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1)) 6689 goto error; 6690 6691 memset(&ll, 0, sizeof(ll)); 6692 ll.sll_family = AF_PACKET; 6693 ll.sll_ifindex = drv->monitor_ifidx; 6694 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); 6695 if (drv->monitor_sock < 0) { 6696 perror("socket[PF_PACKET,SOCK_RAW]"); 6697 goto error; 6698 } 6699 6700 if (add_monitor_filter(drv->monitor_sock)) { 6701 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor " 6702 "interface; do filtering in user space"); 6703 /* This works, but will cost in performance. */ 6704 } 6705 6706 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) { 6707 perror("monitor socket bind"); 6708 goto error; 6709 } 6710 6711 optlen = sizeof(optval); 6712 optval = 20; 6713 if (setsockopt 6714 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) { 6715 perror("Failed to set socket priority"); 6716 goto error; 6717 } 6718 6719 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read, 6720 drv, NULL)) { 6721 printf("Could not register monitor read socket\n"); 6722 goto error; 6723 } 6724 6725 return 0; 6726 error: 6727 nl80211_remove_monitor_interface(drv); 6728 return -1; 6729} 6730 6731 6732static int nl80211_setup_ap(struct i802_bss *bss) 6733{ 6734 struct wpa_driver_nl80211_data *drv = bss->drv; 6735 6736 wpa_printf(MSG_DEBUG, "nl80211: Setup AP - device_ap_sme=%d " 6737 "use_monitor=%d", drv->device_ap_sme, drv->use_monitor); 6738 6739 /* 6740 * Disable Probe Request reporting unless we need it in this way for 6741 * devices that include the AP SME, in the other case (unless using 6742 * monitor iface) we'll get it through the nl_mgmt socket instead. 6743 */ 6744 if (!drv->device_ap_sme) 6745 wpa_driver_nl80211_probe_req_report(bss, 0); 6746 6747 if (!drv->device_ap_sme && !drv->use_monitor) 6748 if (nl80211_mgmt_subscribe_ap(bss)) 6749 return -1; 6750 6751 if (drv->device_ap_sme && !drv->use_monitor) 6752 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 6753 return -1; 6754 6755 if (!drv->device_ap_sme && drv->use_monitor && 6756 nl80211_create_monitor_interface(drv) && 6757 !drv->device_ap_sme) 6758 return -1; 6759 6760#ifdef ANDROID_P2P 6761 if (drv->device_ap_sme && drv->use_monitor) 6762 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 6763 return -1; 6764 6765 if (drv->use_monitor && 6766 nl80211_create_monitor_interface(drv)) 6767 return -1; 6768#endif 6769 6770 if (drv->device_ap_sme && 6771 wpa_driver_nl80211_probe_req_report(bss, 1) < 0) { 6772 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable " 6773 "Probe Request frame reporting in AP mode"); 6774 /* Try to survive without this */ 6775 } 6776 6777 return 0; 6778} 6779 6780 6781static void nl80211_teardown_ap(struct i802_bss *bss) 6782{ 6783 struct wpa_driver_nl80211_data *drv = bss->drv; 6784 6785 if (drv->device_ap_sme) { 6786 wpa_driver_nl80211_probe_req_report(bss, 0); 6787 if (!drv->use_monitor) 6788 nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)"); 6789 } else if (drv->use_monitor) 6790 nl80211_remove_monitor_interface(drv); 6791 else 6792 nl80211_mgmt_unsubscribe(bss, "AP teardown"); 6793 6794 bss->beacon_set = 0; 6795} 6796 6797 6798static int nl80211_send_eapol_data(struct i802_bss *bss, 6799 const u8 *addr, const u8 *data, 6800 size_t data_len) 6801{ 6802 struct sockaddr_ll ll; 6803 int ret; 6804 6805 if (bss->drv->eapol_tx_sock < 0) { 6806 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL"); 6807 return -1; 6808 } 6809 6810 os_memset(&ll, 0, sizeof(ll)); 6811 ll.sll_family = AF_PACKET; 6812 ll.sll_ifindex = bss->ifindex; 6813 ll.sll_protocol = htons(ETH_P_PAE); 6814 ll.sll_halen = ETH_ALEN; 6815 os_memcpy(ll.sll_addr, addr, ETH_ALEN); 6816 ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0, 6817 (struct sockaddr *) &ll, sizeof(ll)); 6818 if (ret < 0) 6819 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s", 6820 strerror(errno)); 6821 6822 return ret; 6823} 6824 6825 6826static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 6827 6828static int wpa_driver_nl80211_hapd_send_eapol( 6829 void *priv, const u8 *addr, const u8 *data, 6830 size_t data_len, int encrypt, const u8 *own_addr, u32 flags) 6831{ 6832 struct i802_bss *bss = priv; 6833 struct wpa_driver_nl80211_data *drv = bss->drv; 6834 struct ieee80211_hdr *hdr; 6835 size_t len; 6836 u8 *pos; 6837 int res; 6838 int qos = flags & WPA_STA_WMM; 6839#ifndef ANDROID_P2P 6840 if (drv->device_ap_sme || !drv->use_monitor) 6841#else 6842 if (drv->device_ap_sme && !drv->use_monitor) 6843#endif 6844 return nl80211_send_eapol_data(bss, addr, data, data_len); 6845 6846 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 + 6847 data_len; 6848 hdr = os_zalloc(len); 6849 if (hdr == NULL) { 6850 printf("malloc() failed for i802_send_data(len=%lu)\n", 6851 (unsigned long) len); 6852 return -1; 6853 } 6854 6855 hdr->frame_control = 6856 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA); 6857 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS); 6858 if (encrypt) 6859 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP); 6860 if (qos) { 6861 hdr->frame_control |= 6862 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4); 6863 } 6864 6865 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN); 6866 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 6867 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 6868 pos = (u8 *) (hdr + 1); 6869 6870 if (qos) { 6871 /* Set highest priority in QoS header */ 6872 pos[0] = 7; 6873 pos[1] = 0; 6874 pos += 2; 6875 } 6876 6877 memcpy(pos, rfc1042_header, sizeof(rfc1042_header)); 6878 pos += sizeof(rfc1042_header); 6879 WPA_PUT_BE16(pos, ETH_P_PAE); 6880 pos += 2; 6881 memcpy(pos, data, data_len); 6882 6883 res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0, 6884 0, 0, 0, 0); 6885 if (res < 0) { 6886 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - " 6887 "failed: %d (%s)", 6888 (unsigned long) len, errno, strerror(errno)); 6889 } 6890 os_free(hdr); 6891 6892 return res; 6893} 6894 6895 6896static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr, 6897 int total_flags, 6898 int flags_or, int flags_and) 6899{ 6900 struct i802_bss *bss = priv; 6901 struct wpa_driver_nl80211_data *drv = bss->drv; 6902 struct nl_msg *msg; 6903 struct nlattr *flags; 6904 struct nl80211_sta_flag_update upd; 6905 6906 msg = nlmsg_alloc(); 6907 if (!msg) 6908 return -ENOMEM; 6909 6910 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 6911 6912 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 6913 if_nametoindex(bss->ifname)); 6914 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 6915 6916 /* 6917 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This 6918 * can be removed eventually. 6919 */ 6920 flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS); 6921 if (!flags) 6922 goto nla_put_failure; 6923 if (total_flags & WPA_STA_AUTHORIZED) 6924 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_AUTHORIZED); 6925 6926 if (total_flags & WPA_STA_WMM) 6927 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_WME); 6928 6929 if (total_flags & WPA_STA_SHORT_PREAMBLE) 6930 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_SHORT_PREAMBLE); 6931 6932 if (total_flags & WPA_STA_MFP) 6933 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_MFP); 6934 6935 if (total_flags & WPA_STA_TDLS_PEER) 6936 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_TDLS_PEER); 6937 6938 nla_nest_end(msg, flags); 6939 6940 os_memset(&upd, 0, sizeof(upd)); 6941 upd.mask = sta_flags_nl80211(flags_or | ~flags_and); 6942 upd.set = sta_flags_nl80211(flags_or); 6943 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 6944 6945 return send_and_recv_msgs(drv, msg, NULL, NULL); 6946 nla_put_failure: 6947 nlmsg_free(msg); 6948 return -ENOBUFS; 6949} 6950 6951 6952static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv, 6953 struct wpa_driver_associate_params *params) 6954{ 6955 enum nl80211_iftype nlmode, old_mode; 6956 struct hostapd_freq_params freq = { 6957 .freq = params->freq, 6958 }; 6959 6960 if (params->p2p) { 6961 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P " 6962 "group (GO)"); 6963 nlmode = NL80211_IFTYPE_P2P_GO; 6964 } else 6965 nlmode = NL80211_IFTYPE_AP; 6966 6967 old_mode = drv->nlmode; 6968 if (wpa_driver_nl80211_set_mode(&drv->first_bss, nlmode)) { 6969 nl80211_remove_monitor_interface(drv); 6970 return -1; 6971 } 6972 6973 if (wpa_driver_nl80211_set_freq(&drv->first_bss, &freq)) { 6974 if (old_mode != nlmode) 6975 wpa_driver_nl80211_set_mode(&drv->first_bss, old_mode); 6976 nl80211_remove_monitor_interface(drv); 6977 return -1; 6978 } 6979 6980 return 0; 6981} 6982 6983 6984static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv) 6985{ 6986 struct nl_msg *msg; 6987 int ret = -1; 6988 6989 msg = nlmsg_alloc(); 6990 if (!msg) 6991 return -1; 6992 6993 nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS); 6994 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6995 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6996 msg = NULL; 6997 if (ret) { 6998 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d " 6999 "(%s)", ret, strerror(-ret)); 7000 goto nla_put_failure; 7001 } 7002 7003 ret = 0; 7004 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully"); 7005 7006nla_put_failure: 7007 nlmsg_free(msg); 7008 return ret; 7009} 7010 7011 7012static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv, 7013 struct wpa_driver_associate_params *params) 7014{ 7015 struct nl_msg *msg; 7016 int ret = -1; 7017 int count = 0; 7018 7019 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex); 7020 7021 if (wpa_driver_nl80211_set_mode(&drv->first_bss, 7022 NL80211_IFTYPE_ADHOC)) { 7023 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into " 7024 "IBSS mode"); 7025 return -1; 7026 } 7027 7028retry: 7029 msg = nlmsg_alloc(); 7030 if (!msg) 7031 return -1; 7032 7033 nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS); 7034 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7035 7036 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid)) 7037 goto nla_put_failure; 7038 7039 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 7040 params->ssid, params->ssid_len); 7041 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 7042 params->ssid); 7043 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 7044 drv->ssid_len = params->ssid_len; 7045 7046 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 7047 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 7048 7049 ret = nl80211_set_conn_keys(params, msg); 7050 if (ret) 7051 goto nla_put_failure; 7052 7053 if (params->bssid && params->fixed_bssid) { 7054 wpa_printf(MSG_DEBUG, " * BSSID=" MACSTR, 7055 MAC2STR(params->bssid)); 7056 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 7057 } 7058 7059 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 7060 params->key_mgmt_suite == KEY_MGMT_PSK || 7061 params->key_mgmt_suite == KEY_MGMT_802_1X_SHA256 || 7062 params->key_mgmt_suite == KEY_MGMT_PSK_SHA256) { 7063 wpa_printf(MSG_DEBUG, " * control port"); 7064 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 7065 } 7066 7067 if (params->wpa_ie) { 7068 wpa_hexdump(MSG_DEBUG, 7069 " * Extra IEs for Beacon/Probe Response frames", 7070 params->wpa_ie, params->wpa_ie_len); 7071 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 7072 params->wpa_ie); 7073 } 7074 7075 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7076 msg = NULL; 7077 if (ret) { 7078 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)", 7079 ret, strerror(-ret)); 7080 count++; 7081 if (ret == -EALREADY && count == 1) { 7082 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after " 7083 "forced leave"); 7084 nl80211_leave_ibss(drv); 7085 nlmsg_free(msg); 7086 goto retry; 7087 } 7088 7089 goto nla_put_failure; 7090 } 7091 ret = 0; 7092 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully"); 7093 7094nla_put_failure: 7095 nlmsg_free(msg); 7096 return ret; 7097} 7098 7099 7100static int wpa_driver_nl80211_try_connect( 7101 struct wpa_driver_nl80211_data *drv, 7102 struct wpa_driver_associate_params *params) 7103{ 7104 struct nl_msg *msg; 7105 enum nl80211_auth_type type; 7106 int ret = 0; 7107 int algs; 7108 7109 msg = nlmsg_alloc(); 7110 if (!msg) 7111 return -1; 7112 7113 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex); 7114 nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT); 7115 7116 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7117 if (params->bssid) { 7118 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 7119 MAC2STR(params->bssid)); 7120 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 7121 } 7122 if (params->freq) { 7123 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 7124 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 7125 } 7126 if (params->bg_scan_period >= 0) { 7127 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 7128 params->bg_scan_period); 7129 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 7130 params->bg_scan_period); 7131 } 7132 if (params->ssid) { 7133 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 7134 params->ssid, params->ssid_len); 7135 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 7136 params->ssid); 7137 if (params->ssid_len > sizeof(drv->ssid)) 7138 goto nla_put_failure; 7139 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 7140 drv->ssid_len = params->ssid_len; 7141 } 7142 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 7143 if (params->wpa_ie) 7144 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 7145 params->wpa_ie); 7146 7147 algs = 0; 7148 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 7149 algs++; 7150 if (params->auth_alg & WPA_AUTH_ALG_SHARED) 7151 algs++; 7152 if (params->auth_alg & WPA_AUTH_ALG_LEAP) 7153 algs++; 7154 if (algs > 1) { 7155 wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic " 7156 "selection"); 7157 goto skip_auth_type; 7158 } 7159 7160 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 7161 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 7162 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 7163 type = NL80211_AUTHTYPE_SHARED_KEY; 7164 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 7165 type = NL80211_AUTHTYPE_NETWORK_EAP; 7166 else if (params->auth_alg & WPA_AUTH_ALG_FT) 7167 type = NL80211_AUTHTYPE_FT; 7168 else 7169 goto nla_put_failure; 7170 7171 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 7172 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 7173 7174skip_auth_type: 7175 if (params->wpa_proto) { 7176 enum nl80211_wpa_versions ver = 0; 7177 7178 if (params->wpa_proto & WPA_PROTO_WPA) 7179 ver |= NL80211_WPA_VERSION_1; 7180 if (params->wpa_proto & WPA_PROTO_RSN) 7181 ver |= NL80211_WPA_VERSION_2; 7182 7183 wpa_printf(MSG_DEBUG, " * WPA Versions 0x%x", ver); 7184 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 7185 } 7186 7187 if (params->pairwise_suite != CIPHER_NONE) { 7188 int cipher; 7189 7190 switch (params->pairwise_suite) { 7191 case CIPHER_SMS4: 7192 cipher = WLAN_CIPHER_SUITE_SMS4; 7193 break; 7194 case CIPHER_WEP40: 7195 cipher = WLAN_CIPHER_SUITE_WEP40; 7196 break; 7197 case CIPHER_WEP104: 7198 cipher = WLAN_CIPHER_SUITE_WEP104; 7199 break; 7200 case CIPHER_CCMP: 7201 cipher = WLAN_CIPHER_SUITE_CCMP; 7202 break; 7203 case CIPHER_GCMP: 7204 cipher = WLAN_CIPHER_SUITE_GCMP; 7205 break; 7206 case CIPHER_TKIP: 7207 default: 7208 cipher = WLAN_CIPHER_SUITE_TKIP; 7209 break; 7210 } 7211 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 7212 } 7213 7214 if (params->group_suite != CIPHER_NONE) { 7215 int cipher; 7216 7217 switch (params->group_suite) { 7218 case CIPHER_SMS4: 7219 cipher = WLAN_CIPHER_SUITE_SMS4; 7220 break; 7221 case CIPHER_WEP40: 7222 cipher = WLAN_CIPHER_SUITE_WEP40; 7223 break; 7224 case CIPHER_WEP104: 7225 cipher = WLAN_CIPHER_SUITE_WEP104; 7226 break; 7227 case CIPHER_CCMP: 7228 cipher = WLAN_CIPHER_SUITE_CCMP; 7229 break; 7230 case CIPHER_GCMP: 7231 cipher = WLAN_CIPHER_SUITE_GCMP; 7232 break; 7233 case CIPHER_TKIP: 7234 default: 7235 cipher = WLAN_CIPHER_SUITE_TKIP; 7236 break; 7237 } 7238 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 7239 } 7240 7241 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 7242 params->key_mgmt_suite == KEY_MGMT_PSK || 7243 params->key_mgmt_suite == KEY_MGMT_FT_802_1X || 7244 params->key_mgmt_suite == KEY_MGMT_FT_PSK || 7245 params->key_mgmt_suite == KEY_MGMT_CCKM) { 7246 int mgmt = WLAN_AKM_SUITE_PSK; 7247 7248 switch (params->key_mgmt_suite) { 7249 case KEY_MGMT_CCKM: 7250 mgmt = WLAN_AKM_SUITE_CCKM; 7251 break; 7252 case KEY_MGMT_802_1X: 7253 mgmt = WLAN_AKM_SUITE_8021X; 7254 break; 7255 case KEY_MGMT_FT_802_1X: 7256 mgmt = WLAN_AKM_SUITE_FT_8021X; 7257 break; 7258 case KEY_MGMT_FT_PSK: 7259 mgmt = WLAN_AKM_SUITE_FT_PSK; 7260 break; 7261 case KEY_MGMT_PSK: 7262 default: 7263 mgmt = WLAN_AKM_SUITE_PSK; 7264 break; 7265 } 7266 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt); 7267 } 7268 7269#ifdef CONFIG_IEEE80211W 7270 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED) 7271 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED); 7272#endif /* CONFIG_IEEE80211W */ 7273 7274 if (params->disable_ht) 7275 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 7276 7277 if (params->htcaps && params->htcaps_mask) { 7278 int sz = sizeof(struct ieee80211_ht_capabilities); 7279 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 7280 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 7281 params->htcaps_mask); 7282 } 7283 7284#ifdef CONFIG_VHT_OVERRIDES 7285 if (params->disable_vht) { 7286 wpa_printf(MSG_DEBUG, " * VHT disabled"); 7287 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_VHT); 7288 } 7289 7290 if (params->vhtcaps && params->vhtcaps_mask) { 7291 int sz = sizeof(struct ieee80211_vht_capabilities); 7292 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, sz, params->vhtcaps); 7293 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz, 7294 params->vhtcaps_mask); 7295 } 7296#endif /* CONFIG_VHT_OVERRIDES */ 7297 7298 ret = nl80211_set_conn_keys(params, msg); 7299 if (ret) 7300 goto nla_put_failure; 7301 7302 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7303 msg = NULL; 7304 if (ret) { 7305 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d " 7306 "(%s)", ret, strerror(-ret)); 7307 goto nla_put_failure; 7308 } 7309 ret = 0; 7310 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully"); 7311 7312nla_put_failure: 7313 nlmsg_free(msg); 7314 return ret; 7315 7316} 7317 7318 7319static int wpa_driver_nl80211_connect( 7320 struct wpa_driver_nl80211_data *drv, 7321 struct wpa_driver_associate_params *params) 7322{ 7323 int ret = wpa_driver_nl80211_try_connect(drv, params); 7324 if (ret == -EALREADY) { 7325 /* 7326 * cfg80211 does not currently accept new connections if 7327 * we are already connected. As a workaround, force 7328 * disconnection and try again. 7329 */ 7330 wpa_printf(MSG_DEBUG, "nl80211: Explicitly " 7331 "disconnecting before reassociation " 7332 "attempt"); 7333 if (wpa_driver_nl80211_disconnect( 7334 drv, WLAN_REASON_PREV_AUTH_NOT_VALID)) 7335 return -1; 7336 /* Ignore the next local disconnect message. */ 7337 drv->ignore_next_local_disconnect = 1; 7338 ret = wpa_driver_nl80211_try_connect(drv, params); 7339 } 7340 return ret; 7341} 7342 7343 7344static int wpa_driver_nl80211_associate( 7345 void *priv, struct wpa_driver_associate_params *params) 7346{ 7347 struct i802_bss *bss = priv; 7348 struct wpa_driver_nl80211_data *drv = bss->drv; 7349 int ret = -1; 7350 struct nl_msg *msg; 7351 7352 if (params->mode == IEEE80211_MODE_AP) 7353 return wpa_driver_nl80211_ap(drv, params); 7354 7355 if (params->mode == IEEE80211_MODE_IBSS) 7356 return wpa_driver_nl80211_ibss(drv, params); 7357 7358 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) { 7359 enum nl80211_iftype nlmode = params->p2p ? 7360 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 7361 7362 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0) 7363 return -1; 7364 return wpa_driver_nl80211_connect(drv, params); 7365 } 7366 7367 drv->associated = 0; 7368 7369 msg = nlmsg_alloc(); 7370 if (!msg) 7371 return -1; 7372 7373 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)", 7374 drv->ifindex); 7375 nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE); 7376 7377 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7378 if (params->bssid) { 7379 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 7380 MAC2STR(params->bssid)); 7381 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 7382 } 7383 if (params->freq) { 7384 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 7385 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 7386 drv->assoc_freq = params->freq; 7387 } else 7388 drv->assoc_freq = 0; 7389 if (params->bg_scan_period >= 0) { 7390 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 7391 params->bg_scan_period); 7392 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 7393 params->bg_scan_period); 7394 } 7395 if (params->ssid) { 7396 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 7397 params->ssid, params->ssid_len); 7398 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 7399 params->ssid); 7400 if (params->ssid_len > sizeof(drv->ssid)) 7401 goto nla_put_failure; 7402 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 7403 drv->ssid_len = params->ssid_len; 7404 } 7405 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 7406 if (params->wpa_ie) 7407 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 7408 params->wpa_ie); 7409 7410 if (params->pairwise_suite != CIPHER_NONE) { 7411 int cipher; 7412 7413 switch (params->pairwise_suite) { 7414 case CIPHER_WEP40: 7415 cipher = WLAN_CIPHER_SUITE_WEP40; 7416 break; 7417 case CIPHER_WEP104: 7418 cipher = WLAN_CIPHER_SUITE_WEP104; 7419 break; 7420 case CIPHER_CCMP: 7421 cipher = WLAN_CIPHER_SUITE_CCMP; 7422 break; 7423 case CIPHER_GCMP: 7424 cipher = WLAN_CIPHER_SUITE_GCMP; 7425 break; 7426 case CIPHER_TKIP: 7427 default: 7428 cipher = WLAN_CIPHER_SUITE_TKIP; 7429 break; 7430 } 7431 wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher); 7432 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 7433 } 7434 7435 if (params->group_suite != CIPHER_NONE) { 7436 int cipher; 7437 7438 switch (params->group_suite) { 7439 case CIPHER_WEP40: 7440 cipher = WLAN_CIPHER_SUITE_WEP40; 7441 break; 7442 case CIPHER_WEP104: 7443 cipher = WLAN_CIPHER_SUITE_WEP104; 7444 break; 7445 case CIPHER_CCMP: 7446 cipher = WLAN_CIPHER_SUITE_CCMP; 7447 break; 7448 case CIPHER_GCMP: 7449 cipher = WLAN_CIPHER_SUITE_GCMP; 7450 break; 7451 case CIPHER_TKIP: 7452 default: 7453 cipher = WLAN_CIPHER_SUITE_TKIP; 7454 break; 7455 } 7456 wpa_printf(MSG_DEBUG, " * group=0x%x", cipher); 7457 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 7458 } 7459 7460#ifdef CONFIG_IEEE80211W 7461 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED) 7462 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED); 7463#endif /* CONFIG_IEEE80211W */ 7464 7465 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 7466 7467 if (params->prev_bssid) { 7468 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR, 7469 MAC2STR(params->prev_bssid)); 7470 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN, 7471 params->prev_bssid); 7472 } 7473 7474 if (params->disable_ht) 7475 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 7476 7477 if (params->htcaps && params->htcaps_mask) { 7478 int sz = sizeof(struct ieee80211_ht_capabilities); 7479 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 7480 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 7481 params->htcaps_mask); 7482 } 7483 7484#ifdef CONFIG_VHT_OVERRIDES 7485 if (params->disable_vht) { 7486 wpa_printf(MSG_DEBUG, " * VHT disabled"); 7487 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_VHT); 7488 } 7489 7490 if (params->vhtcaps && params->vhtcaps_mask) { 7491 int sz = sizeof(struct ieee80211_vht_capabilities); 7492 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, sz, params->vhtcaps); 7493 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz, 7494 params->vhtcaps_mask); 7495 } 7496#endif /* CONFIG_VHT_OVERRIDES */ 7497 7498 if (params->p2p) 7499 wpa_printf(MSG_DEBUG, " * P2P group"); 7500 7501 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7502 msg = NULL; 7503 if (ret) { 7504 wpa_dbg(drv->ctx, MSG_DEBUG, 7505 "nl80211: MLME command failed (assoc): ret=%d (%s)", 7506 ret, strerror(-ret)); 7507 nl80211_dump_scan(drv); 7508 goto nla_put_failure; 7509 } 7510 ret = 0; 7511 wpa_printf(MSG_DEBUG, "nl80211: Association request send " 7512 "successfully"); 7513 7514nla_put_failure: 7515 nlmsg_free(msg); 7516 return ret; 7517} 7518 7519 7520static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv, 7521 int ifindex, enum nl80211_iftype mode) 7522{ 7523 struct nl_msg *msg; 7524 int ret = -ENOBUFS; 7525 7526 wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)", 7527 ifindex, mode, nl80211_iftype_str(mode)); 7528 7529 msg = nlmsg_alloc(); 7530 if (!msg) 7531 return -ENOMEM; 7532 7533 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE); 7534 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 7535 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode); 7536 7537 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7538 msg = NULL; 7539 if (!ret) 7540 return 0; 7541nla_put_failure: 7542 nlmsg_free(msg); 7543 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:" 7544 " %d (%s)", ifindex, mode, ret, strerror(-ret)); 7545 return ret; 7546} 7547 7548 7549static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, 7550 enum nl80211_iftype nlmode) 7551{ 7552 struct wpa_driver_nl80211_data *drv = bss->drv; 7553 int ret = -1; 7554 int i; 7555 int was_ap = is_ap_interface(drv->nlmode); 7556 int res; 7557 7558 res = nl80211_set_mode(drv, drv->ifindex, nlmode); 7559 if (res == 0) { 7560 drv->nlmode = nlmode; 7561 ret = 0; 7562 goto done; 7563 } 7564 7565 if (res == -ENODEV) 7566 return -1; 7567 7568 if (nlmode == drv->nlmode) { 7569 wpa_printf(MSG_DEBUG, "nl80211: Interface already in " 7570 "requested mode - ignore error"); 7571 ret = 0; 7572 goto done; /* Already in the requested mode */ 7573 } 7574 7575 /* mac80211 doesn't allow mode changes while the device is up, so 7576 * take the device down, try to set the mode again, and bring the 7577 * device back up. 7578 */ 7579 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting " 7580 "interface down"); 7581 for (i = 0; i < 10; i++) { 7582 res = linux_set_iface_flags(drv->global->ioctl_sock, 7583 bss->ifname, 0); 7584 if (res == -EACCES || res == -ENODEV) 7585 break; 7586 if (res == 0) { 7587 /* Try to set the mode again while the interface is 7588 * down */ 7589 ret = nl80211_set_mode(drv, drv->ifindex, nlmode); 7590 if (ret == -EACCES) 7591 break; 7592 res = linux_set_iface_flags(drv->global->ioctl_sock, 7593 bss->ifname, 1); 7594 if (res && !ret) 7595 ret = -1; 7596 else if (ret != -EBUSY) 7597 break; 7598 } else 7599 wpa_printf(MSG_DEBUG, "nl80211: Failed to set " 7600 "interface down"); 7601 os_sleep(0, 100000); 7602 } 7603 7604 if (!ret) { 7605 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while " 7606 "interface is down"); 7607 drv->nlmode = nlmode; 7608 drv->ignore_if_down_event = 1; 7609 } 7610 7611done: 7612 if (ret) { 7613 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d " 7614 "from %d failed", nlmode, drv->nlmode); 7615 return ret; 7616 } 7617 7618 if (is_p2p_interface(nlmode)) 7619 nl80211_disable_11b_rates(drv, drv->ifindex, 1); 7620 else if (drv->disabled_11b_rates) 7621 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 7622 7623 if (is_ap_interface(nlmode)) { 7624 nl80211_mgmt_unsubscribe(bss, "start AP"); 7625 /* Setup additional AP mode functionality if needed */ 7626 if (nl80211_setup_ap(bss)) 7627 return -1; 7628 } else if (was_ap) { 7629 /* Remove additional AP mode functionality */ 7630 nl80211_teardown_ap(bss); 7631 } else { 7632 nl80211_mgmt_unsubscribe(bss, "mode change"); 7633 } 7634 7635 if (!bss->in_deinit && !is_ap_interface(nlmode) && 7636 nl80211_mgmt_subscribe_non_ap(bss) < 0) 7637 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action " 7638 "frame processing - ignore for now"); 7639 7640 return 0; 7641} 7642 7643 7644static int wpa_driver_nl80211_get_capa(void *priv, 7645 struct wpa_driver_capa *capa) 7646{ 7647 struct i802_bss *bss = priv; 7648 struct wpa_driver_nl80211_data *drv = bss->drv; 7649 if (!drv->has_capability) 7650 return -1; 7651 os_memcpy(capa, &drv->capa, sizeof(*capa)); 7652 if (drv->extended_capa && drv->extended_capa_mask) { 7653 capa->extended_capa = drv->extended_capa; 7654 capa->extended_capa_mask = drv->extended_capa_mask; 7655 capa->extended_capa_len = drv->extended_capa_len; 7656 } 7657 return 0; 7658} 7659 7660 7661static int wpa_driver_nl80211_set_operstate(void *priv, int state) 7662{ 7663 struct i802_bss *bss = priv; 7664 struct wpa_driver_nl80211_data *drv = bss->drv; 7665 7666 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)", 7667 __func__, drv->operstate, state, state ? "UP" : "DORMANT"); 7668 drv->operstate = state; 7669 return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1, 7670 state ? IF_OPER_UP : IF_OPER_DORMANT); 7671} 7672 7673 7674static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized) 7675{ 7676 struct i802_bss *bss = priv; 7677 struct wpa_driver_nl80211_data *drv = bss->drv; 7678 struct nl_msg *msg; 7679 struct nl80211_sta_flag_update upd; 7680 7681 msg = nlmsg_alloc(); 7682 if (!msg) 7683 return -ENOMEM; 7684 7685 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 7686 7687 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7688 if_nametoindex(bss->ifname)); 7689 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 7690 7691 os_memset(&upd, 0, sizeof(upd)); 7692 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED); 7693 if (authorized) 7694 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED); 7695 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 7696 7697 return send_and_recv_msgs(drv, msg, NULL, NULL); 7698 nla_put_failure: 7699 nlmsg_free(msg); 7700 return -ENOBUFS; 7701} 7702 7703 7704/* Set kernel driver on given frequency (MHz) */ 7705static int i802_set_freq(void *priv, struct hostapd_freq_params *freq) 7706{ 7707 struct i802_bss *bss = priv; 7708 return wpa_driver_nl80211_set_freq(bss, freq); 7709} 7710 7711 7712#if defined(HOSTAPD) || defined(CONFIG_AP) 7713 7714static inline int min_int(int a, int b) 7715{ 7716 if (a < b) 7717 return a; 7718 return b; 7719} 7720 7721 7722static int get_key_handler(struct nl_msg *msg, void *arg) 7723{ 7724 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7725 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7726 7727 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7728 genlmsg_attrlen(gnlh, 0), NULL); 7729 7730 /* 7731 * TODO: validate the key index and mac address! 7732 * Otherwise, there's a race condition as soon as 7733 * the kernel starts sending key notifications. 7734 */ 7735 7736 if (tb[NL80211_ATTR_KEY_SEQ]) 7737 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]), 7738 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6)); 7739 return NL_SKIP; 7740} 7741 7742 7743static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr, 7744 int idx, u8 *seq) 7745{ 7746 struct i802_bss *bss = priv; 7747 struct wpa_driver_nl80211_data *drv = bss->drv; 7748 struct nl_msg *msg; 7749 7750 msg = nlmsg_alloc(); 7751 if (!msg) 7752 return -ENOMEM; 7753 7754 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY); 7755 7756 if (addr) 7757 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7758 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx); 7759 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface)); 7760 7761 memset(seq, 0, 6); 7762 7763 return send_and_recv_msgs(drv, msg, get_key_handler, seq); 7764 nla_put_failure: 7765 nlmsg_free(msg); 7766 return -ENOBUFS; 7767} 7768 7769 7770static int i802_set_rts(void *priv, int rts) 7771{ 7772 struct i802_bss *bss = priv; 7773 struct wpa_driver_nl80211_data *drv = bss->drv; 7774 struct nl_msg *msg; 7775 int ret = -ENOBUFS; 7776 u32 val; 7777 7778 msg = nlmsg_alloc(); 7779 if (!msg) 7780 return -ENOMEM; 7781 7782 if (rts >= 2347) 7783 val = (u32) -1; 7784 else 7785 val = rts; 7786 7787 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7788 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7789 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val); 7790 7791 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7792 msg = NULL; 7793 if (!ret) 7794 return 0; 7795nla_put_failure: 7796 nlmsg_free(msg); 7797 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: " 7798 "%d (%s)", rts, ret, strerror(-ret)); 7799 return ret; 7800} 7801 7802 7803static int i802_set_frag(void *priv, int frag) 7804{ 7805 struct i802_bss *bss = priv; 7806 struct wpa_driver_nl80211_data *drv = bss->drv; 7807 struct nl_msg *msg; 7808 int ret = -ENOBUFS; 7809 u32 val; 7810 7811 msg = nlmsg_alloc(); 7812 if (!msg) 7813 return -ENOMEM; 7814 7815 if (frag >= 2346) 7816 val = (u32) -1; 7817 else 7818 val = frag; 7819 7820 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7821 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7822 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val); 7823 7824 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7825 msg = NULL; 7826 if (!ret) 7827 return 0; 7828nla_put_failure: 7829 nlmsg_free(msg); 7830 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold " 7831 "%d: %d (%s)", frag, ret, strerror(-ret)); 7832 return ret; 7833} 7834 7835 7836static int i802_flush(void *priv) 7837{ 7838 struct i802_bss *bss = priv; 7839 struct wpa_driver_nl80211_data *drv = bss->drv; 7840 struct nl_msg *msg; 7841 int res; 7842 7843 msg = nlmsg_alloc(); 7844 if (!msg) 7845 return -1; 7846 7847 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 7848 7849 /* 7850 * XXX: FIX! this needs to flush all VLANs too 7851 */ 7852 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7853 if_nametoindex(bss->ifname)); 7854 7855 res = send_and_recv_msgs(drv, msg, NULL, NULL); 7856 if (res) { 7857 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d " 7858 "(%s)", res, strerror(-res)); 7859 } 7860 return res; 7861 nla_put_failure: 7862 nlmsg_free(msg); 7863 return -ENOBUFS; 7864} 7865 7866#endif /* HOSTAPD || CONFIG_AP */ 7867 7868 7869static int get_sta_handler(struct nl_msg *msg, void *arg) 7870{ 7871 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7872 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7873 struct hostap_sta_driver_data *data = arg; 7874 struct nlattr *stats[NL80211_STA_INFO_MAX + 1]; 7875 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = { 7876 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 }, 7877 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 }, 7878 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 }, 7879 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 }, 7880 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 }, 7881 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 }, 7882 }; 7883 7884 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7885 genlmsg_attrlen(gnlh, 0), NULL); 7886 7887 /* 7888 * TODO: validate the interface and mac address! 7889 * Otherwise, there's a race condition as soon as 7890 * the kernel starts sending station notifications. 7891 */ 7892 7893 if (!tb[NL80211_ATTR_STA_INFO]) { 7894 wpa_printf(MSG_DEBUG, "sta stats missing!"); 7895 return NL_SKIP; 7896 } 7897 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX, 7898 tb[NL80211_ATTR_STA_INFO], 7899 stats_policy)) { 7900 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!"); 7901 return NL_SKIP; 7902 } 7903 7904 if (stats[NL80211_STA_INFO_INACTIVE_TIME]) 7905 data->inactive_msec = 7906 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]); 7907 if (stats[NL80211_STA_INFO_RX_BYTES]) 7908 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]); 7909 if (stats[NL80211_STA_INFO_TX_BYTES]) 7910 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]); 7911 if (stats[NL80211_STA_INFO_RX_PACKETS]) 7912 data->rx_packets = 7913 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]); 7914 if (stats[NL80211_STA_INFO_TX_PACKETS]) 7915 data->tx_packets = 7916 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]); 7917 if (stats[NL80211_STA_INFO_TX_FAILED]) 7918 data->tx_retry_failed = 7919 nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]); 7920 7921 return NL_SKIP; 7922} 7923 7924static int i802_read_sta_data(struct i802_bss *bss, 7925 struct hostap_sta_driver_data *data, 7926 const u8 *addr) 7927{ 7928 struct wpa_driver_nl80211_data *drv = bss->drv; 7929 struct nl_msg *msg; 7930 7931 os_memset(data, 0, sizeof(*data)); 7932 msg = nlmsg_alloc(); 7933 if (!msg) 7934 return -ENOMEM; 7935 7936 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 7937 7938 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7939 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 7940 7941 return send_and_recv_msgs(drv, msg, get_sta_handler, data); 7942 nla_put_failure: 7943 nlmsg_free(msg); 7944 return -ENOBUFS; 7945} 7946 7947 7948#if defined(HOSTAPD) || defined(CONFIG_AP) 7949 7950static int i802_set_tx_queue_params(void *priv, int queue, int aifs, 7951 int cw_min, int cw_max, int burst_time) 7952{ 7953 struct i802_bss *bss = priv; 7954 struct wpa_driver_nl80211_data *drv = bss->drv; 7955 struct nl_msg *msg; 7956 struct nlattr *txq, *params; 7957 7958 msg = nlmsg_alloc(); 7959 if (!msg) 7960 return -1; 7961 7962 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7963 7964 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 7965 7966 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS); 7967 if (!txq) 7968 goto nla_put_failure; 7969 7970 /* We are only sending parameters for a single TXQ at a time */ 7971 params = nla_nest_start(msg, 1); 7972 if (!params) 7973 goto nla_put_failure; 7974 7975 switch (queue) { 7976 case 0: 7977 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO); 7978 break; 7979 case 1: 7980 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI); 7981 break; 7982 case 2: 7983 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE); 7984 break; 7985 case 3: 7986 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK); 7987 break; 7988 } 7989 /* Burst time is configured in units of 0.1 msec and TXOP parameter in 7990 * 32 usec, so need to convert the value here. */ 7991 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32); 7992 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min); 7993 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max); 7994 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs); 7995 7996 nla_nest_end(msg, params); 7997 7998 nla_nest_end(msg, txq); 7999 8000 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 8001 return 0; 8002 msg = NULL; 8003 nla_put_failure: 8004 nlmsg_free(msg); 8005 return -1; 8006} 8007 8008 8009static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr, 8010 const char *ifname, int vlan_id) 8011{ 8012 struct wpa_driver_nl80211_data *drv = bss->drv; 8013 struct nl_msg *msg; 8014 int ret = -ENOBUFS; 8015 8016 msg = nlmsg_alloc(); 8017 if (!msg) 8018 return -ENOMEM; 8019 8020 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 8021 8022 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 8023 if_nametoindex(bss->ifname)); 8024 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 8025 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN, 8026 if_nametoindex(ifname)); 8027 8028 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8029 msg = NULL; 8030 if (ret < 0) { 8031 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr=" 8032 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)", 8033 MAC2STR(addr), ifname, vlan_id, ret, 8034 strerror(-ret)); 8035 } 8036 nla_put_failure: 8037 nlmsg_free(msg); 8038 return ret; 8039} 8040 8041 8042static int i802_get_inact_sec(void *priv, const u8 *addr) 8043{ 8044 struct hostap_sta_driver_data data; 8045 int ret; 8046 8047 data.inactive_msec = (unsigned long) -1; 8048 ret = i802_read_sta_data(priv, &data, addr); 8049 if (ret || data.inactive_msec == (unsigned long) -1) 8050 return -1; 8051 return data.inactive_msec / 1000; 8052} 8053 8054 8055static int i802_sta_clear_stats(void *priv, const u8 *addr) 8056{ 8057#if 0 8058 /* TODO */ 8059#endif 8060 return 0; 8061} 8062 8063 8064static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, 8065 int reason) 8066{ 8067 struct i802_bss *bss = priv; 8068 struct wpa_driver_nl80211_data *drv = bss->drv; 8069 struct ieee80211_mgmt mgmt; 8070 8071 if (drv->device_ap_sme) 8072 return wpa_driver_nl80211_sta_remove(bss, addr); 8073 8074 memset(&mgmt, 0, sizeof(mgmt)); 8075 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 8076 WLAN_FC_STYPE_DEAUTH); 8077 memcpy(mgmt.da, addr, ETH_ALEN); 8078 memcpy(mgmt.sa, own_addr, ETH_ALEN); 8079 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 8080 mgmt.u.deauth.reason_code = host_to_le16(reason); 8081 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 8082 IEEE80211_HDRLEN + 8083 sizeof(mgmt.u.deauth), 0, 0, 0, 0, 8084 0); 8085} 8086 8087 8088static int i802_sta_disassoc(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_DISASSOC); 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.disassoc.reason_code = host_to_le16(reason); 8105 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 8106 IEEE80211_HDRLEN + 8107 sizeof(mgmt.u.disassoc), 0, 0, 0, 0, 8108 0); 8109} 8110 8111#endif /* HOSTAPD || CONFIG_AP */ 8112 8113#ifdef HOSTAPD 8114 8115static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 8116{ 8117 int i; 8118 int *old; 8119 8120 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d", 8121 ifidx); 8122 for (i = 0; i < drv->num_if_indices; i++) { 8123 if (drv->if_indices[i] == 0) { 8124 drv->if_indices[i] = ifidx; 8125 return; 8126 } 8127 } 8128 8129 if (drv->if_indices != drv->default_if_indices) 8130 old = drv->if_indices; 8131 else 8132 old = NULL; 8133 8134 drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1, 8135 sizeof(int)); 8136 if (!drv->if_indices) { 8137 if (!old) 8138 drv->if_indices = drv->default_if_indices; 8139 else 8140 drv->if_indices = old; 8141 wpa_printf(MSG_ERROR, "Failed to reallocate memory for " 8142 "interfaces"); 8143 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx); 8144 return; 8145 } else if (!old) 8146 os_memcpy(drv->if_indices, drv->default_if_indices, 8147 sizeof(drv->default_if_indices)); 8148 drv->if_indices[drv->num_if_indices] = ifidx; 8149 drv->num_if_indices++; 8150} 8151 8152 8153static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 8154{ 8155 int i; 8156 8157 for (i = 0; i < drv->num_if_indices; i++) { 8158 if (drv->if_indices[i] == ifidx) { 8159 drv->if_indices[i] = 0; 8160 break; 8161 } 8162 } 8163} 8164 8165 8166static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 8167{ 8168 int i; 8169 8170 for (i = 0; i < drv->num_if_indices; i++) 8171 if (drv->if_indices[i] == ifidx) 8172 return 1; 8173 8174 return 0; 8175} 8176 8177 8178static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val, 8179 const char *bridge_ifname) 8180{ 8181 struct i802_bss *bss = priv; 8182 struct wpa_driver_nl80211_data *drv = bss->drv; 8183 char name[IFNAMSIZ + 1]; 8184 8185 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid); 8186 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR 8187 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name); 8188 if (val) { 8189 if (!if_nametoindex(name)) { 8190 if (nl80211_create_iface(drv, name, 8191 NL80211_IFTYPE_AP_VLAN, 8192 bss->addr, 1) < 0) 8193 return -1; 8194 if (bridge_ifname && 8195 linux_br_add_if(drv->global->ioctl_sock, 8196 bridge_ifname, name) < 0) 8197 return -1; 8198 } 8199 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) { 8200 wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA " 8201 "interface %s up", name); 8202 } 8203 return i802_set_sta_vlan(priv, addr, name, 0); 8204 } else { 8205 if (bridge_ifname) 8206 linux_br_del_if(drv->global->ioctl_sock, bridge_ifname, 8207 name); 8208 8209 i802_set_sta_vlan(priv, addr, bss->ifname, 0); 8210 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN, 8211 name); 8212 } 8213} 8214 8215 8216static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx) 8217{ 8218 struct wpa_driver_nl80211_data *drv = eloop_ctx; 8219 struct sockaddr_ll lladdr; 8220 unsigned char buf[3000]; 8221 int len; 8222 socklen_t fromlen = sizeof(lladdr); 8223 8224 len = recvfrom(sock, buf, sizeof(buf), 0, 8225 (struct sockaddr *)&lladdr, &fromlen); 8226 if (len < 0) { 8227 perror("recv"); 8228 return; 8229 } 8230 8231 if (have_ifidx(drv, lladdr.sll_ifindex)) 8232 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len); 8233} 8234 8235 8236static int i802_check_bridge(struct wpa_driver_nl80211_data *drv, 8237 struct i802_bss *bss, 8238 const char *brname, const char *ifname) 8239{ 8240 int ifindex; 8241 char in_br[IFNAMSIZ]; 8242 8243 os_strlcpy(bss->brname, brname, IFNAMSIZ); 8244 ifindex = if_nametoindex(brname); 8245 if (ifindex == 0) { 8246 /* 8247 * Bridge was configured, but the bridge device does 8248 * not exist. Try to add it now. 8249 */ 8250 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) { 8251 wpa_printf(MSG_ERROR, "nl80211: Failed to add the " 8252 "bridge interface %s: %s", 8253 brname, strerror(errno)); 8254 return -1; 8255 } 8256 bss->added_bridge = 1; 8257 add_ifidx(drv, if_nametoindex(brname)); 8258 } 8259 8260 if (linux_br_get(in_br, ifname) == 0) { 8261 if (os_strcmp(in_br, brname) == 0) 8262 return 0; /* already in the bridge */ 8263 8264 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from " 8265 "bridge %s", ifname, in_br); 8266 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) < 8267 0) { 8268 wpa_printf(MSG_ERROR, "nl80211: Failed to " 8269 "remove interface %s from bridge " 8270 "%s: %s", 8271 ifname, brname, strerror(errno)); 8272 return -1; 8273 } 8274 } 8275 8276 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s", 8277 ifname, brname); 8278 if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) { 8279 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s " 8280 "into bridge %s: %s", 8281 ifname, brname, strerror(errno)); 8282 return -1; 8283 } 8284 bss->added_if_into_bridge = 1; 8285 8286 return 0; 8287} 8288 8289 8290static void *i802_init(struct hostapd_data *hapd, 8291 struct wpa_init_params *params) 8292{ 8293 struct wpa_driver_nl80211_data *drv; 8294 struct i802_bss *bss; 8295 size_t i; 8296 char brname[IFNAMSIZ]; 8297 int ifindex, br_ifindex; 8298 int br_added = 0; 8299 8300 bss = wpa_driver_nl80211_init(hapd, params->ifname, 8301 params->global_priv); 8302 if (bss == NULL) 8303 return NULL; 8304 8305 drv = bss->drv; 8306 drv->nlmode = NL80211_IFTYPE_AP; 8307 drv->eapol_sock = -1; 8308 8309 if (linux_br_get(brname, params->ifname) == 0) { 8310 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s", 8311 params->ifname, brname); 8312 br_ifindex = if_nametoindex(brname); 8313 } else { 8314 brname[0] = '\0'; 8315 br_ifindex = 0; 8316 } 8317 8318 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int); 8319 drv->if_indices = drv->default_if_indices; 8320 for (i = 0; i < params->num_bridge; i++) { 8321 if (params->bridge[i]) { 8322 ifindex = if_nametoindex(params->bridge[i]); 8323 if (ifindex) 8324 add_ifidx(drv, ifindex); 8325 if (ifindex == br_ifindex) 8326 br_added = 1; 8327 } 8328 } 8329 if (!br_added && br_ifindex && 8330 (params->num_bridge == 0 || !params->bridge[0])) 8331 add_ifidx(drv, br_ifindex); 8332 8333 /* start listening for EAPOL on the default AP interface */ 8334 add_ifidx(drv, drv->ifindex); 8335 8336 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0)) 8337 goto failed; 8338 8339 if (params->bssid) { 8340 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8341 params->bssid)) 8342 goto failed; 8343 } 8344 8345 if (wpa_driver_nl80211_set_mode(bss, drv->nlmode)) { 8346 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s " 8347 "into AP mode", bss->ifname); 8348 goto failed; 8349 } 8350 8351 if (params->num_bridge && params->bridge[0] && 8352 i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0) 8353 goto failed; 8354 8355 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) 8356 goto failed; 8357 8358 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE)); 8359 if (drv->eapol_sock < 0) { 8360 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)"); 8361 goto failed; 8362 } 8363 8364 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL)) 8365 { 8366 printf("Could not register read socket for eapol\n"); 8367 goto failed; 8368 } 8369 8370 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8371 params->own_addr)) 8372 goto failed; 8373 8374 memcpy(bss->addr, params->own_addr, ETH_ALEN); 8375 8376 return bss; 8377 8378failed: 8379 wpa_driver_nl80211_deinit(bss); 8380 return NULL; 8381} 8382 8383 8384static void i802_deinit(void *priv) 8385{ 8386 struct i802_bss *bss = priv; 8387 wpa_driver_nl80211_deinit(bss); 8388} 8389 8390#endif /* HOSTAPD */ 8391 8392 8393static enum nl80211_iftype wpa_driver_nl80211_if_type( 8394 enum wpa_driver_if_type type) 8395{ 8396 switch (type) { 8397 case WPA_IF_STATION: 8398 return NL80211_IFTYPE_STATION; 8399 case WPA_IF_P2P_CLIENT: 8400 case WPA_IF_P2P_GROUP: 8401 return NL80211_IFTYPE_P2P_CLIENT; 8402 case WPA_IF_AP_VLAN: 8403 return NL80211_IFTYPE_AP_VLAN; 8404 case WPA_IF_AP_BSS: 8405 return NL80211_IFTYPE_AP; 8406 case WPA_IF_P2P_GO: 8407 return NL80211_IFTYPE_P2P_GO; 8408 } 8409 return -1; 8410} 8411 8412 8413#ifdef CONFIG_P2P 8414 8415static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr) 8416{ 8417 struct wpa_driver_nl80211_data *drv; 8418 dl_list_for_each(drv, &global->interfaces, 8419 struct wpa_driver_nl80211_data, list) { 8420 if (os_memcmp(addr, drv->first_bss.addr, ETH_ALEN) == 0) 8421 return 1; 8422 } 8423 return 0; 8424} 8425 8426 8427static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv, 8428 u8 *new_addr) 8429{ 8430 unsigned int idx; 8431 8432 if (!drv->global) 8433 return -1; 8434 8435 os_memcpy(new_addr, drv->first_bss.addr, ETH_ALEN); 8436 for (idx = 0; idx < 64; idx++) { 8437 new_addr[0] = drv->first_bss.addr[0] | 0x02; 8438 new_addr[0] ^= idx << 2; 8439 if (!nl80211_addr_in_use(drv->global, new_addr)) 8440 break; 8441 } 8442 if (idx == 64) 8443 return -1; 8444 8445 wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address " 8446 MACSTR, MAC2STR(new_addr)); 8447 8448 return 0; 8449} 8450 8451#endif /* CONFIG_P2P */ 8452 8453 8454static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type, 8455 const char *ifname, const u8 *addr, 8456 void *bss_ctx, void **drv_priv, 8457 char *force_ifname, u8 *if_addr, 8458 const char *bridge) 8459{ 8460 struct i802_bss *bss = priv; 8461 struct wpa_driver_nl80211_data *drv = bss->drv; 8462 int ifidx; 8463#ifdef HOSTAPD 8464 struct i802_bss *new_bss = NULL; 8465 8466 if (type == WPA_IF_AP_BSS) { 8467 new_bss = os_zalloc(sizeof(*new_bss)); 8468 if (new_bss == NULL) 8469 return -1; 8470 } 8471#endif /* HOSTAPD */ 8472 8473 if (addr) 8474 os_memcpy(if_addr, addr, ETH_ALEN); 8475 ifidx = nl80211_create_iface(drv, ifname, 8476 wpa_driver_nl80211_if_type(type), addr, 8477 0); 8478 if (ifidx < 0) { 8479#ifdef HOSTAPD 8480 os_free(new_bss); 8481#endif /* HOSTAPD */ 8482 return -1; 8483 } 8484 8485 if (!addr && 8486 linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8487 if_addr) < 0) { 8488 nl80211_remove_iface(drv, ifidx); 8489 return -1; 8490 } 8491 8492#ifdef CONFIG_P2P 8493 if (!addr && 8494 (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP || 8495 type == WPA_IF_P2P_GO)) { 8496 /* Enforce unique P2P Interface Address */ 8497 u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN]; 8498 8499 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8500 own_addr) < 0 || 8501 linux_get_ifhwaddr(drv->global->ioctl_sock, ifname, 8502 new_addr) < 0) { 8503 nl80211_remove_iface(drv, ifidx); 8504 return -1; 8505 } 8506 if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) { 8507 wpa_printf(MSG_DEBUG, "nl80211: Allocate new address " 8508 "for P2P group interface"); 8509 if (nl80211_p2p_interface_addr(drv, new_addr) < 0) { 8510 nl80211_remove_iface(drv, ifidx); 8511 return -1; 8512 } 8513 if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, 8514 new_addr) < 0) { 8515 nl80211_remove_iface(drv, ifidx); 8516 return -1; 8517 } 8518 } 8519 os_memcpy(if_addr, new_addr, ETH_ALEN); 8520 } 8521#endif /* CONFIG_P2P */ 8522 8523#ifdef HOSTAPD 8524 if (bridge && 8525 i802_check_bridge(drv, new_bss, bridge, ifname) < 0) { 8526 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new " 8527 "interface %s to a bridge %s", ifname, bridge); 8528 nl80211_remove_iface(drv, ifidx); 8529 os_free(new_bss); 8530 return -1; 8531 } 8532 8533 if (type == WPA_IF_AP_BSS) { 8534 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1)) 8535 { 8536 nl80211_remove_iface(drv, ifidx); 8537 os_free(new_bss); 8538 return -1; 8539 } 8540 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ); 8541 os_memcpy(new_bss->addr, if_addr, ETH_ALEN); 8542 new_bss->ifindex = ifidx; 8543 new_bss->drv = drv; 8544 new_bss->next = drv->first_bss.next; 8545 new_bss->freq = drv->first_bss.freq; 8546 new_bss->ctx = bss_ctx; 8547 drv->first_bss.next = new_bss; 8548 if (drv_priv) 8549 *drv_priv = new_bss; 8550 nl80211_init_bss(new_bss); 8551 8552 /* Subscribe management frames for this WPA_IF_AP_BSS */ 8553 if (nl80211_setup_ap(new_bss)) 8554 return -1; 8555 } 8556#endif /* HOSTAPD */ 8557 8558 if (drv->global) 8559 drv->global->if_add_ifindex = ifidx; 8560 8561 return 0; 8562} 8563 8564 8565static int wpa_driver_nl80211_if_remove(struct i802_bss *bss, 8566 enum wpa_driver_if_type type, 8567 const char *ifname) 8568{ 8569 struct wpa_driver_nl80211_data *drv = bss->drv; 8570 int ifindex = if_nametoindex(ifname); 8571 8572 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d", 8573 __func__, type, ifname, ifindex); 8574 if (ifindex <= 0) 8575 return -1; 8576 8577 nl80211_remove_iface(drv, ifindex); 8578 8579#ifdef HOSTAPD 8580 if (type != WPA_IF_AP_BSS) 8581 return 0; 8582 8583 if (bss->added_if_into_bridge) { 8584 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 8585 bss->ifname) < 0) 8586 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 8587 "interface %s from bridge %s: %s", 8588 bss->ifname, bss->brname, strerror(errno)); 8589 } 8590 if (bss->added_bridge) { 8591 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 8592 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 8593 "bridge %s: %s", 8594 bss->brname, strerror(errno)); 8595 } 8596 8597 if (bss != &drv->first_bss) { 8598 struct i802_bss *tbss; 8599 8600 for (tbss = &drv->first_bss; tbss; tbss = tbss->next) { 8601 if (tbss->next == bss) { 8602 tbss->next = bss->next; 8603 /* Unsubscribe management frames */ 8604 nl80211_teardown_ap(bss); 8605 nl80211_destroy_bss(bss); 8606 os_free(bss); 8607 bss = NULL; 8608 break; 8609 } 8610 } 8611 if (bss) 8612 wpa_printf(MSG_INFO, "nl80211: %s - could not find " 8613 "BSS %p in the list", __func__, bss); 8614 } 8615#endif /* HOSTAPD */ 8616 8617 return 0; 8618} 8619 8620 8621static int cookie_handler(struct nl_msg *msg, void *arg) 8622{ 8623 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 8624 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 8625 u64 *cookie = arg; 8626 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 8627 genlmsg_attrlen(gnlh, 0), NULL); 8628 if (tb[NL80211_ATTR_COOKIE]) 8629 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 8630 return NL_SKIP; 8631} 8632 8633 8634static int nl80211_send_frame_cmd(struct i802_bss *bss, 8635 unsigned int freq, unsigned int wait, 8636 const u8 *buf, size_t buf_len, 8637 u64 *cookie_out, int no_cck, int no_ack, 8638 int offchanok) 8639{ 8640 struct wpa_driver_nl80211_data *drv = bss->drv; 8641 struct nl_msg *msg; 8642 u64 cookie; 8643 int ret = -1; 8644 8645 msg = nlmsg_alloc(); 8646 if (!msg) 8647 return -1; 8648 8649 wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d " 8650 "no_ack=%d offchanok=%d", 8651 freq, wait, no_cck, no_ack, offchanok); 8652 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME); 8653 8654 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8655 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 8656 if (wait) 8657 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait); 8658 if (offchanok && (drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX)) 8659 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK); 8660 if (no_cck) 8661 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 8662 if (no_ack) 8663 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK); 8664 8665 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf); 8666 8667 cookie = 0; 8668 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 8669 msg = NULL; 8670 if (ret) { 8671 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d " 8672 "(%s) (freq=%u wait=%u)", ret, strerror(-ret), 8673 freq, wait); 8674 goto nla_put_failure; 8675 } 8676 wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; " 8677 "cookie 0x%llx", no_ack ? " (no ACK)" : "", 8678 (long long unsigned int) cookie); 8679 8680 if (cookie_out) 8681 *cookie_out = no_ack ? (u64) -1 : cookie; 8682 8683nla_put_failure: 8684 nlmsg_free(msg); 8685 return ret; 8686} 8687 8688 8689static int wpa_driver_nl80211_send_action(struct i802_bss *bss, 8690 unsigned int freq, 8691 unsigned int wait_time, 8692 const u8 *dst, const u8 *src, 8693 const u8 *bssid, 8694 const u8 *data, size_t data_len, 8695 int no_cck) 8696{ 8697 struct wpa_driver_nl80211_data *drv = bss->drv; 8698 int ret = -1; 8699 u8 *buf; 8700 struct ieee80211_hdr *hdr; 8701 8702 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, " 8703 "freq=%u MHz wait=%d ms no_cck=%d)", 8704 drv->ifindex, freq, wait_time, no_cck); 8705 8706 buf = os_zalloc(24 + data_len); 8707 if (buf == NULL) 8708 return ret; 8709 os_memcpy(buf + 24, data, data_len); 8710 hdr = (struct ieee80211_hdr *) buf; 8711 hdr->frame_control = 8712 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION); 8713 os_memcpy(hdr->addr1, dst, ETH_ALEN); 8714 os_memcpy(hdr->addr2, src, ETH_ALEN); 8715 os_memcpy(hdr->addr3, bssid, ETH_ALEN); 8716 8717 if (is_ap_interface(drv->nlmode)) 8718 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len, 8719 0, freq, no_cck, 1, 8720 wait_time); 8721 else 8722 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf, 8723 24 + data_len, 8724 &drv->send_action_cookie, 8725 no_cck, 0, 1); 8726 8727 os_free(buf); 8728 return ret; 8729} 8730 8731 8732static void wpa_driver_nl80211_send_action_cancel_wait(void *priv) 8733{ 8734 struct i802_bss *bss = priv; 8735 struct wpa_driver_nl80211_data *drv = bss->drv; 8736 struct nl_msg *msg; 8737 int ret; 8738 8739 msg = nlmsg_alloc(); 8740 if (!msg) 8741 return; 8742 8743 wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx", 8744 (long long unsigned int) drv->send_action_cookie); 8745 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL); 8746 8747 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8748 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie); 8749 8750 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8751 msg = NULL; 8752 if (ret) 8753 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d " 8754 "(%s)", ret, strerror(-ret)); 8755 8756 nla_put_failure: 8757 nlmsg_free(msg); 8758} 8759 8760 8761static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq, 8762 unsigned int duration) 8763{ 8764 struct i802_bss *bss = priv; 8765 struct wpa_driver_nl80211_data *drv = bss->drv; 8766 struct nl_msg *msg; 8767 int ret; 8768 u64 cookie; 8769 8770 msg = nlmsg_alloc(); 8771 if (!msg) 8772 return -1; 8773 8774 nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL); 8775 8776 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8777 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 8778 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration); 8779 8780 cookie = 0; 8781 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 8782 msg = NULL; 8783 if (ret == 0) { 8784 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie " 8785 "0x%llx for freq=%u MHz duration=%u", 8786 (long long unsigned int) cookie, freq, duration); 8787 drv->remain_on_chan_cookie = cookie; 8788 drv->pending_remain_on_chan = 1; 8789 return 0; 8790 } 8791 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel " 8792 "(freq=%d duration=%u): %d (%s)", 8793 freq, duration, ret, strerror(-ret)); 8794nla_put_failure: 8795 nlmsg_free(msg); 8796 return -1; 8797} 8798 8799 8800static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv) 8801{ 8802 struct i802_bss *bss = priv; 8803 struct wpa_driver_nl80211_data *drv = bss->drv; 8804 struct nl_msg *msg; 8805 int ret; 8806 8807 if (!drv->pending_remain_on_chan) { 8808 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel " 8809 "to cancel"); 8810 return -1; 8811 } 8812 8813 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie " 8814 "0x%llx", 8815 (long long unsigned int) drv->remain_on_chan_cookie); 8816 8817 msg = nlmsg_alloc(); 8818 if (!msg) 8819 return -1; 8820 8821 nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL); 8822 8823 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8824 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie); 8825 8826 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8827 msg = NULL; 8828 if (ret == 0) 8829 return 0; 8830 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: " 8831 "%d (%s)", ret, strerror(-ret)); 8832nla_put_failure: 8833 nlmsg_free(msg); 8834 return -1; 8835} 8836 8837 8838static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report) 8839{ 8840 struct wpa_driver_nl80211_data *drv = bss->drv; 8841 8842 if (!report) { 8843 if (bss->nl_preq && drv->device_ap_sme && 8844 is_ap_interface(drv->nlmode)) { 8845 /* 8846 * Do not disable Probe Request reporting that was 8847 * enabled in nl80211_setup_ap(). 8848 */ 8849 wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of " 8850 "Probe Request reporting nl_preq=%p while " 8851 "in AP mode", bss->nl_preq); 8852 } else if (bss->nl_preq) { 8853 wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request " 8854 "reporting nl_preq=%p", bss->nl_preq); 8855 eloop_unregister_read_sock( 8856 nl_socket_get_fd(bss->nl_preq)); 8857 nl_destroy_handles(&bss->nl_preq); 8858 } 8859 return 0; 8860 } 8861 8862 if (bss->nl_preq) { 8863 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting " 8864 "already on! nl_preq=%p", bss->nl_preq); 8865 return 0; 8866 } 8867 8868 bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq"); 8869 if (bss->nl_preq == NULL) 8870 return -1; 8871 wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request " 8872 "reporting nl_preq=%p", bss->nl_preq); 8873 8874 if (nl80211_register_frame(bss, bss->nl_preq, 8875 (WLAN_FC_TYPE_MGMT << 2) | 8876 (WLAN_FC_STYPE_PROBE_REQ << 4), 8877 NULL, 0) < 0) 8878 goto out_err; 8879 8880 eloop_register_read_sock(nl_socket_get_fd(bss->nl_preq), 8881 wpa_driver_nl80211_event_receive, bss->nl_cb, 8882 bss->nl_preq); 8883 8884 return 0; 8885 8886 out_err: 8887 nl_destroy_handles(&bss->nl_preq); 8888 return -1; 8889} 8890 8891 8892static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 8893 int ifindex, int disabled) 8894{ 8895 struct nl_msg *msg; 8896 struct nlattr *bands, *band; 8897 int ret; 8898 8899 msg = nlmsg_alloc(); 8900 if (!msg) 8901 return -1; 8902 8903 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK); 8904 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 8905 8906 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES); 8907 if (!bands) 8908 goto nla_put_failure; 8909 8910 /* 8911 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything 8912 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS 8913 * rates. All 5 GHz rates are left enabled. 8914 */ 8915 band = nla_nest_start(msg, NL80211_BAND_2GHZ); 8916 if (!band) 8917 goto nla_put_failure; 8918 if (disabled) { 8919 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8, 8920 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 8921 } 8922 nla_nest_end(msg, band); 8923 8924 nla_nest_end(msg, bands); 8925 8926 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8927 msg = NULL; 8928 if (ret) { 8929 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d " 8930 "(%s)", ret, strerror(-ret)); 8931 } else 8932 drv->disabled_11b_rates = disabled; 8933 8934 return ret; 8935 8936nla_put_failure: 8937 nlmsg_free(msg); 8938 return -1; 8939} 8940 8941 8942static int wpa_driver_nl80211_deinit_ap(void *priv) 8943{ 8944 struct i802_bss *bss = priv; 8945 struct wpa_driver_nl80211_data *drv = bss->drv; 8946 if (!is_ap_interface(drv->nlmode)) 8947 return -1; 8948 wpa_driver_nl80211_del_beacon(drv); 8949 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 8950} 8951 8952 8953static int wpa_driver_nl80211_deinit_p2p_cli(void *priv) 8954{ 8955 struct i802_bss *bss = priv; 8956 struct wpa_driver_nl80211_data *drv = bss->drv; 8957 if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT) 8958 return -1; 8959 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 8960} 8961 8962 8963static void wpa_driver_nl80211_resume(void *priv) 8964{ 8965 struct i802_bss *bss = priv; 8966 struct wpa_driver_nl80211_data *drv = bss->drv; 8967 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { 8968 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on " 8969 "resume event"); 8970 } 8971} 8972 8973 8974static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap, 8975 const u8 *ies, size_t ies_len) 8976{ 8977 struct i802_bss *bss = priv; 8978 struct wpa_driver_nl80211_data *drv = bss->drv; 8979 int ret; 8980 u8 *data, *pos; 8981 size_t data_len; 8982 const u8 *own_addr = bss->addr; 8983 8984 if (action != 1) { 8985 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action " 8986 "action %d", action); 8987 return -1; 8988 } 8989 8990 /* 8991 * Action frame payload: 8992 * Category[1] = 6 (Fast BSS Transition) 8993 * Action[1] = 1 (Fast BSS Transition Request) 8994 * STA Address 8995 * Target AP Address 8996 * FT IEs 8997 */ 8998 8999 data_len = 2 + 2 * ETH_ALEN + ies_len; 9000 data = os_malloc(data_len); 9001 if (data == NULL) 9002 return -1; 9003 pos = data; 9004 *pos++ = 0x06; /* FT Action category */ 9005 *pos++ = action; 9006 os_memcpy(pos, own_addr, ETH_ALEN); 9007 pos += ETH_ALEN; 9008 os_memcpy(pos, target_ap, ETH_ALEN); 9009 pos += ETH_ALEN; 9010 os_memcpy(pos, ies, ies_len); 9011 9012 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0, 9013 drv->bssid, own_addr, drv->bssid, 9014 data, data_len, 0); 9015 os_free(data); 9016 9017 return ret; 9018} 9019 9020 9021static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis) 9022{ 9023 struct i802_bss *bss = priv; 9024 struct wpa_driver_nl80211_data *drv = bss->drv; 9025 struct nl_msg *msg; 9026 struct nlattr *cqm; 9027 int ret = -1; 9028 9029 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d " 9030 "hysteresis=%d", threshold, hysteresis); 9031 9032 msg = nlmsg_alloc(); 9033 if (!msg) 9034 return -1; 9035 9036 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM); 9037 9038 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9039 9040 cqm = nla_nest_start(msg, NL80211_ATTR_CQM); 9041 if (cqm == NULL) 9042 goto nla_put_failure; 9043 9044 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold); 9045 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis); 9046 nla_nest_end(msg, cqm); 9047 9048 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 9049 msg = NULL; 9050 9051nla_put_failure: 9052 nlmsg_free(msg); 9053 return ret; 9054} 9055 9056 9057static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si) 9058{ 9059 struct i802_bss *bss = priv; 9060 struct wpa_driver_nl80211_data *drv = bss->drv; 9061 int res; 9062 9063 os_memset(si, 0, sizeof(*si)); 9064 res = nl80211_get_link_signal(drv, si); 9065 if (res != 0) 9066 return res; 9067 9068 return nl80211_get_link_noise(drv, si); 9069} 9070 9071 9072static int wpa_driver_nl80211_shared_freq(void *priv) 9073{ 9074 struct i802_bss *bss = priv; 9075 struct wpa_driver_nl80211_data *drv = bss->drv; 9076 struct wpa_driver_nl80211_data *driver; 9077 int freq = 0; 9078 9079 /* 9080 * If the same PHY is in connected state with some other interface, 9081 * then retrieve the assoc freq. 9082 */ 9083 wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s", 9084 drv->phyname); 9085 9086 dl_list_for_each(driver, &drv->global->interfaces, 9087 struct wpa_driver_nl80211_data, list) { 9088 if (drv == driver || 9089 os_strcmp(drv->phyname, driver->phyname) != 0 || 9090#ifdef ANDROID_P2P 9091 (!driver->associated && !is_ap_interface(driver->nlmode))) 9092#else 9093 !driver->associated) 9094#endif 9095 continue; 9096 9097 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s " 9098 MACSTR, 9099 driver->phyname, driver->first_bss.ifname, 9100 MAC2STR(driver->first_bss.addr)); 9101 if (is_ap_interface(driver->nlmode)) 9102 freq = driver->first_bss.freq; 9103 else 9104 freq = nl80211_get_assoc_freq(driver); 9105 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d", 9106 drv->phyname, freq); 9107 } 9108 9109 if (!freq) 9110 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for " 9111 "PHY (%s) in associated state", drv->phyname); 9112 9113 return freq; 9114} 9115 9116 9117static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len, 9118 int encrypt) 9119{ 9120 struct i802_bss *bss = priv; 9121 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0, 9122 0, 0, 0, 0); 9123} 9124 9125 9126static int nl80211_set_param(void *priv, const char *param) 9127{ 9128 wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param); 9129 if (param == NULL) 9130 return 0; 9131 9132#ifdef CONFIG_P2P 9133 if (os_strstr(param, "use_p2p_group_interface=1")) { 9134 struct i802_bss *bss = priv; 9135 struct wpa_driver_nl80211_data *drv = bss->drv; 9136 9137 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 9138 "interface"); 9139 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 9140 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 9141 } 9142#ifdef ANDROID_P2P 9143 if(os_strstr(param, "use_multi_chan_concurrent=1")) { 9144 struct i802_bss *bss = priv; 9145 struct wpa_driver_nl80211_data *drv = bss->drv; 9146 wpa_printf(MSG_DEBUG, "nl80211: Use Multi channel " 9147 "concurrency"); 9148 drv->capa.flags |= WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT; 9149 } 9150#endif 9151#endif /* CONFIG_P2P */ 9152 9153 return 0; 9154} 9155 9156 9157static void * nl80211_global_init(void) 9158{ 9159 struct nl80211_global *global; 9160 struct netlink_config *cfg; 9161 9162 global = os_zalloc(sizeof(*global)); 9163 if (global == NULL) 9164 return NULL; 9165 global->ioctl_sock = -1; 9166 dl_list_init(&global->interfaces); 9167 global->if_add_ifindex = -1; 9168 9169 cfg = os_zalloc(sizeof(*cfg)); 9170 if (cfg == NULL) 9171 goto err; 9172 9173 cfg->ctx = global; 9174 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink; 9175 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink; 9176 global->netlink = netlink_init(cfg); 9177 if (global->netlink == NULL) { 9178 os_free(cfg); 9179 goto err; 9180 } 9181 9182 if (wpa_driver_nl80211_init_nl_global(global) < 0) 9183 goto err; 9184 9185 global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0); 9186 if (global->ioctl_sock < 0) { 9187 perror("socket(PF_INET,SOCK_DGRAM)"); 9188 goto err; 9189 } 9190 9191 return global; 9192 9193err: 9194 nl80211_global_deinit(global); 9195 return NULL; 9196} 9197 9198 9199static void nl80211_global_deinit(void *priv) 9200{ 9201 struct nl80211_global *global = priv; 9202 if (global == NULL) 9203 return; 9204 if (!dl_list_empty(&global->interfaces)) { 9205 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at " 9206 "nl80211_global_deinit", 9207 dl_list_len(&global->interfaces)); 9208 } 9209 9210 if (global->netlink) 9211 netlink_deinit(global->netlink); 9212 9213 nl_destroy_handles(&global->nl); 9214 9215 if (global->nl_event) { 9216 eloop_unregister_read_sock( 9217 nl_socket_get_fd(global->nl_event)); 9218 nl_destroy_handles(&global->nl_event); 9219 } 9220 9221 nl_cb_put(global->nl_cb); 9222 9223 if (global->ioctl_sock >= 0) 9224 close(global->ioctl_sock); 9225 9226 os_free(global); 9227} 9228 9229 9230static const char * nl80211_get_radio_name(void *priv) 9231{ 9232 struct i802_bss *bss = priv; 9233 struct wpa_driver_nl80211_data *drv = bss->drv; 9234 return drv->phyname; 9235} 9236 9237 9238static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid, 9239 const u8 *pmkid) 9240{ 9241 struct nl_msg *msg; 9242 9243 msg = nlmsg_alloc(); 9244 if (!msg) 9245 return -ENOMEM; 9246 9247 nl80211_cmd(bss->drv, msg, 0, cmd); 9248 9249 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 9250 if (pmkid) 9251 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid); 9252 if (bssid) 9253 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); 9254 9255 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 9256 nla_put_failure: 9257 nlmsg_free(msg); 9258 return -ENOBUFS; 9259} 9260 9261 9262static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 9263{ 9264 struct i802_bss *bss = priv; 9265 wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid)); 9266 return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid); 9267} 9268 9269 9270static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 9271{ 9272 struct i802_bss *bss = priv; 9273 wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR, 9274 MAC2STR(bssid)); 9275 return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid); 9276} 9277 9278 9279static int nl80211_flush_pmkid(void *priv) 9280{ 9281 struct i802_bss *bss = priv; 9282 wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs"); 9283 return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL); 9284} 9285 9286 9287static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck, 9288 const u8 *replay_ctr) 9289{ 9290 struct i802_bss *bss = priv; 9291 struct wpa_driver_nl80211_data *drv = bss->drv; 9292 struct nlattr *replay_nested; 9293 struct nl_msg *msg; 9294 9295 msg = nlmsg_alloc(); 9296 if (!msg) 9297 return; 9298 9299 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 9300 9301 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9302 9303 replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 9304 if (!replay_nested) 9305 goto nla_put_failure; 9306 9307 NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek); 9308 NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck); 9309 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN, 9310 replay_ctr); 9311 9312 nla_nest_end(msg, replay_nested); 9313 9314 send_and_recv_msgs(drv, msg, NULL, NULL); 9315 return; 9316 nla_put_failure: 9317 nlmsg_free(msg); 9318} 9319 9320 9321static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr, 9322 const u8 *addr, int qos) 9323{ 9324 /* send data frame to poll STA and check whether 9325 * this frame is ACKed */ 9326 struct { 9327 struct ieee80211_hdr hdr; 9328 u16 qos_ctl; 9329 } STRUCT_PACKED nulldata; 9330 size_t size; 9331 9332 /* Send data frame to poll STA and check whether this frame is ACKed */ 9333 9334 os_memset(&nulldata, 0, sizeof(nulldata)); 9335 9336 if (qos) { 9337 nulldata.hdr.frame_control = 9338 IEEE80211_FC(WLAN_FC_TYPE_DATA, 9339 WLAN_FC_STYPE_QOS_NULL); 9340 size = sizeof(nulldata); 9341 } else { 9342 nulldata.hdr.frame_control = 9343 IEEE80211_FC(WLAN_FC_TYPE_DATA, 9344 WLAN_FC_STYPE_NULLFUNC); 9345 size = sizeof(struct ieee80211_hdr); 9346 } 9347 9348 nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS); 9349 os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN); 9350 os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 9351 os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 9352 9353 if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0, 9354 0, 0) < 0) 9355 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to " 9356 "send poll frame"); 9357} 9358 9359static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr, 9360 int qos) 9361{ 9362 struct i802_bss *bss = priv; 9363 struct wpa_driver_nl80211_data *drv = bss->drv; 9364 struct nl_msg *msg; 9365 9366 if (!drv->poll_command_supported) { 9367 nl80211_send_null_frame(bss, own_addr, addr, qos); 9368 return; 9369 } 9370 9371 msg = nlmsg_alloc(); 9372 if (!msg) 9373 return; 9374 9375 nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT); 9376 9377 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9378 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 9379 9380 send_and_recv_msgs(drv, msg, NULL, NULL); 9381 return; 9382 nla_put_failure: 9383 nlmsg_free(msg); 9384} 9385 9386 9387static int nl80211_set_power_save(struct i802_bss *bss, int enabled) 9388{ 9389 struct nl_msg *msg; 9390 9391 msg = nlmsg_alloc(); 9392 if (!msg) 9393 return -ENOMEM; 9394 9395 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE); 9396 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9397 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, 9398 enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED); 9399 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 9400nla_put_failure: 9401 nlmsg_free(msg); 9402 return -ENOBUFS; 9403} 9404 9405 9406static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps, 9407 int ctwindow) 9408{ 9409 struct i802_bss *bss = priv; 9410 9411 wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d " 9412 "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow); 9413 9414 if (opp_ps != -1 || ctwindow != -1) 9415#ifdef ANDROID_P2P 9416 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow); 9417#else 9418 return -1; /* Not yet supported */ 9419#endif 9420 9421 if (legacy_ps == -1) 9422 return 0; 9423 if (legacy_ps != 0 && legacy_ps != 1) 9424 return -1; /* Not yet supported */ 9425 9426 return nl80211_set_power_save(bss, legacy_ps); 9427} 9428 9429 9430#ifdef CONFIG_TDLS 9431 9432static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code, 9433 u8 dialog_token, u16 status_code, 9434 const u8 *buf, size_t len) 9435{ 9436 struct i802_bss *bss = priv; 9437 struct wpa_driver_nl80211_data *drv = bss->drv; 9438 struct nl_msg *msg; 9439 9440 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 9441 return -EOPNOTSUPP; 9442 9443 if (!dst) 9444 return -EINVAL; 9445 9446 msg = nlmsg_alloc(); 9447 if (!msg) 9448 return -ENOMEM; 9449 9450 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT); 9451 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 9452 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst); 9453 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code); 9454 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token); 9455 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code); 9456 NLA_PUT(msg, NL80211_ATTR_IE, len, buf); 9457 9458 return send_and_recv_msgs(drv, msg, NULL, NULL); 9459 9460nla_put_failure: 9461 nlmsg_free(msg); 9462 return -ENOBUFS; 9463} 9464 9465 9466static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer) 9467{ 9468 struct i802_bss *bss = priv; 9469 struct wpa_driver_nl80211_data *drv = bss->drv; 9470 struct nl_msg *msg; 9471 enum nl80211_tdls_operation nl80211_oper; 9472 9473 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 9474 return -EOPNOTSUPP; 9475 9476 switch (oper) { 9477 case TDLS_DISCOVERY_REQ: 9478 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ; 9479 break; 9480 case TDLS_SETUP: 9481 nl80211_oper = NL80211_TDLS_SETUP; 9482 break; 9483 case TDLS_TEARDOWN: 9484 nl80211_oper = NL80211_TDLS_TEARDOWN; 9485 break; 9486 case TDLS_ENABLE_LINK: 9487 nl80211_oper = NL80211_TDLS_ENABLE_LINK; 9488 break; 9489 case TDLS_DISABLE_LINK: 9490 nl80211_oper = NL80211_TDLS_DISABLE_LINK; 9491 break; 9492 case TDLS_ENABLE: 9493 return 0; 9494 case TDLS_DISABLE: 9495 return 0; 9496 default: 9497 return -EINVAL; 9498 } 9499 9500 msg = nlmsg_alloc(); 9501 if (!msg) 9502 return -ENOMEM; 9503 9504 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER); 9505 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper); 9506 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 9507 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer); 9508 9509 return send_and_recv_msgs(drv, msg, NULL, NULL); 9510 9511nla_put_failure: 9512 nlmsg_free(msg); 9513 return -ENOBUFS; 9514} 9515 9516#endif /* CONFIG TDLS */ 9517 9518 9519#ifdef ANDROID 9520 9521typedef struct android_wifi_priv_cmd { 9522 char *buf; 9523 int used_len; 9524 int total_len; 9525} android_wifi_priv_cmd; 9526 9527static int drv_errors = 0; 9528 9529static void wpa_driver_send_hang_msg(struct wpa_driver_nl80211_data *drv) 9530{ 9531 drv_errors++; 9532 if (drv_errors > DRV_NUMBER_SEQUENTIAL_ERRORS) { 9533 drv_errors = 0; 9534 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED"); 9535 } 9536} 9537 9538 9539static int android_priv_cmd(struct i802_bss *bss, const char *cmd) 9540{ 9541 struct wpa_driver_nl80211_data *drv = bss->drv; 9542 struct ifreq ifr; 9543 android_wifi_priv_cmd priv_cmd; 9544 char buf[MAX_DRV_CMD_SIZE]; 9545 int ret; 9546 9547 os_memset(&ifr, 0, sizeof(ifr)); 9548 os_memset(&priv_cmd, 0, sizeof(priv_cmd)); 9549 os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 9550 9551 os_memset(buf, 0, sizeof(buf)); 9552 os_strlcpy(buf, cmd, sizeof(buf)); 9553 9554 priv_cmd.buf = buf; 9555 priv_cmd.used_len = sizeof(buf); 9556 priv_cmd.total_len = sizeof(buf); 9557 ifr.ifr_data = &priv_cmd; 9558 9559 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 9560 if (ret < 0) { 9561 wpa_printf(MSG_ERROR, "%s: failed to issue private commands", 9562 __func__); 9563 wpa_driver_send_hang_msg(drv); 9564 return ret; 9565 } 9566 9567 drv_errors = 0; 9568 return 0; 9569} 9570 9571 9572static int android_pno_start(struct i802_bss *bss, 9573 struct wpa_driver_scan_params *params) 9574{ 9575 struct wpa_driver_nl80211_data *drv = bss->drv; 9576 struct ifreq ifr; 9577 android_wifi_priv_cmd priv_cmd; 9578 int ret = 0, i = 0, bp; 9579 char buf[WEXT_PNO_MAX_COMMAND_SIZE]; 9580 9581 bp = WEXT_PNOSETUP_HEADER_SIZE; 9582 os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp); 9583 buf[bp++] = WEXT_PNO_TLV_PREFIX; 9584 buf[bp++] = WEXT_PNO_TLV_VERSION; 9585 buf[bp++] = WEXT_PNO_TLV_SUBVERSION; 9586 buf[bp++] = WEXT_PNO_TLV_RESERVED; 9587 9588 while (i < WEXT_PNO_AMOUNT && (size_t) i < params->num_ssids) { 9589 /* Check that there is enough space needed for 1 more SSID, the 9590 * other sections and null termination */ 9591 if ((bp + WEXT_PNO_SSID_HEADER_SIZE + MAX_SSID_LEN + 9592 WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int) sizeof(buf)) 9593 break; 9594 wpa_hexdump_ascii(MSG_DEBUG, "For PNO Scan", 9595 params->ssids[i].ssid, 9596 params->ssids[i].ssid_len); 9597 buf[bp++] = WEXT_PNO_SSID_SECTION; 9598 buf[bp++] = params->ssids[i].ssid_len; 9599 os_memcpy(&buf[bp], params->ssids[i].ssid, 9600 params->ssids[i].ssid_len); 9601 bp += params->ssids[i].ssid_len; 9602 i++; 9603 } 9604 9605 buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION; 9606 os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x", 9607 WEXT_PNO_SCAN_INTERVAL); 9608 bp += WEXT_PNO_SCAN_INTERVAL_LENGTH; 9609 9610 buf[bp++] = WEXT_PNO_REPEAT_SECTION; 9611 os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x", 9612 WEXT_PNO_REPEAT); 9613 bp += WEXT_PNO_REPEAT_LENGTH; 9614 9615 buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION; 9616 os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x", 9617 WEXT_PNO_MAX_REPEAT); 9618 bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1; 9619 9620 memset(&ifr, 0, sizeof(ifr)); 9621 memset(&priv_cmd, 0, sizeof(priv_cmd)); 9622 os_strncpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 9623 9624 priv_cmd.buf = buf; 9625 priv_cmd.used_len = bp; 9626 priv_cmd.total_len = bp; 9627 ifr.ifr_data = &priv_cmd; 9628 9629 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 9630 9631 if (ret < 0) { 9632 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d", 9633 ret); 9634 wpa_driver_send_hang_msg(drv); 9635 return ret; 9636 } 9637 9638 drv_errors = 0; 9639 9640 return android_priv_cmd(bss, "PNOFORCE 1"); 9641} 9642 9643 9644static int android_pno_stop(struct i802_bss *bss) 9645{ 9646 return android_priv_cmd(bss, "PNOFORCE 0"); 9647} 9648 9649#endif /* ANDROID */ 9650 9651 9652static int driver_nl80211_set_key(const char *ifname, void *priv, 9653 enum wpa_alg alg, const u8 *addr, 9654 int key_idx, int set_tx, 9655 const u8 *seq, size_t seq_len, 9656 const u8 *key, size_t key_len) 9657{ 9658 struct i802_bss *bss = priv; 9659 return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx, 9660 set_tx, seq, seq_len, key, key_len); 9661} 9662 9663 9664static int driver_nl80211_scan2(void *priv, 9665 struct wpa_driver_scan_params *params) 9666{ 9667 struct i802_bss *bss = priv; 9668 return wpa_driver_nl80211_scan(bss, params); 9669} 9670 9671 9672static int driver_nl80211_deauthenticate(void *priv, const u8 *addr, 9673 int reason_code) 9674{ 9675 struct i802_bss *bss = priv; 9676 return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code); 9677} 9678 9679 9680static int driver_nl80211_authenticate(void *priv, 9681 struct wpa_driver_auth_params *params) 9682{ 9683 struct i802_bss *bss = priv; 9684 return wpa_driver_nl80211_authenticate(bss, params); 9685} 9686 9687 9688static void driver_nl80211_deinit(void *priv) 9689{ 9690 struct i802_bss *bss = priv; 9691 wpa_driver_nl80211_deinit(bss); 9692} 9693 9694 9695static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type, 9696 const char *ifname) 9697{ 9698 struct i802_bss *bss = priv; 9699 return wpa_driver_nl80211_if_remove(bss, type, ifname); 9700} 9701 9702 9703static int driver_nl80211_send_mlme(void *priv, const u8 *data, 9704 size_t data_len, int noack) 9705{ 9706 struct i802_bss *bss = priv; 9707 return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack, 9708 0, 0, 0, 0); 9709} 9710 9711 9712static int driver_nl80211_sta_remove(void *priv, const u8 *addr) 9713{ 9714 struct i802_bss *bss = priv; 9715 return wpa_driver_nl80211_sta_remove(bss, addr); 9716} 9717 9718 9719#if defined(HOSTAPD) || defined(CONFIG_AP) 9720static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr, 9721 const char *ifname, int vlan_id) 9722{ 9723 struct i802_bss *bss = priv; 9724 return i802_set_sta_vlan(bss, addr, ifname, vlan_id); 9725} 9726#endif /* HOSTAPD || CONFIG_AP */ 9727 9728 9729static int driver_nl80211_read_sta_data(void *priv, 9730 struct hostap_sta_driver_data *data, 9731 const u8 *addr) 9732{ 9733 struct i802_bss *bss = priv; 9734 return i802_read_sta_data(bss, data, addr); 9735} 9736 9737 9738static int driver_nl80211_send_action(void *priv, unsigned int freq, 9739 unsigned int wait_time, 9740 const u8 *dst, const u8 *src, 9741 const u8 *bssid, 9742 const u8 *data, size_t data_len, 9743 int no_cck) 9744{ 9745 struct i802_bss *bss = priv; 9746 return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src, 9747 bssid, data, data_len, no_cck); 9748} 9749 9750 9751static int driver_nl80211_probe_req_report(void *priv, int report) 9752{ 9753 struct i802_bss *bss = priv; 9754 return wpa_driver_nl80211_probe_req_report(bss, report); 9755} 9756 9757 9758static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md, 9759 const u8 *ies, size_t ies_len) 9760{ 9761 int ret; 9762 struct nl_msg *msg; 9763 struct i802_bss *bss = priv; 9764 struct wpa_driver_nl80211_data *drv = bss->drv; 9765 u16 mdid = WPA_GET_LE16(md); 9766 9767 msg = nlmsg_alloc(); 9768 if (!msg) 9769 return -ENOMEM; 9770 9771 wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs"); 9772 nl80211_cmd(drv, msg, 0, NL80211_CMD_UPDATE_FT_IES); 9773 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 9774 NLA_PUT(msg, NL80211_ATTR_IE, ies_len, ies); 9775 NLA_PUT_U16(msg, NL80211_ATTR_MDID, mdid); 9776 9777 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 9778 if (ret) { 9779 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed " 9780 "err=%d (%s)", ret, strerror(-ret)); 9781 } 9782 9783 return ret; 9784 9785nla_put_failure: 9786 nlmsg_free(msg); 9787 return -ENOBUFS; 9788} 9789 9790 9791const struct wpa_driver_ops wpa_driver_nl80211_ops = { 9792 .name = "nl80211", 9793 .desc = "Linux nl80211/cfg80211", 9794 .get_bssid = wpa_driver_nl80211_get_bssid, 9795 .get_ssid = wpa_driver_nl80211_get_ssid, 9796 .set_key = driver_nl80211_set_key, 9797 .scan2 = driver_nl80211_scan2, 9798 .sched_scan = wpa_driver_nl80211_sched_scan, 9799 .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan, 9800 .get_scan_results2 = wpa_driver_nl80211_get_scan_results, 9801 .deauthenticate = driver_nl80211_deauthenticate, 9802 .authenticate = driver_nl80211_authenticate, 9803 .associate = wpa_driver_nl80211_associate, 9804 .global_init = nl80211_global_init, 9805 .global_deinit = nl80211_global_deinit, 9806 .init2 = wpa_driver_nl80211_init, 9807 .deinit = driver_nl80211_deinit, 9808 .get_capa = wpa_driver_nl80211_get_capa, 9809 .set_operstate = wpa_driver_nl80211_set_operstate, 9810 .set_supp_port = wpa_driver_nl80211_set_supp_port, 9811 .set_country = wpa_driver_nl80211_set_country, 9812 .set_ap = wpa_driver_nl80211_set_ap, 9813 .if_add = wpa_driver_nl80211_if_add, 9814 .if_remove = driver_nl80211_if_remove, 9815 .send_mlme = driver_nl80211_send_mlme, 9816 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data, 9817 .sta_add = wpa_driver_nl80211_sta_add, 9818 .sta_remove = driver_nl80211_sta_remove, 9819 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol, 9820 .sta_set_flags = wpa_driver_nl80211_sta_set_flags, 9821#ifdef HOSTAPD 9822 .hapd_init = i802_init, 9823 .hapd_deinit = i802_deinit, 9824 .set_wds_sta = i802_set_wds_sta, 9825#endif /* HOSTAPD */ 9826#if defined(HOSTAPD) || defined(CONFIG_AP) 9827 .get_seqnum = i802_get_seqnum, 9828 .flush = i802_flush, 9829 .get_inact_sec = i802_get_inact_sec, 9830 .sta_clear_stats = i802_sta_clear_stats, 9831 .set_rts = i802_set_rts, 9832 .set_frag = i802_set_frag, 9833 .set_tx_queue_params = i802_set_tx_queue_params, 9834 .set_sta_vlan = driver_nl80211_set_sta_vlan, 9835 .sta_deauth = i802_sta_deauth, 9836 .sta_disassoc = i802_sta_disassoc, 9837#endif /* HOSTAPD || CONFIG_AP */ 9838 .read_sta_data = driver_nl80211_read_sta_data, 9839 .set_freq = i802_set_freq, 9840 .send_action = driver_nl80211_send_action, 9841 .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait, 9842 .remain_on_channel = wpa_driver_nl80211_remain_on_channel, 9843 .cancel_remain_on_channel = 9844 wpa_driver_nl80211_cancel_remain_on_channel, 9845 .probe_req_report = driver_nl80211_probe_req_report, 9846 .deinit_ap = wpa_driver_nl80211_deinit_ap, 9847 .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli, 9848 .resume = wpa_driver_nl80211_resume, 9849 .send_ft_action = nl80211_send_ft_action, 9850 .signal_monitor = nl80211_signal_monitor, 9851 .signal_poll = nl80211_signal_poll, 9852 .send_frame = nl80211_send_frame, 9853 .shared_freq = wpa_driver_nl80211_shared_freq, 9854 .set_param = nl80211_set_param, 9855 .get_radio_name = nl80211_get_radio_name, 9856 .add_pmkid = nl80211_add_pmkid, 9857 .remove_pmkid = nl80211_remove_pmkid, 9858 .flush_pmkid = nl80211_flush_pmkid, 9859 .set_rekey_info = nl80211_set_rekey_info, 9860 .poll_client = nl80211_poll_client, 9861 .set_p2p_powersave = nl80211_set_p2p_powersave, 9862#ifdef CONFIG_TDLS 9863 .send_tdls_mgmt = nl80211_send_tdls_mgmt, 9864 .tdls_oper = nl80211_tdls_oper, 9865#endif /* CONFIG_TDLS */ 9866 .update_ft_ies = wpa_driver_nl80211_update_ft_ies, 9867#ifdef ANDROID_P2P 9868 .set_noa = wpa_driver_set_p2p_noa, 9869 .get_noa = wpa_driver_get_p2p_noa, 9870 .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie, 9871#endif 9872#ifdef ANDROID 9873 .driver_cmd = wpa_driver_nl80211_driver_cmd, 9874#endif 9875}; 9876