driver_nl80211.c revision ad266fb3da6083126e7619e525153839b918aa44
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); 181static void wpa_driver_nl80211_deinit(void *priv); 182 183struct i802_bss { 184 struct wpa_driver_nl80211_data *drv; 185 struct i802_bss *next; 186 int ifindex; 187 char ifname[IFNAMSIZ + 1]; 188 char brname[IFNAMSIZ]; 189 unsigned int beacon_set:1; 190 unsigned int added_if_into_bridge:1; 191 unsigned int added_bridge:1; 192 unsigned int in_deinit:1; 193 194 u8 addr[ETH_ALEN]; 195 196 int freq; 197 198 struct nl_handle *nl_preq, *nl_mgmt; 199 struct nl_cb *nl_cb; 200 201 struct nl80211_wiphy_data *wiphy_data; 202 struct dl_list wiphy_list; 203}; 204 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 int has_capability; 218 219 int operstate; 220 221 int scan_complete_events; 222 223 struct nl_cb *nl_cb; 224 225 u8 auth_bssid[ETH_ALEN]; 226 u8 bssid[ETH_ALEN]; 227 int associated; 228 u8 ssid[32]; 229 size_t ssid_len; 230 enum nl80211_iftype nlmode; 231 enum nl80211_iftype ap_scan_as_station; 232 unsigned int assoc_freq; 233 234 int monitor_sock; 235 int monitor_ifidx; 236 int monitor_refcount; 237 238 unsigned int disabled_11b_rates:1; 239 unsigned int pending_remain_on_chan:1; 240 unsigned int in_interface_list:1; 241 unsigned int device_ap_sme:1; 242 unsigned int poll_command_supported:1; 243 unsigned int data_tx_status:1; 244 unsigned int scan_for_auth:1; 245 unsigned int retry_auth:1; 246 unsigned int use_monitor:1; 247 248 u64 remain_on_chan_cookie; 249 u64 send_action_cookie; 250 251 unsigned int last_mgmt_freq; 252 253 struct wpa_driver_scan_filter *filter_ssids; 254 size_t num_filter_ssids; 255 256 struct i802_bss first_bss; 257 258 int eapol_tx_sock; 259 260#ifdef HOSTAPD 261 int eapol_sock; /* socket for EAPOL frames */ 262 263 int default_if_indices[16]; 264 int *if_indices; 265 int num_if_indices; 266 267 int last_freq; 268 int last_freq_ht; 269#endif /* HOSTAPD */ 270 271 /* From failed authentication command */ 272 int auth_freq; 273 u8 auth_bssid_[ETH_ALEN]; 274 u8 auth_ssid[32]; 275 size_t auth_ssid_len; 276 int auth_alg; 277 u8 *auth_ie; 278 size_t auth_ie_len; 279 u8 auth_wep_key[4][16]; 280 size_t auth_wep_key_len[4]; 281 int auth_wep_tx_keyidx; 282 int auth_local_state_change; 283 int auth_p2p; 284}; 285 286 287static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, 288 void *timeout_ctx); 289static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, 290 enum nl80211_iftype nlmode); 291static int 292wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv); 293static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 294 const u8 *addr, int cmd, u16 reason_code, 295 int local_state_change); 296static void nl80211_remove_monitor_interface( 297 struct wpa_driver_nl80211_data *drv); 298static int nl80211_send_frame_cmd(struct i802_bss *bss, 299 unsigned int freq, unsigned int wait, 300 const u8 *buf, size_t buf_len, u64 *cookie, 301 int no_cck, int no_ack, int offchanok); 302static int wpa_driver_nl80211_probe_req_report(void *priv, int report); 303#ifdef ANDROID 304static int android_pno_start(struct i802_bss *bss, 305 struct wpa_driver_scan_params *params); 306static int android_pno_stop(struct i802_bss *bss); 307#endif /* ANDROID */ 308#ifdef ANDROID_P2P 309int wpa_driver_set_p2p_noa(void *priv, u8 count, int start, int duration); 310int wpa_driver_get_p2p_noa(void *priv, u8 *buf, size_t len); 311int wpa_driver_set_p2p_ps(void *priv, int legacy_ps, int opp_ps, int ctwindow); 312int wpa_driver_set_ap_wps_p2p_ie(void *priv, const struct wpabuf *beacon, 313 const struct wpabuf *proberesp, 314 const struct wpabuf *assocresp); 315 316#endif 317#ifdef HOSTAPD 318static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 319static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 320static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 321static int wpa_driver_nl80211_if_remove(void *priv, 322 enum wpa_driver_if_type type, 323 const char *ifname); 324#else /* HOSTAPD */ 325static inline void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 326{ 327} 328 329static inline void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 330{ 331} 332 333static inline int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 334{ 335 return 0; 336} 337#endif /* HOSTAPD */ 338#ifdef ANDROID 339extern int wpa_driver_nl80211_driver_cmd(void *priv, char *cmd, char *buf, 340 size_t buf_len); 341#endif 342 343static int i802_set_freq(void *priv, struct hostapd_freq_params *freq); 344static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 345 int ifindex, int disabled); 346 347static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv); 348static int wpa_driver_nl80211_authenticate_retry( 349 struct wpa_driver_nl80211_data *drv); 350 351 352static int is_ap_interface(enum nl80211_iftype nlmode) 353{ 354 return (nlmode == NL80211_IFTYPE_AP || 355 nlmode == NL80211_IFTYPE_P2P_GO); 356} 357 358 359static int is_sta_interface(enum nl80211_iftype nlmode) 360{ 361 return (nlmode == NL80211_IFTYPE_STATION || 362 nlmode == NL80211_IFTYPE_P2P_CLIENT); 363} 364 365 366static int is_p2p_interface(enum nl80211_iftype nlmode) 367{ 368 return (nlmode == NL80211_IFTYPE_P2P_CLIENT || 369 nlmode == NL80211_IFTYPE_P2P_GO); 370} 371 372 373struct nl80211_bss_info_arg { 374 struct wpa_driver_nl80211_data *drv; 375 struct wpa_scan_results *res; 376 unsigned int assoc_freq; 377 u8 assoc_bssid[ETH_ALEN]; 378}; 379 380static int bss_info_handler(struct nl_msg *msg, void *arg); 381 382 383/* nl80211 code */ 384static int ack_handler(struct nl_msg *msg, void *arg) 385{ 386 int *err = arg; 387 *err = 0; 388 return NL_STOP; 389} 390 391static int finish_handler(struct nl_msg *msg, void *arg) 392{ 393 int *ret = arg; 394 *ret = 0; 395 return NL_SKIP; 396} 397 398static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, 399 void *arg) 400{ 401 int *ret = arg; 402 *ret = err->error; 403 return NL_SKIP; 404} 405 406 407static int no_seq_check(struct nl_msg *msg, void *arg) 408{ 409 return NL_OK; 410} 411 412 413static int send_and_recv(struct nl80211_global *global, 414 struct nl_handle *nl_handle, struct nl_msg *msg, 415 int (*valid_handler)(struct nl_msg *, void *), 416 void *valid_data) 417{ 418 struct nl_cb *cb; 419 int err = -ENOMEM; 420 421 cb = nl_cb_clone(global->nl_cb); 422 if (!cb) 423 goto out; 424 425 err = nl_send_auto_complete(nl_handle, msg); 426 if (err < 0) 427 goto out; 428 429 err = 1; 430 431 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err); 432 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err); 433 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err); 434 435 if (valid_handler) 436 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, 437 valid_handler, valid_data); 438 439 while (err > 0) 440 nl_recvmsgs(nl_handle, cb); 441 out: 442 nl_cb_put(cb); 443 nlmsg_free(msg); 444 return err; 445} 446 447 448static int send_and_recv_msgs_global(struct nl80211_global *global, 449 struct nl_msg *msg, 450 int (*valid_handler)(struct nl_msg *, void *), 451 void *valid_data) 452{ 453 return send_and_recv(global, global->nl, msg, valid_handler, 454 valid_data); 455} 456 457 458#ifndef ANDROID 459static 460#endif 461int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv, 462 struct nl_msg *msg, 463 int (*valid_handler)(struct nl_msg *, void *), 464 void *valid_data) 465{ 466 return send_and_recv(drv->global, drv->global->nl, msg, 467 valid_handler, valid_data); 468} 469 470 471struct family_data { 472 const char *group; 473 int id; 474}; 475 476 477static int family_handler(struct nl_msg *msg, void *arg) 478{ 479 struct family_data *res = arg; 480 struct nlattr *tb[CTRL_ATTR_MAX + 1]; 481 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 482 struct nlattr *mcgrp; 483 int i; 484 485 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 486 genlmsg_attrlen(gnlh, 0), NULL); 487 if (!tb[CTRL_ATTR_MCAST_GROUPS]) 488 return NL_SKIP; 489 490 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) { 491 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1]; 492 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp), 493 nla_len(mcgrp), NULL); 494 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] || 495 !tb2[CTRL_ATTR_MCAST_GRP_ID] || 496 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]), 497 res->group, 498 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0) 499 continue; 500 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]); 501 break; 502 }; 503 504 return NL_SKIP; 505} 506 507 508static int nl_get_multicast_id(struct nl80211_global *global, 509 const char *family, const char *group) 510{ 511 struct nl_msg *msg; 512 int ret = -1; 513 struct family_data res = { group, -ENOENT }; 514 515 msg = nlmsg_alloc(); 516 if (!msg) 517 return -ENOMEM; 518 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"), 519 0, 0, CTRL_CMD_GETFAMILY, 0); 520 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family); 521 522 ret = send_and_recv_msgs_global(global, msg, family_handler, &res); 523 msg = NULL; 524 if (ret == 0) 525 ret = res.id; 526 527nla_put_failure: 528 nlmsg_free(msg); 529 return ret; 530} 531 532 533static void * nl80211_cmd(struct wpa_driver_nl80211_data *drv, 534 struct nl_msg *msg, int flags, uint8_t cmd) 535{ 536 return genlmsg_put(msg, 0, 0, drv->global->nl80211_id, 537 0, flags, cmd, 0); 538} 539 540 541struct wiphy_idx_data { 542 int wiphy_idx; 543}; 544 545 546static int netdev_info_handler(struct nl_msg *msg, void *arg) 547{ 548 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 549 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 550 struct wiphy_idx_data *info = arg; 551 552 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 553 genlmsg_attrlen(gnlh, 0), NULL); 554 555 if (tb[NL80211_ATTR_WIPHY]) 556 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 557 558 return NL_SKIP; 559} 560 561 562static int nl80211_get_wiphy_index(struct i802_bss *bss) 563{ 564 struct nl_msg *msg; 565 struct wiphy_idx_data data = { 566 .wiphy_idx = -1, 567 }; 568 569 msg = nlmsg_alloc(); 570 if (!msg) 571 return -1; 572 573 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE); 574 575 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 576 577 if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0) 578 return data.wiphy_idx; 579 msg = NULL; 580nla_put_failure: 581 nlmsg_free(msg); 582 return -1; 583} 584 585 586static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv, 587 struct nl80211_wiphy_data *w) 588{ 589 struct nl_msg *msg; 590 int ret = -1; 591 592 msg = nlmsg_alloc(); 593 if (!msg) 594 return -1; 595 596 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS); 597 598 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx); 599 600 ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL); 601 msg = NULL; 602 if (ret) { 603 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command " 604 "failed: ret=%d (%s)", 605 ret, strerror(-ret)); 606 goto nla_put_failure; 607 } 608 ret = 0; 609nla_put_failure: 610 nlmsg_free(msg); 611 return ret; 612} 613 614 615static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle) 616{ 617 struct nl80211_wiphy_data *w = eloop_ctx; 618 619 wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available"); 620 621 nl_recvmsgs(handle, w->nl_cb); 622} 623 624 625static int process_beacon_event(struct nl_msg *msg, void *arg) 626{ 627 struct nl80211_wiphy_data *w = arg; 628 struct wpa_driver_nl80211_data *drv; 629 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 630 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 631 union wpa_event_data event; 632 633 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 634 genlmsg_attrlen(gnlh, 0), NULL); 635 636 if (gnlh->cmd != NL80211_CMD_FRAME) { 637 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)", 638 gnlh->cmd); 639 return NL_SKIP; 640 } 641 642 if (!tb[NL80211_ATTR_FRAME]) 643 return NL_SKIP; 644 645 dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data, 646 wiphy_list) { 647 os_memset(&event, 0, sizeof(event)); 648 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]); 649 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]); 650 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 651 } 652 653 return NL_SKIP; 654} 655 656 657static struct nl80211_wiphy_data * 658nl80211_get_wiphy_data_ap(struct i802_bss *bss) 659{ 660 static DEFINE_DL_LIST(nl80211_wiphys); 661 struct nl80211_wiphy_data *w; 662 int wiphy_idx, found = 0; 663 struct i802_bss *tmp_bss; 664 665 if (bss->wiphy_data != NULL) 666 return bss->wiphy_data; 667 668 wiphy_idx = nl80211_get_wiphy_index(bss); 669 670 dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) { 671 if (w->wiphy_idx == wiphy_idx) 672 goto add; 673 } 674 675 /* alloc new one */ 676 w = os_zalloc(sizeof(*w)); 677 if (w == NULL) 678 return NULL; 679 w->wiphy_idx = wiphy_idx; 680 dl_list_init(&w->bsss); 681 dl_list_init(&w->drvs); 682 683 w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 684 if (!w->nl_cb) { 685 os_free(w); 686 return NULL; 687 } 688 nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL); 689 nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event, 690 w); 691 692 w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb, 693 "wiphy beacons"); 694 if (w->nl_beacons == NULL) { 695 os_free(w); 696 return NULL; 697 } 698 699 if (nl80211_register_beacons(bss->drv, w)) { 700 nl_destroy_handles(&w->nl_beacons); 701 os_free(w); 702 return NULL; 703 } 704 705 eloop_register_read_sock(nl_socket_get_fd(w->nl_beacons), 706 nl80211_recv_beacons, w, w->nl_beacons); 707 708 dl_list_add(&nl80211_wiphys, &w->list); 709 710add: 711 /* drv entry for this bss already there? */ 712 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) { 713 if (tmp_bss->drv == bss->drv) { 714 found = 1; 715 break; 716 } 717 } 718 /* if not add it */ 719 if (!found) 720 dl_list_add(&w->drvs, &bss->drv->wiphy_list); 721 722 dl_list_add(&w->bsss, &bss->wiphy_list); 723 bss->wiphy_data = w; 724 return w; 725} 726 727 728static void nl80211_put_wiphy_data_ap(struct i802_bss *bss) 729{ 730 struct nl80211_wiphy_data *w = bss->wiphy_data; 731 struct i802_bss *tmp_bss; 732 int found = 0; 733 734 if (w == NULL) 735 return; 736 bss->wiphy_data = NULL; 737 dl_list_del(&bss->wiphy_list); 738 739 /* still any for this drv present? */ 740 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) { 741 if (tmp_bss->drv == bss->drv) { 742 found = 1; 743 break; 744 } 745 } 746 /* if not remove it */ 747 if (!found) 748 dl_list_del(&bss->drv->wiphy_list); 749 750 if (!dl_list_empty(&w->bsss)) 751 return; 752 753 eloop_unregister_read_sock(nl_socket_get_fd(w->nl_beacons)); 754 755 nl_cb_put(w->nl_cb); 756 nl_destroy_handles(&w->nl_beacons); 757 dl_list_del(&w->list); 758 os_free(w); 759} 760 761 762static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid) 763{ 764 struct i802_bss *bss = priv; 765 struct wpa_driver_nl80211_data *drv = bss->drv; 766 if (!drv->associated) 767 return -1; 768 os_memcpy(bssid, drv->bssid, ETH_ALEN); 769 return 0; 770} 771 772 773static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid) 774{ 775 struct i802_bss *bss = priv; 776 struct wpa_driver_nl80211_data *drv = bss->drv; 777 if (!drv->associated) 778 return -1; 779 os_memcpy(ssid, drv->ssid, drv->ssid_len); 780 return drv->ssid_len; 781} 782 783 784static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv, 785 char *buf, size_t len, int del) 786{ 787 union wpa_event_data event; 788 789 os_memset(&event, 0, sizeof(event)); 790 if (len > sizeof(event.interface_status.ifname)) 791 len = sizeof(event.interface_status.ifname) - 1; 792 os_memcpy(event.interface_status.ifname, buf, len); 793 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED : 794 EVENT_INTERFACE_ADDED; 795 796 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s", 797 del ? "DEL" : "NEW", 798 event.interface_status.ifname, 799 del ? "removed" : "added"); 800 801 if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) { 802 if (del) { 803 if (drv->if_removed) { 804 wpa_printf(MSG_DEBUG, "nl80211: if_removed " 805 "already set - ignore event"); 806 return; 807 } 808 drv->if_removed = 1; 809 } else { 810 if (if_nametoindex(drv->first_bss.ifname) == 0) { 811 wpa_printf(MSG_DEBUG, "nl80211: Interface %s " 812 "does not exist - ignore " 813 "RTM_NEWLINK", 814 drv->first_bss.ifname); 815 return; 816 } 817 if (!drv->if_removed) { 818 wpa_printf(MSG_DEBUG, "nl80211: if_removed " 819 "already cleared - ignore event"); 820 return; 821 } 822 drv->if_removed = 0; 823 } 824 } 825 826 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event); 827} 828 829 830static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv, 831 u8 *buf, size_t len) 832{ 833 int attrlen, rta_len; 834 struct rtattr *attr; 835 836 attrlen = len; 837 attr = (struct rtattr *) buf; 838 839 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 840 while (RTA_OK(attr, attrlen)) { 841 if (attr->rta_type == IFLA_IFNAME) { 842 if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname) 843 == 0) 844 return 1; 845 else 846 break; 847 } 848 attr = RTA_NEXT(attr, attrlen); 849 } 850 851 return 0; 852} 853 854 855static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv, 856 int ifindex, u8 *buf, size_t len) 857{ 858 if (drv->ifindex == ifindex) 859 return 1; 860 861 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) { 862 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname); 863 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed " 864 "interface"); 865 wpa_driver_nl80211_finish_drv_init(drv); 866 return 1; 867 } 868 869 return 0; 870} 871 872 873static struct wpa_driver_nl80211_data * 874nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len) 875{ 876 struct wpa_driver_nl80211_data *drv; 877 dl_list_for_each(drv, &global->interfaces, 878 struct wpa_driver_nl80211_data, list) { 879 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) || 880 have_ifidx(drv, idx)) 881 return drv; 882 } 883 return NULL; 884} 885 886 887static void wpa_driver_nl80211_event_rtm_newlink(void *ctx, 888 struct ifinfomsg *ifi, 889 u8 *buf, size_t len) 890{ 891 struct nl80211_global *global = ctx; 892 struct wpa_driver_nl80211_data *drv; 893 int attrlen, rta_len; 894 struct rtattr *attr; 895 u32 brid = 0; 896 char namebuf[IFNAMSIZ]; 897 898 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len); 899 if (!drv) { 900 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign " 901 "ifindex %d", ifi->ifi_index); 902 return; 903 } 904 905 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x " 906 "(%s%s%s%s)", 907 drv->operstate, ifi->ifi_flags, 908 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "", 909 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "", 910 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "", 911 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : ""); 912 913 if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) { 914 if (if_indextoname(ifi->ifi_index, namebuf) && 915 linux_iface_up(drv->global->ioctl_sock, 916 drv->first_bss.ifname) > 0) { 917 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down " 918 "event since interface %s is up", namebuf); 919 return; 920 } 921 wpa_printf(MSG_DEBUG, "nl80211: Interface down"); 922 if (drv->ignore_if_down_event) { 923 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down " 924 "event generated by mode change"); 925 drv->ignore_if_down_event = 0; 926 } else { 927 drv->if_disabled = 1; 928 wpa_supplicant_event(drv->ctx, 929 EVENT_INTERFACE_DISABLED, NULL); 930 } 931 } 932 933 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) { 934 if (if_indextoname(ifi->ifi_index, namebuf) && 935 linux_iface_up(drv->global->ioctl_sock, 936 drv->first_bss.ifname) == 0) { 937 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 938 "event since interface %s is down", 939 namebuf); 940 } else if (if_nametoindex(drv->first_bss.ifname) == 0) { 941 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 942 "event since interface %s does not exist", 943 drv->first_bss.ifname); 944 } else if (drv->if_removed) { 945 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 946 "event since interface %s is marked " 947 "removed", drv->first_bss.ifname); 948 } else { 949 wpa_printf(MSG_DEBUG, "nl80211: Interface up"); 950 drv->if_disabled = 0; 951 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, 952 NULL); 953 } 954 } 955 956 /* 957 * Some drivers send the association event before the operup event--in 958 * this case, lifting operstate in wpa_driver_nl80211_set_operstate() 959 * fails. This will hit us when wpa_supplicant does not need to do 960 * IEEE 802.1X authentication 961 */ 962 if (drv->operstate == 1 && 963 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP && 964 !(ifi->ifi_flags & IFF_RUNNING)) 965 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 966 -1, IF_OPER_UP); 967 968 attrlen = len; 969 attr = (struct rtattr *) buf; 970 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 971 while (RTA_OK(attr, attrlen)) { 972 if (attr->rta_type == IFLA_IFNAME) { 973 wpa_driver_nl80211_event_link( 974 drv, 975 ((char *) attr) + rta_len, 976 attr->rta_len - rta_len, 0); 977 } else if (attr->rta_type == IFLA_MASTER) 978 brid = nla_get_u32((struct nlattr *) attr); 979 attr = RTA_NEXT(attr, attrlen); 980 } 981 982 if (ifi->ifi_family == AF_BRIDGE && brid) { 983 /* device has been added to bridge */ 984 if_indextoname(brid, namebuf); 985 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s", 986 brid, namebuf); 987 add_ifidx(drv, brid); 988 } 989} 990 991 992static void wpa_driver_nl80211_event_rtm_dellink(void *ctx, 993 struct ifinfomsg *ifi, 994 u8 *buf, size_t len) 995{ 996 struct nl80211_global *global = ctx; 997 struct wpa_driver_nl80211_data *drv; 998 int attrlen, rta_len; 999 struct rtattr *attr; 1000 u32 brid = 0; 1001 1002 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len); 1003 if (!drv) { 1004 wpa_printf(MSG_DEBUG, "nl80211: Ignore dellink event for " 1005 "foreign ifindex %d", ifi->ifi_index); 1006 return; 1007 } 1008 1009 attrlen = len; 1010 attr = (struct rtattr *) buf; 1011 1012 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 1013 while (RTA_OK(attr, attrlen)) { 1014 if (attr->rta_type == IFLA_IFNAME) { 1015 wpa_driver_nl80211_event_link( 1016 drv, 1017 ((char *) attr) + rta_len, 1018 attr->rta_len - rta_len, 1); 1019 } else if (attr->rta_type == IFLA_MASTER) 1020 brid = nla_get_u32((struct nlattr *) attr); 1021 attr = RTA_NEXT(attr, attrlen); 1022 } 1023 1024 if (ifi->ifi_family == AF_BRIDGE && brid) { 1025 /* device has been removed from bridge */ 1026 char namebuf[IFNAMSIZ]; 1027 if_indextoname(brid, namebuf); 1028 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge " 1029 "%s", brid, namebuf); 1030 del_ifidx(drv, brid); 1031 } 1032} 1033 1034 1035static void mlme_event_auth(struct wpa_driver_nl80211_data *drv, 1036 const u8 *frame, size_t len) 1037{ 1038 const struct ieee80211_mgmt *mgmt; 1039 union wpa_event_data event; 1040 1041 mgmt = (const struct ieee80211_mgmt *) frame; 1042 if (len < 24 + sizeof(mgmt->u.auth)) { 1043 wpa_printf(MSG_DEBUG, "nl80211: Too short association event " 1044 "frame"); 1045 return; 1046 } 1047 1048 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN); 1049 os_memset(&event, 0, sizeof(event)); 1050 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN); 1051 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg); 1052 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code); 1053 if (len > 24 + sizeof(mgmt->u.auth)) { 1054 event.auth.ies = mgmt->u.auth.variable; 1055 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth); 1056 } 1057 1058 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event); 1059} 1060 1061 1062static unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv) 1063{ 1064 struct nl_msg *msg; 1065 int ret; 1066 struct nl80211_bss_info_arg arg; 1067 1068 os_memset(&arg, 0, sizeof(arg)); 1069 msg = nlmsg_alloc(); 1070 if (!msg) 1071 goto nla_put_failure; 1072 1073 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 1074 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1075 1076 arg.drv = drv; 1077 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 1078 msg = NULL; 1079 if (ret == 0) { 1080 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the " 1081 "associated BSS from scan results: %u MHz", 1082 arg.assoc_freq); 1083 return arg.assoc_freq ? arg.assoc_freq : drv->assoc_freq; 1084 } 1085 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 1086 "(%s)", ret, strerror(-ret)); 1087nla_put_failure: 1088 nlmsg_free(msg); 1089 return drv->assoc_freq; 1090} 1091 1092 1093static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv, 1094 const u8 *frame, size_t len) 1095{ 1096 const struct ieee80211_mgmt *mgmt; 1097 union wpa_event_data event; 1098 u16 status; 1099 1100 mgmt = (const struct ieee80211_mgmt *) frame; 1101 if (len < 24 + sizeof(mgmt->u.assoc_resp)) { 1102 wpa_printf(MSG_DEBUG, "nl80211: Too short association event " 1103 "frame"); 1104 return; 1105 } 1106 1107 status = le_to_host16(mgmt->u.assoc_resp.status_code); 1108 if (status != WLAN_STATUS_SUCCESS) { 1109 os_memset(&event, 0, sizeof(event)); 1110 event.assoc_reject.bssid = mgmt->bssid; 1111 if (len > 24 + sizeof(mgmt->u.assoc_resp)) { 1112 event.assoc_reject.resp_ies = 1113 (u8 *) mgmt->u.assoc_resp.variable; 1114 event.assoc_reject.resp_ies_len = 1115 len - 24 - sizeof(mgmt->u.assoc_resp); 1116 } 1117 event.assoc_reject.status_code = status; 1118 1119 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event); 1120 return; 1121 } 1122 1123 drv->associated = 1; 1124 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN); 1125 1126 os_memset(&event, 0, sizeof(event)); 1127 if (len > 24 + sizeof(mgmt->u.assoc_resp)) { 1128 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable; 1129 event.assoc_info.resp_ies_len = 1130 len - 24 - sizeof(mgmt->u.assoc_resp); 1131 } 1132 1133 event.assoc_info.freq = drv->assoc_freq; 1134 1135 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); 1136} 1137 1138 1139static void mlme_event_connect(struct wpa_driver_nl80211_data *drv, 1140 enum nl80211_commands cmd, struct nlattr *status, 1141 struct nlattr *addr, struct nlattr *req_ie, 1142 struct nlattr *resp_ie) 1143{ 1144 union wpa_event_data event; 1145 1146 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 1147 /* 1148 * Avoid reporting two association events that would confuse 1149 * the core code. 1150 */ 1151 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) " 1152 "when using userspace SME", cmd); 1153 return; 1154 } 1155 1156 os_memset(&event, 0, sizeof(event)); 1157 if (cmd == NL80211_CMD_CONNECT && 1158 nla_get_u16(status) != WLAN_STATUS_SUCCESS) { 1159 if (addr) 1160 event.assoc_reject.bssid = nla_data(addr); 1161 if (resp_ie) { 1162 event.assoc_reject.resp_ies = nla_data(resp_ie); 1163 event.assoc_reject.resp_ies_len = nla_len(resp_ie); 1164 } 1165 event.assoc_reject.status_code = nla_get_u16(status); 1166 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event); 1167 return; 1168 } 1169 1170 drv->associated = 1; 1171 if (addr) 1172 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN); 1173 1174 if (req_ie) { 1175 event.assoc_info.req_ies = nla_data(req_ie); 1176 event.assoc_info.req_ies_len = nla_len(req_ie); 1177 } 1178 if (resp_ie) { 1179 event.assoc_info.resp_ies = nla_data(resp_ie); 1180 event.assoc_info.resp_ies_len = nla_len(resp_ie); 1181 } 1182 1183 event.assoc_info.freq = nl80211_get_assoc_freq(drv); 1184 1185 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); 1186} 1187 1188 1189static void mlme_event_disconnect(struct wpa_driver_nl80211_data *drv, 1190 struct nlattr *reason, struct nlattr *addr, 1191 struct nlattr *by_ap) 1192{ 1193 union wpa_event_data data; 1194 1195 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 1196 /* 1197 * Avoid reporting two disassociation events that could 1198 * confuse the core code. 1199 */ 1200 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect " 1201 "event when using userspace SME"); 1202 return; 1203 } 1204 1205 drv->associated = 0; 1206 os_memset(&data, 0, sizeof(data)); 1207 if (reason) 1208 data.deauth_info.reason_code = nla_get_u16(reason); 1209 data.deauth_info.locally_generated = by_ap == NULL; 1210 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, &data); 1211} 1212 1213 1214static void mlme_event_ch_switch(struct wpa_driver_nl80211_data *drv, 1215 struct nlattr *freq, struct nlattr *type) 1216{ 1217 union wpa_event_data data; 1218 int ht_enabled = 1; 1219 int chan_offset = 0; 1220 1221 wpa_printf(MSG_DEBUG, "nl80211: Channel switch event"); 1222 1223 if (!freq || !type) 1224 return; 1225 1226 switch (nla_get_u32(type)) { 1227 case NL80211_CHAN_NO_HT: 1228 ht_enabled = 0; 1229 break; 1230 case NL80211_CHAN_HT20: 1231 break; 1232 case NL80211_CHAN_HT40PLUS: 1233 chan_offset = 1; 1234 break; 1235 case NL80211_CHAN_HT40MINUS: 1236 chan_offset = -1; 1237 break; 1238 } 1239 1240 data.ch_switch.freq = nla_get_u32(freq); 1241 data.ch_switch.ht_enabled = ht_enabled; 1242 data.ch_switch.ch_offset = chan_offset; 1243 1244 wpa_supplicant_event(drv->ctx, EVENT_CH_SWITCH, &data); 1245} 1246 1247 1248static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv, 1249 enum nl80211_commands cmd, struct nlattr *addr) 1250{ 1251 union wpa_event_data event; 1252 enum wpa_event_type ev; 1253 1254 if (nla_len(addr) != ETH_ALEN) 1255 return; 1256 1257 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR, 1258 cmd, MAC2STR((u8 *) nla_data(addr))); 1259 1260 if (cmd == NL80211_CMD_AUTHENTICATE) 1261 ev = EVENT_AUTH_TIMED_OUT; 1262 else if (cmd == NL80211_CMD_ASSOCIATE) 1263 ev = EVENT_ASSOC_TIMED_OUT; 1264 else 1265 return; 1266 1267 os_memset(&event, 0, sizeof(event)); 1268 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN); 1269 wpa_supplicant_event(drv->ctx, ev, &event); 1270} 1271 1272 1273static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv, 1274 struct nlattr *freq, struct nlattr *sig, 1275 const u8 *frame, size_t len) 1276{ 1277 const struct ieee80211_mgmt *mgmt; 1278 union wpa_event_data event; 1279 u16 fc, stype; 1280 int ssi_signal = 0; 1281 1282 mgmt = (const struct ieee80211_mgmt *) frame; 1283 if (len < 24) { 1284 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame"); 1285 return; 1286 } 1287 1288 fc = le_to_host16(mgmt->frame_control); 1289 stype = WLAN_FC_GET_STYPE(fc); 1290 1291 if (sig) 1292 ssi_signal = (s32) nla_get_u32(sig); 1293 1294 os_memset(&event, 0, sizeof(event)); 1295 if (freq) { 1296 event.rx_action.freq = nla_get_u32(freq); 1297 drv->last_mgmt_freq = event.rx_action.freq; 1298 } 1299 if (stype == WLAN_FC_STYPE_ACTION) { 1300 event.rx_action.da = mgmt->da; 1301 event.rx_action.sa = mgmt->sa; 1302 event.rx_action.bssid = mgmt->bssid; 1303 event.rx_action.category = mgmt->u.action.category; 1304 event.rx_action.data = &mgmt->u.action.category + 1; 1305 event.rx_action.len = frame + len - event.rx_action.data; 1306 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event); 1307 } else { 1308 event.rx_mgmt.frame = frame; 1309 event.rx_mgmt.frame_len = len; 1310 event.rx_mgmt.ssi_signal = ssi_signal; 1311 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 1312 } 1313} 1314 1315 1316static void mlme_event_mgmt_tx_status(struct wpa_driver_nl80211_data *drv, 1317 struct nlattr *cookie, const u8 *frame, 1318 size_t len, struct nlattr *ack) 1319{ 1320 union wpa_event_data event; 1321 const struct ieee80211_hdr *hdr; 1322 u16 fc; 1323 1324 if (!is_ap_interface(drv->nlmode)) { 1325 u64 cookie_val; 1326 1327 if (!cookie) 1328 return; 1329 1330 cookie_val = nla_get_u64(cookie); 1331 wpa_printf(MSG_DEBUG, "nl80211: Action TX status:" 1332 " cookie=0%llx%s (ack=%d)", 1333 (long long unsigned int) cookie_val, 1334 cookie_val == drv->send_action_cookie ? 1335 " (match)" : " (unknown)", ack != NULL); 1336 if (cookie_val != drv->send_action_cookie) 1337 return; 1338 } 1339 1340 hdr = (const struct ieee80211_hdr *) frame; 1341 fc = le_to_host16(hdr->frame_control); 1342 1343 os_memset(&event, 0, sizeof(event)); 1344 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 1345 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 1346 event.tx_status.dst = hdr->addr1; 1347 event.tx_status.data = frame; 1348 event.tx_status.data_len = len; 1349 event.tx_status.ack = ack != NULL; 1350 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event); 1351} 1352 1353 1354static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv, 1355 enum wpa_event_type type, 1356 const u8 *frame, size_t len) 1357{ 1358 const struct ieee80211_mgmt *mgmt; 1359 union wpa_event_data event; 1360 const u8 *bssid = NULL; 1361 u16 reason_code = 0; 1362 1363 mgmt = (const struct ieee80211_mgmt *) frame; 1364 if (len >= 24) { 1365 bssid = mgmt->bssid; 1366 1367 if (drv->associated != 0 && 1368 os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 && 1369 os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) { 1370 /* 1371 * We have presumably received this deauth as a 1372 * response to a clear_state_mismatch() outgoing 1373 * deauth. Don't let it take us offline! 1374 */ 1375 wpa_printf(MSG_DEBUG, "nl80211: Deauth received " 1376 "from Unknown BSSID " MACSTR " -- ignoring", 1377 MAC2STR(bssid)); 1378 return; 1379 } 1380 } 1381 1382 drv->associated = 0; 1383 os_memset(&event, 0, sizeof(event)); 1384 1385 /* Note: Same offset for Reason Code in both frame subtypes */ 1386 if (len >= 24 + sizeof(mgmt->u.deauth)) 1387 reason_code = le_to_host16(mgmt->u.deauth.reason_code); 1388 1389 if (type == EVENT_DISASSOC) { 1390 event.disassoc_info.locally_generated = 1391 !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN); 1392 event.disassoc_info.addr = bssid; 1393 event.disassoc_info.reason_code = reason_code; 1394 if (frame + len > mgmt->u.disassoc.variable) { 1395 event.disassoc_info.ie = mgmt->u.disassoc.variable; 1396 event.disassoc_info.ie_len = frame + len - 1397 mgmt->u.disassoc.variable; 1398 } 1399 } else { 1400 event.deauth_info.locally_generated = 1401 !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN); 1402 event.deauth_info.addr = bssid; 1403 event.deauth_info.reason_code = reason_code; 1404 if (frame + len > mgmt->u.deauth.variable) { 1405 event.deauth_info.ie = mgmt->u.deauth.variable; 1406 event.deauth_info.ie_len = frame + len - 1407 mgmt->u.deauth.variable; 1408 } 1409 } 1410 1411 wpa_supplicant_event(drv->ctx, type, &event); 1412} 1413 1414 1415static void mlme_event_unprot_disconnect(struct wpa_driver_nl80211_data *drv, 1416 enum wpa_event_type type, 1417 const u8 *frame, size_t len) 1418{ 1419 const struct ieee80211_mgmt *mgmt; 1420 union wpa_event_data event; 1421 u16 reason_code = 0; 1422 1423 if (len < 24) 1424 return; 1425 1426 mgmt = (const struct ieee80211_mgmt *) frame; 1427 1428 os_memset(&event, 0, sizeof(event)); 1429 /* Note: Same offset for Reason Code in both frame subtypes */ 1430 if (len >= 24 + sizeof(mgmt->u.deauth)) 1431 reason_code = le_to_host16(mgmt->u.deauth.reason_code); 1432 1433 if (type == EVENT_UNPROT_DISASSOC) { 1434 event.unprot_disassoc.sa = mgmt->sa; 1435 event.unprot_disassoc.da = mgmt->da; 1436 event.unprot_disassoc.reason_code = reason_code; 1437 } else { 1438 event.unprot_deauth.sa = mgmt->sa; 1439 event.unprot_deauth.da = mgmt->da; 1440 event.unprot_deauth.reason_code = reason_code; 1441 } 1442 1443 wpa_supplicant_event(drv->ctx, type, &event); 1444} 1445 1446 1447static void mlme_event(struct wpa_driver_nl80211_data *drv, 1448 enum nl80211_commands cmd, struct nlattr *frame, 1449 struct nlattr *addr, struct nlattr *timed_out, 1450 struct nlattr *freq, struct nlattr *ack, 1451 struct nlattr *cookie, struct nlattr *sig) 1452{ 1453 if (timed_out && addr) { 1454 mlme_timeout_event(drv, cmd, addr); 1455 return; 1456 } 1457 1458 if (frame == NULL) { 1459 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame " 1460 "data", cmd); 1461 return; 1462 } 1463 1464 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd); 1465 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame", 1466 nla_data(frame), nla_len(frame)); 1467 1468 switch (cmd) { 1469 case NL80211_CMD_AUTHENTICATE: 1470 mlme_event_auth(drv, nla_data(frame), nla_len(frame)); 1471 break; 1472 case NL80211_CMD_ASSOCIATE: 1473 mlme_event_assoc(drv, nla_data(frame), nla_len(frame)); 1474 break; 1475 case NL80211_CMD_DEAUTHENTICATE: 1476 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH, 1477 nla_data(frame), nla_len(frame)); 1478 break; 1479 case NL80211_CMD_DISASSOCIATE: 1480 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC, 1481 nla_data(frame), nla_len(frame)); 1482 break; 1483 case NL80211_CMD_FRAME: 1484 mlme_event_mgmt(drv, freq, sig, nla_data(frame), 1485 nla_len(frame)); 1486 break; 1487 case NL80211_CMD_FRAME_TX_STATUS: 1488 mlme_event_mgmt_tx_status(drv, cookie, nla_data(frame), 1489 nla_len(frame), ack); 1490 break; 1491 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 1492 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH, 1493 nla_data(frame), nla_len(frame)); 1494 break; 1495 case NL80211_CMD_UNPROT_DISASSOCIATE: 1496 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC, 1497 nla_data(frame), nla_len(frame)); 1498 break; 1499 default: 1500 break; 1501 } 1502} 1503 1504 1505static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv, 1506 struct nlattr *tb[]) 1507{ 1508 union wpa_event_data data; 1509 1510 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure"); 1511 os_memset(&data, 0, sizeof(data)); 1512 if (tb[NL80211_ATTR_MAC]) { 1513 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address", 1514 nla_data(tb[NL80211_ATTR_MAC]), 1515 nla_len(tb[NL80211_ATTR_MAC])); 1516 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]); 1517 } 1518 if (tb[NL80211_ATTR_KEY_SEQ]) { 1519 wpa_hexdump(MSG_DEBUG, "nl80211: TSC", 1520 nla_data(tb[NL80211_ATTR_KEY_SEQ]), 1521 nla_len(tb[NL80211_ATTR_KEY_SEQ])); 1522 } 1523 if (tb[NL80211_ATTR_KEY_TYPE]) { 1524 enum nl80211_key_type key_type = 1525 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]); 1526 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type); 1527 if (key_type == NL80211_KEYTYPE_PAIRWISE) 1528 data.michael_mic_failure.unicast = 1; 1529 } else 1530 data.michael_mic_failure.unicast = 1; 1531 1532 if (tb[NL80211_ATTR_KEY_IDX]) { 1533 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]); 1534 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id); 1535 } 1536 1537 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data); 1538} 1539 1540 1541static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv, 1542 struct nlattr *tb[]) 1543{ 1544 if (tb[NL80211_ATTR_MAC] == NULL) { 1545 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined " 1546 "event"); 1547 return; 1548 } 1549 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 1550 drv->associated = 1; 1551 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined", 1552 MAC2STR(drv->bssid)); 1553 1554 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL); 1555} 1556 1557 1558static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv, 1559 int cancel_event, struct nlattr *tb[]) 1560{ 1561 unsigned int freq, chan_type, duration; 1562 union wpa_event_data data; 1563 u64 cookie; 1564 1565 if (tb[NL80211_ATTR_WIPHY_FREQ]) 1566 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]); 1567 else 1568 freq = 0; 1569 1570 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) 1571 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 1572 else 1573 chan_type = 0; 1574 1575 if (tb[NL80211_ATTR_DURATION]) 1576 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]); 1577 else 1578 duration = 0; 1579 1580 if (tb[NL80211_ATTR_COOKIE]) 1581 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 1582 else 1583 cookie = 0; 1584 1585 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d " 1586 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))", 1587 cancel_event, freq, chan_type, duration, 1588 (long long unsigned int) cookie, 1589 cookie == drv->remain_on_chan_cookie ? "match" : "unknown"); 1590 1591 if (cookie != drv->remain_on_chan_cookie) 1592 return; /* not for us */ 1593 1594 if (cancel_event) 1595 drv->pending_remain_on_chan = 0; 1596 1597 os_memset(&data, 0, sizeof(data)); 1598 data.remain_on_channel.freq = freq; 1599 data.remain_on_channel.duration = duration; 1600 wpa_supplicant_event(drv->ctx, cancel_event ? 1601 EVENT_CANCEL_REMAIN_ON_CHANNEL : 1602 EVENT_REMAIN_ON_CHANNEL, &data); 1603} 1604 1605 1606static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted, 1607 struct nlattr *tb[]) 1608{ 1609 union wpa_event_data event; 1610 struct nlattr *nl; 1611 int rem; 1612 struct scan_info *info; 1613#define MAX_REPORT_FREQS 50 1614 int freqs[MAX_REPORT_FREQS]; 1615 int num_freqs = 0; 1616 1617 if (drv->scan_for_auth) { 1618 drv->scan_for_auth = 0; 1619 wpa_printf(MSG_DEBUG, "nl80211: Scan results for missing " 1620 "cfg80211 BSS entry"); 1621 wpa_driver_nl80211_authenticate_retry(drv); 1622 return; 1623 } 1624 1625 os_memset(&event, 0, sizeof(event)); 1626 info = &event.scan_info; 1627 info->aborted = aborted; 1628 1629 if (tb[NL80211_ATTR_SCAN_SSIDS]) { 1630 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) { 1631 struct wpa_driver_scan_ssid *s = 1632 &info->ssids[info->num_ssids]; 1633 s->ssid = nla_data(nl); 1634 s->ssid_len = nla_len(nl); 1635 info->num_ssids++; 1636 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS) 1637 break; 1638 } 1639 } 1640 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) { 1641 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem) 1642 { 1643 freqs[num_freqs] = nla_get_u32(nl); 1644 num_freqs++; 1645 if (num_freqs == MAX_REPORT_FREQS - 1) 1646 break; 1647 } 1648 info->freqs = freqs; 1649 info->num_freqs = num_freqs; 1650 } 1651 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event); 1652} 1653 1654 1655static int get_link_signal(struct nl_msg *msg, void *arg) 1656{ 1657 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1658 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1659 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1]; 1660 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = { 1661 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 }, 1662 }; 1663 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1]; 1664 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = { 1665 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 }, 1666 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 }, 1667 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG }, 1668 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG }, 1669 }; 1670 struct wpa_signal_info *sig_change = arg; 1671 1672 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1673 genlmsg_attrlen(gnlh, 0), NULL); 1674 if (!tb[NL80211_ATTR_STA_INFO] || 1675 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX, 1676 tb[NL80211_ATTR_STA_INFO], policy)) 1677 return NL_SKIP; 1678 if (!sinfo[NL80211_STA_INFO_SIGNAL]) 1679 return NL_SKIP; 1680 1681 sig_change->current_signal = 1682 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]); 1683 1684 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) { 1685 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX, 1686 sinfo[NL80211_STA_INFO_TX_BITRATE], 1687 rate_policy)) { 1688 sig_change->current_txrate = 0; 1689 } else { 1690 if (rinfo[NL80211_RATE_INFO_BITRATE]) { 1691 sig_change->current_txrate = 1692 nla_get_u16(rinfo[ 1693 NL80211_RATE_INFO_BITRATE]) * 100; 1694 } 1695 } 1696 } 1697 1698 return NL_SKIP; 1699} 1700 1701 1702static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv, 1703 struct wpa_signal_info *sig) 1704{ 1705 struct nl_msg *msg; 1706 1707 sig->current_signal = -9999; 1708 sig->current_txrate = 0; 1709 1710 msg = nlmsg_alloc(); 1711 if (!msg) 1712 return -ENOMEM; 1713 1714 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 1715 1716 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1717 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 1718 1719 return send_and_recv_msgs(drv, msg, get_link_signal, sig); 1720 nla_put_failure: 1721 nlmsg_free(msg); 1722 return -ENOBUFS; 1723} 1724 1725 1726static int get_link_noise(struct nl_msg *msg, void *arg) 1727{ 1728 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1729 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1730 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 1731 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 1732 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 1733 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 1734 }; 1735 struct wpa_signal_info *sig_change = arg; 1736 1737 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1738 genlmsg_attrlen(gnlh, 0), NULL); 1739 1740 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 1741 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!"); 1742 return NL_SKIP; 1743 } 1744 1745 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 1746 tb[NL80211_ATTR_SURVEY_INFO], 1747 survey_policy)) { 1748 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested " 1749 "attributes!"); 1750 return NL_SKIP; 1751 } 1752 1753 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 1754 return NL_SKIP; 1755 1756 if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 1757 sig_change->frequency) 1758 return NL_SKIP; 1759 1760 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 1761 return NL_SKIP; 1762 1763 sig_change->current_noise = 1764 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 1765 1766 return NL_SKIP; 1767} 1768 1769 1770static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv, 1771 struct wpa_signal_info *sig_change) 1772{ 1773 struct nl_msg *msg; 1774 1775 sig_change->current_noise = 9999; 1776 sig_change->frequency = drv->assoc_freq; 1777 1778 msg = nlmsg_alloc(); 1779 if (!msg) 1780 return -ENOMEM; 1781 1782 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 1783 1784 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1785 1786 return send_and_recv_msgs(drv, msg, get_link_noise, sig_change); 1787 nla_put_failure: 1788 nlmsg_free(msg); 1789 return -ENOBUFS; 1790} 1791 1792 1793static int get_noise_for_scan_results(struct nl_msg *msg, void *arg) 1794{ 1795 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1796 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1797 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 1798 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 1799 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 1800 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 1801 }; 1802 struct wpa_scan_results *scan_results = arg; 1803 struct wpa_scan_res *scan_res; 1804 size_t i; 1805 1806 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1807 genlmsg_attrlen(gnlh, 0), NULL); 1808 1809 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 1810 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing"); 1811 return NL_SKIP; 1812 } 1813 1814 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 1815 tb[NL80211_ATTR_SURVEY_INFO], 1816 survey_policy)) { 1817 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested " 1818 "attributes"); 1819 return NL_SKIP; 1820 } 1821 1822 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 1823 return NL_SKIP; 1824 1825 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 1826 return NL_SKIP; 1827 1828 for (i = 0; i < scan_results->num; ++i) { 1829 scan_res = scan_results->res[i]; 1830 if (!scan_res) 1831 continue; 1832 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 1833 scan_res->freq) 1834 continue; 1835 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID)) 1836 continue; 1837 scan_res->noise = (s8) 1838 nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 1839 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID; 1840 } 1841 1842 return NL_SKIP; 1843} 1844 1845 1846static int nl80211_get_noise_for_scan_results( 1847 struct wpa_driver_nl80211_data *drv, 1848 struct wpa_scan_results *scan_res) 1849{ 1850 struct nl_msg *msg; 1851 1852 msg = nlmsg_alloc(); 1853 if (!msg) 1854 return -ENOMEM; 1855 1856 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 1857 1858 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1859 1860 return send_and_recv_msgs(drv, msg, get_noise_for_scan_results, 1861 scan_res); 1862 nla_put_failure: 1863 nlmsg_free(msg); 1864 return -ENOBUFS; 1865} 1866 1867 1868static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv, 1869 struct nlattr *tb[]) 1870{ 1871 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 1872 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 1873 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 }, 1874 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 1875 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 }, 1876 }; 1877 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1]; 1878 enum nl80211_cqm_rssi_threshold_event event; 1879 union wpa_event_data ed; 1880 struct wpa_signal_info sig; 1881 int res; 1882 1883 if (tb[NL80211_ATTR_CQM] == NULL || 1884 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM], 1885 cqm_policy)) { 1886 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event"); 1887 return; 1888 } 1889 1890 os_memset(&ed, 0, sizeof(ed)); 1891 1892 if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) { 1893 if (!tb[NL80211_ATTR_MAC]) 1894 return; 1895 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]), 1896 ETH_ALEN); 1897 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed); 1898 return; 1899 } 1900 1901 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL) 1902 return; 1903 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]); 1904 1905 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) { 1906 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 1907 "event: RSSI high"); 1908 ed.signal_change.above_threshold = 1; 1909 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) { 1910 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 1911 "event: RSSI low"); 1912 ed.signal_change.above_threshold = 0; 1913 } else 1914 return; 1915 1916 res = nl80211_get_link_signal(drv, &sig); 1917 if (res == 0) { 1918 ed.signal_change.current_signal = sig.current_signal; 1919 ed.signal_change.current_txrate = sig.current_txrate; 1920 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm txrate: %d", 1921 sig.current_signal, sig.current_txrate); 1922 } 1923 1924 res = nl80211_get_link_noise(drv, &sig); 1925 if (res == 0) { 1926 ed.signal_change.current_noise = sig.current_noise; 1927 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm", 1928 sig.current_noise); 1929 } 1930 1931 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed); 1932} 1933 1934 1935static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv, 1936 struct nlattr **tb) 1937{ 1938 u8 *addr; 1939 union wpa_event_data data; 1940 1941 if (tb[NL80211_ATTR_MAC] == NULL) 1942 return; 1943 addr = nla_data(tb[NL80211_ATTR_MAC]); 1944 wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr)); 1945 1946 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { 1947 u8 *ies = NULL; 1948 size_t ies_len = 0; 1949 if (tb[NL80211_ATTR_IE]) { 1950 ies = nla_data(tb[NL80211_ATTR_IE]); 1951 ies_len = nla_len(tb[NL80211_ATTR_IE]); 1952 } 1953 wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len); 1954 drv_event_assoc(drv->ctx, addr, ies, ies_len, 0); 1955 return; 1956 } 1957 1958 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 1959 return; 1960 1961 os_memset(&data, 0, sizeof(data)); 1962 os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN); 1963 wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data); 1964} 1965 1966 1967static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv, 1968 struct nlattr **tb) 1969{ 1970 u8 *addr; 1971 union wpa_event_data data; 1972 1973 if (tb[NL80211_ATTR_MAC] == NULL) 1974 return; 1975 addr = nla_data(tb[NL80211_ATTR_MAC]); 1976 wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR, 1977 MAC2STR(addr)); 1978 1979 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { 1980 drv_event_disassoc(drv->ctx, addr); 1981 return; 1982 } 1983 1984 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 1985 return; 1986 1987 os_memset(&data, 0, sizeof(data)); 1988 os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN); 1989 wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data); 1990} 1991 1992 1993static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv, 1994 struct nlattr **tb) 1995{ 1996 struct nlattr *rekey_info[NUM_NL80211_REKEY_DATA]; 1997 static struct nla_policy rekey_policy[NUM_NL80211_REKEY_DATA] = { 1998 [NL80211_REKEY_DATA_KEK] = { 1999 .minlen = NL80211_KEK_LEN, 2000 .maxlen = NL80211_KEK_LEN, 2001 }, 2002 [NL80211_REKEY_DATA_KCK] = { 2003 .minlen = NL80211_KCK_LEN, 2004 .maxlen = NL80211_KCK_LEN, 2005 }, 2006 [NL80211_REKEY_DATA_REPLAY_CTR] = { 2007 .minlen = NL80211_REPLAY_CTR_LEN, 2008 .maxlen = NL80211_REPLAY_CTR_LEN, 2009 }, 2010 }; 2011 union wpa_event_data data; 2012 2013 if (!tb[NL80211_ATTR_MAC]) 2014 return; 2015 if (!tb[NL80211_ATTR_REKEY_DATA]) 2016 return; 2017 if (nla_parse_nested(rekey_info, MAX_NL80211_REKEY_DATA, 2018 tb[NL80211_ATTR_REKEY_DATA], rekey_policy)) 2019 return; 2020 if (!rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]) 2021 return; 2022 2023 os_memset(&data, 0, sizeof(data)); 2024 data.driver_gtk_rekey.bssid = nla_data(tb[NL80211_ATTR_MAC]); 2025 wpa_printf(MSG_DEBUG, "nl80211: Rekey offload event for BSSID " MACSTR, 2026 MAC2STR(data.driver_gtk_rekey.bssid)); 2027 data.driver_gtk_rekey.replay_ctr = 2028 nla_data(rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]); 2029 wpa_hexdump(MSG_DEBUG, "nl80211: Rekey offload - Replay Counter", 2030 data.driver_gtk_rekey.replay_ctr, NL80211_REPLAY_CTR_LEN); 2031 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_GTK_REKEY, &data); 2032} 2033 2034 2035static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv, 2036 struct nlattr **tb) 2037{ 2038 struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE]; 2039 static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = { 2040 [NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 }, 2041 [NL80211_PMKSA_CANDIDATE_BSSID] = { 2042 .minlen = ETH_ALEN, 2043 .maxlen = ETH_ALEN, 2044 }, 2045 [NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG }, 2046 }; 2047 union wpa_event_data data; 2048 2049 if (!tb[NL80211_ATTR_PMKSA_CANDIDATE]) 2050 return; 2051 if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE, 2052 tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy)) 2053 return; 2054 if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] || 2055 !cand[NL80211_PMKSA_CANDIDATE_BSSID]) 2056 return; 2057 2058 os_memset(&data, 0, sizeof(data)); 2059 os_memcpy(data.pmkid_candidate.bssid, 2060 nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN); 2061 data.pmkid_candidate.index = 2062 nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]); 2063 data.pmkid_candidate.preauth = 2064 cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL; 2065 wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data); 2066} 2067 2068 2069static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv, 2070 struct nlattr **tb) 2071{ 2072 union wpa_event_data data; 2073 2074 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_ACK]) 2075 return; 2076 2077 os_memset(&data, 0, sizeof(data)); 2078 os_memcpy(data.client_poll.addr, 2079 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2080 2081 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_CLIENT_POLL_OK, &data); 2082} 2083 2084 2085static void nl80211_spurious_frame(struct i802_bss *bss, struct nlattr **tb, 2086 int wds) 2087{ 2088 struct wpa_driver_nl80211_data *drv = bss->drv; 2089 union wpa_event_data event; 2090 2091 if (!tb[NL80211_ATTR_MAC]) 2092 return; 2093 2094 os_memset(&event, 0, sizeof(event)); 2095 event.rx_from_unknown.bssid = bss->addr; 2096 event.rx_from_unknown.addr = nla_data(tb[NL80211_ATTR_MAC]); 2097 event.rx_from_unknown.wds = wds; 2098 2099 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 2100} 2101 2102 2103static void do_process_drv_event(struct wpa_driver_nl80211_data *drv, 2104 int cmd, struct nlattr **tb) 2105{ 2106 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED && 2107 (cmd == NL80211_CMD_NEW_SCAN_RESULTS || 2108 cmd == NL80211_CMD_SCAN_ABORTED)) { 2109 wpa_driver_nl80211_set_mode(&drv->first_bss, 2110 drv->ap_scan_as_station); 2111 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 2112 } 2113 2114 switch (cmd) { 2115 case NL80211_CMD_TRIGGER_SCAN: 2116 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger"); 2117 break; 2118 case NL80211_CMD_START_SCHED_SCAN: 2119 wpa_printf(MSG_DEBUG, "nl80211: Sched scan started"); 2120 break; 2121 case NL80211_CMD_SCHED_SCAN_STOPPED: 2122 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stopped"); 2123 wpa_supplicant_event(drv->ctx, EVENT_SCHED_SCAN_STOPPED, NULL); 2124 break; 2125 case NL80211_CMD_NEW_SCAN_RESULTS: 2126 wpa_printf(MSG_DEBUG, "nl80211: New scan results available"); 2127 drv->scan_complete_events = 1; 2128 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 2129 drv->ctx); 2130 send_scan_event(drv, 0, tb); 2131 break; 2132 case NL80211_CMD_SCHED_SCAN_RESULTS: 2133 wpa_printf(MSG_DEBUG, 2134 "nl80211: New sched scan results available"); 2135 send_scan_event(drv, 0, tb); 2136 break; 2137 case NL80211_CMD_SCAN_ABORTED: 2138 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted"); 2139 /* 2140 * Need to indicate that scan results are available in order 2141 * not to make wpa_supplicant stop its scanning. 2142 */ 2143 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 2144 drv->ctx); 2145 send_scan_event(drv, 1, tb); 2146 break; 2147 case NL80211_CMD_AUTHENTICATE: 2148 case NL80211_CMD_ASSOCIATE: 2149 case NL80211_CMD_DEAUTHENTICATE: 2150 case NL80211_CMD_DISASSOCIATE: 2151 case NL80211_CMD_FRAME_TX_STATUS: 2152 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 2153 case NL80211_CMD_UNPROT_DISASSOCIATE: 2154 mlme_event(drv, cmd, tb[NL80211_ATTR_FRAME], 2155 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 2156 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 2157 tb[NL80211_ATTR_COOKIE], 2158 tb[NL80211_ATTR_RX_SIGNAL_DBM]); 2159 break; 2160 case NL80211_CMD_CONNECT: 2161 case NL80211_CMD_ROAM: 2162 mlme_event_connect(drv, cmd, 2163 tb[NL80211_ATTR_STATUS_CODE], 2164 tb[NL80211_ATTR_MAC], 2165 tb[NL80211_ATTR_REQ_IE], 2166 tb[NL80211_ATTR_RESP_IE]); 2167 break; 2168 case NL80211_CMD_CH_SWITCH_NOTIFY: 2169 mlme_event_ch_switch(drv, tb[NL80211_ATTR_WIPHY_FREQ], 2170 tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 2171 break; 2172 case NL80211_CMD_DISCONNECT: 2173 mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE], 2174 tb[NL80211_ATTR_MAC], 2175 tb[NL80211_ATTR_DISCONNECTED_BY_AP]); 2176 break; 2177 case NL80211_CMD_MICHAEL_MIC_FAILURE: 2178 mlme_event_michael_mic_failure(drv, tb); 2179 break; 2180 case NL80211_CMD_JOIN_IBSS: 2181 mlme_event_join_ibss(drv, tb); 2182 break; 2183 case NL80211_CMD_REMAIN_ON_CHANNEL: 2184 mlme_event_remain_on_channel(drv, 0, tb); 2185 break; 2186 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL: 2187 mlme_event_remain_on_channel(drv, 1, tb); 2188 break; 2189 case NL80211_CMD_NOTIFY_CQM: 2190 nl80211_cqm_event(drv, tb); 2191 break; 2192 case NL80211_CMD_REG_CHANGE: 2193 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change"); 2194 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 2195 NULL); 2196 break; 2197 case NL80211_CMD_REG_BEACON_HINT: 2198 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint"); 2199 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 2200 NULL); 2201 break; 2202 case NL80211_CMD_NEW_STATION: 2203 nl80211_new_station_event(drv, tb); 2204 break; 2205 case NL80211_CMD_DEL_STATION: 2206 nl80211_del_station_event(drv, tb); 2207 break; 2208 case NL80211_CMD_SET_REKEY_OFFLOAD: 2209 nl80211_rekey_offload_event(drv, tb); 2210 break; 2211 case NL80211_CMD_PMKSA_CANDIDATE: 2212 nl80211_pmksa_candidate_event(drv, tb); 2213 break; 2214 case NL80211_CMD_PROBE_CLIENT: 2215 nl80211_client_probe_event(drv, tb); 2216 break; 2217 default: 2218 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event " 2219 "(cmd=%d)", cmd); 2220 break; 2221 } 2222} 2223 2224 2225static int process_drv_event(struct nl_msg *msg, void *arg) 2226{ 2227 struct wpa_driver_nl80211_data *drv = arg; 2228 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2229 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2230 2231 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2232 genlmsg_attrlen(gnlh, 0), NULL); 2233 2234 if (tb[NL80211_ATTR_IFINDEX]) { 2235 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2236 if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) { 2237 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)" 2238 " for foreign interface (ifindex %d)", 2239 gnlh->cmd, ifindex); 2240 return NL_SKIP; 2241 } 2242 } 2243 2244 do_process_drv_event(drv, gnlh->cmd, tb); 2245 return NL_SKIP; 2246} 2247 2248 2249static int process_global_event(struct nl_msg *msg, void *arg) 2250{ 2251 struct nl80211_global *global = arg; 2252 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2253 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2254 struct wpa_driver_nl80211_data *drv, *tmp; 2255 int ifidx = -1; 2256 2257 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2258 genlmsg_attrlen(gnlh, 0), NULL); 2259 2260 if (tb[NL80211_ATTR_IFINDEX]) 2261 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2262 2263 dl_list_for_each_safe(drv, tmp, &global->interfaces, 2264 struct wpa_driver_nl80211_data, list) { 2265 if (ifidx == -1 || ifidx == drv->ifindex || 2266 have_ifidx(drv, ifidx)) 2267 do_process_drv_event(drv, gnlh->cmd, tb); 2268 } 2269 2270 return NL_SKIP; 2271} 2272 2273 2274static int process_bss_event(struct nl_msg *msg, void *arg) 2275{ 2276 struct i802_bss *bss = arg; 2277 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2278 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2279 2280 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2281 genlmsg_attrlen(gnlh, 0), NULL); 2282 2283 switch (gnlh->cmd) { 2284 case NL80211_CMD_FRAME: 2285 case NL80211_CMD_FRAME_TX_STATUS: 2286 mlme_event(bss->drv, gnlh->cmd, tb[NL80211_ATTR_FRAME], 2287 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 2288 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 2289 tb[NL80211_ATTR_COOKIE], 2290 tb[NL80211_ATTR_RX_SIGNAL_DBM]); 2291 break; 2292 case NL80211_CMD_UNEXPECTED_FRAME: 2293 nl80211_spurious_frame(bss, tb, 0); 2294 break; 2295 case NL80211_CMD_UNEXPECTED_4ADDR_FRAME: 2296 nl80211_spurious_frame(bss, tb, 1); 2297 break; 2298 default: 2299 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event " 2300 "(cmd=%d)", gnlh->cmd); 2301 break; 2302 } 2303 2304 return NL_SKIP; 2305} 2306 2307 2308static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx, 2309 void *handle) 2310{ 2311 struct nl_cb *cb = eloop_ctx; 2312 2313 wpa_printf(MSG_DEBUG, "nl80211: Event message available"); 2314 2315 nl_recvmsgs(handle, cb); 2316} 2317 2318 2319/** 2320 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain 2321 * @priv: driver_nl80211 private data 2322 * @alpha2_arg: country to which to switch to 2323 * Returns: 0 on success, -1 on failure 2324 * 2325 * This asks nl80211 to set the regulatory domain for given 2326 * country ISO / IEC alpha2. 2327 */ 2328static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg) 2329{ 2330 struct i802_bss *bss = priv; 2331 struct wpa_driver_nl80211_data *drv = bss->drv; 2332 char alpha2[3]; 2333 struct nl_msg *msg; 2334 2335 msg = nlmsg_alloc(); 2336 if (!msg) 2337 return -ENOMEM; 2338 2339 alpha2[0] = alpha2_arg[0]; 2340 alpha2[1] = alpha2_arg[1]; 2341 alpha2[2] = '\0'; 2342 2343 nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG); 2344 2345 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2); 2346 if (send_and_recv_msgs(drv, msg, NULL, NULL)) 2347 return -EINVAL; 2348 return 0; 2349nla_put_failure: 2350 nlmsg_free(msg); 2351 return -EINVAL; 2352} 2353 2354 2355struct wiphy_info_data { 2356 struct wpa_driver_capa *capa; 2357 2358 unsigned int error:1; 2359 unsigned int device_ap_sme:1; 2360 unsigned int poll_command_supported:1; 2361 unsigned int data_tx_status:1; 2362 unsigned int monitor_supported:1; 2363}; 2364 2365 2366static unsigned int probe_resp_offload_support(int supp_protocols) 2367{ 2368 unsigned int prot = 0; 2369 2370 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS) 2371 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS; 2372 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2) 2373 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2; 2374 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P) 2375 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P; 2376 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U) 2377 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING; 2378 2379 return prot; 2380} 2381 2382 2383static int wiphy_info_handler(struct nl_msg *msg, void *arg) 2384{ 2385 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2386 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2387 struct wiphy_info_data *info = arg; 2388 int p2p_go_supported = 0, p2p_client_supported = 0; 2389 int p2p_concurrent = 0; 2390 int auth_supported = 0, connect_supported = 0; 2391 struct wpa_driver_capa *capa = info->capa; 2392 static struct nla_policy 2393 iface_combination_policy[NUM_NL80211_IFACE_COMB] = { 2394 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED }, 2395 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 }, 2396 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG }, 2397 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 }, 2398 }, 2399 iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = { 2400 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED }, 2401 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 }, 2402 }; 2403 2404 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2405 genlmsg_attrlen(gnlh, 0), NULL); 2406 2407 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]) 2408 capa->max_scan_ssids = 2409 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]); 2410 2411 if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]) 2412 capa->max_sched_scan_ssids = 2413 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]); 2414 2415 if (tb[NL80211_ATTR_MAX_MATCH_SETS]) 2416 capa->max_match_sets = 2417 nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]); 2418 2419 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) { 2420 struct nlattr *nl_mode; 2421 int i; 2422 nla_for_each_nested(nl_mode, 2423 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) { 2424 switch (nla_type(nl_mode)) { 2425 case NL80211_IFTYPE_AP: 2426 capa->flags |= WPA_DRIVER_FLAGS_AP; 2427 break; 2428 case NL80211_IFTYPE_P2P_GO: 2429 p2p_go_supported = 1; 2430 break; 2431 case NL80211_IFTYPE_P2P_CLIENT: 2432 p2p_client_supported = 1; 2433 break; 2434 case NL80211_IFTYPE_MONITOR: 2435 info->monitor_supported = 1; 2436 break; 2437 } 2438 } 2439 } 2440 2441 if (tb[NL80211_ATTR_INTERFACE_COMBINATIONS]) { 2442 struct nlattr *nl_combi; 2443 int rem_combi; 2444 2445 nla_for_each_nested(nl_combi, 2446 tb[NL80211_ATTR_INTERFACE_COMBINATIONS], 2447 rem_combi) { 2448 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB]; 2449 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT]; 2450 struct nlattr *nl_limit, *nl_mode; 2451 int err, rem_limit, rem_mode; 2452 int combination_has_p2p = 0, combination_has_mgd = 0; 2453 2454 err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB, 2455 nl_combi, 2456 iface_combination_policy); 2457 if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] || 2458 !tb_comb[NL80211_IFACE_COMB_MAXNUM] || 2459 !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) 2460 goto broken_combination; 2461 2462 nla_for_each_nested(nl_limit, 2463 tb_comb[NL80211_IFACE_COMB_LIMITS], 2464 rem_limit) { 2465 err = nla_parse_nested(tb_limit, 2466 MAX_NL80211_IFACE_LIMIT, 2467 nl_limit, 2468 iface_limit_policy); 2469 if (err || 2470 !tb_limit[NL80211_IFACE_LIMIT_TYPES]) 2471 goto broken_combination; 2472 2473 nla_for_each_nested( 2474 nl_mode, 2475 tb_limit[NL80211_IFACE_LIMIT_TYPES], 2476 rem_mode) { 2477 int ift = nla_type(nl_mode); 2478 if (ift == NL80211_IFTYPE_P2P_GO || 2479 ift == NL80211_IFTYPE_P2P_CLIENT) 2480 combination_has_p2p = 1; 2481 if (ift == NL80211_IFTYPE_STATION) 2482 combination_has_mgd = 1; 2483 } 2484 if (combination_has_p2p && combination_has_mgd) 2485 break; 2486 } 2487 2488 if (combination_has_p2p && combination_has_mgd) { 2489 p2p_concurrent = 1; 2490 break; 2491 } 2492 2493broken_combination: 2494 ; 2495 } 2496 } 2497 2498 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) { 2499 struct nlattr *nl_cmd; 2500 int i; 2501 2502 nla_for_each_nested(nl_cmd, 2503 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) { 2504 switch (nla_get_u32(nl_cmd)) { 2505 case NL80211_CMD_AUTHENTICATE: 2506 auth_supported = 1; 2507 break; 2508 case NL80211_CMD_CONNECT: 2509 connect_supported = 1; 2510 break; 2511 case NL80211_CMD_START_SCHED_SCAN: 2512 capa->sched_scan_supported = 1; 2513 break; 2514 case NL80211_CMD_PROBE_CLIENT: 2515 info->poll_command_supported = 1; 2516 break; 2517 } 2518 } 2519 } 2520 2521 if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) { 2522 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based " 2523 "off-channel TX"); 2524 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX; 2525 } 2526 2527 if (tb[NL80211_ATTR_ROAM_SUPPORT]) { 2528 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming"); 2529 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION; 2530 } 2531 2532 /* default to 5000 since early versions of mac80211 don't set it */ 2533 capa->max_remain_on_chan = 5000; 2534 2535 if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD]) 2536 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD; 2537 2538 if (tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]) 2539 capa->max_remain_on_chan = 2540 nla_get_u32(tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]); 2541 2542 if (auth_supported) 2543 capa->flags |= WPA_DRIVER_FLAGS_SME; 2544 else if (!connect_supported) { 2545 wpa_printf(MSG_INFO, "nl80211: Driver does not support " 2546 "authentication/association or connect commands"); 2547 info->error = 1; 2548 } 2549 2550 if (p2p_go_supported && p2p_client_supported) 2551 capa->flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE; 2552 if (p2p_concurrent) { 2553 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 2554 "interface (driver advertised support)"); 2555 capa->flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 2556 capa->flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 2557 } 2558 2559 if (tb[NL80211_ATTR_TDLS_SUPPORT]) { 2560 wpa_printf(MSG_DEBUG, "nl80211: TDLS supported"); 2561 capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT; 2562 2563 if (tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]) { 2564 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup"); 2565 capa->flags |= 2566 WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP; 2567 } 2568 } 2569 2570 if (tb[NL80211_ATTR_DEVICE_AP_SME]) 2571 info->device_ap_sme = 1; 2572 2573 if (tb[NL80211_ATTR_FEATURE_FLAGS]) { 2574 u32 flags = nla_get_u32(tb[NL80211_ATTR_FEATURE_FLAGS]); 2575 2576 if (flags & NL80211_FEATURE_SK_TX_STATUS) 2577 info->data_tx_status = 1; 2578 2579 if (flags & NL80211_FEATURE_INACTIVITY_TIMER) 2580 capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER; 2581 } 2582 2583 if (tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]) { 2584 int protocols = 2585 nla_get_u32(tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]); 2586 wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response " 2587 "offload in AP mode"); 2588 capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD; 2589 capa->probe_resp_offloads = 2590 probe_resp_offload_support(protocols); 2591 } 2592 2593 return NL_SKIP; 2594} 2595 2596 2597static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv, 2598 struct wiphy_info_data *info) 2599{ 2600 struct nl_msg *msg; 2601 2602 os_memset(info, 0, sizeof(*info)); 2603 info->capa = &drv->capa; 2604 2605 msg = nlmsg_alloc(); 2606 if (!msg) 2607 return -1; 2608 2609 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 2610 2611 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex); 2612 2613 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0) 2614 return 0; 2615 msg = NULL; 2616nla_put_failure: 2617 nlmsg_free(msg); 2618 return -1; 2619} 2620 2621 2622static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv) 2623{ 2624 struct wiphy_info_data info; 2625 if (wpa_driver_nl80211_get_info(drv, &info)) 2626 return -1; 2627 2628 if (info.error) 2629 return -1; 2630 2631 drv->has_capability = 1; 2632 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */ 2633 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA | 2634 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK | 2635 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | 2636 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK; 2637 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 | 2638 WPA_DRIVER_CAPA_ENC_WEP104 | 2639 WPA_DRIVER_CAPA_ENC_TKIP | 2640 WPA_DRIVER_CAPA_ENC_CCMP; 2641 drv->capa.auth = WPA_DRIVER_AUTH_OPEN | 2642 WPA_DRIVER_AUTH_SHARED | 2643 WPA_DRIVER_AUTH_LEAP; 2644 2645 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES; 2646 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE; 2647 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 2648 2649 if (!info.device_ap_sme) 2650 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS; 2651 2652 drv->device_ap_sme = info.device_ap_sme; 2653 drv->poll_command_supported = info.poll_command_supported; 2654 drv->data_tx_status = info.data_tx_status; 2655 2656#ifdef ANDROID_P2P 2657 if(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) { 2658 /* Driver is new enough to support monitorless mode*/ 2659 wpa_printf(MSG_DEBUG, "nl80211: Driver is new " 2660 "enough to support monitor-less mode"); 2661 drv->use_monitor = 0; 2662 } 2663#else 2664 /* 2665 * If poll command is supported mac80211 is new enough to 2666 * have everything we need to not need monitor interfaces. 2667 */ 2668 drv->use_monitor = !info.poll_command_supported; 2669#endif 2670 2671 if (drv->device_ap_sme && drv->use_monitor) { 2672 /* 2673 * Non-mac80211 drivers may not support monitor interface. 2674 * Make sure we do not get stuck with incorrect capability here 2675 * by explicitly testing this. 2676 */ 2677 if (!info.monitor_supported) { 2678 wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor " 2679 "with device_ap_sme since no monitor mode " 2680 "support detected"); 2681 drv->use_monitor = 0; 2682 } 2683 } 2684 2685 /* 2686 * If we aren't going to use monitor interfaces, but the 2687 * driver doesn't support data TX status, we won't get TX 2688 * status for EAPOL frames. 2689 */ 2690 if (!drv->use_monitor && !info.data_tx_status) 2691 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 2692 2693 return 0; 2694} 2695 2696 2697#ifdef ANDROID 2698static int android_genl_ctrl_resolve(struct nl_handle *handle, 2699 const char *name) 2700{ 2701 /* 2702 * Android ICS has very minimal genl_ctrl_resolve() implementation, so 2703 * need to work around that. 2704 */ 2705 struct nl_cache *cache = NULL; 2706 struct genl_family *nl80211 = NULL; 2707 int id = -1; 2708 2709 if (genl_ctrl_alloc_cache(handle, &cache) < 0) { 2710 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic " 2711 "netlink cache"); 2712 goto fail; 2713 } 2714 2715 nl80211 = genl_ctrl_search_by_name(cache, name); 2716 if (nl80211 == NULL) 2717 goto fail; 2718 2719 id = genl_family_get_id(nl80211); 2720 2721fail: 2722 if (nl80211) 2723 genl_family_put(nl80211); 2724 if (cache) 2725 nl_cache_free(cache); 2726 2727 return id; 2728} 2729#define genl_ctrl_resolve android_genl_ctrl_resolve 2730#endif /* ANDROID */ 2731 2732 2733static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global) 2734{ 2735 int ret; 2736 2737 global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 2738 if (global->nl_cb == NULL) { 2739 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 2740 "callbacks"); 2741 return -1; 2742 } 2743 2744 global->nl = nl_create_handle(global->nl_cb, "nl"); 2745 if (global->nl == NULL) 2746 goto err; 2747 2748 global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211"); 2749 if (global->nl80211_id < 0) { 2750 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not " 2751 "found"); 2752 goto err; 2753 } 2754 2755 global->nl_event = nl_create_handle(global->nl_cb, "event"); 2756 if (global->nl_event == NULL) 2757 goto err; 2758 2759 ret = nl_get_multicast_id(global, "nl80211", "scan"); 2760 if (ret >= 0) 2761 ret = nl_socket_add_membership(global->nl_event, ret); 2762 if (ret < 0) { 2763 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 2764 "membership for scan events: %d (%s)", 2765 ret, strerror(-ret)); 2766 goto err; 2767 } 2768 2769 ret = nl_get_multicast_id(global, "nl80211", "mlme"); 2770 if (ret >= 0) 2771 ret = nl_socket_add_membership(global->nl_event, ret); 2772 if (ret < 0) { 2773 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 2774 "membership for mlme events: %d (%s)", 2775 ret, strerror(-ret)); 2776 goto err; 2777 } 2778 2779 ret = nl_get_multicast_id(global, "nl80211", "regulatory"); 2780 if (ret >= 0) 2781 ret = nl_socket_add_membership(global->nl_event, ret); 2782 if (ret < 0) { 2783 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast " 2784 "membership for regulatory events: %d (%s)", 2785 ret, strerror(-ret)); 2786 /* Continue without regulatory events */ 2787 } 2788 2789 nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 2790 no_seq_check, NULL); 2791 nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 2792 process_global_event, global); 2793 2794 eloop_register_read_sock(nl_socket_get_fd(global->nl_event), 2795 wpa_driver_nl80211_event_receive, 2796 global->nl_cb, global->nl_event); 2797 2798 return 0; 2799 2800err: 2801 nl_destroy_handles(&global->nl_event); 2802 nl_destroy_handles(&global->nl); 2803 nl_cb_put(global->nl_cb); 2804 global->nl_cb = NULL; 2805 return -1; 2806} 2807 2808 2809static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv) 2810{ 2811 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 2812 if (!drv->nl_cb) { 2813 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct"); 2814 return -1; 2815 } 2816 2817 nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 2818 no_seq_check, NULL); 2819 nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 2820 process_drv_event, drv); 2821 2822 return 0; 2823} 2824 2825 2826static void wpa_driver_nl80211_rfkill_blocked(void *ctx) 2827{ 2828 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked"); 2829 /* 2830 * This may be for any interface; use ifdown event to disable 2831 * interface. 2832 */ 2833} 2834 2835 2836static void wpa_driver_nl80211_rfkill_unblocked(void *ctx) 2837{ 2838 struct wpa_driver_nl80211_data *drv = ctx; 2839 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked"); 2840 if (linux_set_iface_flags(drv->global->ioctl_sock, 2841 drv->first_bss.ifname, 1)) { 2842 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP " 2843 "after rfkill unblock"); 2844 return; 2845 } 2846 /* rtnetlink ifup handler will report interface as enabled */ 2847} 2848 2849 2850static void nl80211_get_phy_name(struct wpa_driver_nl80211_data *drv) 2851{ 2852 /* Find phy (radio) to which this interface belongs */ 2853 char buf[90], *pos; 2854 int f, rv; 2855 2856 drv->phyname[0] = '\0'; 2857 snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name", 2858 drv->first_bss.ifname); 2859 f = open(buf, O_RDONLY); 2860 if (f < 0) { 2861 wpa_printf(MSG_DEBUG, "Could not open file %s: %s", 2862 buf, strerror(errno)); 2863 return; 2864 } 2865 2866 rv = read(f, drv->phyname, sizeof(drv->phyname) - 1); 2867 close(f); 2868 if (rv < 0) { 2869 wpa_printf(MSG_DEBUG, "Could not read file %s: %s", 2870 buf, strerror(errno)); 2871 return; 2872 } 2873 2874 drv->phyname[rv] = '\0'; 2875 pos = os_strchr(drv->phyname, '\n'); 2876 if (pos) 2877 *pos = '\0'; 2878 wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s", 2879 drv->first_bss.ifname, drv->phyname); 2880} 2881 2882 2883static void wpa_driver_nl80211_handle_eapol_tx_status(int sock, 2884 void *eloop_ctx, 2885 void *handle) 2886{ 2887 struct wpa_driver_nl80211_data *drv = eloop_ctx; 2888 u8 data[2048]; 2889 struct msghdr msg; 2890 struct iovec entry; 2891 u8 control[512]; 2892 struct cmsghdr *cmsg; 2893 int res, found_ee = 0, found_wifi = 0, acked = 0; 2894 union wpa_event_data event; 2895 2896 memset(&msg, 0, sizeof(msg)); 2897 msg.msg_iov = &entry; 2898 msg.msg_iovlen = 1; 2899 entry.iov_base = data; 2900 entry.iov_len = sizeof(data); 2901 msg.msg_control = &control; 2902 msg.msg_controllen = sizeof(control); 2903 2904 res = recvmsg(sock, &msg, MSG_ERRQUEUE); 2905 /* if error or not fitting 802.3 header, return */ 2906 if (res < 14) 2907 return; 2908 2909 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) 2910 { 2911 if (cmsg->cmsg_level == SOL_SOCKET && 2912 cmsg->cmsg_type == SCM_WIFI_STATUS) { 2913 int *ack; 2914 2915 found_wifi = 1; 2916 ack = (void *)CMSG_DATA(cmsg); 2917 acked = *ack; 2918 } 2919 2920 if (cmsg->cmsg_level == SOL_PACKET && 2921 cmsg->cmsg_type == PACKET_TX_TIMESTAMP) { 2922 struct sock_extended_err *err = 2923 (struct sock_extended_err *)CMSG_DATA(cmsg); 2924 2925 if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS) 2926 found_ee = 1; 2927 } 2928 } 2929 2930 if (!found_ee || !found_wifi) 2931 return; 2932 2933 memset(&event, 0, sizeof(event)); 2934 event.eapol_tx_status.dst = data; 2935 event.eapol_tx_status.data = data + 14; 2936 event.eapol_tx_status.data_len = res - 14; 2937 event.eapol_tx_status.ack = acked; 2938 wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event); 2939} 2940 2941 2942static int nl80211_init_bss(struct i802_bss *bss) 2943{ 2944 bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 2945 if (!bss->nl_cb) 2946 return -1; 2947 2948 nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 2949 no_seq_check, NULL); 2950 nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 2951 process_bss_event, bss); 2952 2953 return 0; 2954} 2955 2956 2957static void nl80211_destroy_bss(struct i802_bss *bss) 2958{ 2959 nl_cb_put(bss->nl_cb); 2960 bss->nl_cb = NULL; 2961} 2962 2963 2964/** 2965 * wpa_driver_nl80211_init - Initialize nl80211 driver interface 2966 * @ctx: context to be used when calling wpa_supplicant functions, 2967 * e.g., wpa_supplicant_event() 2968 * @ifname: interface name, e.g., wlan0 2969 * @global_priv: private driver global data from global_init() 2970 * Returns: Pointer to private data, %NULL on failure 2971 */ 2972static void * wpa_driver_nl80211_init(void *ctx, const char *ifname, 2973 void *global_priv) 2974{ 2975 struct wpa_driver_nl80211_data *drv; 2976 struct rfkill_config *rcfg; 2977 struct i802_bss *bss; 2978 2979 if (global_priv == NULL) 2980 return NULL; 2981 drv = os_zalloc(sizeof(*drv)); 2982 if (drv == NULL) 2983 return NULL; 2984 drv->global = global_priv; 2985 drv->ctx = ctx; 2986 bss = &drv->first_bss; 2987 bss->drv = drv; 2988 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname)); 2989 drv->monitor_ifidx = -1; 2990 drv->monitor_sock = -1; 2991 drv->eapol_tx_sock = -1; 2992 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 2993 2994 if (wpa_driver_nl80211_init_nl(drv)) { 2995 os_free(drv); 2996 return NULL; 2997 } 2998 2999 if (nl80211_init_bss(bss)) 3000 goto failed; 3001 3002 nl80211_get_phy_name(drv); 3003 3004 rcfg = os_zalloc(sizeof(*rcfg)); 3005 if (rcfg == NULL) 3006 goto failed; 3007 rcfg->ctx = drv; 3008 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname)); 3009 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked; 3010 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked; 3011 drv->rfkill = rfkill_init(rcfg); 3012 if (drv->rfkill == NULL) { 3013 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available"); 3014 os_free(rcfg); 3015 } 3016 3017 if (wpa_driver_nl80211_finish_drv_init(drv)) 3018 goto failed; 3019 3020 drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0); 3021 if (drv->eapol_tx_sock < 0) 3022 goto failed; 3023 3024 if (drv->data_tx_status) { 3025 int enabled = 1; 3026 3027 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS, 3028 &enabled, sizeof(enabled)) < 0) { 3029 wpa_printf(MSG_DEBUG, 3030 "nl80211: wifi status sockopt failed\n"); 3031 drv->data_tx_status = 0; 3032 if (!drv->use_monitor) 3033 drv->capa.flags &= 3034 ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 3035 } else { 3036 eloop_register_read_sock(drv->eapol_tx_sock, 3037 wpa_driver_nl80211_handle_eapol_tx_status, 3038 drv, NULL); 3039 } 3040 } 3041 3042 if (drv->global) { 3043 dl_list_add(&drv->global->interfaces, &drv->list); 3044 drv->in_interface_list = 1; 3045 } 3046 3047 return bss; 3048 3049failed: 3050 wpa_driver_nl80211_deinit(bss); 3051 return NULL; 3052} 3053 3054 3055static int nl80211_register_frame(struct i802_bss *bss, 3056 struct nl_handle *nl_handle, 3057 u16 type, const u8 *match, size_t match_len) 3058{ 3059 struct wpa_driver_nl80211_data *drv = bss->drv; 3060 struct nl_msg *msg; 3061 int ret = -1; 3062 3063 msg = nlmsg_alloc(); 3064 if (!msg) 3065 return -1; 3066 3067 wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x nl_handle=%p", 3068 type, nl_handle); 3069 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 3070 match, match_len); 3071 3072 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION); 3073 3074 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 3075 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type); 3076 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match); 3077 3078 ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL); 3079 msg = NULL; 3080 if (ret) { 3081 wpa_printf(MSG_DEBUG, "nl80211: Register frame command " 3082 "failed (type=%u): ret=%d (%s)", 3083 type, ret, strerror(-ret)); 3084 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 3085 match, match_len); 3086 goto nla_put_failure; 3087 } 3088 ret = 0; 3089nla_put_failure: 3090 nlmsg_free(msg); 3091 return ret; 3092} 3093 3094 3095static int nl80211_alloc_mgmt_handle(struct i802_bss *bss) 3096{ 3097 struct wpa_driver_nl80211_data *drv = bss->drv; 3098 3099 if (bss->nl_mgmt) { 3100 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting " 3101 "already on! (nl_mgmt=%p)", bss->nl_mgmt); 3102 return -1; 3103 } 3104 3105 bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt"); 3106 if (bss->nl_mgmt == NULL) 3107 return -1; 3108 3109 eloop_register_read_sock(nl_socket_get_fd(bss->nl_mgmt), 3110 wpa_driver_nl80211_event_receive, bss->nl_cb, 3111 bss->nl_mgmt); 3112 3113 return 0; 3114} 3115 3116 3117static int nl80211_register_action_frame(struct i802_bss *bss, 3118 const u8 *match, size_t match_len) 3119{ 3120 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4); 3121 return nl80211_register_frame(bss, bss->nl_mgmt, 3122 type, match, match_len); 3123} 3124 3125 3126static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss) 3127{ 3128 struct wpa_driver_nl80211_data *drv = bss->drv; 3129 3130 if (nl80211_alloc_mgmt_handle(bss)) 3131 return -1; 3132 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP " 3133 "handle %p", bss->nl_mgmt); 3134 3135#if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING) 3136 /* GAS Initial Request */ 3137 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0) 3138 return -1; 3139 /* GAS Initial Response */ 3140 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0) 3141 return -1; 3142 /* GAS Comeback Request */ 3143 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0) 3144 return -1; 3145 /* GAS Comeback Response */ 3146 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0) 3147 return -1; 3148#endif /* CONFIG_P2P || CONFIG_INTERWORKING */ 3149#ifdef CONFIG_P2P 3150 /* P2P Public Action */ 3151 if (nl80211_register_action_frame(bss, 3152 (u8 *) "\x04\x09\x50\x6f\x9a\x09", 3153 6) < 0) 3154 return -1; 3155 /* P2P Action */ 3156 if (nl80211_register_action_frame(bss, 3157 (u8 *) "\x7f\x50\x6f\x9a\x09", 3158 5) < 0) 3159 return -1; 3160#endif /* CONFIG_P2P */ 3161#ifdef CONFIG_IEEE80211W 3162 /* SA Query Response */ 3163 if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0) 3164 return -1; 3165#endif /* CONFIG_IEEE80211W */ 3166#ifdef CONFIG_TDLS 3167 if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) { 3168 /* TDLS Discovery Response */ 3169 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) < 3170 0) 3171 return -1; 3172 } 3173#endif /* CONFIG_TDLS */ 3174 3175 /* FT Action frames */ 3176 if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0) 3177 return -1; 3178 else 3179 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT | 3180 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK; 3181 3182 /* WNM - BSS Transition Management Request */ 3183 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0) 3184 return -1; 3185 3186 return 0; 3187} 3188 3189 3190static int nl80211_register_spurious_class3(struct i802_bss *bss) 3191{ 3192 struct wpa_driver_nl80211_data *drv = bss->drv; 3193 struct nl_msg *msg; 3194 int ret = -1; 3195 3196 msg = nlmsg_alloc(); 3197 if (!msg) 3198 return -1; 3199 3200 nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME); 3201 3202 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 3203 3204 ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL); 3205 msg = NULL; 3206 if (ret) { 3207 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 " 3208 "failed: ret=%d (%s)", 3209 ret, strerror(-ret)); 3210 goto nla_put_failure; 3211 } 3212 ret = 0; 3213nla_put_failure: 3214 nlmsg_free(msg); 3215 return ret; 3216} 3217 3218 3219static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss) 3220{ 3221 static const int stypes[] = { 3222 WLAN_FC_STYPE_AUTH, 3223 WLAN_FC_STYPE_ASSOC_REQ, 3224 WLAN_FC_STYPE_REASSOC_REQ, 3225 WLAN_FC_STYPE_DISASSOC, 3226 WLAN_FC_STYPE_DEAUTH, 3227 WLAN_FC_STYPE_ACTION, 3228 WLAN_FC_STYPE_PROBE_REQ, 3229/* Beacon doesn't work as mac80211 doesn't currently allow 3230 * it, but it wouldn't really be the right thing anyway as 3231 * it isn't per interface ... maybe just dump the scan 3232 * results periodically for OLBC? 3233 */ 3234// WLAN_FC_STYPE_BEACON, 3235 }; 3236 unsigned int i; 3237 3238 if (nl80211_alloc_mgmt_handle(bss)) 3239 return -1; 3240 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 3241 "handle %p", bss->nl_mgmt); 3242 3243 for (i = 0; i < sizeof(stypes) / sizeof(stypes[0]); i++) { 3244 if (nl80211_register_frame(bss, bss->nl_mgmt, 3245 (WLAN_FC_TYPE_MGMT << 2) | 3246 (stypes[i] << 4), 3247 NULL, 0) < 0) { 3248 goto out_err; 3249 } 3250 } 3251 3252 if (nl80211_register_spurious_class3(bss)) 3253 goto out_err; 3254 3255 if (nl80211_get_wiphy_data_ap(bss) == NULL) 3256 goto out_err; 3257 3258 return 0; 3259 3260out_err: 3261 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3262 nl_destroy_handles(&bss->nl_mgmt); 3263 return -1; 3264} 3265 3266 3267static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss) 3268{ 3269 if (nl80211_alloc_mgmt_handle(bss)) 3270 return -1; 3271 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 3272 "handle %p (device SME)", bss->nl_mgmt); 3273 3274 if (nl80211_register_frame(bss, bss->nl_mgmt, 3275 (WLAN_FC_TYPE_MGMT << 2) | 3276 (WLAN_FC_STYPE_ACTION << 4), 3277 NULL, 0) < 0) 3278 goto out_err; 3279 3280 return 0; 3281 3282out_err: 3283 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3284 nl_destroy_handles(&bss->nl_mgmt); 3285 return -1; 3286} 3287 3288 3289static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason) 3290{ 3291 if (bss->nl_mgmt == NULL) 3292 return; 3293 wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p " 3294 "(%s)", bss->nl_mgmt, reason); 3295 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3296 nl_destroy_handles(&bss->nl_mgmt); 3297 3298 nl80211_put_wiphy_data_ap(bss); 3299} 3300 3301 3302static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx) 3303{ 3304 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL); 3305} 3306 3307 3308static int 3309wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv) 3310{ 3311 struct i802_bss *bss = &drv->first_bss; 3312 int send_rfkill_event = 0; 3313 3314 drv->ifindex = if_nametoindex(bss->ifname); 3315 drv->first_bss.ifindex = drv->ifindex; 3316 3317#ifndef HOSTAPD 3318 /* 3319 * Make sure the interface starts up in station mode unless this is a 3320 * dynamically added interface (e.g., P2P) that was already configured 3321 * with proper iftype. 3322 */ 3323 if (drv->ifindex != drv->global->if_add_ifindex && 3324 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION) < 0) { 3325 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver to " 3326 "use managed mode"); 3327 return -1; 3328 } 3329 3330 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { 3331 if (rfkill_is_blocked(drv->rfkill)) { 3332 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable " 3333 "interface '%s' due to rfkill", 3334 bss->ifname); 3335 drv->if_disabled = 1; 3336 send_rfkill_event = 1; 3337 } else { 3338 wpa_printf(MSG_ERROR, "nl80211: Could not set " 3339 "interface '%s' UP", bss->ifname); 3340 return -1; 3341 } 3342 } 3343 3344 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 3345 1, IF_OPER_DORMANT); 3346#endif /* HOSTAPD */ 3347 3348 if (wpa_driver_nl80211_capa(drv)) 3349 return -1; 3350 3351 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 3352 bss->addr)) 3353 return -1; 3354 3355 if (send_rfkill_event) { 3356 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill, 3357 drv, drv->ctx); 3358 } 3359 3360 return 0; 3361} 3362 3363 3364static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv) 3365{ 3366 struct nl_msg *msg; 3367 3368 msg = nlmsg_alloc(); 3369 if (!msg) 3370 return -ENOMEM; 3371 3372 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON); 3373 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3374 3375 return send_and_recv_msgs(drv, msg, NULL, NULL); 3376 nla_put_failure: 3377 nlmsg_free(msg); 3378 return -ENOBUFS; 3379} 3380 3381 3382/** 3383 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface 3384 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init() 3385 * 3386 * Shut down driver interface and processing of driver events. Free 3387 * private data buffer if one was allocated in wpa_driver_nl80211_init(). 3388 */ 3389static void wpa_driver_nl80211_deinit(void *priv) 3390{ 3391 struct i802_bss *bss = priv; 3392 struct wpa_driver_nl80211_data *drv = bss->drv; 3393 3394 bss->in_deinit = 1; 3395 if (drv->data_tx_status) 3396 eloop_unregister_read_sock(drv->eapol_tx_sock); 3397 if (drv->eapol_tx_sock >= 0) 3398 close(drv->eapol_tx_sock); 3399 3400 if (bss->nl_preq) 3401 wpa_driver_nl80211_probe_req_report(bss, 0); 3402 if (bss->added_if_into_bridge) { 3403 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 3404 bss->ifname) < 0) 3405 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 3406 "interface %s from bridge %s: %s", 3407 bss->ifname, bss->brname, strerror(errno)); 3408 } 3409 if (bss->added_bridge) { 3410 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 3411 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 3412 "bridge %s: %s", 3413 bss->brname, strerror(errno)); 3414 } 3415 3416 nl80211_remove_monitor_interface(drv); 3417 3418 if (is_ap_interface(drv->nlmode)) 3419 wpa_driver_nl80211_del_beacon(drv); 3420 3421#ifdef HOSTAPD 3422 if (drv->last_freq_ht) { 3423 /* Clear HT flags from the driver */ 3424 struct hostapd_freq_params freq; 3425 os_memset(&freq, 0, sizeof(freq)); 3426 freq.freq = drv->last_freq; 3427 i802_set_freq(priv, &freq); 3428 } 3429 3430 if (drv->eapol_sock >= 0) { 3431 eloop_unregister_read_sock(drv->eapol_sock); 3432 close(drv->eapol_sock); 3433 } 3434 3435 if (drv->if_indices != drv->default_if_indices) 3436 os_free(drv->if_indices); 3437#endif /* HOSTAPD */ 3438 3439 if (drv->disabled_11b_rates) 3440 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 3441 3442 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0, 3443 IF_OPER_UP); 3444 rfkill_deinit(drv->rfkill); 3445 3446 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 3447 3448 (void) linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0); 3449 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION); 3450 nl80211_mgmt_unsubscribe(bss, "deinit"); 3451 3452 nl_cb_put(drv->nl_cb); 3453 3454 nl80211_destroy_bss(&drv->first_bss); 3455 3456 os_free(drv->filter_ssids); 3457 3458 os_free(drv->auth_ie); 3459 3460 if (drv->in_interface_list) 3461 dl_list_del(&drv->list); 3462 3463 os_free(drv); 3464} 3465 3466 3467/** 3468 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion 3469 * @eloop_ctx: Driver private data 3470 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init() 3471 * 3472 * This function can be used as registered timeout when starting a scan to 3473 * generate a scan completed event if the driver does not report this. 3474 */ 3475static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx) 3476{ 3477 struct wpa_driver_nl80211_data *drv = eloop_ctx; 3478 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) { 3479 wpa_driver_nl80211_set_mode(&drv->first_bss, 3480 drv->ap_scan_as_station); 3481 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 3482 } 3483 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results"); 3484 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL); 3485} 3486 3487 3488/** 3489 * wpa_driver_nl80211_scan - Request the driver to initiate scan 3490 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 3491 * @params: Scan parameters 3492 * Returns: 0 on success, -1 on failure 3493 */ 3494static int wpa_driver_nl80211_scan(void *priv, 3495 struct wpa_driver_scan_params *params) 3496{ 3497 struct i802_bss *bss = priv; 3498 struct wpa_driver_nl80211_data *drv = bss->drv; 3499 int ret = 0, timeout; 3500 struct nl_msg *msg, *ssids, *freqs, *rates; 3501 size_t i; 3502 3503 drv->scan_for_auth = 0; 3504 3505 msg = nlmsg_alloc(); 3506 ssids = nlmsg_alloc(); 3507 freqs = nlmsg_alloc(); 3508 rates = nlmsg_alloc(); 3509 if (!msg || !ssids || !freqs || !rates) { 3510 nlmsg_free(msg); 3511 nlmsg_free(ssids); 3512 nlmsg_free(freqs); 3513 nlmsg_free(rates); 3514 return -1; 3515 } 3516 3517 os_free(drv->filter_ssids); 3518 drv->filter_ssids = params->filter_ssids; 3519 params->filter_ssids = NULL; 3520 drv->num_filter_ssids = params->num_filter_ssids; 3521 3522 nl80211_cmd(drv, msg, 0, NL80211_CMD_TRIGGER_SCAN); 3523 3524 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3525 3526 for (i = 0; i < params->num_ssids; i++) { 3527 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID", 3528 params->ssids[i].ssid, 3529 params->ssids[i].ssid_len); 3530 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len, 3531 params->ssids[i].ssid); 3532 } 3533 if (params->num_ssids) 3534 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids); 3535 3536 if (params->extra_ies) { 3537 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs", 3538 params->extra_ies, params->extra_ies_len); 3539 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len, 3540 params->extra_ies); 3541 } 3542 3543 if (params->freqs) { 3544 for (i = 0; params->freqs[i]; i++) { 3545 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u " 3546 "MHz", params->freqs[i]); 3547 NLA_PUT_U32(freqs, i + 1, params->freqs[i]); 3548 } 3549 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs); 3550 } 3551 3552 if (params->p2p_probe) { 3553 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates"); 3554 3555 /* 3556 * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates 3557 * by masking out everything else apart from the OFDM rates 6, 3558 * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz 3559 * rates are left enabled. 3560 */ 3561 NLA_PUT(rates, NL80211_BAND_2GHZ, 8, 3562 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 3563 nla_put_nested(msg, NL80211_ATTR_SCAN_SUPP_RATES, rates); 3564 3565 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 3566 } 3567 3568 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3569 msg = NULL; 3570 if (ret) { 3571 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d " 3572 "(%s)", ret, strerror(-ret)); 3573#ifdef HOSTAPD 3574 if (is_ap_interface(drv->nlmode)) { 3575 /* 3576 * mac80211 does not allow scan requests in AP mode, so 3577 * try to do this in station mode. 3578 */ 3579 if (wpa_driver_nl80211_set_mode( 3580 bss, NL80211_IFTYPE_STATION)) 3581 goto nla_put_failure; 3582 3583 if (wpa_driver_nl80211_scan(drv, params)) { 3584 wpa_driver_nl80211_set_mode(bss, drv->nlmode); 3585 goto nla_put_failure; 3586 } 3587 3588 /* Restore AP mode when processing scan results */ 3589 drv->ap_scan_as_station = drv->nlmode; 3590 ret = 0; 3591 } else 3592 goto nla_put_failure; 3593#else /* HOSTAPD */ 3594 goto nla_put_failure; 3595#endif /* HOSTAPD */ 3596 } 3597 3598 /* Not all drivers generate "scan completed" wireless event, so try to 3599 * read results after a timeout. */ 3600 timeout = 10; 3601 if (drv->scan_complete_events) { 3602 /* 3603 * The driver seems to deliver events to notify when scan is 3604 * complete, so use longer timeout to avoid race conditions 3605 * with scanning and following association request. 3606 */ 3607 timeout = 30; 3608 } 3609 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d " 3610 "seconds", ret, timeout); 3611 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 3612 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout, 3613 drv, drv->ctx); 3614 3615nla_put_failure: 3616 nlmsg_free(ssids); 3617 nlmsg_free(msg); 3618 nlmsg_free(freqs); 3619 nlmsg_free(rates); 3620 return ret; 3621} 3622 3623 3624/** 3625 * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan 3626 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 3627 * @params: Scan parameters 3628 * @interval: Interval between scan cycles in milliseconds 3629 * Returns: 0 on success, -1 on failure or if not supported 3630 */ 3631static int wpa_driver_nl80211_sched_scan(void *priv, 3632 struct wpa_driver_scan_params *params, 3633 u32 interval) 3634{ 3635 struct i802_bss *bss = priv; 3636 struct wpa_driver_nl80211_data *drv = bss->drv; 3637 int ret = 0; 3638 struct nl_msg *msg, *ssids, *freqs, *match_set_ssid, *match_sets; 3639 size_t i; 3640 3641#ifdef ANDROID 3642 if (!drv->capa.sched_scan_supported) 3643 return android_pno_start(bss, params); 3644#endif /* ANDROID */ 3645 3646 msg = nlmsg_alloc(); 3647 ssids = nlmsg_alloc(); 3648 freqs = nlmsg_alloc(); 3649 if (!msg || !ssids || !freqs) { 3650 nlmsg_free(msg); 3651 nlmsg_free(ssids); 3652 nlmsg_free(freqs); 3653 return -1; 3654 } 3655 3656 os_free(drv->filter_ssids); 3657 drv->filter_ssids = params->filter_ssids; 3658 params->filter_ssids = NULL; 3659 drv->num_filter_ssids = params->num_filter_ssids; 3660 3661 nl80211_cmd(drv, msg, 0, NL80211_CMD_START_SCHED_SCAN); 3662 3663 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3664 3665 NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval); 3666 3667 if (drv->num_filter_ssids && 3668 (int) drv->num_filter_ssids <= drv->capa.max_match_sets) { 3669 match_sets = nlmsg_alloc(); 3670 3671 for (i = 0; i < drv->num_filter_ssids; i++) { 3672 wpa_hexdump_ascii(MSG_MSGDUMP, 3673 "nl80211: Sched scan filter SSID", 3674 drv->filter_ssids[i].ssid, 3675 drv->filter_ssids[i].ssid_len); 3676 3677 match_set_ssid = nlmsg_alloc(); 3678 nla_put(match_set_ssid, 3679 NL80211_ATTR_SCHED_SCAN_MATCH_SSID, 3680 drv->filter_ssids[i].ssid_len, 3681 drv->filter_ssids[i].ssid); 3682 3683 nla_put_nested(match_sets, i + 1, match_set_ssid); 3684 3685 nlmsg_free(match_set_ssid); 3686 } 3687 3688 nla_put_nested(msg, NL80211_ATTR_SCHED_SCAN_MATCH, 3689 match_sets); 3690 nlmsg_free(match_sets); 3691 } 3692 3693 for (i = 0; i < params->num_ssids; i++) { 3694 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Sched scan SSID", 3695 params->ssids[i].ssid, 3696 params->ssids[i].ssid_len); 3697 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len, 3698 params->ssids[i].ssid); 3699 } 3700 if (params->num_ssids) 3701 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids); 3702 3703 if (params->extra_ies) { 3704 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Sched scan extra IEs", 3705 params->extra_ies, params->extra_ies_len); 3706 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len, 3707 params->extra_ies); 3708 } 3709 3710 if (params->freqs) { 3711 for (i = 0; params->freqs[i]; i++) { 3712 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u " 3713 "MHz", params->freqs[i]); 3714 NLA_PUT_U32(freqs, i + 1, params->freqs[i]); 3715 } 3716 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs); 3717 } 3718 3719 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3720 3721 /* TODO: if we get an error here, we should fall back to normal scan */ 3722 3723 msg = NULL; 3724 if (ret) { 3725 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: " 3726 "ret=%d (%s)", ret, strerror(-ret)); 3727 goto nla_put_failure; 3728 } 3729 3730 wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - " 3731 "scan interval %d msec", ret, interval); 3732 3733nla_put_failure: 3734 nlmsg_free(ssids); 3735 nlmsg_free(msg); 3736 nlmsg_free(freqs); 3737 return ret; 3738} 3739 3740 3741/** 3742 * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan 3743 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 3744 * Returns: 0 on success, -1 on failure or if not supported 3745 */ 3746static int wpa_driver_nl80211_stop_sched_scan(void *priv) 3747{ 3748 struct i802_bss *bss = priv; 3749 struct wpa_driver_nl80211_data *drv = bss->drv; 3750 int ret = 0; 3751 struct nl_msg *msg; 3752 3753#ifdef ANDROID 3754 if (!drv->capa.sched_scan_supported) 3755 return android_pno_stop(bss); 3756#endif /* ANDROID */ 3757 3758 msg = nlmsg_alloc(); 3759 if (!msg) 3760 return -1; 3761 3762 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN); 3763 3764 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3765 3766 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3767 msg = NULL; 3768 if (ret) { 3769 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: " 3770 "ret=%d (%s)", ret, strerror(-ret)); 3771 goto nla_put_failure; 3772 } 3773 3774 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret); 3775 3776nla_put_failure: 3777 nlmsg_free(msg); 3778 return ret; 3779} 3780 3781 3782static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie) 3783{ 3784 const u8 *end, *pos; 3785 3786 if (ies == NULL) 3787 return NULL; 3788 3789 pos = ies; 3790 end = ies + ies_len; 3791 3792 while (pos + 1 < end) { 3793 if (pos + 2 + pos[1] > end) 3794 break; 3795 if (pos[0] == ie) 3796 return pos; 3797 pos += 2 + pos[1]; 3798 } 3799 3800 return NULL; 3801} 3802 3803 3804static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv, 3805 const u8 *ie, size_t ie_len) 3806{ 3807 const u8 *ssid; 3808 size_t i; 3809 3810 if (drv->filter_ssids == NULL) 3811 return 0; 3812 3813 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID); 3814 if (ssid == NULL) 3815 return 1; 3816 3817 for (i = 0; i < drv->num_filter_ssids; i++) { 3818 if (ssid[1] == drv->filter_ssids[i].ssid_len && 3819 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) == 3820 0) 3821 return 0; 3822 } 3823 3824 return 1; 3825} 3826 3827 3828static int bss_info_handler(struct nl_msg *msg, void *arg) 3829{ 3830 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 3831 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 3832 struct nlattr *bss[NL80211_BSS_MAX + 1]; 3833 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { 3834 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC }, 3835 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, 3836 [NL80211_BSS_TSF] = { .type = NLA_U64 }, 3837 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 }, 3838 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 }, 3839 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC }, 3840 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 }, 3841 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 }, 3842 [NL80211_BSS_STATUS] = { .type = NLA_U32 }, 3843 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 }, 3844 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC }, 3845 }; 3846 struct nl80211_bss_info_arg *_arg = arg; 3847 struct wpa_scan_results *res = _arg->res; 3848 struct wpa_scan_res **tmp; 3849 struct wpa_scan_res *r; 3850 const u8 *ie, *beacon_ie; 3851 size_t ie_len, beacon_ie_len; 3852 u8 *pos; 3853 size_t i; 3854 3855 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 3856 genlmsg_attrlen(gnlh, 0), NULL); 3857 if (!tb[NL80211_ATTR_BSS]) 3858 return NL_SKIP; 3859 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS], 3860 bss_policy)) 3861 return NL_SKIP; 3862 if (bss[NL80211_BSS_STATUS]) { 3863 enum nl80211_bss_status status; 3864 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 3865 if (status == NL80211_BSS_STATUS_ASSOCIATED && 3866 bss[NL80211_BSS_FREQUENCY]) { 3867 _arg->assoc_freq = 3868 nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 3869 wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz", 3870 _arg->assoc_freq); 3871 } 3872 if (status == NL80211_BSS_STATUS_ASSOCIATED && 3873 bss[NL80211_BSS_BSSID]) { 3874 os_memcpy(_arg->assoc_bssid, 3875 nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN); 3876 wpa_printf(MSG_DEBUG, "nl80211: Associated with " 3877 MACSTR, MAC2STR(_arg->assoc_bssid)); 3878 } 3879 } 3880 if (!res) 3881 return NL_SKIP; 3882 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) { 3883 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 3884 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 3885 } else { 3886 ie = NULL; 3887 ie_len = 0; 3888 } 3889 if (bss[NL80211_BSS_BEACON_IES]) { 3890 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]); 3891 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]); 3892 } else { 3893 beacon_ie = NULL; 3894 beacon_ie_len = 0; 3895 } 3896 3897 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie, 3898 ie ? ie_len : beacon_ie_len)) 3899 return NL_SKIP; 3900 3901 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len); 3902 if (r == NULL) 3903 return NL_SKIP; 3904 if (bss[NL80211_BSS_BSSID]) 3905 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]), 3906 ETH_ALEN); 3907 if (bss[NL80211_BSS_FREQUENCY]) 3908 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 3909 if (bss[NL80211_BSS_BEACON_INTERVAL]) 3910 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]); 3911 if (bss[NL80211_BSS_CAPABILITY]) 3912 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]); 3913 r->flags |= WPA_SCAN_NOISE_INVALID; 3914 if (bss[NL80211_BSS_SIGNAL_MBM]) { 3915 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]); 3916 r->level /= 100; /* mBm to dBm */ 3917 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID; 3918 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) { 3919 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]); 3920 r->flags |= WPA_SCAN_QUAL_INVALID; 3921 } else 3922 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID; 3923 if (bss[NL80211_BSS_TSF]) 3924 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]); 3925 if (bss[NL80211_BSS_SEEN_MS_AGO]) 3926 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]); 3927 r->ie_len = ie_len; 3928 pos = (u8 *) (r + 1); 3929 if (ie) { 3930 os_memcpy(pos, ie, ie_len); 3931 pos += ie_len; 3932 } 3933 r->beacon_ie_len = beacon_ie_len; 3934 if (beacon_ie) 3935 os_memcpy(pos, beacon_ie, beacon_ie_len); 3936 3937 if (bss[NL80211_BSS_STATUS]) { 3938 enum nl80211_bss_status status; 3939 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 3940 switch (status) { 3941 case NL80211_BSS_STATUS_AUTHENTICATED: 3942 r->flags |= WPA_SCAN_AUTHENTICATED; 3943 break; 3944 case NL80211_BSS_STATUS_ASSOCIATED: 3945 r->flags |= WPA_SCAN_ASSOCIATED; 3946 break; 3947 default: 3948 break; 3949 } 3950 } 3951 3952 /* 3953 * cfg80211 maintains separate BSS table entries for APs if the same 3954 * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does 3955 * not use frequency as a separate key in the BSS table, so filter out 3956 * duplicated entries. Prefer associated BSS entry in such a case in 3957 * order to get the correct frequency into the BSS table. 3958 */ 3959 for (i = 0; i < res->num; i++) { 3960 const u8 *s1, *s2; 3961 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0) 3962 continue; 3963 3964 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1), 3965 res->res[i]->ie_len, WLAN_EID_SSID); 3966 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID); 3967 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] || 3968 os_memcmp(s1, s2, 2 + s1[1]) != 0) 3969 continue; 3970 3971 /* Same BSSID,SSID was already included in scan results */ 3972 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result " 3973 "for " MACSTR, MAC2STR(r->bssid)); 3974 3975 if ((r->flags & WPA_SCAN_ASSOCIATED) && 3976 !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) { 3977 os_free(res->res[i]); 3978 res->res[i] = r; 3979 } else 3980 os_free(r); 3981 return NL_SKIP; 3982 } 3983 3984 tmp = os_realloc(res->res, 3985 (res->num + 1) * sizeof(struct wpa_scan_res *)); 3986 if (tmp == NULL) { 3987 os_free(r); 3988 return NL_SKIP; 3989 } 3990 tmp[res->num++] = r; 3991 res->res = tmp; 3992 3993 return NL_SKIP; 3994} 3995 3996 3997static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv, 3998 const u8 *addr) 3999{ 4000 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 4001 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state " 4002 "mismatch (" MACSTR ")", MAC2STR(addr)); 4003 wpa_driver_nl80211_mlme(drv, addr, 4004 NL80211_CMD_DEAUTHENTICATE, 4005 WLAN_REASON_PREV_AUTH_NOT_VALID, 1); 4006 } 4007} 4008 4009 4010static void wpa_driver_nl80211_check_bss_status( 4011 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res) 4012{ 4013 size_t i; 4014 4015 for (i = 0; i < res->num; i++) { 4016 struct wpa_scan_res *r = res->res[i]; 4017 if (r->flags & WPA_SCAN_AUTHENTICATED) { 4018 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 4019 "indicates BSS status with " MACSTR 4020 " as authenticated", 4021 MAC2STR(r->bssid)); 4022 if (is_sta_interface(drv->nlmode) && 4023 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 && 4024 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) != 4025 0) { 4026 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID" 4027 " in local state (auth=" MACSTR 4028 " assoc=" MACSTR ")", 4029 MAC2STR(drv->auth_bssid), 4030 MAC2STR(drv->bssid)); 4031 clear_state_mismatch(drv, r->bssid); 4032 } 4033 } 4034 4035 if (r->flags & WPA_SCAN_ASSOCIATED) { 4036 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 4037 "indicate BSS status with " MACSTR 4038 " as associated", 4039 MAC2STR(r->bssid)); 4040 if (is_sta_interface(drv->nlmode) && 4041 !drv->associated) { 4042 wpa_printf(MSG_DEBUG, "nl80211: Local state " 4043 "(not associated) does not match " 4044 "with BSS state"); 4045 clear_state_mismatch(drv, r->bssid); 4046 } else if (is_sta_interface(drv->nlmode) && 4047 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) != 4048 0) { 4049 wpa_printf(MSG_DEBUG, "nl80211: Local state " 4050 "(associated with " MACSTR ") does " 4051 "not match with BSS state", 4052 MAC2STR(drv->bssid)); 4053 clear_state_mismatch(drv, r->bssid); 4054 clear_state_mismatch(drv, drv->bssid); 4055 } 4056 } 4057 } 4058} 4059 4060 4061static struct wpa_scan_results * 4062nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv) 4063{ 4064 struct nl_msg *msg; 4065 struct wpa_scan_results *res; 4066 int ret; 4067 struct nl80211_bss_info_arg arg; 4068 4069 res = os_zalloc(sizeof(*res)); 4070 if (res == NULL) 4071 return NULL; 4072 msg = nlmsg_alloc(); 4073 if (!msg) 4074 goto nla_put_failure; 4075 4076 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 4077 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4078 4079 arg.drv = drv; 4080 arg.res = res; 4081 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 4082 msg = NULL; 4083 if (ret == 0) { 4084 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu " 4085 "BSSes)", (unsigned long) res->num); 4086 nl80211_get_noise_for_scan_results(drv, res); 4087 return res; 4088 } 4089 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 4090 "(%s)", ret, strerror(-ret)); 4091nla_put_failure: 4092 nlmsg_free(msg); 4093 wpa_scan_results_free(res); 4094 return NULL; 4095} 4096 4097 4098/** 4099 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results 4100 * @priv: Pointer to private wext data from wpa_driver_nl80211_init() 4101 * Returns: Scan results on success, -1 on failure 4102 */ 4103static struct wpa_scan_results * 4104wpa_driver_nl80211_get_scan_results(void *priv) 4105{ 4106 struct i802_bss *bss = priv; 4107 struct wpa_driver_nl80211_data *drv = bss->drv; 4108 struct wpa_scan_results *res; 4109 4110 res = nl80211_get_scan_results(drv); 4111 if (res) 4112 wpa_driver_nl80211_check_bss_status(drv, res); 4113 return res; 4114} 4115 4116 4117static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv) 4118{ 4119 struct wpa_scan_results *res; 4120 size_t i; 4121 4122 res = nl80211_get_scan_results(drv); 4123 if (res == NULL) { 4124 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results"); 4125 return; 4126 } 4127 4128 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump"); 4129 for (i = 0; i < res->num; i++) { 4130 struct wpa_scan_res *r = res->res[i]; 4131 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s", 4132 (int) i, (int) res->num, MAC2STR(r->bssid), 4133 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "", 4134 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : ""); 4135 } 4136 4137 wpa_scan_results_free(res); 4138} 4139 4140 4141static int wpa_driver_nl80211_set_key(const char *ifname, void *priv, 4142 enum wpa_alg alg, const u8 *addr, 4143 int key_idx, int set_tx, 4144 const u8 *seq, size_t seq_len, 4145 const u8 *key, size_t key_len) 4146{ 4147 struct i802_bss *bss = priv; 4148 struct wpa_driver_nl80211_data *drv = bss->drv; 4149 int ifindex = if_nametoindex(ifname); 4150 struct nl_msg *msg; 4151 int ret; 4152 4153 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d " 4154 "set_tx=%d seq_len=%lu key_len=%lu", 4155 __func__, ifindex, alg, addr, key_idx, set_tx, 4156 (unsigned long) seq_len, (unsigned long) key_len); 4157#ifdef CONFIG_TDLS 4158 if (key_idx == -1) 4159 key_idx = 0; 4160#endif /* CONFIG_TDLS */ 4161 4162 msg = nlmsg_alloc(); 4163 if (!msg) 4164 return -ENOMEM; 4165 4166 if (alg == WPA_ALG_NONE) { 4167 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY); 4168 } else { 4169 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY); 4170 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key); 4171 switch (alg) { 4172 case WPA_ALG_WEP: 4173 if (key_len == 5) 4174 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4175 WLAN_CIPHER_SUITE_WEP40); 4176 else 4177 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4178 WLAN_CIPHER_SUITE_WEP104); 4179 break; 4180 case WPA_ALG_TKIP: 4181 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4182 WLAN_CIPHER_SUITE_TKIP); 4183 break; 4184 case WPA_ALG_CCMP: 4185 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4186 WLAN_CIPHER_SUITE_CCMP); 4187 break; 4188 case WPA_ALG_IGTK: 4189 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4190 WLAN_CIPHER_SUITE_AES_CMAC); 4191 break; 4192 default: 4193 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 4194 "algorithm %d", __func__, alg); 4195 nlmsg_free(msg); 4196 return -1; 4197 } 4198 } 4199 4200 if (seq && seq_len) 4201 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq); 4202 4203 if (addr && !is_broadcast_ether_addr(addr)) { 4204 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr)); 4205 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 4206 4207 if (alg != WPA_ALG_WEP && key_idx && !set_tx) { 4208 wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK"); 4209 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, 4210 NL80211_KEYTYPE_GROUP); 4211 } 4212 } else if (addr && is_broadcast_ether_addr(addr)) { 4213 struct nl_msg *types; 4214 int err; 4215 wpa_printf(MSG_DEBUG, " broadcast key"); 4216 types = nlmsg_alloc(); 4217 if (!types) 4218 goto nla_put_failure; 4219 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 4220 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 4221 types); 4222 nlmsg_free(types); 4223 if (err) 4224 goto nla_put_failure; 4225 } 4226 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 4227 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 4228 4229 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4230 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE) 4231 ret = 0; 4232 if (ret) 4233 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)", 4234 ret, strerror(-ret)); 4235 4236 /* 4237 * If we failed or don't need to set the default TX key (below), 4238 * we're done here. 4239 */ 4240 if (ret || !set_tx || alg == WPA_ALG_NONE) 4241 return ret; 4242 if (is_ap_interface(drv->nlmode) && addr && 4243 !is_broadcast_ether_addr(addr)) 4244 return ret; 4245 4246 msg = nlmsg_alloc(); 4247 if (!msg) 4248 return -ENOMEM; 4249 4250 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY); 4251 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 4252 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 4253 if (alg == WPA_ALG_IGTK) 4254 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT); 4255 else 4256 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT); 4257 if (addr && is_broadcast_ether_addr(addr)) { 4258 struct nl_msg *types; 4259 int err; 4260 types = nlmsg_alloc(); 4261 if (!types) 4262 goto nla_put_failure; 4263 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 4264 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 4265 types); 4266 nlmsg_free(types); 4267 if (err) 4268 goto nla_put_failure; 4269 } else if (addr) { 4270 struct nl_msg *types; 4271 int err; 4272 types = nlmsg_alloc(); 4273 if (!types) 4274 goto nla_put_failure; 4275 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_UNICAST); 4276 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 4277 types); 4278 nlmsg_free(types); 4279 if (err) 4280 goto nla_put_failure; 4281 } 4282 4283 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4284 if (ret == -ENOENT) 4285 ret = 0; 4286 if (ret) 4287 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; " 4288 "err=%d %s)", ret, strerror(-ret)); 4289 return ret; 4290 4291nla_put_failure: 4292 nlmsg_free(msg); 4293 return -ENOBUFS; 4294} 4295 4296 4297static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg, 4298 int key_idx, int defkey, 4299 const u8 *seq, size_t seq_len, 4300 const u8 *key, size_t key_len) 4301{ 4302 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY); 4303 if (!key_attr) 4304 return -1; 4305 4306 if (defkey && alg == WPA_ALG_IGTK) 4307 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT); 4308 else if (defkey) 4309 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 4310 4311 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx); 4312 4313 switch (alg) { 4314 case WPA_ALG_WEP: 4315 if (key_len == 5) 4316 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4317 WLAN_CIPHER_SUITE_WEP40); 4318 else 4319 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4320 WLAN_CIPHER_SUITE_WEP104); 4321 break; 4322 case WPA_ALG_TKIP: 4323 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP); 4324 break; 4325 case WPA_ALG_CCMP: 4326 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP); 4327 break; 4328 case WPA_ALG_IGTK: 4329 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4330 WLAN_CIPHER_SUITE_AES_CMAC); 4331 break; 4332 default: 4333 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 4334 "algorithm %d", __func__, alg); 4335 return -1; 4336 } 4337 4338 if (seq && seq_len) 4339 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq); 4340 4341 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key); 4342 4343 nla_nest_end(msg, key_attr); 4344 4345 return 0; 4346 nla_put_failure: 4347 return -1; 4348} 4349 4350 4351static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params, 4352 struct nl_msg *msg) 4353{ 4354 int i, privacy = 0; 4355 struct nlattr *nl_keys, *nl_key; 4356 4357 for (i = 0; i < 4; i++) { 4358 if (!params->wep_key[i]) 4359 continue; 4360 privacy = 1; 4361 break; 4362 } 4363 if (params->wps == WPS_MODE_PRIVACY) 4364 privacy = 1; 4365 if (params->pairwise_suite && 4366 params->pairwise_suite != WPA_CIPHER_NONE) 4367 privacy = 1; 4368 4369 if (!privacy) 4370 return 0; 4371 4372 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 4373 4374 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS); 4375 if (!nl_keys) 4376 goto nla_put_failure; 4377 4378 for (i = 0; i < 4; i++) { 4379 if (!params->wep_key[i]) 4380 continue; 4381 4382 nl_key = nla_nest_start(msg, i); 4383 if (!nl_key) 4384 goto nla_put_failure; 4385 4386 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i], 4387 params->wep_key[i]); 4388 if (params->wep_key_len[i] == 5) 4389 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4390 WLAN_CIPHER_SUITE_WEP40); 4391 else 4392 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4393 WLAN_CIPHER_SUITE_WEP104); 4394 4395 NLA_PUT_U8(msg, NL80211_KEY_IDX, i); 4396 4397 if (i == params->wep_tx_keyidx) 4398 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 4399 4400 nla_nest_end(msg, nl_key); 4401 } 4402 nla_nest_end(msg, nl_keys); 4403 4404 return 0; 4405 4406nla_put_failure: 4407 return -ENOBUFS; 4408} 4409 4410 4411static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 4412 const u8 *addr, int cmd, u16 reason_code, 4413 int local_state_change) 4414{ 4415 int ret = -1; 4416 struct nl_msg *msg; 4417 4418 msg = nlmsg_alloc(); 4419 if (!msg) 4420 return -1; 4421 4422 nl80211_cmd(drv, msg, 0, cmd); 4423 4424 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4425 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code); 4426 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 4427 if (local_state_change) 4428 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 4429 4430 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4431 msg = NULL; 4432 if (ret) { 4433 wpa_dbg(drv->ctx, MSG_DEBUG, 4434 "nl80211: MLME command failed: reason=%u ret=%d (%s)", 4435 reason_code, ret, strerror(-ret)); 4436 goto nla_put_failure; 4437 } 4438 ret = 0; 4439 4440nla_put_failure: 4441 nlmsg_free(msg); 4442 return ret; 4443} 4444 4445 4446static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv, 4447 const u8 *addr, int reason_code) 4448{ 4449 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)", 4450 __func__, MAC2STR(addr), reason_code); 4451 drv->associated = 0; 4452 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT, 4453 reason_code, 0); 4454} 4455 4456 4457static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr, 4458 int reason_code) 4459{ 4460 struct i802_bss *bss = priv; 4461 struct wpa_driver_nl80211_data *drv = bss->drv; 4462 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) 4463 return wpa_driver_nl80211_disconnect(drv, addr, reason_code); 4464 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)", 4465 __func__, MAC2STR(addr), reason_code); 4466 drv->associated = 0; 4467 if (drv->nlmode == NL80211_IFTYPE_ADHOC) 4468 return nl80211_leave_ibss(drv); 4469 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE, 4470 reason_code, 0); 4471} 4472 4473 4474static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr, 4475 int reason_code) 4476{ 4477 struct i802_bss *bss = priv; 4478 struct wpa_driver_nl80211_data *drv = bss->drv; 4479 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) 4480 return wpa_driver_nl80211_disconnect(drv, addr, reason_code); 4481 wpa_printf(MSG_DEBUG, "%s", __func__); 4482 drv->associated = 0; 4483 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE, 4484 reason_code, 0); 4485} 4486 4487 4488static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv, 4489 struct wpa_driver_auth_params *params) 4490{ 4491 int i; 4492 4493 drv->auth_freq = params->freq; 4494 drv->auth_alg = params->auth_alg; 4495 drv->auth_wep_tx_keyidx = params->wep_tx_keyidx; 4496 drv->auth_local_state_change = params->local_state_change; 4497 drv->auth_p2p = params->p2p; 4498 4499 if (params->bssid) 4500 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN); 4501 else 4502 os_memset(drv->auth_bssid_, 0, ETH_ALEN); 4503 4504 if (params->ssid) { 4505 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len); 4506 drv->auth_ssid_len = params->ssid_len; 4507 } else 4508 drv->auth_ssid_len = 0; 4509 4510 4511 os_free(drv->auth_ie); 4512 drv->auth_ie = NULL; 4513 drv->auth_ie_len = 0; 4514 if (params->ie) { 4515 drv->auth_ie = os_malloc(params->ie_len); 4516 if (drv->auth_ie) { 4517 os_memcpy(drv->auth_ie, params->ie, params->ie_len); 4518 drv->auth_ie_len = params->ie_len; 4519 } 4520 } 4521 4522 for (i = 0; i < 4; i++) { 4523 if (params->wep_key[i] && params->wep_key_len[i] && 4524 params->wep_key_len[i] <= 16) { 4525 os_memcpy(drv->auth_wep_key[i], params->wep_key[i], 4526 params->wep_key_len[i]); 4527 drv->auth_wep_key_len[i] = params->wep_key_len[i]; 4528 } else 4529 drv->auth_wep_key_len[i] = 0; 4530 } 4531} 4532 4533 4534static int wpa_driver_nl80211_authenticate( 4535 void *priv, struct wpa_driver_auth_params *params) 4536{ 4537 struct i802_bss *bss = priv; 4538 struct wpa_driver_nl80211_data *drv = bss->drv; 4539 int ret = -1, i; 4540 struct nl_msg *msg; 4541 enum nl80211_auth_type type; 4542 enum nl80211_iftype nlmode; 4543 int count = 0; 4544 int is_retry; 4545 4546 is_retry = drv->retry_auth; 4547 drv->retry_auth = 0; 4548 4549 drv->associated = 0; 4550 os_memset(drv->auth_bssid, 0, ETH_ALEN); 4551 /* FIX: IBSS mode */ 4552 nlmode = params->p2p ? 4553 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 4554 if (drv->nlmode != nlmode && 4555 wpa_driver_nl80211_set_mode(priv, nlmode) < 0) 4556 return -1; 4557 4558retry: 4559 msg = nlmsg_alloc(); 4560 if (!msg) 4561 return -1; 4562 4563 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)", 4564 drv->ifindex); 4565 4566 nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE); 4567 4568 for (i = 0; i < 4; i++) { 4569 if (!params->wep_key[i]) 4570 continue; 4571 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP, 4572 NULL, i, 4573 i == params->wep_tx_keyidx, NULL, 0, 4574 params->wep_key[i], 4575 params->wep_key_len[i]); 4576 if (params->wep_tx_keyidx != i) 4577 continue; 4578 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0, 4579 params->wep_key[i], params->wep_key_len[i])) { 4580 nlmsg_free(msg); 4581 return -1; 4582 } 4583 } 4584 4585 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4586 if (params->bssid) { 4587 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 4588 MAC2STR(params->bssid)); 4589 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 4590 } 4591 if (params->freq) { 4592 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 4593 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 4594 } 4595 if (params->ssid) { 4596 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 4597 params->ssid, params->ssid_len); 4598 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 4599 params->ssid); 4600 } 4601 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len); 4602 if (params->ie) 4603 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie); 4604 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 4605 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 4606 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 4607 type = NL80211_AUTHTYPE_SHARED_KEY; 4608 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 4609 type = NL80211_AUTHTYPE_NETWORK_EAP; 4610 else if (params->auth_alg & WPA_AUTH_ALG_FT) 4611 type = NL80211_AUTHTYPE_FT; 4612 else 4613 goto nla_put_failure; 4614 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 4615 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 4616 if (params->local_state_change) { 4617 wpa_printf(MSG_DEBUG, " * Local state change only"); 4618 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 4619 } 4620 4621 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4622 msg = NULL; 4623 if (ret) { 4624 wpa_dbg(drv->ctx, MSG_DEBUG, 4625 "nl80211: MLME command failed (auth): ret=%d (%s)", 4626 ret, strerror(-ret)); 4627 count++; 4628 if (ret == -EALREADY && count == 1 && params->bssid && 4629 !params->local_state_change) { 4630 /* 4631 * mac80211 does not currently accept new 4632 * authentication if we are already authenticated. As a 4633 * workaround, force deauthentication and try again. 4634 */ 4635 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication " 4636 "after forced deauthentication"); 4637 wpa_driver_nl80211_deauthenticate( 4638 bss, params->bssid, 4639 WLAN_REASON_PREV_AUTH_NOT_VALID); 4640 nlmsg_free(msg); 4641 goto retry; 4642 } 4643 4644 if (ret == -ENOENT && params->freq && !is_retry) { 4645 /* 4646 * cfg80211 has likely expired the BSS entry even 4647 * though it was previously available in our internal 4648 * BSS table. To recover quickly, start a single 4649 * channel scan on the specified channel. 4650 */ 4651 struct wpa_driver_scan_params scan; 4652 int freqs[2]; 4653 4654 os_memset(&scan, 0, sizeof(scan)); 4655 scan.num_ssids = 1; 4656 if (params->ssid) { 4657 scan.ssids[0].ssid = params->ssid; 4658 scan.ssids[0].ssid_len = params->ssid_len; 4659 } 4660 freqs[0] = params->freq; 4661 freqs[1] = 0; 4662 scan.freqs = freqs; 4663 wpa_printf(MSG_DEBUG, "nl80211: Trigger single " 4664 "channel scan to refresh cfg80211 BSS " 4665 "entry"); 4666 ret = wpa_driver_nl80211_scan(bss, &scan); 4667 if (ret == 0) { 4668 nl80211_copy_auth_params(drv, params); 4669 drv->scan_for_auth = 1; 4670 } 4671 } else if (is_retry) { 4672 /* 4673 * Need to indicate this with an event since the return 4674 * value from the retry is not delivered to core code. 4675 */ 4676 union wpa_event_data event; 4677 wpa_printf(MSG_DEBUG, "nl80211: Authentication retry " 4678 "failed"); 4679 os_memset(&event, 0, sizeof(event)); 4680 os_memcpy(event.timeout_event.addr, drv->auth_bssid_, 4681 ETH_ALEN); 4682 wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT, 4683 &event); 4684 } 4685 4686 goto nla_put_failure; 4687 } 4688 ret = 0; 4689 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send " 4690 "successfully"); 4691 4692nla_put_failure: 4693 nlmsg_free(msg); 4694 return ret; 4695} 4696 4697 4698static int wpa_driver_nl80211_authenticate_retry( 4699 struct wpa_driver_nl80211_data *drv) 4700{ 4701 struct wpa_driver_auth_params params; 4702 struct i802_bss *bss = &drv->first_bss; 4703 int i; 4704 4705 wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again"); 4706 4707 os_memset(¶ms, 0, sizeof(params)); 4708 params.freq = drv->auth_freq; 4709 params.auth_alg = drv->auth_alg; 4710 params.wep_tx_keyidx = drv->auth_wep_tx_keyidx; 4711 params.local_state_change = drv->auth_local_state_change; 4712 params.p2p = drv->auth_p2p; 4713 4714 if (!is_zero_ether_addr(drv->auth_bssid_)) 4715 params.bssid = drv->auth_bssid_; 4716 4717 if (drv->auth_ssid_len) { 4718 params.ssid = drv->auth_ssid; 4719 params.ssid_len = drv->auth_ssid_len; 4720 } 4721 4722 params.ie = drv->auth_ie; 4723 params.ie_len = drv->auth_ie_len; 4724 4725 for (i = 0; i < 4; i++) { 4726 if (drv->auth_wep_key_len[i]) { 4727 params.wep_key[i] = drv->auth_wep_key[i]; 4728 params.wep_key_len[i] = drv->auth_wep_key_len[i]; 4729 } 4730 } 4731 4732 drv->retry_auth = 1; 4733 return wpa_driver_nl80211_authenticate(bss, ¶ms); 4734} 4735 4736 4737struct phy_info_arg { 4738 u16 *num_modes; 4739 struct hostapd_hw_modes *modes; 4740}; 4741 4742static int phy_info_handler(struct nl_msg *msg, void *arg) 4743{ 4744 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 4745 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 4746 struct phy_info_arg *phy_info = arg; 4747 4748 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1]; 4749 4750 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1]; 4751 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 4752 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, 4753 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, 4754 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG }, 4755 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG }, 4756 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, 4757 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 }, 4758 }; 4759 4760 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1]; 4761 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = { 4762 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 }, 4763 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG }, 4764 }; 4765 4766 struct nlattr *nl_band; 4767 struct nlattr *nl_freq; 4768 struct nlattr *nl_rate; 4769 int rem_band, rem_freq, rem_rate; 4770 struct hostapd_hw_modes *mode; 4771 int idx, mode_is_set; 4772 4773 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 4774 genlmsg_attrlen(gnlh, 0), NULL); 4775 4776 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS]) 4777 return NL_SKIP; 4778 4779 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) { 4780 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode)); 4781 if (!mode) 4782 return NL_SKIP; 4783 phy_info->modes = mode; 4784 4785 mode_is_set = 0; 4786 4787 mode = &phy_info->modes[*(phy_info->num_modes)]; 4788 memset(mode, 0, sizeof(*mode)); 4789 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN; 4790 *(phy_info->num_modes) += 1; 4791 4792 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band), 4793 nla_len(nl_band), NULL); 4794 4795 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) { 4796 mode->ht_capab = nla_get_u16( 4797 tb_band[NL80211_BAND_ATTR_HT_CAPA]); 4798 } 4799 4800 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) { 4801 mode->a_mpdu_params |= nla_get_u8( 4802 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) & 4803 0x03; 4804 } 4805 4806 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) { 4807 mode->a_mpdu_params |= nla_get_u8( 4808 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) << 4809 2; 4810 } 4811 4812 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] && 4813 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) { 4814 u8 *mcs; 4815 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]); 4816 os_memcpy(mode->mcs_set, mcs, 16); 4817 } 4818 4819 if (tb_band[NL80211_BAND_ATTR_VHT_CAPA]) { 4820 mode->vht_capab = nla_get_u32( 4821 tb_band[NL80211_BAND_ATTR_VHT_CAPA]); 4822 } 4823 4824 if (tb_band[NL80211_BAND_ATTR_VHT_MCS_SET] && 4825 nla_len(tb_band[NL80211_BAND_ATTR_VHT_MCS_SET])) { 4826 u8 *mcs; 4827 mcs = nla_data(tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]); 4828 os_memcpy(mode->vht_mcs_set, mcs, 8); 4829 } 4830 4831 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) { 4832 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq), 4833 nla_len(nl_freq), freq_policy); 4834 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 4835 continue; 4836 mode->num_channels++; 4837 } 4838 4839 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data)); 4840 if (!mode->channels) 4841 return NL_SKIP; 4842 4843 idx = 0; 4844 4845 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) { 4846 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq), 4847 nla_len(nl_freq), freq_policy); 4848 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 4849 continue; 4850 4851 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]); 4852 mode->channels[idx].flag = 0; 4853 4854 if (!mode_is_set) { 4855 /* crude heuristic */ 4856 if (mode->channels[idx].freq < 4000) 4857 mode->mode = HOSTAPD_MODE_IEEE80211B; 4858 else 4859 mode->mode = HOSTAPD_MODE_IEEE80211A; 4860 mode_is_set = 1; 4861 } 4862 4863 /* crude heuristic */ 4864 if (mode->channels[idx].freq < 4000) 4865 if (mode->channels[idx].freq == 2484) 4866 mode->channels[idx].chan = 14; 4867 else 4868 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5; 4869 else 4870 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000; 4871 4872 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 4873 mode->channels[idx].flag |= 4874 HOSTAPD_CHAN_DISABLED; 4875 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN]) 4876 mode->channels[idx].flag |= 4877 HOSTAPD_CHAN_PASSIVE_SCAN; 4878 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS]) 4879 mode->channels[idx].flag |= 4880 HOSTAPD_CHAN_NO_IBSS; 4881 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR]) 4882 mode->channels[idx].flag |= 4883 HOSTAPD_CHAN_RADAR; 4884 4885 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] && 4886 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 4887 mode->channels[idx].max_tx_power = 4888 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100; 4889 4890 idx++; 4891 } 4892 4893 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) { 4894 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate), 4895 nla_len(nl_rate), rate_policy); 4896 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 4897 continue; 4898 mode->num_rates++; 4899 } 4900 4901 mode->rates = os_zalloc(mode->num_rates * sizeof(int)); 4902 if (!mode->rates) 4903 return NL_SKIP; 4904 4905 idx = 0; 4906 4907 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) { 4908 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate), 4909 nla_len(nl_rate), rate_policy); 4910 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 4911 continue; 4912 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]); 4913 4914 /* crude heuristic */ 4915 if (mode->mode == HOSTAPD_MODE_IEEE80211B && 4916 mode->rates[idx] > 200) 4917 mode->mode = HOSTAPD_MODE_IEEE80211G; 4918 4919 idx++; 4920 } 4921 } 4922 4923 return NL_SKIP; 4924} 4925 4926static struct hostapd_hw_modes * 4927wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes) 4928{ 4929 u16 m; 4930 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode; 4931 int i, mode11g_idx = -1; 4932 4933 /* If only 802.11g mode is included, use it to construct matching 4934 * 802.11b mode data. */ 4935 4936 for (m = 0; m < *num_modes; m++) { 4937 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B) 4938 return modes; /* 802.11b already included */ 4939 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G) 4940 mode11g_idx = m; 4941 } 4942 4943 if (mode11g_idx < 0) 4944 return modes; /* 2.4 GHz band not supported at all */ 4945 4946 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes)); 4947 if (nmodes == NULL) 4948 return modes; /* Could not add 802.11b mode */ 4949 4950 mode = &nmodes[*num_modes]; 4951 os_memset(mode, 0, sizeof(*mode)); 4952 (*num_modes)++; 4953 modes = nmodes; 4954 4955 mode->mode = HOSTAPD_MODE_IEEE80211B; 4956 4957 mode11g = &modes[mode11g_idx]; 4958 mode->num_channels = mode11g->num_channels; 4959 mode->channels = os_malloc(mode11g->num_channels * 4960 sizeof(struct hostapd_channel_data)); 4961 if (mode->channels == NULL) { 4962 (*num_modes)--; 4963 return modes; /* Could not add 802.11b mode */ 4964 } 4965 os_memcpy(mode->channels, mode11g->channels, 4966 mode11g->num_channels * sizeof(struct hostapd_channel_data)); 4967 4968 mode->num_rates = 0; 4969 mode->rates = os_malloc(4 * sizeof(int)); 4970 if (mode->rates == NULL) { 4971 os_free(mode->channels); 4972 (*num_modes)--; 4973 return modes; /* Could not add 802.11b mode */ 4974 } 4975 4976 for (i = 0; i < mode11g->num_rates; i++) { 4977 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 && 4978 mode11g->rates[i] != 55 && mode11g->rates[i] != 110) 4979 continue; 4980 mode->rates[mode->num_rates] = mode11g->rates[i]; 4981 mode->num_rates++; 4982 if (mode->num_rates == 4) 4983 break; 4984 } 4985 4986 if (mode->num_rates == 0) { 4987 os_free(mode->channels); 4988 os_free(mode->rates); 4989 (*num_modes)--; 4990 return modes; /* No 802.11b rates */ 4991 } 4992 4993 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g " 4994 "information"); 4995 4996 return modes; 4997} 4998 4999 5000static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start, 5001 int end) 5002{ 5003 int c; 5004 5005 for (c = 0; c < mode->num_channels; c++) { 5006 struct hostapd_channel_data *chan = &mode->channels[c]; 5007 if (chan->freq - 10 >= start && chan->freq + 10 <= end) 5008 chan->flag |= HOSTAPD_CHAN_HT40; 5009 } 5010} 5011 5012 5013static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start, 5014 int end) 5015{ 5016 int c; 5017 5018 for (c = 0; c < mode->num_channels; c++) { 5019 struct hostapd_channel_data *chan = &mode->channels[c]; 5020 if (!(chan->flag & HOSTAPD_CHAN_HT40)) 5021 continue; 5022 if (chan->freq - 30 >= start && chan->freq - 10 <= end) 5023 chan->flag |= HOSTAPD_CHAN_HT40MINUS; 5024 if (chan->freq + 10 >= start && chan->freq + 30 <= end) 5025 chan->flag |= HOSTAPD_CHAN_HT40PLUS; 5026 } 5027} 5028 5029 5030static void nl80211_reg_rule_ht40(struct nlattr *tb[], 5031 struct phy_info_arg *results) 5032{ 5033 u32 start, end, max_bw; 5034 u16 m; 5035 5036 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 5037 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 5038 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 5039 return; 5040 5041 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 5042 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 5043 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 5044 5045 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz", 5046 start, end, max_bw); 5047 if (max_bw < 40) 5048 return; 5049 5050 for (m = 0; m < *results->num_modes; m++) { 5051 if (!(results->modes[m].ht_capab & 5052 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 5053 continue; 5054 nl80211_set_ht40_mode(&results->modes[m], start, end); 5055 } 5056} 5057 5058 5059static void nl80211_reg_rule_sec(struct nlattr *tb[], 5060 struct phy_info_arg *results) 5061{ 5062 u32 start, end, max_bw; 5063 u16 m; 5064 5065 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 5066 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 5067 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 5068 return; 5069 5070 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 5071 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 5072 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 5073 5074 if (max_bw < 20) 5075 return; 5076 5077 for (m = 0; m < *results->num_modes; m++) { 5078 if (!(results->modes[m].ht_capab & 5079 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 5080 continue; 5081 nl80211_set_ht40_mode_sec(&results->modes[m], start, end); 5082 } 5083} 5084 5085 5086static int nl80211_get_reg(struct nl_msg *msg, void *arg) 5087{ 5088 struct phy_info_arg *results = arg; 5089 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 5090 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 5091 struct nlattr *nl_rule; 5092 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1]; 5093 int rem_rule; 5094 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 5095 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 5096 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 5097 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 5098 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 5099 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 5100 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 5101 }; 5102 5103 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5104 genlmsg_attrlen(gnlh, 0), NULL); 5105 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] || 5106 !tb_msg[NL80211_ATTR_REG_RULES]) { 5107 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information " 5108 "available"); 5109 return NL_SKIP; 5110 } 5111 5112 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s", 5113 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2])); 5114 5115 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 5116 { 5117 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 5118 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 5119 nl80211_reg_rule_ht40(tb_rule, results); 5120 } 5121 5122 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 5123 { 5124 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 5125 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 5126 nl80211_reg_rule_sec(tb_rule, results); 5127 } 5128 5129 return NL_SKIP; 5130} 5131 5132 5133static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv, 5134 struct phy_info_arg *results) 5135{ 5136 struct nl_msg *msg; 5137 5138 msg = nlmsg_alloc(); 5139 if (!msg) 5140 return -ENOMEM; 5141 5142 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG); 5143 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results); 5144} 5145 5146 5147static struct hostapd_hw_modes * 5148wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags) 5149{ 5150 struct i802_bss *bss = priv; 5151 struct wpa_driver_nl80211_data *drv = bss->drv; 5152 struct nl_msg *msg; 5153 struct phy_info_arg result = { 5154 .num_modes = num_modes, 5155 .modes = NULL, 5156 }; 5157 5158 *num_modes = 0; 5159 *flags = 0; 5160 5161 msg = nlmsg_alloc(); 5162 if (!msg) 5163 return NULL; 5164 5165 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 5166 5167 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5168 5169 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) { 5170 nl80211_set_ht40_flags(drv, &result); 5171 return wpa_driver_nl80211_add_11b(result.modes, num_modes); 5172 } 5173 msg = NULL; 5174 nla_put_failure: 5175 nlmsg_free(msg); 5176 return NULL; 5177} 5178 5179 5180static int wpa_driver_nl80211_send_mntr(struct wpa_driver_nl80211_data *drv, 5181 const void *data, size_t len, 5182 int encrypt, int noack) 5183{ 5184 __u8 rtap_hdr[] = { 5185 0x00, 0x00, /* radiotap version */ 5186 0x0e, 0x00, /* radiotap length */ 5187 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */ 5188 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */ 5189 0x00, /* padding */ 5190 0x00, 0x00, /* RX and TX flags to indicate that */ 5191 0x00, 0x00, /* this is the injected frame directly */ 5192 }; 5193 struct iovec iov[2] = { 5194 { 5195 .iov_base = &rtap_hdr, 5196 .iov_len = sizeof(rtap_hdr), 5197 }, 5198 { 5199 .iov_base = (void *) data, 5200 .iov_len = len, 5201 } 5202 }; 5203 struct msghdr msg = { 5204 .msg_name = NULL, 5205 .msg_namelen = 0, 5206 .msg_iov = iov, 5207 .msg_iovlen = 2, 5208 .msg_control = NULL, 5209 .msg_controllen = 0, 5210 .msg_flags = 0, 5211 }; 5212 int res; 5213 u16 txflags = 0; 5214 5215 if (encrypt) 5216 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP; 5217 5218 if (drv->monitor_sock < 0) { 5219 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available " 5220 "for %s", __func__); 5221 return -1; 5222 } 5223 5224 if (noack) 5225 txflags |= IEEE80211_RADIOTAP_F_TX_NOACK; 5226 *(le16 *) &rtap_hdr[12] = host_to_le16(txflags); 5227 5228 res = sendmsg(drv->monitor_sock, &msg, 0); 5229 if (res < 0) { 5230 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno)); 5231 return -1; 5232 } 5233 return 0; 5234} 5235 5236 5237static int wpa_driver_nl80211_send_frame(struct i802_bss *bss, 5238 const void *data, size_t len, 5239 int encrypt, int noack, 5240 unsigned int freq, int no_cck, 5241 int offchanok, unsigned int wait_time) 5242{ 5243 struct wpa_driver_nl80211_data *drv = bss->drv; 5244 u64 cookie; 5245 5246 if (freq == 0) 5247 freq = bss->freq; 5248 5249 if (drv->use_monitor) 5250 return wpa_driver_nl80211_send_mntr(drv, data, len, 5251 encrypt, noack); 5252 5253 return nl80211_send_frame_cmd(bss, freq, wait_time, data, len, 5254 &cookie, no_cck, noack, offchanok); 5255} 5256 5257 5258static int wpa_driver_nl80211_send_mlme_freq(struct i802_bss *bss, 5259 const u8 *data, 5260 size_t data_len, int noack, 5261 unsigned int freq, int no_cck, 5262 int offchanok, 5263 unsigned int wait_time) 5264{ 5265 struct wpa_driver_nl80211_data *drv = bss->drv; 5266 struct ieee80211_mgmt *mgmt; 5267 int encrypt = 1; 5268 u16 fc; 5269 5270 mgmt = (struct ieee80211_mgmt *) data; 5271 fc = le_to_host16(mgmt->frame_control); 5272 5273 if (is_sta_interface(drv->nlmode) && 5274 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 5275 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) { 5276 /* 5277 * The use of last_mgmt_freq is a bit of a hack, 5278 * but it works due to the single-threaded nature 5279 * of wpa_supplicant. 5280 */ 5281 if (freq == 0) 5282 freq = drv->last_mgmt_freq; 5283 return nl80211_send_frame_cmd(bss, freq, 0, 5284 data, data_len, NULL, 1, noack, 5285 1); 5286 } 5287 5288 if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) { 5289 if (freq == 0) 5290 freq = bss->freq; 5291 return nl80211_send_frame_cmd(bss, freq, 5292 (int) freq == bss->freq ? 0 : 5293 wait_time, 5294 data, data_len, 5295 &drv->send_action_cookie, 5296 no_cck, noack, offchanok); 5297 } 5298 5299 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 5300 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) { 5301 /* 5302 * Only one of the authentication frame types is encrypted. 5303 * In order for static WEP encryption to work properly (i.e., 5304 * to not encrypt the frame), we need to tell mac80211 about 5305 * the frames that must not be encrypted. 5306 */ 5307 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg); 5308 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction); 5309 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3) 5310 encrypt = 0; 5311 } 5312 5313 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 5314 noack, freq, no_cck, offchanok, 5315 wait_time); 5316} 5317 5318 5319static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data, 5320 size_t data_len, int noack) 5321{ 5322 struct i802_bss *bss = priv; 5323 return wpa_driver_nl80211_send_mlme_freq(bss, data, data_len, noack, 5324 0, 0, 0, 0); 5325} 5326 5327 5328static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble, 5329 int slot, int ht_opmode, int ap_isolate, 5330 int *basic_rates) 5331{ 5332 struct wpa_driver_nl80211_data *drv = bss->drv; 5333 struct nl_msg *msg; 5334 5335 msg = nlmsg_alloc(); 5336 if (!msg) 5337 return -ENOMEM; 5338 5339 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS); 5340 5341 if (cts >= 0) 5342 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts); 5343 if (preamble >= 0) 5344 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble); 5345 if (slot >= 0) 5346 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot); 5347 if (ht_opmode >= 0) 5348 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode); 5349 if (ap_isolate >= 0) 5350 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate); 5351 5352 if (basic_rates) { 5353 u8 rates[NL80211_MAX_SUPP_RATES]; 5354 u8 rates_len = 0; 5355 int i; 5356 5357 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; 5358 i++) 5359 rates[rates_len++] = basic_rates[i] / 5; 5360 5361 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates); 5362 } 5363 5364 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 5365 5366 return send_and_recv_msgs(drv, msg, NULL, NULL); 5367 nla_put_failure: 5368 nlmsg_free(msg); 5369 return -ENOBUFS; 5370} 5371 5372 5373static int wpa_driver_nl80211_set_ap(void *priv, 5374 struct wpa_driver_ap_params *params) 5375{ 5376 struct i802_bss *bss = priv; 5377 struct wpa_driver_nl80211_data *drv = bss->drv; 5378 struct nl_msg *msg; 5379 u8 cmd = NL80211_CMD_NEW_BEACON; 5380 int ret; 5381 int beacon_set; 5382 int ifindex = if_nametoindex(bss->ifname); 5383 int num_suites; 5384 u32 suites[10]; 5385 u32 ver; 5386 5387 beacon_set = bss->beacon_set; 5388 5389 msg = nlmsg_alloc(); 5390 if (!msg) 5391 return -ENOMEM; 5392 5393 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)", 5394 beacon_set); 5395 if (beacon_set) 5396 cmd = NL80211_CMD_SET_BEACON; 5397 5398 nl80211_cmd(drv, msg, 0, cmd); 5399 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head); 5400 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail); 5401 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 5402 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int); 5403 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period); 5404 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 5405 params->ssid); 5406 if (params->proberesp && params->proberesp_len) 5407 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len, 5408 params->proberesp); 5409 switch (params->hide_ssid) { 5410 case NO_SSID_HIDING: 5411 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5412 NL80211_HIDDEN_SSID_NOT_IN_USE); 5413 break; 5414 case HIDDEN_SSID_ZERO_LEN: 5415 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5416 NL80211_HIDDEN_SSID_ZERO_LEN); 5417 break; 5418 case HIDDEN_SSID_ZERO_CONTENTS: 5419 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5420 NL80211_HIDDEN_SSID_ZERO_CONTENTS); 5421 break; 5422 } 5423 if (params->privacy) 5424 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 5425 if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) == 5426 (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) { 5427 /* Leave out the attribute */ 5428 } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) 5429 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 5430 NL80211_AUTHTYPE_SHARED_KEY); 5431 else 5432 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 5433 NL80211_AUTHTYPE_OPEN_SYSTEM); 5434 5435 ver = 0; 5436 if (params->wpa_version & WPA_PROTO_WPA) 5437 ver |= NL80211_WPA_VERSION_1; 5438 if (params->wpa_version & WPA_PROTO_RSN) 5439 ver |= NL80211_WPA_VERSION_2; 5440 if (ver) 5441 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 5442 5443 num_suites = 0; 5444 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X) 5445 suites[num_suites++] = WLAN_AKM_SUITE_8021X; 5446 if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK) 5447 suites[num_suites++] = WLAN_AKM_SUITE_PSK; 5448 if (num_suites) { 5449 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES, 5450 num_suites * sizeof(u32), suites); 5451 } 5452 5453 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X && 5454 params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40)) 5455 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT); 5456 5457 num_suites = 0; 5458 if (params->pairwise_ciphers & WPA_CIPHER_CCMP) 5459 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP; 5460 if (params->pairwise_ciphers & WPA_CIPHER_TKIP) 5461 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP; 5462 if (params->pairwise_ciphers & WPA_CIPHER_WEP104) 5463 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104; 5464 if (params->pairwise_ciphers & WPA_CIPHER_WEP40) 5465 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40; 5466 if (num_suites) { 5467 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, 5468 num_suites * sizeof(u32), suites); 5469 } 5470 5471 switch (params->group_cipher) { 5472 case WPA_CIPHER_CCMP: 5473 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5474 WLAN_CIPHER_SUITE_CCMP); 5475 break; 5476 case WPA_CIPHER_TKIP: 5477 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5478 WLAN_CIPHER_SUITE_TKIP); 5479 break; 5480 case WPA_CIPHER_WEP104: 5481 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5482 WLAN_CIPHER_SUITE_WEP104); 5483 break; 5484 case WPA_CIPHER_WEP40: 5485 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5486 WLAN_CIPHER_SUITE_WEP40); 5487 break; 5488 } 5489 5490 if (params->beacon_ies) { 5491 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies), 5492 wpabuf_head(params->beacon_ies)); 5493 } 5494 if (params->proberesp_ies) { 5495 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP, 5496 wpabuf_len(params->proberesp_ies), 5497 wpabuf_head(params->proberesp_ies)); 5498 } 5499 if (params->assocresp_ies) { 5500 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP, 5501 wpabuf_len(params->assocresp_ies), 5502 wpabuf_head(params->assocresp_ies)); 5503 } 5504 5505 if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER) { 5506 NLA_PUT_U16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT, 5507 params->ap_max_inactivity); 5508 } 5509 5510 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5511 if (ret) { 5512 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)", 5513 ret, strerror(-ret)); 5514 } else { 5515 bss->beacon_set = 1; 5516 nl80211_set_bss(bss, params->cts_protect, params->preamble, 5517 params->short_slot_time, params->ht_opmode, 5518 params->isolate, params->basic_rates); 5519 } 5520 return ret; 5521 nla_put_failure: 5522 nlmsg_free(msg); 5523 return -ENOBUFS; 5524} 5525 5526 5527static int wpa_driver_nl80211_set_freq(struct i802_bss *bss, 5528 int freq, int ht_enabled, 5529 int sec_channel_offset) 5530{ 5531 struct wpa_driver_nl80211_data *drv = bss->drv; 5532 struct nl_msg *msg; 5533 int ret; 5534 5535 wpa_printf(MSG_DEBUG, "nl80211: Set freq %d (ht_enabled=%d " 5536 "sec_channel_offset=%d)", 5537 freq, ht_enabled, sec_channel_offset); 5538 msg = nlmsg_alloc(); 5539 if (!msg) 5540 return -1; 5541 5542 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 5543 5544 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5545 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 5546 if (ht_enabled) { 5547 switch (sec_channel_offset) { 5548 case -1: 5549 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 5550 NL80211_CHAN_HT40MINUS); 5551 break; 5552 case 1: 5553 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 5554 NL80211_CHAN_HT40PLUS); 5555 break; 5556 default: 5557 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 5558 NL80211_CHAN_HT20); 5559 break; 5560 } 5561 } 5562 5563 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5564 msg = NULL; 5565 if (ret == 0) { 5566 bss->freq = freq; 5567 return 0; 5568 } 5569 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): " 5570 "%d (%s)", freq, ret, strerror(-ret)); 5571nla_put_failure: 5572 nlmsg_free(msg); 5573 return -1; 5574} 5575 5576 5577static u32 sta_flags_nl80211(int flags) 5578{ 5579 u32 f = 0; 5580 5581 if (flags & WPA_STA_AUTHORIZED) 5582 f |= BIT(NL80211_STA_FLAG_AUTHORIZED); 5583 if (flags & WPA_STA_WMM) 5584 f |= BIT(NL80211_STA_FLAG_WME); 5585 if (flags & WPA_STA_SHORT_PREAMBLE) 5586 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 5587 if (flags & WPA_STA_MFP) 5588 f |= BIT(NL80211_STA_FLAG_MFP); 5589 if (flags & WPA_STA_TDLS_PEER) 5590 f |= BIT(NL80211_STA_FLAG_TDLS_PEER); 5591 5592 return f; 5593} 5594 5595 5596static int wpa_driver_nl80211_sta_add(void *priv, 5597 struct hostapd_sta_add_params *params) 5598{ 5599 struct i802_bss *bss = priv; 5600 struct wpa_driver_nl80211_data *drv = bss->drv; 5601 struct nl_msg *msg, *wme = NULL; 5602 struct nl80211_sta_flag_update upd; 5603 int ret = -ENOBUFS; 5604 5605 if ((params->flags & WPA_STA_TDLS_PEER) && 5606 !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 5607 return -EOPNOTSUPP; 5608 5609 msg = nlmsg_alloc(); 5610 if (!msg) 5611 return -ENOMEM; 5612 5613 nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION : 5614 NL80211_CMD_NEW_STATION); 5615 5616 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 5617 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr); 5618 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len, 5619 params->supp_rates); 5620 if (!params->set) { 5621 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid); 5622 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL, 5623 params->listen_interval); 5624 } 5625 if (params->ht_capabilities) { 5626 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, 5627 sizeof(*params->ht_capabilities), 5628 params->ht_capabilities); 5629 } 5630 5631 os_memset(&upd, 0, sizeof(upd)); 5632 upd.mask = sta_flags_nl80211(params->flags); 5633 upd.set = upd.mask; 5634 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 5635 5636 if (params->flags & WPA_STA_WMM) { 5637 wme = nlmsg_alloc(); 5638 if (!wme) 5639 goto nla_put_failure; 5640 5641 NLA_PUT_U8(wme, NL80211_STA_WME_UAPSD_QUEUES, 5642 params->qosinfo & WMM_QOSINFO_STA_AC_MASK); 5643 NLA_PUT_U8(wme, NL80211_STA_WME_MAX_SP, 5644 (params->qosinfo > WMM_QOSINFO_STA_SP_SHIFT) & 5645 WMM_QOSINFO_STA_SP_MASK); 5646 nla_put_nested(msg, NL80211_ATTR_STA_WME, wme); 5647 } 5648 5649 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5650 msg = NULL; 5651 if (ret) 5652 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION " 5653 "result: %d (%s)", params->set ? "SET" : "NEW", ret, 5654 strerror(-ret)); 5655 if (ret == -EEXIST) 5656 ret = 0; 5657 nla_put_failure: 5658 nlmsg_free(wme); 5659 nlmsg_free(msg); 5660 return ret; 5661} 5662 5663 5664static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr) 5665{ 5666 struct i802_bss *bss = priv; 5667 struct wpa_driver_nl80211_data *drv = bss->drv; 5668 struct nl_msg *msg; 5669 int ret; 5670 5671 msg = nlmsg_alloc(); 5672 if (!msg) 5673 return -ENOMEM; 5674 5675 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 5676 5677 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 5678 if_nametoindex(bss->ifname)); 5679 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 5680 5681 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5682 if (ret == -ENOENT) 5683 return 0; 5684 return ret; 5685 nla_put_failure: 5686 nlmsg_free(msg); 5687 return -ENOBUFS; 5688} 5689 5690 5691static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, 5692 int ifidx) 5693{ 5694 struct nl_msg *msg; 5695 5696 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx); 5697 5698 /* stop listening for EAPOL on this interface */ 5699 del_ifidx(drv, ifidx); 5700 5701 msg = nlmsg_alloc(); 5702 if (!msg) 5703 goto nla_put_failure; 5704 5705 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE); 5706 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx); 5707 5708 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 5709 return; 5710 msg = NULL; 5711 nla_put_failure: 5712 nlmsg_free(msg); 5713 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx); 5714} 5715 5716 5717static const char * nl80211_iftype_str(enum nl80211_iftype mode) 5718{ 5719 switch (mode) { 5720 case NL80211_IFTYPE_ADHOC: 5721 return "ADHOC"; 5722 case NL80211_IFTYPE_STATION: 5723 return "STATION"; 5724 case NL80211_IFTYPE_AP: 5725 return "AP"; 5726 case NL80211_IFTYPE_MONITOR: 5727 return "MONITOR"; 5728 case NL80211_IFTYPE_P2P_CLIENT: 5729 return "P2P_CLIENT"; 5730 case NL80211_IFTYPE_P2P_GO: 5731 return "P2P_GO"; 5732 default: 5733 return "unknown"; 5734 } 5735} 5736 5737 5738static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv, 5739 const char *ifname, 5740 enum nl80211_iftype iftype, 5741 const u8 *addr, int wds) 5742{ 5743 struct nl_msg *msg, *flags = NULL; 5744 int ifidx; 5745 int ret = -ENOBUFS; 5746 5747 wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)", 5748 iftype, nl80211_iftype_str(iftype)); 5749 5750 msg = nlmsg_alloc(); 5751 if (!msg) 5752 return -1; 5753 5754 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE); 5755 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5756 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname); 5757 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype); 5758 5759 if (iftype == NL80211_IFTYPE_MONITOR) { 5760 int err; 5761 5762 flags = nlmsg_alloc(); 5763 if (!flags) 5764 goto nla_put_failure; 5765 5766 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES); 5767 5768 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags); 5769 5770 nlmsg_free(flags); 5771 5772 if (err) 5773 goto nla_put_failure; 5774 } else if (wds) { 5775 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds); 5776 } 5777 5778 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5779 msg = NULL; 5780 if (ret) { 5781 nla_put_failure: 5782 nlmsg_free(msg); 5783 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)", 5784 ifname, ret, strerror(-ret)); 5785 return ret; 5786 } 5787 5788 ifidx = if_nametoindex(ifname); 5789 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d", 5790 ifname, ifidx); 5791 5792 if (ifidx <= 0) 5793 return -1; 5794 5795 /* start listening for EAPOL on this interface */ 5796 add_ifidx(drv, ifidx); 5797 5798 if (addr && iftype != NL80211_IFTYPE_MONITOR && 5799 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) { 5800 nl80211_remove_iface(drv, ifidx); 5801 return -1; 5802 } 5803 5804 return ifidx; 5805} 5806 5807 5808static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv, 5809 const char *ifname, enum nl80211_iftype iftype, 5810 const u8 *addr, int wds) 5811{ 5812 int ret; 5813 5814 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds); 5815 5816 /* if error occurred and interface exists already */ 5817 if (ret == -ENFILE && if_nametoindex(ifname)) { 5818 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname); 5819 5820 /* Try to remove the interface that was already there. */ 5821 nl80211_remove_iface(drv, if_nametoindex(ifname)); 5822 5823 /* Try to create the interface again */ 5824 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, 5825 wds); 5826 } 5827 5828 if (ret >= 0 && is_p2p_interface(iftype)) 5829 nl80211_disable_11b_rates(drv, ret, 1); 5830 5831 return ret; 5832} 5833 5834 5835static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok) 5836{ 5837 struct ieee80211_hdr *hdr; 5838 u16 fc; 5839 union wpa_event_data event; 5840 5841 hdr = (struct ieee80211_hdr *) buf; 5842 fc = le_to_host16(hdr->frame_control); 5843 5844 os_memset(&event, 0, sizeof(event)); 5845 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 5846 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 5847 event.tx_status.dst = hdr->addr1; 5848 event.tx_status.data = buf; 5849 event.tx_status.data_len = len; 5850 event.tx_status.ack = ok; 5851 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event); 5852} 5853 5854 5855static void from_unknown_sta(struct wpa_driver_nl80211_data *drv, 5856 u8 *buf, size_t len) 5857{ 5858 struct ieee80211_hdr *hdr = (void *)buf; 5859 u16 fc; 5860 union wpa_event_data event; 5861 5862 if (len < sizeof(*hdr)) 5863 return; 5864 5865 fc = le_to_host16(hdr->frame_control); 5866 5867 os_memset(&event, 0, sizeof(event)); 5868 event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len); 5869 event.rx_from_unknown.addr = hdr->addr2; 5870 event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) == 5871 (WLAN_FC_FROMDS | WLAN_FC_TODS); 5872 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 5873} 5874 5875 5876static void handle_frame(struct wpa_driver_nl80211_data *drv, 5877 u8 *buf, size_t len, int datarate, int ssi_signal) 5878{ 5879 struct ieee80211_hdr *hdr; 5880 u16 fc; 5881 union wpa_event_data event; 5882 5883 hdr = (struct ieee80211_hdr *) buf; 5884 fc = le_to_host16(hdr->frame_control); 5885 5886 switch (WLAN_FC_GET_TYPE(fc)) { 5887 case WLAN_FC_TYPE_MGMT: 5888 os_memset(&event, 0, sizeof(event)); 5889 event.rx_mgmt.frame = buf; 5890 event.rx_mgmt.frame_len = len; 5891 event.rx_mgmt.datarate = datarate; 5892 event.rx_mgmt.ssi_signal = ssi_signal; 5893 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 5894 break; 5895 case WLAN_FC_TYPE_CTRL: 5896 /* can only get here with PS-Poll frames */ 5897 wpa_printf(MSG_DEBUG, "CTRL"); 5898 from_unknown_sta(drv, buf, len); 5899 break; 5900 case WLAN_FC_TYPE_DATA: 5901 from_unknown_sta(drv, buf, len); 5902 break; 5903 } 5904} 5905 5906 5907static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx) 5908{ 5909 struct wpa_driver_nl80211_data *drv = eloop_ctx; 5910 int len; 5911 unsigned char buf[3000]; 5912 struct ieee80211_radiotap_iterator iter; 5913 int ret; 5914 int datarate = 0, ssi_signal = 0; 5915 int injected = 0, failed = 0, rxflags = 0; 5916 5917 len = recv(sock, buf, sizeof(buf), 0); 5918 if (len < 0) { 5919 perror("recv"); 5920 return; 5921 } 5922 5923 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) { 5924 printf("received invalid radiotap frame\n"); 5925 return; 5926 } 5927 5928 while (1) { 5929 ret = ieee80211_radiotap_iterator_next(&iter); 5930 if (ret == -ENOENT) 5931 break; 5932 if (ret) { 5933 printf("received invalid radiotap frame (%d)\n", ret); 5934 return; 5935 } 5936 switch (iter.this_arg_index) { 5937 case IEEE80211_RADIOTAP_FLAGS: 5938 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS) 5939 len -= 4; 5940 break; 5941 case IEEE80211_RADIOTAP_RX_FLAGS: 5942 rxflags = 1; 5943 break; 5944 case IEEE80211_RADIOTAP_TX_FLAGS: 5945 injected = 1; 5946 failed = le_to_host16((*(uint16_t *) iter.this_arg)) & 5947 IEEE80211_RADIOTAP_F_TX_FAIL; 5948 break; 5949 case IEEE80211_RADIOTAP_DATA_RETRIES: 5950 break; 5951 case IEEE80211_RADIOTAP_CHANNEL: 5952 /* TODO: convert from freq/flags to channel number */ 5953 break; 5954 case IEEE80211_RADIOTAP_RATE: 5955 datarate = *iter.this_arg * 5; 5956 break; 5957 case IEEE80211_RADIOTAP_DBM_ANTSIGNAL: 5958 ssi_signal = (s8) *iter.this_arg; 5959 break; 5960 } 5961 } 5962 5963 if (rxflags && injected) 5964 return; 5965 5966 if (!injected) 5967 handle_frame(drv, buf + iter.max_length, 5968 len - iter.max_length, datarate, ssi_signal); 5969 else 5970 handle_tx_callback(drv->ctx, buf + iter.max_length, 5971 len - iter.max_length, !failed); 5972} 5973 5974 5975/* 5976 * we post-process the filter code later and rewrite 5977 * this to the offset to the last instruction 5978 */ 5979#define PASS 0xFF 5980#define FAIL 0xFE 5981 5982static struct sock_filter msock_filter_insns[] = { 5983 /* 5984 * do a little-endian load of the radiotap length field 5985 */ 5986 /* load lower byte into A */ 5987 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2), 5988 /* put it into X (== index register) */ 5989 BPF_STMT(BPF_MISC| BPF_TAX, 0), 5990 /* load upper byte into A */ 5991 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3), 5992 /* left-shift it by 8 */ 5993 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8), 5994 /* or with X */ 5995 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0), 5996 /* put result into X */ 5997 BPF_STMT(BPF_MISC| BPF_TAX, 0), 5998 5999 /* 6000 * Allow management frames through, this also gives us those 6001 * management frames that we sent ourselves with status 6002 */ 6003 /* load the lower byte of the IEEE 802.11 frame control field */ 6004 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6005 /* mask off frame type and version */ 6006 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF), 6007 /* accept frame if it's both 0, fall through otherwise */ 6008 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0), 6009 6010 /* 6011 * TODO: add a bit to radiotap RX flags that indicates 6012 * that the sending station is not associated, then 6013 * add a filter here that filters on our DA and that flag 6014 * to allow us to deauth frames to that bad station. 6015 * 6016 * For now allow all To DS data frames through. 6017 */ 6018 /* load the IEEE 802.11 frame control field */ 6019 BPF_STMT(BPF_LD | BPF_H | BPF_IND, 0), 6020 /* mask off frame type, version and DS status */ 6021 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03), 6022 /* accept frame if version 0, type 2 and To DS, fall through otherwise 6023 */ 6024 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0), 6025 6026#if 0 6027 /* 6028 * drop non-data frames 6029 */ 6030 /* load the lower byte of the frame control field */ 6031 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6032 /* mask off QoS bit */ 6033 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c), 6034 /* drop non-data frames */ 6035 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL), 6036#endif 6037 /* load the upper byte of the frame control field */ 6038 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1), 6039 /* mask off toDS/fromDS */ 6040 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03), 6041 /* accept WDS frames */ 6042 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0), 6043 6044 /* 6045 * add header length to index 6046 */ 6047 /* load the lower byte of the frame control field */ 6048 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6049 /* mask off QoS bit */ 6050 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80), 6051 /* right shift it by 6 to give 0 or 2 */ 6052 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6), 6053 /* add data frame header length */ 6054 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24), 6055 /* add index, was start of 802.11 header */ 6056 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0), 6057 /* move to index, now start of LL header */ 6058 BPF_STMT(BPF_MISC | BPF_TAX, 0), 6059 6060 /* 6061 * Accept empty data frames, we use those for 6062 * polling activity. 6063 */ 6064 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0), 6065 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0), 6066 6067 /* 6068 * Accept EAPOL frames 6069 */ 6070 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0), 6071 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL), 6072 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4), 6073 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL), 6074 6075 /* keep these last two statements or change the code below */ 6076 /* return 0 == "DROP" */ 6077 BPF_STMT(BPF_RET | BPF_K, 0), 6078 /* return ~0 == "keep all" */ 6079 BPF_STMT(BPF_RET | BPF_K, ~0), 6080}; 6081 6082static struct sock_fprog msock_filter = { 6083 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]), 6084 .filter = msock_filter_insns, 6085}; 6086 6087 6088static int add_monitor_filter(int s) 6089{ 6090 int idx; 6091 6092 /* rewrite all PASS/FAIL jump offsets */ 6093 for (idx = 0; idx < msock_filter.len; idx++) { 6094 struct sock_filter *insn = &msock_filter_insns[idx]; 6095 6096 if (BPF_CLASS(insn->code) == BPF_JMP) { 6097 if (insn->code == (BPF_JMP|BPF_JA)) { 6098 if (insn->k == PASS) 6099 insn->k = msock_filter.len - idx - 2; 6100 else if (insn->k == FAIL) 6101 insn->k = msock_filter.len - idx - 3; 6102 } 6103 6104 if (insn->jt == PASS) 6105 insn->jt = msock_filter.len - idx - 2; 6106 else if (insn->jt == FAIL) 6107 insn->jt = msock_filter.len - idx - 3; 6108 6109 if (insn->jf == PASS) 6110 insn->jf = msock_filter.len - idx - 2; 6111 else if (insn->jf == FAIL) 6112 insn->jf = msock_filter.len - idx - 3; 6113 } 6114 } 6115 6116 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER, 6117 &msock_filter, sizeof(msock_filter))) { 6118 perror("SO_ATTACH_FILTER"); 6119 return -1; 6120 } 6121 6122 return 0; 6123} 6124 6125 6126static void nl80211_remove_monitor_interface( 6127 struct wpa_driver_nl80211_data *drv) 6128{ 6129 drv->monitor_refcount--; 6130 if (drv->monitor_refcount > 0) 6131 return; 6132 6133 if (drv->monitor_ifidx >= 0) { 6134 nl80211_remove_iface(drv, drv->monitor_ifidx); 6135 drv->monitor_ifidx = -1; 6136 } 6137 if (drv->monitor_sock >= 0) { 6138 eloop_unregister_read_sock(drv->monitor_sock); 6139 close(drv->monitor_sock); 6140 drv->monitor_sock = -1; 6141 } 6142} 6143 6144 6145static int 6146nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv) 6147{ 6148 char buf[IFNAMSIZ]; 6149 struct sockaddr_ll ll; 6150 int optval; 6151 socklen_t optlen; 6152 6153 if (drv->monitor_ifidx >= 0) { 6154 drv->monitor_refcount++; 6155 return 0; 6156 } 6157 6158 if (os_strncmp(drv->first_bss.ifname, "p2p-", 4) == 0) { 6159 /* 6160 * P2P interface name is of the format p2p-%s-%d. For monitor 6161 * interface name corresponding to P2P GO, replace "p2p-" with 6162 * "mon-" to retain the same interface name length and to 6163 * indicate that it is a monitor interface. 6164 */ 6165 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss.ifname + 4); 6166 } else { 6167 /* Non-P2P interface with AP functionality. */ 6168 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname); 6169 } 6170 6171 buf[IFNAMSIZ - 1] = '\0'; 6172 6173 drv->monitor_ifidx = 6174 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL, 6175 0); 6176 6177 if (drv->monitor_ifidx == -EOPNOTSUPP) { 6178 /* 6179 * This is backward compatibility for a few versions of 6180 * the kernel only that didn't advertise the right 6181 * attributes for the only driver that then supported 6182 * AP mode w/o monitor -- ath6kl. 6183 */ 6184 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support " 6185 "monitor interface type - try to run without it"); 6186 drv->device_ap_sme = 1; 6187 } 6188 6189 if (drv->monitor_ifidx < 0) 6190 return -1; 6191 6192 if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1)) 6193 goto error; 6194 6195 memset(&ll, 0, sizeof(ll)); 6196 ll.sll_family = AF_PACKET; 6197 ll.sll_ifindex = drv->monitor_ifidx; 6198 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); 6199 if (drv->monitor_sock < 0) { 6200 perror("socket[PF_PACKET,SOCK_RAW]"); 6201 goto error; 6202 } 6203 6204 if (add_monitor_filter(drv->monitor_sock)) { 6205 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor " 6206 "interface; do filtering in user space"); 6207 /* This works, but will cost in performance. */ 6208 } 6209 6210 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) { 6211 perror("monitor socket bind"); 6212 goto error; 6213 } 6214 6215 optlen = sizeof(optval); 6216 optval = 20; 6217 if (setsockopt 6218 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) { 6219 perror("Failed to set socket priority"); 6220 goto error; 6221 } 6222 6223 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read, 6224 drv, NULL)) { 6225 printf("Could not register monitor read socket\n"); 6226 goto error; 6227 } 6228 6229 return 0; 6230 error: 6231 nl80211_remove_monitor_interface(drv); 6232 return -1; 6233} 6234 6235 6236static int nl80211_setup_ap(struct i802_bss *bss) 6237{ 6238 struct wpa_driver_nl80211_data *drv = bss->drv; 6239 6240 wpa_printf(MSG_DEBUG, "nl80211: Setup AP - device_ap_sme=%d " 6241 "use_monitor=%d", drv->device_ap_sme, drv->use_monitor); 6242 6243 /* 6244 * Disable Probe Request reporting unless we need it in this way for 6245 * devices that include the AP SME, in the other case (unless using 6246 * monitor iface) we'll get it through the nl_mgmt socket instead. 6247 */ 6248 if (!drv->device_ap_sme) 6249 wpa_driver_nl80211_probe_req_report(bss, 0); 6250 6251 if (!drv->device_ap_sme && !drv->use_monitor) 6252 if (nl80211_mgmt_subscribe_ap(bss)) 6253 return -1; 6254 6255 if (drv->device_ap_sme && !drv->use_monitor) 6256 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 6257 return -1; 6258 6259 if (!drv->device_ap_sme && drv->use_monitor && 6260 nl80211_create_monitor_interface(drv) && 6261 !drv->device_ap_sme) 6262 return -1; 6263 6264#ifdef ANDROID_P2P 6265 if (drv->device_ap_sme && drv->use_monitor) 6266 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 6267 return -1; 6268 6269 if (drv->use_monitor && 6270 nl80211_create_monitor_interface(drv)) 6271 return -1; 6272#endif 6273 6274 if (drv->device_ap_sme && 6275 wpa_driver_nl80211_probe_req_report(bss, 1) < 0) { 6276 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable " 6277 "Probe Request frame reporting in AP mode"); 6278 /* Try to survive without this */ 6279 } 6280 6281 return 0; 6282} 6283 6284 6285static void nl80211_teardown_ap(struct i802_bss *bss) 6286{ 6287 struct wpa_driver_nl80211_data *drv = bss->drv; 6288 6289 if (drv->device_ap_sme) { 6290 wpa_driver_nl80211_probe_req_report(bss, 0); 6291 if (!drv->use_monitor) 6292 nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)"); 6293 } else if (drv->use_monitor) 6294 nl80211_remove_monitor_interface(drv); 6295 else 6296 nl80211_mgmt_unsubscribe(bss, "AP teardown"); 6297 6298 bss->beacon_set = 0; 6299} 6300 6301 6302static int nl80211_send_eapol_data(struct i802_bss *bss, 6303 const u8 *addr, const u8 *data, 6304 size_t data_len) 6305{ 6306 struct sockaddr_ll ll; 6307 int ret; 6308 6309 if (bss->drv->eapol_tx_sock < 0) { 6310 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL"); 6311 return -1; 6312 } 6313 6314 os_memset(&ll, 0, sizeof(ll)); 6315 ll.sll_family = AF_PACKET; 6316 ll.sll_ifindex = bss->ifindex; 6317 ll.sll_protocol = htons(ETH_P_PAE); 6318 ll.sll_halen = ETH_ALEN; 6319 os_memcpy(ll.sll_addr, addr, ETH_ALEN); 6320 ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0, 6321 (struct sockaddr *) &ll, sizeof(ll)); 6322 if (ret < 0) 6323 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s", 6324 strerror(errno)); 6325 6326 return ret; 6327} 6328 6329 6330static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 6331 6332static int wpa_driver_nl80211_hapd_send_eapol( 6333 void *priv, const u8 *addr, const u8 *data, 6334 size_t data_len, int encrypt, const u8 *own_addr, u32 flags) 6335{ 6336 struct i802_bss *bss = priv; 6337 struct wpa_driver_nl80211_data *drv = bss->drv; 6338 struct ieee80211_hdr *hdr; 6339 size_t len; 6340 u8 *pos; 6341 int res; 6342 int qos = flags & WPA_STA_WMM; 6343#ifndef ANDROID_P2P 6344 if (drv->device_ap_sme || !drv->use_monitor) 6345#else 6346 if (drv->device_ap_sme && !drv->use_monitor) 6347#endif 6348 return nl80211_send_eapol_data(bss, addr, data, data_len); 6349 6350 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 + 6351 data_len; 6352 hdr = os_zalloc(len); 6353 if (hdr == NULL) { 6354 printf("malloc() failed for i802_send_data(len=%lu)\n", 6355 (unsigned long) len); 6356 return -1; 6357 } 6358 6359 hdr->frame_control = 6360 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA); 6361 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS); 6362 if (encrypt) 6363 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP); 6364 if (qos) { 6365 hdr->frame_control |= 6366 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4); 6367 } 6368 6369 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN); 6370 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 6371 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 6372 pos = (u8 *) (hdr + 1); 6373 6374 if (qos) { 6375 /* add an empty QoS header if needed */ 6376 pos[0] = 0; 6377 pos[1] = 0; 6378 pos += 2; 6379 } 6380 6381 memcpy(pos, rfc1042_header, sizeof(rfc1042_header)); 6382 pos += sizeof(rfc1042_header); 6383 WPA_PUT_BE16(pos, ETH_P_PAE); 6384 pos += 2; 6385 memcpy(pos, data, data_len); 6386 6387 res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0, 6388 0, 0, 0, 0); 6389 if (res < 0) { 6390 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - " 6391 "failed: %d (%s)", 6392 (unsigned long) len, errno, strerror(errno)); 6393 } 6394 os_free(hdr); 6395 6396 return res; 6397} 6398 6399 6400static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr, 6401 int total_flags, 6402 int flags_or, int flags_and) 6403{ 6404 struct i802_bss *bss = priv; 6405 struct wpa_driver_nl80211_data *drv = bss->drv; 6406 struct nl_msg *msg, *flags = NULL; 6407 struct nl80211_sta_flag_update upd; 6408 6409 msg = nlmsg_alloc(); 6410 if (!msg) 6411 return -ENOMEM; 6412 6413 flags = nlmsg_alloc(); 6414 if (!flags) { 6415 nlmsg_free(msg); 6416 return -ENOMEM; 6417 } 6418 6419 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 6420 6421 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 6422 if_nametoindex(bss->ifname)); 6423 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 6424 6425 /* 6426 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This 6427 * can be removed eventually. 6428 */ 6429 if (total_flags & WPA_STA_AUTHORIZED) 6430 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED); 6431 6432 if (total_flags & WPA_STA_WMM) 6433 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME); 6434 6435 if (total_flags & WPA_STA_SHORT_PREAMBLE) 6436 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE); 6437 6438 if (total_flags & WPA_STA_MFP) 6439 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP); 6440 6441 if (total_flags & WPA_STA_TDLS_PEER) 6442 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_TDLS_PEER); 6443 6444 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags)) 6445 goto nla_put_failure; 6446 6447 os_memset(&upd, 0, sizeof(upd)); 6448 upd.mask = sta_flags_nl80211(flags_or | ~flags_and); 6449 upd.set = sta_flags_nl80211(flags_or); 6450 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 6451 6452 nlmsg_free(flags); 6453 6454 return send_and_recv_msgs(drv, msg, NULL, NULL); 6455 nla_put_failure: 6456 nlmsg_free(msg); 6457 nlmsg_free(flags); 6458 return -ENOBUFS; 6459} 6460 6461 6462static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv, 6463 struct wpa_driver_associate_params *params) 6464{ 6465 enum nl80211_iftype nlmode; 6466 6467 if (params->p2p) { 6468 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P " 6469 "group (GO)"); 6470 nlmode = NL80211_IFTYPE_P2P_GO; 6471 } else 6472 nlmode = NL80211_IFTYPE_AP; 6473 6474 if (wpa_driver_nl80211_set_mode(&drv->first_bss, nlmode) || 6475 wpa_driver_nl80211_set_freq(&drv->first_bss, params->freq, 0, 0)) { 6476 nl80211_remove_monitor_interface(drv); 6477 return -1; 6478 } 6479 6480 return 0; 6481} 6482 6483 6484static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv) 6485{ 6486 struct nl_msg *msg; 6487 int ret = -1; 6488 6489 msg = nlmsg_alloc(); 6490 if (!msg) 6491 return -1; 6492 6493 nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS); 6494 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6495 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6496 msg = NULL; 6497 if (ret) { 6498 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d " 6499 "(%s)", ret, strerror(-ret)); 6500 goto nla_put_failure; 6501 } 6502 6503 ret = 0; 6504 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully"); 6505 6506nla_put_failure: 6507 nlmsg_free(msg); 6508 return ret; 6509} 6510 6511 6512static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv, 6513 struct wpa_driver_associate_params *params) 6514{ 6515 struct nl_msg *msg; 6516 int ret = -1; 6517 int count = 0; 6518 6519 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex); 6520 6521 if (wpa_driver_nl80211_set_mode(&drv->first_bss, 6522 NL80211_IFTYPE_ADHOC)) { 6523 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into " 6524 "IBSS mode"); 6525 return -1; 6526 } 6527 6528retry: 6529 msg = nlmsg_alloc(); 6530 if (!msg) 6531 return -1; 6532 6533 nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS); 6534 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6535 6536 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid)) 6537 goto nla_put_failure; 6538 6539 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 6540 params->ssid, params->ssid_len); 6541 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 6542 params->ssid); 6543 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 6544 drv->ssid_len = params->ssid_len; 6545 6546 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 6547 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 6548 6549 ret = nl80211_set_conn_keys(params, msg); 6550 if (ret) 6551 goto nla_put_failure; 6552 6553 if (params->bssid && params->fixed_bssid) { 6554 wpa_printf(MSG_DEBUG, " * BSSID=" MACSTR, 6555 MAC2STR(params->bssid)); 6556 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 6557 } 6558 6559 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 6560 params->key_mgmt_suite == KEY_MGMT_PSK || 6561 params->key_mgmt_suite == KEY_MGMT_802_1X_SHA256 || 6562 params->key_mgmt_suite == KEY_MGMT_PSK_SHA256) { 6563 wpa_printf(MSG_DEBUG, " * control port"); 6564 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 6565 } 6566 6567 if (params->wpa_ie) { 6568 wpa_hexdump(MSG_DEBUG, 6569 " * Extra IEs for Beacon/Probe Response frames", 6570 params->wpa_ie, params->wpa_ie_len); 6571 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 6572 params->wpa_ie); 6573 } 6574 6575 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6576 msg = NULL; 6577 if (ret) { 6578 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)", 6579 ret, strerror(-ret)); 6580 count++; 6581 if (ret == -EALREADY && count == 1) { 6582 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after " 6583 "forced leave"); 6584 nl80211_leave_ibss(drv); 6585 nlmsg_free(msg); 6586 goto retry; 6587 } 6588 6589 goto nla_put_failure; 6590 } 6591 ret = 0; 6592 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully"); 6593 6594nla_put_failure: 6595 nlmsg_free(msg); 6596 return ret; 6597} 6598 6599 6600static unsigned int nl80211_get_assoc_bssid(struct wpa_driver_nl80211_data *drv, 6601 u8 *bssid) 6602{ 6603 struct nl_msg *msg; 6604 int ret; 6605 struct nl80211_bss_info_arg arg; 6606 6607 os_memset(&arg, 0, sizeof(arg)); 6608 msg = nlmsg_alloc(); 6609 if (!msg) 6610 goto nla_put_failure; 6611 6612 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 6613 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6614 6615 arg.drv = drv; 6616 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 6617 msg = NULL; 6618 if (ret == 0) { 6619 if (is_zero_ether_addr(arg.assoc_bssid)) 6620 return -ENOTCONN; 6621 os_memcpy(bssid, arg.assoc_bssid, ETH_ALEN); 6622 return 0; 6623 } 6624 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 6625 "(%s)", ret, strerror(-ret)); 6626nla_put_failure: 6627 nlmsg_free(msg); 6628 return drv->assoc_freq; 6629} 6630 6631 6632static int nl80211_disconnect(struct wpa_driver_nl80211_data *drv, 6633 const u8 *bssid) 6634{ 6635 u8 addr[ETH_ALEN]; 6636 6637 if (bssid == NULL) { 6638 int res = nl80211_get_assoc_bssid(drv, addr); 6639 if (res) 6640 return res; 6641 bssid = addr; 6642 } 6643 6644 return wpa_driver_nl80211_disconnect(drv, bssid, 6645 WLAN_REASON_PREV_AUTH_NOT_VALID); 6646} 6647 6648 6649static int wpa_driver_nl80211_connect( 6650 struct wpa_driver_nl80211_data *drv, 6651 struct wpa_driver_associate_params *params) 6652{ 6653 struct nl_msg *msg; 6654 enum nl80211_auth_type type; 6655 int ret = 0; 6656 int algs; 6657 6658 msg = nlmsg_alloc(); 6659 if (!msg) 6660 return -1; 6661 6662 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex); 6663 nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT); 6664 6665 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6666 if (params->bssid) { 6667 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 6668 MAC2STR(params->bssid)); 6669 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 6670 } 6671 if (params->freq) { 6672 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 6673 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 6674 } 6675 if (params->bg_scan_period >= 0) { 6676 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 6677 params->bg_scan_period); 6678 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 6679 params->bg_scan_period); 6680 } 6681 if (params->ssid) { 6682 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 6683 params->ssid, params->ssid_len); 6684 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 6685 params->ssid); 6686 if (params->ssid_len > sizeof(drv->ssid)) 6687 goto nla_put_failure; 6688 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 6689 drv->ssid_len = params->ssid_len; 6690 } 6691 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 6692 if (params->wpa_ie) 6693 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 6694 params->wpa_ie); 6695 6696 algs = 0; 6697 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 6698 algs++; 6699 if (params->auth_alg & WPA_AUTH_ALG_SHARED) 6700 algs++; 6701 if (params->auth_alg & WPA_AUTH_ALG_LEAP) 6702 algs++; 6703 if (algs > 1) { 6704 wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic " 6705 "selection"); 6706 goto skip_auth_type; 6707 } 6708 6709 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 6710 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 6711 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 6712 type = NL80211_AUTHTYPE_SHARED_KEY; 6713 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 6714 type = NL80211_AUTHTYPE_NETWORK_EAP; 6715 else if (params->auth_alg & WPA_AUTH_ALG_FT) 6716 type = NL80211_AUTHTYPE_FT; 6717 else 6718 goto nla_put_failure; 6719 6720 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 6721 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 6722 6723skip_auth_type: 6724 if (params->wpa_proto) { 6725 enum nl80211_wpa_versions ver = 0; 6726 6727 if (params->wpa_proto & WPA_PROTO_WPA) 6728 ver |= NL80211_WPA_VERSION_1; 6729 if (params->wpa_proto & WPA_PROTO_RSN) 6730 ver |= NL80211_WPA_VERSION_2; 6731 6732 wpa_printf(MSG_DEBUG, " * WPA Versions 0x%x", ver); 6733 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 6734 } 6735 6736 if (params->pairwise_suite != CIPHER_NONE) { 6737 int cipher; 6738 6739 switch (params->pairwise_suite) { 6740 case CIPHER_WEP40: 6741 cipher = WLAN_CIPHER_SUITE_WEP40; 6742 break; 6743 case CIPHER_WEP104: 6744 cipher = WLAN_CIPHER_SUITE_WEP104; 6745 break; 6746 case CIPHER_CCMP: 6747 cipher = WLAN_CIPHER_SUITE_CCMP; 6748 break; 6749 case CIPHER_TKIP: 6750 default: 6751 cipher = WLAN_CIPHER_SUITE_TKIP; 6752 break; 6753 } 6754 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 6755 } 6756 6757 if (params->group_suite != CIPHER_NONE) { 6758 int cipher; 6759 6760 switch (params->group_suite) { 6761 case CIPHER_WEP40: 6762 cipher = WLAN_CIPHER_SUITE_WEP40; 6763 break; 6764 case CIPHER_WEP104: 6765 cipher = WLAN_CIPHER_SUITE_WEP104; 6766 break; 6767 case CIPHER_CCMP: 6768 cipher = WLAN_CIPHER_SUITE_CCMP; 6769 break; 6770 case CIPHER_TKIP: 6771 default: 6772 cipher = WLAN_CIPHER_SUITE_TKIP; 6773 break; 6774 } 6775 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 6776 } 6777 6778 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 6779 params->key_mgmt_suite == KEY_MGMT_PSK) { 6780 int mgmt = WLAN_AKM_SUITE_PSK; 6781 6782 switch (params->key_mgmt_suite) { 6783 case KEY_MGMT_802_1X: 6784 mgmt = WLAN_AKM_SUITE_8021X; 6785 break; 6786 case KEY_MGMT_PSK: 6787 default: 6788 mgmt = WLAN_AKM_SUITE_PSK; 6789 break; 6790 } 6791 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt); 6792 } 6793 6794 if (params->disable_ht) 6795 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 6796 6797 if (params->htcaps && params->htcaps_mask) { 6798 int sz = sizeof(struct ieee80211_ht_capabilities); 6799 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 6800 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 6801 params->htcaps_mask); 6802 } 6803 6804 ret = nl80211_set_conn_keys(params, msg); 6805 if (ret) 6806 goto nla_put_failure; 6807 6808 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6809 msg = NULL; 6810 if (ret) { 6811 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d " 6812 "(%s)", ret, strerror(-ret)); 6813 /* 6814 * cfg80211 does not currently accept new connection if we are 6815 * already connected. As a workaround, force disconnection and 6816 * try again once the driver indicates it completed 6817 * disconnection. 6818 */ 6819 if (ret == -EALREADY) 6820 nl80211_disconnect(drv, params->bssid); 6821 goto nla_put_failure; 6822 } 6823 ret = 0; 6824 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully"); 6825 6826nla_put_failure: 6827 nlmsg_free(msg); 6828 return ret; 6829 6830} 6831 6832 6833static int wpa_driver_nl80211_associate( 6834 void *priv, struct wpa_driver_associate_params *params) 6835{ 6836 struct i802_bss *bss = priv; 6837 struct wpa_driver_nl80211_data *drv = bss->drv; 6838 int ret = -1; 6839 struct nl_msg *msg; 6840 6841 if (params->mode == IEEE80211_MODE_AP) 6842 return wpa_driver_nl80211_ap(drv, params); 6843 6844 if (params->mode == IEEE80211_MODE_IBSS) 6845 return wpa_driver_nl80211_ibss(drv, params); 6846 6847 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) { 6848 enum nl80211_iftype nlmode = params->p2p ? 6849 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 6850 6851 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0) 6852 return -1; 6853 return wpa_driver_nl80211_connect(drv, params); 6854 } 6855 6856 drv->associated = 0; 6857 6858 msg = nlmsg_alloc(); 6859 if (!msg) 6860 return -1; 6861 6862 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)", 6863 drv->ifindex); 6864 nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE); 6865 6866 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6867 if (params->bssid) { 6868 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 6869 MAC2STR(params->bssid)); 6870 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 6871 } 6872 if (params->freq) { 6873 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 6874 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 6875 drv->assoc_freq = params->freq; 6876 } else 6877 drv->assoc_freq = 0; 6878 if (params->bg_scan_period >= 0) { 6879 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 6880 params->bg_scan_period); 6881 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 6882 params->bg_scan_period); 6883 } 6884 if (params->ssid) { 6885 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 6886 params->ssid, params->ssid_len); 6887 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 6888 params->ssid); 6889 if (params->ssid_len > sizeof(drv->ssid)) 6890 goto nla_put_failure; 6891 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 6892 drv->ssid_len = params->ssid_len; 6893 } 6894 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 6895 if (params->wpa_ie) 6896 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 6897 params->wpa_ie); 6898 6899 if (params->pairwise_suite != CIPHER_NONE) { 6900 int cipher; 6901 6902 switch (params->pairwise_suite) { 6903 case CIPHER_WEP40: 6904 cipher = WLAN_CIPHER_SUITE_WEP40; 6905 break; 6906 case CIPHER_WEP104: 6907 cipher = WLAN_CIPHER_SUITE_WEP104; 6908 break; 6909 case CIPHER_CCMP: 6910 cipher = WLAN_CIPHER_SUITE_CCMP; 6911 break; 6912 case CIPHER_TKIP: 6913 default: 6914 cipher = WLAN_CIPHER_SUITE_TKIP; 6915 break; 6916 } 6917 wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher); 6918 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 6919 } 6920 6921 if (params->group_suite != CIPHER_NONE) { 6922 int cipher; 6923 6924 switch (params->group_suite) { 6925 case CIPHER_WEP40: 6926 cipher = WLAN_CIPHER_SUITE_WEP40; 6927 break; 6928 case CIPHER_WEP104: 6929 cipher = WLAN_CIPHER_SUITE_WEP104; 6930 break; 6931 case CIPHER_CCMP: 6932 cipher = WLAN_CIPHER_SUITE_CCMP; 6933 break; 6934 case CIPHER_TKIP: 6935 default: 6936 cipher = WLAN_CIPHER_SUITE_TKIP; 6937 break; 6938 } 6939 wpa_printf(MSG_DEBUG, " * group=0x%x", cipher); 6940 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 6941 } 6942 6943#ifdef CONFIG_IEEE80211W 6944 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED) 6945 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED); 6946#endif /* CONFIG_IEEE80211W */ 6947 6948 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 6949 6950 if (params->prev_bssid) { 6951 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR, 6952 MAC2STR(params->prev_bssid)); 6953 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN, 6954 params->prev_bssid); 6955 } 6956 6957 if (params->disable_ht) 6958 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 6959 6960 if (params->htcaps && params->htcaps_mask) { 6961 int sz = sizeof(struct ieee80211_ht_capabilities); 6962 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 6963 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 6964 params->htcaps_mask); 6965 } 6966 6967 if (params->p2p) 6968 wpa_printf(MSG_DEBUG, " * P2P group"); 6969 6970 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6971 msg = NULL; 6972 if (ret) { 6973 wpa_dbg(drv->ctx, MSG_DEBUG, 6974 "nl80211: MLME command failed (assoc): ret=%d (%s)", 6975 ret, strerror(-ret)); 6976 nl80211_dump_scan(drv); 6977 goto nla_put_failure; 6978 } 6979 ret = 0; 6980 wpa_printf(MSG_DEBUG, "nl80211: Association request send " 6981 "successfully"); 6982 6983nla_put_failure: 6984 nlmsg_free(msg); 6985 return ret; 6986} 6987 6988 6989static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv, 6990 int ifindex, enum nl80211_iftype mode) 6991{ 6992 struct nl_msg *msg; 6993 int ret = -ENOBUFS; 6994 6995 wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)", 6996 ifindex, mode, nl80211_iftype_str(mode)); 6997 6998 msg = nlmsg_alloc(); 6999 if (!msg) 7000 return -ENOMEM; 7001 7002 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE); 7003 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 7004 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode); 7005 7006 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7007 msg = NULL; 7008 if (!ret) 7009 return 0; 7010nla_put_failure: 7011 nlmsg_free(msg); 7012 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:" 7013 " %d (%s)", ifindex, mode, ret, strerror(-ret)); 7014 return ret; 7015} 7016 7017 7018static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, 7019 enum nl80211_iftype nlmode) 7020{ 7021 struct wpa_driver_nl80211_data *drv = bss->drv; 7022 int ret = -1; 7023 int i; 7024 int was_ap = is_ap_interface(drv->nlmode); 7025 int res; 7026 7027 res = nl80211_set_mode(drv, drv->ifindex, nlmode); 7028 if (res == 0) { 7029 drv->nlmode = nlmode; 7030 ret = 0; 7031 goto done; 7032 } 7033 7034 if (res == -ENODEV) 7035 return -1; 7036 7037 if (nlmode == drv->nlmode) { 7038 wpa_printf(MSG_DEBUG, "nl80211: Interface already in " 7039 "requested mode - ignore error"); 7040 ret = 0; 7041 goto done; /* Already in the requested mode */ 7042 } 7043 7044 /* mac80211 doesn't allow mode changes while the device is up, so 7045 * take the device down, try to set the mode again, and bring the 7046 * device back up. 7047 */ 7048 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting " 7049 "interface down"); 7050 for (i = 0; i < 10; i++) { 7051 res = linux_set_iface_flags(drv->global->ioctl_sock, 7052 bss->ifname, 0); 7053 if (res == -EACCES || res == -ENODEV) 7054 break; 7055 if (res == 0) { 7056 /* Try to set the mode again while the interface is 7057 * down */ 7058 ret = nl80211_set_mode(drv, drv->ifindex, nlmode); 7059 if (ret == -EACCES) 7060 break; 7061 res = linux_set_iface_flags(drv->global->ioctl_sock, 7062 bss->ifname, 1); 7063 if (res && !ret) 7064 ret = -1; 7065 else if (ret != -EBUSY) 7066 break; 7067 } else 7068 wpa_printf(MSG_DEBUG, "nl80211: Failed to set " 7069 "interface down"); 7070 os_sleep(0, 100000); 7071 } 7072 7073 if (!ret) { 7074 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while " 7075 "interface is down"); 7076 drv->nlmode = nlmode; 7077 drv->ignore_if_down_event = 1; 7078 } 7079 7080done: 7081 if (ret) { 7082 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d " 7083 "from %d failed", nlmode, drv->nlmode); 7084 return ret; 7085 } 7086 7087 if (is_ap_interface(nlmode)) { 7088 nl80211_mgmt_unsubscribe(bss, "start AP"); 7089 /* Setup additional AP mode functionality if needed */ 7090 if (nl80211_setup_ap(bss)) 7091 return -1; 7092 } else if (was_ap) { 7093 /* Remove additional AP mode functionality */ 7094 nl80211_teardown_ap(bss); 7095 } else { 7096 nl80211_mgmt_unsubscribe(bss, "mode change"); 7097 } 7098 7099 if (!bss->in_deinit && !is_ap_interface(nlmode) && 7100 nl80211_mgmt_subscribe_non_ap(bss) < 0) 7101 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action " 7102 "frame processing - ignore for now"); 7103 7104 return 0; 7105} 7106 7107 7108static int wpa_driver_nl80211_get_capa(void *priv, 7109 struct wpa_driver_capa *capa) 7110{ 7111 struct i802_bss *bss = priv; 7112 struct wpa_driver_nl80211_data *drv = bss->drv; 7113 if (!drv->has_capability) 7114 return -1; 7115 os_memcpy(capa, &drv->capa, sizeof(*capa)); 7116 return 0; 7117} 7118 7119 7120static int wpa_driver_nl80211_set_operstate(void *priv, int state) 7121{ 7122 struct i802_bss *bss = priv; 7123 struct wpa_driver_nl80211_data *drv = bss->drv; 7124 7125 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)", 7126 __func__, drv->operstate, state, state ? "UP" : "DORMANT"); 7127 drv->operstate = state; 7128 return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1, 7129 state ? IF_OPER_UP : IF_OPER_DORMANT); 7130} 7131 7132 7133static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized) 7134{ 7135 struct i802_bss *bss = priv; 7136 struct wpa_driver_nl80211_data *drv = bss->drv; 7137 struct nl_msg *msg; 7138 struct nl80211_sta_flag_update upd; 7139 7140 msg = nlmsg_alloc(); 7141 if (!msg) 7142 return -ENOMEM; 7143 7144 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 7145 7146 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7147 if_nametoindex(bss->ifname)); 7148 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 7149 7150 os_memset(&upd, 0, sizeof(upd)); 7151 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED); 7152 if (authorized) 7153 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED); 7154 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 7155 7156 return send_and_recv_msgs(drv, msg, NULL, NULL); 7157 nla_put_failure: 7158 nlmsg_free(msg); 7159 return -ENOBUFS; 7160} 7161 7162 7163/* Set kernel driver on given frequency (MHz) */ 7164static int i802_set_freq(void *priv, struct hostapd_freq_params *freq) 7165{ 7166 struct i802_bss *bss = priv; 7167 return wpa_driver_nl80211_set_freq(bss, freq->freq, freq->ht_enabled, 7168 freq->sec_channel_offset); 7169} 7170 7171 7172#if defined(HOSTAPD) || defined(CONFIG_AP) 7173 7174static inline int min_int(int a, int b) 7175{ 7176 if (a < b) 7177 return a; 7178 return b; 7179} 7180 7181 7182static int get_key_handler(struct nl_msg *msg, void *arg) 7183{ 7184 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7185 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7186 7187 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7188 genlmsg_attrlen(gnlh, 0), NULL); 7189 7190 /* 7191 * TODO: validate the key index and mac address! 7192 * Otherwise, there's a race condition as soon as 7193 * the kernel starts sending key notifications. 7194 */ 7195 7196 if (tb[NL80211_ATTR_KEY_SEQ]) 7197 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]), 7198 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6)); 7199 return NL_SKIP; 7200} 7201 7202 7203static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr, 7204 int idx, u8 *seq) 7205{ 7206 struct i802_bss *bss = priv; 7207 struct wpa_driver_nl80211_data *drv = bss->drv; 7208 struct nl_msg *msg; 7209 7210 msg = nlmsg_alloc(); 7211 if (!msg) 7212 return -ENOMEM; 7213 7214 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY); 7215 7216 if (addr) 7217 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7218 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx); 7219 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface)); 7220 7221 memset(seq, 0, 6); 7222 7223 return send_and_recv_msgs(drv, msg, get_key_handler, seq); 7224 nla_put_failure: 7225 nlmsg_free(msg); 7226 return -ENOBUFS; 7227} 7228 7229 7230static int i802_set_rts(void *priv, int rts) 7231{ 7232 struct i802_bss *bss = priv; 7233 struct wpa_driver_nl80211_data *drv = bss->drv; 7234 struct nl_msg *msg; 7235 int ret = -ENOBUFS; 7236 u32 val; 7237 7238 msg = nlmsg_alloc(); 7239 if (!msg) 7240 return -ENOMEM; 7241 7242 if (rts >= 2347) 7243 val = (u32) -1; 7244 else 7245 val = rts; 7246 7247 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7248 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7249 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val); 7250 7251 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7252 msg = NULL; 7253 if (!ret) 7254 return 0; 7255nla_put_failure: 7256 nlmsg_free(msg); 7257 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: " 7258 "%d (%s)", rts, ret, strerror(-ret)); 7259 return ret; 7260} 7261 7262 7263static int i802_set_frag(void *priv, int frag) 7264{ 7265 struct i802_bss *bss = priv; 7266 struct wpa_driver_nl80211_data *drv = bss->drv; 7267 struct nl_msg *msg; 7268 int ret = -ENOBUFS; 7269 u32 val; 7270 7271 msg = nlmsg_alloc(); 7272 if (!msg) 7273 return -ENOMEM; 7274 7275 if (frag >= 2346) 7276 val = (u32) -1; 7277 else 7278 val = frag; 7279 7280 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7281 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7282 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val); 7283 7284 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7285 msg = NULL; 7286 if (!ret) 7287 return 0; 7288nla_put_failure: 7289 nlmsg_free(msg); 7290 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold " 7291 "%d: %d (%s)", frag, ret, strerror(-ret)); 7292 return ret; 7293} 7294 7295 7296static int i802_flush(void *priv) 7297{ 7298 struct i802_bss *bss = priv; 7299 struct wpa_driver_nl80211_data *drv = bss->drv; 7300 struct nl_msg *msg; 7301 int res; 7302 7303 msg = nlmsg_alloc(); 7304 if (!msg) 7305 return -1; 7306 7307 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 7308 7309 /* 7310 * XXX: FIX! this needs to flush all VLANs too 7311 */ 7312 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7313 if_nametoindex(bss->ifname)); 7314 7315 res = send_and_recv_msgs(drv, msg, NULL, NULL); 7316 if (res) { 7317 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d " 7318 "(%s)", res, strerror(-res)); 7319 } 7320 return res; 7321 nla_put_failure: 7322 nlmsg_free(msg); 7323 return -ENOBUFS; 7324} 7325 7326 7327static int get_sta_handler(struct nl_msg *msg, void *arg) 7328{ 7329 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7330 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7331 struct hostap_sta_driver_data *data = arg; 7332 struct nlattr *stats[NL80211_STA_INFO_MAX + 1]; 7333 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = { 7334 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 }, 7335 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 }, 7336 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 }, 7337 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 }, 7338 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 }, 7339 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 }, 7340 }; 7341 7342 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7343 genlmsg_attrlen(gnlh, 0), NULL); 7344 7345 /* 7346 * TODO: validate the interface and mac address! 7347 * Otherwise, there's a race condition as soon as 7348 * the kernel starts sending station notifications. 7349 */ 7350 7351 if (!tb[NL80211_ATTR_STA_INFO]) { 7352 wpa_printf(MSG_DEBUG, "sta stats missing!"); 7353 return NL_SKIP; 7354 } 7355 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX, 7356 tb[NL80211_ATTR_STA_INFO], 7357 stats_policy)) { 7358 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!"); 7359 return NL_SKIP; 7360 } 7361 7362 if (stats[NL80211_STA_INFO_INACTIVE_TIME]) 7363 data->inactive_msec = 7364 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]); 7365 if (stats[NL80211_STA_INFO_RX_BYTES]) 7366 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]); 7367 if (stats[NL80211_STA_INFO_TX_BYTES]) 7368 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]); 7369 if (stats[NL80211_STA_INFO_RX_PACKETS]) 7370 data->rx_packets = 7371 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]); 7372 if (stats[NL80211_STA_INFO_TX_PACKETS]) 7373 data->tx_packets = 7374 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]); 7375 if (stats[NL80211_STA_INFO_TX_FAILED]) 7376 data->tx_retry_failed = 7377 nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]); 7378 7379 return NL_SKIP; 7380} 7381 7382static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data, 7383 const u8 *addr) 7384{ 7385 struct i802_bss *bss = priv; 7386 struct wpa_driver_nl80211_data *drv = bss->drv; 7387 struct nl_msg *msg; 7388 7389 os_memset(data, 0, sizeof(*data)); 7390 msg = nlmsg_alloc(); 7391 if (!msg) 7392 return -ENOMEM; 7393 7394 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 7395 7396 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7397 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 7398 7399 return send_and_recv_msgs(drv, msg, get_sta_handler, data); 7400 nla_put_failure: 7401 nlmsg_free(msg); 7402 return -ENOBUFS; 7403} 7404 7405 7406static int i802_set_tx_queue_params(void *priv, int queue, int aifs, 7407 int cw_min, int cw_max, int burst_time) 7408{ 7409 struct i802_bss *bss = priv; 7410 struct wpa_driver_nl80211_data *drv = bss->drv; 7411 struct nl_msg *msg; 7412 struct nlattr *txq, *params; 7413 7414 msg = nlmsg_alloc(); 7415 if (!msg) 7416 return -1; 7417 7418 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7419 7420 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 7421 7422 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS); 7423 if (!txq) 7424 goto nla_put_failure; 7425 7426 /* We are only sending parameters for a single TXQ at a time */ 7427 params = nla_nest_start(msg, 1); 7428 if (!params) 7429 goto nla_put_failure; 7430 7431 switch (queue) { 7432 case 0: 7433 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO); 7434 break; 7435 case 1: 7436 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI); 7437 break; 7438 case 2: 7439 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE); 7440 break; 7441 case 3: 7442 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK); 7443 break; 7444 } 7445 /* Burst time is configured in units of 0.1 msec and TXOP parameter in 7446 * 32 usec, so need to convert the value here. */ 7447 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32); 7448 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min); 7449 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max); 7450 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs); 7451 7452 nla_nest_end(msg, params); 7453 7454 nla_nest_end(msg, txq); 7455 7456 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 7457 return 0; 7458 msg = NULL; 7459 nla_put_failure: 7460 nlmsg_free(msg); 7461 return -1; 7462} 7463 7464 7465static int i802_set_sta_vlan(void *priv, const u8 *addr, 7466 const char *ifname, int vlan_id) 7467{ 7468 struct i802_bss *bss = priv; 7469 struct wpa_driver_nl80211_data *drv = bss->drv; 7470 struct nl_msg *msg; 7471 int ret = -ENOBUFS; 7472 7473 msg = nlmsg_alloc(); 7474 if (!msg) 7475 return -ENOMEM; 7476 7477 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 7478 7479 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7480 if_nametoindex(bss->ifname)); 7481 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7482 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN, 7483 if_nametoindex(ifname)); 7484 7485 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7486 msg = NULL; 7487 if (ret < 0) { 7488 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr=" 7489 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)", 7490 MAC2STR(addr), ifname, vlan_id, ret, 7491 strerror(-ret)); 7492 } 7493 nla_put_failure: 7494 nlmsg_free(msg); 7495 return ret; 7496} 7497 7498 7499static int i802_get_inact_sec(void *priv, const u8 *addr) 7500{ 7501 struct hostap_sta_driver_data data; 7502 int ret; 7503 7504 data.inactive_msec = (unsigned long) -1; 7505 ret = i802_read_sta_data(priv, &data, addr); 7506 if (ret || data.inactive_msec == (unsigned long) -1) 7507 return -1; 7508 return data.inactive_msec / 1000; 7509} 7510 7511 7512static int i802_sta_clear_stats(void *priv, const u8 *addr) 7513{ 7514#if 0 7515 /* TODO */ 7516#endif 7517 return 0; 7518} 7519 7520 7521static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, 7522 int reason) 7523{ 7524 struct i802_bss *bss = priv; 7525 struct wpa_driver_nl80211_data *drv = bss->drv; 7526 struct ieee80211_mgmt mgmt; 7527 7528 if (drv->device_ap_sme) 7529 return wpa_driver_nl80211_sta_remove(bss, addr); 7530 7531 memset(&mgmt, 0, sizeof(mgmt)); 7532 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 7533 WLAN_FC_STYPE_DEAUTH); 7534 memcpy(mgmt.da, addr, ETH_ALEN); 7535 memcpy(mgmt.sa, own_addr, ETH_ALEN); 7536 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 7537 mgmt.u.deauth.reason_code = host_to_le16(reason); 7538 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 7539 IEEE80211_HDRLEN + 7540 sizeof(mgmt.u.deauth), 0); 7541} 7542 7543 7544static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr, 7545 int reason) 7546{ 7547 struct i802_bss *bss = priv; 7548 struct wpa_driver_nl80211_data *drv = bss->drv; 7549 struct ieee80211_mgmt mgmt; 7550 7551 if (drv->device_ap_sme) 7552 return wpa_driver_nl80211_sta_remove(bss, addr); 7553 7554 memset(&mgmt, 0, sizeof(mgmt)); 7555 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 7556 WLAN_FC_STYPE_DISASSOC); 7557 memcpy(mgmt.da, addr, ETH_ALEN); 7558 memcpy(mgmt.sa, own_addr, ETH_ALEN); 7559 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 7560 mgmt.u.disassoc.reason_code = host_to_le16(reason); 7561 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 7562 IEEE80211_HDRLEN + 7563 sizeof(mgmt.u.disassoc), 0); 7564} 7565 7566#endif /* HOSTAPD || CONFIG_AP */ 7567 7568#ifdef HOSTAPD 7569 7570static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 7571{ 7572 int i; 7573 int *old; 7574 7575 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d", 7576 ifidx); 7577 for (i = 0; i < drv->num_if_indices; i++) { 7578 if (drv->if_indices[i] == 0) { 7579 drv->if_indices[i] = ifidx; 7580 return; 7581 } 7582 } 7583 7584 if (drv->if_indices != drv->default_if_indices) 7585 old = drv->if_indices; 7586 else 7587 old = NULL; 7588 7589 drv->if_indices = os_realloc(old, 7590 sizeof(int) * (drv->num_if_indices + 1)); 7591 if (!drv->if_indices) { 7592 if (!old) 7593 drv->if_indices = drv->default_if_indices; 7594 else 7595 drv->if_indices = old; 7596 wpa_printf(MSG_ERROR, "Failed to reallocate memory for " 7597 "interfaces"); 7598 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx); 7599 return; 7600 } else if (!old) 7601 os_memcpy(drv->if_indices, drv->default_if_indices, 7602 sizeof(drv->default_if_indices)); 7603 drv->if_indices[drv->num_if_indices] = ifidx; 7604 drv->num_if_indices++; 7605} 7606 7607 7608static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 7609{ 7610 int i; 7611 7612 for (i = 0; i < drv->num_if_indices; i++) { 7613 if (drv->if_indices[i] == ifidx) { 7614 drv->if_indices[i] = 0; 7615 break; 7616 } 7617 } 7618} 7619 7620 7621static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 7622{ 7623 int i; 7624 7625 for (i = 0; i < drv->num_if_indices; i++) 7626 if (drv->if_indices[i] == ifidx) 7627 return 1; 7628 7629 return 0; 7630} 7631 7632 7633static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val, 7634 const char *bridge_ifname) 7635{ 7636 struct i802_bss *bss = priv; 7637 struct wpa_driver_nl80211_data *drv = bss->drv; 7638 char name[IFNAMSIZ + 1]; 7639 7640 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid); 7641 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR 7642 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name); 7643 if (val) { 7644 if (!if_nametoindex(name)) { 7645 if (nl80211_create_iface(drv, name, 7646 NL80211_IFTYPE_AP_VLAN, 7647 NULL, 1) < 0) 7648 return -1; 7649 if (bridge_ifname && 7650 linux_br_add_if(drv->global->ioctl_sock, 7651 bridge_ifname, name) < 0) 7652 return -1; 7653 } 7654 linux_set_iface_flags(drv->global->ioctl_sock, name, 1); 7655 return i802_set_sta_vlan(priv, addr, name, 0); 7656 } else { 7657 i802_set_sta_vlan(priv, addr, bss->ifname, 0); 7658 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN, 7659 name); 7660 } 7661} 7662 7663 7664static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx) 7665{ 7666 struct wpa_driver_nl80211_data *drv = eloop_ctx; 7667 struct sockaddr_ll lladdr; 7668 unsigned char buf[3000]; 7669 int len; 7670 socklen_t fromlen = sizeof(lladdr); 7671 7672 len = recvfrom(sock, buf, sizeof(buf), 0, 7673 (struct sockaddr *)&lladdr, &fromlen); 7674 if (len < 0) { 7675 perror("recv"); 7676 return; 7677 } 7678 7679 if (have_ifidx(drv, lladdr.sll_ifindex)) 7680 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len); 7681} 7682 7683 7684static int i802_check_bridge(struct wpa_driver_nl80211_data *drv, 7685 struct i802_bss *bss, 7686 const char *brname, const char *ifname) 7687{ 7688 int ifindex; 7689 char in_br[IFNAMSIZ]; 7690 7691 os_strlcpy(bss->brname, brname, IFNAMSIZ); 7692 ifindex = if_nametoindex(brname); 7693 if (ifindex == 0) { 7694 /* 7695 * Bridge was configured, but the bridge device does 7696 * not exist. Try to add it now. 7697 */ 7698 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) { 7699 wpa_printf(MSG_ERROR, "nl80211: Failed to add the " 7700 "bridge interface %s: %s", 7701 brname, strerror(errno)); 7702 return -1; 7703 } 7704 bss->added_bridge = 1; 7705 add_ifidx(drv, if_nametoindex(brname)); 7706 } 7707 7708 if (linux_br_get(in_br, ifname) == 0) { 7709 if (os_strcmp(in_br, brname) == 0) 7710 return 0; /* already in the bridge */ 7711 7712 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from " 7713 "bridge %s", ifname, in_br); 7714 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) < 7715 0) { 7716 wpa_printf(MSG_ERROR, "nl80211: Failed to " 7717 "remove interface %s from bridge " 7718 "%s: %s", 7719 ifname, brname, strerror(errno)); 7720 return -1; 7721 } 7722 } 7723 7724 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s", 7725 ifname, brname); 7726 if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) { 7727 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s " 7728 "into bridge %s: %s", 7729 ifname, brname, strerror(errno)); 7730 return -1; 7731 } 7732 bss->added_if_into_bridge = 1; 7733 7734 return 0; 7735} 7736 7737 7738static void *i802_init(struct hostapd_data *hapd, 7739 struct wpa_init_params *params) 7740{ 7741 struct wpa_driver_nl80211_data *drv; 7742 struct i802_bss *bss; 7743 size_t i; 7744 char brname[IFNAMSIZ]; 7745 int ifindex, br_ifindex; 7746 int br_added = 0; 7747 7748 bss = wpa_driver_nl80211_init(hapd, params->ifname, 7749 params->global_priv); 7750 if (bss == NULL) 7751 return NULL; 7752 7753 drv = bss->drv; 7754 drv->nlmode = NL80211_IFTYPE_AP; 7755 drv->eapol_sock = -1; 7756 7757 if (linux_br_get(brname, params->ifname) == 0) { 7758 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s", 7759 params->ifname, brname); 7760 br_ifindex = if_nametoindex(brname); 7761 } else { 7762 brname[0] = '\0'; 7763 br_ifindex = 0; 7764 } 7765 7766 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int); 7767 drv->if_indices = drv->default_if_indices; 7768 for (i = 0; i < params->num_bridge; i++) { 7769 if (params->bridge[i]) { 7770 ifindex = if_nametoindex(params->bridge[i]); 7771 if (ifindex) 7772 add_ifidx(drv, ifindex); 7773 if (ifindex == br_ifindex) 7774 br_added = 1; 7775 } 7776 } 7777 if (!br_added && br_ifindex && 7778 (params->num_bridge == 0 || !params->bridge[0])) 7779 add_ifidx(drv, br_ifindex); 7780 7781 /* start listening for EAPOL on the default AP interface */ 7782 add_ifidx(drv, drv->ifindex); 7783 7784 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0)) 7785 goto failed; 7786 7787 if (params->bssid) { 7788 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 7789 params->bssid)) 7790 goto failed; 7791 } 7792 7793 if (wpa_driver_nl80211_set_mode(bss, drv->nlmode)) { 7794 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s " 7795 "into AP mode", bss->ifname); 7796 goto failed; 7797 } 7798 7799 if (params->num_bridge && params->bridge[0] && 7800 i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0) 7801 goto failed; 7802 7803 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) 7804 goto failed; 7805 7806 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE)); 7807 if (drv->eapol_sock < 0) { 7808 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)"); 7809 goto failed; 7810 } 7811 7812 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL)) 7813 { 7814 printf("Could not register read socket for eapol\n"); 7815 goto failed; 7816 } 7817 7818 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 7819 params->own_addr)) 7820 goto failed; 7821 7822 memcpy(bss->addr, params->own_addr, ETH_ALEN); 7823 7824 return bss; 7825 7826failed: 7827 wpa_driver_nl80211_deinit(bss); 7828 return NULL; 7829} 7830 7831 7832static void i802_deinit(void *priv) 7833{ 7834 wpa_driver_nl80211_deinit(priv); 7835} 7836 7837#endif /* HOSTAPD */ 7838 7839 7840static enum nl80211_iftype wpa_driver_nl80211_if_type( 7841 enum wpa_driver_if_type type) 7842{ 7843 switch (type) { 7844 case WPA_IF_STATION: 7845 return NL80211_IFTYPE_STATION; 7846 case WPA_IF_P2P_CLIENT: 7847 case WPA_IF_P2P_GROUP: 7848 return NL80211_IFTYPE_P2P_CLIENT; 7849 case WPA_IF_AP_VLAN: 7850 return NL80211_IFTYPE_AP_VLAN; 7851 case WPA_IF_AP_BSS: 7852 return NL80211_IFTYPE_AP; 7853 case WPA_IF_P2P_GO: 7854 return NL80211_IFTYPE_P2P_GO; 7855 } 7856 return -1; 7857} 7858 7859 7860#ifdef CONFIG_P2P 7861 7862static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr) 7863{ 7864 struct wpa_driver_nl80211_data *drv; 7865 dl_list_for_each(drv, &global->interfaces, 7866 struct wpa_driver_nl80211_data, list) { 7867 if (os_memcmp(addr, drv->first_bss.addr, ETH_ALEN) == 0) 7868 return 1; 7869 } 7870 return 0; 7871} 7872 7873 7874static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv, 7875 u8 *new_addr) 7876{ 7877 unsigned int idx; 7878 7879 if (!drv->global) 7880 return -1; 7881 7882 os_memcpy(new_addr, drv->first_bss.addr, ETH_ALEN); 7883 for (idx = 0; idx < 64; idx++) { 7884 new_addr[0] = drv->first_bss.addr[0] | 0x02; 7885 new_addr[0] ^= idx << 2; 7886 if (!nl80211_addr_in_use(drv->global, new_addr)) 7887 break; 7888 } 7889 if (idx == 64) 7890 return -1; 7891 7892 wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address " 7893 MACSTR, MAC2STR(new_addr)); 7894 7895 return 0; 7896} 7897 7898#endif /* CONFIG_P2P */ 7899 7900 7901static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type, 7902 const char *ifname, const u8 *addr, 7903 void *bss_ctx, void **drv_priv, 7904 char *force_ifname, u8 *if_addr, 7905 const char *bridge) 7906{ 7907 struct i802_bss *bss = priv; 7908 struct wpa_driver_nl80211_data *drv = bss->drv; 7909 int ifidx; 7910#ifdef HOSTAPD 7911 struct i802_bss *new_bss = NULL; 7912 7913 if (type == WPA_IF_AP_BSS) { 7914 new_bss = os_zalloc(sizeof(*new_bss)); 7915 if (new_bss == NULL) 7916 return -1; 7917 } 7918#endif /* HOSTAPD */ 7919 7920 if (addr) 7921 os_memcpy(if_addr, addr, ETH_ALEN); 7922 ifidx = nl80211_create_iface(drv, ifname, 7923 wpa_driver_nl80211_if_type(type), addr, 7924 0); 7925 if (ifidx < 0) { 7926#ifdef HOSTAPD 7927 os_free(new_bss); 7928#endif /* HOSTAPD */ 7929 return -1; 7930 } 7931 7932 if (!addr && 7933 linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 7934 if_addr) < 0) { 7935 nl80211_remove_iface(drv, ifidx); 7936 return -1; 7937 } 7938 7939#ifdef CONFIG_P2P 7940 if (!addr && 7941 (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP || 7942 type == WPA_IF_P2P_GO)) { 7943 /* Enforce unique P2P Interface Address */ 7944 u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN]; 7945 7946 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 7947 own_addr) < 0 || 7948 linux_get_ifhwaddr(drv->global->ioctl_sock, ifname, 7949 new_addr) < 0) { 7950 nl80211_remove_iface(drv, ifidx); 7951 return -1; 7952 } 7953 if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) { 7954 wpa_printf(MSG_DEBUG, "nl80211: Allocate new address " 7955 "for P2P group interface"); 7956 if (nl80211_p2p_interface_addr(drv, new_addr) < 0) { 7957 nl80211_remove_iface(drv, ifidx); 7958 return -1; 7959 } 7960 if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, 7961 new_addr) < 0) { 7962 nl80211_remove_iface(drv, ifidx); 7963 return -1; 7964 } 7965 } 7966 os_memcpy(if_addr, new_addr, ETH_ALEN); 7967 } 7968#endif /* CONFIG_P2P */ 7969 7970#ifdef HOSTAPD 7971 if (bridge && 7972 i802_check_bridge(drv, new_bss, bridge, ifname) < 0) { 7973 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new " 7974 "interface %s to a bridge %s", ifname, bridge); 7975 nl80211_remove_iface(drv, ifidx); 7976 os_free(new_bss); 7977 return -1; 7978 } 7979 7980 if (type == WPA_IF_AP_BSS) { 7981 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1)) 7982 { 7983 nl80211_remove_iface(drv, ifidx); 7984 os_free(new_bss); 7985 return -1; 7986 } 7987 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ); 7988 os_memcpy(new_bss->addr, if_addr, ETH_ALEN); 7989 new_bss->ifindex = ifidx; 7990 new_bss->drv = drv; 7991 new_bss->next = drv->first_bss.next; 7992 new_bss->freq = drv->first_bss.freq; 7993 drv->first_bss.next = new_bss; 7994 if (drv_priv) 7995 *drv_priv = new_bss; 7996 nl80211_init_bss(new_bss); 7997 7998 /* Subscribe management frames for this WPA_IF_AP_BSS */ 7999 if (nl80211_setup_ap(new_bss)) 8000 return -1; 8001 } 8002#endif /* HOSTAPD */ 8003 8004 if (drv->global) 8005 drv->global->if_add_ifindex = ifidx; 8006 8007 return 0; 8008} 8009 8010 8011static int wpa_driver_nl80211_if_remove(void *priv, 8012 enum wpa_driver_if_type type, 8013 const char *ifname) 8014{ 8015 struct i802_bss *bss = priv; 8016 struct wpa_driver_nl80211_data *drv = bss->drv; 8017 int ifindex = if_nametoindex(ifname); 8018 8019 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d", 8020 __func__, type, ifname, ifindex); 8021 if (ifindex <= 0) 8022 return -1; 8023 8024#ifdef HOSTAPD 8025 if (bss->added_if_into_bridge) { 8026 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 8027 bss->ifname) < 0) 8028 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 8029 "interface %s from bridge %s: %s", 8030 bss->ifname, bss->brname, strerror(errno)); 8031 } 8032 if (bss->added_bridge) { 8033 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 8034 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 8035 "bridge %s: %s", 8036 bss->brname, strerror(errno)); 8037 } 8038#endif /* HOSTAPD */ 8039 8040 nl80211_remove_iface(drv, ifindex); 8041 8042#ifdef HOSTAPD 8043 if (type != WPA_IF_AP_BSS) 8044 return 0; 8045 8046 if (bss != &drv->first_bss) { 8047 struct i802_bss *tbss; 8048 8049 for (tbss = &drv->first_bss; tbss; tbss = tbss->next) { 8050 if (tbss->next == bss) { 8051 tbss->next = bss->next; 8052 /* Unsubscribe management frames */ 8053 nl80211_teardown_ap(bss); 8054 nl80211_destroy_bss(bss); 8055 os_free(bss); 8056 bss = NULL; 8057 break; 8058 } 8059 } 8060 if (bss) 8061 wpa_printf(MSG_INFO, "nl80211: %s - could not find " 8062 "BSS %p in the list", __func__, bss); 8063 } 8064#endif /* HOSTAPD */ 8065 8066 return 0; 8067} 8068 8069 8070static int cookie_handler(struct nl_msg *msg, void *arg) 8071{ 8072 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 8073 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 8074 u64 *cookie = arg; 8075 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 8076 genlmsg_attrlen(gnlh, 0), NULL); 8077 if (tb[NL80211_ATTR_COOKIE]) 8078 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 8079 return NL_SKIP; 8080} 8081 8082 8083static int nl80211_send_frame_cmd(struct i802_bss *bss, 8084 unsigned int freq, unsigned int wait, 8085 const u8 *buf, size_t buf_len, 8086 u64 *cookie_out, int no_cck, int no_ack, 8087 int offchanok) 8088{ 8089 struct wpa_driver_nl80211_data *drv = bss->drv; 8090 struct nl_msg *msg; 8091 u64 cookie; 8092 int ret = -1; 8093 8094 msg = nlmsg_alloc(); 8095 if (!msg) 8096 return -1; 8097 8098 wpa_printf(MSG_DEBUG, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d " 8099 "no_ack=%d offchanok=%d", 8100 freq, wait, no_cck, no_ack, offchanok); 8101 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME); 8102 8103 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8104 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 8105 if (wait) 8106 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait); 8107 if (offchanok && (drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX)) 8108 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK); 8109 if (no_cck) 8110 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 8111 if (no_ack) 8112 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK); 8113 8114 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf); 8115 8116 cookie = 0; 8117 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 8118 msg = NULL; 8119 if (ret) { 8120 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d " 8121 "(%s) (freq=%u wait=%u)", ret, strerror(-ret), 8122 freq, wait); 8123 goto nla_put_failure; 8124 } 8125 wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted%s; " 8126 "cookie 0x%llx", no_ack ? " (no ACK)" : "", 8127 (long long unsigned int) cookie); 8128 8129 if (cookie_out) 8130 *cookie_out = no_ack ? (u64) -1 : cookie; 8131 8132nla_put_failure: 8133 nlmsg_free(msg); 8134 return ret; 8135} 8136 8137 8138static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq, 8139 unsigned int wait_time, 8140 const u8 *dst, const u8 *src, 8141 const u8 *bssid, 8142 const u8 *data, size_t data_len, 8143 int no_cck) 8144{ 8145 struct i802_bss *bss = priv; 8146 struct wpa_driver_nl80211_data *drv = bss->drv; 8147 int ret = -1; 8148 u8 *buf; 8149 struct ieee80211_hdr *hdr; 8150 8151 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, " 8152 "freq=%u MHz wait=%d ms no_cck=%d)", 8153 drv->ifindex, freq, wait_time, no_cck); 8154 8155 buf = os_zalloc(24 + data_len); 8156 if (buf == NULL) 8157 return ret; 8158 os_memcpy(buf + 24, data, data_len); 8159 hdr = (struct ieee80211_hdr *) buf; 8160 hdr->frame_control = 8161 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION); 8162 os_memcpy(hdr->addr1, dst, ETH_ALEN); 8163 os_memcpy(hdr->addr2, src, ETH_ALEN); 8164 os_memcpy(hdr->addr3, bssid, ETH_ALEN); 8165 8166 if (is_ap_interface(drv->nlmode)) 8167 ret = wpa_driver_nl80211_send_mlme_freq(priv, buf, 8168 24 + data_len, 8169 0, freq, no_cck, 1, 8170 wait_time); 8171 else 8172 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf, 8173 24 + data_len, 8174 &drv->send_action_cookie, 8175 no_cck, 0, 1); 8176 8177 os_free(buf); 8178 return ret; 8179} 8180 8181 8182static void wpa_driver_nl80211_send_action_cancel_wait(void *priv) 8183{ 8184 struct i802_bss *bss = priv; 8185 struct wpa_driver_nl80211_data *drv = bss->drv; 8186 struct nl_msg *msg; 8187 int ret; 8188 8189 msg = nlmsg_alloc(); 8190 if (!msg) 8191 return; 8192 8193 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL); 8194 8195 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8196 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie); 8197 8198 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8199 msg = NULL; 8200 if (ret) 8201 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d " 8202 "(%s)", ret, strerror(-ret)); 8203 8204 nla_put_failure: 8205 nlmsg_free(msg); 8206} 8207 8208 8209static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq, 8210 unsigned int duration) 8211{ 8212 struct i802_bss *bss = priv; 8213 struct wpa_driver_nl80211_data *drv = bss->drv; 8214 struct nl_msg *msg; 8215 int ret; 8216 u64 cookie; 8217 8218 msg = nlmsg_alloc(); 8219 if (!msg) 8220 return -1; 8221 8222 nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL); 8223 8224 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8225 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 8226 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration); 8227 8228 cookie = 0; 8229 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 8230 msg = NULL; 8231 if (ret == 0) { 8232 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie " 8233 "0x%llx for freq=%u MHz duration=%u", 8234 (long long unsigned int) cookie, freq, duration); 8235 drv->remain_on_chan_cookie = cookie; 8236 drv->pending_remain_on_chan = 1; 8237 return 0; 8238 } 8239 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel " 8240 "(freq=%d duration=%u): %d (%s)", 8241 freq, duration, ret, strerror(-ret)); 8242nla_put_failure: 8243 nlmsg_free(msg); 8244 return -1; 8245} 8246 8247 8248static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv) 8249{ 8250 struct i802_bss *bss = priv; 8251 struct wpa_driver_nl80211_data *drv = bss->drv; 8252 struct nl_msg *msg; 8253 int ret; 8254 8255 if (!drv->pending_remain_on_chan) { 8256 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel " 8257 "to cancel"); 8258 return -1; 8259 } 8260 8261 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie " 8262 "0x%llx", 8263 (long long unsigned int) drv->remain_on_chan_cookie); 8264 8265 msg = nlmsg_alloc(); 8266 if (!msg) 8267 return -1; 8268 8269 nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL); 8270 8271 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8272 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie); 8273 8274 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8275 msg = NULL; 8276 if (ret == 0) 8277 return 0; 8278 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: " 8279 "%d (%s)", ret, strerror(-ret)); 8280nla_put_failure: 8281 nlmsg_free(msg); 8282 return -1; 8283} 8284 8285 8286static int wpa_driver_nl80211_probe_req_report(void *priv, int report) 8287{ 8288 struct i802_bss *bss = priv; 8289 struct wpa_driver_nl80211_data *drv = bss->drv; 8290 8291 if (!report) { 8292 if (bss->nl_preq && drv->device_ap_sme && 8293 is_ap_interface(drv->nlmode)) { 8294 /* 8295 * Do not disable Probe Request reporting that was 8296 * enabled in nl80211_setup_ap(). 8297 */ 8298 wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of " 8299 "Probe Request reporting nl_preq=%p while " 8300 "in AP mode", bss->nl_preq); 8301 } else if (bss->nl_preq) { 8302 wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request " 8303 "reporting nl_preq=%p", bss->nl_preq); 8304 eloop_unregister_read_sock( 8305 nl_socket_get_fd(bss->nl_preq)); 8306 nl_destroy_handles(&bss->nl_preq); 8307 } 8308 return 0; 8309 } 8310 8311 if (bss->nl_preq) { 8312 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting " 8313 "already on! nl_preq=%p", bss->nl_preq); 8314 return 0; 8315 } 8316 8317 bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq"); 8318 if (bss->nl_preq == NULL) 8319 return -1; 8320 wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request " 8321 "reporting nl_preq=%p", bss->nl_preq); 8322 8323 if (nl80211_register_frame(bss, bss->nl_preq, 8324 (WLAN_FC_TYPE_MGMT << 2) | 8325 (WLAN_FC_STYPE_PROBE_REQ << 4), 8326 NULL, 0) < 0) 8327 goto out_err; 8328 8329 eloop_register_read_sock(nl_socket_get_fd(bss->nl_preq), 8330 wpa_driver_nl80211_event_receive, bss->nl_cb, 8331 bss->nl_preq); 8332 8333 return 0; 8334 8335 out_err: 8336 nl_destroy_handles(&bss->nl_preq); 8337 return -1; 8338} 8339 8340 8341static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 8342 int ifindex, int disabled) 8343{ 8344 struct nl_msg *msg; 8345 struct nlattr *bands, *band; 8346 int ret; 8347 8348 msg = nlmsg_alloc(); 8349 if (!msg) 8350 return -1; 8351 8352 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK); 8353 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 8354 8355 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES); 8356 if (!bands) 8357 goto nla_put_failure; 8358 8359 /* 8360 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything 8361 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS 8362 * rates. All 5 GHz rates are left enabled. 8363 */ 8364 band = nla_nest_start(msg, NL80211_BAND_2GHZ); 8365 if (!band) 8366 goto nla_put_failure; 8367 if (disabled) { 8368 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8, 8369 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 8370 } 8371 nla_nest_end(msg, band); 8372 8373 nla_nest_end(msg, bands); 8374 8375 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8376 msg = NULL; 8377 if (ret) { 8378 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d " 8379 "(%s)", ret, strerror(-ret)); 8380 } 8381 return ret; 8382 8383nla_put_failure: 8384 nlmsg_free(msg); 8385 return -1; 8386} 8387 8388 8389static int wpa_driver_nl80211_deinit_ap(void *priv) 8390{ 8391 struct i802_bss *bss = priv; 8392 struct wpa_driver_nl80211_data *drv = bss->drv; 8393 if (!is_ap_interface(drv->nlmode)) 8394 return -1; 8395 wpa_driver_nl80211_del_beacon(drv); 8396 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 8397} 8398 8399 8400static int wpa_driver_nl80211_deinit_p2p_cli(void *priv) 8401{ 8402 struct i802_bss *bss = priv; 8403 struct wpa_driver_nl80211_data *drv = bss->drv; 8404 if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT) 8405 return -1; 8406 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 8407} 8408 8409 8410static void wpa_driver_nl80211_resume(void *priv) 8411{ 8412 struct i802_bss *bss = priv; 8413 struct wpa_driver_nl80211_data *drv = bss->drv; 8414 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { 8415 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on " 8416 "resume event"); 8417 } 8418} 8419 8420 8421static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap, 8422 const u8 *ies, size_t ies_len) 8423{ 8424 struct i802_bss *bss = priv; 8425 struct wpa_driver_nl80211_data *drv = bss->drv; 8426 int ret; 8427 u8 *data, *pos; 8428 size_t data_len; 8429 const u8 *own_addr = bss->addr; 8430 8431 if (action != 1) { 8432 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action " 8433 "action %d", action); 8434 return -1; 8435 } 8436 8437 /* 8438 * Action frame payload: 8439 * Category[1] = 6 (Fast BSS Transition) 8440 * Action[1] = 1 (Fast BSS Transition Request) 8441 * STA Address 8442 * Target AP Address 8443 * FT IEs 8444 */ 8445 8446 data_len = 2 + 2 * ETH_ALEN + ies_len; 8447 data = os_malloc(data_len); 8448 if (data == NULL) 8449 return -1; 8450 pos = data; 8451 *pos++ = 0x06; /* FT Action category */ 8452 *pos++ = action; 8453 os_memcpy(pos, own_addr, ETH_ALEN); 8454 pos += ETH_ALEN; 8455 os_memcpy(pos, target_ap, ETH_ALEN); 8456 pos += ETH_ALEN; 8457 os_memcpy(pos, ies, ies_len); 8458 8459 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0, 8460 drv->bssid, own_addr, drv->bssid, 8461 data, data_len, 0); 8462 os_free(data); 8463 8464 return ret; 8465} 8466 8467 8468static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis) 8469{ 8470 struct i802_bss *bss = priv; 8471 struct wpa_driver_nl80211_data *drv = bss->drv; 8472 struct nl_msg *msg, *cqm = NULL; 8473 8474 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d " 8475 "hysteresis=%d", threshold, hysteresis); 8476 8477 msg = nlmsg_alloc(); 8478 if (!msg) 8479 return -1; 8480 8481 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM); 8482 8483 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8484 8485 cqm = nlmsg_alloc(); 8486 if (cqm == NULL) 8487 return -1; 8488 8489 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold); 8490 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis); 8491 nla_put_nested(msg, NL80211_ATTR_CQM, cqm); 8492 8493 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 8494 return 0; 8495 msg = NULL; 8496 8497nla_put_failure: 8498 nlmsg_free(cqm); 8499 nlmsg_free(msg); 8500 return -1; 8501} 8502 8503 8504static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si) 8505{ 8506 struct i802_bss *bss = priv; 8507 struct wpa_driver_nl80211_data *drv = bss->drv; 8508 int res; 8509 8510 os_memset(si, 0, sizeof(*si)); 8511 res = nl80211_get_link_signal(drv, si); 8512 if (res != 0) 8513 return res; 8514 8515 return nl80211_get_link_noise(drv, si); 8516} 8517 8518 8519static int wpa_driver_nl80211_shared_freq(void *priv) 8520{ 8521 struct i802_bss *bss = priv; 8522 struct wpa_driver_nl80211_data *drv = bss->drv; 8523 struct wpa_driver_nl80211_data *driver; 8524 int freq = 0; 8525 8526 /* 8527 * If the same PHY is in connected state with some other interface, 8528 * then retrieve the assoc freq. 8529 */ 8530 wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s", 8531 drv->phyname); 8532 8533 dl_list_for_each(driver, &drv->global->interfaces, 8534 struct wpa_driver_nl80211_data, list) { 8535 if (drv == driver || 8536 os_strcmp(drv->phyname, driver->phyname) != 0 || 8537#ifdef ANDROID_P2P 8538 (!driver->associated && !is_ap_interface(driver->nlmode))) 8539#else 8540 !driver->associated) 8541#endif 8542 continue; 8543 8544 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s " 8545 MACSTR, 8546 driver->phyname, driver->first_bss.ifname, 8547 MAC2STR(driver->first_bss.addr)); 8548 if (is_ap_interface(driver->nlmode)) 8549 freq = driver->first_bss.freq; 8550 else 8551 freq = nl80211_get_assoc_freq(driver); 8552 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d", 8553 drv->phyname, freq); 8554 } 8555 8556 if (!freq) 8557 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for " 8558 "PHY (%s) in associated state", drv->phyname); 8559 8560 return freq; 8561} 8562 8563 8564static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len, 8565 int encrypt) 8566{ 8567 struct i802_bss *bss = priv; 8568 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0, 8569 0, 0, 0, 0); 8570} 8571 8572 8573static int nl80211_set_param(void *priv, const char *param) 8574{ 8575 wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param); 8576 if (param == NULL) 8577 return 0; 8578 8579#ifdef CONFIG_P2P 8580 if (os_strstr(param, "use_p2p_group_interface=1")) { 8581 struct i802_bss *bss = priv; 8582 struct wpa_driver_nl80211_data *drv = bss->drv; 8583 8584 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 8585 "interface"); 8586 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 8587 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 8588 } 8589#ifdef ANDROID_P2P 8590 if(os_strstr(param, "use_multi_chan_concurrent=1")) { 8591 struct i802_bss *bss = priv; 8592 struct wpa_driver_nl80211_data *drv = bss->drv; 8593 wpa_printf(MSG_DEBUG, "nl80211: Use Multi channel " 8594 "concurrency"); 8595 drv->capa.flags |= WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT; 8596 } 8597#endif 8598#endif /* CONFIG_P2P */ 8599 8600 return 0; 8601} 8602 8603 8604static void * nl80211_global_init(void) 8605{ 8606 struct nl80211_global *global; 8607 struct netlink_config *cfg; 8608 8609 global = os_zalloc(sizeof(*global)); 8610 if (global == NULL) 8611 return NULL; 8612 global->ioctl_sock = -1; 8613 dl_list_init(&global->interfaces); 8614 global->if_add_ifindex = -1; 8615 8616 cfg = os_zalloc(sizeof(*cfg)); 8617 if (cfg == NULL) 8618 goto err; 8619 8620 cfg->ctx = global; 8621 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink; 8622 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink; 8623 global->netlink = netlink_init(cfg); 8624 if (global->netlink == NULL) { 8625 os_free(cfg); 8626 goto err; 8627 } 8628 8629 if (wpa_driver_nl80211_init_nl_global(global) < 0) 8630 goto err; 8631 8632 global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0); 8633 if (global->ioctl_sock < 0) { 8634 perror("socket(PF_INET,SOCK_DGRAM)"); 8635 goto err; 8636 } 8637 8638 return global; 8639 8640err: 8641 nl80211_global_deinit(global); 8642 return NULL; 8643} 8644 8645 8646static void nl80211_global_deinit(void *priv) 8647{ 8648 struct nl80211_global *global = priv; 8649 if (global == NULL) 8650 return; 8651 if (!dl_list_empty(&global->interfaces)) { 8652 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at " 8653 "nl80211_global_deinit", 8654 dl_list_len(&global->interfaces)); 8655 } 8656 8657 if (global->netlink) 8658 netlink_deinit(global->netlink); 8659 8660 nl_destroy_handles(&global->nl); 8661 8662 if (global->nl_event) { 8663 eloop_unregister_read_sock( 8664 nl_socket_get_fd(global->nl_event)); 8665 nl_destroy_handles(&global->nl_event); 8666 } 8667 8668 nl_cb_put(global->nl_cb); 8669 8670 if (global->ioctl_sock >= 0) 8671 close(global->ioctl_sock); 8672 8673 os_free(global); 8674} 8675 8676 8677static const char * nl80211_get_radio_name(void *priv) 8678{ 8679 struct i802_bss *bss = priv; 8680 struct wpa_driver_nl80211_data *drv = bss->drv; 8681 return drv->phyname; 8682} 8683 8684 8685static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid, 8686 const u8 *pmkid) 8687{ 8688 struct nl_msg *msg; 8689 8690 msg = nlmsg_alloc(); 8691 if (!msg) 8692 return -ENOMEM; 8693 8694 nl80211_cmd(bss->drv, msg, 0, cmd); 8695 8696 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 8697 if (pmkid) 8698 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid); 8699 if (bssid) 8700 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); 8701 8702 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 8703 nla_put_failure: 8704 nlmsg_free(msg); 8705 return -ENOBUFS; 8706} 8707 8708 8709static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 8710{ 8711 struct i802_bss *bss = priv; 8712 wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid)); 8713 return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid); 8714} 8715 8716 8717static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 8718{ 8719 struct i802_bss *bss = priv; 8720 wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR, 8721 MAC2STR(bssid)); 8722 return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid); 8723} 8724 8725 8726static int nl80211_flush_pmkid(void *priv) 8727{ 8728 struct i802_bss *bss = priv; 8729 wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs"); 8730 return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL); 8731} 8732 8733 8734static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck, 8735 const u8 *replay_ctr) 8736{ 8737 struct i802_bss *bss = priv; 8738 struct wpa_driver_nl80211_data *drv = bss->drv; 8739 struct nlattr *replay_nested; 8740 struct nl_msg *msg; 8741 8742 msg = nlmsg_alloc(); 8743 if (!msg) 8744 return; 8745 8746 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 8747 8748 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8749 8750 replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 8751 if (!replay_nested) 8752 goto nla_put_failure; 8753 8754 NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek); 8755 NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck); 8756 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN, 8757 replay_ctr); 8758 8759 nla_nest_end(msg, replay_nested); 8760 8761 send_and_recv_msgs(drv, msg, NULL, NULL); 8762 return; 8763 nla_put_failure: 8764 nlmsg_free(msg); 8765} 8766 8767 8768static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr, 8769 const u8 *addr, int qos) 8770{ 8771 /* send data frame to poll STA and check whether 8772 * this frame is ACKed */ 8773 struct { 8774 struct ieee80211_hdr hdr; 8775 u16 qos_ctl; 8776 } STRUCT_PACKED nulldata; 8777 size_t size; 8778 8779 /* Send data frame to poll STA and check whether this frame is ACKed */ 8780 8781 os_memset(&nulldata, 0, sizeof(nulldata)); 8782 8783 if (qos) { 8784 nulldata.hdr.frame_control = 8785 IEEE80211_FC(WLAN_FC_TYPE_DATA, 8786 WLAN_FC_STYPE_QOS_NULL); 8787 size = sizeof(nulldata); 8788 } else { 8789 nulldata.hdr.frame_control = 8790 IEEE80211_FC(WLAN_FC_TYPE_DATA, 8791 WLAN_FC_STYPE_NULLFUNC); 8792 size = sizeof(struct ieee80211_hdr); 8793 } 8794 8795 nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS); 8796 os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN); 8797 os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 8798 os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 8799 8800 if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0) < 0) 8801 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to " 8802 "send poll frame"); 8803} 8804 8805static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr, 8806 int qos) 8807{ 8808 struct i802_bss *bss = priv; 8809 struct wpa_driver_nl80211_data *drv = bss->drv; 8810 struct nl_msg *msg; 8811 8812 if (!drv->poll_command_supported) { 8813 nl80211_send_null_frame(bss, own_addr, addr, qos); 8814 return; 8815 } 8816 8817 msg = nlmsg_alloc(); 8818 if (!msg) 8819 return; 8820 8821 nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT); 8822 8823 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8824 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 8825 8826 send_and_recv_msgs(drv, msg, NULL, NULL); 8827 return; 8828 nla_put_failure: 8829 nlmsg_free(msg); 8830} 8831 8832 8833static int nl80211_set_power_save(struct i802_bss *bss, int enabled) 8834{ 8835 struct nl_msg *msg; 8836 8837 msg = nlmsg_alloc(); 8838 if (!msg) 8839 return -ENOMEM; 8840 8841 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE); 8842 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8843 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, 8844 enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED); 8845 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 8846nla_put_failure: 8847 nlmsg_free(msg); 8848 return -ENOBUFS; 8849} 8850 8851 8852static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps, 8853 int ctwindow) 8854{ 8855 struct i802_bss *bss = priv; 8856 8857 wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d " 8858 "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow); 8859 8860 if (opp_ps != -1 || ctwindow != -1) 8861#ifdef ANDROID_P2P 8862 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow); 8863#else 8864 return -1; /* Not yet supported */ 8865#endif 8866 8867 if (legacy_ps == -1) 8868 return 0; 8869 if (legacy_ps != 0 && legacy_ps != 1) 8870 return -1; /* Not yet supported */ 8871 8872 return nl80211_set_power_save(bss, legacy_ps); 8873} 8874 8875 8876#ifdef CONFIG_TDLS 8877 8878static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code, 8879 u8 dialog_token, u16 status_code, 8880 const u8 *buf, size_t len) 8881{ 8882 struct i802_bss *bss = priv; 8883 struct wpa_driver_nl80211_data *drv = bss->drv; 8884 struct nl_msg *msg; 8885 8886 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 8887 return -EOPNOTSUPP; 8888 8889 if (!dst) 8890 return -EINVAL; 8891 8892 msg = nlmsg_alloc(); 8893 if (!msg) 8894 return -ENOMEM; 8895 8896 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT); 8897 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8898 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst); 8899 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code); 8900 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token); 8901 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code); 8902 NLA_PUT(msg, NL80211_ATTR_IE, len, buf); 8903 8904 return send_and_recv_msgs(drv, msg, NULL, NULL); 8905 8906nla_put_failure: 8907 nlmsg_free(msg); 8908 return -ENOBUFS; 8909} 8910 8911 8912static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer) 8913{ 8914 struct i802_bss *bss = priv; 8915 struct wpa_driver_nl80211_data *drv = bss->drv; 8916 struct nl_msg *msg; 8917 enum nl80211_tdls_operation nl80211_oper; 8918 8919 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 8920 return -EOPNOTSUPP; 8921 8922 switch (oper) { 8923 case TDLS_DISCOVERY_REQ: 8924 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ; 8925 break; 8926 case TDLS_SETUP: 8927 nl80211_oper = NL80211_TDLS_SETUP; 8928 break; 8929 case TDLS_TEARDOWN: 8930 nl80211_oper = NL80211_TDLS_TEARDOWN; 8931 break; 8932 case TDLS_ENABLE_LINK: 8933 nl80211_oper = NL80211_TDLS_ENABLE_LINK; 8934 break; 8935 case TDLS_DISABLE_LINK: 8936 nl80211_oper = NL80211_TDLS_DISABLE_LINK; 8937 break; 8938 case TDLS_ENABLE: 8939 return 0; 8940 case TDLS_DISABLE: 8941 return 0; 8942 default: 8943 return -EINVAL; 8944 } 8945 8946 msg = nlmsg_alloc(); 8947 if (!msg) 8948 return -ENOMEM; 8949 8950 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER); 8951 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper); 8952 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8953 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer); 8954 8955 return send_and_recv_msgs(drv, msg, NULL, NULL); 8956 8957nla_put_failure: 8958 nlmsg_free(msg); 8959 return -ENOBUFS; 8960} 8961 8962#endif /* CONFIG TDLS */ 8963 8964 8965#ifdef ANDROID 8966 8967typedef struct android_wifi_priv_cmd { 8968 char *buf; 8969 int used_len; 8970 int total_len; 8971} android_wifi_priv_cmd; 8972 8973static int drv_errors = 0; 8974 8975static void wpa_driver_send_hang_msg(struct wpa_driver_nl80211_data *drv) 8976{ 8977 drv_errors++; 8978 if (drv_errors > DRV_NUMBER_SEQUENTIAL_ERRORS) { 8979 drv_errors = 0; 8980 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED"); 8981 } 8982} 8983 8984 8985static int android_priv_cmd(struct i802_bss *bss, const char *cmd) 8986{ 8987 struct wpa_driver_nl80211_data *drv = bss->drv; 8988 struct ifreq ifr; 8989 android_wifi_priv_cmd priv_cmd; 8990 char buf[MAX_DRV_CMD_SIZE]; 8991 int ret; 8992 8993 os_memset(&ifr, 0, sizeof(ifr)); 8994 os_memset(&priv_cmd, 0, sizeof(priv_cmd)); 8995 os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 8996 8997 os_memset(buf, 0, sizeof(buf)); 8998 os_strlcpy(buf, cmd, sizeof(buf)); 8999 9000 priv_cmd.buf = buf; 9001 priv_cmd.used_len = sizeof(buf); 9002 priv_cmd.total_len = sizeof(buf); 9003 ifr.ifr_data = &priv_cmd; 9004 9005 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 9006 if (ret < 0) { 9007 wpa_printf(MSG_ERROR, "%s: failed to issue private commands", 9008 __func__); 9009 wpa_driver_send_hang_msg(drv); 9010 return ret; 9011 } 9012 9013 drv_errors = 0; 9014 return 0; 9015} 9016 9017 9018static int android_pno_start(struct i802_bss *bss, 9019 struct wpa_driver_scan_params *params) 9020{ 9021 struct wpa_driver_nl80211_data *drv = bss->drv; 9022 struct ifreq ifr; 9023 android_wifi_priv_cmd priv_cmd; 9024 int ret = 0, i = 0, bp; 9025 char buf[WEXT_PNO_MAX_COMMAND_SIZE]; 9026 9027 bp = WEXT_PNOSETUP_HEADER_SIZE; 9028 os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp); 9029 buf[bp++] = WEXT_PNO_TLV_PREFIX; 9030 buf[bp++] = WEXT_PNO_TLV_VERSION; 9031 buf[bp++] = WEXT_PNO_TLV_SUBVERSION; 9032 buf[bp++] = WEXT_PNO_TLV_RESERVED; 9033 9034 while (i < WEXT_PNO_AMOUNT && (size_t) i < params->num_ssids) { 9035 /* Check that there is enough space needed for 1 more SSID, the 9036 * other sections and null termination */ 9037 if ((bp + WEXT_PNO_SSID_HEADER_SIZE + MAX_SSID_LEN + 9038 WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int) sizeof(buf)) 9039 break; 9040 wpa_hexdump_ascii(MSG_DEBUG, "For PNO Scan", 9041 params->ssids[i].ssid, 9042 params->ssids[i].ssid_len); 9043 buf[bp++] = WEXT_PNO_SSID_SECTION; 9044 buf[bp++] = params->ssids[i].ssid_len; 9045 os_memcpy(&buf[bp], params->ssids[i].ssid, 9046 params->ssids[i].ssid_len); 9047 bp += params->ssids[i].ssid_len; 9048 i++; 9049 } 9050 9051 buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION; 9052 os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x", 9053 WEXT_PNO_SCAN_INTERVAL); 9054 bp += WEXT_PNO_SCAN_INTERVAL_LENGTH; 9055 9056 buf[bp++] = WEXT_PNO_REPEAT_SECTION; 9057 os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x", 9058 WEXT_PNO_REPEAT); 9059 bp += WEXT_PNO_REPEAT_LENGTH; 9060 9061 buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION; 9062 os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x", 9063 WEXT_PNO_MAX_REPEAT); 9064 bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1; 9065 9066 memset(&ifr, 0, sizeof(ifr)); 9067 memset(&priv_cmd, 0, sizeof(priv_cmd)); 9068 os_strncpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 9069 9070 priv_cmd.buf = buf; 9071 priv_cmd.used_len = bp; 9072 priv_cmd.total_len = bp; 9073 ifr.ifr_data = &priv_cmd; 9074 9075 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 9076 9077 if (ret < 0) { 9078 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d", 9079 ret); 9080 wpa_driver_send_hang_msg(drv); 9081 return ret; 9082 } 9083 9084 drv_errors = 0; 9085 9086 return android_priv_cmd(bss, "PNOFORCE 1"); 9087} 9088 9089 9090static int android_pno_stop(struct i802_bss *bss) 9091{ 9092 return android_priv_cmd(bss, "PNOFORCE 0"); 9093} 9094 9095#endif /* ANDROID */ 9096 9097 9098const struct wpa_driver_ops wpa_driver_nl80211_ops = { 9099 .name = "nl80211", 9100 .desc = "Linux nl80211/cfg80211", 9101 .get_bssid = wpa_driver_nl80211_get_bssid, 9102 .get_ssid = wpa_driver_nl80211_get_ssid, 9103 .set_key = wpa_driver_nl80211_set_key, 9104 .scan2 = wpa_driver_nl80211_scan, 9105 .sched_scan = wpa_driver_nl80211_sched_scan, 9106 .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan, 9107 .get_scan_results2 = wpa_driver_nl80211_get_scan_results, 9108 .deauthenticate = wpa_driver_nl80211_deauthenticate, 9109 .disassociate = wpa_driver_nl80211_disassociate, 9110 .authenticate = wpa_driver_nl80211_authenticate, 9111 .associate = wpa_driver_nl80211_associate, 9112 .global_init = nl80211_global_init, 9113 .global_deinit = nl80211_global_deinit, 9114 .init2 = wpa_driver_nl80211_init, 9115 .deinit = wpa_driver_nl80211_deinit, 9116 .get_capa = wpa_driver_nl80211_get_capa, 9117 .set_operstate = wpa_driver_nl80211_set_operstate, 9118 .set_supp_port = wpa_driver_nl80211_set_supp_port, 9119 .set_country = wpa_driver_nl80211_set_country, 9120 .set_ap = wpa_driver_nl80211_set_ap, 9121 .if_add = wpa_driver_nl80211_if_add, 9122 .if_remove = wpa_driver_nl80211_if_remove, 9123 .send_mlme = wpa_driver_nl80211_send_mlme, 9124 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data, 9125 .sta_add = wpa_driver_nl80211_sta_add, 9126 .sta_remove = wpa_driver_nl80211_sta_remove, 9127 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol, 9128 .sta_set_flags = wpa_driver_nl80211_sta_set_flags, 9129#ifdef HOSTAPD 9130 .hapd_init = i802_init, 9131 .hapd_deinit = i802_deinit, 9132 .set_wds_sta = i802_set_wds_sta, 9133#endif /* HOSTAPD */ 9134#if defined(HOSTAPD) || defined(CONFIG_AP) 9135 .get_seqnum = i802_get_seqnum, 9136 .flush = i802_flush, 9137 .read_sta_data = i802_read_sta_data, 9138 .get_inact_sec = i802_get_inact_sec, 9139 .sta_clear_stats = i802_sta_clear_stats, 9140 .set_rts = i802_set_rts, 9141 .set_frag = i802_set_frag, 9142 .set_tx_queue_params = i802_set_tx_queue_params, 9143 .set_sta_vlan = i802_set_sta_vlan, 9144 .sta_deauth = i802_sta_deauth, 9145 .sta_disassoc = i802_sta_disassoc, 9146#endif /* HOSTAPD || CONFIG_AP */ 9147 .set_freq = i802_set_freq, 9148 .send_action = wpa_driver_nl80211_send_action, 9149 .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait, 9150 .remain_on_channel = wpa_driver_nl80211_remain_on_channel, 9151 .cancel_remain_on_channel = 9152 wpa_driver_nl80211_cancel_remain_on_channel, 9153 .probe_req_report = wpa_driver_nl80211_probe_req_report, 9154 .deinit_ap = wpa_driver_nl80211_deinit_ap, 9155 .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli, 9156 .resume = wpa_driver_nl80211_resume, 9157 .send_ft_action = nl80211_send_ft_action, 9158 .signal_monitor = nl80211_signal_monitor, 9159 .signal_poll = nl80211_signal_poll, 9160 .send_frame = nl80211_send_frame, 9161 .shared_freq = wpa_driver_nl80211_shared_freq, 9162 .set_param = nl80211_set_param, 9163 .get_radio_name = nl80211_get_radio_name, 9164 .add_pmkid = nl80211_add_pmkid, 9165 .remove_pmkid = nl80211_remove_pmkid, 9166 .flush_pmkid = nl80211_flush_pmkid, 9167 .set_rekey_info = nl80211_set_rekey_info, 9168 .poll_client = nl80211_poll_client, 9169 .set_p2p_powersave = nl80211_set_p2p_powersave, 9170#ifdef CONFIG_TDLS 9171 .send_tdls_mgmt = nl80211_send_tdls_mgmt, 9172 .tdls_oper = nl80211_tdls_oper, 9173#endif /* CONFIG_TDLS */ 9174#ifdef ANDROID_P2P 9175 .set_noa = wpa_driver_set_p2p_noa, 9176 .get_noa = wpa_driver_get_p2p_noa, 9177 .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie, 9178#endif 9179#ifdef ANDROID 9180 .driver_cmd = wpa_driver_nl80211_driver_cmd, 9181#endif 9182}; 9183